Imported from libpng-0.99a.tar

This commit is contained in:
Glenn Randers-Pehrson 1998-01-31 20:07:59 -06:00
parent 46f61e2398
commit b212002101
21 changed files with 92 additions and 88 deletions

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@ -200,7 +200,7 @@ version 0.98 [January, 1998]
PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED
added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent) added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent)
changed srgb_intent from png_byte to int to avoid compiler bugs changed srgb_intent from png_byte to int to avoid compiler bugs
version 0.99 [January, 1998] version 0.99 [January 30, 1998]
free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler) free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler)
fixed a longstanding "packswap" bug in pngtrans.c fixed a longstanding "packswap" bug in pngtrans.c
fixed some inconsistencies in pngconf.h that prevented compiling with fixed some inconsistencies in pngconf.h that prevented compiling with
@ -213,3 +213,6 @@ version 0.99 [January, 1998]
added TARGET_MACOS similar to zlib-1.0.8 added TARGET_MACOS similar to zlib-1.0.8
define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined
added type casting to all png_malloc() function calls added type casting to all png_malloc() function calls
version 0.99a [January 31, 1998]
added type casts and parentheses to all returns that return a value.(Tim W.)

2
README
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@ -1,4 +1,4 @@
[NOTE: this is still beta version 0.99; the text below has already [NOTE: this is still beta version 0.99a; the text below has already
been updated in anticipation of the imminent 1.0 release.] been updated in anticipation of the imminent 1.0 release.]

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@ -1,9 +1,9 @@
libpng.txt - a description on how to use and modify libpng libpng.txt - a description on how to use and modify libpng
libpng version 0.99 libpng version 0.99a
Updated and distributed by Glenn Randers-Pehrson <randeg@alumni.rpi.edu> Updated and distributed by Glenn Randers-Pehrson <randeg@alumni.rpi.edu>
Copyright (c) 1998, Glenn Randers-Pehrson Copyright (c) 1998, Glenn Randers-Pehrson
January 30, 1998 January 31, 1998
based on: based on:

20
png.c
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@ -1,12 +1,12 @@
/* png.c - location for general purpose libpng functions /* png.c - location for general purpose libpng functions
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
#define PNG_INTERNAL #define PNG_INTERNAL
@ -16,7 +16,7 @@
/* Version information for C files. This had better match the version /* Version information for C files. This had better match the version
* string defined in png.h. * string defined in png.h.
*/ */
char png_libpng_ver[5] = "0.99"; char png_libpng_ver[6] = "0.99";
/* Place to hold the signature string for a PNG file. */ /* Place to hold the signature string for a PNG file. */
png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10}; png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
@ -103,15 +103,15 @@ png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
if (num_to_check > 8) if (num_to_check > 8)
num_to_check = 8; num_to_check = 8;
else if (num_to_check < 1) else if (num_to_check < 1)
return 0; return (0);
if (start > 7) if (start > 7)
return 0; return (0);
if (start + num_to_check > 8) if (start + num_to_check > 8)
num_to_check = 8 - start; num_to_check = 8 - start;
return (png_memcmp(&sig[start], &png_sig[start], num_to_check)); return ((int)(png_memcmp(&sig[start], &png_sig[start], num_to_check)));
} }
/* (Obsolete) function to check signature bytes. It does not allow one /* (Obsolete) function to check signature bytes. It does not allow one
@ -121,7 +121,7 @@ png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)
int int
png_check_sig(png_bytep sig, int num) png_check_sig(png_bytep sig, int num)
{ {
return !png_sig_cmp(sig, (png_size_t)0, (png_size_t)num); return ((int)!png_sig_cmp(sig, (png_size_t)0, (png_size_t)num));
} }
/* Function to allocate memory for zlib. */ /* Function to allocate memory for zlib. */
@ -143,7 +143,7 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
{ {
png_memset(ptr, 0, (png_size_t)num_bytes); png_memset(ptr, 0, (png_size_t)num_bytes);
} }
return (voidpf)(ptr); return ((voidpf)ptr);
} }
/* function to free memory for zlib */ /* function to free memory for zlib */
@ -205,7 +205,7 @@ png_create_info_struct(png_structp png_ptr)
png_info_init(info_ptr); png_info_init(info_ptr);
} }
return info_ptr; return (info_ptr);
} }
/* This function frees the memory associated with a single info struct. /* This function frees the memory associated with a single info struct.
@ -286,7 +286,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
png_voidp png_voidp
png_get_io_ptr(png_structp png_ptr) png_get_io_ptr(png_structp png_ptr)
{ {
return png_ptr->io_ptr; return (png_ptr->io_ptr);
} }
#if !defined(PNG_NO_STDIO) #if !defined(PNG_NO_STDIO)

