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move ppm read/write to new-style

This commit is contained in:
John Cupitt 2011-12-20 09:37:07 +00:00
parent 0377920764
commit 70bde4a90d
12 changed files with 1152 additions and 711 deletions
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3
ChangeLog
View File

@ -15,7 +15,8 @@
im_bandmean(), im_c2real(), im_c2imag(), im_ri2c(), im_jpeg*2vips(),
im_vips2jpeg*(), im_tiff2vips(), im_vips2tiff(), im_exr2vips(),
im_fits2vips(), im_vips2fits(), im_analyze2vips(), im_raw2vips(),
im_vips2raw(), im_magick2vips(), im_png2vips(), im_png2*()
im_vips2raw(), im_magick2vips(), im_png2vips(), im_png2*(), im_ppm2vips(),
im_vips2ppm()
redone as classes
- added argument priorites to help control arg ordering
- generate has a 'stop' param to signal successful early termination

8
TODO
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@ -1,10 +1,6 @@
- vips2bufpng() is leaky
- interlace should be a bool?
- radiance, matlab, ppm to go still
- radiance, matlab to go still
- saverawfd should be renamed saveraw_fd, cf. pngsave_buffer
@ -14,6 +10,8 @@
do we need vips_image_wio_output()? can't vips_image_write_line() call this
as well?
we need it in case we write to the data pointer of a "t" image I guess
- magickload is broken
$ vips magickload healthygirl.jpg x.v

4
libvips/foreign/Makefile.am
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@ -1,6 +1,10 @@
noinst_LTLIBRARIES = libforeign.la
libforeign_la_SOURCES = \
ppm.h \
ppm.c \
ppmload.c \
ppmsave.c \
csv.h \
csv.c \
csvload.c \

4
libvips/foreign/foreign.c
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@ -1194,6 +1194,8 @@ vips_foreign_write_options( VipsImage *in, const char *filename )
void
vips_foreign_operation_init( void )
{
extern GType vips_foreign_load_ppm_get_type( void );
extern GType vips_foreign_save_ppm_get_type( void );
extern GType vips_foreign_load_png_get_type( void );
extern GType vips_foreign_save_png_file_get_type( void );
extern GType vips_foreign_save_png_buffer_get_type( void );
@ -1218,6 +1220,8 @@ vips_foreign_operation_init( void )
extern GType vips_foreign_save_rawfd_get_type( void );
extern GType vips_foreign_load_magick_get_type( void );
vips_foreign_load_ppm_get_type();
vips_foreign_save_ppm_get_type();
vips_foreign_load_csv_get_type();
vips_foreign_save_csv_get_type();
vips_foreign_load_analyze_get_type();

