[synthesis] Add C++ implemention of SMSSynthesis.

3 files changed, 107 insertions, 4 deletions

diff --git a/src/simpl/synthesis.cpp b/src/simpl/synthesis.cpp
index 168749b..9dd1131 100644
--- a/src/simpl/synthesis.cpp
+++ b/src/simpl/synthesis.cpp
@@ -51,7 +51,85 @@ void Synthesis::synth_frame(Frame* frame) {
 
 Frames Synthesis::synth(Frames frames) {
     for(int i = 0; i < frames.size(); i++) {
+        sample* synth_audio = new sample[_hop_size];
+        memset(synth_audio, 0.0, sizeof(sample) * _hop_size);
+        frames[i]->synth(synth_audio);
         synth_frame(frames[i]);
     }
     return frames;
 }
+
+
+// ---------------------------------------------------------------------------
+// SMSSynthesis
+// ---------------------------------------------------------------------------
+
+SMSSynthesis::SMSSynthesis() {
+    sms_init();
+
+    sms_initSynthParams(&_synth_params);
+    _synth_params.iSamplingRate = _sampling_rate;
+    _synth_params.iDetSynthType = SMS_DET_SIN;
+    _synth_params.iSynthesisType = SMS_STYPE_DET;
+    _synth_params.iStochasticType = SMS_STOC_NONE;
+    _synth_params.sizeHop = _hop_size;
+    _synth_params.nTracks = _max_partials;
+    _synth_params.deEmphasis = 0;
+    sms_initSynth(&_synth_params);
+
+    sms_allocFrame(&_data, _max_partials,
+                   num_stochastic_coeffs(), 1,
+                   stochastic_type(), 0);
+}
+
+SMSSynthesis::~SMSSynthesis() {
+    sms_freeSynth(&_synth_params);
+    sms_freeFrame(&_data);
+    sms_free();
+}
+
+void SMSSynthesis::hop_size(int new_hop_size) {
+    _hop_size = new_hop_size;
+
+    sms_freeSynth(&_synth_params);
+    _synth_params.sizeHop = _hop_size;
+    sms_initSynth(&_synth_params);
+}
+
+void SMSSynthesis::max_partials(int new_max_partials) {
+    _max_partials = new_max_partials;
+
+    sms_freeSynth(&_synth_params);
+    sms_freeFrame(&_data);
+    _synth_params.nTracks = _max_partials;
+    sms_initSynth(&_synth_params);
+    sms_allocFrame(&_data, _max_partials,
+                   num_stochastic_coeffs(), 1,
+                   stochastic_type(), 0);
+}
+
+int SMSSynthesis::num_stochastic_coeffs() {
+    return _synth_params.nStochasticCoeff;
+}
+
+int SMSSynthesis::stochastic_type() {
+    return _synth_params.iStochasticType;
+}
+
+int SMSSynthesis::det_synthesis_type() {
+    return _synth_params.iDetSynthType;
+}
+
+void SMSSynthesis::det_synthesis_type(int new_det_synthesis_type) {
+    _synth_params.iDetSynthType = new_det_synthesis_type;
+}
+
+void SMSSynthesis::synth_frame(Frame* frame) {
+    for(int i = 0; i < _data.nTracks; i++) {
+        _data.pFSinAmp[i] = frame->peak(i)->amplitude;
+        _data.pFSinFreq[i] = frame->peak(i)->frequency;
+        _data.pFSinPha[i] = frame->peak(i)->phase;
+    }
+
+    sms_synthesize(&_data, frame->synth(), &_synth_params);
+}
diff --git a/src/simpl/synthesis.h b/src/simpl/synthesis.h
index 43b45d0..b3efd9c 100644
--- a/src/simpl/synthesis.h
+++ b/src/simpl/synthesis.h
@@ -3,6 +3,10 @@
 
 #include "base.h"
 
+extern "C" {
+    #include "sms.h"
+}
+
 using namespace std;
 
 namespace simpl
@@ -16,7 +20,7 @@ namespace simpl
 // ---------------------------------------------------------------------------
 
 class Synthesis {
-    private:
+    protected:
         int _frame_size;
         int _hop_size;
         int _max_partials;
@@ -27,9 +31,9 @@ class Synthesis {
         int frame_size();
         void frame_size(int new_frame_size);
         int hop_size();
-        void hop_size(int new_hop_size);
+        virtual void hop_size(int new_hop_size);
         int max_partials();
-        void max_partials(int new_max_partials);
+        virtual void max_partials(int new_max_partials);
         int sampling_rate();
         void sampling_rate(int new_sampling_rate);
 
@@ -38,6 +42,27 @@ class Synthesis {
 };
 
 
+// ---------------------------------------------------------------------------
+// SMSSynthesis
+// ---------------------------------------------------------------------------
+class SMSSynthesis : public Synthesis {
+    private:
+        SMSSynthParams _synth_params;
+        SMSData _data;
+
+    public:
+        SMSSynthesis();
+        ~SMSSynthesis();
+        void hop_size(int new_hop_size);
+        void max_partials(int new_max_partials);
+        int num_stochastic_coeffs();
+        int stochastic_type();
+        int det_synthesis_type();
+        void det_synthesis_type(int new_det_synthesis_type);
+        void synth_frame(Frame* frame);
+};
+
+
 } // end of namespace Simpl
 
 #endif
diff --git a/src/sms/sms.h b/src/sms/sms.h
index 14399fc..7372a8a 100644
--- a/src/sms/sms.h
+++ b/src/sms/sms.h
@@ -320,7 +320,7 @@ typedef struct
  * synthesized frame.
  *
  */
-typedef struct
+typedef struct SMSSynthParams
 {
     int iStochasticType;        /*!<  type of stochastic model defined by SMS_StocSynthType 
                                   \see SMS_StocSynthType */