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* lavf: replace AVStream.codec with AVStream.codecparAnton Khirnov2016-02-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* lavf: allow custom IO for all filesAnton Khirnov2016-01-24
| | | | | | | | | | | | | | Some (de)muxers open additional files beyond the main IO context. Currently, they call avio_open() directly, which prevents the caller from using custom IO for such streams. This commit adds callbacks to AVFormatContext that default to avio_open2()/avio_close(), but can be overridden by the caller. All muxers and demuxers using AVIO are switched to using those callbacks instead of calling avio_open()/avio_close() directly. (de)muxers that use the URLProtocol layer directly instead of AVIO remain unconverted for now. This should be fixed in later commits.
* segment: Check open_null_ctx() return valueVittorio Giovara2015-06-12
| | | | Reported-By: infer
* avformat: Don't anonymously typedef structsDiego Biurrun2015-02-14
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* segment: Check av_get_frame_filename() return valueVittorio Giovara2015-01-23
| | | | | CC: libav-stable@libav.org Bug-Id: CID 1265713
* segment: Fix the failure pathsLuca Barbato2015-01-07
| | | | | | | | | A failure in segment_end() or segment_start() would lead to freeing a dangling pointer and in general further calls to seg_write_packet() or to seg_write_trailer() would have the same faulty behaviour. CC: libav-stable@libav.org Reported-By: luodalongde@gmail.com
* lavf: Set the stream time base hint properly for chained muxersMartin Storsjö2014-10-06
| | | | | | | This avoids warnings about using the codec time base as time base hint. Signed-off-by: Martin Storsjö <martin@martin.st>
* cosmetics: Write NULL pointer inequality checks more compactlyGabriel Dume2014-08-15
| | | | Signed-off-by: Diego Biurrun <diego@biurrun.de>
* segment: Report the current media sequenceLuca Barbato2014-04-30
| | | | Useful for debugging mostly.
* segment: Add an option to prepend a string to the list entriesEnrique Arizón Benito2014-04-29
| | | | | | Useful to generate lists with absolute urls. Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
* hls, segment: fix splitting for audio-only streams.Anton Khirnov2013-04-27
| | | | CC:libav-stable@libav.org
* segment: fix NULL pointer dereference in seg_write_header()Xi Wang2012-11-14
| | | | | | | | Since the pointer `oc' is NULL, oc->oformat->name will cause a null pointer dereference. This patch changes it to seg->oformat->name. Signed-off-by: Xi Wang <xi.wang@gmail.com> Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: support applehttp style listLuca Barbato2012-10-10
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* segment: drop global headers settingLuca Barbato2012-10-08
| | | | | | | | avconv provides an option to set it externally and there isn't a way for the outer demuxer to report the inner demuxer flag. Solves a bad interaction between mpegts and x264, but requires additional setting for the user.
* segment: Add comments about calls that only are relevant for some muxersMartin Storsjö2012-10-04
| | | | Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Add an option for omitting the first header and final trailerMartin Storsjö2012-10-04
| | | | | | | This allows writing totally bare segments, without any header/trailer included anywhere. Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Flush buffered data before finishing a segmentMartin Storsjö2012-10-04
| | | | | | | This makes sure any buffered data is written to the segment, for muxers that buffer up data internally (e.g. fragmented mp4). Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Set the resend_headers flag for each segmentMartin Storsjö2012-10-04
| | | | | | | | | This makes sure new inline headers are emitted when the next packet is written. This allows segmenting mpegts without calling write_header/write_trailer (nor freeing/reiniting the muxer) for each segment. Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Add an option for disabling writing of a header/trailer to each segmentMartin Storsjö2012-10-04
| | | | | | | | Some segmented formats (such as fragmented mp4) are "bare", as in, the segment files do not have the same headers/trailers as full normal files of that format have. Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Free and reinit the muxer before calling avformat_write_headerMartin Storsjö2012-10-04
| | | | | | | | | | | | This makes sure the muxers are set up in the way they expect with no data left around from the previous run (which could cause various issues including memory leaks, depending on the chaine muxer). This fixes memory leaks with the mpegts and flv muxers. It also makes the usage of chained muxers correct. Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Use the public av_write_header/av_write_trailer functionsMartin Storsjö2012-10-04
| | | | | | | | | With this change, the segmenter muxer doesn't rely on anything not available/supported to libavformat external users, making the segmenter muxer do things just like a normal segmenter application using libavformat would do. Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Properly create new AVStreams for the chained muxerMartin Storsjö2012-10-04
| | | | | | | | | Before, the chained muxer reused the AVStreams array from the outer muxer, which made it impossible to use the proper public functions (such as av_write_frame) when calling the chained muxer. Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Add a missing spaceMartin Storsjö2012-10-04
| | | | Signed-off-by: Martin Storsjö <martin@martin.st>
* segment: Pass the interrupt callback on to the chained AVFormatContext, tooMartin Storsjö2012-10-02
| | | | | | | | This might not be needed at the moment, but it's good practice to pass it to all chained AVFormatContexts, if it would happen to be used there at a later point. Signed-off-by: Martin Storsjö <martin@martin.st>
* avopt: Store defaults for AV_OPT_TYPE_INT in the i64 union memberMartin Storsjö2012-09-04
| | | | Signed-off-by: Martin Storsjö <martin@martin.st>
* Improve descriptiveness of a number of codec and container long namesDiego Biurrun2012-07-30
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* segment: remove unnecessary <strings.h> includeJanne Grunau2012-06-15
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* segment: reorder seg_write_header allocationLuca Barbato2012-04-27
| | | | | As pointed by Paul B Mahol <onemda@gmail.com> the previous code could lead to null pointer dereference.
* segment: implement wrap aroundLuca Barbato2012-02-28
| | | | | | | | Provide a way to wrap around the segment index so pseudostreaming live through a web server and html5 browser is simpler. Also ensure that 0 (disable) is a valid value across the options providing wrap around.
* segment: introduce segmented chain muxerLuca Barbato2011-12-19
It behaves similarly to image2 muxer
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