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Markus Grabner705ecec2009-02-27 19:43:04 -08001/*
Chris Rorvickc078a4a2015-01-20 02:20:50 -06002 * Line 6 Linux USB driver
Markus Grabner705ecec2009-02-27 19:43:04 -08003 *
Markus Grabner1027f4762010-08-12 01:35:30 +02004 * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
Markus Grabner705ecec2009-02-27 19:43:04 -08005 *
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.
9 *
10 */
11
12#ifndef PLAYBACK_H
13#define PLAYBACK_H
14
Markus Grabner1027f4762010-08-12 01:35:30 +020015#include <sound/pcm.h>
16
Markus Grabner705ecec2009-02-27 19:43:04 -080017#include "driver.h"
18
Markus Grabner1027f4762010-08-12 01:35:30 +020019/*
Greg Kroah-Hartman027360c2010-09-21 16:58:00 -070020 * When the TonePort is used with jack in full duplex mode and the outputs are
21 * not connected, the software monitor produces an ugly noise since everything
22 * written to the output buffer (i.e., the input signal) will be repeated in
23 * the next period (sounds like a delay effect). As a workaround, the output
24 * buffer is cleared after the data have been read, but there must be a better
25 * solution. Until one is found, this workaround can be used to fix the
26 * problem.
27 */
Markus Grabner1027f4762010-08-12 01:35:30 +020028#define USE_CLEAR_BUFFER_WORKAROUND 1
Markus Grabner705ecec2009-02-27 19:43:04 -080029
Markus Grabner705ecec2009-02-27 19:43:04 -080030extern struct snd_pcm_ops snd_line6_playback_ops;
31
Markus Grabner1027f4762010-08-12 01:35:30 +020032extern int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm);
33extern int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm);
Markus Grabner705ecec2009-02-27 19:43:04 -080034
35#endif