voiceman.cc
/**************************************************************************
voiceman.cc - The VoiceManager class handles a set of voices for synths
This file is part of LibKMid 0.9.5
Copyright (C) 1997,98,99,2000 Antonio Larrosa Jimenez
LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
***************************************************************************/
#include "voiceman.h"
#include <stdio.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
VoiceManager::VoiceManager(int totalvoices)
{
nvoices=totalvoices;
FirstVoice=new voice;
FirstVoice->id=0;
FirstVoice->channel=0;
FirstVoice->note=0;
FirstVoice->used=0;
FirstVoice->prev=NULL;
voice *ptrb=FirstVoice;
voice *ptr=NULL;
int i;
for (i=1;i<nvoices;i++)
{
ptr=new voice;
ptrb->next=ptr;
ptr->id=i;
ptr->channel=0;
ptr->note=0;
ptr->used=0;
ptr->prev=ptrb;
ptrb=ptr;
}
LastVoice=ptr;
LastVoice->next=NULL;
LastnotusedVoice=LastVoice;
VoiceList=new voice *[nvoices];
ptr=FirstVoice;
for (i=0;i<nvoices;i++)
{
VoiceList[i]=ptr;
ptr=ptr->next;
}
searcher_aid=new voice;
}
VoiceManager::~VoiceManager()
{
voice *ptr=FirstVoice;
voice *ptr2;
while (ptr!=NULL)
{
ptr2=ptr->next;
delete ptr;
ptr=ptr2;
}
FirstVoice=NULL;
LastVoice=NULL;
LastnotusedVoice=NULL;
delete [] VoiceList;
VoiceList=NULL;
delete searcher_aid;
}
void VoiceManager::clearLists(void)
{
#ifdef VOICEMANDEBUG
printf("voicemanager::cleanLists\n");
#endif
voice *ptr=FirstVoice;
voice *ptr2=FirstVoice;
while (ptr!=NULL)
{
ptr->used=0;
ptr2=ptr;
ptr=ptr->next;
}
LastVoice=ptr2;
LastnotusedVoice=ptr2;
}
int VoiceManager::allocateVoice(int chn,int key)
{
// First, we take the allocated voice out of the first place of the list
if ((LastnotusedVoice!=NULL)&&(LastnotusedVoice->id==FirstVoice->id))
{
#ifdef VOICEMANDEBUG
printf("Used last voice !\n");
#endif
LastnotusedVoice=NULL;
}
voice *newvoice=FirstVoice;
FirstVoice=FirstVoice->next;
FirstVoice->prev=NULL;
#ifdef VOICEMANDEBUG
printf("Allocating id :%d\n",newvoice->id);
#endif
// then we put the allocated voice at the end of the list
LastVoice->next=newvoice;
newvoice->prev=LastVoice;
LastVoice=newvoice;
LastVoice->next=NULL;
newvoice->channel=chn;
newvoice->note=key;
#ifdef VOICEMANDEBUG
if (newvoice->used==1)
{
printf("Replacing voice : %d\n",newvoice->id);
}
#endif
newvoice->used=1;
//dispStat();
return newvoice->id;
}
void VoiceManager::deallocateVoice(int id)
{
voice *delvoice=VoiceList[id];
#ifdef VOICEMANDEBUG
printf("Deallocating id :%d\n",id);
#endif
if (delvoice->id==LastVoice->id)
{
LastVoice=delvoice->prev;
LastVoice->next=NULL;
if (LastnotusedVoice==NULL)
{
delvoice->next=FirstVoice;
FirstVoice->prev=delvoice;
FirstVoice=delvoice;
FirstVoice->prev=NULL;
LastnotusedVoice=FirstVoice;
}
else
{
if (LastnotusedVoice->next==NULL)
{
LastnotusedVoice->next=delvoice;
delvoice->prev=LastnotusedVoice;
delvoice->next=NULL;
LastnotusedVoice=delvoice;
LastVoice=delvoice;
}
else
{
delvoice->next=LastnotusedVoice->next;
delvoice->next->prev=delvoice;
delvoice->prev=LastnotusedVoice;
LastnotusedVoice->next=delvoice;
LastnotusedVoice=delvoice;
}
}
}
else
{
if (delvoice->prev!=NULL)
{
delvoice->prev->next=delvoice->next;
delvoice->next->prev=delvoice->prev;
if (LastnotusedVoice==NULL)
{
delvoice->next=FirstVoice;
FirstVoice->prev=delvoice;
FirstVoice=delvoice;
FirstVoice->prev=NULL;
LastnotusedVoice=FirstVoice; }
else
{
if (LastnotusedVoice->next==NULL)
{
LastnotusedVoice->next=delvoice;
delvoice->prev=LastnotusedVoice;
delvoice->next=NULL;
LastnotusedVoice=delvoice;
LastVoice=delvoice;
}
else
{
delvoice->next=LastnotusedVoice->next;
delvoice->next->prev=delvoice;
delvoice->prev=LastnotusedVoice;
LastnotusedVoice->next=delvoice;
LastnotusedVoice=delvoice;
}
}
}
}
delvoice->used=0;
// dispStat();
}
void VoiceManager::initSearch(void)
{
searcher=searcher_aid;
searcher_aid->prev=LastVoice;
}
int VoiceManager::search(int chn)
{
if (searcher==NULL) return -1;
searcher=searcher->prev;
while (searcher!=NULL)
{
if (searcher->used==0) return -1;
if (searcher->channel==chn)
{
return searcher->id;
}
searcher=searcher->prev;
}
return -1;
}
int VoiceManager::search(int chn,int note)
{
if (searcher==NULL) return -1;
searcher=searcher->prev;
while ((searcher!=NULL))
{
if (searcher->used==0) return -1;
if ((searcher->channel==chn)&&(searcher->note==note))
{
return searcher->id;
}
searcher=searcher->prev;
}
return -1;
}
/*
void VoiceManager::dispStat(void)
{
#ifdef VOICEMANDEBUG
printf("Stats\n");
voice *ptr=FirstVoice;
while (ptr!=NULL)
{
printf("Voice %d is %s\n",ptr->id,(ptr->used==0)?("off"):("on"));
ptr=ptr->next;
}
if (LastnotusedVoice!=NULL) printf("LnuV = %d\n",LastnotusedVoice->id);
#endif
}
*/

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