1 /*M/////////////////////////////////////////////////////////////////////////////////////// 2 // 3 // IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING. 4 // 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. 8 // 9 // 10 // License Agreement 11 // For Open Source Computer Vision Library 12 // 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. 16 // 17 // Redistribution and use in source and binary forms, with or without modification, 18 // are permitted provided that the following conditions are met: 19 // 20 // * Redistribution's of source code must retain the above copyright notice, 21 // this list of conditions and the following disclaimer. 22 // 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. 26 // 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. 29 // 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. 40 // 41 //M*/ 42 43 #ifndef _RGBE_HDR_H_ 44 #define _RGBE_HDR_H_ 45 46 // posted to http://www.graphics.cornell.edu/~bjw/ 47 // written by Bruce Walter (bjw (at) graphics.cornell.edu) 5/26/95 48 // based on code written by Greg Ward 49 50 #include <stdio.h> 51 52 typedef struct { 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. 60 * defaults to 1.0 */ 61 } rgbe_header_info; 62 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 67 68 /* return codes for rgbe routines */ 69 #define RGBE_RETURN_SUCCESS 0 70 #define RGBE_RETURN_FAILURE -1 71 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); 76 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); 81 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, 85 int num_scanlines); 86 int RGBE_ReadPixels_RLE(FILE *fp, float *data, int scanline_width, 87 int num_scanlines); 88 89 #endif/*_RGBE_HDR_H_*/ 90
