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/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2005 Thomas Grill (gr@grrrr.org)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
/*! \file fldsp.h
\brief Declares the flext dsp class
*/
#ifndef __FLDSP_H
#define __FLDSP_H
// include the header file declaring the base classes
#include "flext.h"
// === flext_dsp ==================================================
class FLEXT_SHARE FLEXT_CLASSDEF(flext_dsp);
typedef class FLEXT_SHARE FLEXT_CLASSDEF(flext_dsp) flext_dsp;
/*! \brief Flext dsp enabled base object
*/
class FLEXT_SHARE FLEXT_CLASSDEF(flext_dsp):
public flext_base
{
FLEXT_HEADER_S(FLEXT_CLASSDEF(flext_dsp),flext_base,Setup)
friend class FLEXT_SHARE FLEXT_CLASSDEF(flext_base);
public:
/*! \defgroup FLEXT_DSP Flext dsp class
@{
*/
/*! \defgroup FLEXT_C_DSP Basic dsp functionality
@{
*/
//! returns current sample rate
float Samplerate() const { return srate; }
//! returns current block (aka vector) size
int Blocksize() const { return blksz; }
//! returns array of input vectors (CntInSig() vectors)
t_sample *const *InSig() const { return vecs; }
//! returns input vector
t_sample *InSig(int i) const { return InSig()[i]; }
//! returns array of output vectors (CntOutSig() vectors)
// \todo cache that returned pointer
t_sample *const *OutSig() const
{
int i = CntInSig();
// we have at least one actual dsp in vector
return vecs+(i?i:1);
}
//! returns output vector
t_sample *OutSig(int i) const { return OutSig()[i]; }
//! typedef describing a signal vector
typedef t_sample *t_signalvec;
//! @}
// --- inheritable virtual methods --------------------------------
/*! \defgroup FLEXT_C_DSP_VIRTUAL Flext virtual dsp functions
@{
*/
/*! \brief Called on every dsp init.
\note Don't expect any valid data in the signal vectors!
flext_dsp::CbDsp should not be called by the derived class
\return true (default)... use DSP, false, don't use DSP
*/
virtual bool CbDsp();
/*! \brief Called with every signal vector - here you do the dsp calculation
flext_dsp::CbSignal fills all output vectors with silence
*/
virtual void CbSignal();
/*! \brief Deprecated method for CbSignal
\deprecated
\param n: frames (aka samples) in one signal vector
\param insigs: array of input vectors (get number with function CntInSig())
\param outsigs: array of output vectors (get number with function CntOutSig())
*/
virtual void m_dsp(int n,t_signalvec const *insigs,t_signalvec const *outsigs);
/*! \brief Deprecated method for CbSignal
\deprecated
\param n: frames (aka samples) in one signal vector
\param insigs: array of input vectors (get number with function CntInSig())
\param outsigs: array of output vectors (get number with function CntOutSig())
*/
virtual void m_signal(int n,t_sample *const *insigs,t_sample *const *outsigs);
//! @}
/*! \defgroup FLEXT_C_DSP_INOUT Flext dsp in-/outlet functions
\note These must be called in the class' constructor
@{
*/
// --- inlet/outlet stuff -----------------------------------------
/*! \brief Add signal inlet(s)
\param m Number of inlets to add
*/
void AddInSignal(int m = 1) { AddInlet(xlet_sig,m); }
/*! \brief Add signal inlet (with description)
\param desc Description of inlet
*/
void AddInSignal(const char *desc) { AddInlet(xlet_sig,1,desc); }
/*! \brief Add signal outlet(s)
\param m Number of inlets to add
*/
void AddOutSignal(int m = 1) { AddOutlet(xlet_sig,m); }
/*! \brief Add signal outlet (with description)
\param desc Description of outlet
*/
void AddOutSignal(const char *desc) { AddOutlet(xlet_sig,1,desc); }
//! @}
//! @}
protected:
FLEXT_CLASSDEF(flext_dsp)();
virtual void Exit();
private:
// not static, could be different in different patchers..
float srate;
int blksz;
t_signalvec *vecs;
// setup function
static void Setup(t_classid c);
#if FLEXT_SYS == FLEXT_SYS_PD
static void cb_enable(flext_hdr *c,t_float on);
bool dspon;
#endif
static inline flext_dsp *thisObject(flext_hdr *c) { return FLEXT_CAST<flext_dsp *>(c->data); }
void SetupDsp(t_signal **sp);
// dsp stuff
static t_int *dspmeth(t_int *w);
};
#endif
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