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cdrom.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/gob/cdrom.cpp $
 * $Id: cdrom.cpp 30944 2008-02-23 22:50:18Z sev $
 *
 */


#include "common/endian.h"
#include "sound/audiocd.h"

#include "gob/gob.h"
#include "gob/cdrom.h"
#include "gob/global.h"
#include "gob/util.h"
#include "gob/dataio.h"
#include "gob/game.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;

      strncpy0(tmp, fname, 79);

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

      if (handle == -1)
            return;

      _vm->_dataIO->closeData(handle);

      _vm->_dataIO->getUnpackedData(tmp);

      handle = _vm->_dataIO->openData(tmp);
      DataStream *stream = _vm->_dataIO->openAsStream(handle, true);

      version = stream->readUint16LE();
      startChunk = stream->readUint16LE();
      _numTracks = stream->readUint16LE();

      if (version != 3)
            error("%s: Unknown version %d", fname, version);

      stream->seek(50);

      for (int i = 0; i < startChunk; i++) {
            pos = stream->readUint16LE();

            if (!pos)
                  break;

            stream->skip(pos);
      }

      _LICbuffer = new byte[_numTracks * 22];
      stream->read(_LICbuffer, _numTracks * 22);

      delete stream;
}

void CDROM::freeLICbuffer() {
      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"}
      };

      // Default to "ang?" for other languages (including EN_USA)
      int language = _vm->_global->_language <= 4 ? _vm->_global->_language : 2;
      for (int i = 0; i < ARRAYSIZE(tracks); i++)
            if (!scumm_stricmp(_vm->_game->_curTotFile, tracks[i][0])) {
                  startTrack(tracks[i][language + 1]);
                  break;
            }
}

void CDROM::startTrack(const char *trackName) {
      if (!_LICbuffer)
            return;

      debugC(1, kDebugMusic, "CDROM::startTrack(%s)", trackName);

      byte *matchPtr = getTrackBuffer(trackName);
      if (!matchPtr) {
            warning("Track \"%s\" not found", trackName);
            return;
      }

      strncpy0(_curTrack, trackName, 15);

      stopPlaying();
      _curTrackBuffer = matchPtr;

      while (getTrackPos() >= 0);

      uint32 start = READ_LE_UINT32(matchPtr + 12);
      uint32 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, kDebugMusic, "CDROM::play(%d, %d)", from, to);

      AudioCD.play(1, 1, from, to - from + 1);
      _cdPlaying = true;
}

int32 CDROM::getTrackPos(const char *keyTrack) {
      byte *keyBuffer = getTrackBuffer(keyTrack);
      uint32 curPos = (_vm->_util->getTimeKey() - _startTime) * 3 / 40;

      if (_cdPlaying && (_vm->_util->getTimeKey() < _trackStop)) {
            if (keyBuffer && _curTrackBuffer && (keyBuffer != _curTrackBuffer)) {
                  uint32 kStart = READ_LE_UINT32(keyBuffer + 12);
                  uint32 kEnd = READ_LE_UINT32(keyBuffer + 16);
                  uint32 cStart = READ_LE_UINT32(_curTrackBuffer + 12);
                  uint32 cEnd = READ_LE_UINT32(_curTrackBuffer + 16);

                  if ((kStart >= cStart) && (kEnd <= cEnd)) {
                        if ((kStart - cStart) > curPos)
                              return -2;
                        if ((kEnd - cStart) < curPos)
                              return -1;
                  }
            }

            return curPos;
      } else
            return -1;
}

const char *CDROM::getCurTrack() {
      return _curTrack;
}

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

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

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

      _curTrackBuffer = 0;
      AudioCD.stop();
      _cdPlaying = false;
}

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
}

byte *CDROM::getTrackBuffer(const char *trackName) {
      if (!_LICbuffer || !trackName)
            return 0;

      byte *matchPtr = 0;
      byte *curPtr = _LICbuffer;

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

      return matchPtr;
}

} // End of namespace Gob

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