text: /*
   * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Library General Public
   * License as published by the Free Software Foundation; either
   * version 2 of the License, or (at your option) any later version.
   *
   * This library 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
   * Library General Public License for more details.
   *
   * You should have received a copy of the GNU Library General Public License
   * along with this library; see the file COPYING.LIB.  If not, write to
   * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   * Boston, MA 02110-1301, USA.
   */
  
  #include "config.h"
  #include "ImageDecoder.h"
  
  #include "IntRect.h"
  #include "IntSize.h"
  #include "SurfaceOpenVG.h"
  #include "TiledImageOpenVG.h"
  #include "VGUtils.h"
  
  #if PLATFORM(EGL)
  #include "EGLDisplayOpenVG.h"
  #endif
  
  #include <openvg.h>
  
  namespace WebCore {
  
  NativeImagePtr ImageFrame::asNewNativeImage() const
  {
      static const VGImageFormat bufferFormat = VG_sARGB_8888_PRE;
      // Save memory by using 16-bit images for fully opaque images.
      const VGImageFormat imageFormat = hasAlpha() ? bufferFormat : VG_sRGB_565;
  
  #if PLATFORM(EGL)
      EGLDisplayOpenVG::current()->sharedPlatformSurface()->makeCurrent();
  #endif
  
      const IntSize vgMaxImageSize(vgGeti(VG_MAX_IMAGE_WIDTH), vgGeti(VG_MAX_IMAGE_HEIGHT));
      ASSERT_VG_NO_ERROR();
  
      TiledImageOpenVG* tiledImage = new TiledImageOpenVG(IntSize(width(), height()), vgMaxImageSize);
  
      const int numColumns = tiledImage->numColumns();
      const int numRows = tiledImage->numRows();
  
      for (int yIndex = 0; yIndex < numRows; ++yIndex) {
          for (int xIndex = 0; xIndex < numColumns; ++xIndex) {
              IntRect tileRect = tiledImage->tileRect(xIndex, yIndex);
              VGImage image = vgCreateImage(imageFormat,
                  tileRect.width(), tileRect.height(), VG_IMAGE_QUALITY_FASTER);
              ASSERT_VG_NO_ERROR();
  
              PixelData* pixelData = const_cast<PixelData*>(m_bytes);
              pixelData += (tileRect.y() * width()) + tileRect.x();
  
              vgImageSubData(image, reinterpret_cast<unsigned char*>(pixelData),
                  width() * sizeof(PixelData), bufferFormat,
                  0, 0, tileRect.width(), tileRect.height());
              ASSERT_VG_NO_ERROR();
  
              tiledImage->setTile(xIndex, yIndex, image);
          }
      }
  
      return tiledImage;
  }
  
  }
  