CN111432070B - Application screen projection control method, device, equipment and medium - Google Patents

Application screen projection control method, device, equipment and medium Download PDF

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Publication number
CN111432070B
CN111432070B CN202010187798.0A CN202010187798A CN111432070B CN 111432070 B CN111432070 B CN 111432070B CN 202010187798 A CN202010187798 A CN 202010187798A CN 111432070 B CN111432070 B CN 111432070B
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China
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screen
application
interface content
target
target application
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CN111432070A (en
Inventor
周星杰
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Apollo Zhilian Beijing Technology Co Ltd
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Apollo Zhilian Beijing Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
    • H04M1/7243—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages
    • H04M1/72439—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality with interactive means for internal management of messages for image or video messaging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Human Computer Interaction (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

The embodiment of the application discloses an application screen projection control method, device, equipment and medium, and relates to a display control technology. Wherein, the method comprises the following steps: determining a target application to be projected; sending interface content of a target application in the running process to a virtual screen in local equipment, and performing display matching processing, wherein the virtual screen is created in advance according to the display attribute of a screen projection object, and the virtual screen is multiplexed by different applications to be projected; acquiring interface content loaded on a virtual screen; and sending the acquired interface content to the screen projection object to be displayed on the screen projection object. According to the method and the device, the foreground running or background running application on the local device can support interface display on other devices, and higher interface display quality can be presented on other devices.

Description

Application screen projection control method, device, equipment and medium
Technical Field
The embodiment of the application relates to a computer technology, in particular to a display control technology, and particularly relates to an application screen projection control method, device, equipment and medium.
Background
At present, more and more application functions are supported in electronic products, and data synchronization between different devices is becoming common. For example, by adopting a screen projection technology, data on the mobile device can be synchronously displayed in other devices in real time, for example, interface content on a user mobile phone is displayed in a vehicle-mounted device connected with the mobile phone.
However, in the current screen projection display scheme, generally, only the application interface running in the foreground can be synchronously displayed in different devices, and if the application is switched to run in the background, the application interface can not be displayed on the corresponding screen projection device.
Disclosure of Invention
The embodiment of the application screen projection control method, device, equipment and medium is used for achieving the effect that applications running in a foreground or a background on local equipment support interface display on other equipment, and meanwhile ensuring higher interface display quality on other equipment.
In a first aspect, an embodiment of the present application discloses an application screen projection control method, including:
determining a target application to be projected;
sending the interface content of the target application in the running process to a virtual screen in local equipment, and performing display matching processing, wherein the virtual screen is created in advance according to the display attribute of a screen projection object, and the virtual screen is multiplexed by different screen applications to be projected;
acquiring interface content loaded on the virtual screen;
and sending the acquired interface content to the screen projection object to be displayed on the screen projection object.
One embodiment in the above application has the following advantages or benefits: the transfer of the application interface content between the local equipment and the screen projection object is realized by utilizing the pre-created virtual screen in the screen projection process of the application, the problem that the application which does not support the background operation in the existing screen projection scheme performs the interface screen projection display between different equipment is solved, the effect of performing the interface display on other equipment is supported by the application which runs in the foreground or the background on the local equipment, and the higher interface display quality can be ensured to be displayed on other equipment.
Optionally, the interface content of the target application in the running process includes: and the target application is applied to the interface contents in the background running process and the foreground running process.
Optionally, after the determining the target application to be projected, the method further includes:
creating a target auxiliary screen for the target application in the native device;
correspondingly, the interface content of the target application in the running process is sent to a virtual screen in the native device, and the method comprises the following steps:
sending the interface content of the target application in the running process to the target auxiliary screen;
and if the interface content of the prior screen-casting application is not borne on the virtual screen, sending the interface content on the target auxiliary screen to the virtual screen.
One embodiment in the above application has the following advantages or benefits: aiming at different screen applications to be projected, the local equipment can create auxiliary screens for the applications so as to cache the interface contents of the applications in the operation process, and meanwhile, when a plurality of screen applications to be projected exist, screen projection display can be executed in order, the screen projection display efficiency is improved, and the screen projection display error probability is reduced.
