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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (c) 2011 Michael Sevakis
*
* 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.
*
****************************************************************************/
#if defined(CPU_ARM)
#include "arm/beep.c"
#elif defined (CPU_COLDFIRE)
#include "m68k/beep.c"
#else /* Generic */
/* Actually output samples into beep_buf */
static FORCE_INLINE void beep_generate(int16_t *out, int count,
uint32_t *phase, uint32_t step,
int16_t amplitude)
{
uint32_t ph = *phase;
do
{
int16_t amp = amplitude;
if (ph > UINT32_MAX / 2)
amp = -amp;
*out++ = amp;
*out++ = amp;
ph += step;
}
while (--count > 0);
*phase = ph;
}
#define BEEP_GENERIC
#endif /* CPU_* */
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