/// <summary>
/// This function can be called by a background thread. It finishes building the graph and
/// waits until the buffer is filled to the configured percentage.
/// If a filter in the graph requires the full file to be downloaded, the function will return only afterwards.
/// </summary>
/// <returns>true, when playback can be started</returns>
public bool BufferFile()
{
Thread renderPinsThread = null;
VideoRendererStatistics.VideoState = VideoRendererStatistics.State.VideoPresent; // prevents the BlackRectangle on first time playback
bool PlaybackReady = false;
IBaseFilter sourceFilter = null;
try
{
int result = graphBuilder.FindFilterByName(sourceFilterName, out sourceFilter);
if (result != 0)
{
string errorText = DirectShowLib.DsError.GetErrorText(result);
if (errorText != null)
{
errorText = errorText.Trim();
}
Logger.Instance.Warn("BufferFile : FindFilterByName returned '{0}'{1}", "0x" + result.ToString("X8"), !string.IsNullOrEmpty(errorText) ? " : (" + errorText + ")" : "");
return(false);
}
Marshal.ThrowExceptionForHR(((IFileSourceFilter)sourceFilter).Load(m_strCurrentFile, null));
OnlineVideos.MPUrlSourceFilter.IFilterState filterState = sourceFilter as OnlineVideos.MPUrlSourceFilter.IFilterState;
if (sourceFilter is IAMOpenProgress)
{
// buffer before starting playback
bool filterConnected = false;
percentageBuffered = 0.0f;
long total = 0, current = 0, last = 0;
do
{
result = ((IAMOpenProgress)sourceFilter).QueryProgress(out total, out current);
Marshal.ThrowExceptionForHR(result);
percentageBuffered = (float)current / (float)total * 100.0f;
// after configured percentage has been buffered, connect the graph
if (!filterConnected && (percentageBuffered >= bufferPercent || skipBuffering))
{
if (((filterState != null) && (filterState.IsFilterReadyToConnectPins())) ||
(filterState == null))
{
//cacheFile = filterState.GetCacheFileName();
if (skipBuffering)
{
Logger.Instance.Debug("Buffering skipped at {0}%", percentageBuffered);
}
filterConnected = true;
renderPinsThread = new Thread(delegate()
{
try
{
Logger.Instance.Debug("BufferFile : Rendering unconnected output pins of source filter ...");
// add audio and video filter from MP Movie Codec setting section
AddPreferredFilters(graphBuilder, sourceFilter);
// connect the pin automatically -> will buffer the full file in cases of bad metadata in the file or request of the audio or video filter
DirectShowUtil.RenderUnconnectedOutputPins(graphBuilder, sourceFilter);
Logger.Instance.Debug("BufferFile : Playback Ready.");
PlaybackReady = true;
}
catch (ThreadAbortException)
{
Thread.ResetAbort();
Logger.Instance.Info("RenderUnconnectedOutputPins foribly aborted.");
}
catch (Exception ex)
{
Logger.Instance.Warn(ex.Message);
StopBuffering();
}
})
{
IsBackground = true, Name = "AirPlayerGraph"
};
renderPinsThread.Start();
}
}
// log every percent
if (current > last && current - last >= (double)total * 0.01)
{
Logger.Instance.Debug("Buffering: {0}/{1} KB ({2}%)", current / 1024, total / 1024, (int)percentageBuffered);
last = current;
}
// set the percentage to a gui property, formatted according to percentage, so the user knows very early if anything is buffering
string formatString = "###";
if (percentageBuffered == 0f)
{
formatString = "0.0";
}
else if (percentageBuffered < 1f)
{
formatString = ".00";
}
else if (percentageBuffered < 10f)
{
formatString = "0.0";
}
else if (percentageBuffered < 100f)
{
