Yes, I'm facing the exact same problem. It looks like a bug in
AudioTrack. For me the GREF count seems to increase by 2 for every
creation and use of AudioTrack, and it never goes down. I do not see
this problem when instead creating and using MediaPlayer (and writing
synthesized sound to flash memory), supporting the conclusion that the
problem lies with AudioTrack.
Thanks
On Jun 27, 5:59 pm, Morné Pistorius <mpistor...@gmail.com> wrote:
> Hi all,
>
> If I create and release multiple AudioTrack objects, theGREFcount
> continually increases which eventually causes an application crash.
> This small test code snipped illustrates the problem:
>
> byte[] buffer = readAudioFile( "audio.raw" );
> for ( int n = 0; n < 10; ++n )
> {
> for ( int i = 0; i < 100; ++i )
> {
> Log.v("Info", "Track " + n + "," + i );
> AudioTrack newTrack = new AudioTrack
> ( AudioManager.STREAM_MUSIC, 16000,
>
> AudioFormat.CHANNEL_CONFIGURATION_MONO,
>
> AudioFormat.ENCODING_PCM_16BIT,
>
> buffer.length, AudioTrack.MODE_STATIC );
>
> newTrack.write( buffer, 0, buffer.length );
> newTrack.flush();
> newTrack.release();
> }
>
> Runtime.getRuntime().gc();
> }
>
> Even with a forced garbage collection, I end up with the same highGREFcount
> at the end of the loop. In my application, I continuously
> create AudioTracks from variable lenght buffers. I guess I can try
> and use a fixed size pool of AudioTracks each with a buffer large
> enough to fit my longest sound, and try and reuse them. Is there a
> better/correct way to completely clear resources used by an
> AudioTrack?
>
> Any help will be greatly appreciated,
> Thanks!
> Morne
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