src/png/pngerror.c


/* pngerror.c - stub functions for i/o and memory allocation
 *
 * Last changed in libpng 1.2.37 [June 4, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
 *
 * This code is released under the libpng license.
 * For conditions of distribution and use, see the disclaimer
 * and license in png.h
 *
 * This file provides a location for all error handling.  Users who
 * need special error handling are expected to write replacement functions
 * and use png_set_error_fn() to use those functions.  See the instructions
 * at each function.
 */

#define PNG_INTERNAL
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)

static void /* PRIVATE */
png_default_error PNGARG((png_structp png_ptr,
  png_const_charp error_message));
#ifndef PNG_NO_WARNINGS
static void /* PRIVATE */
png_default_warning PNGARG((png_structp png_ptr,
  png_const_charp warning_message));
#endif /* PNG_NO_WARNINGS */

/* This function is called whenever there is a fatal error.  This function
 * should not be changed.  If there is a need to handle errors differently,
 * you should supply a replacement error function and use png_set_error_fn()
 * to replace the error function at run-time.
 */
#ifndef PNG_NO_ERROR_TEXT
void PNGAPI
png_error(png_structp png_ptr, png_const_charp error_message)
{
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
   char msg[16];
   if (png_ptr != NULL)
   {
     if (png_ptr->flags&
       (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
     {
       if (*error_message == '#')
       {
           /* Strip "#nnnn " from beginning of error message. */
           int offset;
           for (offset = 1; offset<15; offset++)
              if (error_message[offset] == ' ')
                  break;
           if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
           {
              int i;
              for (i = 0; i < offset - 1; i++)
                 msg[i] = error_message[i + 1];
              msg[i - 1] = '\0';
              error_message = msg;
           }
           else
              error_message += offset;
       }
       else
       {
           if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
           {
              msg[0] = '0';
              msg[1] = '\0';
              error_message = msg;
           }
       }
     }
   }
#endif
   if (png_ptr != NULL && png_ptr->error_fn != NULL)
      (*(png_ptr->error_fn))(png_ptr, error_message);

   /* If the custom handler doesn't exist, or if it returns,
      use the default handler, which will not return. */
   png_default_error(png_ptr, error_message);
}
#else
void PNGAPI
png_err(png_structp png_ptr)
{
   if (png_ptr != NULL && png_ptr->error_fn != NULL)
      (*(png_ptr->error_fn))(png_ptr, '\0');

   /* If the custom handler doesn't exist, or if it returns,
      use the default handler, which will not return. */
   png_default_error(png_ptr, '\0');
}
#endif /* PNG_NO_ERROR_TEXT */

#ifndef PNG_NO_WARNINGS
/* This function is called whenever there is a non-fatal error.  This function
 * should not be changed.  If there is a need to handle warnings differently,
 * you should supply a replacement warning function and use
 * png_set_error_fn() to replace the warning function at run-time.
 */
void PNGAPI
png_warning(png_structp png_ptr, png_const_charp warning_message)
{
   int offset = 0;
   if (png_ptr != NULL)
   {
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
   if (png_ptr->flags&
     (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
#endif
     {
       if (*warning_message == '#')
       {
           for (offset = 1; offset < 15; offset++)
              if (warning_message[offset] == ' ')
                  break;
       }
     }
   }
   if (png_ptr != NULL && png_ptr->warning_fn != NULL)
      (*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
   else
      png_default_warning(png_ptr, warning_message + offset);
}
#endif /* PNG_NO_WARNINGS */


/* These utilities are used internally to build an error message that relates
 * to the current chunk.  The chunk name comes from png_ptr->chunk_name,
 * this is used to prefix the message.  The message is limited in length
 * to 63 bytes, the name characters are output as hex digits wrapped in []
 * if the character is invalid.
 */
#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
static PNG_CONST char png_digit[16] = {
   '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
   'A', 'B', 'C', 'D', 'E', 'F'
};

#define PNG_MAX_ERROR_TEXT 64

#if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT)
static void /* PRIVATE */
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
   error_message)
{
   int iout = 0, iin = 0;

   while (iin < 4)
   {
      int c = png_ptr->chunk_name[iin++];
      if (isnonalpha(c))
      {
         buffer[iout++] = '[';
         buffer[iout++] = png_digit[(c & 0xf0) >> 4];
         buffer[iout++] = png_digit[c & 0x0f];
         buffer[iout++] = ']';
      }
      else
      {
         buffer[iout++] = (png_byte)c;
      }
   }

   if (error_message == NULL)
      buffer[iout] = '\0';
   else
   {
      buffer[iout++] = ':';
      buffer[iout++] = ' ';
      png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT);
      buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0';
   }
}

