/// <summary>
/// CDAudio_GetAudioDiskInfo
/// </summary>
public void ReloadDiskInfo()
{
_IsValidDisc = false;
Mci.StatusParams sp = default(Mci.StatusParams);
sp.dwItem = Mci.MCI_STATUS_READY;
int ret = Mci.Status(_DeviceID, Mci.MCI_STATUS, Mci.MCI_STATUS_ITEM | Mci.MCI_WAIT, ref sp);
if (ret != 0)
{
Con.DPrint("CDAudio: drive ready test - get status failed\n");
return;
}
if (sp.dwReturn == 0)
{
Con.DPrint("CDAudio: drive not ready\n");
return;
}
sp.dwItem = Mci.MCI_STATUS_NUMBER_OF_TRACKS;
ret = Mci.Status(_DeviceID, Mci.MCI_STATUS, Mci.MCI_STATUS_ITEM | Mci.MCI_WAIT, ref sp);
if (ret != 0)
{
Con.DPrint("CDAudio: get tracks - status failed\n");
return;
}
if (sp.dwReturn < 1)
{
Con.DPrint("CDAudio: no music tracks\n");
return;
}
_IsValidDisc = true;
_MaxTrack = (byte)sp.dwReturn;
}
public void Play(byte track, bool looping)
{
if (!_IsEnabled)
{
return;
}
if (!_IsValidDisc)
{
ReloadDiskInfo();
if (!_IsValidDisc)
{
return;
}
}
track = _Remap[track];
if (track < 1 || track > _MaxTrack)
{
Con.DPrint("CDAudio: Bad track number {0}.\n", track);
return;
}
// don't try to play a non-audio track
Mci.StatusParams sp = default(Mci.StatusParams);
sp.dwItem = Mci.MCI_CDA_STATUS_TYPE_TRACK;
sp.dwTrack = track;
int ret = Mci.Status(_DeviceID, Mci.MCI_STATUS, Mci.MCI_STATUS_ITEM | Mci.MCI_TRACK | Mci.MCI_WAIT, ref sp);
if (ret != 0)
{
Con.DPrint("MCI_STATUS failed ({0})\n", ret);
return;
}
if (sp.dwReturn != Mci.MCI_CDA_TRACK_AUDIO)
{
Con.Print("CDAudio: track {0} is not audio\n", track);
return;
}
// get the length of the track to be played
sp.dwItem = Mci.MCI_STATUS_LENGTH;
sp.dwTrack = track;
ret = Mci.Status(_DeviceID, Mci.MCI_STATUS, Mci.MCI_STATUS_ITEM | Mci.MCI_TRACK | Mci.MCI_WAIT, ref sp);
if (ret != 0)
{
Con.DPrint("MCI_STATUS failed ({0})\n", ret);
return;
}
if (_IsPlaying)
{
if (_PlayTrack == track)
{
return;
}
Stop();
}
Mci.PlayParams pp;
pp.dwFrom = Mci.MCI_MAKE_TMSF(track, 0, 0, 0);
pp.dwTo = (sp.dwReturn << 8) | track;
pp.dwCallback = _Form.Handle;
ret = Mci.Play(_DeviceID, Mci.MCI_PLAY, Mci.MCI_NOTIFY | Mci.MCI_FROM | Mci.MCI_TO, ref pp);
if (ret != 0)
{
Con.DPrint("CDAudio: MCI_PLAY failed ({0})\n", ret);
return;
}
_IsLooping = looping;
_PlayTrack = track;
_IsPlaying = true;
if (_Volume == 0)
{
Pause();
}
}