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ATV Demod: classical vsync enhanced hsync correction: correcting only once per full frame with amortizing
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@ -528,25 +528,34 @@ private:
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bool blnNewLine = false;
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if (m_blnSynchroDetected)
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{
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m_intAvgColIndex = m_intSampleIndex - m_intColIndex - (m_intColIndex < m_intNumberSamplePerLine/2 ? 150 : 0);
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//qDebug("HSync: %d %d %d", m_intSampleIndex, m_intColIndex, m_intAvgColIndex);
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m_intSampleIndex = 0;
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}
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else
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{
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m_intSampleIndex++;
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}
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if (!m_objRunning.m_blnHSync && (m_intColIndex >= m_intNumberSamplePerLine)) // H Sync not active
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{
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m_intColIndex = 0;
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blnNewLine = true;
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}
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else if (m_objRunning.m_blnHSync && m_blnSynchroDetected // Valid H sync detected
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&& (m_intColIndex > m_intNumberSamplePerLine - m_intNumberSamplePerTop)
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&& (m_intColIndex < m_intNumberSamplePerLine + m_intNumberSamplePerTop))
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{
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// qDebug("HSync: %d", m_intColIndex);
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// m_intColIndex = 0;
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m_intAvgColIndex = m_objAvgColIndex.run(m_intColIndex);
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m_intColIndex = m_intColIndex - m_intAvgColIndex;
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blnNewLine = true;
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}
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else if (m_intColIndex >= m_intNumberSamplePerLine + m_intNumberSamplePerTop) // No valid H sync
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{
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//qDebug("HLine: %d", m_intColIndex);
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m_intColIndex = m_intNumberSamplePerTop;
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if (m_objRunning.m_blnHSync && (m_intLineIndex == 0))
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{
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//qDebug("HSync: %d %d", m_intColIndex, m_intAvgColIndex);
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m_intColIndex = m_intNumberSamplePerTop + m_intAvgColIndex/4; // amortizing 1/4
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}
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else
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{
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m_intColIndex = m_intNumberSamplePerTop;
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}
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blnNewLine = true;
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}
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@ -585,7 +594,8 @@ private:
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// Filling pixels
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m_objRegisteredATVScreen->setDataColor(m_intColIndex - m_intNumberSaplesPerHSync + m_intNumberSamplePerTop, intVal, intVal, intVal);
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// +4 is to compensate shift due to hsync amortizing factor of 1/4
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m_objRegisteredATVScreen->setDataColor(m_intColIndex - m_intNumberSaplesPerHSync + m_intNumberSamplePerTop + 4, intVal, intVal, intVal);
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m_intColIndex++;
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// Vertical sync and image rendering
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