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im_conv_f rewrite done

This commit is contained in:
John Cupitt 2016-06-23 20:42:03 +01:00
parent 93a55310d3
commit e60e90b0da
6 changed files with 42 additions and 401 deletions
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2
TODO
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@ -1,3 +1,5 @@
- add a convf test
- add more webp tests to py suite
- try moving some more of the CLI tests to py

3
libvips/convolution/Makefile.am
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@ -15,7 +15,6 @@ libconvolution_la_SOURCES = \
gaussblur.c \
im_aconv.c \
im_aconvsep.c \
im_conv.c \
im_conv_f.c
im_conv.c
AM_CPPFLAGS = -I${top_srcdir}/libvips/include @VIPS_CFLAGS@ @VIPS_INCLUDES@

13
libvips/convolution/conv.c
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@ -73,11 +73,11 @@ vips_conv_build( VipsObject *object )
INTMASK *imsk;
DOUBLEMASK *dmsk;
g_object_set( conv, "out", vips_image_new(), NULL );
if( VIPS_OBJECT_CLASS( vips_conv_parent_class )->build( object ) )
return( -1 );
g_object_set( conv, "out", vips_image_new(), NULL );
in = convolution->in;
/*
@ -99,13 +99,14 @@ vips_conv_build( VipsObject *object )
in = t[0];
switch( conv->precision ) {
case VIPS_PRECISION_INTEGER:
if( im_conv( in, convolution->out, imsk ) )
case VIPS_PRECISION_FLOAT:
if( vips_convf( in, &t[1], convolution->M, NULL ) ||
vips_image_write( t[1], convolution->out ) )
return( -1 );
break;
case VIPS_PRECISION_FLOAT:
if( im_conv_f( in, convolution->out, dmsk ) )
case VIPS_PRECISION_INTEGER:
if( im_conv( in, convolution->out, imsk ) )
return( -1 );
break;

6
libvips/convolution/convf.c
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@ -1,4 +1,4 @@
/* im_conv_f
/* convf
*
* Copyright: 1990, N. Dessipris.
*
@ -276,7 +276,6 @@ vips_convf_gen( REGION *or, void *vseq, void *a, void *b, gboolean *stop )
static int
vips_convf_build( VipsObject *object )
{
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( object );
VipsConvolution *convolution = (VipsConvolution *) object;
VipsConvf *convf = (VipsConvf *) object;
VipsImage **t = (VipsImage **) vips_object_local_array( object, 4 );
@ -354,11 +353,10 @@ vips_convf_build( VipsObject *object )
static void
vips_convf_class_init( VipsConvfClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
object_class->nickname = "convf";
object_class->description = _( "convolution operation, float" );
object_class->description = _( "float convolution operation" );
object_class->build = vips_convf_build;
}

