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/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001,2002 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 flbase.cpp
\brief Implementation of the internal flext base classes.
\remark This is all derived from GEM by Mark Danks
*/
#include "flext.h"
#include "flinternal.h"
#include <string.h>
/////////////////////////////////////////////////////////
//
// flext_obj
//
/////////////////////////////////////////////////////////
flext_hdr *flext_obj::m_holder = NULL;
const t_symbol *flext_obj::m_holdname = NULL;
bool flext_obj::m_holdattr = false;
int flext_obj::m_holdaargc = 0;
const t_atom *flext_obj::m_holdaargv = NULL;
bool flext_obj::process_attributes = false;
/////////////////////////////////////////////////////////
// Constructor
//
/////////////////////////////////////////////////////////
flext_obj :: flext_obj()
: x_obj(m_holder)
, m_name(m_holdname)
, procattr(m_holdattr)
, init_ok(true)
{
#if FLEXT_SYS == FLEXT_SYS_PD
m_canvas = canvas_getcurrent();
#elif FLEXT_SYS == FLEXT_SYS_MAX
m_canvas = (t_patcher *)gensym("#P")->s_thing;
x_obj->curinlet = 0;
#endif
}
/////////////////////////////////////////////////////////
// Destructor
//
/////////////////////////////////////////////////////////
flext_obj :: ~flext_obj() {}
void flext_obj::DefineHelp(t_class *c,const char *ref,const char *dir,bool addtilde)
{
#if FLEXT_SYS == FLEXT_SYS_PD
char tmp[256];
if(dir) {
strcpy(tmp,dir);
strcat(tmp,"/");
strcat(tmp,ref);
if(addtilde) strcat(tmp,"~");
}
else
strcpy(tmp,ref);
::class_sethelpsymbol(c,gensym(const_cast<char *>(tmp)));
#else
// no solution for Max/MSP yet
#endif
}
/////////////////////////////////////////////////////////
// overloaded new/delete memory allocation methods
//
/////////////////////////////////////////////////////////
void *flext_obj::operator new(size_t bytes)
{
bytes += sizeof(size_t);
char *blk = (char *)getbytes(bytes);
*(size_t *)blk = bytes;
return blk+sizeof(size_t);
}
void flext_obj::operator delete(void *blk)
{
char *ori = (char *)blk-sizeof(size_t);
size_t bytes = *(size_t *)ori;
freebytes(ori,bytes);
}
void *flext_obj::NewAligned(size_t bytes,int bitalign)
{
const size_t ovh = sizeof(size_t)+sizeof(char *);
const unsigned long alignovh = bitalign/8-1;
bytes += ovh+alignovh;
char *blk = (char *)getbytes(bytes);
char *ablk = reinterpret_cast<char *>((reinterpret_cast<unsigned long>(blk)+ovh+alignovh) & ~alignovh);
*(char **)(ablk-sizeof(size_t)-sizeof(char *)) = blk;
*(size_t *)(ablk-sizeof(size_t)) = bytes;
return ablk;
}
void flext_obj::FreeAligned(void *blk)
{
char *ori = *(char **)((char *)blk-sizeof(size_t)-sizeof(char *));
size_t bytes = *(size_t *)((char *)blk-sizeof(size_t));
freebytes(ori,bytes);
}
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