CN114598825B - Video and audio signal scheduling method and device, computer equipment and readable storage medium - Google Patents
Video and audio signal scheduling method and device, computer equipment and readable storage medium Download PDFInfo
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Abstract
The embodiment of the application provides a video and audio signal scheduling method, a device, computer equipment and a readable storage medium, comprising the following steps: firstly, obtaining video and audio group signals obtained according to the overlapping relation among a plurality of video and audio signals to be processed; and forwarding the video and audio group signals between each leaf node and the ridge node by using the first signal flow table, the second signal flow table, the third signal flow table and the fourth signal flow table so as to realize the scheme of outputting the video and audio group signals.
Description
Technical Field
The present application relates to broadcasting technology, and in particular, to a method, apparatus, computer device, and readable storage medium for scheduling video and audio signals.
Background
In the current television station system broadcasting network scene under the IP matrix frame, for example, in a studio, the signals shot by the camera (video+audio (1-n) +auxiliary data) are sent to a switching station, a recording server, a monitor and the like in a multicast mode, and a plurality of signal groups can be defined by the manufactured signals according to service requirements so as to be sent to corresponding devices. Each signal group typically includes the same video stream, but the audio stream and the auxiliary stream differ, and therefore these signal groups are all forwarded. In this way, even if the same video stream exists in each signal stream or the same audio stream and auxiliary stream exist between every two signal streams, each signal group needs to be forwarded, and a corresponding signal stream table needs to be made for issuing. Whether the signal group is forwarded for multiple times or the signal flow table corresponding to the signal groups is issued, a large amount of bandwidth is wasted to process repeated tasks. With the application of 4K video and audio streams, the problem of wasted bandwidth cannot be ignored.
Disclosure of Invention
The embodiment of the application provides a video and audio signal scheduling method, a video and audio signal scheduling device, computer equipment and a readable storage medium.
In a first aspect, an embodiment of the present application provides a video/audio signal scheduling method, which is applied to a matrix controller in a video/audio signal scheduling system, where the video/audio signal scheduling system further includes a spine node and a plurality of leaf nodes, the matrix controller is communicatively connected to the spine node and the plurality of leaf nodes, and the spine node is communicatively connected to the plurality of leaf nodes, and the method includes:
Acquiring a plurality of video and audio signals to be processed, and acquiring video and audio group signals which are full signals according to the overlapping relation among the video and audio signals to be processed;
Determining a first leaf node and a second leaf node from a plurality of leaf nodes according to the video and audio group signals, wherein the first leaf node is a video and audio group signal inflow node, and the second leaf node is a video and audio group signal outflow node;
Establishing a first signal flow table on the first leaf node so that the video and audio group signals are input into the first leaf node;
establishing a second signal flow table on the first leaf node and the ridge node so that the video and audio group signals are forwarded from the first leaf node to the ridge node;
Establishing a third signal flow table on the spine node and the second leaf node to enable the video and audio group signals to be forwarded from the spine node to the second leaf node;
A fourth signal flow table is established on the second leaf node to cause the audio-visual group signal to be output from the second leaf node.
In one possible embodiment, the video-audio signal scheduling system further comprises a media controller communicatively coupled to the matrix controller, the media controller determining a first leaf node and a second leaf node from the plurality of leaf nodes based on the video-audio group signal, comprising:
receiving a service generation request corresponding to the video and audio group signal sent by a media controller; the service generation request comprises an input signal flow group, an input device identifier, an input port identifier, an output device identifier and an output port identifier;
determining a first leaf node from a plurality of leaf nodes according to the input device identification;
Determining a second leaf node from the plurality of leaf nodes according to the output equipment identifier;
establishing a first signal flow table on the first leaf node to enable the video and audio group signals to be input into the first leaf node, comprising:
generating a first signal flow table according to the input signal flow group, the input device identifier and the input port identifier;
The first signal flow table is issued to a port corresponding to the input port identifier of the first leaf node, so that the video and audio group signals are input through the port corresponding to the input port identifier;
Establishing a fourth signal flow table on the second leaf node to enable the audio-visual group signal to be output from the second leaf node, comprising:
Generating a fourth signal flow table according to the input signal flow group, the output equipment identifier and the output port identifier;
And transmitting the fourth signal flow table to a port corresponding to the output port identifier of the second leaf node so as to enable the video and audio group signals to be output from the port corresponding to the output port identifier.
In one possible implementation, a second signal flow table is established on the first leaf node and the spine node to cause the video-audio group signal to be forwarded from the first leaf node to the spine node, comprising:
in the case that an idle physical link exists between the first leaf node and the spine node, a second signal flow table is established based on the idle physical link so that the video and audio group signal is forwarded from the first leaf node to the spine node.
In one possible embodiment, determining the first leaf node and the second leaf node from the plurality of leaf nodes according to the audio-visual group signal further comprises:
the input signal stream group is issued to the spine node and the plurality of leaf nodes.
In one possible implementation manner, the input signal flow group includes a first signal flow group and a second signal flow group, the output port identifier includes a first output port identifier and a second output port identifier, the first signal flow group and the first output port identifier have a corresponding relationship, and the second signal flow group and the second output port identifier have a corresponding relationship;
Establishing a fourth signal flow table on the second leaf node to enable the audio-visual group signal to be output from the second leaf node, comprising:
And issuing a fourth signal flow table at the first port corresponding to the second leaf node and the first output port identifier and the second port corresponding to the second leaf node and the second output port identifier so that the first signal flow group is output from the first port and the second signal flow group is output from the second port.
In one possible implementation, the video and audio signal scheduling system further includes a third leaf node, and the method further includes:
Establishing a fifth signal flow table on the ridge node and the second leaf node so that the video and audio group signals are forwarded from the ridge node to the third leaf node;
a sixth signal flow table is established on the third leaf node to enable the audio and video group signals to be output from the third leaf node.
