Store the initial values of controllers

src/sfizz/Synth.cpp

@@ -231,8 +231,9 @@ void sfz::Synth::clear()
     modificationTime = fs::file_time_type::min();
 
     // set default controllers
-    cc(0, 7, 100);     // volume
-    hdcc(0, 10, 0.5f); // pan
+    fill(absl::MakeSpan(ccInitialValues), 0.0f);
+    initCc(7, 100);     // volume
+    initHdcc(10, 0.5f); // pan
 
     // set default controller labels
     insertPairUniquely(ccLabels, 7, "Volume");
@@ -326,14 +327,14 @@ void sfz::Synth::handleControlOpcodes(const std::vector<Opcode>& members)
             if (Default::ccNumberRange.containsWithEnd(member.parameters.back())) {
                 const auto ccValue = readOpcode(member.value, Default::midi7Range);
                 if (ccValue)
-                    resources.midiState.ccEvent(0, member.parameters.back(), normalizeCC(*ccValue));
+                    initCc(member.parameters.back(), *ccValue);
             }
             break;
         case hash("set_hdcc&"):
             if (Default::ccNumberRange.containsWithEnd(member.parameters.back())) {
                 const auto ccValue = readOpcode(member.value, Default::normalizedRange);
                 if (ccValue)
-                    resources.midiState.ccEvent(0, member.parameters.back(), *ccValue);
+                    initHdcc(member.parameters.back(), *ccValue);
             }
             break;
         case hash("label_cc&"):
@@ -1137,6 +1138,27 @@ void sfz::Synth::hdcc(int delay, int ccNumber, float normValue) noexcept
     ccDispatch(delay, ccNumber, normValue);
 }
 
+void sfz::Synth::initCc(int ccNumber, uint8_t ccValue) noexcept
+{
+    const float normValue = normalizeCC(ccValue);
+    initHdcc(ccNumber, normValue);
+}
+
+void sfz::Synth::initHdcc(int ccNumber, float normValue) noexcept
+{
+    ASSERT(ccNumber >= 0);
+    ASSERT(ccNumber < config::numCCs);
+    ccInitialValues[ccNumber] = normValue;
+    resources.midiState.ccEvent(0, ccNumber, normValue);
+}
+
+float sfz::Synth::getHdccInit(int ccNumber)
+{
+    ASSERT(ccNumber >= 0);
+    ASSERT(ccNumber < config::numCCs);
+    return ccInitialValues[ccNumber];
+}
+
 void sfz::Synth::pitchWheel(int delay, int pitch) noexcept
 {
     ASSERT(pitch <= 8192);

src/sfizz/Synth.h

@@ -370,6 +370,27 @@ public:
      */
     void hdcc(int delay, int ccNumber, float normValue) noexcept;
     /**
+     * @brief Set the initial value of a controller and send it to the synth
+     *
+     * @param ccNumber the cc number
+     * @param ccValue the cc value
+     */
+    void initCc(int ccNumber, uint8_t ccValue) noexcept;
+    /**
+     * @brief Set the initial value of a controller and send it to the synth
+     *
+     * @param ccNumber the cc number
+     * @param normValue the normalized cc value, in domain 0 to 1
+     */
+    void initHdcc(int ccNumber, float normValue) noexcept;
+    /**
+     * @brief Get the initial value of a controller under the current instrument
+     *
+     * @param ccNumber the cc number
+     * @return the initial value
+     */
+    float getHdccInit(int ccNumber);
+   /**
      * @brief Send a pitch bend event to the synth
      *
      * @param delay the delay at which the event occurs; this should be lower
@@ -909,6 +930,9 @@ private:
     };
     SettingsPerVoice settingsPerVoice;
 
+    // Controller initial values
+    std::array<float, config::numCCs> ccInitialValues;
+
     Duration dispatchDuration { 0 };
 
     Parser parser;

tests/SynthT.cpp

@@ -1348,3 +1348,24 @@ TEST_CASE("[Synth] Off by with CC switches")
     REQUIRE( numPlayingVoices(synth) == 1 );
     REQUIRE( getPlayingVoices(synth).front()->getRegion()->sampleId.filename() == "*saw" );
 }
+
+TEST_CASE("[Synth] Initial values of CC")
+{
+    sfz::Synth synth;
+
+    synth.loadSfzString(fs::current_path() / "init_cc.sfz", R"(
+        <region> sample=*sine
+    )");
+
+    REQUIRE(synth.getHdccInit(111) == 0.0f);
+    REQUIRE(synth.getHdccInit(7) == Approx(100.0f / 127)); // default volume
+    REQUIRE(synth.getHdccInit(10) == 0.5f); // default pan
+
+    synth.loadSfzString(fs::current_path() / "init_cc.sfz", R"(
+        <control> set_hdcc111=0.1234 set_cc112=77
+        <region> sample=*sine
+    )");
+
+    REQUIRE(synth.getHdccInit(111) == Approx(0.1234f));
+    REQUIRE(synth.getHdccInit(112) == Approx(77.0f / 127));
+}