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114 lines
3 KiB
C
114 lines
3 KiB
C
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/*
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TiMidity -- Experimental MIDI to WAVE converter
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Copyright (C) 1995 Tuukka Toivonen <toivonen@clinet.fi>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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playmidi.h
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*/
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#include "structs.h"
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/* Midi events */
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#define ME_NONE 0
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#define ME_NOTEON 1
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#define ME_NOTEOFF 2
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#define ME_KEYPRESSURE 3
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#define ME_MAINVOLUME 4
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#define ME_PAN 5
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#define ME_SUSTAIN 6
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#define ME_EXPRESSION 7
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#define ME_PITCHWHEEL 8
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#define ME_PROGRAM 9
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#define ME_TEMPO 10
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#define ME_PITCH_SENS 11
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#define ME_ALL_SOUNDS_OFF 12
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#define ME_RESET_CONTROLLERS 13
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#define ME_ALL_NOTES_OFF 14
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#define ME_TONE_BANK 15
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#define ME_LYRIC 16
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#define ME_EOT 99
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typedef struct {
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int
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bank, program, volume, sustain, panning, pitchbend, expression,
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mono, /* one note only on this channel -- not implemented yet */
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pitchsens;
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/* chorus, reverb... Coming soon to a 300-MHz, eight-way superscalar
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processor near you */
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float
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pitchfactor; /* precomputed pitch bend factor to save some fdiv's */
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} Channel;
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/* Causes the instrument's default panning to be used. */
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#define NO_PANNING -1
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typedef struct {
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uint8_t
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status, channel, note, velocity;
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Sample *sample;
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int32_t
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orig_frequency, frequency,
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sample_offset, sample_increment,
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envelope_volume, envelope_target, envelope_increment,
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tremolo_sweep, tremolo_sweep_position,
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tremolo_phase, tremolo_phase_increment,
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vibrato_sweep, vibrato_sweep_position;
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final_volume_t left_mix, right_mix;
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float
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left_amp, right_amp, tremolo_volume;
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int32_t
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vibrato_sample_increment[VIBRATO_SAMPLE_INCREMENTS];
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int
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vibrato_phase, vibrato_control_ratio, vibrato_control_counter,
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envelope_stage, control_counter, panning, panned;
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} Voice;
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/* Voice status options: */
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#define VOICE_FREE 0
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#define VOICE_ON 1
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#define VOICE_SUSTAINED 2
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#define VOICE_OFF 3
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#define VOICE_DIE 4
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/* Voice panned options: */
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#define PANNED_MYSTERY 0
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#define PANNED_LEFT 1
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#define PANNED_RIGHT 2
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#define PANNED_CENTER 3
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/* Anything but PANNED_MYSTERY only uses the left volume */
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extern Channel channel[16];
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extern Voice voice[MAX_VOICES];
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extern int32_t control_ratio, amp_with_poly, amplification;
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extern int32_t drumchannels;
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extern int adjust_panning_immediately;
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extern int voices;
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#define ISDRUMCHANNEL(c) ((drumchannels & (1<<(c))))
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extern int play_midi(MidiEvent *el, int32_t events, int32_t samples);
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extern int play_midi_file(char *fn);
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extern void dumb_pass_playing_list(int number_of_files, char *list_of_files[]);
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