cdriso: look for data files if other one is selected

diff --git a/libpcsxcore/cdriso.c b/libpcsxcore/cdriso.c
index 36ff405..9ca4172 100644 (file)
--- a/libpcsxcore/cdriso.c
+++ b/libpcsxcore/cdriso.c
@@ -1265,8 +1265,33 @@ static long CALLBACK ISOopen(void) {
                SysPrintf("[+sbi]");
        }
 
-       // guess whether it is mode1/2048
        fseek(cdHandle, 0, SEEK_END);
+
+       // maybe user selected metadata file instead of main .bin ..
+       if (ftell(cdHandle) < 2352 * 0x10) {
+               static const char *exts[] = { ".bin", ".BIN", ".img", ".IMG" };
+               char tmp[MAXPATHLEN], *p;
+               FILE *tmpf;
+               size_t i;
+
+               strncpy(tmp, GetIsoFile(), sizeof(tmp));
+               tmp[MAXPATHLEN - 1] = '\0';
+               if (strlen(tmp) >= 4) {
+                       p = tmp + strlen(tmp) - 4;
+                       for (i = 0; i < sizeof(exts) / sizeof(exts[0]); i++) {
+                               strcpy(p, exts[i]);
+                               tmpf = fopen(tmp, "rb");
+                               if (tmpf != NULL) {
+                                       fclose(cdHandle);
+                                       cdHandle = tmpf;
+                                       fseek(cdHandle, 0, SEEK_END);
+                                       break;
+                               }
+                       }
+               }
+       }
+
+       // guess whether it is mode1/2048
        if (ftell(cdHandle) % 2048 == 0) {
                unsigned int modeTest = 0;
                fseek(cdHandle, 0, SEEK_SET);