CN118488259A - Data screen projection method, device, computer equipment and computer readable storage medium - Google Patents
Data screen projection method, device, computer equipment and computer readable storage medium Download PDFInfo
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Abstract
The application relates to the field of artificial intelligence, and particularly discloses a data screen projection method, a data screen projection device, computer equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: acquiring a plurality of screen source devices which are accessed in a wireless mode at present; determining the number of the selected first source devices in response to the selection operation of the screen-throwing source devices; determining corresponding audio and video transmission parameters according to the number of the first source devices and the current calculation power parameters of the screen throwing device; and sending the audio and video transmission parameters to the first source equipment so as to instruct the first source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters. By adopting the method, a plurality of screen-throwing source devices can be simultaneously connected, the screen throwing of the plurality of devices is supported, the connection state of the screen-throwing source devices and the screen-throwing devices is not required to be changed, different first source devices can be selected for screen throwing, and the screen throwing efficiency is greatly improved.
Description
Technical Field
The present application relates to the field of artificial intelligence technology, and in particular, to a data screen projection method, apparatus, computer device, computer readable storage medium and computer program product.
Background
In the existing conference scene, conference participants are generally required to carry terminal equipment such as computers, mobile phones or tablets to participate. When meeting participants need to speak, the computer of the meeting participants and the screen throwing equipment of the meeting room can be connected through a high-definition multimedia interface line (High Definition Multimedia Interface, HDMI line for short) so as to transmit information displayed on the computer to the screen throwing equipment for display.
However, when the high-definition multimedia interface line is adopted to realize the screen-throwing data transmission method under the condition that a plurality of conference participants need to speak or discuss the problems in turn, the high-definition multimedia interface line needs to be frequently plugged to replace a computer connected with the screen-throwing equipment. The operation is complicated, and the screen throwing efficiency is easy to reduce. Therefore, how to effectively improve the screen-throwing efficiency in the scene of multi-ginseng meeting is a problem to be solved.
Disclosure of Invention
In view of the foregoing, it is desirable to provide an efficient data screening method, apparatus, computer device, computer readable storage medium, and computer program product.
In a first aspect, the present application provides a data screen projection method, including:
Acquiring a plurality of screen source devices which are accessed in a wireless mode at present;
determining the number of the selected first source devices in response to the selection operation of the screen-throwing source devices;
determining corresponding audio and video transmission parameters according to the number of the first source devices and the current calculation power parameters of the screen throwing device;
And sending the audio and video transmission parameters to the first source equipment so as to instruct the first source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
In one embodiment, the acquiring the plurality of screen source devices that are currently accessed in a wireless manner includes:
Receiving point-to-point connection requests sent by a plurality of devices to be accessed, wherein the point-to-point connection requests are triggered by at least one mode of code scanning triggering, verification code triggering, near field communication connection triggering, device searching triggering or invitation receiving triggering;
Establishing point-to-point connection between the screen throwing device and each device to be accessed, and reading an Internet protocol address and a port number of each device to be accessed through the point-to-point connection;
establishing transmission control protocol connection between the screen throwing equipment and each equipment to be accessed by utilizing the Internet protocol address and the port number and carrying out screen throwing parameter negotiation;
and taking the equipment to be accessed with the parameter negotiation as the screen-throwing source equipment.
In one embodiment, the method further comprises:
Detecting an operation instruction corresponding to the first source device;
Transmitting control information corresponding to the operation instruction to the first source equipment through the transmission control protocol connection so as to instruct the first source equipment to execute data operation corresponding to the operation instruction;
And receiving an execution result corresponding to the data operation returned by the first source equipment.
In one embodiment, the operation instructions include recording instructions;
The sending, by the tcp connection, control information corresponding to the operation instruction to the first source device, so as to instruct the first source device to execute a data operation corresponding to the operation instruction, and receiving an execution result returned by the first source device and corresponding to the data operation, where the method includes:
Transmitting control information corresponding to the recording instruction to the first source equipment through the transmission control protocol connection so as to instruct the first source equipment to execute recording operation on the screen-casting data;
and receiving a recording result corresponding to the screen projection data, which is sent by the first source equipment according to a real-time transmission protocol.
In one embodiment, the method further comprises:
Establishing user datagram protocol connection between the screen throwing equipment and each screen throwing source equipment by utilizing the Internet protocol address and the port number;
and transmitting the audio and video stream data sent by each screen-throwing source device according to the negotiated screen-throwing parameters to the screen-throwing device through the user datagram protocol connection.
In one embodiment, the method further comprises:
Determining a corresponding second source device in response to a switching operation on the first source device;
And sending the audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
In a second aspect, the present application further provides a data screen projection device, including:
the device acquisition module is used for acquiring a plurality of screen source devices which are accessed in a wireless mode at present;
the device selection module is used for responding to the selection operation of the screen projection source devices and determining the number of the selected first source devices;
the parameter determining module is used for determining corresponding audio and video transmission parameters according to the number of the first source devices and the current computing power parameters of the screen throwing device;
the equipment screen-throwing module is used for sending the audio and video transmission parameters to the first source equipment so as to instruct the first source equipment to send corresponding screen-throwing data to the screen-throwing equipment for display according to the audio and video transmission parameters.
