How to get and build the libyuv code.
You'll need to have depot tools installed: https://www.chromium.org/developers/how-tos/install-depot-tools Refer to chromium instructions for each platform for other prerequisites.
Create a working directory, enter it, and run:
gclient config https://chromium.googlesource.com/libyuv/libyuv gclient sync
Then you'll get a .gclient file like:
solutions = [
{ "name" : "libyuv",
"url" : "https://chromium.googlesource.com/libyuv/libyuv",
"deps_file" : "DEPS",
"managed" : True,
"custom_deps" : {
},
"safesync_url": "",
},
];
For iOS add ;target_os=['ios']; to your OSX .gclient and run GYP_DEFINES="OS=ios" gclient sync.
Browse the Git reprository: https://chromium.googlesource.com/libyuv/libyuv/+/master
For Android add ;target_os=['android']; to your Linux .gclient
solutions = [
{ "name" : "libyuv",
"url" : "https://chromium.googlesource.com/libyuv/libyuv",
"deps_file" : "DEPS",
"managed" : True,
"custom_deps" : {
},
"safesync_url": "",
},
];
target_os = ["android", "unix"];
Then run:
export GYP_DEFINES="OS=android" gclient sync
Caveat: Theres an error with Google Play services updates. If you get the error “Your version of the Google Play services library is not up to date”, run the following: cd chromium/src ./build/android/play_services/update.py download cd ../..
For Windows the gclient sync must be done from an Administrator command prompt.
The sync will generate native build files for your environment using gyp (Windows: Visual Studio, OSX: XCode, Linux: make). This generation can also be forced manually: gclient runhooks
To get just the source (not buildable): git clone https://chromium.googlesource.com/libyuv/libyuv
set GYP_DEFINES=target_arch=ia32 call python gyp_libyuv -fninja -G msvs_version=2013 ninja -j7 -C out\Release ninja -j7 -C out\Debug set GYP_DEFINES=target_arch=x64 call python gyp_libyuv -fninja -G msvs_version=2013 ninja -C out\Debug_x64 ninja -C out\Release_x64
set GYP_DEFINES=clang=1 target_arch=ia32 libyuv_enable_svn=1 set LLVM_REPO_URL=svn://svn.chromium.org/llvm-project call python tools\clang\scripts\update.py call python gyp_libyuv -fninja libyuv_test.gyp ninja -C out\Debug ninja -C out\Release
Clang 64 bit shown. Remove clang=1 for GCC and change x64 to ia32 for 32 bit.
GYP_DEFINES="clang=1 target_arch=x64" ./gyp_libyuv ninja -j7 -C out/Debug ninja -j7 -C out/Release GYP_DEFINES="clang=1 target_arch=ia32" ./gyp_libyuv ninja -j7 -C out/Debug ninja -j7 -C out/Release
http://www.chromium.org/developers/how-tos/build-instructions-ios
Add to .gclient last line: target_os=['ios'];
armv7
GYP_DEFINES="OS=ios target_arch=armv7 target_subarch=arm32" GYP_CROSSCOMPILE=1 GYP_GENERATOR_FLAGS="output_dir=out_ios" ./gyp_libyuv ninja -j7 -C out_ios/Debug-iphoneos libyuv_unittest ninja -j7 -C out_ios/Release-iphoneos libyuv_unittest
arm64
GYP_DEFINES="OS=ios target_arch=arm64 target_subarch=arm64" GYP_CROSSCOMPILE=1 GYP_GENERATOR_FLAGS="output_dir=out_ios" ./gyp_libyuv ninja -j7 -C out_ios/Debug-iphoneos libyuv_unittest ninja -j7 -C out_ios/Release-iphoneos libyuv_unittest
both armv7 and arm64 (fat)
GYP_DEFINES="OS=ios target_arch=armv7 target_subarch=both" GYP_CROSSCOMPILE=1 GYP_GENERATOR_FLAGS="output_dir=out_ios" ./gyp_libyuv ninja -j7 -C out_ios/Debug-iphoneos libyuv_unittest ninja -j7 -C out_ios/Release-iphoneos libyuv_unittest
simulator
GYP_DEFINES="OS=ios target_arch=ia32 target_subarch=arm32" GYP_CROSSCOMPILE=1 GYP_GENERATOR_FLAGS="output_dir=out_sim" ./gyp_libyuv ninja -j7 -C out_sim/Debug-iphonesimulator libyuv_unittest ninja -j7 -C out_sim/Release-iphonesimulator libyuv_unittest
https://code.google.com/p/chromium/wiki/AndroidBuildInstructions
