MIN_HUFFMAN_BITS  538 3rdparty/libwebp/enc/vp8l.c   assert(histogram_bits >= MIN_HUFFMAN_BITS);
MIN_HUFFMAN_BITS  935 3rdparty/libwebp/enc/vp8l.c   return (histo_bits < MIN_HUFFMAN_BITS) ? MIN_HUFFMAN_BITS :