midistat.cc

00001 /**************************************************************************
00002 
00003     midistat.cc - class MidiStatus, change it internally and then send it. 
00004     This file is part of LibKMid 0.9.5
00005     Copyright (C) 1997,98,99,2000  Antonio Larrosa Jimenez
00006     LibKMid's homepage : http://www.arrakis.es/~rlarrosa/libkmid.html            
00007 
00008     This library is free software; you can redistribute it and/or
00009     modify it under the terms of the GNU Library General Public
00010     License as published by the Free Software Foundation; either
00011     version 2 of the License, or (at your option) any later version.
00012  
00013     This library is distributed in the hope that it will be useful,
00014     but WITHOUT ANY WARRANTY; without even the implied warranty of
00015     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016     Library General Public License for more details.
00017  
00018     You should have received a copy of the GNU Library General Public License
00019     along with this library; see the file COPYING.LIB.  If not, write to
00020     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00021     Boston, MA 02110-1301, USA.
00022 
00023     Send comments and bug fixes to Antonio Larrosa <larrosa@kde.org>
00024 
00025 ***************************************************************************/
00026 #include "midistat.h"
00027 #include "deviceman.h"
00028 #include "sndcard.h"
00029 
00030 #ifdef HAVE_CONFIG_H
00031 #include <config.h>
00032 #endif
00033 
00034 extern int MT32toGM[128];
00035 
00036 MidiStatus::MidiStatus()
00037 {
00038   int i;
00039   tempo=1000000;
00040   for (int chn=0;chn<16;chn++)
00041   {
00042     chn_patch[chn]=0;
00043     chn_bender[chn]=0x4000;
00044     chn_pressure[chn]=127;
00045     for (i=0;i<256;i++)
00046       chn_controller[chn][i]=0;
00047     chn_controller[chn][CTL_MAIN_VOLUME]=127;
00048     chn_controller[chn][11]=127;
00049     chn_controller[chn][0x4a]=127;
00050     chn_lastisvolumeev[chn]=1;
00051   }
00052 }
00053 
00054 MidiStatus::~MidiStatus()
00055 {
00056 }
00057 
00058 //    void noteOn   ( uchar chn, uchar note, uchar vel );
00059 //    void noteOff  ( uchar chn, uchar note, uchar vel );
00060 
00061 void MidiStatus::chnPatchChange ( uchar chn, uchar patch )
00062 {
00063   chn_patch[chn]=patch;
00064 }
00065 
00066 void MidiStatus::chnPressure    ( uchar chn, uchar vel )
00067 {
00068   chn_pressure[chn]=vel;
00069 }
00070 
00071 void MidiStatus::chnPitchBender ( uchar chn, uchar lsb,  uchar msb )
00072 {
00073   chn_bender[chn]=((int)msb<<8|lsb);
00074 }
00075 
00076 void MidiStatus::chnController  ( uchar chn, uchar ctl , uchar v )
00077 {
00078   if (ctl==7) chn_lastisvolumeev[chn]=1;
00079   else if (ctl==11) chn_lastisvolumeev[chn]=0;
00080 
00081   chn_controller[chn][ctl]=v;
00082 }
00083 
00084 void MidiStatus::tmrSetTempo(int v)
00085 {
00086   tempo=v;
00087 }
00088 
00089 void MidiStatus::sendData(DeviceManager *midi,int gm)
00090 {
00091   for (int chn=0;chn<16;chn++)
00092   {
00093 #ifdef MIDISTATDEBUG
00094     printf("Restoring channel %d\n",chn);
00095 #endif
00096     midi->chnPatchChange(chn,
00097     (gm==1)?(chn_patch[chn]):(MT32toGM[chn_patch[chn]]));
00098     midi->chnPitchBender(chn,chn_bender[chn]&0xFF,chn_bender[chn]>>8);
00099     midi->chnPressure(chn,chn_pressure[chn]);
00100     if (chn_lastisvolumeev[chn])
00101     {
00102       midi->chnController(chn,11,chn_controller[chn][11]);
00103       midi->chnController(chn,CTL_MAIN_VOLUME,chn_controller[chn][CTL_MAIN_VOLUME]);
00104     } else {
00105       midi->chnController(chn,CTL_MAIN_VOLUME,chn_controller[chn][CTL_MAIN_VOLUME]);
00106       midi->chnController(chn,11,chn_controller[chn][11]);
00107     }
00108     /*
00109        for (int i=0;i<256;i++)
00110        midi->chnController(chn,i,chn_controller[chn][i]);
00111      */
00112   }
00113   midi->tmrSetTempo(tempo);
00114   midi->sync();
00115 }
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