CN114786068A - Switching method and device, and video net switching system and method - Google Patents
Switching method and device, and video net switching system and method Download PDFInfo
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/64322—IP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
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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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
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Abstract
The embodiment of the application provides a switching method and a device, and a video net switching system and a method, wherein the switching method comprises the following steps: receiving at least one video stream sent by a video sending end and a first stream table sent by a switching controller; matching the at least one video stream with the first stream table, and forwarding a first video stream in the at least one video stream according to a matching result; responding to the switching request of the destination end, sending a switching command to the switching controller, and receiving a second flow table sent by the switching controller; and matching the at least one video stream with the second flow table, and forwarding the second video stream in the at least one video stream according to a matching result.
Description
Technical Field
The present application relates to the field of video production technologies, and in particular, to a switching method and apparatus, and a system and method for video net switching.
Background
In the 4K/8K ultra high definition signal, the number of pixels in the horizontal direction of the 8K television signal is 7680, the name is obtained by approaching 8K, the resolution of the representative television signal is 7680 × 4320, and 3318 ten thousand pixels are provided for each picture. Taking the transmission of 4:4:4 digital video component signals with 10-bit quantization precision as an example, the code rate of 4K ultra-high definition signals is about 12Gbps, and the transmission of 8K ultra-high definition signals usually adopts a four-path 4K ultra-high definition signal transmission mode, so the code rate of 8K ultra-high definition signals is up to 48 Gbps. At present, the 3G-SDI with the highest transmission bandwidth only supports the transmission rate of 3Gbps and cannot meet the transmission of ultra-high definition signals.
In the prior art, the requirement of bandwidth transmission of 4K/8K ultra-high definition signals can be met by adopting an IP transmission mode, and in addition, the system structure can be simpler by adopting the IP of a broadcast television network infrastructure. Meanwhile, the video transmission cost can be quickly reduced by depending on the scale advantage of the IT industry, and the new media service can be promoted to be better integrated with the broadcasting and television service. Therefore, the IP of the media network is a trend of the development of broadcasting and television.
In the development process of the radio and television network moving towards the IP, some technical difficulties are inevitably encountered. Video switching is one of the difficulties, and how to rapidly forward a corresponding video stream according to a switching request of a destination becomes an urgent problem to be solved in the broadcasting and television industry.
Disclosure of Invention
In order to solve the above technical problem, embodiments of the present application provide a switching method and apparatus, a video net switching system and method, which can implement fast switching of video streams by issuing a stream table to control forwarding of video streams of a switch.
The embodiment of the application provides a switching method, which is applied to a switch and comprises the following steps:
receiving at least one video stream sent by a video sending end and a first stream table sent by a switching controller;
matching the at least one video stream with the first stream table, and forwarding the first video stream in the at least one video stream according to a matching result;
responding to a switching request of a destination end, sending a switching command to a switching controller, and receiving a second flow table sent by the switching controller;
and matching the at least one video stream with the second flow table, and forwarding the second video stream in the at least one video stream according to a matching result.
The embodiment of the present application further provides a handover method, applied to a handover controller, including:
configuring a flow table file containing a plurality of flow tables based on configuration information of a switch;
sending a first flow table to a switch;
receiving a switching command sent by a switch, wherein the switching command is used for indicating switching of a flow table;
the second flow table is sent to the switch based on a switch command of the switch.
The embodiment of the present application further provides a switching device, which is applied to a switch, and includes:
the first receiving unit is used for receiving at least one video stream sent by the video sending end and a first stream table sent by the switching controller; and
the receiving switching controller sends a second flow table;
a forwarding unit, configured to match the at least one video stream with the first stream table, and forward a first video stream in the at least one video stream according to a matching result; and
matching the at least one video stream with the second flow table, and forwarding the second video stream in the at least one video stream according to a matching result;
and the switching unit is used for responding to the switching request of the destination end and sending a switching command to the switching controller.
The embodiment of the present application further provides a switching apparatus, applied to a switching controller, including:
a configuration unit configured to configure a flow table file containing a plurality of flow tables based on configuration information of a switch;
the second receiving unit is used for receiving a switching command sent by the switch, and the switching command is used for indicating to switch the flow table;
a transmitting unit for transmitting the first flow table to the switch, an
The second flow table is sent to the switch based on a switch command of the switch.
The embodiment of the application also provides a video net switching system, which comprises a terminal, a Software Defined Network (SDN) controller and a switch;
the terminal is used for acquiring at least one operation of an importing operation, a first triggering operation and a second triggering operation, wherein the importing operation is used for triggering the terminal to import a flow table file to the SDN controller, the flow table file is configured based on configuration information of a switch, and the flow table file comprises a plurality of flow tables; the first triggering operation is used for triggering the terminal to generate a matrix switching panel based on a plurality of video streams transmitted by a plurality of stream tables and a switch; the second trigger operation is used for triggering the terminal to send a switching instruction to the switch through the matrix switching panel;
the SDN controller is used for acquiring and storing a flow table file imported by the terminal;
and the switch is used for acquiring the switching instruction of the terminal and forwarding the video stream indicated by the switching instruction.
