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pcsxr/libpcsxcore/cdrom.c

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/***************************************************************************
* Copyright (C) 2007 Ryan Schultz, PCSX-df Team, PCSX team *
* *
* 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. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
/*
* Handles all CD-ROM registers and functions.
*/
#include "cdrom.h"
#include "ppf.h"
#include "psxdma.h"
cdrStruct cdr;
/* CD-ROM magic numbers */
#define CdlSync 0
#define CdlNop 1
#define CdlSetloc 2
#define CdlPlay 3
#define CdlForward 4
#define CdlBackward 5
#define CdlReadN 6
#define CdlStandby 7
#define CdlStop 8
#define CdlPause 9
#define CdlInit 10 // 0xa
#define CdlMute 11 // 0xb
#define CdlDemute 12 // 0xc
#define CdlSetfilter 13 // 0xd
#define CdlSetmode 14 // 0xe
#define CdlGetmode 15 // 0xf
#define CdlGetlocL 16 // 0x10
#define CdlGetlocP 17 // 0x11
#define CdlReadT 18 // 0x12
#define CdlGetTN 19 // 0x13
#define CdlGetTD 20 // 0x14
#define CdlSeekL 21 // 0x15
#define CdlSeekP 22 // 0x16
#define CdlSetclock 23 // 0x17
#define CdlGetclock 24 // 0x18
#define CdlTest 25 // 0x19
#define CdlID 26 // 0x1a
#define CdlReadS 27 // 0x1b
#define CdlReset 28 // 0x1c
#define CdlGetQ 29 // 0x1d
#define CdlReadToc 30 // 0x1e
char *CmdName[0x100]= {
"CdlSync", "CdlNop", "CdlSetloc", "CdlPlay",
"CdlForward", "CdlBackward", "CdlReadN", "CdlStandby",
"CdlStop", "CdlPause", "CdlInit", "CdlMute",
"CdlDemute", "CdlSetfilter", "CdlSetmode", "CdlGetmode",
"CdlGetlocL", "CdlGetlocP", "CdlReadT", "CdlGetTN",
"CdlGetTD", "CdlSeekL", "CdlSeekP", "CdlSetclock",
"CdlGetclock", "CdlTest", "CdlID", "CdlReadS",
"CdlReset", NULL, "CDlReadToc", NULL
};
unsigned char Test04[] = { 0 };
unsigned char Test05[] = { 0 };
unsigned char Test20[] = { 0x98, 0x06, 0x10, 0xC3 };
unsigned char Test22[] = { 0x66, 0x6F, 0x72, 0x20, 0x45, 0x75, 0x72, 0x6F };
unsigned char Test23[] = { 0x43, 0x58, 0x44, 0x32, 0x39 ,0x34, 0x30, 0x51 };
// cdr.Stat:
#define NoIntr 0
#define DataReady 1
#define Complete 2
#define Acknowledge 3
#define DataEnd 4
#define DiskError 5
/* Modes flags */
#define MODE_SPEED (1<<7) // 0x80
#define MODE_STRSND (1<<6) // 0x40 ADPCM on/off
#define MODE_SIZE_2340 (1<<5) // 0x20
#define MODE_SIZE_2328 (1<<4) // 0x10
#define MODE_SIZE_2048 (0<<4) // 0x00
#define MODE_SF (1<<3) // 0x08 channel on/off
#define MODE_REPORT (1<<2) // 0x04
#define MODE_AUTOPAUSE (1<<1) // 0x02
#define MODE_CDDA (1<<0) // 0x01
/* Status flags */
#define STATUS_PLAY (1<<7) // 0x80
#define STATUS_SEEK (1<<6) // 0x40
#define STATUS_READ (1<<5) // 0x20
#define STATUS_SHELLOPEN (1<<4) // 0x10
#define STATUS_UNKNOWN3 (1<<3) // 0x08
#define STATUS_UNKNOWN2 (1<<2) // 0x04
#define STATUS_ROTATING (1<<1) // 0x02
#define STATUS_ERROR (1<<0) // 0x01
/* Errors */
#define ERROR_NOTREADY (1<<7) // 0x80
#define ERROR_INVALIDCMD (1<<6) // 0x40
#define ERROR_INVALIDARG (1<<5) // 0x20
// 1x = 75 sectors per second
// PSXCLK = 1 sec in the ps
// so (PSXCLK / 75) = cdr read time (linuzappz)
#define cdReadTime (PSXCLK / 75)
enum drive_state {
DRIVESTATE_STANDBY = 0,
DRIVESTATE_LID_OPEN,
DRIVESTATE_RESCAN_CD,
DRIVESTATE_PREPARE_CD,
DRIVESTATE_STOPPED,
};
// for cdr.Seeked
enum seeked_state {
SEEK_PENDING = 0,
SEEK_DONE = 1,
};
static struct CdrStat stat;
extern unsigned int msf2sec(const char *msf);
extern void sec2msf(unsigned int s, const char *msf);
// for that weird psemu API..
