gr-usrp2: implement start_streaming_at(usrp2::fpga_timestamp time)

[debian/gnuradio] / gr-usrp2 / src / usrp2_sink_16sc.cc

diff --git a/gr-usrp2/src/usrp2_sink_16sc.cc b/gr-usrp2/src/usrp2_sink_16sc.cc
index 1e7c54dcdb16d8c0cb62f0281c39af9303b0c3bf..75cc1f4a6bebb5857ce4fe1ee9df03f2f8680c5c 100644 (file)
--- a/gr-usrp2/src/usrp2_sink_16sc.cc
+++ b/gr-usrp2/src/usrp2_sink_16sc.cc
@@ -67,12 +67,20 @@ usrp2_sink_16sc::work(int noutput_items,
     return 0;
 
   usrp2::tx_metadata metadata;
-  metadata.timestamp = -1;
-  metadata.send_now = 1;
+
+  // Set TX metadata to either start time or now
+  if (d_should_wait == true) {
+    metadata.timestamp = d_tx_time;
+    metadata.send_now = 0;
+    d_should_wait = false;
+  }
+  else {
+    metadata.timestamp = -1;
+    metadata.send_now = 1;
+  }
   metadata.start_of_burst = 1;
 
-  bool ok = d_u2->tx_16sc(0,  // FIXME: someday, streams will have channel numbers
-                         in, noutput_items, &metadata);
+  bool ok = d_u2->tx_16sc(0, in, noutput_items, &metadata);
   if (!ok){
     std::cerr << "usrp2_sink_16sc: tx_16sc failed" << std::endl;
     return -1; // say we're done