731
libvips/foreign/ppm.c Normal file
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@ -0,0 +1,731 @@
/* Read a ppm file.
*
* Stephen Chan ... original code
*
* 21/11/00 JC
* - hacked for VIPS
* - reads ppm/pgm/pbm
* - mmaps binary pgm/ppm
* - reads all ascii formats (slowly!)
* 22/11/00 JC
* - oops, ascii read was broken
* - does 16/32 bit ascii now as well
* 24/5/01
* - im_ppm2vips_header() added
* 28/11/03 JC
* - better no-overshoot on tile loop
* 22/5/04
* - does 16/32 bit binary too
* - tiny fix for missing file close on read error
* 19/8/05
* - use im_raw2vips() for binary read
* 9/9/05
* - tiny cleanups
* 3/11/07
* - use im_wbuffer() for bg writes
* 4/2/10
* - gtkdoc
* 1/5/10
* - add PFM (portable float map) support
* 19/12/11
* - rework as a set of fns ready to be called from 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
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <vips/vips.h>
#include <vips/internal.h>
/* The largest number/field/whatever we can read.
*/
#define MAX_THING (80)
static void
skip_line( FILE *fp )
{
int ch;
while( (ch = fgetc( fp )) != '\n' )
;
}
static void
skip_white_space( FILE *fp )
{
int ch;
while( isspace( ch = fgetc( fp ) ) )
;
ungetc( ch, fp );
if( ch == '#' ) {
skip_line( fp );
skip_white_space( fp );
}
}
static int
read_int( FILE *fp, int *i )
{
skip_white_space( fp );
if( fscanf( fp, "%d", i ) != 1 ) {
vips_error( "ppm2vips", "%s", _( "bad int" ) );
return( -1 );
}
return( 0 );
}
static int
read_float( FILE *fp, float *f )
{
skip_white_space( fp );
if( fscanf( fp, "%f", f ) != 1 ) {
vips_error( "ppm2vips", "%s", _( "bad float" ) );
return( -1 );
}
return( 0 );
}
/* ppm types.
*/
static char *magic_names[] = {
"P1", /* pbm ... 1 band 1 bit, ascii */
"P2", /* pgm ... 1 band many bit, ascii */
"P3", /* ppm ... 3 band many bit, ascii */
"P4", /* pbm ... 1 band 1 bit, binary */
"P5", /* pgm ... 1 band 8 bit, binary */
"P6", /* ppm ... 3 band 8 bit, binary */
"PF", /* pfm ... 3 band 32 bit, binary */
"Pf" /* pfm ... 1 band 32 bit, binary */
};
static int
read_header( FILE *fp, VipsImage *out, int *bits, int *ascii, int *msb_first )
{
int width, height, bands;
VipsBandFormat format;
VipsInterpretation interpretation;
int index;
char buf[MAX_THING];
/* Characteristics, indexed by ppm type.
*/
static int lookup_bits[] = {
1, 8, 8, 1, 8, 8, 32, 32
};
static int lookup_bands[] = {
1, 1, 3, 1, 1, 3, 3, 1
};
static int lookup_ascii[] = {
1, 1, 1, 0, 0, 0, 0, 0
};
/* Read in the magic number.
*/
buf[0] = fgetc( fp );
buf[1] = fgetc( fp );
buf[2] = '\0';
for( index = 0; index < VIPS_NUMBER( magic_names ); index++ )
if( strcmp( magic_names[index], buf ) == 0 )
break;
if( index == VIPS_NUMBER( magic_names ) ) {
vips_error( "ppm2vips", "%s", _( "bad magic number" ) );
return( -1 );
}
*bits = lookup_bits[index];
bands = lookup_bands[index];
*ascii = lookup_ascii[index];
/* Default ... can be changed below for PFM images.
*/
*msb_first = 0;
/* Read in size.
*/
if( read_int( fp, &width ) ||
read_int( fp, &height ) )
return( -1 );
/* Read in max value / scale for >1 bit images.
*/
if( *bits > 1 ) {
if( index == 6 || index == 7 ) {
float scale;
if( read_float( fp, &scale ) )
return( -1 );
/* Scale > 0 means big-endian.
*/
*msb_first = scale > 0;
vips_image_set_double( out,
"pfm-scale", fabs( scale ) );
}
else {
int max_value;
if( read_int( fp, &max_value ) )
return( -1 );
if( max_value > 255 )
*bits = 16;
if( max_value > 65535 )
*bits = 32;
}
}
/* For binary images, there is always exactly 1 more whitespace
* character before the data starts.
*/
if( !*ascii && !isspace( fgetc( fp ) ) ) {
vips_error( "ppm2vips", "%s",
_( "not whitespace before start of binary data" ) );
return( -1 );
}
/* Choose a VIPS bandfmt.
*/
switch( *bits ) {
case 1:
case 8:
format = VIPS_FORMAT_UCHAR;
break;
case 16:
format = VIPS_FORMAT_USHORT;
break;
case 32:
if( index == 6 || index == 7 )
format = VIPS_FORMAT_FLOAT;
else
format = VIPS_FORMAT_UINT;
break;
default:
g_assert( 0 );
}
if( bands == 1 ) {
if( format == VIPS_FORMAT_USHORT )
interpretation = VIPS_INTERPRETATION_GREY16;
else
interpretation = VIPS_INTERPRETATION_B_W;
}
else {
if( format == VIPS_FORMAT_USHORT )
interpretation = VIPS_INTERPRETATION_RGB16;
else if( format == VIPS_FORMAT_UINT )
interpretation = VIPS_INTERPRETATION_RGB;
else
interpretation = VIPS_INTERPRETATION_sRGB;
}
vips_image_init_fields( out,
width, height, bands, format,
VIPS_CODING_NONE, interpretation, 1.0, 1.0 );
return( 0 );
}
/* Read a ppm/pgm file using mmap().
*/
static int
read_mmap( FILE *fp, const char *filename, int msb_first, VipsImage *out )
{
const guint64 header_offset = ftell( fp );
VipsImage *x = vips_image_new();
VipsImage **t = (VipsImage **)
vips_object_local_array( VIPS_OBJECT( x ), 3 );
if( vips_rawload( filename, &t[0],
out->Xsize, out->Ysize, VIPS_IMAGE_SIZEOF_PEL( out ),
"offset", header_offset,
NULL ) ||
vips_copy( t[0], &t[1],
"bands", out->Bands,
"format", out->BandFmt,
"coding", out->Coding,
NULL ) ||
vips_copy( t[1], &t[2],
"swap", !vips_amiMSBfirst(),
NULL ) ||
vips_image_write( t[2], out ) ) {
g_object_unref( x );
return( -1 );
}
g_object_unref( x );
return( 0 );
}
/* Read an ascii ppm/pgm file.
*/
static int
read_ascii( FILE *fp, VipsImage *out )
{
int x, y;
PEL *buf;
if( vips_image_wio_output( out ) ||
!(buf = VIPS_ARRAY( out, VIPS_IMAGE_SIZEOF_LINE( out ), PEL )) )
return( -1 );
for( y = 0; y < out->Ysize; y++ ) {
for( x = 0; x < out->Xsize * out->Bands; x++ ) {
int val;
if( read_int( fp, &val ) )
return( -1 );
switch( out->BandFmt ) {
case VIPS_FORMAT_UCHAR:
buf[x] = VIPS_CLIP( 0, val, 255 );
break;
case VIPS_FORMAT_USHORT:
((unsigned short *) buf)[x] =
VIPS_CLIP( 0, val, 65535 );
break;
case VIPS_FORMAT_UINT:
((unsigned int *) buf)[x] = val;
break;
default:
g_assert( 0 );
}
}
if( vips_image_write_line( out, y, buf ) )
return( -1 );
}
return( 0 );
}
/* Read an ascii 1 bit file.
*/
static int
read_1bit_ascii( FILE *fp, VipsImage *out )
{
int x, y;
PEL *buf;
if( vips_image_wio_output( out ) ||
!(buf = VIPS_ARRAY( out, VIPS_IMAGE_SIZEOF_LINE( out ), PEL )) )
return( -1 );
for( y = 0; y < out->Ysize; y++ ) {
for( x = 0; x < out->Xsize * out->Bands; x++ ) {
int val;
if( read_int( fp, &val ) )
return( -1 );
if( val == 1 )
buf[x] = 0;
else
buf[x] = 255;
}
if( vips_image_write_line( out, y, buf ) )
return( -1 );
