CN112929704B - Data transmission method, device, electronic equipment and storage medium - Google Patents

Data transmission method, device, electronic equipment and storage medium Download PDF

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Publication number
CN112929704B
CN112929704B CN202110103256.5A CN202110103256A CN112929704B CN 112929704 B CN112929704 B CN 112929704B CN 202110103256 A CN202110103256 A CN 202110103256A CN 112929704 B CN112929704 B CN 112929704B
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shared
page
acquisition frequency
frequency
network state
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CN112929704A (en
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蒋成军
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Youmi Technology Shenzhen Co ltd
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Youmi Technology Shenzhen Co ltd
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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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
    • H04N21/234381—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
    • 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]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
    • H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
    • 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
    • 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
    • H04N21/440281—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 altering the temporal resolution, e.g. by frame skipping
    • 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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44245—Monitoring the upstream path of the transmission network, e.g. its availability, bandwidth

Abstract

The embodiment of the application discloses a data transmission method, a data transmission device, electronic equipment and a storage medium. The method comprises the following steps: the first equipment acquires the network state of the second equipment; if the network state does not meet the target condition, acquiring a page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared, wherein the preset acquisition frequency is lower than the original acquisition frequency of the first equipment on the page to be shared; encoding the image frames to obtain a data stream to be transmitted; and transmitting the data stream to be transmitted to the second equipment at a designated transmission rate. According to the method, under the condition that the network state of the second equipment does not meet the target condition, the pages to be shared are acquired according to the preset acquisition frequency lower than the original acquisition frequency of the first equipment for acquiring the pages to be shared, so that the image frames with the relatively reduced number can be obtained, and the network transmission pressure can be reduced.

Description

Data transmission method, device, electronic equipment and storage medium
Technical Field
The present disclosure relates to the field of data transmission technologies, and in particular, to a data transmission method, apparatus, electronic device, and storage medium.
Background
With the development of network technology and multimedia technology, remote sharing technology is used by more and more users, and especially in epidemic situation environment, online meeting or remote sharing can ensure life safety of users. When sharing files through the remote sharing technology, if the network environment of the receiving end is poor, transmission jamming may be caused, so that the user viewing experience of the receiving end device is affected.
Disclosure of Invention
In view of the above, the present application proposes a data transmission method, apparatus, electronic device, and storage medium to improve the above-mentioned problems.
In a first aspect, an embodiment of the present application provides a data transmission method, applied to a first device, where the method includes: the first device acquires the network state of the second device; if the network state does not meet the target condition, acquiring a page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared, wherein the preset acquisition frequency is lower than the original acquisition frequency of the first equipment on the page to be shared; encoding the image frames to obtain a data stream to be transmitted; and transmitting the data stream to be transmitted to the second equipment at a designated transmission rate.
In a second aspect, an embodiment of the present application provides a data transmission method, applied to a second device, where the method includes: the second device transmitting a network status to the first device; and receiving a data stream to be transmitted by the first equipment, wherein the data stream to be transmitted is acquired by the first equipment to be shared according to a preset acquisition frequency when the network state does not meet a target condition, an image frame corresponding to the page to be shared is obtained, the image frame is encoded, the data stream to be transmitted is transmitted at a specified transmission rate, and the preset acquisition frequency is lower than the original acquisition frequency of the first equipment to be shared.
In a third aspect, an embodiment of the present application provides a data transmission apparatus, which operates in a first device, where the apparatus includes: the network state acquisition module is used for acquiring the network state of the second device by the first device; the data acquisition module is used for acquiring the page to be shared according to a preset acquisition frequency if the network state does not meet the target condition, so as to obtain an image frame corresponding to the page to be shared, wherein the preset acquisition frequency is lower than the original acquisition frequency of the first equipment on the page to be shared; the coding module is used for coding the image frames to obtain a data stream to be transmitted; and the data transmission module is used for transmitting the data stream to be transmitted to the second equipment at a specified transmission rate.
In a fourth aspect, an embodiment of the present application provides a data transmission apparatus, operating in a second device, where the apparatus includes: a network state transmission unit, configured to transmit a network state to a first device by the second device; the data receiving unit is used for receiving a data stream to be transmitted by the first device, wherein the data stream to be transmitted is acquired by the first device to be shared according to a preset acquisition frequency when the network state does not meet a target condition, an image frame corresponding to the page to be shared is obtained, the image frame is encoded, the data stream to be transmitted is transmitted at a specified transmission rate, and the preset acquisition frequency is lower than the original acquisition frequency of the page to be shared by the first device.
