diff options
Diffstat (limited to 'lbx/lbxopts.c')
| -rw-r--r-- | lbx/lbxopts.c | 806 |
1 files changed, 0 insertions, 806 deletions
diff --git a/lbx/lbxopts.c b/lbx/lbxopts.c deleted file mode 100644 index eac51bcea..000000000 --- a/lbx/lbxopts.c +++ /dev/null @@ -1,806 +0,0 @@ -/* $Xorg: lbxopts.c,v 1.3 2000/08/17 19:53:31 cpqbld 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. - * - */ -/* $XFree86: xc/programs/Xserver/lbx/lbxopts.c,v 1.5 2001/01/17 22:37:00 dawes Exp $ */ - -#ifdef HAVE_DIX_CONFIG_H -#include <dix-config.h> -#endif - -#ifdef OPTDEBUG -#include <stdio.h> -#endif -#include <X11/X.h> -#include <X11/Xproto.h> -#include "misc.h" -#include "colormapst.h" -#include "propertyst.h" -#include "lbxserve.h" -#include <X11/extensions/lbxstr.h> -#include <X11/extensions/lbximage.h> -#include <X11/extensions/lbxopts.h> -#include "lbxsrvopts.h" -#ifndef NO_ZLIB -#include <X11/extensions/lbxzlib.h> -#endif /* NO_ZLIB */ - -static int LbxProxyDeltaOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int LbxServerDeltaOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int LbxDeltaOpt ( unsigned char *popt, int optlen, - unsigned char *preply, short *pn, short *pmaxlen ); -static int LbxStreamCompOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int ZlibParse ( LbxNegOptsPtr pno, unsigned char *popt, int optlen, - unsigned char *preply ); -static int LbxMessageCompOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int LbxUseTagsOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int LbxBitmapCompOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int LbxPixmapCompOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); -static int MergeDepths ( int *depths, LbxPixmapCompMethod *method ); -static int LbxCmapAllOpt ( LbxNegOptsPtr pno, unsigned char *popt, - int optlen, unsigned char *preply ); - -/* - * List of LBX options we recognize and are willing to negotiate - */ -static struct _LbxOptionParser { - CARD8 optcode; - int (*parser)(LbxNegOptsPtr, unsigned char *, - int, unsigned char *); -} LbxOptions[] = { - { LBX_OPT_DELTA_PROXY, LbxProxyDeltaOpt }, - { LBX_OPT_DELTA_SERVER, LbxServerDeltaOpt }, - { LBX_OPT_STREAM_COMP, LbxStreamCompOpt }, - { LBX_OPT_BITMAP_COMP, LbxBitmapCompOpt }, - { LBX_OPT_PIXMAP_COMP, LbxPixmapCompOpt }, - { LBX_OPT_MSG_COMP, LbxMessageCompOpt }, - { LBX_OPT_USE_TAGS, LbxUseTagsOpt }, - { LBX_OPT_CMAP_ALL, LbxCmapAllOpt } -}; - -#define LBX_N_OPTS (sizeof(LbxOptions) / sizeof(struct _LbxOptionParser)) - -/* - * Set option defaults - */ -void -LbxOptionInit(LbxNegOptsPtr pno) -{ - bzero(pno, sizeof(LbxNegOptsRec)); - pno->proxyDeltaN = pno->serverDeltaN = LBX_OPT_DELTA_NCACHE_DFLT; - pno->proxyDeltaMaxLen = pno->serverDeltaMaxLen = LBX_OPT_DELTA_MSGLEN_DFLT; - pno->squish = TRUE; - pno->numBitmapCompMethods = 0; - pno->bitmapCompMethods = NULL; - pno->numPixmapCompMethods = 0; - pno->pixmapCompMethods = NULL; - pno->pixmapCompDepths = NULL; - pno->useTags = TRUE; -} - -int -LbxOptionParse(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - int i; - int nopts = *popt++; - unsigned char *pout = preply; - - for (i = 0; i < nopts; i++) { - int j; - int len; - int hdrlen; - int replylen; - - LBX_OPT_DECODE_LEN(popt + 1, len, hdrlen); - if (len < ++hdrlen || len > optlen) { -#ifdef OPTDEBUG - fprintf(stderr, "bad option length, len = %d, hdrlen = %d, optlen = %d\n", len, hdrlen, optlen); -#endif - return -1; - } - - for (j = 0; j < LBX_N_OPTS; j++) { - if (popt[0] == LbxOptions[j].optcode) { - replylen = (*LbxOptions[j].parser)(pno, - popt + hdrlen, - len - hdrlen, - pout + LBX_OPT_SMALLHDR_LEN); - if (replylen < 0) - return -1; - else if (replylen > 0) { - /* - * None of the current options require big headers, - * so this works for now. - */ - *pout++ = i; - *pout++ = LBX_OPT_SMALLHDR_LEN + replylen; - pout += replylen; - pno->nopts++; - } - break; - } - } - - optlen -= len; - popt += len; - } - - return (pout - preply); -} - -static int -LbxProxyDeltaOpt(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - return LbxDeltaOpt(popt, optlen, preply, - &pno->proxyDeltaN, &pno->proxyDeltaMaxLen); -} - -static int -LbxServerDeltaOpt(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - return LbxDeltaOpt(popt, optlen, preply, - &pno->serverDeltaN, &pno->serverDeltaMaxLen); -} - -static int -LbxDeltaOpt(unsigned char *popt, - int optlen, - unsigned char *preply, - short *pn, - short *pmaxlen) -{ - short n; - short maxlen; - - /* - * If there's more data than we expect, we just ignore it. - */ - if (optlen < LBX_OPT_DELTA_REQLEN) { -#ifdef OPTDEBUG - fprintf(stderr, "bad delta option length = %d\n", optlen); -#endif - return -1; - } - - /* - * Accept whatever value the proxy prefers, so skip the - * min/max offerings. Note that the max message len value is - * encoded as the number of 4-byte values. - */ - popt += 2; - n = *popt++; - popt += 2; - maxlen = *popt++; - if ((maxlen <<= 2) == 0) - n = 0; - else if (maxlen < 32) { -#ifdef OPTDEBUG - fprintf(stderr, "bad delta max msg length %d\n", maxlen); -#endif - return -1; - } - - /* - * Put the response in the reply buffer - */ - *preply++ = n; - *preply++ = maxlen >> 2; - - *pn = n; - *pmaxlen = maxlen; - - return LBX_OPT_DELTA_REPLYLEN; -} - - -static struct _LbxStreamCompParser { - int typelen; - char *type; - int (*parser)(LbxNegOptsPtr, unsigned char *, - int, unsigned char *); -} LbxStreamComp[] = { -#ifndef NO_ZLIB - { ZLIB_STRCOMP_OPT_LEN, ZLIB_STRCOMP_OPT, ZlibParse }, -#endif /* NO_ZLIB */ -}; - -#define LBX_N_STRCOMP \ - (sizeof(LbxStreamComp) / sizeof(struct _LbxStreamCompParser)) - -static int -LbxStreamCompOpt(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - int i; - int typelen; - int nopts = *popt++; - - for (i = 0; i < nopts; i++) { - int j; - int len; - int lensize; - int replylen; - - typelen = popt[0]; - for (j = 0; j < LBX_N_STRCOMP; j++) { - if (typelen == LbxStreamComp[j].typelen && - !strncmp((char *) popt + 1, LbxStreamComp[j].type, typelen)) - break; - } - - popt += 1 + typelen; - optlen -= 1 + typelen; - LBX_OPT_DECODE_LEN(popt, len, lensize); - - if (j < LBX_N_STRCOMP) { - if (len > optlen) - return -1; - replylen = (*LbxStreamComp[j].parser)(pno, - popt + lensize, - len - lensize, - preply + 1); - if (replylen == -1) - return -1; - else if (replylen >= 0) { - *preply = i; - return replylen + 1; - } - } - - optlen -= len; - popt += len; - } - - return 0; -} - - -static int -ZlibParse(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - int