public TickPair TimeToTick(TimePair times)
{
return new TickPair(TimeToTick(times.Down), TimeToTick(times.Up));
}
// ----- Public Methods -----------------------------------------------
//////////////////////////////////////////////////////////////////////////
// Name: CPlayer
// Description: Constructor
//
/////////////////////////////////////////////////////////////////////////
public CPlayer(IntPtr hWnd)
{
m_hWnd = hWnd;
m_pMediaSession = null;
m_pSequencerSource = null;
m_pAudioRendererActivate = null;
m_pPresentationClock = null;
m_PresentationTimeOffset = 0;
m_phnsTimePairStart = null;
m_phnsTimePairEnd = null;
m_State = PlayerState.PlayerCreated;
m_ActiveSegment = -1;
m_hCloseEvent = new AutoResetEvent(false);
}
////////////////////////////////////////////////////////////////////////////////////////
// Name: CPlayer::GetCurrentSegmentTime (Public)
// Description:
// Gets the lastest play time of the current segment
// Parameter:
// phnsCurrentTime: [out] Playtime of the current segment
///////////////////////////////////////////////////////////////////////////////////////////
public int GetCurrentSegmentTime(out long phnsCurrentTime)
{
int hr = 0;
try
{
hr = m_pPresentationClock.GetTime(out phnsCurrentTime);
MFError.ThrowExceptionForHR(hr);
if (m_phnsTimePairStart != null)
{
if (phnsCurrentTime >= m_phnsTimePairStart.hnsStartPresentationTime)
{
//update m_PresentationTimeOffset
m_PresentationTimeOffset = m_phnsTimePairStart.hnsPresentationTimeOffset;
TimePair temp = m_phnsTimePairStart;
m_phnsTimePairStart = m_phnsTimePairStart.pNextTimePair;
}
}
phnsCurrentTime -= m_PresentationTimeOffset;
}
catch (Exception e)
{
hr = Marshal.GetHRForException(e);
phnsCurrentTime = 0;
}
return hr;
}
////////////////////////////////////////////////////////////////////////////////////////
// Name: CPlayer::HandleNotifyPresentationTime (Private)
// Description:
// Handles the media session's MESessionNotifyPresentationTime event
// Parameter:
// pEvent: [in] MESessionNotifyPresentationTime event
///////////////////////////////////////////////////////////////////////////////////////////
private void HandleNotifyPresentationTime(IMFMediaEvent pEvent)
{
if (pEvent == null)
{
throw new COMException("null pointer", E_Pointer);
}
if (m_phnsTimePairStart == null)
{
m_phnsTimePairStart = new TimePair();
m_phnsTimePairStart.pNextTimePair = null;
m_phnsTimePairEnd = m_phnsTimePairStart;
}
else
{
m_phnsTimePairEnd.pNextTimePair = new TimePair();
m_phnsTimePairEnd = m_phnsTimePairEnd.pNextTimePair;
m_phnsTimePairEnd.pNextTimePair = null;
}
int hr = pEvent.GetUINT64(
MFAttributesClsid.MF_EVENT_START_PRESENTATION_TIME,
out m_phnsTimePairEnd.hnsStartPresentationTime);
MFError.ThrowExceptionForHR(hr);
hr = pEvent.GetUINT64(
MFAttributesClsid.MF_EVENT_PRESENTATION_TIME_OFFSET,
out m_phnsTimePairEnd.hnsPresentationTimeOffset);
MFError.ThrowExceptionForHR(hr);
}
private void setEventPair(MidiEventPair pair, bool calcTime=true)
{
resetProps(pair.Owner);
_eventPair = pair;
if (_eventPair.Down != null)
{
if (_eventPair.Down.IsChannelEvent())
{
Data1 = _eventPair.Down.Data1;
Data2 = _eventPair.Down.Data2;
Channel = _eventPair.Down.Channel;
Command = _eventPair.Down.Command;
}
if (_eventPair.Down.IsTextEvent())
{
Text = _eventPair.Down.Text;
}
}
this.TickPair = new TickPair((_eventPair.Down == null ? Int32.MinValue : _eventPair.Down.AbsoluteTicks),
(_eventPair.Up == null ? Int32.MinValue : _eventPair.Up.AbsoluteTicks));
if (calcTime)
{
if (TickPair.IsValid)
{
this.TimePair = new TimePair(Owner.Owner.GuitarTrack.TickToTime(TickPair));
}
else if (TickPair.Down.IsNotNull())
{
var time = Owner.Owner.GuitarTrack.TickToTime(TickPair.Down);
this.TimePair = new TimePair(time, time);
}
}
}
private void resetProps(GuitarMessageList owner)
{
Owner = owner;
IsPro = (owner == null ? true : owner.IsPro);
Data1 = Int32.MinValue;
Data2 = Int32.MinValue;
Channel = Int32.MinValue;
Command = ChannelCommand.Invalid;
Text = string.Empty;
TickPair = TickPair.NullValue;
TimePair = TimePair.NullValue;
_eventPair = new MidiEventPair(owner);
}