#ifdef PNG_READ_SUPPORTED
void PNGAPI
png_chunk_error(png_structp png_ptr, png_const_charp error_message)
{
   char msg[18+PNG_MAX_ERROR_TEXT];
   if (png_ptr == NULL)
     png_error(png_ptr, error_message);
   else
   {
     png_format_buffer(png_ptr, msg, error_message);
     png_error(png_ptr, msg);
   }
}
#endif /* PNG_READ_SUPPORTED */
#endif /* !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) */

#ifndef PNG_NO_WARNINGS
void PNGAPI
png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
{
   char msg[18+PNG_MAX_ERROR_TEXT];
   if (png_ptr == NULL)
     png_warning(png_ptr, warning_message);
   else
   {
     png_format_buffer(png_ptr, msg, warning_message);
     png_warning(png_ptr, msg);
   }
}
#endif /* PNG_NO_WARNINGS */


/* This is the default error handling function.  Note that replacements for
 * this function MUST NOT RETURN, or the program will likely crash.  This
 * function is used by default, or if the program supplies NULL for the
 * error function pointer in png_set_error_fn().
 */
static void /* PRIVATE */
png_default_error(png_structp png_ptr, png_const_charp error_message)
{
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
   if (*error_message == '#')
   {
     /* Strip "#nnnn " from beginning of error message. */
     int offset;
     char error_number[16];
     for (offset = 0; offset<15; offset++)
     {
         error_number[offset] = error_message[offset + 1];
         if (error_message[offset] == ' ')
             break;
     }
     if ((offset > 1) && (offset < 15))
     {
       error_number[offset - 1] = '\0';
       fprintf(stderr, "libpng error no. %s: %s",
          error_number, error_message + offset + 1);
       fprintf(stderr, PNG_STRING_NEWLINE);
     }
     else
     {
       fprintf(stderr, "libpng error: %s, offset=%d",
          error_message, offset);
       fprintf(stderr, PNG_STRING_NEWLINE);
     }
   }
   else
#endif
   {
      fprintf(stderr, "libpng error: %s", error_message);
      fprintf(stderr, PNG_STRING_NEWLINE);
   }
#endif

#ifdef PNG_SETJMP_SUPPORTED
   if (png_ptr)
   {
#  ifdef USE_FAR_KEYWORD
   {
      jmp_buf jmpbuf;
      png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
      longjmp(jmpbuf, 1);
   }
#  else
   longjmp(png_ptr->jmpbuf, 1);
#  endif
   }
#else
   PNG_ABORT();
#endif
#ifdef PNG_NO_CONSOLE_IO
   error_message = error_message; /* Make compiler happy */
#endif
}

#ifndef PNG_NO_WARNINGS
/* This function is called when there is a warning, but the library thinks
 * it can continue anyway.  Replacement functions don't have to do anything
 * here if you don't want them to.  In the default configuration, png_ptr is
 * not used, but it is passed in case it may be useful.
 */
static void /* PRIVATE */
png_default_warning(png_structp png_ptr, png_const_charp warning_message)
{
#ifndef PNG_NO_CONSOLE_IO
#  ifdef PNG_ERROR_NUMBERS_SUPPORTED
   if (*warning_message == '#')
   {
     int offset;
     char warning_number[16];
     for (offset = 0; offset < 15; offset++)
     {
        warning_number[offset] = warning_message[offset + 1];
        if (warning_message[offset] == ' ')
            break;
     }
     if ((offset > 1) && (offset < 15))
     {
       warning_number[offset + 1] = '\0';
       fprintf(stderr, "libpng warning no. %s: %s",
          warning_number, warning_message + offset);
       fprintf(stderr, PNG_STRING_NEWLINE);
     }
     else
     {
       fprintf(stderr, "libpng warning: %s",
          warning_message);
       fprintf(stderr, PNG_STRING_NEWLINE);
     }
   }
   else
#  endif
   {
     fprintf(stderr, "libpng warning: %s", warning_message);
     fprintf(stderr, PNG_STRING_NEWLINE);
   }
#else
   warning_message = warning_message; /* Make compiler happy */
#endif
   png_ptr = png_ptr; /* Make compiler happy */
}
#endif /* PNG_NO_WARNINGS */

