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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Main.h"
#include <Dialogs.hpp>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma link "CGAUGES"
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
}
//---------------------------------------------------------------------------
#define _20_msec 0.02
void TForm1::Fermer_la_capture_audio ( void )
{
waveInUnprepareHeader(h_WaveIn, Form1->pWaveHdr_1, sizeof(WAVEHDR));
waveInUnprepareHeader(h_WaveIn, Form1->pWaveHdr_2, sizeof(WAVEHDR));
}
void TForm1::Initialize_Get_audio(void)
{
short i;
HWND hwnd;
hwnd = Form1->Handle;
Form1-> waveform.wFormatTag = WAVE_FORMAT_PCM; // PCM
Form1-> waveform.nChannels = Mono; // MONO
Form1-> waveform.nSamplesPerSec = F_16k; // 16000 Hz
Form1-> waveform.nAvgBytesPerSec = F_16k * ( _16Bits / 8 ) * Mono;// 32000 bits per sec 16K, 16bits, Mono
Form1-> waveform.nBlockAlign = 1;
Form1-> waveform.wBitsPerSample = _16Bits; // 16 BITS
Form1-> waveform.cbSize = 0;
if ( waveInOpen(&h_WaveIn, WAVE_MAPPER, &Form1->waveform, (DWORD)hwnd, 0, CALLBACK_WINDOW))
{
MessageBox(0, "Cannot Open wave mapper in", "this demo software", MB_ICONEXCLAMATION | MB_OK);
exit(1);
}
// Allocate headers
Form1-> pWaveHdr_1 = (PWAVEHDR) malloc(sizeof(WAVEHDR));
Form1-> pWaveHdr_2 = (PWAVEHDR) malloc(sizeof(WAVEHDR));
// Allocate buffers
Form1-> pBuffer_1 = (PBYTE) malloc(sizeof(BYTE)*BUFFER_SIZE);
Form1-> pBuffer_2 = (PBYTE) malloc(sizeof(BYTE)*BUFFER_SIZE);
// Setup first header
Form1-> pWaveHdr_1->lpData = (CHAR*)Form1-> pBuffer_1;
Form1-> pWaveHdr_1->dwBufferLength = BUFFER_SIZE;
Form1-> pWaveHdr_1->dwBytesRecorded = 0;
Form1-> pWaveHdr_1->dwUser = 0;
Form1-> pWaveHdr_1->dwFlags = 0;
Form1-> pWaveHdr_1->dwLoops = 1;
Form1-> pWaveHdr_1->lpNext = NULL;
Form1-> pWaveHdr_1->reserved = 0;
Form1-> pWaveHdr_2->lpData = (CHAR*)Form1-> pBuffer_2;
Form1-> pWaveHdr_2->dwBufferLength = BUFFER_SIZE;
Form1-> pWaveHdr_2->dwBytesRecorded = 0;
Form1-> pWaveHdr_2->dwUser = 0;
Form1-> pWaveHdr_2->dwFlags = 0;
Form1-> pWaveHdr_2->dwLoops = 1;
Form1-> pWaveHdr_2->lpNext = NULL;
Form1-> pWaveHdr_2->reserved = 0;
// Add buffer
waveInPrepareHeader(h_WaveIn, Form1-> pWaveHdr_1, sizeof(WAVEHDR));
waveInPrepareHeader(h_WaveIn, Form1-> pWaveHdr_2, sizeof(WAVEHDR));
waveInStart(Form1->h_WaveIn);
}
#define scale 0.0030517578125 /* 100 div 32768*/
long ilp;
void TForm1::Capure_Audio(TMessage &Msg)
{
unsigned long i = 0;
while (i< ((PWAVEHDR) Msg.LParam)->dwBytesRecorded)
{
short m1,m2,m;
short* signal = (short*)&((PWAVEHDR)Msg.LParam)->lpData[i];
i += L_Frame_16k * sizeof(short);
m1 = 0;
m2 = 0;
for (short j =0; j < L_Frame_16k; j++) // 320 data 16k => 20 ms
{
m = signal[j];
if ( m > 0 )
m1 = max(m1, m);
else
m2 = min(m2, m);
}
CGauge1->Progress = max( m1,-m2)*scale;
Series1->Delete(0);
if ( m1+m2 >=0)
Series1->AddXY((++ilp)*_20_msec,m1*scale);
else
Series1->AddXY((++ilp)*_20_msec,m2*scale);
}
i = waveInAddBuffer(h_WaveIn, (PWAVEHDR) Msg.LParam, sizeof(WAVEHDR));
if ( i != 0 )
ShowMessage("Error_Audio_Capture " + IntToStr(i) );
}
void __fastcall TForm1::WndProc(TMessage &Msg)
{
switch ( Msg.Msg )
{
case MM_WIM_OPEN: // on init, add both buffers to WaveIn
{
waveInAddBuffer(h_WaveIn, Form1->pWaveHdr_1, sizeof(WAVEHDR));
waveInAddBuffer(h_WaveIn, Form1->pWaveHdr_2, sizeof(WAVEHDR));
break;
}
case MM_WIM_DATA: // We are receiving sound data...
{
Capure_Audio(Msg);
break;
}
}
TForm::WndProc(Msg);
}
void __fastcall TForm1::FormClose(TObject *Sender, TCloseAction &Action)
{
Fermer_la_capture_audio ( );
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormActivate(TObject *Sender)
{
Initialize_Get_audio();
CGauge1->Align = alLeft;
CGauge1->MinValue = 0;
CGauge1->MaxValue = 100;
Caption = "DEMONSTRATION SOFTWARE INCLUDING AUDIO MESSAGE INTERCEPTION";
Chart1->LeftAxis->Automatic = false;
Chart1->LeftAxis->Maximum = 100;
Chart1->LeftAxis->Minimum = -100;
Chart1->BottomAxis->Automatic = true;
Series1->Clear();
for ( ilp = -1000; ilp <=0 ; ilp++ )
Series1->AddXY(ilp*_20_msec,0);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::FormCreate(TObject *Sender)
{
TBorderIcons tempBI = BorderIcons;
tempBI >> biMaximize;
tempBI >> biMinimize;
tempBI >> biHelp;
tempBI >> biSystemMenu;
BorderIcons = tempBI;
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button1Click(TObject *Sender)
{
Application->Terminate();
}
//--------------------------------------------------------------------------- |
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