avoid NaN in mapim
We were not avoiding NaN in float transform images, leading to segvs in some cases. Thanks afontenot see https://github.com/libvips/libvips/issues/1971
This commit is contained in:
John Cupitt
parent
5634377fa0
commit
29599e00eb
@ -13,6 +13,7 @@
|
||||
- add openslideload_source(), vipsload_source(), vipssave_target()
|
||||
- add hist path to rank for large windows on uchar images
|
||||
- better 8/16-bit choice for pngsave
|
||||
- avoid NaN in mapim [afontenot]
|
||||
|
||||
22/12/20 start 8.10.6
|
||||
- don't seek on bad file descriptors [kleisauke]
|
||||
|
||||
@ -7,6 +7,8 @@
|
||||
* - a bit quicker
|
||||
* 17/12/18
|
||||
* - we were not offsetting pixel fetches by window_offset
|
||||
* 30/1/21 afontenot
|
||||
* - avoid NaN
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -75,10 +77,58 @@ typedef VipsResampleClass VipsMapimClass;
|
||||
|
||||
G_DEFINE_TYPE( VipsMapim, vips_mapim, VIPS_TYPE_RESAMPLE );
|
||||
|
||||
/* Minmax of a line of float pixels. We have to ignore NaN.
|
||||
*/
|
||||
#define FMINMAX( TYPE ) { \
|
||||
TYPE * restrict p1 = (TYPE *) p; \
|
||||
TYPE t_max_x = max_x; \
|
||||
TYPE t_min_x = min_x; \
|
||||
TYPE t_max_y = max_y; \
|
||||
TYPE t_min_y = min_y; \
|
||||
\
|
||||
for( x = 0; x < r->width; x++ ) { \
|
||||
TYPE px = p1[0]; \
|
||||
TYPE py = p1[1]; \
|
||||
\
|
||||
if( VIPS_ISNAN( px ) || \
|
||||
VIPS_ISNAN( py ) ) \
|
||||
continue; \
|
||||
\
|
||||
if( first ) { \
|
||||
t_min_x = px; \
|
||||
t_max_x = px; \
|
||||
t_min_y = py; \
|
||||
t_max_y = py; \
|
||||
\
|
||||
first = FALSE; \
|
||||
} \
|
||||
else { \
|
||||
if( px > t_max_x ) \
|
||||
t_max_x = px; \
|
||||
else if( px < t_min_x ) \
|
||||
t_min_x = px; \
|
||||
\
|
||||
if( py > t_max_y ) \
|
||||
t_max_y = py; \
|
||||
else if( py < t_min_y ) \
|
||||
t_min_y = py; \
|
||||
} \
|
||||
\
|
||||
p1 += 2; \
|
||||
} \
|
||||
\
|
||||
if( !first ) { \
|
||||
min_x = VIPS_CLIP( 0, floor( t_min_x ), VIPS_MAX_COORD ); \
|
||||
max_x = VIPS_CLIP( 0, floor( t_max_x ), VIPS_MAX_COORD ); \
|
||||
min_y = VIPS_CLIP( 0, floor( t_min_y ), VIPS_MAX_COORD ); \
|
||||
max_y = VIPS_CLIP( 0, floor( t_max_y ), VIPS_MAX_COORD ); \
|
||||
} \
|
||||
}
|
||||
|
||||
/* Minmax of a line of pixels. Pass in a thing to convert back to int
|
||||
* coordinates.
|
||||
*/
|
||||
#define MINMAX( TYPE, CLIP_LOW, CLIP_HIGH ) { \
|
||||
#define MINMAX( TYPE, CLIP ) { \
|
||||
TYPE * restrict p1 = (TYPE *) p; \
|
||||
TYPE t_max_x = max_x; \
|
||||
TYPE t_min_x = min_x; \
|
||||
@ -112,10 +162,10 @@ G_DEFINE_TYPE( VipsMapim, vips_mapim, VIPS_TYPE_RESAMPLE );
|
||||
p1 += 2; \
|
||||
} \
|
||||
\
|
||||
min_x = CLIP_LOW( t_min_x ); \
|
||||
max_x = CLIP_HIGH( t_max_x ); \
|
||||
min_y = CLIP_LOW( t_min_y ); \
|
||||
max_y = CLIP_HIGH( t_max_y ); \
|
||||
min_x = CLIP( t_min_x ); \
|
||||
max_x = CLIP( t_max_x ); \
|
||||
min_y = CLIP( t_min_y ); \
|
||||
max_y = CLIP( t_max_y ); \
|
||||
}
|
||||
|
||||
/* All the clippers. These vary with TYPE.
|
||||
@ -137,11 +187,6 @@ G_DEFINE_TYPE( VipsMapim, vips_mapim, VIPS_TYPE_RESAMPLE );
|
||||
*/
|
||||
#define CLIP_SINT_LARGE( X ) VIPS_CLIP( 0, X, VIPS_MAX_COORD );
|
||||
|
||||
/* Float types must clip the range, and also round up or down at the extremes.
|
||||
*/
|
||||
#define CLIP_FLOAT_LOW( X ) VIPS_CLIP( 0, floor( X ), VIPS_MAX_COORD );
|
||||
#define CLIP_FLOAT_HIGH( X ) VIPS_CLIP( 0, ceil( X ), VIPS_MAX_COORD );
|
||||
|
||||
/* Scan a region and find min/max in the two axes.
