libvips/include/vips/VImage.h

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// VIPS image wrapper
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef IM_VIMAGE_H
#define IM_VIMAGE_H
/* SWIG includes this file directly rather than going through vipscpp.h ... so
* we have to define these macros here as well.
*/
#ifdef SWIG
# define VIPS_NAMESPACE_START namespace vips {
# define VIPS_NAMESPACE_END }
#endif /*SWIG*/
/* Don't include these when parsing for SWIG.
*/
#ifndef SWIG
# include <list>
# include <complex>
# include <vector>
#endif /*!SWIG*/
/* Wrap pointers to these, but we don't want to import all the old C API. Just
* declare them.
*/
extern "C" {
struct im__IMAGE;
/* Needed by Vargv, see below.
*/
struct im__function;
typedef void *im__object;
}
VIPS_NAMESPACE_START
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/* A VIPS callback, our name for im_callback_fn.
*/
typedef int (*VCallback)( void *, void * );
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/* VIPS image class.
*
* Slightly tricky: we have two sorts of sharing. Several VImage can share one
* refblock (while results are being returned from functions, for example),
* and several other refblocks can have IMAGEs which depend upon this IMAGE
* for their result.
*/
class VImage {
/* We'd like this to be protected so that user subclasses can define
* their own member wrappers. But sadly C++ doesn't work like that:
* subclasses of VImage can only refer to protected members via
* this->, which isn't what we need. Just make it public and hope no
* one touches it.
*/
public:
/* Doesn't need to be wrapped.
*/
#ifndef SWIG
// Count ref etc. in one of these. One for each open VIPS image.
struct refblock {
im__IMAGE *im; // IMAGE pointer
int close_on_delete; // Set if we must im_close()
int nrefs; // Number of refs to us
std::list<refblock*> orefs; // Refs im makes
// Construct/destruct
refblock();
virtual ~refblock() throw( VError );
// Add a ref - this (output image) depends upon IMAGE in
void addref( refblock *in ) throw( VError );
// Remove a ref
void removeref() throw( VError );
// Debugging
void debug_print();
// Linked list needs "==" -- use address equivalence
friend int operator==( const refblock &left,
const refblock &right ) { return( &left == &right ); }
};
refblock *_ref;
#endif /*!SWIG*/
public:
#ifdef DEBUG
/* All the refblocks in the world.
*/
static std::list<refblock*> all_refblock;
#endif /*DEBUG*/
/* Print all refblocks ... debugging. Compile with DEBUG to enable
* this.
*/
static void print_all();
/* Typedefs and enums we need.
*/
// Type type
enum TType {
MULTIBAND = 0,
B_W = 1,
LUMINACE = 2,
XRAY = 3,
IR = 4,
YUV = 5,
RED_ONLY = 6,
GREEN_ONLY = 7,
BLUE_ONLY = 8,
POWER_SPECTRUM = 9,
HISTOGRAM = 10,
LUT = 11,
XYZ = 12,
LAB = 13,
CMC = 14,
CMYK = 15,
LABQ = 16,
RGB = 17,
UCS = 18,
LCH = 19,
LABS = 21,
sRGB = 22,
YXY = 23,
FOURIER = 24,
RGB16 = 25,
GREY16 = 26
};
// Format type
enum TBandFmt {
FMTNOTSET = -1,
FMTUCHAR = 0,
FMTCHAR = 1,
FMTUSHORT = 2,
FMTSHORT = 3,
FMTUINT = 4,
FMTINT = 5,
FMTFLOAT = 6,
FMTCOMPLEX = 7,
FMTDOUBLE = 8,
FMTDPCOMPLEX = 9
};
// Coding type
enum TCoding {
NOCODING = 0,
COLQUANT = 1,
LABPACK = 2,
LABPACK_COMPRESSED = 3,
RGB_COMPRESSED = 4,
LUM_COMPRESSED = 5
};
// Compression type
enum TCompression {
NO_COMPRESSION = 0,
TCSF_COMPRESSION = 1,
JPEG_COMPRESSION = 2
};
/* Start of wrappers for iofuncs.
*/
// Plain constructors
VImage( const char *name, const char *mode = "r" ) throw( VError );
VImage( void *data, int width, int height,
int bands, TBandFmt format ) throw( VError );
VImage( im__IMAGE *image );
VImage() throw( VError );
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// Convert to a disc file, eg:
// VImage fred = VImage::convert2disc( "im_jpeg2vips",
// "file.jpg", "temp.v" );
// Runs im_jpeg2vips to the temp file, then opens that and returns
// it. Useful for opening very large files without using a lot of RAM.
