更新libva及V4l2 Buffer Sharing

来源：互联网发布：指南针炒股软件诈骗编辑：程序博客网时间：2024/05/21 21:42

https://cgit.freedesktop.org/vaapi/libva/

https://cgit.freedesktop.org/vaapi/intel-driver

https://www.mythtv.org/wiki/VAAPI

https://freedesktop.org/wiki/Software/Beignet/howto/v4l2-buffer-sharing-howto/

在编译Beignet的V4l2Buffer Sharing的demo时需要安装libva库，并且该库的版本需要libva>= 0.39.4。

若采用以下方法安装libva，则不能安装最新版本。

sudo apt-get update

sudo apt-get install libva-dev

sudo apt-get install i965-va-driverlibva-intel-vaapi-driver vainfo

vainfo

所以，需要自己手动安装libva：先安装libva，再安装vaapi的intel-dirver

cd ~

mkdir Libva_build

cd Libva_build

sudo apt-get build-dep libva1

git clone https://cgit.freedesktop.org/vaapi/libva/

cd libva

./autogen.sh [--enable-va-messaging=no]

./configure [--enable-va-messaging=no]

make

sudo make install

cd ..

git clone https://cgit.freedesktop.org/vaapi/intel-driver

cd intel-driver

./autogen.sh

./configure

make

sudo make install

在beignet的examples中加入libva源码VA-API

https://www.freedesktop.org/wiki/Software/vaapi/

in the url to git clone:https://cgit.freedesktop.org/libva/

liuhanglh@liuhang-dev:~/beignet/examples/thirdparty$git clone https://anongit.freedesktop.org/git/libva.git

V4l2 Buffer Sharing HowTo Sample code:

https://www.freedesktop.org/wiki/Software/Beignet/howto/v4l2-buffer-sharing-howto/

然后在以前安装的beignet文件下的build文件中

cmake -DBUILD_EXAMPLES=ON ../

make

cd examples

. ../utests/setenv.sh

./example-v4l2_buffer_sharing

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