1
/*M///////////////////////////////////////////////////////////////////////////////////////
3
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
5
// By downloading, copying, installing or using the software you agree to this license.
6
// If you do not agree to this license, do not download, install,
7
// copy or use the software.
11
// For Open Source Computer Vision Library
13
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
14
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
15
// Third party copyrights are property of their respective owners.
17
// Redistribution and use in source and binary forms, with or without modification,
18
// are permitted provided that the following conditions are met:
20
// * Redistribution's of source code must retain the above copyright notice,
21
// this list of conditions and the following disclaimer.
23
// * Redistribution's in binary form must reproduce the above copyright notice,
24
// this list of conditions and the following disclaimer in the documentation
25
// and/or other materials provided with the distribution.
27
// * The name of the copyright holders may not be used to endorse or promote products
28
// derived from this software without specific prior written permission.
30
// This software is provided by the copyright holders and contributors "as is" and
31
// any express or implied warranties, including, but not limited to, the implied
32
// warranties of merchantability and fitness for a particular purpose are disclaimed.
33
// In no event shall the Intel Corporation or contributors be liable for any direct,
34
// indirect, incidental, special, exemplary, or consequential damages
35
// (including, but not limited to, procurement of substitute goods or services;
36
// loss of use, data, or profits; or business interruption) however caused
37
// and on any theory of liability, whether in contract, strict liability,
38
// or tort (including negligence or otherwise) arising in any way out of
39
// the use of this software, even if advised of the possibility of such damage.
46
// posted to http://www.graphics.cornell.edu/~bjw/
47
// written by Bruce Walter (bjw@graphics.cornell.edu) 5/26/95
48
// based on code written by Greg Ward
53
int valid; /* indicate which fields are valid */
54
char programtype[16]; /* listed at beginning of file to identify it
55
* after "#?". defaults to "RGBE" */
56
float gamma; /* image has already been gamma corrected with
57
* given gamma. defaults to 1.0 (no correction) */
58
float exposure; /* a value of 1.0 in an image corresponds to
59
* <exposure> watts/steradian/m^2.
63
/* flags indicating which fields in an rgbe_header_info are valid */
64
#define RGBE_VALID_PROGRAMTYPE 0x01
65
#define RGBE_VALID_GAMMA 0x02
66
#define RGBE_VALID_EXPOSURE 0x04
68
/* return codes for rgbe routines */
69
#define RGBE_RETURN_SUCCESS 0
70
#define RGBE_RETURN_FAILURE -1
72
/* read or write headers */
73
/* you may set rgbe_header_info to null if you want to */
74
int RGBE_WriteHeader(FILE *fp, int width, int height, rgbe_header_info *info);
75
int RGBE_ReadHeader(FILE *fp, int *width, int *height, rgbe_header_info *info);
77
/* read or write pixels */
78
/* can read or write pixels in chunks of any size including single pixels*/
79
int RGBE_WritePixels(FILE *fp, float *data, int numpixels);
80
int RGBE_ReadPixels(FILE *fp, float *data, int numpixels);
82
/* read or write run length encoded files */
83
/* must be called to read or write whole scanlines */
84
int RGBE_WritePixels_RLE(FILE *fp, float *data, int scanline_width,
86
int RGBE_ReadPixels_RLE(FILE *fp, float *data, int scanline_width,
89
#endif/*_RGBE_HDR_H_*/