ancillarydata.cpp

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/* SPDX-License-Identifier: MIT */
#include "ntv2publicinterface.h"
#include "ancillarydata.h"
#include "ajabase/system/debug.h"   //  This makes 'ajaanc' dependent upon 'ajabase'
#include "ajabase/system/atomic.h"
#include "ajabase/system/lock.h"
#if defined(AJA_LINUX)
    #include <string.h>             // For memcpy
    #include <stdlib.h>             // For realloc
#endif
#include <ios>
 
using namespace std;
 
#define LOGGING_ANCDATA     AJADebug::IsActive(AJA_DebugUnit_AJAAncData)
#define LOGGING_ANC2110RX   AJADebug::IsActive(AJA_DebugUnit_Anc2110Rcv)
#define LOGGING_ANC2110TX   AJADebug::IsActive(AJA_DebugUnit_Anc2110Xmit)
 
#define LOGMYERROR(__x__)   {if (LOGGING_ANCDATA) AJA_sERROR  (AJA_DebugUnit_AJAAncData, AJAFUNC << ":  " << __x__);}
#define LOGMYWARN(__x__)    {if (LOGGING_ANCDATA) AJA_sWARNING(AJA_DebugUnit_AJAAncData, AJAFUNC << ":  " << __x__);}
#define LOGMYNOTE(__x__)    {if (LOGGING_ANCDATA) AJA_sNOTICE (AJA_DebugUnit_AJAAncData, AJAFUNC << ":  " << __x__);}
#define LOGMYINFO(__x__)    {if (LOGGING_ANCDATA) AJA_sINFO   (AJA_DebugUnit_AJAAncData, AJAFUNC << ":  " << __x__);}
#define LOGMYDEBUG(__x__)   {if (LOGGING_ANCDATA) AJA_sDEBUG  (AJA_DebugUnit_AJAAncData, AJAFUNC << ":  " << __x__);}
 
#define RCV2110ERR(__x__)   {if (LOGGING_ANC2110RX) AJA_sERROR  (AJA_DebugUnit_Anc2110Rcv, AJAFUNC << ":  " << __x__);}
#define RCV2110WARN(__x__)  {if (LOGGING_ANC2110RX) AJA_sWARNING(AJA_DebugUnit_Anc2110Rcv, AJAFUNC << ":  " << __x__);}
#define RCV2110NOTE(__x__)  {if (LOGGING_ANC2110RX) AJA_sNOTICE (AJA_DebugUnit_Anc2110Rcv, AJAFUNC << ":  " << __x__);}
#define RCV2110INFO(__x__)  {if (LOGGING_ANC2110RX) AJA_sINFO   (AJA_DebugUnit_Anc2110Rcv, AJAFUNC << ":  " << __x__);}
#define RCV2110DBG(__x__)   {if (LOGGING_ANC2110RX) AJA_sDEBUG  (AJA_DebugUnit_Anc2110Rcv, AJAFUNC << ":  " << __x__);}
 
#define XMT2110ERR(__x__)   {if (LOGGING_ANC2110TX) AJA_sERROR  (AJA_DebugUnit_Anc2110Xmit, AJAFUNC << ":  " << __x__);}
#define XMT2110WARN(__x__)  {if (LOGGING_ANC2110TX) AJA_sWARNING(AJA_DebugUnit_Anc2110Xmit, AJAFUNC << ":  " << __x__);}
#define XMT2110NOTE(__x__)  {if (LOGGING_ANC2110TX) AJA_sNOTICE (AJA_DebugUnit_Anc2110Xmit, AJAFUNC << ":  " << __x__);}
#define XMT2110INFO(__x__)  {if (LOGGING_ANC2110TX) AJA_sINFO   (AJA_DebugUnit_Anc2110Xmit, AJAFUNC << ":  " << __x__);}
#define XMT2110DBG(__x__)   {if (LOGGING_ANC2110TX) AJA_sDEBUG  (AJA_DebugUnit_Anc2110Xmit, AJAFUNC << ":  " << __x__);}
 
#if defined(AJA_WINDOWS)
    const size_t sENDL(2);  //  CRLF
#else
    const size_t sENDL(1);  //  LF
#endif
 
//  RCV2110DDBG & XMT2110DDBG are for EXTREMELY detailed debug logging:
#if 0   // DetailedDebugging
    #define RCV2110DDBG(__x__)  RCV2110DBG(__x__)
    #define XMT2110DDBG(__x__)  XMT2110DBG(__x__)
#else
    #define RCV2110DDBG(__x__)  
    #define XMT2110DDBG(__x__)  
#endif
 
#if defined(AJAHostIsBigEndian)
    //  Host is BigEndian (BE)
    #define AJA_ENDIAN_16NtoH(__val__)      (__val__)
    #define AJA_ENDIAN_16HtoN(__val__)      (__val__)
    #define AJA_ENDIAN_32NtoH(__val__)      (__val__)
    #define AJA_ENDIAN_32HtoN(__val__)      (__val__)
    #define AJA_ENDIAN_64NtoH(__val__)      (__val__)
    #define AJA_ENDIAN_64HtoN(__val__)      (__val__)
#else
    //  Host is LittleEndian (LE)
    #define AJA_ENDIAN_16NtoH(__val__)      AJA_ENDIAN_SWAP16(__val__)
    #define AJA_ENDIAN_16HtoN(__val__)      AJA_ENDIAN_SWAP16(__val__)
    #define AJA_ENDIAN_32NtoH(__val__)      AJA_ENDIAN_SWAP32(__val__)
    #define AJA_ENDIAN_32HtoN(__val__)      AJA_ENDIAN_SWAP32(__val__)
    #define AJA_ENDIAN_64NtoH(__val__)      AJA_ENDIAN_SWAP64(__val__)
    #define AJA_ENDIAN_64HtoN(__val__)      AJA_ENDIAN_SWAP64(__val__)
#endif
 
 
static inline uint32_t ENDIAN_32NtoH(const uint32_t inValue)    {return AJA_ENDIAN_32NtoH(inValue);}
static inline uint32_t ENDIAN_32HtoN(const uint32_t inValue)    {return AJA_ENDIAN_32HtoN(inValue);}
 
 
const uint32_t AJAAncillaryDataWrapperSize  = 7;    //  3 bytes header + DID + SID + DC + Checksum: i.e. everything EXCEPT the payload
const uint32_t AJAAuxillaryPacketSize       = 32;   //  HDMI Aux packets are always 32 bytes
 
#if defined(_DEBUG)
    static uint32_t gConstructCount(0); //  Number of constructor calls made
    static uint32_t gDestructCount(0);  //  Number of destructor calls made
#endif  //  defined(_DEBUG)
 
 
 
 
AJAAncillaryData::AJAAncillaryData()
{
#if defined(_DEBUG)
    AJAAtomic::Increment(&gConstructCount);
#endif  //  defined(_DEBUG)
    Init();
}
 
 
AJAAncillaryData::AJAAncillaryData (const AJAAncillaryData & inClone)
{
#if defined(_DEBUG)
    AJAAtomic::Increment(&gConstructCount);
#endif  //  defined(_DEBUG)
    Init();
    *this = inClone;
}
 
 
AJAAncillaryData::AJAAncillaryData (const AJAAncillaryData * pClone)
{
#if defined(_DEBUG)
    AJAAtomic::Increment(&gConstructCount);
#endif  //  defined(_DEBUG)
    Init();
    if (pClone)
        *this = *pClone;
}
 
 
AJAAncillaryData::~AJAAncillaryData ()
{
#if defined(_DEBUG)
    AJAAtomic::Increment(&gDestructCount);
#endif  //  defined(_DEBUG)
    FreeDataMemory();
}
 
 
void AJAAncillaryData::Init()
{
    FreeDataMemory();   // reset all internal data to defaults
 
    m_DID           = 0x00;
    m_SID           = 0x00;
    m_checksum      = 0;
    m_frameID       = 0;
    m_userData      = 0;
    m_rcvDataValid  = false;
    m_coding        = AJAAncDataCoding_Digital;
    m_ancType       = AJAAncDataType_Unknown;
    m_bufferFmt     = AJAAncBufferFormat_Unknown;
    //  Default location:
    m_location.SetDataLink(AJAAncDataLink_A)                        //  LinkA
                .SetDataStream(AJAAncDataStream_1)                  //  DS1
                .SetDataChannel(AJAAncDataChannel_Y)                //  Y channel
//              .SetDataSpace(AJAAncDataSpace_VANC)                 //  VANC
                .SetHorizontalOffset(AJAAncDataHorizOffset_AnyVanc) //  VANC
                .SetLineNumber(AJAAncDataLineNumber_Unknown);       //  Unknown line number
    
    // HDMI Aux specific
    m_auxType = 0;
    m_auxHB1 = 0;
    m_auxHB2 = 0;
}
 
 
void AJAAncillaryData::Clear (void)
{
    Init();
}
 
 
AJAAncillaryData * AJAAncillaryData::Clone (void) const
{
    return new AJAAncillaryData (this);
}
 
 
AJAStatus AJAAncillaryData::AllocDataMemory(uint32_t numBytes)
{
    AJAStatus status;
    FreeDataMemory();
    try
    {
        m_payload.reserve(numBytes);
        for (uint32_t ndx(0);  ndx < numBytes;  ndx++)
            m_payload.push_back(0);
        status = AJA_STATUS_SUCCESS;
    }
    catch(const bad_alloc &)
    {
        m_payload.clear();
        status = AJA_STATUS_MEMORY;
    }
    if (AJA_FAILURE(status))
        LOGMYERROR(::AJAStatusToString(status) << ": Unable to allocate/reserve " << DEC(numBytes) << " bytes");
    return status;
}
 
 
AJAStatus AJAAncillaryData::FreeDataMemory (void)
{
    m_payload.clear();
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData::SetDID (const uint8_t inDID)
{
    m_DID = inDID;
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData::SetSID (const uint8_t inSID)
{
    m_SID = inSID;
    return AJA_STATUS_SUCCESS;
}
 
AJAStatus AJAAncillaryData::SetChecksum (const uint8_t inChecksum, const bool inValidate)
{
    m_checksum = inChecksum;
    if (inValidate)
        if (inChecksum != Calculate8BitChecksum())
            return AJA_STATUS_FAIL;
    return AJA_STATUS_SUCCESS;
}
 
 
uint16_t AJAAncillaryData::GetStreamInfo (void) const
{
    if (IS_VALID_AJAAncDataStream(GetLocationDataStream()))
        return uint16_t(GetLocationDataStream());
    else if (IS_VALID_AJAAncDataLink(GetLocationVideoLink()))
        return uint16_t(GetLocationVideoLink());
    return 0;
}
 
 
uint8_t AJAAncillaryData::Calculate8BitChecksum (void) const
{
    //  NOTE:   This is NOT the "real" 9-bit checksum used in SMPTE 291 Ancillary packets,
    //          but it's calculated the same way and should be the same as the LS 8-bits
    //          of the 9-bit checksum...
    uint8_t sum (m_DID);
    sum += m_SID;
    sum += uint8_t(m_payload.size());
    if (!m_payload.empty())
        for (ByteVector::size_type ndx(0);  ndx < m_payload.size();  ndx++)
            sum += m_payload[ndx];
NTV2_ASSERT(sum == uint8_t(Calculate9BitChecksum()));
    return sum;
}
 
 
uint16_t AJAAncillaryData::Calculate9BitChecksum (void) const
{
    //  SMPTE 291-1:2011:   6.7 Checksum Word
    uint16_t    sum (AddEvenParity(m_DID)); //  DID
    sum += AddEvenParity(m_SID);                //  + SDID
    sum += AddEvenParity(UByte(GetDC()));   //  + DC
    if (!m_payload.empty())                                     //  + payload:
        for (ByteVector::size_type ndx(0);  ndx < m_payload.size();  ndx++)
            sum += AddEvenParity(m_payload[ndx]);
 
    const bool  b8  ((sum & 0x100) != 0);
    const bool  b9  (!b8);
    return (sum & 0x1FF) | (b9 ? 0x200 : 0x000);
}
 
 
//**********
// Set anc data location parameters
//
AJAStatus AJAAncillaryData::SetDataLocation (const AJAAncDataLoc & loc)
{
    AJAStatus   status  (SetLocationVideoLink(loc.GetDataLink()));
    if (AJA_SUCCESS(status))
        status = SetLocationDataStream(loc.GetDataStream());
    if (AJA_SUCCESS(status))
        status = SetLocationDataChannel(loc.GetDataChannel());
    if (AJA_SUCCESS(status))
        status = SetLocationHorizOffset(loc.GetHorizontalOffset());
    if (AJA_SUCCESS(status))
        status = SetLocationLineNumber(loc.GetLineNumber());
    return status;
}
 
 
//-------------
//
AJAStatus AJAAncillaryData::SetLocationVideoLink (const AJAAncDataLink inLinkValue)
{
    if (!IS_VALID_AJAAncDataLink(inLinkValue))
        return AJA_STATUS_RANGE;
 
    m_location.SetDataLink(inLinkValue);
    return AJA_STATUS_SUCCESS;
}
 
 
//-------------
//
AJAStatus AJAAncillaryData::SetLocationDataStream (const AJAAncDataStream inStream)
{
    if (!IS_VALID_AJAAncDataStream(inStream))
        return AJA_STATUS_RANGE;
 
    m_location.SetDataStream(inStream);
    return AJA_STATUS_SUCCESS;
}
 
 
//-------------
//
AJAStatus AJAAncillaryData::SetLocationDataChannel (const AJAAncDataChannel inChannel)
{
    if (!IS_VALID_AJAAncDataChannel(inChannel))
        return AJA_STATUS_RANGE;
 
    m_location.SetDataChannel(inChannel);
    return AJA_STATUS_SUCCESS;
}
 
 
//-------------
//
AJAStatus AJAAncillaryData::SetLocationLineNumber (const uint16_t inLineNum)
{
    //  No range checking here because we don't know how tall the frame is
    m_location.SetLineNumber(inLineNum);
    return AJA_STATUS_SUCCESS;
}
 
 
//-------------
//
AJAStatus AJAAncillaryData::SetLocationHorizOffset (const uint16_t inOffset)
{
    //  No range checking here because we don't know how wide the frame is
    m_location.SetHorizontalOffset(inOffset);
    return AJA_STATUS_SUCCESS;
}
 
//-------------
//
AJAStatus AJAAncillaryData::SetDataCoding (const AJAAncDataCoding inCodingType)
{
    if (m_coding != AJAAncDataCoding_Digital    &&  m_coding != AJAAncDataCoding_Raw)
        return AJA_STATUS_RANGE;
 
    m_coding = inCodingType;
    return AJA_STATUS_SUCCESS;
}
 
 
//**********
// Copy payload data from external source to internal storage. Erases current payload memory
// (if any) and allocates new memory
 
AJAStatus AJAAncillaryData::SetPayloadData (const uint8_t * pInData, const uint32_t inNumBytes)
{
    if (pInData == NULL || inNumBytes == 0)
        return AJA_STATUS_NULL;
 
    //  [Re]Allocate...
    AJAStatus status (AllocDataMemory(inNumBytes));
    if (AJA_FAILURE(status))
        return status;
 
    //  Copy payload into memory...
    ::memcpy (&m_payload[0], pInData, inNumBytes);
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData::SetFromSMPTE334 (const uint16_t * pInData, const uint32_t inNumWords, const AJAAncDataLoc & inLocInfo)
{
    if (!pInData)
        return AJA_STATUS_NULL;
    if (inNumWords < 7)
        return AJA_STATUS_RANGE;
 
    const uint32_t  payloadByteCount    (uint32_t(pInData[5] & 0x00FF));
    if ((inNumWords - 7) > payloadByteCount)
        return AJA_STATUS_RANGE;
 
    //  [Re]Allocate...
    const AJAStatus status  (AllocDataMemory(payloadByteCount));
    if (AJA_FAILURE(status))
        return status;
 
    //  Copy payload into new memory...
    for (uint32_t numWord (0);  numWord < payloadByteCount;  numWord++)
        m_payload[numWord] = UByte(pInData[6+numWord] & 0x00FF);
 
    SetDataCoding(AJAAncDataCoding_Digital);
    SetDataLocation(inLocInfo);
    SetChecksum(UByte(pInData[6+payloadByteCount] & 0x00FF));
    SetDID(UByte(pInData[3] & 0x00FF));
    SetSID(UByte(pInData[4] & 0x00FF));
 
    return AJA_STATUS_SUCCESS;
}
 
 
//**********
// Append payload data from external source to existing internal storage. Realloc's current
// payload memory (if any) or allocates new memory
 
AJAStatus AJAAncillaryData::AppendPayloadData (const uint8_t * pInData, const uint32_t inNumBytes)
{
    if (pInData == NULL || inNumBytes == 0)
        return AJA_STATUS_NULL;
 
    try
    {
        for (uint32_t ndx(0);  ndx < inNumBytes;  ndx++)
            m_payload.push_back(pInData[ndx]);
    }
    catch(const bad_alloc &)
    {
        return AJA_STATUS_MEMORY;
    }
    
    return AJA_STATUS_SUCCESS;
}
 
 
//**********
// Append payload data from an external AJAAncillaryData object to existing internal storage.
 
