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Banjo Kazooie
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/*====================================================================
* libaudio.h
*
* Copyright 1993, Silicon Graphics, Inc.
* All Rights Reserved.
*
* This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics,
* Inc.; the contents of this file may not be disclosed to third
* parties, copied or duplicated in any form, in whole or in part,
* without the prior written permission of Silicon Graphics, Inc.
*
* RESTRICTED RIGHTS LEGEND:
* Use, duplication or disclosure by the Government is subject to
* restrictions as set forth in subdivision (c)(1)(ii) of the Rights
* in Technical Data and Computer Software clause at DFARS
* 252.227-7013, and/or in similar or successor clauses in the FAR,
* DOD or NASA FAR Supplement. Unpublished - rights reserved under the
* Copyright Laws of the United States.
*====================================================================*/
/**************************************************************************
*
* $Revision: 1.173 $
* $Date: 1997/12/01 12:42:21 $
* $Source: /exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/libaudio.h,v $
*
**************************************************************************/
#ifndef __LIB_AUDIO__
#define __LIB_AUDIO__
#ifdef _LANGUAGE_C_PLUS_PLUS
extern "C" {
#endif
#include <PR/ultratypes.h>
#include <PR/mbi.h>
/***********************************************************************
* misc defines
***********************************************************************/
#ifndef _EMULATOR
# ifdef AUD_PROFILE
#define PROFILE_AUD(num, cnt, max, min) \
{ \
u32 currCnt = osGetCount(); \
currCnt -= lastCnt[cnt_index]; \
cnt_index--; \
cnt += currCnt; \
num++; \
\
if ( currCnt > max ) max = currCnt; \
if ( currCnt < min ) min = currCnt; \
}
# endif /* AUD_PROFILE */
#endif /* EMULATOR */
#ifndef NULL
#define NULL 0
#endif
#define AL_FX_BUFFER_SIZE 8192
#define AL_FRAME_INIT -1
#define AL_USEC_PER_FRAME 16000
#define AL_MAX_PRIORITY 127
#define AL_GAIN_CHANGE_TIME 1000
typedef s32 ALMicroTime;
typedef u8 ALPan;
#define AL_PAN_CENTER 64
#define AL_PAN_LEFT 0
#define AL_PAN_RIGHT 127
#define AL_VOL_FULL 127
#define AL_KEY_MIN 0
#define AL_KEY_MAX 127
#define AL_DEFAULT_FXMIX 0
#define AL_SUSTAIN 63
/***********************************************************************
* Error handling
***********************************************************************/
#ifdef _DEBUG
#define ALFailIf(condition, error) \
if (condition) { \
__osError(error, 0); \
return; }
#else
#define ALFailIf(condition, error) \
if (condition) { \
return; }
#endif
#ifdef _DEBUG
#define ALFlagFailIf(condition, flag, error) \
if (condition) { \
if(flag) __osError(error, 0); \
return; }
#else
#define ALFlagFailIf(condition, flag, error) \
if (condition) { \
return; }
#endif
/***********************************************************************
* Audio Library global routines
***********************************************************************/
typedef struct ALLink_s {
struct ALLink_s *next;
struct ALLink_s *prev;
} ALLink;
void alUnlink(ALLink *element);
void alLink(ALLink *element, ALLink *after);
typedef s32 (*ALDMAproc)(s32 addr, s32 len, void *state);
typedef ALDMAproc (*ALDMANew)(void *state);
