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ipa: raspberrypi: agc: Add GetConvergenceFrames method to AGC base class

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We add a GetConvergenceFrames method to the AgcAlgorithm class which
can be called when the AGC is started from scratch. It suggests how
many frames should be dropped before displaying any (while the AGC
converges).

The Raspberry Pi specific implementation makes this customisable from
the tuning file.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
David Plowman 2020-12-08 20:44:37 +00:00 • committed by Laurent Pinchart
parent 10bcc51ca3
commit 748f48a006
3 changed files with 14 additions and 0 deletions
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2
src/ipa/raspberrypi/controller/rpi/agc.hpp
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@ -52,6 +52,7 @@ struct AgcConfig {
Pwl Y_target;
double speed;
uint16_t startup_frames;
unsigned int convergence_frames;
double max_change;
double min_change;
double fast_reduce_threshold;
@ -74,6 +75,7 @@ public:
bool IsPaused() const override;
void Pause() override;
void Resume() override;
unsigned int GetConvergenceFrames() const override;
void SetEv(double ev) override;
void SetFlickerPeriod(double flicker_period) override;
void SetFixedShutter(double fixed_shutter) override; // microseconds