V4L2_VP9_SIGN_BIAS_ALT
dec_params->ref_frame_sign_bias & V4L2_VP9_SIGN_BIAS_ALT ? 1 : 0);
alt_ref_frame_sign_bias = dec_params->ref_frame_sign_bias & V4L2_VP9_SIGN_BIAS_ALT;
{V4L2_VP9_SIGN_BIAS_ALT, "SIGN_BIAS_ALT"}),