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Diffstat (limited to 'third_party/libtiff/tif_predict.c')
-rw-r--r--third_party/libtiff/tif_predict.c176
1 files changed, 126 insertions, 50 deletions
diff --git a/third_party/libtiff/tif_predict.c b/third_party/libtiff/tif_predict.c
index 8975672aec..1bb78e2097 100644
--- a/third_party/libtiff/tif_predict.c
+++ b/third_party/libtiff/tif_predict.c
@@ -1,4 +1,4 @@
-/* $Id: tif_predict.c,v 1.35 2015-08-31 15:05:57 erouault Exp $ */
+/* $Id: tif_predict.c,v 1.40 2016-11-04 09:19:13 erouault Exp $ */
/*
* Copyright (c) 1988-1997 Sam Leffler
@@ -34,18 +34,18 @@
#define PredictorState(tif) ((TIFFPredictorState*) (tif)->tif_data)
-static void horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void swabHorDiff16(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void swabHorDiff32(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc);
-static void fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int swabHorDiff16(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int swabHorDiff32(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc);
+static int fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc);
static int PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
static int PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s);
static int PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s);
@@ -80,6 +80,15 @@ PredictorSetup(TIFF* tif)
td->td_sampleformat);
return 0;
}
+ if (td->td_bitspersample != 16
+ && td->td_bitspersample != 24
+ && td->td_bitspersample != 32
+ && td->td_bitspersample != 64) { /* Should 64 be allowed? */
+ TIFFErrorExt(tif->tif_clientdata, module,
+ "Floating point \"Predictor\" not supported with %d-bit samples",
+ td->td_bitspersample);
+ return 0;
+ }
break;
default:
TIFFErrorExt(tif->tif_clientdata, module,
@@ -177,7 +186,7 @@ PredictorSetupDecode(TIFF* tif)
}
/*
* Allocate buffer to keep the decoded bytes before
- * rearranging in the ight order
+ * rearranging in the right order
*/
}
@@ -216,7 +225,7 @@ PredictorSetupEncode(TIFF* tif)
/*
* If the data is horizontally differenced 16-bit data that
* requires byte-swapping, then it must be byte swapped after
- * the differenciation step. We do this with a special-purpose
+ * the differentiation step. We do this with a special-purpose
* routine and override the normal post decoding logic that
* the library setup when the directory was read.
*/
@@ -267,13 +276,19 @@ PredictorSetupEncode(TIFF* tif)
/* - when storing into the byte stream, we explicitly mask with 0xff so */
/* as to make icc -check=conversions happy (not necessary by the standard) */
-static void
+static int
horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc)
{
tmsize_t stride = PredictorState(tif)->stride;
unsigned char* cp = (unsigned char*) cp0;
- assert((cc%stride)==0);
+ if((cc%stride)!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "horAcc8",
+ "%s", "(cc%stride)!=0");
+ return 0;
+ }
+
if (cc > stride) {
/*
* Pipeline the most common cases.
@@ -315,26 +330,32 @@ horAcc8(TIFF* tif, uint8* cp0, tmsize_t cc)
} while (cc>0);
}
}
+ return 1;
}
-static void
+static int
swabHorAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
uint16* wp = (uint16*) cp0;
tmsize_t wc = cc / 2;
TIFFSwabArrayOfShort(wp, wc);
- horAcc16(tif, cp0, cc);
+ return horAcc16(tif, cp0, cc);
}
-static void
+static int
horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
tmsize_t stride = PredictorState(tif)->stride;
uint16* wp = (uint16*) cp0;
tmsize_t wc = cc / 2;
- assert((cc%(2*stride))==0);
+ if((cc%(2*stride))!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "horAcc16",
+ "%s", "cc%(2*stride))!=0");
+ return 0;
+ }
if (wc > stride) {
wc -= stride;
@@ -343,26 +364,32 @@ horAcc16(TIFF* tif, uint8* cp0, tmsize_t cc)
wc -= stride;
} while (wc > 0);
}
+ return 1;
}
-static void
+static int
swabHorAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
{
uint32* wp = (uint32*) cp0;
tmsize_t wc = cc / 4;
TIFFSwabArrayOfLong(wp, wc);
- horAcc32(tif, cp0, cc);
+ return horAcc32(tif, cp0, cc);
}
-static void
+static int
horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
{
tmsize_t stride = PredictorState(tif)->stride;
uint32* wp = (uint32*) cp0;
tmsize_t wc = cc / 4;
- assert((cc%(4*stride))==0);
+ if((cc%(4*stride))!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "horAcc32",
+ "%s", "cc%(4*stride))!=0");
+ return 0;
+ }
if (wc > stride) {
wc -= stride;
@@ -371,12 +398,13 @@ horAcc32(TIFF* tif, uint8* cp0, tmsize_t cc)
wc -= stride;
} while (wc > 0);
}
+ return 1;
}
/*
* Floating point predictor accumulation routine.