In a fifth aspect, the present application provides an electronic device comprising one or more processors and a memory; one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the method of the first or second aspect described above.
In a sixth aspect, the present application provides a computer readable storage medium having program code stored therein, wherein the method of the first or second aspect is performed when the program code is run.
According to the data transmission method, the device, the electronic equipment and the storage medium, the network state of the second equipment is obtained through the first equipment, then if the network state does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency, the image frame corresponding to the page to be shared is obtained, the preset acquisition frequency is lower than the original acquisition frequency of the first equipment to the page to be shared, the image frame is encoded, the data stream to be transmitted is obtained, and then the data stream to be transmitted is transmitted to the second equipment at the appointed transmission rate. Therefore, under the condition that the network state of the second equipment does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency lower than the original acquisition frequency of the first equipment for acquiring the page to be shared, so that a relatively reduced number of image frames can be obtained, the network transmission pressure can be reduced when the data stream to be transmitted obtained after the image frames are encoded is transmitted, and the user viewing experience of the second equipment is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present application.
Fig. 2 shows a method flow diagram of step S120 in fig. 1 in one embodiment.
Fig. 3 shows a method flow chart of step S120 in fig. 1 in another embodiment.
Fig. 4 is a flowchart of a method for data transmission according to another embodiment of the present application.
Fig. 5 shows a method flowchart of a data transmission method according to another embodiment of the present application.
Fig. 6 shows a block diagram of a data transmission device according to an embodiment of the present application.
Fig. 7 is a block diagram illustrating a data transmission apparatus according to another embodiment of the present application.
Fig. 8 shows a block diagram of an electronic device for performing a data transmission method according to an embodiment of the present application.
Fig. 9 is a storage unit for storing or carrying program code for implementing a data transmission method 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 fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
When the file content is shared through an online conference, the network states of the file content sharing terminal device and the file content receiving terminal device can influence the transmission quality of the file content more or less. In order to improve the quality of file content sharing, the network bandwidth can be increased, and then the network transmission pressure is relieved, so that the transmission quality of the file content is improved.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, an embodiment of the present application provides a data transmission method, which is applicable to a first device, and includes:
step S110: the first device obtains a network state of the second device.
In this embodiment, the first device may be an initiator device for sharing data content, and the second device may be a viewing device for sharing data content. For example, when sharing a PPT document remotely, the device that presents the PPT document is a first device and the device that views the PPT document is a second device. It should be noted that, in some other possible embodiments, the second device may also perform the operation of sharing the data content, where the first device may also perform the operation of receiving the data content sharing, that is, the relationship between the first device and the second device may be relatively converted when the first device performs the data content sharing. The specific type of the data content to be shared may not be limited, and in this embodiment, the data content to be shared may include a plurality of pages to be shared. Optionally, the first device and the second device may be mobile devices, such as a mobile phone, a computer, and a tablet, which have mobile communication functions.
In this way, the first device may send a data content sharing prompt message to the server, where the prompt message may be a conference link, a two-dimensional code, a character string, or a screen transmission code, and the like, and send the data content sharing prompt message to the second device through the server. At this time, the second device may report the network state to the server, or report the network state to the server periodically, where the network state may include data such as a packet loss rate, a network delay, and a network jitter, and the server may send the network state of the second device to the first device, so that the first device may adjust a data transmission manner according to the network state of the second device, so as to avoid that the second device cannot clearly or completely view the shared data content due to network blocking.
As another way, the first device may be connected to the second device through a short-range wireless communication, for example, the first device may be connected to the second device through bluetooth, wiFi, or the like, where a distance between the first device and the second device may be a preset distance, and a value of the preset distance may be 5 meters, 10 meters, or 50 meters, or the like, and a specific value may not be limited. In this way, the first device and the second device perform data interaction of the network state through the server alone, that is, the second device reports the network state to the server, and the first device obtains the network state of the second device from the server, where the network state is a network state of accessing the wide area network (or the public network). The network state of the second equipment is obtained through the server, and data transmission is performed in a short-range wireless communication mode, so that the first equipment can flexibly adjust the mode of transmitting data to the second equipment according to the network state of the second equipment, and the influence on the user watching experience caused by data transmission blocking due to poor network state of the second equipment is avoided.
Step S120: and if the network state does not meet the target condition, acquiring the page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared.
