text: /*
   * Software License Agreement (BSD License)
   *
   *  Copyright (c) 2011, Willow Garage, Inc.
   *  All rights reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions
   *  are met:
   *
   *   * Redistributions of source code must retain the above copyright
   *     notice, this list of conditions and the following disclaimer.
   *   * Redistributions in binary form must reproduce the above
   *     copyright notice, this list of conditions and the following
   *     disclaimer in the documentation and/or other materials provided
   *     with the distribution.
   *   * Neither the name of the copyright holder(s) nor the names of its
   *     contributors may be used to endorse or promote products derived
   *     from this software without specific prior written permission.
   *
   *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   *  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   *  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   *  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   *  POSSIBILITY OF SUCH DAMAGE.
   *
   *
   * range coder based on Dmitry Subbotin's carry-less implementation (http://www.compression.ru/ds/)
   * Added optimized symbol lookup and fixed/static frequency tables
   *
   * Author: Julius Kammerl (julius@kammerl.de)
   */
  
  
  #include <pcl/compression/entropy_range_coder.h>
  #include <pcl/compression/impl/entropy_range_coder.hpp>
  
  #include <gtest/gtest.h>
  #include <vector>
  #include <sstream>
  
  
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  TEST (PCL, Adaptive_Range_Coder_Test)
  {
    size_t i;
    std::stringstream sstream;
    std::vector<char> inputData;
    std::vector<char> outputData;
  
    unsigned long writeByteLen;
    unsigned long readByteLen;
  
    // vector size
    const unsigned int vectorSize = 10000;
  
    inputData.resize(vectorSize);
    outputData.resize(vectorSize);
  
    // fill vector with random data
    for (i=0; i<vectorSize; i++)
    {
      inputData[i] = static_cast<char>(rand() & 0xFF);
    }
  
    // initialize adaptive range coder
    pcl::AdaptiveRangeCoder rangeCoder;
  
    // encode char vector to stringstream
    writeByteLen = rangeCoder.encodeCharVectorToStream(inputData, sstream);
  
    // decode stringstream to char vector
    readByteLen = rangeCoder.decodeStreamToCharVector(sstream, outputData);
  
    // compare amount of bytes that are read and written to/from stream
    EXPECT_EQ (writeByteLen, readByteLen);
    EXPECT_EQ (writeByteLen, sstream.str().length());
  
    // compare input and output vector - should be identical
    EXPECT_EQ (inputData.size(), outputData.size());
    EXPECT_EQ (inputData.size(), vectorSize);
  
    for (i=0; i<vectorSize; i++)
    {
      EXPECT_EQ (inputData[i], outputData[i]);
    }
  
  }
  
  //////////////////////////////////////////////////////////////////////////////////////////////////////////////////
  TEST (PCL, Static_Range_Coder_Test)
  {
    size_t i;
    std::stringstream sstream;
    std::vector<char> inputCharData;
    std::vector<char> outputCharData;
  
    std::vector<unsigned int> inputIntData;
    std::vector<unsigned int> outputIntData;
  
    unsigned long writeByteLen;
    unsigned long readByteLen;
  
    // vector size
    const unsigned int vectorSize = 10000;
  
    inputCharData.resize(vectorSize);
    outputCharData.resize(vectorSize);
  
    inputIntData.resize(vectorSize);
    outputIntData.resize(vectorSize);
  
    // fill vectors with random data
    for (i=0; i<vectorSize; i++)
    {
      inputCharData[i] = static_cast<char> (rand () & 0xFF);
      inputIntData[i] = static_cast<unsigned int> (rand () & 0xFFFF);
    }
  
    // initialize static range coder
    pcl::StaticRangeCoder rangeCoder;
  
    // encode char vector to stringstream
    writeByteLen = rangeCoder.encodeCharVectorToStream(inputCharData, sstream);
  
    // decode stringstream to char vector
    readByteLen = rangeCoder.decodeStreamToCharVector(sstream, outputCharData);
  
    // compare amount of bytes that are read and written to/from stream
    EXPECT_EQ (writeByteLen, readByteLen);
    EXPECT_EQ (writeByteLen, sstream.str().length());
  
    // compare input and output vector - should be identical
    EXPECT_EQ (inputCharData.size(), outputCharData.size());
    EXPECT_EQ (inputCharData.size(), vectorSize);
  
    for (i=0; i<vectorSize; i++)
    {
      EXPECT_EQ (inputCharData[i], outputCharData[i]);
    }
  
    sstream.clear();
  
    // encode integer vector to stringstream
    writeByteLen = rangeCoder.encodeIntVectorToStream(inputIntData, sstream);
  
    // decode stringstream to integer vector
    readByteLen = rangeCoder.decodeStreamToIntVector(sstream, outputIntData);
  
    // compare amount of bytes that are read and written to/from stream
    EXPECT_EQ (writeByteLen, readByteLen);
  
    // compare input and output vector - should be identical
    EXPECT_EQ (inputIntData.size(), outputIntData.size());
    EXPECT_EQ (inputIntData.size(), vectorSize);
  
    for (i=0; i<vectorSize; i++)
    {
      EXPECT_EQ (inputIntData[i], outputIntData[i]);
    }
  
  }
  
  
  
  /* ---[ */
  int
    main (int argc, char** argv)
  {
    testing::InitGoogleTest (&argc, argv);
    return (RUN_ALL_TESTS ());
  }
  /* ]--- */
  