/* ************************************************************************** */ /* * For conditions of distribution and use, * */ /* * see copyright notice in libmng.h * */ /* ************************************************************************** */ /* * * */ /* * project : libmng * */ /* * file : libmng_pixels.c copyright (c) 2000 G.Juyn * */ /* * version : 1.0.4 * */ /* * * */ /* * purpose : Pixel-row management routines (implementation) * */ /* * * */ /* * author : G.Juyn * */ /* * web : http://www.3-t.com * */ /* * email : mailto:info@3-t.com * */ /* * * */ /* * comment : implementation of the pixel-row management routines * */ /* * * */ /* * the dual alpha-composing for RGBA/BGRA/etc output-canvas' * */ /* * is based on the Note on Compositing chapter of the * */ /* * DOH-3 draft, noted to me by Adam M. Costello * */ /* * * */ /* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */ /* * - changed strict-ANSI stuff * */ /* * 0.5.1 - 05/11/2000 - G.Juyn * */ /* * - added callback error-reporting support * */ /* * 0.5.1 - 05/12/2000 - G.Juyn * */ /* * - changed trace to macro for callback error-reporting * */ /* * * */ /* * 0.5.2 - 05/22/2000 - G.Juyn * */ /* * - added JNG support * */ /* * 0.5.2 - 05/30/2000 - G.Juyn * */ /* * - fixed minor bugs 16-bit pixel-handling * */ /* * - added delta-image row-processing routines * */ /* * 0.5.2 - 06/02/2000 - G.Juyn * */ /* * - fixed endian support (hopefully) * */ /* * 0.5.2 - 06/03/2000 - G.Juyn * */ /* * - fixed makeup for Linux gcc compile * */ /* * 0.5.2 - 06/05/2000 - G.Juyn * */ /* * - implemented app bkgd restore routines * */ /* * - implemented RGBA8, ARGB8, BGRA8 & ABGR8 display routines * */ /* * - added support for RGB8_A8 canvasstyle * */ /* * 0.5.2 - 06/09/2000 - G.Juyn * */ /* * - fixed alpha-handling for alpha canvasstyles * */ /* * * */ /* * 0.5.3 - 06/16/2000 - G.Juyn * */ /* * - changed progressive-display processing * */ /* * 0.5.3 - 06/17/2000 - G.Juyn * */ /* * - changed to support delta-images * */ /* * - optimized some store_xxx routines * */ /* * 0.5.3 - 06/20/2000 - G.Juyn * */ /* * - fixed nasty bug with embedded PNG after delta-image * */ /* * 0.5.3 - 06/24/2000 - G.Juyn * */ /* * - fixed problem with 16-bit GA format * */ /* * 0.5.3 - 06/25/2000 - G.Juyn * */ /* * - fixed problem with cheap transparency for 4-bit gray * */ /* * - fixed display_xxxx routines for interlaced images * */ /* * 0.5.3 - 06/28/2000 - G.Juyn * */ /* * - fixed compiler-warning for non-initialized iB variable * */ /* * * */ /* * 0.9.1 - 07/05/2000 - G.Juyn * */ /* * - fixed mandatory BACK color to be opaque * */ /* * * */ /* * 0.9.2 - 07/31/2000 - G.Juyn * */ /* * - B110547 - fixed bug in interlace code * */ /* * 0.9.2 - 08/05/2000 - G.Juyn * */ /* * - changed file-prefixes * */ /* * * */ /* * 0.9.3 - 08/20/2000 - G.Juyn * */ /* * - fixed app-supplied background restore * */ /* * 0.9.3 - 08/26/2000 - G.Juyn * */ /* * - added MAGN chunk * */ /* * 0.9.3 - 09/07/2000 - G.Juyn * */ /* * - added support for new filter_types * */ /* * 0.9.3 - 09/30/2000 - G.Juyn * */ /* * - fixed MAGN rounding errors (thanks Matthias!) * */ /* * 0.9.3 - 10/10/2000 - G.Juyn * */ /* * - fixed alpha-blending for RGBA canvasstyle * */ /* * 0.9.3 - 10/11/2000 - G.Juyn * */ /* * - fixed alpha-blending for other alpha-canvasstyles * */ /* * 0.9.3 - 10/16/2000 - G.Juyn * */ /* * - added optional support for bKGD for PNG images * */ /* * - added support for JDAA * */ /* * 0.9.3 - 10/17/2000 - G.Juyn * */ /* * - fixed support for bKGD * */ /* * 0.9.3 - 10/19/2000 - G.Juyn * */ /* * - implemented delayed delta-processing * */ /* * 0.9.3 - 10/28/2000 - G.Juyn * */ /* * - fixed tRNS processing for gray-image < 8-bits * */ /* * * */ /* * 0.9.4 - 12/16/2000 - G.Juyn * */ /* * - fixed mixup of data- & function-pointers (thanks Dimitri)* */ /* * 0.9.4 - 1/18/2001 - G.Juyn * */ /* * - removed "old" MAGN methods 3 & 4 * */ /* * - added "new" MAGN methods 3, 4 & 5 * */ /* * - removed test filter-methods 1 & 65 * */ /* * * */ /* * 1.0.1 - 04/21/2001 - G.Juyn (code by G.Kelly) * */ /* * - added BGRA8 canvas with premultiplied alpha * */ /* * 1.0.1 - 04/25/2001 - G.Juyn * */ /* * - moved mng_clear_cms to libmng_cms * */ /* * * */ /* * 1.0.2 - 06/25/2001 - G.Juyn * */ /* * - added option to turn off progressive refresh * */ /* * * */ /* * 1.0.4 - 11/04/2001 - G.Juyn * */ /* * - fixed possible compile-problem in cleanup_rowproc * */ /* * 1.0.4 - 06/22/2002 - G.Juyn * */ /* * - B558212 - off by one error * */ /* * - MNG subimage alpha composite wrong for rgba8 images * */ /* * * */ /* ************************************************************************** */ #include "libmng.h" #include "libmng_data.h" #include "libmng_error.h" #include "libmng_trace.h" #include "libmng_objects.h" #include "libmng_memory.h" #include "libmng_cms.h" #include "libmng_filter.h" #include "libmng_pixels.h" /* ************************************************************************** */ #ifdef MNG_INCLUDE_DISPLAY_PROCS /* TODO: magnification & canvas-positioning/-clipping */ /* TODO: major optimization of pixel-loops by using assembler (?) */ /* ************************************************************************** */ /* * * */ /* * Interlace tables * */ /* * * */ /* ************************************************************************** */ mng_uint32 const interlace_row [7] = { 0, 0, 4, 0, 2, 0, 1 }; mng_uint32 const interlace_rowskip [7] = { 8, 8, 8, 4, 4, 2, 2 }; mng_uint32 const interlace_col [7] = { 0, 4, 0, 2, 0, 1, 0 }; mng_uint32 const interlace_colskip [7] = { 8, 8, 4, 4, 2, 2, 1 }; mng_uint32 const interlace_roundoff [7] = { 7, 7, 3, 3, 1, 1, 0 }; mng_uint32 const interlace_divider [7] = { 3, 3, 2, 2, 1, 1, 0 }; /* ************************************************************************** */ /* * * */ /* * Alpha composing macros * */ /* * the code below is slightly modified from the libpng package * */ /* * the original was last optimized by Greg Roelofs & Mark Adler * */ /* * * */ /* ************************************************************************** */ #define MNG_COMPOSE8(RET,FG,ALPHA,BG) { \ mng_uint16 iH = (mng_uint16)((mng_uint16)(FG) * (mng_uint16)(ALPHA) \ + (mng_uint16)(BG)*(mng_uint16)(255 - \ (mng_uint16)(ALPHA)) + (mng_uint16)128); \ (RET) = (mng_uint8)((iH + (iH >> 8)) >> 8); } #define MNG_COMPOSE16(RET,FG,ALPHA,BG) { \ mng_uint32 iH = (mng_uint32)((mng_uint32)(FG) * (mng_uint32)(ALPHA) \ + (mng_uint32)(BG)*(mng_uint32)(65535L - \ (mng_uint32)(ALPHA)) + (mng_uint32)32768L); \ (RET) = (mng_uint16)((iH + (iH >> 16)) >> 16); } /* ************************************************************************** */ /* * * */ /* * Alpha blending macros * */ /* * this code is based on Adam Costello's "Note on Compositing" from the * */ /* * mng-list which gives the following formula: * */ /* * * */ /* * top pixel = (Rt, Gt, Bt, At) * */ /* * bottom pixel = (Rb, Gb, Bb, Ab) * */ /* * composite pixel = (Rc, Gc, Bc, Ac) * */ /* * * */ /* * all values in the range 0..1 * */ /* * * */ /* * Ac = 1 - (1 - At)(1 - Ab) * */ /* * s = At / Ac * */ /* * t = (1 - At) Ab / Ac * */ /* * Rc = s Rt + t Rb * */ /* * Gc = s Gt + t Gb * */ /* * Bc = s Bt + t Bb * */ /* * * */ /* * (I just hope I coded it correctly in integer arithmetic...) * */ /* * * */ /* ************************************************************************** */ #define MNG_BLEND8(RT, GT, BT, AT, RB, GB, BB, AB, RC, GC, BC, AC) { \ mng_uint32 S, T; \ (AC) = (mng_uint8)((mng_uint32)255 - \ ((((mng_uint32)255 - (mng_uint32)(AT)) * \ ((mng_uint32)255 - (mng_uint32)(AB)) ) >> 8)); \ S = (mng_uint32)(((mng_uint32)(AT) << 8) / \ (mng_uint32)(AC)); \ T = (mng_uint32)(((mng_uint32)255 - (mng_uint32)(AT)) * \ (mng_uint32)(AB) / (mng_uint32)(AC)); \ (RC) = (mng_uint8)((S * (mng_uint32)(RT) + \ T * (mng_uint32)(RB) + (mng_uint32)127) >> 8); \ (GC) = (mng_uint8)((S * (mng_uint32)(GT) + \ T * (mng_uint32)(GB) + (mng_uint32)127) >> 8); \ (BC) = (mng_uint8)((S * (mng_uint32)(BT) + \ T * (mng_uint32)(BB) + (mng_uint32)127) >> 8); } #define MNG_BLEND16(RT, GT, BT, AT, RB, GB, BB, AB, RC, GC, BC, AC) { \ mng_uint32 S, T; \ (AC) = (mng_uint16)((mng_uint32)65525 - \ ((((mng_uint32)65535 - (mng_uint32)(AT)) * \ ((mng_uint32)65535 - (mng_uint32)(AB)) ) >> 16)); \ S = (mng_uint32)(((mng_uint32)(AT) << 16) / \ (mng_uint32)(AC)); \ T = (mng_uint32)(((mng_uint32)65535 - (mng_uint32)(AT)) * \ (mng_uint32)(AB) / (mng_uint32)(AC)); \ (RC) = (mng_uint16)((S * (mng_uint32)(RT) + \ T * (mng_uint32)(RB) + (mng_uint32)32767) >> 16); \ (GC) = (mng_uint16)((S * (mng_uint32)(GT) + \ T * (mng_uint32)(GB) + (mng_uint32)32767) >> 16); \ (BC) = (mng_uint16)((S * (mng_uint32)(BT) + \ T * (mng_uint32)(BB) + (mng_uint32)32767) >> 16); } /* ************************************************************************** */ /* note a good optimizing compiler will optimize this */ #define DIV255B8(x) (mng_uint8)(((x) + 127) / 255) #define DIV255B16(x) (mng_uint16)(((x) + 32767) / 65535) /* ************************************************************************** */ /* * * */ /* * Progressive display check - checks to see if progressive display is * */ /* * in order & indicates so * */ /* * * */ /* * The routine is called after a call to one of the display_xxx routines * */ /* * if appropriate * */ /* * * */ /* * The refresh is warrented in the read_chunk routine (mng_read.c) * */ /* * and only during read&display processing, since there's not much point * */ /* * doing it from memory! * */ /* * * */ /* ************************************************************************** */ mng_retcode display_progressive_check (mng_datap pData) { if ((pData->bDoProgressive) && /* need progressive display? */ ((pData->eImagetype != mng_it_mng) || (pData->iDataheight > 300)) && (pData->iDestb - pData->iDestt > 50) && (!pData->pCurraniobj)) { mng_int32 iC = pData->iRow + pData->iDestt - pData->iSourcet; if (iC % 20 == 0) /* every 20th line */ pData->bNeedrefresh = MNG_TRUE; } return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Display routines - convert rowdata (which is already color-corrected) * */ /* * to the output canvas, respecting the opacity information * */ /* * * */ /* ************************************************************************** */ void check_update_region (mng_datap pData) { /* determine actual canvas row */ mng_int32 iRow = pData->iRow + pData->iDestt - pData->iSourcet; /* check for change in update-region */ if ((pData->iDestl < (mng_int32)pData->iUpdateleft) || (pData->iUpdateright == 0)) pData->iUpdateleft = pData->iDestl; if (pData->iDestr > (mng_int32)pData->iUpdateright) pData->iUpdateright = pData->iDestr; if ((iRow < (mng_int32)pData->iUpdatetop) || (pData->iUpdatebottom == 0)) pData->iUpdatetop = iRow; if (iRow+1 > (mng_int32)pData->iUpdatebottom) pData->iUpdatebottom = iRow+1; return; } /* ************************************************************************** */ mng_retcode display_rgb8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iA16; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint8 iA8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+4); pScanline += (pData->iColinc * 3); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *(pDataline+2); pScanline += (pData->iColinc * 3); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iA16 = mng_get_uint16 (pDataline+6); if (iA16) /* any opacity at all ? */ { if (iA16 == 0xFFFF) /* fully opaque ? */ { /* scale down by dropping the LSB */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+4); } else { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*pScanline ); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*(pScanline+2)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16) /* and return the composed values */ *pScanline = (mng_uint8)(iFGr16 >> 8); *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); *(pScanline+2) = (mng_uint8)(iFGb16 >> 8); } } pScanline += (pData->iColinc * 3); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iA8 = *(pDataline+3); /* get alpha value */ if (iA8) /* any opacity at all ? */ { if (iA8 == 0xFF) /* fully opaque ? */ { /* then simply copy the values */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *(pDataline+2); } else { /* do alpha composing */ MNG_COMPOSE8 (*pScanline, *pDataline, iA8, *pScanline ) MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iA8, *(pScanline+2)) } } pScanline += (pData->iColinc * 3); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_rgba8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iFGa16, iBGa16, iCa16; mng_uint8 iFGa8, iBGa8, iCa8; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint16 iCr16, iCg16, iCb16; mng_uint8 iCr8, iCg8, iCb8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+4); *(pScanline+3) = *(pDataline+6); pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *(pDataline+2); *(pScanline+3) = *(pDataline+3); pScanline += (pData->iColinc << 2); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha values */ iFGa16 = mng_get_uint16 (pDataline+6); iBGa16 = (mng_uint16)(*(pScanline+3)); iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; if (iFGa16) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) { /* plain copy it */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+4); *(pScanline+3) = *(pDataline+6); } else { if (iBGa16 == 0xFFFF) /* background fully opaque ? */ { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*pScanline ); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*(pScanline+2)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16) /* and return the composed values */ *pScanline = (mng_uint8)(iFGr16 >> 8); *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); *(pScanline+2) = (mng_uint8)(iFGb16 >> 8); /* alpha remains fully opaque !!! */ } else { /* scale background up */ iBGr16 = (mng_uint16)(*pScanline ); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*(pScanline+2)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* let's blend */ MNG_BLEND16 (mng_get_uint16 (pDataline ), mng_get_uint16 (pDataline+2), mng_get_uint16 (pDataline+4), iFGa16, iBGr16, iBGg16, iBGb16, iBGa16, iCr16, iCg16, iCb16, iCa16) /* and return the composed values */ *pScanline = (mng_uint8)(iCr16 >> 8); *(pScanline+1) = (mng_uint8)(iCg16 >> 8); *(pScanline+2) = (mng_uint8)(iCb16 >> 8); *(pScanline+3) = (mng_uint8)(iCa16 >> 8); } } } pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iFGa8 = *(pDataline+3); /* get alpha values */ iBGa8 = *(pScanline+3); if (iFGa8) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa8 == 0xFF) || (iBGa8 == 0)) { /* then simply copy the values */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *(pDataline+2); *(pScanline+3) = *(pDataline+3); } else { if (iBGa8 == 0xFF) /* background fully opaque ? */ { /* do alpha composing */ MNG_COMPOSE8 (*pScanline, *pDataline, iFGa8, *pScanline ) MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iFGa8, *(pScanline+2)) /* alpha remains fully opaque !!! */ } else { /* now blend */ MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, iCr8, iCg8, iCb8, iCa8) /* and return the composed values */ *pScanline = iCr8; *(pScanline+1) = iCg8; *(pScanline+2) = iCb8; *(pScanline+3) = iCa8; } } } pScanline += (pData->iColinc << 2); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_RGBA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_argb8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iFGa16, iBGa16, iCa16; mng_uint8 iFGa8, iBGa8, iCa8; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint16 iCr16, iCg16, iCb16; mng_uint8 iCr8, iCg8, iCb8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *(pDataline+6); *(pScanline+1) = *pDataline; *(pScanline+2) = *(pDataline+2); *(pScanline+3) = *(pDataline+4); pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *(pDataline+3); *(pScanline+1) = *pDataline; *(pScanline+2) = *(pDataline+1); *(pScanline+3) = *(pDataline+2); pScanline += (pData->iColinc << 2); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha values */ iFGa16 = mng_get_uint16 (pDataline+6); iBGa16 = (mng_uint16)(*pScanline); iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; if (iFGa16) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) { /* plain copy it */ *pScanline = *(pDataline+6); *(pScanline+1) = *pDataline; *(pScanline+2) = *(pDataline+2); *(pScanline+3) = *(pDataline+4); } else { if (iBGa16 == 0xFFFF) /* background fully opaque ? */ { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+1)); iBGg16 = (mng_uint16)(*(pScanline+2)); iBGb16 = (mng_uint16)(*(pScanline+3)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16) /* and return the composed values */ /* alpha remains fully opaque !!! */ *(pScanline+1) = (mng_uint8)(iFGr16 >> 8); *(pScanline+2) = (mng_uint8)(iFGg16 >> 8); *(pScanline+3) = (mng_uint8)(iFGb16 >> 8); } else { /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+1)); iBGg16 = (mng_uint16)(*(pScanline+2)); iBGb16 = (mng_uint16)(*(pScanline+3)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* let's blend */ MNG_BLEND16 (mng_get_uint16 (pDataline ), mng_get_uint16 (pDataline+2), mng_get_uint16 (pDataline+4), iFGa16, iBGr16, iBGg16, iBGb16, iBGa16, iCr16, iCg16, iCb16, iCa16) /* and return the composed values */ *pScanline = (mng_uint8)(iCa16 >> 8); *(pScanline+1) = (mng_uint8)(iCr16 >> 8); *(pScanline+2) = (mng_uint8)(iCg16 >> 8); *(pScanline+3) = (mng_uint8)(iCb16 >> 8); } } } pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iFGa8 = *(pDataline+3); /* get alpha values */ iBGa8 = *pScanline; if (iFGa8) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa8 == 0xFF) || (iBGa8 == 0)) { /* then simply copy the values */ *pScanline = *(pDataline+3); *(pScanline+1) = *pDataline; *(pScanline+2) = *(pDataline+1); *(pScanline+3) = *(pDataline+2); } else { if (iBGa8 == 0xFF) /* background fully opaque ? */ { /* do simple alpha composing */ /* alpha itself remains