Examples of LZWCompressor

Examples of ae.com.sun.imageio.plugins.common.LZWCompressor

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        if (initCodeSize == 1) {
            initCodeSize++;
        }
        stream.write(initCodeSize);

        LZWCompressor compressor =
            new LZWCompressor(stream, initCodeSize, false);

        boolean isOptimizedCase =
            periodX == 1 && periodY == 1 &&
            sampleModel instanceof ComponentSampleModel &&
            image.getNumXTiles() == 1 && image.getNumYTiles() == 1 &&
            image.getTile(0, 0).getDataBuffer() instanceof DataBufferByte;

        int numRowsWritten = 0;

        int progressReportRowPeriod = Math.max(destHeight/20, 1);

        processImageStarted(imageIndex);

        if (interlaceFlag) {
            if (DEBUG) System.out.println("Writing interlaced");

            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             4, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             2, 4, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRowsOpt(data, offset, lineStride, compressor,
                             1, 2, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, 8*periodY,
                          sourceWidth,
                          0, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 4*periodY, 8*periodY,
                          sourceWidth,
                          4, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 2*periodY, 4*periodY,
                          sourceWidth,
                          2, 4, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + periodY, 2*periodY,
                          sourceWidth,
                          1, 2, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        } else {
            if (DEBUG) System.out.println("Writing non-interlaced");

            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 1, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, periodY,
                          sourceWidth,
                          0, 1, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        }

        if (abortRequested()) {
            return;
        }

        processImageProgress(100.0F);

        compressor.flush();

        stream.write(0x00);

        processImageComplete();
    }
View Full Code Here

Examples of com.sun.imageio.plugins.common.LZWCompressor

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        if (initCodeSize == 1) {
            initCodeSize++;
        }
        stream.write(initCodeSize);

        LZWCompressor compressor =
            new LZWCompressor(stream, initCodeSize, false);

        /* At this moment we know that input image is indexed image.
         * We can directly copy data iff:
         *   - no subsampling required (periodX = 1, periodY = 0)
         *   - we can access data directly (image is non-tiled,
         *     i.e. image data are in single block)
         *   - we can calculate offset in data buffer (next 3 lines)
         */
        boolean isOptimizedCase =
            periodX == 1 && periodY == 1 &&
            image.getNumXTiles() == 1 && image.getNumYTiles() == 1 &&
            sampleModel instanceof ComponentSampleModel &&
            image.getTile(0, 0) instanceof ByteComponentRaster &&
            image.getTile(0, 0).getDataBuffer() instanceof DataBufferByte;

        int numRowsWritten = 0;

        int progressReportRowPeriod = Math.max(destHeight/20, 1);

        processImageStarted(imageIndex);

        if (interlaceFlag) {
            if (DEBUG) System.out.println("Writing interlaced");

            if (isOptimizedCase) {
                ByteComponentRaster tile =
                    (ByteComponentRaster)image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                // take into account the raster data offset
                offset += tile.getDataOffset(0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             4, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             2, 4, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRowsOpt(data, offset, lineStride, compressor,
                             1, 2, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, 8*periodY,
                          sourceWidth,
                          0, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 4*periodY, 8*periodY,
                          sourceWidth,
                          4, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 2*periodY, 4*periodY,
                          sourceWidth,
                          2, 4, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + periodY, 2*periodY,
                          sourceWidth,
                          1, 2, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        } else {
            if (DEBUG) System.out.println("Writing non-interlaced");

            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 1, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, periodY,
                          sourceWidth,
                          0, 1, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        }

        if (abortRequested()) {
            return;
        }

        processImageProgress(100.0F);

        compressor.flush();

        stream.write(0x00);

        processImageComplete();
    }
View Full Code Here

Examples of com.sun.imageio.plugins.common.LZWCompressor

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        if (initCodeSize == 1) {
            initCodeSize++;
        }
        stream.write(initCodeSize);
       
        LZWCompressor compressor =
            new LZWCompressor(stream, initCodeSize, false);
       
        boolean isOptimizedCase =
            periodX == 1 && periodY == 1 &&
            sampleModel instanceof ComponentSampleModel &&
            image.getNumXTiles() == 1 && image.getNumYTiles() == 1 &&
            image.getTile(0, 0).getDataBuffer() instanceof DataBufferByte;
       
        int numRowsWritten = 0;
       
        int progressReportRowPeriod = Math.max(destHeight/20, 1);
       
        processImageStarted(imageIndex);
       
        if (interlaceFlag) {
            if (DEBUG) System.out.println("Writing interlaced");
           
            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += destHeight/8;
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             4, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 4)/8;
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             2, 4, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 2)/4;
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             1, 2, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, 8*periodY,
                          sourceWidth,
                          0, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += destHeight/8;
               
