VA-API

intel/libva
VA-API - Videp Acceleration API
- by Intel
- 兼容更多
VDPAU - Video Decode and Presentation API for Unix
- by Nvdia
DRI - Direct Rendering Infrastructure

bash

apk add pciutils
lspci | grep -i graph
lspci -v -s $(lspci | grep VGA | cut -d" " -f 1)

apk add libva-utils
vainfo

apk add vdpauinfo
vdpauinfo

ls /usr/lib/dri/
ls /usr/lib/dri/${LIBVA_DRIVER_NAME}_drv_video.so

ls /dev/dri

LIBVA_DRIVER_NAME=iHD vainfo --device card1 --display drm
LIBVA_DRIVER_NAME=i1965 LIBVA_TRACE=./vainfo.log vainfo

# 内核模块
modinfo i915

# https://github.com/gjasny/v4l-utils
apk add v4l-utils
v4l2-ctl --list-devices

LIBVA_DRIVER_NAME
Intel graphics
- libva-intel-driver i965
  - 早期 - brodwell、skylake
- intel-media-driver iHD
  - 后期 - kebey lake、coffee lake
NVIDIA
- Nouveau nouveau.
- NVIDIA VDPAU vdpau
- NVIDIA NVDEC nvidia
AMD
- AMDGPU radeonsi
libva-vdpau-driver
- VDPAU backend for VA API
VAProfileNone
intel_gpu_top
- debian intel-gpu-tools
i915 内核通用模块
V4L2 - Video4Linux2
- 电视卡、网络摄像头、模拟视频采集卡
- 视频设备管理和控制
Iris
- Intel Iris Graphics
- Gen11 GPU
- 优于 i964 Mesa
- Ice Lake(9代)+

CFL - Coffee Lake
ICL - Ice Lake
Intel N100
- Intel® UHD Graphics
- Alder Lake-N
- ark.intel.com/content/www/us/en/ark/products/231803/intel-processor-n100-6m-cache-up-to-3-40-ghz.html
Wikipedia:Intel Quick Sync Video
wiki.archlinux.org/title/Hardware_video_acceleration

text

00:02.0 VGA compatible controller: Intel Corporation Alder Lake-N [UHD Graphics] (prog-if 00 [VGA controller])
	DeviceName: Onboard - Video
	Subsystem: Intel Corporation Device 7270
	Flags: bus master, fast devsel, latency 0, IRQ 137
	Memory at 6000000000 (64-bit, non-prefetchable) [size=16M]
	Memory at 4000000000 (64-bit, prefetchable) [size=256M]
	I/O ports at 3000 [size=64]
	Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: i915

关联信息

References

On this page