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MOHAWK: Add some supporting code for cue lists.

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svn-id: r55328
This commit is contained in:
Alyssa Milburn 2011-01-19 16:36:34 +00:00
parent e2d9a34bee
commit 017ab4c503
2 changed files with 36 additions and 17 deletions
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45
engines/mohawk/sound.cpp
View File

@ -74,7 +74,7 @@ void Sound::initMidi() {
_midiParser->setTimerRate(_midiDriver->getBaseTempo());
}
Audio::AudioStream *Sound::makeAudioStream(uint16 id) {
Audio::AudioStream *Sound::makeAudioStream(uint16 id, CueList *cueList) {
Audio::AudioStream *audStream = NULL;
switch (_vm->getGameType()) {
@ -91,21 +91,22 @@ Audio::AudioStream *Sound::makeAudioStream(uint16 id) {
audStream = makeOldMohawkWaveStream(_vm->getResource(ID_WAV, id));
break;
default:
audStream = makeMohawkWaveStream(_vm->getResource(ID_TWAV, id));
audStream = makeMohawkWaveStream(_vm->getResource(ID_TWAV, id), cueList);
}
return audStream;
}
Audio::SoundHandle *Sound::playSound(uint16 id, byte volume, bool loop) {
Audio::SoundHandle *Sound::playSound(uint16 id, byte volume, bool loop, CueList *cueList) {
debug (0, "Playing sound %d", id);
Audio::AudioStream *audStream = makeAudioStream(id);
Audio::AudioStream *audStream = makeAudioStream(id, cueList);
if (audStream) {
SndHandle *handle = getHandle();
handle->type = kUsedHandle;
handle->id = id;
handle->samplesPerSecond = audStream->getRate();
// Set the stream to loop here if it's requested
if (loop)
@ -339,10 +340,9 @@ void Sound::resumeSLST() {
_vm->_mixer->pauseHandle(*_currentSLSTSounds[i].handle, false);
}
Audio::AudioStream *Sound::makeMohawkWaveStream(Common::SeekableReadStream *stream) {
Audio::AudioStream *Sound::makeMohawkWaveStream(Common::SeekableReadStream *stream, CueList *cueList) {
uint32 tag = 0;
ADPCMStatus adpcmStatus;
CueList cueList;
DataChunk dataChunk;
uint32 dataSize = 0;
@ -388,26 +388,33 @@ Audio::AudioStream *Sound::makeMohawkWaveStream(Common::SeekableReadStream *stre
// Cues are used for animation sync. There are a couple in Myst and
// Riven but are not used there at all.
cueList.size = stream->readUint32BE();
cueList.pointCount = stream->readUint16BE();
if (!cueList) {
uint32 size = stream->readUint32BE();
stream->skip(size);
break;
}
if (cueList.pointCount == 0)
cueList->size = stream->readUint32BE();
cueList->pointCount = stream->readUint16BE();
if (cueList->pointCount == 0)
debug(2, "Cue# chunk found with no points!");
else
debug(2, "Cue# chunk found with %d point(s)!", cueList.pointCount);
debug(2, "Cue# chunk found with %d point(s)!", cueList->pointCount);
for (uint16 i = 0; i < cueList.pointCount; i++) {
cueList.points[i].sampleFrame = stream->readUint32BE();
for (uint16 i = 0; i < cueList->pointCount; i++) {
cueList->points[i].sampleFrame = stream->readUint32BE();
byte nameLength = stream->readByte();
cueList->points[i].name.clear();
for (byte j = 0; j < nameLength; j++)
cueList.points[i].name += stream->readByte();
cueList->points[i].name += stream->readByte();
// Realign to an even boundary
if (!(nameLength & 1))
stream->readByte();
debug (3, "Cue# chunk point %d: %s", i, cueList.points[i].name.c_str());
debug (3, "Cue# chunk point %d (frame %d): %s", i, cueList->points[i].sampleFrame, cueList->points[i].name.c_str());
}
break;
case ID_DATA:
@ -549,6 +556,15 @@ bool Sound::isPlaying(uint16 id) {
return false;
}
uint Sound::getNumSamplesPlayed(uint16 id) {
for (uint32 i = 0; i < _handles.size(); i++)
if (_handles[i].type == kUsedHandle && _handles[i].id == id) {
return (_vm->_mixer->getSoundElapsedTime(_handles[i].handle) * _handles[i].samplesPerSecond) / 1000;
}
return 0;
}
uint16 Sound::convertMystID(uint16 id) {
// Myst ME is a bit more efficient with sound storage than Myst
// Myst has lots of sounds repeated. To overcome this, Myst ME
@ -588,6 +604,7 @@ Audio::SoundHandle *Sound::replaceBackgroundMyst(uint16 id, uint16 volume) {
SndHandle *handle = getHandle();
handle->type = kBackgroundHandle;
handle->id = id;
handle->samplesPerSecond = audStream->getRate();
// Set the stream to loop
audStream = Audio::makeLoopingAudioStream((Audio::RewindableAudioStream *)audStream, 0);

8
engines/mohawk/sound.h
View File

@ -66,6 +66,7 @@ enum SndHandleType {
struct SndHandle {
Audio::SoundHandle handle;
SndHandleType type;
uint samplesPerSecond;
uint16 id;
};
@ -120,7 +121,7 @@ public:
~Sound();
// Generic sound functions
Audio::SoundHandle *playSound(uint16 id, byte volume = Audio::Mixer::kMaxChannelVolume, bool loop = false);
Audio::SoundHandle *playSound(uint16 id, byte volume = Audio::Mixer::kMaxChannelVolume, bool loop = false, CueList *cueList = NULL);
void playSoundBlocking(uint16 id, byte volume = Audio::Mixer::kMaxChannelVolume);
void playMidi(uint16 id);
void stopMidi();
@ -129,6 +130,7 @@ public:
void pauseSound();
void resumeSound();
bool isPlaying(uint16 id);
uint getNumSamplesPlayed(uint16 id);
// Myst-specific sound functions
Audio::SoundHandle *replaceSoundMyst(uint16 id, byte volume = Audio::Mixer::kMaxChannelVolume, bool loop = false);
@ -152,13 +154,13 @@ private:
MidiParser *_midiParser;
byte *_midiData;
static Audio::AudioStream *makeMohawkWaveStream(Common::SeekableReadStream *stream);
static Audio::AudioStream *makeMohawkWaveStream(Common::SeekableReadStream *stream, CueList *cueList = NULL);
static Audio::AudioStream *makeOldMohawkWaveStream(Common::SeekableReadStream *stream);
void initMidi();
Common::Array<SndHandle> _handles;
SndHandle *getHandle();
Audio::AudioStream *makeAudioStream(uint16 id);
Audio::AudioStream *makeAudioStream(uint16 id, CueList *cueList = NULL);
uint16 convertMystID(uint16 id);
// Riven-specific