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/src/FreeImage/Source/OpenEXR/IlmImf/ImfFramesPerSecond.cpp

https://bitbucket.org/cabalistic/ogredeps/
C++ | 75 lines | 24 code | 13 blank | 38 comment | 4 complexity | 552ad0005c1643d2ad054881384974ea MD5 | raw file
 1///////////////////////////////////////////////////////////////////////////
 2//
 3// Copyright (c) 2006, Industrial Light & Magic, a division of Lucas
 4// Digital Ltd. LLC
 5// 
 6// All rights reserved.
 7// 
 8// Redistribution and use in source and binary forms, with or without
 9// modification, are permitted provided that the following conditions are
10// met:
11// *       Redistributions of source code must retain the above copyright
12// notice, this list of conditions and the following disclaimer.
13// *       Redistributions in binary form must reproduce the above
14// copyright notice, this list of conditions and the following disclaimer
15// in the documentation and/or other materials provided with the
16// distribution.
17// *       Neither the name of Industrial Light & Magic nor the names of
18// its contributors may be used to endorse or promote products derived
19// from this software without specific prior written permission. 
20// 
21// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33///////////////////////////////////////////////////////////////////////////
34
35//-----------------------------------------------------------------------------
36//
37//	Convenience functions related to the framesPerSecond attribute
38//
39//-----------------------------------------------------------------------------
40
41#include <ImfFramesPerSecond.h>
42#include "ImathFun.h"
43
44using namespace Imath;
45
46namespace Imf {
47
48Rational
49guessExactFps (double fps)
50{
51    return guessExactFps (Rational (fps));
52}
53
54
55Rational
56guessExactFps (const Rational &fps)
57{
58    const double e = 0.002;
59
60    if (abs (double (fps) - double (fps_23_976())) < e)
61	return fps_23_976();
62
63    if (abs (double (fps) - double (fps_29_97())) < e)
64	return fps_29_97();
65
66    if (abs (double (fps) - double (fps_47_952())) < e)
67	return fps_47_952();
68
69    if (abs (double (fps) - double (fps_59_94())) < e)
70	return fps_59_94();
71
72    return fps;
73}
74
75} // namespace Imf