[MacPorts] #44386: New version of FFmpeg (specifically, avcodec.h in libavcodec) building of mplayer2

[MacPorts]

#44386: New version of FFmpeg (specifically, avcodec.h in libavcodec) building of
mplayer2
---------------------------------------+--------------------------------
 Reporter:  zmwangx@…                  |      Owner:  macports-tickets@…
     Type:  defect                     |     Status:  new
 Priority:  High                       |  Milestone:
Component:  ports                      |    Version:  2.3.1
 Keywords:  ffmpeg, libav, libavcodec  |       Port:  mplayer2
---------------------------------------+--------------------------------
 `mplayer2` requires the Libav.org version of `libavcodec` to function.
 Previously the VideoLan.org (I mean, FFmpeg.org) version of `libavcodec`
 also works, and the `mplayer2` port depends on that. However, a recent
 change to FFmpeg breaks it. Specifically, in the 2.3 release, due to
 [http://git.videolan.org/?p=ffmpeg.git;a=commit;h=67d29da4bd23057a1f646568442a77b844cb2d1b
 commit 67d29da], which says,

 {{{
 avcodec: increase FF_INPUT_BUFFER_PADDING_SIZE to 32

 Sometimes the input buffers get directly used as raw images and
 SIMD optimized video/image filters can sometimes read more than 16 bytes
 over the end.
 a specific example is the AVX 24bpp to yuv code

 This also fixes fate-vsynth3-rgb
 }}}

 The requirement

 {{{
 #include "libavcodec/avcodec.h"
 #if MP_INPUT_BUFFER_PADDING_SIZE < FF_INPUT_BUFFER_PADDING_SIZE
 #error MP_INPUT_BUFFER_PADDING_SIZE is too small!
 #endif
 }}}

 in [http://git.mplayer2.org/mplayer2/tree/libmpdemux/demuxer.c
 mplayer2.git/libmpdemux/demuxer.c] is broken, since
 `MP_INPUT_BUFFER_PADDING_SIZE` is `16` as defined in
 [http://git.mplayer2.org/mplayer2/tree/libmpdemux/demuxer.h
 mplayer2.git/libmpdemux/demuxer.h].

 This is clearly reflected in the following error when running `port
 install -v mplayer2`:

 {{{
 libmpdemux/demuxer.c:48:2: error: MP_INPUT_BUFFER_PADDING_SIZE is too
 small!
 #error MP_INPUT_BUFFER_PADDING_SIZE is too small!
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/44386>
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