mirror of
https://github.com/dhewm/dhewm3-sdk.git
synced 2024-11-22 04:31:15 +00:00
afebd7e1e5
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
1067 lines
22 KiB
C++
1067 lines
22 KiB
C++
/*
|
|
===========================================================================
|
|
|
|
Doom 3 GPL Source Code
|
|
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
|
|
|
|
This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
|
|
|
|
Doom 3 Source Code 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.
|
|
|
|
Doom 3 Source Code 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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
|
|
|
|
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
|
|
|
|
===========================================================================
|
|
*/
|
|
|
|
#include "sys/platform.h"
|
|
|
|
#include "idlib/BitMsg.h"
|
|
|
|
/*
|
|
==============================================================================
|
|
|
|
idBitMsg
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
/*
|
|
================
|
|
idBitMsg::idBitMsg
|
|
================
|
|
*/
|
|
idBitMsg::idBitMsg() {
|
|
writeData = NULL;
|
|
readData = NULL;
|
|
maxSize = 0;
|
|
curSize = 0;
|
|
writeBit = 0;
|
|
readCount = 0;
|
|
readBit = 0;
|
|
allowOverflow = false;
|
|
overflowed = false;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::CheckOverflow
|
|
================
|
|
*/
|
|
bool idBitMsg::CheckOverflow( int numBits ) {
|
|
assert( numBits >= 0 );
|
|
if ( numBits > GetRemainingWriteBits() ) {
|
|
if ( !allowOverflow ) {
|
|
idLib::common->FatalError( "idBitMsg: overflow without allowOverflow set" );
|
|
}
|
|
if ( numBits > ( maxSize << 3 ) ) {
|
|
idLib::common->FatalError( "idBitMsg: %i bits is > full message size", numBits );
|
|
}
|
|
idLib::common->Printf( "idBitMsg: overflow\n" );
|
|
BeginWriting();
|
|
overflowed = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::GetByteSpace
|
|
================
|
|
*/
|
|
byte *idBitMsg::GetByteSpace( int length ) {
|
|
byte *ptr;
|
|
|
|
if ( !writeData ) {
|
|
idLib::common->FatalError( "idBitMsg::GetByteSpace: cannot write to message" );
|
|
}
|
|
|
|
// round up to the next byte
|
|
WriteByteAlign();
|
|
|
|
// check for overflow
|
|
CheckOverflow( length << 3 );
|
|
|
|
ptr = writeData + curSize;
|
|
curSize += length;
|
|
return ptr;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteBits
|
|
|
|
If the number of bits is negative a sign is included.
|
|
================
|
|
*/
|
|
void idBitMsg::WriteBits( int value, int numBits ) {
|
|
int put;
|
|
int fraction;
|
|
|
|
if ( !writeData ) {
|
|
idLib::common->Error( "idBitMsg::WriteBits: cannot write to message" );
|
|
}
|
|
|
|
// check if the number of bits is valid
|
|
if ( numBits == 0 || numBits < -31 || numBits > 32 ) {
|
|
idLib::common->Error( "idBitMsg::WriteBits: bad numBits %i", numBits );
|
|
}
|
|
|
|
// check for value overflows
|
|
// this should be an error really, as it can go unnoticed and cause either bandwidth or corrupted data transmitted
|
|
if ( numBits != 32 ) {
|
|
if ( numBits > 0 ) {
|
|
if ( value > ( 1 << numBits ) - 1 ) {
|
|
idLib::common->Warning( "idBitMsg::WriteBits: value overflow %d %d", value, numBits );
|
|
} else if ( value < 0 ) {
|
|
idLib::common->Warning( "idBitMsg::WriteBits: value overflow %d %d", value, numBits );
|
|
}
|
|
} else {
|
|
int r = 1 << ( - 1 - numBits );
|
|
if ( value > r - 1 ) {
|
|
idLib::common->Warning( "idBitMsg::WriteBits: value overflow %d %d", value, numBits );
|
|
} else if ( value < -r ) {
|
|
idLib::common->Warning( "idBitMsg::WriteBits: value overflow %d %d", value, numBits );
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( numBits < 0 ) {
|
|
numBits = -numBits;
|
|
}
|
|
|
|
// check for msg overflow
|
|
if ( CheckOverflow( numBits ) ) {
|
|
return;
|
|
}
|
|
|
|
// write the bits
|
|
while( numBits ) {
|
|
if ( writeBit == 0 ) {
