/************************** BEGIN proxy-dsp.h **************************/
/************************************************************************
 FAUST Architecture File
 Copyright (C) 2003-2017 GRAME, Centre National de Creation Musicale
 ---------------------------------------------------------------------
 This Architecture section is free software; you can redistribute it
 and/or modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 3 of
 the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; If not, see <http://www.gnu.org/licenses/>.
 
 EXCEPTION : As a special exception, you may create a larger work
 that contains this FAUST architecture section and distribute
 that work under terms of your choice, so long as this FAUST
 architecture section is not modified.
 ************************************************************************/

#ifndef __proxy_dsp__
#define __proxy_dsp__

#include <vector>
#include <map>

#include "faust/dsp/dsp.h"
#include "faust/gui/JSONUIDecoder.h"
#include "faust/gui/JSONUI.h"

/**
 * Proxy dsp definition created from the DSP JSON description.
 * This class allows a 'proxy' dsp to control a real dsp
 * possibly running somewhere else.
 */
class proxy_dsp : public dsp {

    protected:
    
        JSONUIDecoder* fDecoder;
        int fSampleRate;
    
        void init(const std::string& json)
        {
            fDecoder = new JSONUIDecoder(json);
            fSampleRate = -1;
        }
        
    public:
    
        proxy_dsp():fDecoder(nullptr), fSampleRate(-1)
        {}
    
        proxy_dsp(const std::string& json)
        {
            init(json);
        }
          
        proxy_dsp(dsp* dsp)
        {
            JSONUI builder(dsp->getNumInputs(), dsp->getNumOutputs());
            dsp->metadata(&builder);
            dsp->buildUserInterface(&builder);
            fSampleRate = dsp->getSampleRate();
            fDecoder = new JSONUIDecoder(builder.JSON());
        }
      
        virtual ~proxy_dsp()
        {
            delete fDecoder;
        }
    
        virtual int getNumInputs() { return fDecoder->fNumInputs; }
        virtual int getNumOutputs() { return fDecoder->fNumOutputs; }
        
        virtual void buildUserInterface(UI* ui) { fDecoder->buildUserInterface(ui); }
        
        // To possibly implement in a concrete proxy dsp 
        virtual void init(int sample_rate)
        {
            instanceInit(sample_rate);
        }
        virtual void instanceInit(int sample_rate)
        {
            instanceConstants(sample_rate);
            instanceResetUserInterface();
            instanceClear();
        }
        virtual void instanceConstants(int sample_rate) { fSampleRate = sample_rate; }
        virtual void instanceResetUserInterface() { fDecoder->resetUserInterface(); }
        virtual void instanceClear() {}
    
        virtual int getSampleRate() { return fSampleRate; }
    
        virtual proxy_dsp* clone() { return new proxy_dsp(fDecoder->fJSON); }
        virtual void metadata(Meta* m) { fDecoder->metadata(m); }
    
        virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs) {}
        virtual void compute(double date_usec, int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs) {} 
        
};

#endif
/************************** END proxy-dsp.h **************************/