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add composite2 class 

so we have a nice CLI interface to the new operator
This commit is contained in:
John Cupitt 2017-11-30 12:47:56 +00:00
parent df28948b9d
commit 14fd2af396
3 changed files with 193 additions and 48 deletions
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237
libvips/conversion/composite.cpp
View File

@ -2,6 +2,8 @@
*
* 25/9/17
* - from bandjoin.c
* 30/11/17
* - add composite2 class, to make a nice CLI interface
*/
/*
@ -91,7 +93,7 @@
* VIPS_BLEND_MODE_DIFFERENCE:
* VIPS_BLEND_MODE_EXCLUSION:
*
* The various Porter-Duff and PDF blend modes. See vips_composite(),
* The various Porter-Duff and PDF blend modes. See vips_composite_base(),
* for example.
*
* The Cairo docs have a nice explanation of all the blend modes:
@ -107,7 +109,7 @@
typedef float v4f __attribute__((vector_size(4 * sizeof(float))));
#endif /*HAVE_VECTOR_ARITH*/
typedef struct _VipsComposite {
typedef struct _VipsCompositeBase {
VipsConversion parent_instance;
/* The input images.
@ -147,20 +149,38 @@ typedef struct _VipsComposite {
v4f max_band_vec;
#endif /*HAVE_VECTOR_ARITH*/
} VipsComposite;
} VipsCompositeBase;
typedef VipsConversionClass VipsCompositeClass;
typedef VipsConversionClass VipsCompositeBaseClass;
/* We need C linkage for this.
*/
extern "C" {
G_DEFINE_TYPE( VipsComposite, vips_composite, VIPS_TYPE_CONVERSION );
G_DEFINE_ABSTRACT_TYPE( VipsCompositeBase, vips_composite_base,
VIPS_TYPE_CONVERSION );
}
static void
vips_composite_base_dispose( GObject *gobject )
{
VipsCompositeBase *composite = (VipsCompositeBase *) gobject;
if( composite->in ) {
vips_area_unref( (VipsArea *) composite->in );
composite->in = NULL;
}
if( composite->mode ) {
vips_area_unref( (VipsArea *) composite->mode );
composite->mode = NULL;
}
G_OBJECT_CLASS( vips_composite_base_parent_class )->dispose( gobject );
}
/* For each of the supported interpretations, the maximum value of each band.
*/
static int
vips_composite_max_band( VipsComposite *composite, double *max_band )
vips_composite_base_max_band( VipsCompositeBase *composite, double *max_band )
{
double max_alpha;
int b;
@ -263,7 +283,7 @@ vips_composite_max_band( VipsComposite *composite, double *max_band )
*/
template <typename T>
static void
vips_composite_blend( VipsComposite *composite,
vips_composite_base_blend( VipsCompositeBase *composite,
VipsBlendMode mode, double * restrict B, T * restrict p )
{
const int bands = composite->bands;
@ -495,7 +515,7 @@ vips_composite_blend( VipsComposite *composite,
*/
template <typename T>
static void
vips_composite_blend3( VipsComposite *composite,
vips_composite_base_blend3( VipsCompositeBase *composite,
VipsBlendMode mode, v4f &B, T * restrict p )
{
v4f A;
@ -702,7 +722,7 @@ vips_composite_blend3( VipsComposite *composite,
*/
template <typename T, gint64 min_T, gint64 max_T>
static void
vips_combine_pixels( VipsComposite *composite, VipsPel *q, VipsPel **p )
vips_combine_pixels( VipsCompositeBase *composite, VipsPel *q, VipsPel **p )
{
VipsBlendMode *m = (VipsBlendMode *) composite->mode->area.data;
int n = composite->n;
@ -724,7 +744,7 @@ vips_combine_pixels( VipsComposite *composite, VipsPel *q, VipsPel **p )
B[b] *= aB;
for( int i = 1; i < n; i++ )
vips_composite_blend<T>( composite, m[i - 1], B, tp[i] );
vips_composite_base_blend<T>( composite, m[i - 1], B, tp[i] );
/* Unpremultiply, if necessary.
*/
@ -761,7 +781,7 @@ vips_combine_pixels( VipsComposite *composite, VipsPel *q, VipsPel **p )
*/
template <typename T, gint64 min_T, gint64 max_T>
static void
vips_combine_pixels3( VipsComposite *composite, VipsPel *q, VipsPel **p )
vips_combine_pixels3( VipsCompositeBase *composite, VipsPel *q, VipsPel **p )
{
VipsBlendMode *m = (VipsBlendMode *) composite->mode->area.data;
int n = composite->n;
@ -787,7 +807,7 @@ vips_combine_pixels3( VipsComposite *composite, VipsPel *q, VipsPel **p )
}
for( int i = 1; i < n; i++ )
vips_composite_blend3<T>( composite, m[i - 1], B, tp[i] );
vips_composite_base_blend3<T>( composite, m[i - 1], B, tp[i] );
/* Unpremultiply, if necessary.
*/
@ -822,18 +842,18 @@ vips_combine_pixels3( VipsComposite *composite, VipsPel *q, VipsPel **p )
#endif /*HAVE_VECTOR_ARITH*/
static int
vips_composite_gen( VipsRegion *output_region,
vips_composite_base_gen( VipsRegion *output_region,
void *seq, void *a, void *b, gboolean *stop )
{
VipsRegion **input_regions = (VipsRegion **) seq;
