text: /*
   * Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #include "texturemanager.h"
  #include "animatedtexture.h"
  #include "graphics.h"
  #include "image.h"
  
  #include <framework/core/resourcemanager.h>
  #include <framework/thirdparty/apngloader.h>
  
  TextureManager g_textures;
  
  void TextureManager::init()
  {
      m_emptyTexture = TexturePtr(new Texture);
  }
  
  void TextureManager::terminate()
  {
  #ifndef NDEBUG
      // check for leaks
      int refs = 0;
      for(const auto& it : m_textures)
          if(it.second.use_count() > 1)
              refs++;
      if(refs > 0)
          g_logger.debug(stdext::format("%d textures references left", refs));
  #endif
      m_textures.clear();
      m_emptyTexture = nullptr;
  }
  
  TexturePtr TextureManager::getTexture(const std::string& fileName)
  {
      TexturePtr texture;
  
      // before must resolve filename to full path
      std::string filePath = g_resources.resolvePath(fileName);
  
      // check if the texture is already loaded
      auto it = m_textures.find(filePath);
      if(it != m_textures.end()) {
          if(it->second.expired())
              m_textures.erase(it);
          else
              texture = it->second.lock();
      }
  
      // texture not found, load it
      if(!texture) {
          try {
              // currently only png textures are supported
              if(!boost::ends_with(filePath, ".png"))
                  stdext::throw_exception("texture file format no supported");
  
              // load texture file data
              std::stringstream fin;
              g_resources.loadFile(filePath, fin);
              texture = loadPNG(fin);
          } catch(stdext::exception& e) {
              g_logger.error(stdext::format("unable to load texture '%s': %s", fileName, e.what()));
              texture = g_textures.getEmptyTexture();
          }
  
          if(texture)
              m_textures[filePath] = texture;
      }
  
      return texture;
  }
  
  TexturePtr TextureManager::loadPNG(std::stringstream& file)
  {
      TexturePtr texture;
  
      apng_data apng;
      if(load_apng(file, &apng) == 0) {
          if(apng.num_frames > 1) { // animated texture
              //uchar *framesdata = apng.pdata + (apng.first_frame * apng.width * apng.height * apng.bpp);
              //texture = TexturePtr(new AnimatedTexture(apng.width, apng.height, apng.bpp, apng.num_frames, framesdata, (int*)apng.frames_delay));
              g_logger.error("animated textures is disabled for a while");
          } else {
              ImagePtr image = ImagePtr(new Image(Size(apng.width, apng.height), apng.bpp, apng.pdata));
              texture = TexturePtr(new Texture(image));
          }
          free_apng(&apng);
      }
  
      return texture;
  }
  