Examples with SampleModel java.awt.image.SampleModel used on opensource projects

Example 26 with SampleModel

use of java.awt.image.SampleModel in project jdk8u_jdk by JetBrains.

the class LCMSTransform method colorConvert.

public void colorConvert(Raster src, WritableRaster dst) {
    LCMSImageLayout srcIL, dstIL;
    dstIL = LCMSImageLayout.createImageLayout(dst);
    if (dstIL != null) {
        srcIL = LCMSImageLayout.createImageLayout(src);
        if (srcIL != null) {
            doTransform(srcIL, dstIL);
            return;
        }
    }
    // Can't pass src and dst directly to CMM, so process per scanline
    SampleModel srcSM = src.getSampleModel();
    SampleModel dstSM = dst.getSampleModel();
    int srcTransferType = src.getTransferType();
    int dstTransferType = dst.getTransferType();
    int w = src.getWidth();
    int h = src.getHeight();
    int srcNumBands = src.getNumBands();
    int dstNumBands = dst.getNumBands();
    int precision = 8;
    float maxNum = 255.0f;
    for (int i = 0; i < srcNumBands; i++) {
        if (srcSM.getSampleSize(i) > 8) {
            precision = 16;
            maxNum = 65535.0f;
        }
    }
    for (int i = 0; i < dstNumBands; i++) {
        if (dstSM.getSampleSize(i) > 8) {
            precision = 16;
            maxNum = 65535.0f;
        }
    }
    float[] srcScaleFactor = new float[srcNumBands];
    float[] dstScaleFactor = new float[dstNumBands];
    for (int i = 0; i < srcNumBands; i++) {
        if (srcTransferType == DataBuffer.TYPE_SHORT) {
            srcScaleFactor[i] = maxNum / 32767.0f;
        } else {
            srcScaleFactor[i] = maxNum / ((float) ((1 << srcSM.getSampleSize(i)) - 1));
        }
    }
    for (int i = 0; i < dstNumBands; i++) {
        if (dstTransferType == DataBuffer.TYPE_SHORT) {
            dstScaleFactor[i] = 32767.0f / maxNum;
        } else {
            dstScaleFactor[i] = ((float) ((1 << dstSM.getSampleSize(i)) - 1)) / maxNum;
        }
    }
    int ys = src.getMinY();
    int yd = dst.getMinY();
    int xs, xd;
    int sample;
    if (precision == 8) {
        byte[] srcLine = new byte[w * srcNumBands];
        byte[] dstLine = new byte[w * dstNumBands];
        int idx;
        // TODO check for src npixels = dst npixels
        try {
            srcIL = new LCMSImageLayout(srcLine, srcLine.length / getNumInComponents(), LCMSImageLayout.CHANNELS_SH(getNumInComponents()) | LCMSImageLayout.BYTES_SH(1), getNumInComponents());
            dstIL = new LCMSImageLayout(dstLine, dstLine.length / getNumOutComponents(), LCMSImageLayout.CHANNELS_SH(getNumOutComponents()) | LCMSImageLayout.BYTES_SH(1), getNumOutComponents());
        } catch (ImageLayoutException e) {
            throw new CMMException("Unable to convert rasters");
        }
        // process each scanline
        for (int y = 0; y < h; y++, ys++, yd++) {
            // get src scanline
            xs = src.getMinX();
            idx = 0;
            for (int x = 0; x < w; x++, xs++) {
                for (int i = 0; i < srcNumBands; i++) {
                    sample = src.getSample(xs, ys, i);
                    srcLine[idx++] = (byte) ((sample * srcScaleFactor[i]) + 0.5f);
                }
            }
            // color convert srcLine to dstLine
            doTransform(srcIL, dstIL);
            // store dst scanline
            xd = dst.getMinX();
            idx = 0;
            for (int x = 0; x < w; x++, xd++) {
                for (int i = 0; i < dstNumBands; i++) {
                    sample = (int) (((dstLine[idx++] & 0xff) * dstScaleFactor[i]) + 0.5f);
                    dst.setSample(xd, yd, i, sample);
                }
            }
        }
    } else {
        short[] srcLine = new short[w * srcNumBands];
        short[] dstLine = new short[w * dstNumBands];
        int idx;
        try {
            srcIL = new LCMSImageLayout(srcLine, srcLine.length / getNumInComponents(), LCMSImageLayout.CHANNELS_SH(getNumInComponents()) | LCMSImageLayout.BYTES_SH(2), getNumInComponents() * 2);
            dstIL = new LCMSImageLayout(dstLine, dstLine.length / getNumOutComponents(), LCMSImageLayout.CHANNELS_SH(getNumOutComponents()) | LCMSImageLayout.BYTES_SH(2), getNumOutComponents() * 2);
        } catch (ImageLayoutException e) {
            throw new CMMException("Unable to convert rasters");
        }
        // process each scanline
        for (int y = 0; y < h; y++, ys++, yd++) {
            // get src scanline
            xs = src.getMinX();
            idx = 0;
            for (int x = 0; x < w; x++, xs++) {
                for (int i = 0; i < srcNumBands; i++) {
                    sample = src.getSample(xs, ys, i);
                    srcLine[idx++] = (short) ((sample * srcScaleFactor[i]) + 0.5f);
                }
            }
            // color convert srcLine to dstLine
            doTransform(srcIL, dstIL);
            // store dst scanline
            xd = dst.getMinX();
            idx = 0;
            for (int x = 0; x < w; x++, xd++) {
                for (int i = 0; i < dstNumBands; i++) {
                    sample = (int) (((dstLine[idx++] & 0xffff) * dstScaleFactor[i]) + 0.5f);
                    dst.setSample(xd, yd, i, sample);
                }
            }
        }
    }
}

