static int
vips_unary_build( VipsObject *object )
{
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
VipsUnary *unary = VIPS_UNARY( object );
arithmetic->n = 1;
arithmetic->in = (VipsImage **) vips_object_local_array( object, 1 );
arithmetic->in[0] = unary->in;
if( arithmetic->in[0] )
g_object_ref( arithmetic->in[0] );
if( VIPS_OBJECT_CLASS( vips_unary_parent_class )->build( object ) )
return( -1 );
return( 0 );
}
static int
vips_unary_const_build( VipsObject *object )
{
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
VipsUnary *unary = (VipsUnary *) object;
VipsUnaryConst *uconst = (VipsUnaryConst *) object;
/* If we have a three-element vector we need to bandup the image to
* match.
*/
uconst->n = 1;
if( uconst->c )
uconst->n = VIPS_MAX( uconst->n, uconst->c->n );
if( unary->in )
uconst->n = VIPS_MAX( uconst->n, unary->in->Bands );
arithmetic->base_bands = uconst->n;
if( unary->in && uconst->c ) {
if( vips_check_vector( "VipsRelationalConst",
uconst->c->n, unary->in ) )
return( -1 );
}
/* Some operations need the vector in the input type (eg.
* im_equal_vec() where the output type is always uchar and is useless
* for comparisons), some need it in the output type (eg.
* im_andimage_vec() where we want to get the double to an int so we
* can do bitwise-and without having to cast for each pixel), some
* need a fixed type (eg. im_powtra_vec(), where we want to keep it as
* double).
*
* Therefore pass in the desired vector type as a param.
*/
if( uconst->c )
uconst->c_ready = make_pixel( (VipsObject *) uconst,
uconst->n, uconst->const_format,
uconst->c->n, (double *) uconst->c->data );
if( VIPS_OBJECT_CLASS( vips_unary_const_parent_class )->
build( object ) )
return( -1 );
return( 0 );
}
static int
vips_binary_build( VipsObject *object )
{
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
VipsBinary *binary = VIPS_BINARY( object );
arithmetic->n = 2;
arithmetic->in = (VipsImage **) vips_object_local_array( object, 2 );
arithmetic->in[0] = binary->left;
arithmetic->in[1] = binary->right;
if( arithmetic->in[0] )
g_object_ref( arithmetic->in[0] );
if( arithmetic->in[1] )
g_object_ref( arithmetic->in[1] );
if( VIPS_OBJECT_CLASS( vips_binary_parent_class )->build( object ) )
return( -1 );
return( 0 );
}
static int
vips_arithmetic_gen( VipsRegion *or,
void *seq, void *a, void *b, gboolean *stop )
{
VipsRegion **ir = (VipsRegion **) seq;
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( b );
VipsArithmeticClass *class = VIPS_ARITHMETIC_GET_CLASS( arithmetic );
Rect *r = &or->valid;
VipsPel *p[MAX_INPUT_IMAGES], *q;
int i, y;
/* Prepare all input regions and make buffer pointers.
*/
for( i = 0; ir[i]; i++ ) {
if( vips_region_prepare( ir[i], r ) )
return( -1 );
p[i] = (VipsPel *) VIPS_REGION_ADDR( ir[i], r->left, r->top );
}
p[i] = NULL;
q = (VipsPel *) VIPS_REGION_ADDR( or, r->left, r->top );
VIPS_GATE_START( "vips_arithmetic_gen: work" );
for( y = 0; y < r->height; y++ ) {
class->process_line( arithmetic, q, p, r->width );
for( i = 0; ir[i]; i++ )
p[i] += VIPS_REGION_LSKIP( ir[i] );
q += VIPS_REGION_LSKIP( or );
}
VIPS_GATE_STOP( "vips_arithmetic_gen: work" );
return( 0 );
}
case VIPS_FORMAT_DPCOMPLEX:
CASTC( double );
break;
default:
g_assert( 0 );
}
return( q );
}
static int
vips_unary_const_build( VipsObject *object )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
VipsUnary *unary = (VipsUnary *) object;
VipsUnaryConst *uconst = (VipsUnaryConst *) object;
/* If we have a three-element vector we need to bandup the image to
* match.
*/
uconst->n = 1;
if( uconst->c )
uconst->n = VIPS_MAX( uconst->n, uconst->c->n );
if( unary->in )
uconst->n = VIPS_MAX( uconst->n, unary->in->Bands );
arithmetic->base_bands = uconst->n;
if( unary->in && uconst->c ) {
if( vips_check_vector( class->nickname,
