The Opus extension provides LibopusAudioRenderer
, which uses libopus (the Opus decoding library) to decode Opus audio.
Please note that whilst the code in this repository is licensed under Apache 2.0, using this extension also requires building and including one or more external libraries as described below. These are licensed separately.
To use this extension you need to clone the ExoPlayer repository and depend on its modules locally. Instructions for doing this can be found in ExoPlayer's top level README.
In addition, it‘s necessary to build the extension’s native components as follows:
cd "<path to exoplayer checkout>" EXOPLAYER_ROOT="$(pwd)" OPUS_EXT_PATH="${EXOPLAYER_ROOT}/extensions/opus/src/main"
NDK_PATH="<path to Android NDK>"
cd "${OPUS_EXT_PATH}/jni" && \ git clone https://git.xiph.org/opus.git libopus
cd ${OPUS_EXT_PATH}/jni && ./convert_android_asm.sh
cd "${OPUS_EXT_PATH}"/jni && \ ${NDK_PATH}/ndk-build APP_ABI=all -j4
We do not provide support for building this extension on Windows, however it should be possible to follow the Linux instructions in Windows PowerShell.
convert_android_asm.sh
${OPUS_EXT_PATH}/jni/libopus
.Once you‘ve followed the instructions above to check out, build and depend on the extension, the next step is to tell ExoPlayer to use LibopusAudioRenderer
. How you do this depends on which player API you’re using:
DefaultRenderersFactory
to SimpleExoPlayer.Builder
, you can enable using the extension by setting the extensionRendererMode
parameter of the DefaultRenderersFactory
constructor to EXTENSION_RENDERER_MODE_ON
. This will use LibopusAudioRenderer
for playback if MediaCodecAudioRenderer
doesn’t support the input format. Pass EXTENSION_RENDERER_MODE_PREFER
to give LibopusAudioRenderer
priority over MediaCodecAudioRenderer
.DefaultRenderersFactory
, add a LibopusAudioRenderer
to the output list in buildAudioRenderers
. ExoPlayer will use the first Renderer
in the list that supports the input media format.RenderersFactory
, return a LibopusAudioRenderer
instance from createRenderers
. ExoPlayer will use the first Renderer
in the returned array that supports the input media format.ExoPlayer.Builder
, pass a LibopusAudioRenderer
in the array of Renderer
s. ExoPlayer will use the first Renderer
in the list that supports the input media format.Note: These instructions assume you're using DefaultTrackSelector
. If you have a custom track selector the choice of Renderer
is up to your implementation, so you need to make sure you are passing an LibopusAudioRenderer
to the player, then implement your own logic to use the renderer for a given track.
To try out playback using the extension in the demo application, see enabling extension decoders.
com.google.android.exoplayer2.ext.opus.*
belong to this module.