Example 27 with SampleModel

use of java.awt.image.SampleModel in project jdk8u_jdk by JetBrains.

the class ImageUtil method setPackedBinaryData.

/**
     * Sets the supplied <code>Raster</code>'s data from an array
     * of packed binary data of the form returned by
     * <code>getPackedBinaryData()</code>.
     *
     * @throws IllegalArgumentException if <code>isBinary()</code> returns
     * <code>false</code> with the <code>SampleModel</code> of the
     * supplied <code>Raster</code> as argument.
     */
public static void setPackedBinaryData(byte[] binaryDataArray, WritableRaster raster, Rectangle rect) {
    SampleModel sm = raster.getSampleModel();
    if (!isBinary(sm)) {
        throw new IllegalArgumentException(I18N.getString("ImageUtil0"));
    }
    int rectX = rect.x;
    int rectY = rect.y;
    int rectWidth = rect.width;
    int rectHeight = rect.height;
    DataBuffer dataBuffer = raster.getDataBuffer();
    int dx = rectX - raster.getSampleModelTranslateX();
    int dy = rectY - raster.getSampleModelTranslateY();
    MultiPixelPackedSampleModel mpp = (MultiPixelPackedSampleModel) sm;
    int lineStride = mpp.getScanlineStride();
    int eltOffset = dataBuffer.getOffset() + mpp.getOffset(dx, dy);
    int bitOffset = mpp.getBitOffset(dx);
    int b = 0;
    if (bitOffset == 0) {
        if (dataBuffer instanceof DataBufferByte) {
            byte[] data = ((DataBufferByte) dataBuffer).getData();
            if (data == binaryDataArray) {
                // Optimal case: simply return.
                return;
            }
            int stride = (rectWidth + 7) / 8;
            int offset = 0;
            for (int y = 0; y < rectHeight; y++) {
                System.arraycopy(binaryDataArray, offset, data, eltOffset, stride);
                offset += stride;
                eltOffset += lineStride;
            }
        } else if (dataBuffer instanceof DataBufferShort || dataBuffer instanceof DataBufferUShort) {
            short[] data = dataBuffer instanceof DataBufferShort ? ((DataBufferShort) dataBuffer).getData() : ((DataBufferUShort) dataBuffer).getData();
            for (int y = 0; y < rectHeight; y++) {
                int xRemaining = rectWidth;
                int i = eltOffset;
                while (xRemaining > 8) {
                    data[i++] = (short) (((binaryDataArray[b++] & 0xFF) << 8) | (binaryDataArray[b++] & 0xFF));
                    xRemaining -= 16;
                }
                if (xRemaining > 0) {
                    data[i++] = (short) ((binaryDataArray[b++] & 0xFF) << 8);
                }
                eltOffset += lineStride;
            }
        } else if (dataBuffer instanceof DataBufferInt) {
            int[] data = ((DataBufferInt) dataBuffer).getData();
            for (int y = 0; y < rectHeight; y++) {
                int xRemaining = rectWidth;
                int i = eltOffset;
                while (xRemaining > 24) {
                    data[i++] = (int) (((binaryDataArray[b++] & 0xFF) << 24) | ((binaryDataArray[b++] & 0xFF) << 16) | ((binaryDataArray[b++] & 0xFF) << 8) | (binaryDataArray[b++] & 0xFF));
                    xRemaining -= 32;
                }
                int shift = 24;
                while (xRemaining > 0) {
                    data[i] |= (int) ((binaryDataArray[b++] & 0xFF) << shift);
                    shift -= 8;
                    xRemaining -= 8;
                }
                eltOffset += lineStride;
            }
        }
    } else {
        // bitOffset != 0
        int stride = (rectWidth + 7) / 8;
        int offset = 0;
        if (dataBuffer instanceof DataBufferByte) {
            byte[] data = ((DataBufferByte) dataBuffer).getData();
            if ((bitOffset & 7) == 0) {
                for (int y = 0; y < rectHeight; y++) {
                    System.arraycopy(binaryDataArray, offset, data, eltOffset, stride);
                    offset += stride;
                    eltOffset += lineStride;
                }
            } else {
                // bitOffset % 8 != 0
                int rightShift = bitOffset & 7;
                int leftShift = 8 - rightShift;
                int leftShift8 = 8 + leftShift;
                int mask = (byte) (255 << leftShift);
                int mask1 = (byte) ~mask;
                for (int y = 0; y < rectHeight; y++) {
                    int i = eltOffset;
                    int xRemaining = rectWidth;
                    while (xRemaining > 0) {
                        byte datum = binaryDataArray[b++];
                        if (xRemaining > leftShift8) {
                            // when all the bits in this BYTE will be set
                            // into the data buffer.
                            data[i] = (byte) ((data[i] & mask) | ((datum & 0xFF) >>> rightShift));
                            data[++i] = (byte) ((datum & 0xFF) << leftShift);
                        } else if (xRemaining > leftShift) {
                            // All the "leftShift" high bits will be set
                            // into the data buffer.  But not all the
                            // "rightShift" low bits will be set.
                            data[i] = (byte) ((data[i] & mask) | ((datum & 0xFF) >>> rightShift));
