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Audio and MMAL

Posted: Tue Sep 10, 2013 5:18 pm
by G4GUO
I have been looking at the the MMAL API and I notice that it does not support audio objects.
I assume therefore that for any audio I want to encode I will have to use the main ARM
processor rather than the GPU?

- Charles

Re: Audio and MMAL

Posted: Tue Sep 10, 2013 5:26 pm
by jamesh
G4GUO wrote:I have been looking at the the MMAL API and I notice that it does not support audio objects.
I assume therefore that for any audio I want to encode I will have to use the main ARM
processor rather than the GPU?

- Charles
That's correct. Rather unbelievably, the cost of the codecs licences on the GPU for the audio was too high - higher even than the much more complicated video encoders.

Re: Audio and MMAL

Posted: Tue Sep 10, 2013 5:48 pm
by G4GUO
jamesh wrote: That's correct. Rather unbelievably, the cost of the codecs licences on the GPU for the audio was too high - higher even than the much more complicated video encoders.
Thanks, I could see from the header that various audio encoders could be supported by the GPU and I was wondering why
they were not, now I know! It would be nice to have the option to pay for a GPU audio codec but I guess the demand is not
great enough to make it worthwhile.

- Charles