--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OrthancFramework/Sources/DicomFormat/DicomImageInformation.cpp	Wed Jun 10 20:30:34 2020 +0200
@@ -0,0 +1,310 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 Osimis S.A., 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 "../Compatibility.h"
+#include "../OrthancException.h"
+#include "../Toolbox.h"
+#include <boost/lexical_cast.hpp>
+#include <limits>
+#include <cassert>
+#include <stdio.h>
+#include <memory>
+
+namespace Orthanc
+{
+  DicomImageInformation::DicomImageInformation(const DicomMap& values)
+  {
+    unsigned int pixelRepresentation;
+    unsigned int planarConfiguration = 0;
+
+    try
+    {
+      std::string p = values.GetValue(DICOM_TAG_PHOTOMETRIC_INTERPRETATION).GetContent();
+      Toolbox::ToUpperCase(p);
+
+      if (p == "RGB")
+      {
+        photometric_ = PhotometricInterpretation_RGB;
+      }
+      else if (p == "MONOCHROME1")
+      {
+        photometric_ = PhotometricInterpretation_Monochrome1;
+      }
+      else if (p == "MONOCHROME2")
+      {
+        photometric_ = PhotometricInterpretation_Monochrome2;
+      }
+      else if (p == "PALETTE COLOR")
+      {
+        photometric_ = PhotometricInterpretation_Palette;
+      }
+      else if (p == "HSV")
+      {
+        photometric_ = PhotometricInterpretation_HSV;
+      }
+      else if (p == "ARGB")
+      {
+        photometric_ = PhotometricInterpretation_ARGB;
+      }
+      else if (p == "CMYK")
+      {
+        photometric_ = PhotometricInterpretation_CMYK;
+      }
+      else if (p == "YBR_FULL")
+      {
+        photometric_ = PhotometricInterpretation_YBRFull;
+      }
+      else if (p == "YBR_FULL_422")
+      {
+        photometric_ = PhotometricInterpretation_YBRFull422;
+      }
+      else if (p == "YBR_PARTIAL_420")
+      {
+        photometric_ = PhotometricInterpretation_YBRPartial420;
+      }
+      else if (p == "YBR_PARTIAL_422")
+      {
+        photometric_ = PhotometricInterpretation_YBRPartial422;
+      }
+      else if (p == "YBR_ICT")
+      {
+        photometric_ = PhotometricInterpretation_YBR_ICT;
+      }
+      else if (p == "YBR_RCT")
+      {
+        photometric_ = PhotometricInterpretation_YBR_RCT;
+      }
+      else
+      {
+        photometric_ = PhotometricInterpretation_Unknown;
+      }
+
+      values.GetValue(DICOM_TAG_COLUMNS).ParseFirstUnsignedInteger(width_); // in some US images, we've seen tag values of "800\0"; that's why we parse the 'first' value
+      values.GetValue(DICOM_TAG_ROWS).ParseFirstUnsignedInteger(height_);
+
+      bitsAllocated_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_BITS_ALLOCATED).GetContent());
+
+      try
+      {
+        samplesPerPixel_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_SAMPLES_PER_PIXEL).GetContent());
+      }
+      catch (OrthancException&)
+      {
+        samplesPerPixel_ = 1;  // Assume 1 color channel
+      }
+
+      try
+      {
+        bitsStored_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_BITS_STORED).GetContent());
+      }
+      catch (OrthancException&)
+      {
+        bitsStored_ = bitsAllocated_;
+      }
+
+      try
+      {
+        highBit_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_HIGH_BIT).GetContent());
+      }
+      catch (OrthancException&)
+      {
+        highBit_ = bitsStored_ - 1;
+      }
+
+      try
+      {
+        pixelRepresentation = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_PIXEL_REPRESENTATION).GetContent());
+      }
+      catch (OrthancException&)
+      {
+        pixelRepresentation = 0;  // Assume unsigned pixels
+      }
+
+      if (samplesPerPixel_ > 1)
+      {
+        // The "Planar Configuration" is only set when "Samples per Pixels" is greater than 1
+        // http://dicom.nema.org/medical/dicom/current/output/html/part03.html#sect_C.7.6.3.1.3
+        try
+        {
+          planarConfiguration = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_PLANAR_CONFIGURATION).GetContent());
+        }
+        catch (OrthancException&)
+        {
+          planarConfiguration = 0;  // Assume interleaved color channels
