/// <summary>Add one frame to a new stream</summary>
/// <param name="bmp"></param>
/// <remarks>
/// This works only with uncompressed streams,
/// and compressed streams that have not been saved yet.
/// Use DecompressToNewFile to edit saved compressed streams.
/// </remarks>
public void AddFrame(Bitmap bmp)
{
//bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);
// NEW 2012-11-10
if (countFrames == 0)
{
CopyPalette(bmp.Palette);
SetFormat(writeCompressed ? compressedStream : StreamPointer, countFrames);
}
BitmapData bmpDat = bmp.LockBits(
new Rectangle(
0, 0, bmp.Width, bmp.Height),
ImageLockMode.ReadOnly, bmp.PixelFormat);
int result = Avi.AVIStreamWrite(writeCompressed ? compressedStream : StreamPointer,
countFrames, 1,
bmpDat.Scan0,
(Int32)(bmpDat.Stride * bmpDat.Height),
0, 0, 0);
if (result != 0)
{
throw new Exception("Exception in VideoStreamWrite: " + result.ToString());
}
bmp.UnlockBits(bmpDat);
countFrames++;
}
/// <summary>Add an existing wave audio stream to the file</summary>
/// <param name="newStream">The stream to add</param>
public void AddAudioStream(AudioStream newStream)
{
Avi.AVISTREAMINFO streamInfo = new Avi.AVISTREAMINFO();
Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT();
int streamLength = 0;
IntPtr waveData = newStream.GetStreamData(ref streamInfo, ref streamFormat, ref streamLength);
IntPtr aviStream;
int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref streamInfo);
if (result != 0)
{
throw new Exception("Exception in AVIFileCreateStream: " + result.ToString());
}
result = Avi.AVIStreamSetFormat(aviStream, 0, ref streamFormat, Marshal.SizeOf(streamFormat));
if (result != 0)
{
throw new Exception("Exception in AVIStreamSetFormat: " + result.ToString());
}
result = Avi.AVIStreamWrite(aviStream, 0, streamLength, waveData, streamLength, Avi.AVIIF_KEYFRAME, 0, 0);
if (result != 0)
{
throw new Exception("Exception in AVIStreamWrite: " + result.ToString());
}
result = Avi.AVIStreamRelease(aviStream);
if (result != 0)
{
throw new Exception("Exception in AVIStreamRelease: " + result.ToString());
}
}
/// <summary>Add one frame to a new stream</summary>
/// <param name="bmp"></param>
/// <remarks>
/// This works only with uncompressed streams,
/// and compressed streams that have not been saved yet.
/// Use DecompressToNewFile to edit saved compressed streams.
/// </remarks>
public void AddFrame(Bitmap bmp)
{
try
{
bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);
BitmapData bmpDat = bmp.LockBits(
new Rectangle(
0, 0, bmp.Width, bmp.Height),
ImageLockMode.ReadOnly, bmp.PixelFormat);
int result = Avi.AVIStreamWrite(writeCompressed ? compressedStream : aviStream,
countFrames, 1,
bmpDat.Scan0,
(Int32)(bmpDat.Stride * bmpDat.Height),
0, 0, 0);
if (result != 0)
{
throw new Exception("Exception in VideoStreamWrite: " + result.ToString());
}
bmp.UnlockBits(bmpDat);
countFrames++;
}
catch (Exception exp)
{
Debug.Write(exp.ToString());
}
}
/// <summary>Add an existing wave audio stream to the file</summary>
/// <param name="newStream">The stream to add</param>
/// <param name="startAtFrameIndex">
/// The index of the video frame at which the sound is going to start.
/// '0' inserts the sound at the beginning of the video.
/// </param>
public void AddAudioStream(AudioStream newStream, int startAtFrameIndex)
{
Avi.AVISTREAMINFO streamInfo = new Avi.AVISTREAMINFO();
Avi.PCMWAVEFORMAT streamFormat = new Avi.PCMWAVEFORMAT();
int streamLength = 0;
IntPtr rawData = newStream.GetStreamData(ref streamInfo, ref streamFormat, ref streamLength);
IntPtr waveData = rawData;
if (startAtFrameIndex > 0)
{
//not supported
//streamInfo.dwStart = startAtFrameIndex;
double framesPerSecond = GetVideoStream().FrameRate;
double samplesPerSecond = newStream.CountSamplesPerSecond;
double startAtSecond = startAtFrameIndex / framesPerSecond;
int startAtSample = (int)(samplesPerSecond * startAtSecond);
waveData = InsertSilence(startAtSample - 1, waveData, streamLength, ref streamInfo);
}
IntPtr aviStream;
int result = Avi.AVIFileCreateStream(aviFile, out aviStream, ref streamInfo);
if (result != 0)
{
throw new Exception("Exception in AVIFileCreateStream: " + result.ToString());
}
result = Avi.AVIStreamSetFormat(aviStream, 0, ref streamFormat, Marshal.SizeOf(streamFormat));
if (result != 0)
{
throw new Exception("Exception in AVIStreamSetFormat: " + result.ToString());
}
result = Avi.AVIStreamWrite(aviStream, 0, streamLength, waveData, streamLength, Avi.AVIIF_KEYFRAME, 0, 0);
if (result != 0)
{
throw new Exception("Exception in AVIStreamWrite: " + result.ToString());
}
result = Avi.AVIStreamRelease(aviStream);
if (result != 0)
{
throw new Exception("Exception in AVIStreamRelease: " + result.ToString());
}
Marshal.FreeHGlobal(waveData);
}