CN115190334A - State communication method, device, control equipment and readable storage medium - Google Patents
State communication method, device, control equipment and readable storage medium Download PDFInfo
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- CN115190334A CN115190334A CN202210629277.5A CN202210629277A CN115190334A CN 115190334 A CN115190334 A CN 115190334A CN 202210629277 A CN202210629277 A CN 202210629277A CN 115190334 A CN115190334 A CN 115190334A
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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
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
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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
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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
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
Abstract
The application provides a state communication method, a state communication device, a control device and a readable storage medium, wherein the method comprises the following steps: sending video frames to the connected client through the video channel based on the cloud streaming application; and in the case that the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which represents that the communication with the client is available to the client through the video channel. In the application, when the cloud streaming application carries out continuous video frame transmission, the connection is indicated to the client through the video frame; when the server side has no data updating, an auxiliary frame is sent through a multiplexing video channel to indicate that the connection is available; by multiplexing the video channels, the occupation of additional transmission channels and the waste of server port resources are avoided.
Description
Technical Field
The present application relates to the field of computer technologies, and in particular, to a state communication method, an apparatus, a control device, and a readable storage medium.
Background
With the continuous development of cloud computing, the applications of enabling the weak terminal equipment by using the strong computing power of the cloud end are gradually increased, and the application scenes of the weak terminal equipment can be effectively widened by rendering at the cloud end, transmitting to the weak terminal equipment in a video stream mode and displaying. This usage requires maintaining the connection status between the client and the server.
The traditional approach is that the client and the server maintain a connection channel for sending a server heartbeat, i.e. an intermittent status notification, to indicate that a connection is available. This would occupy additional transmission channels, wasting server port resources.
Disclosure of Invention
The problem that this application was solved is that traditional heartbeat channel wastes server port resource.
In order to solve the above problem, a first aspect of the present application provides a status communication method, including:
sending video frames to the connected client through the video channel based on the cloud streaming application;
and in the case that the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which is used for representing the communication availability of the client to the client through the video channel.
A second aspect of the present application provides a status communication apparatus, including:
a video frame sending module for sending video frames to connected clients via a video channel based on a cloud streaming application;
and the auxiliary frame sending module is used for sending an auxiliary frame which is used for representing that the communication with the client is available to the client through the video channel under the condition that the current video frame sending interval exceeds a threshold value.
A third aspect of the present application provides a control apparatus, comprising: a memory and a processor;
the memory for storing a program;
the processor, coupled to the memory, to execute the program to:
sending video frames to the connected client through the video channel based on the cloud streaming application;
and in the case that the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which represents that the communication with the client is available to the client through the video channel.
A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement the state communication method described above.
In the application, when the cloud streaming application carries out continuous video frame transmission, the connection is indicated to the client through the video frame; when the server side has no data updating, an auxiliary frame is sent through a multiplexing video channel to indicate that the connection is available; by multiplexing the video channels, the occupation of additional transmission channels and the waste of server port resources are avoided.
In the application, the video channel is multiplexed, and the auxiliary frame is only sent when the video channel has no data transmission, so that the influence on normal video transmission is avoided.
Drawings
FIG. 1 is a flow chart of a state communication method according to an embodiment of the present application;
FIG. 2 is an architecture diagram of a server and a client according to the present application;
FIG. 3 is a flowchart of a status communication method according to another embodiment of the present application;
FIG. 4 is a block diagram of a status communicating device according to an embodiment of the present application;
fig. 5 is a block diagram of a control device according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
With the continuous development of cloud computing, the applications of enabling the weak terminal equipment by using the strong computing power of the cloud end are gradually increased, and the application scenes of the weak terminal equipment can be effectively widened by rendering at the cloud end, transmitting to the weak terminal equipment in a video stream mode and displaying. Since data transmission between the server and the client is required, the connection status between the client and the server needs to be tracked and maintained, and corresponding processing is performed when an error occurs. The traditional processing method is that a client and a server maintain a connection channel for sending server heartbeat, namely, interval status notification to indicate that a connection is available; the scheme can occupy an extra transmission channel, which is a waste for server resources, and the same server often has a plurality of client terminals connected at the same time, which can occupy a large amount of server port resources.
