From 425decdf7e9284d15aa726e3ae96b9942fb0e3ea Mon Sep 17 00:00:00 2001 From: IronClawTrem Date: Sun, 16 Feb 2020 03:40:06 +0000 Subject: create tremded branch --- src/client/cl_parse.cpp | 961 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 961 insertions(+) create mode 100644 src/client/cl_parse.cpp (limited to 'src/client/cl_parse.cpp') diff --git a/src/client/cl_parse.cpp b/src/client/cl_parse.cpp new file mode 100644 index 0000000..111211a --- /dev/null +++ b/src/client/cl_parse.cpp @@ -0,0 +1,961 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2013 Darklegion Development +Copyright (C) 2015-2019 GrangerHub + +This file is part of Tremulous. + +Tremulous is free software; you can redistribute it +and/or modify it under the terms of the GNU General Public License as +published by the Free Software Foundation; either version 3 of the License, +or (at your option) any later version. + +Tremulous is distributed in the hope that it will be +useful, but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with Tremulous; if not, see + +=========================================================================== +*/ +// cl_parse.c -- parse a message received from the server + +#include "client.h" + +const char *svc_strings[256] = { + "svc_bad", + "svc_nop", + "svc_gamestate", + "svc_configstring", + "svc_baseline", + "svc_serverCommand", + "svc_download", + "svc_snapshot", + "svc_EOF", + "svc_voipSpeex", + "svc_voipOpus", +}; + +void SHOWNET( msg_t *msg, const char *s) { + if ( cl_shownet->integer >= 2) { + Com_Printf ("%3i:%s\n", msg->readcount-1, s); + } +} + + +/* +========================================================================= + +MESSAGE PARSING + +========================================================================= +*/ + +/* +================== +CL_DeltaEntity + +Parses deltas from the given base and adds the resulting entity +to the current frame +================== +*/ +static void CL_DeltaEntity(msg_t *msg, clSnapshot_t *frame, int newnum, entityState_t *old, bool unchanged) +{ + entityState_t *state; + + // save the parsed entity state into the big circular buffer so it can be + // used as the source for a later delta + state = &cl.parseEntities[cl.parseEntitiesNum & (MAX_PARSE_ENTITIES-1)]; + + if ( unchanged ) + { + *state = *old; + } + else + { + MSG_ReadDeltaEntity( clc.netchan.alternateProtocol, msg, old, state, newnum ); + } + + if ( state->number == (MAX_GENTITIES-1) ) + { + return; // entity was delta removed + } + + cl.parseEntitiesNum++; + frame->numEntities++; +} + +/* +================== +CL_ParsePacketEntities + +================== +*/ +static void CL_ParsePacketEntities( msg_t *msg, clSnapshot_t *oldframe, clSnapshot_t *newframe) +{ + int newnum; + entityState_t *oldstate; + int oldindex, oldnum; + + newframe->parseEntitiesNum = cl.parseEntitiesNum; + newframe->numEntities = 0; + + // delta from the entities present in oldframe + oldindex = 0; + oldstate = NULL; + if (!oldframe) { + oldnum = 99999; + } else { + if ( oldindex >= oldframe->numEntities ) { + oldnum = 99999; + } else { + oldstate = &cl.parseEntities[ + (oldframe->parseEntitiesNum + oldindex) & (MAX_PARSE_ENTITIES-1)]; + oldnum = oldstate->number; + } + } + + while ( 1 ) { + // read the entity index number + newnum = MSG_ReadBits( msg, GENTITYNUM_BITS ); + + if ( newnum == (MAX_GENTITIES-1) ) { + break; + } + + if ( msg->readcount > msg->cursize ) { + Com_Error (ERR_DROP,"CL_ParsePacketEntities: end of message"); + } + + while ( oldnum < newnum ) { + // one or more entities from the old packet are unchanged + if ( cl_shownet->integer == 3 ) { + Com_Printf ("%3i: unchanged: %i\n", msg->readcount, oldnum); + } + CL_DeltaEntity( msg, newframe, oldnum, oldstate, true ); + + oldindex++; + + if ( oldindex >= oldframe->numEntities ) { + oldnum = 99999; + } else { + oldstate = &cl.parseEntities[ + (oldframe->parseEntitiesNum + oldindex) & (MAX_PARSE_ENTITIES-1)]; + oldnum = oldstate->number; + } + } + if (oldnum == newnum) { + // delta from previous state + if ( cl_shownet->integer == 3 ) { + Com_Printf ("%3i: delta: %i\n", msg->readcount, newnum); + } + CL_DeltaEntity( msg, newframe, newnum, oldstate, false ); + + oldindex++; + + if ( oldindex >= oldframe->numEntities ) { + oldnum = 99999; + } else { + oldstate = &cl.parseEntities[ + (oldframe->parseEntitiesNum + oldindex) & (MAX_PARSE_ENTITIES-1)]; + oldnum = oldstate->number; + } + continue; + } + + if ( oldnum > newnum ) { + // delta from baseline + if ( cl_shownet->integer == 3 ) { + Com_Printf ("%3i: baseline: %i\n", msg->readcount, newnum); + } + CL_DeltaEntity( msg, newframe, newnum, &cl.entityBaselines[newnum], false ); + continue; + } + + } + + // any remaining entities in the old frame are copied over + while ( oldnum != 99999 ) { + // one or more entities from the old packet are unchanged + if ( cl_shownet->integer == 3 ) { + Com_Printf ("%3i: unchanged: %i\n", msg->readcount, oldnum); + } + CL_DeltaEntity( msg, newframe, oldnum, oldstate, true ); + + oldindex++; + + if ( oldindex >= oldframe->numEntities ) { + oldnum = 99999; + } else { + oldstate = &cl.parseEntities[ + (oldframe->parseEntitiesNum + oldindex) & (MAX_PARSE_ENTITIES-1)]; + oldnum = oldstate->number; + } + } +} + + +/* +================ +CL_ParseSnapshot + +If the snapshot is parsed properly, it will be copied to +cl.snap and saved in cl.snapshots[]. If the snapshot is invalid +for any reason, no changes to the state will be made at all. +================ +*/ +void CL_ParseSnapshot( msg_t *msg ) { + int len; + clSnapshot_t *old; + clSnapshot_t newSnap; + int deltaNum; + int oldMessageNum; + int i, packetNum; + + // get the reliable sequence acknowledge number + // NOTE: now sent with all server to client messages + //clc.reliableAcknowledge = MSG_ReadLong( msg ); + + // read in the new snapshot to a temporary buffer + // we will only copy to cl.snap if it is valid + ::memset(&newSnap, 0, sizeof(newSnap)); + + // we will have read any new server commands in this + // message before we got to svc_snapshot + newSnap.serverCommandNum = clc.serverCommandSequence; + + newSnap.serverTime = MSG_ReadLong( msg ); + + // if we were just unpaused, we can only *now* really let the + // change come into effect or the client hangs. + cl_paused->modified = false; + + newSnap.messageNum = clc.serverMessageSequence; + + deltaNum = MSG_ReadByte( msg ); + if ( !deltaNum ) { + newSnap.deltaNum = -1; + } else { + newSnap.deltaNum = newSnap.messageNum - deltaNum; + } + newSnap.snapFlags = MSG_ReadByte( msg ); + + // If the frame is delta compressed from data that we + // no longer have available, we must suck up the rest of + // the frame, but not use it, then ask for a non-compressed + // message + if ( newSnap.deltaNum <= 0 ) { + newSnap.valid = true; // uncompressed frame + old = NULL; + clc.demowaiting = false; // we can start recording now + } else { + old = &cl.snapshots[newSnap.deltaNum & PACKET_MASK]; + if ( !old->valid ) { + // should never happen + Com_DPrintf ("Delta from invalid frame (not supposed to happen!).