VC实现的avi,mid,mp3,asf,wma播放器核心代码

最新推荐文章于 2020-08-21 16:40:05 发布

原创最新推荐文章于 2020-08-21 16:40:05 发布 · 5.1k 阅读

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#avi #null #audio

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博客给出了媒体播放器相关代码，包含播放和获取信息、暂停等功能。播放函数可处理图片和音频文件，对音频文件使用mciSendCommand进行操作；获取信息函数用于获取音频状态；暂停函数可停止计时并关闭音频。

void MediaPlayerDlg::Play(CString psing)
{

  extname=getExt(psing);
  if(extname=="jpg"|extname=="bmp"|extname=="gif")
  {

   pApp->OpenDocumentFile(psing);

   playing=TRUE;
  }
  else
  {


  m_pParent->ShowWindow(SW_HIDE);
  mciopenparms.lpstrElementName=psing;
  mciopenparms.lpstrDeviceType=NULL;
  mciSendCommand(0,MCI_OPEN,MCI_DEVTYPE_WAVEFORM_AUDIO,(DWORD)(LPVOID)&mciopenparms);
  m_count=mciopenparms.wDeviceID;
  mciplayparms.dwCallback=(DWORD)GetSafeHwnd();
  cdlen=getinfo(MCI_STATUS_LENGTH);
  if(playing==TRUE)cdfrom=MCI_MAKE_HMS(0,0,0);
  cdto=MCI_MAKE_HMS(MCI_HMS_HOUR(cdlen),MCI_HMS_MINUTE(cdlen),MCI_HMS_SECOND(cdlen));
  mciplayparms.dwFrom=cdfrom;
  mciplayparms.dwTo=cdto;
  mciSendCommand(m_count,MCI_PLAY,MCI_TO|MCI_FROM,(DWORD)(LPVOID)& mciplayparms);
  SetTimer(0,1000,NULL);
  m_slider.SetRange(0,cdlen);
  playing=TRUE;

  //计算歌曲播放时间
  second=cdlen/1000;

  minite=second/60;
  second=second%60;
  singtime.Format("%02d:%02d",minite,second);
  }

}
DWORD MediaPlayerDlg::getinfo(DWORD item)
{

mcistatusparms.dwCallback=(DWORD)GetSafeHwnd();
mcistatusparms.dwItem=item;
mcistatusparms.dwReturn=0;
mciSendCommand(m_count,MCI_STATUS,MCI_STATUS_ITEM,(DWORD)&mcistatusparms);
return mcistatusparms.dwReturn;
}

void MediaPlayerDlg::OnButtonpause()
{
// TODO: Add your control notification handler code here
KillTimer(0);
DWORD dwsf=getinfo(MCI_STATUS_POSITION);
cdfrom=MCI_MAKE_MSF(MCI_MSF_MINUTE(dwsf),MCI_MSF_SECOND(dwsf),MCI_MSF_FRAME(dwsf));
mciSendCommand(m_count,MCI_CLOSE,0,NULL);
m_count=0;
playing=FALSE;

}