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
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
Diego Biurrun	d92024f18f	lavf: more correct printf format specifiers	11 years ago
Diego Biurrun	1ecdf8912b	avformat: av_log_ask_for_sample() ---> avpriv_request_sample()	12 years ago
Diego Biurrun	f3298f1299	Return proper error code after av_log_ask_for_sample()	12 years ago
Paul B Mahol	c39fb30816	smjpegdec: set nb_frames for video stream Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	6571833d1a	smjpegdec: use url_feof() Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Mans Rullgard	366484fff1	smjpeg: fix type of 'ret' variable in smjpeg_read_packet() The 'ret' variable is used for negative error codes so it should be a signed type. Signed-off-by: Mans Rullgard <mans@mansr.com>	12 years ago
Paul B Mahol	8fbe11e623	Replace Libav with FFmpeg in license headers for files created by me Signed-off-by: Paul B Mahol <onemda@gmail.com>	13 years ago
Paul B Mahol	1c77a5307f	smjpegdec: implement seeking Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Diego Biurrun <diego@biurrun.de>	13 years ago
Anton Khirnov	6e9651d106	lavf: remove AVFormatParameters from AVFormatContext.read_header signature	13 years ago
Paul B Mahol	68b94f8bc3	avformat: split out common SMJPEG code This is a preparation for adding SMJPEG muxer. Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>	13 years ago
Paul B Mahol	b5aecc6bc0	avformat: Add SMJPEG demuxer. Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Anton Khirnov <anton@khirnov.net>	13 years ago
Paul B Mahol	a4209ad631	lavf: Add SMJPEG demuxer. Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago

17 Commits (c0628919b8c5761d64b1169e8de7584544d15ebf)