X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=README;h=beb9a7e6dde85bcdcb769bee2c19314681ca8868;hb=1702e377131b700cb826f2f4a1c218c56fbaea0e;hp=7a333c9d51b452c8969921d689bfe836b568d14b;hpb=2531b21a72fb9a7052c1cd468aedb27fcecf7191;p=platform%2Fupstream%2Fgstreamer-vaapi.git diff --git a/README b/README index 7a333c9..beb9a7e 100644 --- a/README +++ b/README @@ -2,17 +2,16 @@ gstreamer-vaapi VA-API support to GStreamer - Copyright (C) 2010 Splitted-Desktop Systems + Copyright (C) 2010-2011 Splitted-Desktop Systems + Copyright (C) 2011-2014 Intel Corporation + Copyright (C) 2011 Collabora Ltd. License ------- -gstreamer-vaapi helper libraries are available under the terms of the -GNU Lesser General Public License v2.1+. - -gstreamer-vaapi plugin elements are available under the terms of the -GNU General Public License v2+. +gstreamer-vaapi helper libraries and plugin elements are available +under the terms of the GNU Lesser General Public License v2.1+ Overview @@ -21,23 +20,41 @@ Overview gstreamer-vaapi consists in a collection of VA-API based plugins for GStreamer and helper libraries. - * `vaapidecode' is used to decode MPEG-2, MPEG-4, H.264, VC-1, WMV3 - videos to video/x-vaapi-surfaces surfaces, depending on the - underlying HW capabilities. + * `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_' is used to encode into MPEG-2, H.264 AVC, + H.264 MVC videos, depending on the actual value of (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. - * `vaapiconvert' is used to convert from video/x-raw-yuv pixels to - video/x-vaapi-surface surfaces. + * `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 display video/x-vaapi-surface surfaces to - screen. + * `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 0.31 + * VA-API support from 0.29 to 0.35 + * JPEG, MPEG-2, MPEG-4, H.264 AVC, H.264 MVC, VP8 and VC-1 ad-hoc decoders + * MPEG-2, H.264 AVC and H.264 MVC 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 @@ -45,34 +62,85 @@ Requirements Software requirements - * libgstreamer0.10-dev >= 0.10.0 - * libgstreamer-plugins-base0.10-dev >= 0.10.16 - * libva-dev >= 0.31.0-1+sds9 (VA/GLX) - * libavcodec-dev >= 0.6 or with + * GStreamer 0.10.x [DEPRECATED]: + libglib2.0-dev (>= 2.28) + libgstreamer0.10-dev (>= 0.10.36) + or with GstBaseSink::query() + libgstreamer-plugins-base0.10-dev (>= 0.10.36) + libgstreamer-plugins-bad0.10-dev (>= 0.10.22.1) + or with GstVideoContext, GstSurfaceBuffer, codecparsers + + Note: support for GStreamer 0.10 APIs is deprecated and will be + removed in a future release. + + * GStreamer 1.0.x (up to including GStreamer 1.4): + libglib2.0-dev (>= 2.28) + libgstreamer1.0-dev (>= 1.0.0) + libgstreamer-plugins-base1.0-dev (>= 1.0.0) + libgstreamer-plugins-bad1.0-dev (>= 1.0.0) + + * 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 Poulsbo (US15W) * Intel Eaglelake (G45) - * Intel Ironlake (HD Graphics) + * Intel Ironlake, Sandybridge, Ivybridge and Haswell (HD Graphics) + * Intel Poulsbo (US15W) + * Intel Medfield or Cedar Trail * NVIDIA platforms with PureVideo (VDPAU supported) Usage ----- -The GStreamer pipeline currently has to be built manually. -i.e. neither decodebin{,2} nor playbin{,2} would select the VA-API -elements automatically. + VA elements are automatically plugged into GStreamer pipelines. So, + using playbin (or playbin2 with GStreamer 0.10) 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-0.10 -v filesrc location=/path/to/video.mp4 ! \ + $ 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 + -Caveats +Sources ------- - * No ad-hoc parser, vaapidecoder currently relies on FFmpeg - * MPEG-4 Part-2 (DivX) has decoding bugs + gstreamer-vaapi is Open Source software, so updates to this + framework are really easy to get. + + Stable source code releases can be found at: + + + Git repository for work-in-progress changes is available at: + + + +Reporting Bugs +-------------- + + Bugs can be reported in the GNOME Bugzilla system at: + + + From the main page, new bugs can be reported through New -> Other -> + gstreamer-vaapi product.