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GStreamer multimedia framework
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ed13220: mpegvideometa: add meta transform function 18d5efd: codecparsers: jpeg: add some padding to ScanHdr struct 7a51722: codecparsers: jpeg: fix docs for table parsing functions 06b8ded: codecparsers: jpeg: fix validity checking of data parsed 387a39d: codecparsers: jpeg: fix up API db9d6a9: codecparsers: jpeg: tweak API a little bb6951e: codecparsers: jpeg: hide gst_jpeg_scan_for_marker_code() f33c30c: codecparsers: jpeg: fix and optimize scan for next marker code 4658c30: codecparsers: jpeg: fix calculation of segment size 759bcb9: codecparsers: jpeg: fix default Huffman tables generation b4811ee: codecparsers: jpeg: add JPEG bitstream parser 9422464: h264parse: fix typo in log message 9e793a0: h264parse: Move PAR calcs, and use them for stereoscopic half-aspect 77704ce: nalutils: trivial patch to check if 8bb9249: codecparsers: mpeg4: actually return full number of bits of resync marker 7862f95: Revert "codecparsers: remove ignored increment of return" 54017b1: h264parse: Add support for passing stereoscopic/multiview info 8667ee4: h264parse: Don't switch to passthrough on set_caps() Signed-off-by: Sreerenj Balachandran <sreerenj.balachandran@intel.com> |
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README |
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. * `vaapidecode' is used to decode JPEG, MPEG-2, MPEG-4:2, H.264 AVC, H.264 MVC, VP8, VC-1, WMV3 videos to VA surfaces, depending on the underlying hardware capabilities. This plugin is also able to implicitly download the decoded surface to raw YUV buffers. * `vaapiencode_<CODEC>' is used to encode into MPEG-2, H.264 AVC, H.264 MVC, JPEG, VP8 videos, depending on the actual value of <CODEC> (mpeg2, h264, etc.). 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 0.37 * JPEG, MPEG-2, MPEG-4, H.264 AVC, H.264 MVC, VP8 and VC-1 ad-hoc decoders * MPEG-2, H.264 AVC,H.264 MVC, JPEG and VP8 ad-hoc encoders * OpenGL rendering through VA/GLX or GLX texture-from-pixmap + FBO * 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 Reduction - Advanced deinterlacing: Motion-Adaptive, Motion-Compensated Requirements ------------ Software requirements * GStreamer 1.2.x (up to including GStreamer 1.6): libglib2.0-dev (>= 2.28) libgstreamer1.0-dev (>= 1.2.0) libgstreamer-plugins-base1.0-dev (>= 1.2.0) libgstreamer-plugins-bad1.0-dev (>= 1.2.0) * 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 (>= 0.95.0) Hardware requirements * AMD platforms with UVD2 (XvBA supported) * Intel Eaglelake (G45) * Intel Ironlake, Sandybridge, Ivybridge, Haswell and Broadwell (HD Graphics) * Intel BayTrail * Intel Poulsbo (US15W) * Intel Medfield or Cedar Trail * NVIDIA platforms with PureVideo (VDPAU supported) 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 ! vaapidecode ! vaapisink fullscreen=true * Play a raw MPEG-2 interlaced stream $ gst-launch-1.0 -v filesrc location=/path/to/mpeg2.bits ! \ mpegvideoparse ! vaapidecode ! 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 ! \ vaapiencode_h264 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://github.com/01org/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.