In order to solve the above problem, the present application provides a new gray scale publishing scheme, which can send an auxiliary frame to indicate that the connection is normally available through multiplexing a video transmission channel when the server side is not updated, thereby solving the problem of occupying an additional transmission channel and wasting server port resources.
For ease of understanding, the following terms that may be used are explained herein:
cloud streaming application: the application runs on a server at the cloud end, and the interface at the cloud end is sent to the terminal equipment in a video streaming mode and displayed, just as if the application runs on the local terminal equipment.
Weak terminal equipment: the hardware configuration is lower, and the computing power is poorer.
SEI frame: the full name is Supplemental Enhancement Information (Supplemental Enhancement Information), and a method for adding extra Information into a video code stream is one of the characteristics of video compression standards such as H.264/H.265 and the like.
The embodiment of the application provides a state communication method, which can be executed by a state communication device, wherein the state communication device can be integrated in electronic equipment such as a pad, a computer, a server cluster, a data center and the like. Fig. 1 is a flowchart illustrating a status communication method according to an embodiment of the present application; the state communication method comprises the following steps:
s100, sending video frames to connected clients through video channels based on cloud streaming application;
and S200, when the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which is used for representing the communication with the client side to the client side through the video channel.
It can be understood that the client has a timeout mechanism, and if the information or data packet or frame of the server is not received for a certain time, the connection with the server is determined to be failed.
It can be understood that, for the cloud streaming application, the interface of the cloud end is sent to the client end in a video streaming mode and displayed. Compared with a normal video or a standard channel video such as a playing video, the difference is that the standard channel video has continuous information stream and video frame sending all the time, the cloud stream application is a corresponding client which sends an updated interface in a video stream mode formed by video frames only under the condition that the interface of the cloud end is updated, and if the interface of the cloud end is not updated or is not operated, the cloud end cannot send data to the client.
It can be understood that the server in the cloud and the server in the application refer to the same content, and the server, the server and the like can be used for replacement, which is not limited in the application.
In the application, when the cloud streaming application carries out continuous video frame transmission, the connection is indicated to the client through the video frame; when the server side has no data updating, an auxiliary frame is sent through a multiplexing video channel to indicate that the connection is available; by multiplexing the video channels, the occupation of additional transmission channels and the waste of server port resources are avoided.
In the application, the video channel is multiplexed, and the auxiliary frame is only sent when the video channel has no data transmission, so that the influence on normal video transmission is avoided.
In one embodiment, a timeout mechanism of a client corresponds to a sometimes long threshold, a sending interval of a video frame of the application also corresponds to a threshold, and an auxiliary frame is sent only when the threshold is exceeded; the threshold corresponding to the sending interval of the video frame is less than or equal to the time threshold corresponding to the timeout mechanism of the client, so that the triggering timeout of the client caused by time errors in the data transmission process can be avoided.
In one embodiment, said transmission interval is re-timed after said transmission of an auxiliary frame to said client via said video channel.
And re-timing the sending interval, and sending the auxiliary frame again when the sending interval exceeds the threshold value, so that the data flow from the server to the client is maintained at the frequency less than or equal to the threshold value, and the connection state of the server and the client is maintained.
In one embodiment, said transmission interval is timed after transmitting an auxiliary frame or video frame to said client via said video channel, and said transmission interval is zeroed after transmission of a subsequent auxiliary frame or video frame, and timing is restarted.
As shown in fig. 2, it is an architecture diagram of a server and a client, and it can be seen from the diagram that the server and the client do not have a one-to-one correspondence relationship.
In one embodiment, the number of the clients is multiple, and in sending video frames to the clients through video channels, the clients are sent with corresponding video frames respectively, and the sending intervals of the current video frames are timed respectively.
It can be understood that, as a server at the cloud, one server communicates with a plurality of clients. Since the plurality of clients are independent of each other, the video frames transmitted by the plurality of clients and the transmission intervals of the video frames are also independent of each other, and it is necessary to transmit and time the video frames.
In one embodiment, the sending intervals of the plurality of clients are not the same as each other.
It can be understood that, in a plurality of the clients, the time length threshold corresponding to the timeout mechanism of each client is not necessarily the same, and the threshold corresponding to the sending interval of the server corresponding to the client and each client is also not necessarily the same.
