MercuryTextureManager.h

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#ifndef MERCURYTEXTUREMANAGER_H
#define MERCURYTEXTUREMANAGER_H

#include "MercuryString.h"
#include "MercuryTexture.h"
#include "MercuryUtil.h"
#include "MercuryFiles.h"
#include "MercuryThreads.h"
#include "MercuryCallback.h"
#include "MercuryMessages.h"
#include "MercuryTexture.h"

using namespace std;

class TextureID
{
public:
    ~TextureID();
    TextureID(const MString& path, bool loadPending = false);
    bool RemoveTexturePtr(const MercuryTexture* texture);
    void UpdateTextureData(MercuryTexture* texture);
    void CreateCache(MercuryTexture* texture);

    unsigned int m_ID;
    MVector<const MercuryTexture*> m_textures;  //Pointers to textures using this ID

    ImageAttrs m_attrs;
    MString m_path;
    bool m_loadPending;
};

class MercuryTextureManager : public MercuryMessageHandler
{
    struct ThreadLoadData
    {
        ThreadLoadData(const MString& p, const MercuryTexture* t, RawImageData* data = NULL)
            :path(p), texture(t), d(data)
        {}
        MString path;
        const MercuryTexture* texture;
        RawImageData* d;
    };
public:
    MercuryTextureManager();
    virtual ~MercuryTextureManager();

    static MercuryTexture* CreateTexture(const MString& path);

    virtual void Message( int Message, PStack & data, const MString & name );

    void CreateThread();
    void ThreadLoop();

    void UpdateTexture(MercuryTexture* texture);
    void Remove(MercuryTexture* texture);
    void Update( const float dTime );
    bool IsTexture(const MercuryTexture* texture);

    inline unsigned int TextureCount() const { return m_textureCount; }
    inline unsigned int UniqueTextureCount() const { return MLockPtr< map<MString, TextureID*> >(m_textureMap, m_mtxMap)->size(); }
    TextureID* FindTexture(const MString& path) const;
    TextureID* FindTexture(const MercuryTexture* texture) { return FindTexture(texture->GetPath()); }
private:
    void Remove(const MString& path, const MercuryTexture* texture);
    void ProcessLoadQueue();
    void ProcessFinalizeQueue();

    bool TryFromExisting(ThreadLoadData* tld);

    TextureID* RegisterNewTexture(const MercuryTexture* t, RawImageData* d, const MString& path);
    RawImageData * LoadDyn( const MString & sFullName, MString & sShortName );
    RawImageData * LoadCube( const MString & sFullName, MString & sShortName );
    RawImageData * LoadDynShadow( const MString & sFullName, MString & sShortName );
    RawImageData * LoadDynCube( const MString & sFullName, MString & sShortName );

    RawImageData* ImageLoader(const MString& path);

    unsigned int m_textureCount;
    volatile map<MString, TextureID*> m_textureMap;

    volatile MDeque<ThreadLoadData*> m_loadQueue;
    volatile MDeque<ThreadLoadData*> m_finalizeLoadQueue;

    MercuryThread m_thread;

    MercuryMutex m_mtxLoadQueue;
    MercuryMutex m_mtxMap;
    MercuryMutex m_mtxFinalize;
};


extern MercuryTextureManager* TEXTMAN;

typedef RawImageData * (*ImageDecoder)( MercuryFile * );

class MercuryImageReaderRegister
{
public:
    void CheckInit();
    void AddDecoder( ImageDecoder, const char * sFingerPrint );
    RawImageData * Decode( MercuryFile * f );
private:
    bool bInit;
    MHash< ImageDecoder > * m_hDecoders;
};

extern MercuryImageReaderRegister IMAGEREADERREGISTER;

#endif

/* 
 * Copyright (c) 2005-2006, Joshua Allen
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 *  -   Redistributions of source code must retain the above
 *      copyright notice, this list of conditions and the following disclaimer.
 *  -   Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in
 *      the documentation and/or other materials provided with the distribution.
 *  -   Neither the name of the Mercury Engine nor the names of its
 *      contributors may be used to endorse or promote products derived from
 *      this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

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