d73c20933b
- A 10 Band EQ for Rockbox w/ presets adapted from VLC - frequency stepping at 32, 64, 125, 250, 500 1K, 2K, 4K, 8K, 16K Change-Id: I85ad84d70a534edfc66c6ad9af8a76f022a02ec7 Reviewed-on: http://gerrit.rockbox.org/386 Reviewed-by: Jonathan Gordon <rockbox@jdgordon.info>
42 lines
1.5 KiB
C
42 lines
1.5 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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* $Id$
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*
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* Copyright (C) 2006-2007 Thom Johansen
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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 _EQ_H
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#define _EQ_H
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/* => support from 3 to 32 bands, inclusive
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* Menus and screens must be updated to support changing this from 5
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* without modifying other stuff (remove comment when this is no longer
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* true :-) */
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#define EQ_NUM_BANDS 10
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struct eq_band_setting
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{
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int cutoff; /* Hz */
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int q;
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int gain; /* +/- dB */
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};
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/** DSP interface **/
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void dsp_set_eq_precut(int precut);
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void dsp_set_eq_coefs(int band, const struct eq_band_setting *setting);
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void dsp_eq_enable(bool enable);
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#endif /* _EQ_H */
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