|
|
writeData[curSize] = 0;
|
|
curSize++;
|
|
}
|
|
put = 8 - writeBit;
|
|
if ( put > numBits ) {
|
|
put = numBits;
|
|
}
|
|
fraction = value & ( ( 1 << put ) - 1 );
|
|
writeData[curSize - 1] |= fraction << writeBit;
|
|
numBits -= put;
|
|
value >>= put;
|
|
writeBit = ( writeBit + put ) & 7;
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteString
|
|
================
|
|
*/
|
|
void idBitMsg::WriteString( const char *s, int maxLength, bool make7Bit ) {
|
|
if ( !s ) {
|
|
WriteData( "", 1 );
|
|
} else {
|
|
int i, l;
|
|
byte *dataPtr;
|
|
const byte *bytePtr;
|
|
|
|
l = idStr::Length( s );
|
|
if ( maxLength >= 0 && l >= maxLength ) {
|
|
l = maxLength - 1;
|
|
}
|
|
dataPtr = GetByteSpace( l + 1 );
|
|
bytePtr = reinterpret_cast<const byte *>(s);
|
|
if ( make7Bit ) {
|
|
for ( i = 0; i < l; i++ ) {
|
|
if ( bytePtr[i] > 127 ) {
|
|
dataPtr[i] = '.';
|
|
} else {
|
|
dataPtr[i] = bytePtr[i];
|
|
}
|
|
}
|
|
} else {
|
|
for ( i = 0; i < l; i++ ) {
|
|
dataPtr[i] = bytePtr[i];
|
|
}
|
|
}
|
|
dataPtr[i] = '\0';
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteData
|
|
================
|
|
*/
|
|
void idBitMsg::WriteData( const void *data, int length ) {
|
|
memcpy( GetByteSpace( length ), data, length );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteNetadr
|
|
================
|
|
*/
|
|
void idBitMsg::WriteNetadr( const netadr_t adr ) {
|
|
byte *dataPtr;
|
|
dataPtr = GetByteSpace( 4 );
|
|
memcpy( dataPtr, adr.ip, 4 );
|
|
WriteUShort( adr.port );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteDelta
|
|
================
|
|
*/
|
|
void idBitMsg::WriteDelta( int oldValue, int newValue, int numBits ) {
|
|
if ( oldValue == newValue ) {
|
|
WriteBits( 0, 1 );
|
|
return;
|
|
}
|
|
WriteBits( 1, 1 );
|
|
WriteBits( newValue, numBits );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteDeltaByteCounter
|
|
================
|
|
*/
|
|
void idBitMsg::WriteDeltaByteCounter( int oldValue, int newValue ) {
|
|
int i, x;
|
|
|
|
x = oldValue ^ newValue;
|
|
for ( i = 7; i > 0; i-- ) {
|
|
if ( x & ( 1 << i ) ) {
|
|
i++;
|
|
break;
|
|
}
|
|
}
|
|
WriteBits( i, 3 );
|
|
if ( i ) {
|
|
WriteBits( ( ( 1 << i ) - 1 ) & newValue, i );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteDeltaShortCounter
|
|
================
|
|
*/
|
|
void idBitMsg::WriteDeltaShortCounter( int oldValue, int newValue ) {
|
|
int i, x;
|
|
|
|
x = oldValue ^ newValue;
|
|
for ( i = 15; i > 0; i-- ) {
|
|
if ( x & ( 1 << i ) ) {
|
|
i++;
|
|
break;
|
|
}
|
|
}
|
|
WriteBits( i, 4 );
|
|
if ( i ) {
|
|
WriteBits( ( ( 1 << i ) - 1 ) & newValue, i );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::WriteDeltaLongCounter
|
|
================
|
|
*/
|
|
void idBitMsg::WriteDeltaLongCounter( int oldValue, int newValue ) {
|
|
int i, x;
|
|
|
|
x = oldValue ^ newValue;
|
|
for ( i = 31; i > 0; i-- ) {
|
|
if ( x & ( 1 << i ) ) {
|
|
i++;
|
|
break;
|
|
}
|
|
}
|
|
WriteBits( i, 5 );
|
|
if ( i ) {
|
|
WriteBits( ( ( 1 << i ) - 1 ) & newValue, i );
|
|
}
|
|
}
|
|
|
|
/*
|
|
==================
|
|
idBitMsg::WriteDeltaDict
|
|
==================
|
|
*/
|
|
bool idBitMsg::WriteDeltaDict( const idDict &dict, const idDict *base ) {
|
|
int i;
|
|
const idKeyValue *kv, *basekv;
|
|
bool changed = false;
|
|
|
|
if ( base != NULL ) {
|
|
|
|
for ( i = 0; i < dict.GetNumKeyVals(); i++ ) {
|
|
kv = dict.GetKeyVal( i );
|
|
basekv = base->FindKey( kv->GetKey() );
|
|
if ( basekv == NULL || basekv->GetValue().Icmp( kv->GetValue() ) != 0 ) {
|
|
WriteString( kv->GetKey() );
|
|
WriteString( kv->GetValue() );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
WriteString( "" );
|
|
|
|
for ( i = 0; i < base->GetNumKeyVals(); i++ ) {
|
|
basekv = base->GetKeyVal( i );
|
|
kv = dict.FindKey( basekv->GetKey() );
|
|
if ( kv == NULL ) {
|
|
WriteString( basekv->GetKey() );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
WriteString( "" );
