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31 Commits

Author SHA1 Message Date
Anton Khirnov 9200514ad8 lavf: replace AVStream.codec with AVStream.codecpar 
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.
 2016-02-23 17:01:58 +01:00
Vittorio Giovara 1a3eb042c7 Replace av_dlog with normal av_log at trace level 
This applies to every library where performance is not critical.
 2015-04-19 12:41:59 +01:00
Vittorio Giovara e9ba309831 assdec: check av_new_packet return value 
CC: libav-stable@libav.org
Bug-Id: CID 703626
 2014-10-29 16:54:43 +00:00
Patrice Clement 5c9c305d14 ass: K&R formatting cosmetics 2014-03-02 13:23:13 +01:00
Diego Biurrun 8f8bc92365 Add missing #includes for *INT64_MAX and *INT64_C 2013-11-23 21:55:52 +01:00
Mans Rullgard 4cbae57cef assdec: fix qsort() callback signature 
This changes the event_cmp() function to the correct signature,
avoiding an ugly cast.

Signed-off-by: Mans Rullgard <mans@mansr.com>
 2012-10-27 18:26:28 +01:00
Diego Biurrun 72eaba5e4f avformat: Convert some commented-out printf/av_log instances to av_dlog 2012-10-01 10:24:28 +02:00
Anton Khirnov 36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Diego Biurrun 0177b7d23a Improve descriptiveness of a number of codec and container long names 2012-07-30 20:46:55 +02:00
Diego Biurrun 6774247a9d avformat: Drop pointless "format" from container long names 2012-07-30 13:59:06 +02:00
Anton Khirnov 6e9651d106 lavf: remove AVFormatParameters from AVFormatContext.read_header signature 2012-01-27 10:51:57 +01:00
Anton Khirnov c3f9ebf743 lavf: make av_set_pts_info private. 
It's supposed to be called only from (de)muxers.
 2011-11-30 20:34:45 +01:00
Anton Khirnov 3b3bbdd3e6 lavf,lavd: replace av_new_stream->avformat_new_stream part I. 
Trivial replacements with sed are done in this commit:
sed 's/av_new_stream(\([^)]*\), 0)/avformat_new_stream(\1, NULL)/'
 2011-10-19 17:02:11 +02:00
Mans Rullgard 0ebcdf5cda Do not include mathematics.h in avutil.h 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-07-03 21:42:06 +01:00
Anton Khirnov f5b386afab Reemove remaining uses of deprecated AVERROR_NOTSUPP. 2011-04-06 14:10:08 +02:00
Mans Rullgard 2912e87a6c Replace FFmpeg with Libav in licence headers 
Signed-off-by: Mans Rullgard <mans@mansr.com>
 2011-03-19 13:33:20 +00:00
Anton Khirnov 66e5b1df36 avio: deprecate url_feof 
AVIOContext.eof_reached should be used directly instead.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-03-07 17:20:31 -05:00
Anton Khirnov ae628ec1fd avio: rename ByteIOContext to AVIOContext. 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-02-20 08:37:15 -05:00
Diego Elio Pettenò c6610a216e Prefix all _demuxer, _muxer, _protocol from libavformat and libavdevice. 
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.
 2011-01-26 22:10:09 +00:00
Aurelien Jacobs 87d69d3232 use designated initializer in ASS (de)muxer 
Originally committed as revision 25868 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-12-04 00:37:53 +00:00
Aurelien Jacobs ac066b83e9 add seeking support in ASS demuxer 
Originally committed as revision 24578 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-29 22:10:22 +00:00
Aurelien Jacobs 8a810ccbba use return value of ff_get_line() 
Originally committed as revision 24402 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-21 21:41:46 +00:00
Aurelien Jacobs 7c89295145 move ff_get_line to aviobuf.c 
Originally committed as revision 24399 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-21 21:39:01 +00:00
Aurelien Jacobs 80769fb73f rename get_line to ff_get_line 
Originally committed as revision 24398 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-21 21:35:44 +00:00
Aurelien Jacobs 5c7ceef654 improve long_name for ass (de)muxer 
Originally committed as revision 24084 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-07-07 13:10:57 +00:00
Jean-Daniel Dupas cc947f04cc Replace all occurences of PKT_FLAG_KEY with AV_PKT_FLAG_KEY. 
Patch by Jean-Daniel Dupas, devlists shadowlab org

Originally committed as revision 22744 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-31 12:29:58 +00:00
Stefano Sabatini 72415b2adb Define AVMediaType enum, and use it instead of enum CodecType, which 
is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2010-03-30 23:30:55 +00:00
Michael Niedermayer 8ba311410a Silence "assdec.c:146: warning: passing argument 4 of ‘qsort’ from incompatible pointer type" 
The alternative (schoolbook) solution is less readable.

Originally committed as revision 17230 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-02-14 15:44:46 +00:00
Aurelien Jacobs 7a8b7634c5 assdec: don't remove CR, they are part of the spec 
Originally committed as revision 15442 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-27 23:12:24 +00:00
Michael Niedermayer 5c8a1d1927 Do not lose the '\n'. 
Originally committed as revision 15424 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-26 03:24:05 +00:00
Michael Niedermayer de3ae185a4 2 in 1, an ASS and SSA demuxer. 
Tested with -scodec copy on all ASS & SSA samples that i found on mphq (exactly 2).

Originally committed as revision 15422 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2008-09-26 02:19:21 +00:00