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Imported from libpng-0.86.tar

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Guy Schalnat
1996-01-10 02:56:49 -06:00
committed by Glenn Randers-Pehrson
parent 6d76471acd
commit 69b1448f19
21 changed files with 572 additions and 410 deletions
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39
pngerror.c
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@@ -1,21 +1,23 @@
/* pngerror.c - stub functions for i/o and memory allocation
libpng 1.0 beta 2 - version 0.85
libpng 1.0 beta 2 - version 0.86
For conditions of distribution and use, see copyright notice in png.h
Copyright (c) 1995 Guy Eric Schalnat, Group 42, Inc.
December 19, 1995
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
January 10, 1996
This file provides a location for all error handling. Users which
need special error handling are expected to modify the code in this
file to meet their needs. See the instructions at each function. */
This file provides a location for all error handling. Users which
need special error handling are expected to write replacement functions
and use png_set_message_fn() to use those functions. See the instructions
at each function. */
#define PNG_INTERNAL
#include "png.h"
/* This function is called whenever there is an error. Replace with
however you wish to handle the error. Note that this function
MUST NOT return, or the program will crash */
/* 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_message_fn()
to replace the error function at run-time. */
void
png_error(png_structp png_ptr, png_const_charp message)
{
@@ -27,6 +29,10 @@ png_error(png_structp png_ptr, png_const_charp message)
png_default_error(png_ptr, message);
}
/* 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_message_fn() to replace the warning function at run-time. */
void
png_warning(png_structp png_ptr, png_const_charp message)
{
@@ -54,11 +60,10 @@ png_default_error(png_structp png_ptr, png_const_charp message)
#endif
}
/* This function is called when there is a warning, but the library
thinks it can continue anyway. You don't have to do anything here
if you don't want to. In the default configuration, png_ptr is
/* 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 to. In the default configuration, png_ptr is
not used, but it is passed in case it may be useful. */
void
png_default_warning(png_structp png_ptr, png_const_charp message)
{
@@ -70,10 +75,10 @@ png_default_warning(png_structp png_ptr, png_const_charp message)
#endif
}
/* 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
error return method used in the default routine calls
/* 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 error
return method used in the default routine calls
longjmp(png_ptr->jmpbuf, 1) */
void
png_set_message_fn(png_structp png_ptr, png_voidp msg_ptr, png_msg_ptr error_fn,