|
||||
*/
|
||||
static void
|
||||
@ -165,45 +210,37 @@ vips_mapim_region_minmax( VipsRegion *region, VipsRect *r, VipsRect *bounds )
|
||||
|
||||
switch( region->im->BandFmt ) {
|
||||
case VIPS_FORMAT_UCHAR:
|
||||
MINMAX( unsigned char,
|
||||
CLIP_UINT_SMALL, CLIP_UINT_SMALL );
|
||||
MINMAX( unsigned char, CLIP_UINT_SMALL );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_CHAR:
|
||||
MINMAX( signed char,
|
||||
CLIP_SINT_SMALL, CLIP_SINT_SMALL );
|
||||
MINMAX( signed char, CLIP_SINT_SMALL );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_USHORT:
|
||||
MINMAX( unsigned short,
|
||||
CLIP_UINT_SMALL, CLIP_UINT_SMALL );
|
||||
MINMAX( unsigned short, CLIP_UINT_SMALL );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_SHORT:
|
||||
MINMAX( signed short,
|
||||
CLIP_SINT_SMALL, CLIP_SINT_SMALL );
|
||||
MINMAX( signed short, CLIP_SINT_SMALL );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_UINT:
|
||||
MINMAX( unsigned int,
|
||||
CLIP_UINT_LARGE, CLIP_UINT_LARGE );
|
||||
MINMAX( unsigned int, CLIP_UINT_LARGE );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_INT:
|
||||
MINMAX( signed int,
|
||||
CLIP_SINT_LARGE, CLIP_SINT_LARGE );
|
||||
MINMAX( signed int, CLIP_SINT_LARGE );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_FLOAT:
|
||||
case VIPS_FORMAT_COMPLEX:
|
||||
MINMAX( float,
|
||||
CLIP_FLOAT_LOW, CLIP_FLOAT_HIGH );
|
||||
FMINMAX( float );
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_DOUBLE:
|
||||
case VIPS_FORMAT_DPCOMPLEX:
|
||||
MINMAX( double,
|
||||
CLIP_FLOAT_LOW, CLIP_FLOAT_HIGH );
|
||||
FMINMAX( double );
|
||||
break;
|
||||
|
||||
default:
|
||||
@ -217,6 +254,8 @@ vips_mapim_region_minmax( VipsRegion *region, VipsRect *r, VipsRect *bounds )
|
||||
bounds->height = max_y - min_y + 1;
|
||||
}
|
||||
|
||||
/* Unsigned int types.
|
||||
*/
|
||||
#define ULOOKUP( TYPE ) { \
|
||||
TYPE * restrict p1 = (TYPE *) p; \
|
||||
\
|
||||
@ -238,6 +277,8 @@ vips_mapim_region_minmax( VipsRegion *region, VipsRect *r, VipsRect *bounds )
|
||||
} \
|
||||
}
|
||||
|
||||
/* Signed int types.
|
||||
*/
|
||||
#define LOOKUP( TYPE ) { \
|
||||
TYPE * restrict p1 = (TYPE *) p; \
|
||||
\
|
||||
@ -261,6 +302,33 @@ vips_mapim_region_minmax( VipsRegion *region, VipsRect *r, VipsRect *bounds )
|
||||
} \
|
||||
}
|
||||
|
||||
/* Float types.
|
||||
*/
|
||||
#define FLOOKUP( TYPE ) { \
|
||||
TYPE * restrict p1 = (TYPE *) p; \
|
||||
\
|
||||
for( x = 0; x < r->width; x++ ) { \
|
||||
TYPE px = p1[0]; \
|
||||
TYPE py = p1[1]; \
|
||||
\
|
||||
if( VIPS_ISNAN( px ) || \
|
||||
VIPS_ISNAN( py ) || \
|
||||
px < 0 || \
|
||||
px >= clip_width || \
|
||||
py < 0 || \
|
||||
py >= clip_height ) { \
|
||||
for( z = 0; z < ps; z++ ) \
|
||||
q[z] = 0; \
|
||||
} \
|
||||
else \
|
||||
interpolate( mapim->interpolate, q, ir[0], \
|
||||
px + window_offset, py + window_offset ); \
|
||||
\
|
||||
p1 += 2; \
|
||||
q += ps; \
|
||||
} \
|
||||
}
|
||||
|
||||
static int
|
||||
vips_mapim_gen( VipsRegion *or, void *seq, void *a, void *b, gboolean *stop )
|
||||
{
|
||||
@ -306,7 +374,6 @@ vips_mapim_gen( VipsRegion *or, void *seq, void *a, void *b, gboolean *stop )
|
||||
|
||||
/* The bounding box of that area is what we will need from @in. Add
|
||||
* enough for the interpolation stencil as well.
|
||||
*
|
||||
*/
|
||||
bounds.width += window_size - 1;
|
||||
bounds.height += window_size - 1;
|
||||
@ -361,12 +428,12 @@ vips_mapim_gen( VipsRegion *or, void *seq, void *a, void *b, gboolean *stop )
|
||||
|
||||
case VIPS_FORMAT_FLOAT:
|
||||
case VIPS_FORMAT_COMPLEX:
|
||||
LOOKUP( float ); break;
|
||||
FLOOKUP( float ); break;
|
||||
break;
|
||||
|
||||
case VIPS_FORMAT_DOUBLE:
|
||||
case VIPS_FORMAT_DPCOMPLEX:
|
||||
LOOKUP( double ); break;
|
||||
FLOOKUP( double ); break;
|
||||
|
||||
default:
|
||||
g_assert_not_reached();
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user