The embodiment of the application also provides a video net switching method, which comprises the following steps:
importing a flow table file to an SDN controller through an importing operation trigger terminal, wherein the flow table file is configured based on configuration information of a switch and comprises a plurality of flow tables;
triggering the terminal through a first trigger operation to generate a matrix switching panel based on the plurality of flow tables and the video flow transmitted by the switch;
triggering the terminal to send a switching instruction to the switch through the matrix switching panel through a second triggering operation;
and forwarding the video stream corresponding to the switching instruction by the switch based on the switching instruction.
The embodiment of the present application further provides an electronic device, which includes a processor and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, and execute the switching method provided in the embodiment of the present application, or execute the video net switching method provided in the embodiment of the present application.
The embodiment of the present application further provides a computer-readable storage medium, which stores executable instructions, where the executable instructions, when executed by a processor, implement the handover method provided in the embodiment of the present application, or the video net handover method provided in the embodiment of the present application.
The embodiment of the application provides a switching method and a device, and a video net switching system and a method, wherein the switching method comprises the following steps: the switch controller configures a flow table file based on the configuration information of the switch, and sends a first flow table to the switch; the switch receives at least one video stream sent by a video sending end and a first stream table sent by the switching controller; the switch matches the at least one video stream with the first flow table and forwards the first video stream in the at least one video stream according to a matching result; the switch responds to the switching request of the destination end and sends a switching command to the switching controller, the switching controller receives the switching command of the switch and sends a second flow table to the switch based on the switching command of the switch; and the switch matches the at least one video stream with the second flow table and forwards the second video stream in the at least one video stream according to a matching result. The switching method provided by the embodiment of the application can realize the fast switching of the video stream by sending the video stream forwarding of the stream table control switch by the switching controller.
Drawings
Fig. 1 is a schematic flowchart of a handover method according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a second handover method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a switching device according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a second switching device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a video net switching system according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a video net switching system according to an embodiment of the present application;
FIG. 7 is a schematic diagram of an acquire import operation provided in an application embodiment of the present application;
FIG. 8 is a schematic diagram of a first presentation interface provided by an embodiment of the application;
fig. 9 is a schematic diagram of obtaining a first trigger operation according to an embodiment of the present application;
FIG. 10 is a schematic diagram of a second presentation interface provided in an exemplary application of the present application;
fig. 11 is a schematic flowchart of a video net switching method according to an embodiment of the present application;
fig. 12 is a schematic composition diagram of an electronic device according to an embodiment of the present application.
Detailed Description
So that the manner in which the features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
It should be noted that, in the embodiment of the present application, the term "and/or" is only an association relationship for describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the embodiment of the present application, the character "/" generally indicates that the preceding and following associated objects are in an "or" relationship.
In the description of the embodiments of the present application, the term "correspond" may indicate that there is a direct correspondence or an indirect correspondence between the two, may also indicate that there is an association between the two, and may also indicate and is indicated, configure and is configured, and the like.
For the convenience of understanding of the technical solutions of the embodiments of the present application, the following related technologies of the embodiments of the present application are described below, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, and all of them belong to the protection scope of the embodiments of the present application.
In the background of media convergence, in order to better merge new media services with broadcasting and television services, video signals are greatly developed due to the impact of direct new media on the traditional broadcasting and television industry. From the initial analog signal to the high-definition signal, the full high-definition signal and the current 4K/8K ultra-high-definition signal. In the 4K/8K ultra high definition signal, the number of pixels in the horizontal direction of the 8K television signal is 7680, the name is obtained by approaching 8K, the resolution of the representative television signal is 7680 × 4320, and 3318 ten thousand pixels are provided for each picture. Taking the transmission of a 4:4:4 digital video component signal with 10-bit quantization precision as an example, the code rate of a 4K ultra-high definition signal is about 12Gbps, and the code rate of an 8K ultra-high definition signal is up to 48 Gbps.
The traditional Digital Serial Interface (SDI) Interface technology can realize the transmission of high definition signals, but cannot be used for the transmission of 4K/8K ultra-high definition signals because the transmission rate is too low. The SDI interface is divided into an SD-SDI interface, an HD-SDI interface and a 3G-SDI interface, wherein the transmission rate of the SD-SDI interface is 270Mbps, the transmission rate of the HD-SDI interface is 1.485Gbps, the transmission rate of the 3G-SDI interface is 2.97Gbps and is close to 3 Gbps.
Taking the transmission of 4K ultra-high definition signals as an example, the code rate of the 4K ultra-high definition signals is about 12Gbps, 4 3G-SDI cables are needed for transmitting one path of 4K ultra-high definition signals by using the 3G-SDI with the highest transmission rate, and the requirement on equipment interfaces is too high. Although single 12G-SDI cables have emerged, the high price makes them remote from practical use and untimely.