VipsComposite *composite = (VipsComposite *) b;
VipsCompositeBase *composite = (VipsCompositeBase *) b;
VipsRect *r = &output_region->valid;
int ps = VIPS_IMAGE_SIZEOF_PEL( output_region->im );
if( vips_reorder_prepare_many( output_region->im, input_regions, r ) )
return( -1 );
VIPS_GATE_START( "vips_composite_gen: work" );
VIPS_GATE_START( "vips_composite_base_gen: work" );
for( int y = 0; y < r->height; y++ ) {
VipsPel *p[MAX_INPUT_IMAGES];
@ -927,17 +947,17 @@ vips_composite_gen( VipsRegion *output_region,
}
}
VIPS_GATE_STOP( "vips_composite_gen: work" );
VIPS_GATE_STOP( "vips_composite_base_gen: work" );
return( 0 );
}
static int
vips_composite_build( VipsObject *object )
vips_composite_base_build( VipsObject *object )
{
VipsObjectClass *klass = VIPS_OBJECT_GET_CLASS( object );
VipsConversion *conversion = VIPS_CONVERSION( object );
VipsComposite *composite = (VipsComposite *) object;
VipsCompositeBase *composite = (VipsCompositeBase *) object;
VipsImage **in;
VipsImage **decode;
@ -946,7 +966,8 @@ vips_composite_build( VipsObject *object )
VipsImage **size;
VipsBlendMode *mode;
if( VIPS_OBJECT_CLASS( vips_composite_parent_class )->build( object ) )
if( VIPS_OBJECT_CLASS( vips_composite_base_parent_class )->
build( object ) )
return( -1 );
composite->n = composite->in->area.n;
@ -1064,7 +1085,7 @@ vips_composite_build( VipsObject *object )
/* Set the max for each band now we know bands and compositing space.
*/
if( vips_composite_max_band( composite, composite->max_band ) ) {
if( vips_composite_base_max_band( composite, composite->max_band ) ) {
vips_error( klass->nickname,
"%s", _( "unsupported compositing space" ) );
return( -1 );
@ -1093,13 +1114,67 @@ vips_composite_build( VipsObject *object )
return( -1 );
if( vips_image_generate( conversion->out,
vips_start_many, vips_composite_gen, vips_stop_many,
vips_start_many, vips_composite_base_gen, vips_stop_many,
in, composite ) )
return( -1 );
return( 0 );
}
static void
vips_composite_base_class_init( VipsCompositeBaseClass *klass )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( klass );
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( klass );
VipsOperationClass *operation_class = VIPS_OPERATION_CLASS( klass );
VIPS_DEBUG_MSG( "vips_composite_base_class_init\n" );
gobject_class->dispose = vips_composite_base_dispose;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
vobject_class->nickname = "composite_base";
vobject_class->description = _( "blend images together" );
vobject_class->build = vips_composite_base_build;
operation_class->flags = VIPS_OPERATION_SEQUENTIAL;
VIPS_ARG_ENUM( klass, "compositing_space", 10,
_( "Compositing space" ),
_( "Composite images in this colour space" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsCompositeBase, compositing_space ),
VIPS_TYPE_INTERPRETATION, VIPS_INTERPRETATION_sRGB );
VIPS_ARG_BOOL( klass, "premultiplied", 11,
_( "Premultiplied" ),
_( "Images have premultiplied alpha" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsCompositeBase, premultiplied ),
FALSE );
}
static void
vips_composite_base_init( VipsCompositeBase *composite )
{
composite->compositing_space = VIPS_INTERPRETATION_sRGB;
}
typedef struct _VipsComposite {
VipsCompositeBase parent_instance;
} VipsComposite;
typedef VipsCompositeBaseClass VipsCompositeClass;
/* We need C linkage for this.
*/
extern "C" {
G_DEFINE_TYPE( VipsComposite, vips_composite, vips_composite_base_get_type() );
}
static void
vips_composite_class_init( VipsCompositeClass *klass )
{
@ -1115,7 +1190,7 @@ vips_composite_class_init( VipsCompositeClass *klass )
vobject_class->nickname = "composite";
vobject_class->description =
_( "blend an array of images with an array of blend modes" );
vobject_class->build = vips_composite_build;
vobject_class->build = vips_composite_base_build;
operation_class->flags = VIPS_OPERATION_SEQUENTIAL;
@ -1123,36 +1198,21 @@ vips_composite_class_init( VipsCompositeClass *klass )
_( "Inputs" ),
_( "Array of input images" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsComposite, in ),
G_STRUCT_OFFSET( VipsCompositeBase, in ),
VIPS_TYPE_ARRAY_IMAGE );
VIPS_ARG_BOXED( klass, "mode", 3,
_( "Blend modes" ),
_( "Array of VipsBlendMode to join with" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsComposite, mode ),
G_STRUCT_OFFSET( VipsCompositeBase, mode ),
VIPS_TYPE_ARRAY_INT );
VIPS_ARG_ENUM( klass, "compositing_space", 10,
_( "Compositing space" ),
