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	ce70f28a17	avpacket: Replace av_free_packet with av_packet_unref `av_packet_unref` matches the AVFrame ref-counted API and can be used as a drop in replacement. Deprecate `av_free_packet`.	9 years ago
Diego Biurrun	daf8cf358a	avformat: Don't anonymously typedef structs	10 years ago
Justin Ruggles	d4a105ae5c	gsmdec: set channel layout	12 years ago
Martin Storsjö	e6153f173a	avopt: Store defaults for AV_OPT_TYPE_INT in the i64 union member Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Anton Khirnov	36ef5369ee	Replace all CODEC_ID_* with AV_CODEC_ID_*	13 years ago
Anton Khirnov	f7fe41a04f	lavf: rename AVInputFormat.value to raw_codec_id. It's only used by raw demuxers for storing the codec id.	13 years ago
Anton Khirnov	6e9651d106	lavf: remove AVFormatParameters from AVFormatContext.read_header signature	13 years ago
Justin Ruggles	f01f6a8474	gsm demuxer: use generic seeking instead of a gsm-specific function. Since packets all contain only a single block, the generic seek function can be used while still maintaining block-accuracy.	13 years ago
Justin Ruggles	467879eb54	gsm demuxer: return packets with only 1 gsm block at a time. fixes stream copy of raw gsm to mov. tested with QuickTime.	13 years ago
Anton Khirnov	c3f9ebf743	lavf: make av_set_pts_info private. It's supposed to be called only from (de)muxers.	13 years ago
Justin Ruggles	894bc1d322	gsm demuxer: do not allocate packet twice. fixes memleak with raw gsm demuxing.	13 years ago
Justin Ruggles	87c57d807f	Create separate functions for the raw GSM demuxer. Put the new raw GSM demuxer in its own file. Fixes raw GSM demuxing.	13 years ago

13 Commits (575e31e931e4178e9f1e24407503c9b4ec0ef9ba)