In a third aspect, the present application also provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor may implement the steps of the data projection method described in any one of the embodiments of the first aspect when executing the computer program.
In a fourth aspect, the present application also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the data projection method described in any of the embodiments of the first aspect.
In a fifth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of the data projection method described in any of the embodiments of the first aspect.
According to the data screen-throwing method, the device, the computer equipment, the computer readable storage medium and the computer program product, the plurality of screen-throwing source equipment which is accessed in a wireless mode at present are obtained, the number of the selected first source equipment is determined in response to the selection operation of the screen-throwing source equipment, corresponding audio and video transmission parameters are determined according to the number of the first source equipment and the current calculation force parameters of the screen-throwing equipment, the audio and video transmission parameters are sent to the first source equipment, so that the first source equipment is instructed to send corresponding screen-throwing data to the screen-throwing equipment for display according to the audio and video transmission parameters, a plurality of screen-throwing source equipment can be accessed at the same time, the screen throwing of multiple equipment is supported, different first source equipment can be selected for screen throwing without changing the connection state of the screen-throwing source equipment and the screen-throwing equipment, and the screen throwing efficiency is greatly improved. In addition, by adopting the data screen projection method, the audio and video transmission parameters for transmitting the screen projection data are determined by utilizing the number of the first source devices and the current calculation force parameters of the screen projection devices, so that the audio and video transmission parameters can be flexibly adjusted based on the number of the first source devices needing to be projected under the condition that the calculation force of the screen projection devices is limited, and the calculation force utilization rate of the screen projection devices is effectively improved.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are needed in the description of the embodiments of the present application or the related technologies will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other related drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
FIG. 1 is an application environment diagram of a data screening method in one embodiment;
FIG. 2 is a flow chart of a method of data screening in one embodiment;
FIG. 3 is a flow chart of an access procedure of a projection source device in one embodiment;
FIG. 4 is a flow chart illustrating a first source device control procedure in one embodiment;
FIG. 5 is a flow chart of a method for data screening in another embodiment;
FIG. 6 is an application architecture diagram of a data projection method in one embodiment;
FIG. 7 is a block diagram of a data projection device 700 in one embodiment;
fig. 8 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application. It should be noted that, in the embodiments of the present application, some existing solutions in the industry such as software, group, model, etc. may be mentioned, and they should be regarded as exemplary only for illustrating the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or must not use the solution.
It should be noted that, the user information (including but not limited to user equipment information, user personal information, etc.) and the data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present application are both information and data authorized by the user or sufficiently authorized by each party, and the collection, use and processing of the related data are required to meet the related regulations. The technical scheme of the application obtains, stores, uses, processes and the like the data, which all meet the relevant regulations of national laws and regulations.
The data screen projection method provided by the embodiment of the application can be applied to an application environment shown in figure 1. Wherein the number of projection source devices 102 may include a plurality. The screen-casting source device 102 and the screen-casting device 104 may communicate by way of wireless local area network, near field communication, bluetooth, etc. Specifically, the screen-casting device 104 may obtain a plurality of screen-casting source devices 102 that are currently accessed in a wireless manner; determining the number of the selected first source devices in response to a selection operation of the plurality of screen-throwing source devices 102; determining corresponding audio and video transmission parameters according to the number of the first source devices and the current calculation power parameters of the screen throwing device 104; the audio and video transmission parameters are sent to the first source device, so that the first source device is instructed to send corresponding screen projection data to the screen projection device 104 for display according to the audio and video transmission parameters.
The projection source device 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, internet of things devices and portable wearable devices, and the internet of things devices may be smart speakers, smart televisions, smart vehicle devices, projection devices, and the like. The portable wearable device may be a smart watch, smart bracelet, headset, or the like. The head-mounted device may be a Virtual Reality (VR) device, an augmented Reality (Augmented Reality, AR) device, smart glasses, or the like. The screen-casting device 104 may be an electronic display screen, touch screen, projector, or the like.
In an exemplary embodiment, as shown in fig. 2, a data screen projection method is provided, and an example of application of the method to the screen projection device 104 in fig. 1 is described, which includes the following steps S202 to S208. Wherein:
Step S202, a plurality of screen source devices which are accessed in a wireless mode at present are obtained.
The wireless manner may include, but is not limited to, a manner of connecting with a wireless local area network, a manner of connecting with bluetooth, a manner of connecting with radio frequency identification, and the like.
The projection source device may be used to represent a device that provides audio-visual streaming data.
For example, the screen projection device may establish a data communication connection with the screen projection source device within a preset range after starting operation. And responding to a data screen-throwing request triggered by a user on the screen-throwing device, or responding to the screen-throwing request sent by the screen-throwing source device, and acquiring a plurality of screen-throwing source devices which are accessed in a wireless mode at present.
Step S204, responding to the selection operation of the screen throwing source equipment, and determining the number of the selected first source equipment.
Illustratively, the screen-casting device may present the list of screen-casting source devices currently accessed to the user through the front-end component. And responding to the selection operation of the user on the screen-throwing source device list, and determining the screen-throwing source device selected by the user as the first source device. The number of first source devices selected is recorded. The selection operation may be implemented by any one of clicking, voice recognition, motion recognition, information input, and the like.
