a6074d4c3d
Stylistic and other fixes R=andybons@chromium.org BUG=524256 Review URL: https://codereview.chromium.org/1318153003 Cr-Commit-Position: refs/heads/master@{#346569}
70 lines
2.6 KiB
Markdown
70 lines
2.6 KiB
Markdown
# Enabling hardware <video> decode codepaths on linux
|
|
|
|
Hardware acceleration of video decode on Linux is
|
|
[unsupported](https://crbug.com/137247) in Chrome for user-facing builds. During
|
|
development (targeting other platforms) it can be useful to be able to trigger
|
|
the code-paths used on HW-accelerated platforms (such as CrOS and win7) in a
|
|
linux-based development environment. Here's one way to do so, with details based
|
|
on a gprecise setup.
|
|
|
|
* Install pre-requisites: On Ubuntu Precise, at least, this includes:
|
|
|
|
```shell
|
|
sudo apt-get install libtool libvdpau1 libvdpau-dev
|
|
```
|
|
|
|
* Install and configure [libva](http://cgit.freedesktop.org/libva/)
|
|
|
|
```shell
|
|
DEST=${HOME}/apps/libva
|
|
cd /tmp
|
|
git clone git://anongit.freedesktop.org/libva
|
|
cd libva
|
|
git reset --hard libva-1.2.1
|
|
./autogen.sh && ./configure --prefix=${DEST}
|
|
make -j32 && make install
|
|
```
|
|
|
|
* Install and configure the
|
|
[VDPAU](http://cgit.freedesktop.org/vaapi/vdpau-driver) VAAPI driver
|
|
|
|
```shell
|
|
DEST=${HOME}/apps/libva
|
|
cd /tmp
|
|
git clone git://anongit.freedesktop.org/vaapi/vdpau-driver
|
|
cd vdpau-driver
|
|
export PKG_CONFIG_PATH=${DEST}/lib/pkgconfig/:$PKG_CONFIG_PATH
|
|
export LIBVA_DRIVERS_PATH=${DEST}/lib/dri
|
|
export LIBVA_X11_DEPS_CFLAGS=-I${DEST}/include
|
|
export LIBVA_X11_DEPS_LIBS=-L${DEST}/lib
|
|
export LIBVA_DEPS_CFLAGS=-I${DEST}/include
|
|
export LIBVA_DEPS_LIBS=-L${DEST}/lib
|
|
make distclean
|
|
unset CC CXX
|
|
./autogen.sh && ./configure --prefix=${DEST} --enable-debug
|
|
find . -name Makefile |xargs sed -i 'sI/usr/lib/xorg/modules/driversI${DEST}/lib/driIg'
|
|
sed -i -e 's/_(\(VAEncH264VUIBufferType\|VAEncH264SEIBufferType\));//' src/vdpau_dump.c
|
|
make -j32 && rm -f ${DEST}/lib/dri/{nvidia_drv_video.so,s3g_drv_video.so} && make install
|
|
```
|
|
|
|
* Add to `$GYP_DEFINES`:
|
|
* `chromeos=1` to link in `VaapiVideoDecodeAccelerator`
|
|
* `proprietary_codecs=1 ffmpeg_branding=Chrome` to allow Chrome to play
|
|
h.264 content, which is the only codec VAVDA knows about today.
|
|
* Re-run gyp (`./build/gyp_chromium` or `gclient runhooks`)
|
|
* Rebuild chrome
|
|
* Run chrome with `LD_LIBRARY_PATH=${HOME}/apps/libva/lib` in the environment,
|
|
and with the `--no-sandbox` command line flag.
|
|
* If things don't work, a Debug build (to include D\*LOG's) with
|
|
`--vmodule=*content/common/gpu/media/*=10,gpu_video*=1` might be
|
|
enlightening.
|
|
|
|
** note
|
|
NOTE THIS IS AN UNSUPPORTED CONFIGURATION AND LIKELY TO BE BROKEN AT ANY
|
|
POINT IN TIME
|
|
**
|
|
|
|
This page is purely here to help developers targeting supported HW `<video>`
|
|
decode platforms be more effective. Do not expect help if this setup fails to
|
|
work.
|