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Preliminary implementation of recording 'save & continue'

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This commit is contained in:
Bruno Herbelin
2021-12-01 23:05:41 +01:00
parent 73d4f7c1ea
commit 66f445997d
3 changed files with 54 additions and 3 deletions
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35
FrameGrabber.cpp
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@@ -60,9 +60,22 @@ void FrameGrabbing::add(FrameGrabber *rec)
grabbers_.push_back(rec);
}
void FrameGrabbing::chain(FrameGrabber *rec, FrameGrabber *next_rec)
{
if (rec != nullptr && next_rec != nullptr)
{
// add grabber if not yet
if ( std::find(grabbers_.begin(), grabbers_.end(), rec) == grabbers_.end() )
grabbers_.push_back(rec);
grabbers_chain_[next_rec] = rec;
}
}
void FrameGrabbing::verify(FrameGrabber **rec)
{
if ( std::find(grabbers_.begin(), grabbers_.end(), *rec) == grabbers_.end() )
if ( std::find(grabbers_.begin(), grabbers_.end(), *rec) == grabbers_.end() &&
grabbers_chain_.find(*rec) == grabbers_chain_.end() )
*rec = nullptr;
}
@@ -214,6 +227,7 @@ void FrameGrabbing::grabFrame(FrameBuffer *frame_buffer)
FrameGrabber *rec = *iter;
rec->addFrame(buffer, caps_);
// remove finished recorders
if (rec->finished()) {
iter = grabbers_.erase(iter);
delete rec;
@@ -222,6 +236,25 @@ void FrameGrabbing::grabFrame(FrameBuffer *frame_buffer)
++iter;
}
// manage the list of chainned recorder
std::map<FrameGrabber *, FrameGrabber *>::iterator chain = grabbers_chain_.begin();
while (chain != grabbers_chain_.end()) {
// update frame grabber of chain list
chain->first->addFrame(buffer, caps_);
// if the chained recorder is now active
if (chain->first->active_ && chain->first->accept_buffer_){
// add it to main grabbers,
grabbers_.push_back(chain->first);
// stop the replaced grabber
chain->second->stop();
// loop in chain list: done with this chain
chain = grabbers_chain_.erase(chain);
}
else
// loop in chain list
++chain;
}
// unref / free the frame
gst_buffer_unref(buffer);
}