void alCopy(void *src, void *dest, s32 len);
typedef struct {
u8 *base;
u8 *cur;
s32 len;
s32 count;
} ALHeap;
#define AL_HEAP_DEBUG 1
#define AL_HEAP_MAGIC 0x20736a73
#define AL_HEAP_INIT 0
void alHeapInit(ALHeap *hp, u8 *base, s32 len);
void *alHeapDBAlloc(u8 *file, s32 line, ALHeap *hp, s32 num, s32 size);
s32 alHeapCheck(ALHeap *hp);
#ifdef _DEBUG
#define alHeapAlloc(hp, elem ,size) alHeapDBAlloc((u8 *) __FILE__,__LINE__,(hp),(elem),(size))
#else
#define alHeapAlloc(hp, elem ,size) alHeapDBAlloc(0, 0,(hp),(elem),(size))
#endif
/***********************************************************************
* FX Stuff
***********************************************************************/
#define AL_FX_NONE 0
#define AL_FX_SMALLROOM 1
#define AL_FX_BIGROOM 2
#define AL_FX_CHORUS 3
#define AL_FX_FLANGE 4
#define AL_FX_ECHO 5
#define AL_FX_CUSTOM 6
typedef u8 ALFxId;
typedef void *ALFxRef;
/***********************************************************************
* data structures for sound banks
***********************************************************************/
#define AL_BANK_VERSION 0x4231 /* 'B1' */
/* Possible wavetable types */
enum {AL_ADPCM_WAVE = 0,
AL_RAW16_WAVE};
typedef struct {
s32 order;
s32 npredictors;
s16 book[1]; /* Actually variable size. Must be 8-byte aligned */
} ALADPCMBook;
typedef struct {
u32 start;
u32 end;
u32 count;
ADPCM_STATE state;
} ALADPCMloop;
typedef struct {
u32 start;
u32 end;
u32 count;
} ALRawLoop;
typedef struct {
ALMicroTime attackTime;
ALMicroTime decayTime;
ALMicroTime releaseTime;
u8 attackVolume;
u8 decayVolume;
} ALEnvelope;
typedef struct {
u8 velocityMin;
u8 velocityMax;
u8 keyMin;
u8 keyMax;
u8 keyBase;
s8 detune;
} ALKeyMap;
typedef struct {
ALADPCMloop *loop;
ALADPCMBook *book;
} ALADPCMWaveInfo;
typedef struct {
ALRawLoop *loop;
} ALRAWWaveInfo;
typedef struct ALWaveTable_s {
u8 *base; /* ptr to start of wave data */
s32 len; /* length of data in bytes */
u8 type; /* compression type */
u8 flags; /* offset/address flags */
union {
ALADPCMWaveInfo adpcmWave;
ALRAWWaveInfo rawWave;
} waveInfo;
} ALWaveTable;
typedef struct ALSound_s {
ALEnvelope *envelope;
ALKeyMap *keyMap;
ALWaveTable *wavetable; /* offset to wavetable struct */
ALPan samplePan;
u8 sampleVolume;
u8 flags;
} ALSound;
typedef struct {
u8 volume; /* overall volume for this instrument */
ALPan pan; /* 0 = hard left, 127 = hard right */
u8 priority; /* voice priority for this instrument */
u8 flags;
u8 tremType; /* the type of tremelo osc. to use */
u8 tremRate; /* the rate of the tremelo osc. */
u8 tremDepth; /* the depth of the tremelo osc */
u8 tremDelay; /* the delay for the tremelo osc */
u8 vibType; /* the type of tremelo osc. to use */
u8 vibRate; /* the rate of the tremelo osc. */
u8 vibDepth; /* the depth of the tremelo osc */
u8 vibDelay; /* the delay for the tremelo osc */
s16 bendRange; /* pitch bend range in cents */
s16 soundCount; /* number of sounds in this array */
ALSound *soundArray[1];
} ALInstrument;
typedef struct ALBank_s {
s16 instCount; /* number of programs in this bank */
u8 flags;
u8 pad;
s32 sampleRate; /* e.g. 44100, 22050, etc... */
ALInstrument *percussion; /* default percussion for GM */
ALInstrument *instArray[1]; /* ARRAY of instruments */
} ALBank;
typedef struct { /* Note: sizeof won't be correct */
