diff options
Diffstat (limited to 'krfb/libvncserver/tableinitcmtemplate.c')
-rw-r--r-- | krfb/libvncserver/tableinitcmtemplate.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/krfb/libvncserver/tableinitcmtemplate.c b/krfb/libvncserver/tableinitcmtemplate.c new file mode 100644 index 00000000..2d10ea57 --- /dev/null +++ b/krfb/libvncserver/tableinitcmtemplate.c @@ -0,0 +1,84 @@ +/* + * tableinitcmtemplate.c - template for initialising lookup tables for + * translation from a colour map to true colour. + * + * This file shouldn't be compiled. It is included multiple times by + * translate.c, each time with a different definition of the macro OUT. + * For each value of OUT, this file defines a function which allocates an + * appropriately sized lookup table and initialises it. + * + * I know this code isn't nice to read because of all the macros, but + * efficiency is important here. + */ + +/* + * OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>. + * Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge. + * All Rights Reserved. + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This software is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, + * USA. + */ + +#if !defined(OUT) +#error "This file shouldn't be compiled." +#error "It is included as part of translate.c" +#endif + +#define OUT_T CONCAT2E(CARD,OUT) +#define SwapOUT(x) CONCAT2E(Swap,OUT(x)) +#define rfbInitColourMapSingleTableOUT \ + CONCAT2E(rfbInitColourMapSingleTable,OUT) + +static void +rfbInitColourMapSingleTableOUT(char **table, rfbPixelFormat *in, + rfbPixelFormat *out,rfbColourMap* colourMap) +{ + CARD32 i, r, g, b; + OUT_T *t; + CARD32 nEntries = 1 << in->bitsPerPixel; + int shift = colourMap->is16?16:8; + + if (*table) free(*table); + *table = (char *)malloc(nEntries * sizeof(OUT_T)); + t = (OUT_T *)*table; + + for (i = 0; i < nEntries; i++) { + r = g = b = 0; + if(i < colourMap->count) { + if(colourMap->is16) { + r = colourMap->data.shorts[3*i+0]; + g = colourMap->data.shorts[3*i+1]; + b = colourMap->data.shorts[3*i+2]; + } else { + r = colourMap->data.bytes[3*i+0]; + g = colourMap->data.bytes[3*i+1]; + b = colourMap->data.bytes[3*i+2]; + } + } + t[i] = ((((r * (1 + out->redMax)) >> shift) << out->redShift) | + (((g * (1 + out->greenMax)) >> shift) << out->greenShift) | + (((b * (1 + out->blueMax)) >> shift) << out->blueShift)); +#if (OUT != 8) + if (out->bigEndian != in->bigEndian) { + t[i] = SwapOUT(t[i]); + } +#endif + } +} + +#undef OUT_T +#undef SwapOUT +#undef rfbInitColourMapSingleTableOUT |