Step S206, corresponding audio and video transmission parameters are determined according to the number of the first source devices and the current calculation force parameters of the screen throwing device.
The calculation force parameter may be determined based on performance parameters such as a processor speed, the number of processors, and a storage remaining space of the screen projection device.
The audio/video transmission parameters may include, but are not limited to, any one or more of transmission rate, resolution, frame rate, etc. of the audio/video stream.
For example, transmission parameter determination logic may be pre-stored in the projection device. The screen-throwing device can adopt transmission parameter determining logic to process the number of the first source devices currently selected by the user and the current calculation power parameters of the screen-throwing device, and determine audio and video transmission parameters which can enable the screen-throwing device to achieve the best performance (such as the fastest transmission efficiency or the highest audio and video stream transmission quality) under the current screen-throwing scene. Optionally, in some embodiments, the transmission parameter determination logic may include, but is not limited to: comparing the number of the first source devices with a preset number threshold, comparing the calculated force parameters with a preset parameter threshold, and determining corresponding audio/video transmission parameters from the mapping relation of the comparison result and the audio/video transmission parameters; or determining a required screen projection calculation force value according to the number of the first source devices, and determining corresponding audio and video transmission parameters according to a comparison result of the screen projection calculation force value and the calculation force parameter; or substituting the number of the first source devices and the calculation force parameters into a preset formula model, and outputting corresponding audio and video transmission parameters.
Step S208, the audio and video transmission parameters are sent to the first source equipment, so that the first source equipment is instructed to send corresponding screen projection data to the screen projection equipment for display according to the audio and video transmission parameters.
The screen throwing device may send the currently determined audio and video transmission parameters to the first source device, so as to instruct the first source device to perform processing such as encoding, compression, encapsulation, and the like on audio and video stream data being displayed in the current self screen according to the audio and video transmission parameters, and send the screen throwing data obtained after the processing to the screen throwing device for display.
According to the data screen-throwing method, the plurality of screen-throwing source devices which are accessed in a wireless mode at present are obtained, the number of the selected first source devices is determined in response to the selection operation of the screen-throwing source devices, corresponding audio and video transmission parameters are determined according to the number of the first source devices and the current calculation force parameters of the screen-throwing devices, the audio and video transmission parameters are sent to the first source devices, the first source devices are instructed to send corresponding screen-throwing data to the screen-throwing devices according to the audio and video transmission parameters for display, a plurality of screen-throwing source devices can be accessed simultaneously, multiple screen-throwing devices are supported, different first source devices can be selected for screen-throwing without changing the connection states of the screen-throwing source devices and the screen-throwing devices, and the screen-throwing efficiency is greatly improved. In addition, by adopting the data screen projection method in the embodiment, the audio and video transmission parameters for transmitting the screen projection data are determined by using the number of the first source devices and the current calculation force parameters of the screen projection devices, so that the audio and video transmission parameters can be flexibly adjusted based on the number of the first source devices needing to project the screen under the condition that the calculation force of the screen projection devices is limited, and the calculation force utilization rate of the screen projection devices is effectively improved.
In an exemplary embodiment, as shown in fig. 3, step S202 includes steps S302 to S308. Wherein:
In step S302, a point-to-point connection request sent by a plurality of devices to be accessed is received, where the point-to-point connection request is triggered by at least one of a scan code trigger, a verification code trigger, a near field communication connection trigger, a device search trigger, or an invitation receiving trigger.
Optionally, in some embodiments, the device to be accessed may trigger a point-to-point connection request with the screen-throwing device by scanning a two-dimensional code or bar code corresponding to the screen-throwing device.
Or in other embodiments, the device to be accessed can also fill in the verification code corresponding to the screen throwing device through manual input, voice input or action input and the like, so as to trigger the point-to-point connection request of the screen throwing device.
Or in other embodiments, the device to be accessed and the screen-casting device may turn on the near field communication connection function at runtime. When the equipment to be accessed enters the near field connection range of the screen throwing equipment, triggering a point-to-point connection request of the screen throwing equipment.
Or in other embodiments the device to be accessed may automatically transmit the broadcast. When the broadcast of the device to be accessed is searched by the screen throwing device, a point-to-point connection request with the screen throwing device is triggered.
Or in other embodiments, the device to be accessed may also trigger a point-to-point connection request with the screen-throwing device in response to a receiving operation of the connection invitation sent by the screen-throwing device.
Step S304, establishing point-to-point connection between the screen throwing device and each device to be accessed, and reading the Internet protocol address and the port number of each device to be accessed through the point-to-point connection.
Among them, the Point-to-Point connection, i.e., wiFi P2P connection, is a connection manner that can perform one-to-one or one-to-many communication without using a local area network or an Access Point (AP for short). The point-to-point connection can realize the noninductive connection between the devices without any setting, installing software and being limited by network speed or network signals.
Illustratively, a wireless display module (WIFI DISPLAY, WFD for short) may be installed in the projection device. The screen throwing device can interact with a screen throwing daemon (WiFiD) of each device to be accessed through running a wireless display module, so that point-to-point connection between the screen throwing device and each device to be accessed is established. The internet protocol address (Internet Protocol Address, IP address for short) and port number (port) of each device to be accessed are read over a point-to-point connection.
