CWE-ou-minkata/Sources/Plasma/PubUtilLib/plClientResMgr/plClientResMgr.cpp

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
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Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
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*==LICENSE==*/

#include "HeadSpin.h"

#include "hsStream.h"
#include "hsResMgr.h"
#include "plJPEG/plJPEG.h"
#include "plGImage/plPNG.h"
#include "plGImage/plMipmap.h"

#include "plClientResMgr.h"


//// Singleton Instance ///////////////////////////////////////////////////////

plClientResMgr& plClientResMgr::Instance(void)
{
    static plClientResMgr theInstance;
    return theInstance;
}

plClientResMgr::plClientResMgr()
{
    this->ClientResources = new std::map<std::string, plMipmap*>;
}

plClientResMgr::~plClientResMgr()
{
    if (this->ClientResources) {
        std::map<std::string, plMipmap*>::iterator it;

        for (it = this->ClientResources->begin(); it != this->ClientResources->end(); ++it) {
            if (it->second)
                it->second->UnRef();
        }

        delete this->ClientResources;
    }
}

void plClientResMgr::ILoadResources(const char* resfile)
{
    if (!resfile) {
        return;
    }

    wchar_t* wFilename = hsStringToWString(resfile);
    hsUNIXStream in;

    if (in.Open(wFilename, L"rb")) {
        uint32_t header = in.ReadLE32();
        uint32_t version = in.ReadLE32();
        uint32_t num_resources = 0;

        switch (version) {
            case 1:
                num_resources = in.ReadLE32();

                for (int i = 0; i < num_resources; i++) {
                    plMipmap* res_data = NULL;
                    uint32_t res_size = 0;
                    char* tmp_name = in.ReadSafeStringLong();
                    std::string res_name = std::string(tmp_name);
                    std::string res_type = res_name.substr(res_name.length() - 4, 4);
                    delete tmp_name;

                    // Version 1 doesn't encode format, so we'll try some simple
                    // extension sniffing
                    if (res_type == ".png") {
                        // Read resource stream size, but the PNG has that info in the header
                        // so it's not needed
                        res_size = in.ReadLE32();
                        res_data = plPNG::Instance().ReadFromStream(&in);
                    } else if (res_type == ".jpg") {
                        // Don't read resource stream size, as plJPEG's reader will need it
                        res_data = plJPEG::Instance().ReadFromStream(&in);
                    } else {
                        // Original Myst5 format only is known to support Targa,
                        // so default fallback is targa
                        // TODO - Add plTarga::ReadFromStream()
                        // for now, just skip the unknown resource and put NULL into the map
                        res_size = in.ReadLE32();
                        in.Skip(res_size);
                    }

                    (*this->ClientResources)[res_name] = res_data;
                }

                break;
            default:
                break;
        }

        in.Close();
    }

    delete wFilename;
}

plMipmap* plClientResMgr::getResource(const char* resname)
{
    plMipmap* resmipmap = NULL;
    std::map<std::string, plMipmap*>::iterator it = this->ClientResources->find(resname);

    if (it != this->ClientResources->end()) {
        resmipmap = it->second;
    } else {
        hsAssert(resmipmap, "Unknown client resource requested.");
    }

    return resmipmap;
}