Optionally, the sending the interface content of the target application in the running process to a virtual screen in the native device further includes:
if the fact that the interface content of the prior screen-casting application is loaded on the virtual screen is confirmed, screen-casting termination information is sent to the prior screen-casting application to prompt the prior screen-casting application to release the use of the virtual screen;
and if the fact that the using state of the virtual screen is released is monitored, the interface content on the target auxiliary screen is sent to the virtual screen.
One embodiment in the above application has the following advantages or benefits: aiming at the switching of the screen-projecting application, screen-projecting termination information is sent to the prior screen-projecting application, and the using state of the virtual screen is monitored, so that on one hand, the smooth realization of the switching of the screen-projecting application is ensured, and on the other hand, the loss of interface display information of the prior screen-projecting application caused by the sudden interruption of screen projection is avoided.
Optionally, creating a target auxiliary screen for the target application in the native device includes:
and creating the target auxiliary screen for the target application according to the display attribute of the native device.
Optionally, the method further includes:
and if the target application runs in the background and the screen projection is disconnected in the screen projection process of the target application, switching the target application from the background running to the foreground running.
One embodiment in the above application has the following advantages or benefits: when the screen is switched off, the target application is switched to the foreground to run, and therefore loss of interface display information of the target application is avoided.
Optionally, the sending the acquired interface content to the screen projection object includes:
and coding the acquired interface content by using an image coding technology or a video stream coding technology, and sending the coded interface content to the screen projection object.
Optionally, the local device includes a user terminal, and the screen projection object includes a vehicle-mounted device.
In a second aspect, an embodiment of the present application further discloses an application screen projection control device, including:
the screen projection application determining module is used for determining a target application to be projected;
the interface content sending module is used for sending the interface content of the target application in the running process to a virtual screen in the local equipment and performing display matching processing, wherein the virtual screen is created in advance according to the display attribute of a screen projection object, and the virtual screen is multiplexed by different screen applications to be projected;
the interface content acquisition module is used for acquiring the interface content loaded on the virtual screen;
and the screen projection display module is used for sending the acquired interface content to the screen projection object so as to display the screen projection object.
In a third aspect, an embodiment of the present application further discloses an electronic device, including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the application screen projection control method according to any one of the embodiments of the application.
In a fourth aspect, embodiments of the present application further disclose a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the application screen-projection control method according to any of the embodiments of the present application.
In the embodiment of the application, a reusable virtual screen is created in advance on the local device according to the display attribute of the screen projecting object, the interface content in the application running process is continuously sent to the virtual screen, the display matching processing is carried out, then the interface content is obtained from the virtual screen and sent to the screen projecting object for displaying, the problem that the application which does not support background running in the existing screen projecting scheme carries out interface screen projecting display between different devices is solved, the effect that the application running in the foreground or the background on the local device supports the interface display on other devices is achieved, the effect that the local device and other devices can display the interface content of different applications on the local device is achieved, and meanwhile, higher interface display quality can be presented on other devices is guaranteed; aiming at the screen projection application running in the background, if the screen projection is disconnected, the application is automatically switched from the background running to the foreground running, so that the loss of the interface display information of the application is avoided. Other effects of the above-described alternative will be described below with reference to specific embodiments.
Drawings
The drawings are included to provide a better understanding of the present solution and are not intended to limit the present application. Wherein:
FIG. 1 is a flow chart of a method for controlling application screen projection according to an embodiment of the application;
FIG. 2 is a flow chart of another application screen projection control method disclosed in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of application screen projection between a user terminal and a vehicle end according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an application screen projection control device according to an embodiment of the present application;
fig. 5 is a block diagram of an electronic device disclosed according to an embodiment of the present application.