}
return( 0 );
}
/* Read a 1 bit binary file.
*/
static int
read_1bit_binary( FILE *fp, VipsImage *out )
{
int x, y, i;
int bits;
PEL *buf;
if( vips_image_wio_output( out ) ||
!(buf = VIPS_ARRAY( out, VIPS_IMAGE_SIZEOF_LINE( out ), PEL )) )
return( -1 );
bits = fgetc( fp );
for( i = 0, y = 0; y < out->Ysize; y++ ) {
for( x = 0; x < out->Xsize * out->Bands; x++, i++ ) {
buf[x] = (bits & 128) ? 255 : 0;
bits <<= 1;
if( (i & 7) == 7 )
bits = fgetc( fp );
}
if( vips_image_write_line( out, y, buf ) )
return( -1 );
}
return( 0 );
}
static int
parse_ppm( FILE *fp, const char *filename, VipsImage *out )
{
int bits;
int ascii;
int msb_first;
if( read_header( fp, out, &bits, &ascii, &msb_first ) )
return( -1 );
/* What sort of read are we doing?
*/
if( !ascii && bits >= 8 )
return( read_mmap( fp, filename, msb_first, out ) );
else if( !ascii && bits == 1 )
return( read_1bit_binary( fp, out ) );
else if( ascii && bits == 1 )
return( read_1bit_ascii( fp, out ) );
else
return( read_ascii( fp, out ) );
}
int
vips__ppm_header( const char *filename, VipsImage *out )
{
FILE *fp;
int bits;
int ascii;
int msb_first;
if( !(fp = vips__file_open_read( filename, NULL, FALSE )) )
return( -1 );
if( read_header( fp, out, &bits, &ascii, &msb_first ) ) {
fclose( fp );
return( -1 );
}
fclose( fp );
return( 0 );
}
/* Can this PPM file be read with a mmap?
*/
static int
isppmmmap( const char *filename )
{
VipsImage *im;
FILE *fp;
int bits;
int ascii;
int msb_first;
if( !(fp = vips__file_open_read( filename, NULL, FALSE )) )
return( -1 );
im = vips_image_new();
if( read_header( fp, im, &bits, &ascii, &msb_first ) ) {
g_object_unref( im );
fclose( fp );
return( 0 );
}
g_object_unref( im );
fclose( fp );
return( !ascii && bits >= 8 );
}
int
vips__ppm_load( const char *filename, VipsImage *out )
{
FILE *fp;
/* Note that we open in binary mode. If this is a binary PPM, we need
* to be able to mmap it.
*/
if( !(fp = vips__file_open_read( filename, NULL, FALSE )) )
return( -1 );
if( parse_ppm( fp, filename, out ) ) {
fclose( fp );
return( -1 );
}
fclose( fp );
return( 0 );
}
int
vips__ppm_isppm( const char *filename )
{
PEL buf[3];
if( vips__get_bytes( filename, buf, 2 ) ) {
int i;
buf[2] = '\0';
for( i = 0; i < VIPS_NUMBER( magic_names ); i++ )
if( strcmp( (char *) buf, magic_names[i] ) == 0 )
return( TRUE );
}
return( 0 );
}
/* ppm flags function.
*/
VipsFormatFlags
vips__ppm_flags( const char *filename )
{
VipsFormatFlags flags;
flags = 0;
if( isppmmmap( filename ) )
flags |= VIPS_FORMAT_PARTIAL;
return( flags );
}
const char *vips__ppm_suffs[] = { ".ppm", ".pgm", ".pbm", ".pfm", NULL };
typedef int (*write_fn)( VipsImage *in, FILE *fp, PEL *p );
/* What we track during a PPM write.
*/
typedef struct {
VipsImage *in;
FILE *fp;
char *name;
write_fn fn;
} Write;
static void
write_destroy( Write *write )
{
VIPS_FREEF( fclose, write->fp );
VIPS_FREE( write->name );
vips_free( write );
}
static Write *
write_new( VipsImage *in, const char *name )
{
Write *write;
if( !(write = VIPS_NEW( NULL, Write )) )
return( NULL );
write->in = in;
write->name = vips_strdup( NULL, name );
write->fp = vips__file_open_write( name, FALSE );
if( !write->name || !write->fp ) {
write_destroy( write );
return( NULL );
}
return( write );
}
static int
write_ppm_line_ascii( VipsImage *in, FILE *fp, PEL *p )
{
const int sk = VIPS_IMAGE_SIZEOF_PEL( in );
int x, k;
for( x = 0; x < in->Xsize; x++ ) {
for( k = 0; k < in->Bands; k++ ) {
switch( in->BandFmt ) {
case VIPS_FORMAT_UCHAR:
fprintf( fp, "%d ", p[k] );
break;
case VIPS_FORMAT_USHORT:
fprintf( fp, "%d ", ((unsigned short *) p)[k] );
break;
case VIPS_FORMAT_UINT:
fprintf( fp, "%d ", ((unsigned int *) p)[k] );
break;
default:
g_assert( 0 );
}
}
fprintf( fp, " " );
p += sk;
}
if( !fprintf( fp, "\n" ) ) {
vips_error( "vips2ppm",
"%s", _( "write error ... disc full?" ) );
return( -1 );
}
return( 0 );
}
static int
write_ppm_line_binary( VipsImage *in, FILE *fp, PEL *p )
{
if( !fwrite( p, VIPS_IMAGE_SIZEOF_LINE( in ), 1, fp ) ) {
vips_error( "vips2ppm",
"%s", _( "write error ... disc full?" ) );
return( -1 );
}
return( 0 );
}
static int
write_ppm_block( REGION *region, Rect *area, void *a )
{
Write *write = (Write *) a;
int i;
for( i = 0; i < area->height; i++ ) {
PEL *p = (PEL *) VIPS_REGION_ADDR( region, 0, area->top + i );
if( write->fn( write->in, write->fp, p ) )
return( -1 );
}
return( 0 );
}
static int
write_ppm( Write *write, int ascii )
{
VipsImage *in = write->in;
char *magic;
time_t timebuf;
if( in->BandFmt == VIPS_FORMAT_FLOAT && in->Bands == 3 )
magic = "PF";
else if( in->BandFmt == VIPS_FORMAT_FLOAT && in->Bands == 1 )
magic = "Pf";
else if( in->Bands == 1 && ascii )
magic = "P2";
else if( in->Bands == 1 && !ascii )
magic = "P5";
else if( in->Bands == 3 && ascii )
magic = "P3";
else if( in->Bands == 3 && !ascii )
magic = "P6";
else
g_assert( 0 );
fprintf( write->fp, "%s\n", magic );
time( &timebuf );
fprintf( write->fp, "#vips2ppm - %s\n", ctime( &timebuf ) );
fprintf( write->fp, "%d %d\n", in->Xsize, in->Ysize );
switch( in->BandFmt ) {
case VIPS_FORMAT_UCHAR:
fprintf( write->fp, "%d\n", UCHAR_MAX );
break;
case VIPS_FORMAT_USHORT:
fprintf( write->fp, "%d\n", USHRT_MAX );
break;
case VIPS_FORMAT_UINT:
fprintf( write->fp, "%d\n", UINT_MAX );
break;
case VIPS_FORMAT_FLOAT:
{
double scale;
if( vips_image_get_double( in, "pfm-scale", &scale ) )
scale = 1;
if( !vips_amiMSBfirst() )
scale *= -1;
fprintf( write->fp, "%g\n", scale );
}
break;
default:
g_assert( 0 );
}
write->fn = ascii ? write_ppm_line_ascii : write_ppm_line_binary;
if( vips_sink_disc( write->in, write_ppm_block, write ) )
return( -1 );
return( 0 );
}
int
vips__ppm_save( VipsImage *in, const char *filename, gboolean ascii )
{
Write *write;
if( vips_check_uintorf( "vips2ppm", in ) ||
vips_check_bands_1or3( "vips2ppm", in ) ||
vips_check_uncoded( "vips2ppm", in ) ||
vips_image_pio_input( in ) )
return( -1 );
/* We can only write >8 bit binary images in float.
*/
if( vips_format_sizeof( in->BandFmt ) > 1 &&
!ascii &&
in->BandFmt != VIPS_FORMAT_FLOAT ) {
vips_error( "vips2ppm",
"%s", _( "binary >8 bit images must be float" ) );
return( -1 );
}
if( !(write = write_new( in, filename )) )
return( -1 );
if( write_ppm( write, ascii ) ) {
write_destroy( write );
return( -1 );
}
write_destroy( write );
return( 0 );
}

