bool CvCaptureAVI_VFW::open( const char* filename )
{
close();
icvInitCapture_VFW();
if( !filename )
return false;
HRESULT hr = AVIFileOpen( &avifile, filename, OF_READ, NULL );
if( SUCCEEDED(hr))
{
hr = AVIFileGetStream( avifile, &avistream, streamtypeVIDEO, 0 );
if( SUCCEEDED(hr))
{
hr = AVIStreamInfo( avistream, &aviinfo, sizeof(aviinfo));
if( SUCCEEDED(hr))
{
size.width = aviinfo.rcFrame.right - aviinfo.rcFrame.left;
size.height = aviinfo.rcFrame.bottom - aviinfo.rcFrame.top;
BITMAPINFOHEADER bmihdr = icvBitmapHeader( size.width, size.height, 24 );
film_range.start_index = (int)aviinfo.dwStart;
film_range.end_index = film_range.start_index + (int)aviinfo.dwLength;
fps = (double)aviinfo.dwRate/aviinfo.dwScale;
pos = film_range.start_index;
getframe = AVIStreamGetFrameOpen( avistream, &bmihdr );
if( getframe != 0 )
return true;
}
}
}
close();
return false;
}
bool CvVideoWriter_VFW::open( const char* filename, int _fourcc, double _fps, CvSize frameSize, bool isColor )
{
close();
icvInitCapture_VFW();
if( AVIFileOpen( &avifile, filename, OF_CREATE | OF_WRITE, 0 ) == AVIERR_OK )
{
fourcc = _fourcc;
fps = _fps;
if( frameSize.width > 0 && frameSize.height > 0 &&
!createStreams( frameSize, isColor ) )
{
close();
return false;
}
}
return true;
}
bool CAviLoader::open( const char* filename )
{
close();
icvInitCapture_VFW();
if( !filename )
return false;
HRESULT hr = AVIFileOpen( &avifile, filename, OF_READ, NULL );
if( SUCCEEDED(hr))
{
hr = AVIFileGetStream( avifile, &avistream, streamtypeVIDEO, 0 );
if( SUCCEEDED(hr))
{
hr = AVIStreamInfo( avistream, &aviinfo, sizeof(aviinfo));
if( SUCCEEDED(hr))
{
//int fcc = aviinfo.fccHandler;
data_offset = 0;
size.width = aviinfo.rcFrame.right - aviinfo.rcFrame.left;
size.height = aviinfo.rcFrame.bottom - aviinfo.rcFrame.top;
BITMAPINFOHEADER bmih = icvBitmapHeader( size.width, size.height, 24 );
if(frame)
delete []frame;
frame = new unsigned char[size.width*size.height*3];
film_range.start_index = (int)aviinfo.dwStart;
film_range.end_index = film_range.start_index + (int)aviinfo.dwLength;
fps = (double)aviinfo.dwRate/aviinfo.dwScale;
pos = film_range.start_index;
getframe = AVIStreamGetFrameOpen( avistream, &bmih );
if( getframe != 0 )
return true;
}
}
}
close();
return false;
}
