| 1 |
/* RCSid $Id: depthcodec.h,v 2.1 2019/07/26 16:18:06 greg Exp $ */ |
| 2 |
/* |
| 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 |
#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 |
|
| 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_ */ |