Detailed Description
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application for the understanding of the same, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Fig. 1 is a flowchart of an application screen projection control method disclosed in an embodiment of the present application, and this embodiment may be applied to a case where interface content of any application is displayed on a screen between different devices, for example, in a scenario where a user terminal and a vehicle-mounted device are connected to each other, any application running on the user terminal is displayed on a display screen of the vehicle-mounted device on a screen for a user to view. The method of the embodiment may be executed by an application screen projection control device, which may be implemented by software and/or hardware, and may be integrated on any electronic device with computing capability, which may generally be a user terminal, such as a smart phone, a tablet computer, an ipad, a smart speaker, and the like. The application screen projection control device for executing the scheme of the embodiment can also be realized in the form of an application client or an applet.
In this embodiment, the communication connection between the local device and the screen projection object needs to be established in advance, and the communication connection includes wired connection and wireless connection, which may be implemented by bluetooth, wifi, or universal serial bus, for example. The screen projection object refers to a device for displaying application interface content running on the device, and can be flexibly determined according to different specific application scenes, for example, in a driving scene, the screen projection object can be a vehicle-mounted device; in a household life scene, the screen projection object can be household equipment such as an intelligent television.
As shown in fig. 1, the application screen-projection control method disclosed in this embodiment may include:
s101, determining a target application to be projected.
For example, after the communication connection between the local device and the screen projection object is established, the target application to be currently projected on the screen can be determined according to the selection operation of the user on the terminal. The target application can be in a foreground running state or a background running state on the local equipment, and can also be switched from the foreground running state to the background running state after the screen projection display is determined.
S102, sending interface contents of the target application in the running process to a virtual screen in the local equipment, and performing display matching processing, wherein the virtual screen is created in advance according to display attributes of screen projection objects, and the virtual screen is multiplexed by different applications to be projected.
The interface content of the target application in the running process comprises the following steps: the target application is the interface content in the background running process and the foreground running process, that is, the scheme of the embodiment can be simultaneously suitable for the application interface content in the foreground running process and the screen projection display of the application interface content in the background running process among different devices.
The virtual screen, or called virtual display screen, is a real display screen of the electronic device, and the virtual screen can be created through software programming, and is used for bearing interface content of the screen projection application in the running process, and displaying the application interface content on the virtual screen is equivalent to displaying and coding the application in the background, and is invisible to the user visually. Illustratively, if the native device employs the android system, a virtual screen may be created by calling the CreateVirtualDisplay interface; if the IOS system is adopted by the native device, a virtual screen can be created by calling the [ UIWindow alloc ] initWithFrame [ [ UIScreen mainScreen ] buildings ] interface.
Generally, the screen projection object and the real display screen of the local device have a difference in display effect, for example, an application on the screen projection object adopts a horizontal screen display mode, while the local device adopts a vertical screen display mode, in order to ensure the interface display quality on the screen projection object after the application is displayed on the screen, a virtual screen is created according to the display attribute of the screen projection object, and after the application interface content is sent to the virtual screen, display matching processing, such as interface display scale adjustment, interface display resolution adjustment, interface scaling processing and the like, is performed on the application interface content, so that the application interface content can be adapted to the virtual screen in the aspect of display, that is, adapted to the real display screen of the screen projection object. The display attributes (or called as display parameters) of the screen projection object include, but are not limited to, information such as display scale, display resolution, screen size, and display mode, i.e., horizontal screen display or vertical screen display.
Because any application on the local equipment supports screen projection display, in the screen projection process, the multiple to-be-projected screen applications share the virtual screen, so that a virtual screen does not need to be established and maintained for each to-be-projected screen application, the display attribute of the screen projection object does not need to be repeatedly acquired, the repeated configuration of the display attribute of the screen projection object can be reduced, and the resource consumption on the local equipment can be reduced. Moreover, as long as the target application is in the running state, the virtual screen can continuously acquire the interface content of the target application, and then the screen projection object can continuously acquire the interface content of the target application, so that even if the target application is in the background running state, the interface content of the target application can be successfully displayed on the screen projection object by the scheme of the embodiment.
S103, interface content borne on the virtual screen is obtained.
Illustratively, a pre-programmed content acquisition program can be called to perform background screen capture processing on the virtual screen to obtain interface content carried on the virtual screen, and then the interface content is sent to the screen projection object.
And S104, sending the acquired interface content to the screen projection object to be displayed on the screen projection object.