+        }
+      }
+    }
+    catch (boost::bad_lexical_cast&)
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+    catch (OrthancException&)
+    {
+      throw OrthancException(ErrorCode_NotImplemented);
+    }
+
+    if (values.HasTag(DICOM_TAG_NUMBER_OF_FRAMES))
+    {
+      try
+      {
+        numberOfFrames_ = boost::lexical_cast<unsigned int>(values.GetValue(DICOM_TAG_NUMBER_OF_FRAMES).GetContent());
+      }
+      catch (boost::bad_lexical_cast&)
+      {
+        throw OrthancException(ErrorCode_NotImplemented);
+      }
+    }
+    else
+    {
+      numberOfFrames_ = 1;
+    }
+
+    if (bitsAllocated_ != 8 && bitsAllocated_ != 16 &&
+        bitsAllocated_ != 24 && bitsAllocated_ != 32)
+    {
+      throw OrthancException(ErrorCode_IncompatibleImageFormat, "Image not supported: " + boost::lexical_cast<std::string>(bitsAllocated_) + " bits allocated");
+    }
+    else if (numberOfFrames_ == 0)
+    {
+      throw OrthancException(ErrorCode_IncompatibleImageFormat, "Image not supported (no frames)");
+    }
+    else if (planarConfiguration != 0 && planarConfiguration != 1)
+    {
+      throw OrthancException(ErrorCode_IncompatibleImageFormat, "Image not supported: planar configuration is " + boost::lexical_cast<std::string>(planarConfiguration));
+    }
+
+    if (samplesPerPixel_ == 0)
+    {
+      throw OrthancException(ErrorCode_IncompatibleImageFormat, "Image not supported: samples per pixel is 0");
+    }
+
+    bytesPerValue_ = bitsAllocated_ / 8;
+
+    isPlanar_ = (planarConfiguration != 0 ? true : false);
+    isSigned_ = (pixelRepresentation != 0 ? true : false);
+  }
+
+  DicomImageInformation* DicomImageInformation::Clone() const
+  {
+    std::unique_ptr<DicomImageInformation> target(new DicomImageInformation);
+    target->width_ = width_;
+    target->height_ = height_;
+    target->samplesPerPixel_ = samplesPerPixel_;
+    target->numberOfFrames_ = numberOfFrames_;
+    target->isPlanar_ = isPlanar_;
+    target->isSigned_ = isSigned_;
+    target->bytesPerValue_ = bytesPerValue_;
+    target->bitsAllocated_ = bitsAllocated_;
+    target->bitsStored_ = bitsStored_;
+    target->highBit_ = highBit_;
+    target->photometric_ = photometric_;
+
+    return target.release();
+  }
+
+  bool DicomImageInformation::ExtractPixelFormat(PixelFormat& format,
+                                                 bool ignorePhotometricInterpretation) const
+  {
+    if (photometric_ == PhotometricInterpretation_Palette)
+    {
+      if (GetBitsStored() == 8 && GetChannelCount() == 1 && !IsSigned())
+      {
+        format = PixelFormat_RGB24;
+        return true;
+      }
+
+      if (GetBitsStored() == 16 && GetChannelCount() == 1 && !IsSigned())
+      {
+        format = PixelFormat_RGB48;
+        return true;
+      }
+    }
+    
+    if (ignorePhotometricInterpretation ||
+        photometric_ == PhotometricInterpretation_Monochrome1 ||
+        photometric_ == PhotometricInterpretation_Monochrome2)
+    {
+      if (GetBitsStored() == 8 && GetChannelCount() == 1 && !IsSigned())
+      {
+        format = PixelFormat_Grayscale8;
+        return true;
+      }
+      
+      if (GetBitsAllocated() == 16 && GetChannelCount() == 1 && !IsSigned())
+      {
+        format = PixelFormat_Grayscale16;
+        return true;
+      }
+
+      if (GetBitsAllocated() == 16 && GetChannelCount() == 1 && IsSigned())
+      {
+        format = PixelFormat_SignedGrayscale16;
+        return true;
+      }
+      
+      if (GetBitsAllocated() == 32 && GetChannelCount() == 1 && !IsSigned())
+      {
+        format = PixelFormat_Grayscale32;
+        return true;
+      }
+    }
+
+    if (GetBitsStored() == 8 &&
+        GetChannelCount() == 3 &&
+        !IsSigned() &&
+        (ignorePhotometricInterpretation || photometric_ == PhotometricInterpretation_RGB))
+    {
+      format = PixelFormat_RGB24;
+      return true;
+    }
+
+    return false;
+  }
+
+
+  size_t DicomImageInformation::GetFrameSize() const
+  {
+    return (GetHeight() *
+            GetWidth() *
+            GetBytesPerValue() *
+            GetChannelCount());
+  }
+}