mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-22 01:39:57 +00:00
135 lines
4.0 KiB
C++
135 lines
4.0 KiB
C++
/* 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.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
#include "sound/audiocd.h"
|
|
#include "sound/audiostream.h"
|
|
#include "sound/mp3.h"
|
|
#include "sound/vorbis.h"
|
|
#include "sound/flac.h"
|
|
#include "engines/engine.h"
|
|
#include "common/file.h"
|
|
#include "common/util.h"
|
|
#include "common/system.h"
|
|
|
|
DECLARE_SINGLETON(Audio::AudioCDManager);
|
|
|
|
namespace Audio {
|
|
|
|
AudioCDManager::AudioCDManager() {
|
|
_cd.playing = false;
|
|
_cd.track = 0;
|
|
_cd.start = 0;
|
|
_cd.duration = 0;
|
|
_cd.numLoops = 0;
|
|
_mixer = g_system->getMixer();
|
|
assert(_mixer);
|
|
}
|
|
|
|
void AudioCDManager::play(int track, int numLoops, int startFrame, int duration) {
|
|
if (numLoops != 0 || startFrame != 0) {
|
|
_cd.track = track;
|
|
_cd.numLoops = numLoops;
|
|
_cd.start = startFrame;
|
|
_cd.duration = duration;
|
|
|
|
// Try to load the track from a compressed data file, and if found, use
|
|
// that. If not found, attempt to start regular Audio CD playback of
|
|
// the requested track.
|
|
char trackName[2][16];
|
|
sprintf(trackName[0], "track%d", track);
|
|
sprintf(trackName[1], "track%02d", track);
|
|
Audio::AudioStream *stream = 0;
|
|
|
|
for (int i = 0; !stream && i < 2; ++i) {
|
|
/*
|
|
FIXME: Seems numLoops == 0 and numLoops == 1 both indicate a single repetition,
|
|
while all other positive numbers indicate precisely the number of desired
|
|
repetitions. Finally, -1 means infinitely many
|
|
*/
|
|
// We multiply by 40 / 3 = 1000 / 75 to convert frames to milliseconds
|
|
stream = AudioStream::openStreamFile(trackName[i], startFrame * 40 / 3, duration * 40 / 3, (numLoops < 1) ? numLoops + 1 : numLoops);
|
|
}
|
|
|
|
// Stop any currently playing emulated track
|
|
_mixer->stopHandle(_cd.handle);
|
|
|
|
// HACK: We abuse _cd.playing to store whether we are playing a real or an emulated track.
|
|
if (stream != 0) {
|
|
_cd.playing = true;
|
|
_mixer->playInputStream(Audio::Mixer::kMusicSoundType, &_cd.handle, stream);
|
|
} else {
|
|
_cd.playing = false;
|
|
g_system->playCD(track, numLoops, startFrame, duration);
|
|
}
|
|
}
|
|
}
|
|
|
|
void AudioCDManager::stop() {
|
|
if (_cd.playing) {
|
|
// Audio CD emulation
|
|
_mixer->stopHandle(_cd.handle);
|
|
_cd.playing = false;
|
|
} else {
|
|
// Real Audio CD
|
|
g_system->stopCD();
|
|
}
|
|
}
|
|
|
|
bool AudioCDManager::isPlaying() const {
|
|
if (_cd.playing) {
|
|
// Audio CD emulation
|
|
return _mixer->isSoundHandleActive(_cd.handle);
|
|
} else {
|
|
// Real Audio CD
|
|
return g_system->pollCD();
|
|
}
|
|
}
|
|
|
|
void AudioCDManager::updateCD() {
|
|
if (_cd.playing) {
|
|
// Check whether the audio track stopped playback
|
|
if (!_mixer->isSoundHandleActive(_cd.handle)) {
|
|
// FIXME: We do not update the numLoops parameter here (and in fact,
|
|
// currently can't do that). Luckily, only one engine ever checks
|
|
// this part of the AudioCD status, namely the SCUMM engine; and it
|
|
// only checks whether the track is currently set to infinite looping
|
|
// or not.
|
|
_cd.playing = false;
|
|
}
|
|
} else {
|
|
g_system->updateCD();
|
|
}
|
|
}
|
|
|
|
AudioCDManager::Status AudioCDManager::getStatus() const {
|
|
// TODO: This could be improved for "real" CD playback.
|
|
// But to do that, we would have to extend the OSystem interface.
|
|
Status info = _cd;
|
|
info.playing = isPlaying();
|
|
return info;
|
|
}
|
|
|
|
} // End of namespace Audio
|