The target condition may include the network delay being below a first threshold, the network jitter being below a second threshold, and/or the packet loss rate being below a third threshold, and the specific values of the first threshold, the second threshold, and the third threshold may not be limited.
In this embodiment, when the network state of the second device is acquired, the first device may determine whether the network state satisfies the target condition, where the network state satisfies at least one of a network delay being lower than a first threshold, a network jitter being lower than a second threshold, and a packet loss rate being lower than a third threshold, and may determine that the network state satisfies the target condition. As a way, if the network state does not meet the target condition, the page to be shared may be acquired according to the predetermined acquisition frequency, and then the image frame corresponding to the page to be shared is obtained. The predetermined acquisition frequency is lower than an original acquisition frequency of the first device for acquiring the page to be shared, for example, the predetermined acquisition frequency may be 1 s/time, and the original acquisition frequency is 500 ms/time. The predetermined acquisition frequency may be understood as the frequency of the screenshot, i.e. the frequency of the interception of the entire image picture (or page) content of the screen of the first electronic device.
The method comprises the steps that original acquisition frequencies corresponding to different pages to be shared are different, as a mode, the content complexity of the pages to be shared can be obtained, the original acquisition frequency corresponding to the pages to be shared is determined according to the content complexity, and further the preset acquisition frequency corresponding to the pages to be shared is determined, wherein the higher the content complexity is, the lower the corresponding original acquisition frequency is, and the lower the corresponding preset acquisition frequency is; the lower the content complexity, the higher the corresponding original acquisition frequency and the higher the corresponding predetermined acquisition frequency. In this embodiment, the content complexity may be measured by the number of words, pictures, videos, and the like included in the page to be shared, for example, the greater the number of words included in the page to be shared, the higher the content complexity.
It should be noted that, the predetermined acquisition frequency in the above case is always lower than the original acquisition frequency corresponding to the current page to be shared, so that the data volume acquired in the unit duration can be reduced by acquiring the current page to be shared at the predetermined acquisition frequency lower than the original acquisition frequency corresponding to the current page to be shared, thereby reducing the network transmission pressure.
It should be noted that, taking the page to be shared as the PPT image as an example, the predetermined acquisition frequency is higher than the page turning frequency between different PPT image pages, that is, the speed of acquiring the page to be shared in the unit time is higher than the speed of switching between different pages to be shared in the unit time, so as to ensure that all the pages to be shared of the data content to be shared can be completely intercepted.
In one embodiment, referring to fig. 2, step S120 may include:
step S121: and if the network state does not meet the target condition, acquiring the content type of the page to be shared.
The content types to which the pages to be shared belong are different, and the corresponding transmission rates can be different. In this embodiment, in order to improve the overall definition of the second device for viewing the data content to be shared, the content type of the page to be shared may be identified when it is determined that the network state of the second device does not meet the target condition. The picture may include a format identifier of ". Jpg", the video may include a format identifier of "WMV", "AVI", etc., and the PPT page may include a format identifier of ". PPT" or ". Pptx", etc., so that the content type of the page to be shared may be determined according to the content format identifier of the page to be shared.
Step S122: and if the content type is the designated type, acquiring the page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared.
In this embodiment, the designated type may be a PPT image/page, and as an implementation manner, if the content type of the page to be shared is identified as a PPT image/page, the page to be shared may be acquired according to a predetermined acquisition frequency, so as to obtain an image frame corresponding to the page to be shared, and further, the data amount of the page to be shared acquired within a unit duration may be reduced, so that the network transmission pressure in the transmission process of the page to be shared may be reduced.
Optionally, if the content type of the page to be shared is not identified as PPT image/page, the acquisition may be paused for a period of time, and if the network state of the second device meets the target condition, the page to be shared is acquired according to the original acquisition frequency of the page to be shared by the first device, or if the network state of the second device is better, the page to be shared may be acquired at an acquisition frequency higher than the original acquisition frequency, so as to increase the data volume of the page to be shared acquired in a unit duration, and further improve the smoothness of the page to be shared viewed by the second device.
It should be noted that the above description of the specific type is only described as an example, and in actual implementation, the specific type may be not only a PPT image/page, but also other data content types, which are not described in detail herein.
In another embodiment, referring to fig. 3, step S120 may include:
step S123: and determining the data receiving rate of the second equipment according to the network state.
The data receiving rate of the second device characterizes the frequency of the second device receiving the page to be shared, and the data receiving rate corresponding to the second device with a better network state may be higher.
