static int
vips_ifthenelse_build( VipsObject *object )
{
VipsConversion *conversion = VIPS_CONVERSION( object );
VipsIfthenelse *ifthenelse = (VipsIfthenelse *) object;
VipsImage *all[3];
VipsImage **band = (VipsImage **) vips_object_local_array( object, 3 );
VipsImage **size = (VipsImage **) vips_object_local_array( object, 3 );
VipsImage **format =
(VipsImage **) vips_object_local_array( object, 3 );
if( VIPS_OBJECT_CLASS( vips_ifthenelse_parent_class )->build( object ) )
return( -1 );
/* We have to have the condition image last since we want the output
* image to inherit its properties from the then/else parts.
*/
all[0] = ifthenelse->in1;
all[1] = ifthenelse->in2;
all[2] = ifthenelse->cond;
/* No need to check input images, sizealike and friends will do this
* for us.
*/
/* Cast our input images up to a common bands and size.
*/
if( vips__bandalike_vec( "VipsIfthenelse", all, band, 3, 0 ) ||
vips__sizealike_vec( band, size, 3 ) )
return( -1 );
/* Condition is cast to uchar, then/else to a common type.
*/
if( vips_cast( size[2], &format[2], VIPS_FORMAT_UCHAR, NULL ) )
return( -1 );
if( vips__formatalike_vec( size, format, 2 ) )
return( -1 );
if( vips_image_copy_fields_array( conversion->out, format ) )
return( -1 );
vips_demand_hint_array( conversion->out,
VIPS_DEMAND_STYLE_SMALLTILE, format );
if( vips_image_generate( conversion->out,
vips_start_many, vips_ifthenelse_gen, vips_stop_many,
format, ifthenelse ) )
return( -1 );
return( 0 );
}
int
vips__bandalike( const char *domain,
VipsImage *in1, VipsImage *in2, VipsImage **out1, VipsImage **out2 )
{
VipsImage *in[2];
VipsImage *out[2];
in[0] = in1;
in[1] = in2;
if( vips__bandalike_vec( domain, in, out, 2, 1 ) )
return( -1 );
*out1 = out[0];
*out2 = out[1];
return( 0 );
}