In one embodiment, the auxiliary frame is a supplemental enhancement information frame, or a frame predefined at the server and the client.
It can be understood that the supplemental enhancement information frame is an SEI frame; the auxiliary frame may be an SEI frame in a standard form, or may be an additional defined frame, in which case the additional definition needs to be predefined at both the server and the corresponding client.
In one embodiment, the auxiliary frame is recorded with heartbeat information, and the heartbeat information is a notification bit or a flag bit.
It can be understood that, when the heartbeat information is a notification bit or a flag bit, the data size occupied by the heartbeat information is small, the corresponding auxiliary frame is also small (dozens of bytes), and the auxiliary frame with a small size is sent, so that the influence on normal video transmission can be avoided.
In this application, the heartbeat information may also be other information, as long as the information is predefined at the corresponding client, and the client can analyze the information.
For example, the heartbeat information may also be a predefined specific message, or may also be a predefined string of codes.
In the application, after receiving the auxiliary frame, the client can perform analysis to obtain the corresponding content.
In one embodiment, when a server restarts a connection with the client, restart information or a restart request of the server is recorded in the auxiliary frame sent to the client.
It can be understood that one server is connected with a plurality of clients, and the server and each client are provided with a connecting channel; when a problem occurs in a connection channel between the server and a client, the server can be reconnected in a connection restarting mode.
It should be noted that the server has a plurality of connection channels, and only the connection channel with a problem needs to be restarted. When the server restarts the connection channel, the client may try connection again in a manner that the client sends an auxiliary frame recorded with restart information or a restart request of the server.
In the application, in a cloud desktop application scene, after the cloud desktop is programmed into a video picture and transmitted to the client, the client displays the video picture immediately. The client and the cloud desktop do not need to be time synchronized.
In one embodiment, as shown in fig. 3, the method further comprises:
and S300, responding to the received delay test message sent by the client, and sending the auxiliary frame recorded with the delay information of the server to the client.
In this step, a usage scenario of network delay is evaluated for the client. The client sends a delay test message to the server through the data channel, wherein the specific format or carrying content of the delay test message is not limited in the application; after receiving the delay test message, the server side directly sends an auxiliary frame to the client side, and the client side can evaluate the delay condition of the network according to the interval of sending and receiving time.
In the application, the video transmission channel is multiplexed, and the SEI frame is sent to send the server state information to the client, so that the server port resources are effectively saved, and the original video transmission channel is not affected.
The embodiment of the present application provides a state communication device, which is used for executing the state communication method described in the above-mentioned content of the present application, and the state communication device is described in detail below.
As shown in fig. 4, the state communication device includes:
a video frame sending module 101, configured to send video frames to connected clients via a video channel based on a cloud streaming application;
an auxiliary frame sending module 102, configured to send an auxiliary frame to the client via the video channel, where a current video frame sending interval exceeds a threshold, the auxiliary frame indicating that connectivity with the client is available.
In one embodiment, the auxiliary frame sending module 102 is further configured to: the transmission interval is re-timed after the transmission of an assistance frame to the client via the video channel.
In one embodiment, the number of the clients is multiple, and the auxiliary frame sending module 102 is further configured to: and in the process of sending the video frames to the client through the video channel, sending the corresponding video frames to the plurality of clients respectively, and timing the sending intervals of the current video frames respectively.
In one embodiment, the auxiliary frame is a supplemental enhancement information frame, or a frame predefined at the server and the client.
In one embodiment, the auxiliary frame is recorded with heartbeat information, and the heartbeat information is a notification bit or a flag bit.
In one embodiment, the auxiliary frame sending module 102 is further configured to: and under the condition that the server side restarts the connection with the client side, recording the restarting information or the restarting request of the server side in the auxiliary frame sent to the client side.
In one embodiment, the auxiliary frame sending module 102 is further configured to: and responding to the received delay test message sent by the client, and sending the auxiliary frame recorded with the delay information of the server to the client.
The state communication device provided by the above embodiment of the present application and the state communication method provided by the embodiment of the present application have the same beneficial effects as the method adopted, operated or implemented by the application program stored in the state communication device.
Having described the internal functions and structure of the state communication apparatus as described above, as shown in fig. 5, in practice, the state communication apparatus may be implemented as a control device including: a memory 301 and a processor 303.
