/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2021, Google Inc. * * generic_camera_buffer.cpp - Generic Android frame buffer backend */ #include "../camera_buffer.h" #include "libcamera/internal/buffer.h" #include "libcamera/internal/log.h" using namespace libcamera; LOG_DECLARE_CATEGORY(HAL) class CameraBuffer::Private : public Extensible::Private, public libcamera::MappedBuffer { LIBCAMERA_DECLARE_PUBLIC(CameraBuffer) public: Private(CameraBuffer *cameraBuffer, buffer_handle_t camera3Buffer, int flags); ~Private(); unsigned int numPlanes() const; Span plane(unsigned int plane); size_t jpegBufferSize(size_t maxJpegBufferSize) const; }; CameraBuffer::Private::Private(CameraBuffer *cameraBuffer, buffer_handle_t camera3Buffer, int flags) : Extensible::Private(cameraBuffer) { maps_.reserve(camera3Buffer->numFds); error_ = 0; for (int i = 0; i < camera3Buffer->numFds; i++) { if (camera3Buffer->data[i] == -1) continue; off_t length = lseek(camera3Buffer->data[i], 0, SEEK_END); if (length < 0) { error_ = -errno; LOG(HAL, Error) << "Failed to query plane length"; break; } void *address = mmap(nullptr, length, flags, MAP_SHARED, camera3Buffer->data[i], 0); if (address == MAP_FAILED) { error_ = -errno; LOG(HAL, Error) << "Failed to mmap plane"; break; } maps_.emplace_back(static_cast(address), static_cast(length)); } } CameraBuffer::Private::~Private() { } unsigned int CameraBuffer::Private::numPlanes() const { return maps_.size(); } Span CameraBuffer::Private::plane(unsigned int plane) { if (plane >= maps_.size()) return {}; return maps_[plane]; } size_t CameraBuffer::Private::jpegBufferSize(size_t maxJpegBufferSize) const { return std::min(maps_[0].size(), maxJpegBufferSize); } PUBLIC_CAMERA_BUFFER_IMPLEMENTATION onepro Jacopo Mondi's clone of libcameragit repository hosting on libcamera.org
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * event-dispatcher.cpp - Event dispatcher test
 */

#include <chrono>
#include <iostream>
#include <signal.h>
#include <sys/time.h>

#include <libcamera/event_dispatcher.h>
#include <libcamera/timer.h>

#include "test.h"
#include "thread.h"

using namespace std;
using namespace libcamera;

static EventDispatcher *dispatcher;
static bool interrupt;

class EventDispatcherTest : public Test
{
protected:
	static void sigAlarmHandler(int)
	{
		cout << "SIGALARM received" << endl;
		if (interrupt)
			dispatcher->interrupt();
	}

	int init()
	{
		dispatcher = Thread::current()->eventDispatcher();

		struct sigaction sa = {};
		sa.sa_handler = &sigAlarmHandler;
		sigaction(SIGALRM, &sa, nullptr);

		return 0;
	}

	int run()
	{
		Timer timer;

		/* Event processing interruption by signal. */
		std::chrono::steady_clock::time_point start = std::chrono::steady_clock::now();

		timer.start(1000);

		struct itimerval itimer = {};
		itimer.it_value.tv_usec = 500000;
		interrupt = false;
		setitimer(ITIMER_REAL, &itimer, nullptr);

		dispatcher->processEvents();

		std::chrono::steady_clock::time_point stop = std::chrono::steady_clock::now();
		std::chrono::steady_clock::duration duration = stop - start;
		int msecs = std::chrono::duration_cast<std::chrono::milliseconds>(duration).count();

		if (abs(msecs - 1000) > 50) {
			cout << "Event processing restart test failed" << endl;
			return TestFail;
		}

		/* Event processing interruption. */
		timer.start(1000);
		dispatcher->interrupt();

		dispatcher->processEvents();

		if (!timer.isRunning()) {
			cout << "Event processing immediate interruption failed" << endl;
			return TestFail;
		}