Myzel394/Alibi
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Myzel394 2023-08-17 11:08:14 +02:00
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commit 20b466872b
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2 changed files with 104 additions and 36 deletions
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69
app/src/main/java/app/myzel394/alibi/CameraHandler.kt
View File

@ -6,27 +6,18 @@ import android.graphics.ImageFormat
import android.hardware.camera2.CameraCaptureSession
import android.hardware.camera2.CameraCharacteristics
import android.hardware.camera2.CameraDevice
import android.hardware.camera2.CameraDevice.StateCallback.ERROR_CAMERA_DEVICE
import android.hardware.camera2.CameraDevice.StateCallback.ERROR_CAMERA_SERVICE
import android.hardware.camera2.CameraManager
import android.hardware.camera2.params.OutputConfiguration
import android.hardware.camera2.params.SessionConfiguration
import android.media.Image
import android.media.ImageReader
import android.os.Build
import android.os.Handler
import android.os.HandlerThread
import android.util.Log
import android.util.Size
import android.view.Surface
import androidx.annotation.RequiresApi
import androidx.core.content.ContentProviderCompat.requireContext
import androidx.core.content.ContextCompat
import androidx.core.content.ContextCompat.getSystemService
import kotlinx.coroutines.suspendCancellableCoroutine
import java.io.File
import java.util.concurrent.ArrayBlockingQueue
import java.util.concurrent.Executor
import java.util.logging.Logger
import kotlin.coroutines.resume
import kotlin.coroutines.resumeWithException
@ -60,7 +51,25 @@ class CameraHandler(
}
@RequiresApi(Build.VERSION_CODES.P)
public suspend fun takePhoto(
suspend fun startPreview(
surface: Surface,
) {
val outputs = listOf(surface)
val session = createCaptureSession(outputs)
val captureRequest = device.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW)
captureRequest.addTarget(surface)
session.setRepeatingRequest(captureRequest.build(), null, handler)
}
fun stopPreview() {
device.close()
thread.quitSafely()
}
@RequiresApi(Build.VERSION_CODES.P)
suspend fun takePhoto(
outputFile: File,
) {
Log.d("Alibi", "Taking photo")
@ -108,6 +117,44 @@ class CameraHandler(
Log.d("Alibi", "Success!")
}
private fun getOptimalPreviewSize(sizes: List<Size>, w: Int, h: Int): Size {
val ASPECT_TOLERANCE = 0.1
val targetRatio = h.toDouble() / w
var optimalSize: Size? = null
var minDiff = Double.MAX_VALUE
for (size in sizes) {
val ratio: Double = size.width as Double / size.height
if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue
if (Math.abs(size.height - h) < minDiff) {
optimalSize = size
minDiff = Math.abs(size.height - h).toDouble()
}
}
if (optimalSize == null) {
minDiff = Double.MAX_VALUE
for (size in sizes) {
if (Math.abs(size.height - h) < minDiff) {
optimalSize = size
minDiff = Math.abs(size.height - h).toDouble()
}
}
}
return optimalSize!!
}
fun getPreviewSize(): Size {
val characteristics = manager.getCameraCharacteristics(CameraCharacteristics.LENS_FACING_BACK.toString())
return characteristics
.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)!!
.getOutputSizes(ImageFormat.JPEG)
.maxByOrNull { it.height * it.width }!!
}
companion object {
const val IMAGE_BUFFER_SIZE = 3

71
app/src/main/java/app/myzel394/alibi/ui/screens/RecorderScreen.kt
View File

@ -13,6 +13,8 @@ import android.media.ImageReader
import android.os.Handler
import android.os.HandlerThread
import android.util.Log
import android.view.SurfaceHolder
import android.view.SurfaceView
import android.view.ViewGroup
import android.view.ViewGroup.LayoutParams.MATCH_PARENT
import androidx.camera.core.ImageCapture
@ -71,41 +73,61 @@ fun RecorderScreen(
) {
val context = LocalContext.current
val lifecycle = LocalLifecycleOwner.current
val scope = rememberCoroutineScope()
Scaffold(
topBar = {
TopAppBar(
title = {
Text(stringResource(R.string.app_name))
},
actions = {
IconButton(
onClick = {
navController.navigate(Screen.Settings.route)
},
) {
Icon(
Icons.Default.Settings,
contentDescription = null
var camera by remember { mutableStateOf<CameraHandler?>(null) }
AndroidView(
factory = {context ->
val surfaceView = SurfaceView(context).apply {
layoutParams = ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT,
)
}
surfaceView.holder.addCallback(object : SurfaceHolder.Callback {
override fun surfaceCreated(holder: SurfaceHolder) {
scope.launch {
camera = CameraHandler.openCamera(context)
val previewSize = camera!!.getPreviewSize()
holder.setFixedSize(
1080,
1920,
)
camera!!.startPreview(holder.surface)
}
}
)
},
) { padding ->
val scope = rememberCoroutineScope()
// Wait for `CameraHadler.openCamera`
var camera by remember { mutableStateOf<CameraHandler?>(null) }
override fun surfaceChanged(
holder: SurfaceHolder,
format: Int,
width: Int,
height: Int
) {
}
override fun surfaceDestroyed(holder: SurfaceHolder) {
scope.launch {
camera!!.stopPreview()
}
}
})
surfaceView
}
)
Button(
modifier = Modifier
.padding(padding),
onClick = {
scope.launch {
if (camera == null) {
camera = CameraHandler.Companion.openCamera(context)
camera = CameraHandler.openCamera(context)
}
camera!!.takePhoto(
@ -180,5 +202,4 @@ fun RecorderScreen(
)
}
*/
}
}