| /* 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 */ |
