ntv2dolbyplayer.cpp

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/* SPDX-License-Identifier: MIT */
#include "ntv2dolbyplayer.h"
#include "ntv2debug.h"
#include "ntv2devicescanner.h"
#include "ntv2testpatterngen.h"
#include "ntv2audiodefines.h"
#include "ajabase/common/timebase.h"
#include "ajabase/system/process.h"

//#include "ajabase/system/debug.h"


using namespace std;

//  Convenience macros for EZ logging:
#define TCFAIL(_expr_)  AJA_sERROR  (AJA_DebugUnit_TimecodeGeneric, AJAFUNC << ": " << _expr_)
#define TCWARN(_expr_)  AJA_sWARNING(AJA_DebugUnit_TimecodeGeneric, AJAFUNC << ": " << _expr_)
#define TCNOTE(_expr_)  AJA_sNOTICE (AJA_DebugUnit_TimecodeGeneric, AJAFUNC << ": " << _expr_)
#define TCINFO(_expr_)  AJA_sINFO   (AJA_DebugUnit_TimecodeGeneric, AJAFUNC << ": " << _expr_)
#define TCDBG(_expr_)   AJA_sDEBUG  (AJA_DebugUnit_TimecodeGeneric, AJAFUNC << ": " << _expr_)

static const uint32_t   AUDIOBYTES_MAX_48K  (201 * 1024);

static const uint32_t   AUDIOBYTES_MAX_192K (824 * 1024);

static const bool       BUFFER_PAGE_ALIGNED (true);

//  Audio tone generator data
static const double gFrequencies [] =   {250.0, 500.0, 1000.0, 2000.0};
static const ULWord gNumFrequencies     (sizeof (gFrequencies) / sizeof (double));
static const double gAmplitudes []  =   {   0.10, 0.15,     0.20, 0.25,     0.30, 0.35,     0.40, 0.45,     0.50, 0.55,     0.60, 0.65,     0.70, 0.75,     0.80, 0.85,
                                            0.85, 0.80,     0.75, 0.70,     0.65, 0.60,     0.55, 0.50,     0.45, 0.40,     0.35, 0.30,     0.25, 0.20,     0.15, 0.10};

NTV2DolbyPlayer::NTV2DolbyPlayer (const DolbyPlayerConfig & inConfig)
    :   mConfig             (inConfig),
        mConsumerThread     (),
        mProducerThread     (),
        mDevice             (),
        mSavedTaskMode      (NTV2_TASK_MODE_INVALID),
        mCurrentFrame       (0),
        mCurrentSample      (0),
        mToneFrequency      (440.0),
        mAudioSystem        (NTV2_AUDIOSYSTEM_INVALID),
        mFormatDesc         (),
        mTCIndexes          (),
        mGlobalQuit         (false),
        mTCBurner           (),
        mHostBuffers        (),
        mFrameDataRing      (),
        mTestPatRasters     (),
        mAudioRate          (NTV2_AUDIO_192K),
        mRampSample         (0),
        mBurstIndex         (0),
        mBurstSamples       (0),
        mBurstBuffer        (NULL),
        mBurstSize          (0),
        mBurstOffset        (0),
        mBurstMax           (0),
        mDolbyBuffer        (NULL),
        mDolbySize          (0),
        mDolbyBlocks        (0)
{ }


NTV2DolbyPlayer::~NTV2DolbyPlayer (void)
{
    //  Stop my playout and producer threads, then destroy them...
    Quit ();

    mDevice.UnsubscribeOutputVerticalEvent (mConfig.fOutputChannel);

    if (mDolbyBuffer)
    {
        delete [] mDolbyBuffer;
        mDolbyBuffer = NULL;
    }

    if (mBurstBuffer)
    {
        delete [] mBurstBuffer;
        mBurstBuffer = NULL;
    }

}   //  destructor


void NTV2DolbyPlayer::Quit (void)
{
    //  Set the global 'quit' flag, and wait for the threads to go inactive...
    mGlobalQuit = true;

    while (mProducerThread.Active())
        AJATime::Sleep(10);

    while (mConsumerThread.Active())
        AJATime::Sleep(10);

    mDevice.SetAudioRate (NTV2_AUDIO_48K, mAudioSystem);
    mDevice.SetHDMIOutAudioRate(NTV2_AUDIO_48K);
    mDevice.SetHDMIOutAudioFormat(NTV2_AUDIO_FORMAT_LPCM);

#if defined(NTV2_BUFFER_LOCKING)
    mDevice.DMABufferUnlockAll();
#endif  //  NTV2_BUFFER_LOCKING
    if (!mConfig.fDoMultiFormat  &&  mDevice.IsOpen())
    {
        mDevice.ReleaseStreamForApplication (kDemoAppSignature, int32_t(AJAProcess::GetPid()));
        if (NTV2_IS_VALID_TASK_MODE(mSavedTaskMode))
            mDevice.SetTaskMode(mSavedTaskMode);    //  Restore prior task mode
    }
}   //  Quit


AJAStatus NTV2DolbyPlayer::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 '" << mDevice.GetDisplayName() << "' not ready" << endl;  return AJA_STATUS_INITIALIZE;}
    if (!mDevice.features().CanDoPlayback())
        {cerr << "## ERROR:  '" << mDevice.GetDisplayName() << "' is capture-only" << endl;  return AJA_STATUS_FEATURE;}
    if (!mDevice.features().GetNumHDMIVideoOutputs())
        {cerr << "## ERROR:  '" << mDevice.GetDisplayName() << "' has no HDMI outputs" << endl;  return AJA_STATUS_FEATURE;}

    const UWord maxNumChannels (mDevice.features().GetNumFrameStores());

    //  Beware -- some older devices (e.g. Corvid1) can only output from FrameStore 2...
    if ((mConfig.fOutputChannel == NTV2_CHANNEL1) && (!mDevice.features().CanDoFrameStore1Display()))
        mConfig.fOutputChannel = NTV2_CHANNEL2;
    if (UWord(mConfig.fOutputChannel) >= maxNumChannels)
    {
        cerr    << "## ERROR:  '" << mDevice.GetDisplayName() << "' can't use Ch" << DEC(mConfig.fOutputChannel+1)
                << " -- only supports Ch1" << (maxNumChannels > 1  ?  string("-Ch") + string(1, char(maxNumChannels+'0'))  :  "") << endl;
        return AJA_STATUS_UNSUPPORTED;
    }

    if (!mConfig.fDoMultiFormat)
    {
        mDevice.GetTaskMode(mSavedTaskMode);    //  Save the current task mode
        if (!mDevice.AcquireStreamForApplication (kDemoAppSignature, int32_t(AJAProcess::GetPid())))
            return AJA_STATUS_BUSY; //  Device is in use by another app -- fail
    }
    mDevice.SetTaskMode(NTV2_OEM_TASKS);    //  Set OEM service level

    if (mDevice.features().CanDoMultiFormat())
        mDevice.SetMultiFormatMode(mConfig.fDoMultiFormat);
    else
        mConfig.fDoMultiFormat = false;

    if (!mConfig.fDolbyFilePath.empty())
    {
        status = mDolbyFileIO.Open(mConfig.fDolbyFilePath.c_str(), eAJAReadOnly, 0);
        if (status != AJA_STATUS_SUCCESS)
            {cerr << "## ERROR:  Could not open file: " << mConfig.fDolbyFilePath << endl;  return status;}
    }

