AttachmentRegionDecoder.java 文件源码

@RequiresApi(api = Build.VERSION_CODES.GINGERBREAD_MR1)
@Override
public Point init(Context context, Uri uri) throws Exception {
  Log.w(TAG, "Init!");
  if (!PartAuthority.isLocalUri(uri)) {
    passthrough = new SkiaImageRegionDecoder();
    return passthrough.init(context, uri);
  }

  MasterSecret masterSecret = KeyCachingService.getMasterSecret(context);

  if (masterSecret == null) {
    throw new IllegalStateException("No master secret available...");
  }

  InputStream inputStream = PartAuthority.getAttachmentStream(context, masterSecret, uri);

  this.bitmapRegionDecoder = BitmapRegionDecoder.newInstance(inputStream, false);
  inputStream.close();

  return new Point(bitmapRegionDecoder.getWidth(), bitmapRegionDecoder.getHeight());
}