mpegutils.cpp

Go to the documentation of this file.

// -*- Mode: c++ -*-
// MythTV headers
#include "libmythbase/exitcodes.h"
#include "libmythbase/mythlogging.h"
#include "libmythtv/io/mythmediabuffer.h"
#include "libmythtv/mpeg/atsctables.h"
#include "libmythtv/mpeg/dvbtables.h"
#include "libmythtv/mpeg/premieretables.h"
#include "libmythtv/mpeg/scanstreamdata.h"
#include "libmythtv/mpeg/sctetables.h"
#include "libmythtv/mpeg/streamlisteners.h"
#include "libmythtv/bytereader.h"
 
 
// Application local headers
#include "mpegutils.h"
 
static QHash<uint,bool> extract_pids(const QString &pidsStr, bool required)
{
    QHash<uint,bool> use_pid;
    if (pidsStr.isEmpty())
    {
        if (required)
            LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Missing --pids option\n");
    }
    else
    {
        QStringList pidsList = pidsStr.split(",");
        for (const QString &pidStr : qAsConst(pidsList))
        {
            bool ok = false;
            uint tmp = pidStr.toUInt(&ok, 0);
            if (ok && (tmp < 0x2000))
                use_pid[tmp] = true;
        }
        if (required && use_pid.empty())
        {
            LOG(VB_STDIO|VB_FLUSH, LOG_ERR,
                "At least one pid must be specified\n");
        }
    }
    return use_pid;
}
 
static int resync_stream(
    const char *buffer, int curr_pos, int len, int packet_size)
{
    // Search for two sync bytes 188 bytes apart,
    int pos = curr_pos;
    int nextpos = pos + packet_size;
    if (nextpos >= len)
        return -1; // not enough bytes; caller should try again
 
    while (buffer[pos] != SYNC_BYTE || buffer[nextpos] != SYNC_BYTE)
    {
        pos++;
        nextpos++;
        if (nextpos == len)
            return -2; // not found
    }
 
    return pos;
}
 
static int pid_counter(const MythUtilCommandLineParser &cmdline)
{
    if (cmdline.toString("infile").isEmpty())
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Missing --infile option\n");
        return GENERIC_EXIT_INVALID_CMDLINE;
    }
    QString src = cmdline.toString("infile");
 
    MythMediaBuffer *srcbuffer = MythMediaBuffer::Create(src, false);
    if (!srcbuffer)
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Couldn't open input URL\n");
        return GENERIC_EXIT_NOT_OK;
    }
 
    uint packet_size = cmdline.toUInt("packetsize");
    if (packet_size == 0)
    {
        packet_size = 188;
    }
    else if (packet_size != 188 &&
             packet_size != (188+16) &&
             packet_size != (188+20))
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR,
            QString("Invalid packet size %1, must be 188, 204, or 208\n")
            .arg(packet_size));
        return GENERIC_EXIT_INVALID_CMDLINE;
    }
 
    const int kBufSize = 2 * 1024 * 1024;
    std::array<uint64_t,0x2000> pid_count {};
    char *buffer = new char[kBufSize];
    int offset = 0;
    long long total_count = 0;
 
    while (true)
    {
        int r = srcbuffer->Read(&buffer[offset], kBufSize - offset);
        if (r <= 0)
            break;
        int pos = 0;
        int len = offset + r;
        while (pos + 187 < len) // while we have a whole packet left
        {
            if (buffer[pos] != SYNC_BYTE)
            {
                pos = resync_stream(buffer, pos+1, len, packet_size);
                if (pos < 0)
                {
                    break;
                }
            }
            int pid = ((buffer[pos+1]<<8) | buffer[pos+2]) & 0x1fff;
            pid_count[pid]++;
            pos += packet_size;
            total_count++;
        }
 
        if (len - pos > 0)
        {
            memcpy(buffer, buffer + pos, len - pos);
            offset = len - pos;
        }
        else
        {
            offset = 0;
        }
        LOG(VB_STDIO|VB_FLUSH, logLevel,
            QString("\r                                            \r"
                    "Processed %1 packets")
            .arg(total_count));
    }
    LOG(VB_STDIO|VB_FLUSH, logLevel, "\n");
 
    delete[] buffer;
    delete srcbuffer;
 
