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Open Source Computer Vision Library
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94 lines
3.8 KiB
94 lines
3.8 KiB
/////////////////////////////////////////////////////////////////////////// |
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// |
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// Copyright (c) 2006, Industrial Light & Magic, a division of Lucas |
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// Digital Ltd. LLC |
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// |
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// All rights reserved. |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Industrial Light & Magic nor the names of |
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// its contributors may be used to endorse or promote products derived |
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// from this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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// |
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/////////////////////////////////////////////////////////////////////////// |
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#ifndef INCLUDED_IMF_FRAMES_PER_SECOND_H |
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#define INCLUDED_IMF_FRAMES_PER_SECOND_H |
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//----------------------------------------------------------------------------- |
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// |
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// Convenience functions related to the framesPerSecond attribute |
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// |
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// Functions that return the exact values for commonly used frame rates: |
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// |
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// name frames per second |
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// |
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// fps_23_976() 23.976023... |
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// fps_24() 24.0 35mm film frames |
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// fps_25() 25.0 PAL video frames |
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// fps_29_97() 29.970029... NTSC video frames |
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// fps_30() 30.0 60Hz HDTV frames |
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// fps_47_952() 47.952047... |
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// fps_48() 48.0 |
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// fps_50() 50.0 PAL video fields |
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// fps_59_94() 59.940059... NTSC video fields |
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// fps_60() 60.0 60Hz HDTV fields |
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// |
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// Functions that try to convert inexact frame rates into exact ones: |
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// |
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// Given a frame rate, fps, that is close to one of the pre-defined |
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// frame rates fps_23_976(), fps_29_97(), fps_47_952() or fps_59_94(), |
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// guessExactFps(fps) returns the corresponding pre-defined frame |
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// rate. If fps is not close to one of the pre-defined frame rates, |
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// then guessExactFps(fps) returns Rational(fps). |
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// |
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//----------------------------------------------------------------------------- |
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#include "ImfRational.h" |
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#include "ImfNamespace.h" |
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#include "ImfExport.h" |
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER |
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inline Rational fps_23_976 () {return Rational (24000, 1001);} |
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inline Rational fps_24 () {return Rational (24, 1);} |
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inline Rational fps_25 () {return Rational (25, 1);} |
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inline Rational fps_29_97 () {return Rational (30000, 1001);} |
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inline Rational fps_30 () {return Rational (30, 1);} |
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inline Rational fps_47_952 () {return Rational (48000, 1001);} |
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inline Rational fps_48 () {return Rational (48, 1);} |
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inline Rational fps_50 () {return Rational (50, 1);} |
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inline Rational fps_59_94 () {return Rational (60000, 1001);} |
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inline Rational fps_60 () {return Rational (60, 1);} |
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IMF_EXPORT Rational guessExactFps (double fps); |
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IMF_EXPORT Rational guessExactFps (const Rational &fps); |
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OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT |
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#endif
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