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// Now superceeded by the format API, though that's not yet wrapped in
// C++
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static VImage convert2disc( const char* convert,
const char* in, const char* disc ) throw( VError );
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// Copy constructor
VImage( const VImage &a );
// Assignment - delete old ref
VImage &operator=( const VImage &a ) throw( VError );
// Destructor
virtual ~VImage() throw( VError ) { _ref->removeref(); }
// Extract underlying IMAGE* pointer
im__IMAGE *image() const { return( _ref->im ); }
// Extract underlying data pointer
void *data() const throw( VError );
// Write this to another VImage, to a file, or to a mem buffer
VImage write( VImage out ) throw( VError );
VImage write( const char *name ) throw( VError );
VImage write() throw( VError );
// Debugging ... print header fields
void debug_print();
// Projection functions to get header fields
int Xsize();
int Ysize();
int Bands();
TBandFmt BandFmt();
TCoding Coding();
TType Type();
float Xres();
float Yres();
int Length();
TCompression Compression();
short Level();
int Xoffset();
int Yoffset();
// Derived fields
const char *filename();
const char *Hist();
// metadata
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#ifndef SWIG
// base functionality
// we don't wrap GValue, so we can't wrap these for now
void meta_set( const char *field, GValue *value ) throw( VError );
void meta_get( const char *field, GValue *value_copy ) throw( VError );
GType meta_get_type( const char *field ) throw( VError );
#endif /*SWIG*/
// convenience functions
int meta_get_int( const char *field ) throw( VError );
double meta_get_double( const char *field ) throw( VError );
const char *meta_get_string( const char *field ) throw( VError );
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void *meta_get_area( const char *field ) throw( VError );
void *meta_get_blob( const char *field, size_t *length )
throw( VError );
void meta_set( const char *field, int value ) throw( VError );
void meta_set( const char *field, double value ) throw( VError );
void meta_set( const char *field, const char *value ) throw( VError );
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#ifndef SWIG
// we don't wrap callbacks yet, so we can't wrap these for now
void meta_set( const char *field,
VCallback free_fn, void *value )
throw( VError );
void meta_set( const char *field,
VCallback free_fn, void *value, size_t length )
throw( VError );
#endif /*SWIG*/
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// Set header fields
void initdesc( int, int, int, TBandFmt, TCoding, TType,
float = 1.0, float = 1.0, int = 0, int = 0 ) throw( VError );
/* Insert automatically generated headers.
*/
#include "vipsc++.h"
/* No point getting SWIG to wrap these ... we do this by hand later so we can
* handle things like "a + 12" correctly.
*/
#ifndef SWIG
// And some in-line operator equivalences done by hand
friend VImage operator+( VImage a, VImage b ) throw( VError )
{ return( a.add( b ) ); }
friend VImage operator+( double a, VImage b ) throw( VError )
{ return( b.lin( 1.0, a ) ); }
friend VImage operator+( VImage a, double b ) throw( VError )
{ return( a.lin( 1.0, b ) ); }
friend VImage operator-( VImage a, VImage b ) throw( VError )
{ return( a.subtract( b ) ); }
friend VImage operator-( double a, VImage b ) throw( VError )
{ return( b.lin( -1.0, a ) ); }
friend VImage operator-( VImage a, double b ) throw( VError )
{ return( a.lin( 1.0, -b ) ); }
friend VImage operator*( VImage a, VImage b ) throw( VError )
{ return( a.multiply( b ) ); }
friend VImage operator*( double a, VImage b ) throw( VError )
{ return( b.lin( a, 0.0 ) ); }
friend VImage operator*( VImage a, double b ) throw( VError )
{ return( a.lin( b, 0.0 ) ); }
friend VImage operator/( VImage a, VImage b ) throw( VError )
{ return( a.divide( b ) ); }
friend VImage operator/( double a, VImage b ) throw( VError )
{ return( b.pow( -1.0 ).lin( a, 0.0 ) ); }
