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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 135 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081036.435762997@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
32 lines
966 B
C
32 lines
966 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Line 6 Linux USB driver
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*
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* Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
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*/
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#ifndef PLAYBACK_H
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#define PLAYBACK_H
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#include <sound/pcm.h>
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#include "driver.h"
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/*
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* When the TonePort is used with jack in full duplex mode and the outputs are
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* not connected, the software monitor produces an ugly noise since everything
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* written to the output buffer (i.e., the input signal) will be repeated in
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* the next period (sounds like a delay effect). As a workaround, the output
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* buffer is cleared after the data have been read, but there must be a better
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* solution. Until one is found, this workaround can be used to fix the
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* problem.
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*/
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#define USE_CLEAR_BUFFER_WORKAROUND 1
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extern const struct snd_pcm_ops snd_line6_playback_ops;
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extern int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm);
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extern int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm);
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#endif
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