/* This function is called when the application wants to use another method
 * of handling errors and warnings.  Note that the error function MUST NOT
 * return to the calling routine or serious problems will occur.  The return
 * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
 */
void PNGAPI
png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
   png_error_ptr error_fn, png_error_ptr warning_fn)
{
   if (png_ptr == NULL)
      return;
   png_ptr->error_ptr = error_ptr;
   png_ptr->error_fn = error_fn;
   png_ptr->warning_fn = warning_fn;
}


/* This function returns a pointer to the error_ptr associated with the user
 * functions.  The application should free any memory associated with this
 * pointer before png_write_destroy and png_read_destroy are called.
 */
png_voidp PNGAPI
png_get_error_ptr(png_structp png_ptr)
{
   if (png_ptr == NULL)
      return NULL;
   return ((png_voidp)png_ptr->error_ptr);
}


#ifdef PNG_ERROR_NUMBERS_SUPPORTED
void PNGAPI
png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
{
   if (png_ptr != NULL)
   {
     png_ptr->flags &=
       ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
   }
}
#endif
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
1	william	31
2			/* pngerror.c - stub functions for i/o and memory allocation
3			*
4			* Last changed in libpng 1.2.37 [June 4, 2009]
5			* Copyright (c) 1998-2009 Glenn Randers-Pehrson
6			* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7			* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
8			*
9			* This code is released under the libpng license.
10			* For conditions of distribution and use, see the disclaimer
11			* and license in png.h
12			*
13			* This file provides a location for all error handling. Users who
14			* need special error handling are expected to write replacement functions
15			* and use png_set_error_fn() to use those functions. See the instructions
16			* at each function.
17			*/
18
19			#define PNG_INTERNAL
20			#include "png.h"
21			#if defined(PNG_READ_SUPPORTED) \|\| defined(PNG_WRITE_SUPPORTED)
22
23			static void /* PRIVATE */
24			png_default_error PNGARG((png_structp png_ptr,
25			png_const_charp error_message));
26			#ifndef PNG_NO_WARNINGS
27			static void /* PRIVATE */
28			png_default_warning PNGARG((png_structp png_ptr,
29			png_const_charp warning_message));
30			#endif /* PNG_NO_WARNINGS */
31
32			/* This function is called whenever there is a fatal error. This function
33			* should not be changed. If there is a need to handle errors differently,
34			* you should supply a replacement error function and use png_set_error_fn()
35			* to replace the error function at run-time.
36			*/
37			#ifndef PNG_NO_ERROR_TEXT
38			void PNGAPI
39			png_error(png_structp png_ptr, png_const_charp error_message)
40			{
41			#ifdef PNG_ERROR_NUMBERS_SUPPORTED
42			char msg[16];
43			if (png_ptr != NULL)
44			{
45			if (png_ptr->flags&
46			(PNG_FLAG_STRIP_ERROR_NUMBERS\|PNG_FLAG_STRIP_ERROR_TEXT))
47			{
48			if (*error_message == '#')
49			{
50			/* Strip "#nnnn " from beginning of error message. */
51			int offset;
52			for (offset = 1; offset<15; offset++)
53			if (error_message[offset] == ' ')
54			break;
55			if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
56			{
57			int i;
58			for (i = 0; i < offset - 1; i++)
59			msg[i] = error_message[i + 1];
60			msg[i - 1] = '\0';
61			error_message = msg;
62			}
63			else
64			error_message += offset;
65			}
66			else
67			{
68			if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
69			{
70			msg[0] = '0';
71			msg[1] = '\0';
72			error_message = msg;
73			}
74			}
75			}
76			}
77			#endif
78			if (png_ptr != NULL && png_ptr->error_fn != NULL)
79			(*(png_ptr->error_fn))(png_ptr, error_message);
80
81			/* If the custom handler doesn't exist, or if it returns,
82			use the default handler, which will not return. */
83			png_default_error(png_ptr, error_message);
84			}
85			#else
86			void PNGAPI
87			png_err(png_structp png_ptr)
88			{
89			if (png_ptr != NULL && png_ptr->error_fn != NULL)
90			(*(png_ptr->error_fn))(png_ptr, '\0');
91
92			/* If the custom handler doesn't exist, or if it returns,
