private void timer1_Tick(object sender, EventArgs e)
{
// Quit running conversions if no more filters
if (curFilter >= filters.Count)
{
timer1.Enabled = false;
return;
}
string filterName, commonName, outputPath;
GetFilterName(curFilter, out filterName, out commonName, out outputPath);
double averageFrameTime;
// Create compressed AVI file.
using (AviOutputSession outputSession = new AviOutputSession(outputPath, 30, filterName))
{
// Copy the frames from original AVI file to the compressed file.
CopyAvi(inputSession, outputSession, out averageFrameTime);
}
// Calculate results of compression and write them to the table
long fileSize = new System.IO.FileInfo(outputPath).Length;
double quality;
using (AviInputSession writtenSession = new AviInputSession(outputPath)) {
quality = CompareAvi(inputSession, writtenSession);
}
AddItem(commonName, (double)fileSize / 1024, averageFrameTime, quality);
progressBar1.Value = progressBar1.Value + 1;
curFilter++;
Refresh();
}
// 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 timer1_Tick(object sender, EventArgs e)
{
// Done writing?
if (curFrame >= numFrames || mode != RunMode.WritingFrames)
{
// Close AVIs
sourceSession.Dispose();
sourceSession = null;
destSession.Dispose();
destSession = null;
// Setup for reading AVI frames
mode = RunMode.ReadingFrames;
startButton.Enabled = true;
stopButton.Enabled = false;
sourceSession = new AviInputSession(Path.Text);
form2.Graph.SetupForReading((int)sourceSession.Frames);
form2.FrameSlider.Enabled = true;
form2.FrameSlider.SetRangeFromAvi(sourceSession);
form2.FrameNum.Enabled = true;
form2.FrameNum.Maximum = (int)sourceSession.Frames - 1;
// Update display to reflect change in state
statusLabel.Text = "Reading AVI File and Data";
this.Refresh();
form2.Graph.ClearGraph();
ReadAllData();
ReadFrame(0);
form2.Graph.DoneReading();
timer1.Enabled = false;
return;
}
// Write the frame
WriteFrame(curFrame);
curFrame++;
}
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;
}
private void startButton_Click(object sender, EventArgs e)
{
// Close AVI if it is open
if (mode != RunMode.NotRunning)
{
form2.Graph.ClearGraph();
form2.FrameNum.Enabled = false;
form2.FrameSlider.Enabled = false;
if (sourceSession != null)
{
sourceSession.Dispose();
sourceSession = null;
}
}
// Load base AVI
sourceSession = new AviInputSession(System.IO.Path.Combine(ExampleImagesFolder.GetExampleImagesFolder(), @"AVIs\Flame.avi"));
numFrames = sourceSession.Frames;
// Create output AVI
if (Path.Text == "")
{
Browse();
}
destSession = new AviOutputSession(Path.Text, sourceSession.FramesPerSecond, null, -1, true, 10000);
// Start writing
statusLabel.Text = "Writing AVI File and Data";
curFrame = 0;
mode = RunMode.WritingFrames;
frame.Type = ImageType.Rgb32;
imageViewer1.Attach(frame);
timer1.Enabled = true;
startButton.Enabled = false;
stopButton.Enabled = true;
}
private void LoadAviFilters()
{
filters = AviOutputSession.GetCompressionFilters();
}
