v4l2_ctrl_grab
v4l2_ctrl_grab(cxhdl->audio_sampling_freq, busy);
v4l2_ctrl_grab(cxhdl->audio_encoding, busy);
v4l2_ctrl_grab(cxhdl->audio_l2_bitrate, busy);
v4l2_ctrl_grab(cxhdl->audio_ac3_bitrate, busy);
v4l2_ctrl_grab(cxhdl->stream_vbi_fmt, busy);
v4l2_ctrl_grab(cxhdl->stream_type, busy);
v4l2_ctrl_grab(cxhdl->video_bitrate_mode, busy);
v4l2_ctrl_grab(cxhdl->video_bitrate, busy);
v4l2_ctrl_grab(cxhdl->video_bitrate_peak, busy);
v4l2_ctrl_grab(imx208->vflip, enable);
v4l2_ctrl_grab(imx208->hflip, enable);
v4l2_ctrl_grab(sensor->hflip_ctrl, enable);
v4l2_ctrl_grab(sensor->vflip_ctrl, enable);
v4l2_ctrl_grab(sensor->patgen_ctrl, enable);
v4l2_ctrl_grab(sensor->hdr_ctrl, enable);
v4l2_ctrl_grab(core->chroma_agc, cxiformat == VideoFormatSECAM);
v4l2_ctrl_grab(channel->mpeg_video_h264_profile, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_level, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_i_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_max_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_min_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_p_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_b_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_profile, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_level, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_tier, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_i_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_max_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_min_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_p_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_b_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_frame_rc_enable, false);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_mode, false);
v4l2_ctrl_grab(channel->mpeg_video_bitrate, false);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_peak, false);
v4l2_ctrl_grab(channel->mpeg_video_cpb_size, false);
v4l2_ctrl_grab(channel->mpeg_video_gop_size, false);
v4l2_ctrl_grab(channel->encoder_buffer, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_profile, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_level, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_i_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_max_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_min_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_p_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_b_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_profile, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_level, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_tier, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_i_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_max_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_min_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_p_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_b_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_frame_rc_enable, true);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_mode, true);
v4l2_ctrl_grab(channel->mpeg_video_bitrate, true);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_peak, true);
v4l2_ctrl_grab(channel->mpeg_video_cpb_size, true);
v4l2_ctrl_grab(channel->mpeg_video_gop_size, true);
v4l2_ctrl_grab(channel->encoder_buffer, true);
v4l2_ctrl_grab(dev->ctrl_has_crop_cap, grab);
v4l2_ctrl_grab(dev->ctrl_has_compose_cap, grab);
v4l2_ctrl_grab(dev->ctrl_has_scaler_cap, grab);
v4l2_ctrl_grab(dev->ctrl_has_crop_out, grab);
v4l2_ctrl_grab(dev->ctrl_has_compose_out, grab);
v4l2_ctrl_grab(dev->ctrl_has_scaler_out, grab);
v4l2_ctrl_grab(dev->ctrl_tx_mode, grab);
v4l2_ctrl_grab(dev->ctrl_tx_rgb_range, grab);
v4l2_ctrl_grab(go->mpeg_video_gop_size, true);
v4l2_ctrl_grab(go->mpeg_video_gop_closure, true);
v4l2_ctrl_grab(go->mpeg_video_bitrate, true);
v4l2_ctrl_grab(go->mpeg_video_aspect_ratio, true);
v4l2_ctrl_grab(go->mpeg_video_gop_size, false);
v4l2_ctrl_grab(go->mpeg_video_gop_closure, false);
v4l2_ctrl_grab(go->mpeg_video_bitrate, false);
v4l2_ctrl_grab(go->mpeg_video_aspect_ratio, false);
v4l2_ctrl_grab(sd->jpegqual, true);
v4l2_ctrl_grab(sd->jpegqual, false);
v4l2_ctrl_grab(sd->lighting, true);
v4l2_ctrl_grab(sd->lighting, false);
v4l2_ctrl_grab(dev->rx_rf_gain, !hackrf_enable_rf_gain_ctrl);
v4l2_ctrl_grab(dev->tx_rf_gain, !hackrf_enable_rf_gain_ctrl);
v4l2_ctrl_grab(imgu_sd->ctrl, enable);