Message ID | 20211013154125.133419-6-jeanmichel.hautbois@ideasonboard.com |
---|---|
State | Superseded |
Headers | show |
Series |
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Related | show |
Quoting Jean-Michel Hautbois (2021-10-13 16:41:17) > The exposure value is filtered in filterExposure() using the > currentExposure_ and setting a prevExposure_ variable. This is misnamed > as it is not the previous exposure, but a filtered value. > > Rename it accordingly. > Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> > Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> > --- > src/ipa/ipu3/algorithms/agc.cpp | 28 ++++++++++++++-------------- > src/ipa/ipu3/algorithms/agc.h | 4 ++-- > 2 files changed, 16 insertions(+), 16 deletions(-) > > diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp > index 5eafe82c..7c2d4201 100644 > --- a/src/ipa/ipu3/algorithms/agc.cpp > +++ b/src/ipa/ipu3/algorithms/agc.cpp > @@ -49,7 +49,7 @@ static constexpr double kEvGainTarget = 0.5; > > Agc::Agc() > : frameCount_(0), lastFrame_(0), iqMean_(0.0), lineDuration_(0s), > - maxExposureTime_(0s), prevExposure_(0s), prevExposureNoDg_(0s), > + maxExposureTime_(0s), filteredExposure_(0s), filteredExposureNoDg_(0s), > currentExposure_(0s), currentExposureNoDg_(0s) > { > } > @@ -94,24 +94,24 @@ void Agc::processBrightness(const ipu3_uapi_stats_3a *stats, > void Agc::filterExposure() > { > double speed = 0.2; > - if (prevExposure_ == 0s) { > + if (filteredExposure_ == 0s) { > /* DG stands for digital gain.*/ > - prevExposure_ = currentExposure_; > - prevExposureNoDg_ = currentExposureNoDg_; > + filteredExposure_ = currentExposure_; > + filteredExposureNoDg_ = currentExposureNoDg_; > } else { > /* > * If we are close to the desired result, go faster to avoid making > * multiple micro-adjustments. > * \ todo: Make this customisable? > */ > - if (prevExposure_ < 1.2 * currentExposure_ && > - prevExposure_ > 0.8 * currentExposure_) > + if (filteredExposure_ < 1.2 * currentExposure_ && > + filteredExposure_ > 0.8 * currentExposure_) > speed = sqrt(speed); > > - prevExposure_ = speed * currentExposure_ + > - prevExposure_ * (1.0 - speed); > - prevExposureNoDg_ = speed * currentExposureNoDg_ + > - prevExposureNoDg_ * (1.0 - speed); > + filteredExposure_ = speed * currentExposure_ + > + filteredExposure_ * (1.0 - speed); > + filteredExposureNoDg_ = speed * currentExposureNoDg_ + > + filteredExposureNoDg_ * (1.0 - speed); > } > /* > * We can't let the no_dg exposure deviate too far below the > @@ -119,10 +119,10 @@ void Agc::filterExposure() > * in the ISP to hide it (which will cause nasty oscillation). > */ > double fastReduceThreshold = 0.4; > - if (prevExposureNoDg_ < > - prevExposure_ * fastReduceThreshold) > - prevExposureNoDg_ = prevExposure_ * fastReduceThreshold; > - LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << prevExposure_; > + if (filteredExposureNoDg_ < > + filteredExposure_ * fastReduceThreshold) > + filteredExposureNoDg_ = filteredExposure_ * fastReduceThreshold; > + LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << filteredExposure_; > } > > void Agc::lockExposureGain(uint32_t &exposure, double &gain) > diff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h > index 64b71c65..cd4d4855 100644 > --- a/src/ipa/ipu3/algorithms/agc.h > +++ b/src/ipa/ipu3/algorithms/agc.h > @@ -46,8 +46,8 @@ private: > Duration lineDuration_; > Duration maxExposureTime_; > > - Duration prevExposure_; > - Duration prevExposureNoDg_; > + Duration filteredExposure_; > + Duration filteredExposureNoDg_; > Duration currentExposure_; > Duration currentExposureNoDg_; > > -- > 2.30.2 >
