Method, system and smart device for quickly starting camera preview by smart device

Abstract

The invention relates to a method and a system for quickly starting the camera previewing of intelligent equipment and the intelligent equipment. The method at least comprises an application window creation step, a previewing data acquisition step and an application window previewing step, and also comprises: steps of a local window creation step that a camera service layer transmits a local window creation instruction to a display system after receiving a camera connection instruction, and receives a local window handle from the display system; and a local window previewing step that the camera service layer calls a created local window to display acquired previewing data after detecting that the local window handle is acquired. The camera service layer directly interacts with the display system to establish the local window for previewing in an early stage before an application window is created for previewing, and the local window is smoothly switched to the application window for display when an application window handle created by a camera application layer is acquired, so that frequent interaction during starting is avoided, and the aim of quick and stable display previewing is fulfilled.

Description

technical field [0001] The present invention relates to the technical field of smart devices, and more specifically, relates to a method, a system and a smart device for quickly starting a camera preview on a smart device. Background technique [0002] Most of the current smart devices have a camera function. Most camera modules on smart devices designed with layered software architecture adopt C / S (client / server) mode in software implementation, and camera applications and services run in different processes. Such a system provides a conventional process to operate the camera hardware and the display system. When starting, the camera service layer generally needs to bridge the camera application layer to interact with the display system. [0003] Please refer to figure 1 and 2 , which is a flowchart of a method for starting a camera preview by a smart device in the prior art and a schematic diagram of the process. like figure 1 and figure 2 As shown, the camera appli...

AI Technical Summary

Problems solved by technology

The acquisition of the application window handle must apply to the display system, so the back and forth interaction between the camera application layer and the camera service layer is delayed for a long time, resulting in a slow preview display

It takes a certain amount of time for the camera application layer to create an application window, and the time is not stable, so the startup time fluctuates, and even a short black screen on the display and other bad user experience

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