50
libvips/foreign/ppm.h Normal file
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@ -0,0 +1,50 @@
/* common defs for ppm read/write
*/
/*
Copyright (C) 1991-2005 The National Gallery
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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 General Public License for more details.
You should have received a copy of the GNU 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 VIPS_PPM_H
#define VIPS_PPM_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
int vips__ppm_header( const char *name, VipsImage *out );
int vips__ppm_load( const char *name, VipsImage *out );
int vips__ppm_isppm( const char *filename );
VipsFormatFlags vips__ppm_flags( const char *filename );
extern const char *vips__ppm_suffs[];
int vips__ppm_save( VipsImage *in, const char *filename,
gboolean ascii );
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_PPM_H*/

166
libvips/foreign/ppmload.c Normal file
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@ -0,0 +1,166 @@
/* load ppm from a file
*
* 5/12/11
* - from tiffload.c
*/
/*
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 DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vips/vips.h>
#include <vips/buf.h>
#include <vips/internal.h>
#include "ppm.h"
typedef struct _VipsForeignLoadPpm {
VipsForeignLoad parent_object;
/* Filename for load.
*/
char *filename;
} VipsForeignLoadPpm;
typedef VipsForeignLoadClass VipsForeignLoadPpmClass;
G_DEFINE_TYPE( VipsForeignLoadPpm, vips_foreign_load_ppm,
VIPS_TYPE_FOREIGN_LOAD );
static VipsForeignFlags
vips_foreign_load_ppm_get_flags_filename( const char *filename )
{
return( vips__ppm_flags( filename ) );
}
static VipsForeignFlags
vips_foreign_load_ppm_get_flags( VipsForeignLoad *load )
{
VipsForeignLoadPpm *ppm = (VipsForeignLoadPpm *) load;
return( vips_foreign_load_ppm_get_flags_filename( ppm->filename ) );
}
static int
vips_foreign_load_ppm_header( VipsForeignLoad *load )
{
VipsForeignLoadPpm *ppm = (VipsForeignLoadPpm *) load;
if( vips__ppm_header( ppm->filename, load->out ) )
return( -1 );
return( 0 );
}
static int
vips_foreign_load_ppm_load( VipsForeignLoad *load )
{
VipsForeignLoadPpm *ppm = (VipsForeignLoadPpm *) load;
if( vips__ppm_load( ppm->filename, load->real ) )
return( -1 );
return( 0 );
}
static void
vips_foreign_load_ppm_class_init( VipsForeignLoadPpmClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsForeignClass *foreign_class = (VipsForeignClass *) class;
VipsForeignLoadClass *load_class = (VipsForeignLoadClass *) class;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
object_class->nickname = "ppmload";
object_class->description = _( "load ppm from file" );
foreign_class->suffs = vips__ppm_suffs;
load_class->is_a = vips__ppm_isppm;
load_class->get_flags_filename =
vips_foreign_load_ppm_get_flags_filename;
load_class->get_flags = vips_foreign_load_ppm_get_flags;
load_class->header = vips_foreign_load_ppm_header;
load_class->load = vips_foreign_load_ppm_load;
VIPS_ARG_STRING( class, "filename", 1,
_( "Filename" ),
_( "Filename to load from" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsForeignLoadPpm, filename ),
NULL );
}
static void
vips_foreign_load_ppm_init( VipsForeignLoadPpm *ppm )
{
}
/**
* vips_ppmload:
* @filename: file to load
* @out: output image
* @...: %NULL-terminated list of optional named arguments
*
* Read a PPM/PBM/PGM/PFM file into a VIPS image.
*
* It can read 1, 8, 16 and 32 bit images, colour or monochrome,
* stored in binary or in ASCII. One bit images become 8 bit VIPS images,
* with 0 and 255 for 0 and 1.
*
* See also: vips_image_new_from_file().
*
* Returns: 0 on success, -1 on error.
*/
int
vips_ppmload( const char *filename, VipsImage **out, ... )
{
va_list ap;
int result;
va_start( ap, out );
result = vips_call_split( "ppmload", ap, filename, out );
va_end( ap );
return( result );
}

