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| 1 # Enabling hardware |
| 2 |
| 3 <video> |
| 4 |
| 5 decode codepaths on linux |
| 6 |
| 7 Hardware acceleration of video decode on linux is [unsupported](http://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-acce
lerated platforms (such as CrOS and win7) in a linux-based development environme
nt. Here's one way to do so, with details based on a gprecise setup. |
| 8 |
| 9 * Install pre-requisites: On Ubuntu Precise, at least, this includes: |
| 10 ``` |
| 11 sudo apt-get install libtool libvdpau1 libvdpau-dev |
| 12 ``` |
| 13 |
| 14 * Install and configure [libva](http://cgit.freedesktop.org/libva/) |
| 15 ``` |
| 16 DEST=${HOME}/apps/libva |
| 17 cd /tmp |
| 18 git clone git://anongit.freedesktop.org/libva |
| 19 cd libva |
| 20 git reset --hard libva-1.2.1 |
| 21 ./autogen.sh && ./configure --prefix=${DEST} |
| 22 make -j32 && make install |
| 23 ``` |
| 24 * Install and configure the [VDPAU](http://cgit.freedesktop.org/vaapi/vdpau-dr
iver) VAAPI driver |
| 25 ``` |
| 26 DEST=${HOME}/apps/libva |
| 27 cd /tmp |
| 28 git clone git://anongit.freedesktop.org/vaapi/vdpau-driver |
| 29 cd vdpau-driver |
| 30 export PKG_CONFIG_PATH=${DEST}/lib/pkgconfig/:$PKG_CONFIG_PATH |
| 31 export LIBVA_DRIVERS_PATH=${DEST}/lib/dri |
| 32 export LIBVA_X11_DEPS_CFLAGS=-I${DEST}/include |
| 33 export LIBVA_X11_DEPS_LIBS=-L${DEST}/lib |
| 34 export LIBVA_DEPS_CFLAGS=-I${DEST}/include |
| 35 export LIBVA_DEPS_LIBS=-L${DEST}/lib |
| 36 make distclean |
| 37 unset CC CXX |
| 38 ./autogen.sh && ./configure --prefix=${DEST} --enable-debug |
| 39 find . -name Makefile |xargs sed -i 'sI/usr/lib/xorg/modules/driversI${DEST}/lib
/driIg' |
| 40 sed -i -e 's/_(\(VAEncH264VUIBufferType\|VAEncH264SEIBufferType\));//' src/vdpau
_dump.c |
| 41 make -j32 && rm -f ${DEST}/lib/dri/{nvidia_drv_video.so,s3g_drv_video.so} && mak
e install |
| 42 ``` |
| 43 * Add to `$GYP_DEFINES`: |
| 44 * `chromeos=1` to link in `VaapiVideoDecodeAccelerator` |
| 45 * `proprietary_codecs=1 ffmpeg_branding=Chrome` to allow Chrome to play h.26
4 content, which is the only codec VAVDA knows about today. |
| 46 * Re-run gyp (`./build/gyp_chromium` or `gclient runhooks`) |
| 47 * Rebuild chrome |
| 48 * Run chrome with `LD_LIBRARY_PATH=${HOME}/apps/libva/lib` in the environment,
and with the --no-sandbox command line flag. |
| 49 * If things don't work, a Debug build (to include D\*LOG's) with `--vmodule=*c
ontent/common/gpu/media/*=10,gpu_video*=1` might be enlightening. |
| 50 |
| 51 # NOTE THIS IS AN UNSUPPORTED CONFIGURATION AND LIKELY TO BE BROKEN AT ANY POINT
IN TIME |
| 52 |
| 53 This page is purely here to help developers targeting supported HW |
| 54 |
| 55 <video> |
| 56 |
| 57 decode platforms be more effective. Do not expect help if this setup fails to
work. |
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