CN116456136B - Equipment screen throwing method and device based on localization - Google Patents
Equipment screen throwing method and device based on localization Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000004807 localization Effects 0.000 title claims description 23
- 238000012795 verification Methods 0.000 claims description 20
- 238000012216 screening Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 238000005266 casting Methods 0.000 description 32
- 230000008569 process Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 4
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- 230000009471 action Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000013524 data verification Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 230000001788 irregular Effects 0.000 description 2
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Classifications
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- 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
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
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- 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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4355—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reformatting operations of additional data, e.g. HTML pages on a television screen
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- 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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
Abstract
The application provides a home-made equipment screen-throwing method and device, which are used for receiving a screen-throwing instruction sent by a control terminal, wherein the screen-throwing instruction comprises a screen-throwing signal and a screen-throwing equipment identifier, when the screen-throwing signal is a real-time signal, real-time data carried by the real-time signal can be obtained, the real-time data are converted into screen data according to a preset screen template, when the screen-throwing signal is a file signal, a data file corresponding to the file signal and the screen data in the data file can be obtained, then the screen data can be encoded based on the screen-throwing signal, live stream data are generated, and the live stream data are transmitted to screen-throwing equipment corresponding to the screen-throwing equipment identifier, so that the screen-throwing equipment can perform screen throwing on the screen-throwing picture after decoding the live stream data to obtain the screen-throwing picture, and the screen data are transmitted to the screen-throwing terminal in real time through a unified format transmission mode, and the compatibility of a home-made operating system under different environments can be improved.
Description
Technical Field
The application relates to the technical field of screen projection, in particular to a method and a device for projecting a screen of equipment based on localization.
Background
With the development of modern technology, the domestic operating system has a leap development in China, the vision and the interactivity of the domestic operating system are improved, the interface is used more and more simply, the whole use experience of the domestic operating system at the present stage is quite perfect, the basic software is rich, such as office software, drawing software and 3D software, and the daily office requirements of users are completely met.
However, since most of the current daily life major application scenes use environmental schemes such as an X86 chip, a windows, intel chip and the like, a series of compatibility problems are caused after the domestic operating system and the CPU hardware environment are used, and the screen-throwing technical problem is also included, namely, the screen-throwing technology is to acquire corresponding live stream data for screen throwing according to a screen throwing instruction issued by the control terminal by establishing a data transmission channel of the control terminal and the screen throwing equipment.
For example, the screen projection technology is used in application scenes such as classroom teaching, work meeting, product display and the like, so as to enhance the flexibility of teaching or demonstration. However, the object for screen projection by using the domestic operating system is usually an existing data file in the database, so that the real-time statistics of character data cannot be rendered and projected, and in some scenes, especially in classroom teaching and working conferences, real-time sign-in or voting is often required, and only an initiator can view the character data through the background, so that the compatibility of the domestic operating system still needs to be improved.
Disclosure of Invention
The application aims to at least solve one of the technical defects, and particularly the technical defect that in the prior art, an object for screen projection by utilizing a domestic operating system is usually an existing data file in a database, and the real-time statistic character data cannot be rendered and projected.
The application provides a device screen-throwing method based on localization, which is applied to a screen-throwing server, wherein the screen-throwing server adopts a localization operating system and a CPU hardware environment, and the method comprises the following steps:
receiving a screen-throwing instruction sent by a control terminal, wherein the screen-throwing instruction comprises a screen-throwing signal to be thrown and a screen-throwing equipment identifier; the signal category of the screen throwing signal comprises a real-time signal and a file signal;
if the screen throwing signal is a real-time signal, acquiring real-time data carried by the real-time signal, and converting the real-time data into picture data according to a preset picture template;
if the screen throwing signal is a file signal, acquiring a data file corresponding to the file signal and picture data in the data file;
encoding the picture data based on the screen throwing signal to generate live stream data;
Transmitting the live broadcast stream data to a screen throwing device corresponding to the screen throwing device identifier, so that the screen throwing device decodes the live broadcast stream data to obtain a screen throwing picture, and throwing the screen of the screen throwing picture.
Optionally, the converting the real-time data into the picture data according to a preset picture template includes:
determining the data type of the real-time data and a preset picture template corresponding to the data type;
and filling the real-time data into the preset picture template to obtain picture data.
Optionally, the acquiring the data file corresponding to the file signal includes:
analyzing the file signal to obtain keywords contained in the screen projection signal;
searching the keywords in a database to obtain data files corresponding to the keywords; the database is used for storing a plurality of data files to be screened in advance.
Optionally, the screen projection signal further includes request data of the control terminal;
the encoding the picture data based on the screen throwing signal to generate live stream data comprises the following steps:
decomposing the picture data to obtain video data and/or audio data;
Performing primary encoding on the video data and/or the audio data through an encoder respectively to generate video encoding data corresponding to the video data and/or audio encoding data corresponding to the audio data;
and carrying out secondary encoding on the request data, the video encoding data and/or the audio encoding data to generate live stream data.
