82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/***************************************************************************
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* __________ __ ___
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
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* Copyright (C) 2014 by Mario Basister: iBasso DX90 port
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* Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
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* Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "debug.h"
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#include "pcm_sw_volume.h"
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#include "settings.h"
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#include "debug-ibasso.h"
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#include "pcm-ibasso.h"
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void audiohw_close(void)
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{
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TRACE;
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pcm_close_device();
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}
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void set_software_volume(void)
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{
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/* -73dB (?) minimum software volume in decibels. See pcm-internal.h. */
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static const int SW_VOLUME_MIN = 730;
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int sw_volume_l = 0;
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int sw_volume_r = 0;
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if(global_settings.balance > 0)
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{
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if(global_settings.balance == 100)
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{
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sw_volume_l = PCM_MUTE_LEVEL;
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}
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else
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{
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sw_volume_l -= SW_VOLUME_MIN * global_settings.balance / 100;
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}
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}
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else if(global_settings.balance < 0)
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{
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if(global_settings.balance == -100)
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{
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sw_volume_r = PCM_MUTE_LEVEL;
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}
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else
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{
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sw_volume_r = SW_VOLUME_MIN * global_settings.balance / 100;
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}
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}
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DEBUGF("DEBUG %s: global_settings.balance: %d, sw_volume_l: %d, sw_volume_r: %d.",
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__func__,
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global_settings.balance,
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sw_volume_l,
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sw_volume_r);
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/* Emulate balance with software volume. */
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pcm_set_master_volume(sw_volume_l, sw_volume_r);
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}
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