How to customize the configuration of `SilenceSkippingAudioProcessor`?

[mseroczynski]

I've found below tips here:
google/ExoPlayer#6705

But they seem to be outdated as

      override fun buildAudioRenderers(context: Context,
                                       extensionRendererMode: Int,
                                       mediaCodecSelector: MediaCodecSelector,
                                       enableDecoderFallback: Boolean,
                                       audioSink: AudioSink,
                                       eventHandler: Handler,
                                       eventListener: AudioRendererEventListener,
                                       out: ArrayList<Renderer>)

...does not expose audioProcessors anymore. I haven't found any simple way to adjust skip silence properties with current implementation and it is heavily requested feature in my app. Could you confirm that if this is currently possible?

[marcbaechinger]

I think the DefaultAudioSink supports skipping silences without you being required to add a processor. The AudioSink interface defines setSkipSilenceEnabled(boolean).

Have you tried setting the boolean flag on the audioSink when you override buildAudioSink() on the DefaultRenderersFactory()?

(EDIT: See next commend for a better option.)

This may work:

ExoPlayer.Builder playerBuilder =
    new ExoPlayer.Builder(/* context= */ this)
        .setMediaSourceFactory(createMediaSourceFactory())
        .setRenderersFactory(
            new DefaultRenderersFactory(this) {
              @Nullable
              protected AudioSink buildAudioSink(
                  Context context, boolean enableFloatOutput, boolean enableAudioTrackPlaybackParams) {
                DefaultAudioSink audioSink = new DefaultAudioSink.Builder(context)
                    .setEnableFloatOutput(enableFloatOutput)
                    .setEnableAudioTrackPlaybackParams(enableAudioTrackPlaybackParams)
                    .build();
                audioSink.setSkipSilenceEnabled(/* skipSilenceEnabled= */ true);
                return audioSink;
              }
            });

[marcbaechinger]

There is an ever easier option:

ExoPlayer player =
    new ExoPlayer.Builder(/* context= */ this)
        .setSkipSilenceEnabled(true)
        .build();

[mseroczynski]

Thank you for you replies but they do not address my question. What i'm trying to achieve is configuring the exact values in ms for silence to skip. The default implementation of skip silence needs fine tuning due to our users reports.

I need a ways to set SkipSilenceProperties just as in mentioned issue:

SkipSilenceProperties skipSilence = new PlaybackParameters.SkipSilenceProperties(200, 300, .5); // Padding in ms, Length Detection in ms, Threshold declared as a float from 0-1 player.setPlaybackParameters(skipSilence);

[marcbaechinger]

Ah, I see. If I understand correctly and you are using DefaultRenderersFactory, then you can pass an empty array to the constructor of DefaultAudioSink.DefaultAudioProcessorChain . The audioProcessors parameter that you are missing from the mentioned issue are the 'user-defined' processors (see JavaDoc) which is an empty array as per DefaultRenderersFactory.buildAudioSink().

So in case you don't have user-defined processors defined yourself, this is an empty array.

ExoPlayer.Builder playerBuilder =
    new ExoPlayer.Builder(/* context= */ this)
        .setRenderersFactory(
            new DefaultRenderersFactory(this) {
              @Nullable
              protected AudioSink buildAudioSink(
                  Context context,
                  boolean enableFloatOutput,
                  boolean enableAudioTrackPlaybackParams) {
                DefaultAudioSink audioSink =
                    new DefaultAudioSink.Builder(context)
                        .setAudioProcessorChain(
                            new DefaultAudioSink.DefaultAudioProcessorChain(
                                new AudioProcessor[0], // silence and sonic processor only
                                new SilenceSkippingAudioProcessor(
                                    minimumSilenceDurationUs,
                                    paddingSilenceUs,
                                    silenceThresholdLevel,
                                new SonicAudioProcessor()))
                        .setEnableFloatOutput(enableFloatOutput)
                        .setEnableAudioTrackPlaybackParams(enableAudioTrackPlaybackParams)
                        .build();
                return audioSink;
              }
            });

[marcbaechinger]

Closing due to lack of activity.