FFmpeg

Commit Graph

Author	SHA1	Message	Date
Carl Eugen Hoyos	f31bac596f	lavf/dss: Do not fail randomly if dss_sp input contains 0xff. Fixes decoding the sample from ticket #6072 with ffmpeg.	8 years ago
Carl Eugen Hoyos	f55da2200d	lavf/dss: Support version 3 files / files with larger header. Fixes ticket #6072.	8 years ago
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
Michael Niedermayer	111d79aa88	avformat/dss: implement seeking This assumes CBR (which is true for all samples i have) Previous version reviewed by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	626904b777	avformat/dss: set bitrate Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	5634ca6d37	avformat/dss: set packet duration Value taken from the decoder implementation Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	8064265a38	avformat/dss: correct sample rate Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	847daac5c0	avformat/dss: Set packet position correctly pos previously was set but then overwritten Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	be0cb7e053	avformat/dss: Use av_freep() to avoid leaving stale pointers in memory Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	b2bbe8298b	avformat/dss: Check sscanf() return value in dss_read_metadata_date() Fixes writing uninitialized values into metadata without error in case parsing fails Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Oleksij Rempel	062cd5a975	lavf: Add DSS demuxer Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Luca Barbato <lu_zero@gentoo.org> Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	10 years ago

15 Commits (a26367493c13058c5021ddef318da726b57ff4a2)