Optionally, sending the acquired interface content to the screen projection object includes: and coding the acquired interface content by using an image coding technology or a video stream coding technology, and sending the coded interface content to a screen projection object. The image coding technology or the video stream coding technology both belong to the existing mature technologies, and this embodiment will not be described in detail. And after the screen projection object acquires the coded interface content, decoding the interface content and sending the decoded interface content to a display screen for displaying so as to be viewed by a user. At the moment, the target application is displayed on the screen projection object, the local device can switch the target application to background operation or the target application is originally in the background operation according to the use requirement of the user, the background operation state is kept, and interface contents of other applications are displayed on the current screen for the user to check.
Optionally, the method of this embodiment further includes: and if the target application runs in the background and the screen projection is disconnected in the screen projection process of the target application, switching the target application from the background running to the foreground running. The local device can monitor the screen projection state in real time, and if the screen projection is monitored to be disconnected, namely the content of the application interface on the local device cannot be displayed on the screen projection object, the target application is switched to the foreground to run, so that the loss of the interface display information of the target application is avoided. For example, the target application is a navigation application, and in the navigation process, if the screen is switched off, the user cannot view the navigation route from the vehicle-mounted device, and if the user terminal does not display the navigation application interface, the user cannot know the navigation route at all, so that the current navigation requirement of the user is influenced. Factors for which the screen projection is turned off include, but are not limited to: the method comprises the following steps of interrupting communication connection between the local device and a screen projection object, generating failure of the screen projection object or the local device, running failure of a target application, running end of the target application and the like. For the condition that the screen-projecting state is disconnected due to the repairable temporary fault, if the local device monitors that the fault is eliminated, for example, the communication connection between the local device and the screen-projecting object is recovered, the fault of the screen-projecting object is repaired, and the like, the screen-projecting display operation can be recovered based on the current running state of the target application.
Further, before determining to switch the target application from background running to foreground running, the method of this embodiment further includes: determining whether the target application belongs to a preset application type, and if so, switching the target application from background running to foreground running, wherein the preset application type can be a specific application specified by a user in advance or a specific application screened out according to the priority of the application installed on the local equipment; the application priority may be determined according to the frequency of use by the user, or the priority of each application may be designated by the user.
In the embodiment, a reusable virtual screen is created in advance on the local device according to the display attribute of the screen projecting object, the interface content in the application running process is continuously sent to the virtual screen, the display matching processing is carried out, then the interface content is obtained from the virtual screen and sent to the screen projecting object for displaying, the problem that the application which does not support background running in the existing screen projecting scheme carries out interface screen projecting display between different devices is solved, the effect that the application which runs in the foreground or the background on the local device supports the interface display on other devices is achieved, the effect that the local device and other devices can display the interface content of different applications on the local device is achieved, and meanwhile, higher interface display quality can be presented on other devices is guaranteed; moreover, for the screen projection application running in the background, if the screen projection is disconnected, the application is automatically switched from the background running to the foreground running, so that the loss of the interface display information of the application is avoided.
Fig. 2 is a flowchart of another application screen projection control method disclosed in an embodiment of the present application, which is further optimized and expanded based on the above technical solution, and can be combined with the above optional embodiments. As shown in fig. 2, the method may include:
s201, determining a target application to be projected.
And S202, creating a target auxiliary screen for the target application in the local equipment.
In this embodiment, for different applications to be screen-projected, the local device creates an auxiliary screen for each application to cache interface contents of each application in the running process, and simultaneously ensures that screen-projection display can be executed in order when a plurality of applications to be screen-projected exist, so that screen-projection display efficiency is improved, and screen-projection display error probability is reduced.
The auxiliary screen and the virtual screen have the same attribute and can be created based on programming, and other implementation details can be the same except that the configuration parameters of the creation process are different. Illustratively, a corresponding target auxiliary screen can be respectively created for each to-be-projected-screen application including the target application according to the display attribute of the native device. The display attributes (or called as display parameters) of the local device include, but are not limited to, information such as display scale, display resolution, screen size, and display mode, and the display mode refers to horizontal screen display or vertical screen display for each application.
