diff options
Diffstat (limited to 'src/3rdparty/libmng/libmng_hlapi.c')
| -rw-r--r-- | src/3rdparty/libmng/libmng_hlapi.c | 1814 |
1 files changed, 1814 insertions, 0 deletions
diff --git a/src/3rdparty/libmng/libmng_hlapi.c b/src/3rdparty/libmng/libmng_hlapi.c new file mode 100644 index 000000000..9a897ffaf --- /dev/null +++ b/src/3rdparty/libmng/libmng_hlapi.c @@ -0,0 +1,1814 @@ +/* ************************************************************************** */ +/* * For conditions of distribution and use, * */ +/* * see copyright notice in libmng.h * */ +/* ************************************************************************** */ +/* * * */ +/* * project : libmng * */ +/* * file : libmng_hlapi.c copyright (c) 2000 G.Juyn * */ +/* * version : 1.0.2 * */ +/* * * */ +/* * purpose : high-level application API (implementation) * */ +/* * * */ +/* * author : G.Juyn * */ +/* * web : http://www.3-t.com * */ +/* * email : mailto:info@3-t.com * */ +/* * * */ +/* * comment : implementation of the high-level function interface * */ +/* * for applications. * */ +/* * * */ +/* * changes : 0.5.1 - 05/06/2000 - G.Juyn * */ +/* * - added init of iPLTEcount * */ +/* * 0.5.1 - 05/08/2000 - G.Juyn * */ +/* * - changed calling-convention definition * */ +/* * - changed status-handling of display-routines * */ +/* * - added versioning-control routines * */ +/* * - filled the write routine * */ +/* * - 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 * */ +/* * 0.5.1 - 05/13/2000 - G.Juyn * */ +/* * - added eMNGma hack (will be removed in 1.0.0 !!!) * */ +/* * - added TERM animation object pointer (easier reference) * */ +/* * 0.5.1 - 05/14/2000 - G.Juyn * */ +/* * - added cleanup of saved-data (SAVE/SEEK processing) * */ +/* * 0.5.1 - 05/16/2000 - G.Juyn * */ +/* * - moved the actual write_graphic functionality from here * */ +/* * to it's appropriate function in the mng_write module * */ +/* * * */ +/* * 0.5.2 - 05/19/2000 - G.Juyn * */ +/* * - cleaned up some code regarding mixed support * */ +/* * - added JNG support * */ +/* * 0.5.2 - 05/24/2000 - G.Juyn * */ +/* * - moved init of default zlib parms here from "mng_zlib.c" * */ +/* * - added init of default IJG parms * */ +/* * 0.5.2 - 05/29/2000 - G.Juyn * */ +/* * - fixed inconsistancy with freeing global iCCP profile * */ +/* * 0.5.2 - 05/30/2000 - G.Juyn * */ +/* * - added delta-image field initialization * */ +/* * 0.5.2 - 06/06/2000 - G.Juyn * */ +/* * - added initialization of the buffer-suspend parameter * */ +/* * * */ +/* * 0.5.3 - 06/16/2000 - G.Juyn * */ +/* * - added initialization of update-region for refresh * */ +/* * - added initialization of Needrefresh parameter * */ +/* * 0.5.3 - 06/17/2000 - G.Juyn * */ +/* * - added initialization of Deltaimmediate * */ +/* * 0.5.3 - 06/21/2000 - G.Juyn * */ +/* * - added initialization of Speed * */ +/* * - added initialization of Imagelevel * */ +/* * 0.5.3 - 06/26/2000 - G.Juyn * */ +/* * - changed userdata variable to mng_ptr * */ +/* * 0.5.3 - 06/29/2000 - G.Juyn * */ +/* * - fixed initialization routine for new mng_handle type * */ +/* * * */ +/* * 0.9.1 - 07/06/2000 - G.Juyn * */ +/* * - changed mng_display_resume to allow to be called after * */ +/* * a suspension return with MNG_NEEDMOREDATA * */ +/* * - added returncode MNG_NEEDTIMERWAIT for timer breaks * */ +/* * 0.9.1 - 07/07/2000 - G.Juyn * */ +/* * - implemented support for freeze/reset/resume & go_xxxx * */ +/* * 0.9.1 - 07/08/2000 - G.Juyn * */ +/* * - added support for improved timing * */ +/* * - added support for improved I/O-suspension * */ +/* * 0.9.1 - 07/14/2000 - G.Juyn * */ +/* * - changed EOF processing behavior * */ +/* * 0.9.1 - 07/15/2000 - G.Juyn * */ +/* * - added callbacks for SAVE/SEEK processing * */ +/* * - added variable for NEEDSECTIONWAIT breaks * */ +/* * - added variable for freeze & reset processing * */ +/* * 0.9.1 - 07/17/2000 - G.Juyn * */ +/* * - added error cleanup processing * */ +/* * - fixed support for mng_display_reset() * */ +/* * - fixed suspension-buffering for 32K+ chunks * */ +/* * * */ +/* * 0.9.2 - 07/29/2000 - G.Juyn * */ +/* * - fixed small bugs in display processing * */ +/* * 0.9.2 - 07/31/2000 - G.Juyn * */ +/* * - fixed wrapping of suspension parameters * */ +/* * 0.9.2 - 08/04/2000 - G.Juyn * */ +/* * - B111096 - fixed large-buffer read-suspension * */ +/* * 0.9.2 - 08/05/2000 - G.Juyn * */ +/* * - changed file-prefixes * */ +/* * * */ +/* * 0.9.3 - 09/07/2000 - G.Juyn * */ +/* * - added support for new filter_types * */ +/* * 0.9.3 - 09/10/2000 - G.Juyn * */ +/* * - fixed DEFI behavior * */ +/* * 0.9.3 - 10/11/2000 - G.Juyn * */ +/* * - added support for nEED * */ +/* * 0.9.3 - 10/16/2000 - G.Juyn * */ +/* * - added optional support for bKGD for PNG images * */ +/* * - raised initial maximum canvas size * */ +/* * - added support for JDAA * */ +/* * 0.9.3 - 10/17/2000 - G.Juyn * */ +/* * - added callback to process non-critical unknown chunks * */ +/* * - fixed support for delta-images during read() / display() * */ +/* * 0.9.3 - 10/18/2000 - G.Juyn * */ +/* * - added closestream() processing for mng_cleanup() * */ +/* * 0.9.3 - 10/27/2000 - G.Juyn * */ +/* * - fixed seperate read() & display() processing * */ +/* * * */ +/* * 0.9.4 - 11/20/2000 - G.Juyn * */ +/* * - fixed unwanted repetition in mng_readdisplay() * */ +/* * 0.9.4 - 11/24/2000 - G.Juyn * */ +/* * - moved restore of object 0 to libmng_display * */ +/* * * */ +/* * 1.0.1 - 02/08/2001 - G.Juyn * */ +/* * - added MEND processing callback * */ +/* * 1.0.1 - 02/13/2001 - G.Juyn * */ +/* * - fixed first FRAM_MODE=4 timing problem * */ +/* * 1.0.1 - 04/21/2001 - G.Juyn * */ +/* * - fixed bug with display_reset/display_resume (Thanks G!) * */ +/* * 1.0.1 - 04/22/2001 - G.Juyn * */ +/* * - fixed memory-leak (Thanks Gregg!) * */ +/* * 1.0.1 - 04/23/2001 - G.Juyn * */ +/* * - fixed reset_rundata to drop all objects * */ +/* * 1.0.1 - 04/25/2001 - G.Juyn * */ +/* * - moved mng_clear_cms to libmng_cms * */ +/* * * */ +/* * 1.0.2 - 06/23/2001 - G.Juyn * */ +/* * - added optimization option for MNG-video playback * */ +/* * - added processterm callback * */ +/* * 1.0.2 - 06/25/2001 - G.Juyn * */ +/* * - added option to turn off progressive refresh * */ +/* * * */ +/* ************************************************************************** */ + +#include "libmng.h" +#include "libmng_data.h" +#include "libmng_error.h" +#include "libmng_trace.h" +#ifdef __BORLANDC__ +#pragma hdrstop +#endif +#include "libmng_objects.h" +#include "libmng_object_prc.h" +#include "libmng_chunks.h" +#include "libmng_memory.h" +#include "libmng_read.h" +#include "libmng_write.h" +#include "libmng_display.h" +#include "libmng_zlib.h" +#include "libmng_jpeg.h" +#include "libmng_cms.h" +#include "libmng_pixels.h" + +#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) +#pragma option -A /* force ANSI-C */ +#endif + +/* ************************************************************************** */ +/* * * */ +/* * local routines * */ +/* * * */ +/* ************************************************************************** */ + +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) +mng_retcode mng_drop_chunks (mng_datap pData) +{ + mng_chunkp pChunk; + mng_chunkp pNext; + mng_cleanupchunk fCleanup; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DROP_CHUNKS, MNG_LC_START) +#endif + + pChunk = pData->pFirstchunk; /* and get first stored chunk (if any) */ + + while (pChunk) /* more chunks to discard ? */ + { + pNext = ((mng_chunk_headerp)pChunk)->pNext; + /* call appropriate cleanup */ + fCleanup = ((mng_chunk_headerp)pChunk)->fCleanup; + fCleanup (pData, pChunk); + + pChunk = pNext; /* neeeext */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DROP_CHUNKS, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode mng_drop_objects (mng_datap pData, + mng_bool bDropaniobj) +{ + mng_objectp pObject; + mng_objectp pNext; + mng_cleanupobject fCleanup; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_START) +#endif + + pObject = pData->pFirstimgobj; /* get first stored image-object (if any) */ + + while (pObject) /* more objects to discard ? */ + { + pNext = ((mng_object_headerp)pObject)->pNext; + /* call appropriate cleanup */ + fCleanup = ((mng_object_headerp)pObject)->fCleanup; + fCleanup (pData, pObject); + + pObject = pNext; /* neeeext */ + } + + pData->pFirstimgobj = MNG_NULL; /* clean this up!!! */ + + if (bDropaniobj) /* drop animation objects ? */ + { + pObject = pData->pFirstaniobj; /* get first stored animation-object (if any) */ + + while (pObject) /* more objects to discard ? */ + { + pNext = ((mng_object_headerp)pObject)->pNext; + /* call appropriate cleanup */ + fCleanup = ((mng_object_headerp)pObject)->fCleanup; + fCleanup (pData, pObject); + + pObject = pNext; /* neeeext */ + } + + pData->pFirstaniobj = MNG_NULL; /* clean this up!!! */ + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DROP_OBJECTS, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode mng_drop_savedata (mng_datap pData) +{ +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_START) +#endif + + if (pData->pSavedata) /* sanity check */ + { /* address it more directly */ + mng_savedatap pSave = pData->pSavedata; + + if (pSave->iGlobalProfilesize) /* cleanup the profile ? */ + MNG_FREEX (pData, pSave->pGlobalProfile, pSave->iGlobalProfilesize) + /* cleanup the save structure */ + MNG_FREE (pData, pData->pSavedata, sizeof (mng_savedata)) + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (pData, MNG_FN_DROP_SAVEDATA, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode mng_reset_rundata (mng_datap pData) +{ + drop_invalid_objects (pData); /* drop invalidly stored objects */ + mng_drop_savedata (pData); /* drop stored savedata */ + mng_reset_objzero (pData); /* reset object 0 */ + /* drop stored objects (if any) */ + mng_drop_objects (pData, MNG_FALSE); + + pData->bFramedone = MNG_FALSE; + pData->iFrameseq = 0; /* reset counters & stuff */ + pData->iLayerseq = 0; + pData->iFrametime = 0; + pData->iRequestframe = 0; + pData->iRequestlayer = 0; + pData->iRequesttime = 0; + pData->bSearching = MNG_FALSE; + + pData->iRuntime = 0; + pData->iSynctime = 0; + pData->iStarttime = 0; + pData->iEndtime = 0; + pData->bRunning = MNG_FALSE; + pData->bTimerset = MNG_FALSE; + pData->iBreakpoint = 0; + pData->bSectionwait = MNG_FALSE; + pData->bFreezing = MNG_FALSE; + pData->bResetting = MNG_FALSE; + pData->bNeedrefresh = MNG_FALSE; + + pData->iIterations = 0; + /* start of animation objects! */ + pData->pCurraniobj = MNG_NULL; + + pData->iUpdateleft = 0; /* reset region */ + pData->iUpdateright = 0; + pData->iUpdatetop = 0; + pData->iUpdatebottom = 0; + pData->iPLTEcount = 0; /* reset PLTE data */ + + pData->iDEFIobjectid = 0; /* reset DEFI data */ + pData->bDEFIhasdonotshow = MNG_FALSE; + pData->iDEFIdonotshow = 0; + pData->bDEFIhasconcrete = MNG_FALSE; + pData->iDEFIconcrete = 0; + pData->bDEFIhasloca = MNG_FALSE; + pData->iDEFIlocax = 0; + pData->iDEFIlocay = 0; + pData->bDEFIhasclip = MNG_FALSE; + pData->iDEFIclipl = 0; + pData->iDEFIclipr = 0; + pData->iDEFIclipt = 0; + pData->iDEFIclipb = 0; + + pData->iBACKred = 0; /* reset BACK data */ + pData->iBACKgreen = 0; + pData->iBACKblue = 0; + pData->iBACKmandatory = 0; + pData->iBACKimageid = 0; + pData->iBACKtile = 0; + + pData->iFRAMmode = 1; /* default global FRAM variables */ + pData->iFRAMdelay = 1; + pData->iFRAMtimeout = 0x7fffffffl; + pData->bFRAMclipping = MNG_FALSE; + pData->iFRAMclipl = 0; + pData->iFRAMclipr = 0; + pData->iFRAMclipt = 0; + pData->iFRAMclipb = 0; + + pData->iFramemode = 1; /* again for the current frame */ + pData->iFramedelay = 1; + pData->iFrametimeout = 0x7fffffffl; + pData->bFrameclipping = MNG_FALSE; + pData->iFrameclipl = 0; + pData->iFrameclipr = 0; + pData->iFrameclipt = 0; + pData->iFrameclipb = 0; + + pData->iNextdelay = 1; + + pData->iSHOWmode = 0; /* reset SHOW data */ + pData->iSHOWfromid = 0; + pData->iSHOWtoid = 