Date: Sun, 31 Aug 1997 22:13:18 -0700 From: Amancio Hasty <hasty@rah.star-gate.com> To: Denis DeLaRoca <CSP1DWD@MVS.OAC.UCLA.EDU> Cc: multimedia@FreeBSD.ORG Subject: Re: guspnp18 and vat Message-ID: <199709010513.WAA00533@rah.star-gate.com> In-Reply-To: Your message of "Sun, 31 Aug 1997 20:16:00 PDT." <199709010315.UAA02545@hub.freebsd.org>
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>From The Desk Of Denis DeLaRoca :
> The other outstanding problem is with passing the audio device among
> multiple active vats. That is completely broken and I think we have
> to wrestle with vat's code to find out how that is supposed to work.
confbus.cc calls the constructor for GroupIPC
class ConfBus : public TclObject, public IPCHandler {
public:
ConfBus(int channel);
~ConfBus();
void ipc_input(int type, int frompid, u_char* p, int len);
protected:
int command(int argc, const char*const* argv);
GroupIPC* ipc_;
char* callback_;
};
Group-ipc.cc: opens a socket to receive local ip multicast requests:
GroupIPC::GroupIPC(int channel) : handlers_(0)
----
When vat gets a local ip multicast message it gets processesed here:
in confbus.cc:
void ConfBus::ipc_input(int, int, u_char* msg, int cc)
A call gets issue to ui-audio.tcl to request the audio device which
it first try to do open the audio device via the Obtain method
in audio-voxware.cc
Hope this helps,
Amancio
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