使用WindowsAPI获取录音音频的方法

#include <Windows.h>#include "mmsystem.h"#pragma comment(lib, "winmm.lib")

UINT waveInGetNumDevs(VOID);

MMRESULT waveInGetDevCaps(  UINT_PTR   uDeviceID,  LPWAVEINCAPS pwic,     UINT     cbwic    );//uDeviceID 音频输入设备标识,也可以为一个打开的音频输入设备的句柄.//  个人认为如果上一步获得了多个设备，可以用索引标识每一个设备.//  //pwic 对WAVEINCAPS结构体的一个指针,包含设备的音频特性.////cbwic WAVEINCAPS结构体的大小,使用sizeof即可.////MMRESULT 函数执行的结果//  MMSYSERR_NOERROR 表示执行成功//  MMSYSERR_BADDEVICEID 索引越界 //  MMSYSERR_NODRIVER 没有就绪的设备 //  MMSYSERR_NOMEM 不能分配或者锁定内存

typedef struct {   WORD   wMid;        //音频设备制造商定义的驱动程序标识  WORD   wPid;        //音频输入设备的产品标识  MMVERSION vDriverVersion;    //驱动程序版本号  TCHAR   szPname[MAXPNAMELEN];//制造商名称  DWORD   dwFormats;      //支持的格式,参见MSDN  WORD   wChannels;      //支持的声道数  WORD   wReserved1;      //保留参数} WAVEINCAPS;

MMRESULT waveInOpen( LPHWAVEIN    phwi,        //接收打开的音频输入设备标识的HWAVEIN结构的指针 UINT_PTR    uDeviceID,      //指定一个需要打开的设备标识.可以使用WAVE_MAPPER选择一个按指定录音格式录音的设备 LPWAVEFORMATEX pwfx,        //一个所需的格式进行录音的WAVEFORMATEX结构的指针  DWORD_PTR   dwCallback,    //指向一个回调函数、事件句柄、窗口句柄、线程标识,对录音事件进行处理. DWORD_PTR   dwCallbackInstance, //传给回调机制的参数 DWORD     fdwOpen      //打开设备的方法标识,指定回调的类型.参见CSDN);

typedef struct {   WORD wFormatTag;    //波形声音的格式,单声道双声道使用WAVE_FORMAT_PCM.当包含在WAVEFORMATEXTENSIBLE结构中时,使用WAVE_FORMAT_EXTENSIBLE.  WORD nChannels;    //声道数量  DWORD nSamplesPerSec;  //采样率.wFormatTag为WAVE_FORMAT_PCM时,有8.0kHz,11.025kHz,22.05kHz,和44.1kHz.  DWORD nAvgBytesPerSec;  //每秒的采样字节数.通过nSamplesPerSec * nChannels * wBitsPerSample / 8计算  WORD nBlockAlign;    //每次采样的字节数.通过nChannels * wBitsPerSample / 8计算  WORD wBitsPerSample;  //采样位数.wFormatTag为WAVE_FORMAT_PCM时,为8或者16  WORD cbSize;      //wFormatTag为WAVE_FORMAT_PCM时,忽略此参数} WAVEFORMATEX;

void CALLBACK waveInProc( HWAVEIN hwi,     //回调此函数的设备句柄 UINT uMsg,      //波形声音输入信息,标识关闭(WIM_CLOSE)、缓冲区满(WIM_DATA)、打开(WIM_OPEN). DWORD_PTR dwInstance, //用户在waveInOpen指定的数据 DWORD_PTR dwParam1,  //(LPWAVEHDR)dwParam1,用户指定的缓冲区 DWORD_PTR dwParam2   );

MMRESULT waveInPrepareHeader( HWAVEIN hwi,  //音频输入设备句柄 LPWAVEHDR pwh,//指向WAVEHDR结构的指针,标识准备的缓冲区 UINT cbwh    //WAVEHDR结构的大小,使用sizeof即可);

typedef struct wavehdr_tag {   LPSTR   lpData;     //指向波形格式的缓冲区  DWORD   dwBufferLength; //缓冲区的大小  DWORD   dwBytesRecorded; //当前存储了多少数据  DWORD_PTR dwUser;     //用户数据  DWORD   dwFlags;      //为缓冲区提供的信息,在waveInPrepareHeader函数中使用WHDR_PREPARED  DWORD   dwLoops;     //输出时使用,标识播放次数  struct wavehdr_tag * lpNext;//reserved  DWORD_PTR reserved;     //reserved} WAVEHDR, *LPWAVEHDR; 

MMRESULT waveInAddBuffer( HWAVEIN hwi,  LPWAVEHDR pwh,  UINT cbwh ); 

MMRESULT waveInStart( HWAVEIN hwi //设备句柄);

MRESULT waveInClose( HWAVEIN hwi //设备句柄);

//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 }}