diff options
Diffstat (limited to 'libpng/pngwio.c')
| -rw-r--r-- | libpng/pngwio.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/libpng/pngwio.c b/libpng/pngwio.c index 01ebbcf..371a4fa 100644 --- a/libpng/pngwio.c +++ b/libpng/pngwio.c @@ -1,9 +1,9 @@ /* pngwio.c - functions for data output * - * libpng 1.2.1 - December 12, 2001 + * Last changed in libpng 1.2.13 November 13, 2006 * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2001 Glenn Randers-Pehrson + * Copyright (c) 1998-2006 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.) * @@ -40,11 +40,12 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length) write_data function and use it at run time with png_set_write_fn(), rather than changing the library. */ #ifndef USE_FAR_KEYWORD -static void /* PRIVATE */ +void PNGAPI png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { png_uint_32 check; + if(png_ptr == NULL) return; #if defined(_WIN32_WCE) if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) ) check = 0; @@ -63,13 +64,14 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) #define NEAR_BUF_SIZE 1024 #define MIN(a,b) (a <= b ? a : b) -static void /* PRIVATE */ +void PNGAPI png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { png_uint_32 check; png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */ png_FILE_p io_ptr; + if(png_ptr == NULL) return; /* Check if data really is near. If so, use usual code. */ near_data = (png_byte *)CVT_PTR_NOCHECK(data); io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); @@ -126,11 +128,14 @@ png_flush(png_structp png_ptr) } #if !defined(PNG_NO_STDIO) -static void /* PRIVATE */ +void PNGAPI png_default_flush(png_structp png_ptr) { #if !defined(_WIN32_WCE) png_FILE_p io_ptr; +#endif + if(png_ptr == NULL) return; +#if !defined(_WIN32_WCE) io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr)); if (io_ptr != NULL) fflush(io_ptr); @@ -165,6 +170,7 @@ void PNGAPI png_set_write_fn(png_structp png_ptr, png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn) { + if(png_ptr == NULL) return; png_ptr->io_ptr = io_ptr; #if !defined(PNG_NO_STDIO) |