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

/*==LICENSE==*

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

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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 "hsTypes.h"
#include "hsUtils.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 = TRACKED_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* wFilename = hsStringToWString(resfile);
	hsUNIXStream in;

	if (in.Open(wFilename, L"rb")) {
		UInt32 header = in.ReadSwap32();
		UInt32 version = in.ReadSwap32();
		UInt32 num_resources = 0;

		switch (version) {
			case 1:
				num_resources = in.ReadSwap32();

				for (int i = 0; i < num_resources; i++) {
					plMipmap* res_data = NULL;
					UInt32 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.ReadSwap32();
						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.ReadSwap32();
						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;
}