zywu/media-driver

# 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 [MIT](https://opensource.org/licenses/MIT) & [BSD-3-Clause](https://opensource.org/licenses/BSD-3-Clause)

## Prerequisites

For Ubuntu 16.04+

```
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 [comparability with GmmLib](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
```
4. Create build_media new folder under your workspace
```
$ mkdir <workspace>/build_media
```
then the workspace looks like below
```
<workspace>
 |- media-driver
 |- build_media
```
5. 
```
$ cd <workspace>/build_media
```
6. 
```
$ cmake ../media-driver
```
7. 
```
$ make -j"$(nproc)"
```

## 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 (Apollo Lake)
* KBLx (KBL/Kaby Lake; CFL/Coffe Lake; WHL/Whiskey Lake; CML/Comet Lake; AML/Amber Lake)
* ICL (Ice Lake)
* JSL (Jasper Lake)/EHL (Elkhart Lake)
* TGL (Tiger Lake)
* DG1/SG1

## Components and Features

Media driver contains three components as below
* **Video decoding** calls hardware-based decoder([VDBox](https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-kbl-vol08-media_vdbox.pdf))  which provides fully-accelerated hardware video decoding to release the graphics engine for other operations.
* **Video encoding** supports two modes, one calls hardware-based encoder([VDEnc](https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-kbl-vol08-media_vdbox.pdf)/[Huc](https://01.org/linuxgraphics/downloads/firmware?langredirect=1)) to provide low power encoding, another one is hardware([PAK](https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-kbl-vol08-media_vdbox.pdf))+shader(media kernel+[VME](https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-kbl-vol04-configurations.pdf)) based encoding. User could choose the mode through VA-API.
* **Video processing** supports several popular features by hardware-based video processor([VEBox/SFC](https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-kbl-vol09-media_vebox.pdf)) and shader(media kernel) based solution together.

Media driver supports two build types as below
* **Full Feature Build** is default driver build, which supports all feature by hardware accelerator and close source shaders(media kernel binaries). Ubuntu [intel-media-va-driver-non-free](https://packages.ubuntu.com/disco/intel-media-va-driver-non-free) package is generated from this build type.
* **Free Kernel Build**, enables fully open source shaders(media kernels) and hardware features but the features would be limited. Ubuntu [intel-media-va-driver](https://packages.ubuntu.com/disco/intel-media-va-driver) package is generated from this build type.

### Decoding/Encoding Features

|CODEC | Build Types | BDW | SKL | BXT/APL | KBLx | ICL | EHL/JSL | TGL/RKL/ADL-S/ADL-P| DG1/SG1 |
|---|---|---|---|---|---|---|---|---|---|
| AVC | Full-Feature Free-Kernel | D/Es D | D/E/Es D/E | D/E/Es D/E | D/E/Es D/E | D/E/Es D/E | D/E D/E | D/E/Es D/E | D/E/Es D/E |
| MPEG-2 | Full-Feature Free-Kernel | D/Es D | D/Es D | D D | D/Es D | D/Es D | D D | D/Es D | D/Es D |
| VC-1 | Full-Feature Free-Kernel | D &nbsp; | D &nbsp; | D &nbsp; | D &nbsp; | D &nbsp; | D &nbsp; | D &nbsp; | D &nbsp; |
| JPEG | Full-Feature Free-Kernel | D D | D/E D/E | D/E D/E | D/E D/E | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| VP8 | Full-Feature Free-Kernel | D D | D D | D D | D/Es D | D/Es D | D D | D* D* | |
| HEVC 8bit | Full-Feature Free-Kernel | | D/Es D | D/Es D | D/Es D | D/E/Es D/E | D/E D/E | D/E/Es D/E | D/E/Es D/E |
| HEVC 8bit 422 | Full-Feature Free-Kernel | | | | | D/Es D | D D | D/Es D | D/Es D |
| HEVC 8bit 444 | Full-Feature Free-Kernel | | | | | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| HEVC 10bit | Full-Feature Free-Kernel | | | D D | D/Es D | D/E/Es D/E | D/E D/E | D/E/Es D/E | D/E/Es D/E |
| HEVC 10bit 422 | Full-Feature Free-Kernel | | | | | D/Es D | D D | D/Es D | D/Es D |
| HEVC 10bit 444 | Full-Feature Free-Kernel | | | | | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| HEVC 12bit | Full-Feature Free-Kernel | | | | | | | D/Es D | D/Es D |
| HEVC 12bit 422 | Full-Feature Free-Kernel | | | | | | | D D | D D |
| HEVC 12bit 444 | Full-Feature Free-Kernel | | | | | | | D D | D D |
| VP9 8bit | Full-Feature Free-Kernel | | | D D | D D | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| VP9 8bit 444 | Full-Feature Free-Kernel | | | | | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| VP9 10bit | Full-Feature Free-Kernel | | | | D D | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| VP9 10bit 444 | Full-Feature Free-Kernel | | | | | D/E D/E | D/E D/E | D/E D/E | D/E D/E |
| VP9 12bit | Full-Feature Free-Kernel | | | | | | | D D | D D |
| VP9 12bit 444 | Full-Feature Free-Kernel | | | | | | | D D | D D |
| AV1 8bit | Full-Feature Free-Kernel | | | | | | | D D** | D D** |
| AV1 10bit | Full-Feature Free-Kernel | | | | | | | D D** | D D** |

