From c4e6218028f70a1289895eba7d6cc37086c20d5c Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sat, 17 Sep 2022 23:28:46 +0300
Subject: [PATCH] cdrom: treat seek the same as other commands

much simpler this way
---
 libpcsxcore/cdrom.c              | 49 +++++++++++++-------------------
 libpcsxcore/cdrom.h              |  2 +-
 libpcsxcore/new_dynarec/emu_if.c |  2 +-
 libpcsxcore/r3000a.c             |  2 +-
 4 files changed, 23 insertions(+), 32 deletions(-)

diff --git a/libpcsxcore/cdrom.c b/libpcsxcore/cdrom.c
index 60e845aa..f042df7d 100644
--- a/libpcsxcore/cdrom.c
+++ b/libpcsxcore/cdrom.c
@@ -243,8 +243,8 @@ static void sec2msf(unsigned int s, u8 *msf) {
 	new_dyna_set_event(PSXINT_CDR, eCycle); \
 }
 
-// cdrPlaySeekReadInterrupt
-#define CDRPLAYSEEKREAD_INT(eCycle, isFirst) { \
+// cdrPlayReadInterrupt
+#define CDRPLAYREAD_INT(eCycle, isFirst) { \
 	u32 e_ = eCycle; \
 	psxRegs.interrupt |= (1 << PSXINT_CDREAD); \
 	if (isFirst) \
@@ -578,32 +578,13 @@ static void cdrReadInterrupt(void);
 static void cdrPrepCdda(s16 *buf, int samples);
 static void cdrAttenuate(s16 *buf, int samples, int stereo);
 
-void cdrPlaySeekReadInterrupt(void)
+void cdrPlayReadInterrupt(void)
 {
 	if (cdr.Reading) {
 		cdrReadInterrupt();
 		return;
 	}
 
-	if (!cdr.Play && (cdr.StatP & STATUS_SEEK)) {
-		if (cdr.Stat) {
-			CDR_LOG_I("cdrom: seek stat hack\n");
-			CDRPLAYSEEKREAD_INT(0x1000, 1);
-			return;
-		}
-		SetResultSize(1);
-		cdr.StatP |= STATUS_ROTATING;
-		SetPlaySeekRead(cdr.StatP, 0);
-		cdr.Result[0] = cdr.StatP;
-		cdr.Stat = Complete;
-		setIrq(0x1002);
-
-		Find_CurTrack(cdr.SetSectorPlay);
-		ReadTrack(cdr.SetSectorPlay);
-		cdr.TrackChanged = FALSE;
-		return;
-	}
-
 	if (!cdr.Play) return;
 
 	CDR_LOG( "CDDA - %d:%d:%d\n",
@@ -642,7 +623,7 @@ void cdrPlaySeekReadInterrupt(void)
 	// update for CdlGetlocP/autopause
 	generate_subq(cdr.SetSectorPlay);
 
-	CDRPLAYSEEKREAD_INT(cdReadTime, 0);
+	CDRPLAYREAD_INT(cdReadTime, 0);
 }
 
 #define CMD_PART2           0x100
@@ -797,7 +778,7 @@ void cdrInterrupt(void) {
 			// BIOS player - set flag again
 			cdr.Play = TRUE;
 
-			CDRPLAYSEEKREAD_INT(cdReadTime + seekTime, 1);
+			CDRPLAYREAD_INT(cdReadTime + seekTime, 1);
 			start_rotating = 1;
 			break;
 
@@ -988,7 +969,7 @@ void cdrInterrupt(void) {
 		case CdlSeekP:
 			StopCdda();
 			StopReading();
-			SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
+			SetPlaySeekRead(cdr.StatP, STATUS_SEEK | STATUS_ROTATING);
 
 			seekTime = cdrSeekTime(cdr.SetSector);
 			memcpy(cdr.SetSectorPlay, cdr.SetSector, 4);
@@ -1005,10 +986,20 @@ void cdrInterrupt(void) {
 			Rockman X5 = 0.5-4x
 			- fix capcom logo
 			*/
-			CDRPLAYSEEKREAD_INT(cdReadTime + seekTime, 1);
+			second_resp_time = cdReadTime + seekTime;
 			start_rotating = 1;
 			break;
 
