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TODO
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* icona personalizzata
* README.md da compilare

## migliorie
* BINDING VIEW
* controlla progetto github per ulteriori migliorie
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@bellins14
bellins14 committed Jun 30, 2024
1 parent 38a59a5 commit 746116f
Showing 1 changed file with 95 additions and 86 deletions.
181 changes: 95 additions & 86 deletions app/src/main/java/com/example/hueharvester/MainActivity.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,8 @@ class MainActivity : AppCompatActivity() {
private lateinit var cameraPreview: SurfaceView
private var camera: Camera? = null

private var isCameraReleased = true

private var isSurfaceCreated = false
private var savedPreviewSize: IntArray? = null
private var savedPreviewFpsRange: IntArray? = null
Expand All @@ -52,7 +54,7 @@ class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
//Log.d(MAIN, "onCreate")
Log.d(MAIN, "onCreate")

setContentView(R.layout.activity_main)

Expand Down Expand Up @@ -110,22 +112,22 @@ class MainActivity : AppCompatActivity() {
if (!isIdSaved) {
// Set the data collection starting point
savedInstanceState?.let {
//Log.d(DBR, "Creation data ID from BUNDLE: ${it.getInt("creationDataID")}")
//Log.d(DBR, "Last data ID from BUNDLE: ${it.getInt("lastDataID")}")
Log.d(DBR, "Creation data ID from BUNDLE: ${it.getInt("creationDataID")}")
Log.d(DBR, "Last data ID from BUNDLE: ${it.getInt("lastDataID")}")
} ?: try {
run {
dataList.last().let {
creationDataID = it.id
lastDataID = it.id
//Log.d(DBR, "Creation data ID from ROOM: $creationDataID")
//Log.d(DBR, "Last data ID from ROOM: $lastDataID")
Log.d(DBR, "Creation data ID from ROOM: $creationDataID")
Log.d(DBR, "Last data ID from ROOM: $lastDataID")
}
}
} catch (e: NoSuchElementException) {
Log.e(DBR, "No data in the database", e)
//Log.i(DBR, "No data in the database")
//Log.d(DBR, "Creation data ID: $creationDataID")
//Log.d(DBR, "Last data ID: $lastDataID")
//Log.e(DBR, "No data in the database", e)
Log.i(DBR, "No data in the database")
Log.d(DBR, "Creation data ID: $creationDataID")
Log.d(DBR, "Last data ID: $lastDataID")
}
isIdSaved = true
}
Expand All @@ -147,7 +149,7 @@ class MainActivity : AppCompatActivity() {
if (this.id - dataList.first().id > MAX_TIME ) { // doesn't clean up if there are less than MAX_TIME data
// Clean up old data
viewModel.deleteOldData(this.id - MAX_TIME)
//Log.d(DBR, "Last ID = ${lastColor.id} : deleted too old data => id < ${lastColor.id - MAX_TIME}")
Log.d(DBR, "Last ID = ${this.id} : deleted too old data => id < ${this.id - MAX_TIME}")
}
}
}
Expand All @@ -160,112 +162,116 @@ class MainActivity : AppCompatActivity() {
* @see Camera
*/
private fun setupCameraPreview() {
//Log.v(MAIN, "Setting up camera preview")
Log.v(MAIN, "Setting up camera preview")
val holder: SurfaceHolder = cameraPreview.holder

