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Group:  English: Entertainment » microsoft.public.windowsmedia.sdk
Thread: Media Foundation sample request and waveIn problem

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Media Foundation sample request and waveIn problem
Ralf 5/14/2007 1:27:01 PM
Hello,

does anybody know where to find sample code for the media foundation
exclusive mode. Since Windows Vista I need larger buffers if using the MM-API
as in earlier windows versions, what's negative for VoIP applications because
of the increasing delay. So I would like to find out the minimum buffer size
using the new exclusive mode, but I couldn't find an adequate sample.

My second problem is the waveIn stream. If the microphone device is muted,
no data packets are received via MM-API or DirectSound. This behaviour is
different to earlier Windows version, too. OK, this may make sense - but I've
used the stream as a reliable clock generator for sending RTP packets.
- Will this behaviour be the same if accessing the MF buffer directly in
exlusive mode?
- Is their a way (e.g. a registry key) to enable empty waveIn streams?

Best regards,
Ralf

Dear MS developers: Never touch a running system ;-)

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