| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Line 6 Linux USB driver |
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| 4 | * |
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| 5 | * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef PLAYBACK_H |
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| 9 | #define PLAYBACK_H |
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| 10 | |
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| 11 | #include <sound/pcm.h> |
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| 12 | |
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| 13 | #include "driver.h" |
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| 14 | |
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| 15 | /* |
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| 16 | * When the TonePort is used with jack in full duplex mode and the outputs are |
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| 17 | * not connected, the software monitor produces an ugly noise since everything |
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| 18 | * written to the output buffer (i.e., the input signal) will be repeated in |
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| 19 | * the next period (sounds like a delay effect). As a workaround, the output |
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| 20 | * buffer is cleared after the data have been read, but there must be a better |
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| 21 | * solution. Until one is found, this workaround can be used to fix the |
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| 22 | * problem. |
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| 23 | */ |
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| 24 | #define USE_CLEAR_BUFFER_WORKAROUND 1 |
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| 25 | |
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| 26 | extern const struct snd_pcm_ops snd_line6_playback_ops; |
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| 27 | |
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| 28 | extern int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm); |
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| 29 | extern int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm); |
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| 30 | |
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| 31 | #endif |
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| 32 | |
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