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* commit '9200514ad8717c63f82101dc394f4378854325bf':
lavf: replace AVStream.codec with AVStream.codecpar
This has been a HUGE effort from:
- Derek Buitenhuis <derek.buitenhuis@gmail.com>
- Hendrik Leppkes <h.leppkes@gmail.com>
- wm4 <nfxjfg@googlemail.com>
- Clément Bœsch <clement@stupeflix.com>
- James Almer <jamrial@gmail.com>
- Michael Niedermayer <michael@niedermayer.cc>
- Rostislav Pehlivanov <atomnuker@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
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Currently, AVStream contains an embedded AVCodecContext instance, which
is used by demuxers to export stream parameters to the caller and by
muxers to receive stream parameters from the caller. It is also used
internally as the codec context that is passed to parsers.
In addition, it is also widely used by the callers as the decoding (when
demuxer) or encoding (when muxing) context, though this has been
officially discouraged since Libav 11.
There are multiple important problems with this approach:
- the fields in AVCodecContext are in general one of
* stream parameters
* codec options
* codec state
However, it's not clear which ones are which. It is consequently
unclear which fields are a demuxer allowed to set or a muxer allowed to
read. This leads to erratic behaviour depending on whether decoding or
encoding is being performed or not (and whether it uses the AVStream
embedded codec context).
- various synchronization issues arising from the fact that the same
context is used by several different APIs (muxers/demuxers,
parsers, bitstream filters and encoders/decoders) simultaneously, with
there being no clear rules for who can modify what and the different
processes being typically delayed with respect to each other.
- avformat_find_stream_info() making it necessary to support opening
and closing a single codec context multiple times, thus
complicating the semantics of freeing various allocated objects in the
codec context.
Those problems are resolved by replacing the AVStream embedded codec
context with a newly added AVCodecParameters instance, which stores only
the stream parameters exported by the demuxers or read by the muxers.
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* qatar/master:
crypto: Use av_freep instead of av_free
lavf: don't try to free private options if priv_data is NULL.
swscale: fix types of assembly arguments.
swscale: move two macros that are only used once into caller.
swscale: remove unused function.
options: Add missing braces around struct initializer.
mov: Remove leftover crufty debug statement with references to a local file.
dvbsubdec: Fix compilation of debug code.
Remove all uses of now deprecated metadata functions.
Move metadata API from lavf to lavu.
Conflicts:
doc/APIchanges
libavformat/aiffdec.c
libavformat/asfdec.c
libavformat/avformat.h
libavformat/avidec.c
libavformat/cafdec.c
libavformat/matroskaenc.c
libavformat/mov.c
libavformat/mp3enc.c
libavformat/wtv.c
libavutil/avutil.h
libavutil/internal.h
libswscale/swscale.c
libswscale/x86/swscale_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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* qatar/master: (25 commits)
Replace custom DEBUG preprocessor trickery by the standard one.
vorbis: Remove non-compiling debug statement.
vorbis: Remove pointless DEBUG #ifdef around debug output macros.
cook: Remove non-compiling debug output.
Remove pointless #ifdefs around function declarations in a header.
Replace #ifdef + av_log() combinations by av_dlog().
Replace custom debug output functions by av_dlog().
cook: Remove unused debug functions.
Remove stray extra arguments from av_dlog() invocations.
targa: fix big-endian build
v4l2: remove one forgotten use of AVFormatParameters.pix_fmt.
vfwcap: add a framerate private option.
v4l2: add a framerate private option.
libdc1394: add a framerate private option.
fbdev: add a framerate private option.
bktr: add a framerate private option.
oma: check avio_read() return value
nutdec: remove unused variable
Remove unused variables
swscale: allocate larger buffer to handle altivec overreads.
...
Conflicts:
ffmpeg.c
libavcodec/dca.c
libavcodec/dirac.c
libavcodec/error_resilience.c
libavcodec/h264.c
libavcodec/mpeg12.c
libavcodec/mpeg4videodec.c
libavcodec/mpegvideo.c
libavcodec/mpegvideo_enc.c
libavcodec/pthread.c
libavcodec/rv10.c
libavcodec/s302m.c
libavcodec/shorten.c
libavcodec/truemotion2.c
libavcodec/utils.c
libavdevice/dv1394.c
libavdevice/fbdev.c
libavdevice/libdc1394.c
libavdevice/v4l2.c
libavformat/4xm.c
libavformat/apetag.c
libavformat/asfdec.c
libavformat/avidec.c
libavformat/mmf.c
libavformat/mpeg.c
libavformat/mpegenc.c
libavformat/mpegts.c
libavformat/oggdec.c
libavformat/oggparseogm.c
libavformat/rl2.c
libavformat/rmdec.c
libavformat/rpl.c
libavformat/rtpdec_latm.c
libavformat/sauce.c
libavformat/sol.c
libswscale/utils.c
tests/ref/vsynth1/error
tests/ref/vsynth2/error
Merged-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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In the name of consistency:
get_byte -> avio_r8
get_<type> -> avio_r<type>
get_buffer -> avio_read
get_partial_buffer will be made private later
get_strz is left out becase I want to change it later to return
something useful.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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Originally committed as revision 24326 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24300 to svn://svn.ffmpeg.org/ffmpeg/trunk
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