public void read() throws IOException {
if (!isDataRead) {
int expectedLen = 9;
int offset = 0;
if (data.length >= expectedLen) {
majorVersion = data[offset++] & 0xff;
minorVersion = data[offset++] & 0xff;
densityUnit = data[offset++] & 0xff;
xDensity = IOUtils.readUnsignedShortMM(data, offset);
offset += 2;
yDensity = IOUtils.readUnsignedShortMM(data, offset);
offset += 2;
thumbnailWidth = data[offset++] & 0xff;
thumbnailHeight = data[offset] & 0xff;
if (thumbnailWidth != 0 && thumbnailHeight != 0) {
containsThumbnail = true;
// Extract the thumbnail
// Create a Bitmap
int size = 3 * thumbnailWidth * thumbnailHeight;
int[] colors = MetadataUtils.toARGB(ArrayUtils.subArray(data, expectedLen, size));
thumbnail =
new JFIFThumbnail(
Bitmap.createBitmap(
colors, thumbnailWidth, thumbnailHeight, Bitmap.Config.ARGB_8888));
}
}
isDataRead = true;
}
}
