/// <summary>
/// Replaces the internally-held frames with the specified new frames.
/// </summary>
/// <param name="newFrames">The new frames.</param>
/// <exception cref="System.IndexOutOfRangeException">Buffer does not support the capacity of new elements</exception>
public void Replace(FFmpegMediaFrameCache newFrames)
{
if (newFrames.Count > Capacity)
{
throw new IndexOutOfRangeException("Buffer does not support the capacity of new elements");
}
foreach (var frame in Frames)
{
frame.EnqueueRelease();
}
Frames.Clear();
foreach (var frame in newFrames.Frames)
{
if (frame.Type != this.Type)
{
this.ThrowInvalidFrameTypeException(frame.Type);
}
Frames.Add(frame);
}
RecomputeProperties();
}
/// <summary>
/// Initializes a new instance of the <see cref="FFmpegMediaFrameCache"/> class.
/// This copies all properties from an existing cache excluding frames of course.
/// </summary>
/// <param name="otherCache">The other cache.</param>
public FFmpegMediaFrameCache(FFmpegMediaFrameCache otherCache)
{
var capacity = otherCache.Capacity;
this.Type = otherCache.Type;
this.Capacity = capacity;
RecomputeProperties();
}
/// <summary>
/// Initializes a new instance of the <see cref="FFmpegMedia"/> class.
/// </summary>
/// <param name="filePath">The file path.</param>
/// <param name="errorCallback">The error callback.</param>
/// <exception cref="System.ArgumentException">
/// errorCallback cannot be null
/// or
/// filePath cannot be null or empty
/// </exception>
/// <exception cref="System.Exception"></exception>
public FFmpegMedia(string filePath, MediaErrorOccurredCallback errorCallback)
{
// Argument validation
if (errorCallback == null)
{
throw new ArgumentException("errorCallback cannot be null");
}
if (string.IsNullOrWhiteSpace(filePath))
{
throw new ArgumentException("filePath cannot be null or empty");
}
// Error callback
this.ErrorOccurredCallback = errorCallback;
// Register the property state change handler
this.RealtimeClock.PropertyChanged += (s, e) => { NotifyPlayStateChanged(); };
// Make sure we registwered the library
Helper.RegisterFFmpeg();
// Create the audio provider and audio renderer
this.PcmAudioProvider = new AudioBufferProvider(this);
this.AudioRenderer = new AudioRenderer();
// load input, codec and output contexts
this.InitializeMedia(filePath);
// Setup the frames Cache
this.VideoFramesCache = new FFmpegMediaFrameCache(this.VideoFrameRate, MediaFrameType.Video);
this.AudioFramesCache = new FFmpegMediaFrameCache(this.AudioSampleRate / 1000M, MediaFrameType.Audio);
// Setup the Leading and Lagging frames cache
if (HasVideo && (HasAudio == false || InputAudioStream->index > InputVideoStream->index))
{
this.LeadingFramesCache = VideoFramesCache;
this.LaggingFramesCache = AudioFramesCache;
this.StartDts = InputVideoStream->start_time;
LeadingStreamType = MediaFrameType.Video;
LaggingStreamType = HasAudio ? MediaFrameType.Audio : MediaFrameType.Unknown;
}
else
{
this.LeadingFramesCache = AudioFramesCache;
this.LaggingFramesCache = VideoFramesCache;
this.StartDts = InputAudioStream->start_time;
LeadingStreamType = MediaFrameType.Audio;
LaggingStreamType = HasVideo ? MediaFrameType.Video : MediaFrameType.Unknown;
}
if (Helper.IsNoPtsValue(StartDts))
{
StartDts = 0;
}
// Setup Video Renderer and Video Frames Cache
if (HasVideo)
{
this.VideoRenderer = new WriteableBitmap(this.VideoFrameWidth, this.VideoFrameHeight, 96, 96, System.Windows.Media.PixelFormats.Bgr24, null);
}
else
{
this.VideoRenderer = new WriteableBitmap(1, 1, 96, 96, System.Windows.Media.PixelFormats.Bgr24, null);
}
// Setup Audio Renderer and Audio Frames Cache
if (HasAudio)
{
this.StartAudioRenderer();
}
// Start the continuous Decoder thread that fills up our queue.
