// returns a value specifying some kind of average brightness in the image.
protected int getAverageBrightness(BufferedImage img) {
Raster r = img.getData();
int total = 0;
for (int y = 0; y < r.getHeight(); y++) {
for (int x = 0; x < r.getWidth(); x++) {
total += r.getSample(r.getMinX() + x, r.getMinY() + y, 0);
}
}
return (int) (total / ((r.getWidth() / factorD) * (r.getHeight() / factorD)));
}
private Raster clipRowToRect(
final Raster raster, final Rectangle rect, final int[] bands, final int xSub) {
if (rect.contains(raster.getMinX(), 0, raster.getWidth(), 1)
&& xSub == 1
&& bands == null /* TODO: Compare bands with that of raster */) {
return raster;
}
return raster.createChild(rect.x / xSub, 0, rect.width / xSub, 1, 0, 0, bands);
}
/**
* Ipp filter.
*
* @param src the src.
* @param dst the dst.
* @param imageType the image type.
* @return the int.
*/
@SuppressWarnings("unused")
private int ippFilter(Raster src, WritableRaster dst, int imageType) {
int srcStride, dstStride;
boolean skipChannel = false;
int channels;
int offsets[] = null;
switch (imageType) {
case BufferedImage.TYPE_INT_RGB:
case BufferedImage.TYPE_INT_BGR:
{
channels = 4;
srcStride = src.getWidth() * 4;
dstStride = dst.getWidth() * 4;
skipChannel = true;
break;
}
case BufferedImage.TYPE_INT_ARGB:
case BufferedImage.TYPE_INT_ARGB_PRE:
case BufferedImage.TYPE_4BYTE_ABGR:
case BufferedImage.TYPE_4BYTE_ABGR_PRE:
{
channels = 4;
srcStride = src.getWidth() * 4;
dstStride = dst.getWidth() * 4;
break;
}
case BufferedImage.TYPE_BYTE_GRAY:
case BufferedImage.TYPE_BYTE_INDEXED:
{
channels = 1;
srcStride = src.getWidth();
dstStride = dst.getWidth();
break;
}
case BufferedImage.TYPE_3BYTE_BGR:
{
channels = 3;
srcStride = src.getWidth() * 3;
dstStride = dst.getWidth() * 3;
break;
}
case BufferedImage.TYPE_USHORT_GRAY: // TODO - could be done in
// native code?
case BufferedImage.TYPE_USHORT_565_RGB:
case BufferedImage.TYPE_USHORT_555_RGB:
case BufferedImage.TYPE_BYTE_BINARY:
{
return slowFilter(src, dst);
}
default:
{
SampleModel srcSM = src.getSampleModel();
SampleModel dstSM = dst.getSampleModel();
if (srcSM instanceof PixelInterleavedSampleModel
&& dstSM instanceof PixelInterleavedSampleModel) {
// Check PixelInterleavedSampleModel
if (srcSM.getDataType() != DataBuffer.TYPE_BYTE
|| dstSM.getDataType() != DataBuffer.TYPE_BYTE) {
return slowFilter(src, dst);
}
channels = srcSM.getNumBands(); // Have IPP functions for 1,
// 3 and 4 channels
if (channels != 1 && channels != 3 && channels != 4) {
return slowFilter(src, dst);
}
int dataTypeSize = DataBuffer.getDataTypeSize(srcSM.getDataType()) / 8;
srcStride = ((ComponentSampleModel) srcSM).getScanlineStride() * dataTypeSize;
dstStride = ((ComponentSampleModel) dstSM).getScanlineStride() * dataTypeSize;
} else if (srcSM instanceof SinglePixelPackedSampleModel
&& dstSM instanceof SinglePixelPackedSampleModel) {
// Check SinglePixelPackedSampleModel
SinglePixelPackedSampleModel sppsm1 = (SinglePixelPackedSampleModel) srcSM;
SinglePixelPackedSampleModel sppsm2 = (SinglePixelPackedSampleModel) dstSM;
// No IPP function for this type
if (sppsm1.getDataType() == DataBuffer.TYPE_USHORT) {
return slowFilter(src, dst);
}
channels = sppsm1.getNumBands();
// Have IPP functions for 1, 3 and 4 channels
if (channels != 1 && channels != 3 && channels != 4) {
return slowFilter(src, dst);
}
