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/***************************************************************************
externals.h - description
-------------------
begin : Wed May 15 2002
copyright : (C) 2002 by Pete Bernert
email : BlackDove@addcom.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. See also the license.txt file for *
* additional informations. *
* *
***************************************************************************/
#include <stdint.h>
/////////////////////////////////////////////////////////
// generic defines
/////////////////////////////////////////////////////////
#ifdef __GNUC__
#define noinline __attribute__((noinline))
#define unlikely(x) __builtin_expect((x), 0)
#else
#define noinline
#define unlikely(x) x
#endif
#define PSE_LT_SPU 4
#define PSE_SPU_ERR_SUCCESS 0
#define PSE_SPU_ERR -60
#define PSE_SPU_ERR_NOTCONFIGURED PSE_SPU_ERR - 1
#define PSE_SPU_ERR_INIT PSE_SPU_ERR - 2
#ifndef max
#define max(a,b) (((a) > (b)) ? (a) : (b))
#define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
////////////////////////////////////////////////////////////////////////
// spu defines
////////////////////////////////////////////////////////////////////////
// num of channels
#define MAXCHAN 24
// note: must be even due to the way reverb works now
#define NSSIZE ((44100 / 50 + 16) & ~1)
///////////////////////////////////////////////////////////
// struct defines
///////////////////////////////////////////////////////////
// ADSR INFOS PER CHANNEL
typedef struct
{
unsigned char State:2;
unsigned char AttackModeExp:1;
unsigned char SustainModeExp:1;
unsigned char SustainIncrease:1;
unsigned char ReleaseModeExp:1;
unsigned char AttackRate;
unsigned char DecayRate;
unsigned char SustainLevel;
unsigned char SustainRate;
unsigned char ReleaseRate;
int EnvelopeVol;
} ADSRInfoEx;
///////////////////////////////////////////////////////////
// Tmp Flags
// used for debug channel muting
#define FLAG_MUTE 1
// used for simple interpolation
#define FLAG_IPOL0 2
#define FLAG_IPOL1 4
///////////////////////////////////////////////////////////
// MAIN CHANNEL STRUCT
typedef struct
{
int iSBPos; // mixing stuff
int spos;
int sinc;
int sinc_inv;
unsigned char * pCurr; // current pos in sound mem
unsigned char * pLoop; // loop ptr in sound mem
unsigned int bStop:1; // is channel stopped (sample _can_ still be playing, ADSR Release phase)
unsigned int bReverb:1; // can we do reverb on this channel? must have ctrl register bit, to get active
unsigned int bRVBActive:1; // reverb active flag
unsigned int bNoise:1; // noise active flag
unsigned int bFMod:2; // freq mod (0=off, 1=sound channel, 2=freq channel)
unsigned int prevflags:3; // flags from previous block
int iLeftVolume; // left volume
int iRightVolume; // right volume
ADSRInfoEx ADSRX;
int iRawPitch; // raw pitch (0...3fff)
int SB[32+4];
} SPUCHAN;
///////////////////////////////////////////////////////////
typedef struct
{
int StartAddr; // reverb area start addr in samples
int CurrAddr; // reverb area curr addr in samples
int VolLeft;
int VolRight;
int iRVBLeft;
int iRVBRight;
int FB_SRC_A; // (offset)
int FB_SRC_B; // (offset)
int IIR_ALPHA; // (coef.)
int ACC_COEF_A; // (coef.)
int ACC_COEF_B; // (coef.)
int ACC_COEF_C; // (coef.)
int ACC_COEF_D; // (coef.)
int IIR_COEF; // (coef.)
int FB_ALPHA; // (coef.)
int FB_X; // (coef.)
int IIR_DEST_A0; // (offset)
int IIR_DEST_A1; // (offset)
int ACC_SRC_A0; // (offset)
int ACC_SRC_A1; // (offset)
int ACC_SRC_B0; // (offset)
int ACC_SRC_B1; // (offset)
int IIR_SRC_A0; // (offset)
int IIR_SRC_A1; // (offset)
int IIR_DEST_B0; // (offset)
int IIR_DEST_B1; // (offset)
int ACC_SRC_C0; // (offset)
int ACC_SRC_C1; // (offset)
int ACC_SRC_D0; // (offset)
int ACC_SRC_D1; // (offset)
int IIR_SRC_B1; // (offset)
int IIR_SRC_B0; // (offset)
int MIX_DEST_A0; // (offset)
int MIX_DEST_A1; // (offset)
int MIX_DEST_B0; // (offset)
int MIX_DEST_B1; // (offset)
int IN_COEF_L; // (coef.)
int IN_COEF_R; // (coef.)
int dirty; // registers changed
// normalized offsets
int nIIR_DEST_A0, nIIR_DEST_A1, nIIR_DEST_B0, nIIR_DEST_B1,
nACC_SRC_A0, nACC_SRC_A1, nACC_SRC_B0, nACC_SRC_B1,
nIIR_SRC_A0, nIIR_SRC_A1, nIIR_SRC_B0, nIIR_SRC_B1,
nACC_SRC_C0, nACC_SRC_C1, nACC_SRC_D0, nACC_SRC_D1,
nMIX_DEST_A0, nMIX_DEST_A1, nMIX_DEST_B0, nMIX_DEST_B1;
// MIX_DEST_xx - FB_SRC_x
int nFB_SRC_A0, nFB_SRC_A1, nFB_SRC_B0, nFB_SRC_B1;
} REVERBInfo;
///////////////////////////////////////////////////////////
// psx buffers / addresses
typedef struct
{
unsigned short spuCtrl;
unsigned short spuStat;
unsigned int spuAddr;
unsigned char * spuMemC;
unsigned char * pSpuIrq;
unsigned int cycles_played;
int decode_pos;
int decode_dirty_ch;
unsigned int bSpuInit:1;
unsigned int bSPUIsOpen:1;
unsigned int dwNoiseVal; // global noise generator
unsigned int dwNoiseCount;
unsigned int dwNewChannel; // flags for faster testing, if new channel starts
unsigned int dwChannelOn; // not silent channels
unsigned int dwChannelDead; // silent+not useful channels
unsigned char * pSpuBuffer;
short * pS;
void (CALLBACK *irqCallback)(void); // func of main emu, called on spu irq
void (CALLBACK *cddavCallback)(unsigned short,unsigned short);
void (CALLBACK *scheduleCallback)(unsigned int);
int * sRVBStart;
xa_decode_t * xapGlobal;
unsigned int * XAFeed;
unsigned int * XAPlay;
unsigned int * XAStart;
unsigned int * XAEnd;
unsigned int * CDDAFeed;
unsigned int * CDDAPlay;
unsigned int * CDDAStart;
unsigned int * CDDAEnd;
unsigned int XARepeat;
unsigned int XALastVal;
int iLeftXAVol;
int iRightXAVol;
int pad[32];
unsigned short regArea[0x400];
unsigned short spuMem[256*1024];
} SPUInfo;
///////////////////////////////////////////////////////////
// SPU.C globals
///////////////////////////////////////////////////////////
#ifndef _IN_SPU
extern SPUInfo spu;
extern SPUCHAN s_chan[];
extern REVERBInfo rvb;
void do_samples(unsigned int cycles_to);
void schedule_next_irq(void);
#define regAreaGet(ch,offset) \
spu.regArea[((ch<<4)|(offset))>>1]
#define do_samples_if_needed(c) \
do { \
if ((int)((c) - spu.cycles_played) >= 16 * 768) \
do_samples(c); \
} while (0)
#endif
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