                            i++;
                            data[i] = (byte) ((data[i] & mask1) | ((datum & 0xFF) << leftShift));
                        } else {
                            // Less than "leftShift" high bits will be set.
                            int remainMask = (1 << leftShift - xRemaining) - 1;
                            data[i] = (byte) ((data[i] & (mask | remainMask)) | (datum & 0xFF) >>> rightShift & ~remainMask);
                        }
                        xRemaining -= 8;
                    }
                    eltOffset += lineStride;
                }
            }
        } else if (dataBuffer instanceof DataBufferShort || dataBuffer instanceof DataBufferUShort) {
            short[] data = dataBuffer instanceof DataBufferShort ? ((DataBufferShort) dataBuffer).getData() : ((DataBufferUShort) dataBuffer).getData();
            int rightShift = bitOffset & 7;
            int leftShift = 8 - rightShift;
            int leftShift16 = 16 + leftShift;
            int mask = (short) (~(255 << leftShift));
            int mask1 = (short) (65535 << leftShift);
            int mask2 = (short) ~mask1;
            for (int y = 0; y < rectHeight; y++) {
                int bOffset = bitOffset;
                int xRemaining = rectWidth;
                for (int x = 0; x < rectWidth; x += 8, bOffset += 8, xRemaining -= 8) {
                    int i = eltOffset + (bOffset >> 4);
                    int mod = bOffset & 15;
                    int datum = binaryDataArray[b++] & 0xFF;
                    if (mod <= 8) {
                        // This BYTE is set into one SHORT
                        if (xRemaining < 8) {
                            // Mask the bits to be set.
                            datum &= 255 << 8 - xRemaining;
                        }
                        data[i] = (short) ((data[i] & mask) | (datum << leftShift));
                    } else if (xRemaining > leftShift16) {
                        // This BYTE will be set into two SHORTs
                        data[i] = (short) ((data[i] & mask1) | ((datum >>> rightShift) & 0xFFFF));
                        data[++i] = (short) ((datum << leftShift) & 0xFFFF);
                    } else if (xRemaining > leftShift) {
                        // This BYTE will be set into two SHORTs;
                        // But not all the low bits will be set into SHORT
                        data[i] = (short) ((data[i] & mask1) | ((datum >>> rightShift) & 0xFFFF));
                        i++;
                        data[i] = (short) ((data[i] & mask2) | ((datum << leftShift) & 0xFFFF));
                    } else {
                        // Only some of the high bits will be set into
                        // SHORTs
                        int remainMask = (1 << leftShift - xRemaining) - 1;
                        data[i] = (short) ((data[i] & (mask1 | remainMask)) | ((datum >>> rightShift) & 0xFFFF & ~remainMask));
                    }
                }
                eltOffset += lineStride;
            }
        } else if (dataBuffer instanceof DataBufferInt) {
            int[] data = ((DataBufferInt) dataBuffer).getData();
            int rightShift = bitOffset & 7;
            int leftShift = 8 - rightShift;
            int leftShift32 = 32 + leftShift;
            int mask = 0xFFFFFFFF << leftShift;
            int mask1 = ~mask;
            for (int y = 0; y < rectHeight; y++) {
                int bOffset = bitOffset;
                int xRemaining = rectWidth;
                for (int x = 0; x < rectWidth; x += 8, bOffset += 8, xRemaining -= 8) {
                    int i = eltOffset + (bOffset >> 5);
                    int mod = bOffset & 31;
                    int datum = binaryDataArray[b++] & 0xFF;
                    if (mod <= 24) {
                        // This BYTE is set into one INT
                        int shift = 24 - mod;
                        if (xRemaining < 8) {
                            // Mask the bits to be set.
                            datum &= 255 << 8 - xRemaining;
                        }
                        data[i] = (data[i] & (~(255 << shift))) | (datum << shift);
                    } else if (xRemaining > leftShift32) {
                        // All the bits of this BYTE will be set into two INTs
                        data[i] = (data[i] & mask) | (datum >>> rightShift);
                        data[++i] = datum << leftShift;
                    } else if (xRemaining > leftShift) {
                        // This BYTE will be set into two INTs;
                        // But not all the low bits will be set into INT
                        data[i] = (data[i] & mask) | (datum >>> rightShift);
                        i++;
                        data[i] = (data[i] & mask1) | (datum << leftShift);
                    } else {
                        // Only some of the high bits will be set into INT
                        int remainMask = (1 << leftShift - xRemaining) - 1;
                        data[i] = (data[i] & (mask | remainMask)) | (datum >>> rightShift & ~remainMask);
                    }
                }
                eltOffset += lineStride;
            }
        }
    }
}

