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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* camera_device.h - libcamera Android Camera Device
*/
#ifndef __ANDROID_CAMERA_DEVICE_H__
#define __ANDROID_CAMERA_DEVICE_H__
#include <map>
#include <memory>
#include <tuple>
#include <vector>
#include <hardware/camera3.h>
#include <libcamera/buffer.h>
#include <libcamera/camera.h>
#include <libcamera/geometry.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>
#include "libcamera/internal/log.h"
#include "libcamera/internal/message.h"
class CameraMetadata;
struct CameraStream {
/*
* The index of the libcamera StreamConfiguration as added during
* configureStreams(). A single libcamera Stream may be used to deliver
* one or more streams to the Android framework.
*/
unsigned int index;
};
class CameraDevice : protected libcamera::Loggable
{
public:
CameraDevice(unsigned int id, const std::shared_ptr<libcamera::Camera> &camera);
~CameraDevice();
int initialize();
int open(const hw_module_t *hardwareModule);
void close();
unsigned int id() const { return id_; }
camera3_device_t *camera3Device() { return &camera3Device_; }
int facing() const { return facing_; }
int orientation() const { return orientation_; }
void setCallbacks(const camera3_callback_ops_t *callbacks);
const camera_metadata_t *getStaticMetadata();
const camera_metadata_t *constructDefaultRequestSettings(int type);
int configureStreams(camera3_stream_configuration_t *stream_list);
int processCaptureRequest(camera3_capture_request_t *request);
void requestComplete(libcamera::Request *request);
protected:
std::string logPrefix() const override;
private:
struct Camera3RequestDescriptor {
Camera3RequestDescriptor(unsigned int frameNumber,
unsigned int numBuffers);
~Camera3RequestDescriptor();
uint32_t frameNumber;
uint32_t numBuffers;
camera3_stream_buffer_t *buffers;
std::vector<std::unique_ptr<libcamera::FrameBuffer>> frameBuffers;
};
struct Camera3StreamConfiguration {
libcamera::Size resolution;
int androidFormat;
};
int initializeStreamConfigurations();
std::tuple<uint32_t, uint32_t> calculateStaticMetadataSize();
libcamera::FrameBuffer *createFrameBuffer(const buffer_handle_t camera3buffer);
void notifyShutter(uint32_t frameNumber, uint64_t timestamp);
void notifyError(uint32_t frameNumber, camera3_stream_t *stream);
libcamera::PixelFormat toPixelFormat(int format);
std::unique_ptr<CameraMetadata> getResultMetadata(int frame_number,
int64_t timestamp);
unsigned int id_;
camera3_device_t camera3Device_;
bool running_;
std::shared_ptr<libcamera::Camera> camera_;
std::unique_ptr<libcamera::CameraConfiguration> config_;
CameraMetadata *staticMetadata_;
std::map<unsigned int, CameraMetadata *> requestTemplates_;
const camera3_callback_ops_t *callbacks_;
std::vector<Camera3StreamConfiguration> streamConfigurations_;
std::map<int, libcamera::PixelFormat> formatsMap_;
std::vector<CameraStream> streams_;
int facing_;
int orientation_;
};
#endif /* __ANDROID_CAMERA_DEVICE_H__ */
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