[foo-cvs] foo/libfoo/modules/banff FOOMAllpass.h,NONE,1.1 FOOMAllpass.m,NONE,1.1 FOOMComb.h,NONE,1.1 FOOMComb.m,NONE,1.1 Makefile.am,NONE,1.1

[Martin R. <ru...@us...>]

Update of /cvsroot/foo/foo/libfoo/modules/banff
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv27918

Added Files:
	FOOMAllpass.h FOOMAllpass.m FOOMComb.h FOOMComb.m Makefile.am 
Log Message:
added experimental modules

--- NEW FILE: FOOMAllpass.h ---
/* -*-Mode:objc-*- */

/*
 * FOOMAllpass.h
 *
 * allpass module
 *
 */

/*
 * foo sound synthesis system
 *
 * (C)1993-2004 Gerhard Eckel, Ramon Gonzalez-Arroyo, IRCAM, ZKM
 * (C)2003-2004 Martin Rumori
 */

/*
 * This file is part of foo.
 *
 * foo is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * foo 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with foo; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: FOOMAllpass.h,v 1.1 2004/08/26 09:50:22 rumori Exp $ */

#ifndef FOOM_FOOMALLPASS_H_INCLUDED
#define FOOM_FOOMALLPASS_H_INCLUDED

#include <FOO/FOOModule.h>

@interface FOOMAllpass : FOOModule <NSCoding>
{
  int _order;
  sample_t *_states;
}

- (id) initWithOrder: (int)order;

@end

#endif /* #ifndef FOOM_FOOMALLPASS_H_INCLUDED */

--- NEW FILE: Makefile.am ---
# foo/libfoo/modules/banff/Makefile.am
# 2004 rumori

# $Id: Makefile.am,v 1.1 2004/08/26 09:50:22 rumori Exp $

noinst_LTLIBRARIES = libfoombanff.la

NULL = 

libfoombanff_la_SOURCES = \
	FOOMAllpass.h \
	FOOMAllpass.m \
	FOOMComb.h \
	FOOMComb.m \
	$(NULL)

if USE_GNUSTEP_BASE
include @GNUSTEP_MAKEFILES@/library-combo.make
include @GNUSTEP_MAKEFILES@/common.make
include @GNUSTEP_MAKEFILES@/Additional/base.make
endif

FOO_CFLAGS = @FOO_CFLAGS@
FOO_OBJCFLAGS = @FOO_OBJCFLAGS@ @FOO_GNUSTEP_OBJCFLAGS@
FOO_LDFLAGS = @FOO_LDFLAGS@ @FOO_GNUSTEP_LDFLAGS@
FOO_LIBS = @FOO_LIBS@

libfoombanff_la_CFLAGS =	$(FOO_CFLAGS)
libfoombanff_la_OBJCFLAGS =	$(FOO_OBJCFLAGS) \
				$(FND_DEFINE)
libfoombanff_la_LIBADD =	-lm

--- NEW FILE: FOOMComb.m ---
/* -*-Mode:objc-*- */

/*
 * FOOMComb.m
 *
 * feedback delay line
 *
 */

/*
 * foo sound synthesis system
 *
 * (C)1993-2004 Gerhard Eckel, Ramon Gonzalez-Arroyo, IRCAM, ZKM
 * (C)2003-2004 Martin Rumori
 */

/*
 * This file is part of foo.
 *
 * foo is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * foo 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with foo; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: FOOMComb.m,v 1.1 2004/08/26 09:50:22 rumori Exp $ */

#include "FOOMComb.h"


@implementation FOOMComb


- (id) initWithTaps: (int)taps maxDelay: (double)maxDelay
{
  _taps = taps;
  _table = [FOOGlobalsManager getSineXoverXTable: _taps];
  _line = NULL;
  _maxDelayT = maxDelay;

  return self;
}


- (void) dealloc
{
  NSZoneFree([self zone], _line);
  _line = NULL;

  [super dealloc];
}


- reset
{
  [super reset];

  if (_line)
    {
      NSZoneFree([self zone], _line);
      _line = NULL;
    }
  _ptr = 0;

  return self;
}


- startUp
{
  [super startUp];