    for (uint i = 0; i < 0x2000; i++)
    {
        if (pid_count[i])
        {
            LOG(VB_STDIO|VB_FLUSH, LOG_CRIT,
                QString("PID 0x%1 -- %2\n")
                .arg(i,4,16,QChar('0'))
                .arg(pid_count[i],11));
        }
    }
 
    return GENERIC_EXIT_OK;
}
 
static int pid_filter(const MythUtilCommandLineParser &cmdline)
{
    if (cmdline.toString("infile").isEmpty())
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Missing --infile option\n");
        return GENERIC_EXIT_INVALID_CMDLINE;
    }
    QString src = cmdline.toString("infile");
 
    if (cmdline.toString("outfile").isEmpty())
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Missing --outfile option\n");
        return GENERIC_EXIT_INVALID_CMDLINE;
    }
    QString dest = cmdline.toString("outfile");
 
    uint packet_size = cmdline.toUInt("packetsize");
    if (packet_size == 0)
    {
        packet_size = 188;
    }
    else if (packet_size != 188 &&
             packet_size != (188+16) &&
             packet_size != (188+20))
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR,
            QString("Invalid packet size %1, must be 188, 204, or 208\n")
            .arg(packet_size));
        return GENERIC_EXIT_INVALID_CMDLINE;
    }
 
    QHash<uint,bool> use_pid = extract_pids(cmdline.toString("pids"), true);
    if (use_pid.empty())
        return GENERIC_EXIT_INVALID_CMDLINE;
 
    MythMediaBuffer *srcbuffer = MythMediaBuffer::Create(src, false);
    if (!srcbuffer)
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Couldn't open input URL\n");
        return GENERIC_EXIT_NOT_OK;
    }
 
    MythMediaBuffer *destRB = MythMediaBuffer::Create(dest, true);
    if (!destRB)
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Couldn't open output URL\n");
        delete srcbuffer;
        return GENERIC_EXIT_NOT_OK;
    }
 
    const int kBufSize = 2 * 1024 * 1024;
    char *buffer = new char[kBufSize];
    int offset = 0;
    long long total_count = 0;
    long long write_count = 0;
 
    while (true)
    {
        int r = srcbuffer->Read(&buffer[offset], kBufSize - offset);
        if (r <= 0)
            break;
        int pos = 0;
        int len = offset + r;
        while (pos + 187 < len) // while we have a whole packet left
        {
            if (buffer[pos] != SYNC_BYTE)
            {
                pos = resync_stream(buffer, pos+1, len, packet_size);
                if (pos < 0)
                {
                    break;
                }
            }
            int pid = ((buffer[pos+1]<<8) | buffer[pos+2]) & 0x1fff;
            if (use_pid[pid])
            {
                destRB->Write(buffer+pos, packet_size);
                write_count++;
            }
            pos += packet_size;
            total_count++;
        }
 
        if (len - pos > 0)
        {
            memcpy(buffer, buffer + pos, len - pos);
            offset = len - pos;
        }
        else
        {
            offset = 0;
        }
        LOG(VB_STDIO|VB_FLUSH, logLevel,
            QString("\r                                            \r"
                    "Processed %1 packets")
            .arg(total_count));
    }
    LOG(VB_STDIO|VB_FLUSH, logLevel, "\n");
 
    delete[] buffer;
    delete srcbuffer;
    delete destRB;
 
    LOG(VB_STDIO|VB_FLUSH, logLevel, QString("Wrote %1 of %2 packets\n")
        .arg(write_count).arg(total_count));
 
    return GENERIC_EXIT_OK;
}
 
class PTSListener :
    public TSPacketListener,
    public TSPacketListenerAV
{
  public:
    PTSListener()
    {
        m_ptsCount.fill(0);
        m_ptsFirst.fill(-1LL);
        m_ptsLast.fill(-1LL);
 