In a possible implementation manner, the input signal flow group includes a first signal flow group and a second signal flow group, the output device identifier includes a first output device identifier and a second output device identifier, the output port identifier includes a first output port identifier and a second output port identifier, a corresponding relationship exists among the first signal flow group, the first output device identifier and the first output port identifier, and a corresponding relationship exists among the second signal flow group, the second output device identifier and the second output port identifier;
Establishing a fourth signal flow table on the second leaf node to enable the audio-visual group signal to be output from the second leaf node, comprising:
establishing a fourth signal flow table at a first output port identifier of the second leaf node determined according to the first output device identifier, so that the first signal flow group is output from a port corresponding to the first output port identifier;
establishing a sixth signal flow table on the third leaf node to enable the audio-visual group signal to be output from the third leaf node, comprising:
and establishing a sixth signal flow table at a second output port identifier of the third leaf node determined according to the second output device identifier, so that the second signal flow group is output from a port corresponding to the second output port identifier.
In a second aspect, an embodiment of the present application provides an audio-video signal scheduling apparatus, which is applied to a matrix controller in an audio-video signal scheduling system, where the audio-video signal scheduling system further includes a spine node and a plurality of leaf nodes, the matrix controller is communicatively connected with the spine node and the plurality of leaf nodes, and the spine node is communicatively connected with the plurality of leaf nodes, and the apparatus includes:
the acquisition module is used for acquiring a plurality of video and audio signals to be processed, and acquiring video and audio group signals according to the overlapping relation among the video and audio signals to be processed; the video and audio group signals are full-quantity signals;
A determining module for determining a first leaf node and a second leaf node from a plurality of leaf nodes according to the video and audio group signal; the first leaf node is a video and audio group signal inflow node, and the second leaf node is a video and audio group signal outflow node;
The scheduling module is used for establishing a first signal flow table on the first leaf node so that the video and audio group signals are input into the first leaf node; establishing a second signal flow table on the first leaf node and the ridge node so that the video and audio group signals are forwarded from the first leaf node to the ridge node; establishing a third signal flow table on the spine node and the second leaf node to enable the video and audio group signals to be forwarded from the spine node to the second leaf node; a fourth signal flow table is established on the second leaf node to cause the audio-visual group signal to be output from the second leaf node.
In a third aspect, an embodiment of the present application provides a computer device, where the computer device includes a processor and a nonvolatile memory storing computer instructions, and when the computer instructions are executed by the processor, the computer device performs the video and audio signal scheduling method according to any one of at least one possible implementation manner of the first aspect.
In a fourth aspect, an embodiment of the present application provides a readable storage medium, where the readable storage medium includes a computer program, where the computer program controls a computer device where the readable storage medium is located to execute the method for scheduling an audio and video signal according to any one of at least one possible implementation manner of the first aspect.
By adopting the video and audio signal scheduling method, the video and audio signal scheduling device, the computer equipment and the readable storage medium provided by the embodiment of the application, the video and audio group signals which are full signals are obtained; and forwarding the video and audio group signals between each leaf node and the ridge node by using the first signal flow table, the second signal flow table, the third signal flow table and the fourth signal flow table so as to realize the scheme of outputting the video and audio group signals.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
Fig. 1 is a schematic view of a scene interaction of a video/audio signal scheduling system according to an embodiment of the present application;
fig. 2 is a flowchart illustrating a step of a method for scheduling audio and video signals according to an embodiment of the present application;
Fig. 3 is another schematic view of scene interaction of the video/audio signal scheduling system according to the embodiment of the present application;
fig. 4 is a flowchart illustrating another step of the scheduling method of audio and video signals according to an embodiment of the present application;
Fig. 5 is a schematic block diagram of an audio-video signal scheduling apparatus for performing the audio-video signal scheduling method of fig. 2 according to an embodiment of the present application;
fig. 6 is a schematic block diagram of a computer device for performing the scheduling method of the video and audio signals in fig. 2 according to an embodiment of the present application.
Detailed Description
In the process of implementing the present application, the inventor finds that under the existing framework of the television station multicast network, the manufactured signals define a plurality of signal groups, the plurality of signal groups are all forwarded, and the corresponding signal flow tables are issued to the corresponding nodes, however, whether there are a large number of repeated data flows and table entries between the signal groups or between the signal flow tables, this operation can cause a large amount of bandwidth waste, and under the condition that the 4K video/audio frequency requirement is increased, too much bandwidth waste becomes a non-negligible problem.
In view of the above problems, embodiments of the present application provide a method, an apparatus, a computer device, and a readable storage medium for scheduling video and audio signals, where first, video and audio group signals obtained according to an overlapping relationship between a plurality of video and audio signals to be processed are obtained; the first signal flow table, the second signal flow table, the third signal flow table and the fourth signal flow table are utilized to forward the video and audio group signals between each leaf node and the spine node so as to realize the scheme of outputting the video and audio group signals.
The scheme in the embodiment of the application can be realized by adopting various computer languages, such as object-oriented programming language Java, an transliteration script language JavaScript and the like.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
Referring to fig. 1 in combination, fig. 1 is a schematic view of scene interaction of an audio-video signal scheduling system according to an embodiment of the present application. The audio-visual signal scheduling system may include a matrix controller 10, a spine node 20 communicatively coupled to the matrix controller 10, and a plurality of leaf nodes 30, the spine node 20 communicatively coupled to the plurality of leaf nodes 30. In the embodiment of the application, an external media system can send out video and audio group signals to a video and audio signal scheduling system so as to distribute the video and audio group signals to devices such as a switching station, a recording server, a monitor and the like in a multicast mode, wherein the external media system can refer to a video station system broadcasting network scene such as a studio, a rebroadcasting vehicle or a mobile outfield and the like, and the devices such as the switching station, the recording server, the monitor and the like are accessed to the video and audio signal scheduling system through a leaf node 30 so as to be capable of correspondingly processing the video and audio group signals. In other implementations of the embodiments of the present application, the audio-visual signal scheduling system may be formed of more or fewer components, which is not limited herein.
Referring to fig. 2 in combination, fig. 2 is a schematic flow chart illustrating steps of a video/audio signal scheduling method according to an embodiment of the present application, where the video/audio signal scheduling method may be implemented by using the matrix controller 10 in fig. 1 as an execution body. The audio and video signal scheduling method will be described in detail.
Step S201, a plurality of video and audio signals to be processed are obtained, and video and audio group signals are obtained according to the overlapping relation among the video and audio signals to be processed.
The video and audio group signal is a full signal.
Step S202, determining a first leaf node 301 and a second leaf node 302 from a plurality of leaf nodes 30 according to the audio-visual group signal.
The first leaf node 301 is an audio-video group signal inflow node, and the second leaf node 302 is an audio-video group signal outflow node.
