ntv2llburn.cpp

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/* SPDX-License-Identifier: MIT */
#include "ntv2llburn.h"
#include "ntv2endian.h"
#include "ntv2formatdescriptor.h"
#include "ajabase/common/types.h"
#include "ajaanc/includes/ancillarylist.h"
#include <iostream>
 
using namespace std;
 
//  Override NTV2_ANCSIZE_MAX for testing new HANC insertion feature
#if defined(NTV2_ANCSIZE_MAX)
    #undef NTV2_ANCSIZE_MAX
#endif
#define NTV2_ANCSIZE_MAX (256 * 1024)   //  Super Size Me!  0x40000
 
 
const uint32_t  kAppSignature   (NTV2_FOURCC('L','l','b','u'));
const uint32_t  kNumFrameBuffers (2); // ping-pong between frames N and N+1 (determined by querying Auto-Circulate for available frame-buffers)
 
#define AsULWordPtr(_p_)        reinterpret_cast<ULWord*>(_p_)
#define AsCU8Ptr(_p_)           reinterpret_cast<const uint8_t*>(_p_)
 
 
NTV2LLBurn::NTV2LLBurn (const BurnConfig & inConfig)
    :   mConfig                 (inConfig),
        mRunThread              (AJAThread()),
        mDeviceID               (DEVICE_ID_NOTFOUND),
        mVideoFormat            (NTV2_FORMAT_UNKNOWN),
        mSavedTaskMode          (NTV2_DISABLE_TASKS),
        mOutputDest             (NTV2_OUTPUTDESTINATION_INVALID),
        mAudioSystem            (NTV2_AUDIOSYSTEM_1),
        mGlobalQuit             (false),
        mAudioInLastAddress     (0),
        mAudioOutLastAddress    (0),
        mFramesProcessed        (0),
        mFramesDropped          (0)
{
}   //  constructor
 
 
NTV2LLBurn::~NTV2LLBurn ()
{
    //  Stop my capture and playout threads, then destroy them...
    Quit();
 
    //  Unsubscribe from input vertical event...
    mDevice.UnsubscribeInputVerticalEvent (mConfig.fInputChannel);
 
    if (!mConfig.fDoMultiFormat)
    {
        mDevice.SetTaskMode (mSavedTaskMode);                                       //  Restore prior service level
        mDevice.ReleaseStreamForApplication (kAppSignature, static_cast<int32_t>(AJAProcess::GetPid()));    //  Release the device
    }
 
    //  Don't leave the audio system active after we exit
    mDevice.StopAudioInput (mAudioSystem);
    mDevice.StopAudioOutput (mAudioSystem);
 
}   //  destructor
 
 
void NTV2LLBurn::Quit (void)
{
    //  Set the global 'quit' flag, and wait for the thread to go inactive...
    mGlobalQuit = true;
 
    while (mRunThread.Active())
        AJATime::Sleep(10);
 
}   //  Quit
 
 
AJAStatus NTV2LLBurn::Init (void)
{
    AJAStatus   status  (AJA_STATUS_SUCCESS);
 
    //  Open the device...
    if (!CNTV2DeviceScanner::GetFirstDeviceFromArgument (mConfig.fDeviceSpec, mDevice))
        {cerr << "## ERROR:  Device '" << mConfig.fDeviceSpec << "' not found" << endl;  return AJA_STATUS_OPEN;}
 
    if (!mDevice.IsDeviceReady (false))
        {cerr << "## ERROR:  Device '" << mConfig.fDeviceSpec << "' not ready" << endl;  return AJA_STATUS_INITIALIZE;}
 
    mDeviceID = mDevice.GetDeviceID ();     //  Keep the device ID handy since it will be used frequently
 
    //  Burn requires device capable of capturing and playing video...
    if (!(mDevice.features().CanDoCapture()  &&  mDevice.features().CanDoPlayback()))
        {cerr << "## ERROR:  Device cannot both capture & play video" << endl;  return AJA_STATUS_BAD_PARAM; }
 
    ULWord  appSignature    (0);
    int32_t appPID          (0);
    mDevice.GetTaskMode (mSavedTaskMode);       //  Save the current device state
    mDevice.GetStreamingApplication (appSignature, appPID);     //  Who currently "owns" the device?
    if (!mConfig.fDoMultiFormat)
    {
        if (!mDevice.AcquireStreamForApplication (kAppSignature, static_cast<int32_t>(AJAProcess::GetPid())))
        {
            cerr << "## ERROR:  Unable to acquire device because another app (pid " << appPID << ") owns it" << endl;
            return AJA_STATUS_BUSY;     //  Some other app is using the device
        }
        mDevice.ClearRouting ();    //  Clear the current device routing (since I "own" the device)
    }
    mDevice.SetTaskMode (NTV2_OEM_TASKS);   //  Set the OEM service level
 
    //  Configure the SDI relays if present
    if (mDevice.features().HasSDIRelays())
    {
        //  Note that if the board's jumpers are not set in the position
        //  to enable the watchdog timer, these calls will have no effect.
        mDevice.SetSDIWatchdogEnable(true, 0);  //  SDI 1/2
        mDevice.SetSDIWatchdogEnable(true, 1);  //  SDI 3/4
 
        //  Set timeout delay to 2 seconds expressed in multiples of 8 ns
        //  and take the relays out of bypass
        mDevice.SetSDIWatchdogTimeout (2 * 125000000);
        mDevice.KickSDIWatchdog ();
 
        //  Give the mechanical relays some time to switch
        AJATime::Sleep (500);
    }
 
    if (mConfig.WithHanc())
    {
        //  Transfer audio using HANC extractor/inserter
        mConfig.fWithAnc = true;
        mConfig.fSuppressAudio = true;
    }
 
    if (mConfig.WithAnc() && !mDevice.features().CanDoCustomAnc())
        {cerr << "## WARNING: Device doesn't support custom Anc, '-a -h' option ignored" << endl;  mConfig.fWithAnc = false; mConfig.fWithHanc = false;}
 
    //  Set up the video and audio...
    status = SetupVideo();
    if (AJA_FAILURE (status))
        return status;
 
    status = SetupAudio();
    if (AJA_FAILURE (status))
        return status;
 
    //  Set up the circular buffers...
    status = SetupHostBuffers();
    if (AJA_FAILURE (status))
        return status;
 
    if (NTV2_IS_ANALOG_TIMECODE_INDEX(mConfig.fTimecodeSource))
        mDevice.SetLTCInputEnable(true);    //  Enable analog LTC input (some LTC inputs are shared with reference input)
 
