309 lines
8.8 KiB
C
309 lines
8.8 KiB
C
/* base class for all conversion operations
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*
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* properties:
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* - single output image
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*/
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/*
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Copyright (C) 1991-2005 The National Gallery
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/*
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#define DEBUG
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#include "pconversion.h"
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/**
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* SECTION: conversion
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* @short_description: convert images in some way: change band format, change header, insert, extract, join
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* @see_also: <link linkend="libvips-resample">resample</link>
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* @stability: Stable
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* @include: vips/vips.h
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*
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* These operations convert an image in some way. They can be split into a two
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* main groups.
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*
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* The first set of operations change an image's format in some way. You
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* can change the band format (for example, cast to 32-bit unsigned
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* int), form complex images from real images, convert images to
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* matrices and back, change header fields, and a few others.
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*
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* The second group move pixels about in some way. You can flip, rotate,
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* extract, insert and join pairs of images in various ways.
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*
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*/
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/**
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* VipsAlign:
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* @VIPS_ALIGN_LOW: align low coordinate edge
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* @VIPS_ALIGN_CENTRE: align centre
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* @VIPS_ALIGN_HIGH: align high coordinate edge
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*
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* See vips_join() and so on.
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*
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* Operations like vips_join() need to be told whether to align images on the
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* low or high coordinate edge, or centre.
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*
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* See also: vips_join().
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*/
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/**
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* VipsAngle:
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* @VIPS_ANGLE_D0: no rotate
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* @VIPS_ANGLE_D90: 90 degrees clockwise
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* @VIPS_ANGLE_D180: 180 degree rotate
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* @VIPS_ANGLE_D270: 90 degrees anti-clockwise
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*
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* See vips_rot() and so on.
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*
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* Fixed rotate angles.
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*
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* See also: vips_rot().
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*/
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/**
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* VipsAngle45:
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* @VIPS_ANGLE45_D0: no rotate
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* @VIPS_ANGLE45_D45: 45 degrees clockwise
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* @VIPS_ANGLE45_D90: 90 degrees clockwise
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* @VIPS_ANGLE45_D135: 135 degrees clockwise
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* @VIPS_ANGLE45_D180: 180 degrees
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* @VIPS_ANGLE45_D225: 135 degrees anti-clockwise
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* @VIPS_ANGLE45_D270: 90 degrees anti-clockwise
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* @VIPS_ANGLE45_D315: 45 degrees anti-clockwise
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*
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* See vips_rot45() and so on.
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*
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* Fixed rotate angles.
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*
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* See also: vips_rot45().
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*/
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/**
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* VipsExtend:
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* @VIPS_EXTEND_BLACK: extend with black (all 0) pixels
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* @VIPS_EXTEND_COPY: copy the image edges
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* @VIPS_EXTEND_REPEAT: repeat the whole image
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* @VIPS_EXTEND_MIRROR: mirror the whole image
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* @VIPS_EXTEND_WHITE: extend with white (all bits set) pixels
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* @VIPS_EXTEND_BACKGROUND: extend with colour from the @background property
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*
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* See vips_embed(), vips_conv(), vips_affine() and so on.
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*
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* When the edges of an image are extended, you can specify
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* how you want the extension done.
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*
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* #VIPS_EXTEND_BLACK --- new pixels are black, ie. all bits are zero.
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*
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* #VIPS_EXTEND_COPY --- each new pixel takes the value of the nearest edge
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* pixel
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*
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* #VIPS_EXTEND_REPEAT --- the image is tiled to fill the new area
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*
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* #VIPS_EXTEND_MIRROR --- the image is reflected and tiled to reduce hash
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* edges
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*
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* #VIPS_EXTEND_WHITE --- new pixels are white, ie. all bits are set
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*
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* #VIPS_EXTEND_BACKGROUND --- colour set from the @background property
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*
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* We have to specify the exact value of each enum member since we have to
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* keep these frozen for back compat with vips7.
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*
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* See also: vips_embed().
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*/
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/**
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* VipsDirection:
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* @VIPS_DIRECTION_HORIZONTAL: left-right
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* @VIPS_DIRECTION_VERTICAL: top-bottom
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*
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* See vips_flip(), vips_join() and so on.
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*
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* Operations like vips_flip() need to be told whether to flip left-right or
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* top-bottom.
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*
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* See also: vips_flip(), vips_join().
