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[libpng16] Clean up coding style in png_handle_PLTE()

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Glenn Randers-Pehrson 2015-11-05 11:18:44 -06:00
parent 64fef09b67
commit 83f4c735c8
1 changed files with 10 additions and 7 deletions
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15
pngrutil.c
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@ -930,16 +930,19 @@ png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
return;
}
max_palette_length = (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ?
(1 << png_ptr->bit_depth) : PNG_MAX_PALETTE_LENGTH;
/* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
num = (int)length / 3;
/* If the palette has 256 or fewer entries but is too large for the bit depth,
* we don't issue an error, to preserve the behavior of previous libpng versions.
* We silently truncate the unused extra palette entries here.
/* If the palette has 256 or fewer entries but is too large for the bit
* depth, we don't issue an error, to preserve the behavior of previous
* libpng versions. We silently truncate the unused extra palette entries
* here.
*/
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
max_palette_length = (1 << png_ptr->bit_depth);
else
max_palette_length = PNG_MAX_PALETTE_LENGTH;
if (num > max_palette_length)
num = max_palette_length;