private void CreateVideoStream(int width, int height, int stride, int rate, int scale)
{
VfwApi.AVISTREAMINFO sinfo = new VfwApi.AVISTREAMINFO();
sinfo.fccType = (int)VfwApi.streamtypeVIDEO;
sinfo.fccHandler = (int)VfwApi.mmioFOURCC('D', 'I', 'B', ' ');
sinfo.dwFlags = 0;
sinfo.dwCaps = 0;
sinfo.wPriority = 0;
sinfo.wLanguage = 0;
sinfo.dwScale = scale;
sinfo.dwRate = rate;
sinfo.dwStart = 0;
sinfo.dwLength = 0;
sinfo.dwInitialFrames = 0;
sinfo.dwSuggestedBufferSize = height * stride;
sinfo.dwQuality = -1;
sinfo.dwSampleSize = 0;
sinfo.rcFrame = new VfwApi.RECT();
sinfo.rcFrame.top = 0;
sinfo.rcFrame.left = 0;
sinfo.rcFrame.bottom = (uint)height;
sinfo.rcFrame.right = (uint)width;
sinfo.dwEditCount = 0;
sinfo.dwFormatChangeCount = 0;
sinfo.szName = new ushort[64];
int hr = VfwApi.AVIFileCreateStream(pfile_, ref pavi_, ref sinfo);
if (hr != 0)
{
throw new VfwException("AVIFileCreateStream", hr);
}
}
private void CreateAudioStream(int sample, int length, int sample_size)
{
VfwApi.AVISTREAMINFO sinfo = new VfwApi.AVISTREAMINFO();
sinfo.fccType = (int)VfwApi.streamtypeAUDIO;
sinfo.fccHandler = 0;
sinfo.dwFlags = 0;
sinfo.dwCaps = 0;
sinfo.wPriority = 0;
sinfo.wLanguage = 0;
sinfo.dwScale = 1;
sinfo.dwRate = sample;
sinfo.dwStart = 0;
sinfo.dwLength = length;
sinfo.dwInitialFrames = 0;
sinfo.dwSuggestedBufferSize = 0;
sinfo.dwQuality = 0;
sinfo.dwSampleSize = sample_size;
sinfo.rcFrame = new VfwApi.RECT();
sinfo.rcFrame.top = 0;
sinfo.rcFrame.left = 0;
sinfo.rcFrame.bottom = 0;
sinfo.rcFrame.right = 0;
sinfo.dwEditCount = 0;
sinfo.dwFormatChangeCount = 0;
sinfo.szName = new ushort[64];
int hr = VfwApi.AVIFileCreateStream(pfile_, ref pavi_audio_, ref sinfo);
if (hr != 0)
{
throw new VfwException("AVIFileCreateStream", hr);
}
}
public void Open(string filename)
{
if (!File.Exists(filename))
{
throw new FileNotFoundException();
}
Initialize();
int hr = VfwApi.AVIFileOpen(ref pfile_, filename, VfwApi.OF_READ | VfwApi.OF_SHARE_DENY_NONE, IntPtr.Zero);
if (hr != 0)
{
throw new VfwException("AVIFileOpen", hr);
}
hr = VfwApi.AVIFileGetStream(pfile_, ref pavi_, 0, 0);
if (hr != 0)
{
throw new VfwException("AVIFileGetStream", hr);
}
frame_start_ = VfwApi.AVIStreamStart(pavi_);
frame_length_ = VfwApi.AVIStreamLength(pavi_);
VfwApi.AVISTREAMINFO psi = new VfwApi.AVISTREAMINFO();
hr = VfwApi.AVIStreamInfo(pavi_, ref psi, Marshal.SizeOf(new VfwApi.AVISTREAMINFO()));
if (hr != 0)
{
throw new VfwException("AVIStreamInfo", hr);
}
rate_ = psi.dwRate;
scale_ = psi.dwScale;
pgf_ = VfwApi.AVIStreamGetFrameOpen(pavi_, IntPtr.Zero);
if (pgf_ == IntPtr.Zero)
{
throw new VfwException("AVIStreamGetFrameOpen", 0);
}
GetBitmapHeader();
}