friend VImage operator/( VImage a, double b ) throw( VError )
{ return( a.lin( 1.0/b, 0.0 ) ); }
friend VImage operator%( VImage a, VImage b ) throw( VError )
{ return( a.remainder( b ) ); }
friend VImage operator%( VImage a, double b ) throw( VError )
{ return( a.remainder( b ) ); }
friend VImage operator<( VImage a, VImage b ) throw( VError )
{ return( a.less( b ) ); }
friend VImage operator<( double a, VImage b ) throw( VError )
{ return( b.more( a ) ); }
friend VImage operator<( VImage a, double b ) throw( VError )
{ return( a.less( b ) ); }
friend VImage operator<=( VImage a, VImage b ) throw( VError )
{ return( a.lesseq( b ) ); }
friend VImage operator<=( double a, VImage b ) throw( VError )
{ return( b.moreeq( a ) ); }
friend VImage operator<=( VImage a, double b ) throw( VError )
{ return( a.lesseq( b ) ); }
friend VImage operator>( VImage a, VImage b ) throw( VError )
{ return( a.more( b ) ); }
friend VImage operator>( double a, VImage b ) throw( VError )
{ return( b.less( a ) ); }
friend VImage operator>( VImage a, double b ) throw( VError )
{ return( a.more( b ) ); }
friend VImage operator>=( VImage a, VImage b ) throw( VError )
{ return( a.moreeq( b ) ); }
friend VImage operator>=( double a, VImage b ) throw( VError )
{ return( b.lesseq( a ) ); }
friend VImage operator>=( VImage a, double b ) throw( VError )
{ return( a.moreeq( b ) ); }
friend VImage operator==( VImage a, VImage b ) throw( VError )
{ return( a.equal( b ) ); }
friend VImage operator==( double a, VImage b ) throw( VError )
{ return( b.equal( a ) ); }
friend VImage operator==( VImage a, double b ) throw( VError )
{ return( a.equal( b ) ); }
friend VImage operator!=( VImage a, VImage b ) throw( VError )
{ return( a.notequal( b ) ); }
friend VImage operator!=( double a, VImage b ) throw( VError )
{ return( b.notequal( a ) ); }
friend VImage operator!=( VImage a, double b ) throw( VError )
{ return( a.notequal( b ) ); }
friend VImage operator&( VImage a, VImage b ) throw( VError )
{ return( a.andimage( b ) ); }
friend VImage operator&( int a, VImage b ) throw( VError )
{ return( b.andimage( a ) ); }
friend VImage operator&( VImage a, int b ) throw( VError )
{ return( a.andimage( b ) ); }
friend VImage operator|( VImage a, VImage b ) throw( VError )
{ return( a.orimage( b ) ); }
friend VImage operator|( int a, VImage b ) throw( VError )
{ return( b.orimage( a ) ); }
friend VImage operator|( VImage a, int b ) throw( VError )
{ return( a.orimage( b ) ); }
friend VImage operator^( VImage a, VImage b ) throw( VError )
{ return( a.eorimage( b ) ); }
friend VImage operator^( int a, VImage b ) throw( VError )
{ return( b.eorimage( a ) ); }
friend VImage operator^( VImage a, int b ) throw( VError )
{ return( a.eorimage( b ) ); }
friend VImage operator<<( VImage a, int b ) throw( VError )
{ return( a.shiftleft( b ) ); }
friend VImage operator>>( VImage a, int b ) throw( VError )
{ return( a.shiftright( b ) ); }
friend VImage operator-( VImage a ) throw( VError )
{ return( a * -1 ); }
// Type conversion: VImage to VDMask and VIMask
operator VDMask() throw( VError )
{ return( this->vips2mask() ); }
operator VIMask() throw( VError )
{ return( VIMask( VDMask( *this ) ) ); }
#endif /*!SWIG*/
};
/* Don't include these when parsing for SWIG.
*/
#ifndef SWIG
/* Class wrapping up a vargv. Member function wrappers need this. It needs to
* be part of the public API in case people subclass VImage and add their own
* members.
*/
class Vargv {
// Function we are args to
im__function *fn;
// Base of object vector
im__object *base;
public:
Vargv( const char *name );
~Vargv();
// Reference to element of base
im__object &data( int i = 0 ) { return( base[i] ); };
// Invoke function
void call();
};
#endif /*!SWIG*/
VIPS_NAMESPACE_END
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// Other VIPS protos we need
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extern "C" {
extern int im_init_world( const char *argv0 );
extern void im__print_all();
extern void im_col_Lab2XYZ(
float, float, float,
float *, float *, float * );
}
#endif /*IM_VIMAGE_H*/