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[libpng16] Added "& 0xff" to things being typecast to "png_byte".

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This commit is contained in:
Glenn Randers-Pehrson
2015-02-27 18:53:44 -06:00
parent 9a3de48b48
commit 7011a8cec3
12 changed files with 249 additions and 231 deletions
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29
pngwtran.c
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@@ -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 */