void Sound::engine() {
// first of all, add any random sfx to the queue...
for (uint16 cnt = 0; cnt < TOTAL_FX_PER_ROOM; cnt++) {
uint16 fxNo = _roomsFixedFx[Logic::_scriptVars[SCREEN]][cnt];
if (fxNo) {
if (_fxList[fxNo].type == FX_RANDOM) {
if (_rnd.getRandomNumber(_fxList[fxNo].delay) == 0)
addToQueue(fxNo);
}
} else
break;
}
// now process the queue
for (uint8 cnt2 = 0; cnt2 < _endOfQueue; cnt2++) {
if (_fxQueue[cnt2].delay > 0) {
_fxQueue[cnt2].delay--;
if (_fxQueue[cnt2].delay == 0)
playSample(&_fxQueue[cnt2]);
} else {
if (!_mixer->isSoundHandleActive(_fxQueue[cnt2].handle)) { // sound finished
_resMan->resClose(getSampleId(_fxQueue[cnt2].id));
if (cnt2 != _endOfQueue - 1)
_fxQueue[cnt2] = _fxQueue[_endOfQueue - 1];
_endOfQueue--;
}
}
}
}
int Sound::addToQueue(int32 fxNo) {
bool alreadyInQueue = false;
for (uint8 cnt = 0; (cnt < _endOfQueue) && (!alreadyInQueue); cnt++)
if (_fxQueue[cnt].id == (uint32)fxNo)
alreadyInQueue = true;
if (!alreadyInQueue) {
if (_endOfQueue == MAX_FXQ_LENGTH) {
warning("Sound queue overflow");
return 0;
}
uint32 sampleId = getSampleId(fxNo);
if ((sampleId & 0xFF) != 0xFF) {
_resMan->resOpen(sampleId);
_fxQueue[_endOfQueue].id = fxNo;
if (_fxList[fxNo].type == FX_SPOT)
_fxQueue[_endOfQueue].delay = _fxList[fxNo].delay + 1;
else
_fxQueue[_endOfQueue].delay = 1;
_endOfQueue++;
return 1;
}
return 0;
}
return 0;
}
void Sound::playSample(QueueElement *elem) {
uint8 *sampleData = (uint8 *)_resMan->fetchRes(getSampleId(elem->id));
for (uint16 cnt = 0; cnt < MAX_ROOMS_PER_FX; cnt++) {
if (_fxList[elem->id].roomVolList[cnt].roomNo) {
if ((_fxList[elem->id].roomVolList[cnt].roomNo == (int)Logic::_scriptVars[SCREEN]) ||
(_fxList[elem->id].roomVolList[cnt].roomNo == -1)) {
uint8 volL = (_fxList[elem->id].roomVolList[cnt].leftVol * 10 * _sfxVolL) / 255;
uint8 volR = (_fxList[elem->id].roomVolList[cnt].rightVol * 10 * _sfxVolR) / 255;
int8 pan = (volR - volL) / 2;
uint8 volume = (volR + volL) / 2;
if (SwordEngine::isPsx()) {
uint32 size = READ_LE_UINT32(sampleData);
Audio::AudioStream *audStream = Audio::makeLoopingAudioStream(Audio::makeXAStream(new Common::MemoryReadStream(sampleData + 4, size - 4), 11025), (_fxList[elem->id].type == FX_LOOP) ? 0 : 1);
_mixer->playStream(Audio::Mixer::kSFXSoundType, &elem->handle, audStream, elem->id, volume, pan);
} else {
uint32 size = READ_LE_UINT32(sampleData + 0x28);
uint8 flags;
if (READ_LE_UINT16(sampleData + 0x22) == 16)
flags = Audio::FLAG_16BITS | Audio::FLAG_LITTLE_ENDIAN;
else
flags = Audio::FLAG_UNSIGNED;
if (READ_LE_UINT16(sampleData + 0x16) == 2)
flags |= Audio::FLAG_STEREO;
Audio::AudioStream *stream = Audio::makeLoopingAudioStream(
Audio::makeRawStream(sampleData + 0x2C, size, 11025, flags, DisposeAfterUse::NO),
(_fxList[elem->id].type == FX_LOOP) ? 0 : 1);
_mixer->playStream(Audio::Mixer::kSFXSoundType, &elem->handle, stream, elem->id, volume, pan);
}
}
} else
break;
}
}
Sound::~Sound() {
// clean up fx queue
_mixer->stopAll();
for (uint8 cnt = 0; cnt < _endOfQueue; cnt++)
if (_fxQueue[cnt].delay == 0)
_resMan->resClose(getSampleId(_fxQueue[cnt].id));
_endOfQueue = 0;
closeCowSystem();
}
void Sound::fnStopFx(int32 fxNo) {
_mixer->stopID(fxNo);
for (uint8 cnt = 0; cnt < _endOfQueue; cnt++)
if (_fxQueue[cnt].id == (uint32)fxNo) {
if (!_fxQueue[cnt].delay) // sound was started
_resMan->resClose(getSampleId(_fxQueue[cnt].id));
if (cnt != _endOfQueue - 1)
_fxQueue[cnt] = _fxQueue[_endOfQueue - 1];
_endOfQueue--;
return;
}
debug(8, "fnStopFx: id not found in queue");
}