Example 28 with SampleModel

use of java.awt.image.SampleModel in project jdk8u_jdk by JetBrains.

the class ImageUtil method getPackedBinaryData.

/**
     * For the case of binary data (<code>isBinary()</code> returns
     * <code>true</code>), return the binary data as a packed byte array.
     * The data will be packed as eight bits per byte with no bit offset,
     * i.e., the first bit in each image line will be the left-most of the
     * first byte of the line.  The line stride in bytes will be
     * <code>(int)((getWidth()+7)/8)</code>.  The length of the returned
     * array will be the line stride multiplied by <code>getHeight()</code>
     *
     * @return the binary data as a packed array of bytes with zero offset
     * of <code>null</code> if the data are not binary.
     * @throws IllegalArgumentException if <code>isBinary()</code> returns
     * <code>false</code> with the <code>SampleModel</code> of the
     * supplied <code>Raster</code> as argument.
     */
public static byte[] getPackedBinaryData(Raster raster, Rectangle rect) {
    SampleModel sm = raster.getSampleModel();
    if (!isBinary(sm)) {
        throw new IllegalArgumentException(I18N.getString("ImageUtil0"));
    }
    int rectX = rect.x;
    int rectY = rect.y;
    int rectWidth = rect.width;
    int rectHeight = rect.height;
    DataBuffer dataBuffer = raster.getDataBuffer();
    int dx = rectX - raster.getSampleModelTranslateX();
    int dy = rectY - raster.getSampleModelTranslateY();
    MultiPixelPackedSampleModel mpp = (MultiPixelPackedSampleModel) sm;
    int lineStride = mpp.getScanlineStride();
    int eltOffset = dataBuffer.getOffset() + mpp.getOffset(dx, dy);
    int bitOffset = mpp.getBitOffset(dx);
    int numBytesPerRow = (rectWidth + 7) / 8;
    if (dataBuffer instanceof DataBufferByte && eltOffset == 0 && bitOffset == 0 && numBytesPerRow == lineStride && ((DataBufferByte) dataBuffer).getData().length == numBytesPerRow * rectHeight) {
        return ((DataBufferByte) dataBuffer).getData();
    }
    byte[] binaryDataArray = new byte[numBytesPerRow * rectHeight];
    int b = 0;
    if (bitOffset == 0) {
        if (dataBuffer instanceof DataBufferByte) {
            byte[] data = ((DataBufferByte) dataBuffer).getData();
            int stride = numBytesPerRow;
            int offset = 0;
            for (int y = 0; y < rectHeight; y++) {
                System.arraycopy(data, eltOffset, binaryDataArray, offset, stride);
                offset += stride;
                eltOffset += lineStride;
            }
        } else if (dataBuffer instanceof DataBufferShort || dataBuffer instanceof DataBufferUShort) {
            short[] data = dataBuffer instanceof DataBufferShort ? ((DataBufferShort) dataBuffer).getData() : ((DataBufferUShort) dataBuffer).getData();
            for (int y = 0; y < rectHeight; y++) {
                int xRemaining = rectWidth;
                int i = eltOffset;
                while (xRemaining > 8) {
                    short datum = data[i++];
                    binaryDataArray[b++] = (byte) ((datum >>> 8) & 0xFF);
                    binaryDataArray[b++] = (byte) (datum & 0xFF);
                    xRemaining -= 16;
                }
                if (xRemaining > 0) {
                    binaryDataArray[b++] = (byte) ((data[i] >>> 8) & 0XFF);
                }
                eltOffset += lineStride;
            }
        } else if (dataBuffer instanceof DataBufferInt) {
            int[] data = ((DataBufferInt) dataBuffer).getData();
            for (int y = 0; y < rectHeight; y++) {
                int xRemaining = rectWidth;
                int i = eltOffset;
                while (xRemaining > 24) {
                    int datum = data[i++];
                    binaryDataArray[b++] = (byte) ((datum >>> 24) & 0xFF);
