f4eb482202
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19222 a1c6a512-1295-4272-9138-f99709370657
46 lines
1.6 KiB
C
46 lines
1.6 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) 2007 by Will Robertson
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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 BACKLIGHT_THREAD_FADING_H
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#define BACKLIGHT_THREAD_FADING_H
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#include "config.h"
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#ifdef USE_BACKLIGHT_SW_FADING
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/* delay supposed to be MAX_BRIGHTNESS_SETTING*2 rounded to the next multiple
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* of 5, however not more than 40 */
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#define _FADE_DELAY (((MAX_BRIGHTNESS_SETTING*2+4)/5)*5)
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#define FADE_DELAY (HZ/(MIN(_FADE_DELAY, 40)))
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void _backlight_fade_update_state(int brightness);
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bool _backlight_fade_step(int direction);
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/* enum used for both, fading state and fading type selected through the settings */
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enum {
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NOT_FADING = 0,
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FADING_UP,
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FADING_DOWN,
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};
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#endif /* USE_BACKLIGHT_SW_FADING */
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#endif /* _BACKLIGHT_THREAD_FADING_ */
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