DataChunk.cpp

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/*
MIT LICENSE

Copyright (c) 2014-2020 Inertial Sense, Inc. - http://inertialsense.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files(the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions :

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/

#include <stdio.h>
#include <string.h>
#include <stdarg.h>

#include "DataChunk.h"
#include "ISLogFileBase.h"
#include "ISLogFileFactory.h"

cDataChunk::cDataChunk()
{
        Clear();
        m_hdr.marker = DATA_CHUNK_MARKER;
        m_hdr.version = 1;
        m_hdr.classification = ' ' << 8 | 'U';
        m_hdr.grpNum = 0;                               
        m_hdr.devSerialNum = 0;                 
        m_hdr.reserved = 0;                             
    m_buffTail = m_buffHead + DEFAULT_CHUNK_DATA_SIZE;
        m_dataHead = m_buffHead;
        m_dataTail = m_buffHead;

        SetName("PDAT");
}


cDataChunk::~cDataChunk()
{
        
}


void cDataChunk::SetName(const char name[4])
{
        if (name == NULL)
        {
                return;
        }

        memcpy(m_hdr.name, name, 4);
        m_hdr.invName[0] = ~m_hdr.name[0];
        m_hdr.invName[1] = ~m_hdr.name[1];
        m_hdr.invName[2] = ~m_hdr.name[2];
        m_hdr.invName[3] = ~m_hdr.name[3];
}


bool cDataChunk::PushBack(uint8_t* d1, uint32_t d1Size, uint8_t* d2, uint32_t d2Size)
{
        // Ensure data will fit
        uint32_t count = d1Size + d2Size;
        if (m_dataHead == NULLPTR ||
                count > GetBuffFree())
        {
                return false;
        }
        if (d1Size > 0)
        {
        memcpy(m_dataTail, d1, d1Size);
        m_dataTail += d1Size;
                m_hdr.dataSize += d1Size;
        }
        if (d2Size > 0)
        {
        memcpy(m_dataTail, d2, d2Size);
        m_dataTail += d2Size;
                m_hdr.dataSize += d2Size;
        }
        m_hdr.invDataSize = ~m_hdr.dataSize;
        return true;
}


uint8_t* cDataChunk::GetDataPtr()
{
        return (GetDataSize() == 0 ? NULLPTR : m_dataHead);
}


bool cDataChunk::PopFront(uint32_t size)
{
        assert(m_dataHead != NULLPTR);

        if (size <= GetDataSize())
        {
        m_dataHead += size;
                m_hdr.dataSize -= size;
                m_hdr.invDataSize = ~m_hdr.dataSize;
                return true;
        }
        else
        {
        Clear();
                return false;
        }
}


void cDataChunk::Clear()
{
        m_hdr.dataSize = 0; 
        m_hdr.invDataSize = (uint32_t)~0; 
    m_dataHead = m_buffHead;
    m_dataTail = m_buffHead;

#if LOG_CHUNK_STATS
        memset(m_stats, 0, sizeof(m_stats));
#endif

}

// Returns number of bytes written, or -1 for error
int32_t cDataChunk::WriteToFile(cISLogFileBase* pFile, int groupNumber)
{
        if (pFile == NULLPTR)
        {
                return -1;
        }

        assert(m_dataHead != NULLPTR);

        m_hdr.grpNum = groupNumber;

        // Write chunk header to file
        int32_t nBytes = static_cast<int32_t>(pFile->write(&m_hdr, sizeof(sChunkHeader)));

        // Write any additional chunk header
        nBytes += WriteAdditionalChunkHeader(pFile);

        // Write chunk data to file
        nBytes += static_cast<int32_t>(pFile->write(m_dataHead, m_hdr.dataSize));

#if LOG_DEBUG_WRITE
        static int totalBytes = 0;
        totalBytes += nBytes;
        printf("%d : %d  -  %x %d", totalBytes, nBytes, m_Hdr.marker, m_Hdr.dataSize);
        if (nBytes != (headerSize + (int)m_Hdr.dataSize))
                printf("ERROR WRITING!");
        printf("\n");
#endif