*/
-static void
+static int
fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc)
{
tmsize_t stride = PredictorState(tif)->stride;
@@ -384,12 +412,18 @@ fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc)
tmsize_t wc = cc / bps;
tmsize_t count = cc;
uint8 *cp = (uint8 *) cp0;
- uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
+ uint8 *tmp;
- assert((cc%(bps*stride))==0);
+ if(cc%(bps*stride)!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "fpAcc",
+ "%s", "cc%(bps*stride))!=0");
+ return 0;
+ }
+ tmp = (uint8 *)_TIFFmalloc(cc);
if (!tmp)
- return;
+ return 0;
while (count > stride) {
REPEAT4(stride, cp[stride] =
@@ -411,6 +445,7 @@ fpAcc(TIFF* tif, uint8* cp0, tmsize_t cc)
}
}
_TIFFfree(tmp);
+ return 1;
}
/*
@@ -426,8 +461,7 @@ PredictorDecodeRow(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
assert(sp->decodepfunc != NULL);
if ((*sp->decoderow)(tif, op0, occ0, s)) {
- (*sp->decodepfunc)(tif, op0, occ0);
- return 1;
+ return (*sp->decodepfunc)(tif, op0, occ0);
} else
return 0;
}
@@ -450,10 +484,16 @@ PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
if ((*sp->decodetile)(tif, op0, occ0, s)) {
tmsize_t rowsize = sp->rowsize;
assert(rowsize > 0);
- assert((occ0%rowsize)==0);
+ if((occ0%rowsize) !=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "PredictorDecodeTile",
+ "%s", "occ0%rowsize != 0");
+ return 0;
+ }
assert(sp->decodepfunc != NULL);
while (occ0 > 0) {
- (*sp->decodepfunc)(tif, op0, rowsize);
+ if( !(*sp->decodepfunc)(tif, op0, rowsize) )
+ return 0;
occ0 -= rowsize;
op0 += rowsize;
}
@@ -462,14 +502,19 @@ PredictorDecodeTile(TIFF* tif, uint8* op0, tmsize_t occ0, uint16 s)
return 0;
}
-static void
+static int
horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc)
{
TIFFPredictorState* sp = PredictorState(tif);
tmsize_t stride = sp->stride;
unsigned char* cp = (unsigned char*) cp0;
- assert((cc%stride)==0);
+ if((cc%stride)!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "horDiff8",
+ "%s", "(cc%stride)!=0");
+ return 0;
+ }
if (cc > stride) {
cc -= stride;
@@ -507,9 +552,10 @@ horDiff8(TIFF* tif, uint8* cp0, tmsize_t cc)
} while ((cc -= stride) > 0);
}
}
+ return 1;
}
-static void
+static int
horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
TIFFPredictorState* sp = PredictorState(tif);
@@ -517,7 +563,12 @@ horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc)
uint16 *wp = (uint16*) cp0;
tmsize_t wc = cc/2;
- assert((cc%(2*stride))==0);
+ if((cc%(2*stride))!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "horDiff8",
+ "%s", "(cc%(2*stride))!=0");
+ return 0;
+ }
if (wc > stride) {
wc -= stride;
@@ -527,20 +578,23 @@ horDiff16(TIFF* tif, uint8* cp0, tmsize_t cc)
wc -= stride;
} while (wc > 0);
}
+ return 1;
}
-static void
+static int
swabHorDiff16(TIFF* tif, uint8* cp0, tmsize_t cc)
{
uint16* wp = (uint16*) cp0;
tmsize_t wc = cc / 2;