Step S124: and if the data receiving rate is lower than a preset threshold, judging that the network state does not meet a target condition, and acquiring the page to be shared according to a preset acquisition frequency to obtain an image frame corresponding to the page to be shared.
The preset threshold is a critical value that the page to be shared can be smoothly transmitted (i.e. no phenomenon of jamming, picture missing, etc.) and the specific numerical value can be set according to actual needs, if the data receiving rate of the second device is lower than the preset threshold, it can be determined that the network state does not meet the target condition, the page to be shared can be acquired according to the preset acquisition frequency, and the image frame corresponding to the page to be shared is obtained.
Step S130: and encoding the image frames to obtain a data stream to be transmitted.
In this embodiment, the obtained image frame may be encoded according to an encoding frequency adapted to a predetermined acquisition frequency, so as to obtain a data stream to be transmitted. For example, the predetermined acquisition frequency may be increased, the corresponding encoding frequency may be increased, and if the predetermined acquisition frequency is decreased, the corresponding encoding frequency may be decreased, and the increased or decreased amplitude is adapted.
Step S140: and transmitting the data stream to be transmitted to the second equipment at a designated transmission rate.
Wherein the designated transmission rate is to transmit only one frame of the key frame data stream within a designated time period, for example, to transmit one frame within 1 second, to transmit one frame within 3 seconds, or to transmit one frame within 5 seconds, etc. Optionally, the number of the second devices may be one or more, and if the number of the second devices is one, the data stream to be transmitted may be transmitted to the second devices according to a fixed transmission rate; if the number of the second devices is multiple, if the network states of the multiple second devices are different, the data stream to be transmitted can be transmitted to the corresponding second devices at the specified transmission rates corresponding to the multiple second devices, the specified transmission rates corresponding to the second devices in different network states are different, and the better the network state is, the higher the corresponding specified transmission rate is, the weaker the network state is, and the corresponding specified transmission rate is lower.
According to the data transmission method, the network state of the second device is obtained through the first device, then if the network state does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency, the image frame corresponding to the page to be shared is obtained, the preset acquisition frequency is lower than the original acquisition frequency of the first device to the page to be shared, the image frame is encoded, the data stream to be transmitted is obtained, and then the data stream to be transmitted is transmitted to the second device at the appointed transmission rate. Therefore, under the condition that the network state of the second equipment does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency lower than the original acquisition frequency of the page to be shared acquired by the first equipment, so that a relatively reduced number of image frames can be obtained, the network transmission pressure can be reduced when the data stream to be transmitted obtained after encoding the image frames is transmitted, the problem that the content of the picture cannot be seen due to the fact that the content playing picture of the file in the second equipment is lost due to transmission cartoon when the network state is poor can be avoided, and the user watching experience of the second equipment is improved.
Referring to fig. 4, another embodiment of the present application provides a data transmission method, which is applicable to a first device, and includes:
step S210: the first device obtains a network state of the second device.
Step S220: and if the network state does not meet the target condition, acquiring the page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared.
Step S230: and encoding the image frames to obtain a data stream to be transmitted.
Step S240: and determining the data receiving rate corresponding to each of the at least one second device according to the network state of the at least one second device.
In this embodiment, the first device may determine the data receiving rate of the second device according to the network delay, the network jitter, the packet loss rate, or the like of the second device.
Step S250: and determining the data transmission period corresponding to each of the at least one second device according to the data receiving rate.
In this embodiment, the number of the second devices is at least one.
The second device with the higher data receiving rate receives the page to be shared more quickly, and the second device with the lower data receiving rate receives the page to be shared more slowly. In order to optimize the problem of data loss in the data transmission process caused by poor network environment of the second device and to optimize the problem of network congestion caused by excessive data volume, the embodiment may determine the data transmission period corresponding to at least one second device according to the data receiving rate of the second device to the page to be shared. Specifically, the shorter the data transmission period corresponding to the larger the data reception rate, the longer the data transmission period corresponding to the smaller the data reception rate. For example, the second device may correspond to a data reception rate of 1 frame/second, and the corresponding data transmission period may be 800 ms, and the second device may correspond to a reception rate of 2 frames/second, and the corresponding data transmission period may be 200 ms.
Step S260: and transmitting the data stream to be transmitted to at least one second device according to the respective corresponding data transmission period.
In this embodiment, the update frequency of the page to be shared may be fixed or may be variable.
