f@5: /*
f@5: 
f@5:  Copyright (C) 2016  Queen Mary University of London 
f@5:  Author: Fiore Martin
f@5: 
f@5:  This file is part of Collidoscope.
f@5:  
f@5:  Collidoscope is free software: you can redistribute it and/or modify
f@5:  it under the terms of the GNU General Public License as published by
f@5:  the Free Software Foundation, either version 3 of the License, or
f@5:  (at your option) any later version.
f@5: 
f@5:  This program is distributed in the hope that it will be useful,
f@5:  but WITHOUT ANY WARRANTY; without even the implied warranty of
f@5:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
f@5:  GNU General Public License for more details.
f@5: 
f@5:  You should have received a copy of the GNU General Public License
f@5:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
f@5: */
f@5: 
f@0: #include "Config.h"
f@0: 
f@0: 
f@0: #include "cinder/Exception.h"
f@0: #include "boost/algorithm/string/trim.hpp"
f@0: 
f@0: using ci::DataSourceRef;
f@0: using ci::XmlTree;
f@0: using ci::loadFile;
f@0: 
f@0: 
f@0: Config::Config() :
f@0:     mAudioInputDeviceKey( "" ),
f@0:     mNumChunks(150),
f@0:     mWaveLen(2.0)
f@0: {
f@0: 
f@0: }
f@0: 
f@2: // uses Cinder api to parse configuration in XML file 
f@0: void Config::loadFromFile( std::string&& path )
f@0: {
f@0:     try {
f@0:         XmlTree doc( loadFile( path ) );
f@0: 
f@0:         XmlTree collidoscope = doc.getChild( "collidoscope" );
f@0: 
f@0:         // audio input device 
f@0:         mAudioInputDeviceKey = collidoscope.getChild( "audioInputDeviceKey" ).getValue();
f@0:         boost::trim( mAudioInputDeviceKey );
f@0: 
f@0:         // wave len in seconds 
f@0:         std::string waveLenStr = collidoscope.getChild("wave_len").getValue();
f@0:         boost::trim(waveLenStr);
f@0:         mWaveLen = ci::fromString<double>(waveLenStr);
f@0: 
f@0:         // channel for each wave 
f@0:         XmlTree waves = collidoscope.getChild( "waves" );
f@0: 
f@0:         for ( int i = 0; i < NUM_WAVES; i++ ){
f@0:             for ( auto &wave : waves.getChildren() ){
f@0:                 int id = ci::fromString<int>( wave->getAttribute( "id" ) );
f@0:                 if ( id == i ){
f@0:                     parseWave( *wave, id );
f@0:                     break;
f@0:                 }
f@0:             }
f@0:         }
f@0: 
f@0:     }
f@0:     catch ( std::exception &e ) {
f@0:         throw ci::Exception( e.what() );
f@0:     }
f@0:     
f@0: 
f@0: 
f@0: }
f@0: 
f@0: // thows exception captured in loadFromFile 
f@0: void Config::parseWave( const XmlTree &wave, int id )
f@0: {
f@0:     // midi channel 
f@0:     std::string midiChannelStr = wave.getChild( "midiChannel" ).getValue();
f@0:     boost::trim( midiChannelStr );
f@0: 
f@0:     mMidiChannels[id] = ci::fromString<size_t>( midiChannelStr );
f@0: 
f@0: }