Implements #196 stream capturing

This now allows all reconstruction streams to be recorded to file. Currently playback within reconstruct is not completed, although a separate player app is included.

applications/player/src/main.cpp

@@ -37,7 +37,7 @@ int main(int argc, char **argv) {
 
     int current_stream = 0;
 
-    bool res = r.read(90000000000000, [&current_stream](const ftl::codecs::StreamPacket &spkt, const ftl::codecs::Packet &pkt) {
+    bool res = r.read(90000000000000, [&current_stream,&r](const ftl::codecs::StreamPacket &spkt, const ftl::codecs::Packet &pkt) {
         if (spkt.channel & 0x1 > 0) return;
         if (spkt.streamID == current_stream) {
 
@@ -55,7 +55,12 @@ int main(int argc, char **argv) {
             if (!frame.empty()) {
                 cv::imshow("Player", frame);
             }
-            cv::waitKey(20);
+            int key = cv::waitKey(20);
+            if (key >= 48 && key <= 57) {
+                current_stream = key - 48;
+            } else if (key == 27) {
+                r.end();
+            }
         }
     });