|
|
|
|
} else {
|
|
|
|
for ( i = 0; i < dict.GetNumKeyVals(); i++ ) {
|
|
kv = dict.GetKeyVal( i );
|
|
WriteString( kv->GetKey() );
|
|
WriteString( kv->GetValue() );
|
|
changed = true;
|
|
}
|
|
WriteString( "" );
|
|
|
|
WriteString( "" );
|
|
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadBits
|
|
|
|
If the number of bits is negative a sign is included.
|
|
================
|
|
*/
|
|
int idBitMsg::ReadBits( int numBits ) const {
|
|
int value;
|
|
int valueBits;
|
|
int get;
|
|
int fraction;
|
|
bool sgn;
|
|
|
|
if ( !readData ) {
|
|
idLib::common->FatalError( "idBitMsg::ReadBits: cannot read from message" );
|
|
}
|
|
|
|
// check if the number of bits is valid
|
|
if ( numBits == 0 || numBits < -31 || numBits > 32 ) {
|
|
idLib::common->FatalError( "idBitMsg::ReadBits: bad numBits %i", numBits );
|
|
}
|
|
|
|
value = 0;
|
|
valueBits = 0;
|
|
|
|
if ( numBits < 0 ) {
|
|
numBits = -numBits;
|
|
sgn = true;
|
|
} else {
|
|
sgn = false;
|
|
}
|
|
|
|
// check for overflow
|
|
if ( numBits > GetRemainingReadBits() ) {
|
|
return -1;
|
|
}
|
|
|
|
while ( valueBits < numBits ) {
|
|
if ( readBit == 0 ) {
|
|
readCount++;
|
|
}
|
|
get = 8 - readBit;
|
|
if ( get > (numBits - valueBits) ) {
|
|
get = numBits - valueBits;
|
|
}
|
|
fraction = readData[readCount - 1];
|
|
fraction >>= readBit;
|
|
fraction &= ( 1 << get ) - 1;
|
|
value |= fraction << valueBits;
|
|
|
|
valueBits += get;
|
|
readBit = ( readBit + get ) & 7;
|
|
}
|
|
|
|
if ( sgn ) {
|
|
if ( value & ( 1 << ( numBits - 1 ) ) ) {
|
|
value |= -1 ^ ( ( 1 << numBits ) - 1 );
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadString
|
|
================
|
|
*/
|
|
int idBitMsg::ReadString( char *buffer, int bufferSize ) const {
|
|
int l, c;
|
|
|
|
ReadByteAlign();
|
|
l = 0;
|
|
while( 1 ) {
|
|
c = ReadByte();
|
|
if ( c <= 0 || c >= 255 ) {
|
|
break;
|
|
}
|
|
// translate all fmt spec to avoid crash bugs in string routines
|
|
if ( c == '%' ) {
|
|
c = '.';
|
|
}
|
|
|
|
// we will read past any excessively long string, so
|
|
// the following data can be read, but the string will
|
|
// be truncated
|
|
if ( l < bufferSize - 1 ) {
|
|
buffer[l] = c;
|
|
l++;
|
|
}
|
|
}
|
|
|
|
buffer[l] = 0;
|
|
return l;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadData
|
|
================
|
|
*/
|
|
int idBitMsg::ReadData( void *data, int length ) const {
|
|
int cnt;
|
|
|
|
ReadByteAlign();
|
|
cnt = readCount;
|
|
|
|
if ( readCount + length > curSize ) {
|
|
if ( data ) {
|
|
memcpy( data, readData + readCount, GetRemaingData() );
|
|
}
|
|
readCount = curSize;
|
|
} else {
|
|
if ( data ) {
|
|
memcpy( data, readData + readCount, length );
|
|
}
|
|
readCount += length;
|
|
}
|
|
|
|
return ( readCount - cnt );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadNetadr
|
|
================
|
|
*/
|
|
void idBitMsg::ReadNetadr( netadr_t *adr ) const {
|
|
int i;
|
|
|
|
adr->type = NA_IP;
|
|
for ( i = 0; i < 4; i++ ) {
|
|
adr->ip[ i ] = ReadByte();
|
|
}
|
|
adr->port = ReadUShort();
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadDelta
|
|
================
|
|
*/
|
|
int idBitMsg::ReadDelta( int oldValue, int numBits ) const {
|
|
if ( ReadBits( 1 ) ) {
|
|
return ReadBits( numBits );
|
|
}
|
|
return oldValue;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadDeltaByteCounter
|
|
================
|
|
*/
|
|
int idBitMsg::ReadDeltaByteCounter( int oldValue ) const {
|
|
int i, newValue;
|
|
|
|
i = ReadBits( 3 );
|
|
if ( !i ) {
|
|
return oldValue;
|
|
}
|
|
newValue = ReadBits( i );
|
|
return ( (oldValue & ~( ( 1 << i ) - 1 ) ) | newValue );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadDeltaShortCounter
|
|
================
|
|
*/
|
|
int idBitMsg::ReadDeltaShortCounter( int oldValue ) const {
|
|
int i, newValue;
|
|
|
|
i = ReadBits( 4 );
|
|
if ( !i ) {
|
|
return oldValue;
|
|
}
|
|
newValue = ReadBits( i );
|
|
