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
Vittorio Giovara	f890677d05	Replace any remaining avpicture function with imgutils avpicture_get_size() -> av_image_get_buffer_size() Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	9 years ago
Vittorio Giovara	01bcc2d5c2	lavc: Drop deprecated destruct_packet related functions Deprecated in 10/2012.	9 years ago
Vittorio Giovara	40cf1bbacc	Deprecate avctx.coded_frame The rationale is that coded_frame was only used to communicate key_frame, pict_type and quality to the caller, as well as a few other random fields, in a non predictable, let alone consistent way. There was agreement that there was no use case for coded_frame, as it is a full-sized AVFrame container used for just 2-3 int-sized properties, which shouldn't even belong into the AVCodecContext in the first place. The appropriate AVPacket flag can be used instead of key_frame, while quality is exported with the new AVPacketSideData quality factor. There is no replacement for the other fields as they were unreliable, mishandled or just not used at all. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>	10 years ago
Luca Barbato	9a26ba9713	v4l2: Add support for h264	10 years ago
Luca Barbato	619d5e7db8	v4l2: Use the codec descriptor facility The encoder or decoder might be disabled but the format would be supported for at least remuxing.	10 years ago
Martin Storsjö	b776113e5d	v4l2: Unify one instance of reading/storing errno Signed-off-by: Martin Storsjö <martin@martin.st>	10 years ago
Luca Barbato	09f25533a5	v4l2: Preserve errno values av_log usually resets it.	10 years ago
Tristan Matthews	a1a259881f	v4l2: Use av_strerror Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	10 years ago
Gabriel Dume	f929ab0569	cosmetics: Write NULL pointer equality checks more compactly Signed-off-by: Diego Biurrun <diego@biurrun.de>	11 years ago
Rémi Denis-Courmont	71bf6b41d9	libavdevice: use avpriv_open() Signed-off-by: Anton Khirnov <anton@khirnov.net>	12 years ago
Diego Biurrun	7950e519bb	Disable deprecation warnings for cases where a replacement is available	12 years ago
Diego Biurrun	a5f8873620	silly typo fixes	12 years ago
Anton Khirnov	1afddbe59e	avpacket: use AVBuffer to allow refcounting the packets. This will allow us to avoid copying the packets in many cases. This breaks ABI.	12 years ago
Anton Khirnov	49dc82eef7	v4l2: do not assert on a value received from outside of Libav	12 years ago
Anton Khirnov	838b849e70	v4l2: set the average framerate instead of codec timebase. Codec timebase is supposed to be set by decoders only.	12 years ago
Anton Khirnov	246da0b135	v4l2: avoid pointless indirection. v4l2_read_header() does no cleanup, so it can return directly, without any need for goto.	12 years ago
Anton Khirnov	716d413c13	Replace PIX_FMT_* -> AV_PIX_FMT_*, PixelFormat -> AVPixelFormat	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>	12 years ago
Martin Storsjö	124134e424	avopt: Store defaults for AV_OPT_TYPE_CONST in the i64 union member Signed-off-by: Martin Storsjö <martin@martin.st>	12 years ago
Anton Khirnov	36ef5369ee	Replace all CODEC_ID_* with AV_CODEC_ID_*	13 years ago
Mans Rullgard	6501dcfb5e	Remove unnecessary inclusions of [sys/]time.h Signed-off-by: Mans Rullgard <mans@mansr.com>	13 years ago
Anton Khirnov	6e9651d106	lavf: remove AVFormatParameters from AVFormatContext.read_header signature	13 years ago
Luca Barbato	b6db385922	v4l2: use C99 struct initializer Remove some unneeded memsets.	13 years ago
Luca Barbato	0efd48dfd1	v4l2: poll the file descriptor Instead of busy waiting use poll();	13 years ago
Luca Barbato	b8c310cb0a	v4l2: support compressed formats Let pass the codec name to -pixel_format and introduce -input_format.	13 years ago
Janne Grunau	f13a9ca906	v4l2: use V4L2_FMT_FLAG_EMULATED only if it is defined V4L2_FMT_FLAG_EMULATED was added in 2.6.32.	13 years ago
Luca Barbato	a6a4793d04	v4l2: list available formats Make use of the experimental framesize enumeration ioctl if available.	13 years ago
Luca Barbato	cd2bbad303	v4l2: set the proper codec_tag Unbreak direct streamcopy.	13 years ago
Luca Barbato	eb89b4fc09	v4l2: refactor device_open Check capabilities directly in the function, further simplify the code.	13 years ago
Luca Barbato	246007d370	v4l2: simplify away io_method Only mmap is supported.	13 years ago
Luca Barbato	a896d7f45a	v4l2: cosmetics	13 years ago
Luca Barbato	21aa6ae4fb	v4l2: uniform and format options	13 years ago
Luca Barbato	af7123b2ad	v4l2: do not force interlaced mode Video4linux2 supports both interlaced and non-interlaced mode, do not ask for interlaced if not necessary.	13 years ago
Janne Grunau	1adba23cec	v4l2: remove unneded linux specific asm/types.h include	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
Reimar Döffinger	bb3244dee2	Replace all usage of strcasecmp/strncasecmp All current usages of it are incompatible with localization. For example strcasecmp("i", "I") != 0 is possible, but would break many of the places where it is used. Instead use our own implementations that always treat the data as ASCII. Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Anton Khirnov	3b3bbdd3e6	lavf,lavd: replace av_new_stream->avformat_new_stream part I. Trivial replacements with sed are done in this commit: sed 's/av_new_stream(\([^)]*\), 0)/avformat_new_stream(\1, NULL)/'	13 years ago
Anton Khirnov	145f741e11	AVOptions: rename FF_OPT_TYPE_* => AV_OPT_TYPE_*	13 years ago
Diego Biurrun	30b4ee7901	Use explicit struct initializers for AVOutputFormat/AVInputFormat declarations.	13 years ago
Anton Khirnov	c14fe6bc99	lavf,lavd: remove all usage of AVFormatParameters from demuxers. AVFormatParameters are converted into corresponding private options in av_open_input_file/stream() compat wrappers, so accessing them from demuxers is redundant.	14 years ago
Stefano Sabatini	41b68dce4d	lavdev: improve feedback in case of invalid frame rate/size Show the invalid string in the error message. While at it also prefer "Could not" over "Couldn't", plain forms are preferred over contractions (simplify readability, especially for non English-savvy people). Signed-off-by: Anton Khirnov <anton@khirnov.net>	14 years ago
Stefano Sabatini	e60068baeb	v4l2: prefer "framerate_q" over "fps" in v4l2_set_parameters() The variable is used for containing the parsed value of framerate, using a lexically consistent name eases readability/understanding. Signed-off-by: Anton Khirnov <anton@khirnov.net>	14 years ago
Luca Barbato	2c6fb9f032	v4l2: do not force NTSC as standard Setting a standard is meaningful only for analog capture devices.	14 years ago
Anton Khirnov	367732832f	lavf,lavc: free avoptions in a generic way. It's simpler and less error-prone. Fixes some memleaks along the way.	14 years ago
Anton Khirnov	a3b15e411d	fbdev,v4l2: remove some forgotten uses of AVFormatParameters.time_base.	14 years ago
Anton Khirnov	fefa67d536	v4l2: remove one forgotten use of AVFormatParameters.pix_fmt.	14 years ago
Anton Khirnov	c21324eeb6	v4l2: add a framerate private option.	14 years ago
Anton Khirnov	7a70e01b26	v4l2: don't leak video standard string on error.	14 years ago

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109 Commits (8a02a8031ef4f98faf5647f0e01a8922247bf748)