Add vp9 high bit depth option

third_party/libvpx/generate_gni.sh

Index: third_party/libvpx/generate_gni.sh
diff --git a/third_party/libvpx/generate_gni.sh b/third_party/libvpx/generate_gni.sh
index 1516235af91ce61cfeee386b8f740bba2c340315..ab0ffd7ce38e1fbb8ff3f9f39d96cbb3866ddfa1 100755
--- a/third_party/libvpx/generate_gni.sh
+++ b/third_party/libvpx/generate_gni.sh
@@ -13,8 +13,10 @@
 #
 # The following optional flags are supported:
 # --disable-avx : AVX+AVX2 support is disabled.
-# --only-configs: Excludes generation of GN and GYP files (i.e. only
-#                 configuration headers are generated).
+# --only-configs : Excludes generation of GN and GYP files (i.e. only
+#                  configuration headers are generated).
+# --enable-vp9-highbitdepth : Allow for high bit depth internal, 10 and 12 bit
+#                             vp9 encode and decode.
 
 export LC_ALL=C
 BASE_DIR=$(pwd)
@@ -33,6 +35,10 @@ case $i in
   ONLY_CONFIGS=true
   shift
   ;;
+  --enable-vp9-highbitdepth)
+  HIGHBD="--enable-vp9-highbitdepth"
+  shift
+  ;;
   *)
   echo "Unknown option: $i"
   exit 1
@@ -306,7 +312,7 @@ cp -R $LIBVPX_SRC_DIR $TEMP_DIR
 cd $TEMP_DIR
 
 echo "Generate config files."
-all_platforms="--enable-external-build --enable-postproc --disable-install-srcs --enable-multi-res-encoding --enable-temporal-denoising --disable-unit-tests --disable-install-docs --disable-examples --enable-vp9-temporal-denoising --enable-vp9-postproc --size-limit=16384x16384 $DISABLE_AVX --as=yasm"
+all_platforms="--enable-external-build --enable-postproc --disable-install-srcs --enable-multi-res-encoding --enable-temporal-denoising --disable-unit-tests --disable-install-docs --disable-examples --enable-vp9-temporal-denoising --enable-vp9-postproc --size-limit=16384x16384 $DISABLE_AVX --as=yasm $HIGHBD"

[jzern, 2016/09/07 23:27:37]

for now we only want to do this for x86 where we have comparable performance for
8-bit decodes between the two configs.

 gen_config_files linux/ia32 "--target=x86-linux-gcc --disable-ccache --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files linux/x64 "--target=x86_64-linux-gcc --disable-ccache --enable-pic --enable-realtime-only ${all_platforms}"
 gen_config_files linux/arm "--target=armv7-linux-gcc --enable-pic --enable-realtime-only --disable-install-bins --disable-install-libs --disable-neon ${all_platforms}"