5
png.h
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@ -1,12 +1,12 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng 0.99 beta * libpng 0.99a beta
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998 Glenn Randers-Pehrson * Copyright (c) 1998 Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* Note about libpng version numbers: * Note about libpng version numbers:
* *
@ -27,6 +27,7 @@
* 0.97c 0.97 2.0.97 * 0.97c 0.97 2.0.97
* 0.98 0.98 2.0.98 * 0.98 0.98 2.0.98
* 0.99 0.99 2.0.99 * 0.99 0.99 2.0.99
* 0.99a 0.99 2.0.99
* 1.0 1.00 2.1.0 * 1.0 1.00 2.1.0
* *
* Henceforth the source version will match the shared-library minor * Henceforth the source version will match the shared-library minor

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@ -1,12 +1,12 @@
/* pngconf.c - machine configurable file for libpng /* pngconf.c - machine configurable file for libpng
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
/* Any machine specific code is near the front of this file, so if you /* Any machine specific code is near the front of this file, so if you

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@ -1,12 +1,12 @@
/* pngerror.c - stub functions for i/o and memory allocation /* pngerror.c - stub functions for i/o and memory allocation
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file provides a location for all error handling. Users which * This file provides a location for all error handling. Users which
* need special error handling are expected to write replacement functions * need special error handling are expected to write replacement functions
@ -167,7 +167,7 @@ png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
png_voidp png_voidp
png_get_error_ptr(png_structp png_ptr) png_get_error_ptr(png_structp png_ptr)
{ {
return png_ptr->error_ptr; return ((png_voidp)png_ptr->error_ptr);
} }

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@ -1,12 +1,12 @@
/* pngget.c - retrieval of values from info struct /* pngget.c - retrieval of values from info struct
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
#define PNG_INTERNAL #define PNG_INTERNAL
@ -126,14 +126,14 @@ png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
{ {
png_debug1(1, "in %s retrieval function\n", "png_get_aspect_ratio"); png_debug1(1, "in %s retrieval function\n", "png_get_aspect_ratio");
if (info_ptr->x_pixels_per_unit == 0) if (info_ptr->x_pixels_per_unit == 0)
return NULL; return (0.0);
else else
return (float)info_ptr->y_pixels_per_unit return ((float)info_ptr->y_pixels_per_unit
/(float)info_ptr->x_pixels_per_unit; /(float)info_ptr->x_pixels_per_unit);
} }
else else
#endif #endif
return (0); return (0.0);
} }
png_uint_32 png_uint_32

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@ -1,11 +1,11 @@
/* pngmem.c - stub functions for memory allocation /* pngmem.c - stub functions for memory allocation
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file provides a location for all memory allocation. Users which * This file provides a location for all memory allocation. Users which
* need special memory handling are expected to modify the code in this file * need special memory handling are expected to modify the code in this file
@ -42,7 +42,7 @@ png_create_struct(int type)
else if (type == PNG_STRUCT_PNG) else if (type == PNG_STRUCT_PNG)
size = sizeof(png_struct); size = sizeof(png_struct);
else else
return (png_voidp)NULL; return ((png_voidp)NULL);
if ((struct_ptr = (png_voidp)farmalloc(size)) != NULL) if ((struct_ptr = (png_voidp)farmalloc(size)) != NULL)
{ {
@ -88,7 +88,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
{ {
png_voidp ret; png_voidp ret;
if (png_ptr == NULL || size == 0) if (png_ptr == NULL || size == 0)
return ((voidp)NULL); return ((png_voidp)NULL);
#ifdef PNG_MAX_MALLOC_64K #ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L) if (size > (png_uint_32)65536L)
@ -177,7 +177,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
png_error(png_ptr, "Out of memory."); /* Note "o" and "m" */ png_error(png_ptr, "Out of memory."); /* Note "o" and "m" */
} }
return ret; return (ret);
} }
/* free a pointer allocated by PNG_MALLOC(). In the default /* free a pointer allocated by PNG_MALLOC(). In the default
@ -234,7 +234,7 @@ png_create_struct(int type)
else if (type == PNG_STRUCT_PNG) else if (type == PNG_STRUCT_PNG)
size = sizeof(png_struct); size = sizeof(png_struct);
else else
return (png_voidp)NULL; return ((png_voidp)NULL);
#if defined(__TURBOC__) && !defined(__FLAT__) #if defined(__TURBOC__) && !defined(__FLAT__)
if ((struct_ptr = (png_voidp)farmalloc(size)) != NULL) if ((struct_ptr = (png_voidp)farmalloc(size)) != NULL)
@ -286,7 +286,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
{ {
png_voidp ret; png_voidp ret;
if (png_ptr == NULL || size == 0) if (png_ptr == NULL || size == 0)
return (NULL); return ((png_voidp)NULL);
#ifdef PNG_MAX_MALLOC_64K #ifdef PNG_MAX_MALLOC_64K
if (size > (png_uint_32)65536L) if (size > (png_uint_32)65536L)
@ -308,7 +308,7 @@ PNG_MALLOC(png_structp png_ptr, png_uint_32 size)
png_error(png_ptr, "Out of Memory"); png_error(png_ptr, "Out of Memory");
} }
return ret; return (ret);
} }
/* Free a pointer allocated by PNG_MALLOC(). In the default /* Free a pointer allocated by PNG_MALLOC(). In the default

