/// <summary>
/// Respond to capture event.
/// This should return as fast as possible.
/// </summary>
public void HandleCapturedFrame(object sender, VideoDataEventArgs e)
{
if (e.Frame != null)
{
TimedImage ti = new TimedImage(e.CaptureTime, width, height);
try {
if (ProcessorQueue != null) // process the source image
{
foreach (var item in ProcessorQueue)
{
item.ProcessFrame(e.Frame, e.CaptureTime);
}
}
} catch { }
lock (WaitingFrames) {
WaitingFrames.Add(ti);
ResampleBuffer(e.Frame, ref ti.Luma, ref ti.Cr, ref ti.Cb, width, height);
}
try {
if (ProcessorQueue != null) // process the YUV buffer
{
foreach (var item in ProcessorQueue)
{
item.ProcessFrame(ti);
}
}
} catch { }
}
}
protected void OnFrameAvailable(object sender, VideoDataEventArgs e)
{
if (FrameAvailable != null)
{
FrameAvailable(sender, e);
}
}
/// <summary> buffer callback, COULD BE FROM FOREIGN THREAD. </summary>
int ISampleGrabberCB.BufferCB(double SampleTime, IntPtr pBuffer, int BufferLen)
{
if (_lastSampleTime < 0.0)
{
_lastSampleTime = SampleTime;
return(0);
}
double frame_duration = SampleTime - _lastSampleTime;
_lastSampleTime = SampleTime;
// this method *REQUIRES* that the frame be properly consumed and dropped before returning from this method
// After this method returns, 'pBuffer' will be freed.
Bitmap frame = null;
// If primary video size <> capture size, we rescale here (to make sure plug-ins work as expected)
if (this.Width != TargetFrameSize.Width || this.Height != TargetFrameSize.Height)
{
frame = RescaleToTargetSize(pBuffer);
}
else
{
frame = new Bitmap(this.Width, this.Height, 3 * this.Width, PixelFormat.Format24bppRgb, pBuffer);
}
VideoDataEventArgs args = new VideoDataEventArgs();
args.Frame = frame;
if (UseAbsoluteTime)
{
args.CaptureTime = (DateTime.Now - _startDay).TotalSeconds - m_TimecodeBase - frame_duration;
}
else
{
args.CaptureTime = SampleTime - m_TimecodeBase;
if (args.CaptureTime < 0.0)
{
return(0);
}
}
OnFrameAvailable(this, args);
frame.Dispose();
return(0);
}
/// <summary>
/// Respond to capture event.
/// This should return as fast as possible.
/// </summary>
public void HandleCapturedFrame(object sender, VideoDataEventArgs e)
{
if (e.Frame != null) {
TimedImage ti = new TimedImage(e.CaptureTime, width, height);
try {
if (ProcessorQueue != null) { // process the source image
foreach (var item in ProcessorQueue) {
item.ProcessFrame(e.Frame, e.CaptureTime);
}
}
} catch { }
lock (WaitingFrames) {
WaitingFrames.Add(ti);
ResampleBuffer(e.Frame, ref ti.Luma, ref ti.Cr, ref ti.Cb, width, height);
}
try {
if (ProcessorQueue != null) { // process the YUV buffer
foreach (var item in ProcessorQueue) {
item.ProcessFrame(ti);
}
}
} catch { }
}
}
protected void OnFrameAvailable(object sender, VideoDataEventArgs e)
{
if (FrameAvailable != null) {
FrameAvailable(sender, e);
}
}
/// <summary> buffer callback, COULD BE FROM FOREIGN THREAD. </summary>
int ISampleGrabberCB.BufferCB(double SampleTime, IntPtr pBuffer, int BufferLen)
{
if (_lastSampleTime < 0.0) {
_lastSampleTime = SampleTime;
return 0;
}
double frame_duration = SampleTime - _lastSampleTime;
_lastSampleTime = SampleTime;
// this method *REQUIRES* that the frame be properly consumed and dropped before returning from this method
// After this method returns, 'pBuffer' will be freed.
Bitmap frame = null;
// If primary video size <> capture size, we rescale here (to make sure plug-ins work as expected)
if (this.Width != TargetFrameSize.Width || this.Height != TargetFrameSize.Height) {
frame = RescaleToTargetSize(pBuffer);
} else {
frame = new Bitmap(this.Width, this.Height, 3 * this.Width, PixelFormat.Format24bppRgb, pBuffer);
}
VideoDataEventArgs args = new VideoDataEventArgs();
args.Frame = frame;
if (UseAbsoluteTime) {
args.CaptureTime = (DateTime.Now - _startDay).TotalSeconds - m_TimecodeBase - frame_duration;
} else {
args.CaptureTime = SampleTime - m_TimecodeBase;
if (args.CaptureTime < 0.0) return 0;
}
OnFrameAvailable(this, args);
frame.Dispose();
return 0;
}
