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GStreamer multimedia framework
4f343f82e3
This patch adds the handling of VAEncMiscParameterTypeQualityLevel, in gstreamer-vaapi encoders: The encoding quality could be set through this structure, if the implementation supports multiple quality levels. The quality level set through this structure is persistent over the entire coded sequence, or until a new structure is being sent. The quality level range can be queried through the VAConfigAttribEncQualityRange attribute. A lower value means higher quality, and a value of 1 represents the highest quality. The quality level setting is used as a trade-off between quality and speed/power consumption, with higher quality corresponds to lower speed and higher power consumption. The quality level is set by the element's parameter "quality-level" with a hard-coded range of 1 to 8. Later, when the encoder is configured in run time, just before start processing, the quality level is scaled to the codec range. If VAConfigAttribEncQualityRange is not available in the used VA backend, then the quality level is set to zero, which means "disabled". All the available codecs now process this parameter if it is available. https://bugzilla.gnome.org/show_bug.cgi?id=778733 Signed-off-by: Víctor Manuel Jáquez Leal <vjaquez@igalia.com> |
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| gst | ||
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| .gitmodules | ||
| AUTHORS | ||
| autogen.sh | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING.LIB | ||
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| gstreamer-vaapi.doap | ||
| Makefile.am | ||
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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:
<https://gstreamer.freedesktop.org/src/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&component=gstreamer-vaapi>