    //  Set up the video and audio...
    status = SetUpVideo();
    if (AJA_FAILURE(status))
        return status;
    status = mConfig.WithAudio() ? SetUpAudio() : AJA_STATUS_SUCCESS;
    if (AJA_FAILURE(status))
        return status;

    //  Set up the circular buffers, and the test pattern buffers...
    status = SetUpHostBuffers();
    if (AJA_FAILURE(status))
        return status;
    status = SetUpTestPatternBuffers();
    if (AJA_FAILURE(status))
        return status;

    //  Set up the device signal routing...
    if (!RouteOutputSignal())
        return AJA_STATUS_FAIL;

    //  Lastly, prepare my AJATimeCodeBurn instance...
    if (!mTCBurner.RenderTimeCodeFont (CNTV2DemoCommon::GetAJAPixelFormat(mConfig.fPixelFormat), mFormatDesc.numPixels, mFormatDesc.numLines))
        {cerr << "## ERROR:  RenderTimeCodeFont failed for:  " << mFormatDesc << endl;  return AJA_STATUS_UNSUPPORTED;}

    //  Ready to go...
    #if defined(_DEBUG)
        cerr << mConfig;
        if (mDevice.IsRemote())
            cerr    << "Device Description:  " << mDevice.GetDescription() << endl;
        cerr << endl;
    #endif  //  defined(_DEBUG)
    return AJA_STATUS_SUCCESS;

}   //  Init


AJAStatus NTV2DolbyPlayer::SetUpVideo (void)
{
    //  Configure the device to output the requested video format...
    if (mConfig.fVideoFormat == NTV2_FORMAT_UNKNOWN)
        return AJA_STATUS_BAD_PARAM;

    if (!mDevice.features().CanDoVideoFormat(mConfig.fVideoFormat))
    {   cerr    << "## ERROR:  '" << mDevice.GetDisplayName() << "' doesn't support "
                << ::NTV2VideoFormatToString(mConfig.fVideoFormat) << endl;
        return AJA_STATUS_UNSUPPORTED;
    }
    if (!mDevice.features().CanDoFrameBufferFormat(mConfig.fPixelFormat))
    {   cerr    << "## ERROR: '" << mDevice.GetDisplayName() << "' doesn't support "
                << ::NTV2FrameBufferFormatString(mConfig.fPixelFormat) << endl;
        return AJA_STATUS_UNSUPPORTED;
    }

    //  Keep the raster description handy...
    mFormatDesc = NTV2FormatDescriptor(mConfig.fVideoFormat, mConfig.fPixelFormat);
    if (!mFormatDesc.IsValid())
        return AJA_STATUS_FAIL;

    //  Turn on the FrameStore (to read frame buffer memory and transmit video)...
    mDevice.EnableChannel(mConfig.fOutputChannel);

    //  This demo assumes VANC is disabled...
    mDevice.SetVANCMode(NTV2_VANCMODE_OFF, mConfig.fOutputChannel);
    mDevice.SetVANCShiftMode(mConfig.fOutputChannel, NTV2_VANCDATA_NORMAL);

    //  Set the FrameStore video format...
    mDevice.SetVideoFormat (mConfig.fVideoFormat, false, false, mConfig.fOutputChannel);

    //  Set the frame buffer pixel format for the device FrameStore...
    mDevice.SetFrameBufferFormat (mConfig.fOutputChannel, mConfig.fPixelFormat);

        //  The output interrupt is Enabled by default, but on some platforms, you must subscribe to it
    //  in order to be able to wait on its event/semaphore...
    mDevice.SubscribeOutputVerticalEvent (mConfig.fOutputChannel);

    //  Set output clock reference...
    mDevice.SetReference(mDevice.features().CanDo2110() ? NTV2_REFERENCE_SFP1_PTP : NTV2_REFERENCE_FREERUN);

    return AJA_STATUS_SUCCESS;

}   //  SetUpVideo


AJAStatus NTV2DolbyPlayer::SetUpAudio (void)
{
    mAudioSystem = NTV2_AUDIOSYSTEM_1;                                      //  Use NTV2_AUDIOSYSTEM_1...
    if (mDevice.features().GetNumAudioSystems() > 1)                        //  ...but if the device has more than one audio system...
        mAudioSystem = ::NTV2ChannelToAudioSystem(mConfig.fOutputChannel);  //  ...base it on the channel
    //  However, there are a few older devices that have only 1 audio system,
    //  yet 2 frame stores (or must use channel 2 for playout)...
    if (!mDevice.features().CanDoFrameStore1Display())
        mAudioSystem = NTV2_AUDIOSYSTEM_1;

    mDevice.SetNumberAudioChannels (8, mAudioSystem);   //  This demo uses 8 channels -- no more, no less
    mDevice.SetAudioRate (mAudioRate, mAudioSystem);

    //  How big should the on-device audio buffer be?   1MB? 2MB? 4MB? 8MB?
    //  For this demo, 4MB will work best across all platforms (Windows, Mac & Linux)...
    mDevice.SetAudioBufferSize (NTV2_AUDIO_BUFFER_BIG, mAudioSystem);

    //  Set the SDI output audio embedders to embed audio samples from the output of mAudioSystem...
    mDevice.SetHDMIOutAudioSource2Channel (NTV2_AudioChannel1_2, mAudioSystem);

    mDevice.SetHDMIOutAudioRate(mAudioRate);

     mDevice.SetHDMIOutAudioFormat(mDolbyFileIO.IsOpen() ? NTV2_AUDIO_FORMAT_DOLBY : NTV2_AUDIO_FORMAT_LPCM);

    //  If the last app using the device left it in end-to-end mode (input passthru),
    //  then loopback must be disabled, or else the output will contain whatever audio
    //  is present in whatever signal is feeding the device's SDI input...
    mDevice.SetAudioLoopBack (NTV2_AUDIO_LOOPBACK_OFF, mAudioSystem);

    return AJA_STATUS_SUCCESS;

}   //  SetUpAudio


AJAStatus NTV2DolbyPlayer::SetUpHostBuffers (void)
{
    CNTV2DemoCommon::SetDefaultPageSize();  //  Set host-specific page size

    //  Let my circular buffer know when it's time to quit...
    mFrameDataRing.SetAbortFlag (&mGlobalQuit);

    //  Calculate the size of the audio buffer, which mostly depends on the sample rate...
    const uint32_t AUDIOBYTES_MAX = (mAudioRate == NTV2_AUDIO_192K) ? AUDIOBYTES_MAX_192K : AUDIOBYTES_MAX_48K;

    //  Allocate and add each in-host NTV2FrameData to my circular buffer member variable...
    mHostBuffers.reserve(CIRCULAR_BUFFER_SIZE);
    while (mHostBuffers.size() < CIRCULAR_BUFFER_SIZE)
    {
        mHostBuffers.push_back(NTV2FrameData());        //  Make a new NTV2FrameData...
        NTV2FrameData & frameData(mHostBuffers.back()); //  ...and get a reference to it

        //  Allocate a page-aligned video buffer
        if (mConfig.WithVideo())
            if (!frameData.fVideoBuffer.Allocate (mFormatDesc.GetTotalBytes(), BUFFER_PAGE_ALIGNED))
            {
                PLFAIL("Failed to allocate " << xHEX0N(mFormatDesc.GetTotalBytes(),8) << "-byte video buffer");
                return AJA_STATUS_MEMORY;
            }
        #ifdef NTV2_BUFFER_LOCKING
        if (frameData.fVideoBuffer)
            mDevice.DMABufferLock(frameData.fVideoBuffer, true);
        #endif

