We are trying to stream from a live source with Live555.
We implement our own DeviceSource class. In this class we implement
doGetNextFrame in the following (logic) way. We remove all the
unnecessary implementation details so you can see the idea
If no frame is available do the following
nextTask() =
envir().taskScheduler().scheduleDelayedTask(30000,(TaskFunc*)nextTime,
this);
If a frame is available do the following
If (fFrameSize < fMaxSize)
This should be "<=", not "<".
Also, I hope you are setting "fFrameSize" properly before you get to
this "if" statement.
{
memcpy(fTo, Buffer_getUserPtr(hEncBuf) ,fFrameSize); // copy the
frame to Live555
nextTask() =
envir().taskScheduler().scheduleDelayedTask(0,(TaskFunc*)FramedSource::afterGetting,
this);
You can probably replace this last statement with:
FramedSource::afterGetting(this);
which is more efficient (and will avoid infinite recursion, because
you're reading from a live source).
}
else
{
What should we do? (We do not understand what should we do in this option)
Something like this:
fNumTruncatedBytes = fFrameSize - fMaxSize;
fFrameSize = fMaxSize;
FramedSource::afterGetting(this);
Note, however, that if data gets truncated, then it is *dropped*.
This means that you should make sure that your downstream object
always has enough buffer space to avoid trunction - i.e., so that
fMaxSize is always >= fFrameSize
--
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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