In the prior art, the requirement of bandwidth transmission of 4K/8K ultra-high definition signals can be met by adopting an IP transmission mode, and in addition, the system structure can be simpler by IP of a broadcast television network infrastructure. Meanwhile, the video transmission cost can be quickly reduced by depending on the scale advantage of the IT industry, and the new media service can be better fused with the broadcasting and television service. Therefore, the IP of the media network is a trend of the development of broadcasting and television.
In the development process of the radio and television network toward the IP, some technical difficulties are inevitably encountered. For example, video switching is one of the difficulties. Specifically, a video sending end sends a plurality of video streams to different tunnels of a switch, and a destination end only receives one video stream forwarded by the switch, so that how the switch rapidly forwards the corresponding video stream according to a switching request of the destination end becomes a problem to be solved urgently in the radio and television industry.
In order to solve at least some of the above-mentioned defects, the following technical solutions of the embodiments of the present application are proposed.
So that the manner in which the features and advantages of the present application can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings; the described embodiments should not be considered as limiting the present application, and all other embodiments obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present application.
The embodiment of the application provides a switching method which is applied to a switch. As shown in fig. 1, fig. 1 is a schematic flowchart of a handover method provided in an embodiment of the present application, where the handover method includes:
step 101: receiving at least one video stream sent by a video sending end and a first stream table sent by a switching controller;
step 102: matching the at least one video stream with the first stream table, and forwarding the first video stream in the at least one video stream according to a matching result;
step 103: responding to a switching request of a destination end, sending a switching command to a switching controller, and receiving a second flow table sent by the switching controller;
step 104: and matching the at least one video stream with the second flow table, and forwarding the second video stream in the at least one video stream according to a matching result.
The switch provides a plurality of input tunnels, can simultaneously transmit a plurality of video streams, and forwards the appointed video stream to a destination end under the control of the switching controller. And the switching controller controls the video stream forwarded by the switch in a manner of sending the stream table to the switch.
The flow table consists of a packet header field, a counter and an action table part. The Header Fields, also called matching Fields, are used for matching with the video stream transmitted by the switch, where the Header Fields include 12 Tuple information, which are an ingress port (tunnel information), a source MAC address, a destination MAC address, an IP protocol, and the like. Typically, in practical applications, the video stream of the access switch is determined previously. Thus, the message information and tunnel information corresponding to the video stream forwarded by the switch are also known. Therefore, the flow table may be configured in advance and stored in the handover controller. Therefore, the forwarding function of the switch can be separated from the control function of the switching controller, the switch can only realize simple and high-speed data forwarding locally, and the video stream switching speed of the switch is effectively improved.
Further, after the switch receives the flow table sent by the switching controller, the switch needs to match the flow table with the corresponding video stream. Specifically, the video streams are subjected to message analysis, tuple information corresponding to each video stream is extracted, and then the stream table is matched with the corresponding video streams based on the tuple information contained in a packet header field of the stream table by using a table look-up algorithm. In order to increase the matching speed and further effectively increase the video stream switching speed of the switch, the video stream can be analyzed first according to the foregoing.
Based on this, in an embodiment, after receiving at least one video stream sent by a video sending end, the method further includes:
and performing message analysis on the at least one video stream, and extracting tuple information corresponding to each video stream.
Furthermore, in the process of switching the video streams by the switch for multiple times, in order to save computing resources and improve the matching speed between the stream table and the corresponding video stream, after the tuple information corresponding to each video stream is extracted, the tuple information corresponding to each video stream can be cached in the switch so as to be used when the switch performs the matching operation next time.
Based on this, in an embodiment, after the extracting tuple information corresponding to each video stream, the method further includes:
and caching tuple information corresponding to each video stream.
Further, as mentioned above, in an embodiment, the matching the at least one video stream with the first stream table includes:
matching the at least one video stream with a first stream table based on the tuple information corresponding to each video stream.
Said matching said at least one video stream with said second stream table comprises:
and matching the at least one video stream with a second stream table based on the tuple information corresponding to each video stream.
The embodiment of the application also provides a switching method which is applied to the switching controller. As shown in fig. 2, fig. 2 is a schematic flowchart of a second handover method provided in the embodiment of the present application, where the handover method includes:
step 201: configuring a flow table file containing a plurality of flow tables based on configuration information of a switch;
step 202: sending a first flow table to a switch;
step 203: receiving a switching command sent by a switch, wherein the switching command is used for indicating switching of a flow table;
step 204: the second flow table is sent to the switch based on a switch command of the switch.
Since the video stream accessing the switch is determined in advance in practical applications, the message information and the tunnel information corresponding to the video stream forwarded by the switch are also known. The flow table may be configured in advance and stored in the handover controller.
As mentioned above, the header field in the flow table is used for matching with the video stream transmitted by the switch. Therefore, the configuration information of the switch should include message information and tunnel information for parsing into tuple information.