    }
    bool ProcessTSPacket(const TSPacket &tspacket) override; // TSPacketListener
    bool ProcessVideoTSPacket(const TSPacket &tspacket) override // TSPacketListenerAV
    { return ProcessTSPacket(tspacket); }
    bool ProcessAudioTSPacket(const TSPacket &tspacket) override // TSPacketListenerAV
    { return ProcessTSPacket(tspacket); }
    int64_t GetFirstPTS(void) const
    {
        int64_t pts = -1LL;
        uint32_t pts_count = 0;
        for (uint stream : qAsConst(m_ptsStreams))
        {
            if(m_ptsCount[stream] > pts_count){
                pts = m_ptsFirst[stream];
                pts_count = m_ptsCount[stream];
            }
        }
        return pts;
    }
    int64_t GetLastPTS(void) const
    {
        int64_t pts = -1LL;
        uint32_t pts_count = 0;
        for (uint stream : qAsConst(m_ptsStreams))
        {
            if(m_ptsCount[stream] > pts_count){
                pts = m_ptsLast[stream];
                pts_count = m_ptsCount[stream];
            }
        }
        return pts;
    }
    int64_t GetElapsedPTS(void) const
    {
        int64_t elapsed = GetLastPTS() - GetFirstPTS();
        return (elapsed < 0) ? elapsed + 0x1000000000LL : elapsed;
    }
 
  public:
    uint32_t        m_startCode     {0xFFFFFFFF};
    QMap<uint,uint> m_ptsStreams;
    std::array<uint32_t,256> m_ptsCount {};
    std::array<int64_t,256>  m_ptsFirst {};
    std::array<int64_t,256>  m_ptsLast  {};
};
 
 
bool PTSListener::ProcessTSPacket(const TSPacket &tspacket)
{
    // if packet contains start of PES packet, start
    // looking for first byte of MPEG start code (3 bytes 0 0 1)
    // otherwise, pick up search where we left off.
    const bool payloadStart = tspacket.PayloadStart();
    m_startCode = (payloadStart) ? 0xffffffff : m_startCode;
 
    // Scan for PES header codes; specifically picture_start
    // sequence_start (SEQ) and group_start (GOP).
    //   00 00 01 C0-DF: audio stream
    //   00 00 01 E0-EF: video stream
    //   (there are others that we don't care about)
    const uint8_t *bufptr = tspacket.data() + tspacket.AFCOffset();
    const uint8_t *bufend = tspacket.data() + TSPacket::kSize;
 
    while (bufptr < bufend)
    {
        bufptr = ByteReader::find_start_code_truncated(bufptr, bufend, &m_startCode);
        int bytes_left = bufend - bufptr;
        if (ByteReader::start_code_is_valid(m_startCode))
        {
            // At this point we have seen the start code 0 0 1
            // the next byte will be the PES packet stream id.
            const int stream_id = m_startCode & 0x000000ff;
            if ((stream_id < 0xc0) || (stream_id > 0xef) ||
                (bytes_left < 10))
            {
                continue;
            }
            bool has_pts = (bufptr[3] & 0x80) != 0;
            if (has_pts && (bytes_left > 5+5))
            {
                int i = 5;
                int64_t pts =
                    (uint64_t(bufptr[i+0] & 0x0e) << 29) |
                    (uint64_t(bufptr[i+1]       ) << 22) |
                    (uint64_t(bufptr[i+2] & 0xfe) << 14) |
                    (uint64_t(bufptr[i+3]       ) <<  7) |
                    (uint64_t(bufptr[i+4] & 0xfe) >> 1);
                m_ptsStreams[stream_id] = stream_id;
                m_ptsLast[stream_id] = pts;
                if (m_ptsCount[stream_id] < 30)
                {
                    if ((!m_ptsCount[stream_id]) ||
                        (pts < m_ptsFirst[stream_id]))
                        m_ptsFirst[stream_id] = pts;
                }
                m_ptsCount[stream_id]++;
            }
        }
    }
 
    return true;
}
 
class PrintOutput
{
  public:
    PrintOutput(MythMediaBuffer *out, bool use_xml) :
        m_out(out), m_useXml(use_xml)
    {
    }
 
    void Output(const QString &msg) const
    {
        if (m_out)
        {
            QByteArray ba = msg.toUtf8();
            m_out->Write(ba.constData(), ba.size());
        }
        else
        {
            LOG(VB_STDIO|VB_FLUSH, logLevel, msg);
        }
    }
 
    void Output(const PSIPTable *psip) const
    {
        if (!psip)
            return;
        Output(((m_useXml) ? psip->toStringXML(0) : psip->toString()) + "\n");
    }
 
  protected:
    MythMediaBuffer *m_out;
    bool m_useXml;
};
 