Optionally, before the step of transmitting the live stream data to the screen projection device corresponding to the screen projection device identifier, the method further includes:
checking the live stream data based on the screen throwing equipment identifier to obtain a checking result;
if the verification result is passed, continuing to transmit the live stream data to the screen throwing equipment corresponding to the screen throwing equipment identifier;
if the verification result is that the screen is not passed, generating a screen failure signal, and returning the screen failure signal to the control terminal.
Optionally, the verifying the live stream data based on the screen-throwing device identifier to obtain a verification result includes:
acquiring screen throwing equipment corresponding to the screen throwing equipment identifier and equipment data of the screen throwing equipment;
Extracting request data corresponding to the control terminal from the live stream data;
and comparing the equipment data with the request data to obtain a comparison result, and determining a verification result of the live stream data according to the comparison result.
Optionally, the method further comprises:
if the number of the screen throwing instructions sent by the control terminal is multiple, adding each screen throwing instruction into an execution queue according to a receiving sequence, and sequentially executing each screen throwing instruction in the execution queue, so that the screen throwing equipment divides a screen throwing area to be thrown into multiple subareas according to a preset screen throwing rule after decoding to obtain a screen throwing picture corresponding to each screen throwing instruction, and sequentially throwing the screen throwing pictures corresponding to each screen throwing instruction to the corresponding subareas.
The application also provides a device screen throwing device based on localization, which comprises:
the system comprises an instruction receiving module, a control terminal and a display module, wherein the instruction receiving module is used for receiving a screen projection instruction sent by the control terminal, and the screen projection instruction comprises a screen projection signal to be projected and a screen projection equipment identifier; the signal category of the screen throwing signal comprises a real-time signal and a file signal;
the data conversion module is used for acquiring real-time data carried by the real-time signal if the screen-throwing signal is a real-time signal, and converting the real-time data into picture data according to a preset picture template;
The data acquisition module is used for acquiring a data file corresponding to the file signal and picture data in the data file if the screen-throwing signal is the file signal;
the data coding module is used for coding the picture data based on the screen throwing signal to generate live stream data;
and the screen projection module is used for transmitting the live broadcast stream data to the screen projection equipment corresponding to the screen projection equipment identifier, so that the screen projection equipment decodes the live broadcast stream data to obtain a screen projection screen, and projects the screen projection screen.
The present application also provides a storage medium having stored therein computer readable instructions which, when executed by one or more processors, cause the one or more processors to perform the steps of the localization-based device screening method according to any of the above embodiments.
The application also provides a computer device, characterized by comprising: one or more processors, and memory;
the memory has stored therein computer readable instructions that, when executed by the one or more processors, perform the steps of the localization-based device screening method of any of the above embodiments.
From the above technical solutions, the embodiment of the present application has the following advantages:
the method and the device for screen casting based on domestic equipment provided by the application can execute a screen casting instruction to screen casting corresponding to a screen casting terminal when receiving the screen casting instruction sent by the control terminal, wherein the screen casting instruction comprises a screen casting signal and a screen casting equipment identifier, the signal class of the screen casting signal comprises a real-time signal and a file signal, when the screen casting signal is the real-time signal, the real-time data carried by the real-time signal can be acquired, the real-time data can be converted into the screen data according to a preset screen template, different types of real-time data can be converted into the screen data in the same format in a mode, so that when the screen casting signal is the file signal, a data file corresponding to the file signal and the screen data in the data file can be acquired, after the screen data corresponding to the screen casting signal are acquired, the screen data can be encoded based on the screen casting signal first, the screen data can be generated, then the real-time data can be transmitted to the screen casting equipment corresponding to the screen casting equipment identifier, the screen casting data can be decoded in a mode of live broadcasting, the screen casting equipment can be transmitted in a mode of being compatible with the domestic equipment, and the screen casting environment can be realized, and the screen casting environment can be directly broadcast in a mode of the live broadcasting mode, and the screen casting environment can be realized.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for screen projection of a device based on localization according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a domestic-based screen-throwing device of a device according to an embodiment of the present application;
fig. 3 is a schematic diagram of an internal structure of a computer device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
With the development of modern technology, the domestic operating system has a leap development in China, the vision and the interactivity of the domestic operating system are improved, the interface is used more and more simply, the whole use experience of the domestic operating system at the present stage is quite perfect, the basic software is rich, such as office software, drawing software and 3D software, and the daily office requirements of users are completely met.
However, since most of the current daily life major application scenes use environmental schemes such as an X86 chip, a windows, intel chip and the like, a series of compatibility problems are caused after the domestic operating system and the CPU hardware environment are used, and the screen-throwing technical problem is also included, namely, the screen-throwing technology is to acquire corresponding live stream data for screen throwing according to a screen throwing instruction issued by the control terminal by establishing a data transmission channel of the control terminal and the screen throwing equipment.
For example, the screen projection technology is used in application scenes such as classroom teaching, work meeting, product display and the like, so as to enhance the flexibility of teaching or demonstration. However, the object for screen projection by using the domestic operating system is usually an existing data file in the database, so that the real-time statistics of character data cannot be rendered and projected, and in some scenes, especially in classroom teaching and working conferences, real-time sign-in or voting is often required, and only an initiator can view the character data through the background, so that the compatibility of the domestic operating system still needs to be improved.
Based on the above, the application provides the following technical scheme, and the specific scheme is as follows:
in one embodiment, as shown in fig. 1, fig. 1 is a schematic flow chart of a device screen-throwing method based on localization according to an embodiment of the present application; the application provides a device screen-throwing method based on localization, which is applied to a screen-throwing server, wherein the screen-throwing server adopts a localization operating system and CPU hardware environment and specifically comprises the following steps:
s110: receiving a screen-throwing instruction sent by a control terminal, wherein the screen-throwing instruction comprises a screen-throwing signal to be thrown and a screen-throwing equipment identifier; the signal class of the screen-throwing signal comprises a real-time signal and a file signal.
In this step, when a user has a screen-throwing demand and needs to throw a screen through the screen-throwing server, data needing to throw the screen can be selected at the control terminal, so that the control terminal generates a screen-throwing instruction according to the data, and sends the screen-throwing instruction to the screen-throwing server, and when the screen-throwing server receives the screen-throwing instruction, the screen-throwing server can acquire corresponding picture data according to the screen-throwing instruction.
It is understood that the control terminal herein refers to a terminal device that a user inputs screen-throwing information to control the screen-throwing server to work, where the terminal device includes, but is not limited to, a smart phone, a notebook computer, a desktop computer, a smart television, and the like. In the process of sending the screen throwing instruction to the control terminal, the screen throwing instruction can be transmitted through a screen throwing protocol after the control terminal and the screen throwing server are connected with the same network through short-range or long-range sending, and the long-range sending is used for establishing a transmission channel between the control terminal and the screen throwing server based on a local area network and transmitting the screen throwing instruction through the transmission channel.
It should be noted that, the screen-throwing instruction of the present application includes a screen-throwing signal to be thrown and a screen-throwing device identifier, where the signal class of the screen-throwing signal may also include a real-time signal and a file signal, which carry corresponding data to be thrown, and the screen-throwing device identifier refers to an identity identifier of a screen-throwing terminal for displaying picture data corresponding to the screen-throwing signal, and the screen-throwing server may query the corresponding screen-throwing terminal according to the screen-throwing device identifier.
Specifically, if the screen throwing data selected by the user at the control terminal is character data collected in real time, the control terminal can receive the character data in real time and convert the character data into real-time signals to be continuously transmitted to the screen throwing server; if the screen projection data selected by the user at the control terminal is a data file stored in the server, the control terminal can convert the characteristic information of the data file into a file signal and directly send the file signal to the screen projection server.
S120: if the screen throwing signal is a real-time signal, acquiring real-time data carried by the real-time signal, and converting the real-time data into picture data according to a preset picture template.
In this step, after receiving the screen-throwing instruction sent by the control terminal in step S120, the signal type of the screen-throwing signal in the screen-throwing instruction may be judged first, when the signal type of the screen-throwing signal is a real-time signal, the real-time signal may be parsed to obtain real-time data carried by the real-time signal, and then the real-time data obtained by parsing may be converted into picture data according to a preset picture template.
Specifically, when the received screen projection signal is a continuous and continuous long signal, the screen projection signal is a real-time signal, so that the screen projection server can analyze the real-time signal while receiving the real-time signal to obtain real-time changing character data, and then the real-time changing character data can be converted into a dynamic graph which changes with time through a picture template stored in advance, so that picture data of the dynamic graph can be obtained.
For example, in a real scene of a working conference, a host initiates a site voting through a control terminal, sends the voting result in real time to a screen throwing device for display, the control terminal can convert the voting result into a real-time signal and transmit the real-time signal to a screen throwing server, the screen throwing server fills character data carried by the real-time signal into a pre-stored image template after receiving the real-time signal to obtain a dynamic image with real-time change, and then can acquire the picture data of the dynamic image and send the picture data to the screen throwing device for display, so that the fair and public fairness of the voting process is ensured.
S130: and if the screen throwing signal is a file signal, acquiring a data file corresponding to the file signal and picture data in the data file.
In this step, after receiving the screen-throwing instruction sent by the control terminal in step S120, the signal type of the screen-throwing signal in the screen-throwing instruction may be judged first, and when the signal type of the screen-throwing signal is a file signal, the corresponding data file may be directly retrieved according to the file characteristic information carried by the file signal, so as to obtain the picture data in the data file.
Specifically, when the received screen-throwing signal is a stable short signal, it is indicated that the screen-throwing signal is a file signal, so that the screen-throwing server can obtain file characteristic information carried by the file signal through analysis after receiving the file signal, where the file characteristic information refers to an identity identifier for distinguishing from other data files, and the identity identifier has uniqueness, can be a file name corresponding to the data file, or can be a data ID generated during storage of the data file, and is not limited herein.
