/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2020, Google Inc. * * file.cpp - File I/O operations tests */ #include #include #include #include #include #include #include #include "libcamera/internal/file.h" #include "test.h" using namespace std; using namespace libcamera; class FileTest : public Test { protected: int init() { fileName_ = "/tmp/libcamera.test.XXXXXX"; int fd = mkstemp(&fileName_.front()); if (fd == -1) return TestFail; close(fd); unlink(fileName_.c_str()); return TestPass; } int run() { /* Test static functions. */ if (!File::exists("/dev/null")) { cerr << "Valid file not found" << endl; return TestFail; } if (File::exists("/dev/null/invalid")) { cerr << "Invalid file should not exist" << endl; return TestFail; } /* Test unnamed file. */ File file; if (!file.fileName().empty()) { cerr << "Unnamed file has non-empty file name" << endl; return TestFail; } if (file.exists()) { cerr << "Unnamed file exists" << endl; return TestFail; } if (file.isOpen()) { cerr << "File is open after construction" << endl; return TestFail; } if (file.openMode() != File::NotOpen) { cerr << "File has invalid open mode after construction" << endl; return TestFail; } if (file.size() >= 0) { cerr << "Unnamed file has a size" << endl; return TestFail; } if (file.open(File::ReadWrite)) { cerr << "Opening unnamed file succeeded" << endl; return TestFail; } if (file.error() == 0) { cerr << "Open failure didn't set error" << endl; return TestFail; } /* Test named file referring to an invalid file. */ file.setFileName("/dev/null/invalid"); if (file.fileName() != "/dev/null/invalid") { cerr << "File reports incorrect file name" << endl; return TestFail; } if (file.exists()) { cerr << "Invalid file exists" << endl; return TestFail; } if (file.isOpen()) { cerr << "Invalid file is open after construction" << endl; return TestFail; } if (file.openMode() != File::NotOpen) { cerr << "Invalid file has invalid open mode after construction" << endl; return TestFail; } if (file.size() >= 0) { cerr << "Invalid file has a size" << endl; return TestFail; } if (file.open(File::ReadWrite)) { cerr << "Opening invalid file succeeded" << endl; return TestFail; } /* Test named file referring to a valid file. */ file.setFileName("/dev/null"); if (!file.exists()) { cerr << "Valid file does not exist" << endl; return TestFail; } if (file.isOpen()) { cerr << "Valid file is open after construction" << endl; return TestFail; } if (file.openMode() != File::NotOpen) { cerr << "Valid file has invalid open mode after construction" << endl; return TestFail; } if (file.size() >= 0) { cerr << "Invalid file has a size" << endl; return TestFail; } /* Test open and close. */ if (!file.open(File::ReadWrite)) { cerr << "Opening file failed" << endl; return TestFail; } if (!file.isOpen()) { cerr << "Open file reported as closed" << endl; return TestFail; } if (file.openMode() != File::ReadWrite) { cerr << "Open file has invalid open mode" << endl; return TestFail; } file.close(); if (file.isOpen()) { cerr << "Closed file reported as open" << endl; return TestFail; } if (file.openMode() != File::NotOpen) { cerr << "Closed file has invalid open mode" << endl; return TestFail; } /* Test size(). */ file.setFileName("/proc/self/exe"); if (file.size() >= 0) { cerr << "File has valid size before open" << endl; return TestFail; } file.open(File::ReadOnly); ssize_t size = file.size(); if (size <= 0) { cerr << "File has invalid size after open" << endl; return TestFail; } file.close(); /* Test file creation. */ file.setFileName(fileName_); if (file.exists()) { cerr << "Temporary file already exists" << endl; return TestFail; } if (file.open(File::ReadOnly)) { cerr << "Read-only open succeeded on nonexistent file" << endl; return TestFail; } if (!file.open(File::WriteOnly)) { cerr << "Write-only open failed on nonexistent file" << endl; return TestFail; } if (!file.exists()) { cerr << "Write-only open failed to create file" << endl; return TestFail; } file.close(); /* Test read and write. */ std::array buffer = { 0 }; strncpy(reinterpret_cast(buffer.data()), "libcamera", buffer.size()); if (file.read(buffer) >= 0) { cerr << "Read succeeded on closed file" << endl; return TestFail; } if (file.write(buffer) >= 0) { cerr << "Write succeeded on closed file" << endl; return TestFail; } file.open(File::ReadOnly); if (file.write(buffer) >= 0) { cerr << "Write succeeded on read-only file" << endl; return TestFail; } file.close(); file.open(File::ReadWrite); if (file.write({ buffer.data(), 9 }) != 9) { cerr << "Write test failed" << endl; return TestFail; } if (file.read(buffer) != 0) { cerr << "Read at end of file test failed" << endl; return TestFail; } if (file.seek(0) != 0) { cerr << "Seek test failed" << endl; return TestFail; } if (file.read(buffer) != 9) { cerr << "Read test failed" << endl; return TestFail; } if (file.pos() != 9) { cerr << "Position test failed" << endl; return TestFail; } file.close(); /* Test mapping and unmapping. */ file.setFileName("/proc/self/exe"); file.open(File::ReadOnly); Span data = file.map(); if (data.empty()) { cerr << "Mapping of complete file failed" << endl; return TestFail; } if (data.size() != static_cast(size)) { cerr << "Mapping of complete file has invalid size" << endl; return TestFail; } if (!file.unmap(data.data())) { cerr << "Unmapping of complete file failed" << endl; return TestFail; } data = file.map(4096, 8192); if (data.empty()) { cerr << "Mapping of file region failed" << endl; return TestFail; } if (data.size() != 8192) { cerr << "Mapping of file region has invalid size" << endl; return TestFail; } if (!file.unmap(data.data())) { cerr << "Unmapping of file region failed" << endl; return TestFail; } file.close(); /* Test private mapping. */ file.setFileName(fileName_); file.open(File::ReadWrite); data = file.map(0, -1, File::MapPrivate); if (data.empty()) { cerr << "Private mapping failed" << endl; return TestFail; } std::string str{ reinterpret_cast(data.data()), data.size() }; if (str != "libcamera") { cerr << "Invalid contents of private mapping" << endl; return TestFail; } memcpy(data.data(), "LIBCAMERA", 9); if (!file.unmap(data.data())) { cerr << "Private unmapping failed" << endl; return TestFail; } data = file.map(); str = { reinterpret_cast(data.data()), data.size() }; if (str != "libcamera") { cerr << "Private mapping changed file contents" << endl; return TestFail; } /* Test shared mapping. */ data = file.map(); if (data.empty()) { cerr << "Shared mapping failed" << endl; return TestFail; } memcpy(data.data(), "LIBCAMERA", 9); if (!file.unmap(data.data())) { cerr << "Shared unmapping failed" << endl; return TestFail; } data = file.map(); str = { reinterpret_cast(data.data()), data.size() }; if (str != "LIBCAMERA") { cerr << "Shared mapping failed to change file contents" << endl; return TestFail; } return TestPass; } void cleanup() { unlink(fileName_.c_str()); } private: std::string fileName_; }; TEST_REGISTER(FileTest) 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134

