private void btn_encode_Click(object sender, EventArgs e)
{
if (oform != null && File.Exists(oform.FileName)) { //has a filestream been opened?
hScrollBar1.Enabled = false;
checkBox1.Enabled = false;
btn_encode.Enabled = false;
// create instance of video reader
VideoFileReader reader = new VideoFileReader();
VideoFileWriter writer = new VideoFileWriter();
reader.Open(oform.FileName);
if (checkBox1.Checked) { //Is the user requesting a AVI?
writer.Open(apath + "output.wmv", 320, 200, reader.FrameRate, VideoCodec.WMV2);
}
// print some of its attributes
logbox.Text += "Width: " + reader.Width + "px" + Environment.NewLine;
logbox.Text += ("Height: " + reader.Height + "px" + Environment.NewLine);
logbox.Text += ("Fps: " + reader.FrameRate + "fps"+ Environment.NewLine);
logbox.Text += ("Codec: " + reader.CodecName + Environment.NewLine);
logbox.Text += ("Frames: " + reader.FrameCount + Environment.NewLine);
//start encoding classes
TMVVideo tvid = new TMVVideo();
TMVEncoder tmv = new TMVEncoder();
//tmvframe.Threshold = hScrollBar1.Value;
Bitmap videoFrame = new Bitmap(320,200);
logbox.Text += "Conversion started @ " + DateTime.Now.ToString();
string logtxt = logbox.Text;
logbox.Text += "Current Frame: 0";
TMVFont renderfont = new TMVFont(apath + "font.bin");
TMVFrame tframe;
for (int i = 0; i < reader.FrameCount; i++) {
videoFrame = resize_image(reader.ReadVideoFrame());
tframe = tmv.encode(videoFrame);
tvid.addFrame(tframe);
obox.Image = tframe.renderFrame(renderfont);
pbar.Value = (int)((i * 100) / (reader.FrameCount-1));
logbox.Text = logtxt + Environment.NewLine + "Current Frame: " + i + "/" + (reader.FrameCount-1);
if (checkBox1.Checked) { //Is the user requesting a AVI?
writer.WriteVideoFrame((Bitmap)obox.Image);
}
if (closing)
{
return;
}
fbox.Image = videoFrame;
Application.DoEvents();
}
logbox.Text += Environment.NewLine + "All frames converted, attempting to interleave audio.";
if (File.Exists(apath + "temp.wav")) { //remove any previous streams
File.Delete(apath + "temp.wav");
}
AviManager aviManager = new AviManager(oform.FileName, true);
try { //try to read the stream
AudioStream waveStream = aviManager.GetWaveStream();
logbox.Text += Environment.NewLine + "Audio stream found:";
logbox.Text += Environment.NewLine + "Sample Rate: " + waveStream.CountSamplesPerSecond.ToString();
logbox.Text += Environment.NewLine + "Bits:" + waveStream.CountBitsPerSample.ToString();
logbox.Text += Environment.NewLine + "Number of Channels: " + waveStream.CountChannels.ToString();
File.Delete(apath + "temp.wav");
waveStream.ExportStream(apath+"temp.wav");
waveStream.Close();
aviManager.Close();
byte[] audio_data = readWav(apath + "temp.wav");
if (reader.FrameRate > 99) { //sometimes frame rate is stored fixed point CRUDE
tvid.setFPS((decimal)(reader.FrameRate / 10.0));
tvid.loadAudio(audio_data);
tvid.save();
}
else {
tvid.setFPS(reader.FrameRate);
tvid.loadAudio(audio_data);
tvid.save();
}
}
catch { //error somewhere here, continue silent.
