cdrom: try to eliminate playback timing drifting

[pcsx_rearmed.git] / libpcsxcore / cdrom.c

diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c
index fb526b4..184d07a 100644 (file)
--- a/libpcsxcore/cdrom.c
+++ b/libpcsxcore/cdrom.c
@@ -242,11 +242,15 @@ static void sec2msf(unsigned int s, u8 *msf) {
 }
 
 // cdrPlaySeekReadInterrupt
-#define CDRPLAYSEEKREAD_INT(eCycle) { \
+#define CDRPLAYSEEKREAD_INT(eCycle, isFirst) { \
+       u32 e_ = eCycle; \
        psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
-       psxRegs.intCycle[PSXINT_CDREAD].cycle = eCycle; \
-       psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
-       new_dyna_set_event(PSXINT_CDREAD, eCycle); \
+       if (isFirst) \
+               psxRegs.intCycle[PSXINT_CDREAD].sCycle = psxRegs.cycle; \
+       else \
+               psxRegs.intCycle[PSXINT_CDREAD].sCycle += psxRegs.intCycle[PSXINT_CDREAD].cycle; \
+       psxRegs.intCycle[PSXINT_CDREAD].cycle = e_; \
+       new_dyna_set_event_abs(PSXINT_CDREAD, psxRegs.intCycle[PSXINT_CDREAD].sCycle + e_); \
 }
 
 // cdrLidSeekInterrupt
@@ -588,7 +592,7 @@ void cdrPlaySeekReadInterrupt(void)
        if (!cdr.Play && (cdr.StatP & STATUS_SEEK)) {
                if (cdr.Stat) {
                        CDR_LOG_I("cdrom: seek stat hack\n");
-                       CDRPLAYSEEKREAD_INT(0x1000);
+                       CDRPLAYSEEKREAD_INT(0x1000, 1);
                        return;
                }
                SetResultSize(1);
@@ -640,7 +644,7 @@ void cdrPlaySeekReadInterrupt(void)
                }
        }
 
-       CDRPLAYSEEKREAD_INT(cdReadTime);
+       CDRPLAYSEEKREAD_INT(cdReadTime, 0);
 
        // update for CdlGetlocP/autopause
        generate_subq(cdr.SetSectorPlay);
@@ -766,7 +770,7 @@ void cdrInterrupt(void) {
                        // BIOS player - set flag again
                        cdr.Play = TRUE;
 
-                       CDRPLAYSEEKREAD_INT(cdReadTime + seekTime);
+                       CDRPLAYSEEKREAD_INT(cdReadTime + seekTime, 1);
                        start_rotating = 1;
                        break;
 
@@ -974,7 +978,7 @@ void cdrInterrupt(void) {
                        Rockman X5 = 0.5-4x
                        - fix capcom logo
                        */
-                       CDRPLAYSEEKREAD_INT(cdReadTime + seekTime);
+                       CDRPLAYSEEKREAD_INT(cdReadTime + seekTime, 1);
                        start_rotating = 1;
                        break;
 
@@ -1072,7 +1076,7 @@ void cdrInterrupt(void) {
                        // - fixes new game
                        ReadTrack(cdr.SetSectorPlay);
 
-                       CDRPLAYSEEKREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime);
+                       CDRPLAYSEEKREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime, 1);
 
                        SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
                        start_rotating = 1;
@@ -1168,7 +1172,7 @@ static void cdrReadInterrupt(void)
 
        if (cdr.Irq || cdr.Stat) {
                CDR_LOG_I("cdrom: read stat hack %02x %x\n", cdr.Irq, cdr.Stat);
-               CDRPLAYSEEKREAD_INT(2048);
+               CDRPLAYSEEKREAD_INT(2048, 1);
                return;
        }
 
@@ -1235,7 +1239,7 @@ static void cdrReadInterrupt(void)
 
        cdr.Readed = 0;
 
-       CDRPLAYSEEKREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
+       CDRPLAYSEEKREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
 
        /*
        Croc 2: $40 - only FORM1 (*)
@@ -1588,7 +1592,7 @@ int cdrFreeze(void *f, int Mode) {
                        if (!Config.Cdda)
                                CDR_play(cdr.SetSectorPlay);
                        if (psxRegs.interrupt & (1 << PSXINT_CDRPLAY_OLD))
-                               CDRPLAYSEEKREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime);
+                               CDRPLAYSEEKREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime, 1);
                }
 
                if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {