void alSourcef(ALuint source, ALenum param, ALfloat value)
{
DEBUGLOGCALL(LCF_OPENAL);
AudioSource* as = audiocontext.getSource(source);
if (as == nullptr) {
ALSETERROR(AL_INVALID_NAME);
return;
}
AudioBuffer* ab;
switch(param) {
case AL_GAIN:
as->volume = value;
debuglog(LCF_OPENAL, " Set gain of ", value);
break;
case AL_PITCH:
case AL_MIN_GAIN:
case AL_MAX_GAIN:
case AL_MAX_DISTANCE:
case AL_ROLLOFF_FACTOR:
case AL_CONE_OUTER_GAIN:
case AL_CONE_INNER_ANGLE:
case AL_CONE_OUTER_ANGLE:
case AL_REFERENCE_DISTANCE:
debuglog(LCF_OPENAL, "Operation not supported");
break;
case AL_SEC_OFFSET:
/* We fetch the buffer format of the source.
* Normally, all buffers from a queue share the exact same format.
*/
if (! as->buffer_queue.empty()) {
ab = as->buffer_queue[0];
debuglog(LCF_OPENAL, " Set position of ", value, " seconds");
value *= (ALfloat) ab->frequency;
as->setPosition((int)value);
}
break;
case AL_SAMPLE_OFFSET:
/* We fetch the buffer format of the source.
* Normally, all buffers from a queue share the exact same format.
*/
debuglog(LCF_OPENAL, " Set position of ", value, " samples");
as->setPosition((int)value);
break;
case AL_BYTE_OFFSET:
if (! as->buffer_queue.empty()) {
ab = as->buffer_queue[0];
value /= (ALfloat) ab->alignSize;
debuglog(LCF_OPENAL, " Set position of ", value, " bytes");
as->setPosition((int)value);
}
break;
default:
ALSETERROR(AL_INVALID_OPERATION);
return;
}
}
void alSourcePlay(ALuint source)
{
DEBUGLOGCALL(LCF_OPENAL);
AudioSource* as = audiocontext.getSource(source);
if (as == nullptr)
return;
if (as->state == SOURCE_PLAYING) {
/* Restart the play from the beginning */
as->setPosition(0);
}
as->state = SOURCE_PLAYING;
}
void alSourceRewind(ALuint source)
{
DEBUGLOGCALL(LCF_OPENAL);
AudioSource* as = audiocontext.getSource(source);
if (as == nullptr)
return;
if (as->state == SOURCE_INITIAL) {
/* Illegal operation. */
return;
}
as->setPosition(0);
as->state = SOURCE_INITIAL;
}
