handle playing media sounds

- add MediaSoundHelper to separate logic for playing media action sounds
- add support for playing media action sounds (shutter, start and stop recording) in CameraXPreview

app/src/main/kotlin/com/simplemobiletools/camera/activities/MainActivity.kt

@@ -39,6 +39,7 @@ import com.simplemobiletools.commons.helpers.PERMISSION_RECORD_AUDIO
 import com.simplemobiletools.commons.helpers.PERMISSION_WRITE_STORAGE
 import com.simplemobiletools.commons.helpers.REFRESH_PATH
 import com.simplemobiletools.commons.models.Release
+import java.util.concurrent.TimeUnit
 import kotlinx.android.synthetic.main.activity_main.btn_holder
 import kotlinx.android.synthetic.main.activity_main.capture_black_screen
 import kotlinx.android.synthetic.main.activity_main.change_resolution
@@ -549,6 +550,24 @@ class MainActivity : SimpleActivity(), PhotoProcessor.MediaSavedListener, Camera
         updateFlashlightState(flashMode)
     }
 
+    override fun onVideoRecordingStarted() {
+        shutter.setImageResource(R.drawable.ic_video_stop)
+        toggle_camera.beInvisible()
+        video_rec_curr_timer.beVisible()
+    }
+
+    override fun onVideoRecordingStopped() {
+        shutter.setImageResource(R.drawable.ic_video_rec)
+        video_rec_curr_timer.text = 0.getFormattedDuration()
+        video_rec_curr_timer.beGone()
+        toggle_camera.beVisible()
+    }
+
+    override fun onVideoDurationChanged(durationNanos: Long) {
+        val seconds = TimeUnit.NANOSECONDS.toSeconds(durationNanos).toInt()
+        video_rec_curr_timer.text = seconds.getFormattedDuration()
+    }
+
     fun setRecordingState(isRecording: Boolean) {
         runOnUiThread {
             if (isRecording) {

app/src/main/kotlin/com/simplemobiletools/camera/helpers/MediaSoundHelper.kt

@@ -0,0 +1,25 @@
+package com.simplemobiletools.camera.helpers
+
+import android.media.MediaActionSound
+
+class MediaSoundHelper {
+    private val mediaActionSound = MediaActionSound()
+
+    fun loadSounds() {
+        mediaActionSound.load(MediaActionSound.START_VIDEO_RECORDING)
+        mediaActionSound.load(MediaActionSound.STOP_VIDEO_RECORDING)
+        mediaActionSound.load(MediaActionSound.SHUTTER_CLICK)
+    }
+
+    fun playShutterSound() {
+        mediaActionSound.play(MediaActionSound.SHUTTER_CLICK)
+    }
+
+    fun playStartVideoRecordingSound() {
+        mediaActionSound.play(MediaActionSound.START_VIDEO_RECORDING)
+    }
+
+    fun playStopVideoRecordingSound() {
+        mediaActionSound.play(MediaActionSound.STOP_VIDEO_RECORDING)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/camera/implementations/CameraXPreview.kt

@@ -37,6 +37,7 @@ import com.simplemobiletools.camera.R
 import com.simplemobiletools.camera.extensions.config
 import com.simplemobiletools.camera.extensions.toAppFlashMode
 import com.simplemobiletools.camera.extensions.toCameraXFlashMode
+import com.simplemobiletools.camera.helpers.MediaSoundHelper
 import com.simplemobiletools.camera.interfaces.MyPreview
 import com.simplemobiletools.commons.extensions.showErrorToast
 import com.simplemobiletools.commons.extensions.toast
@@ -63,6 +64,7 @@ class CameraXPreview(
     private val config = activity.config
     private val contentResolver = activity.contentResolver
     private val mainExecutor = activity.mainExecutor
+    private val mediaSoundHelper = MediaSoundHelper()
     private val windowMetricsCalculator = WindowMetricsCalculator.getOrCreate()
     private val orientationEventListener = object : OrientationEventListener(activity, SensorManager.SENSOR_DELAY_NORMAL) {
         @SuppressLint("RestrictedApi")
@@ -109,6 +111,7 @@ class CameraXPreview(
 
     init {
         bindToLifeCycle()
+        mediaSoundHelper.loadSounds()
         viewFinder.doOnLayout {
             startCamera()
         }
@@ -315,6 +318,7 @@ class CameraXPreview(
             .setMetadata(metadata)
             .build()
 
+
         imageCapture.takePicture(outputOptions, mainExecutor, object : OnImageSavedCallback {
             override fun onImageSaved(outputFileResults: OutputFileResults) {
                 listener.toggleBottomButtons(false)
@@ -327,6 +331,7 @@ class CameraXPreview(
                 Log.e(TAG, "Error", exception)
             }
         })
+        playShutterSoundIfEnabled()
     }
 
     override fun initPhotoMode() {
@@ -368,15 +373,25 @@ class CameraXPreview(
             .withAudioEnabled()
             .start(mainExecutor) { recordEvent ->
                 Log.d(TAG, "recordEvent=$recordEvent ")
-                if (recordEvent !is VideoRecordEvent.Status) {
-                    recordingState = recordEvent
-                }
+                recordingState = recordEvent
+                when(recordEvent){
+                    is VideoRecordEvent.Start -> {
+                        playStartVideoRecordingSoundIfEnabled()
+                        listener.onVideoRecordingStarted()
+                    }
 