                    binaryDataArray[b++] = (byte) ((datum >>> 16) & 0xFF);
                    binaryDataArray[b++] = (byte) ((datum >>> 8) & 0xFF);
                    binaryDataArray[b++] = (byte) (datum & 0xFF);
                    xRemaining -= 32;
                }
                int shift = 24;
                while (xRemaining > 0) {
                    binaryDataArray[b++] = (byte) ((data[i] >>> shift) & 0xFF);
                    shift -= 8;
                    xRemaining -= 8;
                }
                eltOffset += lineStride;
            }
        }
    } else {
        // bitOffset != 0
        if (dataBuffer instanceof DataBufferByte) {
            byte[] data = ((DataBufferByte) dataBuffer).getData();
            if ((bitOffset & 7) == 0) {
                int stride = numBytesPerRow;
                int offset = 0;
                for (int y = 0; y < rectHeight; y++) {
                    System.arraycopy(data, eltOffset, binaryDataArray, offset, stride);
                    offset += stride;
                    eltOffset += lineStride;
                }
            } else {
                // bitOffset % 8 != 0
                int leftShift = bitOffset & 7;
                int rightShift = 8 - leftShift;
                for (int y = 0; y < rectHeight; y++) {
                    int i = eltOffset;
                    int xRemaining = rectWidth;
                    while (xRemaining > 0) {
                        if (xRemaining > rightShift) {
                            binaryDataArray[b++] = (byte) (((data[i++] & 0xFF) << leftShift) | ((data[i] & 0xFF) >>> rightShift));
                        } else {
                            binaryDataArray[b++] = (byte) ((data[i] & 0xFF) << leftShift);
                        }
                        xRemaining -= 8;
                    }
                    eltOffset += lineStride;
                }
            }
        } else if (dataBuffer instanceof DataBufferShort || dataBuffer instanceof DataBufferUShort) {
            short[] data = dataBuffer instanceof DataBufferShort ? ((DataBufferShort) dataBuffer).getData() : ((DataBufferUShort) dataBuffer).getData();
            for (int y = 0; y < rectHeight; y++) {
                int bOffset = bitOffset;
                for (int x = 0; x < rectWidth; x += 8, bOffset += 8) {
                    int i = eltOffset + bOffset / 16;
                    int mod = bOffset % 16;
                    int left = data[i] & 0xFFFF;
                    if (mod <= 8) {
                        binaryDataArray[b++] = (byte) (left >>> (8 - mod));
                    } else {
                        int delta = mod - 8;
                        int right = data[i + 1] & 0xFFFF;
                        binaryDataArray[b++] = (byte) ((left << delta) | (right >>> (16 - delta)));
                    }
                }
                eltOffset += lineStride;
            }
        } else if (dataBuffer instanceof DataBufferInt) {
            int[] data = ((DataBufferInt) dataBuffer).getData();
            for (int y = 0; y < rectHeight; y++) {
                int bOffset = bitOffset;
                for (int x = 0; x < rectWidth; x += 8, bOffset += 8) {
                    int i = eltOffset + bOffset / 32;
                    int mod = bOffset % 32;
                    int left = data[i];
                    if (mod <= 24) {
                        binaryDataArray[b++] = (byte) (left >>> (24 - mod));
                    } else {
                        int delta = mod - 24;
                        int right = data[i + 1];
                        binaryDataArray[b++] = (byte) ((left << delta) | (right >>> (32 - delta)));
                    }
                }
                eltOffset += lineStride;
            }
        }
    }
    return binaryDataArray;
}