\n"); + } else if ( old->messageNum != newSnap.deltaNum ) { + // The frame that the server did the delta from + // is too old, so we can't reconstruct it properly. + Com_DPrintf ("Delta frame too old.\n"); + } else if ( cl.parseEntitiesNum - old->parseEntitiesNum > MAX_PARSE_ENTITIES - MAX_SNAPSHOT_ENTITIES ) { + Com_DPrintf ("Delta parseEntitiesNum too old.\n"); + } else { + newSnap.valid = true; // valid delta parse + } + } + + // read areamask + len = MSG_ReadByte( msg ); + + if(len > sizeof(newSnap.areamask)) + { + Com_Error (ERR_DROP,"CL_ParseSnapshot: Invalid size %d for areamask", len); + return; + } + + MSG_ReadData( msg, &newSnap.areamask, len); + + // read playerinfo + SHOWNET( msg, "playerstate" ); + if ( clc.netchan.alternateProtocol == 2 ) { + if ( old ) { + MSG_ReadDeltaAlternatePlayerstate( msg, &old->alternatePs, &newSnap.alternatePs ); + } else { + MSG_ReadDeltaAlternatePlayerstate( msg, NULL, &newSnap.alternatePs ); + } + } else { + if ( old ) { + MSG_ReadDeltaPlayerstate( msg, &old->ps, &newSnap.ps ); + } else { + MSG_ReadDeltaPlayerstate( msg, NULL, &newSnap.ps ); + } + } + + // read packet entities + SHOWNET( msg, "packet entities" ); + CL_ParsePacketEntities( msg, old, &newSnap ); + + // if not valid, dump the entire thing now that it has + // been properly read + if ( !newSnap.valid ) { + return; + } + + // clear the valid flags of any snapshots between the last + // received and this one, so if there was a dropped packet + // it won't look like something valid to delta from next + // time we wrap around in the buffer + oldMessageNum = cl.snap.messageNum + 1; + + if ( newSnap.messageNum - oldMessageNum >= PACKET_BACKUP ) { + oldMessageNum = newSnap.messageNum - ( PACKET_BACKUP - 1 ); + } + for ( ; oldMessageNum < newSnap.messageNum ; oldMessageNum++ ) { + cl.snapshots[oldMessageNum & PACKET_MASK].valid = false; + } + + // copy to the current good spot + cl.snap = newSnap; + cl.snap.ping = 999; + // calculate ping time + for ( i = 0 ; i < PACKET_BACKUP ; i++ ) { + packetNum = ( clc.netchan.outgoingSequence - 1 - i ) & PACKET_MASK; + if ( ( clc.netchan.alternateProtocol == 2 ? cl.snap.alternatePs.commandTime : cl.snap.ps.commandTime ) >= cl.outPackets[ packetNum ].p_serverTime ) { + cl.snap.ping = cls.realtime - cl.outPackets[ packetNum ].p_realtime; + break; + } + } + // save the frame off in the backup array for later delta comparisons + cl.snapshots[cl.snap.messageNum & PACKET_MASK] = cl.snap; + + if (cl_shownet->integer == 3) { + Com_Printf( " snapshot:%i delta:%i ping:%i\n", cl.snap.messageNum, + cl.snap.deltaNum, cl.snap.ping ); + } + + cl.newSnapshots = true; +} + + +//===================================================================== + +bool cl_connectedToPureServer; +bool cl_connectedToCheatServer; + +/* +================== +CL_SystemInfoChanged + +The systeminfo configstring has been changed, so parse +new information out of it. This will happen at every +gamestate, and possibly during gameplay. +================== +*/ +void CL_SystemInfoChanged( void ) { + char *systemInfo; + const char *s, *t; + char key[BIG_INFO_KEY]; + char value[BIG_INFO_VALUE]; + bool gameSet; + + systemInfo = cl.gameState.stringData + cl.gameState.stringOffsets[ CS_SYSTEMINFO ]; + // NOTE TTimo: + // when the serverId changes, any further messages we send to the server will use this new serverId + // https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=475 + // in some cases, outdated cp commands might get sent with this news serverId + cl.serverId = atoi( Info_ValueForKey( systemInfo, "sv_serverid" ) ); + +#ifdef USE_VOIP + s = Info_ValueForKey( systemInfo, "sv_voipProtocol" ); + clc.voipEnabled = !Q_stricmp(s, "opus"); +#endif + + // only set the paks, fs_game, and sv_pure when playing a demo + if ( !clc.demoplaying ) { + s = Info_ValueForKey( systemInfo, "sv_cheats" ); + cl_connectedToCheatServer = (bool)atoi( s ); + if ( !cl_connectedToCheatServer ) { + Cvar_SetCheatState(); + } + } + + // check pure server string + s = Info_ValueForKey( systemInfo, "sv_paks" ); + t = Info_ValueForKey( systemInfo, "sv_pakNames" ); + FS_PureServerSetLoadedPaks( s, t ); + + s = Info_ValueForKey( systemInfo, "sv_referencedPaks" ); + t = Info_ValueForKey( systemInfo, "sv_referencedPakNames" ); + FS_PureServerSetReferencedPaks( s, t ); + + gameSet = false; + // scan through all the variables in the systeminfo and locally set cvars to match + s = systemInfo; + while ( s ) { + int cvar_flags; + + Info_NextPair( &s, key, value ); + if ( !key[0] ) { + break; + } + + // ehw! + if (!Q_stricmp(key, "fs_game")) + { + if(FS_CheckDirTraversal(value)) + { + Com_Printf(S_COLOR_YELLOW "WARNING: Server sent invalid fs_game value %s\n", value); + continue; + } + + gameSet = true; + } else if ( clc.demoplaying && Q_stricmp(key, "sv_pure" ) ) { + continue; + } + + if((cvar_flags = Cvar_Flags(key)) == CVAR_NONEXISTENT) + Cvar_Get(key, value, CVAR_SERVER_CREATED | CVAR_ROM); + else + { + // If this cvar may not be modified by a server discard the value. + if(!(cvar_flags & (CVAR_SYSTEMINFO | CVAR_SERVER_CREATED | CVAR_USER_CREATED))) + { + if(Q_stricmp(key, "g_synchronousClients") && Q_stricmp(key, "pmove_fixed") && + Q_stricmp(key, "pmove_msec")) + { + Com_Printf(S_COLOR_YELLOW "WARNING: server is not allowed to set %s=%s\n", key, value); + continue; + } + } + + Cvar_SetSafe(key, value); + } + } + // if game folder should not be set and it is set at the client side + if ( !gameSet && *Cvar_VariableString("fs_game") ) { + Cvar_Set( "fs_game", "" ); + } + cl_connectedToPureServer = (bool)Cvar_VariableValue( "sv_pure" ); +} + +/* +================== +CL_ParseServerInfo +================== +*/ +static void CL_ParseServerInfo(void) +{ + const char *serverInfo; + + serverInfo = cl.gameState.stringData + + cl.gameState.stringOffsets[ CS_SERVERINFO ]; + + clc.sv_allowDownload = atoi(Info_ValueForKey(serverInfo, + "sv_allowDownload")); + Q_strncpyz(clc.sv_dlURL, + Info_ValueForKey(serverInfo, "sv_dlURL"), + sizeof(clc.sv_dlURL)); +} + +/* +================== +CL_ParseGamestate +================== +*/ +void CL_ParseGamestate( msg_t *msg ) { + int