Further protect swap operation

components/rgbd-sources/src/streamer.cpp

@@ -263,30 +263,31 @@ void Streamer::run(bool block) {
 void Streamer::_swap(StreamSource *src) {
 	if (src->jobs == 0) {
 		UNIQUE_LOCK(src->mutex,lk);
-
-		for (unsigned int b=0; b<10; ++b) {
-			auto i = src->clients[b].begin();
-			while (i != src->clients[b].end()) {
-				// Client request completed so remove from list
-				if ((*i).txcount >= (*i).txmax) {
-					LOG(INFO) << "Remove client: " << (*i).uri;
-					i = src->clients[b].erase(i);
-					--src->clientCount;
-				} else {
-					i++;
+		if (src->jobs == 0) {
+			for (unsigned int b=0; b<10; ++b) {
+				auto i = src->clients[b].begin();
+				while (i != src->clients[b].end()) {
+					// Client request completed so remove from list
+					if ((*i).txcount >= (*i).txmax) {
+						LOG(INFO) << "Remove client: " << (*i).uri;
+						i = src->clients[b].erase(i);
+						--src->clientCount;
+					} else {
+						i++;
+					}
 				}
 			}
-		}
 
-		src->src->swap();
-		src->src->getFrames(src->rgb, src->depth);
+			src->src->swap();
+			src->src->getFrames(src->rgb, src->depth);
 
-		//if (!src->rgb.empty() && src->prev_depth.empty()) {
-			//src->prev_depth = cv::Mat(src->rgb.size(), CV_16UC1, cv::Scalar(0));
-			//LOG(INFO) << "Creating prevdepth: " << src->rgb.cols << "," << src->rgb.rows;
-		//}
-		src->jobs = 0;
-		src->frame++;
+			//if (!src->rgb.empty() && src->prev_depth.empty()) {
+				//src->prev_depth = cv::Mat(src->rgb.size(), CV_16UC1, cv::Scalar(0));
+				//LOG(INFO) << "Creating prevdepth: " << src->rgb.cols << "," << src->rgb.rows;
+			//}
+			src->jobs = -1;
+			src->frame++;
+		}
 	}
 }