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// -----------------------------------------------------------------------------
// This file is part of Broken Sword 2.5
// Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsd�rfer
//
// Broken Sword 2.5 is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Broken Sword 2.5 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Broken Sword 2.5; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
// -----------------------------------------------------------------------------
#include "sword25/gfx/image/imageloader.h"
#include "sword25/gfx/image/imageloader_ids.h"
#define BS_LOG_PREFIX "IMAGELOADER"
// Statische Elemente der Klasse BS_ImageLoader intialisieren.
std::list<BS_ImageLoader*> BS_ImageLoader::_ImageLoaderList;
bool BS_ImageLoader::_ImageLoaderListInitialized = false;
// Lade Methode
// ------------
bool BS_ImageLoader::LoadImage(const char* pFileData, unsigned int FileSize,
BS_GraphicEngine::COLOR_FORMATS ColorFormat,
char*& pUncompressedData,
int& Width, int& Height,
int& Pitch)
{
// Falls die Liste der BS_ImageLoader noch nicht initialisiert wurde, wird dies getan.
if (!_ImageLoaderListInitialized)
_InitializeLoaderList();
// Passenden BS_ImageLoader finden und Bild dekodieren
BS_ImageLoader* pLoader = _FindSuitableImageLoader(pFileData, FileSize);
if (pLoader)
{
return pLoader->DecodeImage(pFileData, FileSize,
ColorFormat,
pUncompressedData,
Width, Height,
Pitch);
}
return false;
}
// Info Methode
// ------------
bool BS_ImageLoader::ExtractImageProperties(const char* pFileData, unsigned int FileSize,
BS_GraphicEngine::COLOR_FORMATS& ColorFormat,
int& Width, int& Height)
{
// Falls die Liste der BS_ImageLoader noch nicht initialisiert wurde, wird dies getan.
if (!_ImageLoaderListInitialized)
_InitializeLoaderList();
// Passenden BS_ImageLoader finden und Bildeigenschaften auslesen.
BS_ImageLoader* pLoader = _FindSuitableImageLoader(pFileData, FileSize);
if (pLoader)
{
return pLoader->ImageProperties(pFileData, FileSize,
ColorFormat,
Width, Height);
}
return false;
}
// Verwaltungs Methoden
// --------------------
void BS_ImageLoader::_InitializeLoaderList()
{
// Von jedem BS_ImageLoader wird eine Instanz erzeugt, diese f�gen sich selbst�ndig in die BS_ImageLoader-Liste ein.
for (int i = 0; i < BS_IMAGELOADER_COUNT; i++)
BS_IMAGELOADER_IDS[i]();
// Die Liste als gef�llt markieren.
_ImageLoaderListInitialized = true;
// Sicherstellen, dass beim Beenden alle BS_ImageLoader Instanzen zerst�rt werden.
atexit(BS_ImageLoader::_DeinitializeLoaderList);
}
void BS_ImageLoader::_DeinitializeLoaderList()
{
while (!_ImageLoaderList.empty())
{
delete _ImageLoaderList.back();
_ImageLoaderList.pop_back();
}
}
BS_ImageLoader* BS_ImageLoader::_FindSuitableImageLoader(const char* pFileData, unsigned int FileSize)
{
// Alle BS_ImageLoader-Objekte durchgehen, bis eins gefunden wurde, dass das Bild laden kann
std::list<BS_ImageLoader*>::iterator Iter = _ImageLoaderList.begin();
for (; Iter != _ImageLoaderList.end(); ++Iter)
{
// Falls ein geeigneter BS-ImageLoader gefunden wurde, wird er zur�ckgegeben.
if ((*Iter)->IsCorrectImageFormat(pFileData, FileSize))
{
return (*Iter);
}
}
// Es konnte kein passender BS_ImageLoader gefunden werden.
BS_LOG_ERRORLN("Could not find suitable image loader for image data.");
return NULL;
}
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