Example 29 with SampleModel

use of java.awt.image.SampleModel in project jdk8u_jdk by JetBrains.

the class BMPImageWriter method canEncodeImage.

protected boolean canEncodeImage(int compression, ImageTypeSpecifier imgType) {
    ImageWriterSpi spi = this.getOriginatingProvider();
    if (!spi.canEncodeImage(imgType)) {
        return false;
    }
    int biType = imgType.getBufferedImageType();
    int bpp = imgType.getColorModel().getPixelSize();
    if (compressionType == BI_RLE4 && bpp != 4) {
        // only 4bpp images can be encoded as BI_RLE4
        return false;
    }
    if (compressionType == BI_RLE8 && bpp != 8) {
        // only 8bpp images can be encoded as BI_RLE8
        return false;
    }
    if (bpp == 16) {
        /*
             * Technically we expect that we may be able to
             * encode only some of SinglePixelPackedSampleModel
             * images here.
             *
             * In addition we should take into account following:
             *
             * 1. BI_RGB case, according to the MSDN description:
             *
             *     The bitmap has a maximum of 2^16 colors. If the
             *     biCompression member of the BITMAPINFOHEADER is BI_RGB,
             *     the bmiColors member of BITMAPINFO is NULL. Each WORD
             *     in the bitmap array represents a single pixel. The
             *     relative intensities of red, green, and blue are
             *     represented with five bits for each color component.
             *
             * 2. BI_BITFIELDS case, according ot the MSDN description:
             *
             *     Windows 95/98/Me: When the biCompression member is
             *     BI_BITFIELDS, the system supports only the following
             *     16bpp color masks: A 5-5-5 16-bit image, where the blue
             *     mask is 0x001F, the green mask is 0x03E0, and the red mask
             *     is 0x7C00; and a 5-6-5 16-bit image, where the blue mask
             *     is 0x001F, the green mask is 0x07E0, and the red mask is
             *     0xF800.
             */
        boolean canUseRGB = false;
        boolean canUseBITFIELDS = false;
        SampleModel sm = imgType.getSampleModel();
        if (sm instanceof SinglePixelPackedSampleModel) {
            int[] sizes = ((SinglePixelPackedSampleModel) sm).getSampleSize();
            canUseRGB = true;
            canUseBITFIELDS = true;
            for (int i = 0; i < sizes.length; i++) {
                canUseRGB &= (sizes[i] == 5);
                canUseBITFIELDS &= ((sizes[i] == 5) || (i == 1 && sizes[i] == 6));
            }
        }
        return (((compressionType == BI_RGB) && canUseRGB) || ((compressionType == BI_BITFIELDS) && canUseBITFIELDS));
    }
    return true;
}

Example 30 with SampleModel

use of java.awt.image.SampleModel in project jdk8u_jdk by JetBrains.

the class BMPImageWriterSpi method canEncodeImage.

public boolean canEncodeImage(ImageTypeSpecifier type) {
    int dataType = type.getSampleModel().getDataType();
    if (dataType < DataBuffer.TYPE_BYTE || dataType > DataBuffer.TYPE_INT)
        return false;
    SampleModel sm = type.getSampleModel();
    int numBands = sm.getNumBands();
    if (!(numBands == 1 || numBands == 3))
        return false;
    if (numBands == 1 && dataType != DataBuffer.TYPE_BYTE)
        return false;
    if (dataType > DataBuffer.TYPE_BYTE && !(sm instanceof SinglePixelPackedSampleModel))
        return false;
    return true;
}