Disabled external gits

cs440-acg/ext/openexr/OpenEXR_Viewers/playexr/Timer.h

@@ -0,0 +1,115 @@
+///////////////////////////////////////////////////////////////////////////
+//
+// Copyright (c) 2006, Industrial Light & Magic, a division of Lucas
+// Digital Ltd. LLC
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// *       Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// *       Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// *       Neither the name of Industrial Light & Magic nor the names of
+// its contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission. 
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+///////////////////////////////////////////////////////////////////////////
+
+#ifndef INCLUDED_TIMER_H
+#define INCLUDED_TIMER_H
+
+//----------------------------------------------------------------------------
+//
+//	Timing control for the display thread of the playExr prgram
+//
+//----------------------------------------------------------------------------
+
+#ifdef _WIN32
+    #include <windows.h>
+#else
+    #include <sys/time.h>
+#endif
+
+enum PlayState
+{
+    PREPARE_TO_RUN,
+    RUNNING,
+    PREPARE_TO_PAUSE,
+    PAUSE,
+};
+
+
+class Timer
+{
+  public:
+
+    //------------
+    // Constructor
+    //------------
+
+    Timer ();
+
+
+    //--------------------------------------------------------
+    // Timing control to maintain the desired frame rate:
+    // the redrawWindow() function in the display thread calls
+    // waitUntilNextFrameIsDue() before displaying each frame.
+    //
+    // If playState == RUNNING, then waitUntilNextFrameIsDue()
+    // sleeps until the apropriate amount of time has elapsed
+    // since the last call to waitUntilNextFrameIsDue().
+    // If playState != RUNNING, then waitUntilNextFrameIsDue()
+    // returns immediately.
+    //--------------------------------------------------------
+
+    void	waitUntilNextFrameIsDue ();
+
+
+    //-------------------------------------------------
+    // Set and get the frame rate, in frames per second
+    //-------------------------------------------------
+
+    void	setDesiredFrameRate (float fps);
+    float	actualFrameRate ();
+
+
+    //-------------------
+    // Current play state
+    //-------------------
+
+    PlayState	playState;
+
+
+  private:
+
+    float	_spf;				// desired frame rate,
+    						// in seconds per frame
+
+    timeval	_lastFrameTime;			// time when we displayed the
+    						// last frame
+
+    float	_timingError;			// cumulative timing error
+
+    timeval	_lastFpsFrameTime;		// state to keep track of the
+    int		_framesSinceLastFpsFrame;	// actual frame trate, averaged
+    float	_actualFrameRate;		// over several frames
+};
+
+#endif