| 12 |
|
#ifndef int4 |
| 13 |
|
#define int4 int /* assume 32-bit integers */ |
| 14 |
|
#endif |
| 15 |
– |
#undef NOPROTO |
| 16 |
– |
#define NOPROTO 1 |
| 15 |
|
|
| 16 |
< |
#include "color.h" |
| 16 |
> |
/* request types */ |
| 17 |
> |
#define GD_R_ViewSync 0 /* synchronize current view */ |
| 18 |
> |
#define GD_R_SetView 1 /* set new view parameters */ |
| 19 |
> |
#define GD_R_AddBg 2 /* add background rectangle */ |
| 20 |
> |
#define GD_R_DelBg 3 /* delete background rectangle */ |
| 21 |
> |
#define GD_R_Error 4 /* error to report */ |
| 22 |
> |
#define GD_R_Init 5 /* initialize connection */ |
| 23 |
> |
#define GD_NREQ 6 /* number of requests */ |
| 24 |
|
|
| 20 |
– |
#define GD_TYPELEN 1 /* a type is 1 byte in length */ |
| 21 |
– |
|
| 22 |
– |
/* argument types */ |
| 23 |
– |
#define GD_TY_END 0 /* argument list terminator */ |
| 24 |
– |
#define GD_TY_NAM 1 /* 8-byte (max.) identifier */ |
| 25 |
– |
#define GD_TY_INT 2 /* 4-byte integer */ |
| 26 |
– |
#define GD_TY_FLT 3 /* 4-byte IEEE float */ |
| 27 |
– |
#define GD_TY_DBL 4 /* 8-byte IEEE double */ |
| 28 |
– |
#define GD_TY_CLR 5 /* 4-byte RGBE color value */ |
| 29 |
– |
#define GD_TY_ARR 6 /* 5-byte array prefix */ |
| 30 |
– |
#define GD_TY_STR 7 /* nul-terminated string */ |
| 31 |
– |
#define GD_TY_ARG 8 /* 1-byte argument list prefix */ |
| 32 |
– |
#define GD_TY_ERR 9 /* 1-byte error code */ |
| 33 |
– |
|
| 34 |
– |
#define GD_NTYPES 10 /* number of argument types */ |
| 35 |
– |
|
| 36 |
– |
/* stream argument lengths */ |
| 37 |
– |
#define GD_ARGLEN {0,8,4,4,8,4,5,-1,1,1} |
| 38 |
– |
/* array element lengths (0 == unsupported) */ |
| 39 |
– |
#define GD_ELELEN {0,8,4,4,8,4,sizeof(GDarg),sizeof(char *),0,0} |
| 40 |
– |
|
| 41 |
– |
#define GD_MAXID 8 /* maximum id. length (must be 8) */ |
| 42 |
– |
|
| 43 |
– |
/* |
| 44 |
– |
* A request consists of an argument list, the first of |
| 45 |
– |
* which is always the request name as an 8-char (max.) string. |
| 46 |
– |
* The types of the following arguments must match the required |
| 47 |
– |
* arguments of the display request, or an error will result. |
| 48 |
– |
* |
| 49 |
– |
* Only functions return values, and they return them as a argument |
| 50 |
– |
* list on the client's receiving connection. It is up to the client |
| 51 |
– |
* program to keep track of its function calls and which values correspond |
| 52 |
– |
* to which request functions. |
| 53 |
– |
* |
| 54 |
– |
* An error is indicated with a special GD_TY_ERR code on the receiving |
| 55 |
– |
* connection, and usually indicates something fatal. |
| 56 |
– |
*/ |
| 57 |
– |
|
| 25 |
|
/* error codes */ |
| 26 |
< |
#define GD_ER_UNRECOG 0 /* unrecognized request */ |
| 27 |
< |
#define GD_ER_ARGTYPE 1 /* argument type mismatch */ |
| 28 |
< |
#define GD_ER_ARGMISS 2 /* argument(s) missing */ |
| 26 |
> |
#define GD_OK 0 /* normal return value */ |
| 27 |
> |
