// Sample Data creates a time stamp, waveform and image. The time stamp
// and waveform data are bundled together and flattened to a string.
// This data is saved with the image in an AVI so when the AVI image is
// read out later, the same data it was written with can also be
// retrieved.
private void SampleData(AviInputSession sourceSession, AviOutputSession destSession, VisionImage frame, uint frameIndex)
{
// Get and display time
string timestamp = DateTime.Now.ToString();
form2.CurTime.Text = timestamp;
// Read the frame
sourceSession.ReadFrame(frame, frameIndex);
// Get and display sample waveforms
double[] waves = new double[3];
waves[0] = 5 * Math.Sin(sinPhase);
waves[1] = 4 * Math.Cos(cosPhase);
waves[2] = (new Random()).NextDouble() * 6 - 3;
sinPhase += .1;
cosPhase += .15;
form2.Graph.AppendData(waves[0], waves[1], waves[2]);
AviData data = new AviData(timestamp, waves[0], waves[1], waves[2]);
// Flatten data to buffer
byte[] bytes = FlattenData(data);
destSession.WriteFrame(frame, bytes);
}
private void CopyAvi(AviInputSession source, AviOutputSession dest, out double averageFrameTime)
{
int totalTime = 0;
// Grab each frame.
VisionImage[] frames = new VisionImage[source.Frames];
for (uint i = 0; i < source.Frames; ++i)
{
frames[i] = new VisionImage(ImageType.Rgb32);
source.ReadFrame(frames[i], i);
}
// Convert each frame.
int startTime = System.Environment.TickCount;
for (int i = 0; i < source.Frames; ++i)
{
// Write the frame.
dest.WriteFrame(frames[i]);
}
totalTime = System.Environment.TickCount - startTime;
averageFrameTime = ((double)totalTime) / source.Frames;
}