4 files changed, 60 insertions, 7 deletions

diff --git a/src/DabMod.cpp b/src/DabMod.cpp
index dbfc885..83fb210 100644
--- a/src/DabMod.cpp
+++ b/src/DabMod.cpp
@@ -192,8 +192,7 @@ int main(int argc, char* argv[])
     InputMemory* input = NULL;
     ModOutput* output = NULL;
 
-    RemoteControllerTelnet rc (2121);
-    rc.start();
+    BaseRemoteController* rc = NULL;
 
     Logger logger;
 
@@ -310,6 +309,25 @@ int main(int argc, char* argv[])
 
         read_ini(configuration_file, pt);
 
+        // remote controller:
+        if (pt.get("remotecontrol.telnet", 0) == 1) {
+            try {
+                int telnetport = pt.get<int>("remotecontrol.telnetport");
+                RemoteControllerTelnet* telnetrc = new RemoteControllerTelnet(telnetport);
+                telnetrc->start();
+                rc = telnetrc;
+            }
+            catch (std::exception &e) {
+                std::cerr << "Error: " << e.what() << "\n";
+                std::cerr << "       telnet remote control enabled, but no telnetport defined.\n";
+                goto END_MAIN;
+            }
+        }
+        else {
+            rc = new RemoteControllerDummy();
+        }
+
+
         // input params:
         if (pt.get("input.loop", 0) == 1) {
             loop = true;
@@ -513,7 +531,7 @@ int main(int argc, char* argv[])
                                uhdFrequency, uhdTxGain,
                                uhd_enable_sync, uhd_mute_no_timestamps,
                                logger);
-            ((OutputUHD*)output)->enrol_at(rc);
+            ((OutputUHD*)output)->enrol_at(*rc);
         }
         catch (std::exception& e) {
             logger(error, "UHD initialisation failed");
diff --git a/src/OutputUHD.cpp b/src/OutputUHD.cpp
index 808d0e1..a852c10 100644
--- a/src/OutputUHD.cpp
+++ b/src/OutputUHD.cpp
@@ -55,7 +55,9 @@ OutputUHD::OutputUHD(const char* device, unsigned sampleRate,
             device, this);
 
     /* register the parameters that can be remote controlled */
-    RC_ADD_PARAMETER(txgain, "UHD analog daughterboard TX gain")
+    RC_ADD_PARAMETER(txgain, "UHD analog daughterboard TX gain");
+    RC_ADD_PARAMETER(freq,   "UHD transmission frequency");
+    RC_ADD_PARAMETER(muting, "mute the output by stopping the transmitter");
 
     myDevice = device;
     
@@ -96,7 +98,8 @@ OutputUHD::OutputUHD(const char* device, unsigned sampleRate,
     //set the centre frequency
     MDEBUG("OutputUHD:Setting freq to %f...\n", myFrequency);
     myUsrp->set_tx_freq(myFrequency);
-    MDEBUG("OutputUHD:Actual frequency: %f\n", myUsrp->get_tx_freq());
+    myFrequency = myUsrp->get_tx_freq();
+    MDEBUG("OutputUHD:Actual frequency: %f\n", myFrequency);
 
     myUsrp->set_tx_gain(myTxGain);
     MDEBUG("OutputUHD:Actual TX Gain: %f ...\n", myUsrp->get_tx_gain());
@@ -177,6 +180,8 @@ int OutputUHD::process(Buffer* dataIn, Buffer* dataOut)
 {
     struct frame_timestamp ts;
 
+    uwd.muting = myMuting;
+
     // On the first call, we must do some allocation and we must fill
     // the first buffer
     // We will only wait on the barrier on the subsequent calls to 
@@ -370,7 +375,7 @@ void UHDWorker::process(struct UHDWorkerData *uwd)
 
         }
         else { // !uwd->sourceContainsTimestamp
-            if (uwd->muteNoTimestamps) {
+            if (uwd->muting || uwd->muteNoTimestamps) {
                 /* There was some error decoding the timestamp
                  */
                 fprintf(stderr, "UHDOut: Muting sample %d : no timestamp\n",
@@ -390,7 +395,7 @@ void UHDWorker::process(struct UHDWorkerData *uwd)
 
         MDEBUG("UHDWorker::process:num_tx_samps: %zu.\n", num_tx_samps);
         */
-        while (running && (num_acc_samps < sizeIn)) {
+        while (running && !uwd->muting && (num_acc_samps < sizeIn)) {
             size_t samps_to_send = std::min(sizeIn - num_acc_samps, bufsize);
 
             //ensure the the last packet has EOB set if the timestamps has been refreshed
@@ -517,6 +522,16 @@ void OutputUHD::set_parameter(string parameter, string value)
         myUsrp->set_tx_gain(myTxGain);
 #endif
     }
+    else if (parameter == "freq") {
+        ss >> myFrequency;
+#if ENABLE_UHD
+        myUsrp->set_tx_freq(myFrequency);
+        myFrequency = myUsrp->get_tx_freq();
+#endif
+    }
+    else if (parameter == "muting") {
+        ss >> myMuting;
+    }
     else {
         stringstream ss;
         ss << "Parameter '" << parameter << "' is not exported by controllable " << get_rc_name();
@@ -530,6 +545,12 @@ string OutputUHD::get_parameter(string parameter)
     if (parameter == "txgain") {
         ss << myTxGain;
     }
+    else if (parameter == "freq") {
+        ss << myFrequency;
+    }
+    else if (parameter == "muting") {
+        ss << myMuting;
+    }
     else {
         ss << "Parameter '" << parameter << "' is not exported by controllable " << get_rc_name();
         throw ParameterError(ss.str());
diff --git a/src/OutputUHD.h b/src/OutputUHD.h
index 28d3f25..b7e570a 100644
--- a/src/OutputUHD.h
+++ b/src/OutputUHD.h
@@ -102,6 +102,9 @@ struct UHDWorkerData {
     struct UHDWorkerFrameData frame1;
     size_t bufsize; // in bytes
 
+    // muting set by remote control
+    bool muting;
+
     // A barrier to synchronise the two threads
     shared_ptr<barrier> sync_barrier;
 
@@ -187,6 +190,9 @@ class OutputUHD: public ModOutput, public RemoteControllable {
         bool mute_no_timestamps;
         bool enable_sync;
 
+        // muting can only be changed using the remote control
+        bool myMuting;
+
         size_t lastLen;
 };
 
diff --git a/src/RemoteControl.h b/src/RemoteControl.h
index 53fc912..5ffb2fb 100644
--- a/src/RemoteControl.h
+++ b/src/RemoteControl.h
@@ -216,4 +216,12 @@ class RemoteControllerTelnet : public BaseRemoteController {
         int port_;
 };
 
+
+/* The Dummy remote controller does nothing
+ */
+class RemoteControllerDummy : public BaseRemoteController {
+    public:
+        void enrol(RemoteControllable* controllable) {};
+};
+
 #endif