public SaveResult Prepare(string filename, double interval)
{
if (imageDescriptor == null)
{
throw new NotSupportedException("ImageDescriptor must be set before prepare.");
}
this.filename = filename;
if (writer != null)
{
writer.Dispose();
}
writer = new MJPEGWriter();
VideoInfo info = new VideoInfo();
info.OriginalSize = new Size(imageDescriptor.Width, imageDescriptor.Height);
string formatString = FilenameHelper.GetFormatStringCapture();
// If the capture happens at more than 100fps, set the video itself to be at 30fps.
// This avoids erratic playback because the player can't cope with the framerate, drawback: prevents review in real time.
// FIXME: fix the player so that it can playback high speed video in real time.
if (interval < 10)
{
interval = 1000.0 / 30;
}
SaveResult result = writer.OpenSavingContext(filename, info, formatString, interval);
return(result);
}
protected override void AfterDeactivate()
{
writer.CloseSavingContext(true);
writer.Dispose();
writer = null;
base.AfterDeactivate();
}
public SaveResult StartRecord(string filename, double interval)
{
//-----------------------
// Runs on the UI thread.
//-----------------------
if (imageDescriptor == null)
{
throw new NotSupportedException("ImageDescriptor must be set before prepare.");
}
this.filename = filename;
if (writer != null)
{
writer.Dispose();
}
writer = new MJPEGWriter();
VideoInfo info = new VideoInfo();
info.OriginalSize = new Size(imageDescriptor.Width, imageDescriptor.Height);
bool uncompressed = PreferencesManager.CapturePreferences.SaveUncompressedVideo && imageDescriptor.Format != ImageFormat.JPEG;
string formatString = FilenameHelper.GetFormatStringCapture(uncompressed);
// If the capture happens too fast or too slow for a regular player, set the video metadata to a more sensible framerate.
// This avoids erratic playback because the player can't cope with the framerate, drawback: prevents review in real time.
double hrft = PreferencesManager.CapturePreferences.HighspeedRecordingFramerateThreshold;
double srft = PreferencesManager.CapturePreferences.SlowspeedRecordingFramerateThreshold;
double fps = 1000.0 / interval;
double fileInterval = interval;
if (fps >= hrft)
{
double hrfo = PreferencesManager.CapturePreferences.HighspeedRecordingFramerateOutput;
fileInterval = 1000.0 / hrfo;
log.DebugFormat("High speed recording detected, {0:0.###} fps. Forcing output framerate to {1:0.###} fps.", fps, hrfo);
}
else if (fps <= srft)
{
double srfo = PreferencesManager.CapturePreferences.SlowspeedRecordingFramerateOutput;
fileInterval = 1000.0 / srfo;
log.DebugFormat("Slow speed recording detected, {0:0.###} fps. Forcing output framerate to {1:0.###} fps.", fps, srfo);
}
log.DebugFormat("Frame budget for writer [{0}]: {1:0.000} ms.", shortId, interval);
SaveResult result = writer.OpenSavingContext(filename, info, formatString, imageDescriptor.Format, uncompressed, interval, fileInterval);
recording = true;
return(result);
}
protected override void AfterDeactivate()
{
if (recording)
{
writer.CloseSavingContext(true);
writer.Dispose();
writer = null;
recording = false;
}
base.AfterDeactivate();
}
private void DoStopRecord()
{
//---------------------------------------
// Must be called on the consumer thread.
//---------------------------------------
stopRecordAsked = false;
if (!recording)
{
return;
}
writer.CloseSavingContext(true);
writer.Dispose();
writer = null;
recording = false;
}
public SaveResult StartRecord(string filename, double interval, ImageRotation rotation)
{
//-----------------------
// Runs on the UI thread.
//-----------------------
if (imageDescriptor == null)
{
throw new NotSupportedException("ImageDescriptor must be set before prepare.");
}
this.filename = filename;
if (writer != null)
{
writer.Dispose();
}
writer = new MJPEGWriter();
VideoInfo info = new VideoInfo();
info.OriginalSize = new Size(imageDescriptor.Width, imageDescriptor.Height);
bool uncompressed = PreferencesManager.CapturePreferences.SaveUncompressedVideo && imageDescriptor.Format != ImageFormat.JPEG;
string formatString = FilenameHelper.GetFormatStringCapture(uncompressed);
double fileInterval = CalibrationHelper.ComputeFileFrameInterval(interval);
log.DebugFormat("Frame budget for writer [{0}]: {1:0.000} ms.", shortId, interval);
SaveResult result = writer.OpenSavingContext(filename, info, formatString, imageDescriptor.Format, uncompressed, interval, fileInterval, rotation);
recording = true;
return(result);
}