MediaFrameExtractorThread = new Thread(ExtractMediaFramesContinuously)
{
IsBackground = true,
Priority = ThreadPriority.AboveNormal
};
// Begin the media extractor
MediaFrameExtractorThread.Start();
MediaFramesExtractedDone.Reset();
if (MediaFramesExtractedDone.Wait(Constants.WaitForPlaybackReadyStateTimeout) == false)
{
throw new Exception(string.Format("Could not load sream frames in a timely manner. Timed out in {0}", Constants.WaitForPlaybackReadyStateTimeout));
}
// Initialize the Speed Ratio to 1.0 (Default)
this.SpeedRatio = Constants.DefaultSpeedRatio;
// Start the render timer on the UI thread.
this.VideoRenderTimer.Tick += RenderVideoImage;
this.VideoRenderTimer.Interval = TimeSpan.FromMilliseconds(Constants.VideoRenderTimerIntervalMillis);
this.VideoRenderTimer.IsEnabled = true;
this.VideoRenderTimer.Start();
}
/// <summary>
/// Internals the seek input.
/// </summary>
/// <param name="renderTime">The render time.</param>
private void InternalSeekInput(decimal renderTime)
{
if (IsLiveStream)
{
if (LeadingFramesCache.IsEmpty == false)
{
RealtimeClock.Seek(LeadingFramesCache.FirstFrameTime);
}
return;
}
#if DEBUG
var seekStopwatch = new System.Diagnostics.Stopwatch();
seekStopwatch.Start();
#endif
if (renderTime < StartTime)
{
renderTime = StartTime;
}
RealtimeClock.Seek(renderTime);
var allowedThreshold = Constants.SeekThresholdSeconds;
var seekOffsetLength = Constants.SeekOffsetSeconds;
var seekTime = renderTime - seekOffsetLength;
var maxSeekStartTime = seekTime - allowedThreshold;
var bufferedLeadingFrames = new FFmpegMediaFrameCache(LeadingFramesCache);
var bufferedLaggingFrames = new FFmpegMediaFrameCache(LaggingFramesCache);
var outerLoopCount = 0;
var innerLoopCount = 0;
var frameReleaseCount = 0;
var doSeekInStream = true;
var doSeekByPullingFrames = true;
var seekFlag = 0;
var seekFrameResult = 0;
var startTime = DateTime.UtcNow;
var lastFailedTimestamp = long.MinValue;
var seekToLastFrame = false;
var seekTimeBase = LeadingFramesCache.Type == MediaFrameType.Video ? InputVideoStream->time_base : InputAudioStream->time_base;
var seekStreamIndex = LeadingFramesCache.Type == MediaFrameType.Video ? InputVideoStream->index : InputAudioStream->index;
var leadingFrameIndex = -1;
try
{
while (doSeekInStream)
{
outerLoopCount++;
if (seekTime < StartTime)
{
seekTime = StartTime;
}
if (lastFailedTimestamp == StartDts)
{
if (LeadingFramesCache.IsEmpty == false)
{
RealtimeClock.Seek(LeadingFramesCache.FirstFrameTime);
}
ErrorOccurredCallback(this, new MediaPlaybackException(MediaPlaybackErrorSources.InternalSeekInput, MediaPlaybackErrorCode.SeekFailedCritical,
string.Format("Target Postion @ {0:0.000}s has already failed to seek. First DTS {1} also failed and will not retry.", seekTime, StartDts)));
return;
}
var targetTimestamp = Helper.SecondsToTimestamp(seekTime, seekTimeBase);
if (lastFailedTimestamp == targetTimestamp)
{
ErrorOccurredCallback(this, new MediaPlaybackException(MediaPlaybackErrorSources.InternalSeekInput, MediaPlaybackErrorCode.SeekFailedWillRetry,
string.Format("Target Postion @ {0:0.000}s has already failed to seek. Target timestamp will now be First DTS {1}.", seekTime, StartDts)));
targetTimestamp = StartDts;
}
seekFlag = (seekTime < renderTime || seekTime <= StartTime ? (int)ffmpeg.AVSEEK_FLAG_BACKWARD : 0) | 0; // FFmpegInvoke.AVSEEK_FLAG_ANY;
//seekFlag = FFmpegInvoke.AVSEEK_FLAG_BACKWARD; // | FFmpegInvoke.AVSEEK_FLAG_ANY;
seekFrameResult = ffmpeg.av_seek_frame(InputFormatContext, seekStreamIndex, targetTimestamp, seekFlag); // significantly faster than seek_file