S203, sending the interface content of the target application in the running process to a target auxiliary screen.
And S204, if the interface content of the prior screen-casting application is not borne on the virtual screen, sending the interface content on the target auxiliary screen to the virtual screen, and performing display matching processing.
That is, when the virtual screen is not used by other applications, the content on the target auxiliary screen may be directly transmitted or updated to the virtual screen.
Further, the method of this embodiment further includes:
if the fact that the interface content of the prior screen-casting application is loaded on the virtual screen is confirmed, screen-casting termination information is sent to the prior screen-casting application to prompt the prior screen-casting application to release the use of the virtual screen;
and if the use state of the virtual screen is released, namely the virtual screen does not bear the interface content of the prior screen projection application, sending the interface content on the target auxiliary screen to the virtual screen.
Aiming at the switching of the screen projecting application, screen projecting termination information is sent to the prior screen projecting application, and the using state of the virtual screen is monitored, so that on one hand, the smooth realization of the switching of the screen projecting application can be ensured, and on the other hand, the loss of interface display information of the prior screen projecting application caused by the sudden interruption of the screen projecting can be avoided. Further, if the screen-casting application is operated in the background, after the screen-casting application releases the use of the virtual screen, the screen-casting application can be switched to the foreground to operate, so that the interface content of the screen-casting application can be continuously displayed on the local device.
S205, interface content carried on the virtual screen is obtained.
S206, sending the acquired interface content to the screen projection object to be displayed on the screen projection object.
Fig. 3 shows, as an example, a schematic view of an application screen projection between a user terminal and a vehicle side in an embodiment of the present application. As shown in fig. 3, a plurality of applications are installed on a user terminal, and in the screen projection process of each application, the native device first sends interface content in the application running process to an auxiliary screen, and when it is determined that the virtual screen is not used by other applications, refreshes the interface content carried on the auxiliary screen to the virtual screen; then, the local device intercepts interface contents borne on the virtual screen, performs video coding processing, and sends the interface contents to a vehicle terminal in a USB (universal serial bus) data line or wifi (wireless fidelity) mode; and finally, the vehicle end decodes the obtained coded video and sends the decoded video to a display screen for displaying so as to be checked by a user. The application displayed by the current screen projection can run on the background of the local device, so that other application interfaces can be displayed on the local device, and the effect that the screen projection object and the local device can display the interface contents of different applications on the local device is realized.
The following takes an arbitration module and a screen projection core module included in the local device as an example, and further exemplifies the scheme of the present embodiment, but should not be understood as a specific limitation to the present embodiment:
1) the method comprises the steps that a user performs application selection operation on a terminal interface, an arbitration module determines a target application B to be subjected to screen projection at present according to the selection of the user, and the target application B can be in a background running state in the screen projection process;
2) the target application B simultaneously responds to the selection operation of the user, triggers and creates an auxiliary screen corresponding to the target application B, and sends a use application of the virtual screen to the arbitration module;
3) the arbitration module can confirm whether to deliver the control authority of the virtual screen to the target application B or not according to the current use state of the virtual screen; namely, it is
If the arbitration module confirms that the virtual screen is not used by other applications A currently, the target application B can be informed to send the interface content on the auxiliary screen to the virtual screen;
if the arbitration module confirms that the virtual screen is currently used by other applications A, informing the other applications A to release the use of the virtual screen; other applications A release the use of the virtual screen, and simultaneously send the interface content on the auxiliary screen to a display screen of the user terminal for the user to view;
the arbitration module can monitor whether the virtual screen is completely released, and if the virtual screen is completely released, the arbitration module informs the target application B that the interface content on the auxiliary screen can be sent to the virtual screen;
5) after the virtual screen receives the interface content of the target application B, the screen projection core module intercepts the interface content from the virtual screen, and sends the interface content to the screen projection object after the interface content is coded, so that the interface content of the target application B can be displayed on the screen projection object.
