raze-gles/polymer/eduke32/source/_midi.h

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//-------------------------------------------------------------------------
/*
Copyright (C) 2016 EDuke32 developers and contributors
This file is part of EDuke32.
EDuke32 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
//-------------------------------------------------------------------------
#ifndef ___MIDI_H
#define ___MIDI_H
#include "compat.h"
#define RELATIVE_BEAT( measure, beat, tick ) \
( ( tick ) + ( ( beat ) << 9 ) + ( ( measure ) << 16 ) )
//Bobby Prince thinks this may be 100
//#define GENMIDI_DefaultVolume 100
#define GENMIDI_DefaultVolume 90
#define MAX_FORMAT 1
#define NUM_MIDI_CHANNELS 16
#define TIME_PRECISION 16
#define MIDI_HEADER_SIGNATURE 0x6468544d // "MThd"
#define MIDI_TRACK_SIGNATURE 0x6b72544d // "MTrk"
#define MIDI_VOLUME 7
#define MIDI_PAN 10
#define MIDI_DETUNE 94
#define MIDI_RHYTHM_CHANNEL 9
#define MIDI_RPN_MSB 100
#define MIDI_RPN_LSB 101
#define MIDI_DATAENTRY_MSB 6
#define MIDI_DATAENTRY_LSB 38
#define MIDI_PITCHBEND_MSB 0
#define MIDI_PITCHBEND_LSB 0
#define MIDI_RUNNING_STATUS 0x80
#define MIDI_NOTE_OFF 0x8
#define MIDI_NOTE_ON 0x9
#define MIDI_POLY_AFTER_TCH 0xA
#define MIDI_CONTROL_CHANGE 0xB
#define MIDI_PROGRAM_CHANGE 0xC
#define MIDI_AFTER_TOUCH 0xD
#define MIDI_PITCH_BEND 0xE
#define MIDI_SPECIAL 0xF
#define MIDI_SYSEX 0xF0
#define MIDI_SYSEX_CONTINUE 0xF7
#define MIDI_META_EVENT 0xFF
#define MIDI_END_OF_TRACK 0x2F
#define MIDI_TEMPO_CHANGE 0x51
#define MIDI_TIME_SIGNATURE 0x58
#define MIDI_RESET_ALL_CONTROLLERS 0x79
#define MIDI_ALL_NOTES_OFF 0x7b
#define MIDI_MONO_MODE_ON 0x7E
#define MIDI_SYSTEM_RESET 0xFF
#define GET_NEXT_EVENT( track, data ) do { \
( data ) = *( track )->pos; \
( track )->pos += 1; \
} while (0)
#define GET_MIDI_CHANNEL( event ) ( ( event ) & 0xf )
#define GET_MIDI_COMMAND( event ) ( ( event ) >> 4 )
#define EMIDI_INFINITE -1
#define EMIDI_END_LOOP_VALUE 127
#define EMIDI_ALL_CARDS 127
#define EMIDI_INCLUDE_TRACK 110
#define EMIDI_EXCLUDE_TRACK 111
#define EMIDI_PROGRAM_CHANGE 112
#define EMIDI_VOLUME_CHANGE 113
#define EMIDI_CONTEXT_START 114
#define EMIDI_CONTEXT_END 115
#define EMIDI_LOOP_START 116
#define EMIDI_LOOP_END 117
#define EMIDI_SONG_LOOP_START 118
#define EMIDI_SONG_LOOP_END 119
#define EMIDI_GeneralMIDI 0
#define EMIDI_AffectsCurrentCard(c, type) (((c) == EMIDI_ALL_CARDS) || ((c) == (type)))
#define EMIDI_NUM_CONTEXTS 7
typedef struct
{
char *pos;
char *loopstart;
int16_t loopcount;
int16_t RunningStatus;
unsigned time;
int32_t FPSecondsPerTick;
int16_t tick;
int16_t beat;
int16_t measure;
int16_t BeatsPerMeasure;
int16_t TicksPerBeat;
int16_t TimeBase;
int32_t delay;
int16_t active;
} songcontext;
typedef struct
{
char *start;
char *pos;
int32_t delay;
int16_t active;
int16_t RunningStatus;
int16_t currentcontext;
songcontext context[EMIDI_NUM_CONTEXTS];
char EMIDI_IncludeTrack;
char EMIDI_ProgramChange;
char EMIDI_VolumeChange;
} track;
static int32_t _MIDI_ReadNumber(void *from, size_t size);
static int32_t _MIDI_ReadDelta(track *ptr);
static void _MIDI_ResetTracks(void);
static void _MIDI_AdvanceTick(void);
static void _MIDI_MetaEvent(track *Track);
static void _MIDI_SysEx(track *Track);
static int32_t _MIDI_InterpretControllerInfo(track *Track, int32_t TimeSet, int32_t channel, int32_t c1, int32_t c2);
static int32_t _MIDI_SendControlChange(int32_t channel, int32_t c1, int32_t c2);
static void _MIDI_SetChannelVolume(int32_t channel, int32_t volume);
static void _MIDI_SendChannelVolumes(void);
static void _MIDI_InitEMIDI(void);
#endif