CN109246486A - A kind of framing method and device - Google Patents
A kind of framing method and device Download PDFInfo
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- CN109246486A CN109246486A CN201811204718.7A CN201811204718A CN109246486A CN 109246486 A CN109246486 A CN 109246486A CN 201811204718 A CN201811204718 A CN 201811204718A CN 109246486 A CN109246486 A CN 109246486A
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- frame
- video
- data packet
- networked terminals
- video frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
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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
- H04N21/647—Control signaling between network components and server or clients; Network processes for video distribution between server and clients, e.g. controlling the quality of the video stream, by dropping packets, protecting content from unauthorised alteration within the network, monitoring of network load, bridging between two different networks, e.g. between IP and wireless
- H04N21/64784—Data processing by the network
- H04N21/64792—Controlling the complexity of the content stream, e.g. by dropping packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
Abstract
The embodiment of the invention provides a kind of framing method and devices, are applied in view networking.Wherein method includes: that view networked terminals receive the view networked server, and based on the video data packet issued depending on networking protocol, the video data packet includes packet serial number and frame number；Depending on networked terminals according to the packet serial number and the frame number, framing is carried out using the video data packet；Depending on networked terminals if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether abandon the video frame；Depending on networked terminals if it is determined that abandoning, then the video data packet for belonging to the video frame is deleted.Processing mode is more accurate in the embodiment of the present invention, avoids and also carries out discard processing for the video frame there is no real packet loss, reduces the quantity of the video frame of discarding, occurs Huaping phenomenon when not will lead to playing video data, promotes user experience.
Description
Technical field
The present invention relates to view networking technology fields, more particularly to a kind of framing method and a kind of framing device.
Background technique
With the fast development of the network technology, life of the two-way communications such as video conference, video teaching, videophone in user
Living, work, study etc. are widely available.In communication process, video counts can be mutually transmitted between the terminal of communicating pair
According to.It, may due to various reasons, such as the reason of terminal device itself, network company but in the transmission process of video data
The reason of connecing etc. will lead to and packet loss phenomenon occur.
In the prior art, for packet loss phenomenon, usually if it find that some video frame packet loss, then will belong to this video
All data packets of frame all abandon, and do not carry out framing to this video frame.But this processing mode inaccuracy, possible video
Frame carries out discard processing there is no real packet loss and by it according to packet loss, and if largely abandoning video frame, will lead to and broadcast
Occur phenomena such as flower screen when putting video data, reduces user experience.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present invention and overcomes the above problem or at least partly in order to provide one kind
A kind of framing method and a kind of corresponding framing device to solve the above problems.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of framing method, the method is applied to view networking
In, the view networking includes view networked terminals and view networked server, which comprises
The view networked terminals receive the view networked server, based on the video data packet issued depending on networking protocol；Institute
Stating video data packet includes packet serial number and frame number；
The view networked terminals carry out framing according to the packet serial number and the frame number, using the video data packet；
It is described depending on networked terminals if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether abandon the view
Frequency frame；
The view networked terminals are if it is determined that abandon, then deletion belongs to the video data packet of the video frame.
Preferably, described to determine whether the step of abandoning the video frame, comprising: described to judge continuing depending on networked terminals
Before received video data packet reaches setting quantity, whether framing is successful for the video frame；It is described to judge depending on networked terminals
When being as a result failed, determines and abandon the video frame.
Preferably, judge described depending on networked terminals before the video data packet continued to reaches setting quantity, institute
Video frame is stated whether before the successful step of framing, further includes: the networked terminals that regard judge the video frame whether as I frame；
The networked terminals that regard determine when judging result is is not I frame and abandon the video frame；The view networked terminals are tied in judgement
When fruit is is I frame, execution is described to be judged before the video data packet continued to reaches setting quantity depending on networked terminals, described
Video frame whether the successful step of framing.
Preferably, in the view networked terminals if it is determined that abandoning, then deletion belongs to all videos data of the video frame
After the step of packet, further includes: it is described depending on networked terminals if it is determined that the video frame is I frame, then delete and belong to the video frame
The video data packet of P frame between next I frame.