_( "Composite images in this colour space" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsComposite, compositing_space ),
VIPS_TYPE_INTERPRETATION, VIPS_INTERPRETATION_sRGB );
VIPS_ARG_BOOL( klass, "premultiplied", 11,
_( "Premultiplied" ),
_( "Images have premultiplied alpha" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsComposite, premultiplied ),
FALSE );
}
static void
vips_composite_init( VipsComposite *composite )
{
composite->compositing_space = VIPS_INTERPRETATION_sRGB;
}
static int
@ -1232,6 +1292,94 @@ vips_composite( VipsImage **in, VipsImage **out, int n, int *mode, ... )
return( result );
}
typedef struct _VipsComposite2 {
VipsCompositeBase parent_instance;
VipsImage *base;
VipsImage *overlay;
VipsBlendMode mode;
} VipsComposite2;
typedef VipsCompositeBaseClass VipsComposite2Class;
/* We need C linkage for this.
*/
extern "C" {
G_DEFINE_TYPE( VipsComposite2, vips_composite2, vips_composite_base_get_type() );
}
static int
vips_composite2_build( VipsObject *object )
{
VipsCompositeBase *base = (VipsCompositeBase *) object;
VipsComposite2 *composite2 = (VipsComposite2 *) object;
if( composite2->overlay &&
composite2->base ) {
VipsImage *in[3];
int mode[1];
in[0] = composite2->base;
in[1] = composite2->overlay;
in[2] = NULL;
base->in = vips_array_image_new( in, 2 );
mode[0] = (int) composite2->mode;
base->mode = vips_array_int_new( mode, 1 );
}
if( VIPS_OBJECT_CLASS( vips_composite2_parent_class )->build( object ) )
return( -1 );
return( 0 );
}
static void
vips_composite2_class_init( VipsCompositeClass *klass )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( klass );
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( klass );
VipsOperationClass *operation_class = VIPS_OPERATION_CLASS( klass );
VIPS_DEBUG_MSG( "vips_composite_class_init\n" );
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
vobject_class->nickname = "composite2";
vobject_class->description =
_( "blend a pair of images with a blend mode" );
vobject_class->build = vips_composite2_build;
operation_class->flags = VIPS_OPERATION_SEQUENTIAL;
VIPS_ARG_IMAGE( klass, "base", 0,
_( "Base" ),
_( "Base image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsComposite2, base ) );
VIPS_ARG_IMAGE( klass, "overlay", 1,
_( "Overlay" ),
_( "Overlay image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsComposite2, overlay ) );
VIPS_ARG_ENUM( klass, "mode", 3,
_( "Blend mode" ),
_( "VipsBlendMode to join with" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsComposite2, mode ),
VIPS_TYPE_BLEND_MODE, VIPS_BLEND_MODE_OVER );
}
static void
vips_composite2_init( VipsComposite2 *composite2 )
{
}
/**
* vips_composite2: (method)
* @base: first input image
@ -1240,7 +1388,7 @@ vips_composite( VipsImage **in, VipsImage **out, int n, int *mode, ... )
* @mode: composite with this blend mode
* @...: %NULL-terminated list of optional named arguments
*
* Composite @overlay on top of @base with @mode. See vips_composite().
* Composite @overlay on top of @base with @mode. See vips_composite_base().
*
* Returns: 0 on success, -1 on error
*/
@ -1250,16 +1398,11 @@ vips_composite2( VipsImage *base, VipsImage *overlay, VipsImage **out,
{
va_list ap;
int result;
VipsImage *imagev[2];
int modev[1];
imagev[0] = base;
imagev[1] = overlay;
modev[0] = mode;
va_start( ap, mode );
result = vips_compositev( imagev, out, 2, modev, ap );
result = vips_call_split( "composite2", ap, base, overlay, out, mode );
va_end( ap );
return( result );
}

2
libvips/conversion/conversion.c
View File

@ -291,6 +291,7 @@ vips_conversion_operation_init( void )
extern GType vips_falsecolour_get_type( void );
extern GType vips_gamma_get_type( void );
extern GType vips_composite_get_type( void );
extern GType vips_composite2_get_type( void );
vips_copy_get_type();
vips_tile_cache_get_type();
@ -340,4 +341,5 @@ vips_conversion_operation_init( void )
vips_falsecolour_get_type();
vips_gamma_get_type();
vips_composite_get_type();
vips_composite2_get_type();
}

2
libvips/include/vips/conversion.h
View File

@ -269,7 +269,7 @@ int vips_unpremultiply( VipsImage *in, VipsImage **out, ... )
__attribute__((sentinel));
int vips_composite( VipsImage **in, VipsImage **out, int n, int *mode, ... )
__attribute__((sentinel));
int vips_composite2( VipsImage *in1, VipsImage *in2, VipsImage **out,
int vips_composite2( VipsImage *base, VipsImage *overlay, VipsImage **out,
VipsBlendMode mode1, ... )
__attribute__((sentinel));