--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Outputs/PyramidWriterBase.cpp	Sat Oct 22 21:48:33 2016 +0200
@@ -0,0 +1,150 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program 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
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "PyramidWriterBase.h"
+
+#include "../ImageToolbox.h"
+#include "../Orthanc/Core/OrthancException.h"
+#include "../Orthanc/Core/Logging.h"
+
+namespace OrthancWSI
+{
+  PyramidWriterBase::Level PyramidWriterBase::GetLevel(unsigned int level) const
+  {
+    boost::mutex::scoped_lock lock(const_cast<PyramidWriterBase&>(*this).mutex_);
+
+    if (level >= levels_.size())
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+    else
+    {
+      return levels_[level];
+    }
+  }
+
+
+  PyramidWriterBase::PyramidWriterBase(Orthanc::PixelFormat pixelFormat,
+                                       ImageCompression compression,
+                                       unsigned int tileWidth,
+                                       unsigned int tileHeight) :
+    pixelFormat_(pixelFormat),
+    compression_(compression),
+    tileWidth_(tileWidth),
+    tileHeight_(tileHeight),
+    jpegQuality_(90),   // Default JPEG quality
+    first_(true)
+  {
+  }
+
+
+  void PyramidWriterBase::SetJpegQuality(int quality)
+  {
+    if (quality <= 0 || quality > 100)
+    {
+      LOG(ERROR) << "The JPEG quality must be in range [1;100], but " << quality << " is provided";
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+
+    jpegQuality_ = quality;
+  }
+
+
+  void PyramidWriterBase::AddLevel(unsigned int width,
+                                   unsigned int height)
+  {
+    boost::mutex::scoped_lock lock(mutex_);
+      
+    if (!first_)
+    {
+      LOG(ERROR) << "Cannot add pyramid levels after some tile has already been written";
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
+    }
+
+    if (!levels_.empty())
+    {
+      const Level& previous = levels_[levels_.size() - 1];
+
+      if (width >= previous.width_ ||
+          height >= previous.height_ ||
+          width == 0 ||
+          height == 0)
+      {
+        LOG(ERROR) << "Levels must have strictly decreasing sizes";
+        throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls);
+      }
+    }
+
+    Level level;
+    level.z_ = levels_.size();
+    level.width_ = width;
+    level.height_ = height;
+    level.countTilesX_ = CeilingDivision(width, tileWidth_);
+    level.countTilesY_ = CeilingDivision(height, tileHeight_);
+    levels_.push_back(level);
+
+    AddLevelInternal(level);
+  }
+
+
+  unsigned int PyramidWriterBase::GetLevelCount() const
+  {
+    boost::mutex::scoped_lock lock(const_cast<PyramidWriterBase&>(*this).mutex_);
+    return levels_.size();
+  }
+
+
+  void PyramidWriterBase::WriteRawTile(const std::string& tile,
+                                       ImageCompression compression,
+                                       unsigned int z,
+                                       unsigned int x,
+                                       unsigned int y)
+  {
+    first_ = false;
+
+    const Level level = GetLevel(z);
+
+    if (compression != compression_)
+    {
+      std::string recoded;
+      ImageToolbox::ChangeTileCompression(recoded, tile, compression, compression_, jpegQuality_);
+      WriteRawTileInternal(recoded, level, x, y);
+    }
+    else
+    {
+      WriteRawTileInternal(tile, level, x, y);
+    }
+  }
+
+
+  void PyramidWriterBase::EncodeTile(const Orthanc::ImageAccessor& tile,
+                                     unsigned int z,
+                                     unsigned int x, 
+                                     unsigned int y)
+  {
+    first_ = false;
+
+    const Level level = GetLevel(z);
+
+    std::string raw;
+    ImageToolbox::EncodeTile(raw, tile, compression_, jpegQuality_);
+    WriteRawTileInternal(raw, level, x, y);
+  }
+}