        //  Allocate a page-aligned audio buffer (if transmitting audio)
        if (mConfig.WithAudio())
            if (!frameData.fAudioBuffer.Allocate (AUDIOBYTES_MAX, BUFFER_PAGE_ALIGNED))
            {
                PLFAIL("Failed to allocate " << xHEX0N(AUDIOBYTES_MAX,8) << "-byte audio buffer");
                return AJA_STATUS_MEMORY;
            }
        #ifdef NTV2_BUFFER_LOCKING
        if (frameData.fAudioBuffer)
            mDevice.DMABufferLock(frameData.fAudioBuffer, /*alsoPreLockSGL*/true);
        #endif
        mFrameDataRing.Add (&frameData);
    }   //  for each NTV2FrameData
    
    if (mDolbyFileIO.IsOpen())
    {
        //  Initialize IEC61937 burst size (32 milliseconds) for HDMI 192 kHz sample rate
        mBurstSamples = 6144;  //  192000 * 0.032 samples
        mBurstMax = mBurstSamples * 2;
        mBurstBuffer = new uint16_t [mBurstMax];
        mDolbyBuffer = new uint16_t [mBurstMax];
    }

    return AJA_STATUS_SUCCESS;

}   //  SetUpHostBuffers

AJAStatus NTV2DolbyPlayer::SetUpTestPatternBuffers (void)
{
    vector<NTV2TestPatternSelect>   testPatIDs;
        testPatIDs.push_back(NTV2_TestPatt_ColorBars100);
        testPatIDs.push_back(NTV2_TestPatt_ColorBars75);
        testPatIDs.push_back(NTV2_TestPatt_Ramp);
        testPatIDs.push_back(NTV2_TestPatt_MultiBurst);
        testPatIDs.push_back(NTV2_TestPatt_LineSweep);
        testPatIDs.push_back(NTV2_TestPatt_CheckField);
        testPatIDs.push_back(NTV2_TestPatt_FlatField);
        testPatIDs.push_back(NTV2_TestPatt_MultiPattern);

    mTestPatRasters.clear();
    for (size_t tpNdx(0);  tpNdx < testPatIDs.size();  tpNdx++)
        mTestPatRasters.push_back(NTV2Buffer());

    if (!mFormatDesc.IsValid())
        {PLFAIL("Bad format descriptor");  return AJA_STATUS_FAIL;}
    if (mFormatDesc.IsVANC())
        {PLFAIL("VANC should have been disabled: " << mFormatDesc);  return AJA_STATUS_FAIL;}

    //  Set up one video buffer for each test pattern...
    for (size_t tpNdx(0);  tpNdx < testPatIDs.size();  tpNdx++)
    {
        //  Allocate the buffer memory...
        if (!mTestPatRasters.at(tpNdx).Allocate (mFormatDesc.GetTotalBytes(), BUFFER_PAGE_ALIGNED))
        {   PLFAIL("Test pattern buffer " << DEC(tpNdx+1) << " of " << DEC(testPatIDs.size()) << ": "
                    << xHEX0N(mFormatDesc.GetTotalBytes(),8) << "-byte page-aligned alloc failed");
            return AJA_STATUS_MEMORY;
        }

        //  Fill the buffer with test pattern...
        NTV2TestPatternGen  testPatternGen;
        if (!testPatternGen.DrawTestPattern (testPatIDs.at(tpNdx),  mFormatDesc,  mTestPatRasters.at(tpNdx)))
        {
            cerr << "## ERROR:  DrawTestPattern " << DEC(tpNdx) << " failed: " << mFormatDesc << endl;
            return AJA_STATUS_FAIL;
        }

        #ifdef NTV2_BUFFER_LOCKING
            //  Try to prelock the memory, including its scatter-gather list...
            if (!mDevice.DMABufferLock(mTestPatRasters.at(tpNdx), /*alsoLockSegmentMap=*/true))
                PLWARN("Test pattern buffer " << DEC(tpNdx+1) << " of " << DEC(testPatIDs.size()) << ": failed to pre-lock");
        #endif
    }   //  loop for each predefined pattern

    return AJA_STATUS_SUCCESS;

}   //  SetUpTestPatternBuffers


bool NTV2DolbyPlayer::RouteOutputSignal (void)
{
    const bool isRGB (::IsRGBFormat(mConfig.fPixelFormat));
    const NTV2OutputXptID fsVidOutXpt (::GetFrameStoreOutputXptFromChannel (mConfig.fOutputChannel, isRGB, false/*is425*/));

    mDevice.ClearRouting();     //  Start with clean slate

    //  Connect HDMI video output...
    return mDevice.Connect (::GetOutputDestInputXpt(NTV2_OUTPUTDESTINATION_HDMI1), fsVidOutXpt);

}   //  RouteOutputSignal


AJAStatus NTV2DolbyPlayer::Run (void)
{
    //  Start my consumer and producer threads...
    StartConsumerThread();
    StartProducerThread();
    return AJA_STATUS_SUCCESS;

}   //  Run



//  This is where the play thread starts

void NTV2DolbyPlayer::StartConsumerThread ()
{
    //  Create and start the playout thread...
    mConsumerThread.Attach (ConsumerThreadStatic, this);
    mConsumerThread.SetPriority (AJA_ThreadPriority_High);
    mConsumerThread.Start ();

}   //  StartConsumerThread


//  The playout thread function
void NTV2DolbyPlayer::ConsumerThreadStatic (AJAThread * pThread, void * pContext)       //  static
{   (void) pThread;
    //  Grab the NTV2DolbyPlayer instance pointer from the pContext parameter,
    //  then call its ConsumeFrames method...
    NTV2DolbyPlayer * pApp (reinterpret_cast<NTV2DolbyPlayer*>(pContext));
    if (pApp)
        pApp->ConsumeFrames();

}   //  ConsumerThreadStatic


void NTV2DolbyPlayer::ConsumeFrames (void)
{
    AUTOCIRCULATE_TRANSFER  outputXfer;
    AUTOCIRCULATE_STATUS    outputStatus;
    ULWord                  goodXfers(0), badXfers(0), starves(0), noRoomWaits(0);

    //  Stop AutoCirculate, just in case someone else left it running...
    mDevice.AutoCirculateStop(mConfig.fOutputChannel);
    mDevice.WaitForOutputVerticalInterrupt(mConfig.fOutputChannel, 4);  //  Let it stop
    PLNOTE("Thread started");

    //  Initialize & start AutoCirculate...
    bool initOK = mDevice.AutoCirculateInitForOutput (mConfig.fOutputChannel,  mConfig.fFrames.count(),
                                                        mAudioSystem,  AUTOCIRCULATE_WITH_RP188,  /*numChannels*/ 1,
                                                        mConfig.fFrames.firstFrame(),  mConfig.fFrames.lastFrame());
    if (!initOK)
        {PLFAIL("AutoCirculateInitForOutput failed");  mGlobalQuit = true;}
    else if (!mConfig.WithVideo())
    {   //  Video suppressed --
        //  Clear device frame buffers being AutoCirculated (prevent garbage output frames)
        NTV2Buffer tmpFrame (mFormatDesc.GetVideoWriteSize());
        NTV2TestPatternGen blackPatternGen;
        blackPatternGen.DrawTestPattern (NTV2_TestPatt_Black, mFormatDesc, tmpFrame);
        mDevice.AutoCirculateGetStatus (mConfig.fOutputChannel, outputStatus);
        for (uint16_t frmNum(outputStatus.GetStartFrame());  frmNum <= outputStatus.GetEndFrame();  frmNum++)
            mDevice.DMAWriteFrame(ULWord(frmNum), tmpFrame, mFormatDesc.GetTotalBytes());
    }   //  else if --novideo


    while (!mGlobalQuit)
    {
        mDevice.AutoCirculateGetStatus (mConfig.fOutputChannel, outputStatus);

