Skip to content
Permalink
Branch: master
Find file Copy path
Find file Copy path
executable file 234 lines (166 sloc) 11 KB

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. Build and install gmmlib master
  3. Get media repo and format the workspace folder as below (suggest the workspace to be a dedicated one for media driver build):
<workspace>
    |- media-driver
$ mkdir <workspace>/build_media
$ cd <workspace>/build_media
$ cmake ../media-driver
$ 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

Build Modes

This section summarizes key driver build modes which can be used in the different environment requirements:

Build option Default value Dependencies Comments
ENABLE_KERNELS ON N/A Enable/Disable shaders during driver build
ENABLE_NONFREE_KERNELS ON ENABLE_KERNELS=ON Enable/disable close source shaders (kernels) during the build
BUILD_KERNELS OFF ENABLE_KERNELS=ON, ENABLE_NONFREE_KERNELS=OFF If enabled, rebuild open source shaders (kernels) from sources. Requires ENABLE_NONFREE_KERNELS=OFF

With the above options it is possible to build (table assumes that non-listed options have default values):

No. Build option(s) HW Features Shaders (Kernels) Comments
1 ENABLE_KERNELS=ON Yes Close source (pre-built) Default, full feature driver
2 ENABLE_KERNELS=OFF Yes None HW features only, include HW decoder, HW VDEnc Encoder (CQP mode)
3 ENABLE_NONFREE_KERNELS=OFF Yes Open source (pre-built) HW features available in prev. mode (ENABLE_KERNELS=ON) and features supported by open source shaders
4 ENABLE_NONFREE_KERNELS=OFF BUILD_KERNELS=ON Yes Open source Same as ENABLE_NONFREE_KERNELS=OFF driver, but shaders are rebuilt from sources

Supported Platforms

BDW (Broadwell)

SKL (Skylake)

BXT (Broxton) / APL (Apollo Lake)

KBL (Kaby Lake)

CFL (Coffee Lake)

WHL (Whiskey Lake)

CNL (Cannonlake)

ICL (Ice Lake)

Default Driver Build Features

CODEC BDW SKL BXT/APL KBL CFL WHL CNL ICL*
AVC D/Es D/E/Es D/E/Es D/E/Es D/E/Es D/E/Es D/Es D/E/Es
MPEG-2 D/Es D/Es D D/Es D/Es D/Es D/Es D/Es
VC-1 D D D D D D D D
JPEG D D/E D/E D/E D/E D/E D/E D/E
VP8 D D D D D D/Es D/Es D/Es
HEVC 8bit D/Es D/Es D/Es D/Es D/Es D/Es D/E/Es
HEVC 10bit D D D D D/Es D/E/Es
VP9 8bit D D D D D D/E
VP9 10bit D D D D D/E

D - HW Decoding

E - HW Encoding

Es - HW + Shader Encoding

* ICL encoding is pending on i915 support on upstream, for more information, please check Known Issues and Limitations #5.

Video Processing BDW SKL BXT/APL KBL CFL WHL CNL ICL
Blending Y Y Y Y Y Y Y Y
CSC (Color Space Conversion) Y Y Y Y Y Y Y Y
De-interlace Y Y Y Y Y Y Y Y
De-noise Y Y Y Y Y Y Y Y
Luma Key Y Y Y Y Y Y Y Y
Mirroring Y Y Y Y Y Y Y Y
ProcAmp (brightness,contrast,hue,saturation) Y Y Y Y Y Y Y Y
Rotation Y Y Y Y Y Y Y Y
Scaling Y Y Y Y Y Y Y Y
Sharpening Y Y Y Y Y Y Y Y
STD/E (Skin Tone Detect & Enhancement) Y Y Y Y Y Y Y Y
TCC (Total Color Control) Y Y Y Y Y Y Y Y
Color fill Y Y Y Y Y Y Y Y
Chroma Siting Y Y Y Y Y Y Y
HDR10 Tone Mapping Y

For detail feature information, you can access Media Features.

HW Media Features

Media Features BDW SKL BXT/APL KBL CFL WHL CNL ICL
AVC D D D/E D/E D/E D/E D D/E
MPEG-2 D D D D D D D D
VC-1 D D D D D D D D
JPEG D D/E D/E D/E D/E D/E D/E D/E
VP8 D D D D D D D D
HEVC 8bit D D D D D D D/E
HEVC 10bit D D D D D D/E
VP9 8bit D D D D D D/E
VP9 10bit D D D D D/E

D - HW Decoding

E - HW Encoding, VDEnc CQP mode only, BRC mode is pending on i915 support on upstream.

Open Source Shader Media Features

Media Features BDW SKL BXT/APL KBL CFL WHL CNL ICL
Blending Y
CSC (Color Space Conversion) Y
De-interlace Y
Luma Key Y
Mirroring Y
ProcAmp (brightness,contrast,hue,saturation) Y
Rotation Y
Scaling Y
Sharpening Y
Color fill Y
Chroma Siting Y

Close Source Shader Media Codec Features

All Open Source Shaders listed in the previous paragraph are still available, but Close Source Media Codec Shaders provide few additional features listed below.

Encode Features BDW SKL BXT/APL KBL CFL WHL CNL ICL*
AVC Es Es Es Es Es Es Es Es
MPEG-2 Es Es Es Es Es Es Es
VP8 Es Es Es
HEVC 8bit Es Es Es Es Es Es Es
HEVC 10bit Es Es

Es - HW + Shader Encoding

* ICL encoding is pending on i915 support on upstream, for more information, please check Known Issues and Limitations #5.

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. HuC firmware is needed for AVC low power encoding bitrate control, including CBR, VBR, etc. As of now, HuC firmware support is disabled in Linux kernels by default. Please, refer to i915 kernel mode driver documentation to learn how to enable it. Mind that HuC firmware support presents in the following kernels for the specified platforms:

    • APL/KBL: starting from kernel 4.11
    • CFL: starting from kernel 4.15
  4. ICL: preliminary support and may not be fully functional. It requires Linux kernel 4.17+ loaded with i915.alpha_support=1 parameter to be tried.

  5. ICL encoding has two known issues:

(*) Other names and brands may be claimed as property of others.
You can’t perform that action at this time.