/* 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 androidScalerCode; }; 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__ */