If the update frequency is fixed, the data stream to be transmitted may be transmitted to at least one second device according to the respective data transmission period. If the update frequency is changed, the update frequency of the page to be shared may be obtained, then the data transmission period corresponding to each of the at least one second device is adjusted according to the update frequency, and then the data stream to be transmitted is transmitted to the at least one second device according to the adjusted data transmission period corresponding to each of the at least one second device. In this embodiment, the faster the update frequency changes, the faster the data transmission period changes.
In a specific application scenario, the data transmission period may be adjusted according to the change of the update frequency. For example, if the data receiving rate corresponding to the second device is 1 frame/second, the corresponding data sending period may be 800 ms, and at this time, if the switching duration of the page to be shared from the previous page to the current page is 600 ms, the data sending period corresponding to the second electronic device may be adjusted (reduced) to 400 ms, or to a value less than 600 ms, that is, the data sending period is less than the switching duration of the page to be shared from the previous page to the current page, so that the content of the page to be shared may be completely collected without missing any page to be shared. Similarly, if the data receiving rate corresponding to the second device is 20 frames/min, the corresponding data sending period may be 300 ms, and if the switching duration of the page to be shared from the previous page to the current page is 700 ms, the data sending period corresponding to the second electronic device may be adjusted (increased here) to 500 ms, so that the pressure of network transmission is reduced by extending the data sending period under the condition that the switching duration is longer and the data receiving rate is greater, and therefore the definition and the picture quality of the page to be shared viewed by the second device may be improved.
It can be understood that if the content of the page to be shared is more, if the transmission is faster, network transmission congestion may be caused due to poor network state of the second device, and if the content of the page to be shared is less, if the transmission is slower, the content of the playing picture in the second device may be lost or blocked, in order to optimize the above problem, the first device in this embodiment may obtain the content complexity of the page to be shared, estimate the update frequency of the page to be shared according to the content complexity, and determine the data transmission period corresponding to each of the at least one second device according to the update frequency.
The higher the content complexity is, the larger the corresponding update frequency is, the longer the data transmission period is (i.e., the higher the content complexity is, the lower the transmission frequency between the first device and the second device is), the lower the content complexity is, the smaller the corresponding update frequency is, the longer the data transmission period is (i.e., the lower the content complexity is, the higher the transmission frequency between the first device and the second device is), thereby realizing flexible determination of the transmission frequency between the first device and the second device according to the content complexity of the page to be shared, and avoiding network transmission pressure generated by too fast transmission when the network state is not good.
The sending time length in the page to be shared can be estimated according to the content complexity, and the data sending period is adjusted according to the number of characters, pictures or videos in the page to be shared and the corresponding sending time length.
For example, in a specific application scenario, if the current page to be shared includes 200 words and two pictures, the estimated transmission duration is 300 ms, and if the data receiving rate corresponding to the second device is 1 frame/second, the switching duration of the page to be shared from the previous page to the current page is 600 ms, the data transmission period corresponding to the second electronic device may be adjusted to 500 ms from the original 400 ms (assuming that the original transmission period determined according to the foregoing manner is 400 ms). Similarly, if the current page to be shared includes 20 characters and 1 picture, the estimated transmission time length is 200 ms, and if the data receiving rate corresponding to the second device is 1 frame/second and the switching time length of the page to be shared from the previous page to the current page is 600 ms, the data transmission period corresponding to the second electronic device can be adjusted to 100 ms from the original 400 ms (assuming that the original transmission period determined according to the foregoing manner is 400 ms).
As another embodiment, the data sending period corresponding to each of the at least one second device may be adjusted according to the content size of the page to be shared in combination with the update frequency of the page to be shared and the data receiving rate. At this time, if the update frequency is slower and the data receiving rate is slower, if the content size is smaller, the corresponding data transmission period is shorter; and if the content size is larger, the corresponding data transmission period is longer. It should be noted that, in this embodiment, the value of the data sending period is smaller than the value corresponding to the update frequency of the page to be shared.
According to the data transmission method, the network state of the second device is obtained through the first device, then if the network state does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency, the image frame corresponding to the page to be shared is obtained, the preset acquisition frequency is lower than the original acquisition frequency of the page to be shared by the first device, the image frame is encoded, the data stream to be transmitted is obtained, then the data receiving rate corresponding to each of the at least one second device is determined according to the network state of the at least one second device, the data sending period corresponding to each of the at least one second device is determined according to the data receiving rate, and the data stream to be transmitted is transmitted to the at least one second device according to the data sending period corresponding to each of the at least one second device. The method realizes the flexible adjustment of the data transmission period for transmitting the data stream to be transmitted according to the network state of the second electronic equipment, further can pertinently transmit the data according to the network state of the opposite terminal equipment when the data content is shared, can avoid network congestion caused by excessive data transmission when the network state of the second equipment is not good, and simultaneously can also avoid the problem of poor file content playing definition of the second equipment caused by the poor network state.