/* 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/buffer.h"
#include "libcamera/internal/log.h"
#include "libcamera/internal/message.h"

#include "camera_stream.h"
#include "camera_worker.h"
#include "jpeg/encoder.h"

class CameraMetadata;

class MappedCamera3Buffer : public libcamera::MappedBuffer
{
public:
	MappedCamera3Buffer(const buffer_handle_t camera3buffer, int flags);
};

class CameraDevice : protected libcamera::Loggable
{
public:
	static std::shared_ptr<CameraDevice> create(unsigned int id,
						    const std::shared_ptr<libcamera::Camera> &cam);
	~CameraDevice();

	int initialize();

	int open(const hw_module_t *hardwareModule);
	void close();

	unsigned int id() const { return id_; }
	camera3_device_t *camera3Device() { return &camera3Device_; }
	std::shared_ptr<libcamera::Camera> camera() const { return camera_; }
	libcamera::CameraConfiguration *cameraConfiguration() const
	{
		return config_.get();
	}

	int facing() const { return facing_; }
	int orientation() const { return orientation_; }
	unsigned int maxJpegBufferSize() const { return maxJpegBufferSize_; }

	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:
	CameraDevice(unsigned int id, const std::shared_ptr<libcamera::Camera> &camera);

	struct Camera3RequestDescriptor {
		Camera3RequestDescriptor(libcamera::Camera *camera,
					 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_;
		std::unique_ptr<CaptureRequest> request_;
	};

	struct Camera3StreamConfiguration {
		libcamera::Size resolution;
		int androidFormat;
	};

	int initializeStreamConfigurations();
	std::vector<libcamera::Size>
	getYUVResolutions(libcamera::CameraConfiguration *cameraConfig,
			  const libcamera::PixelFormat &pixelFormat,
			  const std::vector<libcamera::Size> &resolutions);
	std::vector<libcamera::Size>
	getRawResolutions(const libcamera::PixelFormat &pixelFormat);

	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);
	CameraMetadata *requestTemplatePreview();
	libcamera::PixelFormat toPixelFormat(int format) const;
	std::unique_ptr<CameraMetadata> getResultMetadata(
		Camera3RequestDescriptor *descriptor, int64_t timestamp);

	unsigned int id_;
	camera3_device_t camera3Device_;

	CameraWorker worker_;

	bool running_;
	std::shared_ptr<libcamera::Camera> camera_;
	std::unique_ptr<libcamera::CameraConfiguration> config_;

	CameraMetadata *staticMetadata_;
	std::map<unsigned int, const 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_;

	unsigned int maxJpegBufferSize_;
};

#endif /* __ANDROID_CAMERA_DEVICE_H__ */