/apps/desktop/libvncserver/tableinitcmtemplate.c
http://ftk.googlecode.com/ · C · 84 lines · 45 code · 7 blank · 32 comment · 8 complexity · 5b291add26ee0b6fbc795804ebe5e015 MD5 · raw file
- /*
- * 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 CONCAT3E(uint,OUT,_t)
- #define SwapOUT(x) CONCAT2E(Swap,OUT(x))
- #define rfbInitColourMapSingleTableOUT \
- CONCAT2E(rfbInitColourMapSingleTable,OUT)
- static void
- rfbInitColourMapSingleTableOUT(char **table, rfbPixelFormat *in,
- rfbPixelFormat *out,rfbColourMap* colourMap)
- {
- uint32_t i, r, g, b;
- OUT_T *t;
- uint32_t 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