        //  Check if there's room for another frame on the card...
        if (outputStatus.CanAcceptMoreOutputFrames())
        {
            //  Device has at least one free frame buffer that can be filled.
            //  Wait for the next frame in our ring to become ready to "consume"...
            NTV2FrameData * pFrameData (mFrameDataRing.StartConsumeNextBuffer());
            if (!pFrameData)
                {starves++;  continue;}

            outputXfer.SetOutputTimeCodes(pFrameData->fTimecodes);

            if (pFrameData->VideoBuffer())  //  Transfer the timecode-burned frame to the device for playout...
                outputXfer.SetVideoBuffer (pFrameData->VideoBuffer(), pFrameData->VideoBufferSize());
            if (pFrameData->AudioBuffer())  //  If also playing audio...
                outputXfer.SetAudioBuffer (pFrameData->AudioBuffer(), pFrameData->fNumAudioBytes);


            //  Perform the DMA transfer to the device...
            if (mDevice.AutoCirculateTransfer (mConfig.fOutputChannel, outputXfer))
                goodXfers++;
            else
                badXfers++;

            if (goodXfers == 3)
                mDevice.AutoCirculateStart(mConfig.fOutputChannel);

            //  Signal that the frame has been "consumed"...
            mFrameDataRing.EndConsumeNextBuffer();
            continue;   //  Back to top of while loop

        }

        //  Wait for one or more buffers to become available on the device, which should occur at next VBI...
        noRoomWaits++;
        mDevice.WaitForOutputVerticalInterrupt(mConfig.fOutputChannel);
    }   //  loop til quit signaled

        //  Stop AutoCirculate...
    mDevice.AutoCirculateStop(mConfig.fOutputChannel);
    PLNOTE("Thread completed: " << DEC(goodXfers) << " xfers, " << DEC(badXfers) << " failed, "
            << DEC(starves) << " starves, " << DEC(noRoomWaits) << " VBI waits");

}   //  ConsumeFrames



//  This is where the producer thread starts

void NTV2DolbyPlayer::StartProducerThread ()
{
    //  Create and start the producer thread...
    mProducerThread.Attach(ProducerThreadStatic, this);
    mProducerThread.SetPriority(AJA_ThreadPriority_High);
    mProducerThread.Start();

}   //  StartProducerThread


void NTV2DolbyPlayer::ProducerThreadStatic (AJAThread * pThread, void * pContext)       //  static
{
    (void) pThread;
    NTV2DolbyPlayer *   pApp    (reinterpret_cast <NTV2DolbyPlayer *> (pContext));
    if (pApp)
        pApp->ProduceFrames ();

}   //  ProducerThreadStatic


void NTV2DolbyPlayer::ProduceFrames (void)
{
    ULWord  freqNdx(0), testPatNdx(0), badTally(0);
    double  timeOfLastSwitch    (0.0);

    const AJATimeBase       timeBase        (CNTV2DemoCommon::GetAJAFrameRate(::GetNTV2FrameRateFromVideoFormat(mConfig.fVideoFormat)));
    const NTV2StringList    tpNames         (NTV2TestPatternGen::getTestPatternNames());
    //const bool                isInterlace     (!NTV2_VIDEO_FORMAT_HAS_PROGRESSIVE_PICTURE(mConfig.fVideoFormat));
    //const bool                isPAL           (NTV2_IS_PAL_VIDEO_FORMAT(mConfig.fVideoFormat));
    const NTV2FrameRate     ntv2FrameRate   (::GetNTV2FrameRateFromVideoFormat(mConfig.fVideoFormat));
    const TimecodeFormat    tcFormat        (CNTV2DemoCommon::NTV2FrameRate2TimecodeFormat(ntv2FrameRate));

    PLNOTE("Thread started");
    while (!mGlobalQuit)
    {
        NTV2FrameData * pFrameData (mFrameDataRing.StartProduceNextBuffer());
        //  If no frame is available, wait and try again
        if (!pFrameData)
        {   badTally++;         //  No frame available!
            AJATime::Sleep(10); //  Wait a bit for the consumer thread to free one up for me...
            continue;           //  ...then try again
        }

        //  Copy my pre-made test pattern into my video buffer...
        if (pFrameData->VideoBuffer())  //  Copy fresh, unmodified, pre-rendered test pattern into this frame's video buffer...
            pFrameData->fVideoBuffer.CopyFrom (mTestPatRasters.at(testPatNdx),
                                                /*srcOffset*/ 0,
                                                /*dstOffset*/ 0,
                                                /*byteCount*/ pFrameData->fVideoBuffer.GetByteCount());

        const   CRP188  rp188Info       (mCurrentFrame++, 0, 0, 10, tcFormat);
        NTV2_RP188      tcF1;
        string          tcString;

        rp188Info.GetRP188Reg (tcF1);
        rp188Info.GetRP188Str (tcString);

        if (pFrameData->VideoBuffer())  //  Burn current timecode into the video buffer...
            mTCBurner.BurnTimeCode (pFrameData->VideoBuffer(), tcString.c_str(), 80);
        TCDBG("F" << DEC0N(mCurrentFrame-1,6) << ": " << tcF1 << ": " << tcString);

        //  If also playing audio...
        if (pFrameData->AudioBuffer())  //  ...then generate audio tone data for this frame...
        {
            if (mDolbyFileIO.IsOpen())
                pFrameData->fNumAudioBytes = AddDolby(*pFrameData);
            else
            {
                if (mConfig.fDoRamp)
                    pFrameData->fNumAudioBytes = AddRamp(*pFrameData);
                else
                    pFrameData->fNumAudioBytes = AddTone(*pFrameData);
            }
        }

        //  Every few seconds, change the test pattern and tone frequency...
        const double currentTime (timeBase.FramesToSeconds(mCurrentFrame));
        if (currentTime > timeOfLastSwitch + 4.0)
        {
            freqNdx = (freqNdx + 1) % gNumFrequencies;
            testPatNdx = (testPatNdx + 1) % ULWord(mTestPatRasters.size());
            mToneFrequency = gFrequencies[freqNdx];
            timeOfLastSwitch = currentTime;
            PLINFO("F" << DEC0N(mCurrentFrame,6) << ": " << tcString << ": tone=" << mToneFrequency << "Hz, pattern='" << tpNames.at(testPatNdx) << "'");
        }   //  if time to switch test pattern & tone frequency

        //  Signal that I'm done producing this FrameData, making it immediately available for transfer/playout...
        mFrameDataRing.EndProduceNextBuffer();

    }   //  loop til mGlobalQuit goes true
    PLNOTE("Thread completed: " << DEC(mCurrentFrame) << " frame(s) produced, " << DEC(badTally) << " failed");

}   //  ProduceFrames

void NTV2DolbyPlayer::GetACStatus (AUTOCIRCULATE_STATUS & outStatus)
{
    mDevice.AutoCirculateGetStatus (mConfig.fOutputChannel, outStatus);
}


uint32_t NTV2DolbyPlayer::AddTone (NTV2FrameData &  inFrameData)
{
    NTV2FrameRate   frameRate   (NTV2_FRAMERATE_INVALID);
    NTV2AudioRate   audioRate   (NTV2_AUDIO_RATE_INVALID);
    ULWord          numChannels (0);

    mDevice.GetFrameRate (frameRate, mConfig.fOutputChannel);
    mDevice.GetAudioRate (audioRate, mAudioSystem);
    mDevice.GetNumberAudioChannels (numChannels, mAudioSystem);

