3850491b9f
Accessing previewView.bitmap was throwing an error because it wasn't being done on the main thread. Any access to previewView needs to be done on the main (UI) thread. This commit fixes the issue by ensuring this access is now run on the main thread. Fixes #547
61 lines
2.0 KiB
Kotlin
61 lines
2.0 KiB
Kotlin
package com.mrousavy.camera
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import android.graphics.Bitmap
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import androidx.exifinterface.media.ExifInterface
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import com.facebook.react.bridge.Arguments
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import com.facebook.react.bridge.ReadableMap
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import com.facebook.react.bridge.WritableMap
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import com.mrousavy.camera.utils.buildMetadataMap
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.coroutineScope
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import kotlinx.coroutines.withContext
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import java.io.File
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import java.io.FileOutputStream
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import kotlinx.coroutines.guava.await
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suspend fun CameraView.takeSnapshot(options: ReadableMap): WritableMap = coroutineScope {
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val camera = camera ?: throw com.mrousavy.camera.CameraNotReadyError()
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val enableFlash = options.getString("flash") == "on"
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try {
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if (enableFlash) {
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camera.cameraControl.enableTorch(true).await()
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}
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val bitmap = withContext(coroutineScope.coroutineContext) {
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previewView.bitmap ?: throw CameraNotReadyError()
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}
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val quality = if (options.hasKey("quality")) options.getInt("quality") else 100
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val file: File
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val exif: ExifInterface
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@Suppress("BlockingMethodInNonBlockingContext")
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withContext(Dispatchers.IO) {
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file = File.createTempFile("mrousavy", ".jpg", context.cacheDir).apply { deleteOnExit() }
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FileOutputStream(file).use { stream ->
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bitmap.compress(Bitmap.CompressFormat.JPEG, quality, stream)
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}
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exif = ExifInterface(file)
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}
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val map = Arguments.createMap()
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map.putString("path", file.absolutePath)
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map.putInt("width", bitmap.width)
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map.putInt("height", bitmap.height)
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map.putBoolean("isRawPhoto", false)
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val skipMetadata =
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if (options.hasKey("skipMetadata")) options.getBoolean("skipMetadata") else false
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val metadata = if (skipMetadata) null else exif.buildMetadataMap()
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map.putMap("metadata", metadata)
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return@coroutineScope map
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} finally {
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if (enableFlash) {
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// reset to `torch` property
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camera.cameraControl.enableTorch(this@takeSnapshot.torch == "on")
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}
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}
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}
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