QuickTime on Windows - Movies

最新推荐文章于 2025-08-15 13:27:42 发布

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#windows #null #mfc #apple #url #class

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Apple has a really good example class for MFC programming - CQuickTime -- very helpful!

I wanted to load a movie with a URL. There are a few good examples out there... so here's what I learned.

Movie LoadMovieFromURL( const UInt8* url, CFIndex len, Rect* bounds )
{  // you have to set the port first - MacSetPort, CreatePortAssociation 
    CFURLRef    urlRef  = ::CFURLCreateWithBytes( null, url, len, kCFStringEncodingUTF8, null );
    OSErr       error;
    
    if( null == urlRef )
        return null;
    
    Movie    movie        = null;
    Handle  dataRef;
    OSType  dataRefType;
    error = ::QTNewDataReferenceFromCFURL( urlRef, 0, &dataRef, &dataRefType );
    
    if( noErr == error )
      {
        short    movieId;
        error = ::NewMovieFromDataRef( &movie, 0, &movieId, dataRef, dataRefType );
        
        if( noErr == error )
          {
            ::GetMovieBox( movie, bounds );
          }
      }
    
    ::CFRelease( urlRef );
    
    return movie;
}

Before calling this routine, you need to set the graphics port. You can create a graphics port for your Windows HWND with CreatePortAssociation

With loading images, I didn't use a CFURLRef. I am here. Why? Just practicing how to skin cats many ways. Handy to know when things don't work.

I make the movie controller with the following routine:

MovieController MakeMovieController( Movie movie, CWnd* wnd, Rect* bounds )
{
    Rect    theMovieRect;
    CRect    box;
    
    ::SetMovieBox( movie, bounds );
    
    wnd->GetClientRect( box );
    
    theMovieRect.left    = 0;
    theMovieRect.top    = 0;
    theMovieRect.right  = box.Width();
    theMovieRect.bottom  = box.Height();
    
    // Attach a movie controller
    return ::NewMovieController( movie, &theMovieRect, mcTopLeftMovie );
}