s16 revision; /* format revision of this file */
s16 bankCount; /* number of banks */
ALBank *bankArray[1]; /* ARRAY of bank offsets */
} ALBankFile;
void alBnkfNew(ALBankFile *f, u8 *table);
/***********************************************************************
* Sequence Files
***********************************************************************/
#define AL_SEQBANK_VERSION 'S1'
typedef struct {
u8 *offset;
s32 len;
} ALSeqData;
typedef struct { /* Note: sizeof won't be correct */
s16 revision; /* format revision of this file */
s16 seqCount; /* number of sequences */
ALSeqData seqArray[1]; /* ARRAY of sequence info */
} ALSeqFile;
void alSeqFileNew(ALSeqFile *f, u8 *base);
/***********************************************************************
* Synthesis driver stuff
***********************************************************************/
typedef ALMicroTime (*ALVoiceHandler)(void *);
typedef struct {
s32 maxVVoices; /* obsolete */
s32 maxPVoices;
s32 maxUpdates;
s32 maxFXbusses;
void *dmaproc;
ALHeap *heap;
s32 outputRate; /* output sample rate */
ALFxId fxType;
s32 *params;
} ALSynConfig;
typedef struct ALPlayer_s {
struct ALPlayer_s *next;
void *clientData; /* storage for client callback */
ALVoiceHandler handler; /* voice handler for player */
ALMicroTime callTime; /* usec requested callback */
s32 samplesLeft; /* usec remaining to callback */
} ALPlayer;
typedef struct ALVoice_s {
ALLink node;
struct PVoice_s *pvoice;
ALWaveTable *table;
void *clientPrivate;
s16 state;
s16 priority;
s16 fxBus;
s16 unityPitch;
} ALVoice;
typedef struct ALVoiceConfig_s {
s16 priority; /* voice priority */
s16 fxBus; /* bus assignment */
u8 unityPitch; /* unity pitch flag */
} ALVoiceConfig;
typedef struct {
ALPlayer *head; /* client list head */
ALLink pFreeList; /* list of free physical voices */
ALLink pAllocList; /* list of allocated physical voices */
ALLink pLameList; /* list of voices ready to be freed */
s32 paramSamples;
s32 curSamples; /* samples from start of game */
ALDMANew dma;
ALHeap *heap;
struct ALParam_s *paramList;
struct ALMainBus_s *mainBus;
struct ALAuxBus_s *auxBus; /* ptr to array of aux bus structs */
struct ALFilter_s *outputFilter; /* last filter in the filter chain */
s32 numPVoices;
s32 maxAuxBusses;
s32 outputRate; /* output sample rate */
s32 maxOutSamples; /* Maximum samples rsp can generate
at one time at output rate */
} ALSynth;
void alSynNew(ALSynth *s, ALSynConfig *config);
void alSynDelete(ALSynth *s);
void alSynAddPlayer(ALSynth *s, ALPlayer *client);
void alSynRemovePlayer(ALSynth *s, ALPlayer *client);
s32 alSynAllocVoice(ALSynth *s, ALVoice *v, ALVoiceConfig *vc);
void alSynFreeVoice(ALSynth *s, ALVoice *voice);
void alSynStartVoice(ALSynth *s, ALVoice *voice, ALWaveTable *w);
void alSynStartVoiceParams(ALSynth *s, ALVoice *voice, ALWaveTable *w,
f32 pitch, s16 vol, ALPan pan, u8 fxmix,
ALMicroTime t);
void alSynStopVoice(ALSynth *s, ALVoice *voice);
void alSynSetVol(ALSynth *s, ALVoice *v, s16 vol, ALMicroTime delta);
void alSynSetPitch(ALSynth *s, ALVoice *voice, f32 ratio);
void alSynSetPan(ALSynth *s, ALVoice *voice, ALPan pan);
void alSynSetFXMix(ALSynth *s, ALVoice *voice, u8 fxmix);
void alSynSetPriority(ALSynth *s, ALVoice *voice, s16 priority);
s16 alSynGetPriority(ALSynth *s, ALVoice *voice);
