Do not use out_of_range for multiplex reconfiguration error

3 files changed, 19 insertions, 10 deletions

diff --git a/src/DabMod.cpp b/src/DabMod.cpp
index dfefb53..b6f2dee 100644
--- a/src/DabMod.cpp
+++ b/src/DabMod.cpp
@@ -36,6 +36,7 @@
 #include "InputMemory.h"
 #include "OutputFile.h"
 #include "FormatConverter.h"
+#include "FrameMultiplexer.h"
 #if defined(HAVE_OUTPUT_UHD)
 #   include "OutputUHD.h"
 #endif
@@ -534,17 +535,19 @@ run_modulator_state_t run_modulator(modulator_data& m)
             running = 0;
             ret = run_modulator_state_t::normal_end;
         }
-    } catch (zmq_input_overflow& e) {
+    }
+    catch (const zmq_input_overflow& e) {
         // The ZeroMQ input has overflowed its buffer
         etiLog.level(warn) << e.what();
         ret = run_modulator_state_t::again;
-    } catch (std::out_of_range& e) {
-        // One of the DSP blocks has detected an invalid change
-        // or value in some settings. This can be due to a multiplex
-        // reconfiguration.
+    }
+    catch (const FrameMultiplexerError& e) {
+        // The FrameMultiplexer saw an error or a change in the size of a
+        // subchannel. This can be due to a multiplex reconfiguration.
         etiLog.level(warn) << e.what();
         ret = run_modulator_state_t::reconfigure;
-    } catch (std::exception& e) {
+    }
+    catch (const std::exception& e) {
         etiLog.level(error) << "Exception caught: " << e.what();
         ret = run_modulator_state_t::failure;
     }
diff --git a/src/FrameMultiplexer.cpp b/src/FrameMultiplexer.cpp
index 4cee0b2..5dc6dca 100644
--- a/src/FrameMultiplexer.cpp
+++ b/src/FrameMultiplexer.cpp
@@ -74,7 +74,7 @@ int FrameMultiplexer::process(std::vector<Buffer*> dataIn, Buffer* dataOut)
     // Write subchannel
     const auto subchannels = m_etiSource.getSubchannels();
     if (subchannels.size() != dataIn.size() - 1) {
-        throw std::out_of_range(
+        throw FrameMultiplexerError(
                 "FrameMultiplexer detected subchannel size change from " +
                 std::to_string(dataIn.size() - 1) + " to " +
                 std::to_string(subchannels.size()));
@@ -82,7 +82,7 @@ int FrameMultiplexer::process(std::vector<Buffer*> dataIn, Buffer* dataOut)
     auto subchannel = subchannels.begin();
     while (in != dataIn.end()) {
         if ((*subchannel)->framesizeCu() * 8 != (*in)->getLength()) {
-            throw std::out_of_range(
+            throw FrameMultiplexerError(
                     "FrameMultiplexer detected invalid subchannel size! " +
                     std::to_string((*subchannel)->framesizeCu() * 8) + " != " +
                     std::to_string((*in)->getLength()));
diff --git a/src/FrameMultiplexer.h b/src/FrameMultiplexer.h
index 680cdc7..4d68d88 100644
--- a/src/FrameMultiplexer.h
+++ b/src/FrameMultiplexer.h
@@ -38,12 +38,18 @@
 
 #include <sys/types.h>
 
+class FrameMultiplexerError : public std::runtime_error {
+    public:
+        FrameMultiplexerError(const char* msg) :
+            std::runtime_error(msg) {}
+        FrameMultiplexerError(const std::string& msg) :
+            std::runtime_error(msg) {}
+};
 
 class FrameMultiplexer : public ModMux
 {
 public:
-    FrameMultiplexer(
-            const EtiSource& etiSource);
+    FrameMultiplexer(const EtiSource& etiSource);
 
     int process(std::vector<Buffer*> dataIn, Buffer* dataOut);
     const char* name() { return "FrameMultiplexer"; }