    //  Set per-channel tone frequencies...
    double  pFrequencies [kNumAudioChannelsMax];
    pFrequencies [0] = (mToneFrequency / 2.0);
    for (ULWord chan (1);  chan < numChannels;  chan++)
        //  The 1.154782 value is the 16th root of 10, to ensure that if mToneFrequency is 2000,
        //  that the calculated frequency of audio channel 16 will be 20kHz...
        pFrequencies [chan] = pFrequencies [chan - 1] * 1.154782;

    //  Because audio on AJA devices use fixed sample rates (typically 48KHz), certain video frame rates will necessarily
    //  result in some frames having more audio samples than others. The GetAudioSamplesPerFrame function
    //  is used to calculate the correct sample count...
    const ULWord    numSamples      (::GetAudioSamplesPerFrame (frameRate, audioRate, mCurrentFrame));
    const double    sampleRateHertz (::GetAudioSamplesPerSecond(audioRate));

    return ::AddAudioTone ( inFrameData.AudioBuffer(),  //  audio buffer to fill
                            mCurrentSample,             //  which sample for continuing the waveform
                            numSamples,                 //  number of samples to generate
                            sampleRateHertz,            //  sample rate [Hz]
                            gAmplitudes,                //  per-channel amplitudes
                            pFrequencies,               //  per-channel tone frequencies [Hz]
                            31,                         //  bits per sample
                            false,                      //  don't byte swap
                            numChannels);               //  number of audio channels to generate
}   //  AddTone

uint32_t NTV2DolbyPlayer::AddRamp (NTV2FrameData & inFrameData)
{
    ULWord *        audioBuffer (inFrameData.AudioBuffer());
    NTV2FrameRate   frameRate   (NTV2_FRAMERATE_INVALID);
    NTV2AudioRate   audioRate   (NTV2_AUDIO_RATE_INVALID);
    ULWord          numChannels (0);

    mDevice.GetFrameRate (frameRate, mConfig.fOutputChannel);
    mDevice.GetAudioRate (audioRate, mAudioSystem);
    mDevice.GetNumberAudioChannels (numChannels, mAudioSystem);

    //  Because audio on AJA devices use fixed sample rates (typically 48KHz), certain video frame rates will necessarily
    //  result in some frames having more audio samples than others. The GetAudioSamplesPerFrame function
    //  is used to calculate the correct sample count...
    const ULWord numSamples (::GetAudioSamplesPerFrame (frameRate, audioRate, mCurrentFrame));

    for (uint32_t samp(0);  samp < numSamples;  samp++)
    {
        for (uint32_t ch(0);  ch < numChannels;  ch++)
        {
            *audioBuffer = uint32_t(mRampSample) << 16;
            audioBuffer++;
            mRampSample++;
        }   //  for each channel
    }   //  for each sample

    return numSamples * numChannels * 4;
}   //  AddRamp

#if defined(DOLBY_FULL_PARSER)

uint32_t NTV2DolbyPlayer::AddDolby (NTV2FrameData & inFrameData)
{
    ULWord*         audioBuffer (inFrameData.AudioBuffer());
    NTV2FrameRate   frameRate   (NTV2_FRAMERATE_INVALID);
    NTV2AudioRate   audioRate   (NTV2_AUDIO_RATE_INVALID);
    ULWord          numChannels (0);
    ULWord          sampleOffset(0);
    ULWord          sampleCount (0);
    NTV2DolbyBSI    bsi;

    mDevice.GetFrameRate (frameRate, mConfig.fOutputChannel);
    mDevice.GetAudioRate (audioRate, mAudioSystem);
    mDevice.GetNumberAudioChannels (numChannels, mAudioSystem);
    const ULWord    numSamples      (::GetAudioSamplesPerFrame (frameRate, audioRate, mCurrentFrame));

    if (!mDolbyFileIO.IsOpen() || !mDolbyBuffer)
        goto silence;

    //  Generate the samples for this frame
    while (sampleOffset < numSamples)
    {
        if ((mBurstSize != 0) && (mBurstIndex < mBurstSamples))
        {
            if(mBurstOffset < mBurstSize)
            {
                uint32_t data0 = 0;
                uint32_t data1 = 0;
                if (mBurstIndex == 0)
                {
                    //  Add IEC61937 burst preamble
                    data0 = 0xf872;             //  Sync stuff
                    data1 = 0x4e1f;
                }
                else if (mBurstIndex == 1)
                {
                    //  Add more IEC61937 burst preamble
                    data0 = ((bsi.bsmod & 0x7) << 8) | 0x0015;  //  This is Dolby
                    data1 = mBurstSize * 2;                     //  Data size in bytes
                }
                else
                {
                    //  Add sync frame data
                    data0 = (uint32_t)(mBurstBuffer[mBurstOffset]);
                    data0 = ((data0 & 0x00ff) << 8) | ((data0 & 0xff00) >> 8);
                    mBurstOffset++;
                    data1 = (uint32_t)(mBurstBuffer[mBurstOffset]);
                    data1 = ((data1 & 0x00ff) << 8) | ((data1 & 0xff00) >> 8);
                    mBurstOffset++;
                }

                //  Write data into 16 msbs of all audio channel pairs
                data0 <<= 16;
                data1 <<= 16;
                for (ULWord i = 0; i < numChannels; i += 2)
                {
                    audioBuffer[sampleOffset * numChannels + i] = data0;
                    audioBuffer[sampleOffset * numChannels + i + 1] = data1;
                }
            }
            else
            {
                //  Pad samples out to burst size
                for (ULWord i = 0; i < numChannels; i++)
                {
                    audioBuffer[sampleOffset * numChannels + i] = 0;
                }
            }
            sampleOffset++;
            mBurstIndex++;
        }
        else
        {
            ULWord dolbyOffset = 0;
            ULWord burstOffset = 0;
            ULWord numBlocks = 0;

            mBurstIndex = 0;
            mBurstOffset = 0;

            if (mDolbySize == 0)
            {
                // Find first Dolby Digital Plus burst frame
                while (true)
                {
                    if (!GetDolbyFrame(&mDolbyBuffer[0], sampleCount))
                    {
                        cerr << "## ERROR:  Dolby frame not found" << endl;
                        mDolbyFileIO.Close();
                        goto silence;
                    }

                    if (!ParseBSI(&mDolbyBuffer[1], sampleCount - 1, &bsi))
                        continue;

                    if ((bsi.strmtyp == 0) &&
                        (bsi.substreamid == 0) &&
                        (bsi.bsid == 16) &&
                        ((bsi.numblkscod == 3) || (bsi.convsync == 1)))
                        break;
                }

                mDolbySize = sampleCount;
                switch (bsi.numblkscod)
                {
                case 0: mDolbyBlocks = 1; break;
                case 1: mDolbyBlocks = 2; break;
                case 2: mDolbyBlocks = 3; break;
                case 3: mDolbyBlocks = 6; break;
                default: goto silence;
                }
            }

            while (numBlocks <= 6)
            {
                // Copy the Dolby frame into the burst buffer
                while (dolbyOffset < mDolbySize)
                {
                    // Check for burst size overrun
                    if (burstOffset >= mBurstMax)
                    {
                        cerr << "## ERROR:  Dolby burst too large" << endl;
                        mDolbyFileIO.Close();
                        goto silence;
                    }

