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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * main_window.h - qcam - Main application window
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include <libcamera/camera.h>
+#include <libcamera/camera_manager.h>
+#include <libcamera/controls.h>
+#include <libcamera/framebuffer.h>
+#include <libcamera/framebuffer_allocator.h>
+#include <libcamera/request.h>
+#include <libcamera/stream.h>
+
+#include <QElapsedTimer>
+#include <QIcon>
+#include <QMainWindow>
+#include <QMutex>
+#include <QObject>
+#include <QPushButton>
+#include <QQueue>
+#include <QTimer>
+
+#include "../cam/stream_options.h"
+
+#include "viewfinder.h"
+
+class QAction;
+
+class CameraSelectorDialog;
+class Image;
+class HotplugEvent;
+
+enum {
+ OptCamera = 'c',
+ OptHelp = 'h',
+ OptRenderer = 'r',
+ OptStream = 's',
+ OptVerbose = 'v',
+};
+
+class MainWindow : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ MainWindow(libcamera::CameraManager *cm,
+ const OptionsParser::Options &options);
+ ~MainWindow();
+
+ bool event(QEvent *e) override;
+
+private Q_SLOTS:
+ void quit();
+ void updateTitle();
+
+ void switchCamera();
+ void toggleCapture(bool start);
+
+ void saveImageAs();
+ void captureRaw();
+ void processRaw(libcamera::FrameBuffer *buffer,
+ const libcamera::ControlList &metadata);
+
+ void renderComplete(libcamera::FrameBuffer *buffer);
+
+private:
+ int createToolbars();
+
+ std::string chooseCamera();
+ int openCamera();
+
+ int startCapture();
+ void stopCapture();
+
+ void addCamera(std::shared_ptr<libcamera::Camera> camera);
+ void removeCamera(std::shared_ptr<libcamera::Camera> camera);
+
+ int queueRequest(libcamera::Request *request);
+ void requestComplete(libcamera::Request *request);
+ void processCapture();
+ void processHotplug(HotplugEvent *e);
+ void processViewfinder(libcamera::FrameBuffer *buffer);
+
+ /* UI elements */
+ QToolBar *toolbar_;
+ QAction *startStopAction_;
+ QPushButton *cameraSelectButton_;
+ QAction *saveRaw_;
+ ViewFinder *viewfinder_;
+
+ QIcon iconPlay_;
+ QIcon iconStop_;
+
+ QString title_;
+ QTimer titleTimer_;
+
+ CameraSelectorDialog *cameraSelectorDialog_;
+
+ /* Options */
+ const OptionsParser::Options &options_;
+
+ /* Camera manager, camera, configuration and buffers */
+ libcamera::CameraManager *cm_;
+ std::shared_ptr<libcamera::Camera> camera_;
+ libcamera::FrameBufferAllocator *allocator_;
+
+ std::unique_ptr<libcamera::CameraConfiguration> config_;
+ std::map<libcamera::FrameBuffer *, std::unique_ptr<Image>> mappedBuffers_;
+
+ /* Capture state, buffers queue and statistics */
+ bool isCapturing_;
+ bool captureRaw_;
+ libcamera::Stream *vfStream_;
+ libcamera::Stream *rawStream_;
+ std::map<const libcamera::Stream *, QQueue<libcamera::FrameBuffer *>> freeBuffers_;
+ QQueue<libcamera::Request *> doneQueue_;
+ QQueue<libcamera::Request *> freeQueue_;
+ QMutex mutex_; /* Protects freeBuffers_, doneQueue_, and freeQueue_ */
+
+ uint64_t lastBufferTime_;
+ QElapsedTimer frameRateInterval_;
+ uint32_t previousFrames_;
+ uint32_t framesCaptured_;
+
+ std::vector<std::unique_ptr<libcamera::Request>> requests_;
+};