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root/radiance/ray/src/common/depthcodec.h
Revision: 2.2
Committed: Fri Jul 26 17:04:12 2019 UTC (4 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.1: +8 -7 lines
Log Message:
Added control for stderr output

File Contents

# User Rev Content
1 greg 2.2 /* RCSid $Id: depthcodec.h,v 2.1 2019/07/26 16:18:06 greg Exp $ */
2 greg 2.1 /*
3     * Definitions and declarations for 16-bit depth encode/decode
4     *
5     * Include after stdio.h and fvect.h
6     * Includes view.h
7     */
8    
9     #ifndef _RAD_DEPTHCODEC_H_
10     #define _RAD_DEPTHCODEC_H_
11    
12     #include "view.h"
13    
14     #ifdef __cplusplus
15     extern "C" {
16     #endif
17    
18     #define DEPTHSTR "REFDEPTH="
19     #define LDEPTHSTR 9
20     #define DEPTH16FMT "16-bit_encoded_depth"
21    
22 greg 2.2 #define HF_HEADIN 0x1 /* expect input header */
23     #define HF_HEADOUT 0x2 /* write header to stdout */
24     #define HF_RESIN 0x4 /* expect resolution string */
25     #define HF_RESOUT 0x8 /* write resolution to stdout */
26     #define HF_STDERR 0x10 /* report errors to stderr */
27     #define HF_ALL 0x1f /* all flags above */
28     #define HF_ENCODE 0x20 /* we are encoding */
29 greg 2.1
30     /* Structure for encoding/decoding depths and world points */
31     typedef struct {
32     FILE *finp; /* input stream */
33     const char *inpname; /* input name */
34     int format; /* decoded format */
35     long dstart; /* start of data */
36     long curpos; /* current input position */
37     double refdepth; /* reference depth */
38     char depth_unit[32]; /* string including units */
39     int hdrflags; /* header i/o flags */
40     char inpfmt[MAXFMTLEN]; /* format from header */
41     VIEW vw; /* input view parameters */
42     int gotview; /* got input view? */
43     RESOLU res; /* input resolution */
44     } DEPTHCODEC;
45    
46     /* Encode depth as 16-bit signed integer */
47     #define depth2code(d, dref) \
48     ( (d) > (dref) ? (int)(32768.001 - 32768.*(dref)/(d))-1 : \
49     (d) > .0 ? (int)(32767.*(d)/(dref) - 32768.) : -32768 )
50    
51     /* Decode depth from 16-bit signed integer */
52     extern double code2depth(int c, double dref);
53    
54     /* Set codec defaults */
55     extern void set_dc_defaults(DEPTHCODEC *dcp);
56    
57     /* Load/copy header */
58     extern int process_dc_header(DEPTHCODEC *dcp, int ac, char *av[]);
59    
60     /* Check that we have what we need to decode depths */
61     extern int check_decode_depths(DEPTHCODEC *dcp);
62    
63     /* Decode next depth pixel from input */
64     extern double decode_depth_next(DEPTHCODEC *dcp);
65    
66     /* Seek to the indicated pixel position */
67     extern int seek_dc_pix(DEPTHCODEC *dcp, int x, int y);
68    
69     /* Read and decode depth for the given pixel */
70     extern double decode_depth_pix(DEPTHCODEC *dcp, int x, int y);
71    
72     /* Check that we have what we need to decode world positions */
73     extern int check_decode_worldpos(DEPTHCODEC *dcp);
74    
75     /* Compute world position from pixel position and depth */
76     extern int compute_worldpos(FVECT wpos, DEPTHCODEC *dcp,
77     int x, int y, double d);
78    
79     /* Decode the next world position from input */
80     int decode_worldpos_next(FVECT wpos, DEPTHCODEC *dcp);
81    
82     /* Decode depth and compute world position for the given pixel */
83     extern int get_worldpos_pix(FVECT wpos, DEPTHCODEC *dcp, int x, int y);
84    
85     extern char *progname; /* global argv[0] (set by main) */
86    
87     #ifdef __cplusplus
88     }
89     #endif
90     #endif /* _RAD_DEPTHCODEC_H_ */