Created the talkbox DSP mm

Author: aure

Sources/CSoundpipeAudioKit/Effects/Talkbox.mm

@@ -0,0 +1,55 @@
+// Copyright AudioKit. All Rights Reserved.
+
+#include "SoundpipeDSPBase.h"
+#include "ParameterRamper.h"
+#include "Soundpipe.h"
+
+enum TalkboxParameter : AUParameterAddress {
+    TalkboxParameterQuality,
+};
+
+class TalkboxDSP : public SoundpipeDSPBase {
+private:
+    sp_talkbox *talkbox;
+    ParameterRamper qualityRamp{1.0};
+
+public:
+    TalkboxDSP() {
+        inputBufferLists.resize(2);  // Set up for two input streams
+        parameters[TalkboxParameterQuality] = &qualityRamp;
+    }
+
+    void init(int channelCount, double sampleRate) override {
+        SoundpipeDSPBase::init(channelCount, sampleRate);
+        sp_talkbox_create(&talkbox);
+        sp_talkbox_init(sp, talkbox);
+    }
+
+    void deinit() override {
+        SoundpipeDSPBase::deinit();
+        sp_talkbox_destroy(&talkbox);
+    }
+
+    void reset() override {
+        SoundpipeDSPBase::reset();
+        if (!isInitialized) return;
+        sp_talkbox_init(sp, talkbox);
+    }
+
+    void process(FrameRange range) override {
+        for (int i : range) {
+            float sourceIn = inputSample(0, i);      // source input (first input stream)
+            float excitationIn = input2Sample(0, i); // excitation input (second input stream)
+            float outSample;
+
+            talkbox->quality = qualityRamp.getAndStep();
+ 
+            sp_talkbox_compute(sp, talkbox, &sourceIn, &excitationIn, &outSample);
+
+            outputSample(0, i) = outSample;
+        }
+    }
+};
+
+AK_REGISTER_DSP(TalkboxDSP, "tbox")
+AK_REGISTER_PARAMETER(TalkboxParameterQuality)