private boolean newImage(BufferedImage tmpImage) {
Boolean iguales = true;
// Si es la primer imagen
if (lastBufferedImage == null) {
// Devuelvo true
return true;
}
// Obtengo los buffers de las imágenes
DataBuffer newImageDataBuffer = tmpImage.getRaster().getDataBuffer();
DataBuffer lastImageDataBuffer = lastBufferedImage.getRaster().getDataBuffer();
// Obtengo los tipos de los buffers.
DataBufferInt newImageDBAsDBInt = (DataBufferInt) newImageDataBuffer;
DataBufferInt lastImageDBAsDBInt = (DataBufferInt) lastImageDataBuffer;
// Armo arreglos de ints con la información de los buffers
for (int bank = 0; bank < newImageDBAsDBInt.getNumBanks(); bank++) {
int[] nueva = newImageDBAsDBInt.getData(bank);
int[] anterior = lastImageDBAsDBInt.getData(bank);
// si la información es la misma
if (Arrays.equals(nueva, anterior) == true) {
// las imágenes son iguales y devuelvo false ya que NO debo enviarla
iguales = false;
}
}
// Si las imágenes son distintas, devuelvo true ya que debo enviarla.
return iguales;
}
/**
* Constructs a IntegerComponentRaster with the given SampleModel, DataBuffer, and parent.
* DataBuffer must be a DataBufferInt and SampleModel must be of type
* SinglePixelPackedSampleModel. When translated into the base Raster's coordinate system, aRegion
* must be contained by the base Raster. Origin is the coodinate in the new Raster's coordinate
* system of the origin of the base Raster. (The base Raster is the Raster's ancestor which has no
* parent.)
*
* <p>Note that this constructor should generally be called by other constructors or create
* methods, it should not be used directly.
*
* @param sampleModel The SampleModel that specifies the layout.
* @param dataBuffer The DataBufferInt that contains the image data.
* @param aRegion The Rectangle that specifies the image area.
* @param origin The Point that specifies the origin.
* @param parent The parent (if any) of this raster.
*/
public IntegerComponentRaster(
SampleModel sampleModel,
DataBuffer dataBuffer,
Rectangle aRegion,
Point origin,
IntegerComponentRaster parent) {
super(sampleModel, dataBuffer, aRegion, origin, parent);
this.maxX = minX + width;
this.maxY = minY + height;
if (!(dataBuffer instanceof DataBufferInt)) {
throw new RasterFormatException("IntegerComponentRasters must have" + "integer DataBuffers");
}
DataBufferInt dbi = (DataBufferInt) dataBuffer;
if (dbi.getNumBanks() != 1) {
throw new RasterFormatException(
"DataBuffer for IntegerComponentRasters" + " must only have 1 bank.");
}
this.data = stealData(dbi, 0);
if (sampleModel instanceof SinglePixelPackedSampleModel) {
SinglePixelPackedSampleModel sppsm = (SinglePixelPackedSampleModel) sampleModel;
int[] boffsets = sppsm.getBitOffsets();
boolean notByteBoundary = false;
for (int i = 1; i < boffsets.length; i++) {
if ((boffsets[i] % 8) != 0) {
notByteBoundary = true;
}
}
this.type =
(notByteBoundary
? IntegerComponentRaster.TYPE_INT_PACKED_SAMPLES
: IntegerComponentRaster.TYPE_INT_8BIT_SAMPLES);
this.scanlineStride = sppsm.getScanlineStride();
this.pixelStride = 1;
this.dataOffsets = new int[1];
this.dataOffsets[0] = dbi.getOffset();
this.bandOffset = this.dataOffsets[0];
int xOffset = aRegion.x - origin.x;
int yOffset = aRegion.y - origin.y;
dataOffsets[0] += xOffset + yOffset * scanlineStride;
this.numDataElems = sppsm.getNumDataElements();
} else {
throw new RasterFormatException(
"IntegerComponentRasters must have" + " SinglePixelPackedSampleModel");
}
verify();
}