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/*
ZynAddSubFX - a software synthesizer
ALSAMidiIn.C - Midi input for ALSA (this creates an ALSA virtual port)
Copyright (C) 2002-2005 Nasca Octavian Paul
Author: Nasca Octavian Paul
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License
as published by the Free Software Foundation.
This program 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 General Public License (version 2) for more details.
You should have received a copy of the GNU General Public License (version 2)
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ALSAMidiIn.h"
#include <stdlib.h>
#include <stdio.h>
ALSAMidiIn::ALSAMidiIn(){
int alsaport;
inputok=0;
char portname[50];
sprintf(portname,"ZynAddSubFX");
midi_handle=NULL;
if (snd_seq_open(&midi_handle,"default",SND_SEQ_OPEN_INPUT,0)!=0) return;
snd_seq_set_client_name(midi_handle,"ZynAddSubFX");//thanks to Frank Neumann
alsaport = snd_seq_create_simple_port(midi_handle,portname
,SND_SEQ_PORT_CAP_WRITE | SND_SEQ_PORT_CAP_SUBS_WRITE
,SND_SEQ_PORT_TYPE_SYNTH);
if (alsaport<0) return;
inputok=1;
};
ALSAMidiIn::~ALSAMidiIn(){
snd_seq_close(midi_handle);
};
/*
* Get the midi command,channel and parameters
*/
void ALSAMidiIn::getmidicmd(MidiCmdType &cmdtype,unsigned char &cmdchan,int *cmdparams){
snd_seq_event_t *midievent=NULL;
cmdtype=MidiNull;
if (inputok==0){
return;
};
snd_seq_event_input(midi_handle,&midievent);
if (midievent==NULL) return;
switch (midievent->type){
case SND_SEQ_EVENT_NOTEON:
cmdtype=MidiNoteON;
cmdchan=midievent->data.note.channel;
cmdparams[0]=midievent->data.note.note;
cmdparams[1]=midievent->data.note.velocity;
break;
case SND_SEQ_EVENT_NOTEOFF:
cmdtype=MidiNoteOFF;
cmdchan=midievent->data.note.channel;
cmdparams[0]=midievent->data.note.note;
break;
case SND_SEQ_EVENT_PITCHBEND:
cmdtype=MidiController;
cmdchan=midievent->data.control.channel;
cmdparams[0]=C_pitchwheel;//Pitch Bend
cmdparams[1]=midievent->data.control.value;
break;
case SND_SEQ_EVENT_CONTROLLER:
cmdtype=MidiController;
cmdchan=midievent->data.control.channel;
cmdparams[0]=getcontroller(midievent->data.control.param);
cmdparams[1]=midievent->data.control.value;
//fprintf(stderr,"t=%d val=%d\n",midievent->data.control.param,midievent->data.control.value);
break;
};
};
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