GRASS GIS 8 Programmer's Manual
8.5.0dev(2024)-54f2068759
pngdriver/read.c
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/*!
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\file lib/pngdriver/read.c
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\brief GRASS png display driver - read image (lower level functions)
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(C) 2007-2014 by Glynn Clements and the GRASS Development Team
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This program is free software under the GNU General Public License
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(>=v2). Read the file COPYING that comes with GRASS for details.
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\author Glynn Clements
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <
grass/config.h
>
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#include <
grass/gis.h
>
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#include "
pngdriver.h
"
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void
read_image
(
void
)
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{
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char
*p =
png
.
file_name
+ strlen(
png
.
file_name
) - 4;
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if
(
G_strcasecmp
(p,
".ppm"
) == 0) {
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read_ppm
();
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if
(
png
.
has_alpha
)
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read_pgm
();
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}
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else
if
(
G_strcasecmp
(p,
".bmp"
) == 0)
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read_bmp
();
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#ifdef HAVE_PNG_H
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else
if
(
G_strcasecmp
(p,
".png"
) == 0)
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read_png
();
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#endif
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else
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G_fatal_error
(
"read_image: unknown file type: %s"
, p);
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png
.
modified
= 0;
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}
config.h
G_fatal_error
void void void void G_fatal_error(const char *,...) __attribute__((format(printf
G_strcasecmp
int int G_strcasecmp(const char *, const char *)
String compare ignoring case (upper or lower)
Definition:
strings.c:47
gis.h
png
struct png_state png
Definition:
pngdriver/graph_set.c:32
read_image
void read_image(void)
Definition:
pngdriver/read.c:22
pngdriver.h
GRASS png display driver - header file.
read_bmp
void read_bmp(void)
Definition:
pngdriver/read_bmp.c:79
read_ppm
void read_ppm(void)
Definition:
pngdriver/read_ppm.c:21
read_png
void read_png(void)
Definition:
read_png.c:45
read_pgm
void read_pgm(void)
Definition:
pngdriver/read_ppm.c:68
png_state::file_name
char * file_name
Definition:
pngdriver.h:32
png_state::has_alpha
int has_alpha
Definition:
pngdriver.h:35
png_state::modified
int modified
Definition:
pngdriver.h:46
lib
pngdriver
read.c
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