FFmpeg

449MB

Tree: 82b7525173

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.	11 years ago
Anton Khirnov	1b5d065ca7	pmpdec: check that there is at least one audio packet. The code cannot handle there being none, but that should not happen for valid files. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC:libav-stable@libav.org	11 years ago
Diego Biurrun	a5f8873620	silly typo fixes	12 years ago
Anton Khirnov	36ef5369ee	Replace all CODEC_ID_* with AV_CODEC_ID_*	12 years ago
Diego Biurrun	6774247a9d	avformat: Drop pointless "format" from container long names	13 years ago
Anton Khirnov	6e9651d106	lavf: remove AVFormatParameters from AVFormatContext.read_header signature	13 years ago
Anton Khirnov	74e96eb77e	pmpdec: don't use deprecated av_set_pts_info.	13 years ago
Reimar Döffinger	f28070a123	Add PlayStation Portable PMP format demuxer Not yet complete, for demuxing AAC the AAC header must be generated manually. Possibly the decoder could accept the header as extradata to simplify this. Signed-off-by: Anton Khirnov <anton@khirnov.net>	14 years ago

8 Commits (82b7525173f20702a8cbc26ebedbf4b69b8fecec)