mirror of https://github.com/opencv/opencv.git
Open Source Computer Vision Library
https://opencv.org/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
3.4 KiB
107 lines
3.4 KiB
/////////////////////////////////////////////////////////////////////////// |
|
// |
|
// Copyright (c) 2002, 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_CONVERT_H |
|
#define INCLUDED_IMF_CONVERT_H |
|
|
|
//----------------------------------------------------------------------------- |
|
// |
|
// Routines for converting between pixel data types, |
|
// with well-defined behavior for exceptional cases, |
|
// without depending on how hardware and operating |
|
// system handle integer overflows and floating-point |
|
// exceptions. |
|
// |
|
//----------------------------------------------------------------------------- |
|
|
|
#include "half.h" |
|
#include "ImfExport.h" |
|
#include "ImfNamespace.h" |
|
|
|
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_ENTER |
|
|
|
|
|
//--------------------------------------------------------- |
|
// Conversion from half or float to unsigned int: |
|
// |
|
// input result |
|
// --------------------------------------------------- |
|
// |
|
// finite, >= 0 input, cast to unsigned int |
|
// (rounds towards zero) |
|
// |
|
// finite, < 0 0 |
|
// |
|
// NaN 0 |
|
// |
|
// +infinity UINT_MAX |
|
// |
|
// -infinity 0 |
|
// |
|
//--------------------------------------------------------- |
|
|
|
IMF_EXPORT unsigned int halfToUint (half h); |
|
IMF_EXPORT unsigned int floatToUint (float f); |
|
|
|
|
|
//--------------------------------------------------------- |
|
// Conversion from unsigned int or float to half: |
|
// |
|
// input result |
|
// --------------------------------------------------- |
|
// |
|
// finite, closest possible half |
|
// magnitude <= HALF_MAX |
|
// |
|
// finite, > HALF_MAX +infinity |
|
// |
|
// finite, < -HALF_MAX -infinity |
|
// |
|
// NaN NaN |
|
// |
|
// +infinity +infinity |
|
// |
|
// -infinity -infinity |
|
// |
|
//--------------------------------------------------------- |
|
|
|
IMF_EXPORT half uintToHalf (unsigned int ui); |
|
IMF_EXPORT half floatToHalf (float f); |
|
|
|
|
|
OPENEXR_IMF_INTERNAL_NAMESPACE_HEADER_EXIT |
|
|
|
|
|
#endif
|
|
|