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/**
* @file lltexturefetch.h
* @brief Object for managing texture fetches.
*
* $LicenseInfo:firstyear=2000&license=viewergpl$
*
* Copyright (c) 2000-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#ifndef LL_LLTEXTUREFETCH_H
#define LL_LLTEXTUREFETCH_H
#include "lldir.h"
#include "llimage.h"
#include "lluuid.h"
#include "llworkerthread.h"
#include "llcurl.h"
#include "lltextureinfo.h"
class LLViewerTexture;
class LLTextureFetchWorker;
class HTTPGetResponder;
class LLTextureCache;
class LLImageDecodeThread;
class LLHost;
// Interface class
class LLTextureFetch : public LLWorkerThread
{
friend class LLTextureFetchWorker;
friend class HTTPGetResponder;
public:
LLTextureFetch(LLTextureCache* cache, LLImageDecodeThread* imagedecodethread, bool threaded);
~LLTextureFetch();
/*virtual*/ S32 update(U32 max_time_ms);
void shutDownTextureCacheThread() ; //called in the main thread after the TextureCacheThread shuts down.
void shutDownImageDecodeThread() ; //called in the main thread after the ImageDecodeThread shuts down.
bool createRequest(const std::string& url, const LLUUID& id, const LLHost& host, F32 priority,
S32 w, S32 h, S32 c, S32 discard, bool needs_aux, bool can_use_http);
void deleteRequest(const LLUUID& id, bool cancel);
bool getRequestFinished(const LLUUID& id, S32& discard_level,
LLPointer<LLImageRaw>& raw, LLPointer<LLImageRaw>& aux);
bool updateRequestPriority(const LLUUID& id, F32 priority);
bool receiveImageHeader(const LLHost& host, const LLUUID& id, U8 codec, U16 packets, U32 totalbytes, U16 data_size, U8* data);
bool receiveImagePacket(const LLHost& host, const LLUUID& id, U16 packet_num, U16 data_size, U8* data);
void setTextureBandwidth(F32 bandwidth) { mTextureBandwidth = bandwidth; }
F32 getTextureBandwidth() { return mTextureBandwidth; }
// Debug
BOOL isFromLocalCache(const LLUUID& id);
S32 getFetchState(const LLUUID& id, F32& decode_progress_p, F32& requested_priority_p,
U32& fetch_priority_p, F32& fetch_dtime_p, F32& request_dtime_p, bool& can_use_http);
void dump();
S32 getNumRequests() ;
S32 getNumHTTPRequests() ;
// Public for access by callbacks
void lockQueue() { mQueueMutex.lock(); }
void unlockQueue() { mQueueMutex.unlock(); }
LLTextureFetchWorker* getWorker(const LLUUID& id);
LLTextureFetchWorker* getWorkerAfterLock(const LLUUID& id);
LLTextureInfo* getTextureInfo() { return &mTextureInfo; }
protected:
void addToNetworkQueue(LLTextureFetchWorker* worker);
void removeFromNetworkQueue(LLTextureFetchWorker* worker, bool cancel);
void addToHTTPQueue(const LLUUID& id);
void removeFromHTTPQueue(const LLUUID& id, S32 received_size = 0);
void removeRequest(LLTextureFetchWorker* worker, bool cancel);
// Called from worker thread (during doWork)
void processCurlRequests();
private:
void sendRequestListToSimulators();
/*virtual*/ void startThread(void);
/*virtual*/ void endThread(void);
/*virtual*/ void threadedUpdate(void);
public:
LLUUID mDebugID;
S32 mDebugCount;
BOOL mDebugPause;
S32 mPacketCount;
S32 mBadPacketCount;
private:
LLMutex mQueueMutex; //to protect mRequestMap only
LLMutex mNetworkQueueMutex; //to protect mNetworkQueue, mHTTPTextureQueue and mCancelQueue.
LLTextureCache* mTextureCache;
LLImageDecodeThread* mImageDecodeThread;
LLCurlRequest* mCurlGetRequest;
// Map of all requests by UUID
typedef std::map<LLUUID,LLTextureFetchWorker*> map_t;
map_t mRequestMap;
// Set of requests that require network data
typedef std::set<LLUUID> queue_t;
queue_t mNetworkQueue;
queue_t mHTTPTextureQueue;
typedef std::map<LLHost,std::set<LLUUID> > cancel_queue_t;
cancel_queue_t mCancelQueue;
F32 mTextureBandwidth;
F32 mMaxBandwidth;
LLTextureInfo mTextureInfo;
U32 mHTTPTextureBits;
};
#endif // LL_LLTEXTUREFETCH_H
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