Step S306, using the Internet protocol address and port number to establish the transmission control protocol connection between the screen-throwing device and each device to be accessed and to carry out the screen-throwing parameter negotiation.
And step 308, taking the device to be accessed with the parameter negotiation as the screen-throwing source device.
Among them, the transmission control protocol Transmission Control Protocol, i.e. the TCP protocol.
The projection parameters may include, but are not limited to, resolution, code rate, etc.
For example, the screen-throwing device may send a data packet carrying a synchronization sequence number (Synchronize Sequence Numbers, abbreviated as SYN) by using the internet protocol address and the port number of the device to be accessed as a destination address. And receiving a data packet which is returned from the internet protocol address and the port number of the device to be accessed and carries a synchronous sequence number and an acknowledgement character (Acknowledge character, ACK for short). And sending a data packet carrying a confirmation character and the screen throwing parameters to be negotiated by using the Internet protocol address and the port number of the equipment to be accessed as a destination address so as to instruct the equipment to be accessed to carry out data communication according to the screen throwing parameters. Thereby establishing a transmission control protocol connection between the screen throwing device and each device to be accessed. And taking the equipment to be accessed after the parameter negotiation is completed as screen-throwing source equipment corresponding to the screen-throwing equipment.
In this embodiment, the screen-throwing source device corresponding to the screen-throwing device is determined by adopting a point-to-point connection manner, and the screen-throwing parameter negotiation is performed by using the transmission control protocol connection, so that the connection efficiency and the connection stability of the screen-throwing source device and the screen-throwing device can be improved in an environment with low network signal strength and slow network transmission rate compared with the data screen-throwing manner realized by using only the wireless network connection in the prior art.
In an exemplary embodiment, as shown in fig. 4, the data screen projection method provided in the present application may further include the following steps S402 to S406. Wherein:
step S402, detecting an operation instruction corresponding to the first source device.
The screen throwing device can detect and obtain an operation instruction corresponding to the first source device, which is triggered by the user on the screen throwing device, through voice recognition, action detection, input device information reading and other modes. For example, when the screen-drop device detects a user's voice, a voice recognition may be performed on a password spoken by the user, thereby determining a corresponding operation instruction. Or when the screen throwing device detects the clicking or pressing action of a user on a control, an instruction corresponding to the control triggered by the current action can be adopted as an operation instruction. Or when the screen throwing device reads that the device name of the first source device and the operation to be executed are input in the input device by the user, the operation instruction corresponding to the first source device can be determined.
Step S404, control information corresponding to the operation instruction is sent to the first source device through the transmission control protocol connection, so as to instruct the first source device to execute the data operation corresponding to the operation instruction.
Step S406, receiving an execution result corresponding to the data operation returned by the first source device.
For example, control information corresponding to the operation instruction may be stored in the screen projection device. Through the transmission control protocol connection with the first source device, control information corresponding to the operation instruction can be sent to the corresponding first source device, so that the first source device receiving the control information is instructed to execute data operation corresponding to the operation instruction, and an execution result corresponding to the data operation is returned.
In this embodiment, by detecting an operation instruction corresponding to the first source device triggered by the user on the screen-throwing device, control information corresponding to the operation instruction is sent to the first source device by using a transmission control protocol connection between the screen-throwing device and the first source device, so that reverse control on the first source device can be realized from the screen-throwing device end, and flexibility of data screen-throwing is improved.
In one exemplary embodiment, the operational instructions may include, but are not limited to, recording instructions.
The above steps S404 to S406 may also be implemented by:
transmitting control information corresponding to the recording instruction to the first source equipment through the transmission control protocol connection so as to instruct the first source equipment to execute recording operation on screen throwing data; and receiving a recording result corresponding to the screen projection data, which is sent by the first source equipment according to the real-time transmission protocol.
Wherein, the real-time transport Protocol, i.e. REAL TIME STREAMING Protocol, is called RTSP for short.
Optionally, in some embodiments, when the screen device detects that the user clicks the record key corresponding to the first source device, the instruction corresponding to the first source device may be determined to be a record instruction. Or in other embodiments, when the screen-drop device detects that the user speaks the password of "record" and "first source device", the instruction corresponding to the first source device may be determined to be a record instruction.
Optionally, in some embodiments, the screening device may create a transmission control protocol connection with the device to be accessed using a real-time streaming protocol session (RTSP seesion). The screen projection device may send control information corresponding to the recording instruction to the first source device through a transmission control protocol connection with the first source device, so as to instruct the first source device to execute a recording operation corresponding to the recording instruction: and recording the screen throwing data currently displayed on the screen of the user.
Optionally, in some embodiments, the screen capturing device may receive, in real time, a recording result corresponding to the screen capturing data sent by the first source device according to the real-time transmission protocol. Or in other embodiments, the screen-throwing device may also receive the recording result sent by the first source device after the screen throwing of the first source device is finished.
Optionally, in some embodiments, when the first source device performs the recording operation, the voice uttered by the user and the screen-casting data displayed in the own screen may be recorded in the same audio/video file at the same time.
