| Commit message (Collapse) | Author | Age |
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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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Bug-Id: CID 1238993
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Prefix the functions/tables brktimegm, pcm_read_seek,
dv_offset_reset, voc_get_packet, codec_movaudio_tags,
codec_movvideo_tags.
After this, lavf has no global symbols without the proper prefix.
Signed-off-by: Martin Storsjö <martin@martin.st>
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It's supposed to be called only from (de)muxers.
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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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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This prevents sending a packet with data=NULL size=AVERROR_EOF.
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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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AVIOContext.eof_reached should be used directly instead.
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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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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Originally committed as revision 24993 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24170 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Other parts of FFmpeg use NE (native endian) rather than ME (machine).
This makes it consistent.
Originally committed as revision 24169 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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Originally committed as revision 16684 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Patch by Diego 'Flameeyes' Pettenò: flameeyes gmail
Originally committed as revision 15517 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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Extracted from a patch by Erik Hovland, erik hovland org.
Originally committed as revision 13531 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 13098 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 10475 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 8276 to svn://svn.ffmpeg.org/ffmpeg/trunk
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AVERROR_ defines are moved to avcodec.h as they are needed in there as well. Feel free to move that to avutil/common.h.
Bumped up avcodec/format version numbers as though it's binary compatible we will want to rebuild apps as error values changed.
Please from now on use return AVERROR(EFOO) instead of the ugly return -EFOO in your code.
This also removes the need for berrno.h.
Originally committed as revision 7965 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 6774 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 5720 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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patch by Diego "Flameeyes" Petteno flameeyes AA gentoo PP org
Original thread:
Date: Jun 30, 2006 2:07 AM
Subject: [Ffmpeg-devel] [PATCH] Move initialisations and internal symbols in allformats.h
Originally committed as revision 5556 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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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 3607 to svn://svn.ffmpeg.org/ffmpeg/trunk
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courtesy of Konstantin Shishkov
Originally committed as revision 3529 to svn://svn.ffmpeg.org/ffmpeg/trunk
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