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//========= Copyright Valve Corporation, All rights reserved. ============//
//
//=======================================================================================//
#include "replay_reconstructor.h"
#include "replay/replay.h"
#include "cl_recordingsessionblock.h"
#include "cl_recordingsession.h"
#include "cl_replaycontext.h"
#include "cl_replaymanager.h"
#include "UtlSortVector.h"
#include "demofile/demoformat.h"
#include "lzss.h"
#include "compression.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
//----------------------------------------------------------------------------------------
class CReplay_LessFunc
{
public:
bool Less( const CClientRecordingSessionBlock *pBlock1, const CClientRecordingSessionBlock *pBlock2, void *pCtx )
{
return ( pBlock1->m_iReconstruction < pBlock2->m_iReconstruction );
}
};
//----------------------------------------------------------------------------------------
bool Replay_Reconstruct( CReplay *pReplay, bool bDeleteBlocks/*=true*/ )
{
// Get the session for the given replay
CClientRecordingSession *pSession = CL_CastSession( CL_GetRecordingSessionManager()->FindSession( pReplay->m_hSession ) );
if ( !pSession )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_BadSession" );
return false;
}
// Dynamically load blocks for the session
pSession->LoadBlocksForSession();
// How many blocks needed
const int nNumBlocksNeeded = pReplay->m_iMaxSessionBlockRequired + 1;
// Enough blocks to proceed?
const CBaseRecordingSession::BlockContainer_t &vecAllBlocks = pSession->GetBlocks();
if ( vecAllBlocks.Count() < nNumBlocksNeeded )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_NotEnoughBlocksForReconstruction" );
return false;
}
// Add needed blocks in sorted order
CUtlSortVector< const CClientRecordingSessionBlock *, CReplay_LessFunc > vecReplayBlocks;
FOR_EACH_VEC( vecAllBlocks, i )
{
const CClientRecordingSessionBlock *pCurBlock = CL_CastBlock( vecAllBlocks[ i ] );
// Don't add more blocks than are needed
if ( pCurBlock->m_iReconstruction >= nNumBlocksNeeded )
continue;
// Sorted insert
vecReplayBlocks.Insert( pCurBlock );
}
// Now we need to do an integrity check on all blocks
int iLastReconstructionIndex = 0; // All replay reconstruction will start with block 0
FOR_EACH_VEC( vecReplayBlocks, i )
{
const CClientRecordingSessionBlock *pCurBlock = vecReplayBlocks[ i ];
// Haven't downloaded yet or failed to download for some reason?
if ( !pCurBlock->DownloadedSuccessfully() )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_BlocksNotDLd" );
return false;
}
// Check against reconstruction indices and make sure the list is continuous
if ( pCurBlock->m_iReconstruction - iLastReconstructionIndex > 1 )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_NonContinuous" );
return false;
}
// Cache for next iteration
iLastReconstructionIndex = pCurBlock->m_iReconstruction;
}
// Open the target, reconstruction file - "<session_name>_<replay handle>.dem"
CUtlString strReconstructedFileFilename;
strReconstructedFileFilename.Format( "%s%s_%i.dem", CL_GetReplayManager()->GetIndexPath(), pSession->m_strName.Get(), pReplay->GetHandle() );
FileHandle_t hReconstructedFile = g_pFullFileSystem->Open( strReconstructedFileFilename.Get(), "wb" );
if ( hReconstructedFile == FILESYSTEM_INVALID_HANDLE )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_OpenOutFile" );
return false;
}
// Now that we have an ordered list of replays to reconstruct, create the mother file
bool bFailed = false;
FOR_EACH_VEC( vecReplayBlocks, i )
{
const CClientRecordingSessionBlock *pCurBlock = vecReplayBlocks[ i ];
// Open the partial file for the current replay
const char *pFilename = pCurBlock->m_szFullFilename;
FileHandle_t hBlockFile = g_pFullFileSystem->Open( pFilename, "rb" );
if ( hBlockFile == FILESYSTEM_INVALID_HANDLE )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_BlockDNE" );
bFailed = true;
break;
}
int nSize = g_pFullFileSystem->Size( hBlockFile );
if ( nSize == 0 )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_ZeroLengthBlock" );
bFailed = true;
break;
}
char *pBuffer = (char *)new char[ nSize ];
if ( !pBuffer )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_OutOfMemory" );
bFailed = true;
}
else
{
// Read the file
if ( nSize != g_pFullFileSystem->Read( pBuffer, nSize, hBlockFile ) )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_FailedToRead" );
bFailed = true;
}
else
{
// Decompress if necessary
CompressorType_t nCompressorType = (CompressorType_t)pCurBlock->m_nCompressorType;
if ( nCompressorType != COMPRESSORTYPE_INVALID )
{
ICompressor *pCompressor = CreateCompressor( nCompressorType );
if ( !pCompressor )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_DecompressorCreate" );
bFailed = true;
}
else
{
const unsigned int nCompressedSize = nSize;
unsigned int nUncompressedSize = pCurBlock->m_uUncompressedSize;
char *pUncompressedBuffer = new char[ nUncompressedSize ];
if ( !pUncompressedBuffer )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_Alloc" );
bFailed = true;
}
else
{
if ( !nUncompressedSize )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_UncompressedSizeIsZero" );
bFailed = true;
}
else if ( !pCompressor->Decompress( pUncompressedBuffer, &nUncompressedSize, pBuffer, nCompressedSize ) )
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_Decompression" );
bFailed = true;
}
}
if ( bFailed )
{
delete [] pUncompressedBuffer;
}
else
{
// Overwrite buffer pointer and buffer size
pBuffer = pUncompressedBuffer;
nSize = nUncompressedSize;
}
// Free compressor
delete pCompressor;
}
}
// Append the read data to the mother file
if ( g_pFullFileSystem->Write( pBuffer, nSize, hReconstructedFile ) == nSize )
{
g_pFullFileSystem->Close( hBlockFile );
}
else
{
CL_GetErrorSystem()->AddErrorFromTokenName( "#Replay_Err_Recon_FailedToWrite" );
bFailed = true;
}
}
}
// Free
delete [] pBuffer;
}
if ( !bFailed )
{
// Add dem_stop - embed the calculated end tick
const int nLengthInTicks = g_pEngine->TimeToTicks( pReplay->m_flLength );
int nLastTick = 0;
if ( nLengthInTicks > 0 )
{
nLastTick = pReplay->m_nSpawnTick + nLengthInTicks;
}
unsigned char szEndTickBuf[4];
*( (int32 *)szEndTickBuf ) = nLastTick;
unsigned char szStopBuf[] = { dem_stop, szEndTickBuf[0], szEndTickBuf[1], szEndTickBuf[2], szEndTickBuf[3], 0 };
int nStopSize = sizeof( szStopBuf );
if ( g_pFullFileSystem->Write( szStopBuf, nStopSize, hReconstructedFile ) != nStopSize )
{
Warning( "Replay: Failed to write stop bits to reconstructed replay file \"%s\"\n", strReconstructedFileFilename.Get() );
// Should still run fine
}
// Save reconstructed filename, which will serve to indicate whether the
// replay's been successfully reconstructed or not.
pReplay->m_strReconstructedFilename = strReconstructedFileFilename;
// Mark the replay for flush
CL_GetReplayManager()->FlagForFlush( pReplay, true );
// Delete blocks - removes from session, session block manager, and from disk if no other replays are depending on them.
if ( bDeleteBlocks )
{
pSession->DeleteBlocks();
}
}
// Close reconstructed file
g_pFullFileSystem->Close( hReconstructedFile );
return true;
}
//----------------------------------------------------------------------------------------
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