ALPHA_SHIFT_8_TO_12   84 libavcodec/proresdec2.c                     dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val);
ALPHA_SHIFT_8_TO_12  108 libavcodec/proresdec2.c                     dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val);