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Looping audio clips now functioning correctly in Siren.

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KRAudioSource::IsPlaying() now returning false when a non-looping audio source ends.
This commit is contained in:
Kearwood Gilbert
2013-02-27 13:11:24 -08:00
parent 52c9b90667
commit 5d1daa22dc
3 changed files with 92 additions and 65 deletions
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32
KREngine/kraken/KRAudioSource.cpp
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@@ -504,6 +504,38 @@ __int64_t KRAudioSource::getStartAudioFrame()
return m_start_audio_frame;
}
void KRAudioSource::sample(int frame_count, int channel, float *buffer, float gain)
{
KRAudioSample *source_sample = getAudioSample();
if(source_sample && m_playing) {
if(m_looping) {
int buffer_offset = 0;
int frames_left = frame_count;
int sample_length = source_sample->getFrameCount();
while(frames_left) {
int next_frame = (int)((getContext().getAudioManager()->getAudioFrame() - getStartAudioFrame() + buffer_offset) % sample_length);
if(next_frame + frames_left >= sample_length) {
int frames_processed = sample_length - next_frame;
source_sample->sample(next_frame, frames_processed, channel, buffer + buffer_offset, gain);
frames_left -= frames_processed;
buffer_offset += frames_processed;
} else {
source_sample->sample(next_frame, frames_left, channel, buffer + buffer_offset, gain);
frames_left = 0;
}
}
} else {
int next_frame = (int)(getContext().getAudioManager()->getAudioFrame() - getStartAudioFrame());
source_sample->sample(next_frame, frame_count, channel, buffer, gain);
if(next_frame > source_sample->getFrameCount()) {
stop();
}
}
} else {
memset(buffer, 0, sizeof(float) * frame_count);
}
}
OSStatus alcASASetSourceProc(const ALuint property, ALuint source, ALvoid *data, ALuint dataSize)
{
OSStatus err = noErr;