Create VoiceBroadcastMediaPlayer

2024-07-21 10:05:45 +00:00 · 2022-10-17 06:49:01 +02:00 · 2022-10-17 06:49:01 +02:00 · eb44b02228
parent 032c0152e4
commit eb44b02228
1 changed files with 163 additions and 0 deletions
--- a/vector/src/main/java/im/vector/app/features/voicebroadcast/VoiceBroadcastPlayer.kt
+++ b/vector/src/main/java/im/vector/app/features/voicebroadcast/VoiceBroadcastPlayer.kt
@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2022 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.features.voicebroadcast
+
+import android.media.AudioAttributes
+import android.media.MediaPlayer
+import im.vector.app.features.home.room.detail.timeline.helper.AudioMessagePlaybackTracker
+import im.vector.app.features.home.room.detail.timeline.helper.AudioMessagePlaybackTracker.Listener.State
+import im.vector.app.features.voice.VoiceFailure
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import org.matrix.android.sdk.api.extensions.orFalse
+import org.matrix.android.sdk.api.session.Session
+import org.matrix.android.sdk.api.session.events.model.getRelationContent
+import org.matrix.android.sdk.api.session.getRoom
+import org.matrix.android.sdk.api.session.room.Room
+import org.matrix.android.sdk.api.session.room.model.message.MessageAudioContent
+import org.matrix.android.sdk.api.session.room.model.message.MessageAudioEvent
+import timber.log.Timber
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class VoiceBroadcastPlayer @Inject constructor(
+        private val session: Session,
+        private val playbackTracker: AudioMessagePlaybackTracker,
+) {
+
+    private val mediaPlayerScope = CoroutineScope(Dispatchers.IO)
+
+    private var currentMediaPlayer: MediaPlayer? = null
+    private var currentPlayingIndex: Int = -1
+    private var playlist = emptyList<MessageAudioEvent>()
+    private val currentVoiceBroadcastEventId
+        get() = playlist.firstOrNull()?.root?.getRelationContent()?.eventId
+
+    private val mediaPlayerListener = MediaPlayerListener()
+
+    fun play(roomId: String, eventId: String) {
+        val room = session.getRoom(roomId) ?: error("Unknown roomId: $roomId")
+
+        when {
+            currentVoiceBroadcastEventId != eventId -> {
+                stop()
+                updatePlaylist(room, eventId)
+                startPlayback()
+            }
+            playbackTracker.getPlaybackState(eventId) is State.Playing -> pause()
+            else -> resumePlayback()
+        }
+    }
+
+    fun pause() {
+        currentMediaPlayer?.pause()
+        currentVoiceBroadcastEventId?.let { playbackTracker.pausePlayback(it) }
+    }
+
+    fun stop() {
+        currentMediaPlayer?.stop()
+        currentMediaPlayer?.release()
+        currentMediaPlayer?.setOnInfoListener(null)
+        currentMediaPlayer = null
+        currentVoiceBroadcastEventId?.let { playbackTracker.stopPlayback(it) }
+        playlist = emptyList()
+        currentPlayingIndex = -1
+    }
+
+    @Suppress("UNUSED_PARAMETER")
+    private fun updatePlaylist(room: Room, eventId: String) {
+        // TODO get the list of voice messages
+    }
+
+    private fun startPlayback() {
+        val content = playlist.firstOrNull()?.content ?: run { Timber.w("## VoiceBroadcastPlayer: No content to play"); return }
+        mediaPlayerScope.launch {
+            try {
+                currentMediaPlayer = prepareMediaPlayer(content)
+                currentMediaPlayer?.start()
+                currentPlayingIndex = 0
+                currentVoiceBroadcastEventId?.let { playbackTracker.startPlayback(it) }
+                prepareNextFile()
+            } catch (failure: Throwable) {
+                Timber.e(failure, "Unable to start playback")
+                throw VoiceFailure.UnableToPlay(failure)
+            }
+        }
+    }
+
+    private fun resumePlayback() {
+        currentMediaPlayer?.start()
+        currentVoiceBroadcastEventId?.let { playbackTracker.startPlayback(it) }
+    }
+
+    private suspend fun prepareNextFile() {
+        val nextContent = playlist.getOrNull(currentPlayingIndex + 1)?.content
+        if (nextContent == null) {
+            currentMediaPlayer?.setOnCompletionListener(mediaPlayerListener)
+        } else {
+            val nextMediaPlayer = prepareMediaPlayer(nextContent)
+            currentMediaPlayer?.setNextMediaPlayer(nextMediaPlayer)
+        }
+    }
+
+    private suspend fun prepareMediaPlayer(messageAudioContent: MessageAudioContent): MediaPlayer {
+        val audioFile = session.fileService().downloadFile(messageAudioContent)
+        return audioFile.inputStream().use { fis ->
+            MediaPlayer().apply {
+                setAudioAttributes(
+                        AudioAttributes.Builder()
+                                // Do not use CONTENT_TYPE_SPEECH / USAGE_VOICE_COMMUNICATION because we want to play loud here
+                                .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
+                                .setUsage(AudioAttributes.USAGE_MEDIA)
+                                .build()
+                )
+                setDataSource(fis.fd)
+                setOnInfoListener(mediaPlayerListener)
+                setOnErrorListener(mediaPlayerListener)
+                prepare()
+            }
+        }
+    }
+
+    inner class MediaPlayerListener : MediaPlayer.OnInfoListener, MediaPlayer.OnCompletionListener, MediaPlayer.OnErrorListener {
+
+        override fun onInfo(mp: MediaPlayer, what: Int, extra: Int): Boolean {
+            when (what) {
+                MediaPlayer.MEDIA_INFO_STARTED_AS_NEXT -> {
+                    currentMediaPlayer = mp
+                    currentPlayingIndex++
+                    mediaPlayerScope.launch { prepareNextFile() }
+                }
+            }
+            return false
+        }
+
+        override fun onCompletion(mp: MediaPlayer) {
+            // Verify that a new media has not been set in the mean time
+            if (!currentMediaPlayer?.isPlaying.orFalse()) {
+                stop()
+            }
+        }
+
+        override fun onError(mp: MediaPlayer, what: Int, extra: Int): Boolean {
+            stop()
+            return true
+        }
+    }
+}