formatString = "##";
}
GUIPropertyManager.SetProperty("#AirPlayerVideo.buffered", percentageBuffered.ToString(formatString, System.Globalization.CultureInfo.InvariantCulture));
Thread.Sleep(50); // no need to do this more often than 20 times per second
}while (!PlaybackReady && graphBuilder != null && !BufferingStopped);
}
else
{
if (filterState != null)
{
while (!filterState.IsFilterReadyToConnectPins())
{
Thread.Sleep(50);
}
//cacheFile = filterState.GetCacheFileName();
}
// add audio and video filter from MP Movie Codec setting section
AddPreferredFilters(graphBuilder, sourceFilter);
// connect the pin automatically -> will buffer the full file in cases of bad metadata in the file or request of the audio or video filter
DirectShowUtil.RenderUnconnectedOutputPins(graphBuilder, sourceFilter);
percentageBuffered = 100.0f; // no progress reporting possible
GUIPropertyManager.SetProperty("#TV.Record.percent3", percentageBuffered.ToString());
PlaybackReady = true;
}
}
catch (ThreadAbortException)
{
Thread.ResetAbort();
}
catch (COMException comEx)
{
Logger.Instance.Warn(comEx.ToString());
if (sourceFilterName == MPURL_SOURCE_FILTER &&
Enum.IsDefined(typeof(OnlineVideos.MPUrlSourceFilter.MPUrlSourceSplitterError), comEx.ErrorCode))
{
throw new Exception(((OnlineVideos.MPUrlSourceFilter.MPUrlSourceSplitterError)comEx.ErrorCode).ToString());
}
string errorText = DirectShowLib.DsError.GetErrorText(comEx.ErrorCode);
if (errorText != null)
{
errorText = errorText.Trim();
}
if (!string.IsNullOrEmpty(errorText))
{
throw new Exception(errorText);
}
}
catch (Exception ex)
{
Logger.Instance.Warn(ex.ToString());
}
finally
{
if (sourceFilter != null)
{
// the render pin thread was already started and is still runnning
if (renderPinsThread != null && (renderPinsThread.ThreadState & ThreadState.Stopped) == 0)
{
// buffering was stopped by the user -> abort the thread
if (BufferingStopped)
{
renderPinsThread.Abort();
}
}
// playback is not ready but the source filter is already downloading -> abort the operation
if (!PlaybackReady)
{
Logger.Instance.Info("Buffering was aborted.");
if (sourceFilter != null)
{
((IAMOpenProgress)sourceFilter).AbortOperation();
}
Thread.Sleep(100); // give it some time
int result = graphBuilder.RemoveFilter(sourceFilter); // remove the filter from the graph to prevent lockup later in Dispose
}
// release the COM pointer that we created
DirectShowUtil.ReleaseComObject(sourceFilter);
}
}
return(PlaybackReady);
}
public bool Play(string fileName, Control parent, out string ErrorOrSplitter)
{
ErrorOrSplitter = "";
int hr;
_parentControl = parent;
_graphBuilder = (IFilterGraph2) new FilterGraph();
_rotEntry = new DsROTEntry(_graphBuilder);
// add the video renderer (evr does not seem to work here)
IBaseFilter vmr9Renderer = DirectShowUtil.AddFilterToGraph(_graphBuilder, "Video Mixing Renderer 9");
((IVMRAspectRatioControl9)vmr9Renderer).SetAspectRatioMode(VMRAspectRatioMode.LetterBox);
DirectShowUtil.ReleaseComObject(vmr9Renderer, 2000);
// add the audio renderer
IBaseFilter audioRenderer = DirectShowUtil.AddAudioRendererToGraph(_graphBuilder, MPSettings.Instance.GetValueAsString("movieplayer", "audiorenderer", "Default DirectSound Device"), false);
DirectShowUtil.ReleaseComObject(audioRenderer, 2000);
// add the source filter
string sourceFilterName = OnlineVideos.MediaPortal1.Player.OnlineVideosPlayer.GetSourceFilterName(fileName);
if (string.IsNullOrEmpty(sourceFilterName))