fully opaque !!! */ MNG_COMPOSE8 (*(pScanline+1), *pDataline, iFGa8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *(pDataline+1), iFGa8, *(pScanline+2)) MNG_COMPOSE8 (*(pScanline+3), *(pDataline+2), iFGa8, *(pScanline+3)) } else { /* now blend */ MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, *(pScanline+1), *(pScanline+2), *(pScanline+3), iBGa8, iCr8, iCg8, iCb8, iCa8) /* and return the composed values */ *pScanline = iCa8; *(pScanline+1) = iCr8; *(pScanline+2) = iCg8; *(pScanline+3) = iCb8; } } } pScanline += (pData->iColinc << 2); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_ARGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_rgb8_a8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pAlphaline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iFGa16, iBGa16, iCa16; mng_uint8 iFGa8, iBGa8, iCa8; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint16 iCr16, iCg16, iCb16; mng_uint8 iCr8, iCg8, iCb8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination rows */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); pAlphaline = (mng_uint8p)pData->fGetalphaline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination rows starting-point */ pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); pAlphaline = pAlphaline + pData->iCol + pData->iDestl; pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+4); *pAlphaline = *(pDataline+6); pScanline += (pData->iColinc * 3); pAlphaline += pData->iColinc; pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *(pDataline+2); *pAlphaline = *(pDataline+3); pScanline += (pData->iColinc * 3); pAlphaline += pData->iColinc; pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha values */ iFGa16 = mng_get_uint16 (pDataline+6); iBGa16 = (mng_uint16)(*pAlphaline); iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; if (iFGa16) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) { /* plain copy it */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+4); *pAlphaline = *(pDataline+6); } else { if (iBGa16 == 0xFFFF) /* background fully opaque ? */ { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*pScanline ); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*(pScanline+2)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16) /* and return the composed values */ *pScanline = (mng_uint8)(iFGr16 >> 8); *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); *(pScanline+2) = (mng_uint8)(iFGb16 >> 8); /* alpha remains fully opaque !!! */ } else { /* scale background up */ iBGr16 = (mng_uint16)(*pScanline ); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*(pScanline+2)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* let's blend */ MNG_BLEND16 (mng_get_uint16 (pDataline ), mng_get_uint16 (pDataline+2), mng_get_uint16 (pDataline+4), iFGa16, iBGr16, iBGg16, iBGb16, iBGa16, iCr16, iCg16, iCb16, iCa16) /* and return the composed values */ *pScanline = (mng_uint8)(iCr16 >> 8); *(pScanline+1) = (mng_uint8)(iCg16 >> 8); *(pScanline+2) = (mng_uint8)(iCb16 >> 8); *pAlphaline = (mng_uint8)(iCa16 >> 8); } } } pScanline += (pData->iColinc * 3); pAlphaline += pData->iColinc; pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iFGa8 = *(pDataline+3); /* get alpha values */ iBGa8 = *pAlphaline; if (iFGa8) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa8 == 0xFF) || (iBGa8 == 0)) { /* then simply copy the values */ *pScanline = *pDataline; *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *(pDataline+2); *pAlphaline = *(pDataline+3); } else { if (iBGa8 == 0xFF) /* background fully opaque ? */ { /* do alpha composing */ MNG_COMPOSE8 (*pScanline, *pDataline, iFGa8, *pScanline ) MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *(pDataline+2), iFGa8, *(pScanline+2)) /* alpha remains fully opaque !!! */ } else { /* now blend */ MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, *pScanline, *(pScanline+1), *(pScanline+2), iBGa8, iCr8, iCg8, iCb8, iCa8) /* and return the composed values */ *pScanline = iCr8; *(pScanline+1) = iCg8; *(pScanline+2) = iCb8; *pAlphaline = iCa8; } } } pScanline += (pData->iColinc * 3); pAlphaline += pData->iColinc; pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_RGB8_A8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_bgr8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iA16; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint8 iA8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol * 3) + (pData->iDestl * 3); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 8; else pDataline = pDataline + (pData->iSourcel / pData->iColinc) * 4; if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *(pDataline+4); *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *pDataline; pScanline += (pData->iColinc * 3); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *(pDataline+2); *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *pDataline; pScanline += (pData->iColinc * 3); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha value */ iA16 = mng_get_uint16 (pDataline+6); if (iA16) /* any opacity at all ? */ { if (iA16 == 0xFFFF) /* fully opaque ? */ { /* scale down by dropping the LSB */ *pScanline = *(pDataline+4); *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *pDataline; } else { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+2)); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*pScanline ); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iA16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iA16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iA16, iBGb16) /* and return the composed values */ *pScanline = (mng_uint8)(iFGb16 >> 8); *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); *(pScanline+2) = (mng_uint8)(iFGr16 >> 8); } } pScanline += (pData->iColinc * 3); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iA8 = *(pDataline+3); /* get alpha value */ if (iA8) /* any opacity at all ? */ { if (iA8 == 0xFF) /* fully opaque ? */ { /* then simply copy the values */ *pScanline = *(pDataline+2); *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *pDataline; } else { /* do alpha composing */ MNG_COMPOSE8 (*pScanline, *(pDataline+2), iA8, *pScanline ) MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iA8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *pDataline, iA8, *(pScanline+2)) } } pScanline += (pData->iColinc * 3); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_BGR8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_bgra8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iFGa16, iBGa16, iCa16; mng_uint8 iFGa8, iBGa8, iCa8; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint16 iCr16, iCg16, iCb16; mng_uint8 iCr8, iCg8, iCb8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *(pDataline+4); *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *pDataline; *(pScanline+3) = *(pDataline+6); pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *(pDataline+2); *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *pDataline; *(pScanline+3) = *(pDataline+3); pScanline += (pData->iColinc << 2); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha values */ iFGa16 = mng_get_uint16 (pDataline+6); iBGa16 = (mng_uint16)(*(pScanline+3)); iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; if (iFGa16) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) { /* plain copy it */ *pScanline = *(pDataline+4); *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *pDataline; *(pScanline+3) = *(pDataline+6); } else { if (iBGa16 == 0xFFFF) /* background fully opaque ? */ { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+2)); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*pScanline ); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16) /* and return the composed values */ *pScanline = (mng_uint8)(iFGb16 >> 8); *(pScanline+1) = (mng_uint8)(iFGg16 >> 8); *(pScanline+2) = (mng_uint8)(iFGr16 >> 8); /* alpha remains fully opaque !!! */ } else { /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+2)); iBGg16 = (mng_uint16)(*(pScanline+1)); iBGb16 = (mng_uint16)(*pScanline ); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* let's blend */ MNG_BLEND16 (mng_get_uint16 (pDataline ), mng_get_uint16 (pDataline+2), mng_get_uint16 (pDataline+4), iFGa16, iBGr16, iBGg16, iBGb16, iBGa16, iCr16, iCg16, iCb16, iCa16) /* and return the composed values */ *pScanline = (mng_uint8)(iCb16 >> 8); *(pScanline+1) = (mng_uint8)(iCg16 >> 8); *(pScanline+2) = (mng_uint8)(iCr16 >> 8); *(pScanline+3) = (mng_uint8)(iCa16 >> 8); } } } pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iFGa8 = *(pDataline+3); /* get alpha values */ iBGa8 = *(pScanline+3); if (iFGa8) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa8 == 0xFF) || (iBGa8 == 0)) { /* then simply copy the values */ *pScanline = *(pDataline+2); *(pScanline+1) = *(pDataline+1); *(pScanline+2) = *pDataline; *(pScanline+3) = *(pDataline+3); } else { if (iBGa8 == 0xFF) /* background fully opaque ? */ { /* do alpha composing */ MNG_COMPOSE8 (*pScanline, *(pDataline+2), iFGa8, *pScanline ) MNG_COMPOSE8 (*(pScanline+1), *(pDataline+1), iFGa8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *pDataline, iFGa8, *(pScanline+2)) /* alpha remains fully opaque !!! */ } else { /* now blend */ MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, *(pScanline+2), *(pScanline+1), *pScanline, iBGa8, iCr8, iCg8, iCb8, iCa8) /* and return the composed values */ *pScanline = iCb8; *(pScanline+1) = iCg8; *(pScanline+2) = iCr8; *(pScanline+3) = iCa8; } } } pScanline += (pData->iColinc << 2); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_bgra8_pm (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint32 s, t; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ if ((s = pDataline[6]) == 0) *(mng_uint32*) pScanline = 0; /* set all components = 0 */ else { if (s == 255) { pScanline[0] = pDataline[4]; pScanline[1] = pDataline[2]; pScanline[2] = pDataline[0]; pScanline[3] = 255; } else { pScanline[0] = DIV255B8(s * pDataline[4]); pScanline[1] = DIV255B8(s * pDataline[2]); pScanline[2] = DIV255B8(s * pDataline[0]); pScanline[3] = (mng_uint8)s; } } pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values and premultiply */ if ((s = pDataline[3]) == 0) *(mng_uint32*) pScanline = 0; /* set all components = 0 */ else { if (s == 255) { pScanline[0] = pDataline[2]; pScanline[1] = pDataline[1]; pScanline[2] = pDataline[0]; pScanline[3] = 255; } else { pScanline[0] = DIV255B8(s * pDataline[2]); pScanline[1] = DIV255B8(s * pDataline[1]); pScanline[2] = DIV255B8(s * pDataline[0]); pScanline[3] = (mng_uint8)s; } } pScanline += (pData->iColinc << 2); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha values */ if ((s = pDataline[6]) != 0) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if (s == 255) { /* plain copy it */ pScanline[0] = pDataline[4]; pScanline[1] = pDataline[2]; pScanline[2] = pDataline[0]; pScanline[3] = 255; } else { /* now blend (premultiplied) */ t = 255 - s; pScanline[0] = DIV255B8(s * pDataline[4] + t * pScanline[0]); pScanline[1] = DIV255B8(s * pDataline[2] + t * pScanline[1]); pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); } } pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { if ((s = pDataline[3]) != 0) /* any opacity at all ? */ { /* fully opaque ? */ if (s == 255) { /* then simply copy the values */ pScanline[0] = pDataline[2]; pScanline[1] = pDataline[1]; pScanline[2] = pDataline[0]; pScanline[3] = 255; } else { /* now blend (premultiplied) */ t = 255 - s; pScanline[0] = DIV255B8(s * pDataline[2] + t * pScanline[0]); pScanline[1] = DIV255B8(s * pDataline[1] + t * pScanline[1]); pScanline[2] = DIV255B8(s * pDataline[0] + t * pScanline[2]); pScanline[3] = (mng_uint8)(255 - DIV255B8(t * (255 - pScanline[3]))); } } pScanline += (pData->iColinc << 2); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_BGRA8PM, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode display_abgr8 (mng_datap pData) { mng_uint8p pScanline; mng_uint8p pDataline; mng_int32 iX; mng_uint16 iFGa16, iBGa16, iCa16; mng_uint8 iFGa8, iBGa8, iCa8; mng_uint16 iFGr16, iFGg16, iFGb16; mng_uint16 iBGr16, iBGg16, iBGb16; mng_uint16 iCr16, iCg16, iCb16; mng_uint8 iCr8, iCg8, iCb8; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_START) #endif /* viewable row ? */ if ((pData->iRow >= pData->iSourcet) && (pData->iRow < pData->iSourceb)) { /* address destination row */ pScanline = (mng_uint8p)pData->fGetcanvasline (((mng_handle)pData), pData->iRow + pData->iDestt - pData->iSourcet); /* adjust destination row starting-point */ pScanline = pScanline + (pData->iCol << 2) + (pData->iDestl << 2); pDataline = pData->pRGBArow; /* address source row */ if (pData->bIsRGBA16) /* adjust source row starting-point */ pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 3); else pDataline = pDataline + ((pData->iSourcel / pData->iColinc) << 2); if (pData->bIsOpaque) /* forget about transparency ? */ { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* scale down by dropping the LSB */ *pScanline = *(pDataline+6); *(pScanline+1) = *(pDataline+4); *(pScanline+2) = *(pDataline+2); *(pScanline+3) = *pDataline; pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* copy the values */ *pScanline = *(pDataline+3); *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+1); *(pScanline+3) = *pDataline; pScanline += (pData->iColinc << 2); pDataline += 4; } } } else { if (pData->bIsRGBA16) /* 16-bit input row ? */ { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { /* get alpha values */ iFGa16 = mng_get_uint16 (pDataline+6); iBGa16 = (mng_uint16)(*pScanline); iBGa16 = (mng_uint16)(iBGa16 << 8) | iBGa16; if (iFGa16) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa16 == 0xFFFF) || (iBGa16 == 0)) { /* plain copy it */ *pScanline = *(pDataline+6); *(pScanline+1) = *(pDataline+4); *(pScanline+2) = *(pDataline+2); *(pScanline+3) = *pDataline; } else { if (iBGa16 == 0xFFFF) /* background fully opaque ? */ { /* get the proper values */ iFGr16 = mng_get_uint16 (pDataline ); iFGg16 = mng_get_uint16 (pDataline+2); iFGb16 = mng_get_uint16 (pDataline+4); /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+3)); iBGg16 = (mng_uint16)(*(pScanline+2)); iBGb16 = (mng_uint16)(*(pScanline+1)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* now compose */ MNG_COMPOSE16(iFGr16, iFGr16, iFGa16, iBGr16) MNG_COMPOSE16(iFGg16, iFGg16, iFGa16, iBGg16) MNG_COMPOSE16(iFGb16, iFGb16, iFGa16, iBGb16) /* and return the composed values */ /* alpha itself remains fully opaque !!! */ *(pScanline+1) = (mng_uint8)(iFGb16 >> 8); *(pScanline+2) = (mng_uint8)(iFGg16 >> 8); *(pScanline+3) = (mng_uint8)(iFGr16 >> 8); } else { /* scale background up */ iBGr16 = (mng_uint16)(*(pScanline+3)); iBGg16 = (mng_uint16)(*(pScanline+2)); iBGb16 = (mng_uint16)(*(pScanline+1)); iBGr16 = (mng_uint16)((mng_uint32)iBGr16 << 8) | iBGr16; iBGg16 = (mng_uint16)((mng_uint32)iBGg16 << 8) | iBGg16; iBGb16 = (mng_uint16)((mng_uint32)iBGb16 << 8) | iBGb16; /* let's blend */ MNG_BLEND16 (mng_get_uint16 (pDataline ), mng_get_uint16 (pDataline+2), mng_get_uint16 (pDataline+4), iFGa16, iBGr16, iBGg16, iBGb16, iBGa16, iCr16, iCg16, iCb16, iCa16) /* and return the composed values */ *pScanline = (mng_uint8)(iCa16 >> 8); *(pScanline+1) = (mng_uint8)(iCb16 >> 8); *(pScanline+2) = (mng_uint8)(iCg16 >> 8); *(pScanline+3) = (mng_uint8)(iCr16 >> 8); } } } pScanline += (pData->iColinc << 2); pDataline += 8; } } else { for (iX = pData->iSourcel + pData->iCol; iX < pData->iSourcer; iX += pData->iColinc) { iFGa8 = *(pDataline+3); /* get alpha values */ iBGa8 = *pScanline; if (iFGa8) /* any opacity at all ? */ { /* fully opaque or background fully transparent ? */ if ((iFGa8 == 0xFF) || (iBGa8 == 0)) { /* then simply copy the values */ *pScanline = *(pDataline+3); *(pScanline+1) = *(pDataline+2); *(pScanline+2) = *(pDataline+1); *(pScanline+3) = *pDataline; } else { if (iBGa8 == 0xFF) /* background fully opaque ? */ { /* do simple alpha composing */ /* alpha itself remains fully opaque !!! */ MNG_COMPOSE8 (*(pScanline+1), *(pDataline+2), iFGa8, *(pScanline+1)) MNG_COMPOSE8 (*(pScanline+2), *(pDataline+1), iFGa8, *(pScanline+2)) MNG_COMPOSE8 (*(pScanline+3), *pDataline, iFGa8, *(pScanline+3)) } else { /* now blend */ MNG_BLEND8 (*pDataline, *(pDataline+1), *(pDataline+2), iFGa8, *(pScanline+3), *(pScanline+2), *(pScanline+1), iBGa8, iCr8, iCg8, iCb8, iCa8) /* and return the composed values */ *pScanline = iCa8; *(pScanline+1) = iCb8; *(pScanline+2) = iCg8; *(pScanline+3) = iCr8; } } } pScanline += (pData->iColinc << 2); pDataline += 4; } } } } check_update_region (pData); #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_ABGR8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Background restore routines - restore the background with info from * */ /* * the BACK and/or bKGD chunk or the app's background canvas * */ /* * * */ /* ************************************************************************** */ mng_retcode restore_bkgd_backimage (mng_datap pData) { mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BACKIMAGE, MNG_LC_START) #endif /* make it easy on yourself */ iRetcode = restore_bkgd_backcolor (pData); if (iRetcode) /* on error bail out */ return iRetcode; /* TODO: loading the background-image */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BACKIMAGE, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode restore_bkgd_backcolor (mng_datap pData) { mng_int32 iX; mng_uint8p pWork = pData->pRGBArow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BACKCOLOR, MNG_LC_START) #endif for (iX = pData->iSourcel; iX < pData->iSourcer; iX++) { /* ok; drop the background-color in there */ *pWork = (mng_uint8)(pData->iBACKred >> 8); *(pWork+1) = (mng_uint8)(pData->iBACKgreen >> 8); *(pWork+2) = (mng_uint8)(pData->iBACKblue >> 8); *(pWork+3) = 0xFF; /* opaque! it's mandatory */ pWork += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BACKCOLOR, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode restore_bkgd_bkgd (mng_datap pData) { mng_int32 iX; mng_uint8p pWork = pData->pRGBArow; mng_imagep pImage; mng_imagedatap pBuf; mng_uint8 iRed = 0; mng_uint8 iGreen = 0; mng_uint8 iBlue = 0; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BKGD, MNG_LC_START) #endif /* determine the correct image buffer */ pImage = (mng_imagep)pData->pCurrentobj; if (!pImage) pImage = (mng_imagep)pData->pObjzero; pBuf = pImage->pImgbuf; switch (pBuf->iColortype) { case 0 : ; /* gray types */ case 4 : { mng_uint8 iGray; if (pBuf->iBitdepth > 8) iGray = (mng_uint8)(pBuf->iBKGDgray >> 8); else { iGray = (mng_uint8)pBuf->iBKGDgray; /* please note how tricky the next code is !! */ switch (pBuf->iBitdepth) { case 1 : iGray = (mng_uint8)((iGray << 1) + iGray); case 2 : iGray = (mng_uint8)((iGray << 2) + iGray); case 4 : iGray = (mng_uint8)((iGray << 4) + iGray); } } iRed = iGray; iGreen = iGray; iBlue = iGray; break; } case 3 : { /* indexed type */ iRed = pBuf->aPLTEentries [pBuf->iBKGDindex].iRed; iGreen = pBuf->aPLTEentries [pBuf->iBKGDindex].iGreen; iBlue = pBuf->aPLTEentries [pBuf->iBKGDindex].iBlue; break; } case 2 : ; /* rgb types */ case 6 : { if (pBuf->iBitdepth > 8) { iRed = (mng_uint8)(pBuf->iBKGDred >> 8); iGreen = (mng_uint8)(pBuf->iBKGDgreen >> 8); iBlue = (mng_uint8)(pBuf->iBKGDblue >> 8); } else { iRed = (mng_uint8)(pBuf->iBKGDred ); iGreen = (mng_uint8)(pBuf->iBKGDgreen); iBlue = (mng_uint8)(pBuf->iBKGDblue ); } break; } } for (iX = pData->iSourcel; iX < pData->iSourcer; iX++) { *pWork = iRed; *(pWork+1) = iGreen; *(pWork+2) = iBlue; *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ pWork += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BKGD, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode restore_bkgd_bgcolor (mng_datap pData) { mng_int32 iX; mng_uint8p pWork = pData->pRGBArow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BGCOLOR, MNG_LC_START) #endif for (iX = pData->iSourcel; iX < pData->iSourcer; iX++) { /* ok; drop the background-color in there */ *pWork = (mng_uint8)(pData->iBGred >> 8); *(pWork+1) = (mng_uint8)(pData->iBGgreen >> 8); *(pWork+2) = (mng_uint8)(pData->iBGblue >> 8); *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ pWork += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BGCOLOR, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode restore_bkgd_rgb8 (mng_datap pData) { mng_int32 iX; mng_uint8p pBkgd; mng_uint8p pWork = pData->pRGBArow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_RGB8, MNG_LC_START) #endif if (pData->fGetbkgdline) /* can we access the background ? */ { /* point to the right pixel then */ pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, pData->iRow + pData->iDestt) + (3 * pData->iDestl); for (iX = pData->iSourcel; iX < pData->iSourcer; iX++) { *pWork = *pBkgd; /* ok; copy the pixel */ *(pWork+1) = *(pBkgd+1); *(pWork+2) = *(pBkgd+2); *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ pWork += 4; pBkgd += 3; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode restore_bkgd_bgr8 (mng_datap pData) { mng_int32 iX; mng_uint8p pBkgd; mng_uint8p pWork = pData->pRGBArow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BGR8, MNG_LC_START) #endif if (pData->fGetbkgdline) /* can we access the background ? */ { /* point to the right pixel then */ pBkgd = (mng_uint8p)pData->fGetbkgdline ((mng_handle)pData, pData->iRow + pData->iDestt) + (3 * pData->iDestl); for (iX = pData->iSourcel; iX < pData->iSourcer; iX++) { *pWork = *(pBkgd+2); /* ok; copy the pixel */ *(pWork+1) = *(pBkgd+1); *(pWork+2) = *pBkgd; *(pWork+3) = 0x00; /* transparant for alpha-canvasses */ pWork += 4; pBkgd += 3; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RESTORE_BGR8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Row retrieval routines - retrieve processed & uncompressed row-data * */ /* * from the current "object" * */ /* * * */ /* ************************************************************************** */ /* TODO: a serious optimization is to retrieve only those pixels that will actually be displayed; this would require changes in the "display_image" routine (in mng_display.c) & all the "retrieve_xxx" routines below & the "display_xxx" routines above !!!!! NOTE that "correct_xxx" routines would not require modification */ mng_retcode retrieve_g8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iG; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_G8, MNG_LC_START) #endif pRGBArow = pData->pRGBArow; /* temporary work pointers */ pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); if (pBuf->bHasTRNS) /* tRNS in buffer ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iG = *pWorkrow; /* get the gray-value */ /* is it transparent ? */ if ((mng_uint16)iG == pBuf->iTRNSgray) { *pRGBArow = 0x00; /* nuttin to display */ *(pRGBArow+1) = 0x00; *(pRGBArow+2) = 0x00; *(pRGBArow+3) = 0x00; } else { switch (pBuf->iBitdepth) /* LBR to 8-bits ! */ { case 1 : iG = (mng_uint8)((iG << 1) + iG); case 2 : iG = (mng_uint8)((iG << 2) + iG); case 4 : iG = (mng_uint8)((iG << 4) + iG); } *pRGBArow = iG; /* put in intermediate row */ *(pRGBArow+1) = iG; *(pRGBArow+2) = iG; *(pRGBArow+3) = 0xFF; } pWorkrow++; /* next pixel */ pRGBArow += 4; } } else { for (iX = 0; iX < pData->iRowsamples; iX++) { iG = *pWorkrow; /* get the gray-value */ switch (pBuf->iBitdepth) /* LBR to 8-bits ! */ { case 1 : iG = (mng_uint8)((iG << 1) + iG); case 2 : iG = (mng_uint8)((iG << 2) + iG); case 4 : iG = (mng_uint8)((iG << 4) + iG); } *pRGBArow = iG; /* put in intermediate row */ *(pRGBArow+1) = iG; *(pRGBArow+2) = iG; *(pRGBArow+3) = 0xFF; pWorkrow++; /* next pixel */ pRGBArow += 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_G8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_g16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint16 iG; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_G16, MNG_LC_START) #endif /* temporary work pointers */ pRGBArow = pData->pRGBArow; pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); if (pBuf->bHasTRNS) /* tRNS in buffer ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iG = mng_get_uint16 (pWorkrow); /* get the gray-value */ /* is it transparent ? */ if (iG == pBuf->iTRNSgray) { /* nuttin to display */ mng_put_uint16 (pRGBArow, 0x0000); mng_put_uint16 (pRGBArow+2, 0x0000); mng_put_uint16 (pRGBArow+4, 0x0000); mng_put_uint16 (pRGBArow+6, 0x0000); } else { /* put in intermediate row */ mng_put_uint16 (pRGBArow, iG); mng_put_uint16 (pRGBArow+2, iG); mng_put_uint16 (pRGBArow+4, iG); mng_put_uint16 (pRGBArow+6, 0xFFFF); } pWorkrow += 2; /* next pixel */ pRGBArow += 8; } } else { for (iX = 0; iX < pData->iRowsamples; iX++) { iG = mng_get_uint16 (pWorkrow); /* get the gray-value */ mng_put_uint16 (pRGBArow, iG); /* and put in intermediate row */ mng_put_uint16 (pRGBArow+2, iG); mng_put_uint16 (pRGBArow+4, iG); mng_put_uint16 (pRGBArow+6, 0xFFFF); pWorkrow += 2; /* next pixel */ pRGBArow += 8; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_G16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_rgb8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iR, iG, iB; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB8, MNG_LC_START) #endif pRGBArow = pData->pRGBArow; /* temporary work pointers */ pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); if (pBuf->bHasTRNS) /* tRNS in buffer ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iR = *pWorkrow; /* get the rgb-values */ iG = *(pWorkrow+1); iB = *(pWorkrow+2); /* is it transparent ? */ if (((mng_uint16)iR == pBuf->iTRNSred ) && ((mng_uint16)iG == pBuf->iTRNSgreen) && ((mng_uint16)iB == pBuf->iTRNSblue ) ) { *pRGBArow = 0x00; /* nothing to display */ *(pRGBArow+1) = 0x00; *(pRGBArow+2) = 0x00; *(pRGBArow+3) = 0x00; } else { *pRGBArow = iR; /* put in intermediate row */ *(pRGBArow+1) = iG; *(pRGBArow+2) = iB; *(pRGBArow+3) = 0xFF; } pWorkrow += 3; /* next pixel */ pRGBArow += 4; } } else { for (iX = 0; iX < pData->iRowsamples; iX++) { *pRGBArow = *pWorkrow; /* just copy the pixel */ *(pRGBArow+1) = *(pWorkrow+1); *(pRGBArow+2) = *(pWorkrow+2); *(pRGBArow+3) = 0xFF; pWorkrow += 3; /* next pixel */ pRGBArow += 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_rgb16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint16 iR, iG, iB; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB16, MNG_LC_START) #endif /* temporary work pointers */ pRGBArow = pData->pRGBArow; pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); if (pBuf->bHasTRNS) /* tRNS in buffer ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iR = mng_get_uint16 (pWorkrow); /* get the rgb-values */ iG = mng_get_uint16 (pWorkrow+2); iB = mng_get_uint16 (pWorkrow+4); /* is it transparent ? */ if ((iR == pBuf->iTRNSred ) && (iG == pBuf->iTRNSgreen) && (iB == pBuf->iTRNSblue ) ) { /* nothing to display */ mng_put_uint16 (pRGBArow, 0x0000); mng_put_uint16 (pRGBArow+2, 0x0000); mng_put_uint16 (pRGBArow+4, 0x0000); mng_put_uint16 (pRGBArow+6, 0x0000); } else { /* put in intermediate row */ mng_put_uint16 (pRGBArow, iR); mng_put_uint16 (pRGBArow+2, iG); mng_put_uint16 (pRGBArow+4, iB); mng_put_uint16 (pRGBArow+6, 0xFFFF); } pWorkrow += 6; /* next pixel */ pRGBArow += 8; } } else { for (iX = 0; iX < pData->iRowsamples; iX++) { /* just copy the pixel */ mng_put_uint16 (pRGBArow, mng_get_uint16 (pWorkrow )); mng_put_uint16 (pRGBArow+2, mng_get_uint16 (pWorkrow+2)); mng_put_uint16 (pRGBArow+4, mng_get_uint16 (pWorkrow+4)); mng_put_uint16 (pRGBArow+6, 0xFFFF); pWorkrow += 6; /* next pixel */ pRGBArow += 8; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGB16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_idx8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_IDX8, MNG_LC_START) #endif pRGBArow = pData->pRGBArow; /* temporary work pointers */ pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); if (pBuf->bHasTRNS) /* tRNS in buffer ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iQ = *pWorkrow; /* get the index */ /* is it valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ *pRGBArow = pBuf->aPLTEentries [iQ].iRed; *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; /* transparency for this index ? */ if ((mng_uint32)iQ < pBuf->iTRNScount) *(pRGBArow+3) = pBuf->aTRNSentries [iQ]; else *(pRGBArow+3) = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pWorkrow++; /* next pixel */ pRGBArow += 4; } } else { for (iX = 0; iX < pData->iRowsamples; iX++) { iQ = *pWorkrow; /* get the index */ /* is it valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ *pRGBArow = pBuf->aPLTEentries [iQ].iRed; *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; *(pRGBArow+3) = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pWorkrow++; /* next pixel */ pRGBArow += 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_IDX8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_ga8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iG; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_GA8, MNG_LC_START) #endif pRGBArow = pData->pRGBArow; /* temporary work pointers */ pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); for (iX = 0; iX < pData->iRowsamples; iX++) { iG = *pWorkrow; /* get the gray-value */ *pRGBArow = iG; /* put in intermediate row */ *(pRGBArow+1) = iG; *(pRGBArow+2) = iG; *(pRGBArow+3) = *(pWorkrow+1); pWorkrow += 2; /* next pixel */ pRGBArow += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_GA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_ga16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint16 iG; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_GA16, MNG_LC_START) #endif /* temporary work pointers */ pRGBArow = pData->pRGBArow; pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); for (iX = 0; iX < pData->iRowsamples; iX++) { iG = mng_get_uint16 (pWorkrow); /* get the gray-value */ mng_put_uint16 (pRGBArow, iG); /* and put in intermediate row */ mng_put_uint16 (pRGBArow+2, iG); mng_put_uint16 (pRGBArow+4, iG); mng_put_uint16 (pRGBArow+6, mng_get_uint16 (pWorkrow+2)); pWorkrow += 4; /* next pixel */ pRGBArow += 8; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_GA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_rgba8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA8, MNG_LC_START) #endif pRGBArow = pData->pRGBArow; /* temporary work pointers */ pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); /* can't be easier than this ! */ MNG_COPY (pRGBArow, pWorkrow, pBuf->iRowsize) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode retrieve_rgba16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pRetrieveobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pRGBArow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA16, MNG_LC_START) #endif /* temporary work pointers */ pRGBArow = pData->pRGBArow; pWorkrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize); /* can't be easier than this ! */ MNG_COPY (pRGBArow, pWorkrow, pBuf->iRowsize) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_RETRIEVE_RGBA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Row storage routines - store processed & uncompressed row-data * */ /* * into the current "object" * */ /* * * */ /* ************************************************************************** */ mng_retcode store_g1 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it white ? */ *pOutrow = 0x01; /* white */ else *pOutrow = 0x00; /* black */ pOutrow += pData->iColinc; /* next pixel */ iM >>= 1; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_g2 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } iQ = (mng_uint8)((iB & iM) >> iS); /* get the gray level */ *pOutrow = iQ; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ iM >>= 2; iS -= 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_g4 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } iQ = (mng_uint8)((iB & iM) >> iS); /* get the gray level */ *pOutrow = iQ; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ iM >>= 4; iS -= 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_g8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_g16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { /* copy into object buffer */ mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow)); pOutrow += (pData->iColinc << 1); /* next pixel */ pWorkrow += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_G16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_rgb8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGB8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* copy the RGB bytes */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); pWorkrow += 3; /* next pixel */ pOutrow += (pData->iColinc * 3); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_rgb16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGB16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { MNG_COPY (pOutrow, pWorkrow, 6) /* copy the RGB bytes */ pWorkrow += 6; /* next pixel */ pOutrow += (pData->iColinc * 6); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGB16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_idx1 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* store the index */ *pOutrow = 0x01; else *pOutrow = 0x00; pOutrow += pData->iColinc; /* next pixel */ iM >>= 1; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_idx2 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* store the index */ *pOutrow = (mng_uint8)((iB & iM) >> iS); pOutrow += pData->iColinc; /* next pixel */ iM >>= 2; iS -= 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_idx4 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* store the index */ *pOutrow = (mng_uint8)((iB & iM) >> iS); pOutrow += pData->iColinc; /* next pixel */ iM >>= 4; iS -= 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_idx8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_IDX8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_ga8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_GA8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* copy the GA bytes */ *(pOutrow+1) = *(pWorkrow+1); pWorkrow += 2; /* next pixel */ pOutrow += (pData->iColinc << 1); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_GA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_ga16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_GA16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { MNG_COPY (pOutrow, pWorkrow, 4) /* copy the GA bytes */ pWorkrow += 4; /* next pixel */ pOutrow += (pData->iColinc << 2); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_GA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_rgba8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGBA8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* copy the RGBA bytes */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); *(pOutrow+3) = *(pWorkrow+3); pWorkrow += 4; /* next pixel */ pOutrow += (pData->iColinc << 2); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGBA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode store_rgba16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGBA16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); for (iX = 0; iX < pData->iRowsamples; iX++) { MNG_COPY (pOutrow, pWorkrow, 8) /* copy the RGBA bytes */ pWorkrow += 8; /* next pixel */ pOutrow += (pData->iColinc << 3); } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_RGBA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Row storage routines (JPEG) - store processed & uncompressed row-data * */ /* * into the current "object" * */ /* * * */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG /* ************************************************************************** */ mng_retcode store_jpeg_g8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8, MNG_LC_START) #endif pWorkrow = pData->pJPEGrow; /* temporary work pointers */ pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); /* easy