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Use the spec-mandated default YCbCrSubSampling values in strip size
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calculations, if the YCBCRSUBSAMPLING tag hasn't been provided.
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See bug #603703.
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Filed upstream at http://bugzilla.maptools.org/show_bug.cgi?id=2215
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NB: must be applied after libtiff-scanlinesize.patch to avoid fuzz issues.
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diff -Naur tiff-3.9.2.orig/libtiff/tif_strip.c tiff-3.9.2/libtiff/tif_strip.c
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--- tiff-3.9.2.orig/libtiff/tif_strip.c 2006-03-25 13:04:35.000000000 -0500
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+++ tiff-3.9.2/libtiff/tif_strip.c 2010-06-14 12:00:49.000000000 -0400
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@@ -124,9 +124,9 @@
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uint16 ycbcrsubsampling[2];
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tsize_t w, scanline, samplingarea;
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- TIFFGetField( tif, TIFFTAG_YCBCRSUBSAMPLING,
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- ycbcrsubsampling + 0,
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- ycbcrsubsampling + 1 );
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+ TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING,
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+ ycbcrsubsampling + 0,
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+ ycbcrsubsampling + 1);
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samplingarea = ycbcrsubsampling[0]*ycbcrsubsampling[1];
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if (samplingarea == 0) {
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@@ -234,9 +234,9 @@
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&& !isUpSampled(tif)) {
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uint16 ycbcrsubsampling[2];
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- TIFFGetField(tif, TIFFTAG_YCBCRSUBSAMPLING,
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- ycbcrsubsampling + 0,
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- ycbcrsubsampling + 1);
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+ TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING,
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+ ycbcrsubsampling + 0,
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+ ycbcrsubsampling + 1);
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if (ycbcrsubsampling[0]*ycbcrsubsampling[1] == 0) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
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@@ -308,9 +308,9 @@
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&& !isUpSampled(tif)) {
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uint16 ycbcrsubsampling[2];
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- TIFFGetField(tif, TIFFTAG_YCBCRSUBSAMPLING,
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- ycbcrsubsampling + 0,
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- ycbcrsubsampling + 1);
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+ TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING,
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+ ycbcrsubsampling + 0,
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+ ycbcrsubsampling + 1);
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if (ycbcrsubsampling[0]*ycbcrsubsampling[1] == 0) {
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TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
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