ipa: raspberrypi: Rename header files from *.hpp to *.h
As per the libcamera coding guidelines, rename all .hpp header files to .h. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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53 changed files with 101 additions and 101 deletions
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/* SPDX-License-Identifier: BSD-2-Clause */
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/*
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* Copyright (C) 2019, Raspberry Pi (Trading) Limited
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*
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* md_parser.hpp - image sensor metadata parser interface
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*/
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#pragma once
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#include <initializer_list>
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#include <map>
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#include <optional>
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#include <stdint.h>
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#include <libcamera/base/span.h>
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/*
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* Camera metadata parser class. Usage as shown below.
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*
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* Setup:
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*
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* Usually the metadata parser will be made as part of the CamHelper class so
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* application code doesn't have to worry which kind to instantiate. But for
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* the sake of example let's suppose we're parsing imx219 metadata.
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*
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* MdParser *parser = new MdParserSmia({ expHiReg, expLoReg, gainReg });
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* parser->SetBitsPerPixel(bpp);
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* parser->SetLineLengthBytes(pitch);
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* parser->SetNumLines(2);
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*
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* Note 1: if you don't know how many lines there are, the size of the input
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* buffer is used as a limit instead.
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*
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* Note 2: if you don't know the line length, you can leave the line length unset
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* (or set to zero) and the parser will hunt for the line start instead.
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*
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* Then on every frame:
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*
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* RegisterMap registers;
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* if (parser->Parse(buffer, registers) != MdParser::OK)
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* much badness;
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* Metadata metadata;
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* CamHelper::PopulateMetadata(registers, metadata);
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*
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* (Note that the CamHelper class converts to/from exposure lines and time,
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* and gain_code / actual gain.)
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*
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* If you suspect your embedded data may have changed its layout, change any line
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* lengths, number of lines, bits per pixel etc. that are different, and
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* then:
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*
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* parser->Reset();
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*
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* before calling Parse again.
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*/
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namespace RPiController {
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/* Abstract base class from which other metadata parsers are derived. */
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class MdParser
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{
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public:
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using RegisterMap = std::map<uint32_t, uint32_t>;
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/*
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* Parser status codes:
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* OK - success
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* NOTFOUND - value such as exposure or gain was not found
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* ERROR - all other errors
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*/
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enum Status {
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OK = 0,
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NOTFOUND = 1,
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ERROR = 2
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};
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MdParser()
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: reset_(true), bitsPerPixel_(0), numLines_(0), lineLengthBytes_(0)
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{
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}
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virtual ~MdParser() = default;
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void reset()
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{
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reset_ = true;
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}
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void setBitsPerPixel(int bpp)
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{
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bitsPerPixel_ = bpp;
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}
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void setNumLines(unsigned int numLines)
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{
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numLines_ = numLines;
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}
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void setLineLengthBytes(unsigned int numBytes)
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{
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lineLengthBytes_ = numBytes;
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}
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virtual Status parse(libcamera::Span<const uint8_t> buffer,
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RegisterMap ®isters) = 0;
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protected:
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bool reset_;
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int bitsPerPixel_;
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unsigned int numLines_;
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unsigned int lineLengthBytes_;
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};
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/*
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* This isn't a full implementation of a metadata parser for SMIA sensors,
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* however, it does provide the findRegs function which will prove useful and
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* make it easier to implement parsers for other SMIA-like sensors (see
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* md_parser_imx219.cpp for an example).
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*/
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class MdParserSmia final : public MdParser
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{
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public:
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MdParserSmia(std::initializer_list<uint32_t> registerList);
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MdParser::Status parse(libcamera::Span<const uint8_t> buffer,
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RegisterMap ®isters) override;
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private:
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/* Maps register address to offset in the buffer. */
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using OffsetMap = std::map<uint32_t, std::optional<uint32_t>>;
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/*
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* Note that error codes > 0 are regarded as non-fatal; codes < 0
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* indicate a bad data buffer. Status codes are:
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* ParseOk - found all registers, much happiness
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* MissingRegs - some registers found; should this be a hard error?
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* The remaining codes are all hard errors.
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*/
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enum ParseStatus {
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ParseOk = 0,
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MissingRegs = 1,
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NoLineStart = -1,
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IllegalTag = -2,
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BadDummy = -3,
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BadLineEnd = -4,
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BadPadding = -5
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};
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ParseStatus findRegs(libcamera::Span<const uint8_t> buffer);
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OffsetMap offsets_;
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};
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} /* namespace RPi */
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