    //  Lastly, prepare my AJATimeCodeBurn instance...
    mTCBurner.RenderTimeCodeFont (CNTV2DemoCommon::GetAJAPixelFormat (mConfig.fPixelFormat), mFormatDesc.numPixels, mFormatDesc.numLines);
 
    return AJA_STATUS_SUCCESS;
 
}   //  Init
 
 
AJAStatus NTV2LLBurn::SetupVideo (void)
{
    const uint16_t  numFrameStores  (mDevice.features().GetNumFrameStores());
    const uint16_t  numSDIOutputs   (mDevice.features().GetNumVideoOutputs());
 
    //  Can the device support the desired input source?
    if (!mDevice.features().CanDoInputSource(mConfig.fInputSource))
        {cerr << "## ERROR:  This device cannot receive input from the specified source" << endl;   return AJA_STATUS_BAD_PARAM;}
 
    //  Pick an input NTV2Channel from the input source, and enable its frame buffer...
    mConfig.fInputChannel = NTV2_INPUT_SOURCE_IS_ANALOG(mConfig.fInputSource) ? NTV2_CHANNEL1 : ::NTV2InputSourceToChannel(mConfig.fInputSource);
    mDevice.EnableChannel (mConfig.fInputChannel);      //  Enable the input frame buffer
 
    //  Pick an appropriate output NTV2Channel, and enable its frame buffer...
    switch (mConfig.fInputSource)
    {
        case NTV2_INPUTSOURCE_SDI1:     mConfig.fOutputChannel = numSDIOutputs < 3 || numFrameStores == 2 || numFrameStores > 4 ? NTV2_CHANNEL2 : NTV2_CHANNEL3;    break;
 
        case NTV2_INPUTSOURCE_HDMI2:
        case NTV2_INPUTSOURCE_SDI2:     mConfig.fOutputChannel = numFrameStores > 4 ? NTV2_CHANNEL3 : NTV2_CHANNEL4;                        break;
 
        case NTV2_INPUTSOURCE_HDMI3:
        case NTV2_INPUTSOURCE_SDI3:     mConfig.fOutputChannel = NTV2_CHANNEL4;                                                             break;
 
        case NTV2_INPUTSOURCE_HDMI4:
        case NTV2_INPUTSOURCE_SDI4:     mConfig.fOutputChannel = numFrameStores > 4 ? NTV2_CHANNEL5 : NTV2_CHANNEL3;                        break;
 
        case NTV2_INPUTSOURCE_SDI5:     mConfig.fOutputChannel = NTV2_CHANNEL6;                                                             break;
        case NTV2_INPUTSOURCE_SDI6:     mConfig.fOutputChannel = NTV2_CHANNEL7;                                                             break;
        case NTV2_INPUTSOURCE_SDI7:     mConfig.fOutputChannel = NTV2_CHANNEL8;                                                             break;
        case NTV2_INPUTSOURCE_SDI8:     mConfig.fOutputChannel = NTV2_CHANNEL7;                                                             break;
 
        case NTV2_INPUTSOURCE_ANALOG1:
        case NTV2_INPUTSOURCE_HDMI1:    mConfig.fOutputChannel = numFrameStores < 3 ? NTV2_CHANNEL2 : NTV2_CHANNEL3;
                                        mAudioSystem = NTV2_AUDIOSYSTEM_2;
                                        break;
//      default:
        case NTV2_INPUTSOURCE_INVALID:  cerr << "## ERROR:  Bad input source" << endl;  return AJA_STATUS_BAD_PARAM;
    }
 
    // Check to see if desired input/output channels are in use by Auto-Circulate, i.e. another Auto-Circulate-based ntv2 demo is running.
    AUTOCIRCULATE_STATUS acStatus;
    if (!mDevice.AutoCirculateInitForInput( mConfig.fInputChannel,
                                            NTV2ACFrameRange(kNumFrameBuffers),
                                            NTV2_AUDIOSYSTEM_INVALID,
                                            AUTOCIRCULATE_WITH_RP188
                                                | (mDevice.features().CanDoCustomAnc() ? AUTOCIRCULATE_WITH_ANC : 0)))
    {
        cerr << "Failed to init " << NTV2ChannelToString(mConfig.fInputChannel) << " for input. Is channel in-use by Auto-Circulate?" << endl;
        return AJA_STATUS_FAIL;
    }
    if (!mDevice.AutoCirculateGetStatus(mConfig.fInputChannel, acStatus))
    {
        cerr << "Error getting Auto-Circulate status for input channel " << NTV2ChannelToString(mConfig.fInputChannel) << endl;
        return AJA_STATUS_FAIL;
    }
    mInputStartFrame = acStatus.acStartFrame;
    mInputEndFrame = acStatus.acEndFrame;
 
    if (!mDevice.AutoCirculateInitForOutput( mConfig.fOutputChannel,
                                             NTV2ACFrameRange(kNumFrameBuffers),
                                             NTV2_AUDIOSYSTEM_INVALID,
                                             AUTOCIRCULATE_WITH_RP188  | (mDevice.features().CanDoCustomAnc() ? AUTOCIRCULATE_WITH_ANC : 0)))
    {
        cerr << "Failed to init " << NTV2ChannelToString(mConfig.fOutputChannel) << " for output. Is channel in-use by Auto-Circulate?" << endl;
        return AJA_STATUS_FAIL;
    }
    if (!mDevice.AutoCirculateGetStatus(mConfig.fOutputChannel, acStatus))
    {
        cerr << "Error getting Auto-Circulate status for output channel " << NTV2ChannelToString(mConfig.fOutputChannel) << endl;
        return AJA_STATUS_FAIL;
    }
    mOutputStartFrame = acStatus.acStartFrame;
    mOutputEndFrame = acStatus.acEndFrame;
 
    mDevice.AutoCirculateStop(mConfig.fInputChannel);
    mDevice.AutoCirculateStop(mConfig.fOutputChannel);
 
    bool isTransmit (false);
    if (mDevice.features().HasBiDirectionalSDI()                                //  If device has bidirectional SDI connectors...
        && NTV2_INPUT_SOURCE_IS_SDI(mConfig.fInputSource)                       //  ...and desired input source is SDI...
            && mDevice.GetSDITransmitEnable (mConfig.fInputChannel, isTransmit) //  ...and GetSDITransmitEnable succeeds...
                && isTransmit)                                                  //  ...and input is set to "transmit"...
    {
        mDevice.SetSDITransmitEnable (mConfig.fInputChannel, false);            //  ...then disable transmit mode...
        mDevice.WaitForInputVerticalInterrupt(mConfig.fInputChannel, 20);       //  ...and give the device a dozen frames or so to lock to the input signal
    }   //  if input SDI connector needs to switch from transmit mode
 
    if (mConfig.WithAnc() && !NTV2_INPUT_SOURCE_IS_SDI(mConfig.fInputSource))
        cerr << "## WARNING: Non-SDI input source, no Anc capture possible" << endl;
 
