opus - Jan 2014 - Possible bug in opus_multistream_surround_encoder_create()

I get reliable crashes if I create a 6-channel encoder using
opus_multistream_surround_encoder_create().  If I use
opus_multistream_encoder_create() instead and pass in the same parameters that
opus_multistream_surround_encoder_create() sends out (streams = 4,
coupled_streams = 2, mapping = {0, 4, 1, 2, 3, 5}) I don't get the crashes.

I notice that opus_demo.c uses opus_multistream_surround_encoder_create(), but
then that file also doesn't support more than two channels.  I only got my
crashes when using 6 channels.


Brendan

The crash is in opus_multistream_surround_encoder_create() or when
trying to encode? Does the opus-tools code works for you for a 5.1 input?

	Jean-Marc

On 01/06/2014 01:28 PM, Brendan Bolles wrote:
> I get reliable crashes if I create a 6-channel encoder using
> opus_multistream_surround_encoder_create().  If I use
> opus_multistream_encoder_create() instead and pass in the same
> parameters that opus_multistream_surround_encoder_create() sends out
> (streams = 4, coupled_streams = 2, mapping = {0, 4, 1, 2, 3, 5}) I
> don't get the crashes.
> 
> I notice that opus_demo.c uses
> opus_multistream_surround_encoder_create(), but then that file also
> doesn't support more than two channels.  I only got my crashes when
> using 6 channels.
> 
> 
> Brendan
> 
> _______________________________________________ opus mailing list 
> opus at xiph.org http://lists.xiph.org/mailman/listinfo/opus
>

On Jan 6, 2014, at 1:47 PM, Jean-Marc Valin wrote:
> The crash is in opus_multistream_surround_encoder_create() or when
> trying to encode? Does the opus-tools code works for you for a 5.1 input?

It crashes on the first call to opus_multistream_encode_float().

I haven't had a chance to experiment with opus-tools yet.


Brendan