Moved system time source code into media_addon_server.

It is now a real node.
Shadow timesources finally have the correct control port id.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4604 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/servers/media_addon/SystemTimeSource.cpp

@@ -0,0 +1,66 @@
+
+#include "debug.h"
+#include "SystemTimeSource.h"
+
+
+SystemTimeSource::SystemTimeSource()
+ :	BMediaNode("System Clock"),
+ 	BTimeSource(),
+ 	fControlThread(-1)
+{
+	TRACE("SystemTimeSource::SystemTimeSource\n");
+}
+
+SystemTimeSource::~SystemTimeSource()
+{
+	TRACE("SystemTimeSource::~SystemTimeSource enter\n");
+	
+	close_port(ControlPort());
+	if (fControlThread != -1) {
+		status_t err;
+		wait_for_thread(fControlThread, &err);
+	}
+	TRACE("SystemTimeSource::~SystemTimeSource exit\n");
+}
+
+BMediaAddOn*
+SystemTimeSource::AddOn(int32 * internal_id) const
+{
+	return NULL;
+}
+	
+status_t
+SystemTimeSource::TimeSourceOp(const time_source_op_info & op, void * _reserved)
+{
+	TRACE("######## SystemTimeSource::TimeSourceOp\n");
+	bigtime_t real = RealTime();
+	PublishTime(real, real, 1.0);
+	return B_OK;
+}
+
+
+/* virtual */ void
+SystemTimeSource::NodeRegistered()
+{
+	ASSERT(fControlThread == -1);
+	fControlThread = spawn_thread(_ControlThreadStart, "System Clock control", 12, this);
+	resume_thread(fControlThread);
+}
+
+int32
+SystemTimeSource::_ControlThreadStart(void *arg)
+{
+	reinterpret_cast<SystemTimeSource *>(arg)->ControlThread();
+	return 0;
+}
+
+void
+SystemTimeSource::ControlThread()
+{
+	TRACE("SystemTimeSource::ControlThread() enter\n");
+	status_t err;
+	do {
+		err = WaitForMessage(B_INFINITE_TIMEOUT);
+	} while (err == B_OK || err == B_ERROR);
+	TRACE("SystemTimeSource::ControlThread() exit\n");
+}