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/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2003 Thomas Grill (xovo@gmx.net)
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 ==================================================
/*! \brief Flext dsp enabled base object
*/
class FLEXT_SHARE flext_dsp:
public flext_base
{
FLEXT_HEADER_S(flext_dsp,flext_base,Setup)
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; }
/*! \brief returns number of audio system input channels
\bug Doesn't work in Max/MSP - is always 0
*/
int ChannelsIn() const { return chnsin; }
/*! \brief returns number of audio system output channels
\bug Doesn't work in Max/MSP - is always 0
*/
int ChannelsOut() const { return chnsout; }
//! typedef describing a signal vector
#if FLEXT_SYS == FLEXT_SYS_JMAX
typedef fts_symbol_t t_signalvec;
#else
typedef t_sample *t_signalvec;
#endif
//! @}
// --- 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!
\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 Called with every signal vector - here you do the dsp calculation
\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);
#if FLEXT_SYS != FLEXT_SYS_MAX
/*! \brief called with "enable" message: pauses/resumes dsp
\note PD only - implicitely defined in Max/MSP
*/
virtual void m_enable(bool on);
#endif
//! @}
/*! \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::tp_sig,m); }
/*! \brief Add signal inlet (with description)
\param desc Description of inlet
*/
void AddInSignal(const char *desc) { AddInlet(xlet::tp_sig,1,desc); }
/*! \brief Add signal outlet(s)
\param m Number of inlets to add
*/
void AddOutSignal(int m = 1) { AddOutlet(xlet::tp_sig,m); }
/*! \brief Add signal outlet (with description)
\param desc Description of outlet
*/
void AddOutSignal(const char *desc) { AddOutlet(xlet::tp_sig,1,desc); }
//! @}
//! @}
protected:
flext_dsp();
virtual ~flext_dsp();
private:
// not static, could be different in different patchers..
float srate;
int blksz;
int chnsin,chnsout;
// setup function
static void Setup(t_classid c);
// callback functions
#if FLEXT_SYS == FLEXT_SYS_JMAX
static void cb_dsp(fts_object_t *o, int winlet, fts_symbol_t s, int ac, const fts_atom_t *at);
// static void cb_dsp_init(fts_object_t *o, int winlet, fts_symbol_t *s, int ac, const fts_atom_t *at);
// static void cb_dsp_delete(fts_object_t *o, int winlet, fts_symbol_t *s, int ac, const fts_atom_t *at);
#else
static void cb_dsp(t_class *c,t_signal **s);
#endif
#if FLEXT_SYS != FLEXT_SYS_MAX
#if FLEXT_SYS == FLEXT_SYS_JMAX
static void cb_enable(fts_object_t *o, int winlet, fts_symbol_t s, int ac, const fts_atom_t *at);
#else
static void cb_enable(t_class *c,t_float on);
#endif
bool dspon;
#endif
// dsp stuff
#if FLEXT_SYS == FLEXT_SYS_JMAX
static void dspmeth(fts_word_t *);
static const t_symbol *dspsym;
#else
static t_int *dspmeth(t_int *w);
#endif
t_signalvec *invecs,*outvecs;
};
#endif
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