ALPHA_BLEND_BASE   85 libavfilter/vf_xbr.c #define ALPHA_BLEND_32_W(a, b)  ALPHA_BLEND_BASE(a, b, 1, 3)
ALPHA_BLEND_BASE   86 libavfilter/vf_xbr.c #define ALPHA_BLEND_64_W(a, b)  ALPHA_BLEND_BASE(a, b, 1, 2)
ALPHA_BLEND_BASE   87 libavfilter/vf_xbr.c #define ALPHA_BLEND_192_W(a, b) ALPHA_BLEND_BASE(a, b, 3, 2)
ALPHA_BLEND_BASE   88 libavfilter/vf_xbr.c #define ALPHA_BLEND_224_W(a, b) ALPHA_BLEND_BASE(a, b, 7, 3)