class PrintMPEGStreamListener : public MPEGStreamListener, public PrintOutput
{
  public:
    PrintMPEGStreamListener(
        MythMediaBuffer *out, PTSListener &ptsl, bool autopts,
        MPEGStreamData *sd, const QHash<uint,bool> &use_pid, bool use_xml) :
        PrintOutput(out, use_xml), m_ptsl(ptsl),
        m_autopts(autopts), m_sd(sd), m_usePid(use_pid)
    {
        if (m_autopts)
            m_sd->AddListeningPID(PID::MPEG_PAT_PID);
    }
 
    void HandlePAT(const ProgramAssociationTable *pat) override // MPEGStreamListener
    {
        if (pat && (!m_autopts || m_usePid[PID::MPEG_PAT_PID]))
            Output(pat);
        if (pat && m_autopts)
        {
            for (uint i = 0; i < pat->ProgramCount(); i++)
                m_sd->AddListeningPID(pat->ProgramPID(i));
        }
    }
 
    void HandleCAT(const ConditionalAccessTable *cat) override // MPEGStreamListener
    {
        if (cat)
            Output(cat);
    }
 
    void HandlePMT(uint /*program_num*/, const ProgramMapTable *pmt) override // MPEGStreamListener
    {
        if (pmt && (!m_autopts || m_usePid[pmt->tsheader()->PID()]))
            Output(pmt);
        if (pmt && m_autopts)
        {
            uint video_pid = 0;
            uint audio_pid = 0;
            for (uint i = 0; i < pmt->StreamCount(); i++)
            {
                if (pmt->IsVideo(i, "mpeg"))
                    video_pid = pmt->StreamPID(i);
                else if (pmt->IsAudio(i, "mpeg"))
                    audio_pid = pmt->StreamPID(i);
            }
            if (video_pid)
                m_sd->AddWritingPID(video_pid);
            else if (audio_pid)
                m_sd->AddWritingPID(audio_pid);
            else
            {
                LOG(VB_STDIO|VB_FLUSH, LOG_WARNING,
                    "Couldn't find PTS stream\n");
            }
        }
    }
 
    void HandleEncryptionStatus(uint /*program_number*/, bool /*encrypted*/) override // MPEGStreamListener
    {
    }
 
    void HandleSplice(const SpliceInformationTable *sit) override // MPEGStreamListener
    {
        if (sit && m_useXml)
        {
            Output(sit->toStringXML(
                       0, m_ptsl.GetFirstPTS(), m_ptsl.GetLastPTS()) + "\n");
        }
        else if (sit)
        {
            QTime ot = QTime(0,0,0,0).addMSecs(m_ptsl.GetElapsedPTS()/90);
            Output(
                ot.toString("hh:mm:ss.zzz") + " " +
                sit->toString(m_ptsl.GetFirstPTS(),
                              m_ptsl.GetLastPTS()) + "\n");
        }
    }
 
  private:
    const PTSListener &m_ptsl;
    bool m_autopts;
    MPEGStreamData *m_sd;
    const QHash<uint,bool> &m_usePid;
};
 
class PrintATSCMainStreamListener :
    public ATSCMainStreamListener, public PrintOutput
{
  public:
    PrintATSCMainStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleSTT(const SystemTimeTable *stt) override // ATSCMainStreamListener
    {
        Output(stt);
    }
 
    void HandleMGT(const MasterGuideTable *mgt) override // ATSCMainStreamListener
    {
        Output(mgt);
    }
 
    void HandleVCT(uint /*pid*/, const VirtualChannelTable *vct) override // ATSCMainStreamListener
    {
        Output(vct);
    }
};
 
class PrintSCTEMainStreamListener :
    public SCTEMainStreamListener, public PrintOutput
{
  public:
    PrintSCTEMainStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleNIT(const SCTENetworkInformationTable *nit) override // SCTEMainStreamListener
    {
        Output(nit);
    }
 
    void HandleSTT(const SCTESystemTimeTable *stt) override // SCTEMainStreamListener
    {
        Output(stt);
    }
 
    void HandleNTT(const NetworkTextTable *ntt) override // SCTEMainStreamListener
    {
        Output(ntt);
    }
 
    void HandleSVCT(const ShortVirtualChannelTable *svct) override // SCTEMainStreamListener
    {
        Output(svct);
    }
 
    void HandlePIM(const ProgramInformationMessageTable *pim) override // SCTEMainStreamListener
    {
        Output(pim);
    }
 
    void HandlePNM(const ProgramNameMessageTable *pnm) override  // SCTEMainStreamListener
    {
        Output(pnm);
    }
 
