4 files changed, 17 insertions, 0 deletions
diff --git a/stream/cache2.c b/stream/cache2.c
index 7744f2cba9..6c11ec9812 100644
--- a/stream/cache2.c
+++ b/stream/cache2.c
@@ -323,6 +323,9 @@ static int cache_execute_control(cache_vars_t *s) {
     case STREAM_CTRL_GET_LANG:
       s->control_res = s->stream->control(s->stream, s->control, (void *)&s->control_lang_arg);
       break;
+    case STREAM_CTRL_MANAGES_TIMELINE:
+      s->control_res = s->stream->control(s->stream, s->control, NULL);
+      break;
     default:
       s->control_res = STREAM_UNSUPPORTED;
       break;
@@ -659,6 +662,7 @@ int cache_do_control(stream_t *stream, int cmd, void *arg) {
     case STREAM_CTRL_GET_NUM_ANGLES:
     case STREAM_CTRL_GET_ANGLE:
     case STREAM_CTRL_GET_SIZE:
+    case STREAM_CTRL_MANAGES_TIMELINE:
     case -2:
       s->control = cmd;
       break;
@@ -707,6 +711,8 @@ int cache_do_control(stream_t *stream, int cmd, void *arg) {
     case STREAM_CTRL_GET_LANG:
       *(struct stream_lang_req *)arg = s->control_lang_arg;
       break;
+    case STREAM_CTRL_MANAGES_TIMELINE:
+      break;
   }
   return s->control_res;
 }
diff --git a/stream/stream.c b/stream/stream.c
index 8e38d1983e..36594d8556 100644
--- a/stream/stream.c
+++ b/stream/stream.c
@@ -769,3 +769,8 @@ struct bstr stream_read_complete(struct stream *s, void *talloc_ctx,
                buf, total_read
     };
 }
+
+bool stream_manages_timeline(struct stream *s)
+{
+    return stream_control(s, STREAM_CTRL_MANAGES_TIMELINE, NULL) == STREAM_OK;
+}
diff --git a/stream/stream.h b/stream/stream.h
index c47452aeb9..b6fe40b56a 100644
--- a/stream/stream.h
+++ b/stream/stream.h
@@ -101,6 +101,8 @@
 #define STREAM_CTRL_GET_CACHE_FILL 16
 #define STREAM_CTRL_GET_CACHE_IDLE 17
 #define STREAM_CTRL_RECONNECT 18
+// DVD/Bluray, signal general support for GET_CURRENT_TIME etc.
+#define STREAM_CTRL_MANAGES_TIMELINE 19
 
 struct stream_lang_req {
     int type;     // STREAM_AUDIO, STREAM_SUB
@@ -406,6 +408,8 @@ int stream_read_internal(stream_t *s, void *buf, int len);
 /// Internal seek function bypassing the stream buffer
 int stream_seek_internal(stream_t *s, int64_t newpos);
 
+bool stream_manages_timeline(stream_t *s);
+
 extern int dvd_title;
 extern int dvd_angle;
 
diff --git a/stream/stream_dvd.c b/stream/stream_dvd.c
index 0207ae3969..0b85e320ba 100644
--- a/stream/stream_dvd.c
+++ b/stream/stream_dvd.c
@@ -712,6 +712,8 @@ static int control(stream_t *stream,int cmd,void* arg)
             snprintf(req->name, sizeof(req->name), "%c%c", lang >> 8, lang);
             return STREAM_OK;
         }
+        case STREAM_CTRL_MANAGES_TIMELINE:
+            return STREAM_OK;
     }
     return STREAM_UNSUPPORTED;
 }