173
libvips/foreign/ppmsave.c Normal file
View File

@ -0,0 +1,173 @@
/* save to ppm
*
* 2/12/11
* - wrap a class around the ppm writer
*/
/*
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 DEBUG_VERBOSE
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <vips/vips.h>
#include "ppm.h"
typedef struct _VipsForeignSavePpm {
VipsForeignSave parent_object;
char *filename;
gboolean ascii;
} VipsForeignSavePpm;
typedef VipsForeignSaveClass VipsForeignSavePpmClass;
G_DEFINE_TYPE( VipsForeignSavePpm, vips_foreign_save_ppm,
VIPS_TYPE_FOREIGN_SAVE );
static int
vips_foreign_save_ppm_build( VipsObject *object )
{
VipsForeignSave *save = (VipsForeignSave *) object;
VipsForeignSavePpm *ppm = (VipsForeignSavePpm *) object;
if( VIPS_OBJECT_CLASS( vips_foreign_save_ppm_parent_class )->
build( object ) )
return( -1 );
if( vips__ppm_save( save->ready, ppm->filename, ppm->ascii ) )
return( -1 );
return( 0 );
}
/* Save a bit of typing.
*/
#define UC VIPS_FORMAT_UCHAR
#define C VIPS_FORMAT_CHAR
#define US VIPS_FORMAT_USHORT
#define S VIPS_FORMAT_SHORT
#define UI VIPS_FORMAT_UINT
#define I VIPS_FORMAT_INT
#define F VIPS_FORMAT_FLOAT
#define X VIPS_FORMAT_COMPLEX
#define D VIPS_FORMAT_DOUBLE
#define DX VIPS_FORMAT_DPCOMPLEX
static int bandfmt_ppm[10] = {
/* UC C US S UI I F X D DX */
UC, UC, US, US, UI, UI, F, F, F, F
};
static void
vips_foreign_save_ppm_class_init( VipsForeignSavePpmClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsForeignClass *foreign_class = (VipsForeignClass *) class;
VipsForeignSaveClass *save_class = (VipsForeignSaveClass *) class;
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
object_class->nickname = "ppmsave";
object_class->description = _( "save image to ppm file" );
object_class->build = vips_foreign_save_ppm_build;
foreign_class->suffs = vips__ppm_suffs;
save_class->saveable = VIPS_SAVEABLE_RGB;
save_class->format_table = bandfmt_ppm;
VIPS_ARG_STRING( class, "filename", 1,
_( "Filename" ),
_( "Filename to save to" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsForeignSavePpm, filename ),
NULL );
VIPS_ARG_BOOL( class, "ascii", 10,
_( "ASCII" ),
_( "save as ascii" ),
VIPS_ARGUMENT_OPTIONAL_INPUT,
G_STRUCT_OFFSET( VipsForeignSavePpm, ascii ),
FALSE );
}
static void
vips_foreign_save_ppm_init( VipsForeignSavePpm *ppm )
{
}
/**
* vips_ppmsave:
* @in: image to save
* @filename: file to write to
* @ascii: save as ASCII rather than binary
* @...: %NULL-terminated list of optional named arguments
*
* Write a VIPS image to a file as PPM. It can write 8, 16 or
* 32 bit unsigned integer images, float images, colour or monochrome,
* stored as binary or ASCII.
* Integer images of more than 8 bits can only be stored in ASCII.
*
* When writing float (PFM) images the scale factor is set from the
* "pfm-scale" metadata.
*
* Set @ascii to %TRUE to write as human-readable ASCII. Normally data is
* written in binary.
*
* The storage format is indicated by a filename extension. Use one of .pbm,
* .pgm, .ppm, .pfm.
*
* See also: vips_image_write_file().
*
* Returns: 0 on success, -1 on error.
*/
int
vips_ppmsave( VipsImage *in, const char *filename, ... )
{
va_list ap;
int result;
va_start( ap, filename );
result = vips_call_split( "ppmsave", ap, in, filename );
va_end( ap );
return( result );
}

2
libvips/foreign/vipspng.h
View File

@ -1,4 +1,4 @@
/* common defs for tiff read/write
/* common defs for png read/write
*/
/*

