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, 115 deletions

diff --git a/src/ipa/raspberrypi/cam_helper_imx219.cpp b/src/ipa/raspberrypi/cam_helper_imx219.cpp
deleted file mode 100644
index c3337ed0..00000000
--- a/src/ipa/raspberrypi/cam_helper_imx219.cpp
+++ /dev/null
@@ -1,115 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * cam_helper_imx219.cpp - camera helper for imx219 sensor
- */
-
-#include <assert.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-/*
- * We have observed that the imx219 embedded data stream randomly returns junk
- * register values. Do not rely on embedded data until this has been resolved.
- */
-#define ENABLE_EMBEDDED_DATA 0
-
-#include "cam_helper.h"
-#if ENABLE_EMBEDDED_DATA
-#include "md_parser.h"
-#endif
-
-using namespace RPiController;
-
-/*
- * We care about one gain register and a pair of exposure registers. Their I2C
- * addresses from the Sony IMX219 datasheet:
- */
-constexpr uint32_t gainReg = 0x157;
-constexpr uint32_t expHiReg = 0x15a;
-constexpr uint32_t expLoReg = 0x15b;
-constexpr uint32_t frameLengthHiReg = 0x160;
-constexpr uint32_t frameLengthLoReg = 0x161;
-constexpr uint32_t lineLengthHiReg = 0x162;
-constexpr uint32_t lineLengthLoReg = 0x163;
-constexpr std::initializer_list<uint32_t> registerList [[maybe_unused]]
-	= { expHiReg, expLoReg, gainReg, frameLengthHiReg, frameLengthLoReg,
-	    lineLengthHiReg, lineLengthLoReg };
-
-class CamHelperImx219 : public CamHelper
-{
-public:
-	CamHelperImx219();
-	uint32_t gainCode(double gain) const override;
-	double gain(uint32_t gainCode) const override;
-	unsigned int mistrustFramesModeSwitch() const override;
-	bool sensorEmbeddedDataPresent() const override;
-
-private:
-	/*
-	 * Smallest difference between the frame length and integration time,
-	 * in units of lines.
-	 */
-	static constexpr int frameIntegrationDiff = 4;
-
-	void populateMetadata(const MdParser::RegisterMap &registers,
-			      Metadata &metadata) const override;
-};
-
-CamHelperImx219::CamHelperImx219()
-#if ENABLE_EMBEDDED_DATA
-	: CamHelper(std::make_unique<MdParserSmia>(registerList), frameIntegrationDiff)
-#else
-	: CamHelper({}, frameIntegrationDiff)
-#endif
-{
-}
-
-uint32_t CamHelperImx219::gainCode(double gain) const
-{
-	return (uint32_t)(256 - 256 / gain);
-}
-
-double CamHelperImx219::gain(uint32_t gainCode) const
-{
-	return 256.0 / (256 - gainCode);
-}
-
-unsigned int CamHelperImx219::mistrustFramesModeSwitch() const
-{
-	/*
-	 * For reasons unknown, we do occasionally get a bogus metadata frame
-	 * at a mode switch (though not at start-up). Possibly warrants some
-	 * investigation, though not a big deal.
-	 */
-	return 1;
-}
-
-bool CamHelperImx219::sensorEmbeddedDataPresent() const
-{
-	return ENABLE_EMBEDDED_DATA;
-}
-
-void CamHelperImx219::populateMetadata(const MdParser::RegisterMap &registers,
-				       Metadata &metadata) const
-{
-	DeviceStatus deviceStatus;
-
-	deviceStatus.lineLength = lineLengthPckToDuration(registers.at(lineLengthHiReg) * 256 +
-							  registers.at(lineLengthLoReg));
-	deviceStatus.shutterSpeed = exposure(registers.at(expHiReg) * 256 + registers.at(expLoReg),
-					     deviceStatus.lineLength);
-	deviceStatus.analogueGain = gain(registers.at(gainReg));
-	deviceStatus.frameLength = registers.at(frameLengthHiReg) * 256 + registers.at(frameLengthLoReg);
-
-	metadata.set("device.status", deviceStatus);
-}
-
-static CamHelper *create()
-{
-	return new CamHelperImx219();
-}
-
-static RegisterCamHelper reg("imx219", &create);