/src/FreeImage/Source/OpenEXR/IlmImf/ImfFramesPerSecond.h
https://bitbucket.org/cabalistic/ogredeps/ · C++ Header · 88 lines · 18 code · 9 blank · 61 comment · 0 complexity · ec0a89e82b219c9065e2d8abc1a9fe08 MD5 · raw file
- ///////////////////////////////////////////////////////////////////////////
- //
- // 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_IMF_FRAMES_PER_SECOND_H
- #define INCLUDED_IMF_FRAMES_PER_SECOND_H
- //-----------------------------------------------------------------------------
- //
- // Convenience functions related to the framesPerSecond attribute
- //
- // Functions that return the exact values for commonly used frame rates:
- //
- // name frames per second
- //
- // fps_23_976() 23.976023...
- // fps_24() 24.0 35mm film frames
- // fps_25() 25.0 PAL video frames
- // fps_29_97() 29.970029... NTSC video frames
- // fps_30() 30.0 60Hz HDTV frames
- // fps_47_952() 47.952047...
- // fps_48() 48.0
- // fps_50() 50.0 PAL video fields
- // fps_59_94() 59.940059... NTSC video fields
- // fps_60() 60.0 60Hz HDTV fields
- //
- // Functions that try to convert inexact frame rates into exact ones:
- //
- // Given a frame rate, fps, that is close to one of the pre-defined
- // frame rates fps_23_976(), fps_29_97(), fps_47_952() or fps_59_94(),
- // guessExactFps(fps) returns the corresponding pre-defined frame
- // rate. If fps is not close to one of the pre-defined frame rates,
- // then guessExactFps(fps) returns Rational(fps).
- //
- //-----------------------------------------------------------------------------
- #include <ImfRational.h>
- namespace Imf {
- inline Rational fps_23_976 () {return Rational (24000, 1001);}
- inline Rational fps_24 () {return Rational (24, 1);}
- inline Rational fps_25 () {return Rational (25, 1);}
- inline Rational fps_29_97 () {return Rational (30000, 1001);}
- inline Rational fps_30 () {return Rational (30, 1);}
- inline Rational fps_47_952 () {return Rational (48000, 1001);}
- inline Rational fps_48 () {return Rational (48, 1);}
- inline Rational fps_50 () {return Rational (50, 1);}
- inline Rational fps_59_94 () {return Rational (60000, 1001);}
- inline Rational fps_60 () {return Rational (60, 1);}
- Rational guessExactFps (double fps);
- Rational guessExactFps (const Rational &fps);
- } // namespace Imf
- #endif