return ( (oldValue & ~( ( 1 << i ) - 1 ) ) | newValue );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::ReadDeltaLongCounter
|
|
================
|
|
*/
|
|
int idBitMsg::ReadDeltaLongCounter( int oldValue ) const {
|
|
int i, newValue;
|
|
|
|
i = ReadBits( 5 );
|
|
if ( !i ) {
|
|
return oldValue;
|
|
}
|
|
newValue = ReadBits( i );
|
|
return ( ( oldValue & ~( ( 1 << i ) - 1 ) ) | newValue );
|
|
}
|
|
|
|
/*
|
|
==================
|
|
idBitMsg::ReadDeltaDict
|
|
==================
|
|
*/
|
|
bool idBitMsg::ReadDeltaDict( idDict &dict, const idDict *base ) const {
|
|
char key[MAX_STRING_CHARS];
|
|
char value[MAX_STRING_CHARS];
|
|
bool changed = false;
|
|
|
|
if ( base != NULL ) {
|
|
dict = *base;
|
|
} else {
|
|
dict.Clear();
|
|
}
|
|
|
|
while( ReadString( key, sizeof( key ) ) != 0 ) {
|
|
ReadString( value, sizeof( value ) );
|
|
dict.Set( key, value );
|
|
changed = true;
|
|
}
|
|
|
|
while( ReadString( key, sizeof( key ) ) != 0 ) {
|
|
dict.Delete( key );
|
|
changed = true;
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::DirToBits
|
|
================
|
|
*/
|
|
int idBitMsg::DirToBits( const idVec3 &dir, int numBits ) {
|
|
int max, bits;
|
|
float bias;
|
|
|
|
assert( numBits >= 6 && numBits <= 32 );
|
|
assert( dir.LengthSqr() - 1.0f < 0.01f );
|
|
|
|
numBits /= 3;
|
|
max = ( 1 << ( numBits - 1 ) ) - 1;
|
|
bias = 0.5f / max;
|
|
|
|
bits = FLOATSIGNBITSET( dir.x ) << ( numBits * 3 - 1 );
|
|
bits |= ( idMath::Ftoi( ( idMath::Fabs( dir.x ) + bias ) * max ) ) << ( numBits * 2 );
|
|
bits |= FLOATSIGNBITSET( dir.y ) << ( numBits * 2 - 1 );
|
|
bits |= ( idMath::Ftoi( ( idMath::Fabs( dir.y ) + bias ) * max ) ) << ( numBits * 1 );
|
|
bits |= FLOATSIGNBITSET( dir.z ) << ( numBits * 1 - 1 );
|
|
bits |= ( idMath::Ftoi( ( idMath::Fabs( dir.z ) + bias ) * max ) ) << ( numBits * 0 );
|
|
return bits;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsg::BitsToDir
|
|
================
|
|
*/
|
|
idVec3 idBitMsg::BitsToDir( int bits, int numBits ) {
|
|
static float sign[2] = { 1.0f, -1.0f };
|
|
int max;
|
|
float invMax;
|
|
idVec3 dir;
|
|
|
|
assert( numBits >= 6 && numBits <= 32 );
|
|
|
|
numBits /= 3;
|
|
max = ( 1 << ( numBits - 1 ) ) - 1;
|
|
invMax = 1.0f / max;
|
|
|
|
dir.x = sign[( bits >> ( numBits * 3 - 1 ) ) & 1] * ( ( bits >> ( numBits * 2 ) ) & max ) * invMax;
|
|
dir.y = sign[( bits >> ( numBits * 2 - 1 ) ) & 1] * ( ( bits >> ( numBits * 1 ) ) & max ) * invMax;
|
|
dir.z = sign[( bits >> ( numBits * 1 - 1 ) ) & 1] * ( ( bits >> ( numBits * 0 ) ) & max ) * invMax;
|
|
dir.NormalizeFast();
|
|
return dir;
|
|
}
|
|
|
|
|
|
/*
|
|
==============================================================================
|
|
|
|
idBitMsgDelta
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
const int MAX_DATA_BUFFER = 1024;
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteBits
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteBits( int value, int numBits ) {
|
|
if ( newBase ) {
|
|
newBase->WriteBits( value, numBits );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteBits( value, numBits );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( numBits );
|
|
if ( baseValue == value ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteBits( value, numBits );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteDelta
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteDelta( int oldValue, int newValue, int numBits ) {
|
|
if ( newBase ) {
|
|
newBase->WriteBits( newValue, numBits );
|
|
}
|
|
|
|
if ( !base ) {
|
|
if ( oldValue == newValue ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteBits( newValue, numBits );
|
|
}
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( numBits );
|
|
if ( baseValue == newValue ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
if ( oldValue == newValue ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
changed = true;