+		case CdlSeekL + CMD_PART2:
+		case CdlSeekP + CMD_PART2:
+			SetPlaySeekRead(cdr.StatP, 0);
+			cdr.Stat = Complete;
+
+			Find_CurTrack(cdr.SetSectorPlay);
+			ReadTrack(cdr.SetSectorPlay);
+			cdr.TrackChanged = FALSE;
+			break;
+
 		case CdlTest:
 		case CdlTest + CMD_WHILE_NOT_READY:
 			switch (cdr.Param[0]) {
@@ -1103,7 +1094,7 @@ void cdrInterrupt(void) {
 			// - fixes new game
 			ReadTrack(cdr.SetSectorPlay);
 
-			CDRPLAYSEEKREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime, 1);
+			CDRPLAYREAD_INT(((cdr.Mode & 0x80) ? (cdReadTime) : cdReadTime * 2) + seekTime, 1);
 
 			SetPlaySeekRead(cdr.StatP, STATUS_SEEK);
 			start_rotating = 1;
@@ -1297,7 +1288,7 @@ static void cdrReadInterrupt(void)
 		ReadTrack(cdr.SetSectorPlay);
 	}
 
-	CDRPLAYSEEKREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
+	CDRPLAYREAD_INT((cdr.Mode & MODE_SPEED) ? (cdReadTime / 2) : cdReadTime, 0);
 }
 
 /*
@@ -1636,7 +1627,7 @@ 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, 1);
+				CDRPLAYREAD_INT((cdr.Mode & 0x80) ? (cdReadTime / 2) : cdReadTime, 1);
 		}
 
 		if ((cdr.freeze_ver & 0xffffff00) != 0x63647200) {
diff --git a/libpcsxcore/cdrom.h b/libpcsxcore/cdrom.h
index 52bd21c0..ee0b4d4b 100644
--- a/libpcsxcore/cdrom.h
+++ b/libpcsxcore/cdrom.h
@@ -48,7 +48,7 @@ extern "C" {
 void cdrReset();
 
 void cdrInterrupt(void);
-void cdrPlaySeekReadInterrupt(void);
+void cdrPlayReadInterrupt(void);
 void cdrLidSeekInterrupt(void);
 void cdrDmaInterrupt(void);
 void LidInterrupt(void);
diff --git a/libpcsxcore/new_dynarec/emu_if.c b/libpcsxcore/new_dynarec/emu_if.c
index 89656001..b679d9df 100644
--- a/libpcsxcore/new_dynarec/emu_if.c
+++ b/libpcsxcore/new_dynarec/emu_if.c
@@ -55,7 +55,7 @@ typedef void (irq_func)();
 static irq_func * const irq_funcs[] = {
 	[PSXINT_SIO]	= sioInterrupt,
 	[PSXINT_CDR]	= cdrInterrupt,
-	[PSXINT_CDREAD]	= cdrPlaySeekReadInterrupt,
+	[PSXINT_CDREAD]	= cdrPlayReadInterrupt,
 	[PSXINT_GPUDMA]	= gpuInterrupt,
 	[PSXINT_MDECOUTDMA] = mdec1Interrupt,
 	[PSXINT_SPUDMA]	= spuInterrupt,
diff --git a/libpcsxcore/r3000a.c b/libpcsxcore/r3000a.c
index c1987d6a..ea4fc089 100644
--- a/libpcsxcore/r3000a.c
+++ b/libpcsxcore/r3000a.c
@@ -139,7 +139,7 @@ void psxBranchTest() {
 		if (psxRegs.interrupt & (1 << PSXINT_CDREAD)) { // cdr read
 			if ((psxRegs.cycle - psxRegs.intCycle[PSXINT_CDREAD].sCycle) >= psxRegs.intCycle[PSXINT_CDREAD].cycle) {
 				psxRegs.interrupt &= ~(1 << PSXINT_CDREAD);
-				cdrPlaySeekReadInterrupt();
+				cdrPlayReadInterrupt();
 			}
 		}
 		if (psxRegs.interrupt & (1 << PSXINT_GPUDMA)) { // gpu dma
-- 
2.39.5