AJAStatus AJAAncillaryData::AppendPayload (const AJAAncillaryData & inAnc)
{
    try
    {
        const uint8_t * pInData     (inAnc.GetPayloadData());
        const uint32_t  numBytes    (uint32_t(inAnc.GetPayloadByteCount()));
        for (uint32_t ndx(0);  ndx < numBytes;  ndx++)
            m_payload.push_back(pInData[ndx]);
    }
    catch(const bad_alloc &)
    {
        return AJA_STATUS_MEMORY;
    }
 
    return AJA_STATUS_SUCCESS;
}
 
 
//**********
// Copy payload data from internal storage to external destination.
 
AJAStatus AJAAncillaryData::GetPayloadData (uint8_t * pOutData, const uint32_t inNumBytes) const
{
    if (pOutData == NULL)
        return AJA_STATUS_NULL;
 
    if (ByteVectorIndex(inNumBytes) > m_payload.size())
        return AJA_STATUS_RANGE;
 
    ::memcpy (pOutData, GetPayloadData(), inNumBytes);
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData::GetPayloadData (UWordSequence & outUDWs, const bool inAddParity) const
{
    AJAStatus   status  (AJA_STATUS_SUCCESS);
    const UWordSequence::size_type  origSize    (outUDWs.size());
    for (ByteVectorConstIter iter(m_payload.begin());  iter != m_payload.end()  &&  AJA_SUCCESS(status);  ++iter)
    {
        const uint16_t  UDW (inAddParity ? AddEvenParity(*iter) : *iter);
        try
        {
            outUDWs.push_back(UDW); //  Copy 8-bit data into LS 8 bits, add even parity to bit 8, and ~bit 8 to bit 9
        }
        catch(...)
        {
            status = AJA_STATUS_MEMORY;
        }
    }   //  for each packet byte
    if (AJA_FAILURE(status))
        outUDWs.resize(origSize);
    return status;
}
 
 
uint8_t AJAAncillaryData::GetPayloadByteAtIndex (const uint32_t inIndex0) const
{
    if (ByteVectorIndex(inIndex0) < m_payload.size())
        return m_payload[inIndex0];
    else
        return 0;
}
 
 
AJAStatus AJAAncillaryData::SetPayloadByteAtIndex (const uint8_t inDataByte, const uint32_t inIndex0)
{
    if (inIndex0 >= GetDC())
        return AJA_STATUS_RANGE;
 
    m_payload[inIndex0] = inDataByte;
    return AJA_STATUS_SUCCESS;
}
 
 
AJAStatus AJAAncillaryData::ParsePayloadData (void)
{
    // should be overridden by derived classes to parse payload data to local data
    m_rcvDataValid = false;
 
    return AJA_STATUS_SUCCESS;
}
 
 
//**********
//  [Re]Initializes me from the 8-bit GUMP buffer received from extractor (ingest)
AJAStatus AJAAncillaryData::InitWithReceivedData (const uint8_t *           pInData,
                                                    const size_t            inMaxBytes,
                                                    const AJAAncDataLoc &   inLocationInfo,
                                                    uint32_t &              outPacketByteCount)
{
    AJAStatus status = AJA_STATUS_SUCCESS;
    Clear();
 
    // If all is well, pInData points to the beginning of a "GUMP" packet:
    //
    //  pInData ->  0:  0xFF            // 1st byte is always FF
    //              1:  Hdr data1       // location data byte #1
    //              2:  Hdr data2       // location data byte #2
    //              3:  DID             // ancillary packet Data ID
    //              4:  SID             // ancillary packet Secondary ID (or DBN)
    //              5:  DC              // ancillary packet Data Count (size of payload: 0 - 255)
    //              6:  Payload[0]      // 1st byte of payload UDW
    //              7:  Payload[1]      // 2nd byte of payload UDW
    //             ...    ...
    //       (5 + DC):  Payload[DC-1]   // last byte of payload UDW
    //       (6 + DC):  CS (checksum)   // 8-bit sum of (DID + SID + DC + Payload[0] + ... + Payload[DC-1])
    //
    //       (7 + DC):  (start of next packet, if any...) returned in packetSize.
    //
    // Note that this is the layout of the data as returned from the Anc Extractor hardware, and
    // is NOT exactly the same as SMPTE-291.
    //
    // The inMaxBytes input gives us an indication of how many "valid" bytes remain in the caller's TOTAL
    // ANC Data buffer. We use this as a sanity check to make sure we don't try to parse past the end
    // of the captured data.
    //
    // The caller provides an AJAAncDataLoc struct with all of the information filled in
    // except the line number.
    //
    // When we have extracted the useful data from the packet, we return the packet size, in bytes, so the
    // caller can find the start of the next packet (if any).
 
    const uint32_t maxBytes(uint32_t(inMaxBytes+0));
    if (pInData == AJA_NULL)
    {
        outPacketByteCount = 0;
        LOGMYERROR("AJA_STATUS_NULL: NULL pointer");
        return AJA_STATUS_NULL;
    }
 
    //  The minimum size for a packet (i.e. no payload) is 7 bytes
    if (maxBytes < AJAAncillaryDataWrapperSize)
    {
        outPacketByteCount = maxBytes;
        LOGMYERROR("AJA_STATUS_RANGE: Buffer size " << maxBytes << " smaller than " << AJAAncillaryDataWrapperSize << " bytes");
        return AJA_STATUS_RANGE;
    }
 
    //  The first byte should be 0xFF. If it's not, then the Anc data stream may be broken...
    if (pInData[0] != 0xFF)
    {
        //  Let the caller try to resynchronize...
        outPacketByteCount = 0;
        LOGMYDEBUG("No data:  First GUMP byte is " << xHEX0N(uint16_t(pInData[0]),2) << ", expected 0xFF");
        return AJA_STATUS_SUCCESS;  //  Not necessarily an error (no data)
    }
 
    //  So we have at least enough bytes for a minimum packet, and the first byte is what we expect.
    //  Let's see what size this packet actually reports...
    const uint32_t  totalBytes  (pInData[5] + AJAAncillaryDataWrapperSize);
 
    //  If the reported packet size extends beyond the end of the buffer, we're toast...
    if (totalBytes > maxBytes)
    {
        outPacketByteCount = maxBytes;
        LOGMYERROR("AJA_STATUS_RANGE: Reported packet size " << totalBytes << " [bytes] extends past end of buffer " << inMaxBytes << " by " << (totalBytes-inMaxBytes) << " byte(s)");
        return AJA_STATUS_RANGE;
    }
 
    //  OK... There's enough data in the buffer to contain the packet, and everything else checks out,
    //  so continue parsing the data...
    m_DID      = pInData[3];                // SMPTE-291 Data ID
    m_SID      = pInData[4];                // SMPTE-291 Secondary ID (or DBN)
    m_checksum = pInData[totalBytes-1];     // Reported checksum
 
    //  Caller provides all of the "location" information as a default. If the packet header info is "real", overwrite it...
    m_location = inLocationInfo;
 
    if ((pInData[1] & 0x80) != 0)
    {
        m_coding            = ((pInData[1] & 0x40) == 0) ? AJAAncDataCoding_Digital : AJAAncDataCoding_Raw; // byte 1, bit 6
        m_location.SetDataStream(AJAAncDataStream_1); //    ??? GUMP doesn't tell us the data stream it came from
        m_location.SetDataChannel(((pInData[1] & 0x20) == 0) ? AJAAncDataChannel_C : AJAAncDataChannel_Y);      // byte 1, bit 5
        m_location.SetDataSpace(((pInData[1] & 0x10) == 0) ? AJAAncDataSpace_VANC : AJAAncDataSpace_HANC);      // byte 1, bit 4
        m_location.SetLineNumber(uint16_t((pInData[1] & 0x0F) << 7) + uint16_t(pInData[2] & 0x7F));                         // byte 1, bits 3:0 + byte 2, bits 6:0
        SetBufferFormat(AJAAncBufferFormat_SDI);
        //m_location.SetHorizontalOffset(hOffset);  //  ??? GUMP doesn't report the horiz offset of where the packet started in the raster line
    }
 
    //  Allocate space for the payload and copy it in...
    const uint32_t  payloadSize (pInData[5]);   //  DC: SMPTE-291 Data Count
    if (payloadSize)
    {
        status = AllocDataMemory(payloadSize);  //  NOTE:  This also sets my "DC" value
        if (AJA_SUCCESS(status))
            for (uint32_t ndx(0);  ndx < payloadSize;  ndx++)
                m_payload[ndx] = pInData[ndx+6];
    }
 
    outPacketByteCount = totalBytes;
    LOGMYDEBUG("Set from GUMP buffer OK: " << AsString(32));
    return status;
 
}   //  InitWithReceivedData
 
//**********
//  [Re]Initializes me from the buffer received from extractor (ingest)
AJAStatus AJAAncillaryData::InitAuxWithReceivedData (const uint8_t *    pInData,
                                                    const size_t        inMaxBytes,
                                                    uint32_t &          outPacketByteCount)
{
    AJAStatus status = AJA_STATUS_SUCCESS;
    Clear();
 
    // If all is well, pInData points to the beginning of an HDMI Aux packet:
    //
    //  pInData ->  0:  Packet Type     // 1st byte is Packet Type / HB0
    //              1:  Header Data1    // location data byte #1
    //              2:  Header Data2    // location data byte #2
    //              3-32: Payload
    //             ...    ...
    //
    // Note that this is the layout of the data as returned from the Aux Extractor hardware, and
    // is NOT exactly the same as the HDMI Specificaiton.  (Error checking bytes are omitted)
    //
    // The inMaxBytes input gives us an indication of how many "valid" bytes remain in the caller's TOTAL
    // ANC Data buffer. We use this as a sanity check to make sure we don't try to parse past the end
    // of the captured data.
    //
    //  Once the useful data has been copied from the packet buffer, we return the packet size,
    //  in bytes, so the caller can find the start of the next packet (if any).
 
    if (pInData == AJA_NULL)
    {
        outPacketByteCount = 0;
        LOGMYERROR("AJA_STATUS_NULL: NULL pointer");
        return AJA_STATUS_NULL;
    }
 
    // The first byte should be a recognized Aux Packet type. 
    // If it's not, we will assume we are at the end of the valid data
    if (!AuxPacketTypeIsValid(pInData[0]))  
    {
        //  Let the caller try to resynchronize...
        outPacketByteCount = 0;
        LOGMYDEBUG("No data:  First Aux byte " << xHEX0N(uint16_t(pInData[0]),2) << " is not a recognized type");
        return AJA_STATUS_SUCCESS;  //  Not necessarily an error (no data)
    }
 
    const uint32_t maxBytes(uint32_t(inMaxBytes+0));
    //  The minimum size for a packet (i.e. no payload) is 7 bytes
    if (maxBytes < AJAAuxillaryPacketSize)
    {
        outPacketByteCount = maxBytes;
        LOGMYERROR("AJA_STATUS_RANGE: Buffer size " << maxBytes << " smaller than " << AJAAuxillaryPacketSize << " bytes");
        return AJA_STATUS_RANGE;
    }
 
    //  There are enough bytes for a minimum packet!
 
    const uint32_t  totalBytes  (AJAAuxillaryPacketSize);
    //  There's enough data in the buffer to contain the packet, and everything else checks out,
    //  so continue parsing the data...
    m_auxType  = pInData[0];    //  HDMI Header Byte 0 / Packet Type
    m_auxHB1   = pInData[1];    //  HDMI Header Byte 1 / Header Data 1
    m_auxHB2   = pInData[2];    //  HDMI Header Byte 2 / Header Data 2
 
    //  HDMI Aux InfoFrames have a checksum and packet length specifier, while other packet types do not
    m_checksum = 0;
    uint32_t payloadSize(28);   //  HDMI Aux Maximum & Default payload
    int payloadOffset(3);       //  Packet payload normally starts at 4th byte
    if (m_auxType & 0x80)       //  InfoFrame?
    {                                           //  InfoFrames are special:
        m_checksum = pInData[3];                //  InfoFrame checksum is in 4th byte
        payloadSize =  m_auxHB2 & 0x0000001F;   //  InfoFrame payload size is in LS 5 bits of 3rd byte (HB2)
        payloadOffset = 4;                      //  InfoFrame payload starts at 5th byte
    }
 
    m_coding = AJAAncDataCoding_Digital;
    SetBufferFormat(AJAAncBufferFormat_HDMI);
 
    //  Allocate space for the payload and copy it in...
    if (payloadSize)
    {
        status = AllocDataMemory(payloadSize);  //  NOTE:  This also sets my "DC" value
        if (AJA_SUCCESS(status))
            for (uint32_t ndx(0);  ndx < payloadSize;  ndx++)
                m_payload[ndx] = pInData[ndx+payloadOffset];
    }
 
    outPacketByteCount = totalBytes;
    LOGMYDEBUG("Set from HDMI buffer OK: " << AsString(32));
    return status;
 
}   //  InitWithReceivedData
 
AJAStatus AJAAncillaryData::InitWithReceivedData (const ByteVector & inData, const AJAAncDataLoc & inLocationInfo)
{
    uint32_t    pktByteCount(0);
    if (inData.empty())
        return AJA_STATUS_NULL;
    return InitWithReceivedData (&inData[0], uint32_t(inData.size()), inLocationInfo, pktByteCount);
}
 
 
//**********
// This returns the number of bytes that will be returned by GenerateTransmitData(). This is usually
// called first so the caller can allocate a buffer large enough to hold the results.
 