static unsigned int fsm2sec(const u8 *msf) {
return ((msf[2] * 60 + msf[1]) * 75) + msf[0];
}
extern long CALLBACK ISOinit(void);
extern void CALLBACK SPUirq(void);
extern SPUregisterCallback SPU_registerCallback;
// A bit of a kludge, but it will get rid of the "macro redefined" warnings
#ifdef H_SPUirqAddr
#undef H_SPUirqAddr
#endif
#ifdef H_SPUaddr
#undef H_SPUaddr
#endif
#ifdef H_SPUctrl
#undef H_SPUctrl
#endif
#define H_SPUirqAddr 0x1f801da4
#define H_SPUaddr 0x1f801da6
#define H_SPUctrl 0x1f801daa
#define H_CDLeft 0x1f801db0
#define H_CDRight 0x1f801db2
// cdrInterrupt
#define CDR_INT(eCycle) { \
psxRegs.interrupt |= (1 << PSXINT_CDR); \
psxRegs.intCycle[PSXINT_CDR].cycle = eCycle; \
psxRegs.intCycle[PSXINT_CDR].sCycle = psxRegs.cycle; \
}
// cdrReadInterrupt
#define CDREAD_INT(eCycle) { \
psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
}
// cdrDecodedBufferInterrupt
#define CDRDBUF_INT(eCycle) { \
psxRegs.interrupt |= (1 << PSXINT_CDRDBUF); \
psxRegs.intCycle[PSXINT_CDRDBUF].cycle = eCycle; \
psxRegs.intCycle[PSXINT_CDRDBUF].sCycle = psxRegs.cycle; \
}
// cdrLidSeekInterrupt
#define CDRLID_INT(eCycle) { \
psxRegs.interrupt |= (1 << PSXINT_CDRLID); \
psxRegs.intCycle[PSXINT_CDRLID].cycle = eCycle; \
psxRegs.intCycle[PSXINT_CDRLID].sCycle = psxRegs.cycle; \
}
// cdrPlayInterrupt
#define CDRMISC_INT(eCycle) { \
psxRegs.interrupt |= (1 << PSXINT_CDRPLAY); \
psxRegs.intCycle[PSXINT_CDRPLAY].cycle = eCycle; \
psxRegs.intCycle[PSXINT_CDRPLAY].sCycle = psxRegs.cycle; \
}
#define StopReading() { \
if (cdr.Reading) { \
cdr.Reading = 0; \
psxRegs.interrupt &= ~(1 << PSXINT_CDREAD); \
} \
cdr.StatP &= ~(STATUS_READ|STATUS_SEEK);\
}
#define StopCdda() { \
if (cdr.Play) { \
if (!Config.Cdda) CDR_stop(); \
cdr.StatP &= ~STATUS_PLAY; \
cdr.Play = FALSE; \
cdr.FastForward = 0; \
cdr.FastBackward = 0; \
SPU_registerCallback( SPUirq ); \
} \
}
#define SetResultSize(size) { \
cdr.ResultP = 0; \
cdr.ResultC = size; \
cdr.ResultReady = 1; \
}
static void setIrq(void)
{
if (cdr.Stat & cdr.Reg2)
psxHu32ref(0x1070) |= SWAP32((u32)0x4);
}
static void adjustTransferIndex(void)
{
unsigned int bufSize = 0;
switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
case MODE_SIZE_2340: bufSize = 2340; break;
case MODE_SIZE_2328: bufSize = 12 + 2328; break;
default:
case MODE_SIZE_2048: bufSize = 12 + 2048; break;
}
if (cdr.transferIndex >= bufSize)
cdr.transferIndex -= bufSize;
}
// FIXME: do this in SPU instead
void cdrDecodedBufferInterrupt()
{
#if 0
return;
#endif
// ISO reader only
if( CDR_init != ISOinit ) return;
// check dbuf IRQ still active
if( cdr.Play == 0 ) return;
if( (SPU_readRegister( H_SPUctrl ) & 0x40) == 0 ) return;
if( (SPU_readRegister( H_SPUirqAddr ) * 8) >= 0x800 ) return;
// turn off plugin SPU IRQ decoded buffer handling
SPU_registerCallback( 0 );
/*
Vib Ribbon
000-3FF = left CDDA
400-7FF = right CDDA
Assume IRQ every wrap
*/
// signal CDDA data ready
psxHu32ref(0x1070) |= SWAP32((u32)0x200);
// time for next full buffer
//CDRDBUF_INT( PSXCLK / 44100 * 0x200 );
CDRDBUF_INT( PSXCLK / 44100 * 0x100 );
}
// timing used in this function was taken from tests on real hardware
// (yes it's slow, but you probably don't want to modify it)
void cdrLidSeekInterrupt()
{
switch (cdr.DriveState) {
default:
case DRIVESTATE_STANDBY:
cdr.StatP &= ~STATUS_SEEK;
if (CDR_getStatus(&stat) == -1)
return;
if (stat.Status & STATUS_SHELLOPEN)
{
StopCdda();
cdr.DriveState = DRIVESTATE_LID_OPEN;
CDRLID_INT(0x800);
}
break;
case DRIVESTATE_LID_OPEN:
if (CDR_getStatus(&stat) == -1)
stat.Status &= ~STATUS_SHELLOPEN;
// 02, 12, 10
if (!(cdr.StatP & STATUS_SHELLOPEN)) {
StopReading();
cdr.StatP |= STATUS_SHELLOPEN;
// could generate error irq here, but real hardware
// only sometimes does that
// (not done when lots of commands are sent?)
CDRLID_INT(cdReadTime * 30);
break;
}
else if (cdr.StatP & STATUS_ROTATING) {
cdr.StatP &= ~STATUS_ROTATING;
}
else if (!(stat.Status & STATUS_SHELLOPEN)) {
// closed now
CheckCdrom();
// cdr.StatP STATUS_SHELLOPEN is "sticky"
// and is only cleared by CdlNop
cdr.DriveState = DRIVESTATE_RESCAN_CD;
CDRLID_INT(cdReadTime * 105);
break;
}
// recheck for close
CDRLID_INT(cdReadTime * 3);
break;
case DRIVESTATE_RESCAN_CD:
cdr.StatP |= STATUS_ROTATING;
cdr.DriveState = DRIVESTATE_PREPARE_CD;
// this is very long on real hardware, over 6 seconds
// make it a bit faster here...
