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Diffstat (limited to 'src/ipa/rpi/cam_helper/cam_helper_imx283.cpp')
-rw-r--r--src/ipa/rpi/cam_helper/cam_helper_imx283.cpp73
1 files changed, 73 insertions, 0 deletions
diff --git a/src/ipa/rpi/cam_helper/cam_helper_imx283.cpp b/src/ipa/rpi/cam_helper/cam_helper_imx283.cpp
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index 00000000..cb0be72a
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+++ b/src/ipa/rpi/cam_helper/cam_helper_imx283.cpp
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2024, Raspberry Pi Ltd
+ *
+ * cam_helper_Imx283.cpp - camera information for Imx283 sensor
+ */
+
+#include <assert.h>
+
+#include "cam_helper.h"
+
+using namespace RPiController;
+
+class CamHelperImx283 : public CamHelper
+{
+public:
+ CamHelperImx283();
+ uint32_t gainCode(double gain) const override;
+ double gain(uint32_t gainCode) const override;
+ void getDelays(int &exposureDelay, int &gainDelay,
+ int &vblankDelay, int &hblankDelay) const override;
+ unsigned int hideFramesModeSwitch() const override;
+
+private:
+ /*
+ * Smallest difference between the frame length and integration time,
+ * in units of lines.
+ */
+ static constexpr int frameIntegrationDiff = 4;
+};
+
+/*
+ * Imx283 doesn't output metadata, so we have to use the delayed controls which
+ * works by counting frames.
+ */
+
+CamHelperImx283::CamHelperImx283()
+ : CamHelper({}, frameIntegrationDiff)
+{
+}
+
+uint32_t CamHelperImx283::gainCode(double gain) const
+{
+ return static_cast<uint32_t>(2048.0 - 2048.0 / gain);
+}
+
+double CamHelperImx283::gain(uint32_t gainCode) const
+{
+ return static_cast<double>(2048.0 / (2048 - gainCode));
+}
+
+void CamHelperImx283::getDelays(int &exposureDelay, int &gainDelay,
+ int &vblankDelay, int &hblankDelay) const
+{
+ /* The driver appears to behave as follows: */
+ exposureDelay = 2;
+ gainDelay = 2;
+ vblankDelay = 2;
+ hblankDelay = 2;
+}
+
+unsigned int CamHelperImx283::hideFramesModeSwitch() const
+{
+ /* After a mode switch, we seem to get 1 bad frame. */
+ return 1;
+}
+
+static CamHelper *create()
+{
+ return new CamHelperImx283();
+}
+
+static RegisterCamHelper reg("imx283", &create);