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-rw-r--r--libtdemid/voiceman.cpp279
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diff --git a/libtdemid/voiceman.cpp b/libtdemid/voiceman.cpp
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+/**************************************************************************
+
+ voiceman.cpp - 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/libtdemid.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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