Re: [Gnash] Using gnash to play swf file

[Meryl Silverburgh]

On 2/25/07, strk <address@hidden> wrote:
> On Sat, Feb 24, 2007 at 11:48:38PM -0600, Meryl Silverburgh wrote:
> > Hi,
> >
> > I have been trying to gnash to play youtube swf file (player2.swf).
> > I the problem is somehow gnash set the properties 'setMovie',
> > 'playMovie' to a different as_object than the one when it tries to
> > call method 'setMovie', 'playMovie'.
> ...
> >
> > Please let me know if this make sense.
>
> It makes sense, as any object in ActionScript is an instance of
> a class, which may export an interface. The interface is an as_object
> itself. Note that player2.swf is using registerClass and IIRc also
> 'extends' which are both used to design inheritance chains.
>
> Try to find out more about the object those functions are registered
> against. Is it a 'properties' object ? Can it be it's being replaced
> by an explicit override of 'properties' ?
> You're on a good track by reducing the testcase, but you need a way
> to make your tests verifiable against the proprietary player.
> What we use with Gnash is a textarea and a set of utility functions
> to perform some checks, like: check_equals(typeof(myObj.setMovie), 'function').
> You can get all the facilities by including the Dejagnu.swf file in your test,
> either as a built-in clip or by using an IMPORT tag (symbol name is 'dejagnu').

Using flare to decompile the player2.swf, I think the swf creates an
object 'Movie' which inherits from the MovieClip (buildin in Flash),
but overloading the 'setMovie' and 'playMovie' functions.

// the decompile code of player2.swf:
logic.Movie extends MovieClip;
       var v2 = v1.prototype;


       v2.setMovie = function (_video_id, image_url, movie_url, l,
_track_id, eurl, append_vars) {
        //....
        }

   v2.playMovie = function () {
        //....
        }


Please let m know where in the gnash code which I should look to
handling inheritance like the above code.

Thank you.


> --strk;