WebPPictureYUVAToARGB  408 3rdparty/libwebp/enc/webpenc.c     if (pic->argb == NULL && !WebPPictureYUVAToARGB(pic)) {
WebPPictureYUVAToARGB  452 3rdparty/libwebp/webp/encode.h WEBP_EXTERN(int) WebPPictureYUVAToARGB(WebPPicture* picture);