/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2019, Google Inc. * * v4l2_camera_proxy.h - Proxy to V4L2 compatibility camera */ #pragma once #include #include #include #include #include #include #include #include #include "v4l2_camera.h" class V4L2CameraFile; class V4L2CameraProxy { public: V4L2CameraProxy(unsigned int index, std::shared_ptr camera); int open(V4L2CameraFile *file) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); void close(V4L2CameraFile *file) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); void *mmap(V4L2CameraFile *file, void *addr, size_t length, int prot, int flags, off64_t offset) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); int munmap(V4L2CameraFile *file, void *addr, size_t length) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); int ioctl(V4L2CameraFile *file, unsigned long request, void *arg) LIBCAMERA_TSA_EXCLUDES(proxyMutex_); private: bool validateBufferType(uint32_t type); bool validateMemoryType(uint32_t memory); void setFmtFromConfig(const libcamera::StreamConfiguration &streamConfig); void querycap(std::shared_ptr camera); int tryFormat(struct v4l2_format *arg); enum v4l2_priority maxPriority(); void updateBuffers(); void freeBuffers(); int vidioc_querycap(V4L2CameraFile *file, struct v4l2_capability *arg); int vidioc_enum_framesizes(V4L2CameraFile *file, struct v4l2_frmsizeenum *arg); int vidioc_enum_fmt(V4L2CameraFile *file, struct v4l2_fmtdesc *arg); int vidioc_g_fmt(V4L2CameraFile *file, struct v4l2_format *arg); int vidioc_s_fmt(V4L2CameraFile *file, struct v4l2_format *arg); int vidioc_try_fmt(V4L2CameraFile *file, struct v4l2_format *arg); int vidioc_g_priority(V4L2CameraFile *file, enum v4l2_priority *arg); int vidioc_s_priority(V4L2CameraFile *file, enum v4l2_priority *arg); int vidioc_enuminput(V4L2CameraFile *file, struct v4l2_input *arg); int vidioc_g_input(V4L2CameraFile *file, int *arg); int vidioc_s_input(V4L2CameraFile *file, int *arg); int vidioc_reqbufs(V4L2CameraFile *file, struct v4l2_requestbuffers *arg); int vidioc_querybuf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_prepare_buf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg, libcamera::Mutex *lock) LIBCAMERA_TSA_REQUIRES(*lock); int vidioc_expbuf(V4L2CameraFile *file, struct v4l2_exportbuffer *arg); int vidioc_streamon(V4L2CameraFile *file, int *arg); int vidioc_streamoff(V4L2CameraFile *file, int *arg); bool hasOwnership(V4L2CameraFile *file); int acquire(V4L2CameraFile *file); void release(V4L2CameraFile *file); static const std::set supportedIoctls_; unsigned int refcount_; unsigned int index_; libcamera::StreamConfiguration streamConfig_; unsigned int bufferCount_; unsigned int currentBuf_; unsigned int sizeimage_; struct v4l2_capability capabilities_; struct v4l2_pix_format v4l2PixFormat_; std::vector buffers_; std::map mmaps_; std::set files_; std::unique_ptr vcam_; /* * This is the exclusive owner of this V4L2CameraProxy instance. * When there is no owner, anybody can call any ioctl before reqbufs. * The first file to call reqbufs with count > 0 or s_fmt will become * the owner, and when the owner calls reqbufs with count = 0 it will * release ownership. Any buffer-related ioctl (except querybuf) or * s_fmt that is called by a non-owner while there exists an owner * will return -EBUSY. */ V4L2CameraFile *owner_; /* This mutex is to serialize access to the proxy. */ libcamera::Mutex proxyMutex_; }; f='#n17'>17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * control_serialization.cpp - Serialize and deserialize controls
 */

#include <iostream>

#include <libcamera/camera.h>
#include <libcamera/control_ids.h>
#include <libcamera/controls.h>

#include "libcamera/internal/byte_stream_buffer.h"
#include "libcamera/internal/control_serializer.h"

