Added constructor for standalone execution

include/ossim/util/ossimRemapTool.h

@@ -15,12 +15,27 @@
 #include <ossim/imaging/ossimSingleImageChain.h>
 
 /*!
- *  Class for Performing histo ans scalar-based remapping.
+ *  ossimTool class for performing histo ans scalar-based remapping.
  */
 class OSSIMDLLEXPORT ossimRemapTool : public ossimChipProcTool
 {
 public:
    ossimRemapTool();
+
+   /** This constructor packages up all the remap functionality into one "call". There is no need to
+    * call execute() if this constructor is invoked. The remapped file will be accompanied by an
+    * OSSIM geom file that echoes the original input image geometry.
+    * @param inputFile  The image file to be remapped.
+    * @param entry_index  For multi-entry input files, specifies the entry to be remapped
+    * @param skipHistoStretch  Set to true to bypass histogram stretch
+    * @param outputFile  If left blank, the output will be "<inputFile>-remap.<ext>"
+    * @throws ossimException on error. Use ossimException::what() to get error description.
+    */
+   ossimRemapTool(const ossimFilename& inputFile,
+                  int entryIndex=0,
+                  bool doHistoStretch=true,
+                  ossimFilename outputFile="");
+
    ~ossimRemapTool();
 
    virtual bool initialize(ossimArgumentParser& ap);

src/util/ossimRemapTool.cpp

@@ -3,6 +3,8 @@
 //     OSSIM Open Source Geospatial Data Processing Library
 //     See top level LICENSE.txt file for license information
 //
+//     Author: [email protected]
+//
 //**************************************************************************************************
 
 #include <ossim/util/ossimRemapTool.h>
@@ -34,6 +36,23 @@ ossimRemapTool::ossimRemapTool()
    theStdOutProgress.setFlushStreamFlag(true);
 }
 
+ossimRemapTool::ossimRemapTool(const ossimFilename& inputFile,
+                               int entryIndex,
+                               bool doHistoStretch,
+                               ossimFilename outputFile)
+   :  m_inputFilename (inputFile),
+      m_entry (entryIndex),
+      m_doHistoStretch(doHistoStretch)
+{
+   m_productFilename = outputFile;
+   theStdOutProgress.setFlushStreamFlag(true);
+
+   initProcessingChain();
+
+   if (!execute())
+      throw ossimException("Error encountered writing remap image.");
+}
+
 ossimRemapTool::~ossimRemapTool()
 {
 }
@@ -90,12 +109,6 @@ bool ossimRemapTool::initialize(ossimArgumentParser& ap)
       m_productFilename = ap[2];
       cout<<m_inputFilename<<endl;
    }
-   if (m_productFilename.empty())
-   {
-      m_productFilename = m_inputFilename.fileNoExtension() + "-remap";
-      m_productFilename.setExtension(m_inputFilename.ext());
-   }
-
    try
    {
       initProcessingChain();
@@ -168,6 +181,12 @@ void ossimRemapTool::initProcessingChain()
 
 bool ossimRemapTool::execute()
 {
+   if (m_productFilename.empty())
+   {
+      m_productFilename = m_inputFilename.fileNoExtension() + "-remap";
+      m_productFilename.setExtension(m_inputFilename.ext());
+   }
+
    m_geom->getBoundingRect(m_aoiViewRect);
 
    // Parent class has service to create writer:

test/src/util/CMakeLists.txt

@@ -4,4 +4,5 @@ OSSIM_SETUP_APPLICATION(ossim-chipper-test INSTALL COMMAND_LINE COMPONENT_NAME o
 OSSIM_SETUP_APPLICATION(ossim-info-test INSTALL COMMAND_LINE COMPONENT_NAME ossim SOURCE_FILES ossim-info-test.cpp)
 OSSIM_SETUP_APPLICATION(ossim-viewshed-test INSTALL COMMAND_LINE COMPONENT_NAME ossim SOURCE_FILES ossim-viewshed-test.cpp)
 OSSIM_SETUP_APPLICATION(ossim-tools-test INSTALL COMMAND_LINE COMPONENT_NAME ossim SOURCE_FILES ossim-tools-test.cpp)
+OSSIM_SETUP_APPLICATION(ossim-remap-tool-test INSTALL COMMAND_LINE COMPONENT_NAME ossim SOURCE_FILES ossim-remap-tool-test.cpp)
 

test/src/util/ossim-remap-tool-test.cpp

@@ -0,0 +1,93 @@
+//**************************************************************************************************
+//
+//     OSSIM Open Source Geospatial Data Processing Library
+//     See top level LICENSE.txt file for license information
+//
+//     Author: [email protected]
+//
+//**************************************************************************************************
+
+#include <ossim/base/ossimArgumentParser.h>
+#include <ossim/base/ossimException.h>
+#include <ossim/base/ossimFilename.h>
+#include <ossim/util/ossimRemapTool.h>
+#include <ossim/base/ossimNotify.h>
+#include <ossim/base/ossimRefPtr.h>
+#include <ossim/init/ossimInit.h>
+#include <getopt.h>
+#include <iostream>
+#include <memory>
+
+void usage(char* argv0, int exitCode, std::string errMsg="")
+{
+   if (!errMsg.empty())
+      std::cout<<"\n"<<errMsg<<std::endl;
+   std::cout<<
+      "\nPerforms remap to 8-bit including optional histogram stretch and saves the corresponding"
+      "\nexternal geometry file. If output filename is omitted, the output will be <input-image>-remap.ext"
+      "\n"
+      "\nUsage: "<<argv0<<" [options] <input-image.ext> [<output-image>] "
+      "\n"
+      "\nOptions:"
+      "\n  -e <N>    Entry index for multi-entry input files."
+      "\n  -h        Dump this help."
+      "\n  -n        Skip histogram stretch."
+      "\n"<<std::endl;
+   exit(exitCode);
+}
+
+
+int main(int argc, char *argv[])
+{
+   ossimArgumentParser ap(&argc, argv);
+   ossimInit::instance()->initialize(ap);
+   ostringstream msg;
+   int entryIndex=0, c=0;
+   bool doHistoStretch=true;
+
+   // USAGE:
+   // Parse command line:
+   while ((c = getopt(argc, argv, "e:hn")) != -1)
+   {
+      switch (c)
+      {
+      case 'e':
+          entryIndex = atoi(optarg);
+         break;
+      case 'h':
+         usage(argv[0], 0);
+         break;
+      case 'n':
+         doHistoStretch = false;
+         break;
+      case '?':
+         msg << "Unknown option '" << (char) optopt << "' specified.";
+         usage(argv[0], 1, msg.str());
+         break;
+      default:
+         abort();
+      }
+   }
+
+   int numArgs = argc - optind;
+   if (numArgs < 1)
+      usage(argv[0], 1, "Input filename required.");
+
+   ossimFilename inputFilename (argv[optind++]);
+   ossimFilename outputFilename;
+   if (numArgs > 1)
+      outputFilename = argv[optind];
+
+   try
+   {
+      // Constructor does everything or throws exception:
+      ossimRemapTool ort (inputFilename, entryIndex, doHistoStretch, outputFilename);
+   }
+   catch (const ossimException& e)
+   {
+      std::cerr << e.what() << std::endl;
+      return 1;
+   }
+
+   return 0;
+}