GStreamer multimedia framework
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Víctor Manuel Jáquez Leal 0968ce468d plugins: create a GL context on certain conditions
If a GstVaapiDisplay is not found in the GStreamer context sharing,
then VAAPI elements look for a local GstGLContext in gst context
sharing mechanism ('gst.gl.local.context').

If this GstGLContext not found either then, only the VAAPI decoders
and the VAAPI post-processor, will try to instantiate a new
GstGLContext.

If a valid GstGLContext is received, then a new GstVaapiDisplay will
be instantiated with the platform, API and windowing specified by the
instantiated GstGLContext.

Original-Patch-By: Matt Fischer <matt.fischer@garmin.com>

https://bugzilla.gnome.org/show_bug.cgi?id=777409
2017-01-27 11:27:35 +01:00
common@39ac2f563e Automatic update of common submodule 2016-12-03 08:20:56 +01:00
docs docs: document environment variables 2016-10-27 13:09:21 +02:00
gst plugins: create a GL context on certain conditions 2017-01-27 11:27:35 +01:00
gst-libs vaapidecode: update internal decoder sink caps 2017-01-18 11:30:49 +01:00
m4 build: handle git ignore in m4 directory 2016-03-09 20:28:21 +01:00
tests test: elements: remove spurious linkage 2016-07-06 18:38:37 +02:00
.gitmodules common: use https protocol for common submodule 2016-11-26 11:27:28 +00:00
AUTHORS AUTHORS: Update 2015-12-07 12:47:04 +02:00
autogen.sh use gst-common submodule 2016-02-03 20:03:47 +01:00
ChangeLog Release 1.11.1 2017-01-12 16:27:12 +02:00
configure.ac Back to development 2017-01-12 16:33:13 +02:00
COPYING.LIB Relicense gst-libs/ code to LGPL v2.1+. 2010-09-20 12:55:42 +02:00
git.mk build: update git.mk 2016-05-06 12:16:44 +02:00
gstreamer-vaapi.doap Release 1.11.1 2017-01-12 16:27:12 +02:00
Makefile.am build: possibility to disable tests 2016-03-30 17:08:38 +02:00
NEWS Release 1.11.1 2017-01-12 16:27:12 +02:00
README docs: update README 2016-10-18 18:04:48 +02:00

  gstreamer-vaapi
  VA-API support to GStreamer

  Copyright (C) 2010-2011 Splitted-Desktop Systems
  Copyright (C) 2011-2014 Intel Corporation
  Copyright (C) 2011 Collabora Ltd.


License
-------

gstreamer-vaapi helper libraries and plugin elements are available
under the terms of the GNU Lesser General Public License v2.1+


Overview
--------

gstreamer-vaapi consists in a collection of VA-API based plugins for
GStreamer and helper libraries.

  * `vaapi<CODEC>dec' is used to decode JPEG, MPEG-2, MPEG-4:2, H.264
    AVC, H.264 MVC, VP8, VC-1, WMV3, HEVC videos to VA surfaces,
    depending on the actual value of <CODEC> and the underlying
    hardware capabilities.  This plugin is also able to implicitly
    download the decoded surface to raw YUV buffers.

  * `vaapi<CODEC>enc' is used to encode into MPEG-2, H.264 AVC, H.264
    MVC, JPEG, VP8, HEVC videos, depending on the actual value of
    <CODEC> (mpeg2, h264, etc.) and the hardware capabilities. By
    default, raw format bitstreams are generated, so the result may be
    piped to a muxer, e.g. qtmux for MP4 containers.

  * `vaapipostproc' is used to filter VA surfaces, for e.g. scaling,
    deinterlacing (bob, motion-adaptive, motion-compensated), noise
    reduction or sharpening. This plugin is also used to upload raw
    YUV pixels into VA surfaces.

  * `vaapisink' is used to render VA surfaces to an X11 or Wayland
    display. This plugin also features a "headless" mode (DRM) more
    suited to remote transcode scenarios, with faster throughput.


