hal_class

handler##Factory

+ createInstance(params):V4l2AdapterInterface*重写

HosV4L2Dev

v4l2Handle_：V4l2AdapterInterface*

 open()ioctl()mmap()munmap()poll()close()

V4l2AdapterInterface

+ name_:const char *

 open(params) = 0 ioctl(params) = 0 mmap() =0munmap(params) = 0 poll(params) = 0 close() =0write_i2c_t() read_i2c() 

继承

UnisocV4l2AdapterImpl

+ name_:string

v4l2camera_load_lib()v4l2camera_init()callback_malloc()v4l2camera_cb()callback_free()iommu_is_enabled()get_preview_buffer_id_for_fd()HandleStartPreview()callback_preview_malloc()

组合

V4l2Client

create(params):V4l2AdapterInterface*:创建接口类V4l2AdapterregisterType(params)name()createInstance：:V4l2AdapterInterface*

继承

UnisocV4l2Adapter

+ oem_dev:oem_module_t+ device:std::list<device_info>- camera_num:int

+ sensorGetPhysicalSnsNum(params):- v4l2camera_load_lib(params)- open()ioctl()mmap()munmap()poll()close()write_i2c_t()read_i2c()getAdapterImpl

V4l2Adapter

 open()ioctl()mmap()munmap()poll()close()

1.REGISTER_V4L2_HANDLER(UnisocV4l2Adapter);2.生成模块静态对象，初始化V4l2Client父类3. 在构造函数中复制V4l2Client定义全局指针变量。

OEM_MODULE_INFO_SYM

+ tag: uint32_tops: oem_ops_t  //oem 入口结构体dso: void*   //oem haldle

device_info结构体

void *start;    int fd;    UnisocV4l2AdapterImpl *AdapterImpl;