USBDHDR
f_audio_desc[i++] = USBDHDR(&ac_interface_desc);
f_audio_desc[i++] = USBDHDR(ac_header_desc);
f_audio_desc[i++] = USBDHDR(&usb_out_it_desc);
f_audio_desc[i++] = USBDHDR(&io_out_ot_desc);
f_audio_desc[i++] = USBDHDR(out_feature_unit_desc);
f_audio_desc[i++] = USBDHDR(&io_in_it_desc);
f_audio_desc[i++] = USBDHDR(&usb_in_ot_desc);
f_audio_desc[i++] = USBDHDR(in_feature_unit_desc);
f_audio_desc[i++] = USBDHDR(&ac_int_ep_desc);
f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_0_desc);
f_audio_desc[i++] = USBDHDR(&as_out_interface_alt_1_desc);
f_audio_desc[i++] = USBDHDR(&as_out_header_desc);
f_audio_desc[i++] = USBDHDR(&as_out_type_i_desc);
f_audio_desc[i++] = USBDHDR(&as_out_ep_desc);
f_audio_desc[i++] = USBDHDR(&as_iso_out_desc);
f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_0_desc);
f_audio_desc[i++] = USBDHDR(&as_in_interface_alt_1_desc);
f_audio_desc[i++] = USBDHDR(&as_in_header_desc);
f_audio_desc[i++] = USBDHDR(&as_in_type_i_desc);
f_audio_desc[i++] = USBDHDR(&as_in_ep_desc);
f_audio_desc[i++] = USBDHDR(&as_iso_in_desc);
headers[i++] = USBDHDR(&iad_desc);
headers[i++] = USBDHDR(&std_ac_if_desc);
headers[i++] = USBDHDR(&ac_hdr_desc);
headers[i++] = USBDHDR(&in_clk_src_desc);
headers[i++] = USBDHDR(&out_clk_src_desc);
headers[i++] = USBDHDR(&usb_out_it_desc);
headers[i++] = USBDHDR(out_feature_unit_desc);
headers[i++] = USBDHDR(&io_in_it_desc);
headers[i++] = USBDHDR(in_feature_unit_desc);
headers[i++] = USBDHDR(&usb_in_ot_desc);
headers[i++] = USBDHDR(&io_out_ot_desc);
headers[i++] = USBDHDR(ep_int_desc);
headers[i++] = USBDHDR(ep_int_desc_comp);
headers[i++] = USBDHDR(&std_as_out_if0_desc);
headers[i++] = USBDHDR(&std_as_out_if1_desc);
headers[i++] = USBDHDR(&as_out_hdr_desc);
headers[i++] = USBDHDR(&as_out_fmt1_desc);
headers[i++] = USBDHDR(epout_desc);
headers[i++] = USBDHDR(epout_desc_comp);
headers[i++] = USBDHDR(&as_iso_out_desc);
headers[i++] = USBDHDR(epin_fback_desc);
headers[i++] = USBDHDR(epin_fback_desc_comp);
headers[i++] = USBDHDR(&std_as_in_if0_desc);
headers[i++] = USBDHDR(&std_as_in_if1_desc);
headers[i++] = USBDHDR(&as_in_hdr_desc);
headers[i++] = USBDHDR(&as_in_fmt1_desc);
headers[i++] = USBDHDR(epin_desc);
headers[i++] = USBDHDR(epin_desc_comp);
headers[i++] = USBDHDR(&as_iso_in_desc);