It should be noted that, the data file of the present application may be suitable for various file formats commonly used in domestic operating systems, including but not limited to document formats, picture formats, video formats, audio formats, etc., for example, the document formats may be TXT, DOC, PPT, DOCX, etc.; the picture format may be JPG, PNG, PDF, etc.; the video format may be FLV, RMVB, MP4, etc.; the audio format may be WMA, MP3, etc. And the picture data in the data file may include corresponding video picture and/or audio data in various file formats.
S140: and encoding the picture data based on the screen throwing signal to generate live stream data.
In this step, after the picture data is obtained in step S130 or step S140, the picture data may be encoded in different encoding modes according to the type of the picture data, so as to generate live stream data, where the picture data generally includes video data and/or audio data, where the video data refers to an image picture without audio, the audio picture refers to sound data without image, and different encoding modes are used for different data types.
Specifically, when the picture data is encoded, the encoder may be used to encode the picture data to obtain encoded data, if the picture data has multiple data types at the same time, the data of each data type may be encoded respectively, and after the encoded data corresponding to each data type is obtained, each encoded data may be encapsulated to generate live stream data.
In the application, the picture data is encoded, namely, the picture data is compressed into a data code stream, so that the data volume of the picture data is reduced, the data transmission between a screen throwing server and screen throwing equipment is facilitated, and the data transmission rate is improved; when the video data and the audio data exist in the picture data at the same time, the video data and the audio data can be compressed into a video code stream and an audio code stream respectively and stored in a file according to a certain format.
For example, the video data rate transmitted in the internet is typically 10 Mbit/s, i.e. the transmission data amount of 1 second is 10Mbit, for 1080P video in YUV422 format, 31.64Mbit is needed for transmitting one frame of image, if 30 frames of image are transmitted in 1 second, the rate is 949.2 Mbit/s, and the data amount is large, so that the video data cannot be transmitted in the internet at all, so that the video data can be encoded and compressed, the code rate is compressed to 6-8 Mbit/s, the compression rate is more than 100 times, and the audio data is the same.
S150: and transmitting the live stream data to a screen throwing device corresponding to the screen throwing device identification, so that the screen throwing device decodes the live stream data to obtain a screen throwing picture, and throwing the screen of the screen throwing picture.
In this step, after the live stream data is generated in step S140, a corresponding screen-throwing terminal may be obtained according to the screen-throwing device identification device in the screen-throwing instruction, and then the live stream data may be transmitted to the screen-throwing device, so that the screen-throwing device decodes the live stream data to obtain a screen-throwing picture, and the screen-throwing picture is thrown.
In particular, in the process of transmitting live streaming data, the live streaming data may be transmitted through a streaming media protocol, where the streaming media protocol defines how the live streaming data is to be decomposed into small data packets and the order in which they are transmitted between different devices, and the streaming media protocols used in the internet are generally RTMP and RTSP.
Further, after receiving the live stream data, the screen projection device can decode the live stream data to generate a screen projection picture, namely, the live stream data can be firstly unpacked to obtain a data code stream contained in the live stream data, then each data code stream is decoded to obtain corresponding original data, and after synchronously combining each original data to generate the screen projection picture, the screen projection picture is displayed.
In the above embodiment, when the screen throwing instruction sent by the control terminal is received, the screen throwing instruction may be executed to a screen corresponding to the screen throwing terminal, where the screen throwing instruction includes a screen throwing signal and a screen throwing device identifier, a signal class of the screen throwing signal includes a real-time signal and a file signal, when the screen throwing signal is a real-time signal, real-time data carried by the real-time signal may be acquired, and the real-time data may be converted into screen data according to a preset screen template, in this way, the different types of real-time data may be converted into screen data in the same format, so that the screen throwing device is compatible in a screen throwing server adopting a domestic operating system and a CPU hardware environment, when the screen throwing signal is a file signal, a data file corresponding to the file signal and the screen data in the data file may be acquired, after the screen throwing data corresponding to the screen throwing signal is acquired, the screen data may be encoded based on the screen throwing signal first, and then the live stream data may be transmitted to the screen throwing device corresponding to the screen throwing device identifier, so that the screen throwing device decodes the screen throwing data and performs the screen throwing data in a unified manner, and the live stream data may be transmitted in the mode, and the live stream data may not be compatible with the screen throwing system in the domestic environment.
In one embodiment, the converting the real-time data into the picture data according to the preset picture template in step S120 may include:
s121: and determining the data type of the real-time data and a preset picture template corresponding to the data type.
S122: and filling the real-time data into a preset picture template to obtain picture data.
In this embodiment, after the real-time data is obtained, the data type of the real-time data and the preset picture template corresponding to the data type may be determined, and the real-time data is filled into the preset picture template to obtain the picture data, where a user may store the picture templates applicable to various data types in advance, for example, the picture templates may be in a mode of visually viewing various data proportions, or may be in a mode of comparing data differences, such as a table mode.
