Ticket #9083: 0001-Implement-BMediaRoster-RollNode.patch

headers/private/media/ServerInterface.h

@@ -88 +88 @@
     NODE_SET_RUN_MODE,
     NODE_TIME_WARP,
     NODE_PREROLL,
+    NODE_ROLL,
     NODE_SET_TIMESOURCE,
     NODE_GET_TIMESOURCE,
     NODE_REQUEST_COMPLETED,
@@ -899 +900 @@
     bigtime_t               performance_time;
 };
 
+struct node_roll_command : command_data {
+    bigtime_t               start_performance_time;
+    bigtime_t               stop_performance_time;
+    bigtime_t               seek_media_time;
+};
+
 struct node_set_run_mode_command : command_data {
     BMediaNode::run_mode    mode;
 };

src/kits/media/MediaNode.cpp

@@ -632 +632 @@
             return B_OK;
         }
 
+        case NODE_ROLL:
+        {
+            const node_roll_command *command
+                = static_cast<const node_roll_command *>(data);
+
+            TRACE("BMediaNode::HandleMessage NODE_ROLL, node %ld\n",
+                fNodeID);
+
+            if (command->seek_media_time != B_INFINITE_TIMEOUT)
+                Seek(command->seek_media_time,
+                    command->start_performance_time);
+
+            Start(command->start_performance_time);
+            Stop(command->stop_performance_time, false);
+            return B_OK;
+        }
+
         case NODE_SET_TIMESOURCE:
         {
             const node_set_timesource_command *command = static_cast<const node_set_timesource_command *>(data);

src/kits/media/MediaRoster.cpp

@@ -1400 +1400 @@
 BMediaRoster::RollNode(const media_node& node, bigtime_t startPerformance,
     bigtime_t stopPerformance, bigtime_t atMediaTime)
 {
-    UNIMPLEMENTED();
-    return B_ERROR;
+    CALLED();
+    if (IS_INVALID_NODE(node))
+        return B_MEDIA_BAD_NODE;
+
+    TRACE("BMediaRoster::RollNode, node %" B_PRId32 ", at start perf %"
+        B_PRId64 ", at stop perf %" B_PRId64 ", at media time %"
+        B_PRId64 "\n", node.node, startPerformance,
+        stopPerformance, atMediaTime);
+
+    node_roll_command command;
+    command.start_performance_time = startPerformance;
+    command.stop_performance_time = stopPerformance;
+    command.seek_media_time = atMediaTime;
+
+    return write_port(node.port, NODE_ROLL, &command, sizeof(command));
 }