libtiff/libtiff-jpeg-scanline.patch
2009-12-17 00:57:50 +00:00

44 lines
1.4 KiB
Diff

Upstream patch that partially fixes bug #460322. The tiffcmp case is
still there, but this is a step forward anyhow, so going with it for now.
diff -Naur tiff-3.9.2.orig/libtiff/tif_jpeg.c tiff-3.9.2/libtiff/tif_jpeg.c
--- tiff-3.9.2.orig/libtiff/tif_jpeg.c 2009-08-30 12:21:46.000000000 -0400
+++ tiff-3.9.2/libtiff/tif_jpeg.c 2009-12-05 16:48:56.000000000 -0500
@@ -1613,7 +1613,11 @@
* Must recalculate cached tile size in case sampling state changed.
* Should we really be doing this now if image size isn't set?
*/
- tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+ if( tif->tif_tilesize > 0 )
+ tif->tif_tilesize = isTiled(tif) ? TIFFTileSize(tif) : (tsize_t) -1;
+
+ if(tif->tif_scanlinesize > 0 )
+ tif->tif_scanlinesize = TIFFScanlineSize(tif);
}
static int
@@ -1741,13 +1745,21 @@
return;
}
else
- {
+ {
if( !TIFFFillStrip( tif, 0 ) )
return;
}
TIFFSetField( tif, TIFFTAG_YCBCRSUBSAMPLING,
(uint16) sp->h_sampling, (uint16) sp->v_sampling );
+
+ /*
+ ** We want to clear the loaded strip so the application has time
+ ** to set JPEGCOLORMODE or other behavior modifiers. This essentially
+ ** undoes the JPEGPreDecode triggers by TIFFFileStrip(). (#1936)
+ */
+ tif->tif_curstrip = -1;
+
#endif /* CHECK_JPEG_YCBCR_SUBSAMPLING */
}