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Imported from pngcrush-1.5.8.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-12-12 18:01:38 -06:00
parent f671d863fe
commit 2eb0852fd6
22 changed files with 323 additions and 208 deletions
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41
pngwrite.c
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@@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* libpng 1.2.0 - September 1, 2001
* libpng 1.2.1 - December 12, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -424,7 +424,7 @@ png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr,
{
#ifdef PNG_USER_MEM_SUPPORTED
return (png_create_write_struct_2(user_png_ver, error_ptr, error_fn,
warn_fn, NULL, NULL, NULL));
warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL));
}
/* Alternate initialize png_ptr structure, and allocate any memory needed */
@@ -448,9 +448,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
#else
if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
#endif /* PNG_USER_MEM_SUPPORTED */
{
return ((png_structp)NULL);
}
return (NULL);
#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
png_init_mmx_flags(png_ptr); /* 1.2.0 addition */
@@ -466,7 +464,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_free(png_ptr, png_ptr->zbuf);
png_ptr->zbuf=NULL;
png_destroy_struct(png_ptr);
return ((png_structp)NULL);
return (NULL);
}
#ifdef USE_FAR_KEYWORD
png_memcpy(png_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf));
@@ -504,7 +502,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
user_png_ver);
png_warning(png_ptr, msg);
}
sprintf(msg, "Application is running with png.c from libpng-%.20s",
sprintf(msg, "Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
#endif
@@ -521,11 +519,12 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
(png_uint_32)png_ptr->zbuf_size);
png_set_write_fn(png_ptr, NULL, NULL, NULL);
png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
png_flush_ptr_NULL);
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
1, NULL, NULL);
1, png_doublep_NULL, png_doublep_NULL);
#endif
return ((png_structp)png_ptr);
@@ -550,21 +549,21 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
if(sizeof(png_struct) > png_struct_size || sizeof(png_info) > png_info_size)
{
char msg[80];
png_ptr->warning_fn=(png_error_ptr)NULL;
png_ptr->warning_fn=NULL;
if (user_png_ver)
{
sprintf(msg, "Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
sprintf(msg, "Application is running with png.c from libpng-%.20s",
sprintf(msg, "Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
}
#endif
if(sizeof(png_struct) > png_struct_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_ptr->error_fn=NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags=0;
#endif
@@ -573,7 +572,7 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
}
if(sizeof(png_info) > png_info_size)
{
png_ptr->error_fn=(png_error_ptr)NULL;
png_ptr->error_fn=NULL;
#ifdef PNG_ERROR_NUMBERS_SUPPORTED
png_ptr->flags=0;
#endif
@@ -600,7 +599,7 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
#ifdef PNG_LEGACY_SUPPORTED
png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
#else
png_ptr->warning_fn=(png_error_ptr)NULL;
png_ptr->warning_fn=NULL;
png_warning(png_ptr,
"Application uses deprecated png_write_init() and should be recompiled.");
break;
@@ -634,7 +633,8 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
png_memcpy(png_ptr->jmpbuf, tmp_jmp, sizeof (jmp_buf));
#endif
png_set_write_fn(png_ptr, NULL, NULL, NULL);
png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
png_flush_ptr_NULL);
/* initialize zbuf - compression buffer */
png_ptr->zbuf_size = PNG_ZBUF_SIZE;
@@ -643,7 +643,7 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
1, NULL, NULL);
1, png_doublep_NULL, png_doublep_NULL);
#endif
}
@@ -705,6 +705,11 @@ png_write_row(png_structp png_ptr, png_bytep row)
/* initialize transformations and other stuff if first time */
if (png_ptr->row_number == 0 && png_ptr->pass == 0)
{
/* make sure we wrote the header info */
if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
png_error(png_ptr,
"png_write_info was never called before png_write_row.");
/* check for transforms that have been set but were defined out */
#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
if (png_ptr->transformations & PNG_INVERT_MONO)
@@ -968,7 +973,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
#else
png_destroy_struct((png_voidp)info_ptr);
#endif
*info_ptr_ptr = (png_infop)NULL;
*info_ptr_ptr = NULL;
}
if (png_ptr != NULL)
@@ -980,7 +985,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
#else
png_destroy_struct((png_voidp)png_ptr);
#endif
*png_ptr_ptr = (png_structp)NULL;
*png_ptr_ptr = NULL;
}
}