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

A mobile terminal and screen capture technology, applied in the field of mobile phone interconnection, can solve the problems of low transmission frame rate, low efficiency of screen capture methods, and unsmooth pictures, so as to improve the frame rate of screenshots, solve the problem of unsmooth projection screens, and improve the efficiency of screenshots Effect

Active Publication Date: 2019-05-31
WUHAN CARBIT INFORMATION CO LTD
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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. The

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

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[0025] OpenGL (Open Graphics Library) refers to a professional graphics program interface that defines a cross-programming language, cross-platform programming interface specification. OpenGL is a powerful and easy-to-call underlying graphics library. It is the most widely accepted 2D / 3D graphics API (Application Program Interface) in the industry.

[0026] Generally, the screen image of a mobile terminal contains two forms of rendering content, one is content rendered by OpenGL, and the other is ordinary image content except OpenGL.

[0027] The invention is a screen shot splicing and projection method based on an iOS mobile terminal, which adopts different screen capture methods for OpenGL-rendered screen content and non-OpenGL-rendered screen content, which can effectively improve the screenshot efficiency. The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0028] See figure 1 , A screen shot splicing proje...

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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...

Claims

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Application Information

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IPC IPC(8): G06T3/40G06F9/451
Inventor 王珍泰卢超
Owner WUHAN CARBIT INFORMATION CO LTD
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