www.pudn.com > reacTIVision-1.3.rar > MidiServer.cpp
/* reacTIVision fiducial tracking framework
MidiServer.cpp
Copyright (C) 2006 Martin Kaltenbrunner
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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 for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "MidiServer.h"
MidiServer::MidiServer(char* cfg, int device)
{
//read config from file
readConfig(cfg);
int no_devices = Pm_CountDevices();
if (no_devices==0) { std::cout << " no midi devices found!" << std::endl; return; }
if (device>no_devices) { std::cout << "invalid midi device number!" << std::endl; return; }
PmDeviceID device_id = Pm_GetDefaultOutputDeviceID();
if ((device>=0) && (device<=no_devices)) {
device_id = (PmDeviceID)device;
const PmDeviceInfo *info = Pm_GetDeviceInfo( device_id );
if (info->input) { std::cout << "invalid midi device number!" << std::endl; return; }
}
const PmDeviceInfo *info = Pm_GetDeviceInfo(device_id);
std::cout << "opening midi device: " << info->name << std::endl;
Pm_Initialize();
Pt_Start(1,0,0);
Pm_OpenOutput(&midi_out,device_id,NULL,0,NULL,NULL,0);
}
void MidiServer::listDevices()
{
int no_devices = Pm_CountDevices();
int out_devices = 0;
for (int i=0;ioutput) out_devices++;
}
if (out_devices==0) {
std::cout << "no midi out devices found!" << std::endl;
return;
} else if (out_devices==1) std::cout << "1 midi out device found:" << std::endl;
else std::cout << out_devices << " midi out devices found:" << std::endl;
for (int i=0;ioutput) std::cout << "\t" << i << ": " << info->name << std::endl;
}
}
void MidiServer::readConfig(char* cfg) {
TiXml::TiXmlDocument document( cfg );
document.LoadFile();
if( document.Error() )
{
std::cout << "Error loading MIDI configuration file: " << cfg << std::endl;
return;
}
TiXml::TiXmlHandle docHandle( &document );
TiXml::TiXmlElement* map = docHandle.FirstChild("midi").FirstChild("map").Element();
while (map) {
mapping m={0,0,0,0,0.0,0.0,0.0,0};
if( map->Attribute("fiducial")!=NULL ) m.f_id = atoi(map->Attribute("fiducial"));
else { std::cout << "missing 'fiducial' atribute in MIDI configuration file" << std::endl; return; }
if( map->Attribute("type")!=NULL ) {
if ( strcmp( map->Attribute("type"), "hfader" ) == 0 ) m.dimension=XPOS;
if ( strcmp( map->Attribute("type"), "vfader" ) == 0 ) m.dimension=YPOS;
if ( strcmp( map->Attribute("type"), "knob" ) == 0 ) m.dimension=ANGLE;
if ( strcmp( map->Attribute("type"), "note" ) == 0 ) m.dimension=PRESENCE;
}
else { std::cout << "missing 'type' atribute in MIDI configuration file" << std::endl; return; }
if( map->Attribute("channel")!=NULL ) m.channel = atoi(map->Attribute("channel")) + 0xB0;
else m.channel = 0xB0;
if( map->Attribute("control")!=NULL ) {
m.control = atoi(map->Attribute("control"));
if( map->Attribute("min")!=NULL ) {
m.min = atof(map->Attribute("min"));
if (m.dimension==ANGLE) m.min*=2*M_PI;
} else m.min = 0.0;
if( map->Attribute("max")!=NULL ) {
m.max = atof(map->Attribute("max"));
if (m.dimension==ANGLE) m.max*=2*M_PI;
} else m.max = 1.0;
m.range = m.max - m.min;
} else if( map->Attribute("note")!=NULL ) m.control = atoi(map->Attribute("note"));
else { std::cout << "missing 'control' ore 'note' atribute in MIDI configuration file" << std::endl; return; }
m.value = 0;
mapping_list.push_back(m);
map = map->NextSiblingElement( "map" );
}
/*for(std::list::iterator map = mapping_list.begin(); map!=mapping_list.end(); map++) {
std::cout << map->f_id << " " << map->dimension << " " << map->channel << " " << map->control << " "<< map->min << " " << map->max << std::endl;
}*/
}
/*