                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 4*periodY, 8*periodY,
                          sourceWidth,
                          4, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 4)/8;
               
                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 2*periodY, 4*periodY,
                          sourceWidth,
                          2, 4, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 2)/4;
               
                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + periodY, 2*periodY,
                          sourceWidth,
                          1, 2, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        } else {
            if (DEBUG) System.out.println("Writing non-interlaced");
           
            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 1, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, periodY,
                          sourceWidth,
                          0, 1, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        }
       
        if (abortRequested()) {
            return;
        }
       
        processImageProgress(100.0F);

        compressor.flush();
       
        stream.write(0x00);
       
        processImageComplete();
    }
View Full Code Here

Examples of com.sun.imageio.plugins.common.LZWCompressor

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        if (initCodeSize == 1) {
            initCodeSize++;
        }
        stream.write(initCodeSize);

        LZWCompressor compressor =
            new LZWCompressor(stream, initCodeSize, false);

        /* At this moment we know that input image is indexed image.
         * We can directly copy data iff:
         *   - no subsampling required (periodX = 1, periodY = 0)
         *   - we can access data directly (image is non-tiled,
         *     i.e. image data are in single block)
         *   - we can calculate offset in data buffer (next 3 lines)
         */
        boolean isOptimizedCase =
            periodX == 1 && periodY == 1 &&
            image.getNumXTiles() == 1 && image.getNumYTiles() == 1 &&
            sampleModel instanceof ComponentSampleModel &&
            image.getTile(0, 0) instanceof ByteComponentRaster &&
            image.getTile(0, 0).getDataBuffer() instanceof DataBufferByte;

        int numRowsWritten = 0;

        int progressReportRowPeriod = Math.max(destHeight/20, 1);

        processImageStarted(imageIndex);

        if (interlaceFlag) {
            if (DEBUG) System.out.println("Writing interlaced");

            if (isOptimizedCase) {
                ByteComponentRaster tile =
                    (ByteComponentRaster)image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                // take into account the raster data offset
                offset += tile.getDataOffset(0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             4, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             2, 4, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRowsOpt(data, offset, lineStride, compressor,
                             1, 2, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, 8*periodY,
                          sourceWidth,
                          0, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 4*periodY, 8*periodY,
                          sourceWidth,
                          4, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 2*periodY, 4*periodY,
                          sourceWidth,
                          2, 4, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + periodY, 2*periodY,
                          sourceWidth,
                          1, 2, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        } else {
            if (DEBUG) System.out.println("Writing non-interlaced");

            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 1, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, periodY,
                          sourceWidth,
                          0, 1, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        }

        if (abortRequested()) {
            return;
        }

        processImageProgress(100.0F);

        compressor.flush();

        stream.write(0x00);

        processImageComplete();
    }
View Full Code Here

Examples of com.sun.imageio.plugins.common.LZWCompressor

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        if (initCodeSize == 1) {
            initCodeSize++;
        }
        stream.write(initCodeSize);

        LZWCompressor compressor =
            new LZWCompressor(stream, initCodeSize, false);

        boolean isOptimizedCase =
            periodX == 1 && periodY == 1 &&
            sampleModel instanceof ComponentSampleModel &&
            image.getNumXTiles() == 1 && image.getNumYTiles() == 1 &&
            image.getTile(0, 0).getDataBuffer() instanceof DataBufferByte;

        int numRowsWritten = 0;

        int progressReportRowPeriod = Math.max(destHeight/20, 1);

        processImageStarted(imageIndex);

        if (interlaceFlag) {
            if (DEBUG) System.out.println("Writing interlaced");

            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             4, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRowsOpt(data, offset, lineStride, compressor,
                             2, 4, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRowsOpt(data, offset, lineStride, compressor,
                             1, 2, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, 8*periodY,
                          sourceWidth,
                          0, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += destHeight/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 4*periodY, 8*periodY,
                          sourceWidth,
                          4, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 4)/8;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 2*periodY, 4*periodY,
                          sourceWidth,
                          2, 4, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);

                if (abortRequested()) {
                    return;
                }

                numRowsWritten += (destHeight - 2)/4;

                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + periodY, 2*periodY,
                          sourceWidth,
                          1, 2, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        } else {
            if (DEBUG) System.out.println("Writing non-interlaced");

            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
                int offset = csm.getOffset(sourceXOffset, sourceYOffset, 0);
                int lineStride = csm.getScanlineStride();

                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 1, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, periodY,
                          sourceWidth,
                          0, 1, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        }

        if (abortRequested()) {
            return;
        }

        processImageProgress(100.0F);

        compressor.flush();

        stream.write(0x00);

        processImageComplete();
    }
View Full Code Here

Examples of com.sun.media.imageioimpl.common.LZWCompressor

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    public int encode(byte[] b, int off,
                      int width, int height,
                      int[] bitsPerSample,
                      int scanlineStride) throws IOException {

