From 5a8d6b0a56d035ae7fe7d2f6fc26170483704ccb Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Fri, 15 Aug 2025 20:51:44 +0300
Subject: [PATCH] cdriso: fill trackinfo for metadata-less formats

libretro/pcsx_rearmed#894
---
 libpcsxcore/cdriso.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c
index 4c4bff6f..a917b54d 100644
--- a/libpcsxcore/cdriso.c
+++ b/libpcsxcore/cdriso.c
@@ -1494,6 +1494,14 @@ int ISOopen(const char *fname)
 			isMode1ISO = TRUE;
 		}
 	}
+	if (cdHandle && numtracks == 0) {
+		// assume some metadata-less format
+		numtracks = 1;
+		ti[1].type = DATA;
+		ti[1].start_offset = 0;
+		sec2msf(2 * 75, ti[1].start);
+		sec2msf(isMode1ISO ? size_main / 2048u : size_main / 2352u, ti[1].length);
+	}
 
 	SysPrintf("%s (%lld bytes).\n", image_str, (long long)size_main);
 
-- 
2.47.2