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basics.h

/*
      basics.h
      
      Copyright 2004-5 Tim Goetze <tim@quitte.de>
      
      http://quitte.de/dsp/

      common constants, typedefs, utility functions 
      and simplified LADSPA #defines.

*/
/*
      This program 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 2
      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, write to the Free Software
      Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
      02111-1307, USA or point your web browser to http://www.gnu.org.
*/

#ifndef _BASICS_H_
#define _BASICS_H_

#define _GNU_SOURCE 1
#define _USE_GNU 1

/* gcc protects a lot of standard math calls. */
#define __USE_ISOC99 1
#define __USE_ISOC9X 1
#define _ISOC99_SOURCE 1
#define _ISOC9X_SOURCE 1

#include <stdlib.h>
#include <string.h>

#include <math.h>

#include <assert.h>
#include <stdio.h>

#include "ladspa.h"

#define BOUNDED (LADSPA_HINT_BOUNDED_BELOW | LADSPA_HINT_BOUNDED_ABOVE)
#define INTEGER LADSPA_HINT_INTEGER
#define FS LADSPA_HINT_SAMPLE_RATE
#define LOG LADSPA_HINT_LOGARITHMIC
#define TOGGLE LADSPA_HINT_TOGGLED

#define DEFAULT_0 LADSPA_HINT_DEFAULT_0
#define DEFAULT_1 LADSPA_HINT_DEFAULT_1
#define DEFAULT_100 LADSPA_HINT_DEFAULT_100
#define DEFAULT_440 LADSPA_HINT_DEFAULT_440
#define DEFAULT_MIN LADSPA_HINT_DEFAULT_MINIMUM
#define DEFAULT_LOW LADSPA_HINT_DEFAULT_LOW
#define DEFAULT_MID LADSPA_HINT_DEFAULT_MIDDLE
#define DEFAULT_HIGH LADSPA_HINT_DEFAULT_HIGH
#define DEFAULT_MAX LADSPA_HINT_DEFAULT_MAXIMUM

#define INPUT LADSPA_PORT_INPUT
#define OUTPUT LADSPA_PORT_OUTPUT
#define AUDIO LADSPA_PORT_AUDIO
#define CONTROL LADSPA_PORT_CONTROL

#define HARD_RT LADSPA_PROPERTY_HARD_RT_CAPABLE

#define TEN_TO_THE_SIXTH 1000000

#define MIN_GAIN .000001 /* -120 dB */
#define NOISE_FLOOR .00000000000005 /* -266 dB */

typedef __int8_t              int8;
typedef __uint8_t             uint8;
typedef __int16_t             int16;
typedef __uint16_t            uint16;
typedef __int32_t             int32;
typedef __uint32_t            uint32;
typedef __int64_t             int64;
typedef __uint64_t            uint64;

typedef struct {
      char * name;
      LADSPA_PortDescriptor descriptor;
      LADSPA_PortRangeHint range;
} PortInfo;

typedef LADSPA_Data d_sample;
typedef double d_float;
typedef unsigned long ulong;

/* flavours for sample store functions run() and run_adding() */
typedef void (*sample_func_t) (d_sample *, int, d_sample, d_sample);

inline void
store_func (d_sample * s, int i, d_sample x, d_sample gain)
{
      s[i] = x;
}

inline void
adding_func (d_sample * s, int i, d_sample x, d_sample gain)
{
      s[i] += gain * x;
}

#ifndef max

template <class X, class Y>
X min (X x, Y y)
{
      return x < y ? x : (X) y;
}

template <class X, class Y>
X max (X x, Y y)
{
      return x > y ? x : (X) y;
}

#endif /* ! max */
      
static inline float
frandom()
{
      return (float) random() / (float) RAND_MAX;
}

#endif /* _BASICS_H_ */

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