Implement an FfmpegVideoRenderer

[haohaozaici]

For more information, see #7079

[ojw28]

Thanks for re-sending this! We will figure out a way to get it merged.

[hqzxzwb]

Amazing work! We are longing for this feature.

[volser]

@haohaozaici I tried to build iand test it but no luck with build

[x86] SharedLibrary  : libffmpeg.so
ffmpeg_jni.cc:411: error: undefined reference to 'ANativeWindow_release'
ffmpeg_jni.cc:415: error: undefined reference to 'ANativeWindow_fromSurface'
ffmpeg_jni.cc:641: error: undefined reference to 'ANativeWindow_setBuffersGeometry'
ffmpeg_jni.cc:654: error: undefined reference to 'ANativeWindow_lock'
ffmpeg_jni.cc:722: error: undefined reference to 'ANativeWindow_unlockAndPost'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/usr/local/android-sdk-25.2.3/ndk-bundle/build/core/build-binary.mk:725: /ExoPlayer/extensions/ffmpeg/src/main/obj/local/x86/libffmpeg.so] Error 1
make: *** Waiting for unfinished jobs....
[armeabi-v7a] SharedLibrary  : libffmpeg.so
ffmpeg_jni.cc:641: error: undefined reference to 'ANativeWindow_setBuffersGeometry'
ffmpeg_jni.cc:654: error: undefined reference to 'ANativeWindow_lock'
ffmpeg_jni.cc:722: error: undefined reference to 'ANativeWindow_unlockAndPost'
ffmpeg_jni.cc:411: error: undefined reference to 'ANativeWindow_release'
ffmpeg_jni.cc:415: error: undefined reference to 'ANativeWindow_fromSurface'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [/usr/local/android-sdk-25.2.3/ndk-bundle/build/core/build-binary.mk:725: 
...

do you have any ideas, thanks!

[haohaozaici]

@volser You can add -landroid to the line LOCAL_LDLIBS to compile successfully.

LOCAL_LDLIBS := -Lffmpeg/android-libs/$(TARGET_ARCH_ABI) -landroid -llog

Because I am using cmake to develop and debug, you also need to modify com.google.android.exoplayer2.ext.ffmpeg.FfmpegLibrary#LOADER to load the so file correctly:

private static final LibraryLoader LOADER =
    new LibraryLoader("avutil", "swresample", "avcodec", "ffmpeg");

It should be noted that because of my personal reasons, this pull request is developing very slowly, and currently supported scenarios are very limited!

[ojw28]

I've been able to get adaptive playback working with this pull request by making some separate changes to DecoderVideoRenderer. I'll see if I can get those submitted into dev-v2 sometime soon!

[Exeu]

What is the Status here? Half year ago and no Update?

[Dimon70007]

Hi guys. When will this branch be merged? ffmpeg fallback should be a great feature

[ojw28]

See #2159 (comment).

[JLehman17]

Sorry if this is the wrong place to put this but,

It seems like CopyPlane needs to take the strides into account when copying data. Something like
std::memcpy(destination, source, std::min(std::min(width, source_stride), destination_stride));
prevents reading past the end of source or writing past the end of destination.

I'm pretty sure this is responsible for the issue reported here #9459

[FongMi]

Please fix conflicts