Referring to fig. 5, still another embodiment of the present application provides a data transmission method, which is applicable to a second device, and the method includes:
step S310: the second device transmits the network status to the first device.
In this embodiment, the second device may actively transmit the network state to the first device, or may actively transmit the network state to the server, thereby instructing the server to transmit the network state to the first device.
Step S320: and receiving a data stream to be transmitted by the first equipment, wherein the data stream to be transmitted is acquired by the first equipment to be shared according to a preset acquisition frequency when the network state does not meet a target condition, an image frame corresponding to the page to be shared is obtained, the image frame is encoded, the data stream to be transmitted is transmitted at a specified transmission rate, and the preset acquisition frequency is lower than the original acquisition frequency of the first equipment to be shared.
In this embodiment, the rate at which the second device with different network states receives the data stream to be transmitted may be different. Optionally, the receiving rate corresponding to the second device with stable network state is higher than the receiving rate corresponding to the second device with fluctuating network state.
According to the data transmission method, the second device transmits the network state to the first device, the data stream to be transmitted by the first device is received, the data stream to be transmitted is acquired by the first device according to the preset acquisition frequency when the network state does not meet the target condition, the image frames corresponding to the page to be shared are obtained, the image frames are encoded, the data stream to be transmitted is transmitted at the appointed transmission rate, and the preset acquisition frequency is lower than the original acquisition frequency of the page to be shared by the first device. According to the method, the to-be-shared pages which are transmitted by the first equipment and are acquired according to the preset acquisition frequency lower than the original acquisition frequency of the to-be-shared pages which are acquired by the first equipment are received under the condition that the network state of the second equipment does not meet the target condition, the to-be-shared pages with smaller received data quantity are realized, and then the network transmission pressure caused by receiving the to-be-shared pages with excessive data quantity under the condition that the network state is poor can be relieved, so that the user watching experience of the second equipment is improved.
Referring to fig. 6, an embodiment of the present application provides a data transmission apparatus 400, which operates on a first device, the apparatus 400 includes:
a network state obtaining module 410, configured to obtain a network state of the second device by using the first device.
And the data acquisition module 420 is configured to acquire the page to be shared according to a predetermined acquisition frequency if the network state does not meet the target condition, so as to obtain an image frame corresponding to the page to be shared, where the predetermined acquisition frequency is lower than an original acquisition frequency of the first device on the page to be shared.
In one embodiment, the data acquisition module 420 may be configured to acquire a content type of the page to be shared if the network status does not meet the target condition; and if the content type is the designated type, acquiring the page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared.
In another embodiment, the data acquisition module 420 may be configured to determine a data reception rate of the second device according to the network status; and if the data receiving rate is lower than a preset threshold, judging that the network state does not meet a target condition, and acquiring the page to be shared according to a preset acquisition frequency to obtain an image frame corresponding to the page to be shared.
The encoding module 430 is configured to encode the image frame to obtain a data stream to be transmitted.
And a data transmission module 440, configured to transmit the data stream to be transmitted to the second device at a specified transmission rate.
In this embodiment, the number of the second devices is at least one, and in this manner, the data transmission module 440 may be configured to determine, according to a network state of at least one of the second devices, a data receiving rate corresponding to each of the at least one second device; determining data transmission periods corresponding to at least one second device respectively according to the data receiving rate; and transmitting the data stream to be transmitted to at least one second device according to the respective corresponding data transmission period.
Optionally, the apparatus 400 further includes an adjustment module, configured to obtain an update frequency of the page to be shared; and adjusting the data transmission period corresponding to each of the at least one second device according to the updating frequency, wherein the faster the updating frequency changes, the faster the data transmission period changes.
Referring to fig. 7, another embodiment of the present application provides a data transmission apparatus 500, which operates on a second device, the apparatus 500 includes:
A network state transmission unit 510, configured to transmit the network state to the first device by using the second device.
The data receiving unit 520 is configured to receive a data stream to be transmitted, which is transmitted by the first device, where the data stream to be transmitted is acquired by the first device according to a predetermined acquisition frequency when the network state does not meet a target condition, so as to obtain an image frame corresponding to the page to be shared, and the image frame is encoded, and the data stream to be transmitted is transmitted at a specified transmission rate, and the predetermined acquisition frequency is lower than an original acquisition frequency of the first device on the page to be shared.
