/// <summary>Extract and display the frames</summary>
private void Run()
{
videoStream.GetFrameOpen();
for (currentFrameIndex = 0; (currentFrameIndex < videoStream.CountFrames) && isRunning; currentFrameIndex++)
{
//show frame
currentBitmap = videoStream.GetBitmap(currentFrameIndex);
picDisplay.Invoke(new SimpleDelegate(SetDisplayPicture));
picDisplay.Invoke(new SimpleDelegate(picDisplay.Refresh));
//show position
if (ctlFrameIndexFeedback != null)
{
ctlFrameIndexFeedback.Invoke(new SimpleDelegate(SetLabelText));
}
//wait for the next frame
Thread.Sleep(millisecondsPerFrame);
}
videoStream.GetFrameClose();
isRunning = false;
if (Stopped != null)
{
Stopped(this, EventArgs.Empty);
}
}
/// <summary>Copy a piece of video and wave sound int a new file</summary>
/// <param name="newFileName">File name</param>
/// <param name="startAtSecond">Start copying at second x</param>
/// <param name="stopAtSecond">Stop copying at second y</param>
/// <returns>AviManager for the new video</returns>
public AviManager CopyTo(String newFileName, float startAtSecond, float stopAtSecond)
{
AviManager newFile = new AviManager(newFileName, false);
try {
//copy video stream
VideoStream videoStream = GetVideoStream();
int startFrameIndex = (int)(videoStream.FrameRate * startAtSecond);
int stopFrameIndex = (int)(videoStream.FrameRate * stopAtSecond);
videoStream.GetFrameOpen();
Bitmap bmp = videoStream.GetBitmap(startFrameIndex);
VideoStream newStream = newFile.AddVideoStream(false, videoStream.FrameRate, bmp);
for (int n = startFrameIndex + 1; n <= stopFrameIndex; n++)
{
bmp = videoStream.GetBitmap(n);
newStream.AddFrame(bmp);
}
videoStream.GetFrameClose();
//copy audio stream
AudioStream waveStream = GetWaveStream();
Avi.AVISTREAMINFO streamInfo = new Avi.AVISTREAMINFO();
Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT();
int streamLength = 0;
IntPtr ptrRawData = waveStream.GetStreamData(
ref streamInfo,
ref streamFormat,
ref streamLength);
int startByteIndex = (int)(startAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8);
int stopByteIndex = (int)(stopAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8);
IntPtr ptrWavePart = new IntPtr(ptrRawData.ToInt32() + startByteIndex);
byte[] rawData = new byte[stopByteIndex - startByteIndex];
Marshal.Copy(ptrWavePart, rawData, 0, rawData.Length);
Marshal.FreeHGlobal(ptrRawData);
streamInfo.dwLength = rawData.Length;
streamInfo.dwStart = 0;
IntPtr unmanagedRawData = Marshal.AllocHGlobal(rawData.Length);
Marshal.Copy(rawData, 0, unmanagedRawData, rawData.Length);
newFile.AddAudioStream(unmanagedRawData, streamInfo, streamFormat, rawData.Length);
Marshal.FreeHGlobal(unmanagedRawData);
} catch (Exception ex) {
newFile.Close();
throw ex;
}
return(newFile);
}
public VideoFrames(string fileLocation)
{
if (fileLocation == null)
{
_mode = Mode.None;
return;
}
string lower = fileLocation.ToLower();
fileloc = fileLocation;
if (lower.EndsWith(".avi"))
{
_aviManager = new AviManager(fileLocation, true);
_aviStream = _aviManager.GetVideoStream();
_aviStream.GetFrameOpen();
_mode = Mode.Video;
}
else if (lower.EndsWith(".png"))
{
_singleFrame = new System.Drawing.Bitmap(fileLocation);
_mode = Mode.SingleFrame;
}
else
{
_mode = Mode.None;
}
}
public void Open(string file)
{
lock (this)
{
_aviManager = new AviManager(file, true);
_videoStream = _aviManager.GetVideoStream();
_videoStream.GetFrameOpen();
_currentFrame = 0;
_frameBuffer.Clear();
}
_threadFillBuffer = new Thread(this.FillBuffer) {Priority = ThreadPriority.Highest};
_threadFillBuffer.Start();
}