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cdrom.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2005-2006 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.
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/engines/gob/cdrom.cpp $
 * $Id: cdrom.cpp 21500 2006-03-29 15:59:37Z fingolfin $
 *
 */

#include "common/stdafx.h"
#include "common/endian.h"

#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 {

CDROM::CDROM(GobEngine *vm) : _vm(vm) {
      _cdPlaying = false;
      _LICbuffer = 0;
      for (int i = 0; i < 16; i++)
            _curTrack[i] = 0;
      _numTracks = 0;
      _trackStop = 0;
      _startTime = 0;
}

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

      freeLICbuffer();

      *_curTrack = 0;

      strcpy(tmp, fname);

      handle = _vm->_dataio->openData(tmp);

      if (handle == -1)
            return;

      _vm->_dataio->closeData(handle);

      _vm->_dataio->getUnpackedData(tmp);

      handle = _vm->_dataio->openData(tmp);

      _vm->_dataio->readData(handle, (char *)&version, 2);
      version = READ_LE_UINT16(&version);

      _vm->_dataio->readData(handle, (char *)&startChunk, 2);
      startChunk = READ_LE_UINT16(&startChunk);

      _vm->_dataio->readData(handle, (char *)&_numTracks, 2);
      _numTracks = READ_LE_UINT16(&_numTracks);

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

      _vm->_dataio->seekData(handle, 50, SEEK_SET);

      for (int i = 0; i < startChunk; i++) {
            _vm->_dataio->readData(handle, (char *)&pos, 2);
            pos = READ_LE_UINT16(&pos);

            if (!pos)
                  break;

            _vm->_dataio->seekData(handle, pos, SEEK_CUR);
      }

      _LICbuffer = new byte[_numTracks * 22];
      _vm->_dataio->readData(handle, (char *)_LICbuffer, _numTracks * 22);

      _vm->_dataio->closeData(handle);
}

void CDROM::freeLICbuffer(void) {
      delete[] _LICbuffer;
      _LICbuffer = 0;
}

void CDROM::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(_vm->_game->_curTotFile, tracks[i][0])) {
                  startTrack(tracks[i][1]);
                  break;
            }
}

void CDROM::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(_vm->_game->_curTotFile, tracks[i][0])) {
                  _cdPlaying = true;
                  startTrack(tracks[i][_vm->_global->_language + 1]);
                  break;
            }
}

void CDROM::startTrack(const char *trackname) {
      byte *curPtr, *matchPtr;

      if (!_LICbuffer)
            return;

      debugC(1, DEBUG_MUSIC, "startTrack(%s)", trackname);

      matchPtr = 0;
      curPtr = _LICbuffer;

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

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

      strcpy(_curTrack, trackname);

      stopPlaying();

      while (getTrackPos() != -1);

      uint32 start, end;

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

      play(start, end);

      _startTime = _vm->_util->getTimeKey();
      _trackStop = _startTime + (end - start + 1 + 150) * 40 / 3;
}

void CDROM::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
      debugC(1, DEBUG_MUSIC, "play(%d, %d)", from, to);

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

int32 CDROM::getTrackPos(void) {
      uint32 curPos = _vm->_util->getTimeKey() - _startTime;

      if (AudioCD.isPlaying() && (_vm->_util->getTimeKey() < _trackStop))
            return curPos * 3 / 40;
      else
            return -1;
}

void CDROM::stopPlaying(void) {
      stop();

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

void CDROM::stop(void) {
      debugC(1, DEBUG_MUSIC, "stop()");

      AudioCD.stop();
}

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

      _LICbuffer = 0;
      _cdPlaying = 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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