In step S203, a first signal flow table is established on the first leaf node 301, so that the audio-video group signal is input to the first leaf node 301.
In step S204, a second signal flow table is established on the first leaf node 301 and the ridge node 20 so that the video and audio group signal is forwarded from the first leaf node 301 to the ridge node 20.
In step S205, a third signal flow table is established on the spine node 20 and the second leaf node 302 to cause the audio-visual group signal to be forwarded from the spine node 20 to the second leaf node 302.
In step S206, a fourth signal flow table is established on the second leaf node 302, so that the audio and video group signal is output from the second leaf node 302.
In the embodiment of the present application, the Spine node 20 included in the video and audio signal scheduling system refers to Spine in a Spine-to-Spine network architecture (Spine-Leaf), the Leaf node 30 refers to Leaf in the Spine-to-Spine network architecture, and the first Leaf node 301 may be determined according to the video and audio group signal, where the first Leaf node 301 is used as an edge device of the video and audio signal scheduling system and is responsible for receiving the video and audio signal sent from the outside to the video and audio signal scheduling system. After determining the second leaf node 302 from the plurality of leaf nodes 30 according to the audio group signal, the matrix controller 10 may establish a signal flow table on the leaf node 30 and the ridge node 20 concerned, so that each leaf node 30 and the ridge node 20 can process the audio and video signal according to all the signal flow tables, where the number of the second leaf nodes 302 may be one or more, and is not limited herein.
It should be understood that in the embodiment of the present application, the number of the to-be-processed video and audio signals may be the number that needs to be forwarded to the media device, for example, the video and audio signal scheduling system needs to forward the signals to devices such as a switching station, a recording server, and a monitor, and then there may be three to-be-processed video and audio signals for the devices such as the switching station, the recording server, and the monitor, and each to-be-processed video and audio signal input from the outside may include a video stream, an audio stream, and auxiliary data. The video/audio group signal is a full-scale signal, and the video/audio signal scheduling system will make all the video/audio signals to be processed according to the overlapping relationship of the signal flow groups and the distribution condition of the output leaf nodes 30 to obtain a full-scale signal, i.e. the video/audio group signal in the scheme. For example, there are two audio and video signals to be processed, audio and video signal 1 to be processed (video 1:228.0.0.1, audio 1:229.0.0.1, auxiliary data 1:230.0.0.1), and Leaf2 and audio and video signal 2 to be processed (video 1:228.0.1, audio 1:229.0.1, audio 2:229.0.2, auxiliary data 1:230.0.0.1), and Leaf3. As described previously, the analysis can be performed on the basis of the multicast address, and the video stream and the auxiliary stream can be found to be repetitive, while the output Leaf node 30 of the video-audio signal to be processed can be considered in combination, and the output from Leaf nodes represented by Leaf2 and Leaf3, respectively, can be known, and a full signal can be obtained that includes at least the following information: (video 1:228.0.0.1, audio 1:229.0.0.2, audio 2:229.0.0.2, auxiliary data 1:230.0.0.1), to yield Leaf2, to yield Leaf3. I.e. the full signal retains only one copy of the repeated data.
Then, the video and audio group signals can be input into the video and audio signal scheduling system through the first leaf node 301, and the related leaf node 30 and the spine node 20 are utilized to establish a signal flow table to correspondingly forward the total signals (i.e. the video and audio group signals), so that each signal included in the total signals is forwarded to a corresponding part, and the repeated signals between the related leaf node 30 and the spine node 20 can be forwarded only by one transmission, namely only one bandwidth is occupied, thereby solving the problem that a plurality of signals need to respectively establish the flow table, and a large amount of bandwidth is occupied.
In a possible implementation, referring to fig. 3 in combination, the audio-video signal scheduling system further includes a media controller 40, where the media controller 40 is communicatively connected to the matrix controller 10; the aforementioned step S202 may be implemented by the following detailed steps.
In one possible implementation, the aforementioned step S202 may be performed by the following steps.
Step S202-1, the receiving media controller 40 sends a service generation request corresponding to the video and audio group signal; the service generation request comprises an input signal flow group, an input device identifier, an input port identifier, an output device identifier and an output port identifier;
In a substep S202-2, a first leaf node 301 is determined from a plurality of leaf nodes 30 based on the input device identification.
In a substep S202-3, a second leaf node 302 is determined from the plurality of leaf nodes 30 based on the output device identification.
Accordingly, the aforementioned step S203 may be implemented by the following detailed steps.
Step S203-1, a first signal flow table is generated according to the input signal flow group, the input device identifier and the input port identifier;
In the substep S203-2, the first signal flow table is issued to the port corresponding to the input port identifier of the first leaf node 301, so that the video and audio group signal is input through the port corresponding to the input port identifier.
Accordingly, the aforementioned step S206 may be performed by the following detailed steps.
Step S206-1, generating a fourth signal flow table according to the input signal flow group, the output equipment identifier and the output port identifier;
In the substep S206-2, the fourth signal flow table is issued to the port corresponding to the output port identifier of the second leaf node 302, so that the video and audio group signal is output from the port corresponding to the output port identifier.
In an embodiment of the present application, the media controller 40 may be configured to define the video and audio group signal according to a received user instruction, and specifically may define an input signal stream group, an input device identifier, an input port identifier, an output device identifier, and an output port identifier corresponding to the video and audio group signal. The input signal stream group may refer to signal content that needs to be retransmitted and scheduled by the video and audio signal scheduling system, and specifically may include a video signal, an audio signal, and an auxiliary signal. The input device identifier may be a device identifier corresponding to the first leaf node 301 of the audio-video group signal input audio-video scheduling system, or may be a device identifier of an edge device communicatively connected to the first leaf node 301 and used for receiving the audio-video group signal, which is not limited herein. The input port identifier may refer to a port identifier corresponding to a port located on the first leaf node 301 corresponding to the input device identifier and used for receiving the input signal stream group, and the output device identifier may refer to a device identifier of the second leaf node 302 or a device identifier of a media device corresponding to the second leaf node 302, where the second leaf node 30 needs to output video signals, audio signals and auxiliary signals in the signal stream group, which is not limited herein. The output device identification may refer to a port identification corresponding to a port located on the second leaf node 302 that needs to output video signals, audio signals, and auxiliary signals in the input signal stream group.
