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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* camera_device.h - libcamera Android Camera Device
*/
#pragma once
#include <map>
#include <memory>
#include <queue>
#include <vector>
#include <hardware/camera3.h>
#include <libcamera/base/class.h>
#include <libcamera/base/log.h>
#include <libcamera/base/message.h>
#include <libcamera/base/mutex.h>
#include <libcamera/camera.h>
#include <libcamera/framebuffer.h>
#include <libcamera/geometry.h>
#include <libcamera/pixel_format.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>
#include "camera_capabilities.h"
#include "camera_metadata.h"
#include "camera_stream.h"
#include "jpeg/encoder.h"
class Camera3RequestDescriptor;
struct CameraConfigData;
class CameraDevice : protected libcamera::Loggable
{
public:
static std::unique_ptr<CameraDevice> create(unsigned int id,
std::shared_ptr<libcamera::Camera> cam);
~CameraDevice();
int initialize(const CameraConfigData *cameraConfigData);
int open(const hw_module_t *hardwareModule);
void close();
void flush();
unsigned int id() const { return id_; }
camera3_device_t *camera3Device() { return &camera3Device_; }
const CameraCapabilities *capabilities() const { return &capabilities_; }
const std::shared_ptr<libcamera::Camera> &camera() const { return camera_; }
const std::string &maker() const { return maker_; }
const std::string &model() const { return model_; }
int facing() const { return facing_; }
int orientation() const { return orientation_; }
unsigned int maxJpegBufferSize() const;
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);
void streamProcessingComplete(Camera3RequestDescriptor::StreamBuffer *bufferStream,
Camera3RequestDescriptor::Status status);
protected:
std::string logPrefix() const override;
private:
LIBCAMERA_DISABLE_COPY_AND_MOVE(CameraDevice)
CameraDevice(unsigned int id, std::shared_ptr<libcamera::Camera> camera);
enum class State {
Stopped,
Flushing,
Running,
};
void stop() LIBCAMERA_TSA_EXCLUDES(stateMutex_);
std::unique_ptr<libcamera::FrameBuffer>
createFrameBuffer(const buffer_handle_t camera3buffer,
libcamera::PixelFormat pixelFormat,
const libcamera::Size &size);
void abortRequest(Camera3RequestDescriptor *descriptor) const;
bool isValidRequest(camera3_capture_request_t *request) const;
void notifyShutter(uint32_t frameNumber, uint64_t timestamp);
void notifyError(uint32_t frameNumber, camera3_stream_t *stream,
camera3_error_msg_code code) const;
int processControls(Camera3RequestDescriptor *descriptor);
void completeDescriptor(Camera3RequestDescriptor *descriptor)
LIBCAMERA_TSA_EXCLUDES(descriptorsMutex_);
void sendCaptureResults() LIBCAMERA_TSA_REQUIRES(descriptorsMutex_);
void setBufferStatus(Camera3RequestDescriptor::StreamBuffer &buffer,
Camera3RequestDescriptor::Status status);
std::unique_ptr<CameraMetadata> getResultMetadata(
const Camera3RequestDescriptor &descriptor) const;
unsigned int id_;
camera3_device_t camera3Device_;
libcamera::Mutex stateMutex_; /* Protects access to the camera state. */
State state_ LIBCAMERA_TSA_GUARDED_BY(stateMutex_);
std::shared_ptr<libcamera::Camera> camera_;
std::unique_ptr<libcamera::CameraConfiguration> config_;
CameraCapabilities capabilities_;
std::map<unsigned int, std::unique_ptr<CameraMetadata>> requestTemplates_;
const camera3_callback_ops_t *callbacks_;
std::vector<CameraStream> streams_;
libcamera::Mutex descriptorsMutex_ LIBCAMERA_TSA_ACQUIRED_AFTER(stateMutex_);
std::queue<std::unique_ptr<Camera3RequestDescriptor>> descriptors_
LIBCAMERA_TSA_GUARDED_BY(descriptorsMutex_);
std::string maker_;
std::string model_;
int facing_;
int orientation_;
CameraMetadata lastSettings_;
};
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