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2008-05-17, 08:37 PM | #1 |
註冊會員
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疑問 - TNMUDP連線問題?
請問各位大大
我用TNMUDP來連線,傳送聲音 可是我傳送到接收端電腦時,傳送的電腦也為出現聲音,這是為什麼呢? 還有我用4個暫存器,每個暫存器大小是8000,再把8000分四次傳送(此時聲音會一直重複出現)不知是何原因造成的?? 以下是程式 //--------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "Unit1.h" #include <windows.h> #include <mmsystem.h> #include <mmreg.h> #include <string.h> #define bufsize 8000 HWND hWnd; HWAVEIN hwi; HWAVEOUT hwo; WAVEFORMATEX wfx; WAVEHDR wavehdr_in,wavehdr_out; char buf[4][bufsize]; void Sound_set_struct(); void Sound_initial_Record(); void Sound_initial_Play(); void CALLBACK waveInProc(HWAVEIN hwi, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2); void SRecord(); int q,w=0; int cnt; int choosebuf=0; int cnt1; int choosebuf1=0; //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1Click(TObject *Sender) { Form1->SoundRx->RemoteHost = Form1->Edit1->Text; Form1->SoundTx->RemoteHost = Form1->Edit1->Text; GetIP(Edit1->Text.c_str()); q=0; } //--------------------------------------------------------------------------- void GetIP(char *temp) { Form1->SoundRx->RemoteHost=temp; Form1->SoundTx->RemoteHost=temp; } //-------------------------------------------------------------------------- void __fastcall TForm1::Button2Click(TObject *Sender) { Sound_set_struct(); Sound_initial_Record(); Sound_initial_Play(); //SRecord(); Sound_initial_Record(); } //--------------------------------------------------------------------------- void Sound_set_struct() { wfx.wFormatTag = WAVE_FORMAT_PCM; wfx.nChannels = 1; wfx.nSamplesPerSec = 8000; wfx.wBitsPerSample = 8; wfx.nBlockAlign = 1; wfx.nAvgBytesPerSec = wfx.nSamplesPerSec*wfx.nBlockAlign; wfx.cbSize = 0; wavehdr_in.lpData =buf[0] ; wavehdr_in.dwBufferLength =bufsize; wavehdr_in.dwFlags =0; wavehdr_out.lpData =buf[0] ; wavehdr_out.dwBufferLength =bufsize; wavehdr_out.dwFlags =0; } void Sound_initial_Record() { waveInOpen(&hwi,WAVE_MAPPER,&wfx,(DWORD)waveInProc,NULL,CALLBACK_FUNCTION); waveInPrepareHeader(hwi,&wavehdr_in,sizeof(WAVEHDR)); waveInAddBuffer(hwi,&wavehdr_in,sizeof(WAVEHDR)); waveInStart(hwi); } void Sound_initial_Play() { waveOutOpen(&hwo,WAVE_MAPPER,&wfx,NULL,NULL,CALLBACK_NULL); waveOutPrepareHeader(hwo,&wavehdr_out,sizeof(WAVEHDR)); } void CALLBACK waveInProc(HWAVEIN hwi, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2) { switch(uMsg) { case WIM_OPEN: break; case WIM_DATA: for(int i=0; i<4; i++) { cnt = 2000*i; Form1->SoundTx->SendBuffer((buf[choosebuf]+cnt),2000,2000); } if (choosebuf != 3) choosebuf++; else { choosebuf = 0; } waveInUnprepareHeader(hwi,&wavehdr_in,sizeof(WAVEHDR)); //釋放錄音buffer wavehdr_in.lpData =buf[choosebuf] ; wavehdr_in.dwFlags =0; wavehdr_in.dwBufferLength =bufsize; waveInPrepareHeader(hwi,&wavehdr_in,sizeof(WAVEHDR)); waveInAddBuffer(hwi,&wavehdr_in,sizeof(WAVEHDR)); waveInStart(hwi); w++; Form1->Edit3->Text=w; break; } } //---------------------------------------------------------------------------- void __fastcall TForm1::SoundRxDataReceived(TComponent *Sender, int NumberBytes, AnsiString FromIP, int Port) { for(int f=0; f<4; f++) { cnt1= f*2000; SoundRx->ReadBuffer((buf[choosebuf1]+cnt1),2000,2000); } waveOutUnprepareHeader(hwo,&wavehdr_out,sizeof(WAVEHDR)); wavehdr_out.lpData = buf[choosebuf1] ; wavehdr_out.dwBufferLength =bufsize; waveOutPrepareHeader(hwo,&wavehdr_out,sizeof(WAVEHDR)); waveOutWrite(hwo,&wavehdr_out,sizeof(WAVEHDR)); q++; Form1->Edit2->Text=q; if (choosebuf1!= 3) choosebuf1++; else choosebuf1=0; } //------------------------------------------------------------------------- |
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