public IVideoReader GetVideoReader()
{
if (!HasVideo || !CanReadVideo)
{
throw new Exception("Can't read the video stream");
}
if (videoSourceFile == null || videoReader == null)
{
lock (this)
{
if (videoSourceFile == null)
{
videoSourceFile = AvsFile.ParseScript(ScriptServer.GetInputLine(file,
PossibleSources.directShow, false, false, false, FPS));
videoReader = null;
}
if (videoReader == null)
{
videoReader = videoSourceFile.GetVideoReader();
}
}
}
return(videoReader);
}
/// <summary>
/// loads the video, sets up the proper window size and enables / disables the GUI buttons depending on the
/// preview type set
/// </summary>
/// <param name="path">path of the video file to be loaded</param>
/// <param name="type">type of window</param>
/// <param name="inlineAvs">true if path contain not filename but avsynth script to be parsed</param>
/// <param name="startFrame">Select a specific frame to start off with or -1 for middle of video</param>
/// <returns>true if the video could be opened, false if not</returns>
public bool loadVideo(MainForm mainForm, string path, PREVIEWTYPE type, bool hasAR, bool inlineAvs, int startFrame, bool originalSize)
{
videoPreview.UnloadVideo();
bInlineAVS = inlineAvs;
strFileName = path;
bOriginalSize = originalSize;
lock (this)
{
if (file != null)
{
file.Dispose();
}
}
try
{
if (inlineAvs)
{
file = AvsFile.ParseScript(path, true);
btnReloadVideo.Enabled = false;
}
else
{
file = mainForm.MediaFileFactory.Open(path);
if (file == null)
{
throw new Exception("The video stream cannot be opened");
}
btnReloadVideo.Enabled = true;
}
reader = file.GetVideoReader();
}
catch (AviSynthException e)
{
MessageBox.Show("AviSynth script error:\r\n" + e.Message, "AviSynth error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
catch (ArgumentException e)
{
MessageBox.Show("AviSynth script error:\r\n" + e.Message, "AviSynth error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return(false);
}
catch (Exception e)
{
MessageBox.Show("The file " + path + " cannot be opened.\r\n"
+ "Error message: " + e.Message,
"Cannot open video input", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
if (reader != null && reader.FrameCount > 0)
{
this.positionSlider.Minimum = 0;
this.positionSlider.Maximum = reader.FrameCount - 1;
this.positionSlider.TickFrequency = this.positionSlider.Maximum / 20;
this.viewerType = type;
this.hasAR = hasAR;
zoomMaxWidth = 0;
SetMaxZoomWidth();
doInitialAdjustment();
int iStart = 0;
if (startFrame >= 0)
{
iStart = startFrame;
}
else
{
iStart = reader.FrameCount / 2;
}
videoPreview.LoadVideo(reader, file.VideoInfo.FPS, iStart);
setTitleText();
return(true);
}
return(false);
}