git.cworth.org Git - scherzo/blob - pitch.h

   1 /* scherzo - Music notation training
   2  *
   3  *      pitch.h - Common structures and functions for pitches, etc.
   4  *
   5  * Copyright © 2010,2013 Carl Worth
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  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 for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see http://www.gnu.org/licenses/ .
  19  */
  20
  21 #define PITCH_ACCIDENTAL_MASK 0x07
  22 #define PITCH_ACCIDENTAL_SHIFT 0
  23
  24 typedef enum pitch_accidental
  25 {
  26     PITCH_ACCIDENTAL_DOUBLE_FLAT,
  27     PITCH_ACCIDENTAL_FLAT,
  28     PITCH_ACCIDENTAL_NATURAL,
  29     PITCH_ACCIDENTAL_SHARP,
  30     PITCH_ACCIDENTAL_DOUBLE_SHARP
  31 } pitch_accidental_t;
  32
  33 #define PITCH_ACCIDENTAL(pitch) (((pitch) & PITCH_ACCIDENTAL_MASK) >> PITCH_ACCIDENTAL_SHIFT)
  34
  35 #define PITCH_NAME_MASK 0x38
  36 #define PITCH_NAME_SHIFT 3
  37
  38 typedef enum pitch_name
  39 {
  40     PITCH_NAME_C,
  41     PITCH_NAME_D,
  42     PITCH_NAME_E,
  43     PITCH_NAME_F,
  44     PITCH_NAME_G,
  45     PITCH_NAME_A,
  46     PITCH_NAME_B,
  47 } pitch_name_t;
  48
  49 #define PITCH_NAME(pitch) (((pitch) & PITCH_NAME_MASK) >> PITCH_NAME_SHIFT)
  50
  51 #define PITCH(name, accidental) (((name) << PITCH_NAME_SHIFT) | (accidental))
  52
  53 #define PITCH_LITERAL(literal_name, literal_accidental) PITCH(PITCH_NAME_##literal_name, PITCH_ACCIDENTAL_##literal_accidental)
  54
  55 typedef enum pitch
  56 {
  57     PITCH_Cff = PITCH_LITERAL (C, DOUBLE_FLAT),
  58     PITCH_Cf  = PITCH_LITERAL (C, FLAT),
  59     PITCH_C   = PITCH_LITERAL (C, NATURAL),
  60     PITCH_Cs  = PITCH_LITERAL (C, SHARP),
  61     PITCH_Css = PITCH_LITERAL (C, DOUBLE_SHARP),
  62
  63     PITCH_Dff = PITCH_LITERAL (D, DOUBLE_FLAT),
  64     PITCH_Df  = PITCH_LITERAL (D, FLAT),
  65     PITCH_D   = PITCH_LITERAL (D, NATURAL),
  66     PITCH_Ds  = PITCH_LITERAL (D, SHARP),
  67     PITCH_Dss = PITCH_LITERAL (D, DOUBLE_SHARP),
  68
  69     PITCH_Eff = PITCH_LITERAL (E, DOUBLE_FLAT),
  70     PITCH_Ef  = PITCH_LITERAL (E, FLAT),
  71     PITCH_E   = PITCH_LITERAL (E, NATURAL),
  72     PITCH_Es  = PITCH_LITERAL (E, SHARP),
  73     PITCH_Ess = PITCH_LITERAL (E, DOUBLE_SHARP),
  74
  75     PITCH_Fff = PITCH_LITERAL (F, DOUBLE_FLAT),
  76     PITCH_Ff  = PITCH_LITERAL (F, FLAT),
  77     PITCH_F   = PITCH_LITERAL (F, NATURAL),
  78     PITCH_Fs  = PITCH_LITERAL (F, SHARP),
  79     PITCH_Fss = PITCH_LITERAL (F, DOUBLE_SHARP),
  80
  81     PITCH_Gff = PITCH_LITERAL (G, DOUBLE_FLAT),
  82     PITCH_Gf  = PITCH_LITERAL (G, FLAT),
  83     PITCH_G   = PITCH_LITERAL (G, NATURAL),
  84     PITCH_Gs  = PITCH_LITERAL (G, SHARP),
  85     PITCH_Gss = PITCH_LITERAL (G, DOUBLE_SHARP),
  86
  87     PITCH_Aff = PITCH_LITERAL (A, DOUBLE_FLAT),
  88     PITCH_Af  = PITCH_LITERAL (A, FLAT),
  89     PITCH_A   = PITCH_LITERAL (A, NATURAL),
  90     PITCH_As  = PITCH_LITERAL (A, SHARP),
  91     PITCH_Ass = PITCH_LITERAL (A, DOUBLE_SHARP),
  92
  93     PITCH_Bff = PITCH_LITERAL (B, DOUBLE_FLAT),
  94     PITCH_Bf  = PITCH_LITERAL (B, FLAT),
  95     PITCH_B   = PITCH_LITERAL (B, NATURAL),
  96     PITCH_Bs  = PITCH_LITERAL (B, SHARP),
  97     PITCH_Bss = PITCH_LITERAL (B, DOUBLE_SHARP)
  98 } pitch_t;