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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 Stepan Moskovchenko
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#define FRACTSIZE 10
#define BUF_SIZE 256
#define NBUF 2
#ifndef SIMULATOR
#if (HW_SAMPR_CAPS & SAMPR_CAP_22)
#define SAMPLE_RATE SAMPR_22 // 44100 22050 11025
#else
#define SAMPLE_RATE SAMPR_44 // 44100 22050 11025
#endif
#define MAX_VOICES 23 // Note: 24 midi channels is the minimum general midi
// spec implementation
#else // Simulator requires 44100, and we can afford to use more voices
#define SAMPLE_RATE SAMPR_44
#define MAX_VOICES 48
#endif
#define BYTE unsigned char
//Data chunk ID types, returned by readID()
#define ID_UNKNOWN -1
#define ID_MTHD 1
#define ID_MTRK 2
#define ID_EOF 3
#define ID_RIFF 4
//MIDI Commands
#define MIDI_NOTE_OFF 128
#define MIDI_NOTE_ON 144
#define MIDI_AFTERTOUCH 160
#define MIDI_CONTROL 176
#define MIDI_PRGM 192
#define MIDI_PITCHW 224
//MIDI Controllers
#define CTRL_VOLUME 7
#define CTRL_BALANCE 8
#define CTRL_PANNING 10
#define CHANNEL 1
//Most of these are deprecated.. rampdown is used, maybe one other one too
#define STATE_ATTACK 1
#define STATE_DECAY 2
#define STATE_SUSTAIN 3
#define STATE_RELEASE 4
#define STATE_RAMPDOWN 5
//Loop states
#define STATE_LOOPING 7
#define STATE_NONLOOPING 8
//Various bits in the GUS mode byte
#define LOOP_ENABLED 4
#define LOOP_PINGPONG 8
#define LOOP_REVERSE 16
#define LOOPDIR_FORWARD 0
#define LOOPDIR_REVERSE 1
struct MIDIfile
{
int Length;
unsigned short numTracks;
unsigned short div; /* Time division, X ticks per millisecond */
struct Track * tracks[48];
unsigned char patches[128];
int numPatches;
};
/*
struct SynthObject
{
struct GWaveform * wf;
unsigned int delta;
unsigned int decay;
unsigned int cp;
unsigned char state, loopState, loopDir;
unsigned char note, vol, ch, isUsed;
int curRate, curOffset, targetOffset;
unsigned int curPoint;
};
*/
struct SynthObject
{
struct GWaveform * wf;
int delta;
int decay;
unsigned int cp; /* unsigned int */
int state, loopState, loopDir;
int note, vol, ch, isUsed;
int curRate, curOffset, targetOffset;
int curPoint;
signed short int volscale;
};
struct Event
{
unsigned int delta;
unsigned char status, d1, d2;
unsigned int len;
unsigned char * evData;
};
struct Track
{
unsigned int size;
unsigned int numEvents;
unsigned int delta; /* For sequencing */
unsigned int pos; /* For sequencing */
void * dataBlock;
};
int printf(const char *fmt, ...);
int midimain(void * filename);
unsigned char readChar(int file);
inline void setPoint(struct SynthObject * so, int pt);
int readTwoBytes(int file);
int readFourBytes(int file);
int readVarData(int file);
int eof(int fd);
unsigned char * readData(int file, int len);
void exit(int code);
#define malloc(n) my_malloc(n)
void * my_malloc(int size);
extern struct SynthObject voices[MAX_VOICES];
extern int chVol[16]; /* Channel volume */
extern int chPanLeft[16]; /* Channel panning */
extern int chPanRight[16];
extern int chPat[16]; /* Channel patch */
extern int chPW[16]; /* Channel pitch wheel, MSB only */
extern struct GPatch * gusload(char *);
extern struct GPatch * patchSet[128];
extern struct GPatch * drumSet[128];
extern struct MIDIfile * mf;
extern int numberOfSamples;
extern long bpm;
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