        LZWCompressor lzwCompressor = new LZWCompressor(stream, 8, true);

  int samplesPerPixel = bitsPerSample.length;
        int bitsPerPixel = 0;
        for (int i = 0; i < samplesPerPixel; i++) {
            bitsPerPixel += bitsPerSample[i];
        }
        int bytesPerRow = (bitsPerPixel*width + 7)/8;

        long initialStreamPosition = stream.getStreamPosition();

        boolean usePredictor =
            predictor == BaselineTIFFTagSet.PREDICTOR_HORIZONTAL_DIFFERENCING;

        if(bytesPerRow == scanlineStride && !usePredictor) {
            lzwCompressor.compress(b, off, bytesPerRow*height);
        } else {
            byte[] rowBuf = usePredictor ? new byte[bytesPerRow] : null;
            for(int i = 0; i < height; i++) {
                if(usePredictor) {
                    // Cannot modify b[] in place as it might be a data
                    // array from the image being written so make a copy.
                    System.arraycopy(b, off, rowBuf, 0, bytesPerRow);
                    for(int j = bytesPerRow - 1; j >= samplesPerPixel; j--) {
                        rowBuf[j] -= rowBuf[j - samplesPerPixel];
                    }
                    lzwCompressor.compress(rowBuf, 0, bytesPerRow);
                } else {
                    lzwCompressor.compress(b, off, bytesPerRow);
                }
                off += scanlineStride;
            }
        }

        lzwCompressor.flush();

        int bytesWritten =
            (int)(stream.getStreamPosition() - initialStreamPosition);

        return bytesWritten;
View Full Code Here

Examples of com.sun.media.imageioimpl.common.LZWCompressor

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        if (initCodeSize == 1) {
            initCodeSize++;
        }
        stream.write(initCodeSize);
       
        LZWCompressor compressor =
            new LZWCompressor(stream, initCodeSize, false);
       
        boolean isOptimizedCase =
            periodX == 1 && periodY == 1 &&
            sampleModel instanceof ComponentSampleModel &&
            image.getNumXTiles() == 1 && image.getNumYTiles() == 1 &&
            image.getTile(0, 0).getDataBuffer() instanceof DataBufferByte;
       
        int numRowsWritten = 0;
       
        int progressReportRowPeriod = Math.max(destHeight/20, 1);
       
        processImageStarted(imageIndex);
       
        if (interlaceFlag) {
            if (DEBUG) System.out.println("Writing interlaced");
           
            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
    int offset = csm.getOffset(sourceXOffset -
             tile.getSampleModelTranslateX(),
             sourceYOffset -
             tile.getSampleModelTranslateY(),
             0);
                int lineStride = csm.getScanlineStride();
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += destHeight/8;
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             4, 8, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 4)/8;
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             2, 4, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 2)/4;
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             1, 2, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, 8*periodY,
                          sourceWidth,
                          0, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += destHeight/8;
               
                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 4*periodY, 8*periodY,
                          sourceWidth,
                          4, 8, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 4)/8;
               
                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + 2*periodY, 4*periodY,
                          sourceWidth,
                          2, 4, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
               
                if (abortRequested()) {
                    return;
                }
               
                numRowsWritten += (destHeight - 2)/4;
               
                writeRows(image, compressor, sourceXOffset, periodX,
                          sourceYOffset + periodY, 2*periodY,
                          sourceWidth,
                          1, 2, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        } else {
            if (DEBUG) System.out.println("Writing non-interlaced");
           
            if (isOptimizedCase) {
                Raster tile = image.getTile(0, 0);
                byte[] data = ((DataBufferByte)tile.getDataBuffer()).getData();
                ComponentSampleModel csm =
                    (ComponentSampleModel)tile.getSampleModel();
    int offset = csm.getOffset(sourceXOffset -
             tile.getSampleModelTranslateX(),
             sourceYOffset -
             tile.getSampleModelTranslateY(),
             0);
                int lineStride = csm.getScanlineStride();
               
                writeRowsOpt(data, offset, lineStride, compressor,
                             0, 1, destWidth, destHeight,
                             numRowsWritten, progressReportRowPeriod);
            } else {
                writeRows(image, compressor,
                          sourceXOffset, periodX,
                          sourceYOffset, periodY,
                          sourceWidth,
                          0, 1, destWidth, destHeight,
                          numRowsWritten, progressReportRowPeriod);
            }
        }
       
        if (abortRequested()) {
            return;
        }
       
        processImageProgress(100.0F);

        compressor.flush();
       
        stream.write(0x00);
       
        processImageComplete();
    }
View Full Code Here
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