diff options
Diffstat (limited to 'pngtrans.c')
| -rw-r--r-- | pngtrans.c | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/pngtrans.c b/pngtrans.c index 6e1870c59..c4bbecc18 100644 --- a/pngtrans.c +++ b/pngtrans.c @@ -1,7 +1,7 @@ /* pngtrans.c - transforms the data in a row (used by both readers and writers) * - * Last changed in libpng 1.2.36 [May 14, 2009] + * Last changed in libpng 1.2.41 [November 18, 2009] * Copyright (c) 1998-2009 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.) @@ -21,6 +21,7 @@ void PNGAPI png_set_bgr(png_structp png_ptr) { png_debug(1, "in png_set_bgr"); + if (png_ptr == NULL) return; png_ptr->transformations |= PNG_BGR; @@ -33,6 +34,7 @@ void PNGAPI png_set_swap(png_structp png_ptr) { png_debug(1, "in png_set_swap"); + if (png_ptr == NULL) return; if (png_ptr->bit_depth == 16) @@ -46,6 +48,7 @@ void PNGAPI png_set_packing(png_structp png_ptr) { png_debug(1, "in png_set_packing"); + if (png_ptr == NULL) return; if (png_ptr->bit_depth < 8) @@ -62,6 +65,7 @@ void PNGAPI png_set_packswap(png_structp png_ptr) { png_debug(1, "in png_set_packswap"); + if (png_ptr == NULL) return; if (png_ptr->bit_depth < 8) @@ -74,6 +78,7 @@ void PNGAPI png_set_shift(png_structp png_ptr, png_color_8p true_bits) { png_debug(1, "in png_set_shift"); + if (png_ptr == NULL) return; png_ptr->transformations |= PNG_SHIFT; @@ -87,6 +92,7 @@ int PNGAPI png_set_interlace_handling(png_structp png_ptr) { png_debug(1, "in png_set_interlace handling"); + if (png_ptr && png_ptr->interlaced) { png_ptr->transformations |= PNG_INTERLACE; @@ -107,10 +113,15 @@ void PNGAPI png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc) { png_debug(1, "in png_set_filler"); + if (png_ptr == NULL) return; png_ptr->transformations |= PNG_FILLER; +#ifdef PNG_LEGACY_SUPPORTED png_ptr->filler = (png_byte)filler; +#else + png_ptr->filler = (png_uint_16)filler; +#endif if (filler_loc == PNG_FILLER_AFTER) png_ptr->flags |= PNG_FLAG_FILLER_AFTER; else @@ -135,12 +146,13 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc) } } -#if !defined(PNG_1_0_X) +#ifndef PNG_1_0_X /* Added to libpng-1.2.7 */ void PNGAPI png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc) { png_debug(1, "in png_set_add_alpha"); + if (png_ptr == NULL) return; png_set_filler(png_ptr, filler, filler_loc); @@ -156,6 +168,7 @@ void PNGAPI png_set_swap_alpha(png_structp png_ptr) { png_debug(1, "in png_set_swap_alpha"); + if (png_ptr == NULL) return; png_ptr->transformations |= PNG_SWAP_ALPHA; @@ -168,6 +181,7 @@ void PNGAPI png_set_invert_alpha(png_structp png_ptr) { png_debug(1, "in png_set_invert_alpha"); + if (png_ptr == NULL) return; png_ptr->transformations |= PNG_INVERT_ALPHA; @@ -179,6 +193,7 @@ void PNGAPI png_set_invert_mono(png_structp png_ptr) { png_debug(1, "in png_set_invert_mono"); + if (png_ptr == NULL) return; png_ptr->transformations |= PNG_INVERT_MONO; @@ -189,10 +204,11 @@ void /* PRIVATE */ png_do_invert(png_row_infop row_info, png_bytep row) { png_debug(1, "in png_do_invert"); + /* This test removed from libpng version 1.0.13 and 1.2.0: * if (row_info->bit_depth == 1 && */ -#if defined(PNG_USELESS_TESTS_SUPPORTED) +#ifdef PNG_USELESS_TESTS_SUPPORTED if (row == NULL || row_info == NULL) return; #endif @@ -244,8 +260,9 @@ void /* PRIVATE */ png_do_swap(png_row_infop row_info, png_bytep row) { png_debug(1, "in png_do_swap"); + if ( -#if defined(PNG_USELESS_TESTS_SUPPORTED) +#ifdef PNG_USELESS_TESTS_SUPPORTED row != NULL && row_info != NULL && #endif row_info->bit_depth == 16) @@ -375,8 +392,9 @@ void /* PRIVATE */ png_do_packswap(png_row_infop row_info, png_bytep row) { png_debug(1, "in png_do_packswap"); + if ( -#if defined(PNG_USELESS_TESTS_SUPPORTED) +#ifdef PNG_USELESS_TESTS_SUPPORTED row != NULL && row_info != NULL && #endif row_info->bit_depth < 8) @@ -407,7 +425,8 @@ void /* PRIVATE */ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags) { png_debug(1, "in png_do_strip_filler"); -#if defined(PNG_USELESS_TESTS_SUPPORTED) + +#ifdef PNG_USELESS_TESTS_SUPPORTED if (row != NULL && row_info != NULL) #endif { @@ -565,8 +584,9 @@ void /* PRIVATE */ png_do_bgr(png_row_infop row_info, png_bytep row) { png_debug(1, "in png_do_bgr"); + if ( -#if defined(PNG_USELESS_TESTS_SUPPORTED) +#ifdef PNG_USELESS_TESTS_SUPPORTED row != NULL && row_info != NULL && #endif (row_info->color_type & PNG_COLOR_MASK_COLOR)) @@ -644,9 +664,10 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp user_transform_ptr, int user_transform_depth, int user_transform_channels) { png_debug(1, "in png_set_user_transform_info"); + if (png_ptr == NULL) return; -#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) +#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED png_ptr->user_transform_ptr = user_transform_ptr; png_ptr->user_transform_depth = (png_byte)user_transform_depth; png_ptr->user_transform_channels = (png_byte)user_transform_channels; @@ -668,7 +689,7 @@ png_get_user_transform_ptr(png_structp png_ptr) { if (png_ptr == NULL) return (NULL); -#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) +#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED return ((png_voidp)png_ptr->user_transform_ptr); #else return (NULL); |