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avcodec/videotoolbox: allow not setting the kCVPixelBufferPixelFormatTypeKey

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If AVVideotoolboxContext.cv_pix_fmt_type is set to 0, don't set the
kCVPixelBufferPixelFormatTypeKey value on the VT decoder.

This makes VT output its native format, which can be much faster on
some hardware iterations (if the native format does not match with
the requested format, it will be converted, which is slow).

The default is still forcing nv12.
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wm4
2017-02-24 10:17:34 +01:00
parent 227f6e1e8d
commit ade7c1a232
4 changed files with 9 additions and 3 deletions
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doc/APIchanges
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@ -15,6 +15,10 @@ libavutil: 2015-08-28
API changes, most recent first:
2017-03-02 - xxxxxxx - lavc 57.81.104 - videotoolbox.h
AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the
native decoder format. (The default value is not changed.)
2017-03-02 - xxxxxxx - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103
Remove requirement to use AVOption or accessors to access certain fields
in AVFrame, AVCodecContext, and AVFormatContext that were previously