//seekFrameResult = FFmpegInvoke.avformat_seek_file(InputFormatContext, streamIndex, long.MinValue, targetTimestamp, long.MaxValue, seekFlag);
if (seekFrameResult < Constants.SuccessCode)
{
if (LeadingFramesCache.IsEmpty == false)
{
RealtimeClock.Seek(LeadingFramesCache.FirstFrameTime);
}
var errorMessage = Helper.GetFFmpegErrorMessage(seekFrameResult);
ErrorOccurredCallback(this, new MediaPlaybackException(MediaPlaybackErrorSources.InternalSeekInput, MediaPlaybackErrorCode.SeekFailedFFmpeg,
string.Format("FFmpeg av_seek_frame @ {1:0.000}: Failed with error code {0}. {2}", seekFrameResult, seekTime, errorMessage)));
return;
}
else
{
if (VideoCodecContext != null)
{
ffmpeg.avcodec_flush_buffers(VideoCodecContext);
}
if (AudioCodecContext != null)
{
ffmpeg.avcodec_flush_buffers(AudioCodecContext);
}
}
leadingFrameIndex = -1;
bufferedLeadingFrames.Clear();
bufferedLaggingFrames.Clear();
doSeekInStream = false;
doSeekByPullingFrames = true;
while (doSeekByPullingFrames)
{
innerLoopCount++;
var frame = this.PullMediaFrame();
if (frame != null)
{
if (frame.StartTime < maxSeekStartTime)
{
frame.EnqueueRelease();
frameReleaseCount++;
continue;
}
if (frame.Type == bufferedLeadingFrames.Type)
{
leadingFrameIndex++;
if (leadingFrameIndex == 0 && frame.Type == bufferedLeadingFrames.Type && frame.StartTime - frame.Duration > maxSeekStartTime && maxSeekStartTime > 0M)
{
seekTime -= seekOffsetLength;
frame.EnqueueRelease();
doSeekInStream = true;
lastFailedTimestamp = targetTimestamp;
break;
}
// We are Full minus 1 at this point. We'll stop buffering
if (bufferedLeadingFrames.Count >= bufferedLeadingFrames.Capacity - 1)
{
doSeekByPullingFrames = false;
}
bufferedLeadingFrames.Add(frame);
}
else if (frame.Type == bufferedLaggingFrames.Type)
{
// add the lagging frame no matter what
if (bufferedLaggingFrames.IsFull)
{
bufferedLaggingFrames.RemoveFirst();
}
bufferedLaggingFrames.Add(frame);
}
// Find out if we have the frame
var seekFrameIndex = bufferedLeadingFrames.IndexOf(renderTime, true);
var minimumFrameCount = (seekFrameIndex - 1) * 2;
// if we have more than enough frames in the buffer or we have reached a full or end condition, stop buffering frames
if (seekFrameIndex > 0)
{
if (bufferedLeadingFrames.Count >= minimumFrameCount || bufferedLeadingFrames.IsFull || IsAtEndOfStream)
{
doSeekByPullingFrames = false;
}
}
}
// We're already padt the end of the stream. Natural duration was wron for the leading frames cache.
if (IsAtEndOfStream && bufferedLeadingFrames.Count <= 0)
{
doSeekInStream = true;
seekTime -= seekOffsetLength;
maxSeekStartTime = seekTime - allowedThreshold;
seekToLastFrame = true;
}
if (doSeekInStream)
{
break;
}
if (doSeekByPullingFrames == false || IsAtEndOfStream)
{
LeadingFramesCache.Replace(bufferedLeadingFrames);
LaggingFramesCache.Replace(bufferedLaggingFrames);
if (seekToLastFrame && LeadingFramesCache.Count > 0)
{
RealtimeClock.Seek(LeadingFramesCache.LastFrameTime);
}
return;
}
}
}
}
finally
{
#if DEBUG
seekStopwatch.Stop();
SeekTimes.Add(seekStopwatch.ElapsedMilliseconds);
InnerLoopCounts.Add(innerLoopCount);
System.Diagnostics.Debug.WriteLine("Seek @ {6:0.000} = Long: {0:00}\t Short: {1:000}\t Short (AVG): {2:0.000}\t Waste Count: {3:000}\t Elapsed: {4}\tElapsed (AVG): {5:0.000}",
outerLoopCount, innerLoopCount, InnerLoopCounts.Average(), frameReleaseCount, seekStopwatch.ElapsedMilliseconds, SeekTimes.Average(), renderTime);
#endif
}
}
/// <summary>
/// Replaces the internally-held frames with the specified new frames.
