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21 Commits

Author SHA1 Message Date
Diego Biurrun 67deba8a41 Use avpriv_report_missing_feature() where appropriate 2016-11-08 17:54:34 +01:00
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
Diego Biurrun daf8cf358a avformat: Don't anonymously typedef structs 2015-02-14 10:13:47 -08:00
Justin Ruggles 444b79c18a qcp: set channel layout 2012-11-12 10:33:21 -05:00
Anton Khirnov 36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +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 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
Anton Khirnov c10731e78b lavf: deprecate AVFormatContext.file_size 
It's too unreliable to be useful. avio_size() should be called instead.
 2011-10-17 08:25:38 +02:00
Diego Biurrun bee6d2fd76 doxygen: replace @sa tag by the more readable but equivalent @see 2011-07-15 02:01:22 +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 45a8a02a41 lavf: replace avio_seek(SEEK_CUR) with avio_skip where it makes sense 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-03-16 22:24:51 -04:00
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 a2704c9712 avio: add avio_tell macro as a replacement for url_ftell 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-03-04 11:26:57 -05:00
Anton Khirnov e356fc57a2 lavf: replace all uses of url_fskip with avio_seek 
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
 2011-03-01 12:22:16 -05:00
Anton Khirnov b7effd4e83 avio: avio_ prefixes for get_* functions 
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>
 2011-02-21 11:23:22 -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
Diego Biurrun ba87f0801d Remove explicit filename from Doxygen @file commands. 
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
 2010-04-20 14:45:34 +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
Kenan Gillet cdce0fb845 Add QCP demuxer. 
Originally committed as revision 18883 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2009-05-20 17:19:39 +00:00