For example, for real-time data of a voting, a bar graph can be selected by the preset screen template, then the voting result of each option is filled into an area corresponding to the bar graph by the screen throwing server, the filled screen data is sent to the screen throwing device for screen throwing, the voting result of each option is changed continuously along with the increase of the number of votes, the bar graph displayed by the screen throwing device is updated continuously, further, the voice introduction can be set by the preset screen template, and the data in the bar graph is broadcasted in a voice mode at regular time.
In one embodiment, the obtaining the data file corresponding to the file signal in step S130 may include:
s131: and analyzing the file signal to obtain keywords contained in the screen projection signal.
S132: searching the keywords in the database to obtain data files corresponding to the keywords; the database stores a plurality of data files to be screened in advance.
In this embodiment, when the screen-throwing signal received by the screen-throwing server is a file signal, the file signal may be parsed to obtain a keyword included in the screen-throwing signal, and then a data file corresponding to the keyword may be searched in the database, so as to obtain picture data in the data file.
It can be understood that the data files stored in the database may be data files with different formats uploaded by the user, or may be video files and audio files obtained through third party application software, and after the file signals are parsed to obtain corresponding keywords, the keywords may be used to search in the database through corresponding query paths, so as to obtain the corresponding audio files.
For example, if the data file to be screened is a file uploaded by the user, the data file can be searched in a local cache of the screening server, and if the data file to be screened is a file in a certain third party application software, the screening server can search in the third party application software through a transmission channel with the third party application software, and obtain the corresponding data file.
In one embodiment, the screen projection signal further includes request data of the control terminal, and the encoding of the picture data based on the screen projection signal in step S140 to generate live stream data may include:
s141: and decomposing the picture data to obtain video data and/or audio data.
S142: and respectively performing primary encoding on the video data and/or the audio data by an encoder to generate video encoding data corresponding to the video data and/or audio encoding data corresponding to the audio data.
S143: and carrying out secondary encoding on the request data, the video encoding data and/or the audio encoding data to generate live stream data.
In this embodiment, after the picture data is obtained, the audio and video data of the picture data may be separated, so as to perform primary encoding on the video data and the audio data through the encoder, so as to compress the data amounts of the video data and the audio data, generate video encoded data corresponding to the video data and audio encoded data corresponding to the audio data, and then package the request data of the control terminal together with the video encoded data and the audio encoded data, so as to synthesize live stream data for transmission between devices, where the request data refers to access data for establishing connection between the screen-throwing server and the screen-throwing terminal.
It will be appreciated that the picture data may be video data only, or audio data may be included in both video data and audio data, the data files in different formats may include different types of data, for example, the picture data obtained from the data files in the document format and the picture format may be video data, and the data files in the video format may include both video data and audio data.
Specifically, in the process of encoding video data and audio data respectively, various modes of encoding are adopted by an encoder, modes such as H264, MPEG-4, webM/VP8, theora and the like can be selected for the video data, and modes such as Speex, AAC, ogg/Vorbis and the like can be selected for the audio data. In the encoding process of the present application, video data may be H264 encoded, and an audio file may be AAC encoded.
In one embodiment, before transmitting the live streaming data to the screen capturing device corresponding to the screen capturing device identifier in step S150, the method may further include:
s151: and checking the live stream data based on the screen-throwing equipment identifier to obtain a checking result.
S152: if the verification result is passed, continuing to execute the step of transmitting the live stream data to the screen throwing equipment corresponding to the screen throwing equipment identifier.
S153: if the verification result is that the screen is not passed, generating a screen failure signal, and returning the screen failure signal to the control terminal.
In this embodiment, before the live stream data is transmitted to the screen-casting device corresponding to the screen-casting device identifier, the live stream data may be checked based on the screen-casting device identifier to obtain a check result, that is, request data carried in the live stream data is extracted and used for requesting to access the screen-casting device corresponding to the screen-casting device identifier, if the access request passes, the step of transmitting the live stream data to the screen-casting device corresponding to the screen-casting device identifier is continuously executed, if the access request does not pass, a screen-casting failure signal is generated, and the screen-casting failure signal is returned to the control terminal.
It can be understood that when the control terminal sends the screen-throwing instruction, the screen-throwing instruction carries corresponding request data, and packages the request data together into the live stream data when encoding the picture data, so that the screen-throwing server can verify the request data in the live stream data, and external systems are prevented from invading the screen-throwing equipment to interrupt screen throwing or maliciously throw the screen, for example, the external systems randomly control and interrupt the screen throwing of the screen-throwing server in the current conference room, thereby causing trouble to the participant members in the conference room.
In one embodiment, step S151 performs verification on live stream data based on the screen-throwing device identifier, to obtain a verification result, which may include:
s511: and acquiring the screen throwing equipment corresponding to the screen throwing equipment identifier and equipment data of the screen throwing equipment.
S512: and extracting the request data corresponding to the control terminal from the live stream data.
S513: and comparing the equipment data with the request data to obtain a comparison result, and determining a verification result of the live stream data according to the comparison result.
