/// <summary>
/// Is Invoked by playTimer to render the next frame for the video
/// It will trigger the playThread to render the next frame.
/// This solution is more complex than a simple Thread.Sleep, but
/// has the advantage that the playback will be smoother if the frames
/// take long to render.
/// </summary>
private void playNextFrame(object state)
{
try
{
//playback speed is correct, but frames may be dropped if computer is too slow
if (EnsureCorrectPlaybackSpeed)
{
if (!OffsetPosition(1, false))
{
Stop();
}
else
{
InvokeOnPositionChanged();
}
UpdateVideo();
}
//no frames will be dropped, but the playback speed might be slower than realtime
else
{
nextFrameEvent.Set();
}
//Console.WriteLine("Frame {0} requested", Position);
}
catch (Exception e)
{
MeGUI.core.util.LogItem _oLog = MainForm.Instance.Log.Info("Error");
_oLog.LogValue("playNextFrame", e, MeGUI.core.util.ImageType.Error);
}
}
/// <summary>
/// saves the currently configured matrix to a file
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void saveMatrixButton_Click(object sender, System.EventArgs e)
{
if (this.saveFileDialog.ShowDialog() == DialogResult.OK)
{
StreamWriter sw = null;
try
{
sb = new StringBuilder();
sb.Append("#" + Path.GetFileNameWithoutExtension(saveFileDialog.FileName) + "\r\n\r\nINTRA4X4_LUMA =\r\n");
sb.Append(convertMatrixToString(this.I4x4L));
sb.Append("\r\n\r\nINTRA4X4_CHROMAU =\r\n");
sb.Append(convertMatrixToString(this.I4x4CU));
sb.Append("\r\n\r\nINTRA4X4_CHROMAV =\r\n");
sb.Append(convertMatrixToString(this.I4x4CY));
sb.Append("\r\n\r\nINTER4X4_LUMA =\r\n");
sb.Append(convertMatrixToString(this.P4x4L));
sb.Append("\r\n\r\nINTER4X4_CHROMAU =\r\n");
sb.Append(convertMatrixToString(this.P4x4CU));
sb.Append("\r\n\r\nINTER4X4_CHROMAV =\r\n");
sb.Append(convertMatrixToString(this.P4x4CY));
sb.Append("\r\n\r\nINTRA8X8_LUMA =\r\n");
sb.Append(convertMatrixToString(this.I8x8));
sb.Append("\r\n\r\nINTER8X8_LUMA =\r\n");
sb.Append(convertMatrixToString(this.P8x8));
sw = new StreamWriter(saveFileDialog.FileName, false);
sw.Write(sb.ToString());
}
catch (Exception f)
{
MeGUI.core.util.LogItem _oLog = MainForm.Instance.Log.Info("Error");
_oLog.LogValue("Error", f, MeGUI.core.util.ImageType.Error);
}
finally
{
if (sw != null)
{
try
{
sw.Close();
}
catch (Exception f)
{
MeGUI.core.util.LogItem _oLog = MainForm.Instance.Log.Info("Error");
_oLog.LogValue("Error", f, MeGUI.core.util.ImageType.Error);
}
}
}
}
}
/// <summary>
/// converts a comma separated
/// </summary>
/// <param name="matrix"></param>
/// <param name="size"></param>
/// <returns></returns>
private int[,] convertStringToMatrix(string matrix, int size)
{
int[,] retval = new int[size, size];
char[] splitChars = { ',' };
matrix = matrix.Replace("\r", ""); // removes newlines
matrix = matrix.Replace("\n", "");
matrix = matrix.Replace("\t", ""); // remove tabs
string[] quantizers = matrix.Split(splitChars);
int column = 0;
int line = 0;
foreach (string quantizer in quantizers)
{
int val = 16;
try
{
val = Int32.Parse(quantizer);
}
catch (Exception e)
{
MeGUI.core.util.LogItem _oLog = MainForm.Instance.Log.Info("Error");
_oLog.LogValue("convertStringToMatrix: " + matrix, e, MeGUI.core.util.ImageType.Error);
MessageBox.Show("Invalid quantizer detected: " + quantizer + "\nUsing 16 instead", "Invalid quantizer", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
retval[line, column] = val;
if (column == size - 1)
{
line++;