holder.addCallback(object : SurfaceHolder.Callback {
override fun surfaceCreated(holder: SurfaceHolder) {
//Log.i(MAIN, "Surface created")
Log.i(MAIN, "Surface created")
if (!checkCameraPermission()) {
requestCameraPermission()
} else {
//Log.v(MAIN, "surfaceCreated calls initializeCameraAsync")
initializeCameraAsync(holder)
Log.v(MAIN, "surfaceCreated calls initializeCameraAsync")
initializeCamera(holder)
isSurfaceCreated = true
}
}
override fun surfaceChanged(holder: SurfaceHolder, format: Int, width: Int, height: Int) {
if (isSurfaceCreated) { // possible calling of surfaceChanged before surfaceCreated
//Log.i(MAIN, "Surface changed from [${savedPreviewSize?.get(0)} x ${savedPreviewSize?.get(1)}] to [$width x $height]")
Log.i(MAIN, "Surface changed from [${savedPreviewSize?.get(0)} x ${savedPreviewSize?.get(1)}] to [$width x $height]")
if (camera != null && (width != savedPreviewSize?.get(0) || height != savedPreviewSize?.get(
1
))
) {
//Log.v(MAIN, "surfaceChanged calls initializeCameraAsync")
Log.v(MAIN, "surfaceChanged calls initializeCameraAsync")
camera?.stopPreview()
initializeCameraAsync(holder)
initializeCamera(holder)
}
}
}
override fun surfaceDestroyed(holder: SurfaceHolder) {
//Log.d(MAIN, "Surface destroyed")
Log.d(MAIN, "Surface destroyed")
releaseCamera()
isSurfaceCreated = false
}
})
}

/** Initialize the camera asynchronously
/** Initialize the camera
* It sets the camera preview size and the preview frame rate
* @param holder the [SurfaceHolder] to set the camera preview
*
* @see Camera
* @see Camera.Parameters
* @see SurfaceHolder
*/
private fun initializeCameraAsync(holder: SurfaceHolder) {
Thread {
try {
if (camera == null) {
camera = Camera.open()
//Log.i(MAIN, "Camera opened")
}
private fun initializeCamera(holder: SurfaceHolder) {
try {
if (isCameraReleased) {
camera = Camera.open()
isCameraReleased = false
Log.i(MAIN, "Camera opened")
}

adjustCameraOrientation()
adjustCameraOrientation()

val params = camera?.parameters
val params = camera?.parameters

savedPreviewSize?.let {
//Log.v(MAIN, "Restoring preview size: ${it[0]} x ${it[1]}")
params?.setPreviewSize(it[0], it[1])
} ?: run {
val supportedPreviewSizes = params?.supportedPreviewSizes
val minPreviewSize = supportedPreviewSizes?.minByOrNull { it.width * it.height }
minPreviewSize?.let {
savedPreviewSize = intArrayOf(it.width, it.height)
params.setPreviewSize(it.width, it.height)
}
//Log.i(MAIN, "Preview size set to: ${savedPreviewSize?.get(0)} x ${savedPreviewSize?.get(1)}")
savedPreviewSize?.let {
Log.v(MAIN, "Restoring preview size: ${it[0]} x ${it[1]}")
params?.setPreviewSize(it[0], it[1])
} ?: run {
val supportedPreviewSizes = params?.supportedPreviewSizes
val minPreviewSize = supportedPreviewSizes?.minByOrNull { it.width * it.height }
minPreviewSize?.let {
savedPreviewSize = intArrayOf(it.width, it.height)
params.setPreviewSize(it.width, it.height)
}
savedPreviewFpsRange?.let {
params?.setPreviewFpsRange(it[0], it[1])
} ?: run {
val supportedPreviewFpsRanges = params?.supportedPreviewFpsRange
val minPreviewFpsRange =
supportedPreviewFpsRanges?.minByOrNull { it[Camera.Parameters.PREVIEW_FPS_MIN_INDEX] }
minPreviewFpsRange?.let {
params.setPreviewFpsRange(
it[Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
it[Camera.Parameters.PREVIEW_FPS_MAX_INDEX]
)
savedPreviewFpsRange = it
}
Log.i(
MAIN,
"Preview size set to: ${savedPreviewSize?.get(0)} x ${
savedPreviewSize?.get(1)
}"
)
}
savedPreviewFpsRange?.let {
params?.setPreviewFpsRange(it[0], it[1])
} ?: run {
val supportedPreviewFpsRanges = params?.supportedPreviewFpsRange
val minPreviewFpsRange =
supportedPreviewFpsRanges?.minByOrNull { it[Camera.Parameters.PREVIEW_FPS_MIN_INDEX] }
minPreviewFpsRange?.let {
params.setPreviewFpsRange(
it[Camera.Parameters.PREVIEW_FPS_MIN_INDEX],
it[Camera.Parameters.PREVIEW_FPS_MAX_INDEX]
)
savedPreviewFpsRange = it
}
}