389
libvips/convolution/im_conv_f.c
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@ -1,389 +0,0 @@
/* im_conv_f
*
* Copyright: 1990, N. Dessipris.
*
* Author: Nicos Dessipris & Kirk Martinez
* Written on: 29/04/1991
* Modified on: 19/05/1991
* 8/7/93 JC
* - adapted for partial v2
* - memory leaks fixed
* - ANSIfied
* 12/7/93 JC
* - adapted im_convbi() to im_convbf()
* 7/10/94 JC
* - new IM_ARRAY() macro
* - evalend callbacks
* - more typedef
* 9/3/01 JC
* - redone from im_conv()
* 27/7/01 JC
* - rejects masks with scale == 0
* 7/4/04
* - now uses im_embed() with edge stretching on the input, not
* the output
* - sets Xoffset / Yoffset
* 11/11/05
* - simpler inner loop avoids gcc4 bug
* 12/11/09
* - only rebuild the buffer offsets if bpl changes
* - tiny speedups and cleanups
* - add restrict, though it doesn't seem to help gcc
* - add mask-all-zero check
* 13/11/09
* - rename as im_conv_f() to make it easier for vips.c to make the
* overloaded version
* 3/2/10
* - gtkdoc
* - more cleanups
* 1/10/10
* - support complex (just double the bands)
* 29/10/10
* - get rid of im_convsep_f(), just call this twice, no longer worth
* keeping two versions
* 15/10/11 Nicolas
* - handle offset correctly in seperable convolutions
* 26/1/16 Lovell Fuller
* - remove Duff for a 25% speedup
*/
/*
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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 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 <stdlib.h>
#include <limits.h>
#include <vips/vips.h>
/* Our parameters ... we take a copy of the mask argument, plus we make a
* smaller version with the zeros squeezed out.
*/
typedef struct {
IMAGE *in;
IMAGE *out;
DOUBLEMASK *mask; /* Copy of mask arg */
int nnz; /* Number of non-zero mask elements */
double *coeff; /* Array of non-zero mask coefficients */
int *coeff_pos; /* Index of each nnz element in mask->coeff */
} Conv;
static int
conv_close( Conv *conv )
{
IM_FREEF( im_free_dmask, conv->mask );
return( 0 );
}
static Conv *
conv_new( IMAGE *in, IMAGE *out, DOUBLEMASK *mask )
{
Conv *conv = IM_NEW( out, Conv );
const int ne = mask->xsize * mask->ysize;
int i;
if( !conv )
return( NULL );
conv->in = in;
conv->out = out;
conv->mask = NULL;
conv->nnz = 0;
conv->coeff = NULL;
if( im_add_close_callback( out,
(im_callback_fn) conv_close, conv, NULL ) ||
!(conv->coeff = IM_ARRAY( out, ne, double )) ||
!(conv->coeff_pos = IM_ARRAY( out, ne, int )) ||
!(conv->mask = im_dup_dmask( mask, "conv_mask" )) )
return( NULL );
/* Find non-zero mask elements.
*/
for( i = 0; i < ne; i++ )
if( mask->coeff[i] ) {
conv->coeff[conv->nnz] = mask->coeff[i];
conv->coeff_pos[conv->nnz] = i;
conv->nnz += 1;
}
/* Was the whole mask zero? We must have at least 1 element in there:
* set it to zero.
*/
if( conv->nnz == 0 ) {
conv->coeff[0] = mask->coeff[0];
conv->coeff_pos[0] = 0;
conv->nnz = 1;
}
return( conv );
}
/* Our sequence value.
*/
typedef struct {
Conv *conv;
REGION *ir; /* Input region */
int *offsets; /* Offsets for each non-zero matrix element */
VipsPel **pts; /* Per-non-zero mask element image pointers */
int last_bpl; /* Avoid recalcing offsets, if we can */
} ConvSequence;
/* Free a sequence value.
*/
static int
conv_stop( void *vseq, void *a, void *b )
{
ConvSequence *seq = (ConvSequence *) vseq;
IM_FREEF( im_region_free, seq->ir );
return( 0 );
}
/* Convolution start function.
*/
static void *
conv_start( IMAGE *out, void *a, void *b )
{
IMAGE *in = (IMAGE *) a;
Conv *conv = (Conv *) b;
ConvSequence *seq;
if( !(seq = IM_NEW( out, ConvSequence )) )
return( NULL );
/* Init!
*/
seq->conv = conv;
seq->ir = NULL;
seq->pts = NULL;
seq->last_bpl = -1;
/* Attach region and arrays.
*/
seq->ir = im_region_create( in );
seq->offsets = IM_ARRAY( out, conv->nnz, int );
seq->pts = IM_ARRAY( out, conv->nnz, VipsPel * );
if( !seq->ir || !seq->offsets || !seq->pts ) {
conv_stop( seq, in, conv );
return( NULL );
}
return( (void *) seq );
}
#define CONV_FLOAT( ITYPE, OTYPE ) { \
ITYPE ** restrict p = (ITYPE **) seq->pts; \
OTYPE * restrict q = (OTYPE *) IM_REGION_ADDR( or, le, y ); \
\
for( x = 0; x < sz; x++ ) { \
double sum; \
int i; \
\
sum = 0; \
for ( i = 0; i < nnz; i++ ) \
sum += t[i] * p[i][x]; \
\
sum = (sum / mask->scale) + mask->offset; \
\
q[x] = sum; \
} \
}
/* Convolve!
*/
static int
conv_gen( REGION *or, void *vseq, void *a, void *b )
{
ConvSequence *seq = (ConvSequence *) vseq;