                    // Copy sample
                    mBurstBuffer[burstOffset] = mDolbyBuffer[dolbyOffset];
                    burstOffset++;
                    dolbyOffset++;
                }

                // Get the next Dolby frame
                if (!GetDolbyFrame(&mDolbyBuffer[0], sampleCount))
                {
                    // try to loop
                    if (!GetDolbyFrame(&mDolbyBuffer[0], sampleCount))
                    {
                        cerr << "## ERROR:  Dolby frame not found" << endl;
                        mDolbyFileIO.Close();
                        goto silence;
                    }
                }

                // Parse the Dolby bitstream header
                if (!ParseBSI(&mDolbyBuffer[1], sampleCount - 1, &bsi))
                    continue;

                // Only Dolby Digital Plus
                if (bsi.bsid != 16)
                {
                    cerr << "## ERROR:  Dolby frame bad bsid = " << bsi.bsid << endl;
                    continue;
                }

                mDolbySize = sampleCount;
                dolbyOffset = 0;

                // Increment block count on first substream
                if ((bsi.strmtyp == 0) && (bsi.substreamid == 0))
                {
                    // increment block count
                    numBlocks += mDolbyBlocks;

                    switch (bsi.numblkscod)
                    {
                    case 0: mDolbyBlocks = 1; break;
                    case 1: mDolbyBlocks = 2; break;
                    case 2: mDolbyBlocks = 3; break;
                    case 3: mDolbyBlocks = 6; break;
                    default:
                        cerr << "## ERROR:  Dolby frame bad numblkscod = " << bsi.numblkscod << endl;
                        goto silence;
                    }
                }

                //  Are we done?
                if (numBlocks >= 6)
                {
                    // First frame of new burst must have convsync == 1
                    if ((bsi.numblkscod != 3) &&
                        (bsi.convsync != 1))
                    {
                        cerr << "## ERROR:  Dolby frame unexpected convsync = " << bsi.convsync << endl;
                        mDolbySize = 0;
                        mDolbyBlocks = 0;
                    }

                    //  Keep the burst size
                    mBurstSize = burstOffset;
                    break;
                }
            }
        }
    }

    return numSamples * numChannels * 4;

silence:
    //  Output silence when done with file
    memset(&audioBuffer[sampleOffset * numChannels], 0, (numSamples - sampleOffset) * numChannels * 4);
    return numSamples * numChannels * 4;
}


bool NTV2DolbyPlayer::GetDolbyFrame (uint16_t * pInDolbyBuffer, uint32_t & numSamples)
{
    uint32_t bytes;
    bool done = false;

    while (!done)
    {
        bytes = mDolbyFileIO.Read((uint8_t*)(&pInDolbyBuffer[0]), 2);
        if (bytes != 2)
        {
            //  Reset file
            mDolbyFileIO.Seek(0, eAJASeekSet);
            return false;
        }

        //  Check sync word
        if ((mDolbyBuffer[0] == 0x7705) ||
            (mDolbyBuffer[0] == 0x770b))
            done = true;
    }

    //  Read more of the sync frame header
    bytes = mDolbyFileIO.Read((uint8_t*)(&pInDolbyBuffer[1]), 4);
    if (bytes != 4)
        return false;

    //  Get frame size - 16 bit words plus sync word
    uint32_t size = (uint32_t)mDolbyBuffer[1];
    size = (((size & 0x00ff) << 8) | ((size & 0xff00) >> 8));
    size = (size & 0x7ff) + 1;

    //  Read the rest of the sync frame
    uint32_t len = (size - 3) * 2;
    bytes = mDolbyFileIO.Read((uint8_t*)(&pInDolbyBuffer[3]), len);
    if (bytes != len)
        return false;

    numSamples = size;

    return true;
}


bool NTV2DolbyPlayer::ParseBSI(uint16_t * pInDolbyBuffer, uint32_t numSamples, NTV2DolbyBSI * pBsi)
{
    if ((pInDolbyBuffer == NULL) || (pBsi == NULL))
        return false;

    memset(pBsi, 0, sizeof(NTV2DolbyBSI));

    SetBitBuffer((uint8_t*)pInDolbyBuffer, numSamples * 2);

