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117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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// Description : Manage async pak files
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#ifndef CRYINCLUDE_CRYSYSTEM_ASYNCPAKMANAGER_H
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#define CRYINCLUDE_CRYSYSTEM_ASYNCPAKMANAGER_H
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#pragma once
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#include <AzCore/std/smart_ptr/intrusive_ptr.h>
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#include <IResourceManager.h>
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#include <IStreamEngine.h>
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namespace AZ::IO
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{
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struct MemoryBlock;
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}
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class CAsyncPakManager
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: public IStreamCallback
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{
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protected:
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struct SAsyncPak
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{
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enum EState
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{
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STATE_UNLOADED,
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STATE_REQUESTED,
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STATE_REQUESTUNLOAD,
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STATE_LOADED,
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};
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enum ELifeTime
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{
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LIFETIME_LOAD_ONLY,
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LIFETIME_LEVEL_COMPLETE,
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LIFETIME_PERMANENT
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};
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SAsyncPak()
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: nRequestCount(0)
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, eState(STATE_UNLOADED)
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, eLifeTime(LIFETIME_LOAD_ONLY)
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, nSize(0)
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, pData(0)
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, bStreaming(false)
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, bPakAlreadyOpen(false)
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, bClosePakOnRelease(false)
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, pReadStream(0) {}
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string& GetStatus(string&) const;
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string layername;
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string filename;
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size_t nSize;
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AZStd::intrusive_ptr<AZ::IO::MemoryBlock> pData;
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EState eState;
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ELifeTime eLifeTime;
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bool bStreaming;
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bool bPakAlreadyOpen;
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bool bClosePakOnRelease;
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int nRequestCount;
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IReadStreamPtr pReadStream;
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};
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typedef std::map<string, SAsyncPak> TPakMap;
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public:
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CAsyncPakManager();
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~CAsyncPakManager();
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void ParseLayerPaks(const string& levelCachePath);
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bool LoadPakToMemAsync(const char* pPath, bool bLevelLoadOnly);
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void UnloadLevelLoadPaks();
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bool LoadLayerPak(const char* sLayerName);
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void UnloadLayerPak(const char* sLayerName);
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void CancelPendingJobs();
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void GetLayerPakStats(SLayerPakStats& stats, bool bCollectAllStats) const;
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void Clear();
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void Update();
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protected:
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bool LoadPak(SAsyncPak& layerPak);
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void StartStreaming(SAsyncPak* pLayerPak);
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void ReleaseData(SAsyncPak* pLayerPak);
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//////////////////////////////////////////////////////////////////////////
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// IStreamCallback interface implementation.
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//////////////////////////////////////////////////////////////////////////
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virtual void StreamAsyncOnComplete (IReadStream* pStream, unsigned nError);
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virtual void StreamOnComplete (IReadStream* pStream, unsigned nError);
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virtual void* StreamOnNeedStorage(IReadStream* pStream, unsigned nSize, bool& bAbortOnFailToAlloc);
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//////////////////////////////////////////////////////////////////////////
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TPakMap m_paks;
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size_t m_nTotalOpenLayerPakSize;
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bool m_bRequestLayerUpdate;
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};
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#endif // CRYINCLUDE_CRYSYSTEM_ASYNCPAKMANAGER_H
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