diff options
Diffstat (limited to 'drivers/staging/line6/playback.h')
| -rw-r--r-- | drivers/staging/line6/playback.h | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/drivers/staging/line6/playback.h b/drivers/staging/line6/playback.h index db1e48b..8b8b974 100644 --- a/drivers/staging/line6/playback.h +++ b/drivers/staging/line6/playback.h @@ -1,7 +1,7 @@ /* - * Line6 Linux USB driver - 0.8.0 + * Line6 Linux USB driver - 0.9.0 * - * Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at) + * 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 @@ -13,18 +13,29 @@ #define PLAYBACK_H -#include "driver.h" - #include <sound/pcm.h> +#include "driver.h" -extern struct snd_pcm_ops snd_line6_playback_ops; + +/* + 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 int create_audio_out_urbs(struct snd_line6_pcm *line6pcm); -extern int snd_line6_playback_trigger(struct snd_pcm_substream *substream, - int cmd); -extern void unlink_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm); +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 |