VP8EncCodeLayerBlock  890 3rdparty/libwebp/enc/frame.c       VP8EncCodeLayerBlock(&it);
VP8EncCodeLayerBlock  946 3rdparty/libwebp/enc/frame.c       VP8EncCodeLayerBlock(&it);
VP8EncCodeLayerBlock  522 3rdparty/libwebp/enc/vp8enci.h void VP8EncCodeLayerBlock(VP8EncIterator* it);   // code one more macroblock