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#ifdef CONFIG_OSS_VMIX_FLOAT
/*
* Purpose: Local output buffer to device export routine for vmix (FP version)
*/
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This this source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
*/
int i, ch, och;
double vol;
vol = vmix_db_table[eng->outvol / 5];
for (ch = 0; ch < channels; ch++)
{
double vu;
float *chbuf;
och = eng->channel_order[ch];
op = (SAMPLE_TYPE *) outbuf;
op += och;
chbuf = chbufs[ch];
vu = eng->vu[och % 2];
vu = vu / 255.0;
for (i = 0; i < samples; i++)
{
double tmp;
#if 0 && defined(SINE_DEBUG)
tmp = sine_table[sine_phase[ch]];
sine_phase[ch] = (sine_phase[ch] + 1 + ch / 2) % SINE_SIZE;
#else
tmp = *chbuf++;
#endif
tmp *= vol;
/*
* Check for clipping. Decrease volume if necessary.
*/
if (tmp < -1.0)
{
vol /= -tmp;
eng->outvol--;
tmp = -1.0;
}
else if (tmp > 1.0)
{
vol /= tmp;
eng->outvol--;
tmp = 1.0;
}
*op = VMIX_BYTESWAP ((SAMPLE_TYPE) (tmp * SAMPLE_RANGE));
op += channels;
/* VU meter */
if (tmp < 0.0)
tmp = -tmp;
if (tmp > vu)
vu = tmp;
}
if (och < 2)
{
vu = vu * 255.0;
eng->vu[och] = (int)vu;
}
}
#else
#include "outexport_int.inc"
#endif
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