自编译webrtc-native

webrtc-native.sh

# how to build webrtc-native

1. gettting code

```bash
fetch --nohooks webrtc_android
gclient sync
```

PS: more details refer to https://webrtc.org/native-code/android/

2. modify webrtc origin code

```bash
cd webrtc_android/src
git checkout m75
git reset --hard fdcb6ee481
# git remote -v
git remote set-url origin git@nanny.netease.com:wuyisheng/webrtc-native.git
git fetch && git rebase origin m75
```

3. config and build


```bash
cd webrtc_android/src 

# config for arm
gn gen out/Release --args='target_os="android" target_cpu="arm" rtc_use_h264=true rtc_use_h265=true ffmpeg_branding="Chrome" proprietary_codecs=true'

# config for x86
gn gen out/Releasex86 --args='target_os="android" target_cpu="x86" rtc_use_h264=true rtc_use_h265=true ffmpeg_branding="Chrome" proprietary_codecs=true'

# more config?
# Refer to webrtc's docs and review thoes code that I have modified.
```

```bash
ninja -C out/Release
ninja -C out/Releasex86
```

PS: It take's about three hour to sync code and build.