473
libvips/format/im_ppm2vips.c
View File

@ -1,28 +1,7 @@
/* Read a ppm file.
*
* Stephen Chan ... original code
*
* 21/11/00 JC
* - hacked for VIPS
* - reads ppm/pgm/pbm
* - mmaps binary pgm/ppm
* - reads all ascii formats (slowly!)
* 22/11/00 JC
* - oops, ascii read was broken
* - does 16/32 bit ascii now as well
* 24/5/01
* - im_ppm2vips_header() added
* 22/5/04
* - does 16/32 bit binary too
* - tiny fix for missing file close on read error
* 19/8/05
* - use im_raw2vips() for binary read
* 9/9/05
* - tiny cleanups
* 4/2/10
* - gtkdoc
* 1/5/10
* - add PFM (portable float map) support
* 20/12/11
* - just a compat stub
*/
/*
@ -56,437 +35,20 @@
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <vips/vips.h>
#include <vips/internal.h>
/* The largest number/field/whatever we can read.
*/
#define IM_MAX_THING (80)
static void
skip_line( FILE *fp )
{
int ch;
while( (ch = fgetc( fp )) != '\n' )
;
}
static void
skip_white_space( FILE *fp )
{
int ch;
while( isspace( ch = fgetc( fp ) ) )
;
ungetc( ch, fp );
if( ch == '#' ) {
skip_line( fp );
skip_white_space( fp );
}
}
static int
read_int( FILE *fp, int *i )
{
skip_white_space( fp );
if( fscanf( fp, "%d", i ) != 1 ) {
im_error( "im_ppm2vips", "%s", _( "bad int" ) );
return( -1 );
}
return( 0 );
}
static int
read_float( FILE *fp, float *f )
{
skip_white_space( fp );
if( fscanf( fp, "%f", f ) != 1 ) {
im_error( "im_ppm2vips", "%s", _( "bad float" ) );
return( -1 );
}
return( 0 );
}
static int
read_header( FILE *fp, IMAGE *out, int *bits, int *ascii, int *msb_first )
{
int width, height, bands, fmt, type;
int index;
char buf[IM_MAX_THING];
/* ppm types.
*/
static char *magic_names[] = {
"P1", /* pbm ... 1 band 1 bit, ascii */
"P2", /* pgm ... 1 band many bit, ascii */
"P3", /* ppm ... 3 band many bit, ascii */
"P4", /* pbm ... 1 band 1 bit, binary */
"P5", /* pgm ... 1 band 8 bit, binary */
"P6", /* ppm ... 3 band 8 bit, binary */
"PF", /* pfm ... 3 band 32 bit, binary */
"Pf" /* pfm ... 1 band 32 bit, binary */
};
/* Characteristics, indexed by ppm type.
*/
static int lookup_bits[] = {
1, 8, 8, 1, 8, 8, 32, 32
};
static int lookup_bands[] = {
1, 1, 3, 1, 1, 3, 3, 1
};
static int lookup_ascii[] = {
1, 1, 1, 0, 0, 0, 0, 0
};
/* Read in the magic number.
*/
buf[0] = fgetc( fp );
buf[1] = fgetc( fp );
buf[2] = '\0';
for( index = 0; index < IM_NUMBER( magic_names ); index++ )
if( strcmp( magic_names[index], buf ) == 0 )
break;
if( index == IM_NUMBER( magic_names ) ) {
im_error( "im_ppm2vips", "%s", _( "bad magic number" ) );
return( -1 );
}
*bits = lookup_bits[index];
bands = lookup_bands[index];
*ascii = lookup_ascii[index];
/* Default ... can be changed below for PFM images.
*/
*msb_first = 0;
/* Read in size.
*/
if( read_int( fp, &width ) ||
read_int( fp, &height ) )
return( -1 );
/* Read in max value / scale for >1 bit images.
*/
if( *bits > 1 ) {
if( index == 6 || index == 7 ) {
float scale;
if( read_float( fp, &scale ) )
return( -1 );
/* Scale > 0 means big-endian.
*/
*msb_first = scale > 0;
im_meta_set_double( out, "pfm-scale", fabs( scale ) );
}
else {
int max_value;
if( read_int( fp, &max_value ) )
return( -1 );
if( max_value > 255 )
*bits = 16;
if( max_value > 65535 )
*bits = 32;
}
}
/* For binary images, there is always exactly 1 more whitespace
* character before the data starts.
*/
if( !*ascii && !isspace( fgetc( fp ) ) ) {
im_error( "im_ppm2vips", "%s",
_( "not whitespace before start of binary data" ) );
return( -1 );
}
/* Choose a VIPS bandfmt.
*/
switch( *bits ) {
case 1:
case 8:
fmt = IM_BANDFMT_UCHAR;
break;
case 16:
fmt = IM_BANDFMT_USHORT;
break;
case 32:
if( index == 6 || index == 7 )
fmt = IM_BANDFMT_FLOAT;
else
fmt = IM_BANDFMT_UINT;
break;
default:
g_assert( 0 );
}
if( bands == 1 ) {
if( fmt == IM_BANDFMT_USHORT )
type = IM_TYPE_GREY16;
else
type = IM_TYPE_B_W;
}
else {
if( fmt == IM_BANDFMT_USHORT )
type = IM_TYPE_RGB16;
else if( fmt == IM_BANDFMT_UINT )
type = IM_TYPE_RGB;
else
type = IM_TYPE_sRGB;
}
im_initdesc( out, width, height, bands, (*bits == 1) ? 8 : *bits, fmt,
IM_CODING_NONE,
type,
1.0, 1.0,
0, 0 );
return( 0 );
}
/* Read a ppm/pgm file using mmap().
*/
static int
read_mmap( FILE *fp, const char *filename, int msb_first, IMAGE *out )
{
const int header_offset = ftell( fp );
IMAGE *t[2];
if( im_open_local_array( out, t, 2, "im_ppm2vips", "p" ) ||
im_raw2vips( filename, t[0],
out->Xsize, out->Ysize,
IM_IMAGE_SIZEOF_PEL( out ), header_offset ) ||
im_copy_morph( t[0], t[1],
out->Bands, out->BandFmt, out->Coding ) ||
im_copy_native( t[1], out, msb_first ) )
return( -1 );
return( 0 );
}
/* Read an ascii ppm/pgm file.
*/
static int
read_ascii( FILE *fp, IMAGE *out )
{
int x, y;
PEL *buf;
