xash3d-fwgs/engine/common/hpak.h

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/*
hpak.c - custom user package to send other clients
Copyright (C) 2010 Uncle Mike
This program 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.
This program 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.
*/
#ifndef HPAK_H
#define HPAK_H
#include "custom.h"
/*
========================================================================
.HPK archive format (Hash PAK - HPK)
List of compressed files, that can be identify only by TYPE_*
<format>
header: dwadinfo_t[dwadinfo_t]
file_1: byte[dwadinfo_t[num]->disksize]
file_2: byte[dwadinfo_t[num]->disksize]
file_3: byte[dwadinfo_t[num]->disksize]
...
file_n: byte[dwadinfo_t[num]->disksize]
infotable dlumpinfo_t[dwadinfo_t->numlumps]
========================================================================
*/
#define IDHPAKHEADER (('K'<<24)+('A'<<16)+('P'<<8)+'H') // little-endian "HPAK"
#define IDHPAK_VERSION 1
// a1ba: because Valve for some reason writes resource_t to file
// I had to make it crossplatform version
#pragma pack( push, 8 )
typedef struct dresource_s
{
char szFileName[64]; /* 0 64 */
/* --- cacheline 1 boundary (64 bytes) --- */
resourcetype_t type; /* 64 4 */
int nIndex; /* 68 4 */
int nDownloadSize; /* 72 4 */
unsigned char ucFlags; /* 76 1 */
unsigned char rgucMD5_hash[16]; /* 77 16 */
unsigned char playernum; /* 93 1 */
unsigned char rguc_reserved[32]; /* 94 32 */
/* XXX 2 bytes hole, try to pack */
/* --- cacheline 2 boundary (128 bytes) --- */
uint32_t pNext; /* 128 4 */
uint32_t pPrev; /* 132 4 */
/* size: 136, cachelines: 3, members: 10 */
/* sum members: 134, holes: 1, sum holes: 2 */
/* last cacheline: 8 bytes */
} dresource_t;
#pragma pack( pop )
STATIC_ASSERT( sizeof( dresource_t ) == 136, "invalid dresource_t size, HPAKs won't be compatible (no custom logo in multiplayer!)" );
typedef struct
{
int ident; // should be equal HPAK
int version;
int infotableofs;
} hpak_header_t;
typedef struct
{
dresource_t resource;
int filepos;
int disksize;
} hpak_lump_t;
typedef struct
{
int count;
hpak_lump_t *entries; // variable sized.
} hpak_info_t;
#endif // HPAK_H