Updates the PNG library to 1.2.37, enables some functionality for O3D

third_party/libpng/pngerror.c

 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.36 [May 7, 2009]
+ * Last changed in libpng 1.2.37 [June 4, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
  * 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 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.
  */
@@ skipping 212 matching lines @@
              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 */
+   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 */
@@ skipping 25 matching lines @@
        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 */
+   warning_message = warning_message; /* Make compiler happy */
 #endif
-   png_ptr = png_ptr; /* make compiler happy */
+   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,
@@ skipping 25 matching lines @@
 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 */