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411 lines
9.1 KiB
C
411 lines
9.1 KiB
C
#ifndef _ABI_H_
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#define _ABI_H_
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/**************************************************************************
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* *
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* Copyright (C) 1994, Silicon Graphics, Inc. *
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* *
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* These coded instructions, statements, and computer programs contain *
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* unpublished proprietary information of Silicon Graphics, Inc., and *
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* are protected by Federal copyright law. They may not be disclosed *
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* to third parties or copied or duplicated in any form, in whole or *
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* in part, without the prior written consent of Silicon Graphics, Inc. *
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* *
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**************************************************************************/
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/**************************************************************************
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*
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* $Revision: 1.32 $
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* $Date: 1997/02/11 08:16:37 $
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* $Source: /hosts/gate3/exdisk2/cvs/N64OS/Master/cvsmdev2/PR/include/abi.h,v $
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*
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**************************************************************************/
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/*
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* Header file for the Audio Binary Interface.
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* This is included in the Media Binary Interface file
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* mbi.h.
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*
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* This file follows the framework used for graphics.
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*
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*/
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/* Audio commands: */
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#define A_SPNOOP 0
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#define A_ADPCM 1
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#define A_CLEARBUFF 2
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#define A_ENVMIXER 3
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#define A_LOADBUFF 4
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#define A_RESAMPLE 5
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#define A_SAVEBUFF 6
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#define A_SEGMENT 7
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#define A_SETBUFF 8
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#define A_SETVOL 9
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#define A_DMEMMOVE 10
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#define A_LOADADPCM 11
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#define A_MIXER 12
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#define A_INTERLEAVE 13
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#define A_POLEF 14
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#define A_SETLOOP 15
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#define ACMD_SIZE 32
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/*
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* Audio flags
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*/
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#define A_INIT 0x01
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#define A_CONTINUE 0x00
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#define A_LOOP 0x02
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#define A_OUT 0x02
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#define A_LEFT 0x02
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#define A_RIGHT 0x00
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#define A_VOL 0x04
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#define A_RATE 0x00
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#define A_AUX 0x08
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#define A_NOAUX 0x00
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#define A_MAIN 0x00
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#define A_MIX 0x10
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/*
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* BEGIN C-specific section: (typedef's)
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*/
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#if defined(_LANGUAGE_C) || defined(_LANGUAGE_C_PLUS_PLUS)
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/*
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* Data Structures.
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*/
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int gain:16;
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unsigned int addr;
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} Aadpcm;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int gain:16;
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unsigned int addr;
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} Apolef;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int pad1:16;
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unsigned int addr;
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} Aenvelope;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:8;
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unsigned int dmem:16;
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unsigned int pad2:16;
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unsigned int count:16;
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} Aclearbuff;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:8;
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unsigned int pad2:16;
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unsigned int inL:16;
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unsigned int inR:16;
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} Ainterleave;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:24;
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unsigned int addr;
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} Aloadbuff;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int pad1:16;
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unsigned int addr;
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} Aenvmixer;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int gain:16;
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unsigned int dmemi:16;
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unsigned int dmemo:16;
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} Amixer;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int dmem2:16;
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unsigned int addr;
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} Apan;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int pitch:16;
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unsigned int addr;
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} Aresample;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int pad1:16;
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unsigned int addr;
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} Areverb;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:24;
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unsigned int addr;
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} Asavebuff;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:24;
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unsigned int pad2:2;
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unsigned int number:4;
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unsigned int base:24;
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} Asegment;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int dmemin:16;
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unsigned int dmemout:16;
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unsigned int count:16;
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} Asetbuff;
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typedef struct {
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unsigned int cmd:8;
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unsigned int flags:8;
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unsigned int vol:16;
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unsigned int voltgt:16;
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unsigned int volrate:16;
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} Asetvol;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:8;
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unsigned int dmemin:16;
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unsigned int dmemout:16;
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unsigned int count:16;
