cetonchannel.cpp

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// MythTV includes
#include "libmythbase/mythdbcon.h"
#include "libmythbase/mythlogging.h"
 
#include "cetonchannel.h"
#include "cetonstreamhandler.h"
#include "channelutil.h"
#include "videosource.h"
 
#define LOC QString("CetonChan[%1](%2): ").arg(m_inputId).arg(CetonChannel::GetDevice())
 
CetonChannel::~CetonChannel(void)
{
    CetonChannel::Close();
}
 
bool CetonChannel::Open(void)
{
    LOG(VB_CHANNEL, LOG_INFO, LOC + "Opening Ceton channel");
 
    if (IsOpen())
        return true;
 
    m_streamHandler = CetonStreamHandler::Get(m_deviceId, GetInputID());
 
    m_tunerType = DTVTunerType::kTunerTypeATSC;
    m_tunerTypes.push_back(m_tunerType);
 
    if (!InitializeInput())
    {
        Close();
        return false;
    }
 
    return m_streamHandler->IsConnected();
}
 
void CetonChannel::Close(void)
{
    LOG(VB_CHANNEL, LOG_INFO, LOC + "Closing Ceton channel");
 
    if (!CetonChannel::IsOpen())
        return; // this caller didn't have it open in the first place..
 
    CetonStreamHandler::Return(m_streamHandler, GetInputID());
}
 
bool CetonChannel::EnterPowerSavingMode(void)
{
    if (IsOpen())
        return m_streamHandler->EnterPowerSavingMode();
    return true;
}
 
bool CetonChannel::IsOpen(void) const
{
      return m_streamHandler;
}
 
bool CetonChannel::Tune(const QString &freqid, int /*finetune*/)
{
    return m_streamHandler->TuneVChannel(freqid);
}
 
static QString format_modulation(const DTVMultiplex &tuning)
{
    if (DTVModulation::kModulationQAM256 == tuning.m_modulation)
        return "qam_256";
    if (DTVModulation::kModulationQAM64 == tuning.m_modulation)
        return "qam_64";
    //note...ceton also supports NTSC-M, but not sure what to use that for
    if (DTVModulation::kModulation8VSB == tuning.m_modulation)
        return "8vsb";
 
    return "unknown";
}
 
bool CetonChannel::Tune(const DTVMultiplex &tuning)
{
    QString modulation = format_modulation(tuning);
 
    LOG(VB_CHANNEL, LOG_INFO, LOC + QString("Tuning to %1 %2")
        .arg(tuning.m_frequency).arg(modulation));
 
    if (m_streamHandler->TuneFrequency(tuning.m_frequency, modulation))
    {
        SetSIStandard(tuning.m_sistandard);
        return true;
    }
 
    return false;
}
 
bool CetonChannel::SetChannelByString(const QString &channum)
{
    bool ok = DTVChannel::SetChannelByString(channum);
 
    if (ok)
    {
        if (m_streamHandler->IsCableCardInstalled())
            m_currentProgramNum = m_streamHandler->GetProgramNumber();
        else
            m_streamHandler->TuneProgram(m_currentProgramNum);
    }
    return ok;
}