void MidiServer::readConfig(char* cfg) {
char line[128];
std::fstream infile(cfg,std::ios::in);
while (!infile.eof()) {
infile.getline(line,128);
if ( (strstr(line,"#")==NULL) && (strstr(line,":")!=NULL) ) {
//std::cout << line << std::endl;
mapping m;
char* value = strtok(line,":");
if (value!=NULL) m.f_id = atoi(value);
else { std::cout << "syntax error in line: " << line << std::endl; continue; }
value = strtok(NULL,":");
if (value!=NULL) m.dimension = atoi(value);
else { std::cout << "syntax error in line: " << line << std::endl; continue; }
value = strtok(NULL,":");
if (value!=NULL) m.channel = atoi(value) + 0xB0;
else { std::cout << "syntax error in line: " << line << std::endl; continue; }
value = strtok(NULL,":");
if (value!=NULL) m.control = atoi(value);
else { std::cout << "syntax error in line: " << line << std::endl; continue; }
value = strtok(NULL,":");
if (value!=NULL) m.min = atof(value);
else { std::cout << "syntax error in line: " << line << std::endl; continue; }
value = strtok(NULL,":");
if (value!=NULL) m.max = atof(value);
else { std::cout << "syntax error in line: " << line << std::endl; continue; }
m.range = m.max - m.min;
m.value = 0;
mapping_list.push_back(m);
}
}
infile.close();
//std::cout << "file closed" << std::endl;
for(std::list::iterator map = mapping_list.begin(); map!=mapping_list.end(); map++) {
std::cout << map->f_id << " " << map->dimension << " " << map->channel << " " << map->control << " "<< map->min << " " << map->max << std::endl;
}
}*/
void MidiServer::sendControlMessage(int f_id, float xpos, float ypos, float angle)
{
if(invert_x) xpos=1-xpos;
if(invert_y) ypos=1-ypos;
if(invert_a) angle=TWO_PI-angle;
for(std::list::iterator map = mapping_list.begin(); map!=mapping_list.end(); map++) {
if (map->f_id==f_id) {
switch (map->dimension) {
case XPOS:
if ((xpos>=map->min) && (xpos<=map->max)) {
map->value = (int)(((xpos - map->min)/map->range)*127);
Pm_WriteShort(midi_out,0,Pm_Message((char)map->channel,(char)map->control, (char)map->value));
}
break;
case YPOS:
if ((ypos>=map->min) && (ypos<=map->max)) {
map->value = (int)(((map->max - ypos)/map->range)*127);
Pm_WriteShort(midi_out,0,Pm_Message((char)map->channel,(char)map->control, (char)map->value));
}
break;
case ANGLE:
if ((angle>=map->min) && (angle<=map->max)) {
map->value = (int)(((angle - map->min)/map->range)*127);
Pm_WriteShort(midi_out,0,Pm_Message((char)map->channel,(char)map->control, (char)map->value));
}
break;
}
}
}
}
void MidiServer::sendAddMessage(int f_id)
{
for(std::list::iterator map = mapping_list.begin(); map!=mapping_list.end(); map++) {
if ((map->f_id==f_id) && (map->dimension==PRESENCE)) {
Pm_WriteShort(midi_out,0,Pm_Message(NOTE_ON,(char)map->control,127));
//else Pm_WriteShort(midi_out,0,Pm_Message((char)map->channel,(char)map->control,(char)0));
}
}
}
void MidiServer::sendRemoveMessage(int f_id)
{
for(std::list::iterator map = mapping_list.begin(); map!=mapping_list.end(); map++) {
if ((map->f_id==f_id) && (map->dimension==PRESENCE)) {
Pm_WriteShort(midi_out,0,Pm_Message(NOTE_OFF,(char)map->control,127));
//else Pm_WriteShort(midi_out,0,Pm_Message((char)map->channel,(char)map->control,(char)0));
}
}
}
void MidiServer::sendNullMessages()
{
for(std::list::iterator map = mapping_list.begin(); map!=mapping_list.end(); map++) {
if (map->dimension==PRESENCE) Pm_WriteShort(midi_out,0,Pm_Message(NOTE_OFF,(char)map->control,127));
else Pm_WriteShort(midi_out,0,Pm_Message((char)map->channel,(char)map->control,(char)0) );
}
}
MidiServer::~MidiServer()
{
// terminate MIDI
Pm_Close(midi_out);
Pm_Terminate();
}