CDRLID_INT(cdReadTime * 150);
break;
case DRIVESTATE_PREPARE_CD:
cdr.StatP |= STATUS_SEEK;
cdr.DriveState = DRIVESTATE_STANDBY;
CDRLID_INT(cdReadTime * 26);
break;
}
}
static void Find_CurTrack(const u8 *time)
{
int current, sect;
current = msf2sec(time);
for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
sect = fsm2sec(cdr.ResultTD);
if (sect - current >= 150)
break;
}
#ifdef CDR_LOG
CDR_LOG("Find_CurTrack *** %02d %02d\n", cdr.CurTrack, current);
#endif
}
static void generate_subq(const u8 *time)
{
unsigned char start[3], next[3];
unsigned int this_s, start_s, next_s, pregap;
int relative_s;
CDR_getTD(cdr.CurTrack, start);
if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
pregap = 150;
CDR_getTD(cdr.CurTrack + 1, next);
}
else {
// last track - cd size
pregap = 0;
next[0] = cdr.SetSectorEnd[2];
next[1] = cdr.SetSectorEnd[1];
next[2] = cdr.SetSectorEnd[0];
}
this_s = msf2sec(time);
start_s = fsm2sec(start);
next_s = fsm2sec(next);
cdr.TrackChanged = FALSE;
if (next_s - this_s < pregap) {
cdr.TrackChanged = TRUE;
cdr.CurTrack++;
start_s = next_s;
}
cdr.subq.Index = 1;
relative_s = this_s - start_s;
if (relative_s < 0) {
cdr.subq.Index = 0;
relative_s = -relative_s;
}
sec2msf(relative_s, cdr.subq.Relative);
cdr.subq.Track = itob(cdr.CurTrack);
cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
cdr.subq.Absolute[0] = itob(time[0]);
cdr.subq.Absolute[1] = itob(time[1]);
cdr.subq.Absolute[2] = itob(time[2]);
}
static void ReadTrack(const u8 *time) {
unsigned char tmp[3];
struct SubQ *subq;
u16 crc;
tmp[0] = itob(time[0]);
tmp[1] = itob(time[1]);
tmp[2] = itob(time[2]);
if (memcmp(cdr.Prev, tmp, 3) == 0)
return;
#ifdef CDR_LOG
CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
#endif
cdr.RErr = CDR_readTrack(tmp);
memcpy(cdr.Prev, tmp, 3);
subq = (struct SubQ *)CDR_getBufferSub();
if (subq != NULL && cdr.CurTrack == 1) {
crc = calcCrc((u8 *)subq + 12, 10);
if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
cdr.subq.Track = subq->TrackNumber;
cdr.subq.Index = subq->IndexNumber;
memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
}
else {
#ifdef CDR_LOG_IO
CDR_LOG_IO("subq bad crc @%02x:%02x:%02x\n",
tmp[0], tmp[1], tmp[2]);
#endif
}
}
else {
generate_subq(time);
}
#ifdef CDR_LOG
CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
cdr.subq.Track, cdr.subq.Index,
cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
#endif
}
static void AddIrqQueue(unsigned short irq, unsigned long ecycle) {
if (cdr.Irq != 0) {
if (irq == cdr.Irq || irq + 0x100 == cdr.Irq) {
cdr.IrqRepeated = 1;
CDR_INT(ecycle);
return;
}
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr: override cmd %02x -> %02x\n", cdr.Irq, irq);
#endif
}
cdr.Irq = irq;
cdr.eCycle = ecycle;
CDR_INT(ecycle);
}
static void cdrPlayInterrupt_Autopause()
{
if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
#ifdef CDR_LOG
CDR_LOG( "CDDA STOP\n" );
#endif
// Magic the Gathering
// - looping territory cdda
// ...?
//cdr.ResultReady = 1;
//cdr.Stat = DataReady;
cdr.Stat = DataEnd;
setIrq();
StopCdda();
}
else if (cdr.Mode & MODE_REPORT) {
cdr.Result[0] = cdr.StatP;
cdr.Result[1] = cdr.subq.Track;
cdr.Result[2] = cdr.subq.Index;
if (cdr.subq.Absolute[2] & 0x10) {
cdr.Result[3] = cdr.subq.Relative[0];
cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
cdr.Result[5] = cdr.subq.Relative[2];
}
else {
cdr.Result[3] = cdr.subq.Absolute[0];
cdr.Result[4] = cdr.subq.Absolute[1];
cdr.Result[5] = cdr.subq.Absolute[2];
}
cdr.Result[6] = 0;
cdr.Result[7] = 0;
// Rayman: Logo freeze (resultready + dataready)
cdr.ResultReady = 1;
cdr.Stat = DataReady;
SetResultSize(8);
setIrq();
}
}
// also handles seek
void cdrPlayInterrupt()
{
if (cdr.Seeked == SEEK_PENDING) {
if (cdr.Stat) {
CDRMISC_INT( 0x100 );
return;
}
SetResultSize(1);
cdr.StatP |= STATUS_ROTATING;
cdr.StatP &= ~STATUS_SEEK;
cdr.Result[0] = cdr.StatP;
cdr.Seeked = SEEK_DONE;
if (cdr.Irq == 0) {
cdr.Stat = Complete;
setIrq();
}
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
Find_CurTrack(cdr.SetSectorPlay);
ReadTrack(cdr.SetSectorPlay);
cdr.TrackChanged = FALSE;
}
if (!cdr.Play) return;
#ifdef CDR_LOG
CDR_LOG( "CDDA - %d:%d:%d\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
#endif
if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
StopCdda();
cdr.TrackChanged = TRUE;
}
if (!cdr.Irq && !cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
cdrPlayInterrupt_Autopause();
if (!cdr.Play) return;
if (CDR_readCDDA && !cdr.Muted) {
CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1],
cdr.SetSectorPlay[2], cdr.Transfer);
cdrAttenuate((s16 *)cdr.Transfer, CD_FRAMESIZE_RAW / 4, 1);
if (SPU_playCDDAchannel)
SPU_playCDDAchannel((short *)cdr.Transfer, CD_FRAMESIZE_RAW);
}
cdr.SetSectorPlay[2]++;
if (cdr.SetSectorPlay[2] == 75) {
cdr.SetSectorPlay[2] = 0;
cdr.SetSectorPlay[1]++;
if (cdr.SetSectorPlay[1] == 60) {
cdr.SetSectorPlay[1] = 0;
cdr.SetSectorPlay[0]++;
}
}
CDRMISC_INT(cdReadTime);
// update for CdlGetlocP/autopause
generate_subq(cdr.SetSectorPlay);
}
void cdrInterrupt() {
u16 Irq = cdr.Irq;
int no_busy_error = 0;
int start_rotating = 0;
int error = 0;
int delay;
// Reschedule IRQ
if (cdr.Stat) {
CDR_INT( 0x100 );
return;
}
cdr.Ctrl &= ~0x80;
// default response
SetResultSize(1);
cdr.Result[0] = cdr.StatP;
cdr.Stat = Acknowledge;
if (cdr.IrqRepeated) {
cdr.IrqRepeated = 0;
if (cdr.eCycle > psxRegs.cycle) {
CDR_INT(cdr.eCycle);
goto finish;
}
}
cdr.Irq = 0;
#ifdef CDR_LOG
CDR_LOG("CDRINT %x %x %x %x\n", cdr.Seeked, cdr.Stat, Irq, cdr.IrqRepeated);
#endif
switch (Irq) {
case CdlSync:
// TOOD: sometimes/always return error?
