diff options
Diffstat (limited to 'pngwrite.c')
| -rw-r--r-- | pngwrite.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/pngwrite.c b/pngwrite.c index 9301fd823..d0331e379 100644 --- a/pngwrite.c +++ b/pngwrite.c @@ -1,7 +1,7 @@ /* pngwrite.c - general routines to write a PNG file * - * libpng 1.2.1beta3 - October 27, 2001 + * libpng 1.2.1beta4 - November 7, 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) @@ -502,7 +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 @@ -556,7 +556,7 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver, 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); } @@ -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) |