ExternalChannel.cpp

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// MythTV includes
#include "mythlogging.h"
#include "mpegtables.h"
#include "ExternalChannel.h"
#include "tv_rec.h"
 
#define LOC  QString("ExternChan[%1](%2): ").arg(m_inputId).arg(m_loc)
 
ExternalChannel::~ExternalChannel(void)
{
    if (ExternalChannel::IsOpen())
        ExternalChannel::Close();
}
 
bool ExternalChannel::Open(void)
{
    LOG(VB_CHANNEL, LOG_INFO, LOC + "Open()");
 
    if (m_device.isEmpty())
        return false;
 
    if (IsOpen())
    {
        if (m_streamHandler->IsAppOpen())
            return true;
 
        LOG(VB_GENERAL, LOG_ERR, LOC +
            QString("Valid stream handler, but app is not open!  Resetting."));
        Close();
    }
 
 
    if (!InitializeInput())
        return false;
 
    if (!m_inputId)
        return false;
 
    m_streamHandler = ExternalStreamHandler::Get(m_device, GetInputID(),
                                                  GetMajorID());
    if (!m_streamHandler || m_streamHandler->HasError())
    {
        LOG(VB_GENERAL, LOG_ERR, LOC + "Open failed");
        return false;
    }
 
    GetDescription();
    LOG(VB_RECORD, LOG_INFO, LOC + "Opened");
    return true;
}
 
void ExternalChannel::Close()
{
    LOG(VB_CHANNEL, LOG_INFO, LOC + "Close()");
 
    if (ExternalChannel::IsOpen())
    {
        ExternalStreamHandler::Return(m_streamHandler, GetInputID());
        m_streamHandler = nullptr;
    }
}
 
QString ExternalChannel::UpdateDescription(void)
{
    if (m_streamHandler)
        m_loc = m_streamHandler->UpdateDescription();
    else
        m_loc = GetDevice();
 
    return m_loc;
}
 
QString ExternalChannel::GetDescription(void)
{
    if (m_streamHandler)
        m_loc = m_streamHandler->GetDescription();
    else
        m_loc = GetDevice();
 
    return m_loc;
}
 
bool ExternalChannel::Tune(const QString &channum)
{
    LOG(VB_CHANNEL, LOG_INFO, LOC + QString("Tune(%1)").arg(channum));
 
    if (!IsOpen())
    {
        LOG(VB_CHANNEL, LOG_ERR, LOC + "Tune failed, not open");
        return false;
    }
 
    if (!m_streamHandler->HasTuner())
        return true;
 
    QString result;
    if (m_tuneTimeout < 0)
    {
        // When mythbackend first starts up, just retrive the
        // tuneTimeout for subsequent tune requests.
 
        if (!m_streamHandler->ProcessCommand("LockTimeout?", result))
        {
            LOG(VB_CHANNEL, LOG_ERR, LOC + QString
                ("Failed to retrieve LockTimeout: %1").arg(result));
            m_tuneTimeout = 60000;
        }
        else
            m_tuneTimeout = result.split(":")[1].toInt();
 
        LOG(VB_CHANNEL, LOG_INFO, LOC + QString("Using Tune timeout of %1ms")
            .arg(m_tuneTimeout));
    }
    else
    {
        LOG(VB_CHANNEL, LOG_INFO, LOC + "Tuning to " + channum);
 
        if (!m_streamHandler->ProcessCommand("TuneChannel:" + channum,
                                             result, m_tuneTimeout))
        {
            LOG(VB_CHANNEL, LOG_ERR, LOC + QString
                ("Failed to Tune %1: %2").arg(channum).arg(result));
            return false;
        }
 
        UpdateDescription();
        m_backgroundTuning = result.startsWith("OK:InProgress");
    }
 
    return true;
}
 
bool ExternalChannel::Tune(const QString &freqid, int /*finetune*/)
{
    return ExternalChannel::Tune(freqid);
}
 
bool ExternalChannel::EnterPowerSavingMode(void)
{
    Close();
    return true;
}
 
uint ExternalChannel::GetTuneStatus(void)
{
 
    if (!m_backgroundTuning)
        return 3;
 
    LOG(VB_CHANNEL, LOG_DEBUG, LOC + QString("GetScriptStatus() %1")
        .arg(m_systemStatus));
 
    QString result;
    int     ret = 0;
 
    if (!m_streamHandler->ProcessCommand("TuneStatus?", result))
    {
        LOG(VB_CHANNEL, LOG_ERR, LOC + QString
            ("Failed to Tune: %1").arg(result));
        ret = 2;
        m_backgroundTuning = false;
    }
    else
    {
        if (result.startsWith("OK:InProgress"))
            ret = 1;
        else
        {
            ret = 3;
            m_backgroundTuning = false;
            UpdateDescription();
        }
    }
 
    LOG(VB_CHANNEL, LOG_DEBUG, LOC + QString("GetScriptStatus() %1 -> %2")
        .arg(m_systemStatus). arg(ret));
 
    return ret;
}