[openbeosmediakit] Re: Question on new codec API
- From: "David McPaul" <dmcpaul@xxxxxxxxxxxxxx>
- To: openbeosmediakit@xxxxxxxxxxxxx
- Date: Fri, 05 Dec 2003 22:55:17 +1100 EST
> > The GetNextChunk(void *cookie,
> > void **chunkBuffer, int32 *chunkSize,
> > media_header *mediaHeader)
> >
> > Method does not supply a streamnumber which makes it difficult to
> > determine which cookie I need to cast to.
>
> The idea is that AllocateCookie gets called once for each stream, so
> you can put everything needed for the stream (even it's number)
> into the cookie, and common data into the Reader class itself.
Hmm, I am thinking of a stream as being a stream of audio or video
data.
Are you thinking of a stream being the file?
> > I think all the methods need to supply this parameter
> >
> > FreeCookie, GetStreamInfo, Seek.
>
> We could do that, but do we really need it?
> What exactly are you trying to do?
Well, my AVI reader handles 2 types of streams. Audio and Video.
So I made a seperate cookie for each type. Perhaps that was wrong of
me.
I was expecting that a streamnumber would be supplied so I can
determine what data to supply (audio or video and from what track).
Also some containers have multiple audio or video tracks so how do I
determine which one I should be reading in GetNextChunk?
Cheers
David
--
There is no satisfaction in hanging a man who does not object to it
-- G. B. Shaw
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