    void HandleADET(const AggregateDataEventTable *adet) override // SCTEMainStreamListener
    {
        Output(adet);
    }
};
 
class PrintATSCAuxStreamListener :
    public ATSCAuxStreamListener, public PrintOutput
{
  public:
    PrintATSCAuxStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleTVCT( uint /*pid*/,
                     const TerrestrialVirtualChannelTable */*tvct*/) override // ATSCAuxStreamListener
    {
        // already handled in HandleVCT
    }
 
    void HandleCVCT(uint /*pid*/,
                    const CableVirtualChannelTable */*cvct*/) override // ATSCAuxStreamListener
    {
        // already handled in HandleVCT
    }
 
    void HandleRRT(const RatingRegionTable *rrt) override // ATSCAuxStreamListener
    {
        Output(rrt);
    }
 
    void HandleDCCT(const DirectedChannelChangeTable *dcct) override // ATSCAuxStreamListener
    {
        Output(dcct);
    }
 
    void HandleDCCSCT(
        const DirectedChannelChangeSelectionCodeTable *dccsct) override // ATSCAuxStreamListener
    {
        Output(dccsct);
    }
};
 
class PrintATSCEITStreamListener :
    public ATSCEITStreamListener, public PrintOutput
{
  public:
    PrintATSCEITStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleEIT(uint pid, const EventInformationTable *eit) override // ATSCEITStreamListener
    {
        if (eit)
            Output(QString("EIT PID 0x%1\n").arg(pid,0,16) + eit->toString());
    }
 
    void HandleETT(uint pid, const ExtendedTextTable *ett) override // ATSCEITStreamListener
    {
        if (ett)
            Output(QString("ETT PID 0x%1\n").arg(pid,0,16) + ett->toString());
    }
};
 
class PrintDVBMainStreamListener :
    public DVBMainStreamListener, public PrintOutput
{
  public:
    PrintDVBMainStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleTDT(const TimeDateTable *tdt) override // DVBMainStreamListener
    {
        Output(tdt);
    }
 
    void HandleNIT(const NetworkInformationTable *nit) override // DVBMainStreamListener
    {
        Output(nit);
    }
 
    void HandleSDT(uint /*tsid*/, const ServiceDescriptionTable *sdt) override // DVBMainStreamListener
    {
        Output(sdt);
    }
 
};
 
class PrintDVBOtherStreamListener :
    public DVBOtherStreamListener, public PrintOutput
{
  public:
    PrintDVBOtherStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleNITo(const NetworkInformationTable *nit) override // DVBOtherStreamListener
    {
        Output(nit);
    }
 
    void HandleSDTo(uint /*tsid*/, const ServiceDescriptionTable *sdt) override // DVBOtherStreamListener
    {
        Output(sdt);
    }
 
    void HandleBAT(const BouquetAssociationTable *bat) override // DVBOtherStreamListener
    {
        Output(bat);
    }
 
};
 
class PrintDVBEITStreamListener :
    public DVBEITStreamListener, public PrintOutput
{
  public:
    PrintDVBEITStreamListener(MythMediaBuffer *out, bool use_xml) :
        PrintOutput(out, use_xml) { }
 
    void HandleEIT(const DVBEventInformationTable *eit) override // DVBEITStreamListener
    {
        Output(eit);
    }
 
    void HandleEIT(const PremiereContentInformationTable *pcit) override // DVBEITStreamListener
    {
        Output(pcit);
    }
};
 
static int pid_printer(const MythUtilCommandLineParser &cmdline)
{
    if (cmdline.toString("infile").isEmpty())
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Missing --infile option\n");
        return GENERIC_EXIT_INVALID_CMDLINE;
    }
    QString src = cmdline.toString("infile");
 
    MythMediaBuffer *srcRB = MythMediaBuffer::Create(src, false);
    if (!srcRB)
    {
        LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Couldn't open input URL\n");
        return GENERIC_EXIT_NOT_OK;
    }
 
    QHash<uint,bool> use_pid = extract_pids(cmdline.toString("pids"), true);
    if (use_pid.empty())
        return GENERIC_EXIT_INVALID_CMDLINE;
 
    QHash<uint,bool> use_pid_for_pts =
        extract_pids(cmdline.toString("ptspids"), false);
 
