Add a panic button

src/sfizz.h

@@ -369,6 +369,13 @@ SFIZZ_EXPORTED_API void sfizz_enable_logging(sfizz_synth_t* synth);
  */
 SFIZZ_EXPORTED_API void sfizz_disable_logging(sfizz_synth_t* synth);
 
+/**
+ * @brief Shuts down the current processing, clear buffers and reset the voices.
+ *
+ * @param synth
+ */
+SFIZZ_EXPORTED_API void sfizz_all_sound_off(sfizz_synth_t* synth);
+
 #ifdef __cplusplus
 }
 #endif

src/sfizz.hpp

@@ -256,6 +256,11 @@ public:
      *
      */
     void disableLogging() noexcept;
+    /**
+     * @brief Shuts down the current processing, clear buffers and reset the voices.
+     *
+     */
+    void allSoundOff() noexcept;
 private:
     std::unique_ptr<sfz::Synth> synth;
 };

src/sfizz/Synth.cpp

@@ -579,6 +579,8 @@ void sfz::Synth::noteOn(int delay, int noteNumber, uint8_t velocity) noexcept
     ASSERT(noteNumber < 128);
     ASSERT(noteNumber >= 0);
 
+    DBG("Note on at " << noteNumber << " (" << +velocity << ")");
+
     ScopedTiming logger { dispatchDuration, ScopedTiming::Operation::addToDuration };
     resources.midiState.noteOnEvent(delay, noteNumber, velocity);
 
@@ -595,6 +597,8 @@ void sfz::Synth::noteOff(int delay, int noteNumber, uint8_t velocity) noexcept
     ASSERT(noteNumber >= 0);
     UNUSED(velocity);
 
+    DBG("Note off at " << noteNumber << " (" << +velocity << ")");
+
     ScopedTiming logger { dispatchDuration, ScopedTiming::Operation::addToDuration };
     resources.midiState.noteOffEvent(delay, noteNumber, velocity);
 
@@ -962,3 +966,11 @@ void sfz::Synth::disableLogging() noexcept
 {
     resources.logger.disableLogging();
 }
+
+void sfz::Synth::allSoundOff() noexcept
+{
+    for (auto &voice: voices)
+        voice->reset();
+    for (auto& effectBus: effectBuses)
+        effectBus->clear();
+}

src/sfizz/Synth.h

@@ -361,6 +361,12 @@ public:
      *
      */
     void disableLogging() noexcept;
+
+    /**
+     * @brief Shuts down the current processing, clear buffers and reset the voices.
+     *
+     */
+    void allSoundOff() noexcept;
 protected:
     /**
      * @brief The parser callback; this is called by the parent object each time

src/sfizz/sfizz.cpp

@@ -195,3 +195,8 @@ void sfz::Sfizz::disableLogging() noexcept
 {
     synth->disableLogging();
 }
+
+void sfz::Sfizz::allSoundOff() noexcept
+{
+    synth->allSoundOff();
+}

src/sfizz/sfizz_wrapper.cpp

@@ -237,12 +237,19 @@ void sfizz_enable_logging(sfizz_synth_t* synth)
     auto self = reinterpret_cast<sfz::Synth*>(synth);
     return self->enableLogging();
 }
+
 void sfizz_disable_logging(sfizz_synth_t* synth)
 {
     auto self = reinterpret_cast<sfz::Synth*>(synth);
     return self->disableLogging();
 }
 
+void sfizz_all_sound_off(sfizz_synth_t* synth)
+{
+    auto self = reinterpret_cast<sfz::Synth*>(synth);
+    return self->allSoundOff();
+}
+
 #ifdef __cplusplus
 }
 #endif

tests/SynthT.cpp

@@ -26,6 +26,17 @@ TEST_CASE("[Synth] Play and check active voices")
     REQUIRE(synth.getNumActiveVoices() == 0);
 }
 
+TEST_CASE("[Synth] All sound off")
+{
+    sfz::Synth synth;
+    synth.loadSfzFile(fs::current_path() / "tests/TestFiles/groups_avl.sfz");
+    synth.noteOn(0, 36, 24);
+    synth.noteOn(0, 36, 89);
+    REQUIRE(synth.getNumActiveVoices() == 2);
+    synth.allSoundOff();
+    REQUIRE(synth.getNumActiveVoices() == 0);
+}
+
 TEST_CASE("[Synth] Change the number of voice while playing")
 {
     sfz::Synth synth;