93			use the default handler, which will not return. */
94			png_default_error(png_ptr, '\0');
95			}
96			#endif /* PNG_NO_ERROR_TEXT */
97
98			#ifndef PNG_NO_WARNINGS
99			/* This function is called whenever there is a non-fatal error. This function
100			* should not be changed. If there is a need to handle warnings differently,
101			* you should supply a replacement warning function and use
102			* png_set_error_fn() to replace the warning function at run-time.
103			*/
104			void PNGAPI
105			png_warning(png_structp png_ptr, png_const_charp warning_message)
106			{
107			int offset = 0;
108			if (png_ptr != NULL)
109			{
110			#ifdef PNG_ERROR_NUMBERS_SUPPORTED
111			if (png_ptr->flags&
112			(PNG_FLAG_STRIP_ERROR_NUMBERS\|PNG_FLAG_STRIP_ERROR_TEXT))
113			#endif
114			{
115			if (*warning_message == '#')
116			{
117			for (offset = 1; offset < 15; offset++)
118			if (warning_message[offset] == ' ')
119			break;
120			}
121			}
122			}
123			if (png_ptr != NULL && png_ptr->warning_fn != NULL)
124			(*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
125			else
126			png_default_warning(png_ptr, warning_message + offset);
127			}
128			#endif /* PNG_NO_WARNINGS */
129
130
131			/* These utilities are used internally to build an error message that relates
132			* to the current chunk. The chunk name comes from png_ptr->chunk_name,
133			* this is used to prefix the message. The message is limited in length
134			* to 63 bytes, the name characters are output as hex digits wrapped in []
135			* if the character is invalid.
136			*/
137			#define isnonalpha(c) ((c) < 65 \|\| (c) > 122 \|\| ((c) > 90 && (c) < 97))
138			static PNG_CONST char png_digit[16] = {
139			'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
140			'A', 'B', 'C', 'D', 'E', 'F'
141			};
142
143			#define PNG_MAX_ERROR_TEXT 64
144
145			#if !defined(PNG_NO_WARNINGS) \|\| !defined(PNG_NO_ERROR_TEXT)
146			static void /* PRIVATE */
147			png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
148			error_message)
149			{
150			int iout = 0, iin = 0;
151
152			while (iin < 4)
153			{
154			int c = png_ptr->chunk_name[iin++];
155			if (isnonalpha(c))
156			{
157			buffer[iout++] = '[';
158			buffer[iout++] = png_digit[(c & 0xf0) >> 4];
159			buffer[iout++] = png_digit[c & 0x0f];
160			buffer[iout++] = ']';
161			}
162			else
163			{
164			buffer[iout++] = (png_byte)c;
165			}
166			}
167
168			if (error_message == NULL)
169			buffer[iout] = '\0';
170			else
171			{
172			buffer[iout++] = ':';
173			buffer[iout++] = ' ';
174			png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT);
175			buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0';
176			}
177			}
178
179			#ifdef PNG_READ_SUPPORTED
180			void PNGAPI
181			png_chunk_error(png_structp png_ptr, png_const_charp error_message)
182			{
183			char msg[18+PNG_MAX_ERROR_TEXT];
184			if (png_ptr == NULL)
185			png_error(png_ptr, error_message);
186			else
187			{
188			png_format_buffer(png_ptr, msg, error_message);
189			png_error(png_ptr, msg);
190			}
191			}
192			#endif /* PNG_READ_SUPPORTED */
193			#endif /* !defined(PNG_NO_WARNINGS) \|\| !defined(PNG_NO_ERROR_TEXT) */
194
195			#ifndef PNG_NO_WARNINGS
196			void PNGAPI
197			png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
198			{
199			char msg[18+PNG_MAX_ERROR_TEXT];
200			if (png_ptr == NULL)
201			png_warning(png_ptr, warning_message);
202			else
203			{
204			png_format_buffer(png_ptr, msg, warning_message);
205			png_warning(png_ptr, msg);
206			}
207			}
208			#endif /* PNG_NO_WARNINGS */
209
210
211			/* This is the default error handling function. Note that replacements for
212			* this function MUST NOT RETURN, or the program will likely crash. This
213			* function is used by default, or if the program supplies NULL for the
214			* error function pointer in png_set_error_fn().
215			*/
216			static void /* PRIVATE */
217			png_default_error(png_structp png_ptr, png_const_charp error_message)
218			{
219			#ifndef PNG_NO_CONSOLE_IO
220			#ifdef PNG_ERROR_NUMBERS_SUPPORTED
221			if (*error_message == '#')
222			{
223			/* Strip "#nnnn " from beginning of error message. */
224			int offset;