In order to more clearly describe the solution provided by the embodiments of the present application, the foregoing embodiments are described below by way of example. In an embodiment of the present application, the media controller 40 may define the following entries (i.e., entries corresponding to the video and audio group signals): matrix signal 1{ video, audio 1, auxiliary data }, ingress Leaf1+ ingress port 1, egress Leaf2+ egress port 1 to matrix controller 10, matrix controller 10 determines first Leaf node 301 from ingress Leaf1 (input device identification) and further determines the corresponding signal for ingress matrix signal 1{ video, audio 1, auxiliary data } at first Leaf node 301 from port 1 (input port identification), it being understood that in this case only one set of signals in the signal stream group, i.e. the video and audio signal corresponding to matrix signal 1, then determines second Leaf node 302 from the plurality of Leaf nodes 30 from the output device identification and further determines the port for egress of the corresponding signal for matrix signal 1 at second Leaf node 302 from egress port 1, and so on, the matrix controller 10 may create a signal flow table at the ports involved in the spine node 20 and the Leaf node 30 in the video and audio scheduling system constructed based on the switching matrix, so as to implement that the signal corresponding to the matrix signal 1 is input through the first signal flow table (at least including the matrix signal 1, the ingress leaf1+ingress port 1 and the egress leaf2+egress port 1) and the port corresponding to the ingress port 1 on the first Leaf node 301, then the signal corresponding to the matrix signal 1 is forwarded to the spine node 20 from the first Leaf node 301 through the second signal flow table (at least including the matrix signal 1 and the egress leaf2+egress port 1), after the spine node 20 receives the matrix signal 1, the signal corresponding to the matrix signal 1 may be forwarded to the second Leaf node 302 according to the third signal flow table (at least including the matrix signal 1 and the egress leaf2+egress port 1) established between the second Leaf nodes 302, after receiving the signal corresponding to the matrix signal 1, the second leaf node 302 may output the signal corresponding to the matrix signal 1 from the output port 1 on the second leaf node 302 according to a fourth signal flow table (at least including the matrix signal 1 and the output port 1). It should be understood that, in the embodiment of the present application, the input signal stream group may include more audio and video signals besides the signals corresponding to the matrix signal 1, and correspondingly, the input device identifier, the input port identifier, the output device identifier and the output port identifier corresponding to other matrix signals may be defined.
In one possible implementation, the aforementioned step S204 may be performed by the following steps.
In the case where there is an idle physical link between the first leaf node 301 and the spine node 20, a second signal flow table is established based on the idle physical link so that the video and audio group signal is forwarded from the first leaf node 301 to the spine node 20, substep S204-1.
In the embodiment of the present application, communication connection between the first leaf node 301 and the spine node 20 may be implemented through at least one physical link, and when a second signal flow table needs to be established between the first leaf node 301 and the spine node 20, it may be first determined whether an idle physical link exists between the first leaf node 301 and the spine node 20, if so, based on the idle physical link, the second signal flow table is correspondingly established at a port in an outgoing direction of the first leaf node 301 and an incoming direction of the spine node 20, so that the first leaf node 301 can forward the audio and video group signal to the spine node 20.
Accordingly, the connection between the second leaf node 302 and the spine node 20 may also be implemented by the connection relationship between the first leaf node 301 and the spine node 20, which is not described herein. In addition, the connection manner between the first leaf node 301 and the second leaf node 302 and the spine node 20 may be invoked according to a preset planning policy, for example, priority classification may be performed on each task, even if no idle physical link exists between the current first leaf node 301 and the spine node 20, since the current task level is high, tasks with other low task levels may be suspended, so as to provide an idle physical link to enable the first leaf node 301 and the spine node 20 to perform signal forwarding of the current task.
In one possible embodiment, the foregoing step S202 may further include the following embodiments.
Substep S202-4, the set of input signal streams is issued to the spine node 20 and the plurality of leaf nodes 30.
It should be understood that, in the embodiment of the present application, since the video and audio signals are full-scale signals, in order to enable each node in the video and audio scheduling system to completely receive the video and audio signals, subsequent scheduling or signal switching is facilitated, the input signal stream group corresponding to the video and audio signals may be issued to all the involved leaf nodes 30 and spine nodes 20.
In one possible implementation manner, the input signal flow group includes a first signal flow group and a second signal flow group, the output port identifier includes a first output port identifier and a second output port identifier, the first signal flow group and the first output port identifier have a corresponding relationship, and the second signal flow group and the second output port identifier have a corresponding relationship; the aforementioned step S206 may be implemented by the following embodiments.
In the substep S206-2, the fourth signal flow table is issued at the first port corresponding to the first output port identifier and the second port corresponding to the second output port identifier of the second leaf node 302, so that the first signal flow group is output from the first port, and the second signal flow group is output from the second port.
As previously described, the input signal stream group may be plural, and examples of when plural signal stream groups exist and different signal stream groups are output at different ports of the same leaf node 30 are described below.
In this case, media controller 40 may post the following: matrix signal 1{ video, audio 1, audio 2, auxiliary data }, into Leaf1+ in port 1, out Leaf2+ out port 1+ out port 2 to matrix controller 10, it should be understood that the original set of video and audio signals is composed of two signals, (video 1:228.0.0.1, audio 1:229.0.0.1, auxiliary data 1:230.0.0.1) and (video 1:228.0.0.1, audio 2:229.0.0.2, auxiliary data 1:230.0.0.1), as described above, the video stream and auxiliary stream are found to be repetitive based on the multicast address, and the full signal video 1 is obtained: 228.0.0.1, audio 1:229.0.0.2, audio 2:229.0.0.2, auxiliary data 1:230.0.0.1 The aforementioned entries can be obtained: matrix signal 1{ video, audio 1, audio 2, auxiliary data }, in leaf1+ in port 1, out leaf2+ out port 1+ out port 2.
Based on this, a port a corresponding to "out port 1" and a port B corresponding to "out port 2" may be determined on the second leaf node 302, and then a fourth signal flow table may be constructed, in which case the fourth signal flow table may include an output flow table for port a and an output flow table for port B, the output flow table for port a may include { video, audio 1, auxiliary data }, the output flow table for port B may include { video, audio 2, auxiliary data }, and accordingly, signals may be output at port a (video 1:228.0.1, audio 1:229.0.0.1, auxiliary data 1:230.0.0.1), and signals may be output at port B (video 1:228.0.0.1, audio 2:229.0.0.2, auxiliary data 1:230.0.0.1).