Based on this, in an embodiment, the configuration information includes message information and tunnel information corresponding to each video stream transmitted by the switch.
The embodiment of the application provides a switching method, wherein a switching controller configures a flow table file based on configuration information of a switch, and sends a first flow table to the switch; the switch receives at least one video stream sent by a video sending end and a first stream table sent by the switching controller; the switch matches the at least one video stream with the first flow table and forwards a first video stream in the at least one video stream according to a matching result; the switch responds to the switching request of the destination end and sends a switching command to the switching controller, the switching controller receives the switching command of the switch and sends a second flow table to the switch based on the switching command of the switch; and the switch matches the at least one video stream with the second flow table and forwards the second video stream in the at least one video stream according to a matching result. The switching method provided by the embodiment of the application can realize the fast switching of the video stream by sending the video stream forwarding of the stream table control switch by the switching controller.
In order to implement the switching method according to the embodiment of the present application, an embodiment of the present application further provides a switching apparatus, which is applied to a switch. Fig. 3 is a schematic structural diagram of a switching device according to an embodiment of the present application, and as shown in fig. 3, the switching device 300 includes:
a first receiving unit 301, configured to receive at least one video stream sent by a video sending end and a first stream table sent by a switching controller; and
receiving the second flow table sent by the switching controller;
a forwarding unit 302, configured to match the at least one video stream with the first stream table, and forward a first video stream in the at least one video stream according to a matching result; and
matching the at least one video stream with the second flow table, and forwarding a second video stream of the at least one video stream according to a matching result;
a switching unit 303, configured to send a switching command to the switching controller in response to the switching request of the destination.
In order to implement the handover method according to the embodiment of the present application, a second handover device is further provided in the embodiment of the present application, and is applied to a handover controller. Fig. 4 is a schematic structural diagram of a second switching device according to an embodiment of the present application, and as shown in fig. 4, the switching device 400 includes:
a configuration unit 401, configured to configure a flow table file based on configuration information of a switch, where the flow table file includes a plurality of flow tables;
a second receiving unit 402, configured to receive a switch command sent by a switch, where the switch command is used to instruct to switch a flow table;
a sending unit 403 for sending the first flow table to the switch, an
The second flow table is sent to the switch based on a switch command of the switch.
In an embodiment, the configuration information includes message information and tunnel information corresponding to each video stream transmitted by the switch.
It should be understood by those skilled in the art that the implementation functions of the switching apparatus 300 applied to the switch shown in fig. 3 and the switching apparatus 400 applied to the switching controller shown in fig. 4 can be understood by referring to the foregoing description of the switching method applied to the switch and the switching method applied to the switching controller. The switch 300 applied to the switch shown in fig. 3 and the switch 400 applied to the switch controller shown in fig. 4 may be implemented by a program running on a processor, or may be implemented by a specific logic circuit.
It should be noted that: in the switch device 300 applied to the switch and the switch device 400 applied to the switch controller provided in the above embodiments, only the above-mentioned division of the program units is illustrated when flag detection and identification are performed, and in practical applications, the above-mentioned processing allocation may be completed by different program units according to needs, that is, the internal structure of the system may be divided into different program units to complete all or part of the above-mentioned processing. In addition, the embodiments of the switching apparatus 300 applied to the switch and the switching method applied to the switch provided in the above embodiments belong to the same concept, and the embodiments of the switching apparatus 400 applied to the switching controller and the switching method applied to the switching controller also belong to the same concept.
In order to further improve the IP degree of the broadcast television network, the video stream remote switching is realized through the intelligent terminal, and the embodiment of the application further provides a video net switching system. As shown in fig. 5, fig. 5 is a schematic structural diagram of a video net switching system provided in an embodiment of the present application, where the video net switching system 500 includes a terminal 501, an SDN controller 502, and a switch 503;
the terminal 501 is configured to obtain at least one of an import operation, a first trigger operation, and a second trigger operation; wherein the importing operation is configured to trigger the terminal 501 to import a flow table file to the SDN controller 502, where the flow table file is configured based on configuration information of a switch 503, and the flow table file contains multiple flow tables; the first trigger operation is used for triggering the terminal 501 to generate a matrix switching panel based on a plurality of video streams transmitted by a plurality of stream tables and the switch 503; the second trigger operation is used to trigger the terminal 501 to send a switching instruction to the switch 503 through the matrix switching panel;
the SDN controller 502 is configured to acquire and store a flow table file imported by the terminal 501;
the switch 503 is configured to obtain a switching instruction of the terminal 501, and forward a video stream indicated by the switching instruction.
The SDN is a novel network innovation architecture and is an implementation mode of network virtualization. The SDN separates the control plane and the data plane of the network device through the OpenFlow protocol used to connect the switch 503 and the controller, thereby implementing flexible control of network traffic, making the network more intelligent as a pipeline, and providing a good platform for innovation of the core network and application.