Add to .gclient last line: target_os=['android'];
armv7
GYP_DEFINES="OS=android" GYP_CROSSCOMPILE=1 ./gyp_libyuv ninja -j7 -C out/Debug libyuv_unittest_apk ninja -j7 -C out/Release libyuv_unittest_apk
arm64
GYP_DEFINES="OS=android target_arch=arm64 target_subarch=arm64" GYP_CROSSCOMPILE=1 ./gyp_libyuv ninja -j7 -C out/Debug libyuv_unittest_apk ninja -j7 -C out/Release libyuv_unittest_apk
ia32
GYP_DEFINES="OS=android target_arch=ia32" GYP_CROSSCOMPILE=1 ./gyp_libyuv ninja -j7 -C out/Debug libyuv_unittest_apk ninja -j7 -C out/Release libyuv_unittest_apk GYP_DEFINES="OS=android target_arch=ia32 android_full_debug=1" GYP_CROSSCOMPILE=1 ./gyp_libyuv ninja -j7 -C out/Debug libyuv_unittest_apk
mipsel
GYP_DEFINES="OS=android target_arch=mipsel" GYP_CROSSCOMPILE=1 ./gyp_libyuv ninja -j7 -C out/Debug libyuv_unittest_apk ninja -j7 -C out/Release libyuv_unittest_apk
arm32 disassembly:
third_party/android_tools/ndk/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-objdump -d out/Release/obj/source/libyuv.row_neon.o
arm64 disassembly:
third_party/android_tools/ndk/toolchains/aarch64-linux-android-4.9/prebuilt/linux-x86_64/bin/aarch64-linux-android-objdump -d out/Release/obj/source/libyuv.row_neon64.o
Running tests:
util/android/test_runner.py gtest -s libyuv_unittest -t 7200 --verbose --release --gtest_filter=*
Running test as benchmark:
util/android/test_runner.py gtest -s libyuv_unittest -t 7200 --verbose --release --gtest_filter=* -a "--libyuv_width=1280 --libyuv_height=720 --libyuv_repeat=999 --libyuv_flags=-1"
Running test with C code:
util/android/test_runner.py gtest -s libyuv_unittest -t 7200 --verbose --release --gtest_filter=* -a "--libyuv_width=1280 --libyuv_height=720 --libyuv_repeat=999 --libyuv_flags=1 --libyuv_cpu_info=1"
gn gen out/Release "--args=is_debug=false target_cpu=\"x86\"" gn gen out/Debug "--args=is_debug=true target_cpu=\"x86\"" ninja -C out/Release ninja -C out/Debug
gn gen out/Official "--args=is_debug=false is_official_build=true is_chrome_branded=true" ninja -C out/Official
GYP_DEFINES="target_arch=x64" ./gyp_libyuv ninja -j7 -C out/Debug ninja -j7 -C out/Release GYP_DEFINES="target_arch=ia32" ./gyp_libyuv ninja -j7 -C out/Debug ninja -j7 -C out/Release
On CentOS 32 bit the following work around allows a sync:
export GYP_DEFINES="host_arch=ia32" gclient sync
Modify libyuv.gyp from ‘static_library’ to ‘shared_library’, and add ‘LIBYUV_BUILDING_SHARED_LIBRARY’ to ‘defines’.
gclient runhooks
After this command follow the building the library instructions above.
If you get a compile error for atlthunk.lib on Windows, read http://www.chromium.org/developers/how-tos/build-instructions-windows
ninja -C out/Debug libyuv ninja -C out/Debug libyuv_unittest ninja -C out/Debug compare ninja -C out/Debug convert ninja -C out/Debug psnr ninja -C out/Debug cpuid
make -j7 V=1 -f linux.mk make -j7 V=1 -f linux.mk clean make -j7 V=1 -f linux.mk CXX=clang++
Install cmake: http://www.cmake.org/
Default debug build:
mkdir out cd out cmake .. cmake --build .
Release build/install
mkdir out cd out cmake -DCMAKE_INSTALL_PREFIX="/usr/lib" -DCMAKE_BUILD_TYPE="Release" .. cmake --build . --config Release sudo cmake --build . --target install --config Release
Pre-requisite:
Then:
call "c:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\bin\x86_arm\vcvarsx86_arm.bat"
or with Visual Studio 2013:
call "c:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\x86_arm\vcvarsx86_arm.bat" nmake /f winarm.mk clean nmake /f winarm.mk
Modify libyuv.gyp from ‘static_library’ to ‘shared_library’, and add ‘LIBYUV_BUILDING_SHARED_LIBRARY’ to ‘defines’. Then run this.
gclient runhooks
After this command follow the building the library instructions above.