In a possible implementation, referring to fig. 3 and fig. 4 in combination, the video/audio signal scheduling system further includes a third leaf node 303, and the embodiment of the present application further provides an example in which the video/audio group signal is output from the third leaf node 303, please refer to the following steps.
In step S207, a fifth signal flow table is established on the ridge node 20 and the second leaf node 302, so that the audio-visual group signal is forwarded from the ridge node 20 to the third leaf node 303.
In step S208, a sixth signal flow table is established on the third leaf node 303, so that the audio and video group signal is output from the third leaf node 303.
In a possible implementation manner, the input signal flow group includes a first signal flow group and a second signal flow group, the output device identifier includes a first output device identifier and a second output device identifier, the output port identifier includes a first output port identifier and a second output port identifier, a corresponding relationship exists among the first signal flow group, the first output device identifier and the first output port identifier, and a corresponding relationship exists among the second signal flow group, the second output device identifier and the second output port identifier; the aforementioned step S206 may be implemented by the following detailed steps.
In a substep S206-3, a fourth signal flow table is established at the first output port identifier of the second leaf node 302 determined according to the first output device identifier, so that the first signal flow group is output from the port corresponding to the first output port identifier.
Accordingly, the foregoing step S208 may be implemented by the following example.
In a substep S208-1, a sixth signal flow table is established at the second output port identifier of the third leaf node 303 determined according to the second output device identifier, so that the second signal flow group is output from the port corresponding to the second output port identifier.
In the embodiment of the present application, as described above, in addition to the case where there are a plurality of signal flow groups and different signal flow groups are output at different ports of the same leaf node 30, there are a plurality of signal flow groups and different signal flow groups are output at different ports of the leaf node 30, which is exemplified below.
In this case, media controller 40 may post the following: matrix signal 1{ video, audio 1, audio 2, auxiliary data }, in leaf1+ in port 1, out leaf2+ out port 2 to matrix controller 10, it should be understood that the original set of video and audio signals is composed of two signals, (video 1:228.0.0.1, audio 1:229.0.0.1, auxiliary data 1:230.0.0.1) and (video 1:228.0.0.1, audio 1:229.0.0.1, audio 2:229.0.0.2, auxiliary data 1:230.0.1), as described above, can be analyzed according to multicast address, it is found that the video stream and auxiliary stream are repeated, and the full signal video 1 can be obtained: 228.0.0.1, audio 1:229.0.0.2, audio 2:229.0.0.2, auxiliary data 1:230.0.0.1 The aforementioned entries can be obtained: matrix signal 1{ video, audio 1, audio 2, auxiliary data }, in leaf1+ in port 1, out leaf2+ out port 2.
Based on this, a port a corresponding to "out port 1" may be determined on the second leaf node 302, and a port B corresponding to "out port 2" may be determined on the third leaf node 303, and then a fourth signal flow table may be built on the port a and a sixth signal flow table may be built on the port B, respectively, in which case the fourth signal flow table may include an output flow table { video, audio 1, auxiliary data } for the port a, the sixth signal flow table may include an output flow table { video, audio 2, auxiliary data } for the port B, and accordingly, a signal may be output at the port a of the second leaf node 302 (video 1:228.0.0.1, audio 1:229.0.0.1, auxiliary data 1:230.0.0.1), and a signal may be output at the port B of the third leaf node 303 (video 1:228.0.0.1, audio 1:229.0.1, audio 2:229.0.0.2, auxiliary data:230.0.1).
In order to more clearly describe the solution provided by the embodiments of the present application, a more detailed example of the solution provided by the embodiments of the present application is described below.
The master control (SoftwareDefinedSoftware, SDN controller) prepares to receive and rebroadcast the signals produced by the studio, the video-audio signal scheduling system based on the IP matrix maintained by the master control starts to prepare to receive the signals, the model is defined according to service requirements by the media controller 40, for example, the signals need to be rebroadcast to an IP gateway, an IP score and an IP monitor under the master control, wherein the IP gateway is in communication connection with the second leaf node 302, the IP score is in communication connection with the second leaf node 302, the IP monitor is in communication connection with the third leaf node 303, and the IP gateway needs video streaming: 228.0.0.1 and audio stream: 229.0.0.1; IP painting requires video streaming: 228.0.0.1 and audio stream: 229.0.0.2, IP monitor requires video streaming: 228.0.0.1, audio stream: 229.0.0.1, 229.0.0.2, 229.0.0.3 and auxiliary flow: 230.0.0.1, after analysis according to the output device and the multicast address, a total signal (i.e. video/audio group signal) { video, audio 1, audio 2, audio 3, auxiliary data }, which can be defined by the media controller 40, is obtained, and such table entries are issued to the matrix controller 10: matrix signal 1{ video, audio 1, audio 2, audio 3, auxiliary data }, in leaf1+ in port 1, out leaf2+ out port 1+ out port 2, out leaf3+ out port 3.Defined master control (Network)
According to the above information, the first Leaf node 301 may be determined according to "ingress Leaf1" (i.e. input device identifier), and a first signal flow table may be issued at a port corresponding to "ingress port 1" (i.e. input port identifier) on the first Leaf node 301, where the first signal flow table may be issued to a port corresponding to "ingress port 1" after being manufactured by the matrix controller 10, and the first signal flow table at least includes { video, audio 1, audio 2, audio 3, auxiliary data } and a port address of a port corresponding to "ingress port 1", and the first Leaf node 301 may match the input full signal through the first signal flow table and receive the full signal to the video and audio signal scheduling system.
After the first node 30 successfully receives the full signal, after the communication connection is successfully established between the first node 30 and the spine node 20 by using the idle physical link, a second signal flow table is established between the outgoing direction of the first node 30 and the incoming direction of the spine node 20, where the second signal flow table at least includes { video, audio 1, audio 2, audio 3, auxiliary data } and a port address where the first node 301 outputs the full signal and a port address where the spine node 20 receives the full signal, and based on the second signal flow table, the full signal may be forwarded to the spine node 20.
