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Imported from libpng-1.2.2beta4.tar

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This commit is contained in:
Glenn Randers-Pehrson
2002-03-08 01:31:27 -06:00
parent c1bfe686ce
commit 377657d1d6
65 changed files with 231 additions and 150 deletions
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17
pngrtran.c
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@@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* libpng 1.2.2beta3 - March 7, 2002
* libpng 1.2.2beta4 - March 8, 2002
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2002 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -897,6 +897,11 @@ png_init_read_transformations(png_structp png_ptr)
break;
}
png_ptr->background_1.gray = (png_uint_16)(pow(
(double)png_ptr->background.gray / m, g) * m + .5);
png_ptr->background.gray = (png_uint_16)(pow(
(double)png_ptr->background.gray / m, gs) * m + .5);
if (color_type & PNG_COLOR_MASK_COLOR)
{
/* RGB or RGBA */
@@ -916,10 +921,12 @@ png_init_read_transformations(png_structp png_ptr)
else
{
/* GRAY or GRAY ALPHA */
png_ptr->background_1.gray = (png_uint_16)(pow(
(double)png_ptr->background.gray / m, g) * m + .5);
png_ptr->background.gray = (png_uint_16)(pow(
(double)png_ptr->background.gray / m, gs) * m + .5);
png_ptr->background_1.red = png_ptr->background_1.gray;
png_ptr->background_1.green = png_ptr->background_1.gray;
png_ptr->background_1.blue = png_ptr->background_1.gray;
png_ptr->background.red = png_ptr->background.gray;
png_ptr->background.green = png_ptr->background.gray;
png_ptr->background.blue = png_ptr->background.gray;
}
}
}