In this embodiment, by reversely controlling the first source device by the screen-throwing device to record the screen-throwing and receiving the recording result returned by the first source device, compared with the technical means that each screen-throwing source device needs to record the screen-throwing data by itself and then uniformly return the screen-throwing data to the screen-throwing device for summarizing in the conventional technology, the technical effect of uniformly and cooperatively managing the screen-throwing source devices can be achieved by solving the dispersion of the screen-throwing source devices.
In an exemplary embodiment, the data screen projection method provided in the present application may further include:
establishing user datagram protocol connection between the screen throwing equipment and each screen throwing source equipment by utilizing an Internet protocol address and a port number; and transmitting the audio and video stream data sent by each screen throwing source device according to the negotiated screen throwing parameters to the screen throwing device through the user datagram protocol connection.
The user datagram protocol connection, that is User Datagram Protocol, is called UDP connection for short.
The screen-throwing device may also establish a user datagram protocol connection between the screen-throwing device and each screen-throwing source device using the internet protocol address and the port number of the screen-throwing source device, for example, after the screen-throwing parameter negotiation is completed. The subsequent screen throwing equipment can be connected with the screen throwing source equipment through a user datagram protocol to carry out data transmission so as to transmit the audio and video stream data sent by each screen throwing source equipment according to the negotiated screen throwing parameters to the screen throwing equipment. For example, the screen-casting device may receive, through the user datagram protocol connection, a corresponding execution result returned by the first source device after sending control information to the first source device through the transmission control protocol connection.
In this embodiment, audio and video transmission is performed by establishing a user datagram protocol connection, so that the data screen-throwing efficiency can be improved.
In an exemplary embodiment, the data screen projection method provided by the application further includes:
Determining a corresponding second source device in response to a switching operation to the first source device; and sending the audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
For example, the screen-casting device may determine that the user selects the second source device for replacing the first source device in response to a switching operation of the user on the first source device that is currently casting the screen. And sending the original audio and video transmission parameters sent to the first source equipment to the second source equipment so as to instruct the second source equipment to send the screen throwing data displayed on the screen of the second source equipment to the screen throwing equipment for display according to the current audio and video transmission parameters.
Alternatively, in some embodiments, the switching operation may be detected by the screen-throwing device through voice recognition, motion detection, or reading of input device information.
Optionally, in some embodiments, the screen-casting device may also present the selectable screen-casting source device to the user in response to a switching operation. And based on the selection operation of the user on the currently displayed screen projection source equipment, taking the selected screen projection source equipment as the corresponding second source equipment.
Optionally, in some embodiments, after determining the second source device, the screen device may recalculate the new audio/video transmission parameter according to the current computing power parameter and the number of second source devices. And sending the new audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send the screen throwing data to the screen throwing equipment according to the new audio and video transmission parameters.
In the embodiment, the user is supported to select and switch the equipment of the screen-throwing source end at the screen-throwing equipment end, so that the original connection state of the screen-throwing equipment and the screen-throwing source equipment is not required to be changed, and the flexibility of equipment switching can be improved.
In an exemplary embodiment, as shown in fig. 5, the data screen projection method provided by the present application may include the following steps S502 to S516. Wherein:
In step S502, a point-to-point connection request sent by a plurality of devices to be accessed is received, where the point-to-point connection request is triggered by at least one of a scan code trigger, a verification code trigger, a near field communication connection trigger, a device search trigger, or an invitation receiving trigger.
Optionally, in some embodiments, as shown in fig. 6, an application architecture diagram of a data screen projection method in this embodiment is provided, including a kernel layer, a system service layer, an interface layer, and an application layer.
The device to be accessed may trigger the screen casting daemon (WiFiD) module 602 of the system service layer to interact with the network connection component (wpa_supplicant) 604 by at least one operation mode of scanning a code, inputting an authentication code, starting a near field communication connection function, approaching the screen casting device, sending a self device broadcast to a preset range, or receiving an invitation of the screen casting device. Since the network connection component (wpa_supplicant) 604 is implemented based on the communication protocol of the kernel-layer WiFi wireless network, a point-to-point (WiFi P2P) connection request may be sent. The device to be accessed may send a point-to-point (WiFi P2P) connection request generated by the network connection component (wpa_supplicant) 604 to a wireless display (WIFI DISPLAY, WFD) module 622 of the screen-throwing device at a system service layer through a screen-throwing daemon (WiFiD) module 602.
In step S504, a point-to-point connection between the screen-throwing device and each device to be accessed is established, and the internet protocol address and the port number of each device to be accessed are read through the point-to-point connection.
Optionally, in some embodiments, the screen-casting device may establish a point-to-point connection with each device to be accessed, interact with the screen-casting daemon (WiFiD) module 602 of the device to be accessed through the wireless display (WFD) module 622 of the system service layer to instruct the screen-casting daemon (WiFiD) module 602 to read the internet protocol address IP and the Port number Port stored in the kernel layer of the device to be accessed from the dynamic host configuration protocol (Dynamic Host Configuration Protocol, abbreviated as DHCP) component 606 and return to the wireless display (WFD) module 622.
Step S506, using the Internet protocol address and port number to establish the transmission control protocol connection between the screen-throwing device and each device to be accessed, and carrying out screen-throwing parameter negotiation, and taking the device to be accessed after the parameter negotiation as the screen-throwing source device.
Step S508, establish the user datagram protocol connection between the screen throwing device and each screen throwing source device by using the Internet protocol address and the port number.
