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diff -urN cups-filters.orig/filter/pdftoraster.cxx cups-filters/filter/pdftoraster.cxx
--- cups-filters.orig/filter/pdftoraster.cxx 2012-12-18 11:26:38.864685553 +0900
+++ cups-filters/filter/pdftoraster.cxx 2012-12-26 14:56:47.500912858 +0900
@@ -87,6 +87,7 @@
#define MAX_CHECK_COMMENT_LINES 20
#define MAX_BYTES_PER_PIXEL 32
+#define MAX_BYTES_PER_SLICE 20000000
namespace {
typedef unsigned char *(*ConvertLineFunc)(unsigned char *src,
@@ -1469,7 +1470,7 @@
}
static void writePageImage(cups_raster_t *raster, SplashBitmap *bitmap,
- int pageNo)
+ int pageNo, unsigned int nlines)
{
ConvertLineFunc convertLine;
unsigned char *lineBuf = NULL;
@@ -1505,9 +1506,9 @@
for (unsigned int plane = 0;plane < nplanes;plane++) {
unsigned char *bp = (unsigned char *)(bitmap->getDataPtr());
- bp += rowsize * bitmapoffset[1] +
- popplerBitsPerPixel * bitmapoffset[0] / 8;
- for (unsigned int h = 0;h < header.cupsHeight;h++) {
+// bp += rowsize * bitmapoffset[1] +
+// popplerBitsPerPixel * bitmapoffset[0] / 8;
+ for (unsigned int h = 0;h < nlines;h++) {
for (unsigned int band = 0;band < nbands;band++) {
dp = convertLine(bp,lineBuf,h,plane+band,header.cupsWidth,
bytesPerLine);
@@ -1622,10 +1623,6 @@
}
}
- doc->displayPage(out,pageNo,header.HWResolution[0],
- header.HWResolution[1],(landscape == 0 ? 0 : 90),
- gTrue,gTrue,gTrue);
- bitmap = out->getBitmap();
bitmapoffset[0] = margins[0] / 72.0 * header.HWResolution[0];
bitmapoffset[1] = margins[3] / 72.0 * header.HWResolution[1];
@@ -1656,8 +1653,22 @@
exit(1);
}
- /* write page image */
- writePageImage(raster,bitmap,pageNo);
+ //calculate the number of slices
+ unsigned int totalBytes = header.cupsBytesPerLine * header.cupsHeight;
+ unsigned int numSlices = totalBytes / MAX_BYTES_PER_SLICE;
+ numSlices += ((totalBytes % MAX_BYTES_PER_SLICE) > 0) ? 1 : 0;
+ unsigned int linesInSlice = header.cupsHeight / numSlices;
+ linesInSlice += header.cupsHeight % numSlices > 0 ? 1 : 0;
+ unsigned int linesRemained = header.cupsHeight;
+ for(unsigned int i=0;i<numSlices;i++) {
+ unsigned int linesToPrint = linesInSlice > linesRemained ? linesRemained : linesInSlice;
+ doc->displayPageSlice(out,pageNo,header.HWResolution[0],
+ header.HWResolution[1], 0,
+ gTrue,gTrue,gTrue, bitmapoffset[0], bitmapoffset[1] + linesInSlice*i, header.cupsWidth, linesToPrint);
+ bitmap = out->getBitmap();
+ writePageImage(raster,bitmap,pageNo, linesToPrint);
+ linesRemained = linesRemained - linesInSlice;
+ }
}
static void setPopplerColorProfile()
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