本文整理汇总了Java中com.sun.imageio.plugins.common.LZWCompressor类的典型用法代码示例。如果您正苦于以下问题：Java LZWCompressor类的具体用法？Java LZWCompressor怎么用？Java LZWCompressor使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
LZWCompressor类属于com.sun.imageio.plugins.common包，在下文中一共展示了LZWCompressor类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: writeRowsOpt
import com.sun.imageio.plugins.common.LZWCompressor; //导入依赖的package包/类
private void writeRowsOpt(byte[] data, int offset, int lineStride,
LZWCompressor compressor,
int dy, int ddy, int dw, int dh,
int numRowsWritten, int progressReportRowPeriod)
throws IOException {
if (DEBUG) System.out.println("Writing optimized");
offset += dy*lineStride;
lineStride *= ddy;
for (int y = dy; y < dh; y += ddy) {
if (numRowsWritten % progressReportRowPeriod == 0) {
if (abortRequested()) {
processWriteAborted();
return;
}
processImageProgress((numRowsWritten*100.0F)/dh);
}
compressor.compress(data, offset, dw);
numRowsWritten++;
offset += lineStride;
}
}
示例2: writeRowsOpt
import com.sun.imageio.plugins.common.LZWCompressor; //导入依赖的package包/类
private void writeRowsOpt(byte[] data, int offset, int lineStride,
LZWCompressor compressor,
int dy, int ddy, int dw, int dh,
int numRowsWritten, int progressReportRowPeriod)
throws IOException {
if (DEBUG) System.out.println("Writing optimized");
offset += dy*lineStride;
lineStride *= ddy;
for (int y = dy; y < dh; y += ddy) {
if (numRowsWritten % progressReportRowPeriod == 0) {
processImageProgress((numRowsWritten*100.0F)/dh);
if (abortRequested()) {
processWriteAborted();
return;
}
}
compressor.compress(data, offset, dw);
numRowsWritten++;
offset += lineStride;
}
}
示例3: writeRows
import com.sun.imageio.plugins.common.LZWCompressor; //导入依赖的package包/类
private void writeRows(RenderedImage image, LZWCompressor compressor,
int sx, int sdx, int sy, int sdy, int sw,
int dy, int ddy, int dw, int dh,
int numRowsWritten, int progressReportRowPeriod)
throws IOException {
if (DEBUG) System.out.println("Writing unoptimized");
int[] sbuf = new int[sw];
byte[] dbuf = new byte[dw];
Raster raster =
image.getNumXTiles() == 1 && image.getNumYTiles() == 1 ?
image.getTile(0, 0) : image.getData();
for (int y = dy; y < dh; y += ddy) {
if (numRowsWritten % progressReportRowPeriod == 0) {
if (abortRequested()) {
processWriteAborted();
return;
}
processImageProgress((numRowsWritten*100.0F)/dh);
}
raster.getSamples(sx, sy, sw, 1, 0, sbuf);
for (int i = 0, j = 0; i < dw; i++, j += sdx) {
dbuf[i] = (byte)sbuf[j];
}
compressor.compress(dbuf, 0, dw);
numRowsWritten++;
sy += sdy;
}
}
示例4: writeRows
import com.sun.imageio.plugins.common.LZWCompressor; //导入依赖的package包/类
private void writeRows(RenderedImage image, LZWCompressor compressor,
int sx, int sdx, int sy, int sdy, int sw,
int dy, int ddy, int dw, int dh,
int numRowsWritten, int progressReportRowPeriod)
throws IOException {
if (DEBUG) System.out.println("Writing unoptimized");
int[] sbuf = new int[sw];
byte[] dbuf = new byte[dw];
Raster raster =
image.getNumXTiles() == 1 && image.getNumYTiles() == 1 ?
image.getTile(0, 0) : image.getData();
for (int y = dy; y < dh; y += ddy) {
if (numRowsWritten % progressReportRowPeriod == 0) {
processImageProgress((numRowsWritten*100.0F)/dh);
if (abortRequested()) {
processWriteAborted();
return;
}
}
raster.getSamples(sx, sy, sw, 1, 0, sbuf);
for (int i = 0, j = 0; i < dw; i++, j += sdx) {
dbuf[i] = (byte)sbuf[j];
}
compressor.compress(dbuf, 0, dw);
numRowsWritten++;
sy += sdy;
}
}
示例5: encode
import com.sun.imageio.plugins.common.LZWCompressor; //导入依赖的package包/类
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;
}