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteBits( newValue, numBits );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadBits
|
|
================
|
|
*/
|
|
int idBitMsgDelta::ReadBits( int numBits ) const {
|
|
int value;
|
|
|
|
if ( !base ) {
|
|
value = readDelta->ReadBits( numBits );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( numBits );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = baseValue;
|
|
} else {
|
|
value = readDelta->ReadBits( numBits );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteBits( value, numBits );
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadDelta
|
|
================
|
|
*/
|
|
int idBitMsgDelta::ReadDelta( int oldValue, int numBits ) const {
|
|
int value;
|
|
|
|
if ( !base ) {
|
|
if ( readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = oldValue;
|
|
} else {
|
|
value = readDelta->ReadBits( numBits );
|
|
}
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( numBits );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = baseValue;
|
|
} else if ( readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = oldValue;
|
|
changed = true;
|
|
} else {
|
|
value = readDelta->ReadBits( numBits );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteBits( value, numBits );
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteString
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteString( const char *s, int maxLength ) {
|
|
if ( newBase ) {
|
|
newBase->WriteString( s, maxLength );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteString( s, maxLength );
|
|
changed = true;
|
|
} else {
|
|
char baseString[MAX_DATA_BUFFER];
|
|
base->ReadString( baseString, sizeof( baseString ) );
|
|
if ( idStr::Cmp( s, baseString ) == 0 ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteString( s, maxLength );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteData
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteData( const void *data, int length ) {
|
|
if ( newBase ) {
|
|
newBase->WriteData( data, length );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteData( data, length );
|
|
changed = true;
|
|
} else {
|
|
byte baseData[MAX_DATA_BUFFER];
|
|
assert( length < sizeof( baseData ) );
|
|
base->ReadData( baseData, length );
|
|
if ( memcmp( data, baseData, length ) == 0 ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteData( data, length );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteDict
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteDict( const idDict &dict ) {
|
|
if ( newBase ) {
|
|
newBase->WriteDeltaDict( dict, NULL );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteDeltaDict( dict, NULL );
|
|
changed = true;
|
|
} else {
|
|
idDict baseDict;
|
|
base->ReadDeltaDict( baseDict, NULL );
|
|
changed = writeDelta->WriteDeltaDict( dict, &baseDict );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteDeltaByteCounter
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteDeltaByteCounter( int oldValue, int newValue ) {
|
|
if ( newBase ) {
|
|
newBase->WriteBits( newValue, 8 );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteDeltaByteCounter( oldValue, newValue );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( 8 );
|
|
if ( baseValue == newValue ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteDeltaByteCounter( oldValue, newValue );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteDeltaShortCounter
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteDeltaShortCounter( int oldValue, int newValue ) {
|
|
if ( newBase ) {
|
|
newBase->WriteBits( newValue, 16 );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteDeltaShortCounter( oldValue, newValue );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( 16 );
|
|
if ( baseValue == newValue ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteDeltaShortCounter( oldValue, newValue );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::WriteDeltaLongCounter