    //  Determine the input video signal format, and set the device's reference source to that input...
    mVideoFormat = mDevice.GetInputVideoFormat (mConfig.fInputSource);
    if (mVideoFormat == NTV2_FORMAT_UNKNOWN)
    {
        cerr << "## ERROR:  The specified input has no signal, or the device cannot handle the signal format" << endl;
        return AJA_STATUS_NOINPUT;  //  Sorry, can't handle this format
    }
 
    mDevice.SetReference (::NTV2InputSourceToReferenceSource (mConfig.fInputSource));
    mAudioSystem    = ::NTV2InputSourceToAudioSystem (mConfig.fInputSource);
    mOutputDest     = ::NTV2ChannelToOutputDestination (mConfig.fOutputChannel);
 
    if (mDevice.features().HasBiDirectionalSDI()            //  If device has bidirectional SDI connectors...
        && NTV2_OUTPUT_DEST_IS_SDI(mOutputDest))            //  ...and output destination is SDI...
            mDevice.SetSDITransmitEnable (mConfig.fOutputChannel, true);    //  ...then enable transmit mode
 
    if (mConfig.WithAnc() && !NTV2_OUTPUT_DEST_IS_SDI(mOutputDest))
        cerr << "## WARNING: Non-SDI output destination, no Anc playout possible" << endl;
 
    mDevice.EnableChannel (mConfig.fInputChannel);      //  Enable the input frame buffer
    mDevice.EnableChannel (mConfig.fOutputChannel);     //  Enable the output frame buffer
 
    if (mDevice.features().CanDoMultiFormat() && mConfig.fDoMultiFormat)
        mDevice.SetMultiFormatMode (true);
    else if (mDevice.features().CanDoMultiFormat())
        mDevice.SetMultiFormatMode (false);
 
    //  Set the input channel format to the detected input format...
    mDevice.SetVideoFormat (mVideoFormat, false, false, mDevice.features().CanDoMultiFormat() ? mConfig.fInputChannel : NTV2_CHANNEL1);
    if (mDevice.features().CanDoMultiFormat())                                          //  If device supports multiple formats per-channel...
        mDevice.SetVideoFormat (mVideoFormat, false, false, mConfig.fOutputChannel);    //  ...then also set the output channel format to the detected input format
 
    //  Set the frame buffer pixel format for both channels on the device, assuming it
    //  supports that pixel format . . . otherwise default to 8-bit YCbCr...
    if (!mDevice.features().CanDoFrameBufferFormat(mConfig.fPixelFormat))
        mConfig.fPixelFormat = NTV2_FBF_8BIT_YCBCR;
 
    //  Set the pixel format for both device frame buffers...
    mDevice.SetFrameBufferFormat (mConfig.fInputChannel, mConfig.fPixelFormat);
    mDevice.SetFrameBufferFormat (mConfig.fOutputChannel, mConfig.fPixelFormat);
 
    //  Enable and subscribe to the interrupts for the channel to be used...
    mDevice.EnableInputInterrupt (mConfig.fInputChannel);
    mDevice.SubscribeInputVerticalEvent (mConfig.fInputChannel);
 
    //  Enable and subscribe to the output interrupts (though it's enabled by default)...
    mDevice.EnableOutputInterrupt (mConfig.fOutputChannel);
    mDevice.SubscribeOutputVerticalEvent (mConfig.fOutputChannel);
 
    //  Set the Frame Store modes
    mDevice.SetMode (mConfig.fInputChannel,  NTV2_MODE_CAPTURE);
    mDevice.SetMode (mConfig.fOutputChannel, NTV2_MODE_DISPLAY);
 
    //  Set up the device signal routing, and both playout and capture AutoCirculate...
    RouteInputSignal();
    RouteOutputSignal();
 
    //  Now that newer AJA devices can capture/play anc data from separate buffers,
    //  there's no need to enable VANC frame geometries...
    mDevice.SetVANCMode (NTV2_VANCMODE_OFF, mConfig.fInputChannel);
    mDevice.SetVANCMode (NTV2_VANCMODE_OFF, mConfig.fOutputChannel);
    if (::Is8BitFrameBufferFormat(mConfig.fPixelFormat))
    {   //  8-bit FBFs:  since not using VANC geometries, disable bit shift...
        mDevice.SetVANCShiftMode (mConfig.fInputChannel, NTV2_VANCDATA_NORMAL);
        mDevice.SetVANCShiftMode (mConfig.fOutputChannel, NTV2_VANCDATA_NORMAL);
    }
 
    //  Be sure the RP188 mode for the SDI input (expressed as an NTV2Channel),
    //  is set to NTV2_RP188_INPUT...
    bool    isBypassEnabled (false);
    mDevice.IsRP188BypassEnabled (mConfig.fInputChannel, isBypassEnabled);
    if (isBypassEnabled)
        mDevice.DisableRP188Bypass (mConfig.fInputChannel);
    mDevice.SetRP188Mode (mConfig.fInputChannel, NTV2_RP188_INPUT);
    mDevice.SetRP188SourceFilter (mConfig.fInputChannel, 0);    //  0=LTC 1=VITC1 2=VITC2
 
    //  Make sure the RP188 mode for all SDI outputs is NTV2_RP188_OUTPUT, and that their RP188
    //  registers are not bypassed (i.e. timecode isn't sourced from an SDI input, as for E-E mode)...
    NTV2_ASSERT(!mRP188Outputs.empty());
    for (NTV2ChannelSetConstIter iter(mRP188Outputs.begin());  iter != mRP188Outputs.end();  ++iter)
    {
        mDevice.SetRP188Mode (*iter, NTV2_RP188_OUTPUT);
        mDevice.DisableRP188Bypass (*iter);
    }
 
    //  Tell the hardware which buffers to use until the main worker thread runs
    mDevice.SetInputFrame (mConfig.fInputChannel,  0);
    mDevice.SetOutputFrame(mConfig.fOutputChannel, 2);
 
    //  Now that the video is set up, get information about the current frame geometry...
    mFormatDesc = NTV2FormatDescriptor (mVideoFormat, mConfig.fPixelFormat);
    return AJA_STATUS_SUCCESS;
 
}   //  SetupVideo
 
 
AJAStatus NTV2LLBurn::SetupAudio (void)
{
    //  Have the audio subsystem capture audio from the designated input source...
    mDevice.SetAudioSystemInputSource (mAudioSystem, ::NTV2InputSourceToAudioSource (mConfig.fInputSource), ::NTV2InputSourceToEmbeddedAudioInput (mConfig.fInputSource));
 
