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Tts upgrade (#25)

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* enable cloud tts but only in pro(flavor) debug mode for testing

* Added a device voice settings sheet to allow users to select and preview system-level TTS voices.

* Refactored `DeviceVoiceSettingsSheet` to improve voice selection and filtering, and updated `BaseTtsSynthesizer` for better language handling.
This commit is contained in:
Aryan 2026-03-04 10:16:32 +05:30 • committed by GitHub
parent 1ce353ad44
commit 3dc1843801
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GPG key ID: B5690EEEBB952194
10 changed files with 869 additions and 150 deletions
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68
app/src/main/java/com/aryan/reader/tts/TtsPlaybackManager.kt
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@ -80,7 +80,6 @@ class TtsPlaybackManager(
private val prefetchingJobs = mutableMapOf<Int, Job>()
private var wordTrackingJob: Job? = null
private var preparationJob: Job? = null
private var isChangingConfig = false
enum class TtsMode {
CLOUD, BASE
@ -98,7 +97,6 @@ class TtsPlaybackManager(
val sessionEndedByStop: Boolean = false,
val currentWordSourceCfi: String? = null,
val currentWordStartOffset: Int = -1,
val isChangingConfig: Boolean = false,
val sessionFinished: Boolean = false,
val playbackSource: String? = null
)
@ -211,29 +209,8 @@ class TtsPlaybackManager(
private fun handleChangeTtsMode(newMode: TtsMode) {
if (currentTtsMode == newMode) return
preparationJob?.cancel()
isChangingConfig = true
val wasPlaying = player.isPlaying
val currentChunkIndex = player.currentMediaItem?.mediaId?.toIntOrNull()
val currentPosition = player.currentPosition
currentTtsMode = newMode
if (textChunks.isEmpty()) {
_ttsState.value = _ttsState.value.copy(isPlaying = false)
isChangingConfig = false
return
}
_ttsState.value = _ttsState.value.copy(isLoading = true, isPlaying = false, isChangingConfig = true)
player.stop()
player.clearMediaItems()
prefetchingJobs.values.forEach { it.cancel() }
prefetchingJobs.clear()
scope.launch {
clearAudioFiles()
}
preparationJob = scope.launch {
val startIndex = currentChunkIndex ?: 0
prepareAndPlayFirstChunk(startAtIndex = startIndex, playWhenReady = wasPlaying, startAtPosition = currentPosition)
}
Timber.d("TTS Mode changed to $newMode (pending next start)")
}
private fun handleStartTts(
@ -245,10 +222,6 @@ class TtsPlaybackManager(
ttsMode: TtsMode,
playbackSource: String?
) {
if (isChangingConfig) {
Timber.w("Ignoring START command because a config change is already in progress.")
return
}
if (chunks.isEmpty()) {
_ttsState.value = _ttsState.value.copy(errorMessage = "No text to read.")
return
@ -269,36 +242,15 @@ class TtsPlaybackManager(
private fun handleChangeSpeaker(newSpeakerId: String) {
if (currentSpeakerId == newSpeakerId) return
preparationJob?.cancel()
isChangingConfig = true
val wasPlaying = player.isPlaying
val currentChunkIndex = player.currentMediaItem?.mediaId?.toIntOrNull()
val currentPosition = player.currentPosition
currentSpeakerId = newSpeakerId
if (textChunks.isEmpty()) {
_ttsState.value = _ttsState.value.copy(speakerId = newSpeakerId)
isChangingConfig = false
return
}
_ttsState.value = _ttsState.value.copy(speakerId = newSpeakerId, isLoading = true, isPlaying = false, isChangingConfig = true)
player.stop()
player.clearMediaItems()
prefetchingJobs.values.forEach { it.cancel() }
prefetchingJobs.clear()
scope.launch {
clearAudioFiles()
}
preparationJob = scope.launch {
val startIndex = currentChunkIndex ?: 0
prepareAndPlayFirstChunk(startAtIndex = startIndex, playWhenReady = wasPlaying, startAtPosition = currentPosition)
}
_ttsState.value = _ttsState.value.copy(speakerId = newSpeakerId)
Timber.d("Speaker changed to $newSpeakerId (pending next start)")
}
private suspend fun prepareAndPlayFirstChunk(startAtIndex: Int = 0, playWhenReady: Boolean = true, startAtPosition: Long = 0L) {
val firstChunk = textChunks.getOrNull(startAtIndex)
if (firstChunk == null) {
_ttsState.value = _ttsState.value.copy(isLoading = false, errorMessage = "Error starting playback.", isChangingConfig = false)
withContext(Dispatchers.Main) { isChangingConfig = false }
_ttsState.value = _ttsState.value.copy(isLoading = false, errorMessage = "Error starting playback.")
return
}
@ -323,20 +275,17 @@ class TtsPlaybackManager(
player.seekTo(startAtPosition)
}
player.playWhenReady = playWhenReady
isChangingConfig = false
_ttsState.value = _ttsState.value.copy(
isLoading = false,
isPlaying = playWhenReady,
currentText = serverText,
sourceCfi = updatedChunk.sourceCfi,
startOffsetInSource = updatedChunk.startOffsetInSource,
isChangingConfig = false
startOffsetInSource = updatedChunk.startOffsetInSource
)
}
prefetchNextChunkAudio(startAtIndex)
} else {
withContext(Dispatchers.Main) { isChangingConfig = false }
_ttsState.value = _ttsState.value.copy(isLoading = false, errorMessage = "Failed to load audio.", isChangingConfig = false)
_ttsState.value = _ttsState.value.copy(isLoading = false, errorMessage = "Failed to load audio.")
}
}
@ -456,7 +405,6 @@ class TtsPlaybackManager(
if (isLastChunkInSession || textChunks.isEmpty()) {
nextState = nextState.copy(sessionFinished = true)
} else {
// Check if prefetch is active for the next chunk
val nextIdx = currentChunkIndex + 1
val isPrefetching = prefetchingJobs.containsKey(nextIdx)
@ -472,9 +420,6 @@ class TtsPlaybackManager(
_ttsState.value = nextState
if (!isPlaying && player.playbackState == Player.STATE_IDLE) {
if (isChangingConfig) {
return
}
if (!nextState.sessionEndedByStop) {
handleStopTts(userInitiated = true)
}
@ -620,7 +565,6 @@ class TtsPlaybackManager(
putBoolean("sessionEndedByStop", state.sessionEndedByStop)
putString("currentWordSourceCfi", state.currentWordSourceCfi)
putInt("currentWordStartOffset", state.currentWordStartOffset)
putBoolean("isChangingConfig", state.isChangingConfig)
putBoolean("sessionFinished", state.sessionFinished)
putString("playbackSource", state.playbackSource)
}