A memory 301, which may be configured to store a program.
In addition, the memory 301 may also be configured to store other various data to support operations on the control device. Examples of such data include instructions for any application or method operating on the control device, contact data, phonebook data, messages, pictures, videos, and the like.
The memory 301 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
A processor 303, coupled to the memory 301, for executing programs in the memory 301 for:
sending video frames to the connected client through the video channel based on the cloud streaming application;
and in the case that the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which is used for representing the communication availability of the client to the client through the video channel.
In one embodiment, the processor 303 is specifically configured to: -re-timing said transmission interval after said transmission of an assistance frame to said client via said video channel.
In one embodiment, the number of the clients is multiple, and the processor 303 is specifically configured to: and in the process of sending the video frames to the clients through the video channel, sending the corresponding video frames to the clients respectively, and timing the sending intervals of the current video frames respectively.
In one embodiment, the auxiliary frame is a supplemental enhancement information frame, or a frame predefined at the server and the client.
In one embodiment, heartbeat information is recorded in the auxiliary frame, and the heartbeat information is a notification bit or a flag bit.
In one embodiment, the processor 303 is specifically configured to: and under the condition that the server side restarts the connection with the client side, recording the restarting information or the restarting request of the server side in the auxiliary frame sent to the client side.
In one embodiment, the processor 303 is specifically configured to: and responding to the received delay test message sent by the client, and sending the auxiliary frame recorded with the delay information of the server to the client.
In the present application, only some of the components are schematically shown in fig. 5, and it is not intended that the control apparatus includes only the components shown in fig. 5.
The control device provided by the embodiment of the present application and the state communication method provided by the embodiment of the present application have the same beneficial effects as the methods adopted, operated or implemented by the stored application programs.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.
The present application further provides a computer-readable storage medium corresponding to the state communication method provided in the foregoing embodiments, and a computer program (i.e., a program product) is stored thereon, and when being executed by a processor, the computer program performs the state communication method provided in any of the foregoing embodiments.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
The computer-readable storage medium provided by the above-mentioned embodiment of the present application and the state communication method provided by the embodiment of the present application have the same beneficial effects as the method adopted, operated or implemented by the application program stored in the computer-readable storage medium.
It should be noted that in the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (10)
1. A method for communicating status, comprising:
sending video frames to the connected client through the video channel based on the cloud streaming application;
and in the case that the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which represents that the communication with the client is available to the client through the video channel.
2. The method of claim 1, wherein said sending the auxiliary frame characterizing the availability of connectivity to the client via the video channel is followed by re-timing the sending interval.
3. The method according to claim 1, wherein the number of the clients is plural, and in transmitting video frames to the clients via video channels, the clients respectively transmit corresponding video frames, and the transmission intervals of the current video frames are respectively timed.
4. The method of claim 1, wherein the auxiliary frame is a supplemental enhancement information frame or a frame predefined at a server and a client.
5. The method according to claim 1, wherein the auxiliary frame is recorded with heartbeat information, and the heartbeat information is a notification bit or a flag bit.
6. The method of claim 1, further comprising: and under the condition that the server side restarts the connection with the client side, recording the restarting information or restarting request of the server side in the auxiliary frame sent to the client side.
7. The method of claim 1, further comprising:
and responding to the received delay test message sent by the client, and sending the auxiliary frame recorded with the delay information of the server to the client.
8. A status communication device, comprising:
a video frame sending module for sending video frames to connected clients via a video channel based on a cloud streaming application;
and the auxiliary frame sending module is used for sending an auxiliary frame which is used for representing the communication availability of the client to the client through the video channel under the condition that the current video frame sending interval exceeds a threshold value.
9. A control apparatus, characterized by comprising: a memory and a processor;
the memory for storing a program;
the processor, coupled to the memory, to execute the program to:
sending video frames to the connected client through the video channel based on the cloud streaming application;
and in the case that the current video frame sending interval exceeds a threshold value, sending an auxiliary frame which represents that the communication with the client is available to the client through the video channel.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the program is executed by a processor to implement the method of any of claims 1-7.
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| CN112486450A (en) * | 2021-02-04 | 2021-03-12 | 江苏北弓智能科技有限公司 | Method and device for mobile cloud desktop on-screen interaction |
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