|
|
================
|
|
*/
|
|
void idBitMsgDelta::WriteDeltaLongCounter( int oldValue, int newValue ) {
|
|
if ( newBase ) {
|
|
newBase->WriteBits( newValue, 32 );
|
|
}
|
|
|
|
if ( !base ) {
|
|
writeDelta->WriteDeltaLongCounter( oldValue, newValue );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( 32 );
|
|
if ( baseValue == newValue ) {
|
|
writeDelta->WriteBits( 0, 1 );
|
|
} else {
|
|
writeDelta->WriteBits( 1, 1 );
|
|
writeDelta->WriteDeltaLongCounter( oldValue, newValue );
|
|
changed = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadString
|
|
================
|
|
*/
|
|
void idBitMsgDelta::ReadString( char *buffer, int bufferSize ) const {
|
|
if ( !base ) {
|
|
readDelta->ReadString( buffer, bufferSize );
|
|
changed = true;
|
|
} else {
|
|
char baseString[MAX_DATA_BUFFER];
|
|
base->ReadString( baseString, sizeof( baseString ) );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
idStr::Copynz( buffer, baseString, bufferSize );
|
|
} else {
|
|
readDelta->ReadString( buffer, bufferSize );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteString( buffer );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadData
|
|
================
|
|
*/
|
|
void idBitMsgDelta::ReadData( void *data, int length ) const {
|
|
if ( !base ) {
|
|
readDelta->ReadData( data, length );
|
|
changed = true;
|
|
} else {
|
|
char baseData[MAX_DATA_BUFFER];
|
|
assert( length < sizeof( baseData ) );
|
|
base->ReadData( baseData, length );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
memcpy( data, baseData, length );
|
|
} else {
|
|
readDelta->ReadData( data, length );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteData( data, length );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadDict
|
|
================
|
|
*/
|
|
void idBitMsgDelta::ReadDict( idDict &dict ) {
|
|
if ( !base ) {
|
|
readDelta->ReadDeltaDict( dict, NULL );
|
|
changed = true;
|
|
} else {
|
|
idDict baseDict;
|
|
base->ReadDeltaDict( baseDict, NULL );
|
|
if ( !readDelta ) {
|
|
dict = baseDict;
|
|
} else {
|
|
changed = readDelta->ReadDeltaDict( dict, &baseDict );
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteDeltaDict( dict, NULL );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadDeltaByteCounter
|
|
================
|
|
*/
|
|
int idBitMsgDelta::ReadDeltaByteCounter( int oldValue ) const {
|
|
int value;
|
|
|
|
if ( !base ) {
|
|
value = readDelta->ReadDeltaByteCounter( oldValue );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( 8 );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = baseValue;
|
|
} else {
|
|
value = readDelta->ReadDeltaByteCounter( oldValue );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteBits( value, 8 );
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadDeltaShortCounter
|
|
================
|
|
*/
|
|
int idBitMsgDelta::ReadDeltaShortCounter( int oldValue ) const {
|
|
int value;
|
|
|
|
if ( !base ) {
|
|
value = readDelta->ReadDeltaShortCounter( oldValue );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( 16 );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = baseValue;
|
|
} else {
|
|
value = readDelta->ReadDeltaShortCounter( oldValue );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteBits( value, 16 );
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idBitMsgDelta::ReadDeltaLongCounter
|
|
================
|
|
*/
|
|
int idBitMsgDelta::ReadDeltaLongCounter( int oldValue ) const {
|
|
int value;
|
|
|
|
if ( !base ) {
|
|
value = readDelta->ReadDeltaLongCounter( oldValue );
|
|
changed = true;
|
|
} else {
|
|
int baseValue = base->ReadBits( 32 );
|
|
if ( !readDelta || readDelta->ReadBits( 1 ) == 0 ) {
|
|
value = baseValue;
|
|
} else {
|
|
value = readDelta->ReadDeltaLongCounter( oldValue );
|
|
changed = true;
|
|
}
|
|
}
|
|
|
|
if ( newBase ) {
|
|
newBase->WriteBits( value, 32 );
|
|
}
|
|
return value;
|
|
}
|