mirror of https://gitee.com/openkylin/linux.git
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/*
|
|
* 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 PLAYBACK_H
|
|
#define PLAYBACK_H
|
|
|
|
#include <sound/pcm.h>
|
|
|
|
#include "driver.h"
|
|
|
|
/*
|
|
* When the TonePort is used with jack in full duplex mode and the outputs are
|
|
* not connected, the software monitor produces an ugly noise since everything
|
|
* written to the output buffer (i.e., the input signal) will be repeated in
|
|
* the next period (sounds like a delay effect). As a workaround, the output
|
|
* buffer is cleared after the data have been read, but there must be a better
|
|
* solution. Until one is found, this workaround can be used to fix the
|
|
* problem.
|
|
*/
|
|
#define USE_CLEAR_BUFFER_WORKAROUND 1
|
|
|
|
extern struct snd_pcm_ops snd_line6_playback_ops;
|
|
|
|
extern int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm);
|
|
extern int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm);
|
|
|
|
#endif
|