哪位大神有时间，帮我看下这个windows下的录音程序。
检查了半天也没找出bug在哪，始终是录音没录下来，求高手解答。
- C/C++ code
//WaveIn.h#pragma once#include <Windows.h>#include <MMSystem.h>#include <cstdio>#define SAMPLE_DEFAULT 16000#define CHANNEL_DEFAULT 1#define BIT_DEFAULT 16#define NUM_BUF 10#define AUDIO_BUFFER 960#pragma comment(lib, "Winmm.lib")class WaveIn{public: WaveIn(void);public: virtual ~WaveIn(void); static DWORD WINAPI WaveInProc(LPVOID lpParam); void SetRecPara(WORD channel, DWORD sample, WORD bit); void GetData(char *pBuffer, int len); BOOL OpenFile(char *fileName); BOOL StartRecord(); BOOL StopRecord();protected: BOOL OpenDev(); BOOL CloseDev(); BOOL StartThread(); BOOL StopThread(); BOOL PrepareBuffer(); BOOL FreeBuffer(); BOOL OpenRecord(); BOOL CloseRecord();protected: WORD m_Channel;/*声道*/ DWORD m_Sample;/*采样频率*/ WORD m_Bit;/*量化位数*/ BOOL m_IsDevOpen; BOOL m_IsThreadStart; BOOL m_IsRecordStart; BOOL m_IsBufferAlloc; BOOL m_IsRecordOpen;protected: HWAVEIN m_hwn; WAVEHDR *m_pHdr; DWORD m_AudioInId; //HWND m_hAudioIn; HANDLE m_hAudioIn;private: FILE *m_WaveFile;};- C/C++ code
//WaveIn.cpp//#include "StdAfx.h"#include "WaveIn.h"WaveIn::WaveIn():m_Channel(CHANNEL_DEFAULT),m_Sample(SAMPLE_DEFAULT),m_Bit(BIT_DEFAULT){ m_IsDevOpen = FALSE; m_IsThreadStart = FALSE; m_IsRecordStart = FALSE; m_IsBufferAlloc = FALSE; m_IsRecordOpen = FALSE;}WaveIn::~WaveIn(void){}void WaveIn::SetRecPara(WORD channel, DWORD sample, WORD bit){ m_Channel = channel; m_Sample = sample; m_Bit = bit;}BOOL WaveIn::OpenDev(){ if(m_IsDevOpen) { return FALSE; } /*设置录音输出格式*/ WAVEFORMATEX wfx; wfx.wFormatTag = WAVE_FORMAT_PCM; wfx.nChannels = m_Channel; wfx.nSamplesPerSec = m_Sample; wfx.nAvgBytesPerSec = m_Sample * m_Channel * m_Bit / 8; wfx.nBlockAlign = m_Channel * m_Bit / 8; wfx.wBitsPerSample = m_Bit; wfx.cbSize = 0; int ret = waveInOpen(0, WAVE_MAPPER, &wfx, 0, 0, WAVE_FORMAT_QUERY); if( ret) { printf("waveInOpen error %d\n", ret); return FALSE; } if( waveInOpen(&m_hwn, WAVE_MAPPER, &wfx, m_AudioInId, 0, CALLBACK_THREAD)) { return FALSE; } m_IsDevOpen = TRUE; return TRUE;}BOOL WaveIn::CloseDev(){ if(!m_IsDevOpen) { return FALSE; } if(!m_hwn) { return FALSE; } if(waveInClose(m_hwn)) { m_hwn = 0; m_IsDevOpen = FALSE; return FALSE; } m_hwn = 0; m_IsDevOpen = FALSE; return TRUE;}BOOL WaveIn::PrepareBuffer(){ if(m_IsBufferAlloc) { return FALSE; } if( waveInReset(m_hwn)) { return FALSE; } m_pHdr = new WAVEHDR[ NUM_BUF ]; for(UINT i=0; i<NUM_BUF; i++) { ZeroMemory(&m_pHdr[i], sizeof(WAVEHDR)); m_pHdr[i].lpData = new char[AUDIO_BUFFER]; m_pHdr[i].dwBufferLength = AUDIO_BUFFER; //准备缓存 if(waveInPrepareHeader(m_hwn, &m_pHdr[i], sizeof(WAVEHDR))) { return FALSE; } //添加缓存 if(waveInAddBuffer(m_hwn, &m_pHdr[i], sizeof(WAVEHDR))) { return FALSE; } } m_IsBufferAlloc = TRUE; return TRUE;}BOOL WaveIn::FreeBuffer(){ if (!m_IsBufferAlloc) { return