ALFxRef *alSynAllocFX(ALSynth *s, s16 bus, ALSynConfig *c, ALHeap *hp);
ALFxRef alSynGetFXRef(ALSynth *s, s16 bus, s16 index);
void alSynFreeFX(ALSynth *s, ALFxRef *fx);
void alSynSetFXParam(ALSynth *s, ALFxRef fx, s16 paramID, void *param);
/***********************************************************************
* Audio Library (AL) stuff
***********************************************************************/
typedef struct {
ALSynth drvr;
} ALGlobals;
extern ALGlobals *alGlobals;
void alInit(ALGlobals *glob, ALSynConfig *c);
void alClose(ALGlobals *glob);
Acmd *alAudioFrame(Acmd *cmdList, s32 *cmdLen, s16 *outBuf, s32 outLen);
/***********************************************************************
* Sequence Player stuff
***********************************************************************/
/*
* Play states
*/
#define AL_STOPPED 0
#define AL_PLAYING 1
#define AL_STOPPING 2
#define AL_DEFAULT_PRIORITY 5
#define AL_DEFAULT_VOICE 0
#define AL_MAX_CHANNELS 16
/*
* Audio Library event type definitions
*/
enum ALMsg {
AL_SEQ_REF_EVT, /* Reference to a pending event in the sequence. */
AL_SEQ_MIDI_EVT,
AL_SEQP_MIDI_EVT,
AL_TEMPO_EVT,
AL_SEQ_END_EVT,
AL_NOTE_END_EVT,
AL_SEQP_ENV_EVT,
AL_SEQP_META_EVT,
AL_SEQP_PROG_EVT,
AL_SEQP_API_EVT,
AL_SEQP_VOL_EVT,
AL_SEQP_LOOP_EVT,
AL_SEQP_PRIORITY_EVT,
AL_SEQP_SEQ_EVT,
AL_SEQP_BANK_EVT,
AL_SEQP_PLAY_EVT,
AL_SEQP_STOP_EVT,
AL_SEQP_STOPPING_EVT,
AL_TRACK_END,
AL_CSP_LOOPSTART,
AL_CSP_LOOPEND,
AL_CSP_NOTEOFF_EVT,
AL_TREM_OSC_EVT,
AL_VIB_OSC_EVT,
AL_UNK18_EVT
};
/*
* Midi event definitions
*/
#define AL_EVTQ_END 0x7fffffff
enum AL_MIDIstatus {
/* For distinguishing channel number from status */
AL_MIDI_ChannelMask = 0x0F,
AL_MIDI_StatusMask = 0xF0,
/* Channel voice messages */
AL_MIDI_ChannelVoice = 0x80,
AL_MIDI_NoteOff = 0x80,
AL_MIDI_NoteOn = 0x90,
AL_MIDI_PolyKeyPressure = 0xA0,
AL_MIDI_ControlChange = 0xB0,
AL_MIDI_ChannelModeSelect = 0xB0,
AL_MIDI_ProgramChange = 0xC0,
AL_MIDI_ChannelPressure = 0xD0,
AL_MIDI_PitchBendChange = 0xE0,
/* System messages */
AL_MIDI_SysEx = 0xF0, /* System Exclusive */
/* System common */
AL_MIDI_SystemCommon = 0xF1,
AL_MIDI_TimeCodeQuarterFrame = 0xF1,
AL_MIDI_SongPositionPointer = 0xF2,
AL_MIDI_SongSelect = 0xF3,
AL_MIDI_Undefined1 = 0xF4,
AL_MIDI_Undefined2 = 0xF5,
AL_MIDI_TuneRequest = 0xF6,
AL_MIDI_EOX = 0xF7, /* End of System Exclusive */
/* System real time */
AL_MIDI_SystemRealTime = 0xF8,
AL_MIDI_TimingClock = 0xF8,
AL_MIDI_Undefined3 = 0xF9,
AL_MIDI_Start = 0xFA,
AL_MIDI_Continue = 0xFB,
AL_MIDI_Stop = 0xFC,
AL_MIDI_Undefined4 = 0xFD,
AL_MIDI_ActiveSensing = 0xFE,
AL_MIDI_SystemReset = 0xFF,
AL_MIDI_Meta = 0xFF /* MIDI Files only */
};
enum AL_MIDIctrl {
AL_MIDI_VOLUME_CTRL = 0x07,
AL_MIDI_PAN_CTRL = 0x0A,
AL_MIDI_PRIORITY_CTRL = 0x10, /* use general purpose controller for priority */
AL_MIDI_FX_CTRL_0 = 0x14,
AL_MIDI_FX_CTRL_1 = 0x15,
AL_MIDI_FX_CTRL_2 = 0x16,
AL_MIDI_FX_CTRL_3 = 0x17,
AL_MIDI_FX_CTRL_4 = 0x18,
AL_MIDI_FX_CTRL_5 = 0x19,
AL_MIDI_FX_CTRL_6 = 0x1A,
AL_MIDI_FX_CTRL_7 = 0x1B,
AL_MIDI_FX_CTRL_8 = 0x1C,
AL_MIDI_FX_CTRL_9 = 0x1D,
AL_MIDI_SUSTAIN_CTRL = 0x40,
AL_MIDI_FX1_CTRL = 0x5B,
AL_MIDI_FX3_CTRL = 0x5D
};
enum AL_MIDImeta {
AL_MIDI_META_TEMPO = 0x51,
AL_MIDI_META_EOT = 0x2f
};
#define AL_CMIDI_BLOCK_CODE 0xFE
#define AL_CMIDI_LOOPSTART_CODE 0x2E
#define AL_CMIDI_LOOPEND_CODE 0x2D