i; + entityState_t *es; + int newnum; + entityState_t nullstate; + int cmd; + char *s; + char oldGame[MAX_QPATH]; + + clc.connectPacketCount = 0; + + // wipe local client state + CL_ClearState(); + + // a gamestate always marks a server command sequence + clc.serverCommandSequence = MSG_ReadLong( msg ); + + // parse all the configstrings and baselines + cl.gameState.dataCount = 1; // leave a 0 at the beginning for uninitialized configstrings + while ( 1 ) { + cmd = MSG_ReadByte( msg ); + + if ( cmd == svc_EOF ) { + break; + } + + if ( cmd == svc_configstring ) { + int len; + + i = MSG_ReadShort( msg ); + if ( i < 0 || i >= MAX_CONFIGSTRINGS ) { + Com_Error( ERR_DROP, "configstring > MAX_CONFIGSTRINGS" ); + } + s = MSG_ReadBigString( msg ); + len = strlen( s ); + + if ( len + 1 + cl.gameState.dataCount > MAX_GAMESTATE_CHARS ) { + Com_Error( ERR_DROP, "MAX_GAMESTATE_CHARS exceeded" ); + } + + // append it to the gameState string buffer + cl.gameState.stringOffsets[ i ] = cl.gameState.dataCount; + ::memcpy( cl.gameState.stringData + cl.gameState.dataCount, s, len + 1 ); + cl.gameState.dataCount += len + 1; + } else if ( cmd == svc_baseline ) { + newnum = MSG_ReadBits( msg, GENTITYNUM_BITS ); + if ( newnum < 0 || newnum >= MAX_GENTITIES ) { + Com_Error( ERR_DROP, "Baseline number out of range: %i", newnum ); + } + ::memset(&nullstate, 0, sizeof(nullstate)); + es = &cl.entityBaselines[ newnum ]; + MSG_ReadDeltaEntity( clc.netchan.alternateProtocol, msg, &nullstate, es, newnum ); + } else { + Com_Error( ERR_DROP, "CL_ParseGamestate: bad command byte" ); + } + } + + clc.clientNum = MSG_ReadLong(msg); + // read the checksum feed + clc.checksumFeed = MSG_ReadLong( msg ); + + // save old gamedir + Cvar_VariableStringBuffer("fs_game", oldGame, sizeof(oldGame)); + + // parse useful values out of CS_SERVERINFO + CL_ParseServerInfo(); + + // parse serverId and other cvars + CL_SystemInfoChanged(); + + // stop recording now so the demo won't have an unnecessary level load at the end. + if(cl_autoRecordDemo->integer && clc.demorecording) + CL_StopRecord_f(); + + // reinitialize the filesystem if the game directory has changed + if(!cl_oldGameSet && (Cvar_Flags("fs_game") & CVAR_MODIFIED)) + { + cl_oldGameSet = true; + Q_strncpyz(cl_oldGame, oldGame, sizeof(cl_oldGame)); + } + + FS_ConditionalRestart(clc.checksumFeed, false); + + // This used to call CL_StartHunkUsers, but now we enter the download state before loading the + // cgame + CL_InitDownloads(); + + // make sure the game starts + Cvar_Set( "cl_paused", "0" ); +} + + +//===================================================================== + +/* +===================== +CL_ParseDownload + +A download message has been received from the server +===================== +*/ +void CL_ParseDownload ( msg_t *msg ) { + int size; + unsigned char data[MAX_MSGLEN]; + uint16_t block; + + if (!