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
Vittorio Giovara	059a934806	lavc: Consistently prefix input buffer defines Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	10 years ago
James Almer	d34ec64a22	replace calls to url_feof() with avio_feof() Signed-off-by: James Almer <jamrial@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Paul B Mahol	eeadcdfd1a	LucasArts SMUSH demuxer Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	11 years ago
Paul B Mahol	a807c68253	avformat: use ff_alloc_extradata() Signed-off-by: Paul B Mahol <onemda@gmail.com>	11 years ago
Paul B Mahol	d98364edce	smush: check audio packet size Fixes null pointer dereference. Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	c4dd4f19f3	smush: improve probing Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Michael Niedermayer	59fdf543d5	smush: read subversion for version==1 too. This avoids a gcc warning, otherwise it should have no effect. its a bit more consistent too Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Paul B Mahol	30659a2233	smush: properly flag audio packets Signed-off-by: Paul B Mahol <onemda@gmail.com>	13 years ago
Paul B Mahol	3821632e1b	smush: set audio packet duration Signed-off-by: Paul B Mahol <onemda@gmail.com>	13 years ago
Paul B Mahol	bef8fd7099	LucasArts SMUSH demuxer Signed-off-by: Paul B Mahol <onemda@gmail.com>	13 years ago

14 Commits (4f96c11ed74342a88346fe7972c71514cc98b320)