XFA: Upgrade to libtiff 4.0.6.

third_party/libtiff/tif_next.c

Index: third_party/libtiff/tif_next.c
diff --git a/third_party/tiff_v403/tif_next.c b/third_party/libtiff/tif_next.c
similarity index 86%
rename from third_party/tiff_v403/tif_next.c
rename to third_party/libtiff/tif_next.c
index 9f2f6d5307923dbcce4c11085fbddf945394fe32..17e031111a195a56c70e1e02df6d5a4439676e88 100644
--- a/third_party/tiff_v403/tif_next.c
+++ b/third_party/libtiff/tif_next.c
@@ -1,4 +1,4 @@
-/* $Id: tif_next.c,v 1.13 2010-03-10 18:56:48 bfriesen Exp $ */
+/* $Id: tif_next.c,v 1.16 2014-12-29 12:09:11 erouault Exp $ */
 
 /*
  * Copyright (c) 1988-1997 Sam Leffler
@@ -23,6 +23,7 @@
  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
  * OF THIS SOFTWARE.
  */
+
 #include "tiffiop.h"
 #ifdef NEXT_SUPPORT
 /*
@@ -70,7 +71,7 @@ NeXTDecode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
 		TIFFErrorExt(tif->tif_clientdata, module, "Fractional scanlines cannot be read");
 		return (0);
 	}
-	for (row = buf; occ > 0; occ -= scanline, row += scanline) {
+	for (row = buf; cc > 0 && occ > 0; occ -= scanline, row += scanline) {
 		n = *bp++, cc--;
 		switch (n) {
 		case LITERALROW:
@@ -89,6 +90,8 @@ NeXTDecode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
 			 * The scanline has a literal span that begins at some
 			 * offset.
 			 */
+			if( cc < 4 )
+				goto bad;
 			off = (bp[0] * 256) + bp[1];
 			n = (bp[2] * 256) + bp[3];
 			if (cc < 4+n || off+n > scanline)
@@ -101,6 +104,8 @@ NeXTDecode(TIFF* tif, uint8* buf, tmsize_t occ, uint16 s)
 		default: {
 			uint32 npixels = 0, grey;
 			uint32 imagewidth = tif->tif_dir.td_imagewidth;
+            if( isTiled(tif) )
+                imagewidth = tif->tif_dir.td_tilewidth;
 
 			/*
 			 * The scanline is composed of a sequence of constant
@@ -138,10 +143,27 @@ bad:
 	return (0);
 }
 
+static int
+NeXTPreDecode(TIFF* tif, uint16 s)
+{
+	static const char module[] = "NeXTPreDecode";
+	TIFFDirectory *td = &tif->tif_dir;
+	(void)s;
+
+	if( td->td_bitspersample != 2 )
+	{
+		TIFFErrorExt(tif->tif_clientdata, module, "Unsupported BitsPerSample = %d",
+					 td->td_bitspersample);
+		return (0);
+	}
+	return (1);
+}
+	
 int
 TIFFInitNeXT(TIFF* tif, int scheme)
 {
 	(void) scheme;
+	tif->tif_predecode = NeXTPreDecode;  
 	tif->tif_decoderow = NeXTDecode;  
 	tif->tif_decodestrip = NeXTDecode;  
 	tif->tif_decodetile = NeXTDecode;
@@ -157,4 +179,3 @@ TIFFInitNeXT(TIFF* tif, int scheme)
  * fill-column: 78
  * End:
  */
-