windows下录制音频

参考文档:

1:github上的一个开源代码:点击打开链接,因为存储音频需要自己写文件头部,所以这里借鉴了它的文件存储功能。

2:一个很有用的帖子代码:点击打开链接,虽然有点小瑕疵,但是下面有解答。

3:一个说明类的博客:点击打开链接


这里加一些说明:windows下多线程尽量用_beginthreadex而不是CreateThread,网上原因说的很详细。其次,在关闭录音时,一定不要对waveIn设备进行缓冲区操作,要不然容易生成死锁。示例代码如下:

创建终止拷贝线程的代码:(上文博客里面提示,不能在录音的回调函数里将数据写到文件,因此需要创建线程,单独拷贝)

bool stopRecording(const char *fileName, int nameSize){
	char *fileNameTrue = (char *)malloc(sizeof(char)* (nameSize+1));
	strcpy_s(fileNameTrue,nameSize+1, fileName);

	//终止录音
	unsigned threadID;
	hAudio_Detect_Thread = (HANDLE)_beginthreadex(NULL, 0, &Audio_Detect, fileNameTrue, 0, &threadID);

	WaitForSingleObject(hAudio_Detect_Thread, INFINITE);

	CloseHandle(hAudio_Detect_Thread);
	return true;
}


给waveIn设备更换缓冲模块的代码,注意缓冲模块最少应该是4个,过少容易造成杂音之类的问题
void processSamples()
{
	if(bRecordingStarted ){
		waveInUnprepareHeader(hWaveIn, WaveHeaders[iBuffIdx], sizeof(WAVEHDR));
		iBuffIdx ++;
		if (iBuffIdx == BUFFERCOUNT)
		{
			iBuffIdx = 0;
		}

		WaveHeaders[iBuffIdxT]->dwBufferLength = WaveBufSize;
		WaveHeaders[iBuffIdxT]->dwFlags = 0;
		WaveHeaders[iBuffIdxT]->dwLoops = 0;
		waveInPrepareHeader(hWaveIn, WaveHeaders[iBuffIdxT], sizeof(WAVEHDR));
		waveInAddBuffer(hWaveIn, WaveHeaders[iBuffIdxT], sizeof(WAVEHDR));

		if (iBuffIdxT == BUFFERCOUNT)
		{
			iBuffIdxT = 0;
		}
	}
}


写数据的函数,主要调用了github上的代码
void writeData(char *name){
	//停止录音
	printf("进入写的函数里面了, the name is %s\n", name);
	bRecordingStarted = false;
	waveInReset(hWaveIn);
	int stopcode = waveInStop(hWaveIn);
	printf("the stopcode is %d\n", stopcode);

	COutputFile *file = NULL;
	file = new CWaveOutputFile;
	if (!file->Create(name, m_waveformin))
	{
		printf("初始化就错误了\n");
	}
	printf("正在写数据\n");
	file->WriteData(m_AudioDataPool.lpdata, m_AudioDataPool.dwLength);
	printf("the length of m_AudioDataPool.length is %d", m_AudioDataPool.dwLength);
	file->Flush();
	
	//释放资源
	free(name);
	free(m_AudioDataPool.lpdata);
	m_AudioDataPool.lpdata = NULL;
	m_AudioDataPool.dwLength = 0;
}


windows下录制音频

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