47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
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/* pngstub.c - stub functions for i/o and memory allocation
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libpng 1.0 beta 2 - version 0.81
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For conditions of distribution and use, see copyright notice in png.h
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Copyright (c) 1995 Guy Eric Schalnat, Group 42, Inc.
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August 24, 1995
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This file provides a location for all error handling. Users which
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need special error handling are expected to modify the code in this
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file to meet their needs. See the instructions at each function. */
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#define PNG_INTERNAL
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#include "png.h"
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/* This function is called whenever there is an error. Replace with
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however you wish to handle the error. Note that this function
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MUST NOT return, or the program will crash */
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void
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png_error(png_structf *png_ptr, char *message)
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{
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fprintf(stderr, "libpng error: %s\n", message);
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#ifdef USE_FAR_KEYWORD
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{
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jmp_buf jmpbuf;
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png_memcpy(jmpbuf,png_ptr->jmpbuf,sizeof(jmp_buf));
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longjmp(jmpbuf, 1);
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}
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#else
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longjmp(png_ptr->jmpbuf, 1);
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#endif
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}
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/* This function is called when there is a warning, but the library
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thinks it can continue anyway. You don't have to do anything here
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if you don't want to. In the default configuration, png_ptr is
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not used, but it is passed in case it may be useful. */
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void
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png_warning(png_struct *png_ptr, char *message)
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{
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if (!png_ptr)
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return;
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fprintf(stderr, "libpng warning: %s\n", message);
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}
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