dtmf.cpp
// DTMF出力
#include <windows.h>
#include <tchar.h>
#include <mmsystem.h>
#include <math.h>
#include "resource.h"
#pragma comment(lib,"winmm.lib")
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
// ダイアログボックスプロシージャー
LRESULT CALLBACK DlgProc1(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam);
// キャラクターコードに対応するDTMF信号の周波数を取得
void Char2Dtmf(int c, int* f1, int* f2);
class OUT_WAVE{
int bufCount; // 再生するバイト数
int sz; // バッファ長
HWAVEOUT hWaveOut;
WAVEFORMATEX wfe;
WAVEHDR* whdr;
short** lpWave; // バッファ
public:
bool reset;
void open2(int rate, int sec){ // wave出力デバイスを開く
bufCount = 1; // 使用するバッファ数
reset = true;
wfe.wFormatTag = WAVE_FORMAT_PCM;
wfe.nChannels = 1; // モノラル
wfe.wBitsPerSample = 16; // 分解能16bit
wfe.nBlockAlign = wfe.nChannels*wfe.wBitsPerSample / 8;
wfe.nSamplesPerSec = rate; // サンプルレート
wfe.nAvgBytesPerSec = wfe.nSamplesPerSec * wfe.nBlockAlign;
waveOutOpen(&hWaveOut, WAVE_MAPPER, &wfe, (DWORD_PTR)0, (DWORD_PTR)this, CALLBACK_FUNCTION);
sz = wfe.nAvgBytesPerSec*sec/1000;
whdr =new WAVEHDR[bufCount];
lpWave = (short**)new DWORD_PTR[bufCount];
for (int n = 0; n < bufCount; n++){
lpWave[n] = new short[wfe.nAvgBytesPerSec*sec];
whdr[n].lpData = (LPSTR)lpWave[n];
}
}
void dtmfMake(int freq1,int freq2){ // DTMFデータ作成
double qstep1 = 2 * M_PI *freq1 / wfe.nSamplesPerSec;
double qstep2 = 2 * M_PI *freq2 / wfe.nSamplesPerSec;
double q1 = 0;
double q2 = 0;
int n;
for (n = 0; n < sz; n++){
int d;
d = int(16383 * sin(q1)) + int(16383 * sin(q2));
for (int i = 0; i < bufCount; i++)
lpWave[i][n] = d;
q1 += qstep1;
q2 += qstep2;
}
for (int i = 0; i < bufCount; i++){
whdr[i].dwBufferLength = n * 2; // バッファバイト数
whdr[i].dwFlags = WHDR_BEGINLOOP | WHDR_ENDLOOP;
whdr[i].dwLoops = 0;
whdr[i].dwUser = 0;
}
}
void ownPlay(void){ // ワンショット再生
reset = true;
for (int i = 0; i < bufCount; i++){
whdr[i].dwLoops = 0;
whdr[i].dwFlags = 0;
waveOutPrepareHeader(hWaveOut, &whdr[i], sizeof(WAVEHDR));
waveOutWrite(hWaveOut, &whdr[i], sizeof(WAVEHDR));
}
}
void stop(void){ // 停止
reset = true;
waveOutReset(hWaveOut);
}
void close(void){ // wave出力デバイスを閉じる
stop();
for (int n = 0; n < bufCount; n++){
waveOutUnprepareHeader(hWaveOut, &whdr[n], sizeof(WAVEHDR));
delete[]lpWave[n];
}
delete[]whdr;
delete[]lpWave;
}
};
OUT_WAVE wav;
int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPreInst, TCHAR* lpszCmdLine, int nCmdShow){
wav.open2( 48000 , 200 );
DialogBox(hInstance, TEXT("DLG1"), 0, (DLGPROC)DlgProc1);
