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