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ATV Demod: horizontal sync code refactoring (1)

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This commit is contained in:
f4exb 2017-03-29 17:17:11 +02:00
parent e4d62eff4f
commit fd70dc30eb
1 changed files with 89 additions and 36 deletions
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125
plugins/channelrx/demodatv/atvdemod.cpp
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@ -436,7 +436,7 @@ void ATVDemod::demod(Complex& c)
//********** Filling pixels ********** //********** Filling pixels **********
bool blnComputeImage = (m_objRunning.m_fltRatioOfRowsToDisplay != 0.5f); bool blnComputeImage = (m_objRunning.m_fltRatioOfRowsToDisplay != 0.5f); // TODO: review this
if (!blnComputeImage) if (!blnComputeImage)
{ {
@ -445,33 +445,48 @@ void ATVDemod::demod(Complex& c)
if (blnComputeImage) if (blnComputeImage)
{ {
m_objRegisteredATVScreen->setDataColor(m_intColIndex - m_intNumberSaplesPerHSync + m_intNumberSamplePerTop, intVal, intVal, intVal); // TODO: the subtraction should be made with back porch number of samples m_objRegisteredATVScreen->setDataColor(m_intColIndex - m_intNumberSaplesPerHSync + m_intNumberSamplePerTop, intVal, intVal, intVal);
} }
m_intColIndex++; m_intColIndex++;
////////////////////// //////////////////////
m_blnSynchroDetected=false; // m_blnSynchroDetected=false;
//
// if (m_intColIndex >= intSynchroTimeSamples)
// {
// //Floor Detection 0
// if (fltVal < m_objRunning.m_fltVoltLevelSynchroTop)
// {
// m_intSynchroPoints++;
// }
// else if (fltVal > m_objRunning.m_fltVoltLevelSynchroBlack)
// {
// m_intSynchroPoints = 0;
// }
//
// if (m_intSynchroPoints > m_intNumberSamplePerTop)
// {
// m_blnSynchroDetected = true;
// m_intSynchroPoints = 0;
// }
// }
if (m_intColIndex >= intSynchroTimeSamples) // Horizontal Synchro detection
// Floor Detection 0
if (fltVal < m_objRunning.m_fltVoltLevelSynchroTop)
{ {
//Floor Detection 0 m_intSynchroPoints++;
if (fltVal < m_objRunning.m_fltVoltLevelSynchroTop)
{
m_intSynchroPoints++;
}
else if (fltVal > m_objRunning.m_fltVoltLevelSynchroBlack)
{
m_intSynchroPoints = 0;
}
if (m_intSynchroPoints > m_intNumberSamplePerTop)
{
m_blnSynchroDetected = true;
m_intSynchroPoints = 0;
}
} }
// Black detection 0.3
else if (fltVal > m_objRunning.m_fltVoltLevelSynchroBlack)
{
m_intSynchroPoints = 0;
}
m_blnSynchroDetected = (m_intSynchroPoints == m_intNumberSamplePerTop);
//********** Rendering if necessary ********** //********** Rendering if necessary **********
@ -494,24 +509,32 @@ void ATVDemod::demod(Complex& c)
} }
} }
//Horizontal Synchro //Horizontal Synchro processing
if ((m_blnSynchroDetected)
|| (m_intColIndex >= m_intNumberSamplePerLine + m_intNumberSamplePerTop)
|| (!m_objRunning.m_blnHSync && (m_intColIndex >= m_intNumberSamplePerLine)))
{
if (m_blnSynchroDetected
&& (m_intRowIndex > m_intNumberOfSyncLines)
&& (m_intColIndex > m_intNumberSamplePerLine - m_intNumberSamplePerTop)
&& (m_intColIndex < m_intNumberSamplePerLine + m_intNumberSamplePerTop))
{
m_intAvgColIndex = m_objAvgColIndex.run(m_intColIndex);
m_intColIndex = m_intColIndex - m_intAvgColIndex;
}
else
{
m_intColIndex = 0;
}
bool blnNewLine = false;
if (!m_objRunning.m_blnHSync && (m_intColIndex >= m_intNumberSamplePerLine)) // H Sync not active
{
m_intColIndex = 0;
blnNewLine = true;
}
else if (m_blnSynchroDetected // Valid H sync detected
//&& (m_intRowIndex > m_intNumberOfSyncLines) // FIXME: remove ?
&& (m_intColIndex > m_intNumberSamplePerLine - m_intNumberSamplePerTop)
&& (m_intColIndex < m_intNumberSamplePerLine + m_intNumberSamplePerTop))
{
m_intAvgColIndex = m_objAvgColIndex.run(m_intColIndex);
m_intColIndex = m_intColIndex - m_intAvgColIndex;
blnNewLine = true;
}
else if (m_intColIndex >= m_intNumberSamplePerLine + 2) // No valid H sync
{
m_intColIndex = 0;
blnNewLine = true;
}
if (blnNewLine)
{
m_fltAmpLineAverage=0.0f; m_fltAmpLineAverage=0.0f;
//New line + Interleaving //New line + Interleaving
@ -524,6 +547,36 @@ void ATVDemod::demod(Complex& c)
} }
} }
// //Horizontal Synchro
// if ((m_blnSynchroDetected)
// || (m_intColIndex >= m_intNumberSamplePerLine + 2)
// || (!m_objRunning.m_blnHSync && (m_intColIndex >= m_intNumberSamplePerLine)))
// {
// if (m_blnSynchroDetected
// && (m_intRowIndex > m_intNumberOfSyncLines)
// && (m_intColIndex > m_intNumberSamplePerLine - m_intNumberSamplePerTop)
// && (m_intColIndex < m_intNumberSamplePerLine + m_intNumberSamplePerTop))
// {
// m_intAvgColIndex = m_objAvgColIndex.run(m_intColIndex);
// m_intColIndex = m_intColIndex - m_intAvgColIndex;
// }
// else
// {
// m_intColIndex = 0;
// }
//
// m_fltAmpLineAverage=0.0f;
//
// //New line + Interleaving
// m_intRowIndex ++;
// m_intRowIndex ++;
//
// if(m_intRowIndex<m_intNumberOfLines)
// {
// m_objRegisteredATVScreen->selectRow(m_intRowIndex - m_intNumberOfSyncLines);
// }
// }
////////////////////// //////////////////////
if(m_intRowIndex>=m_intRowsLimit) if(m_intRowIndex>=m_intRowsLimit)