static int
ifthenelse( IMAGE *c, IMAGE *a, IMAGE *b, IMAGE *out )
{
IMAGE **in;
/* Check args.
*/
if( im_check_uncoded( "im_ifthenelse", c ) ||
im_check_coding_known( "im_ifthenelse", a ) ||
im_check_coding_known( "im_ifthenelse", b ) ||
im_check_format( "ifthenelse", c, IM_BANDFMT_UCHAR ) ||
im_check_format_same( "ifthenelse", a, b ) ||
im_check_bands_same( "ifthenelse", a, b ) ||
im_check_bands_1orn( "im_ifthenelse", c, a ) ||
im_piocheck( c, out ) ||
im_pincheck( a ) ||
im_pincheck( b ) )
return( -1 );
/* Make output image.
*/
if( im_demand_hint( out, IM_THINSTRIP, c, a, b, NULL ) ||
im_cp_descv( out, a, b, c, NULL ) ||
!(in = im_allocate_input_array( out, c, a, b, NULL )) ||
im_generate( out,
im_start_many, ifthenelse_gen, im_stop_many,
in, NULL ) )
return( -1 );
return( 0 );
}
/* Raw fastcor, with no borders.
*/
int
im_fastcor_raw( IMAGE *in, IMAGE *ref, IMAGE *out )
{
/* PIO between in and out; WIO from ref.
*/
if( im_piocheck( in, out ) ||
im_incheck( ref ) )
return( -1 );
/* Check sizes.
*/
if( in->Xsize < ref->Xsize || in->Ysize < ref->Ysize ) {
im_error( "im_fastcor", "%s",
_( "ref not smaller than or equal to in" ) );
return( -1 );
}
/* Check types.
*/
if( im_check_uncoded( "im_fastcor", in ) ||
im_check_mono( "im_fastcor", in ) ||
im_check_format( "im_fastcor", in, IM_BANDFMT_UCHAR ) ||
im_check_coding_same( "im_fastcor", in, ref ) ||
im_check_bands_same( "im_fastcor", in, ref ) ||
im_check_format_same( "im_fastcor", in, ref ) )
return( -1 );
/* Prepare the output image.
*/
if( im_cp_descv( out, in, ref, NULL ) )
return( -1 );
out->BandFmt = IM_BANDFMT_UINT;
out->Xsize = in->Xsize - ref->Xsize + 1;
out->Ysize = in->Ysize - ref->Ysize + 1;
/* FATSTRIP is good for us, as THINSTRIP will cause
* too many recalculations on overlaps.
*/
if( im_demand_hint( out, IM_FATSTRIP, in, NULL ) ||
im_generate( out,
im_start_one, fastcor_gen, im_stop_one, in, ref ) )
return( -1 );
out->Xoffset = -ref->Xsize / 2;
out->Yoffset = -ref->Ysize / 2;
return( 0 );
}