wav.close();
return 0;
}
// ダイアログボックスプロシージャー
LRESULT CALLBACK DlgProc1(HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam){
int freq1;
int freq2;
switch (msg) {
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDCANCEL:
EndDialog(hDlg, FALSE);
return FALSE;
default:
if (isDtmfChar(LOWORD(wParam) - WM_USER) ){
wav.stop();
Char2Dtmf(LOWORD(wParam) - WM_USER,&freq1,&freq2);
wav.dtmfMake(freq1,freq2);
wav.ownPlay();
}
return FALSE;
}
default:
return FALSE;
}
return TRUE;
}
// キャラクターコードに対応するDTMF信号の周波数を取得
void Char2Dtmf(int c, int* f1, int* f2){
int low[] = { 697, 770, 852, 941 };
int hi[] = { 1209, 1336, 1477, 1633 };
char* str = "123A456B789C*0#D";
int n = 0;
while (str[n]){
if (str[n] == c){
int hin = n % 4;
int lown = n / 4;
*f1 = low[lown];
*f2 = hi[hin];
return;
}
++n;
}
*f1 = -1;
*f2 = -1;
}
resource.h
#define IDC_1_BUTTON (WM_USER+0x31)
#define IDC_2_BUTTON (WM_USER+0x32)
#define IDC_3_BUTTON (WM_USER+0x33)
#define IDC_A_BUTTON (WM_USER+0x41)
#define IDC_4_BUTTON (WM_USER+0x34)
#define IDC_5_BUTTON (WM_USER+0x35)
#define IDC_6_BUTTON (WM_USER+0x36)
#define IDC_B_BUTTON (WM_USER+0x42)
#define IDC_7_BUTTON (WM_USER+0x37)
#define IDC_8_BUTTON (WM_USER+0x38)
#define IDC_9_BUTTON (WM_USER+0x39)
#define IDC_C_BUTTON (WM_USER+0x43)
#define IDC_ASTERRISK_BUTTON (WM_USER+0x2A)
#define IDC_0_BUTTON (WM_USER+0x30)
#define IDC_SHARP_BUTTON (WM_USER+0x23)
#define IDC_D_BUTTON (WM_USER+0x44)
#define isDtmfChar(c) ( (_T('#')<=c && c<=_T('D')) ? 1 : 0 )
resource.rc
</#include <windows.h>
#include "resource.h"
dlg1 DIALOG DISCARDABLE 0, 0, 142, 118
EXSTYLE WS_EX_DLGMODALFRAME
STYLE WS_POPUP | WS_CAPTION | WS_SYSMENU | DS_SETFONT
CAPTION "DTMF出力"
FONT 9, "ＭＳ 明朝"
{
PUSHBUTTON "1", IDC_1_BUTTON, 7, 7, 32, 26
PUSHBUTTON "2", IDC_2_BUTTON, 39, 7, 32, 26
PUSHBUTTON "3", IDC_3_BUTTON, 71, 7, 32, 26
PUSHBUTTON "A", IDC_A_BUTTON, 103, 7, 32, 26
PUSHBUTTON "4", IDC_4_BUTTON, 7, 33, 32, 26
PUSHBUTTON "5", IDC_5_BUTTON, 39, 33, 32, 26
PUSHBUTTON "6", IDC_6_BUTTON, 71, 33, 32, 26
PUSHBUTTON "B", IDC_B_BUTTON, 103, 33, 32, 26
PUSHBUTTON "7", IDC_7_BUTTON, 7, 59, 32, 26
PUSHBUTTON "8", IDC_8_BUTTON, 39, 59, 32, 26
PUSHBUTTON "9", IDC_9_BUTTON, 71, 59, 32, 26
PUSHBUTTON "C", IDC_C_BUTTON, 103, 59, 32, 26
PUSHBUTTON "*", IDC_ASTERRISK_BUTTON, 7, 85, 32, 26
PUSHBUTTON "0", IDC_0_BUTTON, 39, 85, 32, 26
PUSHBUTTON "#", IDC_SHARP_BUTTON, 71, 85, 32, 26
PUSHBUTTON "D", IDC_D_BUTTON, 103, 85, 32, 26
}pre>
