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;
}
}
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;
}
}