ipa: raspberrypi: Generalise the agc algorithm

Remove any hard-coded assumptions about the target hardware platform
from the AGC algorithm. Instead, use the "target" string provided by
the camera tuning config and generalised statistics structures to
determing parameters such as grid and region sizes.

This change replaces all hard-coded arrays with equivalent std::vector
types.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 1 insertions, 8 deletions

diff --git a/src/ipa/raspberrypi/controller/rpi/agc.h b/src/ipa/raspberrypi/controller/rpi/agc.h
index 4fa9b8de..4e5f272f 100644
--- a/src/ipa/raspberrypi/controller/rpi/agc.h
+++ b/src/ipa/raspberrypi/controller/rpi/agc.h
@@ -17,17 +17,10 @@
 
 /* This is our implementation of AGC. */
 
-/*
- * This is the number actually set up by the firmware, not the maximum possible
- * number (which is 16).
- */
-
-constexpr unsigned int AgcStatsSize = 15;
-
 namespace RPiController {
 
 struct AgcMeteringMode {
-	double weights[AgcStatsSize];
+	std::vector<double> weights;
 	int read(const libcamera::YamlObject &params);
 };