Add compression level config opt

components/rgbd-sources/include/ftl/rgbd/streamer.hpp

@@ -112,6 +112,7 @@ class Streamer : public ftl::Configurable {
 	std::mutex job_mtx_;
 	std::condition_variable job_cv_;
 	std::atomic<int> jobs_;
+	int compress_level_;
 
 	void _schedule();
 	void _swap(detail::StreamSource *);

components/rgbd-sources/src/streamer.cpp

@@ -27,6 +27,8 @@ Streamer::Streamer(nlohmann::json &config, Universe *net)
 
 	active_ = false;
 	net_ = net;
+
+	compress_level_ = value("compression", 1);
 	
 	net->bind("find_stream", [this](const std::string &uri) -> optional<UUID> {
 		SHARED_LOCK(mutex_,slk);
@@ -307,7 +309,7 @@ void Streamer::_schedule() {
 					//if (delta) d3 = (d2 * 2) - chunkDepthPrev;
 					//else d3 = d2;
 					//d2.copyTo(chunkDepthPrev);
-					vector<int> pngparams = {cv::IMWRITE_PNG_COMPRESSION, 1}; // Default is 1 for fast, 9 = small but slow.
+					vector<int> pngparams = {cv::IMWRITE_PNG_COMPRESSION, compress_level_}; // Default is 1 for fast, 9 = small but slow.
 					cv::imencode(".png", d2, d_buf, pngparams);
 
 					//LOG(INFO) << "Sending chunk " << chunk << " : size = " << (d_buf.size()+rgb_buf.size()) / 1024 << "kb";