    if (!GetBits(pBsi->strmtyp, 2)) return false;
    if (!GetBits(pBsi->substreamid, 3)) return false;
    if (!GetBits(pBsi->frmsiz, 11)) return false;
    if (!GetBits(pBsi->fscod, 2)) return false;
    if (!GetBits(pBsi->numblkscod, 2)) return false;
    if (!GetBits(pBsi->acmod, 3)) return false;
    if (!GetBits(pBsi->lfeon, 1)) return false;
    if (!GetBits(pBsi->bsid, 5)) return false;
    if (!GetBits(pBsi->dialnorm, 5)) return false;
    if (!GetBits(pBsi->compre, 1)) return false;
    if (pBsi->compre)
    {
        if (!GetBits(pBsi->compr, 8)) return false;
    }
    if (pBsi->acmod == 0x0) /* if 1+1 mode (dual mono, so some items need a second value) */
    {
        if (!GetBits(pBsi->dialnorm2, 5)) return false;
        if (!GetBits(pBsi->compr2e, 1)) return false;
        if (pBsi->compr2e)
        {
            if (!GetBits(pBsi->compr2, 8)) return false;
        }
    }
    if (pBsi->strmtyp == 0x1) /* if dependent stream */
    {
        if (!GetBits(pBsi->chanmape, 1)) return false;
        if (pBsi->chanmape)
        {
            if (!GetBits(pBsi->chanmap, 16)) return false;
        }
    }
    if (!GetBits(pBsi->mixmdate, 1)) return false;
    if (pBsi->mixmdate) /* mixing metadata */
    {
        if (pBsi->acmod > 0x2) /* if more than 2 channels */
        {
            if (!GetBits(pBsi->dmixmod, 2)) return false;
        }
        if ((pBsi->acmod & 0x1) && (pBsi->acmod > 0x2)) /* if three front channels exist */
        {
            if (!GetBits(pBsi->ltrtcmixlev, 3)) return false;
            if (!GetBits(pBsi->lorocmixlev, 3)) return false;
        }
        if (pBsi->acmod & 0x4) /* if a surround channel exists */
        {
            if (!GetBits(pBsi->ltrtsurmixlev, 3)) return false;
            if (!GetBits(pBsi->lorosurmixlev, 3)) return false;
        }
        if (pBsi->lfeon) /* if the LFE channel exists */
        {
            if (!GetBits(pBsi->lfemixlevcode, 1)) return false;
            if (pBsi->lfemixlevcode)
            {
                         if (!GetBits(pBsi->lfemixlevcod, 5)) return false;
            }
        }
        if (pBsi->strmtyp == 0x0) /* if independent stream */
        {
            if (!GetBits(pBsi->pgmscle, 1)) return false;
            if (pBsi->pgmscle)
            {
                if (!GetBits(pBsi->pgmscl, 6)) return false;
            }
            if (pBsi->acmod == 0x0) /* if 1+1 mode (dual mono, so some items need a second value) */
            {
                if (!GetBits(pBsi->pgmscl2e, 1)) return false;
                if (pBsi->pgmscl2e)
                {
                    if (!GetBits(pBsi->pgmscl2, 6)) return false;
                }
            }
            if (!GetBits(pBsi->extpgmscle, 1)) return false;
            if (pBsi->extpgmscle)
            {
                if (!GetBits(pBsi->extpgmscl, 6)) return false;
            }
            if (!GetBits(pBsi->mixdef, 2)) return false;
            if (pBsi->mixdef == 0x1) /* mixing option 2 */
            {
                if (!GetBits(pBsi->premixcmpsel, 1)) return false;
                if (!GetBits(pBsi->drcsrc, 1)) return false;
                if (!GetBits(pBsi->premixcmpscl, 3)) return false;
            }
            else if (pBsi->mixdef == 0x2) /* mixing option 3 */
            {
                if (!GetBits(pBsi->mixdata, 12)) return false;
            }
            else if (pBsi->mixdef == 0x3) /* mixing option 4 */
            {
                if (!GetBits(pBsi->mixdeflen, 5)) return false;
                if (!GetBits(pBsi->mixdata2e, 1)) return false;
                if (pBsi->mixdata2e)
                {
                    if (!GetBits(pBsi->premixcmpsel, 1)) return false;
                    if (!GetBits(pBsi->drcsrc, 1)) return false;
                    if (!GetBits(pBsi->premixcmpscl, 3)) return false;
                    if (!GetBits(pBsi->extpgmlscle, 1)) return false;
                    if (pBsi->extpgmlscle)
                    {
                        if (!GetBits(pBsi->extpgmlscl, 4)) return false;
                    }
                    if (!GetBits(pBsi->extpgmcscle, 1)) return false;
                    if (pBsi->extpgmcscle)
                    {
                        if (!GetBits(pBsi->extpgmcscl, 4)) return false;
                    }
                    if (!GetBits(pBsi->extpgmrscle, 1)) return false;
                    if (pBsi->extpgmrscle)
                    {
                        if (!GetBits(pBsi->extpgmrscl, 4)) return false;
                    }
                    if (!GetBits(pBsi->extpgmlsscle, 1)) return false;
                    if (pBsi->extpgmlsscle)
                    {
                        if (!GetBits(pBsi->extpgmlsscl, 4)) return false;
                    }
                    if (!GetBits(pBsi->extpgmrsscle, 1)) return false;
                    if (pBsi->extpgmrsscle)
                    {
                        if (!GetBits(pBsi->extpgmrsscl, 4)) return false;
                    }
                    if (!GetBits(pBsi->extpgmlfescle, 1)) return false;
                    if (pBsi->extpgmlfescle)
                    {
                        if (!GetBits(pBsi->extpgmlfescl, 4)) return false;
                    }
                    if (!GetBits(pBsi->dmixscle, 1)) return false;
                    if (pBsi->dmixscle)
                    {
                        if (!GetBits(pBsi->dmixscl, 4)) return false;
                    }
                    if (!GetBits(pBsi->addche, 1)) return false;
                    if (pBsi->addche)
                    {
                        if (!GetBits(pBsi->extpgmaux1scle, 1)) return false;
                        if (pBsi->extpgmaux1scle)
                        {
                            if (!GetBits(pBsi->extpgmaux1scl, 4)) return false;
                        }
                        if (!GetBits(pBsi->extpgmaux2scle, 1)) return false;
                        if (pBsi->extpgmaux2scle)
                        {
                            if (!GetBits(pBsi->extpgmaux2scl, 4)) return false;
                        }
                    }
                }
                if (!GetBits(pBsi->mixdata3e, 1)) return false;
                if (pBsi->mixdata3e)
                {
                    if (!GetBits(pBsi->spchdat, 5)) return false;
                    if (!GetBits(pBsi->addspchdate, 1)) return false;
                    if (pBsi->addspchdate)
                    {
                        if (!GetBits(pBsi->spchdat1, 5)) return false;
                        if (!GetBits(pBsi->spchan1att, 2)) return false;
                        if (!GetBits(pBsi->addspchdat1e, 1)) return false;
                        if (pBsi->addspdat1e)
                        {
                            if (!GetBits(pBsi->spchdat2, 5)) return false;
                            if (!GetBits(pBsi->spchan2att, 3)) return false;
                        }
                    }
                }
                {
                    uint32_t data;
                    uint32_t size = 8 * (pBsi->mixdeflen + 2);
                    size = (size + 7) / 8 * 8;
                    uint32_t index = 0;
                    while (size > 0)
                    {
                        if (!GetBits(data, (size > 8)? 8 : size)) return false;
                        pBsi->mixdatabuffer[index++] = (uint8_t)data;
                        size = size - 8;
                    }
                }
            }
            if (pBsi->acmod < 0x2) /* if mono or dual mono source */
            {
                if (!GetBits(pBsi->paninfoe, 1)) return false;
                if (pBsi->paninfoe)
                {
                    if (!GetBits(pBsi->panmean, 8)) return false;
                    if (!GetBits(pBsi->paninfo, 6)) return false;
                }
                if (pBsi->acmod == 0x0) /* if 1+1 mode (dual mono - some items need a second value) */
                {
                    if (!GetBits(pBsi->paninfo2e, 1)) return false;
                    if (pBsi->paninfo2e)
                    {
                        if (!GetBits(pBsi->panmean2, 8)) return false;
                        if (!GetBits(pBsi->paninfo2, 6)) return false;
                    }
                }
            }
            if (!GetBits(pBsi->frmmixcfginfoe, 1)) return false;
            if (pBsi->frmmixcfginfoe) /* mixing configuration information */
            {
                if (pBsi->numblkscod == 0x0)
                {
                    if (!GetBits(pBsi->blkmixcfginfo[0], 5)) return false;
                }
                else
                {
                    uint32_t blk;
                    uint32_t numblk;
                    if (pBsi->numblkscod == 0x1)
                        numblk = 2;
                    else if (pBsi->numblkscod == 0x2)
                        numblk = 3;
                    else if (pBsi->numblkscod == 0x3)
                        numblk = 6;
                    else
                        return false;
                    for(blk = 0; blk < numblk; blk++)
                    {
                        if (!GetBits(pBsi->blkmixcfginfoe, 1)) return false;
                        if (pBsi->blkmixcfginfoe)
                        {
                            if (!GetBits(pBsi->blkmixcfginfo[blk], 5)) return false;
                        }
                    }
                }
            }
        }
    }
    if (!GetBits(pBsi->infomdate, 1)) return false;
    if (pBsi->infomdate) /* informational metadata */
    {
        if (!GetBits(pBsi->bsmod, 3)) return false;
        if (!GetBits(pBsi->copyrightb, 1)) return false;
        if (!GetBits(pBsi->origbs, 1)) return false;
        if (pBsi->acmod == 0x2) /* if in 2/0 mode */
        {
            if (!GetBits(pBsi->dsurmod, 2)) return false;
            if (!GetBits(pBsi->dheadphonmod, 2)) return false;
        }
        if (pBsi->acmod >= 0x6) /* if both surround channels exist */
        {
            if (!GetBits(pBsi->dsurexmod, 2)) return false;
        }
        if (!GetBits(pBsi->audprodie, 1)) return false;
        if (pBsi->audprodie)
        {
            if (!GetBits(pBsi->mixlevel, 5)) return false;
            if (!GetBits(pBsi->roomtyp, 2)) return false;
            if (!GetBits(pBsi->adconvtyp, 1)) return false;
        }
        if (pBsi->acmod == 0x0) /* if 1+1 mode (dual mono, so some items need a second value) */
        {
            if (!GetBits(pBsi->audprodi2e, 1)) return false;
            if (pBsi->audprodi2e)
            {
                if (!GetBits(pBsi->mixlevel2, 5)) return false;
                if (!GetBits(pBsi->roomtyp2, 2)) return false;
                if (!GetBits(pBsi->adconvtyp2, 1)) return false;
            }
        }
        if (pBsi->fscod < 0x3) /* if not half sample rate */
        {
            if (!GetBits(pBsi->sourcefscod, 1)) return false;
        }
    }
    if ((pBsi->strmtyp == 0x0) && (pBsi->numblkscod != 0x3))
    {
        if (!GetBits(pBsi->convsync, 1)) return false;
    }
    if (pBsi->strmtyp == 0x2) /* if bit stream converted from AC-3 */
    {
        if (pBsi->numblkscod == 0x3) /* 6 blocks per syncframe */
        {
            pBsi->blkid = 1;
        }
        else
        {
            if (!GetBits(pBsi->blkid, 1)) return false;
        }
        if (pBsi->blkid)
        {
            if (!GetBits(pBsi->frmsizecod, 6)) return false;
        }
    }
    if (!GetBits(pBsi->addbsie, 1)) return false;
    if (pBsi->addbsie)
    {
        if (!GetBits(pBsi->addbsil, 6)) return false;
        {
            uint32_t data;
            uint32_t size = 8 * (pBsi->addbsil + 1);
            uint32_t index = 0;
            while (size > 0)
            {
                if (!GetBits(data, 8)) return false;
                pBsi->addbsibuffer[index++] = (uint8_t)data;
                size = size - 8;
            }
        }
    }

