b9cd6ec91b
_pext_vrinputs: added cvar to enable vr inputs protocol extension allowing vr inputs to be networked to ssqc too. defaults to 0 for now, will be renamed when deemed final. updates menu: the prompt to enable sources is now more explicit instead of expecting the user to have a clue. updates menu: added a v3 sources format, which should be more maintainable. not final. updates menu: try to give reasons why sources might be failing (to help blame ISPs if they try fucking over TTH dns again). presets menu: no longer closes the instant a preset is chosen. some presets have a couple of modifiers listed. force the demo loop in the background to serve as a preview. prompts menus: now does word wrapping. ftemaster: support importing server lists from other master servers (requested by Eukara). server: try to detect when non-reply inbound packets are blocked by firewalls/nats/etc (using ftemaster to do so). qcvm: added pointcontentsmask builtin, allowing it to probe more than just world, with fte's full contentbit range instead of just q1 legacy. qcvm: memfill8 builtin now works on createbuffer() pointers. qcvm: add missing unsigned ops. Fixed double comparison ops. fixed bug with op_store_i64. added missing OP_LOADP_I64 qcc: added '#pragma framerate RATE' for overriding implicit nextthink durations. qcc: fixed '#pragma DONT_COMPILE_THIS_FILE' to not screw up comments. qcc: added __GITURL__ __GITHASH__ __GITDATE__ __GITDATETIME__ __GITDESC__ for any mods that might want to make use of that. qcc: fix up -Fhashonly a little setrenderer: support for vulkan gpu enumeration. rulesets: reworked to support custom rulesets (using hashes to catch haxxors, though still nothing prevents just changing the client to ignore rulesets) bspx: use our BIH code for the bspx BRUSHLIST lump instead of the older less efficient code. (static)iqm+obj: these model formats can now be used for the worldmodel (with a suitable .ent file). Also using BIH for much better collision performance. pmove: tried to optimise PM_NudgePosition, should boost fps in stress tests. wayland: fix a crash on startup. mousegrabs now works better. imagetool: uses sdl for previews. git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@5813 fc73d0e0-1445-4013-8a0c-d673dee63da5
115 lines
4.2 KiB
C
115 lines
4.2 KiB
C
/*
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* crc.c */
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#include "quakedef.h"
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#include <ctype.h>
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// this is a 16 bit, non-reflected CRC using the polynomial 0x1021
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// and the initial and final xor values shown below... in other words, the
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// CCITT standard CRC used by XMODEM
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#define QCRC_INIT_VALUE 0xffff
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#define QCRC_XOR_VALUE 0x0000
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static unsigned short crctable[256] =
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{
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0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
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0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
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0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
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0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
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0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
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0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
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0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
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0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
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0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
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0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
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0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
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0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
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0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
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0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
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0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
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0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
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0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
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0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
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0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
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0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
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0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
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0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
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0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
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0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
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0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
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0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
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0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
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0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
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0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
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0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
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0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
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0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0
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};
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static void CRC16_Init (void *context)
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{
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unsigned short *ctx = context;
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*ctx = QCRC_INIT_VALUE;
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}
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static void CRC16_Update (void *context, const void *data, size_t datasize)
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{
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unsigned short *ctx = context;
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unsigned short crc = *ctx;
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const char *start = data;
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while (datasize --> 0)
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crc = ((crc << 8) & 0xffff) ^ crctable[(crc >> 8) ^ *start++];
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*ctx = crc;
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}
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static void CRC16_Finish (unsigned char *digest, void *context)
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{
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unsigned short *ctx = context;
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unsigned short crc = *ctx ^ QCRC_XOR_VALUE;
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digest[0] = (crc>>0)&0xff; //digest should be the same regardless of endian. spit it out as little endian.
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digest[1] = (crc>>8)&0xff;
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}
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hashfunc_t hash_crc16 =
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{
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2,
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2,
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CRC16_Init,
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CRC16_Update,
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CRC16_Finish,
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};
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static void CRC16_Update_Lower (void *context, const void *data, size_t datasize)
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{
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unsigned short *ctx = context;
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unsigned short crc = *ctx;
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const char *start = data;
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while (datasize --> 0)
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crc = ((crc << 8) & 0xffff) ^ crctable[(crc >> 8) ^ tolower(*start++)];
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*ctx = crc;
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}
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hashfunc_t hash_crc16_lower = //a case insensitive version...
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{
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2,
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2,
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CRC16_Init,
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CRC16_Update_Lower,
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CRC16_Finish,
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};
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