90 lines
3.9 KiB
C++
90 lines
3.9 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived 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 "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef _RGBE_HDR_H_
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#define _RGBE_HDR_H_
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// posted to http://www.graphics.cornell.edu/~bjw/
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// written by Bruce Walter (bjw@graphics.cornell.edu) 5/26/95
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// based on code written by Greg Ward
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#include <stdio.h>
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typedef struct {
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int valid; /* indicate which fields are valid */
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char programtype[16]; /* listed at beginning of file to identify it
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* after "#?". defaults to "RGBE" */
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float gamma; /* image has already been gamma corrected with
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* given gamma. defaults to 1.0 (no correction) */
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float exposure; /* a value of 1.0 in an image corresponds to
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* <exposure> watts/steradian/m^2.
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* defaults to 1.0 */
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} rgbe_header_info;
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/* flags indicating which fields in an rgbe_header_info are valid */
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#define RGBE_VALID_PROGRAMTYPE 0x01
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#define RGBE_VALID_GAMMA 0x02
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#define RGBE_VALID_EXPOSURE 0x04
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/* return codes for rgbe routines */
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#define RGBE_RETURN_SUCCESS 0
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#define RGBE_RETURN_FAILURE -1
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/* read or write headers */
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/* you may set rgbe_header_info to null if you want to */
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int RGBE_WriteHeader(FILE *fp, int width, int height, rgbe_header_info *info);
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int RGBE_ReadHeader(FILE *fp, int *width, int *height, rgbe_header_info *info);
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/* read or write pixels */
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/* can read or write pixels in chunks of any size including single pixels*/
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int RGBE_WritePixels(FILE *fp, float *data, int numpixels);
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int RGBE_ReadPixels(FILE *fp, float *data, int numpixels);
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/* read or write run length encoded files */
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/* must be called to read or write whole scanlines */
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int RGBE_WritePixels_RLE(FILE *fp, float *data, int scanline_width,
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int num_scanlines);
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int RGBE_ReadPixels_RLE(FILE *fp, float *data, int scanline_width,
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int num_scanlines);
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#endif/*_RGBE_HDR_H_*/
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