libcamera/pinchartl/libcamera.git - Laurent Pinchart's clone of libcamera

Age	Commit message (Collapse)	Author
2020-11-03	utils: tracepoints: Add simple statistics script	Paul Elder
	Add a script that scans a trace for IPA call tracepoints, and returns statistics on the time taken for IPA calls. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2020-11-03	libcamera: tracing: Implement tracing infrastructure	Paul Elder
	Implement tracing infrastructure in libcamera. It takes .tp files, as required by lttng, and generates a tracepoint header and C file, as lttng requires. meson is updated accordingly to get it to compile with the rest of libcamera. Update the documentation accordingly. Signed-off-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

/* SPDX-License-Identifier: BSD-2-Clause */ /* * Copyright (C) 2019, Raspberry Pi (Trading) Limited * * cam_helper_ov5647.cpp - camera information for ov5647 sensor */ #include <assert.h> #include "cam_helper.hpp" #include "md_parser_rpi.hpp" using namespace RPiController; class CamHelperOv5647 : public CamHelper { public: CamHelperOv5647(); uint32_t GainCode(double gain) const override; double Gain(uint32_t gain_code) const override; void GetDelays(int &exposure_delay, int &gain_delay) const override; unsigned int HideFramesModeSwitch() const override; unsigned int MistrustFramesStartup() const override; unsigned int MistrustFramesModeSwitch() const override; }; /* * OV5647 doesn't output metadata, so we have to use the "unicam parser" which * works by counting frames. */ CamHelperOv5647::CamHelperOv5647() : CamHelper(new MdParserRPi()) { } uint32_t CamHelperOv5647::GainCode(double gain) const { return static_cast<uint32_t>(gain * 16.0); } double CamHelperOv5647::Gain(uint32_t gain_code) const { return static_cast<double>(gain_code) / 16.0; } void CamHelperOv5647::GetDelays(int &exposure_delay, int &gain_delay) const { /* * We run this sensor in a mode where the gain delay is bumped up to * 2. It seems to be the only way to make the delays "predictable". */ exposure_delay = 2; gain_delay = 2; } unsigned int CamHelperOv5647::HideFramesModeSwitch() const { /* * After a mode switch, we get a couple of under-exposed frames which * we don't want shown. */ return 2; } unsigned int CamHelperOv5647::MistrustFramesStartup() const { /* * First couple of frames are under-exposed and are no good for control * algos. */ return 2; } unsigned int CamHelperOv5647::MistrustFramesModeSwitch() const { /* * First couple of frames are under-exposed even after a simple * mode switch, and are no good for control algos. */ return 2; } static CamHelper *Create() { return new CamHelperOv5647(); } static RegisterCamHelper reg("ov5647", &Create);