#include "serialization_test.h"
#include "test.h"

using namespace std;
using namespace libcamera;

class ControlSerializationTest : public SerializationTest
{
protected:
	int init() override
	{
		return status_;
	}

	int run() override
	{
		ControlSerializer serializer;
		ControlSerializer deserializer;

		std::vector<uint8_t> infoData;
		std::vector<uint8_t> listData;

		size_t size;
		int ret;

		/* Create a control list with three controls. */
		const ControlInfoMap &infoMap = camera_->controls();
		ControlList list(infoMap);

		list.set(controls::Brightness, 0.5f);
		list.set(controls::Contrast, 1.2f);
		list.set(controls::Saturation, 0.2f);

		/*
		 * Serialize the control list, this should fail as the control
		 * info map hasn't been serialized.
		 */
		size = serializer.binarySize(list);
		listData.resize(size);
		ByteStreamBuffer buffer(listData.data(), listData.size());

		ret = serializer.serialize(list, buffer);
		if (!ret) {
			cerr << "List serialization without info map should have failed"
			     << endl;
			return TestFail;
		}

		if (buffer.overflow() || buffer.offset()) {
			cerr << "Failed list serialization modified the buffer"
			     << endl;
			return TestFail;
		}

		/* Serialize the control info map. */
		size = serializer.binarySize(infoMap);
		infoData.resize(size);
		buffer = ByteStreamBuffer(infoData.data(), infoData.size());

		ret = serializer.serialize(infoMap, buffer);
		if (ret < 0) {
			cerr << "Failed to serialize ControlInfoMap" << endl;
			return TestFail;
		}

		if (buffer.overflow()) {
			cerr << "Overflow when serializing ControlInfoMap" << endl;
			return TestFail;
		}

		/* Serialize the control list, this should now succeed. */
		size = serializer.binarySize(list);
		listData.resize(size);
		buffer = ByteStreamBuffer(listData.data(), listData.size());

		ret = serializer.serialize(list, buffer);
		if (ret) {
			cerr << "Failed to serialize ControlList" << endl;
			return TestFail;
		}

		if (buffer.overflow()) {
			cerr << "Overflow when serializing ControlList" << endl;
			return TestFail;
		}

		/*
		 * Deserialize the control list, this should fail as the control
		 * info map hasn't been deserialized.
		 */
		buffer = ByteStreamBuffer(const_cast<const uint8_t *>(listData.data()),
					  listData.size());

		ControlList newList = deserializer.deserialize<ControlList>(buffer);
		if (!newList.empty()) {
			cerr << "List deserialization without info map should have failed"
			     << endl;
			return TestFail;
		}

		if (buffer.overflow()) {
			cerr << "Failed list deserialization modified the buffer"
			     << endl;
			return TestFail;
		}

		/* Deserialize the control info map and verify the contents. */
		buffer = ByteStreamBuffer(const_cast<const uint8_t *>(infoData.data()),
					  infoData.size());

		ControlInfoMap newInfoMap = deserializer.deserialize<ControlInfoMap>(buffer);
		if (newInfoMap.empty()) {
			cerr << "Failed to deserialize ControlInfoMap" << endl;
			return TestFail;
		}

		if (buffer.overflow()) {
			cerr << "Overflow when deserializing ControlInfoMap" << endl;
			return TestFail;
		}

		if (!equals(infoMap, newInfoMap)) {
			cerr << "Deserialized map doesn't match original" << endl;
			return TestFail;
		}

		/* Deserialize the control list and verify the contents. */
		buffer = ByteStreamBuffer(const_cast<const uint8_t *>(listData.data()),
					  listData.size());

		newList = deserializer.deserialize<ControlList>(buffer);
		if (newList.empty()) {
			cerr << "Failed to deserialize ControlList" << endl;
			return TestFail;
		}

		if (buffer.overflow()) {
			cerr << "Overflow when deserializing ControlList" << endl;
			return TestFail;
		}

		if (!equals(list, newList)) {
			cerr << "Deserialized list doesn't match original" << endl;
			return TestFail;
		}

		return TestPass;
	}
};

TEST_REGISTER(ControlSerializationTest)