camera?.apply {
parameters = params

setPreviewCallback { data, cam ->
val previewSize = cam.parameters.previewSize
val (avgRed, avgGreen, avgBlue) = calculateAverageColor(
data,
previewSize.width,
previewSize.height
)
camera?.apply {
parameters = params

manageNewData(avgRed, avgGreen, avgBlue)
}
setPreviewCallback { data, cam ->
val previewSize = cam.parameters.previewSize
val (avgRed, avgGreen, avgBlue) = calculateAverageColor(
data,
previewSize.width,
previewSize.height
)

setPreviewDisplay(holder)
startPreview()
//Log.v(MAIN, "Camera preview started")
manageNewData(avgRed, avgGreen, avgBlue)
}
Log.d(MAIN, "Camera setup successful")
} catch (e: Exception) {
releaseCamera()
Log.e(MAIN, "Camera setup failed", e)

setPreviewDisplay(holder)
startPreview()
Log.v(MAIN, "Camera preview started")
}
}.start()
Log.d(MAIN, "Camera setup successful")
} catch (e: Exception) {
releaseCamera()
Log.e(MAIN, "Camera setup failed", e)
}
}

/** Manage the new data collected from the camera
Expand Down Expand Up @@ -315,13 +321,16 @@ class MainActivity : AppCompatActivity() {
* @see Camera
*/
private fun releaseCamera() {
//Log.v(MAIN, "Releasing camera")
camera?.apply {
setPreviewCallback(null)
stopPreview()
release()
camera = null
Log.d(MAIN, "Camera released")
if (!isCameraReleased) {
Log.v(MAIN, "Releasing camera")
camera?.apply {
stopPreview()
setPreviewCallback(null)
release()
camera = null
isCameraReleased = true
Log.d(MAIN, "Camera released")
}
}
}

Expand Down Expand Up @@ -350,9 +359,9 @@ class MainActivity : AppCompatActivity() {
if (requestCode == CAMERA_REQUEST_CODE) {
if (grantResults.isNotEmpty() && (grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
Toast.makeText(this, getString(R.string.camera_permission_granted), Toast.LENGTH_SHORT).show()
//Log.i(MAIN, "Camera permission granted")
//Log.v(MAIN, "requestCameraPermission calls initializeCameraAsync")
initializeCameraAsync(cameraPreview.holder)
Log.i(MAIN, "Camera permission granted")
Log.v(MAIN, "requestCameraPermission calls initializeCameraAsync")
initializeCamera(cameraPreview.holder)
} else {
Toast.makeText(this, getString(R.string.camera_permission_required), Toast.LENGTH_SHORT).show()
}
Expand Down Expand Up @@ -413,20 +422,20 @@ class MainActivity : AppCompatActivity() {
return Triple(avgRed, avgGreen, avgBlue)
} catch (e: NullPointerException) {
Log.e(MAIN, "Error calculating average color")
//Log.i(MAIN, "Returning default values due to Error")
Log.i(MAIN, "Returning default values due to Error")
return Triple(0, 0, 0)
}
}

override fun onPause() {
//Log.d(MAIN, "onPause")
Log.d(MAIN, "onPause")
super.onPause()
releaseCamera()
}

override fun onSaveInstanceState(outState: Bundle) {
super.onSaveInstanceState(outState)
//Log.d(MAIN, "onSaveInstanceState")
Log.d(MAIN, "onSaveInstanceState")

outState.putInt("creationDataID", creationDataID)
outState.putInt("lastDataID", lastDataID)
Expand All @@ -449,7 +458,7 @@ class MainActivity : AppCompatActivity() {

override fun onRestoreInstanceState(savedInstanceState: Bundle) {
super.onRestoreInstanceState(savedInstanceState)
//Log.d(MAIN, "onRestoreInstanceState")
Log.d(MAIN, "onRestoreInstanceState")

creationDataID = savedInstanceState.getInt("creationDataID")
lastDataID = savedInstanceState.getInt("lastDataID")
Expand Down

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