-                if (recordEvent is VideoRecordEvent.Finalize) {
-                    if (recordEvent.hasError()) {
-                        // TODO: Handle errors
-                    } else {
-                        listener.onMediaCaptured(recordEvent.outputResults.outputUri)
+                    is VideoRecordEvent.Status -> {
+                        listener.onVideoDurationChanged(recordEvent.recordingStats.recordedDurationNanos)
+                    }
+
+                    is VideoRecordEvent.Finalize -> {
+                        playStopVideoRecordingSoundIfEnabled()
+                        listener.onVideoRecordingStopped()
+                        if (recordEvent.hasError()) {
+                            // TODO: Handle errors
+                        } else {
+                            listener.onMediaCaptured(recordEvent.outputResults.outputUri)
+                        }
                     }
                 }
             }
@@ -391,4 +406,22 @@ class CameraXPreview(
             "VID_$timestamp"
         }
     }
+
+    private fun playShutterSoundIfEnabled(){
+        if(config.isSoundEnabled){
+            mediaSoundHelper.playShutterSound()
+        }
+    }
+
+    private fun playStartVideoRecordingSoundIfEnabled(){
+        if(config.isSoundEnabled){
+            mediaSoundHelper.playStartVideoRecordingSound()
+        }
+    }
+
+    private fun playStopVideoRecordingSoundIfEnabled(){
+        if(config.isSoundEnabled){
+            mediaSoundHelper.playStopVideoRecordingSound()
+        }
+    }
 }

app/src/main/kotlin/com/simplemobiletools/camera/implementations/CameraXPreviewListener.kt

@@ -10,4 +10,7 @@ interface CameraXPreviewListener {
     fun toggleBottomButtons(hide:Boolean)
     fun onMediaCaptured(uri: Uri)
     fun onChangeFlashMode(flashMode: Int)
+    fun onVideoRecordingStarted()
+    fun onVideoRecordingStopped()
+    fun onVideoDurationChanged(durationNanos: Long)
 }

app/src/main/kotlin/com/simplemobiletools/camera/views/CameraPreview.kt

@@ -96,7 +96,7 @@ class CameraPreview : ViewGroup, TextureView.SurfaceTextureListener, MyPreview {
     private val mCameraToPreviewMatrix = Matrix()
     private val mPreviewToCameraMatrix = Matrix()
     private val mCameraOpenCloseLock = Semaphore(1)
-    private val mMediaActionSound = MediaActionSound()
+    private val mediaSoundHelper = MediaSoundHelper()
     private var mZoomRect: Rect? = null
 
     constructor(context: Context) : super(context)
@@ -114,7 +114,7 @@ class CameraPreview : ViewGroup, TextureView.SurfaceTextureListener, MyPreview {
 
         mUseFrontCamera = false
         mIsInVideoMode = !initPhotoMode
-        loadSounds()
+        mediaSoundHelper.loadSounds()
 
         val gestureDetector = GestureDetector(context, object : GestureDetector.SimpleOnGestureListener() {
             override fun onSingleTapConfirmed(e: MotionEvent?): Boolean {
@@ -182,12 +182,6 @@ class CameraPreview : ViewGroup, TextureView.SurfaceTextureListener, MyPreview {
         }
     }
 
-    private fun loadSounds() {
-        mMediaActionSound.load(MediaActionSound.START_VIDEO_RECORDING)
-        mMediaActionSound.load(MediaActionSound.STOP_VIDEO_RECORDING)
-        mMediaActionSound.load(MediaActionSound.SHUTTER_CLICK)
-    }
-
     @SuppressLint("MissingPermission")
     private fun openCamera(width: Int, height: Int) {
         try {
@@ -576,7 +570,7 @@ class CameraPreview : ViewGroup, TextureView.SurfaceTextureListener, MyPreview {
             }
 
             if (mActivity.config.isSoundEnabled) {
-                mMediaActionSound.play(MediaActionSound.SHUTTER_CLICK)
+                mediaSoundHelper.playShutterSound()
             }
 
             mCameraState = STATE_PICTURE_TAKEN
@@ -824,7 +818,7 @@ class CameraPreview : ViewGroup, TextureView.SurfaceTextureListener, MyPreview {
         closeCaptureSession()
         setupMediaRecorder()
         if (mActivity.config.isSoundEnabled) {
-            mMediaActionSound.play(MediaActionSound.START_VIDEO_RECORDING)
+            mediaSoundHelper.playStartVideoRecordingSound()
         }
 
         try {
@@ -853,7 +847,7 @@ class CameraPreview : ViewGroup, TextureView.SurfaceTextureListener, MyPreview {
     private fun stopRecording() {
         mCameraState = STATE_STOPING_RECORDING
         if (mActivity.config.isSoundEnabled) {
-            mMediaActionSound.play(MediaActionSound.STOP_VIDEO_RECORDING)
+            mediaSoundHelper.playStopVideoRecordingSound()
         }
 
         mIsRecording = false