ENH: Huge commit to remove the previous implementation for jpeg/fragments/multiframes...

[gdcm.git] / src / gdcmJPEGFragmentsInfo.cxx

diff --git a/src/gdcmJPEGFragmentsInfo.cxx b/src/gdcmJPEGFragmentsInfo.cxx
index ae87b8de6ff7d117a41f89ec3313430573b8190b..489ab2fe1a82c33f81c301089ced9d73dc45a800 100644 (file)
--- a/src/gdcmJPEGFragmentsInfo.cxx
+++ b/src/gdcmJPEGFragmentsInfo.cxx
@@ -3,8 +3,8 @@
   Program:   gdcm
   Module:    $RCSfile: gdcmJPEGFragmentsInfo.cxx,v $
   Language:  C++
-  Date:      $Date: 2005/01/17 01:14:33 $
-  Version:   $Revision: 1.6 $
+  Date:      $Date: 2005/01/31 03:22:25 $
+  Version:   $Revision: 1.14 $
                                                                                 
   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
   l'Image). All rights reserved. See Doc/License.txt or
@@ -17,10 +17,18 @@
 =========================================================================*/
 
 #include "gdcmJPEGFragmentsInfo.h"
+#include "gdcmDebug.h"
+
+#include <fstream>
 
 namespace gdcm 
 {
 
+JPEGFragmentsInfo::JPEGFragmentsInfo()
+{
+   StateSuspension = 0;
+}
+
 /**
  * \brief Default destructor
  */
@@ -37,14 +45,15 @@ JPEGFragmentsInfo::~JPEGFragmentsInfo()
 
 /**
  * \brief        Print self.
- * @param indent Indentation string to be prepended during printing.
  * @param os     Stream to print to.
+ * @param indent Indentation string to be prepended during printing.
  */
-void JPEGFragmentsInfo::Print( std::ostream &os, std::string const & indent )
+void JPEGFragmentsInfo::Print( std::ostream &os, std::string const &indent )
 {
+   os << std::endl;
    os << indent
       << "----------------- JPEG fragments --------------------------------"
-      << std::endl;
+      << std::endl << std::endl;
    os << indent
       << "Total number of fragments : " << Fragments.size()
       << std::endl;
@@ -56,8 +65,99 @@ void JPEGFragmentsInfo::Print( std::ostream &os, std::string const & indent )
       os << indent
          << "   fragment number :" << fragmentNumber++;
       (*it)->Print( os, indent + "   ");
-      os << std::endl;
    }
+   os << std::endl;
+}
+
+/**
+ * \brief  Calculate sum of all fragments length and return total
+ * @return Total size of JPEG fragments length
+ */
+size_t JPEGFragmentsInfo::GetFragmentsLength()
+{
+   // Loop on the fragment[s] to get total length
+   size_t totalLength = 0;
+   JPEGFragmentsList::const_iterator it;
+   for( it  = Fragments.begin();
+        it != Fragments.end();
+        ++it )
+   {
+      totalLength += (*it)->GetLength();
+   }
+   return totalLength;
+}
+
+/**
+ * \brief Read the all the JPEG Fragment into the input buffer
+ */
+void JPEGFragmentsInfo::ReadAllFragments(std::ifstream *fp, JOCTET *buffer )
+{
+   JOCTET *p = buffer;
+
+   // Loop on the fragment[s]
+   JPEGFragmentsList::const_iterator it;
+   for( it  = Fragments.begin();
+        it != Fragments.end();
+        ++it )
+   {
+      fp->seekg( (*it)->GetOffset(), std::ios::beg);
+      size_t len = (*it)->GetLength();
+      fp->read((char *)p,len);
+      p += len;
+   }
+
+}
+
+// to avoid warnings
+void JPEGFragmentsInfo::DecompressJPEGFramesFromFile(std::ifstream *fp, uint8_t *buffer, int nBits, int , int )
+{
+   // Pointer to the Raw image
+   uint8_t *localRaw = buffer;
+
+  // Loop on the fragment[s]
+   JPEGFragmentsList::const_iterator it;
+   for( it  = Fragments.begin();
+        it != Fragments.end();
+        ++it )
+   {
+     //(*it)->pimage = localRaw;
+     (*it)->DecompressJPEGFramesFromFile(fp, localRaw, nBits, StateSuspension);
+     // update pointer to image after some scanlines read:
+     localRaw = (*it)->GetImage();
+      // Advance to next free location in Raw 
+      // for next fragment decompression (if any)
+
+      //localRaw += length * numBytes;
+     //std::cerr << "Used to increment by: " << length * numBytes << std::endl;
+   }
+}
+
+void JPEGFragmentsInfo::AddFragment(JPEGFragment *fragment)
+{
+   Fragments.push_back(fragment);
+}
+
+JPEGFragment *JPEGFragmentsInfo::GetFirstFragment()
+{
+   ItFragments = Fragments.begin();
+   if (ItFragments != Fragments.end())
+      return  *ItFragments;
+   return NULL;
+}
+
+JPEGFragment *JPEGFragmentsInfo::GetNextFragment()
+{
+   gdcmAssertMacro (ItFragments != Fragments.end());
+
+   ++ItFragments;
+   if (ItFragments != Fragments.end())
+      return  *ItFragments;
+   return NULL;
+}
+
+unsigned int JPEGFragmentsInfo::GetFragmentCount()
+{
+   return Fragments.size();
 }
 
 } // end namespace gdcm