0; + pData->iSHOWnextid = 0; + pData->iSHOWskip = 0; + + pData->iGlobalPLTEcount = 0; /* reset global PLTE data */ + + pData->iGlobalTRNSrawlen = 0; /* reset global tRNS data */ + + pData->iGlobalGamma = 0; /* reset global gAMA data */ + + pData->iGlobalWhitepointx = 0; /* reset global cHRM data */ + pData->iGlobalWhitepointy = 0; + pData->iGlobalPrimaryredx = 0; + pData->iGlobalPrimaryredy = 0; + pData->iGlobalPrimarygreenx = 0; + pData->iGlobalPrimarygreeny = 0; + pData->iGlobalPrimarybluex = 0; + pData->iGlobalPrimarybluey = 0; + + pData->iGlobalRendintent = 0; /* reset global sRGB data */ + + if (pData->iGlobalProfilesize) /* drop global profile (if any) */ + MNG_FREE (pData, pData->pGlobalProfile, pData->iGlobalProfilesize) + + pData->iGlobalProfilesize = 0; + + pData->iGlobalBKGDred = 0; /* reset global bKGD data */ + pData->iGlobalBKGDgreen = 0; + pData->iGlobalBKGDblue = 0; + /* reset delta-image */ + pData->pDeltaImage = MNG_NULL; + pData->iDeltaImagetype = 0; + pData->iDeltatype = 0; + pData->iDeltaBlockwidth = 0; + pData->iDeltaBlockheight = 0; + pData->iDeltaBlockx = 0; + pData->iDeltaBlocky = 0; + pData->bDeltaimmediate = MNG_FALSE; + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +void cleanup_errors (mng_datap pData) +{ + pData->iErrorcode = MNG_NOERROR; + pData->iSeverity = 0; + pData->iErrorx1 = 0; + pData->iErrorx2 = 0; + pData->zErrortext = MNG_NULL; + + return; +} + +/* ************************************************************************** */ +/* * * */ +/* * Versioning control * */ +/* * * */ +/* ************************************************************************** */ + +mng_pchar MNG_DECL mng_version_text (void) +{ + return MNG_VERSION_TEXT; +} + +/* ************************************************************************** */ + +mng_uint8 MNG_DECL mng_version_so (void) +{ + return MNG_VERSION_SO; +} + +/* ************************************************************************** */ + +mng_uint8 MNG_DECL mng_version_dll (void) +{ + return MNG_VERSION_DLL; +} + +/* ************************************************************************** */ + +mng_uint8 MNG_DECL mng_version_major (void) +{ + return MNG_VERSION_MAJOR; +} + +/* ************************************************************************** */ + +mng_uint8 MNG_DECL mng_version_minor (void) +{ + return MNG_VERSION_MINOR; +} + +/* ************************************************************************** */ + +mng_uint8 MNG_DECL mng_version_release (void) +{ + return MNG_VERSION_RELEASE; +} + +/* ************************************************************************** */ +/* * * */ +/* * HLAPI routines * */ +/* * * */ +/* ************************************************************************** */ + +mng_handle MNG_DECL mng_initialize (mng_ptr pUserdata, + mng_memalloc fMemalloc, + mng_memfree fMemfree, + mng_traceproc fTraceproc) +{ + mng_datap pData; +#ifdef MNG_SUPPORT_DISPLAY + mng_retcode iRetcode; + mng_imagep pImage; +#endif + +#ifdef MNG_INTERNAL_MEMMNGMT /* allocate the main datastruc */ + pData = (mng_datap)calloc (1, sizeof (mng_data)); +#else + pData = (mng_datap)fMemalloc (sizeof (mng_data)); +#endif + + if (!pData) + return MNG_NULL; /* error: out of memory?? */ + /* validate the structure */ + pData->iMagic = MNG_MAGIC; + /* save userdata field */ + pData->pUserdata = pUserdata; + /* remember trace callback */ + pData->fTraceproc = fTraceproc; + +#ifdef MNG_SUPPORT_TRACE + if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_INITIALIZE)) + { + MNG_FREEX (pData, pData, sizeof (mng_data)) + return MNG_NULL; + } +#endif + /* default canvas styles are 8-bit RGB */ + pData->iCanvasstyle = MNG_CANVAS_RGB8; + pData->iBkgdstyle = MNG_CANVAS_RGB8; + + pData->iBGred = 0; /* black */ + pData->iBGgreen = 0; + pData->iBGblue = 0; + + pData->bUseBKGD = MNG_TRUE; + +#ifdef MNG_FULL_CMS + pData->bIssRGB = MNG_TRUE; + pData->hProf1 = 0; /* no profiles yet */ + pData->hProf2 = 0; + pData->hProf3 = 0; + pData->hTrans = 0; +#endif + + pData->dViewgamma = 1.0; + pData->dDisplaygamma = 2.2; + pData->dDfltimggamma = 0.45455; + /* initially remember chunks */ + pData->bStorechunks = MNG_TRUE; + /* no breaks at section-borders */ + pData->bSectionbreaks = MNG_FALSE; + /* initially cache playback info */ + pData->bCacheplayback = MNG_TRUE; + /* progressive refresh for large images */ + pData->bDoProgressive = MNG_TRUE; + /* normal animation-speed ! */ + pData->iSpeed = mng_st_normal; + /* initial image limits */ + pData->iMaxwidth = 10000; + pData->iMaxheight = 10000; + +#ifdef MNG_INTERNAL_MEMMNGMT /* internal management */ + pData->fMemalloc = MNG_NULL; + pData->fMemfree = MNG_NULL; +#else /* keep callbacks */ + pData->fMemalloc = fMemalloc; + pData->fMemfree = fMemfree; +#endif + /* no value (yet) */ + pData->fOpenstream = MNG_NULL; + pData->fClosestream = MNG_NULL; + pData->fReaddata = MNG_NULL; + pData->fWritedata = MNG_NULL; + pData->fErrorproc = MNG_NULL; + pData->fProcessheader = MNG_NULL; + pData->fProcesstext = MNG_NULL; + pData->fProcesssave = MNG_NULL; + pData->fProcessseek = MNG_NULL; + pData->fProcessneed = MNG_NULL; + pData->fProcessmend = MNG_NULL; + pData->fProcessunknown = MNG_NULL; + pData->fProcessterm = MNG_NULL; + pData->fGetcanvasline = MNG_NULL; + pData->fGetbkgdline = MNG_NULL; + pData->fGetalphaline = MNG_NULL; + pData->fRefresh = MNG_NULL; + pData->fGettickcount = MNG_NULL; + pData->fSettimer = MNG_NULL; + pData->fProcessgamma = MNG_NULL; + pData->fProcesschroma = MNG_NULL; + pData->fProcesssrgb = MNG_NULL; + pData->fProcessiccp = MNG_NULL; + pData->fProcessarow = MNG_NULL; + +#if defined(MNG_SUPPORT_DISPLAY) && (defined(MNG_GAMMA_ONLY) || defined(MNG_FULL_CMS)) + pData->dLastgamma = 0; /* lookup table needs first-time calc */ +#endif + +#ifdef MNG_SUPPORT_DISPLAY /* create object 0 */ + iRetcode = create_imageobject (pData, 0, MNG_TRUE, MNG_TRUE, MNG_TRUE, + 0, 0, 0, 0, 0, 0, 0, 0, 0, MNG_FALSE, + 0, 0, 0, 0, &pImage); + + if (iRetcode) /* on error drop out */ + { + MNG_FREEX (pData, pData, sizeof (mng_data)) + return MNG_NULL; + } + + pData->pObjzero = pImage; +#endif + +#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_LCMS) + mnglcms_initlibrary (); /* init lcms particulairs */ +#endif + +#ifdef MNG_SUPPORT_READ + pData->bSuspensionmode = MNG_FALSE; + pData->iSuspendbufsize = 0; + pData->pSuspendbuf = MNG_NULL; + pData->pSuspendbufnext = MNG_NULL; + pData->iSuspendbufleft = 0; + pData->iChunklen = 0; + pData->pReadbufnext = MNG_NULL; +#endif + +#ifdef MNG_INCLUDE_ZLIB + mngzlib_initialize (pData); /* initialize zlib structures and such */ + /* default zlib compression parameters */ + pData->iZlevel = MNG_ZLIB_LEVEL; + pData->iZmethod = MNG_ZLIB_METHOD; + pData->iZwindowbits = MNG_ZLIB_WINDOWBITS; + pData->iZmemlevel = MNG_ZLIB_MEMLEVEL; + pData->iZstrategy = MNG_ZLIB_STRATEGY; + /* default maximum IDAT data size */ + pData->iMaxIDAT = MNG_MAX_IDAT_SIZE; +#endif + +#ifdef MNG_INCLUDE_JNG /* default IJG compression parameters */ + pData->eJPEGdctmethod = MNG_JPEG_DCT; + pData->iJPEGquality = MNG_JPEG_QUALITY; + pData->iJPEGsmoothing = MNG_JPEG_SMOOTHING; + pData->bJPEGcompressprogr = MNG_JPEG_PROGRESSIVE; + pData->bJPEGcompressopt = MNG_JPEG_OPTIMIZED; + /* default maximum JDAT data size */ + pData->iMaxJDAT = MNG_MAX_JDAT_SIZE; +#endif + + mng_reset ((mng_handle)pData); + +#ifdef MNG_SUPPORT_TRACE + if (mng_trace (pData, MNG_FN_INITIALIZE, MNG_LC_END)) + { + MNG_FREEX (pData, pData, sizeof (mng_data)) + return MNG_NULL; + } +#endif + + return (mng_handle)pData; /* if we get here, we're in business */ +} + +/* ************************************************************************** */ + +mng_retcode MNG_DECL mng_reset (mng_handle hHandle) +{ + mng_datap pData; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)(hHandle)); /* address main structure */ + +#ifdef MNG_SUPPORT_DISPLAY + mng_drop_savedata (pData); /* cleanup saved-data from SAVE/SEEK */ +#endif + +#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_FULL_CMS) + mng_clear_cms (pData); /* cleanup left-over cms stuff if any */ +#endif + +#ifdef MNG_INCLUDE_JNG + mngjpeg_cleanup (pData); /* cleanup jpeg stuff */ +#endif + +#ifdef MNG_INCLUDE_ZLIB + if (pData->bInflating) /* if we've been inflating */ + { +#ifdef MNG_INCLUDE_DISPLAY_PROCS + cleanup_rowproc (pData); /* cleanup row-processing, */ +#endif + mngzlib_inflatefree (pData); /* cleanup inflate! */ + } +#endif /* MNG_INCLUDE_ZLIB */ + +#ifdef MNG_SUPPORT_READ + if ((pData->bReading) && (!pData->bEOF)) + process_eof (pData); /* cleanup app streaming */ + /* cleanup default read buffers */ + MNG_FREE (pData, pData->pReadbuf, pData->iReadbufsize) + MNG_FREE (pData, pData->pLargebuf, pData->iLargebufsize) + MNG_FREE (pData, pData->pSuspendbuf, pData->iSuspendbufsize) +#endif + +#ifdef MNG_SUPPORT_WRITE /* cleanup default write buffer */ + MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize) +#endif + +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) + mng_drop_chunks (pData); /* drop stored chunks (if any) */ +#endif + +#ifdef MNG_SUPPORT_DISPLAY + mng_drop_objects (pData, MNG_TRUE); /* drop stored objects (if any) */ + + if (pData->iGlobalProfilesize) /* drop global profile (if any) */ + MNG_FREEX (pData, pData->pGlobalProfile, pData->iGlobalProfilesize) +#endif + + pData->eSigtype = mng_it_unknown; + pData->eImagetype = mng_it_unknown; + pData->iWidth = 0; /* these are unknown yet */ + pData->iHeight = 0; + pData->iTicks = 0; + pData->iLayercount = 0; + pData->iFramecount = 0; + pData->iPlaytime = 0; + pData->iSimplicity = 0; + pData->iAlphadepth = 16; /* assume the worst! */ + + pData->iImagelevel = 0; /* no image encountered */ + + pData->iMagnify = 0; /* 1-to-1 display */ + pData->iOffsetx = 0; /* no offsets */ + pData->iOffsety = 0; + pData->iCanvaswidth = 0; /* let the app decide during processheader */ + pData->iCanvasheight = 0; + /* so far, so good */ + pData->iErrorcode = MNG_NOERROR; + pData->iSeverity = 0; + pData->iErrorx1 = 0; + pData->iErrorx2 = 0; + pData->zErrortext = MNG_NULL; + +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) + /* let's assume the best scenario */ + pData->bPreDraft48 = MNG_FALSE; + /* the unknown chunk */ + pData->iChunkname = MNG_UINT_HUH; + pData->iChunkseq = 0; + pData->pFirstchunk = MNG_NULL; + pData->pLastchunk = MNG_NULL; + /* nothing processed yet */ + pData->bHasheader = MNG_FALSE; + pData->bHasMHDR = MNG_FALSE; + pData->bHasIHDR = MNG_FALSE; + pData->bHasBASI = MNG_FALSE; + pData->bHasDHDR = MNG_FALSE; +#ifdef MNG_INCLUDE_JNG + pData->bHasJHDR = MNG_FALSE; + pData->bHasJSEP = MNG_FALSE; + pData->bHasJDAA = MNG_FALSE; + pData->bHasJDAT = MNG_FALSE; +#endif + pData->bHasPLTE = MNG_FALSE; + pData->bHasTRNS = MNG_FALSE; + pData->bHasGAMA = MNG_FALSE; + pData->bHasCHRM = MNG_FALSE; + pData->bHasSRGB = MNG_FALSE; + pData->bHasICCP = MNG_FALSE; + pData->bHasBKGD = MNG_FALSE; + pData->bHasIDAT = MNG_FALSE; + + pData->bHasSAVE = MNG_FALSE; + pData->bHasBACK = MNG_FALSE; + pData->bHasFRAM = MNG_FALSE; + pData->bHasTERM = MNG_FALSE; + pData->bHasLOOP = MNG_FALSE; + /* there's no global stuff yet either */ + pData->bHasglobalPLTE = MNG_FALSE; + pData->bHasglobalTRNS = MNG_FALSE; + pData->bHasglobalGAMA = MNG_FALSE; + pData->bHasglobalCHRM = MNG_FALSE; + pData->bHasglobalSRGB = MNG_FALSE; + pData->bHasglobalICCP = MNG_FALSE; + + pData->iDatawidth = 0; /* no IHDR/BASI/DHDR done yet */ + pData->iDataheight = 0; + pData->iBitdepth = 0; + pData->iColortype = 0; + pData->iCompression = 0; + pData->iFilter = 0; + pData->iInterlace = 0; + +#ifdef MNG_INCLUDE_JNG + pData->iJHDRcolortype = 0; /* no JHDR data */ + pData->iJHDRimgbitdepth = 0; + pData->iJHDRimgcompression = 0; + pData->iJHDRimginterlace = 0; + pData->iJHDRalphabitdepth = 0; + pData->iJHDRalphacompression = 0; + pData->iJHDRalphafilter = 0; + pData->iJHDRalphainterlace = 0; +#endif + +#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */ + +#ifdef MNG_SUPPORT_READ /* no reading done */ + pData->bReading = MNG_FALSE; + pData->bHavesig = MNG_FALSE; + pData->bEOF = MNG_FALSE; + pData->iReadbufsize = 0; + pData->pReadbuf = MNG_NULL; + + pData->iLargebufsize = 0; + pData->pLargebuf = MNG_NULL; + + pData->iSuspendtime = 0; + pData->bSuspended = MNG_FALSE; + pData->iSuspendpoint = 0; + + pData->pSuspendbufnext = pData->pSuspendbuf; + pData->iSuspendbufleft = 0; +#endif /* MNG_SUPPORT_READ */ + +#ifdef MNG_SUPPORT_WRITE /* no creating/writing done */ + pData->bCreating = MNG_FALSE; + pData->bWriting = MNG_FALSE; + pData->iFirstchunkadded = 0; + pData->iWritebufsize = 0; + pData->pWritebuf = MNG_NULL; +#endif /* MNG_SUPPORT_WRITE */ + +#ifdef MNG_SUPPORT_DISPLAY /* done nuttin' yet */ + pData->bDisplaying = MNG_FALSE; + pData->iFrameseq = 0; + pData->iLayerseq = 0; + pData->iFrametime = 0; + + pData->iRequestframe = 0; + pData->iRequestlayer = 0; + pData->iRequesttime = 0; + pData->bSearching = MNG_FALSE; + + pData->bRestorebkgd = MNG_FALSE; + + pData->iRuntime = 0; + pData->iSynctime = 0; + pData->iStarttime = 0; + pData->iEndtime = 0; + pData->bRunning = MNG_FALSE; + pData->bTimerset = MNG_FALSE; + pData->iBreakpoint = 0; + pData->bSectionwait = MNG_FALSE; + pData->bFreezing = MNG_FALSE; + pData->bResetting = MNG_FALSE; + pData->bNeedrefresh = MNG_FALSE; + /* these don't exist yet */ + pData->pCurrentobj = MNG_NULL; + pData->pCurraniobj = MNG_NULL; + pData->pTermaniobj = MNG_NULL; + pData->pLastclone = MNG_NULL; + pData->pStoreobj = MNG_NULL; + pData->pStorebuf = MNG_NULL; + pData->pRetrieveobj = MNG_NULL; + /* no saved data ! */ + pData->pSavedata = MNG_NULL; + /* TODO: remove in 1.0.0 !!! */ + pData->bEMNGMAhack = MNG_FALSE; + + pData->iUpdateleft = 0; /* no region updated yet */ + pData->iUpdateright = 0; + pData->iUpdatetop = 0; + pData->iUpdatebottom = 0; + + pData->iPass = -1; /* interlacing stuff and temp buffers */ + pData->iRow = 0; + pData->iRowinc = 1; + pData->iCol = 0; + pData->iColinc = 1; + pData->iRowsamples = 0; + pData->iSamplemul = 0; + pData->iSampleofs = 0; + pData->iSamplediv = 0; + pData->iRowsize = 0; + pData->iRowmax = 0; + pData->iFilterofs = 0; + pData->iPixelofs = 1; + pData->iLevel0 = 0; + pData->iLevel1 = 0; + pData->iLevel2 = 0; + pData->iLevel3 = 0; + pData->pWorkrow = MNG_NULL; + pData->pPrevrow = MNG_NULL; + pData->pRGBArow = 0; + pData->bIsRGBA16 = MNG_TRUE; + pData->bIsOpaque = MNG_TRUE; + pData->iFilterbpp = 1; + + pData->iSourcel = 0; /* always initialized just before */ + pData->iSourcer = 0; /* compositing the next layer */ + pData->iSourcet = 0; + pData->iSourceb = 0; + pData->iDestl = 0; + pData->iDestr = 0; + pData->iDestt = 0; + pData->iDestb = 0; + /* lists are empty */ + pData->pFirstimgobj = MNG_NULL; + pData->pLastimgobj = MNG_NULL; + pData->pFirstaniobj = MNG_NULL; + pData->pLastaniobj = MNG_NULL; + /* no processing callbacks */ + pData->fDisplayrow = MNG_NULL; + pData->fRestbkgdrow = MNG_NULL; + pData->fCorrectrow = MNG_NULL; + pData->fRetrieverow = MNG_NULL; + pData->fStorerow = MNG_NULL; + pData->fProcessrow = MNG_NULL; + pData->fDifferrow = MNG_NULL; + pData->fInitrowproc = MNG_NULL; + + pData->iPLTEcount = 0; /* no PLTE data */ + + pData->iDEFIobjectid = 0; /* no DEFI data */ + pData->bDEFIhasdonotshow = MNG_FALSE; + pData->iDEFIdonotshow = 0; + pData->bDEFIhasconcrete = MNG_FALSE; + pData->iDEFIconcrete = 0; + pData->bDEFIhasloca = MNG_FALSE; + pData->iDEFIlocax = 0; + pData->iDEFIlocay = 0; + pData->bDEFIhasclip = MNG_FALSE; + pData->iDEFIclipl = 0; + pData->iDEFIclipr = 0; + pData->iDEFIclipt = 0; + pData->iDEFIclipb = 0; + + pData->iBACKred = 0; /* no BACK data */ + pData->iBACKgreen = 0; + pData->iBACKblue = 0; + pData->iBACKmandatory = 0; + pData->iBACKimageid = 0; + pData->iBACKtile = 0; + + pData->iFRAMmode = 1; /* default global FRAM variables */ + pData->iFRAMdelay = 1; + pData->iFRAMtimeout = 0x7fffffffl; + pData->bFRAMclipping = MNG_FALSE; + pData->iFRAMclipl = 0; + pData->iFRAMclipr = 0; + pData->iFRAMclipt = 0; + pData->iFRAMclipb = 0; + + pData->iFramemode = 1; /* again for the current frame */ + pData->iFramedelay = 1; + pData->iFrametimeout = 0x7fffffffl; + pData->bFrameclipping = MNG_FALSE; + pData->iFrameclipl = 0; + pData->iFrameclipr = 0; + pData->iFrameclipt = 0; + pData->iFrameclipb = 0; + + pData->iNextdelay = 1; + + pData->iSHOWmode = 0; /* no SHOW data */ + pData->iSHOWfromid = 0; + pData->iSHOWtoid = 0; + pData->iSHOWnextid = 0; + pData->iSHOWskip = 0; + + pData->iGlobalPLTEcount = 0; /* no global PLTE data */ + + pData->iGlobalTRNSrawlen = 0; /* no global tRNS data */ + + pData->iGlobalGamma = 0; /* no global gAMA data */ + + pData->iGlobalWhitepointx = 0; /* no global cHRM data */ + pData->iGlobalWhitepointy = 0; + pData->iGlobalPrimaryredx = 0; + pData->iGlobalPrimaryredy = 0; + pData->iGlobalPrimarygreenx = 0; + pData->iGlobalPrimarygreeny = 0; + pData->iGlobalPrimarybluex = 0; + pData->iGlobalPrimarybluey = 0; + + pData->iGlobalRendintent = 0; /* no global sRGB data */ + + pData->iGlobalProfilesize = 0; /* no global iCCP data */ + pData->pGlobalProfile = MNG_NULL; + + pData->iGlobalBKGDred = 0; /* no global bKGD data */ + pData->iGlobalBKGDgreen = 0; + pData->iGlobalBKGDblue = 0; + /* no delta-image */ + pData->pDeltaImage = MNG_NULL; + pData->iDeltaImagetype = 0; + pData->iDeltatype = 0; + pData->iDeltaBlockwidth = 0; + pData->iDeltaBlockheight = 0; + pData->iDeltaBlockx = 0; + pData->iDeltaBlocky = 0; + pData->bDeltaimmediate = MNG_FALSE; +#endif + +#ifdef MNG_INCLUDE_ZLIB + pData->bInflating = 0; /* no inflating or deflating */ + pData->bDeflating = 0; /* going on at the moment */ +#endif + +#ifdef MNG_SUPPORT_DISPLAY /* reset object 0 */ + mng_reset_objzero (pData); +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_RESET, MNG_LC_END) +#endif + + return MNG_NOERROR; +} + +/* ************************************************************************** */ + +mng_retcode MNG_DECL mng_cleanup (mng_handle* hHandle) +{ + mng_datap pData; /* local vars */ +#ifndef MNG_INTERNAL_MEMMNGMT + mng_memfree fFree; +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (*hHandle) /* check validity handle */ + pData = ((mng_datap)(*hHandle)); /* and address main structure */ + + mng_reset (*hHandle); /* do an implicit reset to cleanup most stuff */ + +#ifdef MNG_SUPPORT_DISPLAY /* drop object 0 */ + free_imageobject (pData, (mng_imagep)pData->pObjzero); +#endif + +#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_INCLUDE_LCMS) + if (pData->hProf2) /* output profile defined ? */ + mnglcms_freeprofile (pData->hProf2); + + if (pData->hProf3) /* sRGB profile defined ? */ + mnglcms_freeprofile (pData->hProf3); +#endif /* MNG_SUPPORT_DISPLAY && MNG_INCLUDE_LCMS */ + +#ifdef MNG_INCLUDE_ZLIB + mngzlib_cleanup (pData); /* cleanup zlib stuff */ +#endif + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)*hHandle), MNG_FN_CLEANUP, MNG_LC_CLEANUP) +#endif + + pData->iMagic = 0; /* invalidate the actual memory */ + +#ifdef MNG_INTERNAL_MEMMNGMT + free ((void *)*hHandle); /* cleanup the data-structure */ +#else + fFree = ((mng_datap)*hHandle)->fMemfree; + fFree ((mng_ptr)*hHandle, sizeof (mng_data)); +#endif + + *hHandle = 0; /* wipe pointer to inhibit future use */ + + return MNG_NOERROR; /* and we're done */ +} + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_READ +mng_retcode MNG_DECL mng_read (mng_handle hHandle) +{ + mng_datap pData; /* local vars */ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + +#ifndef MNG_INTERNAL_MEMMNGMT + MNG_VALIDCB (hHandle, fMemalloc) + MNG_VALIDCB (hHandle, fMemfree) +#endif + + MNG_VALIDCB (hHandle, fOpenstream) + MNG_VALIDCB (hHandle, fClosestream) + MNG_VALIDCB (hHandle, fReaddata) + +#ifdef MNG_SUPPORT_DISPLAY /* valid at this point ? */ + if ((pData->bReading) || (pData->bDisplaying)) +#else + if (pData->bReading) +#endif + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + +#ifdef MNG_SUPPORT_WRITE + if ((pData->bWriting) || (pData->bCreating)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) +#endif + + if (!pData->bCacheplayback) /* must store playback info to work!! */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->bReading = MNG_TRUE; /* read only! */ + + if (!pData->fOpenstream (hHandle)) /* open it and start reading */ + iRetcode = MNG_APPIOERROR; + else + iRetcode = read_graphic (pData); + + if (pData->bEOF) /* already at EOF ? */ + { + pData->bReading = MNG_FALSE; /* then we're no longer reading */ + +#ifdef MNG_SUPPORT_DISPLAY + mng_reset_rundata (pData); /* reset rundata */ +#endif + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bSuspended) /* read suspension ? */ + { + iRetcode = MNG_NEEDMOREDATA; + pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ, MNG_LC_END) +#endif + + return iRetcode; +} +#endif /* MNG_SUPPORT_READ */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_READ +mng_retcode MNG_DECL mng_read_resume (mng_handle hHandle) +{ + mng_datap pData; /* local vars */ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + /* can we expect this call ? */ + if ((!pData->bReading) || (!pData->bSuspended)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->bSuspended = MNG_FALSE; /* reset the flag */ + +#ifdef MNG_SUPPORT_DISPLAY /* re-synchronize ? */ + if ((pData->bDisplaying) && (pData->bRunning)) + pData->iSynctime = pData->iSynctime - pData->iSuspendtime + + pData->fGettickcount (hHandle); +#endif + + iRetcode = read_graphic (pData); /* continue reading now */ + + if (pData->bEOF) /* at EOF ? */ + { + pData->bReading = MNG_FALSE; /* then we're no longer reading */ + +#ifdef MNG_SUPPORT_DISPLAY + mng_reset_rundata (pData); /* reset rundata */ +#endif + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bSuspended) /* read suspension ? */ + { + iRetcode = MNG_NEEDMOREDATA; + pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData); + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_READ_RESUME, MNG_LC_END) +#endif + + return iRetcode; +} +#endif /* MNG_SUPPORT_READ */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_WRITE +mng_retcode MNG_DECL mng_write (mng_handle hHandle) +{ + mng_datap pData; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + +#ifndef MNG_INTERNAL_MEMMNGMT + MNG_VALIDCB (hHandle, fMemalloc) + MNG_VALIDCB (hHandle, fMemfree) +#endif + + MNG_VALIDCB (hHandle, fOpenstream) + MNG_VALIDCB (hHandle, fClosestream) + MNG_VALIDCB (hHandle, fWritedata) + +#ifdef MNG_SUPPORT_READ + if (pData->bReading) /* valid at this point ? */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) +#endif + + if (pData->bCreating) /* can't write while it's still being made! */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + iRetcode = write_graphic (pData); /* do the write */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_WRITE, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_WRITE */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_WRITE +mng_retcode MNG_DECL mng_create (mng_handle hHandle) +{ + mng_datap pData; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + +#ifndef MNG_INTERNAL_MEMMNGMT + MNG_VALIDCB (hHandle, fMemalloc) + MNG_VALIDCB (hHandle, fMemfree) +#endif + +#ifdef MNG_SUPPORT_READ + if (pData->bReading) /* valid at this point ? */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) +#endif + + if ((pData->bWriting) || (pData->bCreating)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + iRetcode = mng_reset (hHandle); /* clear any previous stuff */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + + pData->bCreating = MNG_TRUE; /* indicate we're creating a new file */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_CREATE, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_WRITE */ + +/* ************************************************************************** */ + +#if defined(MNG_SUPPORT_DISPLAY) && defined(MNG_SUPPORT_READ) +mng_retcode MNG_DECL mng_readdisplay (mng_handle hHandle) +{ + mng_datap pData; /* local vars */ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + +#ifndef MNG_INTERNAL_MEMMNGMT + MNG_VALIDCB (hHandle, fMemalloc) + MNG_VALIDCB (hHandle, fMemfree) +#endif + + MNG_VALIDCB (hHandle, fReaddata) + MNG_VALIDCB (hHandle, fGetcanvasline) + MNG_VALIDCB (hHandle, fRefresh) + MNG_VALIDCB (hHandle, fGettickcount) + MNG_VALIDCB (hHandle, fSettimer) + /* valid at this point ? */ + if ((pData->bReading) || (pData->bDisplaying)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + +#ifdef MNG_SUPPORT_WRITE + if ((pData->bWriting) || (pData->bCreating)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) +#endif + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->bReading = MNG_TRUE; /* read & display! */ + pData->bDisplaying = MNG_TRUE; + pData->bRunning = MNG_TRUE; + pData->iFrameseq = 0; + pData->iLayerseq = 0; + pData->iFrametime = 0; + pData->iRequestframe = 0; + pData->iRequestlayer = 0; + pData->iRequesttime = 0; + pData->bSearching = MNG_FALSE; + pData->iRuntime = 0; + pData->iSynctime = pData->fGettickcount (hHandle); + pData->iSuspendtime = 0; + pData->iStarttime = pData->iSynctime; + pData->iEndtime = 0; + + if (!pData->fOpenstream (hHandle)) /* open it and start reading */ + iRetcode = MNG_APPIOERROR; + else + iRetcode = read_graphic (pData); + + if (pData->bEOF) /* already at EOF ? */ + { + pData->bReading = MNG_FALSE; /* then we're no longer reading */ + drop_invalid_objects (pData); /* drop invalidly stored objects */ + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bSuspended) /* read suspension ? */ + { + iRetcode = MNG_NEEDMOREDATA; + pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData); + } + else + if (pData->bTimerset) /* indicate timer break ? */ + iRetcode = MNG_NEEDTIMERWAIT; + else + if (pData->bSectionwait) /* indicate section break ? */ + iRetcode = MNG_NEEDSECTIONWAIT; + else + pData->bRunning = MNG_FALSE; /* no breaks = end of run */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_READDISPLAY, MNG_LC_END) +#endif + + return iRetcode; +} +#endif /* MNG_SUPPORT_DISPLAY && MNG_SUPPORT_READ */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display (mng_handle hHandle) +{ + mng_datap pData; /* local vars */ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle and callbacks */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + +#ifndef MNG_INTERNAL_MEMMNGMT + MNG_VALIDCB (hHandle, fMemalloc) + MNG_VALIDCB (hHandle, fMemfree) +#endif + + MNG_VALIDCB (hHandle, fGetcanvasline) + MNG_VALIDCB (hHandle, fRefresh) + MNG_VALIDCB (hHandle, fGettickcount) + MNG_VALIDCB (hHandle, fSettimer) + + if (pData->bDisplaying) /* valid at this point ? */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + +#ifdef MNG_SUPPORT_READ + if (pData->bReading) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) +#endif + +#ifdef MNG_SUPPORT_WRITE + if ((pData->bWriting) || (pData->bCreating)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) +#endif + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->bDisplaying = MNG_TRUE; /* display! */ + pData->bRunning = MNG_TRUE; + pData->iFrameseq = 0; + pData->iLayerseq = 0; + pData->iFrametime = 0; + pData->iRequestframe = 0; + pData->iRequestlayer = 0; + pData->iRequesttime = 0; + pData->bSearching = MNG_FALSE; + pData->iRuntime = 0; + pData->iSynctime = pData->fGettickcount (hHandle); +#ifdef MNG_SUPPORT_READ + pData->iSuspendtime = 0; +#endif + pData->iStarttime = pData->iSynctime; + pData->iEndtime = 0; + pData->pCurraniobj = pData->pFirstaniobj; + + iRetcode = process_display (pData); /* go do it */ + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bTimerset) /* indicate timer break ? */ + iRetcode = MNG_NEEDTIMERWAIT; + else + pData->bRunning = MNG_FALSE; /* no breaks = end of run */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY, MNG_LC_END) +#endif + + return iRetcode; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display_resume (mng_handle hHandle) +{ + mng_datap pData; /* local vars */ + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + + if (!pData->bDisplaying) /* can we expect this call ? */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + if (pData->bRunning) /* was it running ? */ + { /* are we expecting this call ? */ + if ((pData->bTimerset) || (pData->bSuspended) || (pData->bSectionwait)) + { + pData->bTimerset = MNG_FALSE; /* reset the flags */ + pData->bSectionwait = MNG_FALSE; + +#ifdef MNG_SUPPORT_READ + if (pData->bReading) /* set during read&display ? */ + { + if (pData->bSuspended) /* calculate proper synchronization */ + pData->iSynctime = pData->iSynctime - pData->iSuspendtime + + pData->fGettickcount (hHandle); + else + pData->iSynctime = pData->fGettickcount (hHandle); + + pData->bSuspended = MNG_FALSE; /* now reset this flag */ + /* and continue reading */ + iRetcode = read_graphic (pData); + + if (pData->bEOF) /* already at EOF ? */ + { + pData->bReading = MNG_FALSE; /* then we're no longer reading */ + /* drop invalidly stored objects */ + drop_invalid_objects (pData); + } + } + else +#endif /* MNG_SUPPORT_READ */ + { /* synchronize timing */ + pData->iSynctime = pData->fGettickcount (hHandle); + /* resume display processing */ + iRetcode = process_display (pData); + } + } + else + { + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + } + } + else + { /* synchronize timing */ + pData->iSynctime = pData->fGettickcount (hHandle); + pData->bRunning = MNG_TRUE; /* it's restarted again ! */ + /* resume display processing */ + iRetcode = process_display (pData); + } + + if (iRetcode) /* on error bail out */ + return iRetcode; + + if (pData->bSuspended) /* read suspension ? */ + { + iRetcode = MNG_NEEDMOREDATA; + pData->iSuspendtime = pData->fGettickcount ((mng_handle)pData); + } + else + if (pData->bTimerset) /* indicate timer break ? */ + iRetcode = MNG_NEEDTIMERWAIT; + else + if (pData->bSectionwait) /* indicate section break ? */ + iRetcode = MNG_NEEDSECTIONWAIT; + else + { /* no breaks = end of run */ + pData->bRunning = MNG_FALSE; + + if (pData->bFreezing) /* trying to freeze ? */ + { /* then we're there ! */ + pData->bFreezing = MNG_FALSE; + } + + if (pData->bResetting) /* trying to reset as well ? */ + { /* full stop!!! */ + pData->bDisplaying = MNG_FALSE; + + iRetcode = mng_reset_rundata (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESUME, MNG_LC_END) +#endif + + return iRetcode; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display_freeze (mng_handle hHandle) +{ + mng_datap pData; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + /* can we expect this call ? */ + if ((!pData->bDisplaying) || (pData->bReading)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + if (pData->bRunning) /* is it running ? */ + { + mng_retcode iRetcode; + + pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */ + /* continue "normal" processing */ + iRetcode = mng_display_resume (hHandle); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_FREEZE, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display_reset (mng_handle hHandle) +{ + mng_datap pData; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + /* can we expect this call ? */ + if ((!pData->bDisplaying) || (pData->bReading)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + if (!pData->bCacheplayback) /* must store playback info to work!! */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + cleanup_errors (pData); /* cleanup previous errors */ + + if (pData->bRunning) /* is it running ? */ + { + pData->bFreezing = MNG_TRUE; /* indicate we need to freeze */ + pData->bResetting = MNG_TRUE; /* indicate we're about to reset too */ + /* continue normal processing ? */ + iRetcode = mng_display_resume (hHandle); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + else + { /* full stop!!! */ + pData->bDisplaying = MNG_FALSE; + + iRetcode = mng_reset_rundata (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + } + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_RESET, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display_goframe (mng_handle hHandle, + mng_uint32 iFramenr) +{ + mng_datap pData; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + + if (pData->eImagetype != mng_it_mng) /* is it an animation ? */ + MNG_ERROR (pData, MNG_NOTANANIMATION); + /* can we expect this call ? */ + if ((!pData->bDisplaying) || (pData->bRunning)) + MNG_ERROR ((mng_datap)hHandle, MNG_FUNCTIONINVALID) + + if (!pData->bCacheplayback) /* must store playback info to work!! */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + if (iFramenr > pData->iFramecount) /* is the parameter within bounds ? */ + MNG_ERROR (pData, MNG_FRAMENRTOOHIGH); + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->iRequestframe = iFramenr; /* go find the requested frame then */ + iRetcode = process_display (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOFRAME, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display_golayer (mng_handle hHandle, + mng_uint32 iLayernr) +{ + mng_datap pData; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + + if (pData->eImagetype != mng_it_mng) /* is it an animation ? */ + MNG_ERROR (pData, MNG_NOTANANIMATION) + /* can we expect this call ? */ + if ((!pData->bDisplaying) || (pData->bRunning)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + if (!pData->bCacheplayback) /* must store playback info to work!! */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + if (iLayernr > pData->iLayercount) /* is the parameter within bounds ? */ + MNG_ERROR (pData, MNG_LAYERNRTOOHIGH) + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->iRequestlayer = iLayernr; /* go find the requested layer then */ + iRetcode = process_display (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOLAYER, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +#ifdef MNG_SUPPORT_DISPLAY +mng_retcode MNG_DECL mng_display_gotime (mng_handle hHandle, + mng_uint32 iPlaytime) +{ + mng_datap pData; + mng_retcode iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + + if (pData->eImagetype != mng_it_mng) /* is it an animation ? */ + MNG_ERROR (pData, MNG_NOTANANIMATION) + /* can we expect this call ? */ + if ((!pData->bDisplaying) || (pData->bRunning)) + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + if (!pData->bCacheplayback) /* must store playback info to work!! */ + MNG_ERROR (pData, MNG_FUNCTIONINVALID) + + if (iPlaytime > pData->iPlaytime) /* is the parameter within bounds ? */ + MNG_ERROR (pData, MNG_PLAYTIMETOOHIGH) + + cleanup_errors (pData); /* cleanup previous errors */ + + pData->iRequesttime = iPlaytime; /* go find the requested playtime then */ + iRetcode = process_display (pData); + + if (iRetcode) /* on error bail out */ + return iRetcode; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_DISPLAY_GOTIME, MNG_LC_END) +#endif + + return MNG_NOERROR; +} +#endif /* MNG_SUPPORT_DISPLAY */ + +/* ************************************************************************** */ + +mng_retcode MNG_DECL mng_getlasterror (mng_handle hHandle, + mng_int8* iSeverity, + mng_chunkid* iChunkname, + mng_uint32* iChunkseq, + mng_int32* iExtra1, + mng_int32* iExtra2, + mng_pchar* zErrortext) +{ + mng_datap pData; /* local vars */ + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_START) +#endif + + MNG_VALIDHANDLE (hHandle) /* check validity handle */ + pData = ((mng_datap)hHandle); /* and make it addressable */ + + *iSeverity = pData->iSeverity; /* return the appropriate fields */ + +#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE) + *iChunkname = pData->iChunkname; + *iChunkseq = pData->iChunkseq; +#else + *iChunkname = MNG_UINT_HUH; + *iChunkseq = 0; +#endif + + *iExtra1 = pData->iErrorx1; + *iExtra2 = pData->iErrorx2; + *zErrortext = pData->zErrortext; + +#ifdef MNG_SUPPORT_TRACE + MNG_TRACE (((mng_datap)hHandle), MNG_FN_GETLASTERROR, MNG_LC_END) +#endif + + return pData->iErrorcode; /* and the errorcode */ +} + +/* ************************************************************************** */ +/* * end of file * */ +/* ************************************************************************** */ + |