CN111124529A - Video screen projection method based on PPAPI (Peer-to-Peer display and Peer display) plug-in technology of browser - Google Patents
Video screen projection method based on PPAPI (Peer-to-Peer display and Peer display) plug-in technology of browser Download PDFInfo
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- CN111124529A CN111124529A CN201911147197.0A CN201911147197A CN111124529A CN 111124529 A CN111124529 A CN 111124529A CN 201911147197 A CN201911147197 A CN 201911147197A CN 111124529 A CN111124529 A CN 111124529A
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- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000006870 function Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009877 rendering Methods 0.000 abstract description 2
- 235000002566 Capsicum Nutrition 0.000 description 1
- 239000006002 Pepper Substances 0.000 description 1
- 235000016761 Piper aduncum Nutrition 0.000 description 1
- 235000017804 Piper guineense Nutrition 0.000 description 1
- 244000203593 Piper nigrum Species 0.000 description 1
- 235000008184 Piper nigrum Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44521—Dynamic linking or loading; Link editing at or after load time, e.g. Java class loading
- G06F9/44526—Plug-ins; Add-ons
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/958—Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
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Abstract
The invention discloses a video screen projection method based on a PPAPPI plug-in technology of a browser. The method specifically comprises the following steps: (1) developing a PPAPI plug-in with the function of reading and displaying image frames from a shared memory; (2) registering the plug-in a kernel of a browser embedded in a lesson courseware of a teacher; (3) the plug-in is loaded and displayed in a proper place by a courseware HTML webpage; (4) the native APP continuously writes the image frames of the local image video into the shared memory; (5) the courseware HTML web page successfully displays the local image video projected by the native APP within the plug-in area. The invention has the beneficial effects that: the PPPI plug-in is used for rendering the image output by the native APP to the HTML page, the HTML technology is used for development in the design, the design is more convenient, stable and easy to maintain, and the courseware layout is more flexible.
Description
Technical Field
The invention relates to the technical field related to video processing, in particular to a video screen projection method based on a PPAPPI plug-in technology of a browser.
Background
The teacher teaching video can not be fused with the courseware page, the courseware page is independently loaded by the teaching tool, and the video is developed and displayed by the native technology. Due to the design, courseware and videos cannot be fused, different technologies are required to be mixed and developed, the complexity of the system is increased, and courseware layout is not flexible.
Disclosure of Invention
The invention provides a video screen projection method based on PPAPI (Peer-to-Peer display and Peer display plug-in) technology, which is flexible in courseware layout and aims to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a video screen projection method based on a PPAPPI plug-in technology of a browser specifically comprises the following steps:
(1) developing a PPAPI plug-in with the function of reading and displaying image frames from a shared memory;
(2) registering the plug-in a kernel of a browser embedded in a lesson courseware of a teacher;
(3) the plug-in is loaded and displayed in a proper place by a courseware HTML webpage;
(4) the native APP continuously writes the image frames of the local image video into the shared memory;
(5) the courseware HTML web page successfully displays the local image video projected by the native APP within the plug-in area.
According to the method, the PPAPI plug-in technology of the browser is used, the PPAPI plug-in can be loaded by an HTML page, the plug-in is developed by using a native technology, and the shared memory can be read, so that a picture of a native APP output to the shared memory is displayed on the HTML page, namely, an image output by the native APP is rendered on the HTML page by using the PPAPI plug-in, and the design is developed by using the HTML technology, so that the method is more convenient, more stable and easier to maintain, and the courseware layout is more flexible.
Preferably, in step (1), the PPAPI is a browser plug-in technology standard, and allows a third party to develop a plug-in for a browser, and the third party develops a plug-in dynamic library according to the standard, and can use the plug-in an HTML webpage after registering in the browser.
Preferably, the shared memory is a mechanism provided by windows for transmitting data in a cross-process manner, and a courseware HTML webpage, a PPAPPI plug-in and a native APP can be accessed at the same time; the native APP is a non-HTML page, and the native APP can directly run without being loaded by a third party such as a browser; the PPAPPI plug-in reads the image frame of the local image video from the shared memory, the local image video projected by the original APP is successfully displayed on the courseware HTML webpage in the PPAPPI plug-in area, and the local image video becomes a part of the courseware HTML webpage and can be displayed under the control of HTML language.
The invention has the beneficial effects that: the PPPI plug-in is used for rendering the image output by the native APP to the HTML page, the HTML technology is used for development in the design, the design is more convenient, stable and easy to maintain, and the courseware layout is more flexible.
Drawings
FIG. 1 is a block diagram of the method of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
In the embodiment shown in fig. 1, a video screen projection method based on a PPAPI plug-in technology of a browser specifically includes the following steps:
(1) developing a PPAPI plug-in with the function of reading and displaying image frames from a shared memory;
(2) registering the plug-in a kernel of a browser embedded in a lesson courseware of a teacher;
(3) the plug-in is loaded and displayed in a proper place by a courseware HTML webpage;
(4) the native APP continuously writes the image frames of the local image video into the shared memory;
(5) the courseware HTML web page successfully displays the local image video projected by the native APP within the plug-in area.