FALSE; } if(!m_hwn) { return FALSE; } for(int i=0; i<NUM_BUF; i++) { if(waveInUnprepareHeader(m_hwn, &m_pHdr[i], sizeof(WAVEHDR))) { Sleep(100); continue; } if(m_pHdr[i].lpData) { delete []m_pHdr[i].lpData; } } delete []m_pHdr; m_pHdr = NULL; m_IsBufferAlloc = FALSE; return TRUE;}BOOL WaveIn::OpenRecord(){ if (m_IsRecordOpen) { return FALSE; } if(waveInStart(m_hwn)) { return FALSE; } m_IsRecordOpen = TRUE; return TRUE;}BOOL WaveIn::CloseRecord(){ if (!m_IsRecordOpen) { return FALSE; } if (!m_hwn) { return FALSE; } if(waveInReset(m_hwn)) { return FALSE; } m_IsRecordOpen = FALSE; return TRUE;}BOOL WaveIn::StartThread(){ if (m_IsThreadStart) { return FALSE; } if (!(m_hAudioIn = CreateThread(0, 0, WaveInProc, this, 0, &m_AudioInId))) { return FALSE; } m_IsThreadStart = TRUE; return TRUE;}BOOL WaveIn::StopThread(){ if(!m_IsThreadStart) { return FALSE; } if (m_AudioInId) { //循环变量 int t=50; //线程结束状态信息 DWORD ExitCode; //线程结束标记 BOOL bEnd=FALSE; //发送WM_QUIT消息 PostThreadMessage(m_AudioInId,WM_QUIT,0,0); //主循环 while(t) { //获取线程结束状态信息 GetExitCodeThread(m_hAudioIn,&ExitCode); //尚未结束 if(ExitCode!= STILL_ACTIVE) { //设置线程结束 bEnd=TRUE; break; } //休眠10毫秒 else { Sleep(10); } //修改循环变量 t--; } if(!bEnd) { TerminateThread(m_hAudioIn, 0); } m_AudioInId = 0; } m_IsThreadStart = FALSE; return TRUE;}BOOL WaveIn::StartRecord(){ if(m_IsRecordStart) { return FALSE; } if(!StartThread()) { return FALSE; } if( !OpenDev() ) { return FALSE; } if ( !PrepareBuffer() ) { return FALSE; } if ( !OpenRecord() ) { return FALSE; } m_IsRecordStart = TRUE; return TRUE;}BOOL WaveIn::StopRecord(){ CloseRecord(); Sleep(1500); FreeBuffer(); if (CloseDev()) { StopThread(); } m_IsRecordStart = FALSE; return TRUE;}DWORD WINAPI WaveIn::WaveInProc(LPVOID lpParam){ WaveIn *pWaveIn; pWaveIn = (WaveIn *)lpParam; char buffer[1024]; MSG msg; while(GetMessage(&msg, 0, 0, 0)) { switch(msg.message) { case MM_WIM_OPEN: break; case MM_WIM_CLOSE: break; case MM_WIM_DATA: WAVEHDR *pwh = (WAVEHDR *)msg.lParam; waveInUnprepareHeader((HWAVEIN)msg.wParam, pwh, sizeof(WAVEHDR)); if(pwh->dwBytesRecorded != AUDIO_BUFFER) { break; } /*复制录音数据*/ memcpy(buffer, pwh->lpData, pwh->dwBytesRecorded); pWaveIn->GetData( buffer, pwh->dwBytesRecorded); break; } } return msg.wParam;}void WaveIn::GetData(char *pBuffer, int len){ if(m_WaveFile) { fwrite(pBuffer, 1, len, m_WaveFile); }}BOOL WaveIn::OpenFile(char *fileName){ if((m_WaveFile = fopen(fileName, "wb")) == NULL) { return FALSE; } return TRUE;}
- C/C++ code
//main.cpp#include "WaveIn.h"int main(){ WaveIn myWaveIn; if(NULL == myWaveIn.OpenFile("record.pcm")) { printf("open File Error\n"); return EXIT_FAILURE; } if(myWaveIn.StartRecord()) printf("recording ..."); Sleep(5*1000); myWaveIn.StopRecord(); return 0;}[解决办法]
你可以用TMediaPlay的录音功能直接录音。
[解决办法]
太长了，这个是多媒体编程的例子程序吧。
如果是自己要用，可以用其他控件完成，比这个方便还快。
要研究的话，一步一步慢慢来吧。我没有时间仔细看这个代码了。