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#ifndef _ABI_H_
#define _ABI_H_
/**************************************************************************
* *
* Copyright (C) 1994, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
**************************************************************************/
/**************************************************************************
*
* $Revision: 1.32 $
* $Date: 1997/02/11 08:16:37 $
* $Source: /exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/abi.h,v $
*
**************************************************************************/
/*
* Header file for the Audio Binary Interface.
* This is included in the Media Binary Interface file
* mbi.h.
*
* This file follows the framework used for graphics.
*
*/
/* Audio commands: */
#define A_SPNOOP 0
#define A_ADPCM 1
#define A_CLEARBUFF 2
#define A_ENVMIXER 3
#define A_LOADBUFF 4
#define A_RESAMPLE 5
#define A_SAVEBUFF 6
#define A_SEGMENT 7
#define A_SETBUFF 8
#define A_SETVOL 9
#define A_DMEMMOVE 10
#define A_LOADADPCM 11
#define A_MIXER 12
#define A_INTERLEAVE 13
#define A_POLEF 14
#define A_SETLOOP 15
#define ACMD_SIZE 32
/*
* Audio flags
*/
#define A_INIT 0x01
#define A_CONTINUE 0x00
#define A_LOOP 0x02
#define A_OUT 0x02
#define A_LEFT 0x02
#define A_RIGHT 0x00
#define A_VOL 0x04
#define A_RATE 0x00
#define A_AUX 0x08
#define A_NOAUX 0x00
#define A_MAIN 0x00
#define A_MIX 0x10
/*
* BEGIN C-specific section: (typedef's)
*/
#if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
/*
* Data Structures.
*/
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int gain:16;
unsigned int addr;
} Aadpcm;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int gain:16;
unsigned int addr;
} Apolef;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int pad1:16;
unsigned int addr;
} Aenvelope;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:8;
unsigned int dmem:16;
unsigned int pad2:16;
unsigned int count:16;
} Aclearbuff;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:8;
unsigned int pad2:16;
unsigned int inL:16;
unsigned int inR:16;
} Ainterleave;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:24;
unsigned int addr;
} Aloadbuff;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int pad1:16;
unsigned int addr;
} Aenvmixer;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int gain:16;
unsigned int dmemi:16;
unsigned int dmemo:16;
} Amixer;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int dmem2:16;
unsigned int addr;
} Apan;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int pitch:16;
unsigned int addr;
} Aresample;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int pad1:16;
unsigned int addr;
} Areverb;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:24;
unsigned int addr;
} Asavebuff;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:24;
unsigned int pad2:2;
unsigned int number:4;
unsigned int base:24;
} Asegment;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int dmemin:16;
unsigned int dmemout:16;
unsigned int count:16;
} Asetbuff;
typedef struct {
unsigned int cmd:8;
unsigned int flags:8;
unsigned int vol:16;
unsigned int voltgt:16;
unsigned int volrate:16;
} Asetvol;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:8;
unsigned int dmemin:16;
unsigned int dmemout:16;
unsigned int count:16;
} Admemmove;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:8;
unsigned int count:16;
unsigned int addr;
} Aloadadpcm;
typedef struct {
unsigned int cmd:8;
unsigned int pad1:8;
unsigned int pad2:16;
unsigned int addr;
} Asetloop;
/*
* Generic Acmd Packet
*/
typedef struct {
unsigned int w0;
unsigned int w1;
} Awords;
typedef union {
Awords words;
Aadpcm adpcm;
Apolef polef;
