add RecordVoiceMessage audio focus requester for recording

separates recording from playback focus - willPausedWhenDucked is false
for recording so notification sounds don't interrupt mid-recording

Signed-off-by: vmfunc <celeste@linux.com>

features/messages/impl/src/main/kotlin/io/element/android/features/messages/impl/voicemessages/composer/DefaultVoiceMessageComposerPresenter.kt

@@ -249,7 +249,7 @@ class DefaultVoiceMessageComposerPresenter(
 
     private fun CoroutineScope.startRecording() = launch {
         try {
-            audioFocus.requestAudioFocus(AudioFocusRequester.VoiceMessage) {}
+            audioFocus.requestAudioFocus(AudioFocusRequester.RecordVoiceMessage) {}
             voiceRecorder.startRecord()
         } catch (e: SecurityException) {
             audioFocus.releaseAudioFocus()

libraries/audio/api/src/main/kotlin/io/element/android/libraries/audio/api/AudioFocus.kt

@@ -11,6 +11,7 @@ package io.element.android.libraries.audio.api
 enum class AudioFocusRequester {
     ElementCall,
     VoiceMessage,
+    RecordVoiceMessage,
     MediaViewer,
 }
 

libraries/audio/impl/src/main/kotlin/io/element/android/libraries/audio/impl/DefaultAudioFocus.kt

@@ -81,7 +81,8 @@ class DefaultAudioFocus(
 private fun AudioFocusRequester.toAudioUsage(): Int {
     return when (this) {
         AudioFocusRequester.ElementCall,
-        AudioFocusRequester.VoiceMessage -> AudioAttributes.USAGE_VOICE_COMMUNICATION
+        AudioFocusRequester.VoiceMessage,
+        AudioFocusRequester.RecordVoiceMessage -> AudioAttributes.USAGE_VOICE_COMMUNICATION
         AudioFocusRequester.MediaViewer -> AudioAttributes.USAGE_MEDIA
     }
 }
@@ -89,7 +90,8 @@ private fun AudioFocusRequester.toAudioUsage(): Int {
 private fun AudioFocusRequester.toAudioStream(): Int {
     return when (this) {
         AudioFocusRequester.ElementCall,
-        AudioFocusRequester.VoiceMessage -> AudioManager.STREAM_VOICE_CALL
+        AudioFocusRequester.VoiceMessage,
+        AudioFocusRequester.RecordVoiceMessage -> AudioManager.STREAM_VOICE_CALL
         AudioFocusRequester.MediaViewer -> AudioManager.STREAM_MUSIC
     }
 }
@@ -99,6 +101,9 @@ private fun AudioFocusRequester.willPausedWhenDucked(): Boolean {
         // (note that for Element Call, there is no action when the focus is lost)
         AudioFocusRequester.ElementCall,
         AudioFocusRequester.VoiceMessage -> true
+        // no audio output to duck when recording, and we don't want notification
+        // sounds to interrupt a recording via transient focus loss
+        AudioFocusRequester.RecordVoiceMessage -> false
         // For the MediaViewer, we let the system automatically handle the ducking
         // https://developer.android.com/media/optimize/audio-focus#automatic-ducking
         AudioFocusRequester.MediaViewer -> false