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/* |
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* Definitions and declarations for 16-bit depth encode/decode |
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* |
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< |
* Include after stdio.h and fvect.h |
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* Include after rtio.h and fvect.h |
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* Includes view.h |
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*/ |
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|
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typedef struct { |
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FILE *finp; /* input stream */ |
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const char *inpname; /* input name */ |
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< |
int format; /* decoded format */ |
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short format; /* decoded format */ |
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short swapped; /* byte-swapped input */ |
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short last_dc; /* last depth-code read */ |
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short use_last; /* use last depth-code next */ |
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long dstart; /* start of data */ |
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long curpos; /* current input position */ |
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double refdepth; /* reference depth */ |
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char depth_unit[32]; /* string including units */ |
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int hdrflags; /* header i/o flags */ |
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short hdrflags; /* header i/o flags */ |
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char inpfmt[MAXFMTLEN]; /* format from header */ |
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short gotview; /* got input view? */ |
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VIEW vw; /* input view parameters */ |
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int gotview; /* got input view? */ |
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RESOLU res; /* input resolution */ |
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} DEPTHCODEC; |
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|
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/* Encode depth as 16-bit signed integer */ |
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#if 1 |
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#define depth2code(d, dref) \ |
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( (d) > (dref) ? (int)(32768.001 - 32768.*(dref)/(d))-1 : \ |
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(d) > .0 ? (int)(32767.*(d)/(dref) - 32768.) : -32768 ) |
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#else |
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extern int depth2code(double d, double dref); |
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#endif |
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|
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/* Decode depth from 16-bit signed integer */ |
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#if 1 |
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#define code2depth(c, dref) \ |
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( (c) <= -32768 ? .0 : (c) >= 32767 ? FHUGE : \ |
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(c) < 0 ? (dref)*(32767.5 + (c))*(1./32767.) : \ |
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(dref)*32768./(32766.5 - (c)) ) |
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#else |
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extern double code2depth(int c, double dref); |
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#endif |
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|
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/* Set codec defaults */ |
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extern void set_dc_defaults(DEPTHCODEC *dcp); |