/// </summary>
/// <param name="newFrames">The new frames.</param>
/// <exception cref="System.IndexOutOfRangeException">Buffer does not support the capacity of new elements</exception>
public void Replace(FFmpegMediaFrameCache newFrames)
{
lock (SyncLock)
{
if (newFrames.Count > Capacity)
throw new IndexOutOfRangeException("Buffer does not support the capacity of new elements");
foreach (var frame in Frames)
frame.EnqueueRelease();
Frames.Clear();
try
{
foreach (var frame in newFrames.Frames)
{
if (frame.Type != this.Type)
this.ThrowInvalidFrameTypeException(frame.Type);
Frames.Add(frame);
}
}
finally
{
RecomputeProperties();
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="FFmpegMediaFrameCache"/> class.
/// This copies all properties from an existing cache excluding frames of course.
/// </summary>
/// <param name="otherCache">The other cache.</param>
public FFmpegMediaFrameCache(FFmpegMediaFrameCache otherCache)
{
var capacity = otherCache.Capacity;
Type = otherCache.Type;
Capacity = capacity;
RecomputeProperties();
}
/// <summary>
/// Initializes a new instance of the <see cref="FFmpegMedia" /> class.
/// </summary>
/// <param name="filePath">The file path.</param>
/// <param name="errorCallback">The error callback.</param>
/// <param name="referer">The referer. Leave null or emtpy to skip setting it.</param>
/// <param name="userAgent">The user agent. Leave null or empty in order to skip setting a User Agent</param>
/// <exception cref="ArgumentException">errorCallback cannot be null
/// or
/// filePath cannot be null or empty</exception>
/// <exception cref="Exception"></exception>
/// <exception cref="System.ArgumentException">errorCallback cannot be null
/// or
/// filePath cannot be null or empty</exception>
/// <exception cref="System.Exception"></exception>
public FFmpegMedia(string filePath, MediaErrorOccurredCallback errorCallback, string referer, string userAgent)
{
// Argument validation
if (errorCallback == null)
throw new ArgumentException("errorCallback cannot be null");
if (string.IsNullOrWhiteSpace(filePath))
throw new ArgumentException("filePath cannot be null or empty");
// Error callback
this.ErrorOccurredCallback = errorCallback;
// Register the property state change handler
this.RealtimeClock.PropertyChanged += (s, e) => { NotifyPlayStateChanged(); };
// Make sure we registwered the library
Helper.RegisterFFmpeg();
// Create the audio provider and audio renderer
this.PcmAudioProvider = new AudioBufferProvider(this);
this.AudioRenderer = new AudioRenderer();
// load input, codec and output contexts
this.InitializeMedia(filePath, null, referer, userAgent);
// Setup the frames Cache
this.VideoFramesCache = new FFmpegMediaFrameCache(this.VideoFrameRate * (int)FramesCacheLength.TotalSeconds, MediaFrameType.Video);
this.AudioFramesCache = new FFmpegMediaFrameCache(this.AudioSampleRate / (int)FramesCacheLength.TotalMilliseconds, MediaFrameType.Audio);
// Setup the Leading and Lagging frames cache
if (HasVideo && (HasAudio == false || InputAudioStream->index > InputVideoStream->index))
{
this.PrimaryFramesCache = VideoFramesCache;
this.SecondaryFramesCache = AudioFramesCache;
this.StartDts = InputVideoStream->start_time;
LeadingStreamType = MediaFrameType.Video;
LaggingStreamType = HasAudio ? MediaFrameType.Audio : MediaFrameType.Unknown;
}
else
{
this.PrimaryFramesCache = AudioFramesCache;
this.SecondaryFramesCache = VideoFramesCache;
this.StartDts = InputAudioStream->start_time;
LeadingStreamType = MediaFrameType.Audio;
LaggingStreamType = HasVideo ? MediaFrameType.Video : MediaFrameType.Unknown;
}
if (Helper.IsNoPtsValue(StartDts))
StartDts = 0;
// Setup Video Renderer and Video Frames Cache
if (HasVideo)
this.VideoRenderer = new WriteableBitmap(this.VideoFrameWidth, this.VideoFrameHeight, 96, 96, System.Windows.Media.PixelFormats.Bgr24, null);
else
this.VideoRenderer = new WriteableBitmap(1, 1, 96, 96, System.Windows.Media.PixelFormats.Bgr24, null);
// Setup Audio Renderer and Audio Frames Cache
if (HasAudio)
{
this.StartAudioRenderer();
}
// Start the continuous Decoder thread that fills up our queue.
