/// <summary>
/// BufferCB callback
/// </summary>
/// <remarks>COULD BE EXECUTED FROM FOREIGN THREAD.</remarks>
int ISampleGrabberCB.BufferCB(double SampleTime, IntPtr pBuffer, int BufferLen)
{
try
{
// Note that we depend on only being called once per call to Click. Otherwise
// a second call can overwrite the previous image.
if (BufferLen == Math.Abs(m_videoBitCount / 8 * m_videoWidth) * m_videoHeight)
{
}
if (m_bWantOneFrame)
{
m_bWantOneFrame = false;
if (m_ipBuffer != IntPtr.Zero)
{
}
// Save the buffer
NativeMethodes.CopyMemory(m_ipBuffer, pBuffer, BufferLen);
// Picture is ready.
m_PictureReady.Set();
}
}
catch { }
return(0);
}
int ISampleGrabberCB.BufferCB(double SampleTime, IntPtr pBuffer, int BufferLen)
{
if (this.m_bWantOneFrame)
{
this.m_bWantOneFrame = false;
NativeMethodes.CopyMemory(this.m_ipBuffer, pBuffer, BufferLen);
this.m_PictureReady.Set();
}
return(0);
}
/// <summary>
/// BufferCB callback
/// </summary>
/// <remarks>COULD BE EXECUTED FROM FOREIGN THREAD.</remarks>
int ISampleGrabberCB.BufferCB(double SampleTime, IntPtr pBuffer, int BufferLen)
{
// Note that we depend on only being called once per call to Click. Otherwise
// a second call can overwrite the previous image.
Debug.Assert(BufferLen == Math.Abs(m_videoBitCount / 8 * m_videoWidth) * m_videoHeight, "Incorrect buffer length");
if (m_bWantOneFrame)
{
m_bWantOneFrame = false;
Debug.Assert(m_ipBuffer != IntPtr.Zero, "Unitialized buffer");
// Save the buffer
NativeMethodes.CopyMemory(m_ipBuffer, pBuffer, BufferLen);
// Picture is ready.
m_PictureReady.Set();
}
return(0);
}
