xextproto-7.0.2/lbxopts.h

   1 /* $Xorg: lbxopts.h,v 1.3 2000/08/18 04:05:45 coskrey Exp $ */
   2 /*
   3  * Copyright 1994 Network Computing Devices, Inc.
   4  *
   5  * Permission to use, copy, modify, distribute, and sell this software and
   6  * its documentation for any purpose is hereby granted without fee, provided
   7  * that the above copyright notice appear in all copies and that both that
   8  * copyright notice and this permission notice appear in supporting
   9  * documentation, and that the name Network Computing Devices, Inc. not be
  10  * used in advertising or publicity pertaining to distribution of this
  11  * software without specific, written prior permission.
  12  *
  13  * THIS SOFTWARE IS PROVIDED `AS-IS'.  NETWORK COMPUTING DEVICES, INC.,
  14  * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT
  15  * LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  16  * PARTICULAR PURPOSE, OR NONINFRINGEMENT.  IN NO EVENT SHALL NETWORK
  17  * COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
  18  * SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA,
  19  * OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF
  20  * WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN
  21  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  22  *
  23  */
  24 /* $XFree86: xc/include/extensions/lbxopts.h,v 1.5 2001/01/17 17:53:21 dawes Exp $ */
  25
  26 #ifndef _LBX_OPTS_H_
  27 #define _LBX_OPTS_H_
  28
  29 /*
  30  * Negotiable configuration options
  31  */
  32 #define LBX_OPT_DELTA_PROXY             0
  33 #define LBX_OPT_DELTA_SERVER            1
  34 #define LBX_OPT_STREAM_COMP             2
  35 #define LBX_OPT_BITMAP_COMP             3
  36 #define LBX_OPT_PIXMAP_COMP             4
  37 #define LBX_OPT_MSG_COMP                5       /* aka "squishing" */
  38 #define LBX_OPT_USE_TAGS                6
  39 #define LBX_OPT_CMAP_ALL                7
  40 #define LBX_OPT_EXTENSION               255
  41
  42 /*
  43  * Length fields are encoded in 1 or 3 bytes
  44  */
  45 #define LBX_OPT_SMALLLEN_SIZE           1
  46 #define LBX_OPT_BIGLEN_SIZE             3
  47 #define LBX_OPT_BIGLEN_MIN              256
  48
  49 #define LBX_OPT_DECODE_LEN(p, len, size) \
  50     if ((p)[0]) { \
  51         (len) = (p)[0]; \
  52         (size) = LBX_OPT_SMALLLEN_SIZE; \
  53     } \
  54     else { \
  55         (len) = ((LBX_OPT_BIGLEN_MIN + (p)[1]) << 8) | (p)[2]; \
  56         (size) = LBX_OPT_BIGLEN_SIZE; \
  57     }
  58
  59 /*
  60  * Option header lengths
  61  */
  62 #define LBX_OPT_SMALLHDR_LEN            (1 + LBX_OPT_SMALLLEN_SIZE)
  63 #define LBX_OPT_BIGHDR_LEN              (1 + LBX_OPT_BIGLEN_SIZE)
  64
  65 /*
  66  * Delta compression parameters
  67  */
  68 #define LBX_OPT_DELTA_REQLEN            6
  69 #define LBX_OPT_DELTA_REPLYLEN          2
  70 #define LBX_OPT_DELTA_NCACHE_DFLT       16
  71 #define LBX_OPT_DELTA_MSGLEN_MIN        32
  72 #define LBX_OPT_DELTA_MSGLEN_DFLT       64
  73
  74
  75 /*
  76  * Stream compression opts
  77  */
  78
  79 #include <sys/types.h>
  80
  81 #if defined(WIN32) || (defined(USG) && !defined(CRAY) && !defined(umips) && !defined(MOTOROLA) && !defined(uniosu) && !defined(__sxg__))
  82
  83 struct iovec {
  84     caddr_t iov_base;
  85     int iov_len;
  86 };
  87
  88 #else
  89 #ifndef Lynx
  90 #include <sys/uio.h>
  91 #else
  92 #include <uio.h>
  93 #endif
  94 #endif
  95
  96 typedef void *LbxStreamCompHandle;
  97
  98 typedef struct _LbxStreamOpts {
  99     LbxStreamCompHandle (*streamCompInit)(int fd, pointer arg);
 100     pointer             streamCompArg;
 101     int                 (*streamCompStuffInput)(
 102                             int fd,
 103                             unsigned char *buf,
 104                             int buflen
 105                         );
 106     int                 (*streamCompInputAvail)(
 107                             int fd
 108                         );
 109     int                 (*streamCompFlush)(
 110                             int fd
 111                         );
 112     int                 (*streamCompRead)(
 113                             int fd,
 114                             unsigned char *buf,
 115                             int buflen
 116                         );
 117     int                 (*streamCompWriteV)(
 118                             int fd,
 119                             struct iovec *iov,
 120                             int iovcnt
 121                         );
 122     void                (*streamCompOn)(
 123                             int fd
 124                         );
 125     void                (*streamCompOff)(
 126                             int fd
 127                         );
 128     void                (*streamCompFreeHandle)(
 129                             LbxStreamCompHandle handle
 130                         );
 131 } LbxStreamOpts;
 132
 133 #endif /* _LBX_OPTS_H_ */