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@ -1,12 +1,12 @@
/* pngpread.c - read a png file in push mode /* pngpread.c - read a png file in push mode
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
#define PNG_INTERNAL #define PNG_INTERNAL

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@ -1,12 +1,12 @@
/* pngread.c - read a PNG file /* pngread.c - read a PNG file
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file contains routines that an application calls directly to * This file contains routines that an application calls directly to
* read a PNG file or stream. * read a PNG file or stream.

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@ -1,12 +1,12 @@
/* pngrio.c - functions for data input /* pngrio.c - functions for data input
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file provides a location for all input. Users which need * This file provides a location for all input. Users which need
* special handling are expected to write a function which has the same * special handling are expected to write a function which has the same

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@ -1,12 +1,12 @@
/* pngrtran.c - transforms the data in a row for PNG readers /* pngrtran.c - transforms the data in a row for PNG readers
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file contains functions optionally called by an application * This file contains functions optionally called by an application
* in order to tell libpng how to handle data when reading a PNG. * in order to tell libpng how to handle data when reading a PNG.

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@ -1,12 +1,12 @@
/* pngrutil.c - utilities to read a PNG file /* pngrutil.c - utilities to read a PNG file
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file contains routines which are only called from within * This file contains routines which are only called from within
* libpng itself during the course of reading an image. * libpng itself during the course of reading an image.
@ -27,7 +27,7 @@ png_get_uint_32(png_bytep buf)
((png_uint_32)(*(buf + 2)) << 8) + ((png_uint_32)(*(buf + 2)) << 8) +
(png_uint_32)(*(buf + 3)); (png_uint_32)(*(buf + 3));
return i; return (i);
} }
#if defined(PNG_READ_pCAL_SUPPORTED) #if defined(PNG_READ_pCAL_SUPPORTED)
@ -44,7 +44,7 @@ png_get_int_32(png_bytep buf)
((png_int_32)(*(buf + 2)) << 8) + ((png_int_32)(*(buf + 2)) << 8) +
(png_int_32)(*(buf + 3)); (png_int_32)(*(buf + 3));
return i; return (i);
} }
#endif /* PNG_READ_pCAL_SUPPORTED */ #endif /* PNG_READ_pCAL_SUPPORTED */
@ -57,7 +57,7 @@ png_get_uint_16(png_bytep buf)
i = (png_uint_16)(((png_uint_16)(*buf) << 8) + i = (png_uint_16)(((png_uint_16)(*buf) << 8) +
(png_uint_16)(*(buf + 1))); (png_uint_16)(*(buf + 1)));
return i; return (i);
} }
#endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */ #endif /* PNG_READ_BIG_ENDIAN_SUPPORTED */
@ -100,10 +100,10 @@ png_crc_finish(png_structp png_ptr, png_uint_32 skip)
{ {
png_chunk_error(png_ptr, "CRC error"); png_chunk_error(png_ptr, "CRC error");
} }
return 1; return (1);
} }
return 0; return (0);
} }
/* Compare the CRC stored in the PNG file with that calculated by libpng from /* Compare the CRC stored in the PNG file with that calculated by libpng from
@ -132,10 +132,10 @@ png_crc_error(png_structp png_ptr)
if (need_crc) if (need_crc)
{ {
crc = png_get_uint_32(crc_bytes); crc = png_get_uint_32(crc_bytes);
return (crc != png_ptr->crc); return ((int)(crc != png_ptr->crc));
} }
else else
return 0; return (0);
} }

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@ -1,12 +1,12 @@
/* pngset.c - storage of image information into info struct /* pngset.c - storage of image information into info struct
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* The functions here are used during reads to store data from the file * The functions here are used during reads to store data from the file
* into the info struct, and during writes to store application data * into the info struct, and during writes to store application data