Preferably, the view networked terminals receive the view networked server, based on the video counts issued depending on networking protocol
The step of according to packet, comprising: the view networked terminals receive the view networked server and are based on view networking protocol, according to the view
The video data packet that the downstream communications link of networked terminals configuration issues.
On the other hand, the embodiment of the invention also discloses a kind of framing device, described device is applied in view networking, described
It include regarding networked terminals and view networked server depending on networking, it is described to include: depending on networked terminals
Receiving module, for receiving the view networked server, based on the video data packet issued depending on networking protocol；It is described
Video data packet includes packet serial number and frame number；
Framing module, for carrying out framing using the video data packet according to the packet serial number and the frame number；
Determining module, for if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether abandon the view
Frequency frame；
First removing module abandons if determining for the determining module, deletes the video counts for belonging to the video frame
According to packet.
Preferably, the determining module includes: the first judging unit, is reached for judging in the video data packet continued to
To before setting quantity, whether framing is successful for the video frame；First determination unit, for judging in first judging unit
When being as a result failed, determines and abandon the video frame.
Preferably, judge described depending on networked terminals before the video data packet continued to reaches setting quantity, institute
Video frame is stated whether before the successful step of framing, the determining module further include: second judgment unit, for judging the view
Whether frequency frame is I frame；Second determination unit, for determining and abandoning when the second judgment unit judging result is is not I frame
The video frame；First judging unit, specifically for judging when the second judgment unit judging result is is I frame
Before the video data packet continued to reaches setting quantity, whether framing is successful for the video frame.
Preferably, the view networked terminals further include: the second removing module, for if it is determined that the video frame is I frame, then
Delete the video data packet of the P frame belonged between the video frame and next I frame.
Preferably, the receiving module is specifically used for receiving the view networked server based on view networking protocol, according to right
The video data packet that the downstream communications link depending on networked terminals configuration issues.
In the embodiment of the present invention, view networked server is received depending on networked terminals, based on the video counts issued depending on networking protocol
According to packet；Depending on networked terminals according to packet serial number and frame number, framing is carried out using video data packet；It is depending on networked terminals if it is determined that current
Carrying out the video frame packet loss of framing, it is determined whether abandon video frame；Depending on networked terminals if it is determined that abandoning, then deletes and belong to
The video data packet of video frame.It follows that in the embodiment of the present invention when there is video frame packet loss, and indirect discarding view
Frequency frame, but further determine whether to really need and abandon the video frame.Therefore this kind of processing mode is more accurate, avoids pair
Discard processing is also carried out in the video frame there is no real packet loss, the quantity of the video frame of discarding is reduced, not will lead to broadcasting
Occur Huaping phenomenon when video data, promotes user experience.
Detailed description of the invention
Fig. 1 is a kind of networking schematic diagram of view networking of the invention；
Fig. 2 is a kind of hardware structural diagram of node server of the invention；
Fig. 3 is a kind of hardware structural diagram of access switch of the invention；
Fig. 4 is the hardware structural diagram that a kind of Ethernet association of the invention turns gateway；
Fig. 5 is a kind of step flow chart of framing method of the embodiment of the present invention one；
Fig. 6 is a kind of structural block diagram of framing device of the embodiment of the present invention two.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
It is the important milestone of network Development depending on networking, is a real-time network, can be realized HD video real-time Transmission,
Push numerous Internet applications to HD video, high definition is face-to-face.
Real-time high-definition video switching technology is used depending on networking, it can be such as high in a network platform by required service
Clear video conference, Intellectualized monitoring analysis, emergency command, digital broadcast television, delay TV, the Web-based instruction, shows video monitoring
Field live streaming, VOD program request, TV Mail, individual character records (PVR), Intranet (manages) channel by oneself, intelligent video Broadcast Control, information publication
All be incorporated into a system platform etc. services such as tens of kinds of videos, voice, picture, text, communication, data, by TV or
Computer realizes that high-definition quality video plays.