#define AL_CMIDI_CNTRL_LOOPSTART 102
#define AL_CMIDI_CNTRL_LOOPEND 103
#define AL_CMIDI_CNTRL_LOOPCOUNT_SM 104
#define AL_CMIDI_CNTRL_LOOPCOUNT_BIG 105
typedef struct {
u8 *curPtr; /* ptr to the next event */
s32 lastTicks; /* sequence clock ticks (used by alSeqSetLoc) */
s32 curTicks; /* sequence clock ticks of next event (used by loop end test) */
s16 lastStatus; /* the last status msg */
} ALSeqMarker;
typedef struct {
s32 ticks; /* MIDI, Tempo and End events must start with ticks */
u8 status;
u8 byte1;
u8 byte2;
u32 duration;
} ALMIDIEvent;
typedef struct {
s32 ticks;
u8 status;
u8 type;
u8 len;
u8 byte1;
u8 byte2;
u8 byte3;
} ALTempoEvent;
typedef struct {
s32 ticks;
u8 status;
u8 type;
u8 len;
} ALEndEvent;
typedef struct {
struct ALVoice_s *voice;
} ALNoteEvent;
typedef struct {
struct ALVoice_s *voice;
ALMicroTime delta;
u8 vol;
} ALVolumeEvent;
typedef struct {
s16 vol;
} ALSeqpVolEvent;
typedef struct {
ALSeqMarker *start;
ALSeqMarker *end;
s32 count;
} ALSeqpLoopEvent;
typedef struct {
u8 chan;
u8 priority;
} ALSeqpPriorityEvent;
typedef struct {
void *seq; /* pointer to a seq (could be an ALSeq or an ALCSeq). */
} ALSeqpSeqEvent;
typedef struct {
ALBank *bank;
} ALSeqpBankEvent;
typedef struct {
struct ALVoiceState_s *vs;
void *oscState;
u8 chan;
} ALOscEvent;
typedef struct {
float unk0;
float unk4;
} ALUnk18Event;
typedef struct {
struct struct_81_s * unk0;
s32 unk4;
} ALUnk_Core1_3A70_Event;
typedef struct {
ALVoice voice;
ALSound *sound; /* sound referenced here */
s16 priority;
f32 pitch; /* current playback pitch */
s32 state; /* play state for this sound */
s16 vol; /* volume - combined with volume from bank */
ALPan pan; /* pan - 0 = left, 127 = right */
u8 fxMix; /* wet/dry mix - 0 = dry, 127 = wet */
} ALSoundState;
typedef struct {
s16 type;
union {
ALMIDIEvent midi;
ALTempoEvent tempo;
ALEndEvent end;
ALNoteEvent note;
ALVolumeEvent vol;
ALSeqpLoopEvent loop;
ALSeqpVolEvent spvol;
ALSeqpPriorityEvent sppriority;
ALSeqpSeqEvent spseq;
ALSeqpBankEvent spbank;
ALOscEvent osc;
ALUnk18Event unk18;
ALUnk_Core1_3A70_Event unk3A70;
} msg;
} ALEvent;
typedef struct {
ALLink node;
ALMicroTime delta;
ALEvent evt;
} ALEventListItem;
typedef struct {
ALLink freeList;
ALLink allocList;
s32 eventCount;
} ALEventQueue;
void alEvtqNew(ALEventQueue *evtq, ALEventListItem *items,
s32 itemCount);
ALMicroTime alEvtqNextEvent(ALEventQueue *evtq, ALEvent *evt);
void alEvtqPostEvent(ALEventQueue *evtq, ALEvent *evt,
ALMicroTime delta);
void alEvtqFlush(ALEventQueue *evtq);
void alEvtqFlushType(ALEventQueue *evtq, s16 type);
#define AL_PHASE_ATTACK 0
#define AL_PHASE_NOTEON 0
#define AL_PHASE_DECAY 1
#define AL_PHASE_SUSTAIN 2
#define AL_PHASE_RELEASE 3
#define AL_PHASE_SUSTREL 4
typedef struct ALVoiceState_s {
struct ALVoiceState_s *next;/* MUST be first */
ALVoice voice;
ALSound *sound;
ALMicroTime envEndTime; /* time of envelope segment end */
f32 pitch; /* currect pitch ratio */
f32 vibrato; /* current value of the vibrato */
u8 envGain; /* current envelope gain */
u8 channel; /* channel assignment */
u8 key; /* note on key number */
u8 velocity; /* note on velocity */
u8 envPhase; /* what envelope phase */
u8 phase;
u8 tremelo; /* current value of the tremelo */
u8 flags; /* bit 0 tremelo flag
bit 1 vibrato flag */
} ALVoiceState;
typedef struct {