// Check compatibility of sample models
if (sppsm1.getDataType() != sppsm2.getDataType()
|| !Arrays.equals(sppsm1.getBitOffsets(), sppsm2.getBitOffsets())
|| !Arrays.equals(sppsm1.getBitMasks(), sppsm2.getBitMasks())) {
return slowFilter(src, dst);
}
for (int i = 0; i < channels; i++) {
if (sppsm1.getSampleSize(i) != 8) {
return slowFilter(src, dst);
}
}
if (channels == 3) {
channels = 4;
}
int dataTypeSize = DataBuffer.getDataTypeSize(sppsm1.getDataType()) / 8;
srcStride = sppsm1.getScanlineStride() * dataTypeSize;
dstStride = sppsm2.getScanlineStride() * dataTypeSize;
} else {
return slowFilter(src, dst);
}
// Fill offsets if there's a child raster
if (src.getParent() != null || dst.getParent() != null) {
if (src.getSampleModelTranslateX() != 0
|| src.getSampleModelTranslateY() != 0
|| dst.getSampleModelTranslateX() != 0
|| dst.getSampleModelTranslateY() != 0) {
offsets = new int[4];
offsets[0] = -src.getSampleModelTranslateX() + src.getMinX();
offsets[1] = -src.getSampleModelTranslateY() + src.getMinY();
offsets[2] = -dst.getSampleModelTranslateX() + dst.getMinX();
offsets[3] = -dst.getSampleModelTranslateY() + dst.getMinY();
}
}
}
}
double m00 = at.getScaleX();
double m01 = at.getShearX();
double m02 = at.getTranslateX();
double m10 = at.getShearY();
double m11 = at.getScaleY();
double m12 = at.getTranslateY();
Object srcData, dstData;
AwtImageBackdoorAccessor dbAccess = AwtImageBackdoorAccessor.getInstance();
try {
srcData = dbAccess.getData(src.getDataBuffer());
dstData = dbAccess.getData(dst.getDataBuffer());
} catch (IllegalArgumentException e) {
return -1; // Unknown data buffer type
}
return ippAffineTransform(
m00,
m01,
m02,
m10,
m11,
m12,
srcData,
src.getWidth(),
src.getHeight(),
srcStride,
dstData,
dst.getWidth(),
dst.getHeight(),
dstStride,
iType,
channels,
skipChannel,
offsets);
}
@Override
public BufferedImage read(final int imageIndex, final ImageReadParam param) throws IOException {
Iterator<ImageTypeSpecifier> imageTypes = getImageTypes(imageIndex);
ImageTypeSpecifier rawType = getRawImageType(imageIndex);
if (header.getPaletteInfo() != PCX.PALETTEINFO_COLOR
&& header.getPaletteInfo() != PCX.PALETTEINFO_GRAY) {
processWarningOccurred(
String.format(
"Unsupported color mode: %d, colors may look incorrect", header.getPaletteInfo()));
}
int width = getWidth(imageIndex);
int height = getHeight(imageIndex);
BufferedImage destination = getDestination(param, imageTypes, width, height);
Rectangle srcRegion = new Rectangle();
Rectangle destRegion = new Rectangle();
computeRegions(param, width, height, destination, srcRegion, destRegion);
WritableRaster destRaster =
clipToRect(
destination.getRaster(),
destRegion,
param != null ? param.getDestinationBands() : null);
checkReadParamBandSettings(param, rawType.getNumBands(), destRaster.getNumBands());
int compression = header.getCompression();
// Wrap input (COMPRESSION_RLE is really the only value allowed)
DataInput input =
compression == PCX.COMPRESSION_RLE
? new DataInputStream(
new DecoderStream(IIOUtil.createStreamAdapter(imageInput), new RLEDecoder()))
: imageInput;
int xSub = param != null ? param.getSourceXSubsampling() : 1;
int ySub = param != null ? param.getSourceYSubsampling() : 1;
processImageStarted(imageIndex);
if (rawType.getColorModel() instanceof IndexColorModel && header.getChannels() > 1) {
// Bit planes!
