[pulseaudio-discuss] A2DP AAC streaming Decoder

Pierre-Louis Bossart pierre-louis.bossart at linux.intel.com
Thu Jan 21 08:51:22 PST 2016

On 1/21/16 4:19 AM, Hong-Rong Lin wrote:
> Hi All,
> I would like to decode AAC frames from A2DP packets, and feed AAC data into AAC audio decoder to output audio, ie, Bluetooth speaker function supporting AAC streaming.
> I have found there are sbc_decode() source code in pulseaudio-2.1, but I cannot find aac_decode().
> Could all of you tell me how to get the aac_decode() source code in the internet? Thanks a lot.

It looks like you are trying to build an A2DP sink. If I remember well 
the AAC payload is transmitted with the LATM syntax so it's a little 
more elaborate than just decoding the AAC bits, there are quite a few 
opens on how to extract the packets. Google "A2DP AAC LATM" for more info.

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