*clc.downloadTempName) { + Com_Printf("Server sending download, but no download was requested\n"); + CL_AddReliableCommand("stopdl", false); + return; + } + + // read the data + block = MSG_ReadShort ( msg ); + + if(!block && !clc.downloadBlock) + { + // block zero is special, contains file size + clc.downloadSize = MSG_ReadLong ( msg ); + + Cvar_SetValue( "cl_downloadSize", clc.downloadSize ); + + if (clc.downloadSize < 0) + { + Com_Error( ERR_DROP, "%s", MSG_ReadString( msg ) ); + return; + } + } + + size = MSG_ReadShort ( msg ); + if (size < 0 || size > sizeof(data)) + { + Com_Error(ERR_DROP, "CL_ParseDownload: Invalid size %d for download chunk", size); + return; + } + + MSG_ReadData(msg, data, size); + + if((clc.downloadBlock & 0xFFFF) != block) + { + Com_DPrintf( "CL_ParseDownload: Expected block %d, got %d\n", (clc.downloadBlock & 0xFFFF), block); + return; + } + + // open the file if not opened yet + if (!clc.download) + { + clc.download = FS_SV_FOpenFileWrite( clc.downloadTempName ); + + if (!clc.download) { + Com_Printf( "Could not create %s\n", clc.downloadTempName ); + CL_AddReliableCommand("stopdl", false); + CL_NextDownload(); + return; + } + } + + if (size) + FS_Write( data, size, clc.download ); + + CL_AddReliableCommand(va("nextdl %d", clc.downloadBlock), false); + clc.downloadBlock++; + + clc.downloadCount += size; + + // So UI gets access to it + Cvar_SetValue( "cl_downloadCount", clc.downloadCount ); + + if (!size) { // A zero length block means EOF + if (clc.download) { + FS_FCloseFile( clc.download ); + clc.download = 0; + + // rename the file + FS_SV_Rename( clc.downloadTempName, clc.downloadName, false ); + } + + // send intentions now + // We need this because without it, we would hold the last nextdl and then start + // loading right away. If we take a while to load, the server is happily trying + // to send us that last block over and over. + // Write it twice to help make sure we acknowledge the download + CL_WritePacket(); + CL_WritePacket(); + + // get another file if needed + CL_NextDownload (); + } +} + +#ifdef USE_VOIP +static bool CL_ShouldIgnoreVoipSender(int sender) +{ + if (!cl_voip->integer) + return true; // VoIP is disabled. + else if ((sender == clc.clientNum) && (!clc.demoplaying)) + return true; // ignore own voice (unless playing back a demo). + else if (clc.voipMuteAll) + return true; // all channels are muted with extreme prejudice. + else if (clc.voipIgnore[sender]) + return true; // just ignoring this guy. + else if (clc.voipGain[sender] == 0.0f) + return true; // too quiet to play. + + return false; +} + +/* +===================== +CL_PlayVoip + +Play raw data +===================== +*/ + +static void CL_PlayVoip(int sender, int samplecnt, const byte *data, int flags) +{ + if(flags & VOIP_DIRECT) + { + S_RawSamples(sender + 1, samplecnt, 48000, 2, 1, data, clc.voipGain[sender], -1); + } + + if(flags & VOIP_SPATIAL) + { + S_RawSamples(sender + MAX_CLIENTS + 1, samplecnt, 48000, 2, 1, data, 1.0f, sender); + } +} + +/* +===================== +CL_ParseVoip + +A VoIP message has been received from the server +===================== +*/ +static void CL_ParseVoip( msg_t *msg, bool ignoreData ) +{ + static short decoded[VOIP_MAX_PACKET_SAMPLES*4]; // !!! FIXME: don't hard code + + const int sender = MSG_ReadShort(msg); + const int generation = MSG_ReadByte(msg); + const int sequence = MSG_ReadLong(msg); + const int frames = MSG_ReadByte(msg); + const int packetsize = MSG_ReadShort(msg); + int flags = VOIP_DIRECT; + if (clc.netchan.alternateProtocol == 0) + flags = MSG_ReadBits(msg, VOIP_FLAGCNT); + char encoded[4000]; + int numSamples; + int seqdiff; + int written = 0; + int i; + + Com_DPrintf("VoIP: %d-byte