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[libpng17] Work in progress, merging with libpng-1.6.17rc01.

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This commit is contained in:
Glenn Randers-Pehrson
2015-03-04 14:24:54 -06:00
parent 79a332afd0
commit c2f0c9683f
7 changed files with 79 additions and 76 deletions
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33
pngwtran.c
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@@ -1,8 +1,8 @@
/* pngwtran.c - transforms the data in a row for PNG writers
*
* Last changed in libpng 1.6.15 [November 20, 2014]
* Copyright (c) 1998-2014 Glenn Randers-Pehrson
* Last changed in libpng 1.6.17 [(PENDING RELEASE)]
* Copyright (c) 1998-2015 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.)
*
@@ -56,14 +56,14 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
else
{
mask = 0x80;
*dp = (png_byte)v;
*dp = (png_byte)(v & 0xff);
dp++;
v = 0;
}
}
if (mask != 0x80)
*dp = (png_byte)v;
*dp = (png_byte)(v & 0xff);
break;
}
@@ -90,7 +90,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
if (shift == 0)
{
shift = 6;
*dp = (png_byte)v;
*dp = (png_byte)(v & 0xff);
dp++;
v = 0;
}
@@ -102,7 +102,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
}
if (shift != 6)
*dp = (png_byte)v;
*dp = (png_byte)(v & 0xff);
break;
}
@@ -129,7 +129,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
if (shift == 0)
{
shift = 4;
*dp = (png_byte)v;
*dp = (png_byte)(v & 0xff);
dp++;
v = 0;
}
@@ -141,7 +141,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
}
if (shift != 4)
*dp = (png_byte)v;
*dp = (png_byte)(v & 0xff);
break;
}
@@ -150,8 +150,9 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
break;
}
row_info->bit_depth = (png_byte)bit_depth;
row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels);
row_info->bit_depth = (png_byte)(bit_depth & 0xff);
row_info->pixel_depth =
(png_byte)((bit_depth * row_info->channels) & 0xff);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
row_info->width);
}
@@ -422,7 +423,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = *(sp++);
*/
sp+=3; dp = sp;
*(dp++) = (png_byte)(255 - *(sp++));
*(dp++) = (png_byte)((255 - *(sp++)) & 0xff);
}
}
@@ -445,8 +446,8 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = *(sp++);
*/
sp+=6; dp = sp;
*(dp++) = (png_byte)(255 - *(sp++));
*(dp++) = (png_byte)(255 - *(sp++));
*(dp++) = (png_byte)((255 - *(sp++)) & 0xff);
*(dp++) = (png_byte)((255 - *(sp++)) & 0xff);
}
}
#endif /* WRITE_16BIT */
@@ -464,7 +465,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
for (i = 0, sp = dp = row; i < row_width; i++)
{
*(dp++) = *(sp++);
*(dp++) = (png_byte)(255 - *(sp++));
*(dp++) = (png_byte)((255 - *(sp++)) & 0xff);
}
}
@@ -483,8 +484,8 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
*(dp++) = *(sp++);
*/
sp+=2; dp = sp;
*(dp++) = (png_byte)(255 - *(sp++));
*(dp++) = (png_byte)(255 - *(sp++));
*(dp++) = (png_byte)((255 - *(sp++)) & 0xff);
*(dp++) = (png_byte)((255 - *(sp++)) & 0xff);
}
}
#endif /* WRITE_16BIT */