  _maxDelay = SEC_TO_SAM(_maxDelayT);
  _line = NSZoneCalloc([self zone], _maxDelay, sizeof(sample_t));
  _ptr = 0;

  return self;
}


- (BOOL) activate
{
//   if (INPUTS < 2 || [INPUT(0) activate] == NO || [INPUT(1) activate] == NO)
//     {
//       _active = NO;
//     }
//   else
//     {
//       _active = YES;
//     }

  // take feedback in account
  [INPUT(0) activate];
  [INPUT(1) activate];
  [INPUT(2) activate];
  [INPUT(3) activate];

  return (_active = YES);
}


- (BOOL) compute
{
  FOOModule *m0, *m1, *m2, *m3;
  sample_t *input, *delay, *feedback, *wetdry, *output;
  int i, n, dpos, ipos;
  double tap, sr, fpos, fti, tdelta;
  int tot, tinc, ti1, ti2; // total of taps, tap increment
  sample_t *base, *delta; // lookup table, delta table

  COMPUTE_PROLOGUE;
  m0 = INPUT(0);
  m1 = INPUT(1);
  m2 = INPUT(2);
  m3 = INPUT(3);
  [m0 compute];
  [m1 compute];
  [m2 compute];
  [m3 compute];
  input = DATA_OF_MOD(m0);
  delay = DATA_OF_MOD(m1);
  feedback = DATA_OF_MOD(m2);
  wetdry = DATA_OF_MOD(m3);
  output = DATA_OF_BUF(_buffer);
  n  = BLOCKSIZE;
  sr = SAMPLERATE;

  tot = _taps / 2;
  tinc = [_table getSize] / tot;
  base = [_table getBase];
  delta = [_table getDelta];

  while (n--)
    {
      // interpolate
      tap = 0;
      fpos = *delay++ * sr;
      ipos = (int)fpos;

      // shorter delay than samples for interpolation?
      if (ipos < tot)
	{
	  FOO_ERROR(NO, YES);
	  ipos = tot;
	}

      fti = (fpos - ipos) * tinc;
      ti1 = (int)fti;
      ti2 = tinc - ti1 - 1;
      tdelta = fti - ti1;

      dpos = _ptr + ipos;
      while (dpos > _maxDelay - 1)
	{ // wrap around
	  dpos -= _maxDelay;
	}

      for (i = tot; i > 0; --i, ti1 += tinc)
	{
	  tap += _line[dpos--] * (base[ti1] + delta[ti1] * tdelta);

	  if (dpos < 0)
	    {
	      dpos = _maxDelay - 1;
	    }
	}

      tdelta = 1 - tdelta;
      dpos = _ptr + ipos + 1;

      while (dpos > _maxDelay - 1)
	{ // wrap around
	  dpos -= _maxDelay;
	}
						
      for (i = tot; i > 0; --i, ti2 += tinc)
	{
	  tap += _line[dpos++] * (base[ti2] + delta[ti2] * tdelta);

	  if (dpos > _maxDelay - 1)
	    {
	      dpos = 0;
	    }
	}

      // copy + feedback to delay line
      _line[_ptr] = tap * *feedback++ + *input;
      --_ptr;

      if (_ptr < 0)
	{ // wrap around
	  _ptr = _maxDelay - 1;
	}

      // output
      *output++ = *wetdry * tap + (1 - *wetdry) * *input++;
      ++wetdry;
    }
  COMPUTE_EPILOGUE;
}


/*
 * archiving methods
 */

- (void) encodeWithCoder: (NSCoder *)coder
{
  [super encodeWithCoder: coder];

  return;
}


- (id) initWithCoder: (NSCoder *)coder
{
  self = [super initWithCoder: coder];

  return self;
}

@end

--- NEW FILE: FOOMComb.h ---
/* -*-Mode:objc-*- */

/*
 * FOOMComb.h
 *
 * feedback delay line
 *
 */

/*
 * foo sound synthesis system
 *
 * (C)1993-2004 Gerhard Eckel, Ramon Gonzalez-Arroyo, IRCAM, ZKM
 * (C)2003-2004 Martin Rumori
 */

