ancillarydata_timecode_atc.cpp

Go to the documentation of this file.

/* SPDX-License-Identifier: MIT */
#include "ancillarydata_timecode_atc.h"
#include "ntv2publicinterface.h"
#include <ios>
#include <iomanip>
 
using namespace std;
 
 
 
AJAAncillaryData_Timecode_ATC::AJAAncillaryData_Timecode_ATC() : AJAAncillaryData_Timecode()
{
    Init();
}
 
 
AJAAncillaryData_Timecode_ATC::AJAAncillaryData_Timecode_ATC(const AJAAncillaryData_Timecode_ATC& clone) : AJAAncillaryData_Timecode()
{
    Init();
 
    *this = clone;
}
 
 
AJAAncillaryData_Timecode_ATC::AJAAncillaryData_Timecode_ATC(const AJAAncillaryData_Timecode_ATC *pClone) : AJAAncillaryData_Timecode()
{
    Init();
 
    if (pClone != NULL_PTR)
        *this = *pClone;
}
 
 
AJAAncillaryData_Timecode_ATC::AJAAncillaryData_Timecode_ATC(const AJAAncillaryData *pData) : AJAAncillaryData_Timecode(pData)
{
    Init();
}
 
 
AJAAncillaryData_Timecode_ATC::~AJAAncillaryData_Timecode_ATC()
{
}
 
 
void AJAAncillaryData_Timecode_ATC::Init()
{
    m_ancType = AJAAncDataType_Timecode_ATC;
    m_coding  = AJAAncDataCoding_Digital;
    m_DID     = AJAAncillaryData_SMPTE12M_DID;
    m_SID     = AJAAncillaryData_SMPTE12M_SID;
 
    m_dbb1 = 0;
    m_dbb2 = 0;
}
 
 
AJAAncillaryData_Timecode_ATC & AJAAncillaryData_Timecode_ATC::operator = (const AJAAncillaryData_Timecode_ATC & rhs)
{
    if (this != &rhs)       // ignore self-assignment
    {
        AJAAncillaryData_Timecode::operator= (rhs);     // copy the base class stuff
 
        m_dbb1 = rhs.m_dbb1;
        m_dbb2 = rhs.m_dbb2;
    }
 
    return *this;
}
 
 
void AJAAncillaryData_Timecode_ATC::Clear()
{
    AJAAncillaryData_Timecode::Clear();
 
    Init();
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::SetDBB1(uint8_t dbb1)
{
    m_dbb1 = dbb1;
 
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::GetDBB1 (uint8_t & dbb1) const
{
    dbb1 = m_dbb1;
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::SetDBB2 (uint8_t dbb2)
{
    m_dbb2 = dbb2;
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::GetDBB2 (uint8_t & dbb2) const
{
    dbb2 = m_dbb2;
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::SetDBB (uint8_t dbb1, uint8_t dbb2)
{
    SetDBB1(dbb1);
    SetDBB2(dbb2);
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::GetDBB (uint8_t & dbb1, uint8_t & dbb2) const
{
    GetDBB1(dbb1);
    GetDBB2(dbb2);
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::ParsePayloadData (void)
{
    AJAStatus status = AJA_STATUS_SUCCESS;
 
    // reality check...
    if (GetDC() < AJAAncillaryData_SMPTE12M_PayloadSize)
    {
        Init();                     // load default values
        status = AJA_STATUS_FAIL;
        m_rcvDataValid = false;
    }
    else
    {
        // we have some kind of payload data - try to parse it
        // extract the time digits from the even payload words, bits[7:4]
        // (note: SetTimeHexValue() does the needed masking)
        SetTimeHexValue(kTcFrameUnits,  (m_payload[ 0] >> 4));      // frame units);
        SetTimeHexValue(kTcFrameTens,   (m_payload[ 2] >> 4));      // frame tens
        SetTimeHexValue(kTcSecondUnits, (m_payload[ 4] >> 4));      // second units
        SetTimeHexValue(kTcSecondTens,  (m_payload[ 6] >> 4));      // second tens
        SetTimeHexValue(kTcMinuteUnits, (m_payload[ 8] >> 4));      // minute units
        SetTimeHexValue(kTcMinuteTens,  (m_payload[10] >> 4));      // minute tens
        SetTimeHexValue(kTcHourUnits,   (m_payload[12] >> 4));      // hour units
        SetTimeHexValue(kTcHourTens,    (m_payload[14] >> 4));      // hour tens
 
        // extract the binary group values from the odd payload words, bits[7:4]
        // (note: SetBinaryGroupHexValue() does the needed masking)
        SetBinaryGroupHexValue(kBg1, (m_payload[ 1] >> 4));     // BG 1
        SetBinaryGroupHexValue(kBg2, (m_payload[ 3] >> 4));     // BG 2
        SetBinaryGroupHexValue(kBg3, (m_payload[ 5] >> 4));     // BG 3
        SetBinaryGroupHexValue(kBg4, (m_payload[ 7] >> 4));     // BG 4
        SetBinaryGroupHexValue(kBg5, (m_payload[ 9] >> 4));     // BG 5
        SetBinaryGroupHexValue(kBg6, (m_payload[11] >> 4));     // BG 6
        SetBinaryGroupHexValue(kBg7, (m_payload[13] >> 4));     // BG 7
        SetBinaryGroupHexValue(kBg8, (m_payload[15] >> 4));     // BG 8
 
