The invention discloses a screenshot splicing projection method based on an iOS mobile terminal

Abstract

The invention discloses a screenshot splicing projection method based on an iOS mobile terminal. The method comprises the steps that S100, an OpenGL control in a current page is recognized, and the OpenGL control currently displayed on a mobile terminal screen is judged in real time through lifecycle management of a UI controller class ViewControl of an iOS system; S200, performing screenshot in anon-OpenGL mode on the current whole page to obtain a full-screen image A; S300, whether an OpenGL control exists in the current page or not is judged, and if yes, the step S400 is executed; If not,directly entering the step S600; S400, performing OpenGL mode screenshot on the OpenGL control to obtain a picture B; S500, the spliced picture A and the spliced picture B are combined, a drawInRect interface of an iOS system is called, and the full-screen picture A and the full-screen picture B are drawn and combined into a complete image; S600 image display. According to the method, different screen capture methods are adopted for the picture content rendered by the OpenGL and the picture content rendered by the non-OpenGL, and the screen capture efficiency can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of mobile phone interconnection, in particular to an iOS mobile terminal-based screen capture splicing and projection method. Background technique [0002] With the development of the Internet of Vehicles industry, mobile phone interconnection is becoming a low-cost and high-efficiency Internet of Vehicles solution. Among them, the mobile phone screen mapping solution is the most widely used. Screen mapping refers to a technology that projects the screen content of the mobile phone to the screen of the car navigator, so that the functions that originally run on the screen of the mobile phone are displayed on the screen of the car navigator. The functions frequently used in the car environment such as navigation and music can be presented in the car navigator. The advantage is that it not only effectively uses the characteristics of the car navigator with a large screen and good sound effects, but also combin...

AI Technical Summary

Problems solved by technology

[0003] After the iOS system was upgraded to 12.0, the efficiency of the screen capture method that comes with the system has become very low. It takes about 100~500 milliseconds to capture a picture , that is, a maximum of 2~10 pictures can be intercepted per second. Therefore, during the screen mapping process, the frame rate of the projected picture does not exceed 10FPS. Considering the impact of network transmission and video codec on system resources, the actual transmission frame rate will be lower. , resulting in unsmooth picture

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