Step S510, transmitting the audio and video stream data sent by each screen throwing source device according to the negotiated screen throwing parameters to the screen throwing device through the user datagram protocol connection.
Illustratively, the screen-casting device may establish a transmission control protocol (Transmission Control Protocol, abbreviated as TCP) connection with the internet protocol address and the port number of the device to be accessed for screen-casting parameter negotiation. And taking the device to be accessed after the parameter negotiation is completed as the screen-throwing source device. A user datagram protocol (User Datagram Protocol, UDP) connection is established using the internet protocol address and port number of the device to be accessed. And receiving audio and video stream data sent by each screen throwing source device according to the negotiated screen throwing parameters through a User Datagram Protocol (UDP).
Step S512, in response to the selection operation of the screen-throwing source device, determining the number of the selected first source devices, and determining corresponding audio/video transmission parameters according to the number of the first source devices and the current computing power parameters of the screen-throwing device.
Optionally, in some embodiments, the screen-throwing device may provide, through a PLAY Interface (streaming media PLAY Interface) 624 of the Interface layer, to a screen-throwing end User Interface (UI) module 626 of the application layer, the screen-throwing data sent by the current screen-throwing source device through a User datagram protocol connection (UDP) for presentation. The screen-throwing data may be audio/video stream data displayed or played by the screen-throwing source device on a User Interface (UI) module 608 presented by the application layer.
The screen-casting device may determine the selected screen-casting source device as the first source device in response to a user selection operation of the screen-casting source user interface module 608 of the browsed screen-casting source device in the screen-casting user interface module 626. And determining corresponding audio and video transmission parameters according to the number of the first source devices selected currently and the current calculation force parameters of the screen throwing device.
Step S514, the audio and video transmission parameters are sent to the first source device through the transmission control protocol connection, so as to instruct the first source device to send corresponding screen projection data to the screen projection device for display according to the audio and video transmission parameters through the user datagram protocol connection.
Optionally, in some embodiments, the screen throwing device may send the audio/video transmission parameters to the first source device through a transmission control Protocol connection (TCP), so as to instruct the first source device to replace the original negotiated screen throwing parameters with the currently received audio/video transmission parameters, send, through a user datagram Protocol connection (UDP), the screen throwing data matched with the audio/video transmission parameters sent according to a real-time transmission Protocol (REAL TIME STREAMING Protocol, abbreviated as RTSP) to the screen throwing device, and display the screen throwing data at a screen throwing end user interface module 626 of the screen throwing device.
Step S516, detecting a recording instruction, sending control information corresponding to the recording instruction to the first source device through a transmission control protocol connection, and receiving a recording result corresponding to the screen-throwing data, sent by the first source device according to a real-time transmission protocol, through a user datagram protocol connection.
Optionally, in some embodiments, the screen-casting device may detect a recording instruction corresponding to the first source device triggered by the user on the screen-casting end user interface module 626. The wireless display (WFD) module 622 of the system service layer sends control information corresponding to the recording instruction to the Screen source Screen recording (Record Screen) module 610 of the first source device through a transmission control protocol connection (TCP), so as to instruct the Screen source Screen recording module 610 of the first source device to perform a recording operation corresponding to the recording instruction: recording the screen-casting data according to a real-time transfer protocol (RTSP) by using a recording interface 612 (streaming Record interface) of the interface layer, and generating a corresponding recording result. And receiving a recording result corresponding to the screen throwing data, which is sent by the first source equipment according to a real-time transmission protocol (RTSP), through a user datagram protocol connection (UDP).
Optionally, in other embodiments, the screen-casting device may also detect a user's switching operation to the first source device through the screen-casting end user interface module 626. And responding to the switching operation of the first source equipment, determining a corresponding second source equipment, and sending the audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
Alternatively, in some embodiments, the screen-casting device may support 1-16 on-screen presentations of the screen-casting source devices simultaneously. The multi-screen interactive UI function may be implemented through the screen-cast source user interface module 608 and the screen-cast user interface module 626 of the application layer. The recording interface 612 and the playing interface 624 through the interface layer serve as streaming interfaces. The multi-screen interactive service is provided through a screen casting daemon (WiFiD) module 602, a screen casting source-side screen recording module 610, and a wireless display (WFD) module 622 of the system service layer.
In this embodiment, the screen-throwing source device is connected to the screen-throwing device through the point-to-point WiFi P2P connection, and no additional modification of system settings or additional installation of software is required, and the screen-throwing source device and the screen-throwing device are not affected by network speed or network strength, so that the noninductive connection between the screen-throwing source device and the screen-throwing device can be realized, and the connection efficiency between the screen-throwing source device and the screen-throwing device and the stability of the data screen-throwing method are improved. By detecting an operation instruction triggered by a user on a user interface module of the screen throwing device, reverse control of the screen throwing source device is realized, flexibility of data screen throwing can be improved, and unified management of a plurality of scattered screen throwing source devices is realized. According to the computing power parameters of the screen throwing equipment and the number of screen throwing source equipment selected by a user, the audio and video stream transmission parameters for the screen throwing are calculated, the utilization rate of the screen throwing equipment can be improved, and the screen throwing efficiency and the screen throwing quality of data are guaranteed. By responding to the switching operation of the first source equipment and selecting the new second source equipment as the current screen-throwing source equipment, the connection state of the screen-throwing source equipment and the screen-throwing equipment can be not required to be changed, the free switching of the screen-throwing source end is realized, and the flexibility of data screen throwing is improved.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.
