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_ */ 134