If you get a compile error for atlthunk.lib on Windows, read http://www.chromium.org/developers/how-tos/build-instructions-windows
set GYP_DEFINES=target_arch=x64 gclient runhooks V=1
export GYP_DEFINES="target_arch=arm" export CROSSTOOL=`<path>`/arm-none-linux-gnueabi export CXX=$CROSSTOOL-g++ export CC=$CROSSTOOL-gcc export AR=$CROSSTOOL-ar export AS=$CROSSTOOL-as export RANLIB=$CROSSTOOL-ranlib gclient runhooks
out\Release\libyuv_unittest.exe --gtest_catch_exceptions=0 --gtest_filter="*"
out/Release/libyuv_unittest --gtest_filter="*"
out/Release/libyuv_unittest --gtest_filter="*"
Replace --gtest_filter=“*” with specific unittest to run. May include wildcards. e.g.
out/Release/libyuv_unittest --gtest_filter=libyuvTest.I420ToARGB_Opt
Pre-requisite: Install IntelSDE for Windows: http://software.intel.com/en-us/articles/intel-software-development-emulator
Then run:
c:\intelsde\sde -hsw -- out\release\libyuv_unittest.exe --gtest_filter=*
Pre-requisite: Install Dr Memory for Windows and add it to your path: http://www.drmemory.org/docs/page_install_windows.html
set GYP_DEFINES=build_for_tool=drmemory target_arch=ia32 call python gyp_libyuv -fninja -G msvs_version=2013 ninja -C out\Debug drmemory out\Debug\libyuv_unittest.exe --gtest_catch_exceptions=0 --gtest_filter=*
See Chromium instructions for sanitizers: https://www.chromium.org/developers/testing/undefinedbehaviorsanitizer
Sanitizers available: TSan, MSan, ASan, UBSan, LSan
GYP_DEFINES='ubsan=1' gclient runhooks ninja -C out/Release
Memory errors and race conditions can be found by running tests under special memory tools. [Valgrind] 1 is an instrumentation framework for building dynamic analysis tools. Various tests and profilers are built upon it to find memory handling errors and memory leaks, for instance.
solutions = [
{ "name" : "libyuv",
"url" : "https://chromium.googlesource.com/libyuv/libyuv",
"deps_file" : "DEPS",
"managed" : True,
"custom_deps" : {
"libyuv/chromium/src/third_party/valgrind": "https://chromium.googlesource.com/chromium/deps/valgrind/binaries",
},
"safesync_url": "",
},
]
Then run:
GYP_DEFINES="clang=0 target_arch=x64 build_for_tool=memcheck" python gyp_libyuv ninja -C out/Debug valgrind out/Debug/libyuv_unittest
For more information, see http://www.chromium.org/developers/how-tos/using-valgrind
GYP_DEFINES="clang=0 target_arch=x64 build_for_tool=tsan" python gyp_libyuv ninja -C out/Debug valgrind out/Debug/libyuv_unittest
For more info, see http://www.chromium.org/developers/how-tos/using-valgrind/threadsanitizer
GYP_DEFINES="clang=0 target_arch=x64 build_for_tool=asan" python gyp_libyuv ninja -C out/Debug valgrind out/Debug/libyuv_unittest
For more info, see http://dev.chromium.org/developers/testing/addresssanitizer
The unittests can be used to benchmark.
set LIBYUV_WIDTH=1280 set LIBYUV_HEIGHT=720 set LIBYUV_REPEAT=999 set LIBYUV_FLAGS=-1 out\Release\libyuv_unittest.exe --gtest_filter=*I420ToARGB_Opt
LIBYUV_WIDTH=1280 LIBYUV_HEIGHT=720 LIBYUV_REPEAT=1000 out/Release/libyuv_unittest --gtest_filter=*I420ToARGB_Opt libyuvTest.I420ToARGB_Opt (547 ms)
Indicates 0.547 ms/frame for 1280 x 720.
gclient sync git checkout -b mycl -t origin/master git pull <edit files> git add -u git commit -m "my change" git cl lint git cl try git cl upload -r a-reviewer@chomium.org -s <once approved..> git cl land