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author | Glenn Randers-Pehrson <glennrp at users.sourceforge.net> | 2001-10-18 20:55:13 -0500 |
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committer | Glenn Randers-Pehrson <glennrp at users.sourceforge.net> | 2009-04-06 16:06:30 -0500 |
commit | 5a0be341baa9726ca0afdd70abbdfba8b35fe7ff (patch) | |
tree | 97174c0e1b93858a29133408015f7e5b6b576c33 /pngrtran.c | |
parent | 10781048be99b6b79a477e77f4736d0be9555f57 (diff) | |
download | libpng-5a0be341baa9726ca0afdd70abbdfba8b35fe7ff.tar.gz |
Imported from libpng-1.2.1beta1.tarv1.2.1beta1
Diffstat (limited to 'pngrtran.c')
-rw-r--r-- | pngrtran.c | 46 |
1 files changed, 34 insertions, 12 deletions
diff --git a/pngrtran.c b/pngrtran.c index e045c94cb..7329ccf9d 100644 --- a/pngrtran.c +++ b/pngrtran.c @@ -1,7 +1,7 @@ /* pngrtran.c - transforms the data in a row for PNG readers * - * libpng 1.2.0 - September 1, 2001 + * libpng 1.2.1beta1 - October 19, 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) @@ -742,7 +742,7 @@ png_init_read_transformations(png_structp png_ptr) } #endif -#if defined(PNG_READ_BACKGROUND_SUPPORTED) +#if defined(PNG_READ_BACKGROUND_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED) png_ptr->background_1 = png_ptr->background; #endif #if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED) @@ -901,7 +901,7 @@ png_init_read_transformations(png_structp png_ptr) } else /* transformation does not include PNG_BACKGROUND */ -#endif +#endif /* PNG_READ_BACKGROUND_SUPPORTED */ if (color_type == PNG_COLOR_TYPE_PALETTE) { png_colorp palette = png_ptr->palette; @@ -919,7 +919,7 @@ png_init_read_transformations(png_structp png_ptr) #if defined(PNG_READ_BACKGROUND_SUPPORTED) else #endif -#endif +#endif /* PNG_READ_GAMMA_SUPPORTED && PNG_FLOATING_POINT_SUPPORTED */ #if defined(PNG_READ_BACKGROUND_SUPPORTED) /* No GAMMA transformation */ if ((png_ptr->transformations & PNG_BACKGROUND) && @@ -952,7 +952,7 @@ png_init_read_transformations(png_structp png_ptr) } } } -#endif +#endif /* PNG_READ_BACKGROUND_SUPPORTED */ #if defined(PNG_READ_SHIFT_SUPPORTED) if ((png_ptr->transformations & PNG_SHIFT) && @@ -977,7 +977,7 @@ png_init_read_transformations(png_structp png_ptr) png_ptr->palette[i].blue >>= sb; } } -#endif +#endif /* PNG_READ_SHIFT_SUPPORTED */ } #if !defined(PNG_READ_GAMMA_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) \ && !defined(PNG_READ_BACKGROUND_SUPPORTED) @@ -1227,12 +1227,15 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998: ((png_ptr->num_trans != 0 ) || (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) png_do_background(&(png_ptr->row_info), png_ptr->row_buf + 1, - &(png_ptr->trans_values), &(png_ptr->background), - &(png_ptr->background_1), + &(png_ptr->trans_values), &(png_ptr->background) +#if defined(PNG_READ_GAMMA_SUPPORTED) + , &(png_ptr->background_1), png_ptr->gamma_table, png_ptr->gamma_from_1, png_ptr->gamma_to_1, png_ptr->gamma_16_table, png_ptr->gamma_16_from_1, png_ptr->gamma_16_to_1, - png_ptr->gamma_shift); + png_ptr->gamma_shift +#endif +); #endif #if defined(PNG_READ_GAMMA_SUPPORTED) @@ -2545,11 +2548,14 @@ png_correct_palette(png_structp png_ptr, png_colorp palette, */ void /* PRIVATE */ png_do_background(png_row_infop row_info, png_bytep row, - png_color_16p trans_values, png_color_16p background, - png_color_16p background_1, + png_color_16p trans_values, png_color_16p background +#if defined(PNG_READ_GAMMA_SUPPORTED) + , png_color_16p background_1, png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, - png_uint_16pp gamma_16_to_1, int gamma_shift) + png_uint_16pp gamma_16_to_1, int gamma_shift +#endif + ) { png_bytep sp, dp; png_uint_32 i; @@ -2932,6 +2938,7 @@ png_do_background(png_row_infop row_info, png_bytep row, { *dp = *sp; } +#if defined(PNG_READ_GAMMA_SUPPORTED) else if (a == 0) { *dp = (png_byte)background->gray; @@ -2940,6 +2947,9 @@ png_do_background(png_row_infop row_info, png_bytep row, { png_composite(*dp, *sp, a, background_1->gray); } +#else + *dp = (png_byte)background->gray; +#endif } } } @@ -2963,12 +2973,17 @@ png_do_background(png_row_infop row_info, png_bytep row, *dp = (png_byte)((v >> 8) & 0xff); *(dp + 1) = (png_byte)(v & 0xff); } +#if defined(PNG_READ_GAMMA_SUPPORTED) else if (a == 0) +#else + else +#endif { /* background is already in screen gamma */ *dp = (png_byte)((background->gray >> 8) & 0xff); *(dp + 1) = (png_byte)(background->gray & 0xff); } +#if defined(PNG_READ_GAMMA_SUPPORTED) else { png_uint_16 g, v, w; @@ -2979,6 +2994,7 @@ png_do_background(png_row_infop row_info, png_bytep row, *dp = (png_byte)((w >> 8) & 0xff); *(dp + 1) = (png_byte)(w & 0xff); } +#endif } } else @@ -2993,11 +3009,16 @@ png_do_background(png_row_infop row_info, png_bytep row, { png_memcpy(dp, sp, 2); } +#if defined(PNG_READ_GAMMA_SUPPORTED) else if (a == 0) +#else + else +#endif { *dp = (png_byte)((background->gray >> 8) & 0xff); *(dp + 1) = (png_byte)(background->gray & 0xff); } +#if defined(PNG_READ_GAMMA_SUPPORTED) else { png_uint_16 g, v; @@ -3007,6 +3028,7 @@ png_do_background(png_row_infop row_info, png_bytep row, *dp = (png_byte)((v >> 8) & 0xff); *(dp + 1) = (png_byte)(v & 0xff); } +#endif } } } |