ALInstrument *instrument; /* instrument assigned to this chan */
s16 bendRange; /* pitch bend range in cents */
ALFxId fxId; /* type of fx assigned to this chan */
ALPan pan; /* overall pan for this chan */
u8 priority; /* priority for this chan */
u8 vol; /* current volume for this chan */
u8 unk9;
u8 fxmix; /* current fx mix for this chan */
u8 sustain; /* current sustain pedal state */
f32 pitchBend; /* current pitch bend val in cents */
} ALChanState;
typedef struct ALSeq_s {
u8 *base; /* ptr to start of sequence file */
u8 *trackStart; /* ptr to first MIDI event */
u8 *curPtr; /* ptr to next event to read */
s32 lastTicks; /* MIDI ticks for last event */
s32 len; /* length of sequence in bytes */
f32 qnpt; /* qrter notes / tick (1/division) */
s16 division; /* ticks per quarter note */
s16 lastStatus; /* for running status */
} ALSeq;
typedef struct {
u32 trackOffset[16];
u32 division;
} ALCMidiHdr;
typedef struct ALCSeq_s {
ALCMidiHdr *base; /* ptr to start of sequence file */
u32 validTracks; /* set of flags, showing valid tracks */
f32 qnpt; /* qrter notes / tick (1/division) */
u32 lastTicks; /* keep track of ticks incase app wants */
u32 lastDeltaTicks; /* number of delta ticks of last event */
u32 deltaFlag; /* flag: set if delta's not subtracted */
u8 *curLoc[16]; /* ptr to current track location, */
/* may point to next event, or may point */
/* to a backup code */
u8 *curBUPtr[16]; /* ptr to next event if in backup mode */
u8 curBULen[16]; /* if > 0, then in backup mode */
u8 lastStatus[16]; /* for running status */
u32 evtDeltaTicks[16]; /* delta time to next event */
} ALCSeq;
typedef struct {
u32 validTracks;
s32 lastTicks;
u32 lastDeltaTicks;
u8 *curLoc[16];
u8 *curBUPtr[16];
u8 curBULen[16];
u8 lastStatus[16];
u32 evtDeltaTicks[16];
} ALCSeqMarker;
#define NO_SOUND_ERR_MASK 0x01
#define NOTE_OFF_ERR_MASK 0x02
#define NO_VOICE_ERR_MASK 0x04
typedef struct {
s32 maxVoices; /* max number of voices to alloc */
s32 maxEvents; /* max internal events to support */
u8 maxChannels; /* max MIDI channels to support (16)*/
u8 debugFlags; /* control which error get reported */
ALHeap *heap; /* ptr to initialized heap */
void *initOsc;
void *updateOsc;
void *stopOsc;
} ALSeqpConfig;
typedef ALMicroTime (*ALOscInit)(void **oscState,f32 *initVal, u8 oscType,
u8 oscRate, u8 oscDepth, u8 oscDelay);
typedef ALMicroTime (*ALOscUpdate)(void *oscState, f32 *updateVal);
typedef void (*ALOscStop)(void *oscState);
typedef struct {
ALPlayer node; /* note: must be first in structure */
ALSynth *drvr; /* reference to the client driver */
ALSeq *target; /* current sequence */
ALMicroTime curTime;
ALBank *bank; /* current ALBank */
s32 uspt; /* microseconds per tick */
s32 nextDelta; /* microseconds to next callback */
s32 state;
u16 chanMask; /* active channels */
s16 vol; /* overall sequence volume */
u8 maxChannels; /* number of MIDI channels */
u8 debugFlags; /* control which error get reported */
ALEvent nextEvent;
ALEventQueue evtq;
ALMicroTime frameTime;
ALChanState *chanState; /* 16 channels for MIDI */
ALVoiceState *vAllocHead; /* list head for allocated voices */
ALVoiceState *vAllocTail; /* list tail for allocated voices */
ALVoiceState *vFreeList; /* list of free voice state structs */
ALOscInit initOsc;
ALOscUpdate updateOsc;
ALOscStop stopOsc;
ALSeqMarker *loopStart;
