VP8QuantMatrix     94 3rdparty/libwebp/dec/quant.c       VP8QuantMatrix* const m = &dec->dqm_[i];
VP8QuantMatrix    556 3rdparty/libwebp/dec/vp8.c   const VP8QuantMatrix* q = &dec->dqm_[dec->segment_];
VP8QuantMatrix    226 3rdparty/libwebp/dec/vp8i.h   VP8QuantMatrix dqm_[NUM_MB_SEGMENTS];