[Live-devel] trickplay related patches

[Matthew Romaine]

Hello gang,

I'm attaching some patches for the trickplay effort that everyone seems 
to be working on ;)

My main focus was on getting it working with liveMedia's RTSP test 
server that comes with the liveMedia package. At the moment, liveMedia 
only supports trickplay streaming for wav and mp3 files (and only ff 
for mp3s). However, I did modify the wav.c demux just to get a sense of 
rate-changed playback for local audio. This patch has been included as 
well.

The liveMedia RTSP server does sample-based skipping (i.e., every 4th 
sample for a 4x rate change), so the pitch naturally goes higher. 
Unfortunately the wav.c demux gets the samples in chunks and I didn't 
see a quick way to tell it to buffer data at the sample level, so the 
expected inter-frame popping occurs. one way may be to just multiply 
the buffer by a simple window.

All the patches (except livedotcom.cpp) are diffs against the 20050120 
snapshot. The livedotcom.cpp includes the kasenna additions once posted 
(but never committed) back in November, but unfortunately I don't 
remember what the original base was.

Let me know if there are any issues. The changes focus on audio 
streaming, so hopefully no video functionality has been affected ...

matt


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