The SDN architecture is divided into a data plane, a control plane, and an Application plane from bottom to top (from south to north), and each plane communicates with another plane through an Application Programming Interface (API). The data plane is composed of network general hardware such as a switch 503 and the like, and the network general hardware is connected through SDN data channels formed by different rules; the control plane contains a SDN controller 502, which is centered on the control logic, and which grasps the global network information and is responsible for the control of various forwarding rules; the application plane contains various SDN-based network applications, and users can program and deploy new applications without concern for underlying details.
In the SDN, data forwarding is separated from rule control, the switch 503 gives the control right of forwarding rules to the SDN controller 502, and it forwards data packets only according to rules issued by the SDN controller 502. To avoid frequent interactions of switch 503 with the controller, the rules agreed upon by both parties are flow based and not per packet.
In the embodiment of the application, human-computer interaction is acquired through an application plane arranged on a terminal 501, for example, by acquiring an import operation, an SDN controller 502 acquires and stores a flow table file imported by the terminal 501; the matrix switching panel is generated by obtaining the first trigger operation, and the switching instruction is sent to the switch 503 through the matrix switching panel by obtaining the second operation, so that the remote switching of the video stream is realized, and the IP degree of the broadcast television network is further improved.
In order to facilitate user operations and improve user experience, the terminal 501 is further configured to display a user control interface, where the user control interface includes at least one of the following display interfaces:
the first display interface is used for displaying a flow table list corresponding to the flow table file, and the first display interface is triggered to display under the condition of obtaining the import operation or triggered to display under the condition of obtaining the import operation aiming at the first interaction control;
and the second display interface is used for displaying the matrix switching panel, and the second display interface is triggered to display under the condition of obtaining the first trigger operation or triggered to display under the condition of obtaining the first trigger operation aiming at the second interactive control.
The user operation can be fed back visually through the user control interface, so that the user can judge whether the operation is effective or not through the user control interface. Further, in order to verify the operation authority of the user, in this embodiment of the application, the terminal 501 is further configured to obtain a login operation, where the login operation is used to trigger the terminal 501 to log the target user in the SDN controller 502.
In the SDN, there are various ways to log in to the SDN controller 502, such as establishing a connection through an IP of the SDN controller 502. In the embodiment of the present application, a manner of logging in the SDN controller 502 through a browser or an application of the terminal 501 may be adopted.
Based on this, in an embodiment, the login operation is configured to trigger the terminal 501 to log in a target user to the SDN controller 502, and includes:
the login operation is used to trigger the terminal 501 to log a target user into the SDN controller 502 through a browser or an application.
In response, in order to facilitate the user to execute the login operation or the terminal 501 obtains the login operation, the terminal 501 is further configured to display a user control interface, where the user control interface has a third display interface for displaying the user login interface.
Further, if the remote switching of the video stream is to be realized, the video stream needs to be matched with a corresponding stream table. In this application, under the SDN architecture, a video stream transmitted by the switch 503 is associated with a tunnel sequence number on a matrix switching panel thereof. Therefore, the video stream can be matched with the corresponding stream table by the way that the user selects the tunnel serial number through the initialization operation of the matrix switching panel.
Based on this, in an embodiment, the terminal 501 is further configured to obtain a selection operation, where the selection operation is configured to trigger the terminal 501 to match the selected tunnel sequence number with the corresponding flow table based on the tunnel sequence number that needs to be matched with the flow table on the matrix switching panel.
In the process of displaying the user control interface, for example, when the second display interface for displaying the matrix switching panel is displayed, the terminal 501 may block the first display interface for displaying the flow table list corresponding to the flow table file, which brings inconvenience to the user operation.
To eliminate the above inconvenience, in an embodiment, the terminal 501 is further configured to obtain a selection operation, and the selection operation is configured to trigger the terminal 501 to display or not display a matrix switch panel.
As mentioned above, the header field in the flow table is used for matching with the video stream transmitted by the switch 503. Therefore, the configuration information of the switch 503 should include the message information and the tunnel information for parsing into tuple information.
Based on this, in an embodiment, the configuration information includes the message information and the tunnel information corresponding to each video stream transmitted by the switch 503.
Further, in order to increase the remote switching speed of the video stream, the stream table file is stored in the local memory of the terminal 501. When the user conducts import operation, the user can directly select the flow table file from the local storage to import.
In order to further understand the net video switching system according to the embodiment of the present application, the net video switching system according to the embodiment of the present application is further described with a specific application embodiment.
As shown in fig. 6, fig. 6 is a schematic structural diagram of a video net switching system according to an embodiment of the present application. The video net switching system 600 comprises an industrial personal computer 601, an SDN controller 602 and a switch 603.