On receipt of the full signal by the spine node 20, a communication connection may be established with the second leaf node 302 and the third leaf node 303 using physical links, respectively, and the manner and principle of establishment may be referred to the manner of establishing a communication connection between the spine node 20 and the first leaf node 301, and may be implemented based on the third signal flow table and the fifth signal flow table, respectively, so that the full signal may be forwarded to the second leaf node 302 and the third leaf node 303.
On the basis that the second Leaf node 302 receives the full signal, since the second Leaf node 302 is in communication connection with the IP gateway and the IP score at the same time, and the signal flows required by the IP gateway and the IP score are not identical, two fourth signal flow tables can be issued by the matrix controller 10, wherein the fourth signal flow table 1 at least comprises { video and audio 1}, and the output Leaf2+ output port 1; the fourth signal flow table 2 includes at least { video and audio 2}, output Leaf2+ output port 2. Video streams in the full signal are recorded according to the fourth signal stream table 1: 228.0.0.1 and audio stream: 229.0.0.1 input from the port corresponding to "out port 2", i.e. input to the IP gateway, the video streams in the full signal are according to the fourth signal stream table 2: 228.0.0.1 and audio stream: 229.0.0.2 is input from the port corresponding to the "out port 2", namely, input into the IP drawing.
On the basis that the third Leaf node 303 receives the full signal, a sixth signal flow table issued by the matrix controller 10 may be received, where the sixth signal flow table includes at least { video, audio 1, audio 2, audio 3, auxiliary data }, and outputs Leaf 3+output port 3. The third leaf node 303 may stream video in the full signal based on the sixth signal stream table: 228.0.0.1, audio stream: 229.0.0.1, 229.0.0.2, 229.0.0.3 and auxiliary flow: 230.0.0.1 output through the port corresponding to "out port 3", i.e., output the IP monitor.
The full-volume signal is forwarded to the IP gateway, the IP score and the IP monitor, and the traffic forwarding is performed only once between each leaf node 30 and the spine node 20, which occupies a part of bandwidth, i.e. the full-volume input signal is copied only once as a stream when going to the same output leaf node 30. In the scheme provided by the embodiment of the application, when operations such as signal switching or audio stream adding are performed, only the input stream table and the output interface stream table (e.g. the first signal stream table and the fourth signal stream table) are changed, and the implementation can be realized without changing the intermediate stream table (e.g. the second signal stream table).
The embodiment of the present application provides an audio-video signal scheduling device 110, which is applied to a matrix controller 10 in an audio-video signal scheduling system, the audio-video signal scheduling system further includes a spine node 20 and a plurality of leaf nodes 30, the matrix controller 10 is communicatively connected with the spine node 20 and the plurality of leaf nodes 30, the spine node 20 is communicatively connected with the plurality of leaf nodes 30, please refer to fig. 5 in combination, the audio-video signal scheduling device 110 includes:
the obtaining module 1101 is configured to obtain a plurality of audio-video signals to be processed, and obtain an audio-video group signal according to an overlapping relationship between the plurality of audio-video signals to be processed; the video and audio group signal is a full signal.
A determining module 1102, configured to determine a first leaf node 301 and a second leaf node 302 from a plurality of leaf nodes 30 according to the audio-visual group signal; the first leaf node 301 is an audio-video group signal inflow node, and the second leaf node 302 is an audio-video group signal outflow node.
A scheduling module 1103, configured to establish a first signal flow table on the first leaf node 301, so that the audio and video group signal is input to the first leaf node 301; establishing a second signal flow table on the first leaf node 301 and the spine node 20 to cause the audio-visual group signal to be forwarded from the first leaf node 301 to the spine node 20; establishing a third signal flow table on the spine node 20 and the second leaf node 302 to cause the audio-visual group signal to be forwarded from the spine node 20 to the second leaf node 302; a fourth signal flow table is established on the second leaf node 302 so that the audio-visual group signal is output from the second leaf node 302.
In one possible implementation, the video and audio signal scheduling system further includes a media controller 40, where the media controller 40 is communicatively connected to the matrix controller 10, and the determining module 1102 is specifically configured to:
The receiving media controller 40 sends a service generation request corresponding to the video and audio group signal; the service generation request comprises an input signal flow group, an input device identifier, an input port identifier, an output device identifier and an output port identifier; determining a first leaf node 301 from a plurality of leaf nodes 30 based on the input device identification; determining a second leaf node 302 from the plurality of leaf nodes 30 based on the output device identification;
The scheduling module 1103 is specifically configured to:
Generating a first signal flow table according to the input signal flow group, the input device identifier and the input port identifier; the first signal flow table is issued to a port of the first leaf node 301 corresponding to the input port identifier, so that the video and audio group signals are input through the port corresponding to the input port identifier; generating a fourth signal flow table according to the input signal flow group, the output equipment identifier and the output port identifier; the fourth signal flow table is issued to the port of the second leaf node 302 corresponding to the output port identification, so that the video and audio group signal is output from the port corresponding to the output port identification.
In one possible implementation, the scheduling module 1103 is specifically configured to:
In the case where there is an idle physical link between the first leaf node 301 and the spine node 20, a second signal flow table is established based on the idle physical link so that the video-audio group signal is forwarded from the first leaf node 301 to the spine node 20.
In one possible implementation, the determining module 1102 is specifically further configured to:
The set of input signal streams is issued to the spine node 20 and the plurality of leaf nodes 30.
In one possible implementation manner, the input signal flow group includes a first signal flow group and a second signal flow group, the output port identifier includes a first output port identifier and a second output port identifier, the first signal flow group and the first output port identifier have a corresponding relationship, and the second signal flow group and the second output port identifier have a corresponding relationship; the scheduling module 1103 is specifically configured to:
The fourth signal flow table is issued at the first port of the second leaf node 302 corresponding to the first output port identification and the second port corresponding to the second output port identification, so that the first signal flow group is output from the first port, and the second signal flow group is output from the second port.
In a possible implementation, the audio-visual signal scheduling system further includes a third leaf node 303, and the scheduling module 1103 is further configured to:
Establishing a fifth signal flow table on the spine node 20 and the second leaf node 302 to cause the audio-visual group signal to be forwarded from the spine node 20 to the third leaf node 303; a sixth signal flow table is established on the third leaf node 303 so that the audio-visual group signal is output from the third leaf node 303.
