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
Luca Barbato	e579d8b29c	lavf: Dump the cpb side data information	9 years ago
Vittorio Giovara	5d3addb937	Add a quality factor packet side data This is necessary to preserve the quality information currently exported with coded_frame. Add the new side data to every encoder that needs it, and use it in avconv. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	10 years ago
Vittorio Giovara	df22e30172	dump: Use the correct abs() version Fix warning from clang "absolute value function 'abs' given an argument of type 'long long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value]".	10 years ago
Vittorio Giovara	6c8c7c2462	dump: Print AVAudioServiceType side data	10 years ago
Sylvain Rabot	167e6f1489	dump: Update streams and chapters printout format This matches the -map option which requires '%d:%d' format.	10 years ago
Vittorio Giovara	20a5956b8d	dump: split audio and video probing on multiple lines Also always report pixel format.	10 years ago
Vittorio Giovara	9301486408	avcodec: add stream-level stereo3d side data	10 years ago
Diego Biurrun	59ca29a560	dump: Use correct printf conversion specifiers for POSIX int types	11 years ago
Anton Khirnov	3f4edf0125	dump_stream: print the timebase as is, do not reduce it It makes more sense to print the timebase exactly as it is set. Also, this avoids a divide by zero when av_dump_format() is called on a format context before writing the header.	11 years ago
Vittorio Giovara	711aa2a827	lavf: dump stream side data when probing	11 years ago
Vittorio Giovara	2dc265619a	lavf: group dump functions together	11 years ago

12 Commits (8a02a8031ef4f98faf5647f0e01a8922247bf748)