FFmpeg

Commit Graph

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.	9 years ago
wm4	9deaec7828	lavf: move internal fields from public to internal context This is not an API change; the fields were explicitly declared private before. Signed-off-by: Anton Khirnov <anton@khirnov.net>	10 years ago
Lukasz Marek	4d09bc9897	lavf/pcm: remove redundant check Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Paul B Mahol	8ca8b43d71	lavf/pcm: check size, do not produce invalid packets Inspired by `92b8c9d89e`. Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	93dc8ed0a1	pcmdec: move read_packet function to pcm.c so it can be shared with other demuxers While here remove pts/dts code, it is apparently not needed and cause problems for demuxers that will use such function. Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Martin Storsjö	167f3b8de7	libavformat: Add an ff_ prefix to some lavf internal symbols 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>	13 years ago
Mans Rullgard	0ebcdf5cda	Do not include mathematics.h in avutil.h Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Mans Rullgard	2912e87a6c	Replace FFmpeg with Libav in licence headers Signed-off-by: Mans Rullgard <mans@mansr.com>	14 years ago
Anton Khirnov	f59d8ff8cd	avio: avio_ prefix for url_fseek Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com> (cherry picked from commit `6b4aa5dac8`)	14 years ago
Anton Khirnov	6b4aa5dac8	avio: avio_ prefix for url_fseek Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>	14 years ago
Aurelien Jacobs	e94204dfd8	move pcm demuxers to their own file Originally committed as revision 24993 to svn://svn.ffmpeg.org/ffmpeg/trunk	15 years ago

15 Commits (a165b53daa8a3a526d2328ca72c4aa9e7f163045)