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Filename : usb_stream.h

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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
 */

#ifndef __SOUND_USB_STREAM_H
#define __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 /* __SOUND_USB_STREAM_H */

Name	Size	Last Modified	Owner	Permissions
intel	Dir	April 15 2025 12:26:04	root	0755
sof	Dir	April 16 2025 3:41:21	root	0755
asequencer.h	20.609 KB	April 15 2025 12:26:04	root	0644
asoc.h	21.959 KB	April 15 2025 12:26:04	root	0644
asound.h	50.02 KB	April 15 2025 12:26:04	root	0644
asound_fm.h	3.552 KB	April 15 2025 12:26:04	root	0644
compress_offload.h	5.787 KB	April 15 2025 12:26:04	root	0644
compress_params.h	16.075 KB	April 15 2025 12:26:04	root	0644
emu10k1.h	18.383 KB	April 15 2025 12:26:04	root	0644
firewire.h	10.761 KB	April 15 2025 12:26:04	root	0644
hdsp.h	2.027 KB	April 15 2025 12:26:04	root	0644
hdspm.h	4.381 KB	April 15 2025 12:26:04	root	0644
sb16_csp.h	3.479 KB	April 15 2025 12:26:04	root	0644
sfnt_info.h	6.596 KB	April 15 2025 12:26:04	root	0644
skl-tplg-interface.h	5.203 KB	April 15 2025 12:26:04	root	0644
snd_sst_tokens.h	11.479 KB	April 15 2025 12:26:04	root	0644
tlv.h	3.981 KB	April 15 2025 12:26:04	root	0644
usb_stream.h	1.21 KB	April 15 2025 12:26:04	root	0644

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