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, 155 deletions

diff --git a/src/ipa/raspberrypi/md_parser.h b/src/ipa/raspberrypi/md_parser.h
deleted file mode 100644
index 77d557aa..00000000
--- a/src/ipa/raspberrypi/md_parser.h
+++ /dev/null
@@ -1,155 +0,0 @@
-/* SPDX-License-Identifier: BSD-2-Clause */
-/*
- * Copyright (C) 2019, Raspberry Pi Ltd
- *
- * md_parser.h - image sensor metadata parser interface
- */
-#pragma once
-
-#include <initializer_list>
-#include <map>
-#include <optional>
-#include <stdint.h>
-
-#include <libcamera/base/span.h>
-
-/*
- * Camera metadata parser class. Usage as shown below.
- *
- * Setup:
- *
- * Usually the metadata parser will be made as part of the CamHelper class so
- * application code doesn't have to worry which kind to instantiate. But for
- * the sake of example let's suppose we're parsing imx219 metadata.
- *
- * MdParser *parser = new MdParserSmia({ expHiReg, expLoReg, gainReg });
- * parser->SetBitsPerPixel(bpp);
- * parser->SetLineLengthBytes(pitch);
- * parser->SetNumLines(2);
- *
- * Note 1: if you don't know how many lines there are, the size of the input
- * buffer is used as a limit instead.
- *
- * Note 2: if you don't know the line length, you can leave the line length unset
- * (or set to zero) and the parser will hunt for the line start instead.
- *
- * Then on every frame:
- *
- * RegisterMap registers;
- * if (parser->Parse(buffer, registers) != MdParser::OK)
- *     much badness;
- * Metadata metadata;
- * CamHelper::PopulateMetadata(registers, metadata);
- *
- * (Note that the CamHelper class converts to/from exposure lines and time,
- * and gain_code / actual gain.)
- *
- * If you suspect your embedded data may have changed its layout, change any line
- * lengths, number of lines, bits per pixel etc. that are different, and
- * then:
- *
- * parser->Reset();
- *
- * before calling Parse again.
- */
-
-namespace RPiController {
-
-/* Abstract base class from which other metadata parsers are derived. */
-
-class MdParser
-{
-public:
-	using RegisterMap = std::map<uint32_t, uint32_t>;
-
-	/*
-	 * Parser status codes:
-	 * OK       - success
-	 * NOTFOUND - value such as exposure or gain was not found
-	 * ERROR    - all other errors
-	 */
-	enum Status {
-		OK = 0,
-		NOTFOUND = 1,
-		ERROR = 2
-	};
-
-	MdParser()
-		: reset_(true), bitsPerPixel_(0), numLines_(0), lineLengthBytes_(0)
-	{
-	}
-
-	virtual ~MdParser() = default;
-
-	void reset()
-	{
-		reset_ = true;
-	}
-
-	void setBitsPerPixel(int bpp)
-	{
-		bitsPerPixel_ = bpp;
-	}
-
-	void setNumLines(unsigned int numLines)
-	{
-		numLines_ = numLines;
-	}
-
-	void setLineLengthBytes(unsigned int numBytes)
-	{
-		lineLengthBytes_ = numBytes;
-	}
-
-	virtual Status parse(libcamera::Span<const uint8_t> buffer,
-			     RegisterMap &registers) = 0;
-
-protected:
-	bool reset_;
-	int bitsPerPixel_;
-	unsigned int numLines_;
-	unsigned int lineLengthBytes_;
-};
-
-/*
- * This isn't a full implementation of a metadata parser for SMIA sensors,
- * however, it does provide the findRegs function which will prove useful and
- * make it easier to implement parsers for other SMIA-like sensors (see
- * md_parser_imx219.cpp for an example).
- */
-
-class MdParserSmia final : public MdParser
-{
-public:
-	MdParserSmia(std::initializer_list<uint32_t> registerList);
-
-	MdParser::Status parse(libcamera::Span<const uint8_t> buffer,
-			       RegisterMap &registers) override;
-
-private:
-	/* Maps register address to offset in the buffer. */
-	using OffsetMap = std::map<uint32_t, std::optional<uint32_t>>;
-
-	/*
-	 * Note that error codes > 0 are regarded as non-fatal; codes < 0
-	 * indicate a bad data buffer. Status codes are:
-	 * ParseOk     - found all registers, much happiness
-	 * MissingRegs - some registers found; should this be a hard error?
-	 * The remaining codes are all hard errors.
-	 */
-	enum ParseStatus {
-		ParseOk      =  0,
-		MissingRegs  =  1,
-		NoLineStart  = -1,
-		IllegalTag   = -2,
-		BadDummy     = -3,
-		BadLineEnd   = -4,
-		BadPadding   = -5
-	};
-
-	ParseStatus findRegs(libcamera::Span<const uint8_t> buffer);
-
-	OffsetMap offsets_;
-};
-
-} /* namespace RPi */