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/usr/src/linux-headers-5.15.0-181/include/uapi/sound/

/usr/src/linux-headers-5.15.0-181/include/uapi/sound

Name	Size	Mode	Actions
sof/	-	0755	rm
asequencer.h	21890	0644	edit dl rm
asoc.h	22516	0644	edit dl rm
asound.h	51921	0644	edit dl rm
asound_fm.h	4377	0644	edit dl rm
compress_offload.h	6742	0644	edit dl rm
compress_params.h	18187	0644	edit dl rm
emu10k1.h	17381	0644	edit dl rm
firewire.h	3260	0644	edit dl rm
hdsp.h	2802	0644	edit dl rm
hdspm.h	5211	0644	edit dl rm
sb16_csp.h	4319	0644	edit dl rm
sfnt_info.h	7494	0644	edit dl rm
skl-tplg-interface.h	5238	0644	edit dl rm
snd_sst_tokens.h	12275	0644	edit dl rm
tlv.h	4601	0644	edit dl rm
usb_stream.h	1954	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/include/uapi/sound/usb_stream.h (1954B)

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _UAPI__SOUND_USB_STREAM_H
#define _UAPI__SOUND_USB_STREAM_H

#define USB_STREAM_INTERFACE_VERSION 2

#define SNDRV_USB_STREAM_IOCTL_SET_PARAMS \
	_IOW('H', 0x90, struct usb_stream_config)

struct usb_stream_packet {
	unsigned offset;
	unsigned length;
};

struct usb_stream_config {
	unsigned version;
	unsigned sample_rate;
	unsigned period_frames;
	unsigned frame_size;
};

struct usb_stream {
	struct usb_stream_config cfg;
	unsigned read_size;
	unsigned write_size;

int period_size;

unsigned state;

int idle_insize;
	int idle_outsize;
	int sync_packet;
	unsigned insize_done;
	unsigned periods_done;
	unsigned periods_polled;

struct usb_stream_packet outpacket[2];
	unsigned		 inpackets;
	unsigned		 inpacket_head;
	unsigned		 inpacket_split;
	unsigned		 inpacket_split_at;
	unsigned		 next_inpacket_split;
	unsigned		 next_inpacket_split_at;
	struct usb_stream_packet inpacket[0];
};

enum usb_stream_state {
	usb_stream_invalid,
	usb_stream_stopped,
	usb_stream_sync0,
	usb_stream_sync1,
	usb_stream_ready,
	usb_stream_running,
	usb_stream_xrun,
};

#endif /* _UAPI__SOUND_USB_STREAM_H */

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