In a possible implementation manner, the input signal flow group includes a first signal flow group and a second signal flow group, the output device identifier includes a first output device identifier and a second output device identifier, the output port identifier includes a first output port identifier and a second output port identifier, a corresponding relationship exists among the first signal flow group, the first output device identifier and the first output port identifier, and a corresponding relationship exists among the second signal flow group, the second output device identifier and the second output port identifier;
the scheduling module 1103 is specifically further configured to:
Establishing a fourth signal flow table at a first output port identification of the second leaf node 302 determined according to the first output device identification, so that the first signal flow group is output from a port corresponding to the first output port identification; a sixth signal flow table is built at a second output port identification of the third leaf node 303 determined according to the second output device identification, so that the second signal flow group is output from a port corresponding to the second output port identification.
It should be noted that, the implementation principle of the aforementioned audio-video signal scheduling apparatus 110 may refer to the implementation principle of the aforementioned audio-video signal scheduling method, which is not described herein again. It should be understood that the division of the modules of the above apparatus is merely a division of a logic function, and may be fully or partially integrated into a physical entity or may be physically separated when actually implemented. And these modules may all be implemented in software in the form of calls by the processing element; or can be realized in hardware; the method can also be realized in a form of calling software by a processing element, and the method can be realized in a form of hardware by a part of modules. For example, the acquisition module 1101 may be a processing element that is set up separately, may be implemented as integrated in a chip of the above-described apparatus, or may be stored in a memory of the above-described apparatus in the form of program codes, and the functions of the above-described acquisition module 1101 may be called and executed by a processing element of the above-described apparatus. The implementation of the other modules is similar. In addition, all or part of the modules can be integrated together or can be independently implemented. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in a software form.
For example, the modules above may be one or more integrated circuits configured to implement the methods above, such as: one or more Application SPECIFIC INTEGRATED Circuits (ASIC), or one or more microprocessors (DIGITAL SIGNAL processors, DSP), or one or more field programmable gate arrays (field programmable GATE ARRAY, FPGA), etc. For another example, when a module above is implemented in the form of processing element scheduler code, the processing element may be a general purpose processor, such as a central processing unit (central processing unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
An embodiment of the present invention provides a computer device 100, where the computer device 100 includes a processor and a nonvolatile memory storing computer instructions, and when the computer instructions are executed by the processor, the computer device 100 executes the aforementioned video/audio signal scheduling apparatus 110. As shown in fig. 6, fig. 6 is a block diagram of a computer device 100 according to an embodiment of the present invention. The computer device 100 comprises an audio-visual signal scheduling means 110, a memory 111, a processor 112 and a communication unit 113.
The embodiment of the application provides a readable storage medium, which comprises a computer program, wherein the computer program controls computer equipment where the readable storage medium is located to execute the video and audio signal scheduling method in at least one possible implementation mode when running.
It will be appreciated by those skilled in the art that 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-usable 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The video and audio signal scheduling method is characterized by being applied to a matrix controller in a video and audio signal scheduling system, wherein the video and audio signal scheduling system further comprises a spine node and a plurality of leaf nodes, the matrix controller is in communication connection with the spine node and the plurality of leaf nodes, the spine node is in communication connection with the plurality of leaf nodes, the video and audio signal scheduling system further comprises a media controller, and the media controller is in communication connection with the matrix controller, and the method comprises the following steps:
Acquiring a plurality of video and audio signals to be processed, and acquiring video and audio group signals according to the overlapping relation among the video and audio signals to be processed, wherein the video and audio group signals are full signals; the number of the video and audio signals to be processed is the number required to be forwarded to the media equipment, and the video and audio signals to be processed comprise video streams, audio streams and auxiliary data;
And obtaining an audio-video group signal according to the overlapping relation among the plurality of audio-video signals to be processed, wherein the audio-video group signal comprises:
Analyzing the overlapping relation among the video stream, the audio stream and the auxiliary data of each video and audio signal to be processed according to the multicast address, and only reserving one piece of repeated data to obtain the video and audio group signal;
Determining a first leaf node and a second leaf node from the plurality of leaf nodes according to the video and audio group signals, wherein the first leaf node is the video and audio group signal inflow node, and the second leaf node is the video and audio group signal outflow node;
The determining a first leaf node and a second leaf node from the plurality of leaf nodes according to the audio-visual group signal includes:
Receiving a service generation request corresponding to the video and audio group signal sent by the media controller; the service generation request comprises an input signal flow group, an input device identifier, an input port identifier, an output device identifier and an output port identifier;
Determining the first leaf node from the plurality of leaf nodes according to the input device identification;
Determining the second leaf node from the plurality of leaf nodes according to the output device identification;
a first signal flow table is established on the first leaf node, so that the video and audio group signals are input into the first leaf node;
The establishing a first signal flow table on the first leaf node to enable the video and audio group signal to be input into the first leaf node comprises the following steps:
generating the first signal flow table according to the input signal flow group, the input equipment identifier and the input port identifier;
Issuing the first signal flow table to a port corresponding to the input port identifier of the first leaf node so that the video and audio group signals are input through the port corresponding to the input port identifier;
Establishing a second signal flow table on the first leaf node and the spine node to cause the video and audio group signals to be forwarded from the first leaf node to the spine node;
establishing a third signal flow table on the spine node and the second leaf node to cause the audio-visual group signal to be forwarded from the spine node to the second leaf node;
Establishing a fourth signal flow table on the second leaf node so that the video and audio group signals are output from the second leaf node;
the establishing a fourth signal flow table on the second leaf node to enable the video and audio group signals to be output from the second leaf node comprises:
generating the fourth signal flow table according to the input signal flow group, the output equipment identifier and the output port identifier;
Issuing the fourth signal flow table to a port corresponding to the output port identifier of the second leaf node, so that the video and audio group signals are output from the port corresponding to the output port identifier;
The video-audio signal scheduling system further comprises a third leaf node, and the method further comprises:
establishing a fifth signal flow table on the spine node and the second leaf node to cause the audio-visual group signal to be forwarded from the spine node to the third leaf node;
establishing a sixth signal flow table on the third leaf node so that the video and audio group signals are output from the third leaf node;
The input signal flow group comprises a first signal flow group and a second signal flow group, the output equipment identifiers comprise a first output equipment identifier and a second output equipment identifier, the output port identifiers comprise a first output port identifier and a second output port identifier, the first signal flow group, the first output equipment identifier and the first output port identifier have corresponding relations, and the second signal flow group, the second output equipment identifier and the second output port identifier have corresponding relations;
the establishing a fourth signal flow table on the second leaf node to enable the video and audio group signals to be output from the second leaf node comprises:
establishing the fourth signal flow table at the first output port identifier of the second leaf node determined according to the first output device identifier, so that the first signal flow group is output from a port corresponding to the first output port identifier;
The establishing a sixth signal flow table on the third leaf node to enable the audio-visual group signal to be output from the third leaf node comprises:
And establishing the sixth signal flow table at the second output port identifier of the third leaf node determined according to the second output device identifier, so that the second signal flow group is output from a port corresponding to the second output port identifier.
