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Implement exposure and whitebalance lock for gstreamer camera.

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Change-Id: I58277d69c18ad2e31cad719a2dd6361c0c2d7e98
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
This commit is contained in:
Andrew den Exter
2014-11-25 09:22:23 +10:00
parent dc2fec1bd8
commit 9932feec63
4 changed files with 227 additions and 18 deletions
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56
src/plugins/gstreamer/camerabin/camerabinimageprocessing.cpp
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@@ -44,15 +44,17 @@ QT_BEGIN_NAMESPACE
CameraBinImageProcessing::CameraBinImageProcessing(CameraBinSession *session)
:QCameraImageProcessingControl(session),
m_session(session)
m_session(session),
m_whiteBalanceMode(QCameraImageProcessing::WhiteBalanceAuto)
{
#ifdef HAVE_GST_PHOTOGRAPHY
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_AUTO] = QCameraImageProcessing::WhiteBalanceAuto;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_DAYLIGHT] = QCameraImageProcessing::WhiteBalanceSunlight;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_CLOUDY] = QCameraImageProcessing::WhiteBalanceCloudy;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_SUNSET] = QCameraImageProcessing::WhiteBalanceSunset;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_TUNGSTEN] = QCameraImageProcessing::WhiteBalanceTungsten;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_FLUORESCENT] = QCameraImageProcessing::WhiteBalanceFluorescent;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_AUTO] = QCameraImageProcessing::WhiteBalanceAuto;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_DAYLIGHT] = QCameraImageProcessing::WhiteBalanceSunlight;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_CLOUDY] = QCameraImageProcessing::WhiteBalanceCloudy;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_SUNSET] = QCameraImageProcessing::WhiteBalanceSunset;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_TUNGSTEN] = QCameraImageProcessing::WhiteBalanceTungsten;
m_mappedWbValues[GST_PHOTOGRAPHY_WB_MODE_FLUORESCENT] = QCameraImageProcessing::WhiteBalanceFluorescent;
unlockWhiteBalance();
#endif
updateColorBalanceValues();
@@ -129,20 +131,23 @@ bool CameraBinImageProcessing::setColorBalanceValue(const QString& channel, qrea
QCameraImageProcessing::WhiteBalanceMode CameraBinImageProcessing::whiteBalanceMode() const
{
#ifdef HAVE_GST_PHOTOGRAPHY
GstPhotographyWhiteBalanceMode wbMode;
gst_photography_get_white_balance_mode(m_session->photography(), &wbMode);
return m_mappedWbValues[wbMode];
#else
return QCameraImageProcessing::WhiteBalanceAuto;
#endif
return m_whiteBalanceMode;
}
void CameraBinImageProcessing::setWhiteBalanceMode(QCameraImageProcessing::WhiteBalanceMode mode)
{
#ifdef HAVE_GST_PHOTOGRAPHY
if (isWhiteBalanceModeSupported(mode))
gst_photography_set_white_balance_mode(m_session->photography(), m_mappedWbValues.key(mode));
if (isWhiteBalanceModeSupported(mode)) {
m_whiteBalanceMode = mode;
#if GST_CHECK_VERSION(1, 2, 0)
GstPhotographyWhiteBalanceMode currentMode;
if (gst_photography_get_white_balance_mode(m_session->photography(), &currentMode)
&& currentMode != GST_PHOTOGRAPHY_WB_MODE_MANUAL)
#endif
{
unlockWhiteBalance();
}
}
#else
Q_UNUSED(mode);
#endif
@@ -215,4 +220,23 @@ void CameraBinImageProcessing::setParameter(QCameraImageProcessingControl::Proce
updateColorBalanceValues();
}
#ifdef HAVE_GST_PHOTOGRAPHY
void CameraBinImageProcessing::lockWhiteBalance()
{
#if GST_CHECK_VERSION(1, 2, 0)
if (GstPhotography *photography = m_session->photography()) {
gst_photography_set_white_balance_mode(photography, GST_PHOTOGRAPHY_WB_MODE_MANUAL);
}
#endif
}
void CameraBinImageProcessing::unlockWhiteBalance()
{
if (GstPhotography *photography = m_session->photography()) {
gst_photography_set_white_balance_mode(
photography, m_mappedWbValues.key(m_whiteBalanceMode));
}
}
#endif
QT_END_NAMESPACE