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/*
* 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 <pcl/test/gtest.h>
#include <vector>
#include <sstream>
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
TEST (PCL, Adaptive_Range_Coder_Test)
{
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 (std::size_t 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 (std::size_t i=0; i<vectorSize; i++)
{
EXPECT_EQ (inputData[i], outputData[i]);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
TEST (PCL, Static_Range_Coder_Test)
{
// Run test for different vector sizes
for (unsigned int vectorSize: { 253, 10000 })
{
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;
inputCharData.resize(vectorSize);
outputCharData.resize(vectorSize);
inputIntData.resize(vectorSize);
outputIntData.resize(vectorSize);
// fill vectors with random data
for (std::size_t 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 (std::size_t 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 (std::size_t 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 ());
}
/* ]--- */
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