/// <summary>
/// Free resources
/// </summary>
private void Cleanup()
{
if (hOldObject != IntPtr.Zero && hDCDest != IntPtr.Zero)
{
// restore selection (old handle)
GDI32.SelectObject(hDCDest, hOldObject);
GDI32.DeleteDC(hDCDest);
}
if (hDCDesktop != IntPtr.Zero)
{
User32.ReleaseDC(hWndDesktop, hDCDesktop);
}
if (hDIBSection != IntPtr.Zero)
{
// free up the Bitmap object
GDI32.DeleteObject(hDIBSection);
}
if (disabledDWM)
{
DWM.EnableComposition();
}
if (aviWriter != null)
{
aviWriter.Dispose();
aviWriter = null;
string ffmpegexe = PluginUtils.GetExePath("ffmpeg.exe");
if (ffmpegexe != null)
{
try {
string webMFile = filename.Replace(".avi", ".webm");
string arguments = "-i \"" + filename + "\" -codec:v libvpx -quality good -cpu-used 0 -b:v 1000k -qmin 10 -qmax 42 -maxrate 1000k -bufsize 4000k -threads 4 \"" + webMFile + "\"";
LOG.DebugFormat("Starting {0} with arguments {1}", ffmpegexe, arguments);
ProcessStartInfo processStartInfo = new ProcessStartInfo(ffmpegexe, arguments);
processStartInfo.CreateNoWindow = false;
processStartInfo.RedirectStandardOutput = false;
processStartInfo.UseShellExecute = false;
Process process = Process.Start(processStartInfo);
process.WaitForExit();
if (process.ExitCode == 0)
{
MessageBox.Show("Recording written to " + webMFile);
}
} catch (Exception ex) {
MessageBox.Show("Recording written to " + filename + " couldn't convert due to an error: " + ex.Message);
}
}
else
{
MessageBox.Show("Recording written to " + filename);
}
}
}
/// <summary>
/// Free resources
/// </summary>
private void Cleanup()
{
if (hOldObject != IntPtr.Zero && hDCDest != IntPtr.Zero)
{
// restore selection (old handle)
GDI32.SelectObject(hDCDest, hOldObject);
GDI32.DeleteDC(hDCDest);
}
if (hDCDesktop != IntPtr.Zero)
{
User32.ReleaseDC(hWndDesktop, hDCDesktop);
}
if (hDIBSection != IntPtr.Zero)
{
// free up the Bitmap object
GDI32.DeleteObject(hDIBSection);
}
if (aviWriter != null)
{
aviWriter.Dispose();
aviWriter = null;
}
}
public void Start(int framesPerSecond)
{
string filename;
if (recordingWindow != null)
{
string windowTitle = Regex.Replace(recordingWindow.Text, @"[^\x20\d\w]", "");
if (string.IsNullOrEmpty(windowTitle))
{
windowTitle = "greenshot-recording";
}
filename = Path.Combine(conf.OutputFilePath, windowTitle + ".avi");
}
else
{
filename = Path.Combine(conf.OutputFilePath, "greenshot-recording.avi");
}
if (File.Exists(filename))
{
try {
File.Delete(filename);
} catch {}
}
LOG.InfoFormat("Capturing to {0}", filename);
if (recordingWindow != null)
{
LOG.InfoFormat("Starting recording Window '{0}', {1}", recordingWindow.Text, recordingWindow.ClientRectangle);
recordingSize = recordingWindow.ClientRectangle.Size;
}
else
{
LOG.InfoFormat("Starting recording rectangle {0}", recordingRectangle);
recordingSize = recordingRectangle.Size;
}
if (recordingSize.Width % 8 > 0)
{
LOG.InfoFormat("Correcting width to be factor 8, {0} => {1}", recordingSize.Width, recordingSize.Width + (8 - (recordingSize.Width % 8)));
recordingSize = new Size(recordingSize.Width + (8 - (recordingSize.Width % 8)), recordingSize.Height);
}
if (recordingSize.Height % 8 > 0)
{
LOG.InfoFormat("Correcting Height to be factor 8, {0} => {1}", recordingSize.Height, recordingSize.Height + (8 - (recordingSize.Height % 8)));
recordingSize = new Size(recordingSize.Width, recordingSize.Height + (8 - (recordingSize.Height % 8)));
}
this.framesPerSecond = framesPerSecond;
// "P/Invoke" Solution for capturing the screen
hWndDesktop = User32.GetDesktopWindow();
// get te hDC of the target window
hDCDesktop = User32.GetWindowDC(hWndDesktop);
// Make sure the last error is set to 0
Win32.SetLastError(0);
// create a device context we can copy to
hDCDest = GDI32.CreateCompatibleDC(hDCDesktop);
// Check if the device context is there, if not throw an error with as much info as possible!
if (hDCDest == IntPtr.Zero)
{
// Get Exception before the error is lost
Exception exceptionToThrow = CreateCaptureException("CreateCompatibleDC", recordingSize);
// Cleanup
User32.ReleaseDC(hWndDesktop, hDCDesktop);
// throw exception
throw exceptionToThrow;
}
// Create BitmapInfoHeader for CreateDIBSection
BitmapInfoHeader bitmapInfoHeader = new BitmapInfoHeader(recordingSize.Width, recordingSize.Height, 32);
// Make sure the last error is set to 0
Win32.SetLastError(0);
// create a bitmap we can copy it to, using GetDeviceCaps to get the width/height
hDIBSection = GDI32.CreateDIBSection(hDCDesktop, ref bitmapInfoHeader, BitmapInfoHeader.DIB_RGB_COLORS, out bits0, IntPtr.Zero, 0);
if (hDIBSection == IntPtr.Zero)
{
// Get Exception before the error is lost
Exception exceptionToThrow = CreateCaptureException("CreateDIBSection", recordingSize);
exceptionToThrow.Data.Add("hdcDest", hDCDest.ToInt32());
exceptionToThrow.Data.Add("hdcSrc", hDCDesktop.ToInt32());
// clean up
GDI32.DeleteDC(hDCDest);
User32.ReleaseDC(hWndDesktop, hDCDesktop);
// Throw so people can report the problem
throw exceptionToThrow;
}
// Create a GDI Bitmap so we can use GDI and GDI+ operations on the same memory
GDIBitmap = new Bitmap(recordingSize.Width, recordingSize.Height, 32, PixelFormat.Format32bppArgb, bits0);
// select the bitmap object and store the old handle
hOldObject = GDI32.SelectObject(hDCDest, hDIBSection);
stop = false;
aviWriter = new AVIWriter();
// Comment the following 2 lines to make the user select it's own codec
//aviWriter.Codec = "msvc";
//aviWriter.Quality = 99;
aviWriter.FrameRate = framesPerSecond;
aviWriter.Open(filename, recordingSize.Width, recordingSize.Height);
// Start update check in the background
backgroundTask = new Thread(new ThreadStart(CaptureFrame));
backgroundTask.IsBackground = true;
backgroundTask.Start();
}