    //  It's best to use all available audio channels...
    mDevice.SetNumberAudioChannels (mDevice.features().GetMaxAudioChannels(), mAudioSystem);
 
    //  Assume 48kHz PCM...
    mDevice.SetAudioRate (NTV2_AUDIO_48K, mAudioSystem);
 
    //  4MB device audio buffers work best...
    mDevice.SetAudioBufferSize (NTV2_AUDIO_BUFFER_BIG, mAudioSystem);
 
    //  Set up the output audio embedders...
    if (mDevice.features().GetNumAudioSystems() > 1)
    {
        //  Some devices, like the Kona1, have 2 FrameStores but only 1 SDI output,
        //  which makes mConfig.fOutputChannel == NTV2_CHANNEL2, but need SDIoutput to be NTV2_CHANNEL1...
        UWord   SDIoutput(mConfig.fOutputChannel);
        if (SDIoutput >= mDevice.features().GetNumVideoOutputs())
            SDIoutput = mDevice.features().GetNumVideoOutputs() - 1;
        mDevice.SetSDIOutputAudioSystem (NTV2Channel(SDIoutput), mAudioSystem);
    }
 
    //
    //  Loopback mode plays whatever audio appears in the input signal when it's
    //  connected directly to an output (i.e., "end-to-end" mode). If loopback is
    //  left enabled, the video will lag the audio as video frames get briefly delayed
    //  in our ring buffer. Audio, therefore, needs to come out of the (buffered) frame
    //  data being played, so loopback must be turned off...
    //
    mDevice.SetAudioLoopBack (NTV2_AUDIO_LOOPBACK_OFF, mAudioSystem);
 
    //  Reset both the input and output sides of the audio system so that the buffer
    //  pointers are reset to zero and inhibited from advancing.
    mDevice.StopAudioOutput (mAudioSystem);
    mDevice.StopAudioInput  (mAudioSystem);
 
    //  Ensure that the audio system will capture samples when the reset is removed
    mDevice.SetAudioCaptureEnable (mAudioSystem, true);
 
    return AJA_STATUS_SUCCESS;
 
}   //  SetupAudio
 
// Fixes internal issue #921
// NTV2 device audio systems wrap after reading/writing 65,280 samples of 16-channel audio (or 130,560 samples of 8-channel audio)...
// i.e. after reading/writing 4,177,920 bytes max.
// A 4MB buffer (4,194,304 bytes) wastes 16K (16,384 bytes), but is page-sized, and readily page-aligned on most host OSes.
#define HOST_AUDIO_BUFFER_SIZE 4194304
 
AJAStatus NTV2LLBurn::SetupHostBuffers (void)
{
    CNTV2DemoCommon::SetDefaultPageSize();  //  Set host-specific page size
 
    //  Allocate and add each in-host buffer to my member variables.
    //  DMA performance can be accelerated slightly by using page-aligned video buffers...
    mpHostVideoBuffer.Allocate(mFormatDesc.GetVideoWriteSize(ULWord(NTV2Buffer::DefaultPageSize())), true);
    mpHostAudioBuffer.Allocate(HOST_AUDIO_BUFFER_SIZE, /*page-aligned*/true);
    mpHostF1AncBuffer.Allocate(mConfig.WithAnc() ? NTV2_ANCSIZE_MAX : 0, /*pageAligned*/true);
    mpHostF2AncBuffer = NTV2Buffer(mConfig.WithAnc() ? NTV2_ANCSIZE_MAX : 0);
 
    if (!mpHostVideoBuffer || !mpHostAudioBuffer  ||  (mConfig.WithAnc() && !mpHostF1AncBuffer)  ||  (mConfig.WithAnc() && !mpHostF2AncBuffer))
    {
        cerr << "## ERROR:  Unable to allocate host buffer(s)" << endl;
        return AJA_STATUS_MEMORY;
    }
 
    return AJA_STATUS_SUCCESS;
 
}   //  SetupHostBuffers
 
 
void NTV2LLBurn::RouteInputSignal (void)
{
    const NTV2OutputCrosspointID    inputOutputXpt  (::GetInputSourceOutputXpt (mConfig.fInputSource));
    const NTV2InputCrosspointID     fbInputXpt      (::GetFrameBufferInputXptFromChannel (mConfig.fInputChannel));
 
    if (::IsRGBFormat (mConfig.fPixelFormat))
    {
        //  If the frame buffer is configured for RGB pixel format, incoming YUV must be converted.
        //  This routes the video signal from the input through a color space converter before
        //  connecting to the RGB frame buffer...
        const NTV2InputCrosspointID     cscVideoInputXpt    (::GetCSCInputXptFromChannel (mConfig.fInputChannel));
        const NTV2OutputCrosspointID    cscOutputXpt        (::GetCSCOutputXptFromChannel (mConfig.fInputChannel, false, true));    //  false=video, true=RGB
 
        mDevice.Connect (cscVideoInputXpt, inputOutputXpt); //  Connect the CSC's video input to the input spigot's output
        mDevice.Connect (fbInputXpt, cscOutputXpt);         //  Connect the frame store's input to the CSC's output
    }
    else
        mDevice.Connect (fbInputXpt, inputOutputXpt);       //  Route the YCbCr signal directly from the input to the frame buffer's input
 
}   //  RouteInputSignal
 
 
void NTV2LLBurn::RouteOutputSignal (void)
{
    const NTV2InputCrosspointID     outputInputXpt  (::GetOutputDestInputXpt (mOutputDest));
    const NTV2OutputCrosspointID    fbOutputXpt     (::GetFrameBufferOutputXptFromChannel (mConfig.fOutputChannel, ::IsRGBFormat (mConfig.fPixelFormat)));
    NTV2OutputCrosspointID          outputXpt       (fbOutputXpt);
 
    mRP188Outputs.clear();
    mRP188Outputs.insert(mConfig.fOutputChannel);
    if (::IsRGBFormat (mConfig.fPixelFormat))
    {
        const NTV2OutputCrosspointID    cscVidOutputXpt (::GetCSCOutputXptFromChannel (mConfig.fOutputChannel));    //  Use CSC's YUV video output
        const NTV2InputCrosspointID     cscVidInputXpt  (::GetCSCInputXptFromChannel (mConfig.fOutputChannel));
 
        mDevice.Connect (cscVidInputXpt, fbOutputXpt);      //  Connect the CSC's video input to the frame store's output
        mDevice.Connect (outputInputXpt, cscVidOutputXpt);  //  Connect the SDI output's input to the CSC's video output
        outputXpt = cscVidOutputXpt;
    }
    else
        mDevice.Connect (outputInputXpt, outputXpt);
 