ALSeqMarker *loopEnd;
s32 loopCount; /* -1 = loop forever, 0 = no loop */
} ALSeqPlayer;
typedef struct {
ALPlayer node; /* note: must be first in structure */
ALSynth *drvr; /* reference to the client driver */
ALCSeq *target; /* current sequence */
ALMicroTime curTime;
ALBank *bank; /* current ALBank */
s32 uspt; /* microseconds per tick */
s32 nextDelta; /* microseconds to next callback */
s32 state;
u16 chanMask; /* active channels */
s16 vol; /* overall sequence volume */
u8 maxChannels; /* number of MIDI channels */
u8 debugFlags; /* control which error get reported */
ALEvent nextEvent;
ALEventQueue evtq;
ALMicroTime frameTime;
ALChanState *chanState; /* 16 channels for MIDI */
ALVoiceState *vAllocHead; /* list head for allocated voices */
ALVoiceState *vAllocTail; /* list tail for allocated voices */
ALVoiceState *vFreeList; /* list of free voice state structs */
ALOscInit initOsc;
ALOscUpdate updateOsc;
ALOscStop stopOsc;
} ALCSPlayer;
/*
* Sequence data representation routines
*/
void alSeqNew(ALSeq *seq, u8 *ptr, s32 len);
void alSeqNextEvent(ALSeq *seq, ALEvent *event);
s32 alSeqGetTicks(ALSeq *seq);
f32 alSeqTicksToSec(ALSeq *seq, s32 ticks, u32 tempo);
u32 alSeqSecToTicks(ALSeq *seq, f32 sec, u32 tempo);
void alSeqNewMarker(ALSeq *seq, ALSeqMarker *m, u32 ticks);
void alSeqSetLoc(ALSeq *seq, ALSeqMarker *marker);
void alSeqGetLoc(ALSeq *seq, ALSeqMarker *marker);
/*
* Compact Sequence data representation routines
*/
void alCSeqNew(ALCSeq *seq, u8 *ptr);
void alCSeqNextEvent(ALCSeq *seq,ALEvent *evt);
s32 alCSeqGetTicks(ALCSeq *seq);
f32 alCSeqTicksToSec(ALCSeq *seq, s32 ticks, u32 tempo);
u32 alCSeqSecToTicks(ALCSeq *seq, f32 sec, u32 tempo);
void alCSeqNewMarker(ALCSeq *seq, ALCSeqMarker *m, u32 ticks);
void alCSeqSetLoc(ALCSeq *seq, ALCSeqMarker *marker);
void alCSeqGetLoc(ALCSeq *seq, ALCSeqMarker *marker);
/*
* Sequence Player routines
*/
f32 alCents2Ratio(s32 cents);
void alSeqpNew(ALSeqPlayer *seqp, ALSeqpConfig *config);
void alSeqpDelete(ALSeqPlayer *seqp);
void alSeqpSetSeq(ALSeqPlayer *seqp, ALSeq *seq);
ALSeq *alSeqpGetSeq(ALSeqPlayer *seqp);
void alSeqpPlay(ALSeqPlayer *seqp);
void alSeqpStop(ALSeqPlayer *seqp);
s32 alSeqpGetState(ALSeqPlayer *seqp);
void alSeqpSetBank(ALSeqPlayer *seqp, ALBank *b);
void alSeqpSetTempo(ALSeqPlayer *seqp, s32 tempo);
s32 alSeqpGetTempo(ALSeqPlayer *seqp);
s16 alSeqpGetVol(ALSeqPlayer *seqp); /* Master volume control */
void alSeqpSetVol(ALSeqPlayer *seqp, s16 vol);
void alSeqpLoop(ALSeqPlayer *seqp, ALSeqMarker *start, ALSeqMarker *end, s32 count);
void alSeqpSetChlProgram(ALSeqPlayer *seqp, u8 chan, u8 prog);
s32 alSeqpGetChlProgram(ALSeqPlayer *seqp, u8 chan);
void alSeqpSetChlFXMix(ALSeqPlayer *seqp, u8 chan, u8 fxmix);
u8 alSeqpGetChlFXMix(ALSeqPlayer *seqp, u8 chan);
void alSeqpSetChlVol(ALSeqPlayer *seqp, u8 chan, u8 vol);
u8 alSeqpGetChlVol(ALSeqPlayer *seqp, u8 chan);
void alSeqpSetChlPan(ALSeqPlayer *seqp, u8 chan, ALPan pan);
ALPan alSeqpGetChlPan(ALSeqPlayer *seqp, u8 chan);
void alSeqpSetChlPriority(ALSeqPlayer *seqp, u8 chan, u8 priority);
u8 alSeqpGetChlPriority(ALSeqPlayer *seqp, u8 chan);
void alSeqpSendMidi(ALSeqPlayer *seqp, s32 ticks, u8 status, u8 byte1, u8 byte2);
/* Maintain backwards compatibility with old routine names. */
#define alSeqpSetProgram alSeqpSetChlProgram
