Use embedded libopus encoder for devices that somehow lack the official one

changelog.d/7010.feature

@@ -0,0 +1 @@
+Try to detect devices that lack Opus encoder support, use bundled libopus library for those.

vector/src/main/java/im/vector/app/features/home/room/detail/composer/AudioMessageHelper.kt

@@ -48,7 +48,7 @@ class AudioMessageHelper @Inject constructor(
 ) {
     private var mediaPlayer: MediaPlayer? = null
     private var currentPlayingId: String? = null
-    private var voiceRecorder: VoiceRecorder = voiceRecorderProvider.provideVoiceRecorder()
+    private val voiceRecorder: VoiceRecorder by lazy { voiceRecorderProvider.provideVoiceRecorder() }
 
     private val amplitudeList = mutableListOf<Int>()
 

vector/src/main/java/im/vector/app/features/voice/VoiceRecorderProvider.kt

@@ -17,6 +17,8 @@
 package im.vector.app.features.voice
 
 import android.content.Context
+import android.media.MediaCodecList
+import android.media.MediaFormat
 import android.os.Build
 import im.vector.app.features.VectorFeatures
 import kotlinx.coroutines.Dispatchers
@@ -27,10 +29,20 @@ class VoiceRecorderProvider @Inject constructor(
         private val vectorFeatures: VectorFeatures,
 ) {
     fun provideVoiceRecorder(): VoiceRecorder {
-        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q && vectorFeatures.forceUsageOfOpusEncoder().not()) {
+        return if (useFallbackRecorder()) {
-            VoiceRecorderQ(context)
-        } else {
             VoiceRecorderL(context, Dispatchers.IO)
+        } else {
+            VoiceRecorderQ(context)
         }
     }
+
+    private fun useFallbackRecorder(): Boolean {
+        return Build.VERSION.SDK_INT < Build.VERSION_CODES.Q || !hasOpusEncoder() || vectorFeatures.forceUsageOfOpusEncoder()
+    }
+
+    private fun hasOpusEncoder(): Boolean {
+        val codecList = MediaCodecList(MediaCodecList.ALL_CODECS)
+        val format = MediaFormat.createAudioFormat(MediaFormat.MIMETYPE_AUDIO_OPUS, 48000, 1)
+        return codecList.findEncoderForFormat(format) != null
+    }
 }