break;
case CdlNop:
if (cdr.DriveState != DRIVESTATE_LID_OPEN)
cdr.StatP &= ~STATUS_SHELLOPEN;
no_busy_error = 1;
break;
case CdlSetloc:
break;
do_CdlPlay:
case CdlPlay:
StopCdda();
if (cdr.Seeked == SEEK_PENDING) {
// XXX: wrong, should seek instead..
cdr.Seeked = SEEK_DONE;
}
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
// BIOS CD Player
// - Pause player, hit Track 01/02/../xx (Setloc issued!!)
if (cdr.ParamC == 0 || cdr.Param[0] == 0) {
#ifdef CDR_LOG
CDR_LOG("PLAY Resume @ %d:%d:%d\n",
cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2]);
#endif
}
else
{
int track = btoi( cdr.Param[0] );
if (track <= cdr.ResultTN[1])
cdr.CurTrack = track;
#ifdef CDR_LOG
CDR_LOG("PLAY track %d\n", cdr.CurTrack);
#endif
if (CDR_getTD((u8)cdr.CurTrack, cdr.ResultTD) != -1) {
cdr.SetSectorPlay[0] = cdr.ResultTD[2];
cdr.SetSectorPlay[1] = cdr.ResultTD[1];
cdr.SetSectorPlay[2] = cdr.ResultTD[0];
}
}
/*
Rayman: detect track changes
- fixes logo freeze
Twisted Metal 2: skip PREGAP + starting accurate SubQ
- plays tracks without retry play
Wild 9: skip PREGAP + starting accurate SubQ
- plays tracks without retry play
*/
Find_CurTrack(cdr.SetSectorPlay);
ReadTrack(cdr.SetSectorPlay);
cdr.TrackChanged = FALSE;
if (Config.Cdda != CDDA_DISABLED)
CDR_play(cdr.SetSectorPlay);
// Vib Ribbon: gameplay checks flag
cdr.StatP &= ~STATUS_SEEK;
cdr.Result[0] = cdr.StatP;
cdr.StatP |= STATUS_PLAY;
// BIOS player - set flag again
cdr.Play = TRUE;
CDRMISC_INT( cdReadTime );
start_rotating = 1;
break;
case CdlForward:
// TODO: error 80 if stopped
cdr.Stat = Complete;
// GameShark CD Player: Calls 2x + Play 2x
if( cdr.FastForward == 0 ) cdr.FastForward = 2;
else cdr.FastForward++;
cdr.FastBackward = 0;
break;
case CdlBackward:
cdr.Stat = Complete;
// GameShark CD Player: Calls 2x + Play 2x
if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
else cdr.FastBackward++;
cdr.FastForward = 0;
break;
case CdlStandby:
if (cdr.DriveState != DRIVESTATE_STOPPED) {
error = ERROR_INVALIDARG;
goto set_error;
}
AddIrqQueue(CdlStandby + 0x100, cdReadTime * 125 / 2);
start_rotating = 1;
break;
case CdlStandby + 0x100:
cdr.Stat = Complete;
break;
case CdlStop:
if (cdr.Play) {
// grab time for current track
CDR_getTD((u8)(cdr.CurTrack), cdr.ResultTD);
cdr.SetSectorPlay[0] = cdr.ResultTD[2];
cdr.SetSectorPlay[1] = cdr.ResultTD[1];
cdr.SetSectorPlay[2] = cdr.ResultTD[0];
}
StopCdda();
StopReading();
delay = 0x800;
if (cdr.DriveState == DRIVESTATE_STANDBY)
delay = cdReadTime * 30 / 2;
cdr.DriveState = DRIVESTATE_STOPPED;
AddIrqQueue(CdlStop + 0x100, delay);
break;
case CdlStop + 0x100:
cdr.StatP &= ~STATUS_ROTATING;
cdr.Result[0] = cdr.StatP;
cdr.Stat = Complete;
break;
case CdlPause:
/*
Gundam Battle Assault 2: much slower (*)
- Fixes boot, gameplay
Hokuto no Ken 2: slower
- Fixes intro + subtitles
InuYasha - Feudal Fairy Tale: slower
- Fixes battles
*/
AddIrqQueue(CdlPause + 0x100, cdReadTime * 3);
cdr.Ctrl |= 0x80;
break;
case CdlPause + 0x100:
cdr.StatP &= ~STATUS_READ;
cdr.Result[0] = cdr.StatP;
cdr.Stat = Complete;
break;
case CdlInit:
AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
no_busy_error = 1;
start_rotating = 1;
break;
case CdlInit + 0x100:
cdr.Stat = Complete;
break;
case CdlMute:
cdr.Muted = TRUE;
break;
case CdlDemute:
cdr.Muted = FALSE;
break;
case CdlSetfilter:
cdr.File = cdr.Param[0];
cdr.Channel = cdr.Param[1];
break;
case CdlSetmode:
no_busy_error = 1;
break;
case CdlGetmode:
SetResultSize(6);
cdr.Result[1] = cdr.Mode;
cdr.Result[2] = cdr.File;
cdr.Result[3] = cdr.Channel;
cdr.Result[4] = 0;
cdr.Result[5] = 0;
no_busy_error = 1;
break;
case CdlGetlocL:
SetResultSize(8);
memcpy(cdr.Result, cdr.Transfer, 8);
break;
case CdlGetlocP:
SetResultSize(8);
memcpy(&cdr.Result, &cdr.subq, 8);
if (!cdr.Play && CheckSBI(cdr.Result+5))
memset(cdr.Result+2, 0, 6);
if (!cdr.Play && !cdr.Reading)
cdr.Result[1] = 0; // HACK?