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*/
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G_DEFINE_ABSTRACT_TYPE( VipsConversion, vips_conversion, VIPS_TYPE_OPERATION );
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static int
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vips_conversion_build( VipsObject *object )
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{
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VipsConversion *conversion = VIPS_CONVERSION( object );
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#ifdef DEBUG
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printf( "vips_conversion_build: " );
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vips_object_print_name( object );
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printf( "\n" );
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#endif /*DEBUG*/
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g_object_set( conversion, "out", vips_image_new(), NULL );
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if( VIPS_OBJECT_CLASS( vips_conversion_parent_class )->build( object ) )
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return( -1 );
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return( 0 );
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}
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static void
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vips_conversion_class_init( VipsConversionClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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vobject_class->nickname = "conversion";
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vobject_class->description = _( "conversion operations" );
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vobject_class->build = vips_conversion_build;
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VIPS_ARG_IMAGE( class, "out", 1,
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_( "Output" ),
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_( "Output image" ),
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VIPS_ARGUMENT_REQUIRED_OUTPUT,
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G_STRUCT_OFFSET( VipsConversion, out ) );
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}
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static void
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vips_conversion_init( VipsConversion *conversion )
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{
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}
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/* Called from iofuncs to init all operations in this dir. Use a plugin system
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* instead?
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*/
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void
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vips_conversion_operation_init( void )
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{
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extern GType vips_copy_get_type( void );
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extern GType vips_tile_cache_get_type( void );
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extern GType vips_line_cache_get_type( void );
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extern GType vips_sequential_get_type( void );
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extern GType vips_cache_get_type( void );
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extern GType vips_embed_get_type( void );
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extern GType vips_flip_get_type( void );
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extern GType vips_insert_get_type( void );
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extern GType vips_join_get_type( void );
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extern GType vips_arrayjoin_get_type( void );
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extern GType vips_extract_area_get_type( void );
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extern GType vips_crop_get_type( void );
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extern GType vips_extract_band_get_type( void );
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extern GType vips_replicate_get_type( void );
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extern GType vips_cast_get_type( void );
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extern GType vips_bandjoin_get_type( void );
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extern GType vips_bandjoin_const_get_type( void );
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extern GType vips_bandrank_get_type( void );
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extern GType vips_black_get_type( void );
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extern GType vips_rot_get_type( void );
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extern GType vips_rot45_get_type( void );
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extern GType vips_autorot_get_type( void );
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extern GType vips_ifthenelse_get_type( void );
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extern GType vips_recomb_get_type( void );
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extern GType vips_bandmean_get_type( void );
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extern GType vips_bandfold_get_type( void );
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extern GType vips_bandunfold_get_type( void );
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extern GType vips_flatten_get_type( void );
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extern GType vips_premultiply_get_type( void );
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extern GType vips_unpremultiply_get_type( void );
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extern GType vips_bandbool_get_type( void );
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extern GType vips_gaussnoise_get_type( void );
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extern GType vips_grid_get_type( void );
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extern GType vips_scale_get_type( void );
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extern GType vips_wrap_get_type( void );
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extern GType vips_zoom_get_type( void );
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extern GType vips_subsample_get_type( void );
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extern GType vips_msb_get_type( void );
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extern GType vips_byteswap_get_type( void );
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#ifdef HAVE_PANGOFT2
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extern GType vips_text_get_type( void );
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#endif /*HAVE_PANGOFT2*/
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extern GType vips_xyz_get_type( void );
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extern GType vips_falsecolour_get_type( void );
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extern GType vips_gamma_get_type( void );
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vips_copy_get_type();
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vips_tile_cache_get_type();
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vips_line_cache_get_type();
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vips_sequential_get_type();
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vips_cache_get_type();
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vips_embed_get_type();
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vips_flip_get_type();
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vips_insert_get_type();
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vips_join_get_type();
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vips_arrayjoin_get_type();
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vips_extract_area_get_type();
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vips_crop_get_type();
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vips_extract_band_get_type();
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vips_replicate_get_type();
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vips_cast_get_type();
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vips_bandjoin_get_type();
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vips_bandjoin_const_get_type();
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vips_bandrank_get_type();
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vips_black_get_type();
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vips_rot_get_type();
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vips_rot45_get_type();
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vips_autorot_get_type();
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vips_ifthenelse_get_type();
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vips_recomb_get_type();
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vips_bandmean_get_type();
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vips_bandfold_get_type();
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vips_bandunfold_get_type();
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vips_flatten_get_type();
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vips_premultiply_get_type();
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vips_unpremultiply_get_type();
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vips_bandbool_get_type();
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vips_gaussnoise_get_type();
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vips_grid_get_type();
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vips_scale_get_type();
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vips_wrap_get_type();
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vips_zoom_get_type();
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vips_subsample_get_type();
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vips_msb_get_type();
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vips_byteswap_get_type();
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#ifdef HAVE_PANGOFT2
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vips_text_get_type();
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#endif /*HAVE_PANGOFT2*/
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vips_xyz_get_type();
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vips_falsecolour_get_type();
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vips_gamma_get_type();
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}
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