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Jorge Ramirez-Ortiz 1ef7752d64 libavcodec: v4l2: add support for v4l2 mem2mem codecs 
This patchset enhances Alexis Ballier's original patch and validates
    it using Qualcomm's Venus hardware (driver recently landed upstream
    [1]).

    This has been tested on Qualcomm's DragonBoard 410c and 820c
    Configure/make scripts have been validated on Ubuntu 10.04 and
    16.04.

    Tested decoders:
           - h264
           - h263
           - mpeg4
           - vp8
           - vp9
           - hevc

    Tested encoders:
           - h264
           - h263
           - mpeg4

    Tested transcoding (concurrent encoding/decoding)

    Some of the changes introduced:
        - v4l2: code cleanup and abstractions added
        - v4l2: follow the new encode/decode api.
        - v4l2: fix display size for NV12 output pool.
        - v4l2: handle EOS (EPIPE and draining)
        - v4l2: vp8 and mpeg4 decoding and encoding.
        - v4l2: hevc and vp9 support.
        - v4l2: generate EOF on dequeue errors.
        - v4l2: h264_mp4toannexb filtering.
        - v4l2: fixed make install and fate issues.
        - v4l2: codecs enabled/disabled depending on pixfmt defined
        - v4l2: pass timebase/framerate to the context
        - v4l2: runtime decoder reconfiguration.
        - v4l2: add more frame information
        - v4l2: free hardware resources on last reference being released
        - v4l2: encoding: disable b-frames for upstreaming (patch required)

    [1] https://lwn.net/Articles/697956/

    System Level view:
        v42l_m2m_enc/dec --> v4l2_m2m --> v4l2_context --> v4l2_buffers

    Reviewed-by: Jorge Ramirez <jorge.ramirez-ortiz@linaro.org>
    Reviewed-by: Alexis Ballier <aballier@gentoo.org>
    Tested-by: Jorge Ramirez <jorge.ramirez-ortiz@linaro.org>

Signed-off-by: wm4 <nfxjfg@googlemail.com>
2017-09-23 08:47:52 +02:00
compat compat/cuda/ptx2c: strip CR from each line 2017-08-30 11:20:34 +02:00
doc Fix several typos 2017-09-21 16:17:02 -08:00
ffbuild build: Skip generating .version files when cleaning 2017-09-10 01:22:57 -03:00
libavcodec libavcodec: v4l2: add support for v4l2 mem2mem codecs 2017-09-23 08:47:52 +02:00
libavdevice Remove some unneeded casts of bit_rate. 2017-09-22 01:33:22 +02:00
libavfilter avfilter/thumbnail_cuda: add cuda thumbnail filter 2017-09-22 11:54:35 +02:00
libavformat avformat/gif: use av_packet_alloc() 2017-09-23 02:18:47 -03:00
libavresample build: Generalize yasm/nasm-related variable names 2017-06-21 17:00:29 -03:00
libavutil pixdesc: Add API to map color property names to enum values 2017-09-21 13:33:29 +02:00
libpostproc postproc: remove usage of deprecated QP_STORE_T define 2017-08-30 14:44:27 -03:00
libswresample swresample/resample: Fix flush refelction length 2017-08-16 00:54:17 +02:00
libswscale Fix several typos 2017-09-21 16:17:02 -08:00
presets presets: remove moldering iPod presets 2014-06-17 16:15:04 -08:00
tests fate: add mxf_dv25/dvcpro50 regression tests 2017-09-18 08:56:52 +02:00
tools build: Generalize yasm/nasm-related variable names 2017-06-21 17:00:29 -03:00
.gitattributes fate: add SCC test 2017-01-27 17:06:42 +01:00
.gitignore build: add support for building .cu files via nvcc 2017-05-15 11:46:50 +02:00
.travis.yml build: Prefer NASM assembler over YASM 2017-06-21 17:00:30 -03:00
Changelog libavcodec: v4l2: add support for v4l2 mem2mem codecs 2017-09-23 08:47:52 +02:00
cmdutils_opencl.c cmdutils_opencl: Fix read of uinitialized cl_mem 2017-05-11 13:02:12 +02:00
cmdutils.c avformat, ffmpeg: deprecate old rotation API 2017-03-27 13:20:27 +02:00
cmdutils.h Merge commit '122de16dd8108a59a55d30543c9f28b5f61b02d1' 2017-05-05 14:04:30 +02:00
configure libavcodec: v4l2: add support for v4l2 mem2mem codecs 2017-09-23 08:47:52 +02:00
CONTRIBUTING.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
COPYING.GPLv2
COPYING.GPLv3
COPYING.LGPLv2.1 cosmetics: Delete empty lines at end of file. 2012-02-09 12:26:45 +01:00
COPYING.LGPLv3
CREDITS CREDITS: redirect to Git log, remove current outdated content 2013-01-31 18:02:52 +01:00
ffmpeg_cuvid.c ffmpeg_cuvid: adapt for recent filter graph initialization changes 2017-03-03 08:45:43 +01:00
ffmpeg_filter.c ffmpeg: Support setting the hardware device to use when filtering 2017-06-14 22:27:07 +01:00
ffmpeg_hw.c avconv_hw: Free device on initialisation failure 2017-06-18 17:07:25 +01:00
ffmpeg_opt.c ffmpeg_opt: add proper deprecation guards to lowres code 2017-08-30 22:45:00 -03:00
ffmpeg_qsv.c ffmpeg: init filtergraphs only after we have a frame on each input 2017-03-03 08:45:43 +01:00
ffmpeg_videotoolbox.c ffmpeg_videotoolbox: fix usage of av_get_codec_tag_string() 2017-03-29 14:49:29 +02:00
ffmpeg.c ffmpeg: send EOF pts to filters. 2017-09-08 10:31:07 +02:00
ffmpeg.h dxva: add support for new dxva2 and d3d11 hwaccel APIs 2017-06-27 18:05:02 +02:00
ffplay.c ffplay: add support for more SDL pixel formats when rendering video 2017-08-10 22:08:40 +02:00
ffprobe.c ffprobe: use consistent string for unspecified color_range value 2017-09-07 13:26:44 +02:00
ffserver_config.c ffserver_config: Check for failure to allocate FFServerIPAddressACL 2016-12-22 19:23:08 +01:00
ffserver_config.h ffsrever: Make the status page bitexact if any stream is bitexact 2016-11-29 19:26:26 +01:00
ffserver.c Remove some unneeded casts of bit_rate. 2017-09-22 01:33:22 +02:00
INSTALL.md INSTALL: add markdown syntax 2014-05-28 22:38:38 +02:00
LICENSE.md Merge commit '4fef648d10bf3bcfd4b8fa5755c1128966a2427c' 2017-03-15 22:07:47 +01:00
MAINTAINERS MAINTAINERS: modify the hlsenc description 2017-09-21 23:08:55 +08:00
Makefile dxva: add support for new dxva2 and d3d11 hwaccel APIs 2017-06-27 18:05:02 +02:00
README.md Add CONTRIBUTING.md 2016-09-18 10:02:13 +01:00
RELEASE Bump minor versions for master after release/3.3 branchpoint 2017-03-31 13:21:06 +02:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • ffserver is a multimedia streaming server for live broadcasts.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.