GStreamer multimedia framework
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Víctor Manuel Jáquez Leal e519f2ea79 vaapipostproc: resize if negotiated and allocation caps are different
Since commit 859a2b2, in vaapidecode, allocation query can be different from
the negotiated caps.

When connecting the vaapidecoder to the vaapipostprocessor, the last one will
resize the frame to the negotiated, if and only if, some other parameter is
activated to avoid the passthrough. If it is not, the surface won't be mapped
into a image. If not, the image won't be resized and the output buffer would be
mapped.

This patch will break the passthrough if the allocation query is different
from the negotiation caps, forcing the resizing.

https://bugzilla.gnome.org/show_bug.cgi?id=765095
2016-04-22 17:07:53 +02:00
common@ac2f647695 Automatic update of common submodule 2016-04-14 10:04:47 +01:00
docs docs: generate vaapijpegdec documentation 2016-03-30 15:07:43 +02:00
gst vaapipostproc: resize if negotiated and allocation caps are different 2016-04-22 17:07:53 +02:00
gst-libs libs: fix deleting a GstVaapiCodedBufferPool object 2016-04-13 15:45:26 +02:00
m4 build: handle git ignore in m4 directory 2016-03-09 20:28:21 +01:00
tests tests: simple-encoder: fix build error 2016-02-15 18:20:44 +01:00
.gitmodules add gst-common submodule 2016-02-03 20:03:47 +01:00
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 1.8.0 2016-03-24 13:11:05 +02:00
configure.ac build: possibility to disable tests 2016-03-30 17:08:38 +02:00
COPYING.LIB Relicense gst-libs/ code to LGPL v2.1+. 2010-09-20 12:55:42 +02:00
git.mk build: use git.mk 2015-05-18 16:14:46 +02:00
gstreamer-vaapi.doap Release 1.8.0 2016-03-24 13:11:05 +02:00
Makefile.am build: possibility to disable tests 2016-03-30 17:08:38 +02:00
NEWS Release 1.8.0 2016-03-24 13:11:05 +02:00
README README: Update 2015-12-07 12:39:23 +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.

  * `vaapidecode' 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 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, HEVC 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 0.38
  * 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 1.4.x (up to including GStreamer 1.6):
      libglib2.0-dev (>= 2.32)
      libgstreamer1.0-dev (>= 1.4.0)
      libgstreamer-plugins-base1.0-dev (>= 1.4.0)
      libgstreamer-plugins-bad1.0-dev (>= 1.4.0)

  * 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

  * AMD platforms with UVD2 (XvBA supported)
  * Intel Eaglelake (G45)
  * Intel Ironlake, Sandybridge, Ivybridge, Haswell and Broadwell (HD Graphics)
  * Intel BayTrail, Braswell
  * 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.