根据前面几篇关于语音操作文章,实现播放wav音频文件:
a.>加载wav文件;b.>读取wav文件信息;c.>获得wav数据块;d.>打开音频设备;e.>装载读取的数据;f.>发送到音频设备上播放数据;g.>关闭设备释放内存.
/*************************************************************************/
/*************************Author : MMLoveMeMM*****************************/
/*************************Date : 2013/05/29*******************************/
/********************Description : play wav audio file by vc program******/
/*************************************************************************/
#include
#include
#include
#pragma comment( lib, "Winmm.lib" )
int main(int argc, char* argv[])
{
// LPWSTR szFileName;//声音文件名
MMCKINFO mmckinfoParent;
MMCKINFO mmckinfoSubChunk;
DWORD dwFmtSize;
HMMIO m_hmmio;//音频文件句柄
DWORD m_WaveLong;
HPSTR lpData;//音频数据
HANDLE m_hData=NULL;
HANDLE m_hFormat;
WAVEFORMATEX * lpFormat;
DWORD m_dwDataOffset;
DWORD m_dwDataSize;
WAVEHDR pWaveOutHdr;
WAVEOUTCAPS pwoc;
HWAVEOUT hWaveOut;
int SoundOffset=0;
int SoundLong=0;
int DevsNum;
//打开波形文件1KTest.wav
//if(!(m_hmmio=mmioOpen(argv[1],NULL,MMIO_READ|MMIO_ALLOCBUF)))
if(!(m_hmmio=mmioOpen("1KTest.wav",NULL,MMIO_READ|MMIO_ALLOCBUF)))
{
//File open Error
printf("Failed to open the file.");//错误处理函数
return false;
}
//检查打开文件是否是声音文件
mmckinfoParent.fccType =mmioFOURCC('W','A','V','E');
if(mmioDescend(m_hmmio,(LPMMCKINFO)&mmckinfoParent,NULL,MMIO_FINDRIFF))
{
printf("NOT WAVE FILE AND QUIT");
return 0;
}
//寻找'fmt'块
mmckinfoSubChunk.ckid =mmioFOURCC('f','m','t',' ');
if(mmioDescend(m_hmmio,&mmckinfoSubChunk,&mmckinfoParent,MMIO_FINDCHUNK))
{
printf("Can’t find ’fmt’ chunk");
return 0;
}
//获得'fmt'块的大小，申请内存
dwFmtSize=mmckinfoSubChunk.cksize ;
m_hFormat=LocalAlloc(LMEM_MOVEABLE,LOWORD(dwFmtSize));
if(!m_hFormat)
{
printf("failed alloc memory");
return 0;
}
lpFormat=(WAVEFORMATEX*)LocalLock(m_hFormat);
if(!lpFormat)
{
printf("failed to lock the memory");
return 0;
}
if((unsigned long)mmioRead(m_hmmio,(HPSTR)lpFormat,dwFmtSize)!=dwFmtSize)
{
printf("failed to read format chunk");
return 0;
}
//离开 fmt 块
mmioAscend(m_hmmio,&mmckinfoSubChunk,0);
//寻找'data'块
mmckinfoSubChunk.ckid=mmioFOURCC('d','a','t','a');
if(mmioDescend(m_hmmio,&mmckinfoSubChunk,&mmckinfoParent,MMIO_FINDCHUNK))
{
printf("Can’t find ’data’ chunk");
return 0;
}
//获得 ’data’块的大小
m_dwDataSize=mmckinfoSubChunk.cksize ;
m_dwDataOffset =mmckinfoSubChunk.dwDataOffset ;
if(m_dwDataSize==0L)
{
printf("no data in the ’data’ chunk");
return 0;
}
//为音频数据分配内存
lpData=new char[m_dwDataSize];
if(!lpData)
{
printf("\ncan not alloc mem");
return 0;
}
if(mmioSeek(m_hmmio,m_dwDataOffset,SEEK_SET)<0)
{
printf("Failed to read the data chunk");
return 0;
}
// m_WaveLong=mmioRead(m_hmmio,lpData,SoundLong);//如果用这个,即自定义读取wav数据块长度
m_WaveLong=mmioRead(m_hmmio,lpData,m_dwDataSize);
if(m_WaveLong<0)
{
printf("Failed to read the data chunk");
return 0;
}
//检查音频设备，返回音频输出设备的性能
if(waveOutGetDevCaps(WAVE_MAPPER,&pwoc,sizeof(WAVEOUTCAPS))!=0)
{
printf("Unable to allocate or lock memory");
return 0;
}
//检查音频输出设备是否能播放指定的音频文件
DevsNum = WAVE_MAPPER;
if(waveOutOpen(&hWaveOut,DevsNum,lpFormat,NULL,NULL,CALLBACK_NULL)!=0)
{
printf("Failed to OPEN the wave out devices");
// return 0;
}
//准备待播放的数据
pWaveOutHdr.lpData =(HPSTR)lpData;
pWaveOutHdr.dwBufferLength =m_WaveLong;
pWaveOutHdr.dwFlags =0;
if(waveOutPrepareHeader(hWaveOut,&pWaveOutHdr,sizeof(WAVEHDR))!=0)
{
printf("Failed to prepare the wave data buffer");
return 0;
}
//播放音频数据文件
if(waveOutWrite(hWaveOut,&pWaveOutHdr,sizeof(WAVEHDR))!=0)
{
printf("Failed to write the wave data buffer");
return 0;
}
//关闭音频输出设备,释放内存
printf("\npress any key");
getchar();
waveOutReset(hWaveOut);
waveOutClose(hWaveOut);
LocalUnlock(m_hFormat);
LocalFree(m_hFormat);
delete [] lpData;
return 0;
}