rockbox/firmware/target/hosted/pcm-alsa.h
Solomon Peachy 54fcb907c1 alsa: instead of per-target tests, use HAVE_ALSA_32BIT
Affects all Sony NWZ (linux) and the fiio m3k linux targets.

Change-Id: I2fcf121bd026103d2b72332a5a52cc2b5e93949f
2021-04-08 23:02:15 -04:00

40 lines
1.5 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2016 Amaury Pouly
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef __PCM_ALSA_RB_H__
#define __PCM_ALSA_RB_H__
#include <config.h>
#if defined(HAVE_ALSA_32BIT)
/* Set the PCM volume in dB: each sample with have this volume applied digitally
* before being sent to ALSA. Volume must satisfy -43 <= dB <= 0 */
void pcm_set_mixer_volume(int vol_db_l, int vol_db_r);
#endif
/* These two should be invoked in your audiohw_preinit() call! */
void pcm_alsa_set_playback_device(const char *device);
#if defined(HAVE_RECORDING)
void pcm_alsa_set_capture_device(const char *device);
#endif
unsigned int pcm_alsa_get_rate(void);
unsigned int pcm_alsa_get_xruns(void);
#endif /* __PCM_ALSA_RB_H__ */