VP8GetCostLuma4 960 third_party/libwebp/enc/quant.c rd_tmp.R = VP8GetCostLuma4(it, tmp_levels); VP8GetCostLuma4 506 third_party/libwebp/enc/vp8enci.h int VP8GetCostLuma4(VP8EncIterator* const it, const int16_t levels[16]);