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[libpng16] Revised contrib/pngminus/pnm2png.c to avoid warnings

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when png_uint_32 and unsigned long are of different sizes.
This commit is contained in:
Glenn Randers-Pehrson
2011-12-29 10:24:50 -06:00
parent 0522f269e0
commit 04ab33560f
4 changed files with 43 additions and 20 deletions
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1
contrib/pngminus/png2pnm.c
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@@ -18,6 +18,7 @@
#include <mem.h>
#include <fcntl.h>
#endif
#include <zlib.h>
#ifndef BOOL
#define BOOL unsigned char

36
contrib/pngminus/pnm2png.c
View File

@@ -18,6 +18,7 @@
#include <mem.h>
#include <fcntl.h>
#endif
#include <zlib.h>
#ifndef BOOL
#define BOOL unsigned char
@@ -197,6 +198,9 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
char height_token[16];
char maxval_token[16];
int color_type;
unsigned long ul_width, ul_alpha_width;
unsigned long ul_height, ul_alpha_height;
unsigned long ul_maxval;
png_uint_32 width, alpha_width;
png_uint_32 height, alpha_height;
png_uint_32 maxval;
@@ -227,11 +231,15 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
raw = (type_token[1] == '5');
color_type = PNG_COLOR_TYPE_GRAY;
get_token(pnm_file, width_token);
sscanf (width_token, "%lu", &width);
sscanf (width_token, "%lu", &ul_width);
width = (png_uint_32) ul_width;
get_token(pnm_file, height_token);
sscanf (height_token, "%lu", &height);
sscanf (height_token, "%lu", &ul_height);
height = (png_uint_32) ul_height;
get_token(pnm_file, maxval_token);
sscanf (maxval_token, "%lu", &maxval);
sscanf (maxval_token, "%lu", &ul_maxval);
maxval = (png_uint_32) ul_maxval;
if (maxval <= 1)
bit_depth = 1;
else if (maxval <= 3)
@@ -248,11 +256,14 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
raw = (type_token[1] == '6');
color_type = PNG_COLOR_TYPE_RGB;
get_token(pnm_file, width_token);
sscanf (width_token, "%lu", &width);
sscanf (width_token, "%lu", &ul_width);
width = (png_uint_32) ul_width;
get_token(pnm_file, height_token);
sscanf (height_token, "%lu", &height);
sscanf (height_token, "%lu", &ul_height);
height = (png_uint_32) ul_height;
get_token(pnm_file, maxval_token);
sscanf (maxval_token, "%lu", &maxval);
sscanf (maxval_token, "%lu", &ul_maxval);
maxval = (png_uint_32) ul_maxval;
if (maxval <= 1)
bit_depth = 1;
else if (maxval <= 3)
@@ -287,15 +298,18 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
{
alpha_raw = (type_token[1] == '5');
get_token(alpha_file, width_token);
sscanf (width_token, "%lu", &alpha_width);
sscanf (width_token, "%lu", &ul_alpha_width);
alpha_width=(png_uint_32) ul_alpha_width;
if (alpha_width != width)
return FALSE;
get_token(alpha_file, height_token);
sscanf (height_token, "%lu", &alpha_height);
sscanf (height_token, "%lu", &ul_alpha_height);
alpha_height = (png_uint_32) ul_alpha_height;
if (alpha_height != height)
return FALSE;
get_token(alpha_file, maxval_token);
sscanf (maxval_token, "%lu", &maxval);
sscanf (maxval_token, "%lu", &ul_maxval);
maxval = (png_uint_32) ul_maxval;
if (maxval <= 1)
alpha_depth = 1;
else if (maxval <= 3)
@@ -510,6 +524,7 @@ png_uint_32 get_value (FILE *pnm_file, int depth)
{
static png_uint_32 mask = 0;
png_byte token[16];
unsigned long ulret_value;
png_uint_32 ret_value;
int i = 0;
@@ -518,7 +533,8 @@ png_uint_32 get_value (FILE *pnm_file, int depth)
mask = (mask << 1) | 0x01;
get_token (pnm_file, (char *) token);
sscanf ((const char *) token, "%lu", &ret_value);
sscanf ((const char *) token, "%lu", &ulret_value);
ret_value = (png_uint_32) ulret_value;
ret_value &= mask;