* D  - Hardware Decoding
* E  - Hardware Encoding, Low Power Encoding(VDEnc/Huc)
* Es - Hardware(PAK) + Shader(media kernel+VME) Encoding

\* VP8 decoding is only supported on TGL platform

\** AV1 film grain kernel is not open source yet which doesn't necessarily match the libaom algorithm or film grain synthesis.

For more information, please refer to
* [Media Features Summary](https://github.com/intel/media-driver/blob/master/docs/media_features.md#media-features-summary)
    * [Supported Decoding Output Format and Max Resolution](https://github.com/intel/media-driver/blob/master/docs/media_features.md#supported-decoding-output-format-and-max-resolution)
    * [Supported Encoding Input Format and Max Resolution](https://github.com/intel/media-driver/blob/master/docs/media_features.md#supported-encoding-input-format-and-max-resolution)

### Video Processing Features

| Features | Build Types | BDW | SKL | BXT/APL | KBLx | ICL | EHL/JSL | TGL/RKL/ADL-S/ADL-P | DG1/SG1 |
|---|---|---|---|---|----|---|---|---|---|
| Blending | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| CSC (Color Space Conversion) | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| De-interlace | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes* Yes* | Yes Yes | Yes Yes |
| De-noise | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | No &nbsp; | Yes &nbsp; | Yes &nbsp; |
| Luma Key | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| Mirroring | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| ProcAmp (brightness,contrast,hue,saturation) | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| Rotation | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| Scaling | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| Sharpening | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| STD/E (Skin Tone Detect & Enhancement) | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | No &nbsp; | Yes &nbsp; | Yes &nbsp; |
| TCC (Total Color Control) | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | No &nbsp; | Yes &nbsp; | Yes &nbsp; |
| Color fill | Full-Feature Free-Kernel | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| Chroma Siting | Full-Feature Free-Kernel | &nbsp; &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes &nbsp; | Yes Yes | Yes Yes | Yes Yes | Yes Yes |
| HDR10 Tone Mapping | Full-Feature Free-Kernel | &nbsp; &nbsp; | &nbsp; &nbsp; | &nbsp; &nbsp; | &nbsp; &nbsp; | Yes &nbsp; | No &nbsp; | Yes &nbsp; | Yes &nbsp; |

\* EHL/JSL only support BOB DI

For more feature information, please refer to [Supported video processing csc/scaling format](https://github.com/intel/media-driver/blob/master/docs/media_features.md#supported-video-processing-cscscaling-format)

### Build Options

Media-driver supports few build types as described below. You could refer to
the following settings to enable them.
* **Full Feature Build**: ENABLE_KERNELS=ON(Default) ENABLE_NONFREE_KERNELS=ON(Default)
* **Free Kernel Build**: ENABLE_KERNELS=ON ENABLE_NONFREE_KERNELS=OFF
    * If trying to use pre-built open source kernel binaries, please add BUILD_KERNELS=OFF(Default).
    * If trying to rebuild open source kernel from source code, please add BUILD_KERNELS=ON.

Media-driver requires special i915 kernel mode driver (kmd) version to support the following
new platforms since upstream version of i915 kmd does not fully support them
(pending patches upstream):
* DG1
* SG1

By default, media-driver builds against upstream i915 kmd and will miss
support for the platforms listed above. To enable new platforms which
require special i915 kmd specify `ENABLE_PRODUCTION_KMD=ON` (default: `OFF`)
build configuration option.

## 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](https://cgit.freedesktop.org/drm-tip/commit/?id=0b71cea29fc29bbd8e9dd9c641fee6bd75f68274)

3. HuC firmware is necessary for AVC/HEVC/VP9 low power encoding bitrate control, including CBR, VBR, etc. As of now, HuC firmware support is disabled in Linux kernels by default. kernel command line option "i915.enable_guc=2" for HuC loading can be set e.g. by doing echo "options i915 enable_guc=2" > /etc/modprobe.d/i915.conf (as root). 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
   * ICL: starting from kernel 5.2
   * EHL/JSL: starting from kernel 5.8
   * TGL: starting from kernel 5.9
   * RKL: [drm-tip](https://cgit.freedesktop.org/drm-tip)

##### (*) Other names and brands may be claimed as property of others.

zywu/media-driver

简介

发行版

贡献者

近期动态

zywu/media-driver .gitee-modal { width: 500px !important; }

简介

发行版

贡献者

近期动态

搜索帮助

zywu/media-driver