Aclearbuff clearbuff;
Aenvelope envelope;
Ainterleave interleave;
Aloadbuff loadbuff;
Aenvmixer envmixer;
Aresample resample;
Areverb reverb;
Asavebuff savebuff;
Asegment segment;
Asetbuff setbuff;
Asetvol setvol;
Admemmove dmemmove;
Aloadadpcm loadadpcm;
Amixer mixer;
Asetloop setloop;
long long int force_union_align; /* dummy, force alignment */
} Acmd;
/*
* ADPCM State
*/
#define ADPCMVSIZE 8
#define ADPCMFSIZE 16
typedef short ADPCM_STATE[ADPCMFSIZE];
/*
* Pole filter state
*/
typedef short POLEF_STATE[4];
/*
* Resampler state
*/
typedef short RESAMPLE_STATE[16];
/*
* Resampler constants
*/
#define UNITY_PITCH 0x8000
#define MAX_RATIO 1.99996 /* within .03 cents of +1 octave */
/*
* Enveloper/Mixer state
*/
typedef short ENVMIX_STATE[40];
/*
* Macros to assemble the audio command list
*/
#define aADPCMdec(pkt, f, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_ADPCM, 24, 8) | _SHIFTL(f, 16, 8); \
_a->words.w1 = (unsigned int)(s); \
}
#define aPoleFilter(pkt, f, g, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = (_SHIFTL(A_POLEF, 24, 8) | _SHIFTL(f, 16, 8) | \
_SHIFTL(g, 0, 16)); \
_a->words.w1 = (unsigned int)(s); \
}
#define aClearBuffer(pkt, d, c) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_CLEARBUFF, 24, 8) | _SHIFTL(d, 0, 24); \
_a->words.w1 = (unsigned int)(c); \
}
#define aEnvMixer(pkt, f, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_ENVMIXER, 24, 8) | _SHIFTL(f, 16, 8); \
_a->words.w1 = (unsigned int)(s); \
}
#define aInterleave(pkt, l, r) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_INTERLEAVE, 24, 8); \
_a->words.w1 = _SHIFTL(l, 16, 16) | _SHIFTL(r, 0, 16); \
}
#define aLoadBuffer(pkt, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_LOADBUFF, 24, 8); \
_a->words.w1 = (unsigned int)(s); \
}
#define aMix(pkt, f, g, i, o) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = (_SHIFTL(A_MIXER, 24, 8) | _SHIFTL(f, 16, 8) | \
_SHIFTL(g, 0, 16)); \
_a->words.w1 = _SHIFTL(i,16, 16) | _SHIFTL(o, 0, 16); \
}
#define aPan(pkt, f, d, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = (_SHIFTL(A_PAN, 24, 8) | _SHIFTL(f, 16, 8) | \
_SHIFTL(d, 0, 16)); \
_a->words.w1 = (unsigned int)(s); \
}
#define aResample(pkt, f, p, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = (_SHIFTL(A_RESAMPLE, 24, 8) | _SHIFTL(f, 16, 8) |\
_SHIFTL(p, 0, 16)); \
_a->words.w1 = (unsigned int)(s); \
}
#define aSaveBuffer(pkt, s) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_SAVEBUFF, 24, 8); \
_a->words.w1 = (unsigned int)(s); \
}
#define aSegment(pkt, s, b) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_SEGMENT, 24, 8); \
_a->words.w1 = _SHIFTL(s, 24, 8) | _SHIFTL(b, 0, 24); \
}
#define aSetBuffer(pkt, f, i, o, c) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = (_SHIFTL(A_SETBUFF, 24, 8) | _SHIFTL(f, 16, 8) | \
_SHIFTL(i, 0, 16)); \
_a->words.w1 = _SHIFTL(o, 16, 16) | _SHIFTL(c, 0, 16); \
}
#define aSetVolume(pkt, f, v, t, r) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = (_SHIFTL(A_SETVOL, 24, 8) | _SHIFTL(f, 16, 16) | \
_SHIFTL(v, 0, 16)); \
_a->words.w1 = _SHIFTL(t, 16, 16) | _SHIFTL(r, 0, 16); \
}
#define aSetLoop(pkt, a) \
{ \
Acmd *_a = (Acmd *)pkt; \
_a->words.w0 = _SHIFTL(A_SETLOOP, 24, 8); \
_a->words.w1 = (unsigned int)(a); \
}
#define aDMEMMove(pkt, i, o, c) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_DMEMMOVE, 24, 8) | _SHIFTL(i, 0, 24); \
_a->words.w1 = _SHIFTL(o, 16, 16) | _SHIFTL(c, 0, 16); \
}
#define aLoadADPCM(pkt, c, d) \
{ \
Acmd *_a = (Acmd *)pkt; \
\
_a->words.w0 = _SHIFTL(A_LOADADPCM, 24, 8) | _SHIFTL(c, 0, 24); \
_a->words.w1 = (unsigned int) d; \
}
#endif /* _LANGUAGE_C */
#endif /* !_ABI_H_ */
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