In this embodiment, in the process of verifying live stream data, the screen-casting device corresponding to the screen-casting device identifier and the device data of the screen-casting device may be obtained first, then the request data corresponding to the control terminal is extracted from the live stream data, so as to compare the device data with the request data, and obtain a comparison result, if the comparison result is consistent, it is indicated that the verification result of the live stream data is passed, and if the comparison result is inconsistent, it is indicated that the verification result of the live stream data is not passed.
Specifically, the device data and the request data may be random digital codes with timeliness, may be identification codes of the screen-throwing device, or may be login account numbers and passwords of the screen-throwing device, which is not limited herein. In the application, the equipment data can be set as an account number and a password set by the screen throwing equipment, the screen throwing server can extract the request data in the live stream data, and carry out login test on the account number and the password carried by the request data, if the login is successful, the live stream data is forwarded to the screen throwing equipment, so that the screen throwing equipment decodes the live stream data and renders the live stream data to a screen for display.
Further, the mode of forwarding the live stream data to the screen throwing device comprises wired forwarding and wireless forwarding; when the forwarding mode is wired, the screen throwing server and the screen throwing equipment can be directly connected through video interfaces such as HDMI or VGA, live stream data are transmitted to the screen throwing equipment through the video interfaces, and the mode can ensure the stability of transmission and the definition of image quality; when the forwarding mode is wireless, the screen-throwing server and the screen-throwing equipment can be connected in a wireless mode through wireless transmission technologies such as WiFi, mi, cast, airPlay and the like, so that the transmission of live stream data is realized.
In one embodiment, the method may further comprise:
s160: if the screen throwing instructions sent by the control terminal are multiple, adding the screen throwing instructions into an execution queue according to the receiving sequence, and sequentially executing each screen throwing instruction in the execution queue, so that the screen throwing equipment divides a screen throwing area to be thrown into multiple subareas according to a preset screen throwing rule after decoding to obtain a screen throwing picture corresponding to each screen throwing instruction, and sequentially throwing the screen throwing pictures corresponding to the screen throwing instructions to the corresponding subareas.
In this embodiment, when a user has a need of putting multiple pictures on the same screen, a control terminal may send multiple screen-putting instructions to a screen-putting server, and when the screen-putting server receives the multiple screen-putting instructions, each screen-putting instruction may be added to an execution queue according to a receiving order, each screen-putting instruction in the execution queue is executed in turn, and after corresponding live stream data is generated, the live stream data is transmitted to the screen-putting device, so that after the live stream data is decoded by the screen-putting device to generate the corresponding screen-putting picture, the screen-putting area to be projected is divided into multiple subregions according to a preset screen-putting rule, and the screen-putting pictures corresponding to the screen-putting instructions are projected to the corresponding subregions in turn.
Specifically, when a screen throwing rule is preset, according to actual screen throwing requirements, a screen throwing area can be regularly divided, irregular division can be performed, when the regular division is performed, the area to be thrown can be averagely divided into subareas corresponding to the number of screen throwing instructions, when the irregular division is performed, the area to be thrown can be divided into areas in a form of one master and multiple slaves according to the number of screen throwing instructions, in short, a larger subarea is divided as a main area, and a plurality of small subareas are taken as auxiliary areas. Other manners of implementing the division of the sub-regions in the present application may be used as the preferred scheme of the present application, and are not limited herein.
Further, in the process that the user sends a plurality of screen throwing instructions through the control terminal, the user can select a plurality of screen throwing instructions to send at the same time, or can add a screen throwing instruction to a screen throwing server in the screen throwing process, and whenever the screen throwing terminal receives live stream data forwarded by the screen throwing server and decodes the live stream data into a screen throwing picture, the screen throwing area to be thrown can be updated according to a preset screen throwing rule, and a new screen throwing picture and the screen throwing picture already in the screen throwing process are displayed on the same screen.
The screen projection device based on localization provided by the embodiment of the application is described below, and the screen projection device based on localization described below and the screen projection method based on localization described above can be correspondingly referred to each other.
In one embodiment, as shown in fig. 2, fig. 2 is a schematic structural diagram of a screen throwing device of a device based on localization according to an embodiment of the present application; the application also provides a domestic equipment screen projection device, which comprises an instruction receiving module 210, a data conversion module 220, a data acquisition module 230, a data coding module 240 and a picture screen projection module 250, and specifically comprises the following steps:
the instruction receiving module 210 is configured to receive a screen-throwing instruction sent by the control terminal, where the screen-throwing instruction includes a screen-throwing signal to be thrown on a screen and a screen-throwing device identifier; the signal class of the screen-throwing signal comprises a real-time signal and a file signal.
The data conversion module 220 is configured to obtain real-time data carried by the real-time signal if the screen-throwing signal is the real-time signal, and convert the real-time data into picture data according to a preset picture template.
The data obtaining module 230 is configured to obtain a data file corresponding to the file signal and picture data in the data file if the screen projection signal is the file signal.
The data encoding module 240 is configured to encode the picture data based on the screen projection signal, and generate live stream data.
