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im_dlip*() redone as a class 

VipsFlip replaces  im_fliphor() and im_flipver().
This commit is contained in:
John Cupitt 2011-10-17 07:15:51 +01:00
parent 62baa5dfbc
commit ac377c143b
13 changed files with 372 additions and 277 deletions
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6
ChangeLog
View File

@ -1,7 +1,7 @@
20/8/11 started 7.27.0
- version bump for new dev cycle
- im_subtract(), im_avg(), im_min(), im_minpos(), im_copy(), im_embed()
redone as classes
- im_subtract(), im_avg(), im_min(), im_minpos(), im_copy(), im_embed(),
im_flophor(), im_flipver() redone as classes
- added VIPS_ARGUMENT_APPEND to help control arg ordering
- generate has a 'stop' param to signal successful early termination
- added optional output args, eg. x/y for min
@ -25,7 +25,7 @@
- handle offset correctly in separable convolutions (thanks Nicolas)
- macros for class arg boilerplate
- class arg order set by new 'priority' param
- VipsExtend enum added
- VipsExtend, VipsDirection enums added
12/9/11 started 7.26.4
- fallback vips_init()

7
TODO
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@ -11,6 +11,13 @@
no output arg?
- try
$ vips im_fliphor firegirl.jpg x.v
lots of errors

3
libvips/conversion/Makefile.am
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@ -5,6 +5,7 @@ libconversion_la_SOURCES = \
conversion.h \
copy.c \
embed.c \
flip.c \
conver_dispatch.c \
im_black.c \
im_c2amph.c \
@ -15,8 +16,6 @@ libconversion_la_SOURCES = \
im_copy_file.c \
im_extract.c \
im_falsecolour.c \
im_fliphor.c \
im_flipver.c \
im_gbandjoin.c \
im_insert.c \
im_lrjoin.c \

2
libvips/conversion/conversion.c
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@ -104,8 +104,10 @@ vips_conversion_operation_init( void )
{
extern GType vips_copy_get_type( void );
extern GType vips_embed_get_type( void );
extern GType vips_flip_get_type( void );
vips_copy_get_type();
vips_embed_get_type();
vips_flip_get_type();
}

2
libvips/conversion/embed.c
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@ -52,8 +52,8 @@
*/
/*
*/
#define VIPS_DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>

