/// <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>
/// 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();
}