if( im_outcheck( out ) || im_setupout( out ) ||
!(buf = IM_ARRAY( out, IM_IMAGE_SIZEOF_LINE( out ), PEL )) )
return( -1 );
for( y = 0; y < out->Ysize; y++ ) {
for( x = 0; x < out->Xsize * out->Bands; x++ ) {
int val;
if( read_int( fp, &val ) )
return( -1 );
switch( out->BandFmt ) {
case IM_BANDFMT_UCHAR:
buf[x] = IM_CLIP( 0, val, 255 );
break;
case IM_BANDFMT_USHORT:
((unsigned short *) buf)[x] =
IM_CLIP( 0, val, 65535 );
break;
case IM_BANDFMT_UINT:
((unsigned int *) buf)[x] = val;
break;
default:
g_assert( 0 );
}
}
if( im_writeline( y, out, buf ) )
return( -1 );
}
return( 0 );
}
/* Read an ascii 1 bit file.
*/
static int
read_1bit_ascii( FILE *fp, IMAGE *out )
{
int x, y;
PEL *buf;
if( im_outcheck( out ) || im_setupout( out ) ||
!(buf = IM_ARRAY( out, IM_IMAGE_SIZEOF_LINE( out ), PEL )) )
return( -1 );
for( y = 0; y < out->Ysize; y++ ) {
for( x = 0; x < out->Xsize * out->Bands; x++ ) {
int val;
if( read_int( fp, &val ) )
return( -1 );
if( val == 1 )
buf[x] = 0;
else
buf[x] = 255;
}
if( im_writeline( y, out, buf ) )
return( -1 );
}
return( 0 );
}
/* Read a 1 bit binary file.
*/
static int
read_1bit_binary( FILE *fp, IMAGE *out )
{
int x, y, i;
int bits;
PEL *buf;
if( im_outcheck( out ) || im_setupout( out ) ||
!(buf = IM_ARRAY( out, IM_IMAGE_SIZEOF_LINE( out ), PEL )) )
return( -1 );
bits = fgetc( fp );
for( i = 0, y = 0; y < out->Ysize; y++ ) {
for( x = 0; x < out->Xsize * out->Bands; x++, i++ ) {
buf[x] = (bits & 128) ? 255 : 0;
bits <<= 1;
if( (i & 7) == 7 )
bits = fgetc( fp );
}
if( im_writeline( y, out, buf ) )
return( -1 );
}
return( 0 );
}
static int
parse_ppm( FILE *fp, const char *filename, IMAGE *out )
{
int bits;
int ascii;
int msb_first;
if( read_header( fp, out, &bits, &ascii, &msb_first ) )
return( -1 );
/* What sort of read are we doing?
*/
if( !ascii && bits >= 8 )
return( read_mmap( fp, filename, msb_first, out ) );
else if( !ascii && bits == 1 )
return( read_1bit_binary( fp, out ) );
else if( ascii && bits == 1 )
return( read_1bit_ascii( fp, out ) );
else
return( read_ascii( fp, out ) );
}
static int
ppm2vips_header( const char *filename, IMAGE *out )
{
FILE *fp;
int bits;
int ascii;
int msb_first;
if( !(fp = im__file_open_read( filename, NULL, FALSE )) )
return( -1 );
if( read_header( fp, out, &bits, &ascii, &msb_first ) ) {
fclose( fp );
return( -1 );
}
fclose( fp );
return( 0 );
}
/* Can this PPM file be read with a mmap?
*/
static int
isppmmmap( const char *filename )
{
IMAGE *im;
FILE *fp;
int bits;
int ascii;
int msb_first;
if( !(fp = im__file_open_read( filename, NULL, FALSE )) )
return( -1 );
if( !(im = im_open( "temp", "p" )) ) {
fclose( fp );
return( 0 );
}
if( read_header( fp, im, &bits, &ascii, &msb_first ) ) {
im_close( im );
fclose( fp );
return( 0 );
}
im_close( im );
fclose( fp );
return( !ascii && bits >= 8 );
}
/**
* im_ppm2vips:
* @filename: file to load
* @out: image to write to
*
* Read a PPM/PBM/PGM/PFM file into a VIPS image.
* It can read 1, 8, 16 and 32 bit images, colour or monochrome,
* stored in binary or in ASCII. One bit images become 8 bit VIPS images,
* with 0 and 255 for 0 and 1.
*
* PFM images have the scale factor attached as "pfm-scale".
*
* See also: #VipsFormat, im_vips2ppm(), im_meta_get_double()
*
* Returns: 0 on success, -1 on error.
*/
int
im_ppm2vips( const char *filename, IMAGE *out )
{
FILE *fp;
VipsImage *t;
/* Note that we open in binary mode. If this is a binary PPM, we need
* to be able to mmap it.
*/
if( !(fp = im__file_open_read( filename, NULL, FALSE )) )
return( -1 );
if( parse_ppm( fp, filename, out ) ) {
fclose( fp );
if( vips_ppmload( filename, &t, NULL ) )
return( -1 );
if( vips_image_write( t, out ) ) {
g_object_unref( t );
return( -1 );
}
fclose( fp );
g_object_unref( t );
return( 0 );
}
@ -494,27 +56,13 @@ im_ppm2vips( const char *filename, IMAGE *out )
static int
isppm( const char *filename )
{
unsigned char buf[2];
if( im__get_bytes( filename, buf, 2 ) )
if( buf[0] == 'P' && (buf[1] >= '1' || buf[1] <= '6') )
return( 1 );
return( 0 );
return( vips_foreign_is_a( "ppmload", filename ) );
}
/* ppm flags function.
*/
static VipsFormatFlags
ppm_flags( const char *filename )
{
VipsFormatFlags flags;
flags = 0;
if( isppmmmap( filename ) )
flags |= VIPS_FORMAT_PARTIAL;
return( flags );
return( vips_foreign_flags( "ppmload", filename ) );
}
static const char *ppm_suffs[] = { ".ppm", ".pgm", ".pbm", ".pfm", NULL };
@ -534,7 +82,6 @@ vips_format_ppm_class_init( VipsFormatPpmClass *class )
object_class->description = _( "PPM/PBM/PNM/PFM" );
format_class->is_a = isppm;
format_class->header = ppm2vips_header;
format_class->load = im_ppm2vips;
format_class->save = im_vips2ppm;
format_class->get_flags = ppm_flags;