225			char error_number[16];
226			for (offset = 0; offset<15; offset++)
227			{
228			error_number[offset] = error_message[offset + 1];
229			if (error_message[offset] == ' ')
230			break;
231			}
232			if ((offset > 1) && (offset < 15))
233			{
234			error_number[offset - 1] = '\0';
235			fprintf(stderr, "libpng error no. %s: %s",
236			error_number, error_message + offset + 1);
237			fprintf(stderr, PNG_STRING_NEWLINE);
238			}
239			else
240			{
241			fprintf(stderr, "libpng error: %s, offset=%d",
242			error_message, offset);
243			fprintf(stderr, PNG_STRING_NEWLINE);
244			}
245			}
246			else
247			#endif
248			{
249			fprintf(stderr, "libpng error: %s", error_message);
250			fprintf(stderr, PNG_STRING_NEWLINE);
251			}
252			#endif
253
254			#ifdef PNG_SETJMP_SUPPORTED
255			if (png_ptr)
256			{
257			# ifdef USE_FAR_KEYWORD
258			{
259			jmp_buf jmpbuf;
260			png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
261			longjmp(jmpbuf, 1);
262			}
263			# else
264			longjmp(png_ptr->jmpbuf, 1);
265			# endif
266			}
267			#else
268			PNG_ABORT();
269			#endif
270			#ifdef PNG_NO_CONSOLE_IO
271			error_message = error_message; /* Make compiler happy */
272			#endif
273			}
274
275			#ifndef PNG_NO_WARNINGS
276			/* This function is called when there is a warning, but the library thinks
277			* it can continue anyway. Replacement functions don't have to do anything
278			* here if you don't want them to. In the default configuration, png_ptr is
279			* not used, but it is passed in case it may be useful.
280			*/
281			static void /* PRIVATE */
282			png_default_warning(png_structp png_ptr, png_const_charp warning_message)
283			{
284			#ifndef PNG_NO_CONSOLE_IO
285			# ifdef PNG_ERROR_NUMBERS_SUPPORTED
286			if (*warning_message == '#')
287			{
288			int offset;
289			char warning_number[16];
290			for (offset = 0; offset < 15; offset++)
291			{
292			warning_number[offset] = warning_message[offset + 1];
293			if (warning_message[offset] == ' ')
294			break;
295			}
296			if ((offset > 1) && (offset < 15))
297			{
298			warning_number[offset + 1] = '\0';
299			fprintf(stderr, "libpng warning no. %s: %s",
300			warning_number, warning_message + offset);
301			fprintf(stderr, PNG_STRING_NEWLINE);
302			}
303			else
304			{
305			fprintf(stderr, "libpng warning: %s",
306			warning_message);
307			fprintf(stderr, PNG_STRING_NEWLINE);
308			}
309			}
310			else
311			# endif
312			{
313			fprintf(stderr, "libpng warning: %s", warning_message);
314			fprintf(stderr, PNG_STRING_NEWLINE);
315			}
316			#else
317			warning_message = warning_message; /* Make compiler happy */
318			#endif
319			png_ptr = png_ptr; /* Make compiler happy */
320			}
321			#endif /* PNG_NO_WARNINGS */
322
323			/* This function is called when the application wants to use another method
324			* of handling errors and warnings. Note that the error function MUST NOT
325			* return to the calling routine or serious problems will occur. The return
326			* method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
327			*/
328			void PNGAPI
329			png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
330			png_error_ptr error_fn, png_error_ptr warning_fn)
331			{
332			if (png_ptr == NULL)
333			return;
334			png_ptr->error_ptr = error_ptr;
335			png_ptr->error_fn = error_fn;
336			png_ptr->warning_fn = warning_fn;
337			}
338
339
340			/* This function returns a pointer to the error_ptr associated with the user
341			* functions. The application should free any memory associated with this
342			* pointer before png_write_destroy and png_read_destroy are called.
343			*/
344			png_voidp PNGAPI
345			png_get_error_ptr(png_structp png_ptr)
346			{
347			if (png_ptr == NULL)
348			return NULL;
349			return ((png_voidp)png_ptr->error_ptr);
350			}
351
352
353			#ifdef PNG_ERROR_NUMBERS_SUPPORTED
354			void PNGAPI
355			png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
356			{
357			if (png_ptr != NULL)
358			{
359			png_ptr->flags &=
360			((~(PNG_FLAG_STRIP_ERROR_NUMBERS\|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
361			}
362			}
363			#endif
364			#endif /* PNG_READ_SUPPORTED \|\| PNG_WRITE_SUPPORTED */