#define alSeqpGetProgram alSeqpGetChlProgram
#define alSeqpSetFXMix alSeqpSetChlFXMix
#define alSeqpGetFXMix alSeqpGetChlFXMix
#define alSeqpSetPan alSeqpSetChlPan
#define alSeqpGetPan alSeqpGetChlPan
#define alSeqpSetChannelPriority alSeqpSetChlPriority
#define alSeqpGetChannelPriority alSeqpGetChlPriority
/*
* Compressed Sequence Player routines
*/
void alCSPNew(ALCSPlayer *seqp, ALSeqpConfig *config);
void alCSPDelete(ALCSPlayer *seqp);
void alCSPSetSeq(ALCSPlayer *seqp, ALCSeq *seq);
ALCSeq *alCSPGetSeq(ALCSPlayer *seqp);
void alCSPPlay(ALCSPlayer *seqp);
void alCSPStop(ALCSPlayer *seqp);
s32 alCSPGetState(ALCSPlayer *seqp);
void alCSPSetBank(ALCSPlayer *seqp, ALBank *b);
void alCSPSetTempo(ALCSPlayer *seqp, s32 tempo);
s32 alCSPGetTempo(ALCSPlayer *seqp);
s16 alCSPGetVol(ALCSPlayer *seqp);
void alCSPSetVol(ALCSPlayer *seqp, s16 vol);
void alCSPSetChlProgram(ALCSPlayer *seqp, u8 chan, u8 prog);
s32 alCSPGetChlProgram(ALCSPlayer *seqp, u8 chan);
void alCSPSetChlFXMix(ALCSPlayer *seqp, u8 chan, u8 fxmix);
u8 alCSPGetChlFXMix(ALCSPlayer *seqp, u8 chan);
void alCSPSetChlPan(ALCSPlayer *seqp, u8 chan, ALPan pan);
ALPan alCSPGetChlPan(ALCSPlayer *seqp, u8 chan);
void alCSPSetChlVol(ALCSPlayer *seqp, u8 chan, u8 vol);
u8 alCSPGetChlVol(ALCSPlayer *seqp, u8 chan);
void alCSPSetChlPriority(ALCSPlayer *seqp, u8 chan, u8 priority);
u8 alCSPGetChlPriority(ALCSPlayer *seqp, u8 chan);
void alCSPSendMidi(ALCSPlayer *seqp, s32 ticks, u8 status,
u8 byte1, u8 byte2);
/* Maintain backwards compatibility with old routine names. */
#define alCSPSetProgram alCSPSetChlProgram
#define alCSPGetProgram alCSPGetChlProgram
#define alCSPSetFXMix alCSPSetChlFXMix
#define alCSPGetFXMix alCSPGetChlFXMix
#define alCSPSetPan alCSPSetChlPan
#define alCSPGetPan alCSPGetChlPan
#define alCSPSetChannelPriority alCSPSetChlPriority
#define alCSPGetChannelPriority alCSPGetChlPriority
/***********************************************************************
* Sound Player stuff
***********************************************************************/
typedef struct {
s32 maxSounds;
s32 maxEvents;
ALHeap *heap;
} ALSndpConfig;
typedef struct {
ALPlayer node; /* note: must be first in structure */
ALEventQueue evtq;
ALEvent nextEvent;
ALSynth *drvr; /* reference to the client driver */
s32 target;
void *sndState;
s32 maxSounds;
ALMicroTime frameTime;
ALMicroTime nextDelta; /* microseconds to next callback */
ALMicroTime curTime;
} ALSndPlayer;
typedef s16 ALSndId;
void alSndpNew(ALSndPlayer *sndp, ALSndpConfig *c);
void alSndpDelete(ALSndPlayer *sndp);
ALSndId alSndpAllocate(ALSndPlayer *sndp, ALSound *sound);
void alSndpDeallocate(ALSndPlayer *sndp, ALSndId id);
void alSndpSetSound(ALSndPlayer *sndp, ALSndId id);
ALSndId alSndpGetSound(ALSndPlayer *sndp);
void alSndpPlay(ALSndPlayer *sndp);
void alSndpPlayAt(ALSndPlayer *sndp, ALMicroTime delta);
void alSndpStop(ALSndPlayer *sndp);
void alSndpSetVol(ALSndPlayer *sndp, s16 vol);
void alSndpSetPitch(ALSndPlayer *sndp, f32 pitch);
void alSndpSetPan(ALSndPlayer *sndp, ALPan pan);
void alSndpSetPriority(ALSndPlayer *sndp, ALSndId id, u8 priority);
void alSndpSetFXMix(ALSndPlayer *sndp, u8 mix);
s32 alSndpGetState(ALSndPlayer *sndp);
#ifndef _FINALROM
void alParseAbiCL(Acmd *cmdList, u32 nbytes);
#endif
#ifdef _LANGUAGE_C_PLUS_PLUS
}
#endif
#endif /* !__LIB_AUDIO__ */