Based on the same inventive concept, the embodiment of the application also provides a data screen projection device for realizing the above related data screen projection method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the data projection device or devices provided below may be referred to the limitation of the data projection method hereinabove, and will not be described herein.
In an exemplary embodiment, as shown in fig. 7, there is provided a data projection device 700, including: a device acquisition module 702, a device selection module 704, a parameter determination module 706, and a device screen projection module 708, wherein:
A device acquisition module 702, configured to acquire a plurality of screen source devices that are currently accessed in a wireless manner;
A device selection module 704, configured to determine, in response to a selection operation of the screen-throwing source device, the number of first source devices that are selected;
the parameter determining module 706 is configured to determine corresponding audio/video transmission parameters according to the number of the first source devices and a current computing power parameter of the screen throwing device;
The device screen projection module 708 is configured to send the audio/video transmission parameters to the first source device, so as to instruct the first source device to send corresponding screen projection data to the screen projection device for display according to the audio/video transmission parameters.
In one exemplary embodiment, the device acquisition module 702 includes: the request receiving unit is used for receiving point-to-point connection requests sent by a plurality of devices to be accessed, wherein the point-to-point connection requests are triggered by at least one mode of code scanning triggering, verification code triggering, near field communication connection triggering, device searching triggering or invitation receiving triggering; the connection establishment unit is used for establishing point-to-point connection between the screen throwing device and each device to be accessed, and reading the Internet protocol address and the port number of each device to be accessed through the point-to-point connection; the parameter protocol unit is used for establishing transmission control protocol connection between the screen throwing equipment and each equipment to be accessed by utilizing the Internet protocol address and the port number and carrying out screen throwing parameter negotiation; and the device access unit is used for taking the device to be accessed after the parameter negotiation is completed as the screen-throwing source device.
In an exemplary embodiment, the data projection device 700 further includes:
An equipment control module; the device control module includes: an instruction detection unit, configured to detect an operation instruction corresponding to a first source device; an information sending unit, configured to send control information corresponding to an operation instruction to a first source device through a transmission control protocol connection, so as to instruct the first source device to execute a data operation corresponding to the operation instruction; and the result receiving unit is used for receiving an execution result corresponding to the data operation returned by the first source equipment.
In one exemplary embodiment, the operational instructions include recording instructions; the information sending unit is also used for sending control information corresponding to the recording instruction to the first source equipment through the transmission control protocol connection so as to instruct the first source equipment to execute the recording operation of the screen throwing data; the result receiving unit is further used for receiving a recording result corresponding to the screen projection data, which is sent by the first source device according to the real-time transmission protocol.
In an exemplary embodiment, the data projection device 700 further includes: the datagram connection module is used for establishing user datagram protocol connection between the screen throwing equipment and each screen throwing source equipment by utilizing the Internet protocol address and the port number; and the datagram transmission module is used for transmitting the audio and video stream data sent by each screen-throwing source device according to the negotiated screen-throwing parameters to the screen-throwing device through user datagram protocol connection.
In an exemplary embodiment, the data projection device 700 further includes: the device switching module is used for responding to the switching operation of the first source device and determining a corresponding second source device; and sending the audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
The modules in the data projection device 700 may be implemented in whole or in part by software, hardware, or a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In an exemplary embodiment, a computer device, which may be a terminal, is provided, and an internal structure thereof may be as shown in fig. 8. The computer device includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input means. The processor, the memory and the input/output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input/output interface. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input/output interface of the computer device is used to exchange information between the processor and the external device. The Communication interface of the computer device is used for communicating with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WiFi, a mobile cellular network, near field Communication (NEAR FIELD Communication, NFC) or other technologies. The computer program is executed by a processor to implement a data projection method. The display unit of the computer device is used for forming a visual picture, and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be a key, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in FIG. 8 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.
In an exemplary embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor performing the steps of the method embodiments described above when the computer program is executed.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the method embodiments described above.
In an embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the steps of the method embodiments described above.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in embodiments provided herein may include at least one of non-volatile memory and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (RESISTIVE RANDOM ACCESS MEMORY, reRAM), magneto-resistive Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (PHASE CHANGE Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in various forms such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), etc. The databases referred to in the embodiments provided herein may include at least one of a relational database and a non-relational database. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processor referred to in the embodiments provided in the present application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computation, an artificial intelligence (ARTIFICIAL INTELLIGENCE, AI) processor, or the like, but is not limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the present application.
