/************************************************************************
	IMPORTANT NOTE : this file contains two clearly delimited sections :
	the ARCHITECTURE section (in two parts) and the USER section. Each section
	is governed by its own copyright and license. Please check individually
	each section for license and copyright information.
*************************************************************************/

/*******************BEGIN ARCHITECTURE SECTION (part 1/2)****************/

/************************************************************************
    FAUST Architecture File
	Copyright (C) 2003-2011 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 __dsp_combiner__
#define __dsp_combiner__

#include <string.h>
#include <assert.h>
#include "faust/dsp/dsp.h"

// Combine two DSP in sequence

class dsp_sequencer : public dsp {
    
    private:
        
        dsp* fDSP1;
        dsp* fDSP2;
        FAUSTFLOAT** fSeqBuffer;
         
    public:
        
        dsp_sequencer(dsp* dsp1, dsp* dsp2, int buffer_size = 4096)
            :fDSP1(dsp1), fDSP2(dsp2)
        {
            assert(fDSP1->getNumOutputs() == fDSP2->getNumInputs());
            fSeqBuffer = new FAUSTFLOAT*[fDSP1->getNumOutputs()];
            for (int i = 0; i < fDSP1->getNumOutputs(); i++) {
                fSeqBuffer[i] = new FAUSTFLOAT[buffer_size];
            }
        }
        
        virtual ~dsp_sequencer()
        {
            for (int i = 0; i < fDSP1->getNumOutputs(); i++) {
               delete [] fSeqBuffer[i];
            }
            
            delete [] fSeqBuffer;
            delete fDSP1;
            delete fDSP2;
        }
               
        virtual int getNumInputs() { return fDSP1->getNumInputs(); }
        virtual int getNumOutputs() { return fDSP2->getNumOutputs(); }
        virtual void buildUserInterface(UI* ui_interface)
        {
            ui_interface->openTabBox("DSP sequencer");
            ui_interface->openVerticalBox("DSP1");
            fDSP1->buildUserInterface(ui_interface);
            ui_interface->closeBox();
            ui_interface->openVerticalBox("DSP2");
            fDSP2->buildUserInterface(ui_interface);
            ui_interface->closeBox();
            ui_interface->closeBox();
        }
        virtual void init(int samplingRate)
        {
            fDSP1->init(samplingRate);
            fDSP2->init(samplingRate);
        }
        virtual void instanceInit(int samplingRate)
        {
            fDSP1->instanceInit(samplingRate);
            fDSP2->instanceInit(samplingRate);
        }
        virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
        {
            fDSP1->compute(count, inputs, fSeqBuffer);
            fDSP2->compute(count, fSeqBuffer, outputs);
        }
        virtual void compute(double date_usec, int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs) { compute(count, inputs, outputs); }
};

// Combine two DSP in parallel

class dsp_parallelizer : public dsp {
    
    private:
        
        dsp* fDSP1;
        dsp* fDSP2;
         
    public:
        
        dsp_parallelizer(dsp* dsp1, dsp* dsp2, int buffer_size = 4096)
            :fDSP1(dsp1), fDSP2(dsp2)
        {}
        
        virtual ~dsp_parallelizer()
        {
            delete fDSP1;
            delete fDSP2;
        }
               
        virtual int getNumInputs() { return fDSP1->getNumInputs() + fDSP2->getNumInputs(); }
        virtual int getNumOutputs() { return fDSP1->getNumOutputs() + fDSP2->getNumOutputs(); }
        virtual void buildUserInterface(UI* ui_interface)
        {
            ui_interface->openTabBox("DSP parallelizer");
            ui_interface->openVerticalBox("DSP1");
            fDSP1->buildUserInterface(ui_interface);
            ui_interface->closeBox();
            ui_interface->openVerticalBox("DSP2");
            fDSP2->buildUserInterface(ui_interface);
            ui_interface->closeBox();
            ui_interface->closeBox();
        }
        virtual void init(int samplingRate)
        {
            fDSP1->init(samplingRate);
            fDSP2->init(samplingRate);
        }
        virtual void instanceInit(int samplingRate)
        {
            fDSP1->instanceInit(samplingRate);
            fDSP2->instanceInit(samplingRate);
        }
        virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
        {
            fDSP1->compute(count, inputs, outputs);
            
            // Shift inputs/outputs channels for fDSP2
            FAUSTFLOAT** inputs_dsp2 = (FAUSTFLOAT**)alloca(fDSP2->getNumInputs() * sizeof(FAUSTFLOAT*));
            for (int chan = 0; chan < fDSP2->getNumInputs(); chan++) {
                inputs_dsp2[chan] = inputs[fDSP1->getNumInputs() + chan];
            }
            
            FAUSTFLOAT** outputs_dsp2 = (FAUSTFLOAT**)alloca(fDSP2->getNumOutputs() * sizeof(FAUSTFLOAT*));
            for (int chan = 0; chan < fDSP2->getNumOutputs(); chan++) {
                outputs_dsp2[chan] = inputs[fDSP1->getNumOutputs() + chan];
            }
            
            fDSP2->compute(count, inputs_dsp2, outputs_dsp2);
        }
        virtual void compute(double date_usec, int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs) { compute(count, inputs, outputs); }
};

#endif
