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4df68163dc
Make sure GstVaapiVideoMemory allocates VA surface proxies from a pool stored in the parent VA memory allocator. This fixes the following scenario: - VA video buffer 1 is allocated from a buffer pool - Another video buffer is created, and inherits info from buffer 1 - Buffer 1 is released, thus pushing it back to the buffer pool - New buffer alloc request comes it, this yields buffer 1 back - At this stage, buffers 1 and 2 still share the same underlying VA surface, but buffer 2 was already submitted downstream for further processing, thus conflicting with additional processing we were about to perform on buffer 1. Maybe the core GstBufferPool implementation should have been fixed instead to actually make sure that the returned GstBuffer memory we found from the pool is writable? |
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gstreamer-vaapi
VA-API support to GStreamer
Copyright (C) 2010-2011 Splitted-Desktop Systems
Copyright (C) 2011-2013 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, H.264, VC-1,
WMV3 videos to video/x-vaapi-surfaces surfaces, depending on the
underlying HW capabilities.
* `vaapiupload' is used to convert from video/x-raw-yuv pixels to
video/x-vaapi-surface surfaces.
* `vaapidownload' is used to convert from video/x-vaapi-surface
surfaces to video/x-raw-yuv pixels.
* `vaapipostproc' is used to postprocess video/x-vaapi-surface
surfaces, for e.g. deinterlacing.
* `vaapisink' is used to display video/x-vaapi-surface surfaces to
screen.
Features
--------
* VA-API support from 0.29 to 0.32
* JPEG, MPEG-2, MPEG-4, H.264 and VC-1 ad-hoc decoders
* 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)
Requirements
------------
Software requirements
* GStreamer 0.10.x:
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
* GStreamer 1.0.x:
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 Eaglelake (G45)
* Intel Ironlake, Sandy Bridge and Ivy Bridge (HD Graphics)
* 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 playbin2 should work as is. However, here are a few alternate
pipelines constructed manually.
* Play an H.264 video with an MP4 container in fullscreen mode
$ gst-launch-0.10 -v filesrc location=/path/to/video.mp4 ! \
qtdemux ! vaapidecode ! vaapisink fullscreen=true
* Play a raw MPEG-2 interlaced stream
$ gst-launch-0.10 -v filesrc location=/path/to/mpeg2.bits ! \
mpegvideoparse ! vaapidecode ! vaapipostproc ! vaapisink
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.