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} Admemmove;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:8;
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unsigned int count:16;
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unsigned int addr;
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} Aloadadpcm;
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typedef struct {
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unsigned int cmd:8;
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unsigned int pad1:8;
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unsigned int pad2:16;
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unsigned int addr;
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} Asetloop;
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/*
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* Generic Acmd Packet
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*/
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typedef struct {
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unsigned int w0;
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unsigned int w1;
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} Awords;
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typedef union {
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Awords words;
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Aadpcm adpcm;
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Apolef polef;
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Aclearbuff clearbuff;
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Aenvelope envelope;
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Ainterleave interleave;
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Aloadbuff loadbuff;
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Aenvmixer envmixer;
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Aresample resample;
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Areverb reverb;
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Asavebuff savebuff;
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Asegment segment;
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Asetbuff setbuff;
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Asetvol setvol;
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Admemmove dmemmove;
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Aloadadpcm loadadpcm;
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Amixer mixer;
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Asetloop setloop;
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long long int force_union_align; /* dummy, force alignment */
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} Acmd;
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/*
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* ADPCM State
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*/
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#define ADPCMVSIZE 8
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#define ADPCMFSIZE 16
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typedef short ADPCM_STATE[ADPCMFSIZE];
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/*
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* Pole filter state
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*/
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typedef short POLEF_STATE[4];
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/*
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* Resampler state
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*/
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typedef short RESAMPLE_STATE[16];
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/*
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* Resampler constants
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*/
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#define UNITY_PITCH 0x8000
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#define MAX_RATIO 1.99996 /* within .03 cents of +1 octave */
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/*
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* Enveloper/Mixer state
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*/
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typedef short ENVMIX_STATE[40];
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/*
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* Macros to assemble the audio command list
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*/
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#define aADPCMdec(pkt, f, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_ADPCM, 24, 8) | _SHIFTL(f, 16, 8); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aPoleFilter(pkt, f, g, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = (_SHIFTL(A_POLEF, 24, 8) | _SHIFTL(f, 16, 8) | \
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_SHIFTL(g, 0, 16)); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aClearBuffer(pkt, d, c) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_CLEARBUFF, 24, 8) | _SHIFTL(d, 0, 24); \
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_a->words.w1 = (unsigned int)(c); \
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}
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#define aEnvMixer(pkt, f, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_ENVMIXER, 24, 8) | _SHIFTL(f, 16, 8); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aInterleave(pkt, l, r) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_INTERLEAVE, 24, 8); \
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_a->words.w1 = _SHIFTL(l, 16, 16) | _SHIFTL(r, 0, 16); \
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}
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#define aLoadBuffer(pkt, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_LOADBUFF, 24, 8); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aMix(pkt, f, g, i, o) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = (_SHIFTL(A_MIXER, 24, 8) | _SHIFTL(f, 16, 8) | \
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_SHIFTL(g, 0, 16)); \
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_a->words.w1 = _SHIFTL(i,16, 16) | _SHIFTL(o, 0, 16); \
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}
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#define aPan(pkt, f, d, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = (_SHIFTL(A_PAN, 24, 8) | _SHIFTL(f, 16, 8) | \
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_SHIFTL(d, 0, 16)); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aResample(pkt, f, p, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = (_SHIFTL(A_RESAMPLE, 24, 8) | _SHIFTL(f, 16, 8) |\
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_SHIFTL(p, 0, 16)); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aSaveBuffer(pkt, s) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_SAVEBUFF, 24, 8); \
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_a->words.w1 = (unsigned int)(s); \
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}
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#define aSegment(pkt, s, b) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_SEGMENT, 24, 8); \
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_a->words.w1 = _SHIFTL(s, 24, 8) | _SHIFTL(b, 0, 24); \
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}
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#define aSetBuffer(pkt, f, i, o, c) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = (_SHIFTL(A_SETBUFF, 24, 8) | _SHIFTL(f, 16, 8) | \
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_SHIFTL(i, 0, 16)); \
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_a->words.w1 = _SHIFTL(o, 16, 16) | _SHIFTL(c, 0, 16); \
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}
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#define aSetVolume(pkt, f, v, t, r) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = (_SHIFTL(A_SETVOL, 24, 8) | _SHIFTL(f, 16, 16) | \
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_SHIFTL(v, 0, 16)); \
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_a->words.w1 = _SHIFTL(t, 16, 16) | _SHIFTL(r, 0, 16); \
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}
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#define aSetLoop(pkt, a) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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_a->words.w0 = _SHIFTL(A_SETLOOP, 24, 8); \
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_a->words.w1 = (unsigned int)(a); \
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}
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#define aDMEMMove(pkt, i, o, c) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_DMEMMOVE, 24, 8) | _SHIFTL(i, 0, 24); \
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_a->words.w1 = _SHIFTL(o, 16, 16) | _SHIFTL(c, 0, 16); \
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}
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#define aLoadADPCM(pkt, c, d) \
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{ \
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Acmd *_a = (Acmd *)pkt; \
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\
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_a->words.w0 = _SHIFTL(A_LOADADPCM, 24, 8) | _SHIFTL(c, 0, 24); \
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_a->words.w1 = (unsigned int) d; \
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}
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#endif /* _LANGUAGE_C */
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#endif /* !_ABI_H_ */
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