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path: root/third_party/libtiff/tif_getimage.c
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Diffstat (limited to 'third_party/libtiff/tif_getimage.c')
-rw-r--r--third_party/libtiff/tif_getimage.c122
1 files changed, 74 insertions, 48 deletions
diff --git a/third_party/libtiff/tif_getimage.c b/third_party/libtiff/tif_getimage.c
index 84cc1d1a76..d1f1f45ac6 100644
--- a/third_party/libtiff/tif_getimage.c
+++ b/third_party/libtiff/tif_getimage.c
@@ -627,7 +627,7 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
uint32 col, row, y, rowstoread;
tmsize_t pos;
uint32 tw, th;
- unsigned char* buf;
+ unsigned char* buf = NULL;
int32 fromskew, toskew;
int64 safeskew;
uint32 nrow;
@@ -636,13 +636,14 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
int32 this_toskew, leftmost_toskew;
int32 leftmost_fromskew;
uint32 leftmost_tw;
+ tmsize_t bufsize;
- buf = (unsigned char*) _TIFFmalloc(TIFFTileSize(tif));
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer");
- return (0);
+ bufsize = TIFFTileSize(tif);
+ if (bufsize == 0) {
+ TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer");
+ return (0);
}
- _TIFFmemset(buf, 0, TIFFTileSize(tif));
+
TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
@@ -691,8 +692,9 @@ gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
col = img->col_offset;
while (tocol < w)
{
- if (TIFFReadTile(tif, buf, col,
- row+img->row_offset, 0, 0)==(tmsize_t)(-1) && img->stoponerr)
+ if (_TIFFReadTileAndAllocBuffer(tif, (void**) &buf, bufsize, col,
+ row+img->row_offset, 0, 0)==(tmsize_t)(-1) &&
+ (buf == NULL || img->stoponerr))
{
ret = 0;
break;
@@ -772,11 +774,11 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
uint32 col, row, y, rowstoread;
tmsize_t pos;
uint32 tw, th;
- unsigned char* buf;
- unsigned char* p0;
- unsigned char* p1;
- unsigned char* p2;
- unsigned char* pa;
+ unsigned char* buf = NULL;
+ unsigned char* p0 = NULL;
+ unsigned char* p1 = NULL;
+ unsigned char* p2 = NULL;
+ unsigned char* pa = NULL;
tmsize_t tilesize;
tmsize_t bufsize;
int32 fromskew, toskew;
@@ -795,16 +797,7 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate");
return (0);
}
- buf = (unsigned char*) _TIFFmalloc(bufsize);
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer");
- return (0);
- }
- _TIFFmemset(buf, 0, bufsize);
- p0 = buf;
- p1 = p0 + tilesize;
- p2 = p1 + tilesize;
- pa = (alpha?(p2+tilesize):NULL);
+
TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
@@ -824,7 +817,6 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
case PHOTOMETRIC_MINISBLACK:
case PHOTOMETRIC_PALETTE:
colorchannels = 1;
- p2 = p1 = p0;
break;
default:
@@ -849,7 +841,30 @@ gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
col = img->col_offset;
while (tocol < w)
{
- if (TIFFReadTile(tif, p0, col,
+ if( buf == NULL )
+ {
+ if (_TIFFReadTileAndAllocBuffer(
+ tif, (void**) &buf, bufsize, col,
+ row+img->row_offset,0,0)==(tmsize_t)(-1)
+ && (buf == NULL || img->stoponerr))
+ {
+ ret = 0;
+ break;
+ }
+ p0 = buf;
+ if( colorchannels == 1 )
+ {
+ p2 = p1 = p0;
+ pa = (alpha?(p0+3*tilesize):NULL);
+ }
+ else
+ {
+ p1 = p0 + tilesize;
+ p2 = p1 + tilesize;
+ pa = (alpha?(p2+tilesize):NULL);
+ }
+ }
+ else if (TIFFReadTile(tif, p0, col,
row+img->row_offset,0,0)==(tmsize_t)(-1) && img->stoponerr)
{
ret = 0;
@@ -940,13 +955,14 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
tileContigRoutine put = img->put.contig;
uint32 row, y, nrow, nrowsub, rowstoread;
tmsize_t pos;
- unsigned char* buf;
+ unsigned char* buf = NULL;
uint32 rowsperstrip;
uint16 subsamplinghor,subsamplingver;
uint32 imagewidth = img->width;
tmsize_t scanline;
int32 fromskew, toskew;
int ret = 1, flip;
+ tmsize_t maxstripsize;
TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, &subsamplingver);
if( subsamplingver == 0 ) {
@@ -954,12 +970,7 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
return (0);
}
- buf = (unsigned char*) _TIFFmalloc(TIFFStripSize(tif));
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for strip buffer");
- return (0);
- }
- _TIFFmemset(buf, 0, TIFFStripSize(tif));
+ maxstripsize = TIFFStripSize(tif);
flip = setorientation(img);
if (flip & FLIP_VERTICALLY) {
@@ -981,11 +992,12 @@ gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
nrowsub = nrow;
if ((nrowsub%subsamplingver)!=0)
nrowsub+=subsamplingver-nrowsub%subsamplingver;
- if (TIFFReadEncodedStrip(tif,
+ if (_TIFFReadEncodedStripAndAllocBuffer(tif,
TIFFComputeStrip(tif,row+img->row_offset, 0),
- buf,
+ (void**)(&buf),
+ maxstripsize,
((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1)
- && img->stoponerr)
+ && (buf == NULL || img->stoponerr))
{
ret = 0;
break;
@@ -1029,8 +1041,8 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
{
TIFF* tif = img->tif;
tileSeparateRoutine put = img->put.separate;
- unsigned char *buf;
- unsigned char *p0, *p1, *p2, *pa;
+ unsigned char *buf = NULL;
+ unsigned char *p0 = NULL, *p1 = NULL, *p2 = NULL, *pa = NULL;
uint32 row, y, nrow, rowstoread;
tmsize_t pos;
tmsize_t scanline;
@@ -1049,15 +1061,6 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate");
return (0);
}
- p0 = buf = (unsigned char *)_TIFFmalloc(bufsize);
- if (buf == 0) {
- TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "No space for tile buffer");
- return (0);
- }
- _TIFFmemset(buf, 0, bufsize);
- p1 = p0 + stripsize;
- p2 = p1 + stripsize;
- pa = (alpha?(p2+stripsize):NULL);
flip = setorientation(img);
if (flip & FLIP_VERTICALLY) {
@@ -1075,7 +1078,6 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
case PHOTOMETRIC_MINISBLACK:
case PHOTOMETRIC_PALETTE:
colorchannels = 1;
- p2 = p1 = p0;
break;
default:
@@ -1091,7 +1093,31 @@ gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
nrow = (row + rowstoread > h ? h - row : rowstoread);
offset_row = row + img->row_offset;
- if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
+ if( buf == NULL )
+ {
+ if (_TIFFReadEncodedStripAndAllocBuffer(
+ tif, TIFFComputeStrip(tif, offset_row, 0),
+ (void**) &buf, bufsize,
+ ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
+ && (buf == NULL || img->stoponerr))
+ {
+ ret = 0;
+ break;
+ }
+ p0 = buf;
+ if( colorchannels == 1 )
+ {
+ p2 = p1 = p0;
+ pa = (alpha?(p0+3*stripsize):NULL);
+ }
+ else
+ {
+ p1 = p0 + stripsize;
+ p2 = p1 + stripsize;
+ pa = (alpha?(p2+stripsize):NULL);
+ }
+ }
+ else if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
&& img->stoponerr)
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 09:17:49 +0000