packet from client %d\n", packetsize, sender); + + if (sender < 0) + return; // short/invalid packet, bail. + else if (generation < 0) + return; // short/invalid packet, bail. + else if (sequence < 0) + return; // short/invalid packet, bail. + else if (frames < 0) + return; // short/invalid packet, bail. + else if (packetsize < 0) + return; // short/invalid packet, bail. + + if (packetsize > sizeof (encoded)) { // overlarge packet? + int bytesleft = packetsize; + while (bytesleft) { + int br = bytesleft; + if (br > sizeof (encoded)) + br = sizeof (encoded); + MSG_ReadData(msg, encoded, br); + bytesleft -= br; + } + return; // overlarge packet, bail. + } + + MSG_ReadData(msg, encoded, packetsize); + + if (ignoreData) { + return; // just ignore legacy speex voip data + } else if (!clc.voipCodecInitialized) { + return; // can't handle VoIP without libopus! + } else if (sender >= MAX_CLIENTS) { + return; // bogus sender. + } else if (CL_ShouldIgnoreVoipSender(sender)) { + return; // Channel is muted, bail. + } + + // !!! FIXME: make sure data is narrowband? Does decoder handle this? + + Com_DPrintf("VoIP: packet accepted!\n"); + + seqdiff = sequence - clc.voipIncomingSequence[sender]; + + // This is a new "generation" ... a new recording started, reset the bits. + if (generation != clc.voipIncomingGeneration[sender]) { + Com_DPrintf("VoIP: new generation %d!\n", generation); + opus_decoder_ctl(clc.opusDecoder[sender], OPUS_RESET_STATE); + clc.voipIncomingGeneration[sender] = generation; + seqdiff = 0; + } else if (seqdiff < 0) { // we're ahead of the sequence?! + // This shouldn't happen unless the packet is corrupted or something. + Com_DPrintf("VoIP: misordered sequence! %d < %d!\n", + sequence, clc.voipIncomingSequence[sender]); + // reset the decoder just in case. + opus_decoder_ctl(clc.opusDecoder[sender], OPUS_RESET_STATE); + seqdiff = 0; + } else if (seqdiff * VOIP_MAX_PACKET_SAMPLES*2 >= sizeof (decoded)) { // dropped more than we can handle? + // just start over. + Com_DPrintf("VoIP: Dropped way too many (%d) frames from client #%d\n", + seqdiff, sender); + opus_decoder_ctl(clc.opusDecoder[sender], OPUS_RESET_STATE); + seqdiff = 0; + } + + if (seqdiff != 0) { + Com_DPrintf("VoIP: Dropped %d frames from client #%d\n", + seqdiff, sender); + // tell opus that we're missing frames... + for (i = 0; i < seqdiff; i++) { + assert((written + VOIP_MAX_PACKET_SAMPLES) * 2 < sizeof (decoded)); + numSamples = opus_decode(clc.opusDecoder[sender], NULL, 0, decoded + written, VOIP_MAX_PACKET_SAMPLES, 0); + if ( numSamples <= 0 ) { + Com_DPrintf("VoIP: Error decoding frame %d from client #%d\n", i, sender); + continue; + } + written += numSamples; + } + } + + numSamples = opus_decode(clc.opusDecoder[sender], + (const unsigned char*)encoded, + packetsize, + decoded + written, + ARRAY_LEN(decoded) - written, + 0); + + if ( numSamples <= 0 ) { + Com_DPrintf("VoIP: Error decoding voip data from client #%d\n", sender); + numSamples = 0; + } + + #if 0 + static FILE *encio = NULL; + if (encio == NULL) encio = fopen("voip-incoming-encoded.bin", "wb"); + if (encio != NULL) { fwrite(encoded, len, 1, encio); fflush(encio); } + static FILE *decio = NULL; + if (decio == NULL) decio = fopen("voip-incoming-decoded.bin", "wb"); + if (decio != NULL) { fwrite(decoded+written, clc.speexFrameSize*2, 1, decio); fflush(decio); } + #endif + + written += numSamples; + + Com_DPrintf("VoIP: playback %d bytes, %d samples, %d frames\n", + written * 2, written, frames); + + if(written > 0) + CL_PlayVoip(sender, written, (const byte *) decoded, flags); + + clc.voipIncomingSequence[sender] = sequence + frames; +} +#endif + + +/* +===================== +CL_ParseCommandString + +Command strings are just saved off until cgame asks for them +when it transitions a snapshot +===================== +*/ +void CL_ParseCommandString( msg_t *msg ) { + char *s; + int seq; + int index; + + seq = MSG_ReadLong( msg ); + s = MSG_ReadString( msg ); + + // see if we have already executed stored it off + if ( clc.serverCommandSequence >= seq ) { + return; + } + clc.serverCommandSequence = seq; + + index = seq & (MAX_RELIABLE_COMMANDS-1); + Q_strncpyz( clc.serverCommands[ index ], s, sizeof( clc.serverCommands[ index ] ) ); +} + + +/* +===================== +CL_ParseServerMessage +===================== +*/ +void CL_ParseServerMessage( msg_t *msg ) { + int cmd; + + if ( cl_shownet->integer == 1 ) { + Com_Printf ("%i ",msg->cursize); + } else if ( cl_shownet->integer >= 2 ) { + Com_Printf ("------------------\n"); + } + + MSG_Bitstream(msg); + + // get the reliable sequence acknowledge number + clc.reliableAcknowledge = MSG_ReadLong( msg ); + // + if ( clc.reliableAcknowledge < clc.reliableSequence - MAX_RELIABLE_COMMANDS ) { + clc.reliableAcknowledge = clc.reliableSequence; + } + + // + // parse the message + // + while ( 1 ) { + if ( msg->readcount > msg->cursize ) { + Com_Error (ERR_DROP,"CL_ParseServerMessage: read past end of server message"); + break; + } + + cmd = MSG_ReadByte( msg ); + + if ( clc.netchan.alternateProtocol != 0 ) + { + // See if this is an extension command after the EOF, which means we + // got data that a legacy client should ignore. + if ( cmd == svc_EOF && MSG_LookaheadByte( msg ) == svc_voipSpeex ) { + SHOWNET( msg, "EXTENSION" ); + MSG_ReadByte( msg ); // throw the svc_extension byte away. + cmd = MSG_ReadByte( msg ); // something legacy clients can't do! + // sometimes you get a svc_extension at end of stream...dangling + // bits in the huffman decoder giving a bogus value? + if ( cmd == -1 ) { + cmd = svc_EOF; + } + } + + if ( cmd == svc_voipSpeex ) { + cmd = svc_voipSpeex + 1; + } else if ( cmd == svc_voipSpeex + 1 ) { + cmd = svc_voipSpeex; + } + } + + if (cmd == svc_EOF) { + SHOWNET( msg, "END OF MESSAGE" ); + break; + } + + if ( cl_shownet->integer >= 2 ) { + if ( (cmd < 0) || (!svc_strings[cmd]) ) { + Com_Printf( "%3i:BAD CMD %i\n", msg->readcount-1, cmd ); + } else { + SHOWNET( msg, svc_strings[cmd] ); + } + } + + // other commands + switch ( cmd ) { + default: + Com_Error (ERR_DROP,"CL_ParseServerMessage: Illegible server message"); + break; + case svc_nop: + break; + case svc_serverCommand: + CL_ParseCommandString( msg ); + break; + case svc_gamestate: + CL_ParseGamestate( msg ); + break; + case svc_snapshot: + CL_ParseSnapshot( msg ); + break; + case svc_download: + CL_ParseDownload( msg ); + break; + case svc_voipSpeex: +#ifdef USE_VOIP + CL_ParseVoip( msg, true ); +#endif + break; + case svc_voipOpus: +#ifdef USE_VOIP + CL_ParseVoip( msg, !clc.voipEnabled ); +#endif + break; + } + } +} -- cgit