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Commit Graph

18 Commits

Author SHA1 Message Date
Andreas Rheinhardt
d5a0eba8a2 av(format|device): Add const to muxer packet data pointers
The packets given to muxers need not be writable,
so it is best to access them via const uint8_t*.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-07-09 19:37:53 +02:00
James Almer
6f1a9effef sndio: convert to new channel layout API
Signed-off-by: James Almer <jamrial@gmail.com>
2022-03-15 09:42:37 -03:00
Andreas Rheinhardt
d92f38c179 avdevice: Constify all devices
This is possible now that the next-API is gone.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-27 11:48:05 -03:00
Marton Balint
4bb0409820 avdevice: migrate to AVFormatContext->url
Signed-off-by: Marton Balint <cus@passwd.hu>
2018-01-28 23:06:43 +01:00
Derek Buitenhuis
6f69f7a8bf Merge commit '9200514ad8717c63f82101dc394f4378854325bf'
* commit '9200514ad8717c63f82101dc394f4378854325bf':
  lavf: replace AVStream.codec with AVStream.codecpar

This has been a HUGE effort from:
    - Derek Buitenhuis <derek.buitenhuis@gmail.com>
    - Hendrik Leppkes <h.leppkes@gmail.com>
    - wm4 <nfxjfg@googlemail.com>
    - Clément Bœsch <clement@stupeflix.com>
    - James Almer <jamrial@gmail.com>
    - Michael Niedermayer <michael@niedermayer.cc>
    - Rostislav Pehlivanov <atomnuker@gmail.com>

Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
2016-04-10 20:59:55 +01:00
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.
2016-02-23 17:01:58 +01:00
Michael Niedermayer
b1b58310d0 Merge commit '8d26c193fb42d08602ac93ece039d4718d029adc'
* commit '8d26c193fb42d08602ac93ece039d4718d029adc':
  avdevice: Apply a more consistent file naming scheme

Conflicts:
	libavdevice/Makefile
	libavdevice/alsa.h
	libavdevice/alsa_dec.c
	libavdevice/alsa_enc.c
	libavdevice/sndio_enc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-09 21:36:42 +02:00
Michael Niedermayer
fe25194c58 Merge commit 'c201069fac9a76e6604f9d84d76a172434d62200'
* commit 'c201069fac9a76e6604f9d84d76a172434d62200':
  avdevice: Add missing header for NULL_IF_CONFIG_SMALL

Conflicts:
	libavdevice/alsa-audio-dec.c
	libavdevice/alsa-audio-enc.c
	libavdevice/pulse_audio_dec.c
	libavdevice/sndio_enc.c
	libavdevice/vfwcap.c
	libavdevice/x11grab.c
	libavdevice/xcbgrab.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-04-09 21:07:24 +02:00
Diego Biurrun
8d26c193fb avdevice: Apply a more consistent file naming scheme 2015-04-09 16:40:12 +02:00
Diego Biurrun
c201069fac avdevice: Add missing header for NULL_IF_CONFIG_SMALL
Also reshuffle headers into canonical order where appropriate.
2015-04-09 16:40:12 +02:00
Lukasz Marek
f607767d93 lavd: add categories to device implementations
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
2014-03-03 23:34:46 +01:00
Michael Niedermayer
7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 22:45:46 +02:00
Anton Khirnov
36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Reimar Döffinger
c673c90515 oss,sndio: simplify by using FFMIN.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-06-09 22:53:17 +02:00
Stefano Sabatini
6b899e16de lavdev: prefer the inclusion of avdevice.h over that of libavformat/avformat.h 2011-05-27 12:15:09 +02:00
Reimar Döffinger
e76c0c6a00 Simplify: Use FFMIN. 2011-03-29 20:18:45 +02:00
Stefano Sabatini
e93d97156d sndio: prefer "FFmpeg" over "Libav" in the license header 2011-03-28 22:50:09 +02:00
Brad
15d59d2cea sndio support for playback and record
Signed-off-by: Anton Khirnov <anton@khirnov.net>
2011-03-27 10:46:45 +02:00