[Openal] playing a raw buffer

[gmail]

Hi all,

i have a PCM stream recorded to file, as 16bit mono, 8Khz. The data 
buffer don't have any header/info, it contains just pure PCM samples.

I am trying to play the data:

ALint size = get_file_size(*raw);

char *buf = new char[size];

if (buf)
{
    int left = size;

    while (left>0)
    {
        raw->read (buf, left);
        left -= raw->gcount();
    }
    _t << "read size " << size << "\n";

    raw->close ();

    alGenBuffers (1, &buffer);
    alBufferData (buffer, AL_FORMAT_MONO16, buf, size, 8000);
    alGenSources (1, &source);

    ALint state;

    // attach buffer and play
    alSourcei (source, AL_BUFFER, buffer);
    alSourcePlay (source);

    do
    {
        wait (200);
        alGetSourcei (source, AL_SOURCE_STATE, &state);
    }
    while ((state == AL_PLAYING) && play);

    alSourceStop(source);
    alDeleteSources (1, &source);

    delete (buf)
}

My program anyway have still another source.

The problem is that, strange things happen: sometimes the raw file 
buffer is played fine, sometimes, if i play it after have used the other 
source, it start to be played from half of its' size. Some time it is 
not played at all.

I am quite sure i am using a bad approach,
any help is really appreciated.

greetings,
Angelo