Merge pull request #558 from gameblabla/cdrom_fixes_libretro_popo
[pcsx_rearmed.git] / libpcsxcore / cdrom.c
index 47d45cd..93d2fa4 100644 (file)
@@ -58,7 +58,7 @@ static unsigned char *pTransfer;
 #define CdlStandby     7
 #define CdlStop        8
 #define CdlPause       9
-#define CdlInit        10
+#define CdlReset       10
 #define CdlMute        11
 #define CdlDemute      12
 #define CdlSetfilter   13
@@ -76,19 +76,19 @@ static unsigned char *pTransfer;
 #define CdlTest        25
 #define CdlID          26
 #define CdlReadS       27
-#define CdlReset       28
+#define CdlInit        28
 #define CdlGetQ        29
 #define CdlReadToc     30
 
 char *CmdName[0x100]= {
     "CdlSync",     "CdlNop",       "CdlSetloc",  "CdlPlay",
     "CdlForward",  "CdlBackward",  "CdlReadN",   "CdlStandby",
-    "CdlStop",     "CdlPause",     "CdlInit",    "CdlMute",
+    "CdlStop",     "CdlPause",     "CdlReset",    "CdlMute",
     "CdlDemute",   "CdlSetfilter", "CdlSetmode", "CdlGetmode",
     "CdlGetlocL",  "CdlGetlocP",   "CdlReadT",   "CdlGetTN",
     "CdlGetTD",    "CdlSeekL",     "CdlSeekP",   "CdlSetclock",
     "CdlGetclock", "CdlTest",      "CdlID",      "CdlReadS",
-    "CdlReset",    NULL,           "CDlReadToc", NULL
+    "CdlInit",    NULL,           "CDlReadToc", NULL
 };
 
 unsigned char Test04[] = { 0 };
@@ -445,7 +445,7 @@ static void cdrPlayInterrupt_Autopause()
 
                StopCdda();
        }
-       else if (cdr.Mode & MODE_REPORT) {
+       else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
 
                cdr.Result[0] = cdr.StatP;
                cdr.Result[1] = cdr.subq.Track;
@@ -490,6 +490,7 @@ void cdrPlayInterrupt()
                cdr.Seeked = SEEK_DONE;
                if (cdr.Irq == 0) {
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        setIrq();
                }
 
@@ -591,10 +592,12 @@ void cdrInterrupt() {
                do_CdlPlay:
                case CdlPlay:
                        StopCdda();
-                       if (cdr.Seeked == SEEK_PENDING) {
-                               // XXX: wrong, should seek instead..
-                               cdr.Seeked = SEEK_DONE;
-                       }
+                       /* It would set it to SEEK_DONE*/
+                       cdr.Seeked = SEEK_PENDING;
+
+                       cdr.FastBackward = 0;
+                       cdr.FastForward = 0;
+
                        if (cdr.SetlocPending) {
                                memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
                                cdr.SetlocPending = 0;
@@ -657,11 +660,9 @@ void cdrInterrupt() {
                case CdlForward:
                        // TODO: error 80 if stopped
                        cdr.Stat = Complete;
-
+                       cdr.RErr = 1;
                        // GameShark CD Player: Calls 2x + Play 2x
-                       if( cdr.FastForward == 0 ) cdr.FastForward = 2;
-                       else cdr.FastForward++;
-
+                       cdr.FastForward = 1;
                        cdr.FastBackward = 0;
                        break;
 
@@ -669,9 +670,7 @@ 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;
 
@@ -686,6 +685,7 @@ void cdrInterrupt() {
 
                case CdlStandby + 0x100:
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        break;
 
                case CdlStop:
@@ -713,6 +713,7 @@ void cdrInterrupt() {
                        cdr.StatP &= ~STATUS_ROTATING;
                        cdr.Result[0] = cdr.StatP;
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        break;
 
                case CdlPause:
@@ -734,16 +735,20 @@ void cdrInterrupt() {
                        cdr.StatP &= ~STATUS_READ;
                        cdr.Result[0] = cdr.StatP;
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        break;
 
