--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Core/DicomFormat/DicomImageInformation.cpp	Wed Jun 25 11:56:48 2014 +0200
@@ -0,0 +1,188 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
+ * Belgium
+ *
+ * This program 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 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "../PrecompiledHeaders.h"
+
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+
+#include "DicomImageInformation.h"
+
+#include "../OrthancException.h"
+#include <boost/lexical_cast.hpp>
+#include <limits>
+#include <cassert>
+#include <stdio.h>
+
+namespace Orthanc
+{
+  DicomImageInformation::DicomImageInformation(const DicomMap& values)
+  {
+    unsigned int pixelRepresentation;
+    unsigned int planarConfiguration = 0;
+
+    try
+    {
+      width_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_COLUMNS).AsString());
+      height_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_ROWS).AsString());
+      bitsAllocated_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_BITS_ALLOCATED).AsString());
+
+      try
+      {
+        samplesPerPixel_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_SAMPLES_PER_PIXEL).AsString());
+      }
+      catch (OrthancException&)
+      {
+        samplesPerPixel_ = 1;  // Assume 1 color channel
+      }
+
+      try
+      {
+        bitsStored_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_BITS_STORED).AsString());
+      }
+      catch (OrthancException&)
+      {
+        bitsStored_ = bitsAllocated_;
+      }
+
+      try
+      {
+        highBit_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_HIGH_BIT).AsString());
+      }
+      catch (OrthancException&)
+      {
+        highBit_ = bitsStored_ - 1;
+      }
+
+      try
+      {
+        pixelRepresentation = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_PIXEL_REPRESENTATION).AsString());
+      }
+      catch (OrthancException&)
+      {
+        pixelRepresentation = 0;  // Assume unsigned pixels
+      }
+
+      if (samplesPerPixel_ > 1)
+      {
+        // The "Planar Configuration" is only set when "Samples per Pixels" is greater than 1
+        // https://www.dabsoft.ch/dicom/3/C.7.6.3.1.3/
+        try
+        {
+          planarConfiguration = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_PLANAR_CONFIGURATION).AsString());
+        }
+        catch (OrthancException&)
+        {
+          planarConfiguration = 0;  // Assume interleaved color channels
+        }
+      }
+    }
+    catch (boost::bad_lexical_cast&)
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+    catch (OrthancException&)
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+
+    try
+    {
+      numberOfFrames_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_NUMBER_OF_FRAMES).AsString());
+    }
+    catch (OrthancException)
+    {
+      // If the tag "NumberOfFrames" is absent, assume there is a single frame
+      numberOfFrames_ = 1;
+    }
+    catch (boost::bad_lexical_cast&)
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+
+    if ((bitsAllocated_ != 8 && bitsAllocated_ != 16 && 
+         bitsAllocated_ != 24 && bitsAllocated_ != 32) ||
+        numberOfFrames_ == 0 ||
+        (planarConfiguration != 0 && planarConfiguration != 1))
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+
+    if (bitsAllocated_ > 32 ||
+        bitsStored_ >= 32)
+    {
+      // Not available, as the accessor internally uses int32_t values
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+
+    if (samplesPerPixel_ == 0)
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+
+    bytesPerValue_ = bitsAllocated_ / 8;
+
+    isPlanar_ = (planarConfiguration != 0 ? true : false);
+    isSigned_ = (pixelRepresentation != 0 ? true : false);
+  }
+
+
+  bool DicomImageInformation::ExtractPixelFormat(PixelFormat& format) const
+  {
+    if (GetBitsStored() == 8 && GetChannelCount() == 1 && !IsSigned())
+    {
+      format = PixelFormat_Grayscale8;
+      return true;
+    }
+
+    if (GetBitsStored() == 8 && GetChannelCount() == 3 && !IsSigned())
+    {
+      format = PixelFormat_RGB24;
+      return true;
+    }
+
+    if (GetBitsAllocated() == 16 && GetChannelCount() == 1 && !IsSigned())
+    {
+      format = PixelFormat_Grayscale16;
+      return true;
+    }
+
+    if (GetBitsAllocated() == 16 && GetChannelCount() == 1 && IsSigned())
+    {
+      format = PixelFormat_SignedGrayscale16;
+      return true;
+    }
+
+    return false;
+  }
+}