The PPAPI, namely the Pepper plug API is a browser plug-in technical standard, a third party is allowed to develop a plug-in for a browser, the third party develops a plug-in dynamic library according to the standard, and the plug-in can be used in an HTML webpage after being registered in the browser. The shared memory is a mechanism for cross-process data transmission provided by windows, and can enable a courseware HTML webpage, a PPAPI plug-in and a native APP to access simultaneously; the native APP is a non-HTML page, and the native APP can directly run without being loaded by a third party such as a browser; the PPAPPI plug-in reads the image frame of the local image video from the shared memory, the local image video projected by the original APP is successfully displayed on the courseware HTML webpage in the PPAPPI plug-in area, and the local image video becomes a part of the courseware HTML webpage and can be displayed under the control of HTML language.
According to the method, the PPAPI plug-in technology of the browser is used, the PPAPI plug-in can be loaded by an HTML page, the plug-in is developed by using a native technology, and the shared memory can be read, so that a picture of a native APP output to the shared memory is displayed on the HTML page, namely, an image output by the native APP is rendered on the HTML page by using the PPAPI plug-in, and the design is developed by using the HTML technology, so that the method is more convenient, more stable and easier to maintain, and the courseware layout is more flexible.
Claims (3)
1. A video screen projection method based on a PPAPPI plug-in technology of a browser is characterized by comprising the following steps:
(1) developing a PPAPI plug-in with the function of reading and displaying image frames from a shared memory;
(2) registering the plug-in a kernel of a browser embedded in a lesson courseware of a teacher;
(3) the plug-in is loaded and displayed in a proper place by a courseware HTML webpage;
(4) the native APP continuously writes the image frames of the local image video into the shared memory;
(5) the courseware HTML web page successfully displays the local image video projected by the native APP within the plug-in area.
2. The method for video screen projection based on PPAPI (Peer-to-Peer display) plug-in technology of browser as claimed in claim 1, wherein in step (1), PPAPI is a browser plug-in technology standard, allowing a third party to develop plug-in for the browser, the third party develops a plug-in dynamic library according to the standard, and the plug-in can be used in HTML webpage after being registered in the browser.
3. The video screen projection method based on the PPAPI plug-in technology of the browser as claimed in claim 1, wherein the shared memory is a cross-process data transmission mechanism provided by windows, and courseware HTML web pages, PPAPI plug-ins and native APPs can be accessed simultaneously; the native APP is a non-HTML page, and the native APP can directly run without being loaded by a third party such as a browser; the PPAPPI plug-in reads the image frame of the local image video from the shared memory, the local image video projected by the original APP is successfully displayed on the courseware HTML webpage in the PPAPPI plug-in area, and the local image video becomes a part of the courseware HTML webpage and can be displayed under the control of HTML language.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147197.0A CN111124529A (en) | 2019-11-21 | 2019-11-21 | Video screen projection method based on PPAPI (Peer-to-Peer display and Peer display) plug-in technology of browser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911147197.0A CN111124529A (en) | 2019-11-21 | 2019-11-21 | Video screen projection method based on PPAPI (Peer-to-Peer display and Peer display) plug-in technology of browser |
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| Publication Number | Publication Date |
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| CN111124529A true CN111124529A (en) | 2020-05-08 |
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| CN201911147197.0A Pending CN111124529A (en) | 2019-11-21 | 2019-11-21 | Video screen projection method based on PPAPI (Peer-to-Peer display and Peer display) plug-in technology of browser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112328941A (en) * | 2020-11-19 | 2021-02-05 | Oppo广东移动通信有限公司 | Application screen projection method based on browser and related device |
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| CN102665137A (en) * | 2012-04-01 | 2012-09-12 | 深圳Tcl新技术有限公司 | Method for controlling media player and terminal thereof |
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| CN106681764A (en) * | 2016-12-23 | 2017-05-17 | 昆明联诚科技股份有限公司 | Windowless webpage player plug-in device |
| CN109889875A (en) * | 2019-01-23 | 2019-06-14 | 北京奇艺世纪科技有限公司 | Communication means, device, terminal device and computer-readable medium |
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2019
- 2019-11-21 CN CN201911147197.0A patent/CN111124529A/en active Pending
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| US20070083527A1 (en) * | 2005-10-07 | 2007-04-12 | David Wadler | Systems and methods for uploading and downloading files in a distributed network |
| CN102625182A (en) * | 2012-03-31 | 2012-08-01 | 百视通网络电视技术发展有限责任公司 | Method and system for integrating and controlling video player in Connected TV |
| CN102665137A (en) * | 2012-04-01 | 2012-09-12 | 深圳Tcl新技术有限公司 | Method for controlling media player and terminal thereof |
| US20150370759A1 (en) * | 2013-04-22 | 2015-12-24 | Tencent Technology (Shenzhen) Company Limited | Method and apparatus for displaying multimedia content in browser |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112328941A (en) * | 2020-11-19 | 2021-02-05 | Oppo广东移动通信有限公司 | Application screen projection method based on browser and related device |
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Application publication date: 20200508 |