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Imported from libpng-1.2.0beta1.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-05-06 05:34:26 -05:00
parent e68f5a361b
commit 1fd5fb33c2
56 changed files with 1093 additions and 826 deletions
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94
png.c
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@@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* libpng version 1.0.12beta1 - May 14, 2001
* libpng version 1.2.0beta1 - May 6, 2001
* Copyright (c) 1998-2001 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.)
@@ -13,14 +13,14 @@
#include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_0_12beta1 Your_png_h_is_not_version_1_0_12beta1;
typedef version_1_2_0beta1 Your_png_h_is_not_version_1_2_0beta1;
/* Version information for C files. This had better match the version
* string defined in png.h. */
#ifdef PNG_USE_GLOBAL_ARRAYS
/* png_libpng_ver was changed to a function in version 1.0.5c */
const char png_libpng_ver[18] = "1.0.12beta1";
const char png_libpng_ver[18] = "1.2.0beta1";
/* png_sig was changed to a function in version 1.0.5c */
/* Place to hold the signature string for a PNG file. */
@@ -213,12 +213,12 @@ png_create_info_struct(png_structp png_ptr)
if(png_ptr == NULL) return (NULL);
#ifdef PNG_USER_MEM_SUPPORTED
if ((info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
png_ptr->malloc_fn, png_ptr->mem_ptr)) != NULL)
png_ptr->malloc_fn)) != NULL)
#else
if ((info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO)) != NULL)
#endif
{
png_info_init_3(&info_ptr, sizeof(png_info));
png_info_init(info_ptr);
}
return (info_ptr);
@@ -243,8 +243,7 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
png_info_destroy(png_ptr, info_ptr);
#ifdef PNG_USER_MEM_SUPPORTED
png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn,
png_ptr->mem_ptr);
png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn);
#else
png_destroy_struct((png_voidp)info_ptr);
#endif
@@ -256,28 +255,10 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
* and applications using it are urged to use png_create_info_struct()
* instead.
*/
#undef png_info_init
void PNGAPI
void /* PRIVATE */
png_info_init(png_infop info_ptr)
{
/* We only come here via pre-1.0.12-compiled applications */
png_info_init_3(&info_ptr, 0);
}
void PNGAPI
png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
{
png_infop info_ptr = *ptr_ptr;
png_debug(1, "in png_info_init_3\n");
if(sizeof(png_info) > png_info_struct_size)
{
png_destroy_struct(info_ptr);
info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
*ptr_ptr = info_ptr;
}
png_debug(1, "in png_info_init\n");
/* set everything to 0 */
png_memset(info_ptr, 0, sizeof (png_info));
}
@@ -556,7 +537,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
}
#endif
png_info_init_3(&info_ptr, sizeof(png_info));
png_info_init(info_ptr);
}
/* This function returns a pointer to the io_ptr associated with the user
@@ -646,7 +627,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr)
{
if (png_ptr != NULL || png_ptr == NULL) /* silence compiler warning */
return ((png_charp) "\n libpng version 1.0.12beta1 - May 14, 2001\n\
return ((png_charp) "\n libpng version 1.2.0beta1 - May 6, 2001\n\
Copyright (c) 1998-2001 Glenn Randers-Pehrson\n\
Copyright (c) 1996, 1997 Andreas Dilger\n\
Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
@@ -664,8 +645,8 @@ png_get_libpng_ver(png_structp png_ptr)
{
/* Version of *.c files used when building libpng */
if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
return((png_charp) "1.0.12beta1");
return((png_charp) "1.0.12beta1");
return((png_charp) "1.2.0beta1");
return((png_charp) "1.2.0beta1");
}
png_charp PNGAPI
@@ -715,9 +696,58 @@ png_uint_32 PNGAPI
png_access_version_number(void)
{
/* Version of *.c files used when building libpng */
return((png_uint_32) 10012L);
return((png_uint_32) 10200L);
}
#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
/* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
/* this INTERNAL function was added to libpng 1.2.0 */
void /* PRIVATE */
png_init_mmx_flags (png_structp png_ptr)
{
png_ptr->mmx_rowbytes_threshold = 0;
png_ptr->mmx_bitdepth_threshold = 0;
#if (defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD))
png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_COMPILED;
if (png_mmx_support()) {
png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
| PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
#endif
#ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
| PNG_ASM_FLAG_MMX_READ_INTERLACE
#endif
#ifndef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
;
#else
| PNG_ASM_FLAG_MMX_READ_FILTER_SUB
| PNG_ASM_FLAG_MMX_READ_FILTER_UP
| PNG_ASM_FLAG_MMX_READ_FILTER_AVG
| PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
png_ptr->mmx_rowbytes_threshold = PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT;
png_ptr->mmx_bitdepth_threshold = PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT;
#endif
} else {
png_ptr->asm_flags &= ~( PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
| PNG_MMX_READ_FLAGS
| PNG_MMX_WRITE_FLAGS );
}
#else /* !((PNGVCRD || PNGGCCRD) && PNG_ASSEMBLER_CODE_SUPPORTED)) */
/* clear all MMX flags; no support is compiled in */
png_ptr->asm_flags &= ~( PNG_MMX_FLAGS );
#endif /* ?(PNGVCRD || PNGGCCRD) */
}
#endif /* !(PNG_ASSEMBLER_CODE_SUPPORTED) */
/* this function was added to libpng 1.2.0 */
#if !defined(PNG_USE_PNGGCCRD) && \
!(defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD))