/* Do a map.
*/
static int
maplut_gen( REGION *or, void *vseq, void *a, void *b )
{
Seq *seq = (Seq *) vseq;
IMAGE *in = (IMAGE *) a;
LutInfo *st = (LutInfo *) b;
REGION *ir = seq->ir;
Rect *r = &or->valid;
int le = r->left;
int to = r->top;
int bo = IM_RECT_BOTTOM(r);
int np = r->width; /* Pels across region */
int ne = IM_REGION_N_ELEMENTS( or ); /* Number of elements */
int x, y, z, i;
/* Get input ready.
*/
if( im_prepare( ir, r ) )
return( -1 );
/* Process!
*/
if( st->nb == 1 )
/* One band lut.
*/
outer_switch( loop1, loop1c, loop1g, loop1cg )
else
/* Many band lut.
*/
if( ir->im->Bands == 1 )
/* ... but 1 band input.
*/
outer_switch( loop1m, loop1cm, loop1gm, loop1cgm )
else
outer_switch( loop, loopc, loopg, loopcg )
return( 0 );
}
/* Do a map.
*/
static int
vips_maplut_gen( VipsRegion *or, void *vseq, void *a, void *b,
gboolean *stop )
{
VipsMaplutSequence *seq = (VipsMaplutSequence *) vseq;
VipsImage *in = (VipsImage *) a;
VipsMaplut *maplut = (VipsMaplut *) b;
VipsRegion *ir = seq->ir;
VipsRect *r = &or->valid;
int le = r->left;
int to = r->top;
int bo = VIPS_RECT_BOTTOM( r );
int np = r->width; /* Pels across region */
int ne = VIPS_REGION_N_ELEMENTS( or ); /* Number of elements */
int x, y, z, i;
if( vips_region_prepare( ir, r ) )
return( -1 );
if( maplut->nb == 1 )
/* One band lut.
*/
outer_switch( loop1, loop1c, loop1g, loop1cg )
else
/* Many band lut.
*/
if( in->Bands == 1 )
/* ... but 1 band input.
*/
outer_switch( loop1m, loop1cm, loop1gm, loop1cgm )
else
outer_switch( loop, loopc, loopg, loopcg )
return( 0 );
}
