public void Open()
{
if (opened) {
throw new InvalidOperationException();
}
if (tracker == null) {
throw new InvalidOperationException("Tracking is not specified.");
}
// Get pixel format of primary screen
PixelFormat pixelFormat;
int bpp = GetPrimaryScreenBitDepth();
switch (bpp) {
case bpp16:
pixelFormat = PixelFormat.Format16bppRgb555;
break;
case bpp24:
case bpp32:
pixelFormat = PixelFormat.Format24bppRgb;
break;
default:
throw new NotSupportedException("PixelFormat is not supported.");
}
// Populate display element list
List<IDisplayElement> displayElementList = new List<IDisplayElement>();
displayElementList.Add(this.screenshot);
if (displayWatermark) {
displayElementList.Add(this.waterMark);
}
if (this.recordCursor) {
displayElementList.Add(this.mouseCursor);
}
// Calc bitmap properties
Rectangle bounds = this.tracker.Bounds;
Size size = bounds.Size;
int bytesPerPixel = Bitmap.GetPixelFormatSize(pixelFormat) / 8;
int stride = (size.Width * bytesPerPixel);
int nUnalignedBytes = stride % nAlignBytes;
if (nUnalignedBytes != 0) {
stride = stride + nAlignBytes - nUnalignedBytes;
}
int nBitmapBytes = stride * size.Height;
int nExtraBytes = 4; // NOTE: added + 4 for acc. violation problem with encoding 24bit in XVID codec (?!)
// Allocate memory for bitmap bits
this.pBitmapBits = Marshal.AllocHGlobal(nBitmapBytes + nExtraBytes);
try {
// Create bitmap
this.bitmap = new Bitmap(size.Width, size.Height, stride, pixelFormat, this.pBitmapBits);
this.bitmapBytes = nBitmapBytes;
// Open displat elements
foreach (IDisplayElement displayElement in displayElementList) {
displayElement.Open(this.bitmap);
}
// Set fields
this.displayElements = displayElementList.ToArray();
this.format = new DisplayFormat(size, pixelFormat);
this.opened = true;
}
finally {
if (!this.opened) {
this.Close();
}
}
}
private void SetupVideo(DisplayFormat videoFormat, VideoCompressor compressor, int fps)
{
int colorDepth = Bitmap.GetPixelFormatSize(videoFormat.PixelFormat);
int width = videoFormat.Width;
int height = videoFormat.Height;
// Calculate pitch
int bytesPerPixel = colorDepth / 8;
int pitch = width * bytesPerPixel;
int pitch_factor = 4;
if (pitch % pitch_factor != 0) {
pitch = pitch + pitch_factor - pitch % pitch_factor;
}
// Create AVI Stream
Avi32Interop.AVISTREAMINFO asf = new Avi32Interop.AVISTREAMINFO();
asf.dwRate = fps;
asf.dwSuggestedBufferSize = pitch * height * bytesPerPixel;
asf.dwScale = 1;
asf.fccType = Avi32Interop.streamtypeVIDEO;
asf.szName = null;
asf.rcFrame = new Avi32Interop.RECT(0, 0, width, height);
int hr = Avi32Interop.AVIFileCreateStream(this.pAviFile, out this.pVideoStream, ref asf);
if (hr != 0) {
throw new AviException("AVIFileCreateStream", hr);
}
// Set stream format
Avi32Interop.BITMAPINFOHEADER bih = new Avi32Interop.BITMAPINFOHEADER();
bih.biBitCount = (ushort)colorDepth;
bih.biCompression = 0; // BI_RGB
bih.biHeight = videoFormat.Height;
bih.biPlanes = 1;
bih.biSize = (uint)Marshal.SizeOf(bih);
bih.biSizeImage = (uint)(pitch * height * (colorDepth / 8));
bih.biWidth = videoFormat.Width;
if (compressor != null && !compressor.Equals(VideoCompressor.None)) {
// Setup compressor
this.SetupVideoCompressor(compressor);
hr = Avi32Interop.AVIStreamSetFormat(this.pAviCompressedStream, 0, ref bih, Marshal.SizeOf(bih));
}
else {
hr = Avi32Interop.AVIStreamSetFormat(this.pVideoStream, 0, ref bih, Marshal.SizeOf(bih));
}
if (hr != 0) {
throw new AviException("AVIStreamSetFormat", hr);
}
}
public void Open()
{
if (opened)
{
throw new InvalidOperationException();
}
if (tracker == null)
{
throw new InvalidOperationException("Tracking is not specified.");
}
// Get pixel format of primary screen
PixelFormat pixelFormat;
int bpp = GetPrimaryScreenBitDepth();
switch (bpp)
{
case bpp16:
pixelFormat = PixelFormat.Format16bppRgb555;
break;
case bpp24:
case bpp32:
pixelFormat = PixelFormat.Format24bppRgb;
break;
default:
throw new NotSupportedException("PixelFormat is not supported.");
}
// Populate display element list
List <IDisplayElement> displayElementList = new List <IDisplayElement>();
displayElementList.Add(this.screenshot);
if (displayWatermark)
{
displayElementList.Add(this.waterMark);
}
if (this.recordCursor)
{
displayElementList.Add(this.mouseCursor);
}
// Calc bitmap properties
Rectangle bounds = this.tracker.Bounds;
Size size = bounds.Size;
int bytesPerPixel = Bitmap.GetPixelFormatSize(pixelFormat) / 8;
int stride = (size.Width * bytesPerPixel);
int nUnalignedBytes = stride % nAlignBytes;
if (nUnalignedBytes != 0)
{
stride = stride + nAlignBytes - nUnalignedBytes;
}
int nBitmapBytes = stride * size.Height;
int nExtraBytes = 4; // NOTE: added + 4 for acc. violation problem with encoding 24bit in XVID codec (?!)
// Allocate memory for bitmap bits
this.pBitmapBits = Marshal.AllocHGlobal(nBitmapBytes + nExtraBytes);
try {
// Create bitmap
this.bitmap = new Bitmap(size.Width, size.Height, stride, pixelFormat, this.pBitmapBits);
this.bitmapBytes = nBitmapBytes;
// Open displat elements
foreach (IDisplayElement displayElement in displayElementList)
{
displayElement.Open(this.bitmap);
}
// Set fields
this.displayElements = displayElementList.ToArray();
this.format = new DisplayFormat(size, pixelFormat);
this.opened = true;
}
finally {
if (!this.opened)
{
this.Close();
}
}
}
public void Open(string fileName, DisplayFormat videoFormat, int fps, VideoCompressor compressor,
SoundFormat audioFormat, AcmEncoder audioEncoder)
{
if (this.opened) {
throw new InvalidOperationException();
}
if (string.IsNullOrEmpty(fileName)) {
throw new ArgumentNullException("fileName");
}
this.video = videoFormat != null;
this.audio = audioFormat != null;
if (!this.audio && !this.video) {
// There is nothing to do!
throw new InvalidOperationException();
}
// Open AVI File
int hr = Avi32Interop.AVIFileOpen(out this.pAviFile, fileName, Avi32Interop.OF_CREATE, IntPtr.Zero);
if (hr != 0) {
throw new AviException("AVIFileOpen", hr);
}
try {
if (this.video) {
this.SetupVideo(videoFormat, compressor, fps);
}
if (this.audio) {
this.SetupAudio(audioFormat, audioEncoder);
}
this.opened = true;
}
finally {
if (!this.opened) {
this.Close();
}
}
}
