使用WindowsAPI获取录音音频的方法(2)

//Run.c文件
#include <Windows.h>
#include <stdio.h>
#include "mmsystem.h"
#pragma comment(lib, "winmm.lib")
void PlayMusi();
void WaveInitFormat(LPWAVEFORMATEX m_WaveFormat, WORD nCh,DWORD nSampleRate,WORD BitsPerSample);
DWORD CALLBACK MicCallback(HWAVEIN hwavein, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
void RecordWave();

void main()
{
 //PlayMusi();
 RecordWave();
 while(1);
}
void RecordWave()
{
 int count = waveInGetNumDevs();//1
 printf("\n音频输入数量：%d\n",count);

 WAVEINCAPS waveIncaps;
 MMRESULT mmResult = waveInGetDevCaps(0,&waveIncaps,sizeof(WAVEINCAPS));//2
 printf("\n音频输入设备：%s\n",waveIncaps.szPname);

 if(MMSYSERR_NOERROR==mmResult)
 {
 HWAVEIN phwi;
 WAVEFORMATEX pwfx;
 WaveInitFormat(&pwfx,1,8000,8);
 printf("\n请求打开音频输入设备");
 printf("\n采样参数：单声道 8kHz 8bit\n");
 mmResult=waveInOpen(&phwi,WAVE_MAPPER,&pwfx,(DWORD)(MicCallback),NULL,CALLBACK_FUNCTION);//3

 if(MMSYSERR_NOERROR==mmResult)
 {
  WAVEHDR pwh1;
  char buffer1[10240];
  pwh1.lpData=buffer1;
  pwh1.dwBufferLength=10240;
  pwh1.dwUser=1;
  pwh1.dwFlags=0;
  mmResult=waveInPrepareHeader(phwi,&pwh1,sizeof(WAVEHDR));//4
  printf("\n准备缓冲区1");

  WAVEHDR pwh2;
  char buffer2[10240];
  pwh2.lpData=buffer2;
  pwh2.dwBufferLength=10240;
  pwh2.dwUser=2;
  pwh2.dwFlags=0;
  mmResult=waveInPrepareHeader(phwi,&pwh2,sizeof(WAVEHDR));//4
  printf("\n准备缓冲区2\n");

  if(MMSYSERR_NOERROR==mmResult)
  {
  mmResult=waveInAddBuffer(phwi,&pwh1,sizeof(WAVEHDR));//5
  printf("\n将缓冲区1加入音频输入设备");
  mmResult=waveInAddBuffer(phwi,&pwh2,sizeof(WAVEHDR));//5
  printf("\n将缓冲区2加入音频输入设备\n");

  if(MMSYSERR_NOERROR==mmResult)
  {
   mmResult=waveInStart(phwi);//6
   printf("\n请求开始录音\n");
  }
  }
 }

 }
}
DWORD CALLBACK MicCallback(HWAVEIN hwavein, UINT uMsg, DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)
{
 switch(uMsg) 
 {
 case WIM_OPEN:
  printf("\n设备已经打开...\n");
  break;
 
 case WIM_DATA:
  printf("\n缓冲区%d存满...\n",((LPWAVEHDR)dwParam1)->dwUser);
  waveInAddBuffer (hwavein, (LPWAVEHDR)dwParam1, sizeof (WAVEHDR)) ;
  break;
 
 case WIM_CLOSE:
  printf("\n设备已经关闭...\n");
  break;
 default:
  break;
 }
 return 0;
}
void WaveInitFormat(LPWAVEFORMATEX m_WaveFormat, WORD nCh,DWORD nSampleRate,WORD BitsPerSample)
{
 m_WaveFormat->wFormatTag = WAVE_FORMAT_PCM;
 m_WaveFormat->nChannels = nCh;
 m_WaveFormat->nSamplesPerSec = nSampleRate;
 m_WaveFormat->nAvgBytesPerSec = nSampleRate * nCh * BitsPerSample/8;
 m_WaveFormat->nBlockAlign = m_WaveFormat->nChannels * BitsPerSample/8;
 m_WaveFormat->wBitsPerSample = BitsPerSample;
 m_WaveFormat->cbSize = 0;
}
void PlayMusi()
{
 int error = mciSendString("open C:\\Users\\Angel\\Desktop\\有多少爱可以重来.mp3 alias myDivece", NULL, 0, NULL);
 if (error == 0)
 {
 mciSendString("play myDivece", NULL, 0, NULL); //播放
 }
}