* copyright (C) 1999 by Willem van Schaik <willem@schaik.com>
*
* version 1.0 - 1999.10.15 - First version.
+ * version 1.1 - 2015.07.29 - Fixed leaks (Glenn Randers-Pehrson)
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
char width_token[16];
char height_token[16];
char maxval_token[16];
- volatile int color_type;
+ volatile int color_type=1;
unsigned long ul_width=0, ul_alpha_width=0;
unsigned long ul_height=0, ul_alpha_height=0;
unsigned long ul_maxval=0;
- volatile png_uint_32 width, height;
- volatile png_uint_32 alpha_width, alpha_height;
+ volatile png_uint_32 width=0, height=0;
+ volatile png_uint_32 alpha_width=0, alpha_height=0;
png_uint_32 maxval;
volatile int bit_depth = 0;
- int channels;
+ int channels=0;
int alpha_depth = 0;
- int alpha_present;
+ int alpha_present=0;
int row, col;
BOOL raw, alpha_raw = FALSE;
#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
channels = 3;
else if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
channels = 4;
+#if 0
else
- channels = 0; /* should not happen */
+ channels = 0; /* cannot happen */
+#endif
alpha_present = (channels - 1) % 2;
} /* end for row */
/* prepare the standard PNG structures */
- png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ png_ptr = png_create_write_struct (png_get_libpng_ver(NULL), NULL, NULL,
+ NULL);
if (!png_ptr)
{
+ free (png_pixels);
+ png_pixels = NULL;
return FALSE;
}
info_ptr = png_create_info_struct (png_ptr);
if (!info_ptr)
{
png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
+ free (png_pixels);
+ png_pixels = NULL;
return FALSE;
}
/* setjmp() must be called in every function that calls a PNG-reading libpng function */
if (setjmp (png_jmpbuf(png_ptr)))
{
- png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
+ png_destroy_write_struct (&png_ptr, &info_ptr);
+ free (png_pixels);
+ png_pixels = NULL;
return FALSE;
}
if ((row_pointers = (png_byte **)
malloc (height * sizeof (png_bytep))) == NULL)
{
- png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
+ png_destroy_write_struct (&png_ptr, &info_ptr);
+ free (png_pixels);
+ png_pixels = NULL;
return FALSE;
}
}
png_write_end (png_ptr, info_ptr);
/* clean up after the write, and free any memory allocated */
- png_destroy_write_struct (&png_ptr, (png_infopp) NULL);
+ png_destroy_write_struct (&png_ptr, &info_ptr);
if (row_pointers != (unsigned char**) NULL)
free (row_pointers);