envelope_parameters.h

   1 /*
   2   ZynAddSubFX - a software synthesizer
   3
   4   EnvelopeParams.h - Parameters for Envelope
   5   Copyright (C) 2002-2005 Nasca Octavian Paul
   6   Author: Nasca Octavian Paul
   7
   8   This program is free software; you can redistribute it and/or modify
   9   it under the terms of version 2 of the GNU General Public License
  10   as published by the Free Software Foundation.
  11
  12   This program is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License (version 2) for more details.
  16
  17   You should have received a copy of the GNU General Public License (version 2)
  18   along with this program; if not, write to the Free Software Foundation,
  19   Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20
  21 */
  22
  23 #ifndef ENVELOPE_PARAMS_H
  24 #define ENVELOPE_PARAMS_H
  25
  26 #define MAX_ENVELOPE_POINTS 40
  27 #define MIN_ENVELOPE_DB -40
  28
  29 #define ZYN_ENVELOPE_MODE_ADSR         1 // ADSR parameters (linear amplitude)
  30 #define ZYN_ENVELOPE_MODE_ADSR_DB      2 // ADSR_dB parameters (dB amplitude)
  31 #define ZYN_ENVELOPE_MODE_ASR          3 // ASR parameters (frequency LFO)
  32 #define ZYN_ENVELOPE_MODE_ADSR_FILTER  4 // ADSR_filter parameters (filter parameters)
  33 #define ZYN_ENVELOPE_MODE_ASR_BW       5 // ASR_bw parameters (bandwidth parameters)
  34
  35 class EnvelopeParams
  36 {
  37 public:
  38   EnvelopeParams();
  39   ~EnvelopeParams();
  40
  41   void
  42   init_adsr(
  43     unsigned char stretch,
  44     bool forced_release,
  45     char attack_duration,
  46     char decay_duration,
  47     char sustain_value,
  48     char release_duration,
  49     bool linear);
  50
  51   void
  52   init_asr(
  53     unsigned char stretch,
  54     bool forced_release,
  55     char attack_value,
  56     char attack_duration,
  57     char release_value,
  58     char release_duration);
  59
  60   void
  61   init_adsr_filter(
  62     unsigned char stretch,
  63     bool forced_release,
  64     char attack_value,
  65     char attack_duration,
  66     char decay_value,
  67     char decay_duration,
  68     char release_duration,
  69     char release_value);
  70
  71   void
  72   init_asr_bw(
  73     unsigned char stretch,
  74     bool forced_release,
  75     char attack_value,
  76     char attack_duration,
  77     char release_value,
  78     char release_duration);
  79
  80   unsigned char
  81   get_value(
  82     int index);
  83
  84   void
  85   set_value(
  86     int index,
  87     unsigned char value);
  88
  89   unsigned char
  90   get_duration(
  91     int index);
  92
  93   void
  94   set_duration(
  95     int index,
  96     unsigned char duration);
  97
  98   REALTYPE getdt(unsigned char i);
  99   void set_point_value(int i, unsigned char value);
 100
 101   unsigned char Penvpoints;
 102   unsigned char Penvsustain;    // 127 pentru dezactivat
 103   unsigned char Penvdt[MAX_ENVELOPE_POINTS];
 104   float m_values[MAX_ENVELOPE_POINTS];
 105   unsigned char m_values_params[MAX_ENVELOPE_POINTS];
 106
 107   // 0 = no stretch
 108   // 64 = normal stretch (piano-like)
 109   // 127 = 200% = envelope is stretched about 4 times/octave
 110   unsigned char m_stretch;
 111
 112   bool m_forced_release;
 113
 114   bool m_linear; // if the amplitude envelope is linear
 115
 116   unsigned int m_mode;          // one of ZYN_ENVELOPE_MODE_XXX
 117
 118   int m_attack_duration_index;
 119   int m_decay_duration_index;
 120   int m_release_duration_index;
 121
 122   int m_attack_value_index;
 123   int m_decay_value_index;
 124   int m_sustain_value_index;
 125   int m_release_value_index;
 126 };
 127
 128 #endif