private void timerPhoneWebCam_Tick(object sender,EventArgs e) {
try {
if(vidCapt==null) {
if(intPtrVideo != IntPtr.Zero) {// Release any previous buffer
Marshal.FreeCoTaskMem(intPtrVideo);
intPtrVideo=IntPtr.Zero;
}
int deviceCount=VideoCapture.GetDeviceCount();
if(deviceCount>0) {
try {
vidCapt=new VideoCapture(0,640,480,24,pictBoxVideo);
//image capture will now continue below if successful
}
catch {
Phones.SetWebCamImage(IpAddressCur,null,Environment.MachineName);
return;//haven't actually seen this happen since we started properly disposing of vidCapt
}
}
Phones.SetWebCamImage(IpAddressCur,null,Environment.MachineName);
}
if(vidCapt!=null) {
if(intPtrVideo != IntPtr.Zero) {// Release any previous buffer
Marshal.FreeCoTaskMem(intPtrVideo);
intPtrVideo=IntPtr.Zero;
}
Bitmap bitmapSmall=null;
try {
intPtrVideo = vidCapt.Click();//will fail if camera unplugged
Bitmap bitmap= new Bitmap(vidCapt.Width,vidCapt.Height,vidCapt.Stride,PixelFormat.Format24bppRgb,intPtrVideo);
bitmap.RotateFlip(RotateFlipType.RotateNoneFlipY);// If the image is upsidedown
int w=50;
int h=(int)(((float)w)/640f*480f);
bitmapSmall = new Bitmap(w,h);
using(Graphics g = Graphics.FromImage(bitmapSmall)) {
g.DrawImage(bitmap,new Rectangle(0,0,bitmapSmall.Width,bitmapSmall.Height));
}
bitmap.Dispose();
bitmap=null;
}
catch {
//bitmapSmall will remain null
vidCapt.Dispose();
vidCapt=null;//To prevent the above slow try/catch from happening again and again.
}
finally {
//Marshal.FreeCoTaskMem(intPtrVideo);
}
if(IpAddressCur!="") {//found entry in phone table matching this machine ip.
Phones.SetWebCamImage(IpAddressCur,bitmapSmall,Environment.MachineName);
}
if(bitmapSmall!=null) {
bitmapSmall.Dispose();
bitmapSmall=null;
}
}
}
catch { }//Prevents UE from losing MySQL service
}
private void timerPhoneWebCam_Tick(object sender, EventArgs e)
{
if (vidCapt == null)
{
if (intPtrVideo != IntPtr.Zero) // Release any previous buffer
{
Marshal.FreeCoTaskMem(intPtrVideo);
intPtrVideo = IntPtr.Zero;
}
int deviceCount = VideoCapture.GetDeviceCount();
if (deviceCount > 0)
{
try {
vidCapt = new VideoCapture(0, 640, 480, 24, pictBoxVideo);
//image capture will now continue below if successful
}
catch {
Phones.SetWebCamImage(IpAddress192, null, Environment.MachineName);
return; //haven't actually seen this happen since we started properly disposing of vidCapt
}
}
Phones.SetWebCamImage(IpAddress192, null, Environment.MachineName);
}
if (vidCapt != null)
{
if (intPtrVideo != IntPtr.Zero) // Release any previous buffer
{
Marshal.FreeCoTaskMem(intPtrVideo);
intPtrVideo = IntPtr.Zero;
}
Bitmap bitmapSmall = null;
try {
intPtrVideo = vidCapt.Click(); //will fail if camera unplugged
Bitmap bitmap = new Bitmap(vidCapt.Width, vidCapt.Height, vidCapt.Stride, PixelFormat.Format24bppRgb, intPtrVideo);
bitmap.RotateFlip(RotateFlipType.RotateNoneFlipY); // If the image is upsidedown
int w = 50;
int h = (int)(((float)w) / 640f * 480f);
bitmapSmall = new Bitmap(w, h);
using (Graphics g = Graphics.FromImage(bitmapSmall)) {
g.DrawImage(bitmap, new Rectangle(0, 0, bitmapSmall.Width, bitmapSmall.Height));
}
bitmap.Dispose();
bitmap = null;
}
catch {
//bitmapSmall will remain null
vidCapt.Dispose();
vidCapt = null; //To prevent the above slow try/catch from happening again and again.
}
finally {
//Marshal.FreeCoTaskMem(intPtrVideo);
}
if (IpAddress192 != "") //found entry in phone table matching this machine ip.
{
Phones.SetWebCamImage(IpAddress192, bitmapSmall, Environment.MachineName);
}
if (bitmapSmall != null)
{
bitmapSmall.Dispose();
bitmapSmall = null;
}
}
}