283
libvips/conversion/flip.c Normal file
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@ -0,0 +1,283 @@
/* im_fliphor
*
* Copyright: 1990, N. Dessipris
* Written on: 28/10/91
* Updated on:
* 19/7/93 JC
* - now allows IM_CODING_LABQ too
* - yuk! needs rewriting
* 21/12/94 JC
* - rewritten
* 14/4/04
* - sets Xoffset / Yoffset
* 24/3/09
* - added IM_CODING_RAD support
* 29/1/10
* - cleanups
* - gtkdoc
* 17/10/11
* - redone as a class
*/
/*
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
*/
/*
#define VIPS_DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/debug.h>
#include "conversion.h"
/**
* VipsFlip:
* @in: input image
* @out: output image
* @direction: flip horizontally or vertically
*
* Flips an image left-right or up-down.
*
* See also: im_rot90().
*
* Returns: 0 on success, -1 on error
*/
typedef struct _VipsFlip {
VipsConversion parent_instance;
/* The input image.
*/
VipsImage *input;
/* Swap bytes on the way through.
*/
VipsDirection direction;
} VipsFlip;
typedef VipsConversionClass VipsFlipClass;
G_DEFINE_TYPE( VipsFlip, vips_flip, VIPS_TYPE_CONVERSION );
static int
vips_flip_vertical_gen( VipsRegion *or, void *seq, void *a, void *b,
gboolean *stop )
{
VipsRegion *ir = (VipsRegion *) seq;
VipsRect *r = &or->valid;
VipsRect in;
PEL *p, *q;
int y;
int le = r->left;
int to = r->top;
int bo = VIPS_RECT_BOTTOM( r );
int ls;
int psk, qsk;
/* Transform to input coordinates.
*/
in = *r;
in.top = ir->im->Ysize - bo;
/* Ask for input we need.
*/
if( vips_region_prepare( ir, &in ) )
return( -1 );
/* Loop, copying and reversing lines.
*/
p = (PEL *) VIPS_REGION_ADDR( ir, le, in.top + in.height - 1 );
q = (PEL *) VIPS_REGION_ADDR( or, le, to );
psk = VIPS_REGION_LSKIP( ir );
qsk = VIPS_REGION_LSKIP( or );
ls = VIPS_REGION_SIZEOF_LINE( or );
for( y = to; y < bo; y++ ) {
memcpy( q, p, ls );
p -= psk;
q += qsk;
}
return( 0 );
}
static int
vips_flip_horizontal_gen( VipsRegion *or, void *seq, void *a, void *b,
gboolean *stop )
{
VipsRegion *ir = (VipsRegion *) seq;
VipsRect *r = &or->valid;
VipsRect in;
char *p, *q;
int x, y, z;
int le = r->left;
int ri = VIPS_RECT_RIGHT(r);
int to = r->top;
int bo = VIPS_RECT_BOTTOM(r);
int ps = VIPS_IMAGE_SIZEOF_PEL( ir->im ); /* sizeof pel */
int hgt = ir->im->Xsize - r->width;
int lastx;
/* Transform to input coordinates.
*/
in = *r;
in.left = hgt - r->left;
/* Find x of final pixel in input area.
*/
lastx = VIPS_RECT_RIGHT( &in ) - 1;
/* Ask for input we need.
*/
if( vips_region_prepare( ir, &in ) )
return( -1 );
/* Loop, copying and reversing lines.
*/
for( y = to; y < bo; y++ ) {
p = VIPS_REGION_ADDR( ir, lastx, y );
q = VIPS_REGION_ADDR( or, le, y );
for( x = le; x < ri; x++ ) {
/* Copy the pel.
*/
for( z = 0; z < ps; z++ )
q[z] = p[z];
/* Skip forwards in out, back in in.
*/
q += ps;
p -= ps;
}
}
return( 0 );
}
static int
vips_flip_build( VipsObject *object )
{
VipsConversion *conversion = VIPS_CONVERSION( object );
VipsFlip *flip = (VipsFlip *) object;
VipsGenerateFn generate_fn;
if( VIPS_OBJECT_CLASS( vips_flip_parent_class )->build( object ) )
return( -1 );
if( vips_image_pio_input( flip->input ) ||
vips_image_pio_output( conversion->output ) )
return( -1 );
if( vips_image_copy_fields( conversion->output, flip->input ) )
return( -1 );
vips_demand_hint( conversion->output,
VIPS_DEMAND_STYLE_THINSTRIP, flip->input, NULL );
if( flip->direction == VIPS_DIRECTION_HORIZONTAL ) {
generate_fn = vips_flip_horizontal_gen;
conversion->output->Xoffset = flip->input->Xsize;
conversion->output->Yoffset = 0;
}
else {
generate_fn = vips_flip_vertical_gen;
conversion->output->Xoffset = 0;
conversion->output->Yoffset = flip->input->Ysize;
}
if( vips_image_generate( conversion->output,
vips_start_one, generate_fn, vips_stop_one,
flip->input, flip ) )
return( -1 );
return( 0 );
}
static void
vips_flip_class_init( VipsFlipClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
VIPS_DEBUG_MSG( "vips_flip_class_init\n" );
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
vobject_class->nickname = "flip";
vobject_class->description = _( "flip an image" );
vobject_class->build = vips_flip_build;
VIPS_ARG_IMAGE( class, "in", 1,
_( "Input" ),
_( "Input image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsFlip, input ) );
VIPS_ARG_ENUM( class, "direction", 6,
_( "Direction" ),
_( "Direction to flip image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsFlip, direction ),
VIPS_TYPE_DIRECTION, VIPS_DIRECTION_HORIZONTAL );
}
static void
vips_flip_init( VipsFlip *flip )
{
}
int
vips_flip( VipsImage *in, VipsImage **out, VipsDirection direction, ... )
{
va_list ap;
int result;
va_start( ap, direction );
result = vips_call_split( "flip", ap, in, out, direction );
va_end( ap );
return( result );
}

