/*************************************************************************** * __________ __ ___ * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50 * Copyright (C) 2014 by Mario Basister: iBasso DX90 port * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features * * 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 _CODEC_DX50_H_ #define _CODEC_DX50_H_ #define AUDIOHW_CAPS (MONO_VOL_CAP | FILTER_ROLL_OFF_CAP) /* http://www.wolfsonmicro.com/media/76425/WM8740.pdf 0.5 * ( x - 255 ) = ydB 1 <= x <= 255 mute x = 0 x = 255 -> 0dB . . . x = 2 -> -126.5dB x = 1 -> -127dB x = 0 -> -128dB See audiohw.h, sound.c. */ AUDIOHW_SETTING(VOLUME, "dB", 0, 1, -128, 0, -30) /* 1: slow roll off, 0: sharp roll off, sharp roll off default */ AUDIOHW_SETTING(FILTER_ROLL_OFF, "", 0, 1, 0, 1, 0) #endif