AJAStatus AJAAncillaryData::GetRawPacketSize (uint32_t & outPacketSize) const
{
    outPacketSize = 0;
 
    if (m_coding == AJAAncDataCoding_Digital)
    {
        //  Normal, "digital" ancillary data (i.e. SMPTE-291 based) will have a total size of
        //  seven bytes (3 bytes header + DID + SID + DC + Checksum) plus the payload size...
        if (GetDC() <= 255)
            outPacketSize = GetDC() + AJAAncillaryDataWrapperSize;
        else
        {
            //  More than 255 bytes of payload is illegal  --  return 255 (truncated) to prevent generating a bad GUMP buffer...
            LOGMYWARN("Illegal packet size " << DEC(GetDC()) << ", exceeds 255 -- returning truncated value (255): " << AsString(32));
            outPacketSize = 255 + AJAAncillaryDataWrapperSize;
        }
    }
    else if (m_coding == AJAAncDataCoding_Raw)
    {
        //  Determine how many "packets" are needed to be generated in order to pass all of the payload data (max 255 bytes per packet)...
        if (!IsEmpty())
        {
            //  All "analog" packets will have a 255-byte payload, except for the last one...
            const uint32_t  numPackets  ((GetDC() + 254) / 255);
            const uint32_t  lastPacketDC    (GetDC() % 255);
 
            //  Each packet has a 7-byte "wrapper" + the payload size...
            outPacketSize =  ((numPackets - 1) * (255 + AJAAncillaryDataWrapperSize))   //  All packets except the last one have a payload of 255 bytes
                            + (lastPacketDC + AJAAncillaryDataWrapperSize);             //  The last packet carries the remainder
        }
    }
    else    // huh? (coding not set)
        return AJA_STATUS_FAIL;
    
    return AJA_STATUS_SUCCESS;
}
 
 
//**********
//  Writes my payload data into the given 8-bit GUMP buffer (playback)
 
AJAStatus AJAAncillaryData::GenerateTransmitData (uint8_t * pData, const size_t inMaxBytes, uint32_t & outPacketSize)
{
    AJAStatus status (GeneratePayloadData());
 
    outPacketSize = 0;
 
    //  Verify that the caller has allocated enough space to hold what's going to be generated
    uint32_t myPacketSize(0), maxBytes(uint32_t(inMaxBytes+0));
    GetRawPacketSize(myPacketSize);
 
    if (myPacketSize == 0)
    {
        LOGMYERROR("AJA_STATUS_FAIL: nothing to do -- raw packet size is zero: " << AsString(32));
        return AJA_STATUS_FAIL;
    }
    if (myPacketSize > maxBytes)
    {
        LOGMYERROR("AJA_STATUS_FAIL: " << maxBytes << "-byte client buffer too small to hold " << myPacketSize << " byte(s): " << AsString(32));
        return AJA_STATUS_FAIL;
    }
    if (!IsDigital() && !IsRaw())   //  Coding not set: don't generate anything
    {
        LOGMYERROR("AJA_STATUS_FAIL: invalid packet coding (neither Raw nor Digital): " << AsString(32));
        return AJA_STATUS_FAIL;
    }
 
    if (IsDigital())
    {
        pData[0] = GetGUMPHeaderByte1();
        pData[1] = GetGUMPHeaderByte2();
        pData[2] = GetGUMPHeaderByte3();
        pData[3] = m_DID;
        pData[4] = m_SID;
 
        uint8_t payloadSize = uint8_t((GetDC() > 255) ? 255 : GetDC()); //  Truncate payload to max 255 bytes
        pData[5] = payloadSize;
 
        //  Copy payload data to raw stream...
        status = GetPayloadData(&pData[6], payloadSize);
 
        //  NOTE:   The hardware automatically recalculates the checksum anyway, so this byte
        //          is ignored. However, if the original source had a checksum, we'll send it back...
        pData[6+payloadSize] = Calculate8BitChecksum();
 
        //  Done!
        outPacketSize = myPacketSize;
    }
    else if (IsRaw())
    {
        //  "Analog" or "raw" ancillary data is special in that it may generate multiple output packets,
        //  depending on the length of the payload data.
        //  NOTE:   This code assumes that zero-length payloads have already been screened out (in GetRawPacketSize)!
        const uint32_t  numPackets  ((GetDC() + 254) / 255);
 
        // all packets will have a 255-byte payload except the last one
        //Note: Unused --  uint32_t lastPacketDC = m_DC % 255;
 
        const uint8_t * payloadPtr = GetPayloadData();
        uint32_t remainingPayloadData = GetDC();
 
        for (uint32_t ndx(0);  ndx < numPackets;  ndx++)
        {
            pData[0] = GetGUMPHeaderByte1();
            pData[1] = GetGUMPHeaderByte2();
            pData[2] = GetGUMPHeaderByte3();
            pData[3] = m_DID;
            pData[4] = m_SID;
 
            uint8_t payloadSize = uint8_t((remainingPayloadData > 255) ? 255 : remainingPayloadData);   //  Truncate payload to max 255 bytes
            pData[5] = payloadSize;     //  DC
 
            //  Copy payload data into GUMP buffer...
            ::memcpy(&pData[6], payloadPtr, payloadSize);
 
            //  NOTE:   The hardware automatically recalculates the checksum anyway, so this byte
            //          is ignored. However, if the original source had a checksum we'll send it back...
            pData[6+payloadSize] = m_checksum;
 
            //  Advance the payloadPtr to the beginning of the next bunch of payload data...
            payloadPtr += payloadSize;
 
            //  Decrease the remaining data count...
            remainingPayloadData -= payloadSize;
 
            //  Advance the external data stream pointer to the beginning of the next packet...
            pData += (payloadSize + AJAAncillaryDataWrapperSize);
        }   //  for each raw packet
 
        outPacketSize = myPacketSize;   //  Done!
    }   //  else if IsRaw
    LOGMYDEBUG(outPacketSize << " byte(s) generated: " << AsString(32));
    return status;
 
}   //  GenerateTransmitData
 
 
uint8_t AJAAncillaryData::GetGUMPHeaderByte2 (void) const
{
    uint8_t result  (0x80); // LE bit is always active
 
    if (m_coding == AJAAncDataCoding_Raw)
        result |= 0x40;     // analog/raw (1) or digital (0) ancillary data
 
    if (m_location.IsLumaChannel())
        result |= 0x20;     // carried in Y (1) or C stream
 
    if (m_location.IsHanc())
        result |= 0x10;
 
    // ms 4 bits of line number
    result |= (m_location.GetLineNumber() >> 7) & 0x0F; // ms 4 bits [10:7] of line number
 
    return result;
}
 
 
AJAStatus AJAAncillaryData::GenerateTransmitData (UWordSequence & outRawComponents)
{
    AJAStatus                       status      (GeneratePayloadData());
    const UWordSequence::size_type  origSize    (outRawComponents.size());
 
    if (IsDigital())
    {
        try
        {
            const uint8_t   dataCount   ((GetDC() > 255) ? 255 : uint8_t(GetDC())); //  Truncate payload to max 255 bytes
            outRawComponents.push_back(0x000);                                          //  000
            outRawComponents.push_back(0x3FF);                                          //  3FF
            outRawComponents.push_back(0x3FF);                                          //  3FF
            outRawComponents.push_back(AddEvenParity(GetDID()));        //  DID
            outRawComponents.push_back(AddEvenParity(GetSID()));        //  SDID
            outRawComponents.push_back(AddEvenParity(dataCount));   //  DC
        }
        catch(...)
        {
            outRawComponents.resize(origSize);
            status = AJA_STATUS_MEMORY;
        }
    }
 
    //  Copy payload data into output vector...
    if (AJA_SUCCESS(status))
        status = GetPayloadData(outRawComponents, IsDigital() /* Add parity for Digital only */);   //  UDWs
 
    //  The hardware automatically recalcs the CS, but still needs to be there...
    if (AJA_SUCCESS(status) && IsDigital())
        outRawComponents.push_back(Calculate9BitChecksum());    //  CS
 
    if (AJA_SUCCESS(status))
        {LOGMYDEBUG((origSize ? "Appended " : "Generated ") << (outRawComponents.size() - origSize)  << " UWords from " << AsString(32) << endl << UWordSequence(outRawComponents));}
    else
        LOGMYERROR("Failed: " << ::AJAStatusToString(status) << ": origSize=" << origSize << ", " << AsString(32));
    return status;
}
 
 
//  These tables implement the 16-UDWs-per-20-bytes packing cadence:
static const size_t     gIndexes[]  =   {   0,1,2,3,    3,4,5,6,    6,7,8,9,    9,10,11,12, 12,13,14,15 };
static const unsigned   gShifts[]   =   {   22,12,2,8,  24,14,4,6,  26,16,6,4,  28,18,8,2,  30,20,10,0  };
static const uint32_t   gMasks[]    =   {   0xFFC00000, 0x003FF000, 0x00000FFC, 0x00000003,
                                            0xFF000000, 0x00FFC000, 0x00003FF0, 0x0000000F,
                                            0xFC000000, 0x03FF0000, 0x0000FFC0, 0x0000003F,
                                            0xF0000000, 0x0FFC0000, 0x0003FF00, 0x000000FF,
                                            0xC0000000, 0x3FF00000, 0x000FFC00, 0x000003FF  };
 
 
AJAStatus AJAAncillaryData::GenerateTransmitData (ULWordSequence & outData)
{
    AJAStatus                       status      (GeneratePayloadData());
    const ULWordSequence::size_type origSize    (outData.size());
    uint32_t                        u32         (0);    //  32-bit value
 
    if (!IsDigital())
        {XMT2110WARN("Analog/raw packet skipped/ignored: " << AsString(32));    return AJA_STATUS_SUCCESS;}
    if (GetDC() > 255)
        {XMT2110ERR("Data count exceeds 255: " << AsString(32));    return AJA_STATUS_RANGE;}
 
    //  Prepare an array of 10-bit DID/SID/DC/UDWs/CS values...
        const uint16_t  did (AddEvenParity(GetDID()));
        const uint16_t  sid (AddEvenParity(GetSID()));
        const uint16_t  dc  (AddEvenParity(uint8_t(GetDC())));
        const uint16_t  cs  (Calculate9BitChecksum());
 
        UWordSequence   UDW16s;     //  10-bit even-parity words
        UDW16s.reserve(GetDC()+4);  //  Reserve DID + SID + DC + UDWs + CS
        UDW16s.push_back(did);
        UDW16s.push_back(sid);
        UDW16s.push_back(dc);
 
        //  Append 8-bit payload data, converting into 10-bit values with even parity added...
        status = GetPayloadData(UDW16s, true);  //  Append 10-bit even-parity UDWs
        if (AJA_FAILURE(status))
            {XMT2110ERR("GetPayloadData failed: " << AsString(32)); return status;}
        UDW16s.push_back(cs);   //  Checksum is the caboose
    //  Done -- 10-bit DID/SID/DC/UDWs/CS array is prepared
    XMT2110DBG("From " << UWordSequence(UDW16s) << " " << AsString(32));
 
    //  Begin writing into "outData" array.
    //  My first 32-bit longword is the Anc packet header, which contains location info...
    const AJARTPAncPacketHeader pktHdr  (GetDataLocation());
    const uint32_t              pktHdrWord  (pktHdr.GetULWord());
    outData.push_back(pktHdrWord);
//  XMT2110DDBG("outU32s[" << DEC(outData.size()-1) << "]=" << xHEX0N(ENDIAN_32NtoH(pktHdrWord),8) << " (BigEndian)");  //  Byte-Swap it to make BigEndian look right
 
    //  All subsequent 32-bit longwords come from the array of 10-bit values I built earlier.
    const size_t    numUDWs (UDW16s.size());
    size_t          UDWndx  (0);
    u32 = 0;
    do
    {
        for (unsigned loopNdx(0);  loopNdx < sizeof(gIndexes) / sizeof(size_t);  loopNdx++)
        {
            const bool      is4th       ((loopNdx & 3) == 3);
            const size_t    ndx         (UDWndx + gIndexes[loopNdx]);
            const bool      isPastEnd   (ndx >= numUDWs);
            const uint32_t  UDW         (isPastEnd  ?  0  :  uint32_t(UDW16s[ndx]));
            const unsigned  shift       (gShifts[loopNdx]);
            const uint32_t  mask        (gMasks[loopNdx]);
//          if (!isPastEnd) XMT2110DDBG("u16s[" << DEC(ndx) << "]=" << xHEX0N(UDW,3));
            if (is4th)
            {
                u32 |=  (UDW >> shift) & mask;
                outData.push_back(ENDIAN_32HtoN(u32));
//              XMT2110DDBG("outU32s[" << DEC(outData.size()-1) << "]=" << xHEX0N(u32,8) << " (BigEndian)");
                u32 = 0;    //  Reset, start over
                if (isPastEnd)
                    break;  //  Done, 32-bit longword aligned
                continue;
            }
            //  Continue building this 32-bit longword...
            u32 |=  (UDW << shift) & mask;
        }   //  inner loop
        UDWndx += 16;
    } while (UDWndx < numUDWs);
 
    /*  The Pattern:  (unrolling the above loop):                                                       BitCnt      ShiftLeft   ShiftRight
    u32 =  (uint32_t(UDW16s.at( 0)) << 22) & 0xFFC00000;    //  0b00000|0x00|00: [ 0] all 10 bits       0+10=10     32-10=22
    u32 |= (uint32_t(UDW16s.at( 1)) << 12) & 0x003FF000;    //  0b00001|0x01|01: [ 1] all 10 bits       10+10=20    22-10=12
    u32 |= (uint32_t(UDW16s.at( 2)) <<  2) & 0x00000FFC;    //  0b00010|0x02|02: [ 2] all 10 bits       20+10=30    12-10=2
    u32 |= (uint32_t(UDW16s.at( 3)) >>  8) & 0x00000003;    //  0b00011|0x03|03: [ 3] first (MS 2 bits) 30+2=32                 10-2=8
    outData.push_back(ENDIAN_32HtoN(u32));
    u32 =  (uint32_t(UDW16s.at( 3)) << 24) & 0xFF000000;    //  0b00100|0x04|04: [ 3] last (LS 8 bits)  0+8=8       32-8=24
    u32 |= (uint32_t(UDW16s.at( 4)) << 14) & 0x00FFC000;    //  0b00101|0x05|05: [ 4] all 10 bits       8+10=18     24-10=14
    u32 |= (uint32_t(UDW16s.at( 5)) <<  4) & 0x00003FF0;    //  0b00110|0x06|06: [ 5] all 10 bits       18+10=28    14-10=4
    u32 |= (uint32_t(UDW16s.at( 6)) >>  6) & 0x0000000F;    //  0b00111|0x07|07: [ 6] first (MS 4 bits) 28+4=32                 10-4=6
    outData.push_back(ENDIAN_32HtoN(u32));
    u32 =  (uint32_t(UDW16s.at( 6)) << 26) & 0xFC000000;    //  0b01000|0x08|08: [ 6] last (LS 6 bits)  0+6=6       32-6=26
    u32 |= (uint32_t(UDW16s.at( 7)) << 16) & 0x03FF0000;    //  0b01001|0x09|09: [ 7] all 10 bits       6+10=16     26-10=16
    u32 |= (uint32_t(UDW16s.at( 8)) <<  6) & 0x0000FFC0;    //  0b01010|0x0A|10: [ 8] all 10 bits       16+10=26    16-10=6
    u32 |= (uint32_t(UDW16s.at( 9)) >>  4) & 0x0000003F;    //  0b01011|0x0B|11: [ 9] first (MS 6 bits) 26+6=32                 10-6=4
    outData.push_back(ENDIAN_32HtoN(u32));
    u32 =  (uint32_t(UDW16s.at( 9)) << 28) & 0xF0000000;    //  0b01100|0x0C|12: [ 9] last (LS 4 bits)  0+4=4       32-4=28
    u32 |= (uint32_t(UDW16s.at(10)) << 18) & 0x0FFC0000;    //  0b01101|0x0D|13: [10] all 10 bits       4+10=14     28-10=18
    u32 |= (uint32_t(UDW16s.at(11)) <<  8) & 0x0003FF00;    //  0b01110|0x0E|14: [11] all 10 bits       14+10=24    18-10=8
    u32 |= (uint32_t(UDW16s.at(12)) >>  2) & 0x000000FF;    //  0b01111|0x0F|15: [12] first (MS 8 bits) 24+8=32                 10-8=2
    outData.push_back(ENDIAN_32HtoN(u32));
    u32 =  (uint32_t(UDW16s.at(12)) << 30) & 0xC0000000;    //  0b10000|0x10|16: [12] last (LS 2 bits)  0+2=2       32-2=30
    u32 |= (uint32_t(UDW16s.at(13)) << 20) & 0x3FF00000;    //  0b10001|0x11|17: [13] all 10 bits       2+10=12     30-10=20
    u32 |= (uint32_t(UDW16s.at(14)) << 10) & 0x000FFC00;    //  0b10010|0x12|18: [14] all 10 bits       12+10=22    20-10=10
    u32 |= (uint32_t(UDW16s.at(15)) >>  0) & 0x000003FF;    //  0b10011|0x13|19: [15] all 10 bits       22+10=32                10-10=0
    outData.push_back(ENDIAN_32HtoN(u32));  */
 