    if (!mConfig.fDoMultiFormat)
    {
        //  Route all SDI outputs to the outputXpt...
        const NTV2Channel   startNum        (NTV2_CHANNEL1);
        const NTV2Channel   endNum          (NTV2Channel(mDevice.features().GetNumVideoChannels()));
        NTV2WidgetID        outputWidgetID  (NTV2_WIDGET_INVALID);
 
        for (NTV2Channel chan(startNum);  chan < endNum;  chan = NTV2Channel(chan+1))
        {
            mDevice.SetRP188SourceFilter (chan, 0); //  Set all SDI spigots to capture embedded LTC (0==LTC 1==VITC1 2==VITC2)
            if (chan == mConfig.fInputChannel  ||  chan == mConfig.fOutputChannel)
                continue;   //  Skip the input & output channel, already routed
            mRP188Outputs.insert(chan); //  Add this SDI spigot to those we'll push timecode into
            if (mDevice.features().HasBiDirectionalSDI())
                mDevice.SetSDITransmitEnable (chan, true);
            if (CNTV2SignalRouter::GetWidgetForInput (::GetSDIOutputInputXpt (chan, mDevice.features().CanDoDualLink()), outputWidgetID))
                if (mDevice.features().CanDoWidget(outputWidgetID))
                    mDevice.Connect (::GetSDIOutputInputXpt(chan), outputXpt);
        }   //  for each output spigot
 
        //  If HDMI and/or analog video outputs are available, route them, too...
        if (mDevice.features().CanDoWidget(NTV2_WgtHDMIOut1))
            mDevice.Connect (NTV2_XptHDMIOutInput, outputXpt);          //  Route the output signal to the HDMI output
        if (mDevice.features().CanDoWidget(NTV2_WgtHDMIOut1v2))
            mDevice.Connect (NTV2_XptHDMIOutQ1Input, outputXpt);        //  Route the output signal to the HDMI output
        if (mDevice.features().CanDoWidget(NTV2_WgtAnalogOut1))
            mDevice.Connect (NTV2_XptAnalogOutInput, outputXpt);        //  Route the output signal to the Analog output
        if (mDevice.features().CanDoWidget(NTV2_WgtSDIMonOut1))
            mDevice.Connect (::GetSDIOutputInputXpt (NTV2_CHANNEL5), outputXpt);    //  Route the output signal to the SDI monitor output
    }
 
}   //  RouteOutputSignal
 
 
AJAStatus NTV2LLBurn::Run ()
{
    //  Start the main worker thread...
    StartRunThread ();
 
    return AJA_STATUS_SUCCESS;
 
}   //  Run
 
 
 
//  This is where we will start the worker thread
void NTV2LLBurn::StartRunThread (void)
{
    //  Create and start the worker thread...
    mRunThread.Attach(RunThreadStatic, this);
    mRunThread.SetPriority(AJA_ThreadPriority_High);
    mRunThread.Start();
 
}   //  StartRunThread
 
 
//  The worker thread function
void NTV2LLBurn::RunThreadStatic (AJAThread * pThread, void * pContext)     //  static
{
    (void) pThread;
    //  Grab the NTV2LLBurn instance pointer from the pContext parameter,
    //  then call its ProcessFrames method...
    NTV2LLBurn *    pApp    (reinterpret_cast <NTV2LLBurn *> (pContext));
    pApp->ProcessFrames ();
 
}   //  RunThreadStatic
 
 
static const bool   CLEAR_HOST_ANC_BUFFER_BEFORE_READ           (false);
static const bool   PRINT_ANC_PACKETS_AFTER_READ                (false);
static const bool   CLEAR_DEVICE_ANC_BUFFER_AFTER_READ          (false);
static const bool   REPLACE_OUTGOING_ANC_WITH_CUSTOM_PACKETS    (false);
 
 
void NTV2LLBurn::ProcessFrames (void)
{
    const bool  doAncInput              (mConfig.WithAnc() && NTV2_INPUT_SOURCE_IS_SDI(mConfig.fInputSource));
    const bool  doAncOutput             (mConfig.WithAnc() && NTV2_OUTPUT_DEST_IS_SDI(mOutputDest));
    const UWord sdiInput                (UWord(::GetIndexForNTV2InputSource(mConfig.fInputSource)));
    const UWord sdiOutput               (UWord(::NTV2OutputDestinationToChannel(mOutputDest)));
    const bool  isInterlace             (!NTV2_VIDEO_FORMAT_HAS_PROGRESSIVE_PICTURE(mVideoFormat));
    uint32_t    currentInFrame          (mInputStartFrame);
    uint32_t    currentOutFrame         (mOutputStartFrame);
    uint32_t    currentAudioInAddress   (0);
    uint32_t    audioReadOffset         (0);
    uint32_t    audioInWrapAddress      (0);
    uint32_t    audioOutWrapAddress     (0);
    uint32_t    audioBytesCaptured      (0);
    uint32_t    ancBytesCapturedF1      (0);
    uint32_t    ancBytesCapturedF2      (0);
    bool        audioIsReset            (true);
    NTV2DIDSet  savedDIDs;
    string      timeCodeString;
 
    const NTV2Standard          videoStandard       (::GetNTV2StandardFromVideoFormat(mVideoFormat));
    const NTV2SmpteLineNumber   smpteLineNumInfo    (::GetSmpteLineNumber(videoStandard));
    Bouncer<UWord>              yPercent            (85/*upperLimit*/, 1/*lowerLimit*/, 1/*startValue*/);   //  Vertically "bounces" timecode in raster
    const AJAAncDataLoc         F1AncDataLoc        (AJAAncDataLink_A, AJAAncDataChannel_Y, AJAAncDataSpace_VANC, 10, 0, AJAAncDataStream_1);
    NTV2Buffer  zeroesBuffer(mpHostF1AncBuffer.GetByteCount());
    zeroesBuffer.Fill(ULWord64(0));
    BURNNOTE("Thread started");
 
    //  Save current Anc buffer capacity (to restore it later), then max it out...
    ULWord savedF1ByteCapacity(0), savedF2ByteCapacity(0), offset(0);
    mDevice.GetAncRegionOffsetAndSize (offset, savedF1ByteCapacity, NTV2_AncRgn_Field1);
    mDevice.GetAncRegionOffsetAndSize (offset, savedF2ByteCapacity, NTV2_AncRgn_Field2);
    mDevice.AncSetFrameBufferSize (NTV2_ANCSIZE_MAX, NTV2_ANCSIZE_MAX);
 
    if (doAncInput)
    {
        // Configure extractor
        mDevice.AncExtractInit(sdiInput, mConfig.fInputChannel);
 
        if (mConfig.WithHanc())
        {
            mDevice.AncExtractGetFilterDIDs(sdiInput, savedDIDs);   //  Save current ANC filter (so it can be restored later)
 
