| Commit message (Collapse) | Author | Age |
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
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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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`av_packet_unref` matches the AVFrame ref-counted API and can be used as
a drop in replacement.
Deprecate `av_free_packet`.
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Also reorder some other #include when applicable.
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It's supposed to be called only from (de)muxers.
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Manual replacements are done in this commit.
In many cases, the id is some constant made up number (e.g. 0 for video
and 1 for audio), which is then not used in the demuxer for anything.
Those ids are removed.
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Trivial replacements with sed are done in this commit:
sed 's/av_new_stream(\([^)]*\), 0)/avformat_new_stream(\1, NULL)/'
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It's more readable and less prone to breakage.
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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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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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It is pretty hopeless that other considerable projects will adopt
libavutil alone in other projects. Projects that need small footprint
are better off with more specialized libraries such as gnulib or rather
just copy the necessary parts that they need. With this in mind, nobody
is helped by having libavutil and libavcore split. In order to ease
maintenance inside and around FFmpeg and to reduce confusion where to
put common code, avcore's functionality is merged (back) to avutil.
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
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Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.
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SampleFormat with AVSampleFormat.
Originally committed as revision 25730 to svn://svn.ffmpeg.org/ffmpeg/trunk
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corresponding AVMEDIA_TYPE_* symbols.
Originally committed as revision 25201 to svn://svn.ffmpeg.org/ffmpeg/trunk
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the Deep".
Originally committed as revision 22942 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Passing an explicit filename to this command is only necessary if the
documentation in the @file block refers to a file different from the
one the block resides in.
Originally committed as revision 22921 to svn://svn.ffmpeg.org/ffmpeg/trunk
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is deprecated and will be dropped at the next major bump.
Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Otherwise doxygen complains about ambiguous filenames when files exist
under the same name in different subdirectories.
Originally committed as revision 16912 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 16556 to svn://svn.ffmpeg.org/ffmpeg/trunk
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fixes issue399
Originally committed as revision 14235 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 13835 to svn://svn.ffmpeg.org/ffmpeg/trunk
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patch by Stefano Sabatini, stefano.sabatini-lala poste.it
along with some spelling/consistency fixes for the long names by me
Originally committed as revision 13649 to svn://svn.ffmpeg.org/ffmpeg/trunk
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patch by: Björn Axelsson, bjorn d axelsson a intinor d se
thread: [PATCH] Remove static ByteIOContexts, 06 nov 2007
Originally committed as revision 11071 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 10291 to svn://svn.ffmpeg.org/ffmpeg/trunk
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This is a ugly hack to fix playback of specular.flc.
closes issue71
Originally committed as revision 10117 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 9760 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 9759 to svn://svn.ffmpeg.org/ffmpeg/trunk
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patch by Nicholas Tung, ntung ntung com
Originally committed as revision 8687 to svn://svn.ffmpeg.org/ffmpeg/trunk
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buf_size checks
Originally committed as revision 8677 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 8014 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 7587 to svn://svn.ffmpeg.org/ffmpeg/trunk
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and fix GPL/LGPL version mismatches.
Originally committed as revision 6577 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 5707 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 5697 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4842 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4749 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Steven Johnson (mplayer -at- sakuraindustries.com)
Originally committed as revision 4639 to svn://svn.ffmpeg.org/ffmpeg/trunk
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AVCodecContext dont randomize AVStream and break binary compatibility
Originally committed as revision 4453 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 4314 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 3239 to svn://svn.ffmpeg.org/ffmpeg/trunk
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