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cdrom.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2005 The ScummVM project
 *
 * 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.
 *
 * $Header: /cvsroot/scummvm/scummvm/gob/cdrom.cpp,v 1.3.2.1 2005/10/18 02:11:18 sev Exp $
 *
 */
#include "gob/gob.h"
#include "gob/cdrom.h"
#include "gob/dataio.h"
#include "gob/game.h"
#include "gob/global.h"
#include "gob/util.h"
#include "sound/audiocd.h"

namespace Gob {

byte *cd_LICbuffer;
char cd_curTrack[16];
uint16 cd_numTracks;
bool cd_globFlag;
uint32 cd_trackStop;
uint32 cd_startTime;

void cd_readLIC(const char *fname) {
      char tmp[80];
      int handle;
      uint16 version, startChunk, pos;

      cd_freeLICbuffer();

      *cd_curTrack = 0;

      strcpy(tmp, fname);

      handle = data_openData(tmp);

      if (handle == -1)
            return;

      data_closeData(handle);

      data_getUnpackedData(tmp);

      handle = data_openData(tmp);

      data_readData(handle, (char *)&version, 2);
      version = READ_LE_UINT16(&version);

      data_readData(handle, (char *)&startChunk, 2);
      startChunk = READ_LE_UINT16(&startChunk);

      data_readData(handle, (char *)&cd_numTracks, 2);
      cd_numTracks = READ_LE_UINT16(&cd_numTracks);

      if (version != 3) {
            error("Wrong file %s (%d)", fname, version);
            return;
      }

      data_seekData(handle, 50, SEEK_SET);

      for (int i = 0; i < startChunk; i++) {
            data_readData(handle, (char *)&pos, 2);
            pos = READ_LE_UINT16(&pos);

            if (!pos)
                  break;

            data_seekData(handle, pos, SEEK_CUR);
      }

      cd_LICbuffer = (byte *)malloc(cd_numTracks * 22);
      data_readData(handle, (char *)cd_LICbuffer, cd_numTracks * 22);

      data_closeData(handle);
}

void cd_freeLICbuffer(void) {
      free(cd_LICbuffer);
      cd_LICbuffer = 0;
}

void cd_playBgMusic() {
      static const char *tracks[][2] = {
            {"avt00.tot",  "mine"},
            {"avt001.tot", "nuit"},
            {"avt002.tot", "campagne"},
            {"avt003.tot", "extsor1"},
            {"avt004.tot", "interieure"},
            {"avt005.tot", "zombie"},
            {"avt006.tot", "zombie"},
            {"avt007.tot", "campagne"},
            {"avt008.tot", "campagne"},
            {"avt009.tot", "extsor1"},
            {"avt010.tot", "extsor1"},
            {"avt011.tot", "interieure"},
            {"avt012.tot", "zombie"},
            {"avt014.tot", "nuit"},
            {"avt015.tot", "interieure"},
            {"avt016.tot", "statue"},
            {"avt017.tot", "zombie"},
            {"avt018.tot", "statue"},
            {"avt019.tot", "mine"},
            {"avt020.tot", "statue"},
            {"avt021.tot", "mine"},
            {"avt022.tot", "zombie"}
      };

      for (int i = 0; i < ARRAYSIZE(tracks); i++)
            if (!scumm_stricmp(game_curTotFile, tracks[i][0])) {
                  cd_startTrack(tracks[i][1]);
                  break;
            }
}

void cd_playMultMusic() {
      static const char *tracks[][6] = {
            {"avt005.tot", "fra1", "all1", "ang1", "esp1", "ita1"},
            {"avt006.tot", "fra2", "all2", "ang2", "esp2", "ita2"},
            {"avt012.tot", "fra3", "all3", "ang3", "esp3", "ita3"},
            {"avt016.tot", "fra4", "all4", "ang4", "esp4", "ita4"},
            {"avt019.tot", "fra5", "all5", "ang5", "esp5", "ita5"},
            {"avt022.tot", "fra6", "all6", "ang6", "esp6", "ita6"}
      };

      for (int i = 0; i < ARRAYSIZE(tracks); i++)
            if (!scumm_stricmp(game_curTotFile, tracks[i][0])) {
                  cd_globFlag = true;
                  cd_startTrack(tracks[i][language + 1]);
                  break;
            }
}

void cd_startTrack(const char *trackname) {
      byte *curPtr, *matchPtr;

      if (!cd_LICbuffer)
            return;

      debug(3, "cd_startTrack(%s)", trackname);

      matchPtr = 0;
      curPtr = cd_LICbuffer;

      for (int i = 0; i < cd_numTracks; i++) {
            if (!scumm_stricmp((char *)curPtr, trackname)) {
                  matchPtr = curPtr;
                  break;
            }
            curPtr += 22;
      }

      if (!matchPtr) {
            error("Track %s not found", trackname);
            return;
      }

      strcpy(cd_curTrack, trackname);

      cd_stopPlaying();

      while (cd_getTrackPos() != -1);

      uint32 start, end;

      start = READ_LE_UINT32(matchPtr + 12);
      end   = READ_LE_UINT32(matchPtr + 16);

      cd_play(start, end);

      cd_startTime = util_getTimeKey();
      cd_trackStop = cd_startTime + (end - start + 1 + 150) * 40 / 3;
}

void cd_play(uint32 from, uint32 to) {
      // play from sector [from] to sector [to]
      //
      // format is HSG:
      // HSG encodes frame information into a double word:
      // minute multiplied by 4500, plus second multiplied by 75,
      // plus frame, minus 150
      debug(3, "cd_play(%d, %d)", from, to);

      AudioCD.play(1, 0, from, to - from + 1);
}

int32 cd_getTrackPos(void) {
      uint32 curPos = util_getTimeKey() - cd_startTime;

      if (AudioCD.isPlaying() && (util_getTimeKey() < cd_trackStop))
            return curPos * 3 / 40;
      else
            return -1;
}

void cd_stopPlaying(void) {
      cd_stop();

      while (cd_getTrackPos() != -1);
}

void cd_stop(void) {
      debug(3, "cd_stop()");

      AudioCD.stop();
}

void cd_testCD(int trySubst, const char *label) {
      if (!trySubst) {
            error("CDROM track substitution is not supported");
            return;
      }

      cd_LICbuffer = 0;
      cd_globFlag = false;

      // Original checked CD label here
      // but will skip it as it will require OSystem extensions of direct
      // CD secor reading
}

} // End of namespace Gob

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