2 * Line6 Linux USB driver - 0.9.1beta
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, version 2.
15 #include <sound/rawmidi.h>
19 #define MIDI_BUFFER_SIZE 1024
21 struct snd_line6_midi {
23 Pointer back to the Line6 driver data structure.
25 struct usb_line6 *line6;
28 MIDI substream for receiving (or NULL if not active).
30 struct snd_rawmidi_substream *substream_receive;
33 MIDI substream for transmitting (or NULL if not active).
35 struct snd_rawmidi_substream *substream_transmit;
38 Number of currently active MIDI send URBs.
40 int num_active_send_urbs;
43 Spin lock to protect updates of send_urb.
45 spinlock_t send_urb_lock;
48 Spin lock to protect MIDI buffer handling.
50 spinlock_t midi_transmit_lock;
53 Wait queue for MIDI transmission.
55 wait_queue_head_t send_wait;
58 Bit mask for output MIDI channels.
60 int midi_mask_transmit;
63 Bit mask for input MIDI channels.
65 int midi_mask_receive;
68 Buffer for incoming MIDI stream.
70 struct MidiBuffer midibuf_in;
73 Buffer for outgoing MIDI stream.
75 struct MidiBuffer midibuf_out;
78 extern int line6_init_midi(struct usb_line6 *line6);
79 extern void line6_midi_receive(struct usb_line6 *line6, unsigned char *data,