apps: Share common source between applications

Multiple source files in the src/apps/cam/ directory are used by cam,
qcam and lc-compliance. They are compiled separately for each
application. Move them to a new src/apps/common/ directory and compile
them in a static library to decrease the number of compilation
operations.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 0 insertions, 150 deletions

diff --git a/src/apps/cam/event_loop.cpp b/src/apps/cam/event_loop.cpp
deleted file mode 100644
index cb83845c..00000000
--- a/src/apps/cam/event_loop.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2019, Google Inc.
- *
- * event_loop.cpp - cam - Event loop
- */
-
-#include "event_loop.h"
-
-#include <assert.h>
-#include <event2/event.h>
-#include <event2/thread.h>
-#include <iostream>
-
-EventLoop *EventLoop::instance_ = nullptr;
-
-EventLoop::EventLoop()
-{
-	assert(!instance_);
-
-	evthread_use_pthreads();
-	base_ = event_base_new();
-	instance_ = this;
-}
-
-EventLoop::~EventLoop()
-{
-	instance_ = nullptr;
-
-	events_.clear();
-	event_base_free(base_);
-	libevent_global_shutdown();
-}
-
-EventLoop *EventLoop::instance()
-{
-	return instance_;
-}
-
-int EventLoop::exec()
-{
-	exitCode_ = -1;
-	event_base_loop(base_, EVLOOP_NO_EXIT_ON_EMPTY);
-	return exitCode_;
-}
-
-void EventLoop::exit(int code)
-{
-	exitCode_ = code;
-	event_base_loopbreak(base_);
-}
-
-void EventLoop::callLater(const std::function<void()> &func)
-{
-	{
-		std::unique_lock<std::mutex> locker(lock_);
-		calls_.push_back(func);
-	}
-
-	event_base_once(base_, -1, EV_TIMEOUT, dispatchCallback, this, nullptr);
-}
-
-void EventLoop::addFdEvent(int fd, EventType type,
-			   const std::function<void()> &callback)
-{
-	std::unique_ptr<Event> event = std::make_unique<Event>(callback);
-	short events = (type & Read ? EV_READ : 0)
-		     | (type & Write ? EV_WRITE : 0)
-		     | EV_PERSIST;
-
-	event->event_ = event_new(base_, fd, events, &EventLoop::Event::dispatch,
-				  event.get());
-	if (!event->event_) {
-		std::cerr << "Failed to create event for fd " << fd << std::endl;
-		return;
-	}
-
-	int ret = event_add(event->event_, nullptr);
-	if (ret < 0) {
-		std::cerr << "Failed to add event for fd " << fd << std::endl;
-		return;
-	}
-
-	events_.push_back(std::move(event));
-}
-
-void EventLoop::addTimerEvent(const std::chrono::microseconds period,
-			      const std::function<void()> &callback)
-{
-	std::unique_ptr<Event> event = std::make_unique<Event>(callback);
-	event->event_ = event_new(base_, -1, EV_PERSIST, &EventLoop::Event::dispatch,
-				  event.get());
-	if (!event->event_) {
-		std::cerr << "Failed to create timer event" << std::endl;
-		return;
-	}
-
-	struct timeval tv;
-	tv.tv_sec = period.count() / 1000000ULL;
-	tv.tv_usec = period.count() % 1000000ULL;
-
-	int ret = event_add(event->event_, &tv);
-	if (ret < 0) {
-		std::cerr << "Failed to add timer event" << std::endl;
-		return;
-	}
-
-	events_.push_back(std::move(event));
-}
-
-void EventLoop::dispatchCallback([[maybe_unused]] evutil_socket_t fd,
-				 [[maybe_unused]] short flags, void *param)
-{
-	EventLoop *loop = static_cast<EventLoop *>(param);
-	loop->dispatchCall();
-}
-
-void EventLoop::dispatchCall()
-{
-	std::function<void()> call;
-
-	{
-		std::unique_lock<std::mutex> locker(lock_);
-		if (calls_.empty())
-			return;
-
-		call = calls_.front();
-		calls_.pop_front();
-	}
-
-	call();
-}
-
-EventLoop::Event::Event(const std::function<void()> &callback)
-	: callback_(callback), event_(nullptr)
-{
-}
-
-EventLoop::Event::~Event()
-{
-	event_del(event_);
-	event_free(event_);
-}
-
-void EventLoop::Event::dispatch([[maybe_unused]] int fd,
-				[[maybe_unused]] short events, void *arg)
-{
-	Event *event = static_cast<Event *>(arg);
-	event->callback_();
-}