logbox.Text += Environment.NewLine+"Error, source video does not have WAV audio, video will be silent.";
if (reader.FrameRate > 99) { //sometimes frame rate is stored fixed point CRUDE
tvid.setFPS((decimal)(reader.FrameRate / 10.0));
tvid.loadAudio(new Byte[reader.FrameCount]);
tvid.save();
}
else {
tvid.setFPS(reader.FrameRate);
tvid.loadAudio(new Byte[reader.FrameCount]);
tvid.save();
}
}
logbox.Text += Environment.NewLine + "Conversion finished @ " + DateTime.Now.ToString();
writer.Close();
reader.Close();
hScrollBar1.Enabled = true;
checkBox1.Enabled = true;
btn_encode.Enabled = true;
}
else {
logbox.Text += Environment.NewLine + "Error: Select a file (Using File -> Open) before attempting to encode.";
}
}
/// <summary>Copy a piece of video and wave sound int a new file</summary>
/// <param name="newFileName">File name</param>
/// <param name="startAtSecond">Start copying at second x</param>
/// <param name="stopAtSecond">Stop copying at second y</param>
/// <returns>AviManager for the new video</returns>
public AviManager CopyTo(String newFileName, float startAtSecond, float stopAtSecond)
{
AviManager newFile = new AviManager(newFileName, false);
try {
//copy video stream
VideoStream videoStream = GetVideoStream();
int startFrameIndex = (int)(videoStream.FrameRate * startAtSecond);
int stopFrameIndex = (int)(videoStream.FrameRate * stopAtSecond);
videoStream.GetFrameOpen();
Bitmap bmp = videoStream.GetBitmap(startFrameIndex);
VideoStream newStream = newFile.AddVideoStream(false, videoStream.FrameRate, bmp);
for (int n = startFrameIndex + 1; n <= stopFrameIndex; n++) {
bmp = videoStream.GetBitmap(n);
newStream.AddFrame(bmp);
}
videoStream.GetFrameClose();
//copy audio stream
AudioStream waveStream = GetWaveStream();
Avi.AVISTREAMINFO streamInfo = new Avi.AVISTREAMINFO();
Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT();
int streamLength = 0;
IntPtr ptrRawData = waveStream.GetStreamData(
ref streamInfo,
ref streamFormat,
ref streamLength);
int startByteIndex = (int)( startAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8);
int stopByteIndex = (int)( stopAtSecond * (float)(waveStream.CountSamplesPerSecond * streamFormat.nChannels * waveStream.CountBitsPerSample) / 8);
IntPtr ptrWavePart = new IntPtr(ptrRawData.ToInt32() + startByteIndex);
byte[] rawData = new byte[stopByteIndex - startByteIndex];
Marshal.Copy(ptrWavePart, rawData, 0, rawData.Length);
Marshal.FreeHGlobal(ptrRawData);
streamInfo.dwLength = rawData.Length;
streamInfo.dwStart = 0;
IntPtr unmanagedRawData = Marshal.AllocHGlobal(rawData.Length);
Marshal.Copy(rawData, 0, unmanagedRawData, rawData.Length);
newFile.AddAudioStream(unmanagedRawData, streamInfo, streamFormat, rawData.Length);
Marshal.FreeHGlobal(unmanagedRawData);
} catch (Exception ex) {
newFile.Close();
throw ex;
}
return newFile;
}
/// <summary>Add a wave audio stream from another file to this file</summary>
/// <param name="waveFileName">Name of the wave file to add</param>
/// <param name="startAtFrameIndex">Index of the video frame at which the sound is going to start</param>
public void AddAudioStream(String waveFileName, int startAtFrameIndex)
{
AviManager audioManager = new AviManager(waveFileName, true);
AudioStream newStream = audioManager.GetWaveStream();
AddAudioStream(newStream, startAtFrameIndex);
audioManager.Close();
}
/// <summary>Copy all frames into a new file</summary>
/// <param name="fileName">Name of the new file</param>
/// <param name="recompress">true: Compress the new stream</param>
/// <returns>AviManager for the new file</returns>
/// <remarks>Use this method if you want to append frames to an existing, compressed stream</remarks>
public AviManager DecompressToNewFile(String fileName, bool recompress, out VideoStream newStream2)
{
AviManager newFile = new AviManager(fileName, false);
this.GetFrameOpen();
Bitmap frame = GetBitmap(0);
VideoStream newStream = newFile.AddVideoStream(recompress, frameRate, frame);
frame.Dispose();
for(int n=1; n<countFrames; n++){
frame = GetBitmap(n);
newStream.AddFrame(frame);
frame.Dispose();
}
this.GetFrameClose();
newStream2 = newStream;
return newFile;
}