MediaFrameExtractorThread = new Thread(ExtractMediaFramesContinuously)
{
IsBackground = true,
Priority = ThreadPriority.AboveNormal
};
// Begin the media extractor
MediaFrameExtractorThread.Start();
MediaFramesExtractedDone.Reset();
if (MediaFramesExtractedDone.Wait(Constants.WaitForPlaybackReadyStateTimeout) == false)
{
throw new Exception(string.Format("Could not load sream frames in a timely manner. Timed out in {0}", Constants.WaitForPlaybackReadyStateTimeout));
}
// Initialize the Speed Ratio to 1.0 (Default)
this.SpeedRatio = Constants.DefaultSpeedRatio;
// Start the render timer on the UI thread.
this.VideoRenderTimer.Tick += RenderVideoImage;
this.VideoRenderTimer.Interval = TimeSpan.FromMilliseconds(Constants.VideoRenderTimerIntervalMillis);
this.VideoRenderTimer.IsEnabled = true;
this.VideoRenderTimer.Start();
}
/// <summary>
/// Internals the seek input.
/// </summary>
/// <param name="renderTime">The render time.</param>
private void InternalSeekInput(decimal renderTime)
{
if (IsLiveStream)
{
if (PrimaryFramesCache.IsEmpty == false)
RealtimeClock.Seek(PrimaryFramesCache.FirstFrameTime);
return;
}
#if DEBUG
var seekStopwatch = new System.Diagnostics.Stopwatch();
seekStopwatch.Start();
#endif
if (renderTime < StartTime)
renderTime = StartTime;
RealtimeClock.Seek(renderTime);
var allowedThreshold = Constants.SeekThresholdSeconds;
var seekOffsetLength = Constants.SeekOffsetSeconds;
var seekTime = renderTime - seekOffsetLength;
var maxSeekStartTime = seekTime - allowedThreshold;
var bufferedLeadingFrames = new FFmpegMediaFrameCache(PrimaryFramesCache);
var bufferedLaggingFrames = new FFmpegMediaFrameCache(SecondaryFramesCache);
var outerLoopCount = 0;
var innerLoopCount = 0;
var frameReleaseCount = 0;
var doSeekInStream = true;
var doSeekByPullingFrames = true;
var seekFlag = 0;
var seekFrameResult = 0;
var startTime = DateTime.UtcNow;
var lastFailedTimestamp = long.MinValue;
var seekToLastFrame = false;
var seekTimeBase = PrimaryFramesCache.Type == MediaFrameType.Video ? InputVideoStream->time_base : InputAudioStream->time_base;
var seekStreamIndex = PrimaryFramesCache.Type == MediaFrameType.Video ? InputVideoStream->index : InputAudioStream->index;
var leadingFrameIndex = -1;
try
{
while (doSeekInStream)
{
outerLoopCount++;
if (seekTime < StartTime) seekTime = StartTime;
if (lastFailedTimestamp == StartDts)
{
if (PrimaryFramesCache.IsEmpty == false)
RealtimeClock.Seek(PrimaryFramesCache.FirstFrameTime);
ErrorOccurredCallback(this, new MediaPlaybackException(MediaPlaybackErrorSources.InternalSeekInput, MediaPlaybackErrorCode.SeekFailedCritical,
string.Format("Target Postion @ {0:0.000}s has already failed to seek. First DTS {1} also failed and will not retry.", seekTime, StartDts)));
return;
}
var targetTimestamp = Helper.SecondsToTimestamp(seekTime, seekTimeBase);
if (lastFailedTimestamp == targetTimestamp)
{
ErrorOccurredCallback(this, new MediaPlaybackException(MediaPlaybackErrorSources.InternalSeekInput, MediaPlaybackErrorCode.SeekFailedWillRetry,
string.Format("Target Postion @ {0:0.000}s has already failed to seek. Target timestamp will now be First DTS {1}.", seekTime, StartDts)));
targetTimestamp = StartDts;
}
seekFlag = (seekTime < renderTime || seekTime <= StartTime ? (int)ffmpeg.AVSEEK_FLAG_BACKWARD : 0) | 0; // FFmpegInvoke.AVSEEK_FLAG_ANY;
//seekFlag = ffmpeg.AVSEEK_FLAG_BACKWARD; // | ffmpeg.AVSEEK_FLAG_ANY;
seekFrameResult = ffmpeg.av_seek_frame(InputFormatContext, seekStreamIndex, targetTimestamp, seekFlag); // significantly faster than seek_file
