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https://git.code.sf.net/p/libpng/code.git
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Imported from libpng-1.2.8beta2.tar
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@@ -1,7 +1,7 @@
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/* pngtrans.c - transforms the data in a row (used by both readers and writers)
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*
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* libpng 1.2.8beta1 - November 1, 2004
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* libpng 1.2.8beta2 - November 2, 2004
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* For conditions of distribution and use, see copyright notice in png.h
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* Copyright (c) 1998-2004 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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@@ -394,7 +394,7 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags,
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png_uint_32 i;
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if ((row_info->color_type == PNG_COLOR_TYPE_RGB ||
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(row_info->color_type == PNG_COLOR_TYPE_RGBA &&
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(row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
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(transformations & PNG_STRIP_ALPHA))) &&
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row_info->channels == 4)
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{
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@@ -474,7 +474,7 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags,
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}
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row_info->channels = 3;
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}
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else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY &&
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else if ((row_info->color_type == PNG_COLOR_TYPE_GRAY ||
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(row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
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(transformations & PNG_STRIP_ALPHA))) &&
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row_info->channels == 2)
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@@ -530,6 +530,8 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags,
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}
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row_info->channels = 1;
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}
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if (transformations & PNG_STRIP_ALPHA)
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row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
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}
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}
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#endif
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