#if defined(_DEBUG)
{
    ostringstream   oss;
    oss << (origSize ? "Appended " : "Generated ") << (outData.size() - origSize)  << " U32s:";
    for (size_t ndx(origSize);  ndx < outData.size();  ndx++)   //  outData is in Network Byte Order
        oss << " " << HEX0N(ENDIAN_32NtoH(outData[ndx]),8);     //  so byte-swap to make it look right in the log
    oss << " BigEndian from " << AsString(32);
    XMT2110DBG(oss.str());
}
#else
    XMT2110DBG((origSize ? "Appended " : "Generated ")
                    << (outData.size() - origSize)  << " 32-bit words from " << AsString(32));
#endif
    return AJA_STATUS_SUCCESS;
}   //  GenerateTransmitData
 
 
AJAStatus AJAAncillaryData::InitWithReceivedData (const ULWordSequence & inU32s, uint16_t & inOutU32Ndx, const bool inIgnoreChecksum)
{
    const size_t    numU32s (inU32s.size());
 
    Clear();    //  Reset me -- start over
 
    if (inOutU32Ndx >= numU32s)
        {RCV2110ERR("Index error: [" << DEC(inOutU32Ndx) << "] past end of [" << DEC(numU32s) << "] element buffer");  return AJA_STATUS_RANGE;}
 
    AJARTPAncPacketHeader   ancPktHeader;
    if (!ancPktHeader.ReadFromULWordVector(inU32s, inOutU32Ndx))
        {RCV2110ERR("AJARTPAncPacketHeader::ReadFromULWordVector failed at [" << DEC(inOutU32Ndx) << "]");  return AJA_STATUS_FAIL;}
 
    const AJAAncDataLoc dataLoc (ancPktHeader.AsDataLocation());
    RCV2110DDBG("u32=" << xHEX0N(ENDIAN_32NtoH(inU32s.at(inOutU32Ndx)),8) << " inU32s[" << DEC(inOutU32Ndx) << " of " << DEC(numU32s) << "] AncPktHdr: " << ancPktHeader << " -- AncDataLoc: " << dataLoc);
 
    if (++inOutU32Ndx >= numU32s)
        {RCV2110ERR("Index error: [" << DEC(inOutU32Ndx) << "] past end of [" << DEC(numU32s) << "] element buffer");  return AJA_STATUS_RANGE;}
 
    //  Set location info...
    AJAStatus result;
    result = SetLocationVideoLink(dataLoc.GetDataLink());
    if (AJA_FAILURE(result))    {RCV2110ERR("SetLocationVideoLink failed, dataLoc: " << dataLoc);   return result;}
 
    result = SetLocationDataStream(dataLoc.GetDataStream());
    if (AJA_FAILURE(result))    {RCV2110ERR("SetLocationDataStream failed, dataLoc: " << dataLoc);  return result;}
 
    result = SetLocationDataChannel(dataLoc.GetDataChannel());
    if (AJA_FAILURE(result))    {RCV2110ERR("SetLocationDataChannel failed, dataLoc: " << dataLoc); return result;}
 
    result = SetLocationHorizOffset(dataLoc.GetHorizontalOffset());
    if (AJA_FAILURE(result))    {RCV2110ERR("SetLocationHorizOffset failed, dataLoc: " << dataLoc); return result;}
 
    result = SetLocationLineNumber(dataLoc.GetLineNumber());
    if (AJA_FAILURE(result))    {RCV2110ERR("SetLocationLineNumber failed, dataLoc: " << dataLoc);  return result;}
 
    //  Unpack this anc packet...
    UWordSequence   u16s;   //  10-bit even-parity words
    bool            gotChecksum (false);
    size_t          dataCount   (0);
    uint32_t        u32         (ENDIAN_32NtoH(inU32s.at(inOutU32Ndx)));
    const size_t    startU32Ndx (inOutU32Ndx);
    RCV2110DDBG("u32=" << xHEX0N(u32,8) << " inU32s[" << DEC(inOutU32Ndx) << " of " << DEC(numU32s) << "]");
    do
    {
        uint16_t    u16 (0);
        for (unsigned loopNdx(0);  loopNdx < 20  &&  !gotChecksum;  loopNdx++)
        {
            const bool      is4th   ((loopNdx & 3) == 3);
            const bool      is1st   ((loopNdx & 3) == 0);
            const unsigned  shift   (gShifts[loopNdx]);
            const uint32_t  mask    (gMasks[loopNdx]);
            if (is4th)
            {
                u16 = uint16_t((u32 & mask) << shift);
 
                //  Grab next u32 value...
                if (++inOutU32Ndx >= numU32s)
                {
                    u16s.push_back(u16);    //  RCV2110DDBG("u16s[" << DEC(u16s.size()-1) << "]=" << xHEX0N(u16,3) << " (Past end)");
                    break;  //  Past end
                }
                u32 = ENDIAN_32NtoH(inU32s.at(inOutU32Ndx));
                RCV2110DDBG("u32=" << xHEX0N(u32,8) << " inU32s[" << DEC(inOutU32Ndx) << " of " << DEC(numU32s) << "], u16=" << xHEX0N(u16,3)
                            << " from " << DEC(loopNdx) << "(" << xHEX0N(inU32s.at(inOutU32Ndx-1),8) << " & " << xHEX0N(mask,8) << ") << " << DEC(shift));
                if (shift)
                    continue;   //  go around
            }
            else if (is1st)
            {
//              RCV2110DDBG("u16s[" << DEC(u16s.size()) << "]=" << xHEX0N(u16,3) << " | " << xHEX0N(uint16_t((u32 & mask) >> shift),3)
//                          << " = " << xHEX0N(u16 | uint16_t((u32 & mask) >> shift),3));
                u16 |= uint16_t((u32 & mask) >> shift);
            }
            else
            {
                u16 = uint16_t((u32 & mask) >> shift);
//              RCV2110DDBG("u16s[" << DEC(u16s.size()) << "]=" << xHEX0N(u16,3));
            }
            u16s.push_back(u16);    //  RCV2110DDBG("u16s[" << DEC(u16s.size()-1) << "]=" << xHEX0N(u16,3));
            switch(u16s.size())
            {
                case 1:     SetDID(uint8_t(u16));               break;  //  Got DID
                case 2:     SetSID(uint8_t(u16));               break;  //  Got SID
                case 3:     dataCount = size_t(u16 & 0x0FF);    break;  //  Got DC
                default:    if (u16s.size() == (dataCount + 4))
                                {gotChecksum = true; RCV2110DDBG("Got checksum, DC=" << xHEX0N(dataCount,2) << " CS=" << xHEX0N(u16s.back(),3));}   //  Got CS
                            break;
            }
        }   //  loop 20 times (or until gotChecksum)
        if (gotChecksum)
                break;
    } while (inOutU32Ndx < numU32s);
 
    if (u16s.size() < 4)
    {   ostringstream oss;
        if (u16s.size() < 1) oss << " NoDID";
        else oss << " DID=" << xHEX0N(UWord(GetDID()),2);
        if (u16s.size() < 2) oss << " NoSID";
        else oss << " SID=" << xHEX0N(UWord(GetSID()),2);
        if (u16s.size() < 3) oss << " NoDC";
        else oss << " DC=" << DEC(dataCount);
        RCV2110ERR("Incomplete/bad packet:" << oss.str() << " NoCS" << " -- only unpacked " << u16s);
        return AJA_STATUS_FAIL;
    }
    RCV2110DBG("Consumed " << DEC(inOutU32Ndx - startU32Ndx + 1) << " ULWord(s), " << (gotChecksum?"":"NoCS, ") << "DC=" << DEC(dataCount) << ", unpacked " << u16s);
    if (inOutU32Ndx < numU32s)
        inOutU32Ndx++;  //  Bump to next Anc packet, if any
 
    //  Did we get the whole packet?
    if (dataCount > (u16s.size()-3))        //  DC > (u16s.size minus DID, SID, DC)?
    {   //  Uh-oh:  too few u16s -- someone's pulling our leg
        RCV2110ERR("Incomplete/bad packet: " << DEC(u16s.size()) << " U16s, but missing " << DEC(dataCount - (u16s.size()-3))
                    << " byte(s), expected DC=" << DEC(dataCount) << " -- DID=" << xHEX0N(UWord(GetDID()),2) << " SID=" << xHEX0N(UWord(GetSID()),2));
        return AJA_STATUS_FAIL;
    }
 
    //  Copy in the Anc packet data, while stripping off parity...
    for (size_t ndx(0);  ndx < dataCount;  ndx++)
        m_payload.push_back(uint8_t(u16s.at(ndx+3)));
 
    result = SetChecksum(uint8_t(u16s.at(u16s.size()-1)), true /*validate*/);
    if (AJA_FAILURE(result))
    {
        if (inIgnoreChecksum)
            {RCV2110WARN("SetChecksum=" << xHEX0N(u16s.at(u16s.size()-1),3) << " failed, calculated=" << xHEX0N(Calculate9BitChecksum(),3));  result = AJA_STATUS_SUCCESS;}
        else
            {RCV2110ERR("SetChecksum=" << xHEX0N(u16s.at(u16s.size()-1),3) << " failed, calculated=" << xHEX0N(Calculate9BitChecksum(),3));  return result;}
    }
    SetBufferFormat(AJAAncBufferFormat_RTP);
    RCV2110DBG(AsString(64));
 
    /*  The Pattern:  (unrolling the above loop):
        u32 = ENDIAN_32NtoH(inU32s.at(0));
        u16  = uint16_t((u32 & 0xFFC00000) >> 22);      //  all 10 bits             0
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x003FF000) >> 12);      //  all 10 bits             1
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x00000FFC) >>  2);      //  all 10 bits             2
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x00000003) <<  8);      //  first (MS 2 bits)       3
 
        u32 = ENDIAN_32NtoH(inU32s.at(1));
        u16 |= uint16_t((u32 & 0xFF000000) >> 24);      //  last (LS 8 bits)        4
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x00FFC000) >> 14);      //  all 10 bits             5
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x00003FF0) >>  4);      //  all 10 bits             6
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x0000000F) <<  6);      //  first (MS 4 bits)       7
 
        u32 = ENDIAN_32NtoH(inU32s.at(2));
        u16 |= uint16_t((u32 & 0xFC000000) >> 26);      //  last (LS 6 bits)        8
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x03FF0000) >> 16);      //  all 10 bits             9
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x0000FFC0) >>  6);      //  all 10 bits             10
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x0000003F) <<  4);      //  first (MS 6 bits)       11
 
        u32 = ENDIAN_32NtoH(inU32s.at(3));
        u16 |= uint16_t((u32 & 0xF0000000) >> 28);      //  last (LS 4 bits)        12
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x0FFC0000) >> 18);      //  all 10 bits             13
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x0003FF00) >>  8);      //  all 10 bits             14
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x000000FF) <<  2);      //  first (MS 8 bits)       15
 
        u32 = ENDIAN_32NtoH(inU32s.at(4));
        u16 |= uint16_t((u32 & 0xC0000000) >> 30);      //  last (LS 2 bits)        16
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x3FF00000) >> 20);      //  all 10 bits             17
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x000FFC00) >> 10);      //  all 10 bits             18
        u16s.push_back(u16);
        u16  = uint16_t((u32 & 0x000003FF) >>  0);      //  all 10 bits             19
        u16s.push_back(u16);
*/
    return result;
}   //  InitWithReceivedData (const ULWordSequence&,uint16_t&)
 
 
static const string     gEmptyString;
 
 
const string & AJAAncDataLinkToString (const AJAAncDataLink inValue, const bool inCompact)
{
    static const string     gAncDataLinkToStr []            = {"A", "B", "?"};
    static const string     gDAncDataLinkToStr []           = {"AJAAncDataLink_A", "AJAAncDataLink_B", "AJAAncDataLink_Unknown"};
 
    return IS_VALID_AJAAncDataLink(inValue) ? (inCompact ? gAncDataLinkToStr[inValue] : gDAncDataLinkToStr[inValue]) : gAncDataLinkToStr[2];
}
 
 
const string &  AJAAncDataStreamToString (const AJAAncDataStream inValue, const bool inCompact)
{
    static const string     gAncDataStreamToStr []  = {"DS1", "DS2", "DS3", "DS4", "?"};
    static const string     gDAncDataStreamToStr [] = {"AJAAncDataStream_1", "AJAAncDataStream_2",
                                                        "AJAAncDataStream_3", "AJAAncDataStream_4", "AJAAncDataStream_Unknown"};
 
    return IS_VALID_AJAAncDataStream(inValue) ? (inCompact ? gAncDataStreamToStr[inValue] : gDAncDataStreamToStr[inValue]) : gEmptyString;
}
 
 
const string & AJAAncDataChannelToString (const AJAAncDataChannel inValue, const bool inCompact)
{
    static const string     gAncDataChannelToStr []     = {"C", "Y", "?"};
    static const string     gDAncDataChannelToStr []    = {"AJAAncDataChannel_C", "AJAAncDataChannel_Y", "AJAAncDataChannel_Unknown"};
 
    return IS_VALID_AJAAncDataChannel(inValue) ? (inCompact ? gAncDataChannelToStr[inValue] : gDAncDataChannelToStr[inValue]) : gEmptyString;
}
 
 
const string & AJAAncDataSpaceToString (const AJAAncDataSpace inValue, const bool inCompact)
{
    static const string     gAncDataSpaceToStr []   = {"VANC", "HANC", "????"};
    static const string     gDAncDataSpaceToStr []  = {"AJAAncDataSpace_VANC", "AJAAncDataSpace_HANC", "AJAAncDataSpace_Unknown"};
 
    return IS_VALID_AJAAncDataSpace(inValue) ? (inCompact ? gAncDataSpaceToStr[inValue] : gDAncDataSpaceToStr[inValue]) : gEmptyString;
}
 
 
string AJAAncLineNumberToString (const uint16_t inValue)
{
    ostringstream   oss;
    if (inValue == AJAAncDataLineNumber_AnyVanc)
        oss << "VANC";
    else if (inValue == AJAAncDataLineNumber_Anywhere)
        oss << "UNSP";  //  Unspecified -- anywhere
    else if (inValue == AJAAncDataLineNumber_Future)
        oss << "OVFL";  //  Overflow
    else if (inValue == AJAAncDataLineNumber_Unknown)
        oss << "UNKN";
    else
        oss << "L" << DEC(inValue);
    return oss.str();
}
 
 
string AJAAncHorizOffsetToString (const uint16_t inValue)
{
    ostringstream   oss;
    if (inValue == AJAAncDataHorizOffset_AnyHanc)
        oss << "HANC";
    else if (inValue == AJAAncDataHorizOffset_AnyVanc)
        oss << "VANC";
    else if (inValue == AJAAncDataHorizOffset_Anywhere)
        oss << "UNSP";
    else if (inValue == AJAAncDataHorizOffset_Future)
        oss << "OVFL";
    else if (inValue == AJAAncDataHorizOffset_Unknown)
        oss << "UNKN";
    else
        oss << "+" << DEC(inValue);
    return oss.str();
}
 
 
ostream & AJAAncDataLoc::Print (ostream & oss, const bool inCompact) const
{
    oss << ::AJAAncDataLinkToString(GetDataLink(), inCompact)
        << "|" << ::AJAAncDataStreamToString(GetDataStream(), inCompact)
        << "|" << ::AJAAncDataChannelToString(GetDataChannel(), inCompact)
        << "|" << ::AJAAncLineNumberToString(GetLineNumber())
        << "|" << ::AJAAncHorizOffsetToString(GetHorizontalOffset());
    return oss;
}
 