IMAGE *in = (IMAGE *) a;
Conv *conv = (Conv *) b;
REGION *ir = seq->ir;
DOUBLEMASK *mask = conv->mask;
double * restrict t = conv->coeff;
const int nnz = conv->nnz;
Rect *r = &or->valid;
Rect s;
int le = r->left;
int to = r->top;
int bo = IM_RECT_BOTTOM(r);
int sz = IM_REGION_N_ELEMENTS( or ) *
(vips_band_format_iscomplex( in->BandFmt ) ? 2 : 1);
int x, y, z, i;
/* Prepare the section of the input image we need. A little larger
* than the section of the output image we are producing.
*/
s = *r;
s.width += mask->xsize - 1;
s.height += mask->ysize - 1;
if( im_prepare( ir, &s ) )
return( -1 );
/* Fill offset array. Only do this if the bpl has changed since the
* previous im_prepare().
*/
if( seq->last_bpl != IM_REGION_LSKIP( ir ) ) {
seq->last_bpl = IM_REGION_LSKIP( ir );
for( i = 0; i < nnz; i++ ) {
z = conv->coeff_pos[i];
x = z % conv->mask->xsize;
y = z / conv->mask->xsize;
seq->offsets[i] =
IM_REGION_ADDR( ir, x + le, y + to ) -
IM_REGION_ADDR( ir, le, to );
}
}
for( y = to; y < bo; y++ ) {
/* Init pts for this line of PELs.
*/
for( z = 0; z < nnz; z++ )
seq->pts[z] = seq->offsets[z] +
IM_REGION_ADDR( ir, le, y );
switch( in->BandFmt ) {
case IM_BANDFMT_UCHAR:
CONV_FLOAT( unsigned char, float ); break;
case IM_BANDFMT_CHAR:
CONV_FLOAT( signed char, float ); break;
case IM_BANDFMT_USHORT:
CONV_FLOAT( unsigned short, float ); break;
case IM_BANDFMT_SHORT:
CONV_FLOAT( signed short, float ); break;
case IM_BANDFMT_UINT:
CONV_FLOAT( unsigned int, float ); break;
case IM_BANDFMT_INT:
CONV_FLOAT( signed int, float ); break;
case IM_BANDFMT_FLOAT:
case IM_BANDFMT_COMPLEX:
CONV_FLOAT( float, float ); break;
case IM_BANDFMT_DOUBLE:
case IM_BANDFMT_DPCOMPLEX:
CONV_FLOAT( double, double ); break;
default:
g_assert_not_reached();
}
}
return( 0 );
}
int
im_conv_f_raw( IMAGE *in, IMAGE *out, DOUBLEMASK *mask )
{
Conv *conv;
/* Check parameters.
*/
if( im_piocheck( in, out ) ||
im_check_uncoded( "im_conv", in ) ||
im_check_dmask( "im_conv", mask ) )
return( -1 );
if( mask->scale == 0 ) {
im_error( "im_conv_f", "%s", "mask scale must be non-zero" );
return( -1 );
}
if( !(conv = conv_new( in, out, mask )) )
return( -1 );
/* Prepare output. Consider a 7x7 mask and a 7x7 image --- the output
* would be 1x1.
*/
if( im_cp_desc( out, in ) )
return( -1 );
if( vips_bandfmt_isint( in->BandFmt ) )
out->BandFmt = IM_BANDFMT_FLOAT;
out->Xsize -= mask->xsize - 1;
out->Ysize -= mask->ysize - 1;
if( out->Xsize <= 0 || out->Ysize <= 0 ) {
im_error( "im_conv_f", "%s", _( "image too small for mask" ) );
return( -1 );
}
if( im_demand_hint( out, IM_SMALLTILE, in, NULL ) )
return( -1 );
if( im_generate( out, conv_start, conv_gen, conv_stop, in, conv ) )
return( -1 );
out->Xoffset = -mask->xsize / 2;
out->Yoffset = -mask->ysize / 2;
return( 0 );
}
/**
* im_conv_f:
* @in: input image
* @out: output image
* @mask: convolution mask
*
* Convolve @in with @mask using floating-point arithmetic. The output image
* is always %IM_BANDFMT_FLOAT unless @in is %IM_BANDFMT_DOUBLE, in which case
* @out is also %IM_BANDFMT_DOUBLE.
*
* Each output pixel is
* calculated as sigma[i]{pixel[i] * mask[i]} / scale + offset, where scale
* and offset are part of @mask.
*
* See also: im_conv(), im_convsep_f(), im_create_dmaskv().
*
* Returns: 0 on success, -1 on error
*/
int
im_conv_f( IMAGE *in, IMAGE *out, DOUBLEMASK *mask )
{
IMAGE *t1 = im_open_local( out, "im_conv_f intermediate", "p" );
if( !t1 ||
im_embed( in, t1, 1, mask->xsize / 2, mask->ysize / 2,
in->Xsize + mask->xsize - 1,
in->Ysize + mask->ysize - 1 ) ||
im_conv_f_raw( t1, out, mask ) )
return( -1 );
out->Xoffset = 0;
out->Yoffset = 0;
return( 0 );
}

30
libvips/deprecated/vips7compat.c
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@ -2404,6 +2404,36 @@ im_convsep_f( IMAGE *in, IMAGE *out, DOUBLEMASK *mask )
return( 0 );
}
int
im_conv_f( VipsImage *in, VipsImage *out, DOUBLEMASK *mask )
{
VipsImage *t1, *t2;
if( !(t1 = vips_image_new()) ||
im_mask2vips( mask, t1 ) )
return( -1 );
if( vips_convf( in, &t2, t1,
NULL ) ) {
g_object_unref( t1 );
return( -1 );
}
g_object_unref( t1 );
if( vips_image_write( t2, out ) ) {
g_object_unref( t2 );
return( -1 );
}
g_object_unref( t2 );
return( 0 );
}
int
im_conv_f_raw( VipsImage *in, VipsImage *out, DOUBLEMASK *mask )
{
im_error( "im_conv_f_raw", "no compat function" );
return( -1 );
}
int
im_addgnoise( IMAGE *in, IMAGE *out, double sigma )
{