Features
--------

  * VA-API support from 0.29 to 0.38
  * JPEG, MPEG-2, MPEG-4, H.264 AVC, H.264 MVC, VP8, VC-1, HEVC and
    VP9 ad-hoc decoders
  * MPEG-2, H.264 AVC,H.264 MVC, JPEG, VP8 and HEVC ad-hoc encoders
  * OpenGL rendering through VA/GLX or GLX texture-from-pixmap + FBO
  * Support for EGL backend
  * Support for the Wayland display server
  * Support for headless decode pipelines with VA/DRM
  * Support for major HW video decoding solutions on Linux (AMD,
    Intel, NVIDIA)
  * Support for HW video encoding on Intel HD Graphics hardware
  * Support for VA Video Processing APIs (VA/VPP)
    - Scaling and color conversion
    - Image enhancement filters: Sharpening, Noise Reductio, Color
      Balance, Skin-Tone-Enhancement
    - Advanced deinterlacing: Motion-Adaptive, Motion-Compensated


Requirements
------------

Software requirements

  * GStreamer 1.9.x:
      libgstreamer1.0-dev (>= 1.9.x)
      libgstreamer-plugins-base1.0-dev (>= 1.9.x)
      libgstreamer-plugins-bad1.0-dev (>= 1.9.0)

  * Renderers:
      DRM: libva-dev (>= 1.1.0), libdrm-dev, libudev-dev
      X11: libva-dev (>= 1.0.1)
      GLX: libva-dev (>= 1.0.3)
      Wayland: libva-dev (>= 1.1.0), libwayland-dev (>= 1.0.2)

Hardware requirements

  * Intel Eaglelake (G45)
  * Intel Ironlake, Sandybridge, Ivybridge, Haswell, Broadwell,
    Skylake, etc. (HD Graphics)
  * Intel BayTrail, Braswell
  * Intel Poulsbo (US15W)
  * Intel Medfield or Cedar Trail
  * Hardware supported by Mesa VA gallium state-tracker


Usage
-----

  VA elements are automatically plugged into GStreamer pipelines. So,
  using playbin should work as is.
  However, here are a few alternate pipelines that could be manually
  constructed.

  * Play an H.264 video with an MP4 container in fullscreen mode
  $ gst-launch-1.0 -v filesrc location=/path/to/video.mp4 ! \
      qtdemux ! vaapidecodebin ! vaapisink fullscreen=true

  * Play a raw MPEG-2 interlaced stream
  $ gst-launch-1.0 -v filesrc location=/path/to/mpeg2.bits ! \
      mpegvideoparse ! vaapimpeg2dec ! vaapipostproc ! vaapisink

  * Convert from one pixel format to another, while also downscaling
  $ gst-launch-1.0 -v filesrc location=/path/to/raw_video.yuv ! \
      videoparse format=yuy2 width=1280 height=720 ! \
      vaapipostproc format=nv12 height=480 ! vaapisink

  * Encode a 1080p stream in raw I420 format into H.264
  $ gst-launch-1.0 -v filesrc location=/path/to/raw_video.yuv ! \
      videoparse format=i420 width=1920 height=1080 framerate=30/1 ! \
      vaapih264enc rate-control=cbr tune=high-compression ! \
      qtmux ! filesink location=/path/to/encoded_video.mp4


Sources
-------

  gstreamer-vaapi is Open Source software, so updates to this
  framework are really easy to get.

  Stable source code releases can be found at:
  <http://www.freedesktop.org/software/vaapi/releases/gstreamer-vaapi/>

  Git repository for work-in-progress changes is available at:
  <https://cgit.freedesktop.org/gstreamer/gstreamer-vaapi>


Reporting Bugs
--------------

  Bugs can be reported in the GNOME Bugzilla system at:
  <https://bugzilla.gnome.org/enter_bug.cgi?product=gstreamer-vaapi>

  From the main page, new bugs can be reported through New -> Other ->
  gstreamer-vaapi product.