[Openal] Play sound back with OpenAl ?

[Chris Robinson]

On Thursday 22 May 2008 02:34:23 am you wrote:
> You do not understand me.
> I go to perform a multimedia application that will allow me to manipulate
> the sounds (play pause, fast backward, fast forward ..)
> I have not been able to make fast backward and listen at the same time the
> sounds that go back.
> How to do this ? (fast backward and listen at the same time the sounds that
> go back).

Ah, you want to play the sound backward. Unfortuantely, OpenAL doesn't really 
allow that. If you simply want to skip backwards, you could just continuously 
set the play position back, eg:

ALfloat curpos = 0.0f;
alGetSourcef(sourceID, AL_SEC_OFFSET, &curpos);

curpos -= 0.125f;
while(curpos > 0.0f) {
    alSourcef(sourceID, AL_SEC_OFFSET, curpos);
    curpos -= 0.125f;
}
curpos = 0.0f;
alSourceStop(sourceID);

but if you wanted it to play smoothly, you'd have to modify the actual data 
that you'd pass to alBufferData again (of course, this means stopping the 
sound first).