break;
case CdlReadT: // SetSession?
// really long
AddIrqQueue(CdlReadT + 0x100, cdReadTime * 290 / 4);
start_rotating = 1;
break;
case CdlReadT + 0x100:
cdr.Stat = Complete;
break;
case CdlGetTN:
SetResultSize(3);
if (CDR_getTN(cdr.ResultTN) == -1) {
cdr.Stat = DiskError;
cdr.Result[0] |= STATUS_ERROR;
} else {
cdr.Stat = Acknowledge;
cdr.Result[1] = itob(cdr.ResultTN[0]);
cdr.Result[2] = itob(cdr.ResultTN[1]);
}
break;
case CdlGetTD:
cdr.Track = btoi(cdr.Param[0]);
SetResultSize(4);
if (CDR_getTD(cdr.Track, cdr.ResultTD) == -1) {
cdr.Stat = DiskError;
cdr.Result[0] |= STATUS_ERROR;
} else {
cdr.Stat = Acknowledge;
cdr.Result[0] = cdr.StatP;
cdr.Result[1] = itob(cdr.ResultTD[2]);
cdr.Result[2] = itob(cdr.ResultTD[1]);
cdr.Result[3] = itob(cdr.ResultTD[0]);
}
break;
case CdlSeekL:
case CdlSeekP:
StopCdda();
StopReading();
cdr.StatP |= STATUS_SEEK;
/*
Crusaders of Might and Magic = 0.5x-4x
- fix cutscene speech start
Eggs of Steel = 2x-?
- fix new game
Medievil = ?-4x
- fix cutscene speech
Rockman X5 = 0.5-4x
- fix capcom logo
*/
CDRMISC_INT(cdr.Seeked == SEEK_DONE ? 0x800 : cdReadTime * 4);
cdr.Seeked = SEEK_PENDING;
start_rotating = 1;
break;
case CdlTest:
switch (cdr.Param[0]) {
case 0x20: // System Controller ROM Version
SetResultSize(4);
memcpy(cdr.Result, Test20, 4);
break;
case 0x22:
SetResultSize(8);
memcpy(cdr.Result, Test22, 4);
break;
case 0x23: case 0x24:
SetResultSize(8);
memcpy(cdr.Result, Test23, 4);
break;
}
no_busy_error = 1;
break;
case CdlID:
AddIrqQueue(CdlID + 0x100, 20480);
break;
case CdlID + 0x100:
SetResultSize(8);
cdr.Result[0] = cdr.StatP;
cdr.Result[1] = 0;
cdr.Result[2] = 0;
cdr.Result[3] = 0;
// 0x10 - audio | 0x40 - disk missing | 0x80 - unlicensed
if (CDR_getStatus(&stat) == -1 || stat.Type == 0 || stat.Type == 0xff) {
cdr.Result[1] = 0xc0;
}
else {
if (stat.Type == 2)
cdr.Result[1] |= 0x10;
if (CdromId[0] == '\0')
cdr.Result[1] |= 0x80;
}
cdr.Result[0] |= (cdr.Result[1] >> 4) & 0x08;
strncpy((char *)&cdr.Result[4], "PCSX", 4);
cdr.Stat = Complete;
break;
case CdlReset:
// yes, it really sets STATUS_SHELLOPEN
cdr.StatP |= STATUS_SHELLOPEN;
cdr.DriveState = DRIVESTATE_RESCAN_CD;
CDRLID_INT(20480);
no_busy_error = 1;
start_rotating = 1;
break;
case CdlGetQ:
// TODO?
#ifdef CDR_LOG
CDR_LOG("got CdlGetQ\n");
#endif
break;
case CdlReadToc:
AddIrqQueue(CdlReadToc + 0x100, cdReadTime * 180 / 4);
no_busy_error = 1;
start_rotating = 1;
break;
case CdlReadToc + 0x100:
cdr.Stat = Complete;
no_busy_error = 1;
break;
case CdlReadN:
case CdlReadS:
if (cdr.SetlocPending) {
memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
cdr.SetlocPending = 0;
}
Find_CurTrack(cdr.SetSectorPlay);
if ((cdr.Mode & MODE_CDDA) && cdr.CurTrack > 1)
// Read* acts as play for cdda tracks in cdda mode
goto do_CdlPlay;
cdr.Reading = 1;
cdr.FirstSector = 1;
// Fighting Force 2 - update subq time immediately
// - fixes new game
ReadTrack(cdr.SetSectorPlay);
// Crusaders of Might and Magic - update getlocl now
// - fixes cutscene speech
{
u8 *buf = CDR_getBuffer();
if (buf != NULL)
memcpy(cdr.Transfer, buf, 8);
}
/*
Duke Nukem: Land of the Babes - seek then delay read for one frame
- fixes cutscenes
C-12 - Final Resistance - doesn't like seek
*/
if (cdr.Seeked != SEEK_DONE) {
cdr.StatP |= STATUS_SEEK;
cdr.StatP &= ~STATUS_READ;
// Crusaders of Might and Magic - use short time
// - fix cutscene speech (startup)
// ??? - use more accurate seek time later
CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2);
} else {
cdr.StatP |= STATUS_READ;
cdr.StatP &= ~STATUS_SEEK;
CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2);
}
cdr.Result[0] = cdr.StatP;
start_rotating = 1;
break;
default:
#ifdef CDR_LOG
CDR_LOG("Invalid command: %02x\n", Irq);
#endif
error = ERROR_INVALIDCMD;
// FALLTHROUGH
set_error:
SetResultSize(2);
cdr.Result[0] = cdr.StatP | STATUS_ERROR;
cdr.Result[1] = error;
cdr.Stat = DiskError;
break;
}
if (cdr.DriveState == DRIVESTATE_STOPPED && start_rotating) {
cdr.DriveState = DRIVESTATE_STANDBY;
cdr.StatP |= STATUS_ROTATING;
}
if (!no_busy_error) {
switch (cdr.DriveState) {
case DRIVESTATE_LID_OPEN:
case DRIVESTATE_RESCAN_CD:
case DRIVESTATE_PREPARE_CD:
SetResultSize(2);
cdr.Result[0] = cdr.StatP | STATUS_ERROR;
cdr.Result[1] = ERROR_NOTREADY;
cdr.Stat = DiskError;
break;
}
}
finish:
setIrq();
cdr.ParamC = 0;
#ifdef CDR_LOG_IO
{
int i;
CDR_LOG_IO("CDR IRQ %d cmd %02x stat %02x: ",
!!(cdr.Stat & cdr.Reg2), Irq, cdr.Stat);
for (i = 0; i < cdr.ResultC; i++)
CDR_LOG_IO("%02x ", cdr.Result[i]);
CDR_LOG_IO("\n");
}
#endif
}
#define ssat32_to_16(v) do { \
if (v < -32768) v = -32768; \
else if (v > 32767) v = 32767; \
} while (0)
void cdrAttenuate(s16 *buf, int samples, int stereo)
{
int i, l, r;
int ll = cdr.AttenuatorLeftToLeft;
int lr = cdr.AttenuatorLeftToRight;
int rl = cdr.AttenuatorRightToLeft;
int rr = cdr.AttenuatorRightToRight;
if (lr == 0 && rl == 0 && 0x78 <= ll && ll <= 0x88 && 0x78 <= rr && rr <= 0x88)
return;
if (!stereo && ll == 0x40 && lr == 0x40 && rl == 0x40 && rr == 0x40)
return;
if (stereo) {
for (i = 0; i < samples; i++) {
l = buf[i * 2];
r = buf[i * 2 + 1];
l = (l * ll + r * rl) >> 7;
r = (r * rr + l * lr) >> 7;
ssat32_to_16(l);
ssat32_to_16(r);
buf[i * 2] = l;
buf[i * 2 + 1] = r;
}
}
else {
for (i = 0; i < samples; i++) {
l = buf[i];
l = l * (ll + rl) >> 7;
//r = r * (rr + lr) >> 7;
ssat32_to_16(l);
//ssat32_to_16(r);
buf[i] = l;
}
}
}
void cdrReadInterrupt() {
u8 *buf;
if (!cdr.Reading)
return;
if (cdr.Irq || cdr.Stat) {
CDREAD_INT(0x100);
return;
}
if ((psxHu32ref(0x1070) & psxHu32ref(0x1074) & SWAP32((u32)0x4)) && !cdr.ReadRescheduled) {
// HACK: with BIAS 2, emulated CPU is often slower than real thing,
// game may be unfinished with prev data read, so reschedule
// (Brave Fencer Musashi)
CDREAD_INT(cdReadTime / 2);
cdr.ReadRescheduled = 1;
return;
}
cdr.OCUP = 1;
SetResultSize(1);
cdr.StatP |= STATUS_READ|STATUS_ROTATING;
cdr.StatP &= ~STATUS_SEEK;
cdr.Result[0] = cdr.StatP;
cdr.Seeked = SEEK_DONE;
ReadTrack(cdr.SetSectorPlay);
buf = CDR_getBuffer();
if (buf == NULL)
cdr.RErr = -1;
if (cdr.RErr == -1) {
#ifdef CDR_LOG
CDR_LOG("cdrReadInterrupt() Log: err\n");
#endif
memset(cdr.Transfer, 0, DATA_SIZE);
cdr.Stat = DiskError;
cdr.Result[0] |= STATUS_ERROR;
CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
return;