In the embodiment, in the application screen projection process, the auxiliary screen of each application is matched with the reusable virtual screen, so that the interface content of the application running on the local equipment is sent to the screen projection object to be displayed, the problem that the application which does not support background running in the existing screen projection scheme performs interface screen projection display between different equipment is solved, the normal display of foreground application functions of the local equipment is ensured, meanwhile, the screen capture of the application can be made in the background, the effect that the local equipment and other equipment can display the interface content of different applications on the local equipment is realized, and meanwhile, the higher interface display quality can be presented on other equipment is ensured; and aiming at the switching of the screen projection application, screen projection termination information is sent to the prior screen projection application, and the using state of the virtual screen is monitored, so that on one hand, the smooth realization of the switching of the screen projection application is ensured, and on the other hand, the loss of interface display information of the prior screen projection application caused by the sudden interruption of screen projection is avoided.
Fig. 4 is a schematic structural diagram of an application screen projection control device disclosed in an embodiment of the present application, which may be applied to a case where interface content of any application is displayed on different devices in a screen projection manner, for example, in a scene where a user terminal and a vehicle-mounted device are connected to each other, any application running on the user terminal is displayed on a display screen of the vehicle-mounted device in a screen projection manner, so that the application can be viewed by a user. The apparatus of the embodiment may be implemented by software and/or hardware, and may be integrated on any electronic device with computing capability, where the electronic device may generally be a user terminal, such as a smart phone, a tablet computer, an ipad, a smart speaker, and the like.
As shown in fig. 4, the application screen-projection control apparatus 400 disclosed in this embodiment may include a screen-projection application determination module 401, an interface content sending module 402, an interface content obtaining module 403, and a screen-projection display module 404, wherein,
a screen projection application determining module 401, configured to determine a target application to be projected;
an interface content sending module 402, configured to send interface content of a target application in an operating process to a virtual screen in a local device, and perform display matching processing, where the virtual screen is pre-created according to display attributes of a screen projection object, and the virtual screen is multiplexed by different to-be-projected screen applications;
an interface content obtaining module 403, configured to obtain interface content loaded on a virtual screen;
and the screen projection display module 404 is configured to send the acquired interface content to the screen projection object to be displayed on the screen projection object.
In addition, according to the specific implementation of the solution of this embodiment, the division of each functional module may be flexibly changed or adjusted, and this embodiment is not limited in particular, for example, the screen projecting application determining module 401 and the interface content sending module 402 may be collectively referred to as an arbitration module, and the interface content obtaining module 403 and the screen projecting display module 404 may be collectively referred to as a screen projecting core module.
Optionally, the interface content of the target application in the running process includes: and the target application is the interface content in the background running process and the foreground running process.
Optionally, the apparatus of this embodiment further includes: an auxiliary screen creating module, configured to create a target auxiliary screen for a target application in the local device after the screen-casting application determining module 401 performs an operation of determining the target application to be screen-cast;
accordingly, the interface content sending module 402 includes:
the first sending unit is used for sending the interface content of the target application in the running process to the target auxiliary screen;
and the second sending unit is used for sending the interface content on the target auxiliary screen to the virtual screen and carrying out display matching processing if the interface content of the prior screen-casting application is not borne on the virtual screen.
Optionally, the interface content sending module 402 further includes:
the information sending unit is used for sending screen projection termination information to the prior screen projection application to prompt the prior screen projection application to release the use of the virtual screen if the fact that the interface content of the prior screen projection application is loaded on the virtual screen is confirmed;
and the third sending unit is used for sending the interface content on the target auxiliary screen to the virtual screen and carrying out display matching processing if the use state of the virtual screen is released.
Optionally, the auxiliary screen creating module is specifically configured to:
and creating a target auxiliary screen for the target application according to the display attribute of the native device.
Optionally, the apparatus of this embodiment further includes:
and the running state switching module is used for switching the target application from the background running to the foreground running if the target application runs in the background and the screen projection is disconnected in the screen projection process of the target application.
Optionally, the screen projection display module 404 is specifically configured to:
and coding the acquired interface content by using an image coding technology or a video stream coding technology, and sending the coded interface content to a screen projection object.
Optionally, the local device includes a user terminal, and the screen projection object includes a vehicle-mounted device.