        // Error writing to file
        if (nBytes != GetHeaderSize() + (int)m_hdr.dataSize)
        {
                return -1;
        }

        // Clear chunk data
        Clear();

        return nBytes;
}


// Returns number of bytes read, or -1 for error
int32_t cDataChunk::ReadFromFile(cISLogFileBase* pFile)
{
        if (pFile == NULLPTR)
        {
                return -1;
        }

        // reset state, prepare to read from file
        Clear();

        // Read chunk header
        int32_t nBytes = static_cast<int32_t>(pFile->read(&m_hdr, sizeof(sChunkHeader)));

        // Error checking
        if (m_hdr.dataSize != ~(m_hdr.invDataSize) || nBytes <= 0)
        {
                return -1;
        }

        // Read additional chunk header
        nBytes += ReadAdditionalChunkHeader(pFile);

//     // Error check data size
//     if (m_hdr.dataSize > MAX_DATASET_SIZE)
//     {
//         return -1;
//     }

        // Read chunk data
        m_dataTail += static_cast<int32_t>(pFile->read(m_buffHead, m_hdr.dataSize));
        nBytes += GetDataSize();

#if LOG_DEBUG_READ
        static int totalBytes = 0;
        totalBytes += nBytes;
        printf("%d : %d  -  %x %d  ", totalBytes, nBytes, m_Hdr.marker, m_Hdr.dataSize);
        if ((nBytes > 0) && (m_Hdr.marker != DATA_CHUNK_MARKER))
        {
                printf("MARKER MISMATCH!");
}
        printf("\n");
#endif

        if (m_hdr.marker == DATA_CHUNK_MARKER && nBytes == static_cast<int>(GetHeaderSize() + m_hdr.dataSize))
        {

#if LOG_CHUNK_STATS
                static bool start = true;
                int totalBytes = 0;
                for (int id = 0; id < DID_COUNT; id++)
                        if (m_stats[id].total)
                        {
                                if (start)
                                {
                                        start = false;
                                        logStats("------------------------------------------------\n");
                                        logStats("Chunk Data Summary\n");
                                        logStats("   ID:  Count:  Sizeof:  Total:\n");
                                }
                                logStats(" %4d%8d    %5d %7d\n", id, m_stats[id].count, m_stats[id].size, m_stats[id].total);
                                totalBytes += m_stats[id].total;
                        }
                start = true;
                if (totalBytes)
                {
                        logStats("------------------------------------------------\n");
                        logStats("                      %8d Total bytes\n", totalBytes);
                }
                logStats("\n");
                logStats("================================================\n");
                logStats("            *.dat Data Log File\n");
                logStats("================================================\n");
                m_Hdr.print();
#if LOG_CHUNK_STATS==2
                logStats("------------------------------------------------\n");
                logStats("Chunk Data\n");
#endif
                memset(m_stats, 0, sizeof(m_stats));
#endif

                return nBytes;
        }
        else
        {
        Clear();

                // Error reading from file
                return -1;
        }
}


int32_t cDataChunk::WriteAdditionalChunkHeader(cISLogFileBase* /*pFile*/)
{
        return 0;
}


int32_t cDataChunk::ReadAdditionalChunkHeader(cISLogFileBase* /*pFile*/)
{
        return 0;
}


int32_t cDataChunk::GetHeaderSize()
{
        return (int32_t)sizeof(sChunkHeader);
}


// LOG_CHUNK_STATS
void logStats( const char *format, ... )
{
#if !defined(PLATFORM_IS_EVB_2) || !PLATFORM_IS_EVB_2
        static cISLogFileBase* pFile = NULL;
#endif

        va_list args;
        va_start( args, format );

#if PLATFORM_IS_EVB_2
        vprintf( format, args );                        // print to terminal
#else
        if( pFile == NULL ) {
                pFile = CreateISLogFile("STATS_.txt", "w");
        }
        pFile->vprintf(format, args);   // print to file
#endif
        va_end( args );
}