AJAStatus AJAAncDataLoc::Compare (const AJAAncDataLoc & inRHS) const
{
    //  Everything must match exactly:
    if (GetDataLink() != inRHS.GetDataLink())
        return AJA_STATUS_FAIL;
    if (GetDataStream() != inRHS.GetDataStream())
        return AJA_STATUS_FAIL;
    if (GetDataChannel() != inRHS.GetDataChannel())
        return AJA_STATUS_FAIL;
//  if (GetDataSpace() == inRHS.GetDataSpace())     //  No longer necessary
//      return AJA_STATUS_FAIL;
    if (GetLineNumber() != inRHS.GetLineNumber())
        return AJA_STATUS_FAIL;
    if (GetHorizontalOffset()  &&  inRHS.GetHorizontalOffset())
        if (GetHorizontalOffset() != inRHS.GetHorizontalOffset())
            return AJA_STATUS_FAIL;
    return AJA_STATUS_SUCCESS;
}
 
string AJAAncDataLoc::CompareWithInfo (const AJAAncDataLoc & inRHS) const
{
    ostringstream oss;
    if (GetDataLink() != inRHS.GetDataLink())
        oss << ", Link " << ::AJAAncDataLinkToString(GetDataLink()) << " != " << ::AJAAncDataLinkToString(inRHS.GetDataLink());
    if (GetDataStream() != inRHS.GetDataStream())
        oss << ", " << ::AJAAncDataStreamToString(GetDataStream()) << " != " << ::AJAAncDataStreamToString(inRHS.GetDataStream());
    if (GetDataChannel() != inRHS.GetDataChannel())
        oss << ", Data Channel " << ::AJAAncDataChannelToString(GetDataChannel()) << " != " << ::AJAAncDataChannelToString(inRHS.GetDataChannel());
//  if (GetDataSpace() == inRHS.GetDataSpace())     //  No longer necessary
//      oss << ", " << ::AJAAncDataSpaceToString(GetDataSpace()) << " != " << ::AJAAncDataSpaceToString(inRHS.GetDataSpace());
    if (GetLineNumber() != inRHS.GetLineNumber())
        oss << ", " << "Line " << DEC(GetLineNumber()) << " != " << DEC(inRHS.GetLineNumber());
    if (GetHorizontalOffset()  &&  inRHS.GetHorizontalOffset())
        if (GetHorizontalOffset() != inRHS.GetHorizontalOffset())
            oss << ", " << "HOffset " << DEC(GetHorizontalOffset()) << " != " << DEC(inRHS.GetHorizontalOffset());
 
    if (oss.str().length() > 2)
        return oss.str().substr(2, oss.str().length() - 2); //  remove first ", "
    return string();
}
 
 
string AJAAncDataLocToString (const AJAAncDataLoc & inValue, const bool inCompact)
{
    ostringstream   oss;
    inValue.Print(oss, inCompact);
    return oss.str();
}
 
ostream & operator << (ostream & inOutStream, const AJAAncDataLoc & inValue)
{
    return inValue.Print(inOutStream, true);
}
 
 
const string & AJAAncDataCodingToString (const AJAAncDataCoding inValue, const bool inCompact)
{
    static const string gAncDataCodingToStr []  = {"Dig", "Ana", "???"};
    static const string gDAncDataCodingToStr [] = {"AJAAncDataCoding_Digital", "AJAAncDataCoding_Raw", "AJAAncDataCoding_Unknown"};
 
    return IS_VALID_AJAAncDataCoding(inValue) ? (inCompact ? gAncDataCodingToStr[inValue] : gDAncDataCodingToStr[inValue]) : gEmptyString;
}
 
 
const string &  AJAAncBufferFormatToString (const AJAAncBufferFormat inValue, const bool inCompact)
{
    static const string gAncBufFmtToStr []  = {"UNK", "FBVANC", "SDI", "RTP", "HDMI", ""};
    static const string gDAncBufFmtToStr [] = {"AJAAncBufferFormat_Unknown", "AJAAncBufferFormat_FBVANC",
                                                "AJAAncBufferFormat_SDI", "AJAAncBufferFormat_RTP","AJAAncBufferFormat_HDMI", ""};
 
    return IS_VALID_AJAAncBufferFormat(inValue) ? (inCompact ? gAncBufFmtToStr[inValue] : gDAncBufFmtToStr[inValue]) : gEmptyString;
}
 
 
const string & AJAAncDataTypeToString (const AJAAncDataType inValue, const bool inCompact)
{
    static const string     gAncDataTypeToStr []            = { "Unknown", "SMPTE 2016-3 AFD", "SMPTE 12-M RP188", "SMPTE 12-M VITC",
                                                                "SMPTE 334 CEA708", "SMPTE 334 CEA608", "CEA608 Line21", "SMPTE 352 VPID",
                                                                "SMPTE 2051 2 Frame Marker", "524D Frame Status", "5251 Frame Status",
                                                                "HDR SDR", "HDR10", "HDR HLG", "HDMI Aux", "?"};
 
    static const string     gDAncDataTypeToStr []           = { "AJAAncDataType_Unknown", "AJAAncDataType_Smpte2016_3", "AJAAncDataType_Timecode_ATC",
                                                                "AJAAncDataType_Timecode_VITC", "AJAAncDataType_Cea708", "AJAAncDataType_Cea608_Vanc",
                                                                "AJAAncDataType_Cea608_Line21", "AJAAncDataType_Smpte352", "AJAAncDataType_Smpte2051",
                                                                "AJAAncDataType_FrameStatusInfo524D", "AJAAncDataType_FrameStatusInfo5251",
                                                                "AJAAncDataType_HDR_SDR", "AJAAncDataType_HDR_HDR10", "AJAAncDataType_HDR_HLG",
                                                                "AJAAncDataType_HDMI_Aux", "?"};
 
    return inValue < AJAAncDataType_Size ? (inCompact ? gAncDataTypeToStr[inValue] : gDAncDataTypeToStr[inValue]) : gEmptyString;
}
 
 
ostream & AJAAncillaryData::Print (ostream & oss, const bool inDumpPayload) const
{
    oss << "Type:\t\t"      << IDAsString()                                     << endl;
    if (!IsHDMI())
        oss << "DID:\t\t"   << xHEX0N(uint32_t(GetDID()),2) << endl
            << "SID:\t\t"   << xHEX0N(uint32_t(GetSID()),2) << endl;
    oss << "DC:\t\t"        << DEC(GetDC())                                     << endl;
    if (!IsHDMI())
        oss << "CS:\t\t"    << xHEX0N(uint32_t(m_checksum),2)                   << endl
            << "Loc:\t\t"   << GetDataLocation()                                << endl;
    oss << "Coding:\t\t"    << ::AJAAncDataCodingToString(m_coding)             << endl
        << "Frame:\t\t"     << xHEX0N(GetFrameID(),8)                           << endl
        << "Format:\t\t"    << ::AJAAncBufferFormatToString(GetBufferFormat())  << endl
        << "Valid:\t\t"     << (GotValidReceiveData() ? "Yes" : "No");
    if (inDumpPayload)
        {oss << endl;  DumpPayload(oss);}
    return oss;
}
 
string AJAAncillaryData::IDAsString (void) const
{
    ostringstream oss;
    if (IsRaw())
        oss << "Analog/Raw Line " << DEC(GetDataLocation().GetLineNumber()) << " Packet";
    else if (IsHDMI())
        oss << AuxPacketTypeToString(GetAuxType());
    else
        oss << DIDSIDToString(GetDID(), GetSID());
    return oss.str();
}
 
string AJAAncillaryData::AsString (const uint16_t inMaxBytes) const
{
    ostringstream oss;
    oss << "[" << ::AJAAncDataCodingToString(GetDataCoding());
    if (IsHDMI())
        oss << "|" << xHEX0N(uint16_t(GetAuxType()),2) 
            << HEX0N(uint16_t(GetAuxHB1()),2) 
            << HEX0N(uint16_t(GetAuxHB2()),2);
    else
        oss << "|" << ::AJAAncDataLocToString(GetDataLocation())
            << "|" << GetDIDSIDPair() << "|CS" << HEX0N(uint16_t(GetChecksum()),2);
    oss << "|DC=" << DEC(GetDC());
    if (m_frameID)
        oss << "|FRx" << HEX0N(GetFrameID(),8);
    if (IS_KNOWN_AJAAncBufferFormat(m_bufferFmt))
        oss << "|" << ::AJAAncBufferFormatToString(GetBufferFormat());
    const string typeStr (IsHDMI()  ?  AuxPacketTypeToString(GetAuxType())
                                    :   DIDSIDToString(GetDID(), GetSID()));
    if (!typeStr.empty())
        oss << "|" << typeStr;
    oss << "]";
    if (inMaxBytes  &&  GetDC())
    {
        uint16_t    bytesToDump = uint16_t(GetDC());
        oss << ": ";
        if (inMaxBytes < bytesToDump)
            bytesToDump = inMaxBytes;
        for (uint16_t ndx(0);  ndx < bytesToDump;  ndx++)
            oss << HEX0N(uint16_t(m_payload[ndx]),2);
        if (bytesToDump < uint16_t(GetDC()))
            oss << "...";   //  Indicate dump was truncated
    }
    return oss.str();
}
 
ostream & operator << (ostream & inOutStream, const AJAAncDIDSIDPair & inData)
{
    inOutStream << "x" << HEX0N(uint16_t(inData.first), 2) << "x" << HEX0N(uint16_t(inData.second), 2);
    return inOutStream;
}
 
ostream & AJAAncillaryData::DumpPayload (ostream & inOutStream) const
{
    if (IsEmpty())
        inOutStream << "(NULL payload)" << endl;
    else
    {
        const int32_t   kBytesPerLine   (32);
        uint32_t        count           (GetDC());
        const uint8_t * pData           (GetPayloadData());
 
        while (count)
        {
            const uint32_t numBytes ((count >= kBytesPerLine) ? kBytesPerLine : count);
            inOutStream << ((count == GetDC()) ? "Payload:  " : "          ");
            for (uint8_t num(0);  num < numBytes;  num++)
            {
                inOutStream << " " << HEX0N(uint32_t(pData[num]),2);
                if (num % 4 == 3)
                    inOutStream << " ";     // an extra space every four bytes for readability
            }
            inOutStream << endl;
            pData += numBytes;
            count -= numBytes;
        }   //  loop til break
    }
    return inOutStream;
}
 
 
AJAStatus AJAAncillaryData::Compare (const AJAAncillaryData & inRHS, const bool inIgnoreLocation, const bool inIgnoreChecksum) const
{
    if (GetDID() != inRHS.GetDID())
        return AJA_STATUS_FAIL;
    if (GetSID() != inRHS.GetSID())
        return AJA_STATUS_FAIL;
    if (GetDC() != inRHS.GetDC())
        return AJA_STATUS_FAIL;
 
    if (!inIgnoreChecksum)
        if (GetChecksum() != inRHS.GetChecksum())
            return AJA_STATUS_FAIL;
    if (!inIgnoreLocation)
        if (AJA_FAILURE(GetDataLocation().Compare(inRHS.GetDataLocation())))
            return AJA_STATUS_FAIL;
 
    if (GetDataCoding() != inRHS.GetDataCoding())
        return AJA_STATUS_FAIL;
 
    if (!IsEmpty())
        if (m_payload != inRHS.m_payload)
            return AJA_STATUS_FAIL;
 
    return AJA_STATUS_SUCCESS;
}
 
 
string AJAAncillaryData::CompareWithInfo (const AJAAncillaryData & inRHS, const bool inIgnoreLocation, const bool inIgnoreChecksum) const
{
    ostringstream oss;
    if (GetDID() != inRHS.GetDID())
        oss << endl << "DID mismatch: " << xHEX0N(uint16_t(GetDID()),2) << " != " << xHEX0N(uint16_t(inRHS.GetDID()),2);
    if (GetSID() != inRHS.GetSID())
        oss << endl << "SID mismatch: " << xHEX0N(uint16_t(GetSID()),2) << " != " << xHEX0N(uint16_t(inRHS.GetSID()),2);
    if (GetDC() != inRHS.GetDC())
        oss << endl << "DC mismatch: " << xHEX0N(GetDC(),4) << " != " << xHEX0N(inRHS.GetDC(),4);
 
    if (!inIgnoreChecksum)
        if (GetChecksum() != inRHS.GetChecksum())
            oss << endl << "CS mismatch: " << xHEX0N(uint16_t(GetChecksum()),2) << " != " << xHEX0N(uint16_t(inRHS.GetChecksum()),2);
    if (!inIgnoreLocation)
    {   const string info(GetDataLocation().CompareWithInfo(inRHS.GetDataLocation()));
        if (!info.empty())
            oss << endl << "Location mismatch: " << info;
    }
 
    if (GetDataCoding() != inRHS.GetDataCoding())
        oss << endl << "DataCoding mismatch: " << AJAAncDataCodingToString(GetDataCoding()) << " != " << AJAAncDataCodingToString(inRHS.GetDataCoding());
 
    if (!IsEmpty())
    {
        const uint8_t *pLHS(GetPayloadData()), *pRHS(inRHS.GetPayloadData());
        ULWordSequence diffNdxs;
        for (size_t ndx(0);  ndx < GetPayloadByteCount();  ndx++)
            if (pLHS[ndx] != pRHS[ndx])
                diffNdxs.push_back(ULWord(ndx));
        if (!diffNdxs.empty())
            oss << endl << DEC(diffNdxs.size()) << " of " << DEC(GetDC()) << " (" << fDEC(100.0*double(diffNdxs.size())/double(GetDC()), 5, 2)
                << "%) mismatched payload bytes, starting at offset " << DEC(diffNdxs.at(0));
    }
 
    if (oss.str().length() > sENDL)
        return oss.str().substr(sENDL, oss.str().length() - sENDL); //  remove leading newline
    return string();
}
 
AJAAncillaryData & AJAAncillaryData::operator = (const AJAAncillaryData & inRHS)
{
    if (this != &inRHS)
    {
        m_DID           = inRHS.m_DID;
        m_SID           = inRHS.m_SID;
        m_checksum      = inRHS.m_checksum;
        m_location      = inRHS.m_location;
        m_coding        = inRHS.m_coding;
        m_payload       = inRHS.m_payload;
        m_rcvDataValid  = inRHS.m_rcvDataValid;
        m_ancType       = inRHS.m_ancType;
        m_bufferFmt     = inRHS.m_bufferFmt;
        m_frameID       = inRHS.m_frameID;
        m_userData      = inRHS.m_userData;
 
        // HDMI Aux specific
        m_auxType = inRHS.m_auxType;
        m_auxHB1 = inRHS.m_auxHB1;
        m_auxHB2 = inRHS.m_auxHB2;
    }
    return *this;
}
 
bool AJAAncillaryData::operator == (const AJAAncillaryData & inRHS) const
{
    return AJA_SUCCESS(Compare(inRHS, false/*ignoreLocations*/, false/*ignoreChecksums*/));
}
 
