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/************************************************************************
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_adapter__
#define __dsp_adapter__
#include <string.h>
#include "faust/dsp/dsp.h"
// Adapts a DSP for a different number of inputs/outputs
class dsp_adapter : public decorator_dsp {
private:
FAUSTFLOAT** fAdaptedInputs;
FAUSTFLOAT** fAdaptedOutputs;
int fHardwareInputs;
int fHardwareOutputs;
void adaptBuffers(FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
{
for (int i = 0; i < fHardwareInputs; i++) {
fAdaptedInputs[i] = inputs[i];
}
for (int i = 0; i < fHardwareOutputs; i++) {
fAdaptedOutputs[i] = outputs[i];
}
}
public:
dsp_adapter(dsp* dsp, int hardware_inputs, int hardware_outputs, int buffer_size):decorator_dsp(dsp)
{
fHardwareInputs = hardware_inputs;
fHardwareOutputs = hardware_outputs;
fAdaptedInputs = new FAUSTFLOAT*[dsp->getNumInputs()];
for (int i = 0; i < dsp->getNumInputs() - fHardwareInputs; i++) {
fAdaptedInputs[i + fHardwareInputs] = new FAUSTFLOAT[buffer_size];
memset(fAdaptedInputs[i + fHardwareInputs], 0, sizeof(FAUSTFLOAT) * buffer_size);
}
fAdaptedOutputs = new FAUSTFLOAT*[dsp->getNumOutputs()];
for (int i = 0; i < dsp->getNumOutputs() - fHardwareOutputs; i++) {
fAdaptedOutputs[i + fHardwareOutputs] = new FAUSTFLOAT[buffer_size];
memset(fAdaptedOutputs[i + fHardwareOutputs], 0, sizeof(FAUSTFLOAT) * buffer_size);
}
}
virtual ~dsp_adapter()
{
for (int i = 0; i < fDSP->getNumInputs() - fHardwareInputs; i++) {
delete [] fAdaptedInputs[i + fHardwareInputs];
}
delete [] fAdaptedInputs;
for (int i = 0; i < fDSP->getNumOutputs() - fHardwareOutputs; i++) {
delete [] fAdaptedOutputs[i + fHardwareOutputs];
}
delete [] fAdaptedOutputs;
}
virtual int getNumInputs() { return fHardwareInputs; }
virtual int getNumOutputs() { return fHardwareOutputs; }
virtual void compute(double date_usec, int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
{
adaptBuffers(inputs, outputs);
fDSP->compute(date_usec, count, fAdaptedInputs, fAdaptedOutputs);
}
virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
{
adaptBuffers(inputs, outputs);
fDSP->compute(count, fAdaptedInputs, fAdaptedOutputs);
}
};
// Adapts a DSP for a different sample size
template <typename SAMPLE_TYPE>
class dsp_sample_adapter : public decorator_dsp {
protected:
SAMPLE_TYPE** fAdaptedInputs;
SAMPLE_TYPE** fAdaptedOutputs;
void adaptInputBuffers(int count, FAUSTFLOAT** inputs)
{
for (int chan = 0; chan < fDSP->getNumInputs(); chan++) {
for (int frame = 0; frame < count; frame++) {
fAdaptedInputs[chan][frame] = SAMPLE_TYPE(inputs[chan][frame]);
}
}
}
void adaptOutputsBuffers(int count, FAUSTFLOAT** outputs)
{
for (int chan = 0; chan < fDSP->getNumOutputs(); chan++) {
for (int frame = 0; frame < count; frame++) {
outputs[chan][frame] = SAMPLE_TYPE(fAdaptedOutputs[chan][frame]);
}
}
}
public:
dsp_sample_adapter(dsp* dsp):decorator_dsp(dsp)
{
fAdaptedInputs = new SAMPLE_TYPE*[dsp->getNumInputs()];
for (int i = 0; i < dsp->getNumInputs(); i++) {
fAdaptedInputs[i] = new SAMPLE_TYPE[4096];
}
fAdaptedOutputs = new SAMPLE_TYPE*[dsp->getNumOutputs()];
for (int i = 0; i < dsp->getNumOutputs(); i++) {
fAdaptedOutputs[i] = new SAMPLE_TYPE[4096];
}
}
virtual ~dsp_sample_adapter()
{
for (int i = 0; i < fDSP->getNumInputs(); i++) {
delete [] fAdaptedInputs[i];
}
delete [] fAdaptedInputs;
for (int i = 0; i < fDSP->getNumOutputs(); i++) {
delete [] fAdaptedOutputs[i];
}
delete [] fAdaptedOutputs;
}
virtual void compute(int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
{
adaptInputBuffers(count, inputs);
// DSP base class uses FAUSTFLOAT** type, so reinterpret_cast has to be used even if the real DSP uses SAMPLE_TYPE
fDSP->compute(count, reinterpret_cast<FAUSTFLOAT**>(fAdaptedInputs), reinterpret_cast<FAUSTFLOAT**>(fAdaptedOutputs));
adaptOutputsBuffers(count, outputs);
}
virtual void compute(double date_usec, int count, FAUSTFLOAT** inputs, FAUSTFLOAT** outputs)
{
adaptInputBuffers(count, inputs);
// DSP base class uses FAUSTFLOAT** type, so reinterpret_cast has to be used even if the real DSP uses SAMPLE_TYPE
fDSP->compute(date_usec, count, reinterpret_cast<FAUSTFLOAT**>(fAdaptedInputs), reinterpret_cast<FAUSTFLOAT**>(fAdaptedOutputs));
adaptOutputsBuffers(count, outputs);
}
};
#endif
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