mbed_dtmf_generator.cpp

00001 #include "mbed_dtmf_generator.hpp"
00002 #include "snd_wave_generator/SineWave.h"
00003 #include "snd_wave_generator/WaveCombo.h"
00004 #include <iostream>
00005 #include <sstream>
00006 #include <string>
00007 
00008 using namespace snd_wave_generator;
00009 
00010 MbedDtmfGenerator::MbedDtmfGenerator() :
00011     generator(16000)
00012 {
00013     std::cout << "Init Wave" << "\r" << std::endl;     
00014     makeWaves();
00015 }
00016 
00017 void MbedDtmfGenerator::makeKeyWave(int pos, int row, int col)
00018 {
00019     std::cout << "Init Key Wave #" << pos << " R" << row << "C" << col << "\r" << std::endl;     
00020     std::auto_ptr<WaveCombo> wave(new WaveCombo());
00021     wave->add(colWaves[col].get());
00022     wave->add(rowWaves[row].get());
00023     
00024     waves[pos] = wave;
00025 }
00026 
00027 void MbedDtmfGenerator::makeWaves()
00028 {
00029     static int colFreq[4] = { 1209, 1336, 1477, 1633 };
00030     static int rowFreq[4] = { 697, 770, 852, 941 };
00031     
00032     for(int i = 0; i < 4; ++i) {
00033         std::cout << "Init ColWave " << i << " hz=" << colFreq[i] << "\r" << std::endl;     
00034         colWaves[i].reset(new SineWave(colFreq[i]));
00035         
00036         std::cout << "Init RowWave " << i << " hz=" << rowFreq[i] << "\r" << std::endl;     
00037         rowWaves[i].reset(new SineWave(rowFreq[i]));
00038     }
00039 
00040     makeKeyWave(0, 3, 1);    
00041     for(int row = 0; row < 3; ++row) {
00042         for(int col = 0; col < 3; ++col) {
00043             makeKeyWave(row * 3 + col + 1, row, col);
00044         }
00045     }
00046     for(int ltr=0; ltr < 4; ++ltr) {
00047         makeKeyWave(ltr+10, ltr, 3);
00048     }
00049     makeKeyWave(14, 3, 0);
00050     makeKeyWave(15, 3, 2);
00051 }
00052 
00053 Wave * MbedDtmfGenerator::getWaveFor(char ch)
00054 {
00055     int index = -1;
00056     if (ch >= '0' && ch <= '9') {
00057         index = ch - '0';
00058     }
00059     else if (ch >= 'A' && ch <= 'D') {
00060         index = ch - 'A' + 10;
00061     }
00062     else if (ch == '*') {
00063         index = 14;
00064     }
00065     else if (ch == '#') {
00066         index = 15;
00067     }
00068     std::cout << "Wave for '" << ch << "' => " << index << "\r" << std::endl;
00069     return this->waves[index].get();
00070 }
00071 
00072 void MbedDtmfGenerator::play(char ch) 
00073 {
00074     Wave *wave = getWaveFor(ch);
00075     std::cout << "Play Wave '" << ch << "'" << "\r" << std::endl; 
00076     if (wave) {    
00077         generator.play(getWaveFor(ch));
00078     }
00079     else {
00080         std::cout << "No wave !\r" << std::endl;
00081     }
00082 }
00083 
00084 void MbedDtmfGenerator::stop() 
00085 {
00086     std::cout << "Stop Wave" << "\r" << std::endl;     
00087     generator.stop();
00088 }