| /* |
| * Line 6 Linux USB driver |
| * |
| * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) |
| * |
| * 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, version 2. |
| * |
| */ |
| |
| #ifndef MIDI_H |
| #define MIDI_H |
| |
| #include <sound/rawmidi.h> |
| |
| #include "midibuf.h" |
| |
| #define MIDI_BUFFER_SIZE 1024 |
| |
| struct snd_line6_midi { |
| /* Pointer back to the Line 6 driver data structure */ |
| struct usb_line6 *line6; |
| |
| /* MIDI substream for receiving (or NULL if not active) */ |
| struct snd_rawmidi_substream *substream_receive; |
| |
| /* MIDI substream for transmitting (or NULL if not active) */ |
| struct snd_rawmidi_substream *substream_transmit; |
| |
| /* Number of currently active MIDI send URBs */ |
| int num_active_send_urbs; |
| |
| /* Spin lock to protect MIDI buffer handling */ |
| spinlock_t lock; |
| |
| /* Wait queue for MIDI transmission */ |
| wait_queue_head_t send_wait; |
| |
| /* Buffer for incoming MIDI stream */ |
| struct midi_buffer midibuf_in; |
| |
| /* Buffer for outgoing MIDI stream */ |
| struct midi_buffer midibuf_out; |
| }; |
| |
| extern int line6_init_midi(struct usb_line6 *line6); |
| extern void line6_midi_receive(struct usb_line6 *line6, unsigned char *data, |
| int length); |
| |
| #endif |