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@ -1,12 +1,12 @@
/* pngtest.c - a simple test program to test libpng /* pngtest.c - a simple test program to test libpng
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This program reads in a PNG image, writes it out again, and then * This program reads in a PNG image, writes it out again, and then
* compares the two files. If the files are identical, this shows that * compares the two files. If the files are identical, this shows that
@ -281,10 +281,10 @@ png_voidp
png_malloc(png_structp png_ptr, png_uint_32 size) { png_malloc(png_structp png_ptr, png_uint_32 size) {
if (png_ptr == NULL) { if (png_ptr == NULL) {
fprintf(STDERR, "NULL pointer to memory allocator\n"); fprintf(STDERR, "NULL pointer to memory allocator\n");
return NULL; return (NULL);
} }
if (size == 0) if (size == 0)
return NULL; return (NULL);
/* This calls the library allocator twice, once to get the requested /* This calls the library allocator twice, once to get the requested
buffer and once to get a new free list entry. */ buffer and once to get a new free list entry. */
@ -299,7 +299,7 @@ png_malloc(png_structp png_ptr, png_uint_32 size) {
pinformation = pinfo; pinformation = pinfo;
/* Make sure the caller isn't assuming zeroed memory. */ /* Make sure the caller isn't assuming zeroed memory. */
png_memset(pinfo->pointer, 0xdd, pinfo->size); png_memset(pinfo->pointer, 0xdd, pinfo->size);
return pinfo->pointer; return ((png_voidp)pinfo->pointer);
} }
} }
@ -369,14 +369,14 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if ((fpin = fopen(inname, "rb")) == NULL) if ((fpin = fopen(inname, "rb")) == NULL)
{ {
fprintf(STDERR, "Could not find input file %s\n", inname); fprintf(STDERR, "Could not find input file %s\n", inname);
return 1; return (1);
} }
if ((fpout = fopen(outname, "wb")) == NULL) if ((fpout = fopen(outname, "wb")) == NULL)
{ {
fprintf(STDERR, "Could not open output file %s\n", outname); fprintf(STDERR, "Could not open output file %s\n", outname);
fclose(fpin); fclose(fpin);
return 1; return (1);
} }
png_debug(0, "Allocating read and write structures\n"); png_debug(0, "Allocating read and write structures\n");
@ -409,7 +409,7 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_destroy_write_struct(&write_ptr, &write_info_ptr); png_destroy_write_struct(&write_ptr, &write_info_ptr);
fclose(fpin); fclose(fpin);
fclose(fpout); fclose(fpout);
return 1; return (1);
} }
png_debug(0, "Setting jmpbuf for write struct\n"); png_debug(0, "Setting jmpbuf for write struct\n");
@ -425,7 +425,7 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_destroy_write_struct(&write_ptr, &write_info_ptr); png_destroy_write_struct(&write_ptr, &write_info_ptr);
fclose(fpin); fclose(fpin);
fclose(fpout); fclose(fpout);
return 1; return (1);
} }
#ifdef USE_FAR_KEYWORD #ifdef USE_FAR_KEYWORD
@ -621,7 +621,7 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
png_destroy_write_struct(&write_ptr, &write_info_ptr); png_destroy_write_struct(&write_ptr, &write_info_ptr);
fclose(fpin); fclose(fpin);
fclose(fpout); fclose(fpout);
return 1; return (1);
} }
num_pass = png_set_interlace_handling(read_ptr); num_pass = png_set_interlace_handling(read_ptr);
@ -663,14 +663,14 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if ((fpin = fopen(inname, "rb")) == NULL) if ((fpin = fopen(inname, "rb")) == NULL)
{ {
fprintf(STDERR, "Could not find file %s\n", inname); fprintf(STDERR, "Could not find file %s\n", inname);
return 1; return (1);
} }
if ((fpout = fopen(outname, "rb")) == NULL) if ((fpout = fopen(outname, "rb")) == NULL)
{ {
fprintf(STDERR, "Could not find file %s\n", outname); fprintf(STDERR, "Could not find file %s\n", outname);
fclose(fpin); fclose(fpin);
return 1; return (1);
} }
while (1) while (1)
@ -686,7 +686,7 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
inname, outname); inname, outname);
fclose(fpin); fclose(fpin);
fclose(fpout); fclose(fpout);
return 1; return (1);
} }
if (!num_in) if (!num_in)
@ -697,14 +697,14 @@ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
fprintf(STDERR, "Files %s and %s are different\n", inname, outname); fprintf(STDERR, "Files %s and %s are different\n", inname, outname);
fclose(fpin); fclose(fpin);
fclose(fpout); fclose(fpout);
return 1; return (1);
} }
} }
fclose(fpin); fclose(fpin);
fclose(fpout); fclose(fpout);
return 0; return (0);
} }
/* input and output filenames */ /* input and output filenames */
@ -867,5 +867,5 @@ main(int argc, char *argv[])
fprintf(STDERR, "libpng passes test\n"); fprintf(STDERR, "libpng passes test\n");
else else
fprintf(STDERR, "libpng FAILS test\n"); fprintf(STDERR, "libpng FAILS test\n");
return ierror != 0; return ((int)(ierror != 0));
} }