In this embodiment, the number of the second devices is at least one. The designated transmission rate corresponding to the second device with stable network state is higher than the designated transmission rate corresponding to the second device with fluctuating network state.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus and modules described above may refer to the corresponding process in the foregoing method embodiment, which is not repeated herein.
In the several embodiments provided herein, the illustrated or discussed coupling or direct coupling or communication connection of the modules to each other may be through some interfaces, indirect coupling or communication connection of devices or modules, electrical, mechanical, or other forms.
In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.
Referring to fig. 8, based on the data transmission method and apparatus described above, an embodiment of the present application further provides an electronic device 100 capable of executing the data transmission method described above. The electronic device 100 includes a memory 102 and one or more (only one is shown) processors 104 coupled to each other, with communication lines connecting the memory 102 and the processors 104. The memory 102 stores therein a program that can execute the contents of the foregoing embodiments, and the processor 104 can execute the program stored in the memory 102.
Wherein the processor 104 may include one or more processing cores. The processor 104 utilizes various interfaces and lines to connect various portions of the overall electronic device 100, perform various functions of the electronic device 100, and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 102, and invoking data stored in the memory 102. Alternatively, the processor 104 may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 104 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like; the GPU is used for being responsible for rendering and drawing of display content; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor 104 and may be implemented solely by a single communication chip.
The Memory 102 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Memory 102 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 102 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the foregoing embodiments, etc. The storage data area may also store data created by the electronic device 100 in use (e.g., phonebook, audiovisual data, chat log data), and the like.
Referring to fig. 9, a block diagram of a computer readable storage medium according to an embodiment of the present application is shown. The computer readable storage medium 600 has stored therein program code that can be invoked by a processor to perform the methods described in the method embodiments described above.
The computer readable storage medium 600 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. Optionally, the computer readable storage medium 600 comprises a non-transitory computer readable medium (non-transitory computer-readable storage medium). The computer readable storage medium 600 has storage space for program code 610 that performs any of the method steps described above. The program code can be read from or written to one or more computer program products. Program code 610 may be compressed, for example, in a suitable form.
In summary, according to the data transmission method, the device, the electronic equipment and the storage medium provided by the application, the network state of the second equipment is obtained through the first equipment, then if the network state does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency, so as to obtain the image frame corresponding to the page to be shared, the preset acquisition frequency is lower than the original acquisition frequency of the first equipment to be shared, the image frame is encoded, so as to obtain the data stream to be transmitted, and then the data stream to be transmitted is transmitted to the second equipment at the appointed transmission rate. Therefore, under the condition that the network state of the second equipment does not meet the target condition, the page to be shared is acquired according to the preset acquisition frequency lower than the original acquisition frequency of the first equipment for acquiring the page to be shared, so that a relatively reduced number of image frames can be obtained, the network transmission pressure can be reduced when the data stream to be transmitted obtained after the image frames are encoded is transmitted, and the user viewing experience of the second equipment is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, one of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A method of data transmission, for use with a first device, the method comprising:
the first device acquires the network state of the second device;
if the network state does not meet the target condition, acquiring a page to be shared according to a preset acquisition frequency to obtain an image frame corresponding to the page to be shared, wherein the preset acquisition frequency is lower than an original acquisition frequency of the first equipment on the page to be shared, the preset acquisition frequency represents a frequency for intercepting the whole image picture content of the screen of the first equipment, the original acquisition frequency is determined according to the content complexity of the page to be shared, the higher the content complexity is, the lower the corresponding original acquisition frequency is, and the lower the corresponding preset acquisition frequency is; the lower the content complexity is, the higher the corresponding original acquisition frequency is, and the higher the corresponding preset acquisition frequency is; if the pages to be shared are PPT images, the preset acquisition frequency is higher than the page turning frequency among different PPT image pages;
encoding the image frames to obtain a data stream to be transmitted;
and transmitting the data stream to be transmitted to the second equipment at a designated transmission rate.
2. The method of claim 1, wherein the number of second devices is at least one, and wherein transmitting the data stream to be transmitted to the second devices at a specified transmission rate comprises:
determining the data receiving rate corresponding to each of at least one second device according to the network state of the at least one second device;
determining data transmission periods corresponding to at least one second device respectively according to the data receiving rate;
and transmitting the data stream to be transmitted to at least one second device according to the respective corresponding data transmission period.
