move EmptyVideoTimer to platform/video_timer.

1 files changed, 48 insertions, 0 deletions

diff --git a/platform/video_timer.cpp b/platform/video_timer.cpp
index 8f731f58a3..8a2fab5c9d 100644
--- a/platform/video_timer.cpp
+++ b/platform/video_timer.cpp
@@ -1,5 +1,7 @@
 #include "video_timer.hpp"
 
+#include "../std/bind.hpp"
+
 VideoTimer::VideoTimer(TFrameFn fn) : m_frameFn(fn), m_state(EStopped)
 {}
 
@@ -20,3 +22,49 @@ void VideoTimer::setFrameFn(TFrameFn fn)
 {
   m_frameFn = fn;
 }
+
+namespace
+{
+  void empty() {}
+}
+
+EmptyVideoTimer::EmptyVideoTimer()
+    : base_t(bind(&empty))
+{
+}
+
+EmptyVideoTimer::~EmptyVideoTimer()
+{
+  stop();
+}
+
+void EmptyVideoTimer::start()
+{
+  if (m_state == EStopped)
+    m_state = ERunning;
+}
+
+void EmptyVideoTimer::resume()
+{
+  if (m_state == EPaused)
+  {
+    m_state = EStopped;
+    start();
+  }
+}
+
+void EmptyVideoTimer::pause()
+{
+  stop();
+  m_state = EPaused;
+}
+
+void EmptyVideoTimer::stop()
+{
+  if (m_state == ERunning)
+    m_state = EStopped;
+}
+
+void EmptyVideoTimer::perform()
+{
+}