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fix: Fix image rotated when flipped in Android (#719)

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Muhammad Aditya Hilmy 2022-01-11 17:52:50 +07:00 committed by GitHub
parent 17b33de4d7
commit 0ce01b9543
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1 changed files with 29 additions and 1 deletions
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android/src/main/java/com/mrousavy/camera/utils/ImageProxy.save.kt
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@ -6,6 +6,7 @@ import android.graphics.ImageFormat
import android.graphics.Matrix
import android.util.Log
import androidx.camera.core.ImageProxy
import androidx.exifinterface.media.ExifInterface
import com.mrousavy.camera.CameraView
import com.mrousavy.camera.InvalidFormatError
import java.io.ByteArrayOutputStream
@ -43,7 +44,34 @@ fun flip(imageBytes: ByteArray, imageWidth: Int): ByteArray {
fun flipImage(imageBytes: ByteArray): ByteArray {
val bitmap = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size)
val matrix = Matrix()
matrix.preScale(-1f, 1f)
val exif = ExifInterface(imageBytes.inputStream())
val orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED)
when (orientation) {
ExifInterface.ORIENTATION_ROTATE_180 -> {
matrix.setRotate(180f)
matrix.postScale(-1f, 1f)
}
ExifInterface.ORIENTATION_FLIP_VERTICAL -> {
matrix.setRotate(180f)
}
ExifInterface.ORIENTATION_TRANSPOSE -> {
matrix.setRotate(90f)
}
ExifInterface.ORIENTATION_ROTATE_90 -> {
matrix.setRotate(90f)
matrix.postScale(-1f, 1f)
}
ExifInterface.ORIENTATION_TRANSVERSE -> {
matrix.setRotate(-90f)
}
ExifInterface.ORIENTATION_ROTATE_270 -> {
matrix.setRotate(-90f)
matrix.postScale(-1f, 1f)
}
}
val newBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
val stream = ByteArrayOutputStream()
newBitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream)