drc: something works on arm64
[pcsx_rearmed.git] / libpcsxcore / cdrom.c
index 4e312fd..753c512 100644 (file)
@@ -46,6 +46,7 @@
 
 cdrStruct cdr;
 static unsigned char *pTransfer;
+static s16 read_buf[CD_FRAMESIZE_RAW/2];
 
 /* CD-ROM magic numbers */
 #define CdlSync        0  /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
@@ -382,7 +383,7 @@ static void ReadTrack(const u8 *time) {
 
        CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
 
-       cdr.RErr = CDR_readTrack(tmp);
+       cdr.NoErr = CDR_readTrack(tmp);
        memcpy(cdr.Prev, tmp, 3);
 
        if (CheckSBI(time))
@@ -434,8 +435,7 @@ static void cdrPlayInterrupt_Autopause()
        u32 abs_lev_max = 0;
        boolean abs_lev_chselect;
        u32 i;
-       s16 read_buf[CD_FRAMESIZE_RAW/2];
-       
+
        if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
                CDR_LOG( "CDDA STOP\n" );
 
@@ -450,9 +450,8 @@ static void cdrPlayInterrupt_Autopause()
 
                StopCdda();
        }
-       else if (cdr.Mode & MODE_REPORT) {
+       else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
                CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
-
                cdr.Result[0] = cdr.StatP;
                cdr.Result[1] = cdr.subq.Track;
                cdr.Result[2] = cdr.subq.Index;
@@ -533,6 +532,12 @@ void cdrPlayInterrupt()
                cdrPlayInterrupt_Autopause();
 
        if (!cdr.Play) return;
+       
+       if (CDR_readCDDA && !cdr.Muted && cdr.Mode & MODE_REPORT) {
+               cdrAttenuate(read_buf, CD_FRAMESIZE_RAW / 4, 1);
+               if (SPU_playCDDAchannel)
+                       SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW);
+       }
 
        cdr.SetSectorPlay[2]++;
        if (cdr.SetSectorPlay[2] == 75) {
@@ -565,6 +570,8 @@ void cdrInterrupt() {
        int error = 0;
        int delay;
        unsigned int seekTime = 0;
+       u8 set_loc[3];
+       int i;
 
        // Reschedule IRQ
        if (cdr.Stat) {
@@ -598,6 +605,31 @@ void cdrInterrupt() {
                        break;
 
                case CdlSetloc:
+                       CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
+
+                       // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
+                       if (((cdr.Param[0] & 0x0F) > 0x09) || (cdr.Param[0] > 0x99) || ((cdr.Param[1] & 0x0F) > 0x09) || (cdr.Param[1] >= 0x60) || ((cdr.Param[2] & 0x0F) > 0x09) || (cdr.Param[2] >= 0x75))
+                       {
+                               CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
+                               error = ERROR_INVALIDARG;
+                               goto set_error;
+                       }
+                       else
+                       {
+                               for (i = 0; i < 3; i++)
+                               {
+                                       set_loc[i] = btoi(cdr.Param[i]);
+                               }
+
+                               i = msf2sec(cdr.SetSectorPlay);
+                               i = abs(i - msf2sec(set_loc));
+                               if (i > 16)
+                                       cdr.Seeked = SEEK_PENDING;
+
+                               memcpy(cdr.SetSector, set_loc, 3);
+                               cdr.SetSector[3] = 0;
+                               cdr.SetlocPending = 1;
+                       }
                        break;
 
                do_CdlPlay:
@@ -607,6 +639,10 @@ void cdrInterrupt() {
                                // XXX: wrong, should seek instead..
                                cdr.Seeked = SEEK_DONE;
                        }
+                       
+                       cdr.FastBackward = 0;
+                       cdr.FastForward = 0;
+
                        if (cdr.SetlocPending) {
                                memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
                                cdr.SetlocPending = 0;
@@ -671,9 +707,7 @@ void cdrInterrupt() {
                        cdr.Stat = Complete;
 
                        // GameShark CD Player: Calls 2x + Play 2x
-                       if( cdr.FastForward == 0 ) cdr.FastForward = 2;
-                       else cdr.FastForward++;
-
+                       cdr.FastForward = 1;
                        cdr.FastBackward = 0;
                        break;
 
@@ -681,9 +715,7 @@ void cdrInterrupt() {
                        cdr.Stat = Complete;
 
                        // GameShark CD Player: Calls 2x + Play 2x
-                       if( cdr.FastBackward == 0 ) cdr.FastBackward = 2;
-                       else cdr.FastBackward++;
-
+                       cdr.FastBackward = 1;
                        cdr.FastForward = 0;
                        break;
 
@@ -809,9 +841,6 @@ void cdrInterrupt() {
                case CdlGetlocP:
                        SetResultSize(8);
                        memcpy(&cdr.Result, &cdr.subq, 8);
-
-                       if (!cdr.Play && !cdr.Reading)
-                               cdr.Result[1] = 0; // HACK?
                        break;
 
                case CdlReadT: // SetSession?
@@ -950,7 +979,22 @@ void cdrInterrupt() {
                case CdlReadS:
                        if (cdr.SetlocPending) {
                                seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
-                               if(seekTime > 1000000) seekTime = 1000000;
+                               /*
+                               * Gameblabla :
+                               * It was originally set to 1000000 for Driver, however it is not high enough for Worms Pinball
+                               * and was unreliable for that game.
+                               * I also tested it against Mednafen and Driver's titlescreen music starts 25 frames later, not immediatly.
+                               * 
+                               * Obviously, this isn't perfect but right now, it should be a bit better.
+                               * Games to test this against if you change that setting :
+                               * - Driver (titlescreen music delay and retry mission)
+                               * - Worms Pinball (Will either not boot or crash in the memory card screen)
+                               * - Viewpoint (short pauses if the delay in the ingame music is too long)
+                               * 
+                               * It seems that 3386880 * 5 is too much for Driver's titlescreen and it starts skipping.
+                               * However, 1000000 is not enough for Worms Pinball to reliably boot.
+                               */
+                               if(seekTime > 3386880 * 2) seekTime = 3386880 * 2;
                                memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
                                cdr.SetlocPending = 0;
                                cdr.m_locationChanged = TRUE;
@@ -982,22 +1026,29 @@ void cdrInterrupt() {
                        - fixes cutscenes
                        C-12 - Final Resistance - doesn't like seek
                        */
+                       
+                       /*      
+                               By nicolasnoble from PCSX Redux :
+                               "It LOOKS like this logic is wrong, therefore disabling it with `&& false` for now.
+                               For "PoPoLoCrois Monogatari II", the game logic will soft lock and will never issue GetLocP to detect
+                               the end of its XA streams, as it seems to assume ReadS will not return a status byte with the SEEK
+                               flag set. I think the reasonning is that since it's invalid to call GetLocP while seeking, the game
+                               tries to protect itself against errors by preventing from issuing a GetLocP while it knows the
+                               last status was "seek". But this makes the logic just softlock as it'll never get a notification
+                               about the fact the drive is done seeking and the read actually started.
+
+                               In other words, this state machine here is probably wrong in assuming the response to ReadS/ReadN is
+                               done right away. It's rather when it's done seeking, and the read has actually started. This probably
+                               requires a bit more work to make sure seek delays are processed properly.
+                               Checked with a few games, this seems to work fine."
+                               
+                               Gameblabla additional notes :
+                               This still needs the "+ seekTime" that PCSX Redux doesn't have for the Driver "retry" mission error.
+                       */
+                       cdr.StatP |= STATUS_READ;
+                       cdr.StatP &= ~STATUS_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 / 2) : cdReadTime * 1) + seekTime);
-                       } else {
-                               cdr.StatP |= STATUS_READ;
-                               cdr.StatP &= ~STATUS_SEEK;
-
-                               CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
-                       }
+                       CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
 
                        cdr.Result[0] = cdr.StatP;
                        start_rotating = 1;
@@ -1121,9 +1172,9 @@ void cdrReadInterrupt() {
 
        buf = CDR_getBuffer();
        if (buf == NULL)
-               cdr.RErr = -1;
+               cdr.NoErr = 0;
 
-       if (cdr.RErr == -1) {
+       if (!cdr.NoErr) {
                CDR_LOG_I("cdrReadInterrupt() Log: err\n");
                memset(cdr.Transfer, 0, DATA_SIZE);
                cdr.Stat = DiskError;
@@ -1156,6 +1207,19 @@ void cdrReadInterrupt() {
                        int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
                        if (!ret) {
                                cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
+                               /*
+                                * Gameblabla -
+                                * This is a hack for Megaman X4, Castlevania etc...
+                                * that regressed from the new m_locationChanged and CDROM timings changes.
+                                * It is mostly noticeable in Castevania however and the stuttering can be very jarring.
+                                * 
+                                * According to PCSX redux authors, we shouldn't cause a location change if
+                                * the sector difference is too small. 
+                                * I attempted to go with that approach but came empty handed.
+                                * So for now, let's just set cdr.m_locationChanged to false when playing back any ADPCM samples.
+                                * This does not regress Crash Team Racing's intro at least.
+                               */
+                               cdr.m_locationChanged = FALSE;
                                SPU_playADPCMchannel(&cdr.Xa);
                                cdr.FirstSector = 0;
                        }
@@ -1249,9 +1313,6 @@ unsigned char cdrRead1(void) {
 }
 
 void cdrWrite1(unsigned char rt) {
-       u8 set_loc[3];
-       int i;
-
        CDR_LOG_IO("cdr w1: %02x\n", rt);
 
        switch (cdr.Ctrl & 3) {
@@ -1285,31 +1346,6 @@ void cdrWrite1(unsigned char rt) {
        AddIrqQueue(cdr.Cmd, 0x800);
 
        switch (cdr.Cmd) {
-       case CdlSetloc:
-               CDR_LOG("CDROM setloc command (%02X, %02X, %02X)\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
-
-               // MM must be BCD, SS must be BCD and <0x60, FF must be BCD and <0x75
-               if (((cdr.Param[0] & 0x0F) > 0x09) || (cdr.Param[0] > 0x99) || ((cdr.Param[1] & 0x0F) > 0x09) || (cdr.Param[1] >= 0x60) || ((cdr.Param[2] & 0x0F) > 0x09) || (cdr.Param[2] >= 0x75))
-               {
-                       CDR_LOG("Invalid/out of range seek to %02X:%02X:%02X\n", cdr.Param[0], cdr.Param[1], cdr.Param[2]);
-               }
-               else
-               {
-                       for (i = 0; i < 3; i++)
-                       {
-                               set_loc[i] = btoi(cdr.Param[i]);
-                       }
-
-                       i = msf2sec(cdr.SetSectorPlay);
-                       i = abs(i - 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:
@@ -1531,9 +1567,7 @@ void cdrReset() {
        cdr.DriveState = DRIVESTATE_STANDBY;
        cdr.StatP = STATUS_ROTATING;
        pTransfer = cdr.Transfer;
-       cdr.SetlocPending = 0;
-       cdr.m_locationChanged = FALSE;
-
+       
        // BIOS player - default values
        cdr.AttenuatorLeftToLeft = 0x80;
        cdr.AttenuatorLeftToRight = 0x00;