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 * s3dlib.h
 * Copyright (C) 2004-2008 Simon Wunderlich <dotslash@packetmixer.de>
 * This file is part of the s3d API, the API of s3d (the 3d network display server).
 * See http://s3d.berlios.de/ for more updates.
 * The s3d API is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 * The s3d API is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * GNU Lesser General Public License for more details.
 * You should have received a copy of the GNU Lesser General Public License
 * along with the s3d API; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

#include <stdint.h>
#include "config.h"
#include "hash.h"
#ifdef __APPLE__
#ifdef SHM
#undef SHM

#ifndef S3DUNUSED
#define S3DUNUSED(x) (x)__attribute__((unused))
#elif defined(UNUSEDPARAM_OMIT)
#define S3DUNUSED(x) /* x */
#define S3DUNUSED(x) x

#define S3DEXPORT __attribute__ ((visibility("default")))
#define S3DEXPORT

#define VLOW 1
#define LOW  2
#define MED  3
#define HIGH 4
#define VHIGH 5

#define DBM_MAX   1024  /*  maximum size of a debug message string */
#define S3D_NAME_MAX 256   /*  limit for names [e.g. process names] */
#define OF_TURN_ON   1   /*  logical or */
#define OF_TURN_OFF  2   /*  logical ?! */
#define OF_TURN_SWAP  3   /*  logical ?! */
#define TIMEOUT   100000
#define MAX_CB   256   /*  as much as there are callbacks */

#ifndef NULL
#if !defined(__cplusplus)
#define NULL ((void*)0)
#define NULL 0
#endif /* !defined(__cplusplus) */
#endif /* NULL */

#define CON_NULL 0
#define CON_SHM  1
#define CON_TCP  2
#define SHM_SIZE  sizeof(key_t)*2    /* space for the keys */
#define RB_STD_SIZE  1024*512
#define RB_OVERHEAD  sizeof(struct buf_t)
/*  the callback buiffer: */
extern int cb_lock; /* holds the recursion depth */

extern int _s3d_ready; /* is 1 after s3d_init() was sucessful */
extern s3d_cb s3d_cb_list[MAX_CB];
/*  some local prototypes: */
/*  char *s3d_open_file(char *fname); */
int net_prot_in(uint8_t opcode, uint16_t length, char *buf);

/* what we get from the wires */
struct s3d_texshm {
      int32_t oid, tex, shmid;
      uint16_t tw, th, w, h;
} __attribute__((__packed__));
/* for internal use. */
struct s3d_tex {
      struct s3d_texshm tshm;
      char *buf;
} __attribute__((__packed__));

#ifdef DEBUG
S3DEXPORT void s3dprintf(int relevance, const char *fmt, ...);
S3DEXPORT void errdn(int relevance, const char *func, int en);
S3DEXPORT void errds(int relevance, const char *func, const char *fmt, ...);
static __inline__ void s3dprintf(int S3DUNUSED(relevance),
                                 const char *S3DUNUSED(fmt), ...) {}
static __inline__ void errdn(int S3DUNUSED(relevance),
                             const char *S3DUNUSED(func),
                             int S3DUNUSED(en)) {}
static __inline__ void errds(int S3DUNUSED(relevance),
                             const char *S3DUNUSED(func),
                             const char *S3DUNUSED(fmt), ...) {}

void errn(const char *func, int en);
void errs(const char *func, const char *msg);

/*  fontselect.c */
char *s3d_findfont(const char *mask);
/*  object_queue.c */
int _queue_init(void);
int _queue_fill(void);
int _queue_new_object(unsigned int oid);
unsigned int _queue_want_object(void);
int _queue_quit(void);
/* io.c */
#ifdef SIGS
extern int _s3d_sigio;
/*  network.c */
extern int con_type;
int net_send(uint8_t opcode, char *buf, uint16_t length);
int s3d_net_init(char *urlc);
/* proto_out.c */
int _s3d_update_texture(int object, uint32_t tex, uint16_t xpos, uint16_t ypos, uint16_t w, uint16_t h);
#ifdef TCP
/* tcp.c */
int _tcp_init(char *sv, int pn);
int _tcp_quit(void);
int _s3d_tcp_net_receive(void);
int tcp_writen(char *str, int s);
int tcp_readn(char *str, int s);
/* shm_ringbuf.c */
#ifdef SHM
struct buf_t {
      uint32_t start, end, bufsize; /* start/end of the data */
unsigned int shm_write(struct buf_t *rb, char *buf, unsigned int n);
unsigned int shm_read(struct buf_t *rb, char *buf, unsigned int n);
/* shm.c */
int _shm_init(char *ftoken);
int _shm_quit(void);
int _shm_net_receive(void);
int shm_writen(char *str, int s);
int shm_readn(char *str, int s);
/* freetype.c */
struct t_buf {
      float *vbuf;
      uint32_t *pbuf;
      int pn, vn;
      float xoff;

/* tesselate.c */
struct tessp_t {
      int next, prev, done;
int _s3d_tesselate(struct tessp_t *t, struct t_buf *b);
/* texture.c */
int _s3d_texture_init(void);
int _s3d_texture_quit(void);
void _s3d_handle_texshm(struct s3d_texshm *tshm);
int _s3d_load_texture_shm(int object, uint32_t tid, uint16_t xpos, uint16_t ypos, uint16_t w, uint16_t h, const uint8_t *data);

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