as pie ... */ MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8, MNG_LC_END) #endif return next_jpeg_row (pData); /* we've got one more row of gray-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8, MNG_LC_START) #endif pWorkrow = pData->pJPEGrow; /* temporary work pointers */ pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); /* easy as pie ... */ MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples * 3) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8, MNG_LC_END) #endif return next_jpeg_row (pData); /* we've got one more row of rgb-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_ga8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_GA8, MNG_LC_START) #endif pWorkrow = pData->pJPEGrow; /* temporary work pointers */ pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* copy into object buffer */ pOutrow += 2; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_GA8, MNG_LC_END) #endif return next_jpeg_row (pData); /* we've got one more row of gray-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgba8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGBA8, MNG_LC_START) #endif pWorkrow = pData->pJPEGrow; /* temporary work pointers */ pOutrow = pBuf->pImgdata + (pData->iJPEGrow * pBuf->iRowsize); for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* copy pixel into object buffer */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); pOutrow += 4; /* next pixel */ pWorkrow += 3; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGBA8, MNG_LC_END) #endif return next_jpeg_row (pData); /* we've got one more row of rgb-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g8_alpha (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_ALPHA, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pJPEGrow2; pOutrow = pBuf->pImgdata + (pData->iJPEGalpharow * pBuf->iRowsize) + 1; for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += 2; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_ALPHA, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8_alpha (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_ALPHA, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pJPEGrow2; pOutrow = pBuf->pImgdata + (pData->iJPEGalpharow * pBuf->iRowsize) + 3; for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += 4; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_ALPHA, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g8_a1 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 1; iM = 0; /* start at pixel 0 */ iB = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it opaque ? */ *pOutrow = 0xFF; /* opaque */ else *pOutrow = 0x00; /* transparent */ pOutrow += 2; /* next pixel */ iM >>= 1; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A1, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g8_a2 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 1; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } switch ((iB & iM) >> iS) /* determine the alpha level */ { case 0x03 : { *pOutrow = 0xFF; break; } case 0x02 : { *pOutrow = 0xAA; break; } case 0x01 : { *pOutrow = 0x55; break; } default : { *pOutrow = 0x00; } } pOutrow += 2; /* next pixel */ iM >>= 2; iS -= 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A2, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g8_a4 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 1; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the alpha level */ iQ = (mng_uint8)((iB & iM) >> iS); iQ = (mng_uint8)(iQ + (iQ << 4)); /* expand to 8-bit by replication */ *pOutrow = iQ; /* put in object buffer */ pOutrow += 2; /* next pixel */ iM >>= 4; iS -= 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A4, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g8_a8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 1; for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += 2; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A8, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g8_a16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 1; for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* only high-order byte! */ pOutrow += 2; /* next pixel */ pWorkrow += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G8_A16, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8_a1 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 3; iM = 0; /* start at pixel 0 */ iB = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it opaque ? */ *pOutrow = 0xFF; /* opaque */ else *pOutrow = 0x00; /* transparent */ pOutrow += 4; /* next pixel */ iM >>= 1; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A1, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8_a2 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 3; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } switch ((iB & iM) >> iS) /* determine the alpha level */ { case 0x03 : { *pOutrow = 0xFF; break; } case 0x02 : { *pOutrow = 0xAA; break; } case 0x01 : { *pOutrow = 0x55; break; } default : { *pOutrow = 0x00; } } pOutrow += 4; /* next pixel */ iM >>= 2; iS -= 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A2, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8_a4 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 3; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the alpha level */ iQ = (mng_uint8)((iB & iM) >> iS); iQ = (mng_uint8)(iQ + (iQ << 4)); /* expand to 8-bit by replication */ *pOutrow = iQ; /* put in object buffer */ pOutrow += 4; /* next pixel */ iM >>= 4; iS -= 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A4, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8_a8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 3; for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in buffer */ pOutrow += 4; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A8, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_rgb8_a16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 3; for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* only high-order byte */ pOutrow += 4; /* next pixel */ pWorkrow += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_RGB8_A16, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g12_a1 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 2; iM = 0; /* start at pixel 0 */ iB = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* opaque ? */ mng_put_uint16 (pOutrow, 0xFFFF);/* opaque */ else mng_put_uint16 (pOutrow, 0x0000);/* transparent */ pOutrow += 4; /* next pixel */ iM >>= 1; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A1, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g12_a2 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 2; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } switch ((iB & iM) >> iS) /* determine the gray level */ { case 0x03 : { mng_put_uint16 (pOutrow, 0xFFFF); break; } case 0x02 : { mng_put_uint16 (pOutrow, 0xAAAA); break; } case 0x01 : { mng_put_uint16 (pOutrow, 0x5555); break; } default : { mng_put_uint16 (pOutrow, 0x0000); } } pOutrow += 4; /* next pixel */ iM >>= 2; iS -= 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A2, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g12_a4 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint16 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 2; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the gray level */ iQ = (mng_uint16)((iB & iM) >> iS); iQ = (mng_uint16)(iQ + (iQ << 4)); /* expand to 16-bit by replication */ iQ = (mng_uint16)(iQ + (iQ << 8)); /* put in object buffer */ mng_put_uint16 (pOutrow, iQ); pOutrow += 4; /* next pixel */ iM >>= 4; iS -= 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A4, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g12_a8 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint16 iW; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 2; for (iX = 0; iX < pData->iRowsamples; iX++) { iW = (mng_uint16)(*pWorkrow); /* get input byte */ iW = (mng_uint16)(iW + (iW << 8)); /* expand to 16-bit by replication */ mng_put_uint16 (pOutrow, iW); /* put in object buffer */ pOutrow += 4; /* next pixel */ pWorkrow++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A8, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ mng_retcode store_jpeg_g12_a16 (mng_datap pData) { mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 2; for (iX = 0; iX < pData->iRowsamples; iX++) { /* copy it */ mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow)); pOutrow += 4; /* next pixel */ pWorkrow += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_STORE_JPEG_G12_A16, MNG_LC_END) #endif return next_jpeg_alpharow (pData); /* we've got one more row of alpha-samples */ } /* ************************************************************************** */ #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ /* * * */ /* * Delta-image row routines - apply the processed & uncompressed row-data * */ /* * onto the target "object" * */ /* * * */ /* ************************************************************************** */ mng_retcode delta_g1 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it white ? */ *pOutrow = 0xFF; /* white */ else *pOutrow = 0x00; /* black */ pOutrow += pData->iColinc; /* next pixel */ iM >>= 1; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* invert if it is white ? */ *pOutrow = (mng_uint8)(*pOutrow ^ 0xFF); pOutrow += pData->iColinc; /* next pixel */ iM >>= 1; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G1, MNG_LC_END) #endif return store_g1 (pData); } /* ************************************************************************** */ mng_retcode delta_g2 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } switch ((iB & iM) >> iS) /* determine the gray level */ { case 0x03 : { *pOutrow = 0xFF; break; } case 0x02 : { *pOutrow = 0xAA; break; } case 0x01 : { *pOutrow = 0x55; break; } default : { *pOutrow = 0x00; } } pOutrow += pData->iColinc; /* next pixel */ iM >>= 2; iS -= 2; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* determine the gray level */ switch (((*pOutrow >> 6) + ((iB & iM) >> iS)) & 0x03) { case 0x03 : { *pOutrow = 0xFF; break; } case 0x02 : { *pOutrow = 0xAA; break; } case 0x01 : { *pOutrow = 0x55; break; } default : { *pOutrow = 0x00; } } pOutrow += pData->iColinc; /* next pixel */ iM >>= 2; iS -= 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G2, MNG_LC_END) #endif return store_g2 (pData); } /* ************************************************************************** */ mng_retcode delta_g4 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the gray level */ iQ = (mng_uint8)((iB & iM) >> iS); /* expand to 8-bit by replication */ iQ = (mng_uint8)(iQ + (iQ << 4)); *pOutrow = iQ; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ iM >>= 4; iS -= 4; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the gray level */ iQ = (mng_uint8)(((*pOutrow >> 4) + ((iB & iM) >> iS)) & 0x0F); /* expand to 8-bit by replication */ iQ = (mng_uint8)(iQ + (iQ << 4)); *pOutrow = iQ; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ iM >>= 4; iS -= 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G4, MNG_LC_END) #endif return store_g4 (pData); } /* ************************************************************************** */ mng_retcode delta_g8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ pWorkrow++; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow); pOutrow += pData->iColinc; /* next pixel */ pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G8, MNG_LC_END) #endif return store_g8 (pData); } /* ************************************************************************** */ mng_retcode delta_g16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ *(pOutrow+1) = *(pWorkrow+1); /* next pixel */ pOutrow += (pData->iColinc << 1); pWorkrow += 2; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow) )); /* next pixel */ pOutrow += (pData->iColinc << 1); pWorkrow += 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G16, MNG_LC_END) #endif return store_g16 (pData); } /* ************************************************************************** */ mng_retcode delta_rgb8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); /* next pixel */ pOutrow += (pData->iColinc * 3); pWorkrow += 3; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow ); *(pOutrow+1) = (mng_uint8)(*(pOutrow+1) + *(pWorkrow+1)); *(pOutrow+2) = (mng_uint8)(*(pOutrow+2) + *(pWorkrow+2)); /* next pixel */ pOutrow += (pData->iColinc * 3); pWorkrow += 3; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB8, MNG_LC_END) #endif return store_rgb8 (pData); } /* ************************************************************************** */ mng_retcode delta_rgb16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); *(pOutrow+3) = *(pWorkrow+3); *(pOutrow+4) = *(pWorkrow+4); *(pOutrow+5) = *(pWorkrow+5); /* next pixel */ pOutrow += (pData->iColinc * 6); pWorkrow += 6; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow ) )); mng_put_uint16 (pOutrow+2, (mng_uint16)(mng_get_uint16 (pOutrow+2 ) + mng_get_uint16 (pWorkrow+2) )); mng_put_uint16 (pOutrow+4, (mng_uint16)(mng_get_uint16 (pOutrow+4 ) + mng_get_uint16 (pWorkrow+4) )); /* next pixel */ pOutrow += (pData->iColinc * 6); pWorkrow += 6; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB16, MNG_LC_END) #endif return store_rgb16 (pData); } /* ************************************************************************** */ mng_retcode delta_idx1 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX1, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* put the right index value */ *pOutrow = 1; else *pOutrow = 0; pOutrow += pData->iColinc; /* next pixel */ iM >>= 1; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* invert if it is non-zero index */ *pOutrow = (mng_uint8)(*pOutrow ^ 0x01); pOutrow += pData->iColinc; /* next pixel */ iM >>= 1; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX1, MNG_LC_END) #endif return store_idx1 (pData); } /* ************************************************************************** */ mng_retcode delta_idx2 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX2, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* put the index */ *pOutrow = (mng_uint8)((iB & iM) >> iS); pOutrow += pData->iColinc; /* next pixel */ iM >>= 2; iS -= 2; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* calculate the index */ *pOutrow = (mng_uint8)((*pOutrow + ((iB & iM) >> iS)) & 0x03); pOutrow += pData->iColinc; /* next pixel */ iM >>= 2; iS -= 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX2, MNG_LC_END) #endif return store_idx2 (pData); } /* ************************************************************************** */ mng_retcode delta_idx4 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX4, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* put the index */ *pOutrow = (mng_uint8)((iB & iM) >> iS); pOutrow += pData->iColinc; /* next pixel */ iM >>= 4; iS -= 4; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* calculate the index */ *pOutrow = (mng_uint8)((*pOutrow + ((iB & iM) >> iS)) & 0x0F); pOutrow += pData->iColinc; /* next pixel */ iM >>= 4; iS -= 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX4, MNG_LC_END) #endif return store_idx4 (pData); } /* ************************************************************************** */ mng_retcode delta_idx8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ pOutrow += pData->iColinc; /* next pixel */ pWorkrow++; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow); pOutrow += pData->iColinc; /* next pixel */ pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_IDX8, MNG_LC_END) #endif return store_idx8 (pData); } /* ************************************************************************** */ mng_retcode delta_ga8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ *(pOutrow+1) = *(pWorkrow+1); /* next pixel */ pOutrow += (pData->iColinc << 1); pWorkrow += 2; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow ); *(pOutrow+1) = (mng_uint8)(*(pOutrow+1) + *(pWorkrow+1)); /* next pixel */ pOutrow += (pData->iColinc << 1); pWorkrow += 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8, MNG_LC_END) #endif return store_ga8 (pData); } /* ************************************************************************** */ mng_retcode delta_ga16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); *(pOutrow+3) = *(pWorkrow+3); /* next pixel */ pOutrow += (pData->iColinc << 2); pWorkrow += 4; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow ) )); mng_put_uint16 (pOutrow+2, (mng_uint16)(mng_get_uint16 (pOutrow+2 ) + mng_get_uint16 (pWorkrow+2) )); /* next pixel */ pOutrow += (pData->iColinc << 2); pWorkrow += 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16, MNG_LC_END) #endif return store_ga16 (pData); } /* ************************************************************************** */ mng_retcode delta_rgba8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; /* put in object buffer */ *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); *(pOutrow+3) = *(pWorkrow+3); /* next pixel */ pOutrow += (pData->iColinc << 2); pWorkrow += 4; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ *pOutrow = (mng_uint8)(*pOutrow + *pWorkrow ); *(pOutrow+1) = (mng_uint8)(*(pOutrow+1) + *(pWorkrow+1)); *(pOutrow+2) = (mng_uint8)(*(pOutrow+2) + *(pWorkrow+2)); *(pOutrow+3) = (mng_uint8)(*(pOutrow+3) + *(pWorkrow+3)); /* next pixel */ pOutrow += (pData->iColinc << 2); pWorkrow += 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8, MNG_LC_END) #endif return store_rgba8 (pData); } /* ************************************************************************** */ mng_retcode delta_rgba16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pDeltaImage)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iDeltaBlocky * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + (pData->iDeltaBlockx * pBuf->iSamplesize); /* pixel replace ? */ if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) { for (iX = 0; iX < pData->iRowsamples; iX++) { MNG_COPY (pOutrow, pWorkrow, 8) /* put in object buffer */ /* next pixel */ pOutrow += (pData->iColinc << 3); pWorkrow += 8; } } else { /* pixel add ! */ for (iX = 0; iX < pData->iRowsamples; iX++) { /* add to object buffer */ mng_put_uint16 (pOutrow, (mng_uint16)(mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow ) )); mng_put_uint16 (pOutrow+2, (mng_uint16)(mng_get_uint16 (pOutrow+2 ) + mng_get_uint16 (pWorkrow+2) )); mng_put_uint16 (pOutrow+4, (mng_uint16)(mng_get_uint16 (pOutrow+4 ) + mng_get_uint16 (pWorkrow+4) )); mng_put_uint16 (pOutrow+6, (mng_uint16)(mng_get_uint16 (pOutrow+6 ) + mng_get_uint16 (pWorkrow+6) )); /* next pixel */ pOutrow += (pData->iColinc << 3); pWorkrow += 8; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16, MNG_LC_END) #endif return store_rgba16 (pData); } /* ************************************************************************** */ /* * * */ /* * Delta-image row routines - apply the source row onto the target * */ /* * * */ /* ************************************************************************** */ mng_retcode delta_g1_g1 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G1_G1, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0x01); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G1_G1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_g2_g2 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G2_G2, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0x03); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G2_G2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_g4_g4 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G4_G4, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0x0F); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G4_G4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_g8_g8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G8_G8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G8_G8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_g16_g16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G16_G16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples << 1)) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow) + mng_get_uint16 (pWorkrow)) & 0xFFFF)); pOutrow += 2; pWorkrow += 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_G16_G16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgb8_rgb8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB8_RGB8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples * 3) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < (pData->iRowsamples * 3); iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB8_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgb16_rgb16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB16_RGB16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples * 6)) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow )) & 0xFFFF)); mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); mng_put_uint16 (pOutrow+4, (mng_uint16)((mng_get_uint16 (pOutrow+4) + mng_get_uint16 (pWorkrow+4)) & 0xFFFF)); pOutrow += 6; pWorkrow += 6; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGB16_RGB16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_ga8_ga8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8_GA8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples << 1) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < (pData->iRowsamples << 1); iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8_GA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_ga8_g8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8_G8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; pOutrow += 2; pWorkrow++; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow += 2; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8_G8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_ga8_a8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8_A8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 1; if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; pOutrow += 2; pWorkrow++; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow += 2; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA8_A8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_ga16_ga16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16_GA16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples << 2)) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow )) & 0xFFFF)); mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); pOutrow += 4; pWorkrow += 4; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16_GA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_ga16_g16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16_A16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow)); pOutrow += 4; pWorkrow += 2; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow) + mng_get_uint16 (pWorkrow)) & 0xFFFF)); pOutrow += 4; pWorkrow += 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16_A16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_ga16_a16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16_G16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow+2, mng_get_uint16 (pWorkrow)); pOutrow += 4; pWorkrow += 2; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + mng_get_uint16 (pWorkrow)) & 0xFFFF)); pOutrow += 4; pWorkrow += 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_GA16_G16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgba8_rgba8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGBA8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, pData->iRowsamples << 2) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < (pData->iRowsamples << 2); iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow++; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGBA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgba8_rgb8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGB8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; *(pOutrow+1) = *(pWorkrow+1); *(pOutrow+2) = *(pWorkrow+2); pOutrow += 4; pWorkrow += 3; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow ) & 0xFF); *(pOutrow+1) = (mng_uint8)(((mng_uint16)*(pOutrow+1) + (mng_uint16)*(pWorkrow+1)) & 0xFF); *(pOutrow+2) = (mng_uint8)(((mng_uint16)*(pOutrow+2) + (mng_uint16)*(pWorkrow+2)) & 0xFF); pOutrow += 4; pWorkrow += 3; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgba8_a8 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_A8, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize) + 3; if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = *pWorkrow; pOutrow += 4; pWorkrow++; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { *pOutrow = (mng_uint8)(((mng_uint16)*pOutrow + (mng_uint16)*pWorkrow) & 0xFF); pOutrow += 4; pWorkrow++; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA8_A8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgba16_rgba16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGBA16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { MNG_COPY (pOutrow, pWorkrow, (pData->iRowsamples << 3)) } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow )) & 0xFFFF)); mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); mng_put_uint16 (pOutrow+4, (mng_uint16)((mng_get_uint16 (pOutrow+4) + mng_get_uint16 (pWorkrow+4)) & 0xFFFF)); mng_put_uint16 (pOutrow+6, (mng_uint16)((mng_get_uint16 (pOutrow+6) + mng_get_uint16 (pWorkrow+6)) & 0xFFFF)); pOutrow += 8; pWorkrow += 8; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGBA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgba16_rgb16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGB16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, mng_get_uint16 (pWorkrow )); mng_put_uint16 (pOutrow+2, mng_get_uint16 (pWorkrow+2)); mng_put_uint16 (pOutrow+4, mng_get_uint16 (pWorkrow+4)); pOutrow += 8; pWorkrow += 6; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow, (mng_uint16)((mng_get_uint16 (pOutrow ) + mng_get_uint16 (pWorkrow )) & 0xFFFF)); mng_put_uint16 (pOutrow+2, (mng_uint16)((mng_get_uint16 (pOutrow+2) + mng_get_uint16 (pWorkrow+2)) & 0xFFFF)); mng_put_uint16 (pOutrow+4, (mng_uint16)((mng_get_uint16 (pOutrow+4) + mng_get_uint16 (pWorkrow+4)) & 0xFFFF)); pOutrow += 8; pWorkrow += 6; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_RGB16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode delta_rgba16_a16 (mng_datap pData) { mng_imagedatap pBuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; mng_uint8p pWorkrow; mng_uint8p pOutrow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_A16, MNG_LC_START) #endif pWorkrow = pData->pRGBArow; pOutrow = pBuf->pImgdata + (pData->iRow * pBuf->iRowsize ) + (pData->iCol * pBuf->iSamplesize); if ((pData->iDeltatype == MNG_DELTATYPE_REPLACE ) || (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELREPLACE) ) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow+6, mng_get_uint16 (pWorkrow)); pOutrow += 8; pWorkrow += 2; } } else if (pData->iDeltatype == MNG_DELTATYPE_BLOCKPIXELADD) { for (iX = 0; iX < pData->iRowsamples; iX++) { mng_put_uint16 (pOutrow+6, (mng_uint16)((mng_get_uint16 (pOutrow+6) + mng_get_uint16 (pWorkrow)) & 0xFFFF)); pOutrow += 8; pWorkrow += 2; } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DELTA_RGBA16_A16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Delta-image row routines - scale the source to bitdepth of target * */ /* * * */ /* ************************************************************************** */ /* ************************************************************************** */ /* * * */ /* * Row processing routines - convert uncompressed data from zlib to * */ /* * managable row-data which serves as input to the color-management * */ /* * routines * */ /* * * */ /* ************************************************************************** */ mng_retcode process_g1 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G1, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; iM = 0; /* start at pixel 0 */ iB = 0; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { if (pBuf->iTRNSgray) /* white transparent ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it white ? */ /* transparent ! */ mng_put_uint32 (pRGBArow, 0x00000000); else /* opaque black */ mng_put_uint32 (pRGBArow, 0x000000FF); pRGBArow += 4; /* next pixel */ iM >>= 1; } } else /* black transparent */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it white ? */ /* opaque white */ mng_put_uint32 (pRGBArow, 0xFFFFFFFF); else /* transparent */ mng_put_uint32 (pRGBArow, 0x00000000); pRGBArow += 4; /* next pixel */ iM >>= 1; } } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else /* no transparency */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; } if (iB & iM) /* is it white ? */ /* opaque white */ mng_put_uint32 (pRGBArow, 0xFFFFFFFF); else /* opaque black */ mng_put_uint32 (pRGBArow, 0x000000FF); pRGBArow += 4; /* next pixel */ iM >>= 1; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_g2 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G2, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* determine gray level */ iQ = (mng_uint8)((iB & iM) >> iS); if (iQ == pBuf->iTRNSgray) /* transparent ? */ mng_put_uint32 (pRGBArow, 0x00000000); else { switch (iQ) /* determine the gray level */ { case 0x03 : { mng_put_uint32 (pRGBArow, 0xFFFFFFFF); break; } case 0x02 : { mng_put_uint32 (pRGBArow, 0xAAAAAAFF); break; } case 0x01 : { mng_put_uint32 (pRGBArow, 0x555555FF); break; } default : { mng_put_uint32 (pRGBArow, 0x000000FF); } } } pRGBArow += 4; /* next pixel */ iM >>= 2; iS -= 2; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } switch ((iB & iM) >> iS) /* determine the gray level */ { case 0x03 : { mng_put_uint32 (pRGBArow, 0xFFFFFFFF); break; } case 0x02 : { mng_put_uint32 (pRGBArow, 0xAAAAAAFF); break; } case 0x01 : { mng_put_uint32 (pRGBArow, 0x555555FF); break; } default : { mng_put_uint32 (pRGBArow, 0x000000FF); } } pRGBArow += 4; /* next pixel */ iM >>= 2; iS -= 2; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_g4 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G4, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the gray level */ iQ = (mng_uint8)((iB & iM) >> iS); if (iQ == pBuf->iTRNSgray) /* transparent ? */ { *pRGBArow = 0; /* put in intermediate row */ *(pRGBArow+1) = 0; *(pRGBArow+2) = 0; *(pRGBArow+3) = 0; } else { /* expand to 8-bit by replication */ iQ = (mng_uint8)(iQ + (iQ << 4)); *pRGBArow = iQ; /* put in intermediate row */ *(pRGBArow+1) = iQ; *(pRGBArow+2) = iQ; *(pRGBArow+3) = 0xFF; } pRGBArow += 4; /* next pixel */ iM >>= 4; iS -= 4; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the gray level */ iQ = (mng_uint8)((iB & iM) >> iS); iQ = (mng_uint8)(iQ + (iQ << 4));/* expand to 8-bit by replication */ *pRGBArow = iQ; /* put in intermediate row */ *(pRGBArow+1) = iQ; *(pRGBArow+2) = iQ; *(pRGBArow+3) = 0xFF; pRGBArow += 4; /* next pixel */ iM >>= 4; iS -= 4; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_g8 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G8, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iB = *pWorkrow; /* get next input-byte */ if (iB == pBuf->iTRNSgray) /* transparent ? */ { *pRGBArow = 0; /* put in intermediate row */ *(pRGBArow+1) = 0; *(pRGBArow+2) = 0; *(pRGBArow+3) = 0; } else { *pRGBArow = iB; /* put in intermediate row */ *(pRGBArow+1) = iB; *(pRGBArow+2) = iB; *(pRGBArow+3) = 0xFF; } pRGBArow += 4; /* next pixel */ pWorkrow++; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { iB = *pWorkrow; /* get next input-byte */ *pRGBArow = iB; /* put in intermediate row */ *(pRGBArow+1) = iB; *(pRGBArow+2) = iB; *(pRGBArow+3) = 0xFF; pRGBArow += 4; /* next pixel */ pWorkrow++; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_g16 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint16 iW; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G16, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iW = mng_get_uint16 (pWorkrow); /* get input */ if (iW == pBuf->iTRNSgray) /* transparent ? */ { /* put in intermediate row */ mng_put_uint16 (pRGBArow, 0); mng_put_uint16 (pRGBArow+2, 0); mng_put_uint16 (pRGBArow+4, 0); mng_put_uint16 (pRGBArow+6, 0); } else { /* put in intermediate row */ mng_put_uint16 (pRGBArow, iW); mng_put_uint16 (pRGBArow+2, iW); mng_put_uint16 (pRGBArow+4, iW); mng_put_uint16 (pRGBArow+6, 0xFFFF); } pRGBArow += 8; /* next pixel */ pWorkrow += 2; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { iW = mng_get_uint16 (pWorkrow); /* get input */ mng_put_uint16 (pRGBArow, iW); /* and put in intermediate row */ mng_put_uint16 (pRGBArow+2, iW); mng_put_uint16 (pRGBArow+4, iW); mng_put_uint16 (pRGBArow+6, 0xFFFF); pRGBArow += 8; /* next pixel */ pWorkrow += 2; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_G16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_rgb8 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iR, iG, iB; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGB8, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iR = *pWorkrow; /* get the RGB values */ iG = *(pWorkrow+1); iB = *(pWorkrow+2); /* transparent ? */ if ((iR == pBuf->iTRNSred) && (iG == pBuf->iTRNSgreen) && (iB == pBuf->iTRNSblue)) { *pRGBArow = 0; /* this pixel is transparent ! */ *(pRGBArow+1) = 0; *(pRGBArow+2) = 0; *(pRGBArow+3) = 0; } else { *pRGBArow = iR; /* copy the RGB values */ *(pRGBArow+1) = iG; *(pRGBArow+2) = iB; *(pRGBArow+3) = 0xFF; /* this one isn't transparent */ } pWorkrow += 3; /* next pixel */ pRGBArow += 4; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { *pRGBArow = *pWorkrow; /* copy the RGB bytes */ *(pRGBArow+1) = *(pWorkrow+1); *(pRGBArow+2) = *(pWorkrow+2); *(pRGBArow+3) = 0xFF; /* no alpha; so always fully opaque */ pWorkrow += 3; /* next pixel */ pRGBArow += 4; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGB8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_rgb16 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint16 iR, iG, iB; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGB16, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iR = mng_get_uint16 (pWorkrow); /* get the RGB values */ iG = mng_get_uint16 (pWorkrow+2); iB = mng_get_uint16 (pWorkrow+4); /* transparent ? */ if ((iR == pBuf->iTRNSred) && (iG == pBuf->iTRNSgreen) && (iB == pBuf->iTRNSblue)) { /* transparent then */ mng_put_uint16 (pRGBArow, 0); mng_put_uint16 (pRGBArow+2, 0); mng_put_uint16 (pRGBArow+4, 0); mng_put_uint16 (pRGBArow+6, 0); } else { /* put in intermediate row */ mng_put_uint16 (pRGBArow, iR); mng_put_uint16 (pRGBArow+2, iG); mng_put_uint16 (pRGBArow+4, iB); mng_put_uint16 (pRGBArow+6, 0xFFFF); } pWorkrow += 6; /* next pixel */ pRGBArow += 8; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { /* copy the RGB values */ mng_put_uint16 (pRGBArow, mng_get_uint16 (pWorkrow )); mng_put_uint16 (pRGBArow+2, mng_get_uint16 (pWorkrow+2)); mng_put_uint16 (pRGBArow+4, mng_get_uint16 (pWorkrow+4)); mng_put_uint16 (pRGBArow+6, 0xFFFF); pWorkrow += 6; /* next pixel */ pRGBArow += 8; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGB16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_idx1 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX1, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; iS = 7; } /* get the index */ iQ = (mng_uint8)((iB & iM) >> iS); /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ *pRGBArow = pBuf->aPLTEentries [iQ].iRed; *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; /* transparency for this index ? */ if ((mng_uint32)iQ < pBuf->iTRNScount) *(pRGBArow+3) = pBuf->aTRNSentries [iQ]; else *(pRGBArow+3) = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ iM >>= 1; iS -= 1; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0x80; iS = 7; } /* get the index */ iQ = (mng_uint8)((iB & iM) >> iS); /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ *pRGBArow = pBuf->aPLTEentries [iQ].iRed; *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; *(pRGBArow+3) = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ iM >>= 1; iS -= 1; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_idx2 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX2, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* get the index */ iQ = (mng_uint8)((iB & iM) >> iS); /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ *pRGBArow = pBuf->aPLTEentries [iQ].iRed; *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; /* transparency for this index ? */ if ((mng_uint32)iQ < pBuf->iTRNScount) *(pRGBArow+3) = pBuf->aTRNSentries [iQ]; else *(pRGBArow+3) = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ iM >>= 2; iS -= 2; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = *pWorkrow; /* get next input-byte */ pWorkrow++; iM = 0xC0; iS = 6; } /* get the index */ iQ = (mng_uint8)((iB & iM) >> iS); /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ *pRGBArow = pBuf->aPLTEentries [iQ].iRed; *(pRGBArow+1) = pBuf->aPLTEentries [iQ].iGreen; *(pRGBArow+2) = pBuf->aPLTEentries [iQ].iBlue; *(pRGBArow+3) = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ iM >>= 2; iS -= 2; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_idx4 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iB; mng_uint8 iM; mng_uint32 iS; mng_uint8 iQ; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX4, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; iM = 0; /* start at pixel 0 */ iB = 0; iS = 0; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = pWorkrow [0]; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the index */ iQ = (mng_uint8)((iB & iM) >> iS); /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; /* transparency for this index ? */ if ((mng_uint32)iQ < pBuf->iTRNScount) pRGBArow [3] = pBuf->aTRNSentries [iQ]; else pRGBArow [3] = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ iM >>= 4; iS -= 4; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { if (!iM) /* mask underflow ? */ { iB = pWorkrow [0]; /* get next input-byte */ pWorkrow++; iM = 0xF0; iS = 4; } /* get the index */ iQ = (mng_uint8)((iB & iM) >> iS); /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; pRGBArow [3] = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ iM >>= 4; iS -= 4; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_idx8 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint8 iQ; mng_imagedatap pBuf = (mng_imagedatap)pData->pStorebuf; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX8, MNG_LC_START) #endif if (!pBuf) /* no object? then use obj 0 */ pBuf = ((mng_imagep)pData->pObjzero)->pImgbuf; /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; if (pBuf->bHasTRNS) /* tRNS encountered ? */ { for (iX = 0; iX < pData->iRowsamples; iX++) { iQ = *pWorkrow; /* get input byte */ /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; /* transparency for this index ? */ if ((mng_uint32)iQ < pBuf->iTRNScount) pRGBArow [3] = pBuf->aTRNSentries [iQ]; else pRGBArow [3] = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ pWorkrow++; } pData->bIsOpaque = MNG_FALSE; /* it's not fully opaque */ } else { for (iX = 0; iX < pData->iRowsamples; iX++) { iQ = *pWorkrow; /* get input byte */ /* index valid ? */ if ((mng_uint32)iQ < pBuf->iPLTEcount) { /* put in intermediate row */ pRGBArow [0] = pBuf->aPLTEentries [iQ].iRed; pRGBArow [1] = pBuf->aPLTEentries [iQ].iGreen; pRGBArow [2] = pBuf->aPLTEentries [iQ].iBlue; pRGBArow [3] = 0xFF; } else MNG_ERROR (pData, MNG_PLTEINDEXERROR) pRGBArow += 4; /* next pixel */ pWorkrow++; } pData->bIsOpaque = MNG_TRUE; /* it's fully opaque */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_IDX8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_ga8 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_GA8, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; for (iX = 0; iX < pData->iRowsamples; iX++) { *pRGBArow = *pWorkrow; /* copy the gray value */ *(pRGBArow+1) = *pWorkrow; *(pRGBArow+2) = *pWorkrow; *(pRGBArow+3) = *(pWorkrow+1); /* copy the alpha value */ pWorkrow += 2; /* next pixel */ pRGBArow += 4; } pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_GA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_ga16 (mng_datap pData) { mng_uint8p pWorkrow; mng_uint8p pRGBArow; mng_int32 iX; mng_uint16 iW; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_GA16, MNG_LC_START) #endif /* temporary work pointers */ pWorkrow = pData->pWorkrow + pData->iPixelofs; pRGBArow = pData->pRGBArow; for (iX = 0; iX < pData->iRowsamples; iX++) { iW = mng_get_uint16 (pWorkrow); /* copy the gray value */ mng_put_uint16 (pRGBArow, iW); mng_put_uint16 (pRGBArow+2, iW); mng_put_uint16 (pRGBArow+4, iW); /* copy the alpha value */ mng_put_uint16 (pRGBArow+6, mng_get_uint16 (pWorkrow+2)); pWorkrow += 4; /* next pixel */ pRGBArow += 8; } pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_GA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_rgba8 (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGBA8, MNG_LC_START) #endif /* this is the easiest transform */ MNG_COPY (pData->pRGBArow, pData->pWorkrow + pData->iPixelofs, pData->iRowsize) pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGBA8, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode process_rgba16 (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGBA16, MNG_LC_START) #endif /* this is the easiest transform */ MNG_COPY (pData->pRGBArow, pData->pWorkrow + pData->iPixelofs, pData->iRowsize) pData->bIsOpaque = MNG_FALSE; /* it's definitely not fully opaque */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_PROCESS_RGBA16, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ /* * * */ /* * Row processing initialization routines - set up the variables needed * */ /* * to process uncompressed row-data * */ /* * * */ /* ************************************************************************** */ mng_retcode init_g1_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G1_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g1; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g1; else pData->fStorerow = (mng_fptr)store_g1; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g1; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 7; pData->iSamplediv = 3; pData->iRowsize = (pData->iRowsamples + 7) >> 3; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G1_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g1_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G1_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g1; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g1; else pData->fStorerow = (mng_fptr)store_g1; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g1; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 7; pData->iSamplediv = 3; pData->iRowsize = ((pData->iRowsamples + 7) >> 3); pData->iRowmax = ((pData->iDatawidth + 7) >> 3) + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G1_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g2_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G2_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g2; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g2; else pData->fStorerow = (mng_fptr)store_g2; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g2; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 3; pData->iSamplediv = 2; pData->iRowsize = (pData->iRowsamples + 3) >> 2; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G2_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g2_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G2_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g2; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g2; else pData->fStorerow = (mng_fptr)store_g2; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g2; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 3; pData->iSamplediv = 2; pData->iRowsize = ((pData->iRowsamples + 3) >> 2); pData->iRowmax = ((pData->iDatawidth + 3) >> 2) + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G2_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g4_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G4_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g4; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g4; else pData->fStorerow = (mng_fptr)store_g4; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g4; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 1; pData->iSamplediv = 1; pData->iRowsize = (pData->iRowsamples + 1) >> 1; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G4_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g4_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G4_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g4; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g4; else pData->fStorerow = (mng_fptr)store_g4; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g4; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 1; pData->iSamplediv = 1; pData->iRowsize = ((pData->iRowsamples + 1) >> 1); pData->iRowmax = ((pData->iDatawidth + 1) >> 1) + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G4_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g8_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G8_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g8; else pData->fStorerow = (mng_fptr)store_g8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g8; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G8_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g8_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G8_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g8; else pData->fStorerow = (mng_fptr)store_g8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g8; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples; pData->iRowmax = pData->iDatawidth + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G8_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g16_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G16_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g16; else pData->fStorerow = (mng_fptr)store_g16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g16; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 2; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 1; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 2; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G16_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_g16_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G16_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_g16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_g16; else pData->fStorerow = (mng_fptr)store_g16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g16; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 2; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 1; pData->iRowmax = (pData->iDatawidth << 1) + pData->iPixelofs; pData->iFilterbpp = 2; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_G16_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgb8_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB8_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgb8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgb8; else pData->fStorerow = (mng_fptr)store_rgb8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgb8; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 3; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples * 3; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 3; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB8_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgb8_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB8_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgb8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgb8; else pData->fStorerow = (mng_fptr)store_rgb8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgb8; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 3; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples * 3; pData->iRowmax = (pData->iDatawidth * 3) + pData->iPixelofs; pData->iFilterbpp = 3; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB8_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgb16_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB16_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgb16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgb16; else pData->fStorerow = (mng_fptr)store_rgb16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgb16; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 6; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples * 6; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 6; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB16_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgb16_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB16_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgb16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgb16; else pData->fStorerow = (mng_fptr)store_rgb16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgb16; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 6; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples * 6; pData->iRowmax = (pData->iDatawidth * 6) + pData->iPixelofs; pData->iFilterbpp = 6; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGB16_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx1_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX1_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx1; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx1; else pData->fStorerow = (mng_fptr)store_idx1; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx1; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 7; pData->iSamplediv = 3; pData->iRowsize = (pData->iRowsamples + 7) >> 3; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX1_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx1_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX1_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx1; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx1; else pData->fStorerow = (mng_fptr)store_idx1; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx1; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 7; pData->iSamplediv = 3; pData->iRowsize = (pData->iRowsamples + 7) >> 3; pData->iRowmax = ((pData->iDatawidth + 7) >> 3) + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX1_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx2_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX2_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx2; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx2; else pData->fStorerow = (mng_fptr)store_idx2; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx2; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 3; pData->iSamplediv = 2; pData->iRowsize = (pData->iRowsamples + 3) >> 2; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX2_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx2_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX2_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx2; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx2; else pData->fStorerow = (mng_fptr)store_idx2; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx2; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 3; pData->iSamplediv = 2; pData->iRowsize = (pData->iRowsamples + 3) >> 2; pData->iRowmax = ((pData->iDatawidth + 3) >> 2) + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX2_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx4_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX4_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx4; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx4; else pData->fStorerow = (mng_fptr)store_idx4; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx4; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 1; pData->iSamplediv = 1; pData->iRowsize = (pData->iRowsamples + 1) >> 1; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX4_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx4_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX4_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx4; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx4; else pData->fStorerow = (mng_fptr)store_idx4; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx4; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 1; pData->iSamplediv = 1; pData->iRowsize = (pData->iRowsamples + 1) >> 1; pData->iRowmax = ((pData->iDatawidth + 1) >> 1) + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX4_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx8_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX8_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx8; else pData->fStorerow = (mng_fptr)store_idx8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx8; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX8_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_idx8_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX8_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_idx8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_idx8; else pData->fStorerow = (mng_fptr)store_idx8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_idx8; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 1; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples; pData->iRowmax = pData->iDatawidth + pData->iPixelofs; pData->iFilterbpp = 1; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_IDX8_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_ga8_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA8_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_ga8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_ga8; else pData->fStorerow = (mng_fptr)store_ga8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_ga8; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 2; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 1; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 2; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA8_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_ga8_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA8_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_ga8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_ga8; else pData->fStorerow = (mng_fptr)store_ga8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_ga8; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 2; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 1; pData->iRowmax = (pData->iDatawidth << 1) + pData->iPixelofs; pData->iFilterbpp = 2; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA8_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_ga16_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA16_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_ga16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_ga16; else pData->fStorerow = (mng_fptr)store_ga16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_ga16; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 4; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 2; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 4; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA16_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_ga16_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA16_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_ga16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_ga16; else pData->fStorerow = (mng_fptr)store_ga16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_ga16; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 4; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 2; pData->iRowmax = (pData->iDatawidth << 2) + pData->iPixelofs; pData->iFilterbpp = 4; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_GA16_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgba8_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA8_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgba8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgba8; else pData->fStorerow = (mng_fptr)store_rgba8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgba8; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 4; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 2; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 4; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA8_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgba8_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA8_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgba8; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgba8; else pData->fStorerow = (mng_fptr)store_rgba8; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgba8; pData->iPass = 0; /* from 0..6; is 1..7 in specifications */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 4; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 2; pData->iRowmax = (pData->iDatawidth << 2) + pData->iPixelofs; pData->iFilterbpp = 4; pData->bIsRGBA16 = MNG_FALSE; /* intermediate row is 8-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA8_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgba16_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA16_NI, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgba16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgba16; else pData->fStorerow = (mng_fptr)store_rgba16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgba16; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 8; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 3; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 8; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA16_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_rgba16_i (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA16_I, MNG_LC_START) #endif if (pData->fDisplayrow) pData->fProcessrow = (mng_fptr)process_rgba16; if (pData->pStoreobj) /* store in object too ? */ { /* immediate delta ? */ if ((pData->bHasDHDR) && (pData->bDeltaimmediate)) pData->fStorerow = (mng_fptr)delta_rgba16; else pData->fStorerow = (mng_fptr)store_rgba16; } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_rgba16; pData->iPass = 0; /* from 0..6; (1..7 in specification) */ pData->iRow = interlace_row [0]; pData->iRowinc = interlace_rowskip [0]; pData->iCol = interlace_col [0]; pData->iColinc = interlace_colskip [0]; pData->iRowsamples = (pData->iDatawidth + interlace_roundoff [0]) >> interlace_divider [0]; pData->iSamplemul = 8; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 3; pData->iRowmax = (pData->iDatawidth << 3) + pData->iPixelofs; pData->iFilterbpp = 8; pData->bIsRGBA16 = MNG_TRUE; /* intermediate row is 16-bit deep */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_RGBA16_I, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ /* * * */ /* * Row processing initialization routines (JPEG) - set up the variables * */ /* * needed to process uncompressed row-data * */ /* * * */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG /* ************************************************************************** */ mng_retcode init_jpeg_a1_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A1_NI, MNG_LC_START) #endif if (pData->pStoreobj) /* store in object too ? */ { if (pData->iJHDRimgbitdepth == 8) { switch (pData->iJHDRcolortype) { case 12 : { pData->fStorerow = (mng_fptr)store_jpeg_g8_a1; break; } case 14 : { pData->fStorerow = (mng_fptr)store_jpeg_rgb8_a1; break; } } } /* TODO: bitdepth 12 & 20 */ } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g1; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 7; pData->iSamplediv = 3; pData->iRowsize = (pData->iRowsamples + 7) >> 3; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A1_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_jpeg_a2_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A2_NI, MNG_LC_START) #endif if (pData->pStoreobj) /* store in object too ? */ { if (pData->iJHDRimgbitdepth == 8) { switch (pData->iJHDRcolortype) { case 12 : { pData->fStorerow = (mng_fptr)store_jpeg_g8_a2; break; } case 14 : { pData->fStorerow = (mng_fptr)store_jpeg_rgb8_a2; break; } } } /* TODO: bitdepth 12 & 20 */ } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g2; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 3; pData->iSamplediv = 2; pData->iRowsize = (pData->iRowsamples + 3) >> 2; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A2_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_jpeg_a4_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A4_NI, MNG_LC_START) #endif if (pData->pStoreobj) /* store in object too ? */ { if (pData->iJHDRimgbitdepth == 8) { switch (pData->iJHDRcolortype) { case 12 : { pData->fStorerow = (mng_fptr)store_jpeg_g8_a4; break; } case 14 : { pData->fStorerow = (mng_fptr)store_jpeg_rgb8_a4; break; } } } /* TODO: bitdepth 12 & 20 */ } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g4; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 1; pData->iSamplediv = 1; pData->iRowsize = (pData->iRowsamples + 1) >> 1; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A4_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_jpeg_a8_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A8_NI, MNG_LC_START) #endif if (pData->pStoreobj) /* store in object too ? */ { if (pData->iJHDRimgbitdepth == 8) { switch (pData->iJHDRcolortype) { case 12 : { pData->fStorerow = (mng_fptr)store_jpeg_g8_a8; break; } case 14 : { pData->fStorerow = (mng_fptr)store_jpeg_rgb8_a8; break; } } } /* TODO: bitdepth 12 & 20 */ } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g8; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 1; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 1; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A8_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ mng_retcode init_jpeg_a16_ni (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A16_NI, MNG_LC_START) #endif if (pData->pStoreobj) /* store in object too ? */ { if (pData->iJHDRimgbitdepth == 8) { switch (pData->iJHDRcolortype) { case 12 : { pData->fStorerow = (mng_fptr)store_jpeg_g8_a16; break; } case 14 : { pData->fStorerow = (mng_fptr)store_jpeg_rgb8_a16; break; } } } /* TODO: bitdepth 12 & 20 */ } if (pData->iFilter & 0x40) /* leveling & differing ? */ pData->fDifferrow = (mng_fptr)differ_g16; pData->iPass = -1; pData->iRow = 0; pData->iRowinc = 1; pData->iCol = 0; pData->iColinc = 1; pData->iRowsamples = pData->iDatawidth; pData->iSamplemul = 2; pData->iSampleofs = 0; pData->iSamplediv = 0; pData->iRowsize = pData->iRowsamples << 1; pData->iRowmax = pData->iRowsize + pData->iPixelofs; pData->iFilterbpp = 2; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_JPEG_A16_NI, MNG_LC_END) #endif return init_rowproc (pData); } /* ************************************************************************** */ #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ /* * * */ /* * Generic row processing initialization & cleanup routines * */ /* * - initialize the buffers used by the row processing routines * */ /* * - cleanup the buffers used by the row processing routines * */ /* * * */ /* ************************************************************************** */ mng_retcode init_rowproc (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_ROWPROC, MNG_LC_START) #endif if (pData->pStoreobj) /* storage object selected ? */ { pData->pStorebuf = ((mng_imagep)pData->pStoreobj)->pImgbuf; /* and so it becomes viewable ! */ ((mng_imagep)pData->pStoreobj)->bViewable = MNG_TRUE; ((mng_imagedatap)pData->pStorebuf)->bViewable = MNG_TRUE; } /* allocate the buffers; the individual init routines have already calculated the required maximum size; except in the case of a JNG without alpha!!! */ if (pData->iRowmax) { MNG_ALLOC (pData, pData->pWorkrow, pData->iRowmax) MNG_ALLOC (pData, pData->pPrevrow, pData->iRowmax) } /* allocate an RGBA16 row for intermediate processing */ MNG_ALLOC (pData, pData->pRGBArow, (pData->iDatawidth << 3)); #ifndef MNG_NO_CMS if (pData->fDisplayrow) /* display "on-the-fly" ? */ { #if defined(MNG_FULL_CMS) /* determine color-management initialization */ mng_retcode iRetcode = init_full_cms (pData); #elif defined(MNG_GAMMA_ONLY) mng_retcode iRetcode = init_gamma_only (pData); #elif defined(MNG_APP_CMS) mng_retcode iRetcode = init_app_cms (pData); #endif if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* !MNG_NO_CMS */ #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_INIT_ROWPROC, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode next_row (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_NEXT_ROW, MNG_LC_START) #endif pData->iRow += pData->iRowinc; /* increase the row counter */ if (pData->iPass >= 0) /* interlaced ? */ { while ((pData->iPass < 7) && /* went 'outside' the image ? */ ((pData->iRow >= (mng_int32)pData->iDataheight) || (pData->iCol >= (mng_int32)pData->iDatawidth ) )) { pData->iPass++; /* next pass ! */ if (pData->iPass < 7) /* there's only 7 passes ! */ { pData->iRow = interlace_row [pData->iPass]; pData->iRowinc = interlace_rowskip [pData->iPass]; pData->iCol = interlace_col [pData->iPass]; pData->iColinc = interlace_colskip [pData->iPass]; pData->iRowsamples = (pData->iDatawidth - pData->iCol + interlace_roundoff [pData->iPass]) >> interlace_divider [pData->iPass]; if (pData->iSamplemul > 1) /* recalculate row dimension */ pData->iRowsize = pData->iRowsamples * pData->iSamplemul; else if (pData->iSamplediv > 0) pData->iRowsize = (pData->iRowsamples + pData->iSampleofs) >> pData->iSamplediv; else pData->iRowsize = pData->iRowsamples; } if ((pData->iPass < 7) && /* reset previous row to zeroes ? */ (pData->iRow < (mng_int32)pData->iDataheight) && (pData->iCol < (mng_int32)pData->iDatawidth ) ) { /* making sure the filters will work properly! */ mng_int32 iX; mng_uint8p pTemp = pData->pPrevrow; for (iX = 0; iX < pData->iRowsize; iX++) { *pTemp = 0; pTemp++; } } } } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_NEXT_ROW, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode cleanup_rowproc (mng_datap pData) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_CLEANUP_ROWPROC, MNG_LC_START) #endif #ifdef MNG_INCLUDE_LCMS /* cleanup cms profile/transform */ { mng_retcode iRetcode = mng_clear_cms (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #endif /* MNG_INCLUDE_LCMS */ if (pData->pWorkrow) /* cleanup buffer for working row */ MNG_FREE (pData, pData->pWorkrow, pData->iRowmax) if (pData->pPrevrow) /* cleanup buffer for previous row */ MNG_FREE (pData, pData->pPrevrow, pData->iRowmax) if (pData->pRGBArow) /* cleanup buffer for intermediate row */ MNG_FREE (pData, pData->pRGBArow, (pData->iDatawidth << 3)) pData->pWorkrow = 0; /* propogate uninitialized buffers */ pData->pPrevrow = 0; pData->pRGBArow = 0; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_CLEANUP_ROWPROC, MNG_LC_END) #endif return MNG_NOERROR; /* woohiii */ } /* ************************************************************************** */ /* * * */ /* * Generic row processing routines for JNG * */ /* * * */ /* ************************************************************************** */ #ifdef MNG_INCLUDE_JNG /* ************************************************************************** */ mng_retcode display_jpeg_rows (mng_datap pData) { mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_JPEG_ROWS, MNG_LC_START) #endif /* any completed rows ? */ if ((pData->iJPEGrow > pData->iJPEGdisprow) && (pData->iJPEGalpharow > pData->iJPEGdisprow) ) { mng_uint32 iX, iMax; mng_uint32 iSaverow = pData->iRow; /* save alpha decompression row-count */ /* determine the highest complete(!) row */ if (pData->iJPEGrow > pData->iJPEGalpharow) iMax = pData->iJPEGalpharow; else iMax = pData->iJPEGrow; /* display the rows */ for (iX = pData->iJPEGdisprow; iX < iMax; iX++) { pData->iRow = iX; /* make sure we all know which row to handle */ /* makeup an intermediate row from the buffer */ iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); /* color-correct it if necessary */ if ((!iRetcode) && (pData->fCorrectrow)) iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); if (!iRetcode) /* and display it */ { iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); if (!iRetcode) /* check progressive display refresh */ iRetcode = display_progressive_check (pData); } if (iRetcode) /* on error bail out */ return iRetcode; } pData->iJPEGdisprow = iMax; /* keep track of the last displayed row */ pData->iRow = iSaverow; /* restore alpha decompression row-count */ } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_DISPLAY_JPEG_ROWS, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode next_jpeg_alpharow (mng_datap pData) { mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ALPHAROW, MNG_LC_START) #endif pData->iJPEGalpharow++; /* count the row */ if (pData->fDisplayrow) /* display "on-the-fly" ? */ { /* try to display what you can */ iRetcode = display_jpeg_rows (pData); if (iRetcode) /* on error bail out */ return iRetcode; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ALPHAROW, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode next_jpeg_row (mng_datap pData) { mng_retcode iRetcode; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ROW, MNG_LC_START) #endif pData->iJPEGrow++; /* increase the row-counter */ if (pData->fDisplayrow) /* display "on-the-fly" ? */ { /* has alpha channel ? */ if ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) { /* try to display what you can */ iRetcode = display_jpeg_rows (pData); } else { /* make sure we all know which row to handle */ pData->iRow = pData->iJPEGrow - 1; /* makeup an intermediate row from the buffer */ iRetcode = ((mng_retrieverow)pData->fRetrieverow) (pData); /* color-correct it if necessary */ if ((!iRetcode) && (pData->fCorrectrow)) iRetcode = ((mng_correctrow)pData->fCorrectrow) (pData); if (!iRetcode) /* and display it */ { iRetcode = ((mng_displayrow)pData->fDisplayrow) (pData); if (!iRetcode) /* check progressive display refresh */ iRetcode = display_progressive_check (pData); } } if (iRetcode) /* on error bail out */ return iRetcode; } /* surpassed last filled row ? */ if (pData->iJPEGrow > pData->iJPEGrgbrow) pData->iJPEGrgbrow = pData->iJPEGrow; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_NEXT_JPEG_ROW, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ #endif /* MNG_INCLUDE_JNG */ /* ************************************************************************** */ mng_retcode magnify_g8_x1 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX, iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X1, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; if (iX == 0) /* first interval ? */ iM = iML; else if (iX == (iWidth - 1)) /* last interval ? */ iM = iMR; else iM = iMX; for (iS = 1; iS < iM; iS++) /* fill interval */ { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; } pTempsrc1++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_g8_x2 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X2, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 1; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = iMR; else iM = iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { /* is it same as first ? */ if (*pTempsrc1 == *pTempsrc2) { for (iS = 1; iS < iM; iS++) /* then just repeat the first */ { *pTempdst = *pTempsrc1; pTempdst++; } } else { for (iS = 1; iS < iM; iS++) /* calculate the distances */ { *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; } } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; } } } pTempsrc1++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_g8_x3 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X3, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 1; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = iMR; else iM = iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { /* is it same as first ? */ if (*pTempsrc1 == *pTempsrc2) { for (iS = 1; iS < iM; iS++) /* then just repeat the first */ { *pTempdst = *pTempsrc1; pTempdst++; } } else { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* replicate first half */ { *pTempdst = *pTempsrc1; pTempdst++; } for (iS = iH; iS < iM; iS++) /* replicate second half */ { *pTempdst = *pTempsrc2; pTempdst++; } } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; } } } pTempsrc1++; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_X3, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgb8_x1 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX, iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X1, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; if (iX == 0) /* first interval ? */ iM = iML; else if (iX == (iWidth - 1)) /* last interval ? */ iM = iMR; else iM = iMX; for (iS = 1; iS < iM; iS++) /* fill interval */ { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; } pTempsrc1 += 3; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgb8_x2 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X2, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 3; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = (mng_int32)iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = (mng_int32)iMR; else iM = (mng_int32)iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { for (iS = 1; iS < iM; iS++) { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; if (*(pTempsrc1+2) == *(pTempsrc2+2)) *pTempdst = *(pTempsrc1+2); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - (mng_int32)(*(pTempsrc1+2)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); pTempdst++; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; } } } pTempsrc1 += 3; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgb8_x3 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X3, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 3; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = (mng_int32)iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = (mng_int32)iMR; else iM = (mng_int32)iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* replicate first half */ { *pTempdst = *pTempsrc1; *(pTempdst+1) = *(pTempsrc1+1); *(pTempdst+2) = *(pTempsrc1+2); pTempdst += 3; } for (iS = iH; iS < iM; iS++) /* replicate second half */ { *pTempdst = *pTempsrc2; *(pTempdst+1) = *(pTempsrc2+1); *(pTempdst+2) = *(pTempsrc2+2); pTempdst += 3; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; } } } pTempsrc1 += 3; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_X3, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_x1 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX, iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X1, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; if (iX == 0) /* first interval ? */ iM = iML; else if (iX == (iWidth - 1)) /* last interval ? */ iM = iMR; else iM = iMX; for (iS = 1; iS < iM; iS++) /* fill interval */ { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; } pTempsrc1 += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_x2 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X2, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 2; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = iMR; else iM = iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { for (iS = 1; iS < iM; iS++) { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; } } } pTempsrc1 += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_x3 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X3, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 2; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = iMR; else iM = iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* replicate first half */ { *pTempdst = *pTempsrc1; *(pTempdst+1) = *(pTempsrc1+1); pTempdst += 2; } for (iS = iH; iS < iM; iS++) /* replicate second half */ { *pTempdst = *pTempsrc2; *(pTempdst+1) = *(pTempsrc2+1); pTempdst += 2; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; } } } pTempsrc1 += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X3, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_x4 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X4, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 2; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = iMR; else iM = iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* first half */ { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; *pTempdst = *(pTempsrc1+1); /* replicate alpha from left */ pTempdst++; } for (iS = iH; iS < iM; iS++) /* second half */ { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; *pTempdst = *(pTempsrc2+1); /* replicate alpha from right */ pTempdst++; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; } } } pTempsrc1 += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_x5 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X5, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 2; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = iMR; else iM = iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* first half */ { *pTempdst = *pTempsrc1; /* replicate gray from left */ pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1);/* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; } for (iS = iH; iS < iM; iS++) /* second half */ { *pTempdst = *pTempsrc2; /* replicate gray from right */ pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1);/* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; } } } pTempsrc1 += 2; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_X5, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_x1 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX, iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X1, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; if (iX == 0) /* first interval ? */ iM = iML; else if (iX == (iWidth - 1)) /* last interval ? */ iM = iMR; else iM = iMX; for (iS = 1; iS < iM; iS++) /* fill interval */ { *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; } pTempsrc1 += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_x2 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X2, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 4; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = (mng_int32)iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = (mng_int32)iMR; else iM = (mng_int32)iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { for (iS = 1; iS < iM; iS++) { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; if (*(pTempsrc1+2) == *(pTempsrc2+2)) *pTempdst = *(pTempsrc1+2); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - (mng_int32)(*(pTempsrc1+2)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); pTempdst++; if (*(pTempsrc1+3) == *(pTempsrc2+3)) *pTempdst = *(pTempsrc1+3); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+3)) - (mng_int32)(*(pTempsrc1+3)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+3)) ); pTempdst++; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; } } } pTempsrc1 += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_x3 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X3, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 4; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = (mng_int32)iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = (mng_int32)iMR; else iM = (mng_int32)iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* replicate first half */ { *pTempdst = *pTempsrc1; *(pTempdst+1) = *(pTempsrc1+1); *(pTempdst+2) = *(pTempsrc1+2); *(pTempdst+3) = *(pTempsrc1+3); pTempdst += 4; } for (iS = iH; iS < iM; iS++) /* replicate second half */ { *pTempdst = *pTempsrc2; *(pTempdst+1) = *(pTempsrc2+1); *(pTempdst+2) = *(pTempsrc2+2); *(pTempdst+3) = *(pTempsrc2+3); pTempdst += 4; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; } } } pTempsrc1 += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X3, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_x4 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X4, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 4; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = (mng_int32)iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = (mng_int32)iMR; else iM = (mng_int32)iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* first half */ { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; if (*(pTempsrc1+2) == *(pTempsrc2+2)) *pTempdst = *(pTempsrc1+2); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - (mng_int32)(*(pTempsrc1+2)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); pTempdst++; /* replicate alpha from left */ *pTempdst = *(pTempsrc1+3); pTempdst++; } for (iS = iH; iS < iM; iS++) /* second half */ { if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; /* just repeat the first */ else /* calculate the distance */ *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2)) + (mng_int32)(*pTempsrc1) ); pTempdst++; if (*(pTempsrc1+1) == *(pTempsrc2+1)) *pTempdst = *(pTempsrc1+1); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+1)) - (mng_int32)(*(pTempsrc1+1)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+1)) ); pTempdst++; if (*(pTempsrc1+2) == *(pTempsrc2+2)) *pTempdst = *(pTempsrc1+2); else *pTempdst = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+2)) - (mng_int32)(*(pTempsrc1+2)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+2)) ); pTempdst++; /* replicate alpha from right */ *pTempdst = *(pTempsrc2+3); pTempdst++; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; } } } pTempsrc1 += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_x5 (mng_datap pData, mng_uint16 iMX, mng_uint16 iML, mng_uint16 iMR, mng_uint32 iWidth, mng_uint8p pSrcline, mng_uint8p pDstline) { mng_uint32 iX; mng_int32 iS, iM, iH; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X5, MNG_LC_START) #endif pTempsrc1 = pSrcline; /* initialize pixel-loop */ pTempdst = pDstline; for (iX = 0; iX < iWidth; iX++) { pTempsrc2 = pTempsrc1 + 4; *pTempdst = *pTempsrc1; /* copy original source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; if (iX == 0) /* first interval ? */ { if (iWidth == 1) /* single pixel ? */ pTempsrc2 = MNG_NULL; iM = (mng_int32)iML; } else if (iX == (iWidth - 2)) /* last interval ? */ iM = (mng_int32)iMR; else iM = (mng_int32)iMX; /* fill interval ? */ if ((iX < iWidth - 1) || (iWidth == 1)) { if (pTempsrc2) /* do we have the second pixel ? */ { iH = (iM+1) / 2; /* calculate halfway point */ for (iS = 1; iS < iH; iS++) /* first half */ { *pTempdst = *pTempsrc1; /* replicate color from left */ *(pTempdst+1) = *(pTempsrc1+1); *(pTempdst+2) = *(pTempsrc1+2); if (*(pTempsrc1+3) == *(pTempsrc2+3)) *(pTempdst+3) = *(pTempsrc1+3); else *(pTempdst+3) = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+3)) - (mng_int32)(*(pTempsrc1+3)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+3)) ); pTempdst += 4; } for (iS = iH; iS < iM; iS++) /* second half */ { *pTempdst = *pTempsrc2; /* replicate color from right */ *(pTempdst+1) = *(pTempsrc2+1); *(pTempdst+2) = *(pTempsrc2+2); if (*(pTempsrc1+3) == *(pTempsrc2+3)) *(pTempdst+3) = *(pTempsrc1+3); else *(pTempdst+3) = (mng_uint8)(((2 * iS * ( (mng_int32)(*(pTempsrc2+3)) - (mng_int32)(*(pTempsrc1+3)) ) + iM) / (iM * 2)) + (mng_int32)(*(pTempsrc1+3)) ); pTempdst += 4; } } else { for (iS = 1; iS < iM; iS++) { *pTempdst = *pTempsrc1; /* repeat first source pixel */ pTempdst++; *pTempdst = *(pTempsrc1+1); pTempdst++; *pTempdst = *(pTempsrc1+2); pTempdst++; *pTempdst = *(pTempsrc1+3); pTempdst++; } } } pTempsrc1 += 4; } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_X4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_g8_y1 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y1, MNG_LC_START) #endif MNG_COPY (pDstline, pSrcline1, iWidth) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_g8_y2 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y2, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_g8_y3 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y3, MNG_LC_START) #endif if (pSrcline2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ MNG_COPY (pDstline, pSrcline1, iWidth) else MNG_COPY (pDstline, pSrcline2, iWidth) } else { /* just repeat the entire line */ MNG_COPY (pDstline, pSrcline1, iWidth) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_G8_Y3, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgb8_y1 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y1, MNG_LC_START) #endif MNG_COPY (pDstline, pSrcline1, iWidth * 3) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgb8_y2 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y2, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth * 3) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgb8_y3 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y3, MNG_LC_START) #endif if (pSrcline2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ MNG_COPY (pDstline, pSrcline1, iWidth * 3) else MNG_COPY (pDstline, pSrcline2, iWidth * 3) } else { /* just repeat the entire line */ MNG_COPY (pDstline, pSrcline1, iWidth * 3) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGB8_Y3, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_y1 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y1, MNG_LC_START) #endif MNG_COPY (pDstline, pSrcline1, iWidth << 1) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_y2 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y2, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth << 1) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_y3 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y3, MNG_LC_START) #endif if (pSrcline2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ MNG_COPY (pDstline, pSrcline1, iWidth << 1) else MNG_COPY (pDstline, pSrcline2, iWidth << 1) } else { /* just repeat the entire line */ MNG_COPY (pDstline, pSrcline1, iWidth << 1) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_y4 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y4, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2 += 2; *pTempdst++ = *pTempsrc1++; /* replicate alpha from top */ } } else { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1 += 2; pTempsrc2++; *pTempdst++ = *pTempsrc2++; /* replicate alpha from bottom */ } } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth << 1) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_ga8_y5 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y5, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ { for (iX = 0; iX < iWidth; iX++) { *pTempdst = *pTempsrc1; /* replicate gray from top */ pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } else { for (iX = 0; iX < iWidth; iX++) { *pTempdst = *pTempsrc2; /* replicate gray from bottom */ pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth << 1) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_GA8_Y5, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_y1 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y1, MNG_LC_START) #endif MNG_COPY (pDstline, pSrcline1, iWidth << 2) #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y1, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_y2 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y2, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth << 2) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_y3 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y3, MNG_LC_START) #endif if (pSrcline2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ MNG_COPY (pDstline, pSrcline1, iWidth << 2) else MNG_COPY (pDstline, pSrcline2, iWidth << 2) } else { /* just repeat the entire line */ MNG_COPY (pDstline, pSrcline1, iWidth << 2) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y2, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_y4 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y4, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2 += 2; *pTempdst++ = *pTempsrc1++; /* replicate alpha from top */ } } else { for (iX = 0; iX < iWidth; iX++) { /* calculate the distances */ if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; if (*pTempsrc1 == *pTempsrc2) *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1 += 2; pTempsrc2++; *pTempdst++ = *pTempsrc2++; /* replicate alpha from bottom */ } } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth << 2) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y4, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ mng_retcode magnify_rgba8_y5 (mng_datap pData, mng_int32 iS, mng_int32 iM, mng_uint32 iWidth, mng_uint8p pSrcline1, mng_uint8p pSrcline2, mng_uint8p pDstline) { mng_uint32 iX; mng_uint8p pTempsrc1; mng_uint8p pTempsrc2; mng_uint8p pTempdst; #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y5, MNG_LC_START) #endif pTempsrc1 = pSrcline1; /* initialize pixel-loop */ pTempsrc2 = pSrcline2; pTempdst = pDstline; if (pTempsrc2) /* do we have a second line ? */ { if (iS < (iM+1) / 2) /* top half ? */ { for (iX = 0; iX < iWidth; iX++) { *pTempdst++ = *pTempsrc1++; /* replicate color from top */ *pTempdst++ = *pTempsrc1++; *pTempdst++ = *pTempsrc1++; pTempsrc2 += 3; if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } else { for (iX = 0; iX < iWidth; iX++) { *pTempdst++ = *pTempsrc2++; /* replicate color from bottom */ *pTempdst++ = *pTempsrc2++; *pTempdst++ = *pTempsrc2++; pTempsrc1 += 3; if (*pTempsrc1 == *pTempsrc2) /* calculate the distances */ *pTempdst = *pTempsrc1; else *pTempdst = (mng_uint8)( ( (2 * iS * ( (mng_int32)(*pTempsrc2) - (mng_int32)(*pTempsrc1) ) + iM) / (iM * 2) ) + (mng_int32)(*pTempsrc1) ); pTempdst++; pTempsrc1++; pTempsrc2++; } } } else { /* just repeat the entire line */ MNG_COPY (pTempdst, pTempsrc1, iWidth << 2) } #ifdef MNG_SUPPORT_TRACE MNG_TRACE (pData, MNG_FN_MAGNIFY_RGBA8_Y5, MNG_LC_END) #endif return MNG_NOERROR; } /* ************************************************************************** */ #endif /* MNG_INCLUDE_DISPLAY_PROCS */ /* ************************************************************************** */ /* * end of file * */ /* ************************************************************************** */