The screen projection module 250 is configured to transmit live stream data to a screen projection device corresponding to the screen projection device identifier, so that the screen projection device decodes the live stream data to obtain a screen projection screen, and projects the screen projection screen.
In the above embodiment, when the screen throwing instruction sent by the control terminal is received, the screen throwing instruction may be executed to a screen corresponding to the screen throwing terminal, where the screen throwing instruction includes a screen throwing signal and a screen throwing device identifier, a signal class of the screen throwing signal includes a real-time signal and a file signal, when the screen throwing signal is a real-time signal, real-time data carried by the real-time signal may be acquired, and the real-time data may be converted into screen data according to a preset screen template, in this way, the different types of real-time data may be converted into screen data in the same format, so that the screen throwing device is compatible in a screen throwing server adopting a domestic operating system and a CPU hardware environment, when the screen throwing signal is a file signal, a data file corresponding to the file signal and the screen data in the data file may be acquired, after the screen throwing data corresponding to the screen throwing signal is acquired, the screen data may be encoded based on the screen throwing signal first, and then the live stream data may be transmitted to the screen throwing device corresponding to the screen throwing device identifier, so that the screen throwing device decodes the screen throwing data and performs the screen throwing data in a unified manner, and the live stream data may be transmitted in the mode, and the live stream data may not be compatible with the screen throwing system in the domestic environment.
In one embodiment, the data conversion module 220 may include:
the picture template determining submodule is used for determining the data type of the real-time data and the preset picture template corresponding to the data type.
And the real-time data filling sub-module is used for filling the real-time data into a preset picture template to obtain picture data.
In one embodiment, the data acquisition module 230 may include:
and the keyword acquisition sub-module is used for analyzing the file signal to obtain keywords contained in the screen throwing signal.
The data file retrieval sub-module is used for retrieving the keywords in the database to obtain data files corresponding to the keywords; the database stores a plurality of data files to be screened in advance.
In one embodiment, the screen projection signal further includes request data of the control terminal; the data encoding module 240 may include:
and the picture data decomposition sub-module is used for decomposing the picture data to obtain video data and/or audio data.
And the primary coding sub-module is used for respectively carrying out primary coding on the video data and/or the audio data through an encoder to generate video coding data corresponding to the video data and/or audio coding data corresponding to the audio data.
And the secondary coding sub-module is used for carrying out secondary coding on the request data, the video coding data and/or the audio coding data to generate live stream data.
In one embodiment, the apparatus may further include:
and the data verification module is used for verifying the live stream data based on the screen throwing equipment identifier to obtain a verification result.
And the verification passing module is used for continuously executing the step of transmitting the live stream data to the screen throwing equipment corresponding to the screen throwing equipment identifier if the verification result is that the live stream data passes.
The signal return module is used for generating a screen failure signal if the verification result is not passed, and returning the screen failure signal to the control terminal.
In one embodiment, the data verification module may include:
the equipment data acquisition sub-module is used for acquiring the screen throwing equipment corresponding to the screen throwing equipment identifier and the equipment data of the screen throwing equipment.
And the request data acquisition sub-module is used for extracting the request data corresponding to the control terminal from the live stream data.
And the data comparison sub-module is used for comparing the equipment data with the request data to obtain a comparison result, and determining a verification result of the live stream data according to the comparison result.
In one embodiment, the apparatus may further include:
the sub-region dividing module is used for adding each screen-throwing instruction into the execution queue according to the receiving sequence if the screen-throwing instructions sent by the control terminal are multiple, and sequentially executing each screen-throwing instruction in the execution queue, so that the screen-throwing equipment divides the screen-throwing equipment into a plurality of sub-regions according to a preset screen-throwing rule after decoding to obtain a screen-throwing picture corresponding to each screen-throwing instruction, and sequentially throwing the screen-throwing picture corresponding to each screen-throwing instruction to the corresponding sub-region.
In one embodiment, the present application also provides a storage medium having stored therein computer readable instructions, which when executed by one or more processors, cause the one or more processors to perform the steps of the localization-based device screening method as set forth in any one of the above embodiments.
In one embodiment, the present application also provides a computer device having stored therein computer readable instructions, which when executed by one or more processors, cause the one or more processors to perform the steps of the localization-based device screening method according to any of the above embodiments.
Schematically, as shown in fig. 3, fig. 3 is a schematic internal structure of a computer device according to an embodiment of the present application, and the computer device 300 may be provided as a server. Referring to FIG. 3, a computer device 300 includes a processing component 302 that further includes one or more processors, and memory resources represented by memory 301, for storing instructions, such as applications, executable by the processing component 302. The application program stored in the memory 301 may include one or more modules each corresponding to a set of instructions. Further, the processing component 302 is configured to execute instructions to perform the localization-based device projection method of any of the embodiments described above.
The computer device 300 may also include a power supply component 303 configured to perform power management of the computer device 300, a wired or wireless network interface 304 configured to connect the computer device 300 to a network, and an input output (I/O) interface 305. The computer device 300 may operate based on an operating system stored in memory 301, such as Windows Server TM, mac OS XTM, unix TM, linux TM, free BSDTM, or the like.