            //  Configure ANC extractor not to filter audio
            NTV2DIDSet dids;
//          dids.insert(0xe0);  // HD audio group 4 control
//          dids.insert(0xe1);  // HD audio group 3 control
//          dids.insert(0xe2);  // HD audio group 2 control
//          dids.insert(0xe3);  // HD audio group 1 control
//          dids.insert(0xe4);  // HD audio group 4 data
//          dids.insert(0xe5);  // HD audio group 3 data
//          dids.insert(0xe6);  // HD audio group 2 data
//          dids.insert(0xe7);  // HD audio group 1 data
            dids.insert(0xa0);  // 3G audio group 8 control
            dids.insert(0xa1);  // 3G audio group 7 control
            dids.insert(0xa2);  // 3G audio group 6 control
            dids.insert(0xa3);  // 3G audio group 5 control
            dids.insert(0xa4);  // 3G audio group 8 data
            dids.insert(0xa5);  // 3G audio group 7 data
            dids.insert(0xa6);  // 3G audio group 6 data
            dids.insert(0xa7);  // 3G audio group 5 data
            dids.insert(0x41);  // Filter vpid (inserted by sdi output)
            dids.insert(0x60);  // Filter timecode (inserted by sdi output)
            mDevice.AncExtractSetFilterDIDs (sdiInput, dids);
 
            //  Enable HANC extraction
            mDevice.AncExtractSetComponents (sdiInput, true, true, true, true);
        }
        else
        {
            //  Disable HANC extraction
            mDevice.AncExtractSetComponents (sdiInput, true, true, false, false);
        }
 
        // Start extractor
        mDevice.AncExtractSetEnable (sdiInput, true);
    }
 
    if (doAncOutput)
    {
        // Configure inserter
        mDevice.AncInsertInit (sdiOutput, mConfig.fInputChannel);
        mDevice.AncInsertSetComponents (sdiOutput, true, true, mConfig.WithHanc(), mConfig.WithHanc());
        mDevice.AncInsertSetReadParams (sdiOutput, 0, 0, mConfig.fOutputChannel);
        mDevice.AncInsertSetField2ReadParams (sdiOutput, 0, 0, mConfig.fOutputChannel);
    }
 
    mDevice.SetSDIOutputAudioEnabled (::NTV2OutputDestinationToChannel(mOutputDest), mConfig.WithAudio());
 
    mFramesProcessed = mFramesDropped = 0;  //  Start with a fresh frame count
 
    mDevice.GetAudioReadOffset  (audioReadOffset,       mAudioSystem);
    mDevice.GetAudioWrapAddress (audioOutWrapAddress,   mAudioSystem);
 
    //  Wait to make sure the next two SDK calls will be made during the same frame...
    mDevice.WaitForInputFieldID (NTV2_FIELD0, mConfig.fInputChannel);
    mDevice.DMAWriteAnc (0, zeroesBuffer, zeroesBuffer);
    mDevice.DMAWriteAnc (1, zeroesBuffer, zeroesBuffer);
    mDevice.DMAWriteAnc (2, zeroesBuffer, zeroesBuffer);
    mDevice.DMAWriteAnc (3, zeroesBuffer, zeroesBuffer);
 
    //  Before the main loop starts, ping-pong the buffers so the hardware will use
    //  different buffers than the ones it was using while idling...
    currentInFrame  ^= 1;
    currentOutFrame ^= 1;
 
    mDevice.SetInputFrame   (mConfig.fInputChannel,  currentInFrame);
    if (doAncInput)
        mDevice.AncExtractSetWriteParams (sdiInput, currentInFrame, mConfig.fInputChannel);
    if (doAncInput && isInterlace)
        mDevice.AncExtractSetField2WriteParams (sdiInput, currentInFrame, mConfig.fInputChannel);
 
    mDevice.SetOutputFrame  (mConfig.fOutputChannel, currentOutFrame);
 
    //  Wait until the hardware starts filling the new buffers, and then start audio
    //  capture as soon as possible to match the video...
    mDevice.WaitForInputFieldID (NTV2_FIELD0, mConfig.fInputChannel);
    mDevice.StartAudioInput (mAudioSystem);
 
    mAudioInLastAddress     = audioReadOffset;
    audioInWrapAddress      = audioOutWrapAddress + audioReadOffset;
    mAudioOutLastAddress    = 0;
 
    currentInFrame  ^= 1;
    currentOutFrame ^= 1;
 
    mDevice.SetInputFrame   (mConfig.fInputChannel,  currentInFrame);
    if (doAncInput)
        mDevice.AncExtractSetWriteParams (sdiInput, currentInFrame, mConfig.fInputChannel);
    if (doAncInput && isInterlace)
        mDevice.AncExtractSetField2WriteParams (sdiInput, currentInFrame, mConfig.fInputChannel);
 
    mDevice.SetOutputFrame  (mConfig.fOutputChannel, currentOutFrame);
 
    while (!mGlobalQuit)
    {
        //  Wait until the input has completed capturing a frame...
        mDevice.WaitForInputFieldID (NTV2_FIELD0, mConfig.fInputChannel);
 
        //  Flip sense of the buffers again to refer to the buffers that the hardware isn't using (i.e. the off-screen buffers)...
        currentInFrame  ^= 1;
        currentOutFrame ^= 1;
 
        if (mConfig.WithAudio())
        {
            //  Read the audio position registers as close to the interrupt as possible...
            mDevice.ReadAudioLastIn (currentAudioInAddress, NTV2AudioSystem(mConfig.fInputChannel));
            currentAudioInAddress &= ~0x3UL;    //  Force DWORD alignment
            currentAudioInAddress += audioReadOffset;
 
            if (audioIsReset && mAudioOutLastAddress)
            {
                //  Now that the audio system has some samples to play, playback can be started...
                mDevice.StartAudioOutput (mAudioSystem);
                audioIsReset = false;
            }
 
            if (currentAudioInAddress < mAudioInLastAddress)
            {
                //  Audio address has wrapped around the end of the buffer.
                //  Do the calculations and transfer from the last address to the end of the buffer...
                audioBytesCaptured  = audioInWrapAddress - mAudioInLastAddress;
 
                mDevice.DMAReadAudio (mAudioSystem, mpHostAudioBuffer, mAudioInLastAddress, audioBytesCaptured);
 
