public void EncodeFrame(int frameNo, Bitmap inp, IEntropyCodec c)
{
if (inp == null ||
c == null)
{
return;
}
int width = inp.Width;
int height = inp.Height;
if (width != frameWidth ||
height != frameHeight)
{
return;
}
// !!!{{ TODO: add the encoding code here
// frame header: [ MAGIC_FRAME, frameNo ]
c.PutBits(MAGIC_FRAME, 32);
c.PutBits(frameNo, 16);
for (int y = 0; y < frameHeight; y++)
{
for (int x = 0; x < frameWidth; x++)
{
byte gr = (byte)(inp.GetPixel(x, y).GetBrightness() * 255.0f);
c.Put(gr);
}
}
// !!!}}
}
public Bitmap DecodeFrame(int frameNo, IEntropyCodec c)
{
if (c == null)
{
return(null);
}
// !!!{{ TODO: add the decoding code here
// Check the frame header:
uint magic = (uint)c.GetBits(32);
if (magic != MAGIC_FRAME)
{
return(null);
}
int frNo = (int)c.GetBits(16);
if (frNo != frameNo)
{
return(null);
}
Bitmap result = new Bitmap(frameWidth, frameHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
for (int y = 0; y < frameHeight; y++)
{
for (int x = 0; x < frameWidth; x++)
{
int gr = c.Get();
result.SetPixel(x, y, Color.FromArgb(gr, gr, gr));
}
}
return(result);
// !!!}}
}
private void buttonEncode_Click(object sender, EventArgs e)
{
string fn = string.Format(textInputMask.Text, 0);
if (!File.Exists(fn))
{
MessageBox.Show("Invalid input files!");
return;
}
string cd = Directory.GetCurrentDirectory();
SaveFileDialog sfd = new SaveFileDialog();
sfd.Title = "Save Video File";
sfd.Filter = "BIN Files|*.bin";
sfd.AddExtension = true;
sfd.FileName = videoFileName;
if (sfd.ShowDialog() != DialogResult.OK)
{
return;
}
videoFileName = Path.GetFullPath(sfd.FileName);
FileStream fs = new FileStream(videoFileName, FileMode.Create);
VideoCodec vc = new VideoCodec();
Directory.SetCurrentDirectory(cd);
labelSpeed.Text = "Encoding..";
Stopwatch sw = new Stopwatch();
sw.Start();
Bitmap frameImage = (Bitmap)Image.FromFile(fn);
IEntropyCodec s = vc.EncodeHeader(frameImage.Width, frameImage.Height, (float)numericFps.Value, fs);
int i = 0;
do
{
vc.EncodeFrame(i, frameImage, s);
frameImage.Dispose();
frameImage = null;
// next frame:
fn = string.Format(textInputMask.Text, ++i);
if (!File.Exists(fn))
{
break;
}
frameImage = (Bitmap)Image.FromFile(fn);
}while (true);
if (frameImage != null)
{
frameImage.Dispose();
}
s.Close();
labelSpeed.Text = string.Format("Encoded {0} frames in {1:f} s!", i, (float)(sw.ElapsedMilliseconds * 0.001));
sw.Stop();
fs.Close();
}
