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proc
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3
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task
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3
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root
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usr
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include
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sound
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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> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #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 */