56 lines
1.7 KiB
C
56 lines
1.7 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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#ifndef _CODEC_DX50_H_
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#define _CODEC_DX50_H_
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#define AUDIOHW_CAPS (MONO_VOL_CAP | FILTER_ROLL_OFF_CAP)
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/*
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http://www.wolfsonmicro.com/media/76425/WM8740.pdf
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0.5 * ( x - 255 ) = ydB 1 <= x <= 255
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mute x = 0
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x = 255 -> 0dB
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.
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.
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.
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x = 2 -> -126.5dB
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x = 1 -> -127dB
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x = 0 -> -128dB
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See audiohw.h, sound.c.
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*/
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AUDIOHW_SETTING(VOLUME, "dB", 0, 1, -128, 0, -30)
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/* 1: slow roll off, 0: sharp roll off, sharp roll off default */
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AUDIOHW_SETTING(FILTER_ROLL_OFF, "", 0, 1, 0, 1, 0)
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#endif
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