3. The method according to claim 2, wherein the method further comprises:
acquiring the update frequency of the page to be shared;
and adjusting the data transmission period corresponding to each of the at least one second device according to the updating frequency, wherein the faster the updating frequency changes, the faster the data transmission period changes.
4. The method of claim 1, wherein if the network state does not meet the target condition, acquiring the page to be shared according to a predetermined acquisition frequency to obtain the image frame corresponding to the page to be shared, including:
If the network state does not meet the target condition, acquiring the content type of the page to be shared;
and if the content type is the designated type, acquiring the page to be shared according to a preset acquisition frequency, and obtaining an image frame corresponding to the page to be shared.
5. The method of claim 1, wherein if the network state does not meet the target condition, acquiring the page to be shared according to a predetermined acquisition frequency to obtain the image frame corresponding to the page to be shared, including:
determining a data receiving rate of the second device according to the network state;
and if the data receiving rate is lower than a preset threshold, judging that the network state does not meet a target condition, and acquiring the page to be shared according to a preset acquisition frequency to obtain an image frame corresponding to the page to be shared.
6. A data transmission method, applied to a second device, the method comprising:
the second device transmitting a network status to the first device;
receiving a data stream to be transmitted by the first device, wherein the data stream to be transmitted is acquired by the first device to be shared according to a preset acquisition frequency when the network state does not meet a target condition, an image frame corresponding to the page to be shared is obtained, the image frame is encoded, the data stream to be transmitted is transmitted at a specified transmission rate, the preset acquisition frequency is lower than an original acquisition frequency of the first device to be shared, the preset acquisition frequency represents a frequency of intercepting the whole image picture content of a screen of the first device, the original acquisition frequency is determined according to the content complexity of the page to be shared, the higher the content complexity is, the lower the corresponding original acquisition frequency is, and the lower the corresponding preset acquisition frequency is; the lower the content complexity is, the higher the corresponding original acquisition frequency is, and the higher the corresponding preset acquisition frequency is; if the pages to be shared are PPT images, the preset acquisition frequency is higher than the page turning frequency among different PPT image pages.
7. A data transmission apparatus operable with a first device, the apparatus comprising:
the network state acquisition module is used for acquiring the network state of the second device by the first device;
the data acquisition module is used for acquiring a page to be shared according to a preset acquisition frequency if the network state does not meet a target condition, so as to obtain an image frame corresponding to the page to be shared, wherein the preset acquisition frequency is lower than an original acquisition frequency of the first equipment for the page to be shared, the preset acquisition frequency represents a frequency for intercepting the whole image picture content of the screen of the first equipment, the original acquisition frequency is determined according to the content complexity of the page to be shared, the higher the content complexity is, the lower the corresponding original acquisition frequency is, and the lower the corresponding preset acquisition frequency is; the lower the content complexity is, the higher the corresponding original acquisition frequency is, and the higher the corresponding preset acquisition frequency is; if the pages to be shared are PPT images, the preset acquisition frequency is higher than the page turning frequency among different PPT image pages;
the coding module is used for coding the image frames to obtain a data stream to be transmitted;
And the data transmission module is used for transmitting the data stream to be transmitted to the second equipment at a specified transmission rate.
8. A data transmission apparatus operable on a second device, the apparatus comprising:
a network state transmission unit, configured to transmit a network state to a first device by the second device;
the data receiving unit is used for receiving a data stream to be transmitted by the first device, wherein the data stream to be transmitted is obtained by acquiring a page to be shared according to a preset acquisition frequency when the network state of the first device does not meet a target condition, the image frame corresponding to the page to be shared is obtained after the image frame is encoded, the data stream to be transmitted is transmitted at a specified transmission rate, the preset acquisition frequency is lower than an original acquisition frequency of the page to be shared, the preset acquisition frequency represents a frequency for intercepting the whole image picture content of a screen of the first device, the original acquisition frequency is determined according to the content complexity of the page to be shared, and the higher the content complexity is, the lower the corresponding original acquisition frequency is, and the lower the corresponding preset acquisition frequency is; the lower the content complexity is, the higher the corresponding original acquisition frequency is, and the higher the corresponding preset acquisition frequency is; if the pages to be shared are PPT images, the preset acquisition frequency is higher than the page turning frequency among different PPT image pages.
9. An electronic device comprising one or more processors and a memory;
one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs configured to perform the method of any of claims 1-5 or 6.
10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a program code, wherein the program code, when being executed by a processor, performs the method of any of claims 1-5 or 6.
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