How is data arranged in MapInfo.data?

[Christoph Kuhr]

Hi *,

In my app sink, I want to copy the data provided by new-sample callback
to a non-gstreamer buffer.
The format of the audio data is S16LE.
How is the audio data arranged in GstMapInfo.data?
I tried the following, but it does not to work:

    sample = gst_app_sink_pull_sample( sink );

    if( sample ){
        buffer =  gst_sample_get_buffer( sample );

        gst_buffer_map( buffer, &mem, GST_MAP_READ );

        for (guint i = 0; i < mem.size; i+=2){
            guint8 lo = mem.data[i];
            guint8 hi = mem.data[i+1];
            int16 hilo = (hi << 8) | lo;
            castData->sampleBuffer->buffer[
castData->sampleBuffer->cnt++ ] = hilo;           
        }
        gst_buffer_unmap( buffer, &mem );

Can anyone give me a hint, where I can find documentation for this?

BR,
Ck