From d4f3e9cb9e945e51658e30f684918bb46f33c2fb Mon Sep 17 00:00:00 2001
From: Naveen <snaveen935@gmail.com>
Date: Mon, 4 Sep 2023 12:36:52 +0530
Subject: [PATCH] Tune skip silence threshold

This ensures we don't skip any short pauses in the middle of a track
---
 .../player/AudioOnlyRenderersFactory.kt       | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/app/src/main/kotlin/com/simplemobiletools/musicplayer/playback/player/AudioOnlyRenderersFactory.kt b/app/src/main/kotlin/com/simplemobiletools/musicplayer/playback/player/AudioOnlyRenderersFactory.kt
index b0da8b26..b7e72bee 100644
--- a/app/src/main/kotlin/com/simplemobiletools/musicplayer/playback/player/AudioOnlyRenderersFactory.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/musicplayer/playback/player/AudioOnlyRenderersFactory.kt
@@ -3,17 +3,52 @@ package com.simplemobiletools.musicplayer.playback.player
 import android.content.Context
 import android.os.Handler
 import android.os.Looper
+import androidx.media3.common.audio.SonicAudioProcessor
 import androidx.media3.common.util.UnstableApi
 import androidx.media3.exoplayer.DefaultRenderersFactory
 import androidx.media3.exoplayer.Renderer
+import androidx.media3.exoplayer.audio.AudioSink
+import androidx.media3.exoplayer.audio.DefaultAudioSink
+import androidx.media3.exoplayer.audio.SilenceSkippingAudioProcessor
+import androidx.media3.exoplayer.audio.SilenceSkippingAudioProcessor.DEFAULT_PADDING_SILENCE_US
 import androidx.media3.exoplayer.mediacodec.MediaCodecSelector
 import androidx.media3.exoplayer.metadata.MetadataOutput
 import androidx.media3.exoplayer.text.TextOutput
 import androidx.media3.exoplayer.video.VideoRendererEventListener
 
+private const val SKIP_SILENCE_MINIMUM_DURATION_US = 300000L
+private const val SKIP_SILENCE_THRESHOLD_LEVEL = 16.toShort()
+
 @UnstableApi
 class AudioOnlyRenderersFactory(context: Context) : DefaultRenderersFactory(context) {
 
+    override fun buildAudioSink(context: Context, enableFloatOutput: Boolean, enableAudioTrackPlaybackParams: Boolean, enableOffload: Boolean): AudioSink? {
+        val silenceSkippingAudioProcessor = SilenceSkippingAudioProcessor(
+            SKIP_SILENCE_MINIMUM_DURATION_US,
+            DEFAULT_PADDING_SILENCE_US,
+            SKIP_SILENCE_THRESHOLD_LEVEL
+        )
+
+        return DefaultAudioSink.Builder(context)
+            .setEnableFloatOutput(enableFloatOutput)
+            .setEnableAudioTrackPlaybackParams(enableAudioTrackPlaybackParams)
+            .setOffloadMode(
+                if (enableOffload) {
+                    DefaultAudioSink.OFFLOAD_MODE_ENABLED_GAPLESS_REQUIRED
+                } else {
+                    DefaultAudioSink.OFFLOAD_MODE_DISABLED
+                }
+            )
+            .setAudioProcessorChain(
+                DefaultAudioSink.DefaultAudioProcessorChain(
+                    arrayOf(),
+                    silenceSkippingAudioProcessor,
+                    SonicAudioProcessor()
+                )
+            )
+            .build()
+    }
+
     override fun buildVideoRenderers(
         context: Context,
         extensionRendererMode: Int,