        // extract the distributed bits from bit[3] of all UDW
        uint8_t i;
        uint8_t dbb = 0;        // DBB1 comes from UDW1 - UDW8 bit 3, ls bit first
        for (i = 0; i < 8; i++)
        {
            dbb = dbb >> 1;
            dbb |= (m_payload[i] << 4) & 0x80;
        }
        m_dbb1 = dbb;
 
        dbb = 0;                // DBB2 comes from UDW9 - UDW16 bit 3, ls bit first
        for (i = 8; i < 16; i++)
        {
            dbb = dbb >> 1;
            dbb |= (m_payload[i] << 4) & 0x80;
        }
        m_dbb2 = dbb;
        m_rcvDataValid = true;
    }
 
    return status;
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::GeneratePayloadData (void)
{
    SetDID(AJAAncillaryData_SMPTE12M_DID);
    SetSID(AJAAncillaryData_SMPTE12M_SID);
    SetLocationHorizOffset(AJAAncDataHorizOffset_AnyHanc);
 
    AJAStatus status = AllocDataMemory(AJAAncillaryData_SMPTE12M_PayloadSize);
    if (AJA_FAILURE(status))
        return status;
 
    // time digits in the even payload words
    m_payload[ 0] = (m_timeDigits[kTcFrameUnits]  & 0x0F) << 4;
    m_payload[ 2] = (m_timeDigits[kTcFrameTens]   & 0x0F) << 4;
    m_payload[ 4] = (m_timeDigits[kTcSecondUnits] & 0x0F) << 4;
    m_payload[ 6] = (m_timeDigits[kTcSecondTens]  & 0x0F) << 4;
    m_payload[ 8] = (m_timeDigits[kTcMinuteUnits] & 0x0F) << 4;
    m_payload[10] = (m_timeDigits[kTcMinuteTens]  & 0x0F) << 4;
    m_payload[12] = (m_timeDigits[kTcHourUnits]   & 0x0F) << 4;
    m_payload[14] = (m_timeDigits[kTcHourTens]    & 0x0F) << 4;
 
    // binary group data in the odd payload words
    m_payload[ 1] = (m_binaryGroup[kBg1] & 0x0F) << 4;  
    m_payload[ 3] = (m_binaryGroup[kBg2] & 0x0F) << 4;
    m_payload[ 5] = (m_binaryGroup[kBg3] & 0x0F) << 4;
    m_payload[ 7] = (m_binaryGroup[kBg4] & 0x0F) << 4;
    m_payload[ 9] = (m_binaryGroup[kBg5] & 0x0F) << 4;
    m_payload[11] = (m_binaryGroup[kBg6] & 0x0F) << 4;
    m_payload[13] = (m_binaryGroup[kBg7] & 0x0F) << 4;
    m_payload[15] = (m_binaryGroup[kBg8] & 0x0F) << 4;
 
    // add the distributed bits
    uint8_t i;
    uint8_t dbb = m_dbb1;       // DBB1 goes into UDW1 - 8, ls bit first
    for (i = 0; i < 8; i++)
    {
        m_payload[i] |= (dbb & 0x01) << 3;
        dbb = dbb >> 1;
    }
 
    dbb = m_dbb2;               // DBB2 goes into UDW9 - 16, ls bit first
    for (i = 8; i < 16; i++)
    {
        m_payload[i] |= (dbb & 0x01) << 3;
        dbb = dbb >> 1;
    }
 
    m_checksum = Calculate8BitChecksum();
    return AJA_STATUS_SUCCESS;
}
 
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::SetDBB1PayloadType (const AJAAncillaryData_Timecode_ATC_DBB1PayloadType inType)
{
    if (inType != AJAAncillaryData_Timecode_ATC_DBB1PayloadType_VITC2)
        SetLocationLineNumber(9);   //  All but Field2 should go on line 9
    return SetDBB1(uint8_t(inType));
}
 
 
AJAStatus AJAAncillaryData_Timecode_ATC::GetDBB1PayloadType (AJAAncillaryData_Timecode_ATC_DBB1PayloadType & outType) const
{
    uint8_t dbb1;
    GetDBB1 (dbb1);
    outType = AJAAncillaryData_Timecode_ATC_DBB1PayloadType_Unknown;
 
    switch (dbb1)
    {
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_LTC:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_VITC1:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_VITC2:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_ReaderFilmData:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_ReaderProdData:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_LocalVideoData:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_LocalFilmData:
        case AJAAncillaryData_Timecode_ATC_DBB1PayloadType_LocalProdData:
            outType = AJAAncillaryData_Timecode_ATC_DBB1PayloadType (dbb1);
            break;
 
        default:
            break;
    }
    return AJA_STATUS_SUCCESS;
}
 
 
 
AJAAncDataType AJAAncillaryData_Timecode_ATC::RecognizeThisAncillaryData (const AJAAncillaryData * pInAncData)
{
    if (pInAncData->GetDataCoding() == AJAAncDataCoding_Digital)
        if (pInAncData->GetDID() == AJAAncillaryData_SMPTE12M_DID)
            if (pInAncData->GetSID() == AJAAncillaryData_SMPTE12M_SID)
                if (pInAncData->GetDC() == AJAAncillaryData_SMPTE12M_PayloadSize)
                    return AJAAncDataType_Timecode_ATC;
    return AJAAncDataType_Unknown;
}
 
 
ostream & AJAAncillaryData_Timecode_ATC::Print (ostream & debugStream, const bool bShowDetail) const
{
    AJAAncillaryData_Timecode::Print (debugStream, bShowDetail);    // print the generic stuff
    debugStream << endl
                << "DBB1: " << xHEX0N(uint16_t(m_dbb1),2) << endl
                << "DBB2: " << xHEX0N(uint16_t(m_dbb2),2);
    return debugStream;
}