//seekFrameResult = ffmpeg.avformat_seek_file(InputFormatContext, seekStreamIndex, targetTimestamp - 2, targetTimestamp, targetTimestamp + 2, seekFlag);
if (seekFrameResult < Constants.SuccessCode)
{
if (PrimaryFramesCache.IsEmpty == false)
RealtimeClock.Seek(PrimaryFramesCache.FirstFrameTime);
var errorMessage = Helper.GetFFmpegErrorMessage(seekFrameResult);
ErrorOccurredCallback(this, new MediaPlaybackException(MediaPlaybackErrorSources.InternalSeekInput, MediaPlaybackErrorCode.SeekFailedFFmpeg,
string.Format("FFmpeg av_seek_frame @ {1:0.000}: Failed with error code {0}. {2}", seekFrameResult, seekTime, errorMessage)));
return;
}
else
{
if (VideoCodecContext != null)
ffmpeg.avcodec_flush_buffers(VideoCodecContext);
if (AudioCodecContext != null)
ffmpeg.avcodec_flush_buffers(AudioCodecContext);
}
leadingFrameIndex = -1;
bufferedLeadingFrames.Clear();
bufferedLaggingFrames.Clear();
doSeekInStream = false;
doSeekByPullingFrames = true;
while (doSeekByPullingFrames)
{
innerLoopCount++;
var frame = this.PullMediaFrame();
if (frame != null)
{
if (frame.StartTime < maxSeekStartTime)
{
frame.EnqueueRelease();
frameReleaseCount++;
continue;
}
if (frame.Type == bufferedLeadingFrames.Type)
{
leadingFrameIndex++;
if (leadingFrameIndex == 0 && frame.Type == bufferedLeadingFrames.Type && frame.StartTime - frame.Duration > maxSeekStartTime && maxSeekStartTime > 0M)
{
seekTime -= seekOffsetLength;
frame.EnqueueRelease();
doSeekInStream = true;
lastFailedTimestamp = targetTimestamp;
break;
}
// We are Full minus 1 at this point. We'll stop buffering
if (bufferedLeadingFrames.Count >= bufferedLeadingFrames.Capacity - 1)
doSeekByPullingFrames = false;
bufferedLeadingFrames.Add(frame);
}
else if (frame.Type == bufferedLaggingFrames.Type)
{
// add the lagging frame no matter what
if (bufferedLaggingFrames.IsFull)
bufferedLaggingFrames.RemoveFirst();
bufferedLaggingFrames.Add(frame);
}
// Find out if we have the frame
var seekFrameIndex = bufferedLeadingFrames.IndexOf(renderTime, true);
var minimumFrameCount = (seekFrameIndex - 1) * 2;
// if we have more than enough frames in the buffer or we have reached a full or end condition, stop buffering frames
if (seekFrameIndex > 0)
if (bufferedLeadingFrames.Count >= minimumFrameCount || bufferedLeadingFrames.IsFull || IsAtEndOfStream)
doSeekByPullingFrames = false;
}
// We're already padt the end of the stream. Natural duration was wron for the leading frames cache.
if (IsAtEndOfStream && bufferedLeadingFrames.Count <= 0)
{
doSeekInStream = true;
seekTime -= seekOffsetLength;
maxSeekStartTime = seekTime - allowedThreshold;
seekToLastFrame = true;
}
if (doSeekInStream)
break;
if (doSeekByPullingFrames == false || IsAtEndOfStream)
{
PrimaryFramesCache.Replace(bufferedLeadingFrames);
SecondaryFramesCache.Replace(bufferedLaggingFrames);
if (seekToLastFrame && PrimaryFramesCache.Count > 0)
RealtimeClock.Seek(PrimaryFramesCache.LastFrameTime);
return;
}
}
}
}
finally
{
#if DEBUG
seekStopwatch.Stop();
SeekTimes.Add(seekStopwatch.ElapsedMilliseconds);
InnerLoopCounts.Add(innerLoopCount);
System.Diagnostics.Debug.WriteLine("Seek @ {6:0.000} = Long: {0:00}\t Short: {1:000}\t Short (AVG): {2:0.000}\t Waste Count: {3:000}\t Elapsed: {4}\tElapsed (AVG): {5:0.000}",
outerLoopCount, innerLoopCount, InnerLoopCounts.Average(), frameReleaseCount, seekStopwatch.ElapsedMilliseconds, SeekTimes.Average(), renderTime);
#endif
}
}
