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-rw-r--r--src/ipa/libipa/algorithms/af_hill_climbing.cpp8
-rw-r--r--src/ipa/libipa/algorithms/af_hill_climbing.h23
2 files changed, 30 insertions, 1 deletions
diff --git a/src/ipa/libipa/algorithms/af_hill_climbing.cpp b/src/ipa/libipa/algorithms/af_hill_climbing.cpp
index f666c6c2..28d09176 100644
--- a/src/ipa/libipa/algorithms/af_hill_climbing.cpp
+++ b/src/ipa/libipa/algorithms/af_hill_climbing.cpp
@@ -84,6 +84,14 @@ namespace ipa::common::algorithms {
* \return New lens position calculated by AF algorithm
*/
+/**
+ * \fn AfHillClimbing::setFramesToSkip()
+ * \brief Request AF to skip n frames
+ * \param[in] n Number of frames to be skipped
+ *
+ * Requested number of frames will not be used for AF calculation.
+ */
+
} /* namespace ipa::common::algorithms */
} /* namespace libcamera */
diff --git a/src/ipa/libipa/algorithms/af_hill_climbing.h b/src/ipa/libipa/algorithms/af_hill_climbing.h
index db9fc058..e251f3eb 100644
--- a/src/ipa/libipa/algorithms/af_hill_climbing.h
+++ b/src/ipa/libipa/algorithms/af_hill_climbing.h
@@ -29,7 +29,7 @@ public:
lensPosition_(0), bestPosition_(0), currentContrast_(0.0),
previousContrast_(0.0), maxContrast_(0.0), maxStep_(0),
coarseCompleted_(false), fineCompleted_(false),
- lowStep_(0), highStep_(kMaxFocusSteps)
+ lowStep_(0), highStep_(kMaxFocusSteps), framesToSkip_(0)
{
}
@@ -92,6 +92,9 @@ protected:
{
currentContrast_ = currentContrast;
+ if (shouldSkipFrame())
+ return lensPosition_;
+
/* If we are in a paused state, we won't process the stats */
if (pauseState_ == libcamera::controls::AfPauseStatePaused)
return lensPosition_;
@@ -113,6 +116,12 @@ protected:
return lensPosition_;
}
+ void setFramesToSkip(uint32_t n)
+ {
+ if (n > framesToSkip_)
+ framesToSkip_ = n;
+ }
+
private:
void afCoarseScan()
{
@@ -191,6 +200,7 @@ private:
coarseCompleted_ = false;
fineCompleted_ = false;
maxContrast_ = 0.0;
+ setFramesToSkip(1);
}
bool afIsOutOfFocus()
@@ -206,6 +216,16 @@ private:
return false;
}
+ bool shouldSkipFrame()
+ {
+ if (framesToSkip_ > 0) {
+ framesToSkip_--;
+ return true;
+ }
+
+ return false;
+ }
+
controls::AfModeEnum mode_;
controls::AfStateEnum state_;
controls::AfPauseStateEnum pauseState_;
@@ -229,6 +249,7 @@ private:
uint32_t lowStep_;
uint32_t highStep_;
+ uint32_t framesToSkip_;
/*
* Maximum focus steps of the VCM control