#define GD_E_UNRECOG 1 /* unrecognized request */ |
| 28 |
> |
#define GD_E_ARGMISS 2 /* missing argument(s) */ |
| 29 |
> |
#define GD_E_NOMEMOR 3 /* out of memory */ |
| 30 |
> |
#define GD_E_CONNECT 4 /* can't establish connection */ |
| 31 |
> |
#define GD_NERRS 5 /* number of errors */ |
| 32 |
|
|
| 33 |
< |
#define GD_NERRS 3 /* number of errors */ |
| 33 |
> |
extern char *gdErrMsg[GD_NERRS]; /* our error message list */ |
| 34 |
|
|
| 35 |
< |
/* request argument */ |
| 35 |
> |
/* request structure */ |
| 36 |
> |
#define GD_ARG0 4 /* minimum argument length */ |
| 37 |
|
typedef struct { |
| 38 |
< |
BYTE typ; /* argument type */ |
| 39 |
< |
BYTE atyp; /* array subtype if typ==GD_TY_ARR */ |
| 40 |
< |
union { |
| 41 |
< |
char n[GD_MAXID]; /* 8-char (max.) id. */ |
| 42 |
< |
int4 n1, n2; /* used for ID comparison */ |
| 72 |
< |
int4 i; /* 4-byte integer */ |
| 73 |
< |
float f; /* 4-byte IEEE float */ |
| 74 |
< |
double d; /* 8-byte IEEE double */ |
| 75 |
< |
COLR c; /* 4-byte RGBE color */ |
| 76 |
< |
struct array { |
| 77 |
< |
int4 l; /* length */ |
| 78 |
< |
MEM_PTR p; /* values */ |
| 79 |
< |
} a; /* array */ |
| 80 |
< |
char *s; /* nul-terminated string */ |
| 81 |
< |
} v; /* argument value */ |
| 82 |
< |
} GDarg; |
| 38 |
> |
short type; /* request type */ |
| 39 |
> |
unsigned int4 id; /* unique identifier */ |
| 40 |
> |
unsigned int4 alen; /* argument buffer length */ |
| 41 |
> |
unsigned char args[GD_ARG0]; /* followed by the actual arguments */ |
| 42 |
> |
} GDrequest; /* a GL display request */ |
| 43 |
|
|
| 44 |
< |
/* a request and its arguments */ |
| 45 |
< |
typedef struct gdreq { |
| 46 |
< |
struct gdreq *next; /* next request in list */ |
| 47 |
< |
short argc; /* number of arguments */ |
| 48 |
< |
GDarg argv[1]; /* argument list (expandable) */ |
| 49 |
< |
} GDrequest; |
| 44 |
> |
typedef struct { |
| 45 |
> |
int cno; /* connection number */ |
| 46 |
> |
int xres, yres; /* display window size (renderable area) */ |
| 47 |
> |
int fdout; /* send descriptor */ |
| 48 |
> |
FILE *fpin; /* receive stream */ |
| 49 |
> |
} GDconnect; /* display server/client connection */ |
| 50 |
|
|
| 51 |
< |
#define GD_HSIZ 123 /* hash table size (prime) */ |
| 52 |
< |
extern GDrequest *gdProTab[GD_HSIZ]; /* registered prototypes */ |
| 51 |
> |
/* argument lengths */ |
| 52 |
> |
#define GD_L_REAL 5 /* reals are 5 bytes */ |
| 53 |
> |
#define gdStrLen(s) (strlen(s)+1) /* strings are nul-terminated */ |
| 54 |
|
|
| 94 |
– |
#define gdHash(a) ((a)->v.n1 ^ (a)->v.n2) |
| 95 |
– |
|
| 55 |
|
#define gdFree(p) free((MEM_PTR)(p)) |
| 56 |
|
|
| 57 |
< |
typedef struct { |
| 58 |
< |
int xres, yres; /* display window size (renderable area) */ |
| 59 |
< |
} GDserv; /* display structure */ |
| 57 |
> |
extern GDrequest *gdRecvRequest(); |
| 58 |
> |
extern GDconnect *gdOpen(); |
| 59 |
> |
extern int4 gdGetInt(); |
| 60 |
> |
extern double gdGetReal(); |