View File

@ -1,12 +1,12 @@
/* pngtrans.c - transforms the data in a row (used by both readers and writers) /* pngtrans.c - transforms the data in a row (used by both readers and writers)
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
#define PNG_INTERNAL #define PNG_INTERNAL
@ -77,10 +77,10 @@ png_set_interlace_handling(png_structp png_ptr)
if (png_ptr->interlaced) if (png_ptr->interlaced)
{ {
png_ptr->transformations |= PNG_INTERLACE; png_ptr->transformations |= PNG_INTERLACE;
return 7; return (7);
} }
return 1; return (1);
} }
#endif #endif

View File

@ -1,12 +1,12 @@
/* pngwio.c - functions for data output /* pngwio.c - functions for data output
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
* *
* This file provides a location for all output. Users which need * This file provides a location for all output. Users which need
* special handling are expected to write functions which have the same * special handling are expected to write functions which have the same

View File

@ -1,12 +1,12 @@
/* pngwrite.c - general routines to write a PNG file /* pngwrite.c - general routines to write a PNG file
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
/* get internal access to png.h */ /* get internal access to png.h */
@ -249,7 +249,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
ptime->year, ptime->hour % 24, ptime->minute % 60, ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61); ptime->second % 61);
#endif #endif
return png_ptr->time_buffer; return ((png_charp)png_ptr->time_buffer);
} }
#endif /* PNG_TIME_RFC1123_SUPPORTED */ #endif /* PNG_TIME_RFC1123_SUPPORTED */
@ -289,7 +289,7 @@ png_create_write_struct(png_const_charp user_png_ver, voidp error_ptr,
png_debug(1, "in png_create_write_struct\n"); png_debug(1, "in png_create_write_struct\n");
if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL) if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
{ {
return (png_structp)NULL; return ((png_structp)NULL);
} }
#ifdef USE_FAR_KEYWORD #ifdef USE_FAR_KEYWORD
if (setjmp(jmpbuf)) if (setjmp(jmpbuf))
@ -299,7 +299,7 @@ png_create_write_struct(png_const_charp user_png_ver, voidp error_ptr,
{ {
png_free(png_ptr, png_ptr->zbuf); png_free(png_ptr, png_ptr->zbuf);
png_destroy_struct(png_ptr); png_destroy_struct(png_ptr);
return (png_structp)NULL; return ((png_structp)NULL);
} }
#ifdef USE_FAR_KEYWORD #ifdef USE_FAR_KEYWORD
png_memcpy(png_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf)); png_memcpy(png_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf));
@ -329,7 +329,7 @@ png_create_write_struct(png_const_charp user_png_ver, voidp error_ptr,
1, NULL, NULL); 1, NULL, NULL);
#endif #endif
return (png_ptr); return ((png_structp)png_ptr);
} }

View File

@ -1,12 +1,12 @@
/* pngwtran.c - transforms the data in a row for PNG writers /* pngwtran.c - transforms the data in a row for PNG writers
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
#define PNG_INTERNAL #define PNG_INTERNAL

View File

@ -1,12 +1,12 @@
/* pngwutil.c - utilities to write a PNG file /* pngwutil.c - utilities to write a PNG file
* *
* libpng 0.99 * libpng 0.99a
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger * Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson * Copyright (c) 1998, Glenn Randers-Pehrson
* January 30, 1998 * January 31, 1998
*/ */
#define PNG_INTERNAL #define PNG_INTERNAL
@ -599,7 +599,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
if (key == NULL || (key_len = png_strlen(key)) == 0) if (key == NULL || (key_len = png_strlen(key)) == 0)
{ {
png_chunk_warning(png_ptr, "zero length keyword"); png_chunk_warning(png_ptr, "zero length keyword");
return 0; return ((png_size_t)0);
} }
png_debug1(2, "Keyword to be checked is '%s'\n", key); png_debug1(2, "Keyword to be checked is '%s'\n", key);
@ -688,7 +688,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
key_len = 79; key_len = 79;
} }
return key_len; return (key_len);
} }
#endif #endif