2. The method of claim 1, wherein the establishing a second signal flow table on the first leaf node and the spine node to cause the audio-visual group signal to be forwarded from the first leaf node to the spine node comprises:
in the case that an idle physical link exists between the first leaf node and the spine node, the second signal flow table is established based on the idle physical link so that the video and audio group signal is forwarded from the first leaf node to the spine node.
3. The method of claim 1, wherein said determining a first leaf node and a second leaf node from said plurality of leaf nodes based on said audio-visual group signal further comprises:
The set of input signal streams is issued to the spine node and the plurality of leaf nodes.
4. The method of claim 1, wherein said creating a fourth signal flow table at said second leaf node to cause said audio-visual group signal to be output from said second leaf node comprises:
And issuing the fourth signal flow table at a first port corresponding to the second leaf node and the first output port identifier and a second port corresponding to the second leaf node and the second output port identifier, so that the first signal flow group is output from the first port, and the second signal flow group is output from the second port.
5. An audio-visual signal scheduling device, characterized in that, be applied to the matrix controller in audio-visual signal scheduling system, audio-visual signal scheduling system still includes spine node and a plurality of leaf node, matrix controller with spine node and a plurality of leaf node all communication connection, spine node with communication connection between a plurality of leaf nodes, audio-visual signal scheduling system still includes the media controller, the media controller with matrix controller communication connection, the device includes:
The acquisition module is used for acquiring a plurality of video and audio signals to be processed, and acquiring video and audio group signals according to the overlapping relation among the video and audio signals to be processed; the video and audio group signal is a full signal;
a determining module, configured to determine a first leaf node and a second leaf node from the plurality of leaf nodes according to the video and audio group signal; the first leaf node is the video and audio group signal inflow node, and the second leaf node is the video and audio group signal outflow node;
The determining module is specifically configured to:
Receiving a service generation request corresponding to the video and audio group signal sent by the media controller; the service generation request comprises an input signal flow group, an input device identifier, an input port identifier, an output device identifier and an output port identifier; determining the first leaf node from the plurality of leaf nodes according to the input device identification; determining the second leaf node from the plurality of leaf nodes according to the output device identification;
the scheduling module is used for establishing a first signal flow table on the first leaf node so that the video and audio group signals are input into the first leaf node; establishing a second signal flow table on the first leaf node and the spine node to cause the video and audio group signals to be forwarded from the first leaf node to the spine node; establishing a third signal flow table on the spine node and the second leaf node to cause the audio-visual group signal to be forwarded from the spine node to the second leaf node; establishing a fourth signal flow table on the second leaf node so that the video and audio group signals are output from the second leaf node;
The number of the video and audio signals to be processed is the number required to be forwarded to the media equipment, and the video and audio signals to be processed comprise video streams, audio streams and auxiliary data;
The acquisition module is used for: analyzing the overlapping relation among the video stream, the audio stream and the auxiliary data of each video and audio signal to be processed according to the multicast address, and only reserving one piece of repeated data to obtain the video and audio group signal;
the video and audio signal scheduling system further comprises a third leaf node, and the scheduling module is further used for:
Establishing a fifth signal flow table on the spine node and the second leaf node to cause the audio-visual group signal to be forwarded from the spine node to the third leaf node; establishing a sixth signal flow table on the third leaf node so that the video and audio group signals are output from the third leaf node;
The input signal flow group comprises a first signal flow group and a second signal flow group, the output equipment identifiers comprise a first output equipment identifier and a second output equipment identifier, the output port identifiers comprise a first output port identifier and a second output port identifier, the first signal flow group, the first output equipment identifier and the first output port identifier have corresponding relations, and the second signal flow group, the second output equipment identifier and the second output port identifier have corresponding relations;
The scheduling module is specifically configured to:
establishing the fourth signal flow table at the first output port identifier of the second leaf node determined according to the first output device identifier, so that the first signal flow group is output from a port corresponding to the first output port identifier;
The scheduling module is specifically configured to:
Generating the first signal flow table according to the input signal flow group, the input equipment identifier and the input port identifier; issuing the first signal flow table to a port corresponding to the input port identifier of the first leaf node so that the video and audio group signals are input through the port corresponding to the input port identifier; generating the fourth signal flow table according to the input signal flow group, the output equipment identifier and the output port identifier; issuing the fourth signal flow table to a port corresponding to the output port identifier of the second leaf node, so that the video and audio group signals are output from the port corresponding to the output port identifier;
the scheduling module is specifically further configured to:
And establishing the sixth signal flow table at the second output port identifier of the third leaf node determined according to the second output device identifier, so that the second signal flow group is output from a port corresponding to the second output port identifier.
6. A computer device comprising a processor and a non-volatile memory storing computer instructions which, when executed by the processor, perform the method of scheduling audiovisual signals as claimed in any one of claims 1 to 4.
7. A readable storage medium, characterized in that the readable storage medium comprises a computer program, which when run controls a computer device in which the readable storage medium is located to perform the method for scheduling an audio-visual signal according to any one of claims 1-4.
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| CN109194993A (en) * | 2018-10-29 | 2019-01-11 | 中国建设银行股份有限公司 | Media file distribution method and file distributing platform |
| CN112511325A (en) * | 2019-09-16 | 2021-03-16 | 华为技术有限公司 | Network congestion control method, node, system and storage medium |
| WO2021259193A1 (en) * | 2020-06-22 | 2021-12-30 | 中兴通讯股份有限公司 | Multimedia file distribution method, multimedia control method, multimedia management platform, customized ring back tone platform, and computer readable storage medium |
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