[FFmpeg-devel] OSX AudioToolbox codec support
rodger.combs at gmail.com
Tue Mar 1 10:49:13 CET 2016
This series adds decoders and encoders based on OSX's AudioToolbox framework.
They may be faster than the native ones (particularly in cases where they can
be hardware-accelerated), the encoders are competitive on quality, and some
users may find them convenient from a licensing perspective.
ADPCM_IMA_QT can also be encoded by AudioToolbox, but I couldn't figure out how
to get it working properly, so it's left with just the decoders.
I'm not sure if the alaw/ulaw and IMA codecs are worth having at all since
they're so simple; I just threw them in since they were easy.
The ALAC encoder and decoder have been tested as bitexact.
The decoder delay handling is pretty awkward and potentially wrong; I wish we
had a version of audio_frame_queue for decoders.
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