gd_RGBAToYUV420    17 ext/gd/libgd/gd_webp.c extern void gd_RGBAToYUV420(gdImagePtr im2,
gd_RGBAToYUV420   193 ext/gd/libgd/gd_webp.c     gd_RGBAToYUV420(im, Y, U, V);