VP8LColorSpaceTransform 52 3rdparty/libwebp/dsp/lossless.h void VP8LColorSpaceTransform(int width, int height, int bits, int step, VP8LColorSpaceTransform 707 3rdparty/libwebp/enc/vp8l.c VP8LColorSpaceTransform(width, height, ccolor_transform_bits, step,