139
libvips/conversion/im_fliphor.c
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@ -1,139 +0,0 @@
/* im_fliphor
*
* Copyright: 1990, N. Dessipris
* Written on: 28/10/91
* Updated on:
* 19/7/93 JC
* - now allows IM_CODING_LABQ too
* - yuk! needs rewriting
* 21/12/94 JC
* - rewritten
* 14/4/04
* - sets Xoffset / Yoffset
* 24/3/09
* - added IM_CODING_RAD support
* 29/1/10
* - cleanups
* - gtkdoc
*/
/*
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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <vips/vips.h>
/* Flip a small area.
*/
static int
flip_gen( REGION *or, void *seq, void *a, void *b )
{
REGION *ir = (REGION *) seq;
Rect *r = &or->valid;
Rect in;
char *p, *q;
int x, y, z;
int le = r->left;
int ri = IM_RECT_RIGHT(r);
int to = r->top;
int bo = IM_RECT_BOTTOM(r);
int ps = IM_IMAGE_SIZEOF_PEL( ir->im ); /* sizeof pel */
int hgt = ir->im->Xsize - r->width;
int lastx;
/* Transform to input coordinates.
*/
in = *r;
in.left = hgt - r->left;
/* Find x of final pixel in input area.
*/
lastx = IM_RECT_RIGHT( &in ) - 1;
/* Ask for input we need.
*/
if( im_prepare( ir, &in ) )
return( -1 );
/* Loop, copying and reversing lines.
*/
for( y = to; y < bo; y++ ) {
p = IM_REGION_ADDR( ir, lastx, y );
q = IM_REGION_ADDR( or, le, y );
for( x = le; x < ri; x++ ) {
/* Copy the pel.
*/
for( z = 0; z < ps; z++ )
q[z] = p[z];
/* Skip forwards in out, back in in.
*/
q += ps;
p -= ps;
}
}
return( 0 );
}
/**
* im_fliphor:
* @in: input image
* @out: output image
*
* Flips an image left-right.
*
* See also: im_flipver(), im_rot90().
*
* Returns: 0 on success, -1 on error
*/
int
im_fliphor( IMAGE *in, IMAGE *out )
{
if( im_piocheck( in, out ) ||
im_check_coding_known( "im_fliphor", in ) ||
im_cp_desc( out, in ) ||
im_demand_hint( out, IM_THINSTRIP, in, NULL ) ||
im_generate( out,
im_start_one, flip_gen, im_stop_one, in, NULL ) )
return( -1 );
out->Xoffset = in->Xsize;
out->Yoffset = 0;
return( 0 );
}

130
libvips/conversion/im_flipver.c
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@ -1,130 +0,0 @@
/* im_flipver
*
* Copyright: 1990, N. Dessipris
* Written on: 28/10/91
* Updated on:
* 21/12/94 JC
* - adapted from new im_fliphor().
* 30/8/96 JC
* - ooops! IM_REGION_SIZEOF_LINE() not valid until im_prepare() has been
* called
* 7/3/03 JC
* - ahem, memcpy() line size calc was wrong, occasional segvs
* 14/4/04
* - sets Xoffset / Yoffset
* 24/3/09
* - added IM_CODING_RAD support
* 29/1/10
* - cleanups
* - gtkdoc
*/
/*
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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <string.h>
#include <vips/vips.h>
/* Flip a small area.
*/
static int
flip_gen( REGION *or, void *seq, void *a, void *b )
{
REGION *ir = (REGION *) seq;
Rect *r = &or->valid;
Rect in;
PEL *p, *q;
int y;
int le = r->left;
int to = r->top;
int bo = IM_RECT_BOTTOM( r );
int ls;
int psk, qsk;
/* Transform to input coordinates.
*/
in = *r;
in.top = ir->im->Ysize - bo;
/* Ask for input we need.
*/
if( im_prepare( ir, &in ) )
return( -1 );
/* Loop, copying and reversing lines.
*/
p = (PEL *) IM_REGION_ADDR( ir, le, in.top + in.height - 1 );
q = (PEL *) IM_REGION_ADDR( or, le, to );
psk = IM_REGION_LSKIP( ir );
qsk = IM_REGION_LSKIP( or );
ls = IM_REGION_SIZEOF_LINE( or );
for( y = to; y < bo; y++ ) {
memcpy( q, p, ls );
p -= psk;
q += qsk;
}
return( 0 );
}
/**
* im_flipver:
* @in: input image
* @out: output image
*
* Flips an image top-bottom.
*
* See also: im_fliphor(), im_rot90().
*
* Returns: 0 on success, -1 on error
*/
int
im_flipver( IMAGE *in, IMAGE *out )
{
if( im_piocheck( in, out ) ||
im_check_coding_known( "im_flipver", in ) ||
im_cp_desc( out, in ) ||
im_demand_hint( out, IM_THINSTRIP, in, NULL ) ||
im_generate( out,
im_start_one, flip_gen, im_stop_one, in, NULL ) )
return( -1 );
out->Xoffset = 0;
out->Yoffset = in->Ysize;
return( 0 );
}

