compute_y_16x1_step 50 libswscale/arm/rgb2yuv_neon_16.S .macro compute_y_16x1_step action, s8x16, coeff compute_y_16x1_step 64 libswscale/arm/rgb2yuv_neon_32.S .macro compute_y_16x1_step action, s8x16, coeff