The industrial personal computer 601 is optionally provided with an LCD industrial screen display, a drawer type keyboard, a touch pad and a mouse, and is convenient for acquiring and displaying user operation. Furthermore, the rated power of the power supply of the industrial personal computer 601 can be 300 watts, a cooling fan is arranged behind the host of the industrial personal computer 601, and the industrial personal computer is provided with a plurality of RTL8111E gigabit network ports and supports Windows and Linux operating systems. The size of the case of the industrial personal computer 601 can be selected from 430 × 552 × 178 mm to meet the installation requirements of a relay truck and Electronic Field Production (EFP for short), so that the terminal in the embodiment of the present application has a mobile function.
Further, the industrial personal computer 601 is configured to obtain at least one of the import operation, the first trigger operation, and the second trigger operation through an input device, such as at least one of a drawer-type keyboard, a touch pad, and a mouse.
The importing operation is used for triggering the industrial personal computer 601 to import a flow table file into the SDN controller 602, the flow table file is configured based on the configuration information of the switch 603, and the flow table file includes a plurality of flow tables. As shown in fig. 7, fig. 7 is a schematic diagram of an acquire import operation according to an embodiment of the present application. In fig. 7, the selection file may be selected from a stream table file stored in a local memory of the industrial personal computer 601; in fig. 7, the port information is the port information of the switch 603. Further, after the importing operation is acquired, a display device LCD industrial screen display of the industrial personal computer 601 may display a first display interface for displaying the flow table list corresponding to the flow table file. As shown in fig. 8, fig. 8 is a schematic diagram of a first display interface provided in an embodiment of the present application. In fig. 8, the flow0104.json and the match0104.json are flow table lists corresponding to the flow table files.
The first trigger operation is used for triggering the industrial personal computer 601 to generate a matrix switching panel based on a plurality of video streams transmitted by a plurality of stream tables and the switch 603; as shown in fig. 9, fig. 9 is a schematic diagram of acquiring a first trigger operation according to an embodiment of the present application. Specifically, in the application embodiment of the present application, the first trigger operation may be obtained by clicking the switch matrix generating button described in fig. 9 with a mouse or a touch pad. After the first trigger operation is obtained, a display device LCD industrial screen display of the industrial personal computer 601 can display a second display interface for displaying the matrix switching panel. As shown in fig. 10, fig. 10 is a schematic diagram of a second display interface provided in the application embodiment of the present application. In fig. 10, the matrix switching panel may be selectively displayed or not displayed by clicking a button of the listening keyboard in fig. 10 using a mouse or a touch pad.
The second trigger operation is used for triggering the industrial personal computer 601 to send a switching instruction to the switch 603 through the matrix switching panel; specifically, the tunnel sequence number on the matrix switching panel can be clicked by using a mouse or a touch panel.
The SDN controller 602 is configured to acquire and store a flow table file entered by the industrial personal computer 601;
the switch 603 is configured to obtain a switching instruction of the industrial personal computer 601, and forward a video stream indicated by the switching instruction.
In order to further improve the IP degree of the broadcast television network, the video stream remote switching is realized through the intelligent terminal, and the embodiment of the application further provides a video net switching method. As shown in fig. 11, fig. 11 is a schematic flowchart of a video net switching method according to an embodiment of the present application. The video net switching method comprises the following steps:
step 1101: importing a flow table file to an SDN controller through an importing operation trigger terminal, wherein the flow table file is configured based on configuration information of a switch and comprises a plurality of flow tables;
step 1102: triggering the terminal through a first triggering operation to generate a matrix switching panel based on the multiple flow tables and the video flow transmitted by the switch;
step 1103: triggering the terminal to send a switching instruction to the switch through the matrix switching panel through a second triggering operation;
step 1104: and forwarding the video stream corresponding to the switching instruction by the switch based on the switching instruction.
Typically, in practical applications, the video stream of the access switch is determined previously. Therefore, the message information and tunnel information corresponding to the video stream forwarded by the switch are also known. Therefore, the flow table may be configured in advance.
After a terminal is triggered to import a flow table file into an SDN controller through an import operation, the SDN controller acquires and stores the flow table file imported by the terminal; furthermore, as the tunnel sequence number on the matrix switching panel is associated with the video stream transmitted by the switch, the terminal can be triggered to send a switching instruction to the switch through the matrix switching panel through a second triggering operation, and then the video stream remote switching is realized through the intelligent terminal, so that the IP degree of the broadcast television network is further improved.
In order to verify the operation authority of the user, in this embodiment of the application, before the importing, by the import operation trigger terminal, a flow table file into the SDN controller, the method further includes:
and triggering the terminal to log in a target user to the SDN controller through login operation.
Further, if the remote switching of the video stream is to be realized, the video stream needs to be matched with a corresponding stream table. In this application, the video stream transmitted by the switch is associated with the tunnel sequence number on the matrix switching panel. Therefore, the video stream can be matched with the corresponding stream table by the way that the user selects the tunnel serial number through the initialization operation of the matrix switching panel.
Based on this, in an embodiment, after generating the matrix switching panel, the method further includes:
and triggering the terminal to match the selected tunnel sequence number with the corresponding flow table based on the tunnel sequence number needing to be matched with the flow table on the matrix switching panel through the selected operation.
