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| 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 _UAPI__SOUND_USB_STREAM_H |
| 7 | #define _UAPI__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 /* _UAPI__SOUND_USB_STREAM_H */ |
| 64 |
Warning: This file is not a C or C++ file. It does not have highlighting.