 
//  Returns the original data byte in bits 7:0, plus even parity in bit 8 and ~bit 8 in bit 9
uint16_t AJAAncillaryData::AddEvenParity (const uint8_t inDataByte)
{
    // Parity Table
    static const uint16_t gEvenParityTable[256] =
    {
        /* 0-7 */       0x200,0x101,0x102,0x203,0x104,0x205,0x206,0x107,
        /* 8-15 */      0x108,0x209,0x20A,0x10B,0x20C,0x10D,0x10E,0x20F,
        /* 16-23 */     0x110,0x211,0x212,0x113,0x214,0x115,0x116,0x217,
        /* 24-31 */     0x218,0x119,0x11A,0x21B,0x11C,0x21D,0x21E,0x11F,
        /* 32-39 */     0x120,0x221,0x222,0x123,0x224,0x125,0x126,0x227,
        /* 40-47 */     0x228,0x129,0x12A,0x22B,0x12C,0x22D,0x22E,0x12F,
        /* 48-55 */     0x230,0x131,0x132,0x233,0x134,0x235,0x236,0x137,
        /* 56-63 */     0x138,0x239,0x23A,0x13B,0x23C,0x13D,0x13E,0x23F,
        /* 64-71 */     0x140,0x241,0x242,0x143,0x244,0x145,0x146,0x247,
        /* 72-79 */     0x248,0x149,0x14A,0x24B,0x14C,0x24D,0x24E,0x14F,
        /* 80-87 */     0x250,0x151,0x152,0x253,0x154,0x255,0x256,0x157,
        /* 88-95 */     0x158,0x259,0x25A,0x15B,0x25C,0x15D,0x15E,0x25F,
        /* 96-103 */    0x260,0x161,0x162,0x263,0x164,0x265,0x266,0x167,
        /* 104-111 */   0x168,0x269,0x26A,0x16B,0x26C,0x16D,0x16E,0x26F,
        /* 112-119 */   0x170,0x271,0x272,0x173,0x274,0x175,0x176,0x277,
        /* 120-127 */   0x278,0x179,0x17A,0x27B,0x17C,0x27D,0x27E,0x17F,
        /* 128-135 */   0x180,0x281,0x282,0x183,0x284,0x185,0x186,0x287,
        /* 136-143 */   0x288,0x189,0x18A,0x28B,0x18C,0x28D,0x28E,0x18F,
        /* 144-151 */   0x290,0x191,0x192,0x293,0x194,0x295,0x296,0x197,
        /* 152-159 */   0x198,0x299,0x29A,0x19B,0x29C,0x19D,0x19E,0x29F,
        /* 160-167 */   0x2A0,0x1A1,0x1A2,0x2A3,0x1A4,0x2A5,0x2A6,0x1A7,
        /* 168-175 */   0x1A8,0x2A9,0x2AA,0x1AB,0x2AC,0x1AD,0x1AE,0x2AF,
        /* 176-183 */   0x1B0,0x2B1,0x2B2,0x1B3,0x2B4,0x1B5,0x1B6,0x2B7,
        /* 184-191 */   0x2B8,0x1B9,0x1BA,0x2BB,0x1BC,0x2BD,0x2BE,0x1BF,
        /* 192-199 */   0x2C0,0x1C1,0x1C2,0x2C3,0x1C4,0x2C5,0x2C6,0x1C7,
        /* 200-207 */   0x1C8,0x2C9,0x2CA,0x1CB,0x2CC,0x1CD,0x1CE,0x2CF,
        /* 208-215 */   0x1D0,0x2D1,0x2D2,0x1D3,0x2D4,0x1D5,0x1D6,0x2D7,
        /* 216-223 */   0x2D8,0x1D9,0x1DA,0x2DB,0x1DC,0x2DD,0x2DE,0x1DF,
        /* 224-231 */   0x1E0,0x2E1,0x2E2,0x1E3,0x2E4,0x1E5,0x1E6,0x2E7,
        /* 232-239 */   0x2E8,0x1E9,0x1EA,0x2EB,0x1EC,0x2ED,0x2EE,0x1EF,
        /* 240-247 */   0x2F0,0x1F1,0x1F2,0x2F3,0x1F4,0x2F5,0x2F6,0x1F7,
        /* 248-255 */   0x1F8,0x2F9,0x2FA,0x1FB,0x2FC,0x1FD,0x1FE,0x2FF
    };  //  gEvenParityTable
    return gEvenParityTable[inDataByte];
}
 
 
string AncChannelSearchSelectToString (const AncChannelSearchSelect inSelect, const bool inCompact)
{
    switch (inSelect)
    {
        case AncChannelSearch_Y:    return inCompact ? "Y"   : "AncChannelSearch_Y";
        case AncChannelSearch_C:    return inCompact ? "C"   : "AncChannelSearch_C";
        case AncChannelSearch_Both: return inCompact ? "Y+C" : "AncChannelSearch_Both";
        default:                    break;
    }
    return "";
}
 
 
static bool CheckAncParityAndChecksum (const AJAAncillaryData::U16Packet &  inYUV16Line,
                                        const uint16_t      inStartIndex,
                                        const uint16_t      inTotalCount,
                                        const uint16_t      inIncrement = 2)
{
    bool    bErr    (false);
    UWord   ndx     (0);
    if (inIncrement == 0  ||  inIncrement > 2)
        return true;    //  Increment must be 1 or 2
 
    //  Check parity on all words...
    for (ndx = 3;  ndx < inTotalCount - 1;  ndx++)  //  Skip ANC Data Flags and Checksum
    {
        const UWord wordValue   (inYUV16Line[inStartIndex + ndx * inIncrement]);
        if (wordValue != AJAAncillaryData::AddEvenParity(wordValue & 0xFF))
        {
            LOGMYERROR ("Parity error at word " << ndx << ":  got " << xHEX0N(wordValue,2)
                        << ", expected " << xHEX0N(AJAAncillaryData::AddEvenParity(wordValue & 0xFF),2));
            bErr = true;
        }
    }
 
    //  The checksum word is different: bit 8 is part of the checksum total, and bit 9 should be ~bit 8...
    const UWord checksum    (inYUV16Line [inStartIndex + (inTotalCount - 1) * inIncrement]);
    const bool  b8          ((checksum & BIT(8)) != 0);
    const bool  b9          ((checksum & BIT(9)) != 0);
    if (b8 == b9)
    {
        LOGMYERROR ("Checksum word error:  got " << xHEX0N(checksum,2) << ", expected " << xHEX0N(checksum ^ 0x200, 2));
        bErr = true;
    }
 
    //  Check the checksum math...
    UWord   sum (0);
    for (ndx = 3;  ndx < inTotalCount - 1;  ndx++)
        sum += inYUV16Line [inStartIndex + ndx * inIncrement] & 0x1FF;
 
    if ((sum & 0x1FF) != (checksum & 0x1FF))
    {
        LOGMYERROR ("Checksum math error:  got " << xHEX0N(checksum & 0x1FF, 2) << ", expected " << xHEX0N(sum & 0x1FF, 2));
        bErr = true;
    }
 
    return bErr;
 
}   //  CheckAncParityAndChecksum
 
 
bool AJAAncillaryData::GetAncPacketsFromVANCLine (const UWordSequence &             inYUV16Line,
                                                    const AncChannelSearchSelect    inChanSelect,
                                                    U16Packets &                    outRawPackets,
                                                    UWordSequence &                 outWordOffsets)
{
    const UWord wordCountMax    (UWord(inYUV16Line.size ()));
 
    //  If we're only looking at Y samples, start the search 1 word into the line...
    const UWord searchOffset    (inChanSelect == AncChannelSearch_Y ? 1 : 0);
 
    //  If we're looking in both channels (e.g. SD video), increment search words by 1, else skip at every other word...
    const UWord searchIncr      (inChanSelect == AncChannelSearch_Both ? 1 : 2);
 
    outRawPackets.clear();
    outWordOffsets.clear();
 
    if (!IS_VALID_AncChannelSearchSelect(inChanSelect))
        {LOGMYERROR("Bad search select value " << DEC(inChanSelect)); return false;}    //  bad search select
    if (wordCountMax < 12)
        {LOGMYERROR("UWordSequence size " << DEC(wordCountMax) << " too small"); return false;} //  too small
 
    for (UWord wordNum = searchOffset;  wordNum < (wordCountMax - 12);  wordNum += searchIncr)
    {
        const UWord ancHdr0 (inYUV16Line.at (wordNum + (0 * searchIncr)));  //  0x000
        const UWord ancHdr1 (inYUV16Line.at (wordNum + (1 * searchIncr)));  //  0x3ff
        const UWord ancHdr2 (inYUV16Line.at (wordNum + (2 * searchIncr)));  //  0x3ff
        const UWord ancHdr3 (inYUV16Line.at (wordNum + (3 * searchIncr)));  //  DID
        const UWord ancHdr4 (inYUV16Line.at (wordNum + (4 * searchIncr)));  //  SDID
        const UWord ancHdr5 (inYUV16Line.at (wordNum + (5 * searchIncr)));  //  DC
        if (ancHdr0 == 0x000  &&  ancHdr1 == 0x3ff  &&  ancHdr2 == 0x3ff)
        {
            //  Total words in ANC packet: 6 header words + data count + checksum word...
            UWord   dataCount   (ancHdr5 & 0xFF);
            UWord   totalCount  (6  +  dataCount  +  1);
 
            if (totalCount > wordCountMax)
            {
                totalCount = wordCountMax;
                LOGMYERROR ("packet totalCount " << totalCount << " exceeds max " << wordCountMax);
                return false;
            }
 
            //  Be sure we don't go past the end of the line buffer...
            if (ULWord (wordNum + totalCount) >= wordCountMax)
            {
                LOGMYDEBUG ("past end of line: " << wordNum << " + " << totalCount << " >= " << wordCountMax);
                return false;   //  Past end of line buffer
            }
 
            if (CheckAncParityAndChecksum (inYUV16Line, wordNum, totalCount, searchIncr))
                return false;   //  Parity/Checksum error
 
            U16Packet   packet;
            for (unsigned i = 0;  i < totalCount;  i++)
                packet.push_back (inYUV16Line.at (wordNum + (i * searchIncr)));
            outRawPackets.push_back (packet);
            outWordOffsets.push_back (wordNum);
 
            LOGMYINFO ("Found ANC packet in " << ::AncChannelSearchSelectToString(inChanSelect)
                            << ": DID=" << xHEX0N(ancHdr3,4)
                            << " SDID=" << xHEX0N(ancHdr4,4)
                            << " word=" << wordNum
                            << " DC=" << ancHdr5
                            << " pix=" << (wordNum / searchIncr));
        }   //  if ANC packet found (wildcard or matching DID/SDID)
    }   //  scan the line
 
    return true;
 
}   //  GetAncPacketsFromVANCLine
 
 
bool AJAAncillaryData::Unpack8BitYCbCrToU16sVANCLine (const void * pInYUV8Line,
                                                        UWordSequence & outU16YUVLine,
                                                        const uint32_t inNumPixels)
{
    const UByte *   pInYUV8Buffer   (reinterpret_cast <const UByte *> (pInYUV8Line));
    const ULWord    maxOutElements  (inNumPixels * 2);
 
    outU16YUVLine.clear ();
    outU16YUVLine.reserve (maxOutElements);
    while (outU16YUVLine.size() < size_t(maxOutElements))
        outU16YUVLine.push_back(0);
 
    if (!pInYUV8Buffer)
        {LOGMYERROR("NULL/empty YUV8 buffer");  return false;}  //  NULL pointer
    if (inNumPixels < 12)
        {LOGMYERROR("width in pixels " << DEC(inNumPixels) << " too small (< 12)"); return false;}  //  Invalid width
    if (inNumPixels % 4)    //  6)?
        {LOGMYERROR("width in pixels " << DEC(inNumPixels) << " not multiple of 4"); return false;} //  Width not evenly divisible by 4
 
    //  Since Y and C may have separate/independent ANC data going on, we're going to split the task and do all
    //  the even (C) samples first, the come back and repeat it for all of the odd (Y) samples...
    for (ULWord comp = 0;  comp < 2;  comp++)
    {
        bool    bNoMoreAnc  (false);    //  Assume all ANC packets (if any) begin at the first pixel and are contiguous
                                        //  (i.e. no gaps between Anc packets). Once a "gap" is seen, this flag is set,
                                        //  and the rest of the line turns into a copy.
 
        ULWord  ancCount    (0);        //  Number of bytes to shift and copy (once an ANC packet is found).
                                        //  0 == at the start of a potential new Anc packet.
 
        ULWord  pixNum      (0);        //  The current pixel being inspected (note: NOT the component or sample number!)
        UWord   checksum    (0);        //  Accumulator for checksum calculations
 
        while (pixNum < inNumPixels)
        {
            if (bNoMoreAnc)
            {   //  NoMoreAnc -- there's a gap in the Anc data -- which is assumed to mean there are no more packets on this line.
                //  Just do a simple 8-bit -> 10-bit expansion with the remaining data on the line...
                const ULWord    index       (2 * pixNum  +  comp);
                const UWord     dataValue   (UWord(UWord(pInYUV8Buffer[index]) << 2));  //  Pad 2 LSBs with zeros
 
                NTV2_ASSERT (index <= ULWord(outU16YUVLine.size()));
                if (index < ULWord(outU16YUVLine.size()))
                    outU16YUVLine[index] = dataValue;
                else
                    outU16YUVLine.push_back(dataValue);
                pixNum++;
            }
            else
            {   //  Still processing (possible) Anc data...
                if (ancCount == 0)
                {   //  AncCount == 0 means we're at the beginning of an Anc packet -- or not...
                    if ((pixNum + 7) < inNumPixels)
                    {   //  An Anc packet has to be at least 7 pixels long to be real...
                        if (   pInYUV8Buffer [2*(pixNum+0) + comp] == 0x00
                            && pInYUV8Buffer [2*(pixNum+1) + comp] == 0xFF
                            && pInYUV8Buffer [2*(pixNum+2) + comp] == 0xFF)
                        {   //  "00-FF-FF" means a new Anc packet is being started...
                            //  Stuff "000-3FF-3FF" into the output buffer...
                            outU16YUVLine [2*pixNum++  + comp] = 0x000;
                            outU16YUVLine [2*pixNum++  + comp] = 0x3ff;
                            outU16YUVLine [2*pixNum++  + comp] = 0x3ff;
 
                            ancCount = pInYUV8Buffer[2*(pixNum+2) + comp] + 3 + 1;  //  Number of data words + DID + SID + DC + checksum
                            checksum = 0;                                           //  Reset checksum accumulator
                        }
                        else
                            bNoMoreAnc = true;  //  No anc here -- assume there's no more for the rest of the line
                    }
                    else
                        bNoMoreAnc = true;  //  Not enough room for another anc packet here -- assume no more for the rest of the line
                }   //  if ancCount == 0
                else if (ancCount == 1)
                {   //  This is the last byte of an anc packet -- the checksum. Since the original conversion to 8 bits
                    //  wiped out part of the original checksum, we've been recalculating it all along until now...
                    outU16YUVLine [2*pixNum + comp]  = checksum & 0x1ff;            //  LS 9 bits of checksum
                    outU16YUVLine [2*pixNum + comp] |= (~checksum & 0x100) << 1;    //  bit 9 = ~bit 8;
 
                    pixNum++;
                    ancCount--;
                }   //  else if end of valid Anc packet
                else
                {   //  ancCount > 0 means an Anc packet is being processed.
                    //  Copy 8-bit data into LS 8 bits, add even parity to bit 8, and ~bit 8 to bit 9...
                    const UByte ancByte (pInYUV8Buffer [2*pixNum + comp]);
                    const UWord ancWord (AddEvenParity (ancByte));
 
                    outU16YUVLine [2*pixNum + comp] = ancWord;
 
                    checksum += (ancWord & 0x1ff);  //  Add LS 9 bits to checksum
 
                    pixNum++;
                    ancCount--;
                }   //  else copying actual Anc packet
            }   //  else processing an Anc packet
        }   //  for each pixel in the line
    }   //  for each Y/C component (channel)
 
    return true;
}   //  Unpack8BitYCbCrToU16sVANCLine
 
 
bool AJAAncillaryData::Unpack8BitYCbCrToU16sVANCLineSD (const void * pInYUV8Line,
                                                        UWordSequence & outU16YUVLine,
                                                        const uint32_t inNumPixels)
{
    const UByte * pInYUV8Buffer (reinterpret_cast<const UByte*>(pInYUV8Line));
    const ULWord  maxNumElements(inNumPixels * 2);
 
    outU16YUVLine.clear ();
    outU16YUVLine.reserve (maxNumElements);
    while (outU16YUVLine.size() < size_t(maxNumElements))
        outU16YUVLine.push_back(0);
 
    if (!pInYUV8Buffer)
        {LOGMYERROR("NULL/empty YUV8 buffer");  return false;}  //  NULL pointer
    if (inNumPixels < 12)
        {LOGMYERROR("width in pixels " << DEC(inNumPixels) << " too small (< 12)"); return false;}  //  Invalid width
    if (inNumPixels % 4)
        {LOGMYERROR("width in pixels " << DEC(inNumPixels) << " not multiple of 4"); return false;} //  Width not evenly divisible by 4
 
