Building webrtc with libvpx optimizations

[Paul]

Hi,

I am running the vp8/vp9 SW codec with the webrtc demo on android ARM 64-bit processor (A53 and A57).

I would like to know build settings to enable arm neon/instrinsic, and multithreading for the SW VP8/VP9 codec.

I have webrtc branch /branch-heads/41, and libvpx commit:

https://chromium.googlesource.com/chromium/deps/libvpx.git/+/c600ca703b712ac0d2db719970a1fce6de70fcb4

I am building webrtc with commands:

. build/android/envsetup.sh

export GYP_DEFINES="build_with_libjingle=1 build_with_chromium=0 libjingle_java=1 OS=android $GYP_DEFINES"   

ninja -C out/Release

WebRTCDemo-debug.apk is used for this test. With the above build settings, are all vp8/vp9 optimizations (arm neon, instrinsic, multi-threading) 

enabled for ARm 64-bit processor (A53, A57) on Android?  If not, what changes do I need to make? 

Thanks,

Paul.

[Henrik Kjellander]

+stefan 

Stefan can probably comment on what features are currently enabled. 

If you want to dig yourself, you'll find most of the info in https://code.google.com/p/chromium/codesearch#chromium/src/third_party/libvpx/libvpx.gyp

I believe we try to use as much as possible, but I don't know the specifics.

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[Stefan Holmer]

Sorry, I don't know what features from the top of my head. Take a look at that gyp file and also how VP8 is being configured in vp8_impl.cc.