[FFmpeg-devel] [GSoC] [RFC] Abstract AVFilterFormats to AVRefCountedList for reuse

[Mina Nagy Zaki]

AVRefCountedList will be used for lists of supported formats and channel 
layouts. There is a problem currently with chlayouts, they are int64 while 
formats are int32. I could not determine why chlayouts are 64 bit, but trying 
to change them will break API/ABI. This means AVRefCountedList will have to 
support both. After discussion with Stefano I think simply having a 
avfilter_refcounted_list_make32() will do. Video filters will have to use that 
since they will store PixelFormat lists, which are enums and hence 32bit.

The patches are against Stefano's rebased audio-filter-* branches. For the full 
branch see audio-filters-20110530 from https://gitorious.org/~mnzaki/ffmpeg-
mirror/mnzakis-ffmpeg 

Comments appreciated.

-- 
Mina
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