level; /* compression level */ - - if (*popt++ != 1) /* length should be 1 */ - return (-1); - - level = *popt; - if (level < 1 || level > 9) - return (-1); - - pno->streamOpts.streamCompInit = - (LbxStreamCompHandle (*)(int, pointer))ZlibInit; - pno->streamOpts.streamCompArg = (pointer)(long)level; - pno->streamOpts.streamCompStuffInput = ZlibStuffInput; - pno->streamOpts.streamCompInputAvail = ZlibInputAvail; - pno->streamOpts.streamCompFlush = ZlibFlush; - pno->streamOpts.streamCompRead = ZlibRead; - pno->streamOpts.streamCompWriteV = ZlibWriteV; - pno->streamOpts.streamCompOn = ZlibCompressOn; - pno->streamOpts.streamCompOff = ZlibCompressOff; - pno->streamOpts.streamCompFreeHandle = - (void (*)(LbxStreamCompHandle))ZlibFree; - - return (0); -} - -static int -LbxMessageCompOpt(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - - if (optlen == 0) { -#ifdef OPTDEBUG - fprintf(stderr, "bad message-comp option length specified %d\n", optlen); -#endif - return -1; - } - - pno->squish = *preply = *popt; - return 1; -} - - -static int -LbxUseTagsOpt(LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) -{ - - if (optlen == 0) { -#ifdef OPTDEBUG - fprintf(stderr, "bad use-tags option length specified %d\n", optlen); -#endif - return -1; - } - - pno->useTags = *preply = *popt; - return 1; -} - - -/* - * Option negotiation for image compression - */ - -LbxBitmapCompMethod -LbxBitmapCompMethods [] = { - { - "XC-FaxG42D", /* compression method name */ - 0, /* inited */ - 2, /* method opcode */ - NULL, /* init function */ - LbxImageEncodeFaxG42D, /* encode function */ - LbxImageDecodeFaxG42D /* decode function */ - } -}; - -#define NUM_BITMAP_METHODS \ - (sizeof (LbxBitmapCompMethods) / sizeof (LbxBitmapCompMethod)) - - -#if 1 -/* - * Currently, we don't support any pixmap compression algorithms - * because regular stream compression does much better than PackBits. - * If we want to plug in a better pixmap image compression algorithm, - * it would go here. - */ - -#define NUM_PIXMAP_METHODS 0 -LbxPixmapCompMethod LbxPixmapCompMethods [1]; /* dummy */ - -#else - -LbxPixmapCompMethod -LbxPixmapCompMethods [] = { - { - "XC-PackBits", /* compression method name */ - 1 << ZPixmap, /* formats supported */ - 1, {8}, /* depths supported */ - 0, /* inited */ - 1, /* method opcode */ - NULL, /* init function */ - LbxImageEncodePackBits, /* encode function */ - LbxImageDecodePackBits /* decode function */ - } -}; - -#define NUM_PIXMAP_METHODS \ - (sizeof (LbxPixmapCompMethods) / sizeof (LbxPixmapCompMethod)) -#endif - - -static int -LbxImageCompOpt (Bool pixmap, - LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) - -{ - unsigned char *preplyStart = preply; - int numMethods = *popt++; - unsigned char *myIndices, *hisIndices; - unsigned int *retFormats = NULL; - int **retDepths = NULL; - int replyCount = 0; - int status, i, j; - - if (numMethods == 0) - { - if (pixmap) - pno->numPixmapCompMethods = 0; - else - pno->numBitmapCompMethods = 0; - - *preply++ = 0; - return (1); - } - - myIndices = (unsigned char *) xalloc (numMethods); - hisIndices = (unsigned char *) xalloc (numMethods); - - if (!myIndices || !hisIndices) - { - if (myIndices) - xfree (myIndices); - if (hisIndices) - xfree (hisIndices); - return -1; - } - - if (pixmap) - { - retFormats = (unsigned *) xalloc (numMethods); - retDepths = (int **) xalloc (numMethods * sizeof (int *)); - - if (!retFormats || !retDepths) - { - if (retFormats) - xfree (retFormats); - if (retDepths) - xfree (retDepths); - xfree (myIndices); - xfree (hisIndices); - return -1; - } - } - - /* - * For each method in the list sent by the proxy, see if the server - * supports this method. If YES, update the following lists: - * - * myIndices[] is a list of indices into the server's - * LbxBit[Pix]mapCompMethods table. - * - * hisIndices[] is a list of indices into the list of - * method names sent by the proxy. - * - * retFormats[] indicates for each pixmap compression method, - * the pixmap formats supported. - * - * retDepths[] indicates for each pixmap compression method, - * the pixmap depths supported. - */ - - for (i = 0; i < numMethods; i++) - { - unsigned int formatMask = 0, newFormatMask = 0; - int depthCount, *depths = NULL, len; - int freeDepths; - char *methodName; - - freeDepths = 0; - len = *popt++; - methodName = (char *) popt; - popt += len; - - if (pixmap) - { - formatMask = *popt++; - depthCount = *popt++; - depths = (int *) xalloc ((depthCount + 1) * sizeof (int)); - freeDepths = 1; - depths[0] = depthCount; - for (j = 1; j <= depthCount; j++) - depths[j] = *popt++; - } - - for (j = 0; - j < (pixmap ? NUM_PIXMAP_METHODS : NUM_BITMAP_METHODS); j++) - { - - status = strncmp (methodName, - (pixmap ? LbxPixmapCompMethods[j].methodName : - LbxBitmapCompMethods[j].methodName), - len); - - if (status == 0 && pixmap) - { - newFormatMask = - formatMask & LbxPixmapCompMethods[j].formatMask; - - depthCount = MergeDepths (depths, &LbxPixmapCompMethods[j]); - - if (newFormatMask == 0 || depthCount == 0) - status = 1; - } - - if (status == 0) - { - myIndices[replyCount] = j; - hisIndices[replyCount] = i; - - if (pixmap) - { - retFormats[replyCount] = newFormatMask; - retDepths[replyCount] = depths; - freeDepths = 0; - } - - replyCount++; - break; - } - } - - if (freeDepths) - xfree (depths); - } - - *preply++ = replyCount; - - /* - * Sort the lists by LBX server preference (increasing myIndices[] vals) - */ - - for (i = 0; i <= replyCount - 2; i++) - for (j = replyCount - 1; j >= i; j--) - if (myIndices[j - 1] > myIndices[j]) - { - char temp1 = myIndices[j - 1]; - char temp2 = hisIndices[j - 1]; - - myIndices[j - 1] = myIndices[j]; - myIndices[j] = temp1; - - hisIndices[j - 1] = hisIndices[j]; - hisIndices[j] = temp2; - - if (pixmap) - { - unsigned temp3 = retFormats[j - 1]; - int *temp4 = retDepths[j - 1]; - - retFormats[j - 1] = retFormats[j]; - retFormats[j] = temp3; - - retDepths[j - 1] = retDepths[j]; - retDepths[j] = temp4; - } - } - - /* - * For each method supported, return to the proxy an index into - * the list sent by the proxy, the opcode to be used for the method, - * the pixmap formats supported, and the list of depths supported. - */ - - for (i = 0; i < replyCount; i++) - { - *preply++ = hisIndices[i]; - - if (pixmap) - { - int left; - *preply++ = LbxPixmapCompMethods[myIndices[i]].methodOpCode; - *preply++ = retFormats[i]; - *preply++ = left = retDepths[i][0]; - j = 1; - while (left > 0) - { - *preply++ = retDepths[i][j]; - left--; - } - } - else - { - *preply++ = LbxBitmapCompMethods[myIndices[i]].methodOpCode; - } - } - - if (pixmap) - { - pno->numPixmapCompMethods = replyCount; - pno->pixmapCompMethods = myIndices; - pno->pixmapCompDepths = retDepths; - } - else - { - pno->numBitmapCompMethods = replyCount; - pno->bitmapCompMethods = myIndices; - } - - if (hisIndices) - xfree (hisIndices); - - if (pixmap) - { - if (retFormats) - xfree (retFormats); - } - - return (preply - preplyStart); -} - - - -static int -LbxBitmapCompOpt (LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) - -{ - return (LbxImageCompOpt (0 /* bitmap */, pno, popt, optlen, preply)); -} - - -static int -LbxPixmapCompOpt (LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) - -{ - return (LbxImageCompOpt (1 /* Pixmap */, pno, popt, optlen, preply)); -} - - -LbxBitmapCompMethod * -LbxSrvrLookupBitmapCompMethod (LbxProxyPtr proxy, - int methodOpCode) - -{ - int i; - - for (i = 0; i < proxy->numBitmapCompMethods; i++) - { - LbxBitmapCompMethod *method; - - method = &LbxBitmapCompMethods[proxy->bitmapCompMethods[i]]; - - if (method->methodOpCode == methodOpCode) - return (method); - } - - return (NULL); -} - - -LbxPixmapCompMethod * -LbxSrvrLookupPixmapCompMethod (LbxProxyPtr proxy, - int methodOpCode) - -{ - int i; - - for (i = 0; i < proxy->numPixmapCompMethods; i++) - { - LbxPixmapCompMethod *method; - - method = &LbxPixmapCompMethods[proxy->pixmapCompMethods[i]]; - - if (method->methodOpCode == methodOpCode) - return (method); - } - - return (NULL); -} - - -LbxBitmapCompMethod * -LbxSrvrFindPreferredBitmapCompMethod (LbxProxyPtr proxy) - -{ - if (proxy->numBitmapCompMethods == 0) - return NULL; - else - return (&LbxBitmapCompMethods[proxy->bitmapCompMethods[0]]); -} - - - -LbxPixmapCompMethod * -LbxSrvrFindPreferredPixmapCompMethod (LbxProxyPtr proxy, - int format, - int depth) - -{ - if (proxy->numPixmapCompMethods == 0) - return NULL; - else - { - LbxPixmapCompMethod *method; - int i, j; - - for (i = 0; i < proxy->numPixmapCompMethods; i++) - { - method = &LbxPixmapCompMethods[proxy->pixmapCompMethods[i]]; - - if ((method->formatMask & (1 << format))) - { - int n = proxy->pixmapCompDepths[i][0]; - j = 1; - while (n > 0) - { - if (depth == proxy->pixmapCompDepths[i][j]) - return method; - else - n--; - } - } - } - - return NULL; - } -} - - -static int -MergeDepths (int *depths, - LbxPixmapCompMethod *method) - -{ - int i, j, count; - int temp[LBX_MAX_DEPTHS + 1]; - - temp[0] = count = 0; - - for (i = 1; i <= depths[0]; i++) - { - for (j = 0; j < method->depthCount; j++) - if (method->depths[j] == depths[i]) - { - temp[0]++; - temp[++count] = depths[i]; - break; - } - } - - memcpy (depths, temp, (count + 1) * sizeof (int)); - - return (count); -} - - -#define LbxCmapAllMethod "XC-CMAP" - -static int -LbxCmapAllOpt (LbxNegOptsPtr pno, - unsigned char *popt, - int optlen, - unsigned char *preply) - -{ - int numMethods = *popt++; - int i; - - for (i = 0; i < numMethods; i++) - { - int len; - char *methodName; - - len = *popt++; - methodName = (char *) popt; - popt += len; - if (!strncmp(methodName, LbxCmapAllMethod, len)) - break; - } - if (i >= numMethods) - i = 0; /* assume first one is proxy's favorite */ - *preply = i; - return 1; -} |