// Create raster from a default 8 bit layout
WritableRaster rowRaster = GRAYSCALE.createBufferedImage(header.getWidth(), 1).getRaster();
// Clip to source region
Raster clippedRow =
clipRowToRect(
rowRaster,
srcRegion,
param != null ? param.getSourceBands() : null,
param != null ? param.getSourceXSubsampling() : 1);
int planeWidth = header.getBytesPerLine();
byte[] planeData = new byte[planeWidth * 8];
byte[] rowDataByte = ((DataBufferByte) rowRaster.getDataBuffer()).getData();
for (int y = 0; y < height; y++) {
switch (header.getBitsPerPixel()) {
case 1:
readRowByte(
input,
srcRegion,
xSub,
ySub,
planeData,
0,
planeWidth * header.getChannels(),
destRaster,
clippedRow,
y);
break;
default:
throw new AssertionError();
}
int pixelPos = 0;
for (int planePos = 0; planePos < planeWidth; planePos++) {
BitRotator.bitRotateCW(planeData, planePos, planeWidth, rowDataByte, pixelPos, 1);
pixelPos += 8;
}
processImageProgress(100f * y / height);
if (y >= srcRegion.y + srcRegion.height) {
break;
}
if (abortRequested()) {
processReadAborted();
break;
}
}
} else if (header.getBitsPerPixel() == 24 || header.getBitsPerPixel() == 32) {
// Can't use width here, as we need to take bytesPerLine into account, and re-create a width
// based on this
int rowWidth = (header.getBytesPerLine() * 8) / header.getBitsPerPixel();
WritableRaster rowRaster = rawType.createBufferedImage(rowWidth, 1).getRaster();
// Clip to source region
Raster clippedRow =
clipRowToRect(
rowRaster,
srcRegion,
param != null ? param.getSourceBands() : null,
param != null ? param.getSourceXSubsampling() : 1);
for (int y = 0; y < height; y++) {
byte[] rowDataByte = ((DataBufferByte) rowRaster.getDataBuffer()).getData();
readRowByte(
input,
srcRegion,
xSub,
ySub,
rowDataByte,
0,
rowDataByte.length,
destRaster,
clippedRow,
y);
processImageProgress(100f * y / height);
if (y >= srcRegion.y + srcRegion.height) {
break;
}
if (abortRequested()) {
processReadAborted();
break;
}
}
} else {
// Can't use width here, as we need to take bytesPerLine into account, and re-create a width
// based on this
int rowWidth = (header.getBytesPerLine() * 8) / header.getBitsPerPixel();
WritableRaster rowRaster = rawType.createBufferedImage(rowWidth, 1).getRaster();
// Clip to source region
Raster clippedRow =
clipRowToRect(
rowRaster,
srcRegion,
param != null ? param.getSourceBands() : null,
param != null ? param.getSourceXSubsampling() : 1);
for (int y = 0; y < height; y++) {
for (int c = 0; c < header.getChannels(); c++) {
WritableRaster destChannel =
destRaster.createWritableChild(
destRaster.getMinX(),
destRaster.getMinY(),
destRaster.getWidth(),
destRaster.getHeight(),
0,
0,
new int[] {c});
Raster srcChannel =
clippedRow.createChild(
clippedRow.getMinX(), 0, clippedRow.getWidth(), 1, 0, 0, new int[] {c});
switch (header.getBitsPerPixel()) {
case 1:
case 2:
case 4:
case 8:
byte[] rowDataByte = ((DataBufferByte) rowRaster.getDataBuffer()).getData(c);
readRowByte(
input,
srcRegion,
xSub,
ySub,
rowDataByte,
0,
rowDataByte.length,
destChannel,
srcChannel,
y);
break;
default:
throw new AssertionError();
}
if (abortRequested()) {
break;
}
}
processImageProgress(100f * y / height);
if (y >= srcRegion.y + srcRegion.height) {
break;
}
if (abortRequested()) {
processReadAborted();
break;
}
}
}
processImageComplete();
return destination;
}
