TiffConverter.convertJpgTiffFd fails to convert image with a CantOpenFileException from cache. #58
Description
I have a jetpack compose app with the following logic that triggers to allow user to select an image from the gallery and then copies it to cache:
val context = LocalContext.current
var progressString by remember { mutableStateOf<String?>(null) }
val launcher = rememberLauncherForActivityResult(contract = ActivityResultContracts.GetContent()) {
if (it != null) {
context.contentResolver.openInputStream(it)?.use { input ->
val file = File(context.cacheDir, "copiedimage.jpg")
FileOutputStream(file).use { output ->
val buffer = ByteArray(4 * 1024)
var read: Int
while (input.read(buffer).also { read = it } != -1) {
output.write(buffer, 0, read)
}
output.flush()
}
val fd = context.contentResolver.openFileDescriptor(file.toUri(), "r")
if (fd != null) {
TiffConverterObject.convertToTiffAndSaveInCache(fd, context.cacheDir) { progress ->
progressString = "${progress * 100}%"
}
}
}
}
}
Button(
modifier = Modifier
.width(250.dp)
.padding(bottom = 8.dp),
onClick = {
launcher.launch("image/*")
}
) {
Text(text = "Choose image from gallery")
}
I see the copiedimage.jpeg in the cache directory and I've saved it to my desktop and opened it so I know that's being saved correctly:
This is my TiffConverterObject class which uses this library to convert the image to tiff but it keeps crashing returning a CantOpenFileException:
object TiffConverterObject {
fun convertToTiffAndSaveInCache(inputFD: ParcelFileDescriptor, outputFD: File, progress: (Double) -> Unit) {
val options = ConverterOptions()
options.throwExceptions = true
options.availableMemory = (128 * 1024 * 1024).toLong()
options.compressionScheme = CompressionScheme.LZW
options.appendTiff = false
val file = File.createTempFile("output-temp", ".tiff", outputFD)
val inputFd = inputFD.fd
inputFD.close()
val fd = App.instance.contentResolver.openFileDescriptor(file.toUri(), "rwt")
if (fd != null) {
val outputFd = fd.fd
fd.close()
val saved = TiffConverter.convertJpgTiffFd(inputFd, outputFd, options) { processedPixels, totalPixels ->
progress(processedPixels.toDouble() / totalPixels)
}
println("\n\t-----> Saved: $saved")
}
}
}
I've tried all combinations of r,rw,rwt modes on both files as well as .jpg, .jpeg, .tif, and .tiff extensions with no luck. Any help would be greatly appreciated.