    //  In SD, anc data appears in both Y & C...
    bool bNoMoreAnc(false); //  Assume all ANC packets (if any) begin at the first pixel
                            //  and are contiguous (i.e. no gaps between packets). Once a
                            //  "gap" is seen, this flag is set, and the rest of the line
                            //  is simply copied.
    ULWord ancCount(0); //  Number of bytes to shift and copy (once an ANC packet is
                        //  found).  Zero at the start of a potential new Anc packet.
    ULWord ndx(0);      //  The current pixel being inspected
    UWord  checksum(0); //  Accumulator for checksum calculations
 
    while (ndx < maxNumElements)
    {
        if (bNoMoreAnc)
        {   //  NoMoreAnc -- there's a gap in the Anc data -- which is assumed to mean there are
            //  no more packets on this line.  Just do a simple 8-bit -> 10-bit expansion with the
            //  remaining data on the line...
            const UWord dataValue (UWord(UWord(pInYUV8Buffer[ndx]) << 2));  //  Pad 2 LSBs with zeros
            NTV2_ASSERT (ndx <= ULWord(outU16YUVLine.size()));
            if (ndx < ULWord(outU16YUVLine.size()))
                outU16YUVLine[ndx] = dataValue;
            else
                outU16YUVLine.push_back(dataValue);
            ndx++;
        }
        else
        {   //  Still processing (possible) Anc data...
            if (ancCount == 0)
            {   //  AncCount == 0 means we're at the beginning of an Anc packet -- or not...
                if ((ndx + 7) < maxNumElements)
                {   //  An Anc packet has to be at least 7 pixels long to be real...
                    if (   pInYUV8Buffer [ndx+0] == 0x00
                        && pInYUV8Buffer [ndx+1] == 0xFF
                        && pInYUV8Buffer [ndx+2] == 0xFF)
                    {   //  "00-FF-FF" means a new Anc packet is being started...
                        //  Stuff "000-3FF-3FF" into the output buffer...
                        outU16YUVLine [ndx++] = 0x000;
                        outU16YUVLine [ndx++] = 0x3ff;
                        outU16YUVLine [ndx++] = 0x3ff;
                        ancCount = pInYUV8Buffer[ndx+2] + 3 + 1;    //  Number of data words + DID + SID + DC + checksum
                        checksum = 0;                               //  Reset checksum accumulator
                    }
                    else
                        bNoMoreAnc = true;  //  No anc here -- assume there's no more for the rest of the line
                }
                else
                    bNoMoreAnc = true;  //  Not enough room for another anc packet here -- assume no more for the rest of the line
            }   //  if ancCount == 0
            else if (ancCount == 1)
            {   //  This is the last byte of an anc packet -- the checksum. Since the original conversion to 8 bits
                //  wiped out part of the original checksum, we've been recalculating it all along until now...
                outU16YUVLine[ndx] = checksum & 0x1ff;          //  LS 9 bits of checksum
                outU16YUVLine[ndx] |= (~checksum & 0x100) << 1; //  bit 9 = ~bit 8;
                ndx++;
                ancCount--;
            }   //  else if end of valid Anc packet
            else
            {   //  ancCount > 0 means an Anc packet is being processed.
                //  Copy 8-bit data into LS 8 bits, add even parity to bit 8, and ~bit 8 to bit 9...
                const UByte ancByte (pInYUV8Buffer[ndx]);
                const UWord ancWord (AddEvenParity(ancByte));
                outU16YUVLine[ndx] = ancWord;
                checksum += (ancWord & 0x1ff);  //  Add LS 9 bits to checksum
                ndx++;
                ancCount--;
            }   //  else copying actual Anc packet
        }   //  else processing an Anc packet
    }   //  for each byte in the line
    return true;
}   //  Unpack8BitYCbCrToU16sVANCLineSD
 
 
void AJAAncillaryData::GetInstanceCounts (uint32_t & outConstructed, uint32_t & outDestructed)
{
#if defined(_DEBUG)
    outConstructed = gConstructCount;
    outDestructed = gDestructCount;
#else
    outConstructed = outDestructed = 0;
#endif
}
 
void AJAAncillaryData::ResetInstanceCounts (void)
{
#if defined(_DEBUG)
    gConstructCount = gDestructCount = 0;
#endif
}
 
uint32_t AJAAncillaryData::GetNumActiveInstances (void)
{
#if defined(_DEBUG)
    return gConstructCount - gDestructCount;
#else
    return 0;
#endif
}
 
uint32_t AJAAncillaryData::GetNumConstructed (void)
{
#if defined(_DEBUG)
    return gConstructCount;
#else
    return 0;
#endif
}
 
uint32_t AJAAncillaryData::GetNumDestructed (void)
{
#if defined(_DEBUG)
    return gDestructCount;
#else
    return 0;
#endif
}
 
typedef map<uint8_t, string>    DIDToStringMap;
typedef DIDToStringMap::const_iterator  DIDToStringMapCI;
typedef pair<uint8_t, string>   DIDToStringPair;
typedef map<AJAAncDIDSIDPair, string>   DIDSIDToStringMap;
typedef DIDSIDToStringMap::const_iterator   DIDSIDToStringMapCI;
typedef pair<AJAAncDIDSIDPair, string>  DIDSIDToStringPair;
static AJALock              sDIDToStringLock;
static DIDToStringMap       sDIDToStringMap;
static DIDSIDToStringMap    sDIDSIDToStringMap;
 
string AJAAncillaryData::DIDSIDToString (const uint8_t inDID, const uint8_t inSID)
{
    AJAAutoLock tmp(&sDIDToStringLock);
    if (sDIDSIDToStringMap.empty())
    {
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x08,0x08), "SMPTE-291 Control Packet"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x40,0x01), "RP-305 SDTI Header Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x40,0x02), "RP-348 HD-SDTI Header Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x40,0x04), "SMPTE-427 Link Encryp Key Msg 1"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x40,0x05), "SMPTE-427 Link Encryp Key Msg 2"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x40,0x06), "SMPTE-427 Link Encryp MetaD"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x41,0x01), "SMPTE-352M Payload ID"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x41,0x05), "SMPTE-2016-3 ADF/Bar Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x41,0x06), "SMPTE-2016-4 Pan & Scan Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x41,0x07), "SMPTE-2010 ANSI/SCTE 104 Msgs"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x41,0x08), "SMPTE-2031 DVB/SCTE VBI Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x43,0x01), "BT.1685 Inter-Station Ctrl Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x43,0x02), "RDD08/OP-47 Teletext Subtitling"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x43,0x03), "RDD08/OP-47 VANC Multipacket"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x43,0x04), "ARIB TR-B29 AV Sig Error Mon MetaD"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x43,0x05), "RDD18 Camera Params"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x44,0x04), "RP-214 KLV-Encoded MetaData"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x44,0x14), "RP-214 KLV-Encoded MetaData"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x44,0x44), "RP-223 UMID & Prog ID Label Data"));
        for (uint8_t sid(1);  sid < 0x0A;  sid++)
            sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x45,sid), "RP-2020 Compr/Dolby Aud MetaD"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x50,0x01), "RDD08 WSS Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x50,0x51), "CineLink-2 Link Encryp MetaD"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x51,0x01), "RP-215 Film Transfer Info"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x51,0x02), "RDD-18 Cam Param MetaD Set Acq"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x5F,0xDF), "ARIB STD-B37 HD Captions"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x5F,0xDE), "ARIB STD-B37 SD Captions"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x5F,0xDD), "ARIB STD-B37 Analog Captions"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x5F,0xDC), "ARIB STD-B37 Mobile Captions"));
        for (uint8_t sid(0xD0);  sid < 0xE0;  sid++)
            sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x5F,sid), "ARIB STD-B37 ??? Captions"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x60,0x60), "SMPTE-12M ATC Timecode"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x61,0x01), "SMPTE-334 HD CEA-708 CC"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x61,0x02), "SMPTE-334 SD CEA-608 CC"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x62,0x01), "RP-207 DTV Program Desc"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x62,0x02), "SMPTE-334 Data Broadcast"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x62,0x03), "RP-208 VBI Data"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x64,0x64), "RP-196 LTC in HANC (Obs)"));
        sDIDSIDToStringMap.insert(DIDSIDToStringPair(AJAAncDIDSIDPair(0x64,0x7F), "RP-196 VITC in HANC (Obs)"));
    }
    if (sDIDToStringMap.empty())
    {
        sDIDToStringMap.insert(DIDToStringPair(0x00, "SMPTE-291 Control Packet"));
        sDIDToStringMap.insert(DIDToStringPair(0x08, "SMPTE-291 Ctrl Pkt"));
        sDIDToStringMap.insert(DIDToStringPair(0x40, "RP-305 SDTI / RP-348 HD-SDTI / SMPTE-427 Link Encrypt"));
        sDIDToStringMap.insert(DIDToStringPair(0x41, "SMPTE-352M / SMPTE-2016 / SMPTE-2010 / SMPTE-2031"));
        sDIDToStringMap.insert(DIDToStringPair(0x43, "BT.1685 / RDD08/OP-47 / ARIB TR-B29 / RDD18"));
        sDIDToStringMap.insert(DIDToStringPair(0x44, "RP-214 KLV / RP-223 UMID+ProgramID Labels"));
        sDIDToStringMap.insert(DIDToStringPair(0x45, "RP-2020 Compressed/Dolby Audio"));
        sDIDToStringMap.insert(DIDToStringPair(0x50, "RDD08 WSS Data / CineLink-2 Link Encryption"));
        sDIDToStringMap.insert(DIDToStringPair(0x51, "RP-215 Film Xfer Info / RDD-18 Camera Params"));
        sDIDToStringMap.insert(DIDToStringPair(0x5F, "ARIB STD-B37 Captions"));
        sDIDToStringMap.insert(DIDToStringPair(0x60, "SMPTE-12M ATC Timecode"));
        sDIDToStringMap.insert(DIDToStringPair(0x61, "SMPTE-334 Captions"));
        sDIDToStringMap.insert(DIDToStringPair(0x62, "RP-207 DTV Prog / SMPTE-334 Data / RP-208 VBI"));
        sDIDToStringMap.insert(DIDToStringPair(0x64, "RP-196 LTC/VITC in HANC"));
        sDIDToStringMap.insert(DIDToStringPair(0x80, "SMPTE-291 Ctrl Pkt 'Marked for Deletion'"));
        sDIDToStringMap.insert(DIDToStringPair(0x84, "SMPTE-291 Ctrl Pkt 'End Marker'"));
        sDIDToStringMap.insert(DIDToStringPair(0x88, "SMPTE-291 Ctrl Pkt 'Start Marker'"));
        sDIDToStringMap.insert(DIDToStringPair(0xA0, "SMPTE-299M 3G HD Audio Ctrl Grp8 (Ch 29-32)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA1, "SMPTE-299M 3G HD Audio Ctrl Grp7 (Ch 25-28)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA2, "SMPTE-299M 3G HD Audio Ctrl Grp6 (Ch 21-24)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA3, "SMPTE-299M 3G HD Audio Ctrl Grp5 (Ch 17-20)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA4, "SMPTE-299M 3G HD Audio Data Grp8 (Ch 29-32)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA5, "SMPTE-299M 3G HD Audio Data Grp7 (Ch 25-28)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA6, "SMPTE-299M 3G HD Audio Data Grp6 (Ch 21-24)"));
        sDIDToStringMap.insert(DIDToStringPair(0xA7, "SMPTE-299M 3G HD Audio Data Grp5 (Ch 17-20)"));
        sDIDToStringMap.insert(DIDToStringPair(0xD1, "AJA QA F1 Test Packet"));
        sDIDToStringMap.insert(DIDToStringPair(0xD2, "AJA QA F1 Test Packet"));
        sDIDToStringMap.insert(DIDToStringPair(0xD3, "AJA QA F2 Test Packet"));
        sDIDToStringMap.insert(DIDToStringPair(0xE0, "SMPTE-299M HD Audio Ctrl Grp4 (Ch 13-16)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE1, "SMPTE-299M HD Audio Ctrl Grp3 (Ch 9-12)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE2, "SMPTE-299M HD Audio Ctrl Grp2 (Ch 5-8)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE3, "SMPTE-299M HD Audio Ctrl Grp1 (Ch 1-4)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE4, "SMPTE-299M HD Audio Grp4 (Ch 13-16)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE5, "SMPTE-299M HD Audio Grp3 (Ch 9-12)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE6, "SMPTE-299M HD Audio Grp2 (Ch 5-8)"));
        sDIDToStringMap.insert(DIDToStringPair(0xE7, "SMPTE-299M HD Audio Grp1 (Ch 1-4)"));
        sDIDToStringMap.insert(DIDToStringPair(0xEC, "SMPTE-272M SD Audio Ctrl Grp4 (Ch 13-16)"));
        sDIDToStringMap.insert(DIDToStringPair(0xED, "SMPTE-272M SD Audio Ctrl Grp3 (Ch 9-12)"));
        sDIDToStringMap.insert(DIDToStringPair(0xEE, "SMPTE-272M SD Audio Ctrl Grp2 (Ch 5-8"));
        sDIDToStringMap.insert(DIDToStringPair(0xEF, "SMPTE-272M SD Audio Ctrl Grp1 (Ch 1-4)"));
        sDIDToStringMap.insert(DIDToStringPair(0xF0, "SMPTE-315 Camera Position"));
        sDIDToStringMap.insert(DIDToStringPair(0xF4, "RP-165 Error Detect/Checkwords"));
        sDIDToStringMap.insert(DIDToStringPair(0xF8, "SMPTE-272M SD Audio Ext Data Grp4 (Ch 13-16)"));
        sDIDToStringMap.insert(DIDToStringPair(0xF9, "SMPTE-272M SD Audio Data Grp4 (Ch 13-16)"));
        sDIDToStringMap.insert(DIDToStringPair(0xFA, "SMPTE-272M SD Audio Ext Data Grp3 (Ch 9-12)"));
        sDIDToStringMap.insert(DIDToStringPair(0xFB, "SMPTE-272M SD Audio Data Grp3 (Ch 9-12)"));
        sDIDToStringMap.insert(DIDToStringPair(0xFC, "SMPTE-272M SD Audio Ext Data Grp2 (Ch 5-8"));
        sDIDToStringMap.insert(DIDToStringPair(0xFD, "SMPTE-272M SD Audio Data Grp2 (Ch 5-8"));
        sDIDToStringMap.insert(DIDToStringPair(0xFE, "SMPTE-272M SD Audio Ext Data Grp1 (Ch 1-4)"));
        sDIDToStringMap.insert(DIDToStringPair(0xFF, "SMPTE-272M SD Audio Data Grp1 (Ch 1-4)"));
    }
    const AJAAncDIDSIDPair didsid(inDID, inSID);
    DIDSIDToStringMapCI it(sDIDSIDToStringMap.find(didsid));
    if (it != sDIDSIDToStringMap.end())
        return it->second;
    DIDToStringMapCI didIt(sDIDToStringMap.find(inDID));
    if (didIt != sDIDToStringMap.end())
        return didIt->second;
    return "";
}   //  DIDSIDToString
 
static const NTV2DIDSet sValidHDMIAuxPacketTypes = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
                                                    0x80, 0x81, 0x82, 0x83, 0x84, 0x85};    //  <== InfoFrame types
 
string AJAAncillaryData::AuxPacketTypeToString (const uint8_t auxPacketType)
{
    switch (auxPacketType)
    {
        case 0x01: return "Audio Clock Regeneration (N/CTS)";
        case 0x02: return "Audio Sample (L-PCM & IEC-61937 compressed)";
        case 0x03: return "General Control";
        case 0x04: return "ACP Packet";
        case 0x05: return "ISRC1 Packet";
        case 0x06: return "ISRC2 Packet";
        case 0x07: return "One Bit Audio Sample Packet";
        case 0x08: return "DST Audio Packet";
        case 0x09: return "High Bitrate Audio Stream Packet (IEC-61937)";
        case 0x0A: return "Gamut Metadata Packet";
        case 0x80: return "General InfoFrame Packet";  // May not be valid
        case 0x81: return "Vendor-Specific InfoFrame";
        case 0x82: return "AVI InfoFrame";
        case 0x83: return "Source Product Descriptor InfoFrame";
        case 0x84: return "Audio InfoFrame";
        case 0x85: return "MPEG Source InfoFrame";
    }
    return ""; 
}   //  AuxPacketTypeToString
 
bool AJAAncillaryData::AuxPacketTypeIsValid (const uint8_t inAuxPktType)
{
    return sValidHDMIAuxPacketTypes.find(inAuxPktType) != sValidHDMIAuxPacketTypes.end();
}
 
