diff options
Diffstat (limited to 'Build/source/libs/libpng/pngwtran.c')
-rw-r--r-- | Build/source/libs/libpng/pngwtran.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/Build/source/libs/libpng/pngwtran.c b/Build/source/libs/libpng/pngwtran.c index f1c8b3e62a5..0372fe656ce 100644 --- a/Build/source/libs/libpng/pngwtran.c +++ b/Build/source/libs/libpng/pngwtran.c @@ -1,9 +1,9 @@ /* pngwtran.c - transforms the data in a row for PNG writers * - * libpng version 1.2.8 - December 3, 2004 + * Last changed in libpng 1.2.9 April 14, 2006 * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1998-2004 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.) */ @@ -60,14 +60,14 @@ png_do_write_transformations(png_structp png_ptr) png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1, &(png_ptr->shift)); #endif -#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) - if (png_ptr->transformations & PNG_INVERT_ALPHA) - png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); -#endif #if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) if (png_ptr->transformations & PNG_SWAP_ALPHA) png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); #endif +#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) + if (png_ptr->transformations & PNG_INVERT_ALPHA) + png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1); +#endif #if defined(PNG_WRITE_BGR_SUPPORTED) if (png_ptr->transformations & PNG_BGR) png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1); @@ -439,9 +439,12 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) png_uint_32 row_width = row_info->width; for (i = 0, sp = dp = row; i < row_width; i++) { + /* does nothing *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); + */ + sp+=3; dp = sp; *(dp++) = (png_byte)(255 - *(sp++)); } } @@ -454,12 +457,15 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) for (i = 0, sp = dp = row; i < row_width; i++) { + /* does nothing *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); *(dp++) = *(sp++); + */ + sp+=6; dp = sp; *(dp++) = (png_byte)(255 - *(sp++)); *(dp++) = (png_byte)(255 - *(sp++)); } @@ -489,8 +495,11 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row) for (i = 0, sp = dp = row; i < row_width; i++) { + /* does nothing *(dp++) = *(sp++); *(dp++) = *(sp++); + */ + sp+=2; dp = sp; *(dp++) = (png_byte)(255 - *(sp++)); *(dp++) = (png_byte)(255 - *(sp++)); } |