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package at.bitfire.vcard4android.datarow
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.media.ThumbnailUtils
import android.net.Uri
import android.provider.ContactsContract.CommonDataKinds.Photo
import at.bitfire.vcard4android.BatchOperation
import at.bitfire.vcard4android.Constants
import at.bitfire.vcard4android.Contact
import java.io.ByteArrayOutputStream
import java.util.*
class PhotoBuilder(mimeType: String, dataRowUri: Uri, rawContactId: Long?, contact: Contact)
: DataRowBuilder(mimeType, dataRowUri, rawContactId, contact) {
companion object {
val MAX_PHOTO_BLOB_SIZE = 950*1024 // IPC limit 1 MB, minus 50 kB for the protocol itself = 950 kB
val MAX_RESIZE_PASSES = 10
}
override fun build(): List<BatchOperation.CpoBuilder> {
// The following approach would be correct, but it doesn't work:
// the ContactsProvider handler will process the image in background and update
// the raw contact with the new photo ID when it's finished, setting it to dirty again!
// See https://code.google.com/p/android/issues/detail?id=226875
/*Uri photoUri = addressBook.syncAdapterURI(Uri.withAppendedPath(
ContentUris.withAppendedId(RawContacts.CONTENT_URI, id),
RawContacts.DisplayPhoto.CONTENT_DIRECTORY));
Constants.log.debug("Setting local photo " + photoUri);
try {
@Cleanup AssetFileDescriptor fd = addressBook.provider.openAssetFile(photoUri, "w");
@Cleanup OutputStream stream = fd.createOutputStream();
if (stream != null)
stream.write(photo);
else
Constants.log.warn("Couldn't create local contact photo file");
} catch (IOException|RemoteException e) {
Constants.log.warn("Couldn't write local contact photo file", e);
}*/
val result = LinkedList<BatchOperation.CpoBuilder>()
contact.photo?.let { photo ->
val resized = resizeIfNecessary(photo)
if (resized != null)
result += newDataRow().withValue(Photo.PHOTO, resized)
}
return result
}
private fun resizeIfNecessary(blob: ByteArray): ByteArray? {
if (blob.size > MAX_PHOTO_BLOB_SIZE) {
Constants.log.fine("Photo larger than $MAX_PHOTO_BLOB_SIZE bytes, resizing")
val bitmap = BitmapFactory.decodeByteArray(blob, 0, blob.size)
if (bitmap == null) {
Constants.log.warning("Image decoding failed")
return null
}
var size = Math.min(bitmap.width, bitmap.height).toFloat()
var resized: ByteArray = blob
var count = 0
var quality = 98
do {
if (++count > MAX_RESIZE_PASSES) {
Constants.log.warning("Couldn't resize photo within $MAX_RESIZE_PASSES passes")
return null
}
val sizeInt = size.toInt()
val thumb = ThumbnailUtils.extractThumbnail(bitmap, sizeInt, sizeInt)
val baos = ByteArrayOutputStream()
if (thumb.compress(Bitmap.CompressFormat.JPEG, quality, baos))
resized = baos.toByteArray()
size *= .9f
quality--
} while (resized.size >= MAX_PHOTO_BLOB_SIZE)
return resized
} else
return blob
}
object Factory: DataRowBuilder.Factory<PhotoBuilder> {
override fun mimeType() = Photo.CONTENT_ITEM_TYPE
override fun newInstance(dataRowUri: Uri, rawContactId: Long?, contact: Contact) =
PhotoBuilder(mimeType(), dataRowUri, rawContactId, contact)
}
}
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