//  AJARTPAncPayloadHeader
 
 
bool AJARTPAncPayloadHeader::BufferStartsWithRTPHeader (const NTV2Buffer & inBuffer)
{
    if (inBuffer.IsNULL())
        return false;
    //  Peek in buffer and see if it starts with an RTP header...
    AJARTPAncPayloadHeader  hdr;
    if (!hdr.ReadFromBuffer(inBuffer))
        return false;
    return hdr.IsValid();
}
 
AJARTPAncPayloadHeader::AJARTPAncPayloadHeader()
    :   mVBits          (2),        //  Playout: don't care -- hardware sets this
        mPBit           (false),    //  Playout: don't care -- hardware sets this
        mXBit           (false),    //  Playout: don't care -- hardware sets this
        mMarkerBit      (false),    //  Playout: don't care -- hardware sets this
        mCCBits         (0),        //  Playout: don't care -- hardware sets this
        mPayloadType    (0),        //  Playout: don't care -- hardware sets this
        mSequenceNumber (0),        //  Playout: don't care -- hardware sets this
        mTimeStamp      (0),        //  Playout: don't care -- hardware sets this
        mSyncSourceID   (0),        //  Playout: client sets this
        mPayloadLength  (0),        //  Playout: WriteIPAncData sets this
        mAncCount       (0),        //  Playout: WriteIPAncData sets this
        mFieldSignal    (0)         //  Playout: WriteIPAncData sets this
{
}
 
bool AJARTPAncPayloadHeader::GetPacketHeaderULWordForIndex (const unsigned inIndex0, uint32_t & outULWord) const
{
    switch (inIndex0)
    {
        case 0:
        {
            uint32_t u32(uint32_t(mVBits << 30));
            u32 |= uint32_t(mPBit ? 1 : 0) << 29;
            u32 |= uint32_t(mPBit ? 1 : 0) << 29;
            u32 |= uint32_t(mXBit ? 1 : 0) << 28;
            u32 |= uint32_t(mCCBits & 0x0000000F) << 24;
            u32 |= uint32_t(IsEndOfFieldOrFrame() ? 1 : 0) << 23;
            u32 |= uint32_t(GetPayloadType() & 0x0000007F) << 16;
            u32 |= uint32_t(GetSequenceNumber() & 0x0000FFFF);
            outULWord = ENDIAN_32HtoN(u32);
            break;
        }
 
        case 1:
            outULWord = ENDIAN_32HtoN(GetTimeStamp());
            break;
 
        case 2:
            outULWord = ENDIAN_32HtoN(GetSyncSourceID());
            break;
 
        case 3:
        {
            const uint32_t  u32 ((GetSequenceNumber() & 0xFFFF0000) | (GetPayloadLength()));
            outULWord = ENDIAN_32HtoN(u32);
            break;
        }
 
        case 4:
        {
            uint32_t u32(uint32_t(GetAncPacketCount() & 0x000000FF) << 24);
            u32 |= uint32_t(GetFieldSignal() & 0x00000003) << 22;
            outULWord = ENDIAN_32HtoN(u32);
            break;
        }
 
        default:
            outULWord = 0;
            return false;
    }
    return true;
}
 
bool AJARTPAncPayloadHeader::SetFromPacketHeaderULWordAtIndex(const unsigned inIndex0, const uint32_t inULWord)
{
    const uint32_t  u32 (ENDIAN_32NtoH(inULWord));
    switch (inIndex0)
    {
        case 0:     mVBits = uint8_t(u32 >> 30);
                    mPBit = (u32 & 0x20000000) ? true : false;
                    mXBit = (u32 & 0x10000000) ? true : false;
                    mCCBits = uint8_t((u32 & 0x0F000000) >> 24);
                    mMarkerBit = (u32 & 0x00800000) ? true : false;
                    mPayloadType = uint8_t((u32 & 0x007F0000) >> 16);
                    mSequenceNumber = (mSequenceNumber & 0xFFFF0000) | (u32 & 0x0000FFFF);  //  Replace LS 16 bits
                    break;
 
        case 1:     mTimeStamp = u32;
                    break;
 
        case 2:     mSyncSourceID = u32;
                    break;
 
        case 3:     mSequenceNumber = (u32 & 0xFFFF0000) | (mSequenceNumber & 0x0000FFFF);  //  Replace MS 16 bits
                    mPayloadLength = uint16_t(u32 & 0x0000FFFF);
                    break;
 
        case 4:     mAncCount = uint8_t((u32 & 0xFF000000) >> 24);
                    mFieldSignal = uint8_t((u32 & 0x00C00000) >> 22);
                    break;
 
        default:    return false;
    }
    return true;
}
 
bool AJARTPAncPayloadHeader::WriteToULWordVector (ULWordSequence & outVector, const bool inReset) const
{
    if (inReset)
        outVector.clear();
    while (outVector.size() < 5)
        outVector.push_back(0);
    for (unsigned ndx(0);  ndx < 5;  ndx++)
        outVector[ndx] = GetPacketHeaderULWordForIndex(ndx);
    return true;
}
 
bool AJARTPAncPayloadHeader::WriteToBuffer (NTV2Buffer & outBuffer, const ULWord inU32Offset) const
{
    const ULWord    startingByteOffset  (inU32Offset * sizeof(uint32_t));
    if ((startingByteOffset + ULWord(GetHeaderByteCount())) > outBuffer.GetByteCount())
        return false;   //  Buffer too small
    uint32_t *  pU32s   (reinterpret_cast<uint32_t*>(outBuffer.GetHostAddress(startingByteOffset)));
    for (unsigned ndx(0);  ndx < 5;  ndx++)
        pU32s[ndx] = GetPacketHeaderULWordForIndex(ndx);
    return true;
}
 
bool AJARTPAncPayloadHeader::ReadFromULWordVector (const ULWordSequence & inVector)
{
    //  Note: uint32_t's are assumed to be in network byte order
    if (inVector.size() < 5)
        return false;   //  Too small
    for (unsigned ndx(0);  ndx < 5;  ndx++)
        if (!SetFromPacketHeaderULWordAtIndex(ndx, inVector[ndx]))
            return false;
    return true;
}
 
bool AJARTPAncPayloadHeader::ReadFromBuffer(const NTV2Buffer & inBuffer)
{
    if (inBuffer.GetByteCount() < GetHeaderByteCount())
        return false;   //  Too small
    const uint32_t *    pU32s   (reinterpret_cast <const uint32_t *> (inBuffer.GetHostPointer()));
    for (unsigned ndx(0);  ndx < 5;  ndx++)
        if (!SetFromPacketHeaderULWordAtIndex(ndx, pU32s[ndx]))
            return false;
    return true;
}
 
const string & AJARTPAncPayloadHeader::FieldSignalToString (const uint8_t inFBits)
{
    static const string sStrs[] =   {   "p/noF",    "BAD",  "i/F1", "i/F2"  };
    return sStrs[inFBits & 0x03];
}
 
bool AJARTPAncPayloadHeader::operator == (const AJARTPAncPayloadHeader & inRHS) const
{
    return  mVBits          == inRHS.mVBits
        &&  mPBit           == inRHS.mPBit
        &&  mXBit           == inRHS.mXBit
        &&  mCCBits         == inRHS.mCCBits
        &&  mMarkerBit      == inRHS.mMarkerBit
        &&  mPayloadType    == inRHS.mPayloadType
        &&  mSequenceNumber == inRHS.mSequenceNumber
        &&  mTimeStamp      == inRHS.mTimeStamp
        &&  mSyncSourceID   == inRHS.mSyncSourceID
        &&  mPayloadLength  == inRHS.mPayloadLength
        &&  mAncCount       == inRHS.mAncCount
        &&  mFieldSignal    == inRHS.mFieldSignal;
}
 
ostream & AJARTPAncPayloadHeader::Print (ostream & inOutStream) const
{   //  Translate back to host byte order before printing:
    const uint32_t  word0   (ENDIAN_32NtoH(GetPacketHeaderULWordForIndex(0)));
    inOutStream << xHEX0N(word0,8)
//              << "|" << bBIN032(word0)
                << ": V=" << DEC(uint16_t(mVBits))
                << " P=" << mPBit << " X=" << mXBit << " CC=" << DEC(uint16_t(mCCBits))
                << " M=" << (IsEndOfFieldOrFrame()?"EOF":"0") << " PT=" << xHEX0N(uint16_t(GetPayloadType()),2)
                << " Seq#=" << xHEX0N(GetSequenceNumber(),8) << " TS=" << xHEX0N(GetTimeStamp(),8)
                << " SSRC=" << xHEX0N(GetSyncSourceID(),8) << " PayLen=" << DEC(GetPayloadLength())
                << " AncCnt=" << DEC(uint16_t(GetAncPacketCount())) << " F=" << FieldSignalToString(GetFieldSignal())
                << (IsValid() ? "" : " (invalid)");
    return inOutStream;
}
 
bool AJARTPAncPayloadHeader::IsNULL(void) const
{   //  Return TRUE if all of my fields are zero...
    return !(mVBits || mPBit || mXBit || mCCBits || mMarkerBit || mPayloadType || mSequenceNumber || mTimeStamp || mSyncSourceID || mPayloadLength || mAncCount || mFieldSignal);
}
 
bool AJARTPAncPayloadHeader::IsValid(void) const
{   //  Simple validation -- Check that...
    return  mVBits == 0x02          //  Version == 2
        &&  !IsNULL()               //  Not NULL
        &&  IsValidFieldSignal();   //  Valid field bits
}
 
 
//  AJARTPAncPacketHeader
 
AJARTPAncPacketHeader::AJARTPAncPacketHeader()
    :   mCBit   (false),
        mSBit   (false),
        mLineNum    (0),
        mHOffset    (0),
        mStreamNum  (0)
{
}
 
AJARTPAncPacketHeader::AJARTPAncPacketHeader(const AJAAncDataLoc & inLoc)
    :   mCBit   (false),
        mSBit   (false),
        mLineNum    (0),
        mHOffset    (0),
        mStreamNum  (0)
{
    SetFrom(inLoc);
}
 
uint32_t AJARTPAncPacketHeader::GetULWord (void) const
{
    //  In network byte order:
    //
    //   0                   1                   2                   3
    //   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 
    //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    //  |C|   Line_Number       |   Horizontal_Offset   |S|  StreamNum  |
    //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    uint32_t    u32(0); //  Build little-endian 32-bit ULWord with this
    u32 |= (uint32_t(GetLineNumber()) & 0x000007FF) << 20;  //  11-bit line number
    u32 |= (IsCBitSet() ? 0x80000000 : 0x00000000);
    u32 |= (uint32_t(GetHorizOffset()) & 0x00000FFF) << 8;  //  12-bit horiz offset
    u32 |= IsSBitSet() ? 0x00000080 : 0x00000000;           //  Data Stream flag
    if (IsSBitSet())
        u32 |= uint32_t(GetStreamNumber() & 0x7F);          //  7-bit StreamNum
    return ENDIAN_32HtoN(u32);  //  Convert to big-endian
}
 
bool AJARTPAncPacketHeader::SetFromULWord (const uint32_t inULWord)
{
    const uint32_t  u32 (ENDIAN_32NtoH(inULWord));
    //   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 
    //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    //  |C|   Line_Number       |   Horizontal_Offset   |S|  StreamNum  |
    //  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    if (u32 & 0x80000000)
        SetCChannel();
    else
        SetYChannel();
    SetLineNumber(uint16_t((u32 & 0x7FF00000) >> 20));
    SetHorizOffset(uint16_t((u32 & 0x000FFF00) >> 8));
    SetStreamNumber(uint8_t(u32 & 0x0000007F));
    SetDataStreamFlag(u32 & 0x00000080);
    return true;
}
 
bool AJARTPAncPacketHeader::WriteToULWordVector (ULWordSequence & outVector, const bool inReset) const
{
    if (inReset)
        outVector.clear();
    outVector.push_back(GetULWord());
    return true;
}
 
bool AJARTPAncPacketHeader::ReadFromULWordVector (const ULWordSequence & inVector, const unsigned inIndex0)
{
    if (inIndex0 >= inVector.size())
        return false;   //  Bad index -- out of range
    return SetFromULWord(inVector[inIndex0]);
}
 
AJAAncDataLoc AJARTPAncPacketHeader::AsDataLocation(void) const
{
    AJAAncDataLoc   result;
    result.SetLineNumber(GetLineNumber()).SetHorizontalOffset(GetHorizOffset())
            .SetDataChannel(IsCBitSet() ? AJAAncDataChannel_C : AJAAncDataChannel_Y)
            .SetDataLink(AJAAncDataLink_A).SetDataStream(AJAAncDataStream_1);
    if (IsSBitSet())
    {
        //  e.g. SMPTE ST 425-3 DL 3Gbps, data streams are numbered 1-4, so DS1/DS2 on linkA, DS3/DS4 on linkB
        result.SetDataStream(AJAAncDataStream(GetStreamNumber()));
        if (IS_LINKB_AJAAncDataStream(result.GetDataStream()))
            result.SetDataLink(AJAAncDataLink_B);
    }
    return result;
}
 
AJARTPAncPacketHeader & AJARTPAncPacketHeader::SetFrom(const AJAAncDataLoc & inLoc)
{
    const AJAAncDataLink    lnk     (inLoc.GetDataLink());
    const AJAAncDataStream  ds      (inLoc.GetDataStream());
    const AJAAncDataChannel dChan   (inLoc.GetDataChannel());
 
    //  @bug    Dang, the sense of the C bit is opposite of our AJAAncDataChannel enum!
    //          The C bit should be '1' for AJAAncDataChannel_C (0).
    //          The C bit should be '0' for AJAAncDataChannel_Y (1).
    //          The C bit should be '0' for SD, but we use AJAAncDataChannel_Both (0) for this,
    //          which is indistinguishable from AJAAncDataChannel_C (0).
    //  @todo   This needs to be addressed.
    mCBit = IS_VALID_AJAAncDataChannel(dChan)    &&  (dChan != AJAAncDataChannel_Y);
 
    //  Data Stream Flag
    //      '0':    No guidance -- don't know -- don't care
    //      '1':    StreamNum field carries info about source data stream number
    mSBit = IS_VALID_AJAAncDataLink(lnk)    ||  IS_VALID_AJAAncDataStream(ds);
 
    if (IS_VALID_AJAAncDataLink(lnk))
        mStreamNum = uint8_t(lnk);
    else if (IS_VALID_AJAAncDataStream(ds))
        mStreamNum = uint8_t(ds);
    else
        mStreamNum = 0;
 
    mLineNum = inLoc.GetLineNumber();
    mHOffset = inLoc.GetHorizontalOffset();
 
    return *this;
}
 
ostream & AJARTPAncPacketHeader::Print (ostream & inOutStream) const
{
    inOutStream << xHEX0N(GetULWord(),8) << ": C=" << (IsCBitSet() ? "1" : "0")
                << " Line=" << DEC(GetLineNumber()) << " HOff=" << DEC(GetHorizOffset())
                << " S=" << (IsSBitSet() ? "1" : "0") << " Strm=" << DEC(uint16_t(GetStreamNumber()));
    return inOutStream;
}