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pal.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 program 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-11-1/engines/cine/pal.cpp $
 * $Id: pal.cpp 30944 2008-02-23 22:50:18Z sev $
 *
 */

#include "cine/cine.h"
#include "cine/various.h"

namespace Cine {

uint16 tempPalette[256];

uint16 palEntriesCount;

PalEntry *palPtr = NULL;

static byte paletteBuffer1[16];
static byte paletteBuffer2[16];

void loadPal(const char *fileName) {
      char buffer[20];

      removeExtention(buffer, fileName);

      strcat(buffer, ".PAL");

      if (palPtr) {
            free(palPtr);
            palPtr = NULL;
      }

      palEntriesCount = 0;

      Common::File palFileHandle;
      if (!palFileHandle.open(buffer))
            error("loadPal(): Cannot open file %s", fileName);

      palEntriesCount = palFileHandle.readUint16LE();
      palFileHandle.readUint16LE(); // entry size

      palPtr = (PalEntry *)malloc(palEntriesCount * sizeof(PalEntry));
      assert(palPtr);
      for (int i = 0; i < palEntriesCount; ++i) {
            palFileHandle.read(palPtr[i].name, 10);
            palFileHandle.read(palPtr[i].pal1, 16);
            palFileHandle.read(palPtr[i].pal2, 16);
      }
      palFileHandle.close();
}

int16 findPaletteFromName(const char *fileName) {
      char buffer[10];
      uint16 position = 0;
      uint16 i;

      strcpy(buffer, fileName);

      while (position < strlen(fileName)) {
            if (buffer[position] > 'a' && buffer[position] < 'z') {
                  buffer[position] += 'A' - 'a';
            }

            position++;
      }

      for (i = 0; i < palEntriesCount; i++) {
            if (!strcmp(buffer, palPtr[i].name)) {
                  return i;
            }
      }

      return -1;

}

void loadRelatedPalette(const char *fileName) {
      char localName[16];
      byte i;
      int16 paletteIndex;

      removeExtention(localName, fileName);

      paletteIndex = findPaletteFromName(localName);

      if (paletteIndex == -1) {
            for (i = 0; i < 16; i++) {    // generate default palette
                  paletteBuffer1[i] = paletteBuffer2[i] = (i << 4) + i;
            }
      } else {
            assert(paletteIndex < palEntriesCount);
            memcpy(paletteBuffer1, palPtr[paletteIndex].pal1, 16);
            memcpy(paletteBuffer2, palPtr[paletteIndex].pal2, 16);
      }
}

} // End of namespace Cine

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