    return true;
}

void NTV2DolbyPlayer::SetBitBuffer(uint8_t * pBuffer, uint32_t size)
{
    mBitBuffer = pBuffer;
    mBitSize = size;
    mBitIndex = 8;
}

bool NTV2DolbyPlayer::GetBits(uint32_t & data, uint32_t bits)
{
    uint32_t cb;
    static uint8_t bitMask[] = { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff };

    data = 0;
    while (bits > 0)
    {
        if (mBitSize == 0)
            return false;

        if (mBitIndex == 0)
        {
            mBitBuffer++;
            mBitSize--;
            mBitIndex = 8;
        }

        cb = bits;
        if (cb > mBitIndex)
            cb = mBitIndex;
        bits -= cb;
        mBitIndex -= cb;
        data |= ((*mBitBuffer >> mBitIndex) & bitMask[cb]) << bits;
    }

    return true;
}

#else   //  DOLBY_FULL_PARSER
// NOTE:  The code under this #else is out of date and not maintaiend
uint32_t NTV2DolbyPlayer::AddDolby (ULWord * pInAudioBuffer)
{
    NTV2FrameRate   frameRate   (NTV2_FRAMERATE_INVALID);
    NTV2AudioRate   audioRate   (NTV2_AUDIO_RATE_INVALID);
    ULWord          numChannels (0);
    ULWord          sampleOffset(0);

    mDevice.GetFrameRate (frameRate, mOutputChannel);
    mDevice.GetAudioRate (audioRate, mAudioSystem);
    mDevice.GetNumberAudioChannels (numChannels, mAudioSystem);
    const ULWord    numSamples      (::GetAudioSamplesPerFrame (frameRate, audioRate, mCurrentFrame));

    if ((mConfig.fDolbyFile == NULL) || (mDolbyBuffer == NULL))
        goto silence;

    //  Generate the samples for this frame
    while (sampleOffset < numSamples)
    {
        //  Time for a new IEC61937 burst
        if (mBurstIndex >= mBurstSamples)
            mBurstIndex = 0;

        //  Get a new Dolby Digital Plus sync frame
        if (mBurstIndex == 0)
        {
            //  Read the sync word (all big endian)
            uint32_t bytes = mConfig.fDolbyFile->Read((uint8_t*)(&mDolbyBuffer[0]), 2);
            if (bytes != 2)
            {
                //  Try to loop
                mConfig.fDolbyFile->Seek(0, eAJASeekSet);
                bytes = mConfig.fDolbyFile->Read((uint8_t*)(&mDolbyBuffer[0]), 2);
                if (bytes != 2)
                    goto silence;
            }

            //  Check sync word
            if ((mDolbyBuffer[0] != 0x7705) &&
                (mDolbyBuffer[0] != 0x770b))
                goto silence;

            //  Read more of the sync frame header
            bytes = mConfig.fDolbyFile->Read((uint8_t*)(&mDolbyBuffer[1]), 4);
            if (bytes != 4)
                goto silence;

            //  Get frame size - 16 bit words plus sync word
            uint32_t size = (uint32_t)mDolbyBuffer[1];
            size = (((size & 0x00ff) << 8) | ((size & 0xff00) >> 8)) + 1;

            //  Read the rest of the sync frame
            uint32_t len = (size - 3) * 2;
            bytes = mConfig.fDolbyFile->Read((uint8_t*)(&mDolbyBuffer[3]), len);
            if (bytes != len)
                goto silence;

            //  Good frame
            mBurstOffset = 0;
            mBurstSize = size;
        }

        //  Add the Dolby data to the audio stream
        if (mBurstOffset < mBurstSize)
        {
            uint32_t data0 = 0;
            uint32_t data1 = 0;
            if (mBurstIndex == 0)
            {
                //  Add IEC61937 burst preamble
                data0 = 0xf872;             //  Sync stuff
                data1 = 0x4e1f;
            }
            else if (mBurstIndex == 1)
            {
                //  Add more IEC61937 burst preamble
                data0 = 0x0015;             //  This is Dolby
                data1 = mBurstSize * 2;     //  Data size in bytes
            }
            else
            {
                //  Add sync frame data
                data0 = (uint32_t)(mDolbyBuffer[mBurstOffset]);
                data0 = ((data0 & 0x00ff) << 8) | ((data0 & 0xff00) >> 8);
                mBurstOffset++;
                data1 = (uint32_t)(mDolbyBuffer[mBurstOffset]);
                data1 = ((data1 & 0x00ff) << 8) | ((data1 & 0xff00) >> 8);
                mBurstOffset++;
            }

            //  Write data into 16 msbs of all audio channel pairs
            data0 <<= 16;
            data1 <<= 16;
            for (ULWord i = 0; i < numChannels; i += 2)
            {
                pInAudioBuffer[sampleOffset * numChannels + i] = data0;
                pInAudioBuffer[sampleOffset * numChannels + i + 1] = data1;
            }
        }
        else
        {
            //  Pad samples out to burst size
            for (ULWord i = 0; i < numChannels; i++)
            {
                pInAudioBuffer[sampleOffset * numChannels + i] = 0;
            }
        }

        sampleOffset++;
        mBurstIndex++;
    }

    return numSamples * numChannels * 4;

silence:
    //  Output silence when done with file
    memset(&pInAudioBuffer[sampleOffset * numChannels], 0, (numSamples - sampleOffset) * numChannels * 4);
    return numSamples * numChannels * 4;
}
#endif  //  else DOLBY_FULL_PARSER

AJALabelValuePairs DolbyPlayerConfig::Get (const bool inCompact) const
{
    AJALabelValuePairs result (PlayerConfig::Get(inCompact));
    AJASystemInfo::append (result,  "Dolby Playback File",  fDolbyFilePath.empty() ? "---" : fDolbyFilePath);
    AJASystemInfo::append (result,  "Audio Data Ramp",      fDoRamp ? "Yes" : "No");
    return result;
}

std::ostream & operator << (std::ostream & ioStrm,  const DolbyPlayerConfig & inObj)
{
    ioStrm  << AJASystemInfo::ToString(inObj.Get());
    return ioStrm;
}