[FFmpeg-devel] [PATCH 0/2] VDA decoder for ffmpeg

[Reimar Döffinger]

On 21 Aug 2012, at 03:48, Xidorn Quan <quanxunzhen at gmail.com> wrote:
> This patchset attempts to implement a VDA decoder for H.264 video.
> 
> Though this decoder reuses functions in VDA HWAccel to work with VDA,
> they are different. Providing a decoder enables downstream players to
> use VDA directly without much change. FFmpeg itself may benefit from
> this decoder as well. And since VDA can output raw yuy2 pictures, 
> there will be no performance loss to use this decoder instead of
> origin H.264 decoder with VDA HWAccel (even faster because there is
> no memory copying inside the decoder.)

Thanks, I really like the feature, but why can't you instantiate a full H.264 decoder with VDA HWAccel like an external application would instead of reimplementing lots of the header parsing?