244
libvips/format/im_vips2ppm.c
View File

@ -1,16 +1,7 @@
/* Write a ppm file.
*
* 28/11/03 JC
* - better no-overshoot on tile loop
* 9/9/05
* - tiny cleanups
* 3/11/07
* - use im_wbuffer() for bg writes
* 4/2/10
* - gtkdoc
* - cleanups
* 1/5/10
* - add PFM (portable float map) support
* 20/12/11
* - just a compat stub
*/
/*
@ -44,217 +35,13 @@
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <limits.h>
#include <vips/vips.h>
typedef int (*write_fn)( IMAGE *in, FILE *fp, PEL *p );
/* What we track during a PPM write.
*/
typedef struct {
IMAGE *in;
FILE *fp;
char *name;
write_fn fn;
} Write;
static void
write_destroy( Write *write )
{
IM_FREEF( fclose, write->fp );
IM_FREE( write->name );
im_free( write );
}
static Write *
write_new( IMAGE *in, const char *name )
{
Write *write;
if( !(write = IM_NEW( NULL, Write )) )
return( NULL );
write->in = in;
write->name = im_strdup( NULL, name );
write->fp = im__file_open_write( name, FALSE );
if( !write->name || !write->fp ) {
write_destroy( write );
return( NULL );
}
return( write );
}
static int
write_ppm_line_ascii( IMAGE *in, FILE *fp, PEL *p )
{
const int sk = IM_IMAGE_SIZEOF_PEL( in );
int x, k;
for( x = 0; x < in->Xsize; x++ ) {
for( k = 0; k < in->Bands; k++ ) {
switch( in->BandFmt ) {
case IM_BANDFMT_UCHAR:
fprintf( fp, "%d ", p[k] );
break;
case IM_BANDFMT_USHORT:
fprintf( fp, "%d ", ((unsigned short *) p)[k] );
break;
case IM_BANDFMT_UINT:
fprintf( fp, "%d ", ((unsigned int *) p)[k] );
break;
default:
g_assert( 0 );
}
}
fprintf( fp, " " );
p += sk;
}
if( !fprintf( fp, "\n" ) ) {
im_error( "im_vips2ppm",
"%s", _( "write error ... disc full?" ) );
return( -1 );
}
return( 0 );
}
static int
write_ppm_line_binary( IMAGE *in, FILE *fp, PEL *p )
{
if( !fwrite( p, IM_IMAGE_SIZEOF_LINE( in ), 1, fp ) ) {
im_error( "im_vips2ppm",
"%s", _( "write error ... disc full?" ) );
return( -1 );
}
return( 0 );
}
static int
write_ppm_block( REGION *region, Rect *area, void *a )
{
Write *write = (Write *) a;
int i;
for( i = 0; i < area->height; i++ ) {
PEL *p = (PEL *) IM_REGION_ADDR( region, 0, area->top + i );
if( write->fn( write->in, write->fp, p ) )
return( -1 );
}
return( 0 );
}
static int
write_ppm( Write *write, int ascii )
{
IMAGE *in = write->in;
char *magic;
time_t timebuf;
if( in->BandFmt == IM_BANDFMT_FLOAT && in->Bands == 3 )
magic = "PF";
else if( in->BandFmt == IM_BANDFMT_FLOAT && in->Bands == 1 )
magic = "Pf";
else if( in->Bands == 1 && ascii )
magic = "P2";
else if( in->Bands == 1 && !ascii )
magic = "P5";
else if( in->Bands == 3 && ascii )
magic = "P3";
else if( in->Bands == 3 && !ascii )
magic = "P6";
else
g_assert( 0 );
fprintf( write->fp, "%s\n", magic );
time( &timebuf );
fprintf( write->fp, "#im_vips2ppm - %s\n", ctime( &timebuf ) );
fprintf( write->fp, "%d %d\n", in->Xsize, in->Ysize );
switch( in->BandFmt ) {
case IM_BANDFMT_UCHAR:
fprintf( write->fp, "%d\n", UCHAR_MAX );
break;
case IM_BANDFMT_USHORT:
fprintf( write->fp, "%d\n", USHRT_MAX );
break;
case IM_BANDFMT_UINT:
fprintf( write->fp, "%d\n", UINT_MAX );
break;
case IM_BANDFMT_FLOAT:
{
double scale;
if( im_meta_get_double( in, "pfm-scale", &scale ) )
scale = 1;
if( !im_amiMSBfirst() )
scale *= -1;
fprintf( write->fp, "%g\n", scale );
}
break;
default:
g_assert( 0 );
}
write->fn = ascii ? write_ppm_line_ascii : write_ppm_line_binary;
if( vips_sink_disc( write->in, write_ppm_block, write ) )
return( -1 );
return( 0 );
}
/**
* im_vips2ppm:
* @in: image to save
* @filename: file to write to
*
* Write a VIPS image to a file as PPM. It can write 8, 16 or
* 32 bit unsigned integer images, float images, colour or monochrome,
* stored as binary or ASCII.
* Integer images of more than 8 bits can only be stored in ASCII.
*
* When writing float (PFM) images the scale factor is set from the
* "pfm-scale" metadata.
*
* The storage format is indicated by a filename extension, for example:
*
* |[
* im_vips2ppm( im, "fred.ppm:ascii" )
* ]|
*
* will write to "fred.ppm" in ascii format. The default is binary.
*
* See also: #VipsFormat, im_ppm2vips(), im_meta_set_double().
*
* Returns: 0 on success, -1 on error.
*/
int
im_vips2ppm( IMAGE *in, const char *filename )
{
Write *write;
int ascii;
char name[FILENAME_MAX];
char mode[FILENAME_MAX];
@ -279,30 +66,5 @@ im_vips2ppm( IMAGE *in, const char *filename )
}
}
if( im_check_uintorf( "im_vips2ppm", in ) ||
im_check_bands_1or3( "im_vips2ppm", in ) ||
im_check_uncoded( "im_vips2ppm", in ) ||
im_pincheck( in ) )
return( -1 );
/* We can only write >8 bit binary images in float.
*/
if( im_bits_of_fmt( in->BandFmt ) > 8 &&
!ascii &&
in->BandFmt != IM_BANDFMT_FLOAT ) {
im_error( "im_vips2ppm",
"%s", _( "binary >8 bit images must be float" ) );
return( -1 );
}
if( !(write = write_new( in, name )) )
return( -1 );
if( write_ppm( write, ascii ) ) {
write_destroy( write );
return( -1 );
}
write_destroy( write );
return( 0 );
return( vips_ppmsave( in, filename, "ascii", ascii, NULL ) );
}

5
libvips/include/vips/foreign.h
View File

@ -356,6 +356,11 @@ int vips_pngsave( VipsImage *in, const char *filename, ... )
int vips_pngsave_buffer( VipsImage *in, void **buf, size_t *len, ... )
__attribute__((sentinel));
int vips_ppmload( const char *filename, VipsImage **out, ... )
__attribute__((sentinel));
int vips_ppmsave( VipsImage *in, const char *filename, ... )
__attribute__((sentinel));
#ifdef __cplusplus
}
#endif /*__cplusplus*/