/*
 * This file is part of foo.
 *
 * foo is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * foo 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with foo; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: FOOMComb.h,v 1.1 2004/08/26 09:50:22 rumori Exp $ */

#ifndef FOOM_FOOMCOMB_H_INCLUDED
#define FOOM_FOOMCOMB_H_INCLUDED

#include <FOO/FOOModule.h>
#include <FOO/FOOLookupTable.h>


@interface FOOMComb : FOOModule <NSCoding>
{
  int _maxDelay;	// maximum delay in samples = size of delay line
  double _maxDelayT;	// maximum delay in seconds
  sample_t *_line;	// delay line
  int _ptr;		// write index in delay line
  int _taps;		// num of taps for resampling
  FOOLookupTable *_table; // sinc table for resampling
}

- (id) initWithTaps: (int)taps maxDelay: (double)maxDelay;

@end

#endif /* #ifndef FOOM_FOOMALLPASS_H_INCLUDED */

--- NEW FILE: FOOMAllpass.m ---
/* -*-Mode:objc-*- */

/*
 * FOOMAllpass.m
 *
 * module allpass
 *
 */

/*
 * foo sound synthesis system
 *
 * (C)1993-2004 Gerhard Eckel, Ramon Gonzalez-Arroyo, IRCAM, ZKM
 * (C)2003-2004 Martin Rumori
 */

/*
 * This file is part of foo.
 *
 * foo is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * foo 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with foo; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

/* $Id: FOOMAllpass.m,v 1.1 2004/08/26 09:50:22 rumori Exp $ */

#include "FOOMAllpass.h"


@implementation FOOMAllpass


- (id) initWithOrder: (int)order
{
  _order = order;
  _states = NSZoneCalloc([self zone], order + 1, sizeof(sample_t));

  return self;
}


- (void) dealloc
{
  NSZoneFree([self zone], _states);

  [super dealloc];
}


- (BOOL) activate
{
//   if (INPUTS < 2 || [INPUT(0) activate] == NO || [INPUT(1) activate] == NO)
//     {
//       _active = NO;
//     }
//   else
//     {
//       _active = YES;
//     }

  // take feedback in account
  [INPUT(0) activate];
  [INPUT(1) activate];
  _active = YES;

  return _active;
}


- (BOOL) compute
{
  FOOModule *m, *r;
  int j, n;
  sample_t last, tmp, *out, *in, *rho;
    
  COMPUTE_PROLOGUE;
  m = INPUT(0);
  r = INPUT(1);
  [m compute];
  [r compute];
  in = DATA_OF_MOD(m);
  rho = DATA_OF_MOD(r);
  out = DATA_OF_BUF(_buffer);
  n  = BLOCKSIZE;

  while (n--)
    {
      // first in chain
      tmp = _states[0];
      _states[0] = *in++;

      for (j = 1; j <= _order; ++j)
  	{
  	  last = tmp;
 	  tmp = _states[j];
  	  _states[j] = *rho * (_states[j] - _states[j - 1]) + last;
  	}

      // last in chain
      *out++ = _states[_order];
      rho++;
    }
  COMPUTE_EPILOGUE;
}


- (int) incrementBuffer
{
    return 0;
}


/*
 * archiving methods
 */

- (void) encodeWithCoder: (NSCoder *)coder
{
  [super encodeWithCoder: coder];

  if ([coder allowsKeyedCoding])
    {
      [coder encodeInt: _order forKey: @"FOOMAllpass:order"];
    }
  else
    {
      [coder encodeValueOfObjCType: @encode(int) at: &_order];
    }

  return;
}


- (id) initWithCoder: (NSCoder *)coder
{
  self = [super initWithCoder: coder];

  if ([coder allowsKeyedCoding])
    {
      _order = [coder decodeIntForKey: @"FOOMAllpass:order"];
    }
  else
    {
      [coder decodeValueOfObjCType: @encode(int) at: &_order];
    }

  _states = NSZoneCalloc([self zone], _order + 1, sizeof(sample_t));

  return self;
}

@end