The application screen-casting control device 400 disclosed in the embodiment of the present application can execute any application screen-casting control method disclosed in the embodiment of the present application, and has functional modules and beneficial effects corresponding to the execution method. Reference may be made to the description of any method embodiment of the present application for details not explicitly described in this embodiment.
According to an embodiment of the present application, an electronic device and a readable storage medium are also provided.
As shown in fig. 5, fig. 5 is a block diagram of an electronic device for implementing the application screen projection control method in the embodiment of the present application. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be examples only, and are not meant to limit implementations of embodiments of the present application described and/or claimed herein.
As shown in fig. 5, the electronic apparatus includes: one or more processors 501, memory 502, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components are interconnected using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions for execution within the electronic device, including instructions stored in or on the memory to display Graphical information for a Graphical User Interface (GUI) on an external input/output device, such as a display device coupled to the Interface. In other embodiments, multiple processors and/or multiple buses may be used, along with multiple memories and multiple memories, as desired. Also, multiple electronic devices may be connected, with each device providing portions of the necessary operations, e.g., as a server array, a group of blade servers, or a multi-processor system. In fig. 5, one processor 501 is taken as an example.
The memory 502 is a non-transitory computer readable storage medium provided by the embodiments of the present application. The storage stores instructions executable by at least one processor, so that the at least one processor executes the application screen projection control method provided by the embodiment of the application. The non-transitory computer-readable storage medium of the embodiments of the present application stores computer instructions for causing a computer to execute the application screen projection control method provided by the embodiments of the present application.
The memory 502, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the application screen projection control method in the embodiment of the present application, for example, the screen projection application determination module 401, the interface content transmission module 402, the interface content acquisition module 403, and the screen projection display module 404 shown in fig. 4. The processor 501 executes various functional applications and data processing of the electronic device by running non-transitory software programs, instructions and modules stored in the memory 502, that is, the application screen-projection control method in the above method embodiment is implemented.
The memory 502 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the electronic device to which the screen projection control method is applied, and the like. Further, the memory 502 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 502 may optionally include a memory remotely located from the processor 501, and these remote memories may be connected via a network to an electronic device for implementing the application screen projection control method of the present embodiment. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The electronic device for implementing the application screen projection control method in the embodiment may further include: an input device 503 and an output device 504. The processor 501, the memory 502, the input device 503 and the output device 504 may be connected by a bus or other means, and fig. 5 illustrates the connection by a bus as an example.
The input device 503 may receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic apparatus for implementing the screen-projection control method in the present embodiment, such as an input device of a touch screen, a keypad, a mouse, a track pad, a touch pad, a pointing stick, one or more mouse buttons, a track ball, a joystick, or the like. The output device 504 may include a display device, an auxiliary lighting device such as a Light Emitting Diode (LED), a tactile feedback device, and the like; the tactile feedback device is, for example, a vibration motor or the like. The Display device may include, but is not limited to, a Liquid Crystal Display (LCD), an LED Display, and a plasma Display. In some implementations, the display device can be a touch screen.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, Integrated circuitry, Application Specific Integrated Circuits (ASICs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
These computer programs, also known as programs, software applications, or code, include machine instructions for a programmable processor, and may be implemented using high-level procedural and/or object-oriented programming languages, and/or assembly/machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or Device for providing machine instructions and/or data to a Programmable processor, such as a magnetic disk, optical disk, memory, Programmable Logic Device (PLD), including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device for displaying information to a user, for example, a Cathode Ray Tube (CRT) or an LCD monitor; and a keyboard and a pointing device, such as a mouse or a trackball, by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback, e.g., visual feedback, auditory feedback, or tactile feedback; and input from the user may be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front-end component, e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here, or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication, e.g., a communication network. Examples of communication networks include: local Area Networks (LANs), Wide Area Networks (WANs), and the internet.
The computer system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.
