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The C and C++ Include Header Files

/usr/include/sound/usb_stream.h


$ cat -n /usr/include/sound/usb_stream.h

     1	/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
     2	/*
     3	 * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de>
     4	 */
     5	
     6	#ifndef __SOUND_USB_STREAM_H
     7	#define __SOUND_USB_STREAM_H
     8	
     9	#define USB_STREAM_INTERFACE_VERSION 2
    10	
    11	#define SNDRV_USB_STREAM_IOCTL_SET_PARAMS \
    12		_IOW('H', 0x90, struct usb_stream_config)
    13	
    14	struct usb_stream_packet {
    15		unsigned offset;
    16		unsigned length;
    17	};
    18	
    19	
    20	struct usb_stream_config {
    21		unsigned version;
    22		unsigned sample_rate;
    23		unsigned period_frames;
    24		unsigned frame_size;
    25	};
    26	
    27	struct usb_stream {
    28		struct usb_stream_config cfg;
    29		unsigned read_size;
    30		unsigned write_size;
    31	
    32		int period_size;
    33	
    34		unsigned state;
    35	
    36		int idle_insize;
    37		int idle_outsize;
    38		int sync_packet;
    39		unsigned insize_done;
    40		unsigned periods_done;
    41		unsigned periods_polled;
    42	
    43		struct usb_stream_packet outpacket[2];
    44		unsigned		 inpackets;
    45		unsigned		 inpacket_head;
    46		unsigned		 inpacket_split;
    47		unsigned		 inpacket_split_at;
    48		unsigned		 next_inpacket_split;
    49		unsigned		 next_inpacket_split_at;
    50		struct usb_stream_packet inpacket[];
    51	};
    52	
    53	enum usb_stream_state {
    54		usb_stream_invalid,
    55		usb_stream_stopped,
    56		usb_stream_sync0,
    57		usb_stream_sync1,
    58		usb_stream_ready,
    59		usb_stream_running,
    60		usb_stream_xrun,
    61	};
    62	
    63	#endif /* __SOUND_USB_STREAM_H */