Hi Jean-Michel, Thank you for the patch. On Wed, Oct 13, 2021 at 05:41:17PM +0200, Jean-Michel Hautbois wrote: > The exposure value is filtered in filterExposure() using the > currentExposure_ and setting a prevExposure_ variable. This is misnamed > as it is not the previous exposure, but a filtered value. > > Rename it accordingly. > > Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > src/ipa/ipu3/algorithms/agc.cpp | 28 ++++++++++++++-------------- > src/ipa/ipu3/algorithms/agc.h | 4 ++-- > 2 files changed, 16 insertions(+), 16 deletions(-) > > diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp > index 5eafe82c..7c2d4201 100644 > --- a/src/ipa/ipu3/algorithms/agc.cpp > +++ b/src/ipa/ipu3/algorithms/agc.cpp > @@ -49,7 +49,7 @@ static constexpr double kEvGainTarget = 0.5; > > Agc::Agc() > : frameCount_(0), lastFrame_(0), iqMean_(0.0), lineDuration_(0s), > - maxExposureTime_(0s), prevExposure_(0s), prevExposureNoDg_(0s), > + maxExposureTime_(0s), filteredExposure_(0s), filteredExposureNoDg_(0s), > currentExposure_(0s), currentExposureNoDg_(0s) > { > } > @@ -94,24 +94,24 @@ void Agc::processBrightness(const ipu3_uapi_stats_3a *stats, > void Agc::filterExposure() > { > double speed = 0.2; > - if (prevExposure_ == 0s) { > + if (filteredExposure_ == 0s) { > /* DG stands for digital gain.*/ > - prevExposure_ = currentExposure_; > - prevExposureNoDg_ = currentExposureNoDg_; > + filteredExposure_ = currentExposure_; > + filteredExposureNoDg_ = currentExposureNoDg_; > } else { > /* > * If we are close to the desired result, go faster to avoid making > * multiple micro-adjustments. > * \ todo: Make this customisable? > */ > - if (prevExposure_ < 1.2 * currentExposure_ && > - prevExposure_ > 0.8 * currentExposure_) > + if (filteredExposure_ < 1.2 * currentExposure_ && > + filteredExposure_ > 0.8 * currentExposure_) > speed = sqrt(speed); > > - prevExposure_ = speed * currentExposure_ + > - prevExposure_ * (1.0 - speed); > - prevExposureNoDg_ = speed * currentExposureNoDg_ + > - prevExposureNoDg_ * (1.0 - speed); > + filteredExposure_ = speed * currentExposure_ + > + filteredExposure_ * (1.0 - speed); > + filteredExposureNoDg_ = speed * currentExposureNoDg_ + > + filteredExposureNoDg_ * (1.0 - speed); > } > /* > * We can't let the no_dg exposure deviate too far below the > @@ -119,10 +119,10 @@ void Agc::filterExposure() > * in the ISP to hide it (which will cause nasty oscillation). > */ > double fastReduceThreshold = 0.4; > - if (prevExposureNoDg_ < > - prevExposure_ * fastReduceThreshold) > - prevExposureNoDg_ = prevExposure_ * fastReduceThreshold; > - LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << prevExposure_; > + if (filteredExposureNoDg_ < > + filteredExposure_ * fastReduceThreshold) > + filteredExposureNoDg_ = filteredExposure_ * fastReduceThreshold; > + LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << filteredExposure_; > } > > void Agc::lockExposureGain(uint32_t &exposure, double &gain) > diff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h > index 64b71c65..cd4d4855 100644 > --- a/src/ipa/ipu3/algorithms/agc.h > +++ b/src/ipa/ipu3/algorithms/agc.h > @@ -46,8 +46,8 @@ private: > Duration lineDuration_; > Duration maxExposureTime_; > > - Duration prevExposure_; > - Duration prevExposureNoDg_; > + Duration filteredExposure_; > + Duration filteredExposureNoDg_; > Duration currentExposure_; > Duration currentExposureNoDg_; >
