1 files changed, 27 insertions, 0 deletions
diff --git a/src/Dolphin/dvd/dvdidutils.c b/src/Dolphin/dvd/dvdidutils.c
new file mode 100644
index 0000000..3c58e98
--- /dev/null
+++ b/src/Dolphin/dvd/dvdidutils.c
@@ -0,0 +1,27 @@
+#include <dolphin/DVDPriv.h>
+#include <dolphin/dvd.h>
+#include <dolphin/dvd_regs.h>
+
+#include <string.h>
+
+BOOL DVDCompareDiskID(DVDDiskID* id1, DVDDiskID* id2) {
+
+  if (id1->gameName[0] && id2->gameName[0] && strncmp(&id1->gameName[0], &id2->gameName[0], 4)) {
+    return FALSE;
+  }
+
+  if (!id1->company[0] || !id2->company[0] || strncmp(&id1->company[0], &id2->company[0], 2)) {
+    return FALSE;
+  }
+
+  if (id1->diskNumber != 0xff && id2->diskNumber != 0xff && id1->diskNumber != id2->diskNumber) {
+    return FALSE;
+  }
+
+  if (id1->gameVersion != 0xff && id2->gameVersion != 0xff &&
+      id1->gameVersion != id2->gameVersion) {
+    return FALSE;
+  }
+
+  return TRUE;
+}