WebPPictureARGBToYUVA  380 3rdparty/libwebp/enc/webpenc.c       if (!WebPPictureARGBToYUVA(pic, WEBP_YUV420)) return 0;
WebPPictureARGBToYUVA  443 3rdparty/libwebp/webp/encode.h WEBP_EXTERN(int) WebPPictureARGBToYUVA(WebPPicture* picture,