32
libvips/deprecated/vips7compat.c
View File

@ -1079,3 +1079,35 @@ im_embed( IMAGE *in, IMAGE *out, int type, int x, int y, int width, int height )
return( 0 );
}
int
im_fliphor( IMAGE *in, IMAGE *out )
{
VipsImage *t;
if( vips_flip( in, &t, VIPS_DIRECTION_HORIZONTAL, NULL ) )
return( -1 );
if( vips_image_write( t, out ) ) {
g_object_unref( t );
return( -1 );
}
g_object_unref( t );
return( 0 );
}
int
im_flipver( IMAGE *in, IMAGE *out )
{
VipsImage *t;
if( vips_flip( in, &t, VIPS_DIRECTION_VERTICAL, NULL ) )
return( -1 );
if( vips_image_write( t, out ) ) {
g_object_unref( t );
return( -1 );
}
g_object_unref( t );
return( 0 );
}

22
libvips/include/vips/conversion.h
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@ -76,11 +76,31 @@ typedef enum {
VIPS_EXTEND_LAST = 5
} VipsExtend;
/**
* VipsDirection:
* @VIPS_DIRECTION_HORIZONTAL; left-right
* @VIPS_DIRECTION_VERTICAL; top-bottom
*
* See vips_flip(), vips_join() and so on.
*
* Operations like vips_flip() need to be told whether to flip left-right or
* top-bottom.
*
* See also: vips_flip(), vips_join().
*/
typedef enum {
VIPS_DIRECTION_HORIZONTAL,
VIPS_DIRECTION_VERTICAL,
VIPS_DIRECTION_LAST
} VipsDirection;
int vips_copy( VipsImage *in, VipsImage **out, ... )
__attribute__((sentinel));
int vips_embed( VipsImage *in, VipsImage **out,
int x, int y, int width, int height, ... )
__attribute__((sentinel));
int vips_flip( VipsImage *in, VipsImage **out, VipsDirection direction, ... )
__attribute__((sentinel));
@ -126,8 +146,6 @@ int im_replicate( VipsImage *in, VipsImage *out, int across, int down );
int im_grid( VipsImage *in, VipsImage *out, int tile_height, int across, int down );
int im_wrap( VipsImage *in, VipsImage *out, int x, int y );
int im_fliphor( VipsImage *in, VipsImage *out );
int im_flipver( VipsImage *in, VipsImage *out );
int im_rot90( VipsImage *in, VipsImage *out );
int im_rot180( VipsImage *in, VipsImage *out );
int im_rot270( VipsImage *in, VipsImage *out );

2
libvips/include/vips/enumtypes.h
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@ -9,6 +9,8 @@ G_BEGIN_DECLS
/* enumerations from "../../../libvips/include/vips/conversion.h" */
GType vips_extend_get_type (void) G_GNUC_CONST;
#define VIPS_TYPE_EXTEND (vips_extend_get_type())
GType vips_direction_get_type (void) G_GNUC_CONST;
#define VIPS_TYPE_DIRECTION (vips_direction_get_type())
/* enumerations from "../../../libvips/include/vips/util.h" */
GType vips_token_get_type (void) G_GNUC_CONST;
#define VIPS_TYPE_TOKEN (vips_token_get_type())

3
libvips/include/vips/vips7compat.h
View File

@ -540,6 +540,9 @@ int im_copy_native( VipsImage *in, VipsImage *out, gboolean is_msb_first );
int im_embed( VipsImage *in, VipsImage *out,
int type, int x, int y, int width, int height );
int im_fliphor( VipsImage *in, VipsImage *out );
int im_flipver( VipsImage *in, VipsImage *out );
/* ruby-vips uses this
*/
#define vips_class_map_concrete_all vips_class_map_all

18
libvips/iofuncs/enumtypes.c
View File

@ -26,6 +26,24 @@ vips_extend_get_type( void )
return( etype );
}
GType
vips_direction_get_type( void )
{
static GType etype = 0;
if( etype == 0 ) {
static const GEnumValue values[] = {
{VIPS_DIRECTION_HORIZONTAL, "VIPS_DIRECTION_HORIZONTAL", "horizontal"},
{VIPS_DIRECTION_VERTICAL, "VIPS_DIRECTION_VERTICAL", "vertical"},
{VIPS_DIRECTION_LAST, "VIPS_DIRECTION_LAST", "last"},
{0, NULL, NULL}
};
etype = g_enum_register_static( "VipsDirection", values );
}
return( etype );
}
/* enumerations from "../../libvips/include/vips/util.h" */
GType
vips_token_get_type( void )