column = 0;
}
else
{
column++;
}
}
return(retval);
}
/// <summary>
/// loads a matrix from file
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void loadMatrixButton_Click(object sender, System.EventArgs e)
{
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
StreamReader sr = null;
string matrix = "", line = null;
try
{
sr = new StreamReader(openFileDialog.FileName);
while ((line = sr.ReadLine()) != null)
{
if (line.IndexOf("4X4") != -1) // 4x3 matrix
{
matrix = sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
int[,] matrixRead = convertStringToMatrix(matrix, 4);
if (line.IndexOf("INTRA4X4_LUMA") != -1) // I4x4L matrix
{
this.I4x4L = matrixRead;
}
else if (line.IndexOf("INTRA4X4_CHROMAU") != -1)
{
this.I4x4CU = matrixRead;
}
else if (line.IndexOf("INTRA4X4_CHROMAV") != -1)
{
this.I4x4CY = matrixRead;
}
else if (line.IndexOf("INTER4X4_LUMA") != -1)
{
this.P4x4L = matrixRead;
}
else if (line.IndexOf("INTER4X4_CHROMAU") != -1)
{
this.P4x4CU = matrixRead;
}
else if (line.IndexOf("INTER4X4_CHROMAV") != -1)
{
this.P4x4CY = matrixRead;
}
}
if (line.IndexOf("8X8") != -1) // 8x8 matrix
{
matrix = sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
matrix += sr.ReadLine();
int[,] matrixRead = convertStringToMatrix(matrix, 8);
if (line.IndexOf("INTRA8X8_LUMA") != -1)
{
this.I8x8 = matrixRead;
}
else if (line.IndexOf("INTER8X8_LUMA") != -1)
{
this.P8x8 = matrixRead;
}
}
}
this.loadMatrix(getCurrentConfig());
this.predefinedMatrix.SelectedIndex = 3;
}
catch (Exception f)
{
MeGUI.core.util.LogItem _oLog = MainForm.Instance.Log.Info("Error");
_oLog.LogValue("Error", f, MeGUI.core.util.ImageType.Error);
}
finally
{
if (sr != null)
{
try
{
sr.Close();
}
catch (Exception f)
{
MeGUI.core.util.LogItem _oLog = MainForm.Instance.Log.Info("Error");
_oLog.LogValue("Error", f, MeGUI.core.util.ImageType.Error);
}
}
}
}
}
private void renderThreadLoop()
{
int framesPlayed = 0;
DateTime start = DateTime.Now;
do
{
DateTime end = DateTime.Now;
TimeSpan renderTime = end - start;
//do not update current framerate more often than 200ms
if (renderTime.Milliseconds > 200 && framesPlayed > 0)
{
//average results
actualFramerate = 0.9d * actualFramerate + 0.1d * (TimeSpan.TicksPerSecond / (double)renderTime.Ticks) * framesPlayed;
start = end;
framesPlayed = 0;
}
if (WaitHandle.WaitAny(new WaitHandle[] { nextFrameEvent, renderEvent }) == 0)
{
if (!OffsetPosition(1, false))
{
Stop();
}
else
{
InvokeOnPositionChanged();
}
}
Bitmap finalBitmap;
int pos = position;
try
{
using (Bitmap b = getFrame(pos))
{
if (b == null)
{
continue;
}
//if (cropMargin != Padding.Empty) // only crop when necessary
// cropImage(b);
finalBitmap = resizeBitmap(b, videoPreview.Width, videoPreview.Height);
}
}
catch (Exception ex)
{
MessageBox.Show("Could not read AVS frame.", "Video Player Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
MeGUI.core.util.LogItem _oLog = MainForm.Instance.AVSScriptCreatorLog;
if (_oLog == null)
{
_oLog = MainForm.Instance.Log.Info("AVS Script Creator");
MainForm.Instance.AVSScriptCreatorLog = _oLog;
}
_oLog.LogValue("Could not read frame", ex.Message, MeGUI.core.util.ImageType.Warning, true);
break;
}
using (videoPreview.Image) // get rid of previous bitmap
{
//do the actual rendering on GUI thread
Invoke((SimpleDelegate)(delegate { videoPreview.Image = finalBitmap; }));
}
//Console.WriteLine("Frame {0} updated", pos);
//needed for fps display
framesPlayed++;
} while (!IsDisposed);
}