{
return(false);
}
IBaseFilter sourceFilter = null;
try
{
sourceFilter = DirectShowUtil.AddFilterToGraph(_graphBuilder, sourceFilterName);
}
catch (Exception ex)
{
ErrorOrSplitter = ex.Message;
return(false);
}
hr = ((IFileSourceFilter)sourceFilter).Load(fileName, null);
if (hr != 0)
{
ErrorOrSplitter = DirectShowLib.DsError.GetErrorText(hr);
DirectShowUtil.ReleaseComObject(sourceFilter, 2000);
return(false);
}
// wait for our filter to buffer before rendering the pins
OnlineVideos.MPUrlSourceFilter.IFilterState filterState = sourceFilter as OnlineVideos.MPUrlSourceFilter.IFilterState;
if (filterState != null)
{
bool ready = false;
while ((!ready) && (hr == 0))
{
hr = filterState.IsFilterReadyToConnectPins(out ready);
System.Threading.Thread.Sleep(25);
}
}
if (hr != 0)
{
ErrorOrSplitter = DirectShowLib.DsError.GetErrorText(hr);
DirectShowUtil.ReleaseComObject(sourceFilter, 2000);
return(false);
}
OnlineVideos.MediaPortal1.Player.OnlineVideosPlayer.AddPreferredFilters(_graphBuilder, sourceFilter);
// try to connect the filters
int numConnected = 0;
IEnumPins pinEnum;
hr = sourceFilter.EnumPins(out pinEnum);
if ((hr == 0) && (pinEnum != null))
{
pinEnum.Reset();
IPin[] pins = new IPin[1];
int iFetched;
int iPinNo = 0;
do
{
iPinNo++;
hr = pinEnum.Next(1, pins, out iFetched);
if (hr == 0)
{
if (iFetched == 1 && pins[0] != null)
{
PinDirection pinDir;
pins[0].QueryDirection(out pinDir);
if (pinDir == PinDirection.Output)
{
hr = _graphBuilder.Render(pins[0]);
if (hr == 0)
{
numConnected++;
IPin connectedPin;
if (pins[0].ConnectedTo(out connectedPin) == 0 && connectedPin != null)
{
PinInfo connectedPinInfo;
connectedPin.QueryPinInfo(out connectedPinInfo);
FilterInfo connectedFilterInfo;
connectedPinInfo.filter.QueryFilterInfo(out connectedFilterInfo);
DirectShowUtil.ReleaseComObject(connectedPin, 2000);
IBaseFilter connectedFilter;
if (connectedFilterInfo.pGraph.FindFilterByName(connectedFilterInfo.achName, out connectedFilter) == 0 && connectedFilter != null)
{
var codecInfo = GetCodecInfo(connectedFilter, connectedFilterInfo.achName);
if (codecInfo != null)
{
if (string.IsNullOrEmpty(ErrorOrSplitter))
{
ErrorOrSplitter = codecInfo.ToString();
}
else
{
ErrorOrSplitter += ", " + codecInfo.ToString();
}
}
DirectShowUtil.ReleaseComObject(connectedFilter);
}
}
}
}
DirectShowUtil.ReleaseComObject(pins[0], 2000);
}
}
} while (iFetched == 1);
}
DirectShowUtil.ReleaseComObject(pinEnum, 2000);
if (numConnected > 0)
{
_videoWin = _graphBuilder as IVideoWindow;
if (_videoWin != null)
{
_videoWin.put_Owner(_parentControl.Handle);
_videoWin.put_WindowStyle((WindowStyle)((int)WindowStyle.Child + (int)WindowStyle.ClipSiblings + (int)WindowStyle.ClipChildren));
_videoWin.SetWindowPosition(_parentControl.ClientRectangle.X, _parentControl.ClientRectangle.Y, _parentControl.ClientRectangle.Width, _parentControl.ClientRectangle.Height);
_videoWin.put_Visible(OABool.True);
}
_mediaCtrl = (IMediaControl)_graphBuilder;
hr = _mediaCtrl.Run();
mediaEvents = (IMediaEventEx)_graphBuilder;
// Have the graph signal event via window callbacks for performance
mediaEvents.SetNotifyWindow(_parentControl.FindForm().Handle, WMGraphNotify, IntPtr.Zero);
_parentControl.SizeChanged += _parentControl_SizeChanged;
return(true);
}
else
{
ErrorOrSplitter = string.Format("Could not render output pins of {0}", sourceFilterName);
DirectShowUtil.ReleaseComObject(sourceFilter, 2000);
Stop();
return(false);
}
}
