| 1 | //midi.h: |
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| 2 | |
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| 3 | /* |
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| 4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - August 2008 |
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| 5 | * |
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| 6 | * This file is part of libroardsp a part of RoarAudio, |
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| 7 | * a cross-platform sound system for both, home and professional use. |
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| 8 | * See README for details. |
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| 9 | * |
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| 10 | * This file is free software; you can redistribute it and/or modify |
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| 11 | * it under the terms of the GNU General Public License version 3 |
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| 12 | * as published by the Free Software Foundation. |
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| 13 | * |
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| 14 | * libroardsp is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this software; see the file COPYING. If not, write to |
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| 21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 22 | * |
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| 23 | */ |
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| 24 | |
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| 25 | #ifndef _LIBROARMIDI_H_ |
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| 26 | #define _LIBROARMIDI_H_ |
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| 27 | |
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| 28 | #include "libroardsp.h" |
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| 29 | #include <math.h> |
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| 30 | |
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| 31 | #define ROAR_MIDI_NOTE_NONE -1 |
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| 32 | |
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| 33 | #define ROAR_MIDI_NOTE_C 26162 |
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| 34 | #define ROAR_MIDI_NOTE_Cs 27718 |
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| 35 | #define ROAR_MIDI_NOTE_D 29366 |
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| 36 | #define ROAR_MIDI_NOTE_Ds 31112 |
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| 37 | #define ROAR_MIDI_NOTE_E 32962 |
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| 38 | #define ROAR_MIDI_NOTE_F 34922 |
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| 39 | #define ROAR_MIDI_NOTE_Fs 36999 |
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| 40 | #define ROAR_MIDI_NOTE_G 39199 |
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| 41 | #define ROAR_MIDI_NOTE_Gs 41530 |
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| 42 | #define ROAR_MIDI_NOTE_A 44000 |
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| 43 | #define ROAR_MIDI_NOTE_As 46616 |
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| 44 | #define ROAR_MIDI_NOTE_B 49388 |
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| 45 | |
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| 46 | #define ROAR_MIDI_MAX_NOTENAME_LEN (1+8) |
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| 47 | |
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| 48 | #define ROAR_MIDI_TYPE_SINE 1 |
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| 49 | |
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| 50 | struct roar_midi_len { |
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| 51 | int mul; |
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| 52 | int div; |
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| 53 | }; |
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| 54 | |
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| 55 | struct roar_note_octave { |
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| 56 | uint16_t note; |
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| 57 | char name[ROAR_MIDI_MAX_NOTENAME_LEN+1]; |
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| 58 | int octave; |
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| 59 | float freq; |
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| 60 | struct roar_midi_len len; |
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| 61 | }; |
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| 62 | |
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| 63 | |
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| 64 | struct roar_midi_basic_state { |
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| 65 | struct roar_midi_len len; |
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| 66 | struct roar_note_octave note; |
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| 67 | }; |
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| 68 | |
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| 69 | char * roar_midi_note2name (uint16_t note); |
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| 70 | uint16_t roar_midi_name2note (char * note); |
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| 71 | float roar_midi_note2freq (uint16_t note); |
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| 72 | |
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| 73 | //int roar_midi_free_no (struct roar_note_octave * note); |
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| 74 | |
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| 75 | int roar_midi_find_octave (char * note); |
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| 76 | int roar_midi_add_octave (struct roar_note_octave * note); |
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| 77 | int roar_midi_notefill (struct roar_note_octave * note); |
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| 78 | |
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| 79 | int roar_midi_gen_tone (struct roar_note_octave * note, int16_t * samples, float t, int rate, int channels, int type, void * opts); |
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| 80 | |
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| 81 | |
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| 82 | int roar_midi_play_note (struct roar_stream * stream, struct roar_note_octave * note, float len); |
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| 83 | |
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| 84 | int roar_midi_basic_init (struct roar_midi_basic_state * state); |
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| 85 | int roar_midi_basic_play (struct roar_stream * stream, struct roar_midi_basic_state * state, char * notes); |
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| 86 | |
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| 87 | #endif |
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| 88 | |
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| 89 | //ll |
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