Intel(R) Media Driver for VAAPI

Introduction

The Intel(R) Media Driver for VAAPI is a new VA-API (Video Acceleration API) user mode driver supporting hardware accelerated decoding, encoding, and video post processing for GEN based graphics hardware.

License

The Intel(R) Media Driver for VAAPI is distributed under the MIT license with portions covered under the BSD 3-clause "New" or "Revised" License. You may obtain a copy of the License at:

https://opensource.org/licenses/MIT

&

https://opensource.org/licenses/BSD-3-Clause

Prerequisites

For Ubuntu 16.04 and above

# apt install autoconf libtool libdrm-dev xorg xorg-dev openbox libx11-dev libgl1-mesa-glx libgl1-mesa-dev

Equivalents for other distributions should work.

Dependencies

Libva - https://github.com/intel/libva

GmmLib - https://github.com/intel/gmmlib (please check https://github.com/intel/media-driver/wiki/Comparability-with-GmmLib)

Building

1. Build and install libva master
2. Get gmmlib and media repo and format the workspace folder as below (suggest the workspace to be a dedicated one for media driver build):

<workspace>
    |- gmmlib
    |- media-driver

$ mkdir <workspace>/build_media

$ cd <workspace>/build_media

$ cmake ../media-driver \
-DCMAKE_INSTALL_PREFIX=/usr \
-DMEDIA_VERSION="2.0.0" \
-DBUILD_ALONG_WITH_CMRTLIB=1 \
-DBS_DIR_GMMLIB=`pwd`/../gmmlib/Source/GmmLib/ \
-DBS_DIR_COMMON=`pwd`/../gmmlib/Source/Common/ \
-DBS_DIR_INC=`pwd`/../gmmlib/Source/inc/ \
-DBS_DIR_MEDIA=`pwd`/../media-driver

Alternatively, copy

<workspace>/media-driver/unified_cmake.sh

into

<workspace>/build_media

then run

$ ./unified_cmake.sh

$ make -j8

Install

$ sudo make install

This will install the following files (e.g. on Ubuntu):

-- Installing: /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
-- Installing: /etc/profile.d/intel-media.sh
-- Installing: /usr/lib/x86_64-linux-gnu/igfxcmrt64.so

For iHD_drv_video.so please export related LIBVA environment variables.

export LIBVA_DRIVERS_PATH=<path-contains-iHD_drv_video.so>
export LIBVA_DRIVER_NAME=iHD

Supported Platforms

BDW (Broadwell)

SKL (Skylake)

BXT (Broxton) / APL (Apollolake)

CNL (Cannonlake)

Supported Codecs

CODEC	BDW	SKL	BXT/APL	CNL
H.264	D/E	D/E	D/E	D/E
MPEG-2	D/E	D/E	D	D/E
VC-1	D	D	D	D
JPEG	D	D/E	D/E	D/E
VP8	D	D	D	D/E
HEVC		D/E	D/E	D/E
HEVC 10bit			D	D/E
VP9			D	D/E
VP9 10bit				D

Known Issues and Limitations

1. Intel(R) Media Driver for VAAPI is recommended to be built against gcc compiler v6.1 or later, which officially supported C++11.

2. SKL: Green or other incorrect color will be observed in output frames when using YV12/I420 as input format for csc/scaling/blending/rotation, etc. on Ubuntu 16.04 stock (with kernel 4.10). The issue can be addressed with the kernel patch: WaEnableYV12BugFixInHalfSliceChicken7 commit 0b71cea29fc29bbd8e9dd9c641fee6bd75f6827

3. APL: BRC functionalities requiring HuC for AVC low power encoding require 4.11 or later kernel to work.

4. CNL: Functionalities requiring HuC including AVC BRC for low power encoding, HEVC low power encoding, and VP9 low power encoding require the kernel patch for GuC support to work.

5. CNL: HEVC encoding does not support P frame.

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