ASSIGN_VSCALE_FUNC  453 libswscale/x86/swscale.c         ASSIGN_VSCALE_FUNC(c->yuv2plane1, mmx, mmxext, cpu_flags & AV_CPU_FLAG_MMXEXT);
ASSIGN_VSCALE_FUNC  502 libswscale/x86/swscale.c         ASSIGN_VSCALE_FUNC(c->yuv2plane1, sse2, sse2, 1);
ASSIGN_VSCALE_FUNC  558 libswscale/x86/swscale.c         ASSIGN_VSCALE_FUNC(c->yuv2plane1, avx, avx, 1);