VP8LSubtractGreenFromBlueAndRed   46 3rdparty/libwebp/dsp/lossless.h void VP8LSubtractGreenFromBlueAndRed(uint32_t* argb_data, int num_pixs);
VP8LSubtractGreenFromBlueAndRed  673 3rdparty/libwebp/enc/vp8l.c       VP8LSubtractGreenFromBlueAndRed(enc->argb_, width * height);