unsafe void handleBitmap(int *binfo, byte *image, int cindex, int frameIndex)
{
try
{
if (m_Stop)
{
return;
}
// compose a managed bitmap from the bitmap parts being delivered
System.Drawing.Imaging.BitmapData srcBmpHeader = new System.Drawing.Imaging.BitmapData();
Marshal.PtrToStructure((IntPtr)binfo, srcBmpHeader);
//pDoc->m_buf[idx].lpbmi[frm_idx]->bmiHeader.biSizeImage
// for some reason stride and width a swapped in position between the 2255 definition and the windows bitmpa definition
int width = srcBmpHeader.Height;
int height = srcBmpHeader.Stride;
Rectangle rect = new Rectangle(0, 0, width, height);
// Bitmap nBmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Bitmap nBmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format8bppIndexed);
System.Drawing.Imaging.BitmapData bmpData = nBmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, nBmp.PixelFormat);
// Get the address of the first line.
// int byteCount = width * height * 3;
int byteCount = width * height;
//byte[] byteArray = new byte[byteCount];
//Marshal.Copy(new IntPtr(image), byteArray, 0, byteCount);
//Marshal.Copy(byteArray, 0, bmpData.Scan0, byteCount);
bool detectedNoVideoPresent = false;
LPROCR_Lib.MemCopyByte((int *)image, bmpData.Scan0, byteCount, ref detectedNoVideoPresent);
// LPROCR_Lib.MemCopyInt((int*)image, bmpData.Scan0, byteCount );
nBmp.UnlockBits(bmpData);
// nBmp.RotateFlip(RotateFlipType.RotateNoneFlipY);
// if there is no video connected, the 2255 device sends frames at 30fps, but they are solid blue-screen.
if (!detectedNoVideoPresent)
{
SetHaveVideo(cindex);
SendImageToConsumer(nBmp, S2255Controller.COMPRESSION_MODE.BITMAP, cindex);
}
else
{
SetDontHaveVideo(cindex);
}
}
catch (Exception ex)
{
m_Log.Log("handleBitmap ex: " + ex.Message, ErrorLog.LOG_TYPE.FATAL);
}
}
// get the individual frames and send them to the DVR/LPR processing chains
/// <summary> buffer callback, COULD BE FROM FOREIGN THREAD. </summary>
int ISampleGrabberCB.BufferCB(double SampleTime, IntPtr pBuffer, int BufferLen)
{
lock (lockSampleGrabberState)
{
if (m_Stop)
{
return(0);
}
m_SampleGrabberCallBackIsDone = false;
IntPtr ipSource = pBuffer;
int[,] ipDest = new int[m_videoWidth, m_videoHeight];
bool invert = true;
if (m_videoWidth != ipDest.GetLength(0) || m_videoHeight != ipDest.GetLength(1))
{
return(0);
}
LPROCR_Wrapper.LPROCR_Lib.extractFromBmpDataToLumArray(ipSource, ipDest, m_stride, m_videoWidth, m_videoHeight, invert);
// compose a new bitmap
Bitmap bmp = new Bitmap(m_videoWidth, m_videoHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
// Lock the bitmap's bits.
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
System.Drawing.Imaging.BitmapData bmpData =
bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite,
bmp.PixelFormat);
// Get the address of the first line.
IntPtr ptr = bmpData.Scan0;
// copy out to the new bitamp
bool dontcare = false;
unsafe
{
LPROCR_Lib.MemCopyByte((int *)ipSource, ptr, BufferLen, ref dontcare);
}
bmp.UnlockBits(bmpData);
bmp.RotateFlip(RotateFlipType.Rotate180FlipX);// what it takes to make it look right, if I had time I would do this in one step in LPROCR_Lib.MemCopyByte
FRAME frame = new FRAME(m_AppData);
frame.Luminance = ipDest;
frame.TimeStamp = m_FileTimeOfCurrentFile.AddSeconds(SampleTime);
frame.Bmp = bmp;
frame.SourceChannel = m_Channel;
frame.SourceName = m_AppData.UserSpecifiedCameraName == null ? "storedjpeg" : m_AppData.UserSpecifiedCameraName;
frame.SetFileName();
OnNewFrame(frame);
m_SampleGrabberCallBackIsDone = true;
return(0);
}
}