- horDiff16(tif, cp0, cc);
+ if( !horDiff16(tif, cp0, cc) )
+ return 0;
TIFFSwabArrayOfShort(wp, wc);
+ return 1;
}
-static void
+static int
horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc)
{
TIFFPredictorState* sp = PredictorState(tif);
@@ -548,7 +602,12 @@ horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc)
uint32 *wp = (uint32*) cp0;
tmsize_t wc = cc/4;
- assert((cc%(4*stride))==0);
+ if((cc%(4*stride))!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "horDiff32",
+ "%s", "(cc%(4*stride))!=0");
+ return 0;
+ }
if (wc > stride) {
wc -= stride;
@@ -558,23 +617,26 @@ horDiff32(TIFF* tif, uint8* cp0, tmsize_t cc)
wc -= stride;
} while (wc > 0);
}
+ return 1;
}
-static void
+static int
swabHorDiff32(TIFF* tif, uint8* cp0, tmsize_t cc)
{
uint32* wp = (uint32*) cp0;
tmsize_t wc = cc / 4;
- horDiff32(tif, cp0, cc);
+ if( !horDiff32(tif, cp0, cc) )
+ return 0;
TIFFSwabArrayOfLong(wp, wc);
+ return 1;
}
/*
* Floating point predictor differencing routine.
*/
-static void
+static int
fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc)
{
tmsize_t stride = PredictorState(tif)->stride;
@@ -582,12 +644,18 @@ fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc)
tmsize_t wc = cc / bps;
tmsize_t count;
uint8 *cp = (uint8 *) cp0;
- uint8 *tmp = (uint8 *)_TIFFmalloc(cc);
+ uint8 *tmp;
- assert((cc%(bps*stride))==0);
+ if((cc%(bps*stride))!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "fpDiff",
+ "%s", "(cc%(bps*stride))!=0");
+ return 0;
+ }
+ tmp = (uint8 *)_TIFFmalloc(cc);
if (!tmp)
- return;
+ return 0;
_TIFFmemcpy(tmp, cp0, cc);
for (count = 0; count < wc; count++) {
@@ -607,6 +675,7 @@ fpDiff(TIFF* tif, uint8* cp0, tmsize_t cc)
cp += cc - stride - 1;
for (count = cc; count > stride; count -= stride)
REPEAT4(stride, cp[stride] = (unsigned char)((cp[stride] - cp[0])&0xff); cp--)
+ return 1;
}
static int
@@ -619,7 +688,8 @@ PredictorEncodeRow(TIFF* tif, uint8* bp, tmsize_t cc, uint16 s)
assert(sp->encoderow != NULL);
/* XXX horizontal differencing alters user's data XXX */
- (*sp->encodepfunc)(tif, bp, cc);
+ if( !(*sp->encodepfunc)(tif, bp, cc) )
+ return 0;
return (*sp->encoderow)(tif, bp, cc, s);
}
@@ -654,7 +724,13 @@ PredictorEncodeTile(TIFF* tif, uint8* bp0, tmsize_t cc0, uint16 s)
rowsize = sp->rowsize;
assert(rowsize > 0);
- assert((cc0%rowsize)==0);
+ if((cc0%rowsize)!=0)
+ {
+ TIFFErrorExt(tif->tif_clientdata, "PredictorEncodeTile",
+ "%s", "(cc0%rowsize)!=0");
+ _TIFFfree( working_copy );
+ return 0;
+ }
while (cc > 0) {
(*sp->encodepfunc)(tif, bp, rowsize);
cc -= rowsize;
@@ -703,7 +779,7 @@ PredictorVGetField(TIFF* tif, uint32 tag, va_list ap)
switch (tag) {
case TIFFTAG_PREDICTOR:
- *va_arg(ap, uint16*) = sp->predictor;
+ *va_arg(ap, uint16*) = (uint16)sp->predictor;
break;
default:
return (*sp->vgetparent)(tif, tag, ap);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 12:27:50 +0000