It will be appreciated by those skilled in the art that the structure shown in FIG. 3 is merely a block diagram of some of the structures associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements may be applied, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and may be combined according to needs, and the same similar parts may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a screen method is thrown to equipment based on localization, its characterized in that, throw screen method and be applied to throw screen server, throw screen server and adopt domestic operating system and CPU hardware environment, the method includes:
receiving a screen-throwing instruction sent by a control terminal, wherein the screen-throwing instruction comprises a screen-throwing signal to be thrown and a screen-throwing equipment identifier; the signal category of the screen throwing signal comprises a real-time signal and a file signal;
if the screen throwing signal is a real-time signal, acquiring real-time data carried by the real-time signal, and determining the data type of the real-time data and a preset picture template corresponding to the data type; filling the real-time data into the preset picture template to obtain picture data;
If the screen-throwing signal is a file signal, analyzing the file signal to obtain keywords contained in the screen-throwing signal; searching the keywords in a database to obtain data files corresponding to the keywords; acquiring picture data in the data file; the database is pre-stored with a plurality of data files to be screened;
encoding the picture data based on the screen throwing signal to generate live stream data;
transmitting the live broadcast stream data to a screen throwing device corresponding to the screen throwing device identifier, so that the screen throwing device decodes the live broadcast stream data to obtain a screen throwing picture, and throwing the screen of the screen throwing picture.
2. The device screen projection method of claim 1, wherein the screen projection signal further comprises request data of the control terminal;
the encoding the picture data based on the screen throwing signal to generate live stream data comprises the following steps:
decomposing the picture data to obtain video data and/or audio data;
performing primary encoding on the video data and/or the audio data through an encoder respectively to generate video encoding data corresponding to the video data and/or audio encoding data corresponding to the audio data;
And carrying out secondary encoding on the request data, the video encoding data and/or the audio encoding data to generate live stream data.
3. The device screen projection method according to claim 1, wherein before the step of transmitting the live stream data to the screen projection device corresponding to the screen projection device identifier, the method further comprises:
checking the live stream data based on the screen throwing equipment identifier to obtain a checking result;
if the verification result is passed, continuing to transmit the live stream data to the screen throwing equipment corresponding to the screen throwing equipment identifier;
if the verification result is that the screen is not passed, generating a screen failure signal, and returning the screen failure signal to the control terminal.
4. The device screen projection method according to claim 3, wherein the verifying the live stream data based on the screen projection device identifier to obtain a verification result includes:
acquiring screen throwing equipment corresponding to the screen throwing equipment identifier and equipment data of the screen throwing equipment;
extracting request data corresponding to the control terminal from the live stream data;
and comparing the equipment data with the request data to obtain a comparison result, and determining a verification result of the live stream data according to the comparison result.
5. The device screening method of claim 1, further comprising:
if the number of the screen throwing instructions sent by the control terminal is multiple, adding each screen throwing instruction into an execution queue according to a receiving sequence, and sequentially executing each screen throwing instruction in the execution queue, so that the screen throwing equipment divides a screen throwing area to be thrown into multiple subareas according to a preset screen throwing rule after decoding to obtain a screen throwing picture corresponding to each screen throwing instruction, and sequentially throwing the screen throwing pictures corresponding to each screen throwing instruction to the corresponding subareas.
6. Equipment based on localization throws screen device, characterized by that includes:
the system comprises an instruction receiving module, a control terminal and a display module, wherein the instruction receiving module is used for receiving a screen projection instruction sent by the control terminal, and the screen projection instruction comprises a screen projection signal to be projected and a screen projection equipment identifier; the signal category of the screen throwing signal comprises a real-time signal and a file signal;
the data conversion module is used for acquiring real-time data carried by the real-time signal if the screen-throwing signal is a real-time signal, and determining the data type of the real-time data and a preset picture template corresponding to the data type; filling the real-time data into the preset picture template to obtain picture data;
The data acquisition module is used for analyzing the file signal if the screen-throwing signal is the file signal to obtain keywords contained in the screen-throwing signal; searching the keywords in a database to obtain data files corresponding to the keywords; acquiring picture data in the data file; the database is pre-stored with a plurality of data files to be screened;
the data coding module is used for coding the picture data based on the screen throwing signal to generate live stream data;
and the screen projection module is used for transmitting the live broadcast stream data to the screen projection equipment corresponding to the screen projection equipment identifier, so that the screen projection equipment decodes the live broadcast stream data to obtain a screen projection screen, and projects the screen projection screen.
7. A storage medium, characterized by: the storage medium has stored therein computer readable instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of the localization-based device screening method of any one of claims 1 to 5.
8. A computer device, comprising: one or more processors, and memory;
Stored in the memory are computer readable instructions which, when executed by the one or more processors, perform the steps of the localization-based device screening method of any one of claims 1 to 5.
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