FFmpeg

1014MB

Tree: 3cda179f18

Author	SHA1	Message	Date
Hendrik Leppkes	7f549b8338	riff: don't overwrite bps from WAVEFORMATEX if EXTENSIBLE doesn't contain that data. According to the specification on the MSDN [1], 0 is valid for that particular field, and it should be ignored in that case. [1]: http://msdn.microsoft.com/en-us/library/windows/desktop/dd757714(v=vs.85).aspx Bug-Id: 950 Signed-off-by: Anton Khirnov <anton@khirnov.net>	13 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.	11 years ago
Vittorio Giovara	059a934806	lavc: Consistently prefix input buffer defines Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	10 years ago
Andreas Cadhalpun	f1bdc23437	riff: Validate bitrate	10 years ago
Luca Barbato	d80811c94e	riff: Use the correct logging context	10 years ago
Luca Barbato	1b4c468477	riff: Validate the wav header size before trying to parse it	10 years ago
Martin Storsjö	d07aa3f02b	riffdec: Add sanity checks for the sample rate This avoids a division by zero for G726. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>	11 years ago
Diego Biurrun	255d9c570e	riff: Move demuxing code to a separate file.	12 years ago

8 Commits (3cda179f180e48cda9afee9b1875f10e89a848a6)