Further, in order to avoid unnecessary shielding generated by the matrix switching panel, in an embodiment, after the matching the selected tunnel sequence number with the corresponding flow table, the method further includes:
and triggering the terminal to display or not display the matrix switching panel through the selected operation.
As described above, the header field in the flow table is used for matching with the video stream transmitted by the switch. Therefore, the configuration information of the switch should include the message information and the tunnel information for parsing into tuple information.
Based on this, in an embodiment, the configuration information includes packet information and tunnel information corresponding to each video stream transmitted by the switch.
Further, in order to improve the remote switching speed of the video stream, the stream table file is stored in a local memory of the terminal.
Based on the hardware implementation of the program unit, and in order to implement the handover method provided in the embodiment of the present application, an electronic device 1200 is further provided in the embodiment of the present application, as shown in fig. 12, where fig. 12 is a schematic diagram of a composition of the electronic device provided in the embodiment of the present application; the electronic device 1200 includes a processor 1201 and a memory 1202, where the memory 1202 is used for storing a computer program, and the processor 1201 is used for calling and running the computer program stored in the memory 1202 to execute the handover method provided in the embodiment of the present application or the video net handover method provided in the embodiment of the present application.
In practice, as shown in fig. 12, the various components of the electronic device 1200 are coupled together by a bus module 1203. It will be appreciated that the bus module 1203 is used to implement the connection communication between these components. The bus module 1203 includes a power bus, a control bus and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 12 as bus module 1203.
The embodiment of the present application further provides a computer-readable storage medium, which stores executable instructions, and when the executable instructions are executed by a processor, the switching method provided in the embodiment of the present application or the video net switching method provided in the embodiment of the present application is implemented.
In some embodiments, the computer-readable storage medium may be a Memory such as a magnetic random Access Memory (FRAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an erasable Programmable Read-Only Memory (EPROM), an electrically erasable Programmable Read-Only Memory (EEPROM), a Flash Memory (Flash Memory), a magnetic surface Memory, an optical disk, or a Compact Disc Read-Only Memory (CD-ROM); or may be various devices including one or any combination of the above memories.
In some embodiments, executable instructions may be written in any form of programming language (including compiled or interpreted languages), in the form of programs, software modules, scripts or code, and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.
By way of example, executable instructions may correspond, but do not necessarily have to correspond, to files in a file system, may be stored in a portion of a file that holds other programs or data, e.g., in one or more scripts stored in a hypertext markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub-programs, or portions of code).
As an example, executable instructions may be deployed to be executed on one computing device or on multiple computing devices located at one site or distributed across multiple sites and interconnected by a communication network.
It should be noted that: "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The technical solutions described in the embodiments of the present application may be arbitrarily combined without conflict.
In the several embodiments provided in the present application, it should be understood that the disclosed method and electronic device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit may be implemented in the form of hardware, or in the form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (27)
1. A switching method is applied to a switch and is characterized by comprising the following steps:
receiving at least one video stream sent by a video sending end and a first stream table sent by a switching controller;
matching the at least one video stream with the first stream table, and forwarding the first video stream in the at least one video stream according to a matching result;
responding to the switching request of the destination end, sending a switching command to the switching controller, and receiving a second flow table sent by the switching controller;
and matching the at least one video stream with the second flow table, and forwarding the second video stream in the at least one video stream according to a matching result.
2. The method according to claim 1, wherein after receiving at least one video stream transmitted by a video transmitting end, the method further comprises:
and carrying out message analysis on the at least one video stream, and extracting tuple information corresponding to each video stream.
3. The method of claim 2, wherein after extracting the tuple information corresponding to each video stream, the method further comprises:
and caching tuple information corresponding to each video stream.
4. The method according to claim 2 or 3, wherein said matching said at least one video stream with said first stream table comprises:
and matching the at least one video stream with a first stream table based on the tuple information corresponding to each video stream.
5. The method according to claim 2 or 3, wherein said matching said at least one video stream with said second stream table comprises:
matching the at least one video stream with a second stream table based on the tuple information corresponding to each video stream.
6. A switching method applied to a switching controller is characterized by comprising the following steps:
configuring a flow table file containing a plurality of flow tables based on configuration information of a switch;
sending a first flow table to a switch;
receiving a switching command sent by a switch, wherein the switching command is used for indicating switching of a flow table;
the second flow table is sent to the switch based on a switch command of the switch.
7. The method of claim 6, wherein the configuration information comprises packet information and tunnel information corresponding to each video stream transmitted by the switch.
8. A switching device applied to a switch is characterized by comprising:
the first receiving unit is used for receiving at least one video stream sent by the video sending end and a first stream table sent by the switching controller; and
receiving the second flow table sent by the switching controller;
a forwarding unit, configured to match the at least one video stream with the first stream table, and forward a first video stream in the at least one video stream according to a matching result; and
matching the at least one video stream with the second flow table, and forwarding a second video stream of the at least one video stream according to a matching result;
and the switching unit is used for responding to the switching request of the destination end and sending a switching command to the switching controller.
