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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================
#ifndef CAPTIONCOMPILER_H
#define CAPTIONCOMPILER_H
#ifdef _WIN32
#pragma once
#endif
#include "datamap.h"
#include "checksum_crc.h"
#define MAX_BLOCK_BITS 13
#define MAX_BLOCK_SIZE (1<<MAX_BLOCK_BITS )
#define COMPILED_CAPTION_FILEID MAKEID( 'V', 'C', 'C', 'D' )
#define COMPILED_CAPTION_VERSION 1
#pragma pack(1)
struct CompiledCaptionHeader_t
{
DECLARE_BYTESWAP_DATADESC()
int magic;
int version;
int numblocks;
int blocksize;
int directorysize;
int dataoffset;
};
struct CaptionLookup_t
{
DECLARE_BYTESWAP_DATADESC()
unsigned int hash;
int blockNum;
unsigned short offset;
unsigned short length;
void SetHash( char const *string )
{
int len = Q_strlen( string );
char *tempstr = (char *)_alloca( len + 1 );
Q_strncpy( tempstr, string, len + 1 );
Q_strlower( tempstr );
CRC32_t temp;
CRC32_Init( &temp );
CRC32_ProcessBuffer( &temp, tempstr, len );
CRC32_Final( &temp );
hash = ( unsigned int )temp;
}
};
#pragma pack()
class CCaptionLookupLess
{
public:
bool Less( const CaptionLookup_t& lhs, const CaptionLookup_t& rhs, void *pContext )
{
return lhs.hash < rhs.hash;
}
};
struct CaptionBlock_t
{
byte data[ MAX_BLOCK_SIZE ];
};
// For swapping compiled caption files
bool SwapClosecaptionFile( void *pData );
int UpdateOrCreateCaptionFile( const char *pSourceName, char *pTargetName, int targetLen, bool bForce = false );
#endif // CAPTIONCOMPILER_H
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