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static GrabbableRGBBytePixels grabbableRGBBytePixels(BufferedImage img) { Raster raster = img.getRaster(); SampleModel _sampleModel = raster.getSampleModel(); if (!_sampleModel instanceof PixelInterleavedSampleModel) null; PixelInterleavedSampleModel sampleModel = cast _sampleModel; DataBufferByte dataBuffer = cast raster.getDataBuffer(); assertEquals(1, dataBuffer.getNumBanks()); assertEquals(DataBuffer.TYPE_BYTE, dataBuffer.getDataType()); // Let's at this point assume the raster data is what we // think it is... (TODO: test on unusual platforms) int w = img.getWidth(), h = img.getHeight(); int pixelStride = sampleModel.getPixelStride(); int scanlineStride = sampleModel.getScanlineStride(); byte[] pixels = dataBuffer.getData(); int offset = dataBuffer.getOffset(); int translateX = raster.getSampleModelTranslateX(); int translateY = raster.getSampleModelTranslateY(); offset += -translateX-translateY*scanlineStride; var imageModel = img.getColorModel(); if (imageModel != ColorModel.getRGBdefault()) { assertEquals(w*3, scanlineStride); assertEquals(3, pixelStride); int n = pixels.length; byte[] newPixels = new[n]; for (int i = 0; i < n; i += 3) { int rgb = imageModel.getRGB( ((pixels[i] & 0xFF) << 16) | ((pixels[i+1] & 0xFF) << 8) | (pixels[i+2] & 0xFF)); newPixels[i] = (byte) (rgb >> 16); newPixels[i+1] = (byte) (rgb >> 8); newPixels[i+2] = (byte) rgb; } pixels = newPixels; } ret GrabbableRGBBytePixels(pixels, w, h, offset, scanlineStride, pixelStride); }