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Lossless rotation

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Possible issue: even though most EXIF tags keep their original value, some of them are changed by android.media.ExifInterface. it.sephiroth.android.library.exif2.ExifInterface did the same, but to different values and/or with different results.
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Guillaume 2017-11-01 04:52:29 +01:00 committed by GitHub
parent bc9f62db40
commit 25bd77bd12
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1 changed files with 48 additions and 8 deletions
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56
app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
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@ -45,7 +45,9 @@ import com.simplemobiletools.gallery.helpers.*
import com.simplemobiletools.gallery.models.Medium import com.simplemobiletools.gallery.models.Medium
import kotlinx.android.synthetic.main.activity_medium.* import kotlinx.android.synthetic.main.activity_medium.*
import java.io.File import java.io.File
import java.io.OutputStream import java.io.FileInputStream
import java.io.FileOutputStream
import java.io.FileNotFoundException
import java.util.* import java.util.*
class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, ViewPagerFragment.FragmentListener { class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, ViewPagerFragment.FragmentListener {
@ -463,7 +465,12 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
return@getFileOutputStream return@getFileOutputStream
} }
saveFile(tmpFile, bitmap, it) if (currPath.isImageFast() && !currPath.isPng()) { // Is always JPEG?
saveRotation(currPath, tmpFile)
} else {
saveFile(tmpFile, bitmap, it as FileOutputStream)
}
if (needsStupidWritePermissions(selectedFile.absolutePath)) { if (needsStupidWritePermissions(selectedFile.absolutePath)) {
deleteFile(selectedFile) {} deleteFile(selectedFile) {}
} }
@ -471,6 +478,12 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
renameFile(tmpFile, selectedFile) { renameFile(tmpFile, selectedFile) {
deleteFile(tmpFile) {} deleteFile(tmpFile) {}
} }
it.flush()
it.close()
toast(R.string.file_saved)
mRotationDegrees = 0f
invalidateOptionsMenu()
} }
} catch (e: OutOfMemoryError) { } catch (e: OutOfMemoryError) {
toast(R.string.out_of_memory_error) toast(R.string.out_of_memory_error)
@ -483,18 +496,45 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
} }
} }
private fun saveFile(file: File, bitmap: Bitmap, out: OutputStream) { private fun saveFile(file: File, bitmap: Bitmap, out: FileOutputStream) {
val matrix = Matrix() val matrix = Matrix()
matrix.postRotate(mRotationDegrees) matrix.postRotate(mRotationDegrees)
val bmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true) val bmp = Bitmap.createBitmap(bitmap, 0, 0, bitmap.width, bitmap.height, matrix, true)
bmp.compress(file.getCompressionFormat(), 90, out) bmp.compress(file.getCompressionFormat(), 90, out)
out.flush()
out.close()
toast(R.string.file_saved)
mRotationDegrees = 0f
invalidateOptionsMenu()
} }
private fun saveRotation(input: String, out: File) {
var inputStream: FileInputStream? = null
var outputStream: FileOutputStream? = null
try {
inputStream = FileInputStream(input)
outputStream = FileOutputStream(out)
inputStream.copyTo(outputStream)
} catch (ignored: FileNotFoundException) {
} finally {
inputStream?.close()
outputStream?.close()
}
if (mRotationDegrees != 0f) {
val exif = ExifInterface(out.absolutePath)
var orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL)
var orientationDegrees = when (orientation) {
8 -> 270f
3 -> 180f
6 -> 90f
else -> 0f
}
orientationDegrees = (orientationDegrees + mRotationDegrees) % 360
orientation = when (orientationDegrees) {
90f -> 6
180f -> 3
270f -> 8
else -> 1
}
exif.setAttribute(ExifInterface.TAG_ORIENTATION, ""+ orientation)
exif.saveAttributes()
}
}
private fun isShowHiddenFlagNeeded(): Boolean { private fun isShowHiddenFlagNeeded(): Boolean {
val file = File(mPath) val file = File(mPath)
if (file.isHidden) if (file.isHidden)