The foregoing examples illustrate only a few embodiments of the application and are described in detail herein without thereby limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (15)
1. A method for projecting data, the method comprising:
Acquiring a plurality of screen source devices which are accessed in a wireless mode at present;
determining the number of the selected first source devices in response to the selection operation of the screen-throwing source devices;
determining corresponding audio and video transmission parameters according to the number of the first source devices and the current calculation power parameters of the screen throwing device;
And sending the audio and video transmission parameters to the first source equipment so as to instruct the first source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
2. The method of claim 1, wherein the obtaining a plurality of screen-cast source devices that are currently wirelessly accessed comprises:
Receiving point-to-point connection requests sent by a plurality of devices to be accessed, wherein the point-to-point connection requests are triggered by at least one mode of code scanning triggering, verification code triggering, near field communication connection triggering, device searching triggering or invitation receiving triggering;
Establishing point-to-point connection between the screen throwing device and each device to be accessed, and reading an Internet protocol address and a port number of each device to be accessed through the point-to-point connection;
establishing transmission control protocol connection between the screen throwing equipment and each equipment to be accessed by utilizing the Internet protocol address and the port number and carrying out screen throwing parameter negotiation;
and taking the equipment to be accessed with the parameter negotiation as the screen-throwing source equipment.
3. The method according to claim 2, wherein the method further comprises:
Detecting an operation instruction corresponding to the first source device;
Transmitting control information corresponding to the operation instruction to the first source equipment through the transmission control protocol connection so as to instruct the first source equipment to execute data operation corresponding to the operation instruction;
And receiving an execution result corresponding to the data operation returned by the first source equipment.
4. The method of claim 3, wherein the operational instructions comprise recording instructions;
The sending, by the tcp connection, control information corresponding to the operation instruction to the first source device, so as to instruct the first source device to execute a data operation corresponding to the operation instruction, and receiving an execution result returned by the first source device and corresponding to the data operation, where the method includes:
Transmitting control information corresponding to the recording instruction to the first source equipment through the transmission control protocol connection so as to instruct the first source equipment to execute recording operation on the screen-casting data;
and receiving a recording result corresponding to the screen projection data, which is sent by the first source equipment according to a real-time transmission protocol.
5. The method according to claim 2, wherein the method further comprises:
Establishing user datagram protocol connection between the screen throwing equipment and each screen throwing source equipment by utilizing the Internet protocol address and the port number;
and transmitting the audio and video stream data sent by each screen-throwing source device according to the negotiated screen-throwing parameters to the screen-throwing device through the user datagram protocol connection.
6. The method according to any one of claims 1 to 5, further comprising:
Determining a corresponding second source device in response to a switching operation on the first source device;
And sending the audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
7. A data projection device, the device comprising:
the device acquisition module is used for acquiring a plurality of screen source devices which are accessed in a wireless mode at present;
the device selection module is used for responding to the selection operation of the screen projection source devices and determining the number of the selected first source devices;
the parameter determining module is used for determining corresponding audio and video transmission parameters according to the number of the first source devices and the current computing power parameters of the screen throwing device;
the equipment screen-throwing module is used for sending the audio and video transmission parameters to the first source equipment so as to instruct the first source equipment to send corresponding screen-throwing data to the screen-throwing equipment for display according to the audio and video transmission parameters.
8. The apparatus of claim 7, wherein the device acquisition module comprises:
the request receiving unit is used for receiving point-to-point connection requests sent by a plurality of devices to be accessed, wherein the point-to-point connection requests are triggered by at least one mode of code scanning trigger, verification code trigger, near field communication connection trigger, device searching trigger or invitation receiving trigger;
The connection establishment unit is used for establishing point-to-point connection between the screen throwing device and each device to be accessed, and reading the Internet protocol address and the port number of each device to be accessed through the point-to-point connection;
The parameter protocol unit is used for establishing transmission control protocol connection between the screen throwing equipment and each equipment to be accessed by utilizing the Internet protocol address and the port number and carrying out screen throwing parameter negotiation;
and the device access unit is used for taking the device to be accessed with the parameter negotiation as the screen projection source device.
9. The apparatus of claim 8, wherein the apparatus further comprises:
An equipment control module;
The device control module includes:
An instruction detection unit, configured to detect an operation instruction corresponding to the first source device;
An information sending unit, configured to send control information corresponding to the operation instruction to the first source device through the transmission control protocol connection, so as to instruct the first source device to perform a data operation corresponding to the operation instruction;
And the result receiving unit is used for receiving an execution result corresponding to the data operation returned by the first source equipment.
10. The apparatus of claim 9, wherein the operation instructions comprise recording instructions;
The information sending unit is further configured to send control information corresponding to the recording instruction to the first source device through the transmission control protocol connection, so as to instruct the first source device to perform a recording operation on the screen-casting data;
The result receiving unit is further configured to receive a recording result corresponding to the screen-projection data, where the recording result is sent by the first source device according to a real-time transmission protocol.
11. The apparatus of claim 8, wherein the apparatus further comprises:
the datagram connection module is used for establishing user datagram protocol connection between the screen throwing equipment and each screen throwing source equipment by utilizing the Internet protocol address and the port number;
And the datagram transmission module is used for transmitting the audio and video stream data sent by each screen-throwing source device according to the negotiated screen-throwing parameters to the screen-throwing device through the user datagram protocol connection.
12. The apparatus according to any one of claims 7-11, wherein the apparatus further comprises:
The device switching module is used for responding to the switching operation of the first source device and determining a corresponding second source device; and sending the audio and video transmission parameters to the second source equipment so as to instruct the second source equipment to send corresponding screen throwing data to the screen throwing equipment for display according to the audio and video transmission parameters.
13. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1 to 6 when the computer program is executed.
14. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
15. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
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