9. A switching device applied to a switching controller is characterized by comprising:
a configuration unit configured to configure a flow table file containing a plurality of flow tables based on configuration information of a switch;
a second receiving unit, configured to receive a switch command sent by a switch, where the switch command is used to instruct to switch a flow table;
a transmission unit for transmitting the first flow table to the switch, an
The second flow table is sent to the switch based on a switch command of the switch.
10. The apparatus of claim 9, wherein the configuration information comprises packet information and tunnel information corresponding to each video stream transmitted by the switch.
11. A video net switching system is characterized by comprising a terminal, a Software Defined Network (SDN) controller and a switch;
the terminal is used for acquiring at least one operation of an importing operation, a first triggering operation and a second triggering operation, wherein the importing operation is used for triggering the terminal to import a flow table file to the SDN controller, the flow table file is configured based on configuration information of a switch, and the flow table file comprises a plurality of flow tables; the first triggering operation is used for triggering the terminal to generate a matrix switching panel based on a plurality of video streams transmitted by a plurality of stream tables and a switch; the second trigger operation is used for triggering the terminal to send a switching instruction to the switch through the matrix switching panel;
the SDN controller is used for acquiring and storing a flow table file imported by the terminal;
and the switch is used for acquiring the switching instruction of the terminal and forwarding the video stream indicated by the switching instruction.
12. The system of claim 11,
the terminal is further used for displaying a user control interface, wherein the user control interface is provided with at least one of the following display interfaces:
the first display interface is used for displaying a flow table list corresponding to the flow table file, and the first display interface is triggered to display under the condition of obtaining the import operation or triggered to display under the condition of obtaining the import operation aiming at the first interaction control;
and the second display interface is used for displaying the matrix switching panel, and is triggered to display under the condition of obtaining the first trigger operation or triggered to display under the condition of obtaining the first trigger operation aiming at the second interactive control.
13. The system of claim 12,
the terminal is further configured to obtain a login operation, where the login operation is used to trigger the terminal to log a target user in the SDN controller.
14. The system of claim 13, wherein the login operation is configured to trigger the terminal to log a target user into the SDN controller, and comprises:
the login operation is used for triggering the terminal to log in a target user to the SDN controller through a browser or an application program.
15. The system of claim 14,
the terminal is further used for displaying a user control interface, wherein the user control interface is provided with a third display interface used for displaying a user login interface.
16. The system of claim 15,
the terminal is further used for obtaining selection operation, and the selection operation is used for triggering the terminal to match the selected tunnel sequence number with the corresponding flow table based on the tunnel sequence number needing to be matched with the flow table on the matrix switching panel.
17. The system of any one of claims 11-16,
the terminal is further used for obtaining selection operation, and the selection operation is used for triggering the terminal to display or not display the matrix switching panel.
18. The system according to any of claims 11-16, wherein said configuration information comprises packet information and tunnel information for each video stream transmitted by the switch.
19. The system of claim 18, wherein the flow table file is stored in a local memory of the terminal.
20. A method for net switching of video, comprising:
importing a flow table file into an SDN controller through an importing operation trigger terminal, wherein the flow table file is configured based on configuration information of a switch, and the flow table file comprises a plurality of flow tables;
triggering the terminal through a first trigger operation to generate a matrix switching panel based on the plurality of flow tables and the video flow transmitted by the switch;
triggering the terminal to send a switching instruction to the switch through the matrix switching panel through a second triggering operation;
and forwarding the video stream corresponding to the switching instruction by the switch based on the switching instruction.
21. The method of claim 20, wherein before the triggering the terminal to import the flow table file into the SDN controller through the importing operation, the method further comprises:
and triggering the terminal to log in a target user to the SDN controller through login operation.
22. The method of claim 21, wherein after generating the matrix switching panel, further comprising:
and triggering the terminal through the selected operation based on the tunnel sequence number needing to be matched with the flow table on the matrix switching panel, and matching the selected tunnel sequence number with the corresponding flow table.
23. The method according to any of claims 20-22, wherein after matching the selected tunnel sequence number with the corresponding flow table, further comprising:
and triggering the terminal to display or not display the matrix switching panel through the selected operation.
24. The method according to any of claims 20-22, wherein said configuration information comprises message information and tunnel information for each video stream transmitted by the switch.
25. The method of claim 24, wherein the flow table file is stored in a local memory of the terminal.
26. An electronic device comprising a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory, to perform the method of any of claims 1-5, or the method of any of claims 6-7, or the method of any of claims 20-25.
27. A computer-readable storage medium storing executable instructions, wherein the executable instructions, when executed by a processor, implement the method of any of claims 1-5, or the method of claims 6-7, or the method of any of claims 20-25.
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