}
memcpy(cdr.Transfer, buf, DATA_SIZE);
CheckPPFCache(cdr.Transfer, cdr.Prev[0], cdr.Prev[1], cdr.Prev[2]);
#ifdef CDR_LOG
CDR_LOG("cdrReadInterrupt() Log: cdr.Transfer %x:%x:%x\n", cdr.Transfer[0], cdr.Transfer[1], cdr.Transfer[2]);
#endif
if ((!cdr.Muted) && (cdr.Mode & MODE_STRSND) && (!Config.Xa) && (cdr.FirstSector != -1)) { // CD-XA
// Firemen 2: Multi-XA files - briefings, cutscenes
if( cdr.FirstSector == 1 && (cdr.Mode & MODE_SF)==0 ) {
cdr.File = cdr.Transfer[4 + 0];
cdr.Channel = cdr.Transfer[4 + 1];
}
if((cdr.Transfer[4 + 2] & 0x4) &&
(cdr.Transfer[4 + 1] == cdr.Channel) &&
(cdr.Transfer[4 + 0] == cdr.File)) {
int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
if (!ret) {
cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
SPU_playADPCMchannel(&cdr.Xa);
cdr.FirstSector = 0;
}
else cdr.FirstSector = -1;
}
}
cdr.SetSectorPlay[2]++;
if (cdr.SetSectorPlay[2] == 75) {
cdr.SetSectorPlay[2] = 0;
cdr.SetSectorPlay[1]++;
if (cdr.SetSectorPlay[1] == 60) {
cdr.SetSectorPlay[1] = 0;
cdr.SetSectorPlay[0]++;
}
}
cdr.Readed = 0;
cdr.ReadRescheduled = 0;
CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
/*
Croc 2: $40 - only FORM1 (*)
Judge Dredd: $C8 - only FORM1 (*)
Sim Theme Park - no adpcm at all (zero)
*/
if (!(cdr.Mode & MODE_STRSND) || !(cdr.Transfer[4+2] & 0x4)) {
cdr.Stat = DataReady;
setIrq();
}
// update for CdlGetlocP
ReadTrack(cdr.SetSectorPlay);
}
/*
cdrRead0:
bit 0,1 - mode
bit 2 - unknown
bit 3 - unknown
bit 4 - unknown
bit 5 - 1 result ready
bit 6 - 1 dma ready
bit 7 - 1 command being processed
*/
unsigned char cdrRead0(void) {
if (cdr.ResultReady)
cdr.Ctrl |= 0x20;
else
cdr.Ctrl &= ~0x20;
if (cdr.OCUP)
cdr.Ctrl |= 0x40;
// else
// cdr.Ctrl &= ~0x40;
// What means the 0x10 and the 0x08 bits? I only saw it used by the bios
cdr.Ctrl |= 0x18;
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr r0: %02x\n", cdr.Ctrl);
#endif
return psxHu8(0x1800) = cdr.Ctrl;
}
void cdrWrite0(unsigned char rt) {
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr w0: %02x\n", rt);
#endif
cdr.Ctrl = (rt & 3) | (cdr.Ctrl & ~3);
}
unsigned char cdrRead1(void) {
if ((cdr.ResultP & 0xf) < cdr.ResultC)
psxHu8(0x1801) = cdr.Result[cdr.ResultP & 0xf];
else
psxHu8(0x1801) = 0;
cdr.ResultP++;
if (cdr.ResultP == cdr.ResultC)
cdr.ResultReady = 0;
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr r1: %02x\n", psxHu8(0x1801));
#endif
return psxHu8(0x1801);
}
void cdrWrite1(unsigned char rt) {
u8 set_loc[3];
int i;
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr w1: %02x\n", rt);
#endif
switch (cdr.Ctrl & 3) {
case 0:
break;
case 3:
cdr.AttenuatorRightToRightT = rt;
return;
default:
return;
}
cdr.Cmd = rt;
cdr.OCUP = 0;
#ifdef CDR_LOG_IO
CDR_LOG_IO("CD1 write: %x (%s)", rt, CmdName[rt]);
if (cdr.ParamC) {
CDR_LOG_IO(" Param[%d] = {", cdr.ParamC);
for (i = 0; i < cdr.ParamC; i++)
CDR_LOG_IO(" %x,", cdr.Param[i]);
CDR_LOG_IO("}\n");
} else {
CDR_LOG_IO("\n");
}
#endif
cdr.ResultReady = 0;
cdr.Ctrl |= 0x80;
// cdr.Stat = NoIntr;
AddIrqQueue(cdr.Cmd, 0x800);
switch (cdr.Cmd) {
case CdlSetloc:
for (i = 0; i < 3; i++)
set_loc[i] = btoi(cdr.Param[i]);
i = msf2sec(cdr.SetSectorPlay);
i = abs(i - (int)msf2sec(set_loc));
if (i > 16)
cdr.Seeked = SEEK_PENDING;
memcpy(cdr.SetSector, set_loc, 3);
cdr.SetSector[3] = 0;
cdr.SetlocPending = 1;
break;
case CdlReadN:
case CdlReadS:
case CdlPause:
StopCdda();
StopReading();
break;
case CdlReset:
case CdlInit:
cdr.Seeked = SEEK_DONE;
StopCdda();
StopReading();
break;
case CdlSetmode:
#ifdef CDR_LOG
CDR_LOG("cdrWrite1() Log: Setmode %x\n", cdr.Param[0]);
#endif
cdr.Mode = cdr.Param[0];
// Squaresoft on PlayStation 1998 Collector's CD Vol. 1
// - fixes choppy movie sound
if( cdr.Play && (cdr.Mode & MODE_CDDA) == 0 )
StopCdda();
break;
}
}
unsigned char cdrRead2(void) {
unsigned char ret;
if (cdr.Readed == 0) {
ret = 0;
} else {
ret = cdr.Transfer[cdr.transferIndex];
cdr.transferIndex++;
adjustTransferIndex();
}
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr r2: %02x\n", ret);
#endif
return ret;
}
