diff options
Diffstat (limited to 'lbxopts.h')
| -rw-r--r-- | lbxopts.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/lbxopts.h b/lbxopts.h new file mode 100644 index 0000000..cacfa44 --- /dev/null +++ b/lbxopts.h @@ -0,0 +1,128 @@ +/* $Xorg: lbxopts.h,v 1.3 2000/08/18 04:05:45 coskrey Exp $ */ +/* + * Copyright 1994 Network Computing Devices, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software and + * its documentation for any purpose is hereby granted without fee, provided + * that the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name Network Computing Devices, Inc. not be + * used in advertising or publicity pertaining to distribution of this + * software without specific, written prior permission. + * + * THIS SOFTWARE IS PROVIDED `AS-IS'. NETWORK COMPUTING DEVICES, INC., + * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING WITHOUT + * LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE, OR NONINFRINGEMENT. IN NO EVENT SHALL NETWORK + * COMPUTING DEVICES, INC., BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING + * SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING LOSS OF USE, DATA, + * OR PROFITS, EVEN IF ADVISED OF THE POSSIBILITY THEREOF, AND REGARDLESS OF + * WHETHER IN AN ACTION IN CONTRACT, TORT OR NEGLIGENCE, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + */ + +#ifndef _LBX_OPTS_H_ +#define _LBX_OPTS_H_ + +/* + * Negotiable configuration options + */ +#define LBX_OPT_DELTA_PROXY 0 +#define LBX_OPT_DELTA_SERVER 1 +#define LBX_OPT_STREAM_COMP 2 +#define LBX_OPT_BITMAP_COMP 3 +#define LBX_OPT_PIXMAP_COMP 4 +#define LBX_OPT_MSG_COMP 5 /* aka "squishing" */ +#define LBX_OPT_USE_TAGS 6 +#define LBX_OPT_CMAP_ALL 7 +#define LBX_OPT_EXTENSION 255 + +/* + * Length fields are encoded in 1 or 3 bytes + */ +#define LBX_OPT_SMALLLEN_SIZE 1 +#define LBX_OPT_BIGLEN_SIZE 3 +#define LBX_OPT_BIGLEN_MIN 256 + +#define LBX_OPT_DECODE_LEN(p, len, size) \ + if ((p)[0]) { \ + (len) = (p)[0]; \ + (size) = LBX_OPT_SMALLLEN_SIZE; \ + } \ + else { \ + (len) = LBX_OPT_BIGLEN_MIN + (p)[1] << 8 | (p)[2]; \ + (size) = LBX_OPT_BIGLEN_SIZE; \ + } + +/* + * Option header lengths + */ +#define LBX_OPT_SMALLHDR_LEN (1 + LBX_OPT_SMALLLEN_SIZE) +#define LBX_OPT_BIGHDR_LEN (1 + LBX_OPT_BIGLEN_SIZE) + +/* + * Delta compression parameters + */ +#define LBX_OPT_DELTA_REQLEN 6 +#define LBX_OPT_DELTA_REPLYLEN 2 +#define LBX_OPT_DELTA_NCACHE_DFLT 16 +#define LBX_OPT_DELTA_MSGLEN_MIN 32 +#define LBX_OPT_DELTA_MSGLEN_DFLT 64 + + +/* + * Stream compression opts + */ + +#include <sys/types.h> + +#if defined(WIN32) || (defined(USG) && !defined(CRAY) && !defined(umips) && !defined(MOTOROLA) && !defined(uniosu) && !defined(__sxg__)) + +struct iovec { + caddr_t iov_base; + int iov_len; +}; + +#else +#include <sys/uio.h> +#endif + +typedef void *LbxStreamCompHandle; + +typedef struct _LbxStreamOpts { + LbxStreamCompHandle (*streamCompInit)(); + pointer streamCompArg; + int (*streamCompStuffInput)( + int fd, + unsigned char *buf, + int buflen + ); + int (*streamCompInputAvail)( + int fd + ); + int (*streamCompFlush)( + int fd + ); + int (*streamCompRead)( + int fd, + unsigned char *buf, + int buflen + ); + int (*streamCompWriteV)( + int fd, + struct iovec *iov, + int iovcnt + ); + void (*streamCompOn)( + int fd + ); + void (*streamCompOff)( + int fd + ); + void (*streamCompFreeHandle)( + LbxStreamCompHandle handle + ); +} LbxStreamOpts; + +#endif /* _LBX_OPTS_H_ */ |