In the embodiment of the application, a reusable virtual screen is created in advance on the local device according to the display attribute of the screen projecting object, the interface content in the application running process is continuously sent to the virtual screen, the display matching processing is carried out, then the interface content is obtained from the virtual screen and sent to the screen projecting object for displaying, the problem that the application which does not support background running in the existing screen projecting scheme carries out interface screen projecting display between different devices is solved, the effect that the application running in the foreground or the background on the local device supports the interface display on other devices is achieved, the effect that the local device and other devices can display the interface content of different applications on the local device is achieved, and meanwhile, higher interface display quality can be presented on other devices is guaranteed; moreover, for the screen projection application running in the background, if the screen projection is disconnected, the application is automatically switched from the background running to the foreground running, so that the loss of the interface display information of the application is avoided.
It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in the present application can be achieved, and the present invention is not limited herein.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An application screen projection control method is characterized by comprising the following steps:
determining a target application to be screened according to the selection operation of a user on the local device;
sending the interface content of the target application in the running process to a virtual screen in the local equipment, and performing display matching processing, wherein the virtual screen is pre-created according to the display attribute of a screen projection object, and the virtual screen is multiplexed by different screen applications to be projected;
acquiring interface content loaded on the virtual screen;
sending the acquired interface content to the screen projection object to be displayed on the screen projection object;
after the determining the target application to be screened, the method further comprises:
creating a target auxiliary screen for the target application in the local equipment, wherein the target auxiliary screen is used for caching interface contents of the target application in the running process;
correspondingly, the interface content of the target application in the running process is sent to a virtual screen in the native device, and the method comprises the following steps:
sending the interface content of the target application in the running process to the target auxiliary screen;
and if the interface content of the prior screen-casting application is not borne on the virtual screen, sending the interface content on the target auxiliary screen to the virtual screen.
2. The method of claim 1, wherein the interface content of the target application during the running process comprises: and the target application is applied to the interface contents in the background running process and the foreground running process.
3. The method of claim 1, wherein sending interface content of the target application during running to a virtual screen in a native device, further comprises:
if the fact that the interface content of the prior screen-casting application is loaded on the virtual screen is confirmed, screen-casting termination information is sent to the prior screen-casting application to prompt the prior screen-casting application to release the use of the virtual screen;
and if the fact that the using state of the virtual screen is released is monitored, the interface content on the target auxiliary screen is sent to the virtual screen.
4. The method of claim 2, wherein creating a target auxiliary screen for the target application in the native device comprises:
and creating the target auxiliary screen for the target application according to the display attribute of the native device.
5. The method of claim 1, further comprising:
and if the target application runs in the background and the screen projection is disconnected in the screen projection process of the target application, switching the target application from the background running to the foreground running.
6. The method of claim 1, wherein sending the acquired interface content to the screen-casting object comprises:
and coding the acquired interface content by using an image coding technology or a video stream coding technology, and sending the coded interface content to the screen projection object.
7. The method of claim 1, wherein the local device comprises a user terminal and the screen projection object comprises an in-vehicle device.
8. An application screen projection control device, comprising:
the screen projection application determining module is used for determining a target application to be projected according to the selection operation of a user on the local device;
the interface content sending module is used for sending the interface content of the target application in the running process to a virtual screen in the local equipment and performing display matching processing, wherein the virtual screen is created in advance according to the display attribute of a screen projection object, and the virtual screen is multiplexed by different screen applications to be projected;
the interface content acquisition module is used for acquiring the interface content loaded on the virtual screen;
the screen projection display module is used for sending the acquired interface content to the screen projection object so as to display the screen projection object;
the auxiliary screen creating module is used for creating a target auxiliary screen for the target application in the local equipment after the screen projection application determining module executes the operation of determining the target application to be projected, and the target auxiliary screen is used for caching the interface content of the target application in the running process;
correspondingly, the interface content sending module comprises:
the first sending unit is used for sending the interface content of the target application in the running process to the target auxiliary screen;
and the second sending unit is used for sending the interface content on the target auxiliary screen to the virtual screen and carrying out display matching processing if the interface content of the prior screen-casting application is not borne on the virtual screen.
9. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the application screen projection control method of any of claims 1-7.
10. A non-transitory computer readable storage medium storing computer instructions for causing a computer to execute the application screen-casting control method according to any one of claims 1 to 7.
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