Hi Ross,
Yes, EventTrigger can fix this issue.
Refer to DeviceSource.cpp in live555 source code. I call "doGetNextFrame"(will
copy buffer to fTo and call FramedSource::afterGetting) in event trigger func
"deliverFrame" when frame is available. It can work. Thank you. :)
void DeviceSource::deliverFrame0(void* clientData) {
((DeviceSource*)clientData)->doGetNextFrame();
}
Thanks.
/Qian
-----邮件原件-----
发件人: live-devel [mailto:live-devel-boun...@us.live555.com] 代表 Ross Finlayson
发送时间: 2019年9月24日 12:27
收件人: LIVE555 Streaming Media - development & use
主题: Re: [Live-devel] 答复: empty payload data will be sent in MultiFramedRTPSink
> On Sep 23, 2019, at 9:15 PM, Zhang Qian（张倩） <qianzh...@asrmicro.com> wrote:
>
> Hi Ross,
>
> Thanks for your reply. Do you mean I just call scheduleDelayedTask if
> (fFrameSize > 0) as below ? Seems that it will block the live555 thread...
>
> if (fFrameSize > 0)
> {
> // Set the 'presentation time':
> gettimeofday(&fPresentationTime, NULL);
> fDurationInMicroseconds = (mCurrentTimeStampUs - mLastTimeStampUs);
> nextTask() =
> envir().taskScheduler().scheduleDelayedTask(schedule_delayUs,
> (TaskFunc*)FramedSource::afterGetting, this);
> }
> return;
Yes, this should work. Of course, in the case where “fFrameSize == 0”, you
must arrange for this code to be called again later, when a (non-empty) frame
becomes available. In other words, you need to handle an ‘event’ when a new
frame becomes available. Remember that LIVE555-based applications are
event-based, using an event loop.
If you haven’t already done so, please read
http://live555.com/liveMedia/faq.html#other-kinds-of-event
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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