pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code

Split the Raspberry Pi pipeline handler and IPA source code into common
and VC4/BCM2835 specific file structures.

For the pipeline handler, the common code files now live in
src/libcamera/pipeline/rpi/common/
and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/.

For the IPA, the common code files now live in
src/ipa/rpi/{cam_helper,controller}/
and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the
camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/.

To build the pipeline and IPA, the meson configuration options have now
changed from "raspberrypi" to "rpi/vc4":

meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 0 insertions, 66 deletions

diff --git a/src/ipa/raspberrypi/cam_helper_ov9281.cpp b/src/ipa/raspberrypi/cam_helper_ov9281.cpp
deleted file mode 100644
index 86c5bc4c..00000000
--- a/src/ipa/raspberrypi/cam_helper_ov9281.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2021, Raspberry Pi Ltd
- *
- * cam_helper_ov9281.cpp - camera information for ov9281 sensor
- */
-
-#include <assert.h>
-
-#include "cam_helper.h"
-
-using namespace RPiController;
-
-class CamHelperOv9281 : public CamHelper
-{
-public:
-	CamHelperOv9281();
-	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;
-
-private:
-	/*
-	 * Smallest difference between the frame length and integration time,
-	 * in units of lines.
-	 */
-	static constexpr int frameIntegrationDiff = 4;
-};
-
-/*
- * OV9281 doesn't output metadata, so we have to use the "unicam parser" which
- * works by counting frames.
- */
-
-CamHelperOv9281::CamHelperOv9281()
-	: CamHelper({}, frameIntegrationDiff)
-{
-}
-
-uint32_t CamHelperOv9281::gainCode(double gain) const
-{
-	return static_cast<uint32_t>(gain * 16.0);
-}
-
-double CamHelperOv9281::gain(uint32_t gainCode) const
-{
-	return static_cast<double>(gainCode) / 16.0;
-}
-
-void CamHelperOv9281::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;
-}
-
-static CamHelper *create()
-{
-	return new CamHelperOv9281();
-}
-
-static RegisterCamHelper reg("ov9281", &create);