protected override void Open(string sFileName)
{
if (!m_bOpened)
{
string strFullPath = GetValidPathFile(sFileName);
if (String.IsNullOrEmpty(strFullPath))
{
return;
}
m_strCommand = "open \"" + strFullPath + "\" type mpegvideo alias " + m_strHandle;
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_bOpened = true;
m_bPlaying = false;
m_bPaused = false;
m_strCommand = "set " + m_strHandle + " time format milliseconds";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_strCommand = "set " + m_strHandle + " seek exactly on";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_strCommand = "status " + m_strHandle + " length";
String str = GUnrealLoop.Ptr.MCICommandQuery(m_strCommand);
if (str.Length > 0)
{
m_nLength = Convert.ToUInt64(str.ToString());
}
else
{
m_nLength = 0;
}
m_bClearing = false;
}
}
public override void UpdateVolume()
{
if (this.文件已载入)//设置音量后，只有已载入文件的channel才去实际设置音量，否则仅设置音量数值
{
int iVolumeAll = (int)(m_SoundInfo.音量 * m_fVolumeMult * m_fVolumeAttuMult * m_fVolumeMutedMult);
if (m_HostPlayer.静音 || m_bMuted)
{
iVolumeAll = 0;
}
m_strCommand = String.Format("setaudio {0} volume to {1}", m_strHandle, iVolumeAll);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
if (m_fVolBalance != 0)
{
string strL = "setaudio {0} left volume to {1}";
string strR = "setaudio {0} right volume to {1}";
if (m_fVolBalance < 0)
{
m_strCommand = String.Format(strL, m_strHandle, iVolumeAll);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
int vr = (int)((float)iVolumeAll * (m_fVolBalance - 1));
m_strCommand = String.Format(strR, m_strHandle, vr);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
else
{
m_strCommand = String.Format(strR, m_strHandle, iVolumeAll);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
int vl = (int)((float)iVolumeAll * (1 - m_fVolBalance));
m_strCommand = String.Format(strL, m_strHandle, vl);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
}
}
}
public override void Stop()
{
if (m_bOpened && m_bPlaying)
{
m_bPlaying = false;
m_bPaused = false;
m_strCommand = "seek " + m_strHandle + " to start";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_strCommand = "stop " + m_strHandle;
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
}
public override void Play()
{
if (!m_bOpened)
{
string strFile = 文件名;
if (strFile.Length > 0)
{
Open(strFile);
}
}
if (m_bOpened)
{
if (!m_bPlaying)
{
if (m_fFirstPlayDelayTick < 0 && m_SoundInfo.播放延迟时间 > 0)
{
m_fFirstPlayDelayTick = 0;
return;
}
m_bPlaying = true;
m_strCommand = "play " + m_strHandle;
//if (m_SoundInfo.是否循环) m_strCommand += " REPEAT";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
UpdateVolume();
if (m_bMuted)
{
m_strCommand = "setaudio " + m_strHandle + " off";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
}
else
{
if (!m_bPaused)
{
m_strCommand = "seek " + m_strHandle + " to start";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_strCommand = "play " + m_strHandle;
//if (m_SoundInfo.是否循环) m_strCommand += " REPEAT";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
else
{
m_bPaused = false;
m_strCommand = "play " + m_strHandle;
//if (m_SoundInfo.是否循环) m_strCommand += " REPEAT";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
}
}
}
public override void Clear()
{
if (m_bOpened)
{
if (m_bPlaying)
{
Stop();
}
m_strCommand = "close " + m_strHandle;
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_bOpened = false;
m_bPlaying = false;
m_bPaused = false;
m_aFileLst.Clear();
m_bClearing = false;
}
}
public override void Pause()
{
if (m_bOpened)
{
if (!m_bPaused)
{
m_bPaused = true;
m_strCommand = "pause " + m_strHandle;
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
else
{
m_bPaused = false;
m_strCommand = "play " + m_strHandle;
//if (m_SoundInfo.是否循环) m_strCommand += " REPEAT";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
}
}
public override void Seek(ulong Millisecs)
{
if (m_bOpened && Millisecs <= m_nLength)
{
if (m_bPlaying)
{
if (m_bPaused)
{
m_strCommand = String.Format("seek {0} to {1}", m_strHandle, Millisecs);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
else
{
m_strCommand = String.Format("seek {0} to {1}", m_strHandle, Millisecs);
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
m_strCommand = "play " + m_strHandle;
//if (m_SoundInfo.是否循环) m_strCommand += " REPEAT";
MCIERROR err = mciSendString(m_strCommand, NULL, 0, NULL);
}
}
}
}