void cdrWrite2(unsigned char rt) {
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr w2: %02x\n", rt);
#endif
switch (cdr.Ctrl & 3) {
case 0:
if (cdr.ParamC < 8) // FIXME: size and wrapping
cdr.Param[cdr.ParamC++] = rt;
return;
case 1:
cdr.Reg2 = rt;
setIrq();
return;
case 2:
cdr.AttenuatorLeftToLeftT = rt;
return;
case 3:
cdr.AttenuatorRightToLeftT = rt;
return;
}
}
unsigned char cdrRead3(void) {
if (cdr.Ctrl & 0x1)
psxHu8(0x1803) = cdr.Stat | 0xE0;
else
psxHu8(0x1803) = cdr.Reg2 | 0xE0;
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr r3: %02x\n", psxHu8(0x1803));
#endif
return psxHu8(0x1803);
}
void cdrWrite3(unsigned char rt) {
#ifdef CDR_LOG_IO
CDR_LOG_IO("cdr w3: %02x\n", rt);
#endif
switch (cdr.Ctrl & 3) {
case 0:
break; // transfer
case 1:
cdr.Stat &= ~rt;
if (rt & 0x40)
cdr.ParamC = 0;
return;
case 2:
cdr.AttenuatorLeftToRightT = rt;
return;
case 3:
if (rt & 0x20) {
memcpy(&cdr.AttenuatorLeftToLeft, &cdr.AttenuatorLeftToLeftT, 4);
#ifdef CDR_LOG_IO
CDR_LOG_IO("CD-XA Volume: %02x %02x | %02x %02x\n",
cdr.AttenuatorLeftToLeft, cdr.AttenuatorLeftToRight,
cdr.AttenuatorRightToLeft, cdr.AttenuatorRightToRight);
#endif
}
return;
}
if ((rt & 0x80) && cdr.Readed == 0) {
cdr.Readed = 1;
cdr.transferIndex = 0;
switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
case MODE_SIZE_2328:
case MODE_SIZE_2048:
cdr.transferIndex += 12;
break;
case MODE_SIZE_2340:
cdr.transferIndex += 0;
break;
default:
break;
}
}
}
void psxDma3(u32 madr, u32 bcr, u32 chcr) {
u32 cdsize;
int i;
u8 *ptr;
#ifdef CDR_LOG
CDR_LOG("psxDma3() Log: *** DMA 3 *** %x addr = %x size = %x\n", chcr, madr, bcr);
#endif
switch (chcr) {
case 0x11000000:
case 0x11400100:
if (cdr.Readed == 0) {
#ifdef CDR_LOG
CDR_LOG("psxDma3() Log: *** DMA 3 *** NOT READY\n");
#endif
break;
}
cdsize = (bcr & 0xffff) * 4;
// Ape Escape: bcr = 0001 / 0000
// - fix boot
if( cdsize == 0 )
{
switch (cdr.Mode & (MODE_SIZE_2340|MODE_SIZE_2328)) {
case MODE_SIZE_2340: cdsize = 2340; break;
case MODE_SIZE_2328: cdsize = 2328; break;
default:
case MODE_SIZE_2048: cdsize = 2048; break;
}
}
ptr = (u8 *)PSXM(madr);
if (ptr == NULL) {
#ifdef CDR_LOG
CDR_LOG("psxDma3() Log: *** DMA 3 *** NULL Pointer!\n");
#endif
break;
}
/*
GS CDX: Enhancement CD crash
- Setloc 0:0:0
- CdlPlay
- Spams DMA3 and gets buffer overrun
*/
for(i = 0; i < cdsize; ++i) {
ptr[i] = cdr.Transfer[cdr.transferIndex];
cdr.transferIndex++;
adjustTransferIndex();
}
#ifdef PSXREC
psxCpu->Clear(madr, cdsize / 4);
#endif
// burst vs normal
if( chcr == 0x11400100 ) {
CDRDMA_INT( (cdsize/4) / 4 );
}
else if( chcr == 0x11000000 ) {
CDRDMA_INT( (cdsize/4) * 1 );
}
return;
default:
#ifdef CDR_LOG
CDR_LOG("psxDma3() Log: Unknown cddma %x\n", chcr);
#endif
break;
}
HW_DMA3_CHCR &= SWAP32(~0x01000000);
DMA_INTERRUPT(3);
}
void cdrDmaInterrupt()
{
if (HW_DMA3_CHCR & SWAP32(0x01000000))
{
HW_DMA3_CHCR &= SWAP32(~0x01000000);
DMA_INTERRUPT(3);
}
}
static void getCdInfo(void)
{
u8 tmp;
CDR_getTN(cdr.ResultTN);
CDR_getTD(0, cdr.SetSectorEnd);
tmp = cdr.SetSectorEnd[0];
cdr.SetSectorEnd[0] = cdr.SetSectorEnd[2];
cdr.SetSectorEnd[2] = tmp;
}
void cdrReset() {
memset(&cdr, 0, sizeof(cdr));
cdr.CurTrack = 1;
cdr.File = 1;
cdr.Channel = 1;
cdr.transferIndex = 0;
cdr.Reg2 = 0x1f;
cdr.Stat = NoIntr;
cdr.DriveState = DRIVESTATE_STANDBY;
cdr.StatP = STATUS_ROTATING;
// BIOS player - default values
cdr.AttenuatorLeftToLeft = 0x80;
cdr.AttenuatorLeftToRight = 0x00;
cdr.AttenuatorRightToLeft = 0x00;
cdr.AttenuatorRightToRight = 0x80;
getCdInfo();
}
int cdrFreeze(gzFile f, int Mode) {
u8 tmpp[3];
if (Mode == 0 && Config.Cdda != CDDA_DISABLED)
CDR_stop();
gzfreeze(&cdr, sizeof(cdr));
if (Mode == 1)
cdr.ParamP = cdr.ParamC;
if (Mode == 0) {
getCdInfo();
// read right sub data
memcpy(tmpp, cdr.Prev, 3);
cdr.Prev[0]++;
ReadTrack(tmpp);
if (cdr.Play) {
Find_CurTrack(cdr.SetSectorPlay);
if (Config.Cdda != CDDA_DISABLED)
CDR_play(cdr.SetSectorPlay);
}
}
return 0;
}
void LidInterrupt() {
getCdInfo();
StopCdda();
cdrLidSeekInterrupt();
}
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