X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=libpcsxcore%2Fcdrom.c;h=1e8f950aa2fe8b6ffb1bc2ec183623c4ccd17c82;hb=1f035e278151a3e29b3d2077f7242787fc541216;hp=3e31c0aeb63fe491bbb5613b13da395d01f6a2c9;hpb=0d9eed84e1484897dc1673bf534a2c1e7ec3ee54;p=pcsx_rearmed.git

diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c
index 3e31c0ae..1e8f950a 100644
--- a/libpcsxcore/cdrom.c
+++ b/libpcsxcore/cdrom.c
@@ -48,7 +48,7 @@ cdrStruct cdr;
 static unsigned char *pTransfer;
 
 /* CD-ROM magic numbers */
-#define CdlSync        0
+#define CdlSync        0  /* nocash documentation : "Uh, actually, returns error code 40h = Invalid Command...?" */
 #define CdlNop         1
 #define CdlSetloc      2
 #define CdlPlay        3
@@ -496,6 +496,7 @@ void cdrPlayInterrupt()
 		if (cdr.SetlocPending) {
 			memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 			cdr.SetlocPending = 0;
+			cdr.m_locationChanged = TRUE;
 		}
 		Find_CurTrack(cdr.SetSectorPlay);
 		ReadTrack(cdr.SetSectorPlay);
@@ -527,7 +528,15 @@ void cdrPlayInterrupt()
 		}
 	}
 
-	CDRMISC_INT(cdReadTime);
+	if (cdr.m_locationChanged)
+	{
+		CDRMISC_INT(cdReadTime * 30);
+		cdr.m_locationChanged = FALSE;
+	}
+	else
+	{
+		CDRMISC_INT(cdReadTime);
+	}
 
 	// update for CdlGetlocP/autopause
 	generate_subq(cdr.SetSectorPlay);
@@ -539,6 +548,7 @@ void cdrInterrupt() {
 	int start_rotating = 0;
 	int error = 0;
 	int delay;
+	unsigned int seekTime = 0;
 
 	// Reschedule IRQ
 	if (cdr.Stat) {
@@ -565,10 +575,6 @@ void cdrInterrupt() {
 	cdr.Irq = 0;
 
 	switch (Irq) {
-		case CdlSync:
-			// TOOD: sometimes/always return error?
-			break;
-
 		case CdlNop:
 			if (cdr.DriveState != DRIVESTATE_LID_OPEN)
 				cdr.StatP &= ~STATUS_SHELLOPEN;
@@ -588,6 +594,7 @@ void cdrInterrupt() {
 			if (cdr.SetlocPending) {
 				memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 				cdr.SetlocPending = 0;
+				cdr.m_locationChanged = TRUE;
 			}
 
 			// BIOS CD Player
@@ -909,8 +916,11 @@ void cdrInterrupt() {
 		case CdlReadN:
 		case CdlReadS:
 			if (cdr.SetlocPending) {
+				seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(cdr.SetSector)) * (cdReadTime / 200);
+				if(seekTime > 1000000) seekTime = 1000000;
 				memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
 				cdr.SetlocPending = 0;
+				cdr.m_locationChanged = TRUE;
 			}
 			Find_CurTrack(cdr.SetSectorPlay);
 
@@ -948,7 +958,7 @@ void cdrInterrupt() {
 				// - fix cutscene speech (startup)
 
 				// ??? - use more accurate seek time later
-				CDREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1);
+				CDREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime * 1) + seekTime);
 			} else {
 				cdr.StatP |= STATUS_READ;
 				cdr.StatP &= ~STATUS_SEEK;
@@ -959,7 +969,7 @@ void cdrInterrupt() {
 			cdr.Result[0] = cdr.StatP;
 			start_rotating = 1;
 			break;
-
+		case CdlSync:
 		default:
 			CDR_LOG_I("Invalid command: %02x\n", Irq);
 			error = ERROR_INVALIDCMD;
@@ -1102,9 +1112,14 @@ 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);
@@ -1127,7 +1142,13 @@ void cdrReadInterrupt() {
 
 	cdr.Readed = 0;
 
-	CDREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime);
+	uint32_t delay = (cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime;
+	if (cdr.m_locationChanged) {
+		CDREAD_INT(delay * 30);
+		cdr.m_locationChanged = FALSE;
+	} else {
+		CDREAD_INT(delay);
+	}
 
 	/*
 	Croc 2: $40 - only FORM1 (*)
@@ -1465,6 +1486,8 @@ 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;