                //  Transfer the new samples from the start of the buffer to the current address...
                mDevice.DMAReadAudio (mAudioSystem, AsULWordPtr(mpHostAudioBuffer.GetHostAddress(audioBytesCaptured)),
                                        audioReadOffset, currentAudioInAddress - audioReadOffset);
 
                audioBytesCaptured += currentAudioInAddress - audioReadOffset;
            }
            else
            {
                audioBytesCaptured = currentAudioInAddress - mAudioInLastAddress;
 
                //  No wrap, so just perform a linear DMA from the buffer...
                mDevice.DMAReadAudio (mAudioSystem, mpHostAudioBuffer, mAudioInLastAddress, audioBytesCaptured);
            }
 
            mAudioInLastAddress = currentAudioInAddress;
        }   //  if mConfig.WithAudio()
 
        //  Transfer the new frame to system memory...
        mDevice.DMAReadFrame (currentInFrame, mpHostVideoBuffer, mpHostVideoBuffer.GetByteCount());
 
        if (doAncInput)
        {   //  Transfer received Anc data into my F1 & F2 buffers...
            AJAAncillaryList    capturedPackets;
            //  Read ANC bytes captured
            mDevice.AncExtractGetField1Size (sdiInput, ancBytesCapturedF1);
            if (isInterlace)
                mDevice.AncExtractGetField2Size (sdiInput, ancBytesCapturedF2);
            if (CLEAR_HOST_ANC_BUFFER_BEFORE_READ)
            {
                mpHostF1AncBuffer.Fill(0);
                if (isInterlace)
                    mpHostF2AncBuffer.Fill(0);
            }
            //  Read ANC data
            mDevice.DMAReadAnc (currentInFrame, mpHostF1AncBuffer, mpHostF2AncBuffer);
 
            if (PRINT_ANC_PACKETS_AFTER_READ)
            {
                AJAAncillaryList::SetFromDeviceAncBuffers (mpHostF1AncBuffer, mpHostF2AncBuffer, capturedPackets);
                if (capturedPackets.CountAncillaryData())   capturedPackets.Print(cerr, false);     //  Dump packets
            }
            if (CLEAR_DEVICE_ANC_BUFFER_AFTER_READ)
                mDevice.DMAWriteAnc (currentInFrame, zeroesBuffer, zeroesBuffer);
        }
 
        //  Determine which timecode value should be burned in to the video frame
        NTV2_RP188  timecodeValue;
        if (!NTV2_IS_ANALOG_TIMECODE_INDEX(mConfig.fTimecodeSource)  &&  InputSignalHasTimecode())
        {
            //  Use the embedded input time code...
            mDevice.GetRP188Data (mConfig.fInputChannel, timecodeValue);
            CRP188  inputRP188Info  (timecodeValue);
            inputRP188Info.GetRP188Str(timeCodeString);
            //cerr << "SDI" << DEC(mConfig.fTimecodeSource) << ":" << timeCodeString << ":" << timecodeValue << endl;
        }
        else if (NTV2_IS_ANALOG_TIMECODE_INDEX(mConfig.fTimecodeSource)  &&  AnalogLTCInputHasTimecode())
        {
            //  Use the analog input time code...
            mDevice.ReadAnalogLTCInput (mConfig.fTimecodeSource == NTV2_TCINDEX_LTC1 ? 0 : 1, timecodeValue);
            CRP188  analogRP188Info (timecodeValue);
            analogRP188Info.GetRP188Str(timeCodeString);
            //cerr << "Ana" << DEC(mConfig.fTimecodeSource) << ":" << timeCodeString << ":" << timecodeValue << endl;
        }
        else
        {
            //  Invent a timecode (based on the number of frames procesed)...
            const   NTV2FrameRate   ntv2FrameRate   (GetNTV2FrameRateFromVideoFormat (mVideoFormat));
            const   TimecodeFormat  tcFormat        (CNTV2DemoCommon::NTV2FrameRate2TimecodeFormat(ntv2FrameRate));
            const   CRP188          frameRP188Info  (mFramesProcessed, tcFormat);
 
            frameRP188Info.GetRP188Reg(timecodeValue);
            frameRP188Info.GetRP188Str(timeCodeString);
            //cerr << "Inv:" << timeCodeString << ":" << timecodeValue << endl;
        }
 
        //  "Burn" the timecode into the host buffer while we have full access to it...
        mTCBurner.BurnTimeCode (reinterpret_cast <char *> (mpHostVideoBuffer.GetHostPointer()), timeCodeString.c_str(), yPercent.Next());
 
        if (mConfig.WithAudio())
        {
            //  Calculate where the next audio samples should go in the buffer, taking wraparound into account...
            if ((mAudioOutLastAddress + audioBytesCaptured) > audioOutWrapAddress)
            {
                //  The audio will wrap. Transfer enough bytes to fill the buffer to the end...
                mDevice.DMAWriteAudio (mAudioSystem, mpHostAudioBuffer, mAudioOutLastAddress, audioOutWrapAddress - mAudioOutLastAddress);
 
                //  Now transfer the remaining bytes to the front of the buffer...
                mDevice.DMAWriteAudio (mAudioSystem, AsULWordPtr(mpHostAudioBuffer.GetHostAddress(audioOutWrapAddress - mAudioOutLastAddress)),
                                       0, audioBytesCaptured - (audioOutWrapAddress - mAudioOutLastAddress));
 
                mAudioOutLastAddress = audioBytesCaptured - (audioOutWrapAddress - mAudioOutLastAddress);
            }
            else
            {
                //  No wrap, so just do a linear DMA from the buffer...
                mDevice.DMAWriteAudio (mAudioSystem, mpHostAudioBuffer, mAudioOutLastAddress, audioBytesCaptured);
 
                mAudioOutLastAddress += audioBytesCaptured;
            }
        }   //  if mConfig.WithAudio()
 
        //  Send the updated frame back to the board for display...
        mDevice.DMAWriteFrame (currentOutFrame, mpHostVideoBuffer, mpHostVideoBuffer.GetByteCount());
 
        if (doAncOutput)
        {
            if (REPLACE_OUTGOING_ANC_WITH_CUSTOM_PACKETS)
            {
                AJAAncillaryData pkt;   AJAAncillaryList pkts;
                AJAAncDataLoc F2Loc(F1AncDataLoc);
                ULWord pktData(NTV2EndianSwap32(mFramesProcessed));
                pkt.SetDID(0xC0);  pkt.SetSID(0x00);  pkt.SetDataLocation(F1AncDataLoc);  pkt.SetDataCoding(AJAAncDataCoding_Digital);
                pkt.SetPayloadData(AsCU8Ptr(&pktData), 4);
                pkts.AddAncillaryData(pkt);
                if (isInterlace)
                {
                    F2Loc.SetLineNumber(uint16_t(smpteLineNumInfo.GetFirstActiveLine(NTV2_FIELD1)
                                                    + ULWord(F1AncDataLoc.GetLineNumber())
                                                    - smpteLineNumInfo.GetFirstActiveLine(NTV2_FIELD0)));
                    pkt.SetDID(0xC1);  pkt.SetSID(0x01);  pkt.SetDataLocation(F2Loc);
                    pktData = ULWord(pktData << 16) | ULWord(pktData >> 16);
                    pkt.SetPayloadData(AsCU8Ptr(&pktData), 4);
                    pkts.AddAncillaryData(pkt);
                }
                //pkts.Print(cerr, true); cerr << endl;
                pkts.GetTransmitData (mpHostF1AncBuffer, mpHostF2AncBuffer, !isInterlace, isInterlace ? smpteLineNumInfo.GetLastLine(NTV2_FIELD0)+1 : 0);
            }
            //  Write ANC data
            mDevice.DMAWriteAnc (currentOutFrame, mpHostF1AncBuffer, mpHostF2AncBuffer);
        }
 
        //  Write the output timecode (for all SDI output spigots)...
        for (NTV2ChannelSetConstIter iter(mRP188Outputs.begin());  iter != mRP188Outputs.end();  ++iter)
            mDevice.SetRP188Data (*iter, timecodeValue);
 
        //  Check for dropped frames by ensuring the hardware has not started to process
        //  the buffers that were just filled....
        uint32_t readBackIn;
        uint32_t readBackOut;
        mDevice.GetInputFrame   (mConfig.fInputChannel,     readBackIn);
        mDevice.GetOutputFrame  (mConfig.fOutputChannel,    readBackOut);
 
        if ((readBackIn == currentInFrame) || (readBackOut == currentOutFrame))
        {
            cerr    << "## WARNING:  Drop detected:  current in " << currentInFrame << ", readback in " << readBackIn
                    << ", current out " << currentOutFrame << ", readback out " << readBackOut << endl;
            mFramesDropped++;
        }
        else
            mFramesProcessed++;
 
        //  Tell the hardware which buffers to start using at the beginning of the next frame...
        mDevice.SetInputFrame (mConfig.fInputChannel,  currentInFrame);
        if (doAncInput)
            mDevice.AncExtractSetWriteParams (sdiInput, currentInFrame, mConfig.fInputChannel);
        if (doAncInput && isInterlace)
            mDevice.AncExtractSetField2WriteParams (sdiInput, currentInFrame, mConfig.fInputChannel);
 
        mDevice.SetOutputFrame (mConfig.fOutputChannel, currentOutFrame);
        if (doAncOutput)
            mDevice.AncInsertSetReadParams (sdiOutput, currentOutFrame, ancBytesCapturedF1, mConfig.fOutputChannel);
        if (doAncOutput && isInterlace)
            mDevice.AncInsertSetField2ReadParams (sdiOutput, currentOutFrame, ancBytesCapturedF2, mConfig.fOutputChannel);
 
        //  Enable ANC insertion on first output frame
        if (mFramesProcessed == 1)
            mDevice.AncInsertSetEnable (sdiOutput, true);
 
    }   //  loop til quit signaled
 
    if (doAncInput)
        mDevice.AncExtractSetEnable (sdiInput, false);  //  Stop ANC extractor
    if (doAncOutput)
        mDevice.AncInsertSetEnable (sdiOutput, false);  //  Stop ANC inserter
 
    if (doAncInput  &&  mConfig.WithHanc())
        mDevice.AncExtractSetFilterDIDs (sdiInput, savedDIDs);  //  Restore prior ANC filtering
 
    //  Restore previous Anc buffer capacity...
    mDevice.AncSetFrameBufferSize (savedF1ByteCapacity, savedF2ByteCapacity);
    BURNNOTE("Thread completed, will exit");
 
}   //  ProcessFrames
 
 
 
 
void NTV2LLBurn::GetStatus (ULWord & outFramesProcessed, ULWord & outFramesDropped)
{
    outFramesProcessed = mFramesProcessed;
    outFramesDropped = mFramesDropped;
 
}   //  GetACStatus
 
 
static ULWord GetRP188DBBRegNumForInput (const NTV2InputSource inInputSource)
{
    switch (inInputSource)
    {
        case NTV2_INPUTSOURCE_SDI1:     return kRegRP188InOut1DBB;  //  reg 29
        case NTV2_INPUTSOURCE_SDI2:     return kRegRP188InOut2DBB;  //  reg 64
        case NTV2_INPUTSOURCE_SDI3:     return kRegRP188InOut3DBB;  //  reg 268
        case NTV2_INPUTSOURCE_SDI4:     return kRegRP188InOut4DBB;  //  reg 273
        case NTV2_INPUTSOURCE_SDI5:     return kRegRP188InOut5DBB;  //  reg 342
        case NTV2_INPUTSOURCE_SDI6:     return kRegRP188InOut6DBB;  //  reg 418
        case NTV2_INPUTSOURCE_SDI7:     return kRegRP188InOut7DBB;  //  reg 427
        case NTV2_INPUTSOURCE_SDI8:     return kRegRP188InOut8DBB;  //  reg 436
        default:                        return 0;
    }   //  switch on input source
 
}   //  GetRP188DBBRegNumForInput
 
 
bool NTV2LLBurn::InputSignalHasTimecode (void)
{
    bool            result      (false);
    const ULWord    regNum      (GetRP188DBBRegNumForInput(mConfig.fInputSource));
    ULWord          regValue    (0);
 
    //  Bit 16 of the RP188 DBB register will be set if there is timecode embedded in the input signal...
    if (regNum  &&  mDevice.ReadRegister(regNum, regValue)  &&  regValue & BIT(16))
        result = true;
    return result;
 
}   //  InputSignalHasTimecode
 
 
bool NTV2LLBurn::AnalogLTCInputHasTimecode (void)
{
    ULWord  regMask     (kRegMaskLTC1InPresent);
    ULWord  regValue    (0);
    switch (mConfig.fTimecodeSource)
    {
        case NTV2_TCINDEX_LTC1:                                     break;
        case NTV2_TCINDEX_LTC2: regMask = kRegMaskLTC2InPresent;    break;
        default:                return false;
    }
    mDevice.ReadRegister (kRegLTCStatusControl, regValue, regMask);
    return regValue ? true : false;
 
}   //  AnalogLTCInputHasTimecode