-               case CdlInit:
-                       AddIrqQueue(CdlInit + 0x100, cdReadTime * 6);
+               case CdlReset:
+                       cdr.Muted = FALSE;
+                       cdr.Mode = 0x20; /* Needed for This is Football 2, Pooh's Party and possibly others. */
+                       AddIrqQueue(CdlReset + 0x100, 4100000);
                        no_busy_error = 1;
                        start_rotating = 1;
                        break;
 
-               case CdlInit + 0x100:
+               case CdlReset + 0x100:
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        break;
 
                case CdlMute:
@@ -794,6 +799,7 @@ void cdrInterrupt() {
 
                case CdlReadT + 0x100:
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        break;
 
                case CdlGetTN:
@@ -891,9 +897,10 @@ void cdrInterrupt() {
                        /* This adds the string "PCSX" in Playstation bios boot screen */
                        memcpy((char *)&cdr.Result[4], "PCSX", 4);
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        break;
 
-               case CdlReset:
+               case CdlInit:
                        // yes, it really sets STATUS_SHELLOPEN
                        cdr.StatP |= STATUS_SHELLOPEN;
                        cdr.DriveState = DRIVESTATE_RESCAN_CD;
@@ -915,6 +922,7 @@ void cdrInterrupt() {
 
                case CdlReadToc + 0x100:
                        cdr.Stat = Complete;
+                       cdr.RErr = 1;
                        no_busy_error = 1;
                        break;
 
@@ -922,7 +930,22 @@ 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;
@@ -955,21 +978,26 @@ void cdrInterrupt() {
                        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 / 2) : cdReadTime * 1) + seekTime);
-                       } else {
-                               cdr.StatP |= STATUS_READ;
-                               cdr.StatP &= ~STATUS_SEEK;
-
-                               CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
-                       }
+                       /*      
+                               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;
+                       CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
 
                        cdr.Result[0] = cdr.StatP;
                        start_rotating = 1;
@@ -1093,9 +1121,9 @@ void cdrReadInterrupt() {
 
        buf = CDR_getBuffer();
        if (buf == NULL)
-               cdr.RErr = -1;
+               cdr.RErr = 0;
 
-       if (cdr.RErr == -1) {
+       if (cdr.RErr == 0) {
                CDR_LOG_I("cdrReadInterrupt() Log: err\n");
                memset(cdr.Transfer, 0, DATA_SIZE);
                cdr.Stat = DiskError;
@@ -1117,9 +1145,14 @@ void cdrReadInterrupt() {
                        cdr.Channel = cdr.Transfer[4 + 1];
                }
 
+               /* Gameblabla 
+                * Skips playing on channel 255.
+                * Fixes missing audio in Blue's Clues : Blue's Big Musical. (Should also fix Taxi 2)
+                * TODO : Check if this is the proper behaviour.
+                * */
                if((cdr.Transfer[4 + 2] & 0x4) &&
                         (cdr.Transfer[4 + 1] == cdr.Channel) &&
-                        (cdr.Transfer[4 + 0] == cdr.File)) {
+                        (cdr.Transfer[4 + 0] == cdr.File) && cdr.Channel != 255) {
                        int ret = xa_decode_sector(&cdr.Xa, cdr.Transfer+4, cdr.FirstSector);
                        if (!ret) {
                                cdrAttenuate(cdr.Xa.pcm, cdr.Xa.nsamples, cdr.Xa.stereo);
@@ -1273,8 +1306,8 @@ void cdrWrite1(unsigned char rt) {
                StopReading();
                break;
 
-       case CdlReset:
        case CdlInit:
+       case CdlReset:
                cdr.Seeked = SEEK_DONE;
                StopCdda();
                StopReading();