C++ CBaseTexture::LoadFromFile方法代码示例

void CBackgroundPicLoader::Process()
{
  unsigned int totalTime = 0;
  unsigned int count = 0;
  while (!m_bStop)
  { // loop around forever, waiting for the app to call LoadPic
    if (AbortableWait(m_loadPic,10) == WAIT_SIGNALED)
    {
      if (m_pCallback)
      {
        unsigned int start = XbmcThreads::SystemClockMillis();
        CBaseTexture* texture = new CTexture();
        unsigned int originalWidth = 0;
        unsigned int originalHeight = 0;
        texture->LoadFromFile(m_strFileName, m_maxWidth, m_maxHeight, g_guiSettings.GetBool("pictures.useexifrotation"), &originalWidth, &originalHeight);
        totalTime += XbmcThreads::SystemClockMillis() - start;
        count++;
        // tell our parent
        bool bFullSize = ((int)texture->GetWidth() < m_maxWidth) && ((int)texture->GetHeight() < m_maxHeight);
        if (!bFullSize)
        {
          int iSize = texture->GetWidth() * texture->GetHeight() - MAX_PICTURE_SIZE;
          if ((iSize + (int)texture->GetWidth() > 0) || (iSize + (int)texture->GetHeight() > 0))
            bFullSize = true;
          if (!bFullSize && texture->GetWidth() == g_Windowing.GetMaxTextureSize())
            bFullSize = true;
          if (!bFullSize && texture->GetHeight() == g_Windowing.GetMaxTextureSize())
            bFullSize = true;
        }
        m_pCallback->OnLoadPic(m_iPic, m_iSlideNumber, texture, originalWidth, originalHeight, bFullSize);
        m_isLoading = false;
      }
    }
  }
  if (count > 0)
    CLog::Log(LOGDEBUG, "Time for loading %u images: %u ms, average %u ms",
              count, totalTime, totalTime / count);
}

//.........这里部分代码省略.........
      {
        CLog::Log(LOGERROR, "Texture manager unable to load bundled file: %s", strTextureName.c_str());
        return 0;
      }

      pMap = new CTextureMap(strTextureName, width, height, nLoops);
      for (int iImage = 0; iImage < nImages; ++iImage)
      {
        pMap->Add(pTextures[iImage], Delay[iImage]);
      }

      delete [] pTextures;
      delete [] Delay;
    }
    else
    {
      CAnimatedGifSet AnimatedGifSet;
      int iImages = AnimatedGifSet.LoadGIF(strPath.c_str());
      if (iImages == 0)
      {
        CStdString rootPath = strPath.Left(g_SkinInfo->Path().GetLength());
        if (0 == rootPath.CompareNoCase(g_SkinInfo->Path()))
          CLog::Log(LOGERROR, "Texture manager unable to load file: %s", strPath.c_str());
        return 0;
      }
      int iWidth = AnimatedGifSet.FrameWidth;
      int iHeight = AnimatedGifSet.FrameHeight;

      // fixup our palette
      COLOR *palette = AnimatedGifSet.m_vecimg[0]->Palette;
      // set the alpha values to fully opaque
      for (int i = 0; i < 256; i++)
        palette[i].x = 0xff;
      // and set the transparent colour
      if (AnimatedGifSet.m_vecimg[0]->Transparency && AnimatedGifSet.m_vecimg[0]->Transparent >= 0)
        palette[AnimatedGifSet.m_vecimg[0]->Transparent].x = 0;

      pMap = new CTextureMap(strTextureName, iWidth, iHeight, AnimatedGifSet.nLoops);

      for (int iImage = 0; iImage < iImages; iImage++)
      {
        CTexture *glTexture = new CTexture();
        if (glTexture)
        {
          CAnimatedGif* pImage = AnimatedGifSet.m_vecimg[iImage];
          glTexture->LoadPaletted(pImage->Width, pImage->Height, pImage->BytesPerRow, XB_FMT_A8R8G8B8, (unsigned char *)pImage->Raster, palette);
          pMap->Add(glTexture, pImage->Delay);
        }
      } // of for (int iImage=0; iImage < iImages; iImage++)
    }

#ifdef _DEBUG
    int64_t end, freq;
    end = CurrentHostCounter();
    freq = CurrentHostFrequency();
    char temp[200];
    sprintf(temp, "Load %s: %.1fms%s\n", strPath.c_str(), 1000.f * (end - start) / freq, (bundle >= 0) ? " (bundled)" : "");
    OutputDebugString(temp);
#endif

    m_vecTextures.push_back(pMap);
    return 1;
  } // of if (strPath.Right(4).ToLower()==".gif")

  CBaseTexture *pTexture = NULL;
  int width = 0, height = 0;
  if (bundle >= 0)
  {
    if (FAILED(m_TexBundle[bundle].LoadTexture(strTextureName, &pTexture, width, height)))
    {
      CLog::Log(LOGERROR, "Texture manager unable to load bundled file: %s", strTextureName.c_str());
      return 0;
    }
  }
  else
  {
    pTexture = new CTexture();
    if(!pTexture->LoadFromFile(strPath))
      return 0;
    width = pTexture->GetWidth();
    height = pTexture->GetHeight();
  }

  if (!pTexture) return 0;

  CTextureMap* pMap = new CTextureMap(strTextureName, width, height, 0);
  pMap->Add(pTexture, 100);
  m_vecTextures.push_back(pMap);

#ifdef _DEBUG_TEXTURES
  int64_t end, freq;
  end = CurrentHostCounter();
  freq = CurrentHostFrequency();
  char temp[200];
  sprintf(temp, "Load %s: %.1fms%s\n", strPath.c_str(), 1000.f * (end - start) / freq, (bundle >= 0) ? " (bundled)" : "");
  OutputDebugString(temp);
#endif

  return 1;
}