synsetvol.c
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/*====================================================================
* synsetvol.c
*
* Copyright 1995, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics,
* Inc.; the contents of this file may not be disclosed to third
* parties, copied or duplicated in any form, in whole or in part,
* without the prior written permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to
* restrictions as set forth in subdivision (c)(1)(ii) of the Rights
* in Technical Data and Computer Software clause at DFARS
* 252.227-7013, and/or in similar or successor clauses in the FAR,
* DOD or NASA FAR Supplement. Unpublished - rights reserved under the
* Copyright Laws of the United States.
*====================================================================*/
#include "synthInternals.h"
#include <os_internal.h>
#include <ultraerror.h>
void alSynSetVol(ALSynth *synth, ALVoice *v, s16 volume, ALMicroTime t)
{
ALParam *update;
ALFilter *f;
if (v->pvoice) {
/*
* get new update struct from the free list
*/
update = __allocParam();
ALFailIf(update == 0, ERR_ALSYN_NO_UPDATE);
/*
* set offset and volume data
*/
update->delta = synth->paramSamples + v->pvoice->offset;
update->type = AL_FILTER_SET_VOLUME;
update->data.i = volume;
update->moredata.i = _timeToSamples(synth, t);
update->next = 0;
f = v->pvoice->channelKnob;
(*f->setParam)(f, AL_FILTER_ADD_UPDATE, update);
}
}