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/*
* Line6 Linux USB driver - 0.9.1beta
*
* 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);
extern void line6_unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm);
extern void line6_unlink_wait_clear_audio_out_urbs(struct snd_line6_pcm
*line6pcm);
extern int snd_line6_playback_trigger(struct snd_line6_pcm *line6pcm, int cmd);
#endif
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