133 lines
3.0 KiB
C
133 lines
3.0 KiB
C
|
/* @(#) dir = 0:
|
||
|
|
* @(#) For each vertical line, find the position of the first
|
||
|
|
* @(#) non-zero pixel from the top. Output is USHORT with
|
||
|
|
* @(#) width = input width, height = 1.
|
||
|
|
* @(#)
|
||
|
|
* @(#) dir = 1:
|
||
|
|
* @(#) For each horizontal line, find the position of the first
|
||
|
|
* @(#) non-zero pixel from the left. Output is USHORT with
|
||
|
|
* @(#) width = 1, height = input height
|
||
|
|
* @(#)
|
||
|
|
* @(#) int im_profile( IMAGE *in, IMAGE *out, int dir )
|
||
|
|
* @(#)
|
||
|
|
* @(#) Returns 0 on success and non-zero on error
|
||
|
|
*
|
||
|
|
* 11/8/99 JC
|
||
|
|
* - from im_cntlines()
|
||
|
|
* 22/4/04
|
||
|
|
* - now outputs horizontal/vertical image
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
|
||
|
|
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 <vips/vips.h>
|
||
|
|
|
||
|
|
#ifdef WITH_DMALLOC
|
||
|
|
#include <dmalloc.h>
|
||
|
|
#endif /*WITH_DMALLOC*/
|
||
|
|
|
||
|
|
int
|
||
|
|
im_profile( IMAGE *in, IMAGE *out, int dir )
|
||
|
|
{
|
||
|
|
int x, y;
|
||
|
|
unsigned short *buf;
|
||
|
|
|
||
|
|
/* Check im.
|
||
|
|
*/
|
||
|
|
if( im_iocheck( in, out ) )
|
||
|
|
return( -1 );
|
||
|
|
if( in->Coding != IM_CODING_NONE || in->BandFmt != IM_BANDFMT_UCHAR ||
|
||
|
|
in->Bands != 1 ) {
|
||
|
|
im_errormsg( "im_profile: 1-band uchar uncoded only" );
|
||
|
|
return( -1 );
|
||
|
|
}
|
||
|
|
if( dir != 0 && dir != 1 ) {
|
||
|
|
im_errormsg( "im_profile: dir not 0 or 1" );
|
||
|
|
return( -1 );
|
||
|
|
}
|
||
|
|
|
||
|
|
if( im_cp_desc( out, in ) )
|
||
|
|
return( -1 );
|
||
|
|
out->Type = IM_TYPE_HISTOGRAM;
|
||
|
|
if( dir == 0 ) {
|
||
|
|
out->Xsize = in->Xsize;
|
||
|
|
out->Ysize = 1;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
out->Xsize = 1;
|
||
|
|
out->Ysize = in->Ysize;
|
||
|
|
}
|
||
|
|
out->BandFmt = IM_BANDFMT_USHORT;
|
||
|
|
out->Bbits = IM_BBITS_SHORT;
|
||
|
|
if( im_setupout( out ) )
|
||
|
|
return( -1 );
|
||
|
|
if( !(buf = IM_ARRAY( out, out->Xsize, unsigned short )) )
|
||
|
|
return( -1 );
|
||
|
|
|
||
|
|
if( dir == 0 ) {
|
||
|
|
/* Find vertical lines.
|
||
|
|
*/
|
||
|
|
for( x = 0; x < in->Xsize; x++ ) {
|
||
|
|
PEL *p = (PEL *) IM_IMAGE_ADDR( in, x, 0 );
|
||
|
|
int lsk = IM_IMAGE_SIZEOF_LINE( in );
|
||
|
|
|
||
|
|
for( y = 0; y < in->Ysize; y++ )
|
||
|
|
if( p[y * lsk] )
|
||
|
|
break;
|
||
|
|
|
||
|
|
buf[x] = y;
|
||
|
|
}
|
||
|
|
|
||
|
|
if( im_writeline( 0, out, (PEL *) buf ) )
|
||
|
|
return( -1 );
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
/* Count horizontal lines.
|
||
|
|
*/
|
||
|
|
for( y = 0; y < in->Ysize; y++ ) {
|
||
|
|
PEL *p = (PEL *) IM_IMAGE_ADDR( in, 0, y );
|
||
|
|
|
||
|
|
for( x = 0; x < in->Xsize; x++ )
|
||
|
|
if( p[x] )
|
||
|
|
break;
|
||
|
|
|
||
|
|
buf[0] = x;
|
||
|
|
|
||
|
|
if( im_writeline( y, out, (PEL *) buf ) )
|
||
|
|
return( -1 );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
return( 0 );
|
||
|
|
}
|