    QString dest = cmdline.toString("outfile");
    MythMediaBuffer *out = nullptr;
    if (!dest.isEmpty())
    {
        out = MythMediaBuffer::Create(dest, true);
        if (!out)
        {
            LOG(VB_STDIO|VB_FLUSH, LOG_ERR, "Couldn't open output URL\n");
            delete srcRB;
            return GENERIC_EXIT_NOT_OK;
        }
        out->WriterSetBlocking(true);
    }
    bool autopts = !cmdline.toBool("noautopts");
    bool use_xml = cmdline.toBool("xml");
 
    auto *sd = new ScanStreamData(true);
    for (QHash<uint,bool>::iterator it = use_pid.begin();
         it != use_pid.end(); ++it)
    {
        sd->AddListeningPID(it.key());
    }
 
    for (QHash<uint,bool>::iterator it = use_pid_for_pts.begin();
         it != use_pid_for_pts.end(); ++it)
    {
        sd->AddWritingPID(it.key());
    }
 
    auto *ptsl  = new PTSListener();
    auto *pmsl  = new PrintMPEGStreamListener(out, *ptsl, autopts, sd,
                                              use_pid, use_xml);
    auto *pasl  = new PrintATSCMainStreamListener(out, use_xml);
    auto *pssl  = new PrintSCTEMainStreamListener(out, use_xml);
    auto *paasl = new PrintATSCAuxStreamListener(out, use_xml);
    auto *paesl = new PrintATSCEITStreamListener(out, use_xml);
    auto *pdmsl = new PrintDVBMainStreamListener(out, use_xml);
    auto *pdosl = new PrintDVBOtherStreamListener(out, use_xml);
    auto *pdesl = new PrintDVBEITStreamListener(out, use_xml);
 
    sd->AddWritingListener(ptsl);
    sd->AddMPEGListener(pmsl);
    sd->AddATSCMainListener(pasl);
    sd->AddSCTEMainListener(pssl);
    sd->AddATSCAuxListener(paasl);
    sd->AddATSCEITListener(paesl);
    sd->AddDVBMainListener(pdmsl);
    sd->AddDVBOtherListener(pdosl);
    sd->AddDVBEITListener(pdesl);
 
    const int kBufSize = 2 * 1024 * 1024;
    char *buffer = new char[kBufSize];
    int offset = 0;
    uint64_t totalBytes = 0ULL;
 
    if (use_xml) {
        /* using a random instance of a sub class of PrintOutput */
        pmsl->Output(QString(R"(<?xml version="1.0" encoding="UTF-8" ?>)"));
        pmsl->Output(QString("<MPEGSections>"));
    }
 
    while (true)
    {
        int r = srcRB->Read(&buffer[offset], kBufSize - offset);
        if (r <= 0)
            break;
 
        int len = offset + r;
 
        offset = sd->ProcessData((const unsigned char*)buffer, len);
 
        totalBytes += len - offset;
        LOG(VB_STDIO|VB_FLUSH, logLevel,
            QString("\r                                            \r"
                    "Processed %1 bytes")
            .arg(totalBytes));
    }
 
    if (use_xml) {
        /* using a random instance of a sub class of PrintOutput */
        pmsl->Output(QString("</MPEGSections>"));
    }
 
    LOG(VB_STDIO|VB_FLUSH, logLevel, "\n");
 
    if (ptsl->GetFirstPTS() >= 0)
    {
        QTime ot = QTime(0,0,0,0).addMSecs(ptsl->GetElapsedPTS()/90);
 
        LOG(VB_STDIO|VB_FLUSH, logLevel,
            QString("First PTS %1, Last PTS %2, elapsed %3 %4\n")
            .arg(ptsl->GetFirstPTS()).arg(ptsl->GetLastPTS())
            .arg(ptsl->GetElapsedPTS())
            .arg(ot.toString("hh:mm:ss.zzz")));
    }
 
    delete sd;
    delete pmsl;
    delete pasl;
    delete pssl;
    delete paasl;
    delete paesl;
    delete pdmsl;
    delete pdosl;
    delete pdesl;
    delete ptsl;
 
    delete srcRB;
    delete out;
 
    return GENERIC_EXIT_OK;
}
 
void registerMPEGUtils(UtilMap &utilMap)
{
    utilMap["pidcounter"] = &pid_counter;
    utilMap["pidfilter"]  = &pid_filter;
    utilMap["pidprinter"] = &pid_printer;
}