diff --git a/src/ipa/ipu3/algorithms/agc.cpp b/src/ipa/ipu3/algorithms/agc.cpp index 5eafe82c..7c2d4201 100644 --- a/src/ipa/ipu3/algorithms/agc.cpp +++ b/src/ipa/ipu3/algorithms/agc.cpp @@ -49,7 +49,7 @@ static constexpr double kEvGainTarget = 0.5; Agc::Agc() : frameCount_(0), lastFrame_(0), iqMean_(0.0), lineDuration_(0s), - maxExposureTime_(0s), prevExposure_(0s), prevExposureNoDg_(0s), + maxExposureTime_(0s), filteredExposure_(0s), filteredExposureNoDg_(0s), currentExposure_(0s), currentExposureNoDg_(0s) { } @@ -94,24 +94,24 @@ void Agc::processBrightness(const ipu3_uapi_stats_3a *stats, void Agc::filterExposure() { double speed = 0.2; - if (prevExposure_ == 0s) { + if (filteredExposure_ == 0s) { /* DG stands for digital gain.*/ - prevExposure_ = currentExposure_; - prevExposureNoDg_ = currentExposureNoDg_; + filteredExposure_ = currentExposure_; + filteredExposureNoDg_ = currentExposureNoDg_; } else { /* * If we are close to the desired result, go faster to avoid making * multiple micro-adjustments. * \ todo: Make this customisable? */ - if (prevExposure_ < 1.2 * currentExposure_ && - prevExposure_ > 0.8 * currentExposure_) + if (filteredExposure_ < 1.2 * currentExposure_ && + filteredExposure_ > 0.8 * currentExposure_) speed = sqrt(speed); - prevExposure_ = speed * currentExposure_ + - prevExposure_ * (1.0 - speed); - prevExposureNoDg_ = speed * currentExposureNoDg_ + - prevExposureNoDg_ * (1.0 - speed); + filteredExposure_ = speed * currentExposure_ + + filteredExposure_ * (1.0 - speed); + filteredExposureNoDg_ = speed * currentExposureNoDg_ + + filteredExposureNoDg_ * (1.0 - speed); } /* * We can't let the no_dg exposure deviate too far below the @@ -119,10 +119,10 @@ void Agc::filterExposure() * in the ISP to hide it (which will cause nasty oscillation). */ double fastReduceThreshold = 0.4; - if (prevExposureNoDg_ < - prevExposure_ * fastReduceThreshold) - prevExposureNoDg_ = prevExposure_ * fastReduceThreshold; - LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << prevExposure_; + if (filteredExposureNoDg_ < + filteredExposure_ * fastReduceThreshold) + filteredExposureNoDg_ = filteredExposure_ * fastReduceThreshold; + LOG(IPU3Agc, Debug) << "After filtering, total_exposure " << filteredExposure_; } void Agc::lockExposureGain(uint32_t &exposure, double &gain) diff --git a/src/ipa/ipu3/algorithms/agc.h b/src/ipa/ipu3/algorithms/agc.h index 64b71c65..cd4d4855 100644 --- a/src/ipa/ipu3/algorithms/agc.h +++ b/src/ipa/ipu3/algorithms/agc.h @@ -46,8 +46,8 @@ private: Duration lineDuration_; Duration maxExposureTime_; - Duration prevExposure_; - Duration prevExposureNoDg_; + Duration filteredExposure_; + Duration filteredExposureNoDg_; Duration currentExposure_; Duration currentExposureNoDg_;
The exposure value is filtered in filterExposure() using the currentExposure_ and setting a prevExposure_ variable. This is misnamed as it is not the previous exposure, but a filtered value. Rename it accordingly. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> --- src/ipa/ipu3/algorithms/agc.cpp | 28 ++++++++++++++-------------- src/ipa/ipu3/algorithms/agc.h | 4 ++-- 2 files changed, 16 insertions(+), 16 deletions(-)