Embodiment in order to enable those skilled in the art to better understand the present invention is introduced to depending on networking below:
Depending on networking, applied portion of techniques is as described below:
Network technology (Network Technology)
Traditional ethernet (Ethernet) is improved depending on the network technology innovation networked, with potential huge on network
Video flow.(Circuit is exchanged different from simple network packet packet switch (Packet Switching) or lattice network
Switching), Streaming demand is met using Packet Switching depending on networking technology.Has grouping depending on networking technology
Flexible, the simple and low price of exchange, is provided simultaneously with the quality and safety assurance of circuit switching, it is virtually electric to realize the whole network switch type
The seamless connection of road and data format.
Switching technology (Switching Technology)
Two advantages of asynchronous and packet switch that Ethernet is used depending on networking eliminate Ethernet under the premise of complete compatible and lack
It falls into, has the end-to-end seamless connection of the whole network, direct user terminal, directly carrying IP data packet.User data is in network-wide basis
It is not required to any format conversion.It is the more advanced form of Ethernet depending on networking, is a real-time exchange platform, can be realized at present mutually
The whole network large-scale high-definition realtime video transmission that networking cannot achieve pushes numerous network video applications to high Qinghua, unitizes.
Server technology (Server Technology)
It is different from traditional server, its Streaming Media depending on the server technology in networking and unified video platform
Transmission be built upon it is connection-oriented on the basis of, data-handling capacity is unrelated with flow, communication time, single network layer energy
Enough transmitted comprising signaling and data.For voice and video business, handled depending on networking and unified video platform Streaming Media
Complexity many simpler than data processing, efficiency substantially increase hundred times or more than traditional server.
Reservoir technology (Storage Technology)
The ultrahigh speed reservoir technology of unified video platform in order to adapt to the media content of vast capacity and super-flow and
Using state-of-the-art real time operating system, the programme information in server instruction is mapped to specific hard drive space, media
Content is no longer pass through server, and moment is directly delivered to user terminal, and user waits typical time less than 0.2 second.It optimizes
Sector distribution greatly reduces the mechanical movement of hard disc magnetic head tracking, and resource consumption only accounts for the 20% of the internet ad eundem IP, but
The concurrent flow greater than 3 times of traditional disk array is generated, overall efficiency promotes 10 times or more.
Network security technology (Network Security Technology)
Depending on the structural design networked by servicing independent licence system, equipment and the modes such as user data is completely isolated every time
The network security problem that puzzlement internet has thoroughly been eradicated from structure, does not need antivirus applet, firewall generally, has prevented black
The attack of visitor and virus, structural carefree secure network is provided for user.
It services innovative technology (Service Innovation Technology)
Business and transmission are fused together by unified video platform, whether single user, private user or a net
The sum total of network is all only primary automatic connection.User terminal, set-top box or PC are attached directly to unified video platform, obtain rich
The multimedia video service of rich colorful various forms.Unified video platform is traditional to substitute with table schema using " menu type "
Complicated applications programming, considerably less code, which can be used, can be realized complicated application, realize the new business innovation of " endless ".
Networking depending on networking is as described below:
It is a kind of central controlled network structure depending on networking, which can be Tree Network, Star network, ring network etc. class
Type, but centralized control node is needed to control whole network in network on this basis.
As shown in Figure 1, being divided into access net and Metropolitan Area Network (MAN) two parts depending on networking.
The equipment of access mesh portions can be mainly divided into 3 classes: node server, access switch, terminal (including various machines
Top box, encoding board, memory etc.).Node server is connected with access switch, and access switch can be with multiple terminal phases
Even, and it can connect Ethernet.
Wherein, node server is the node that centralized control functions are played in access net, can control access switch and terminal.
Node server can directly be connected with access switch, can also directly be connected with terminal.
Similar, the equipment of metropolitan area mesh portions can also be divided into 3 classes: metropolitan area server, node switch, node serve
Device.Metropolitan area server is connected with node switch, and node switch can be connected with multiple node servers.
Wherein, node server is the node server for accessing mesh portions, i.e. node server had both belonged to access wet end
Point, and belong to metropolitan area mesh portions.
Metropolitan area server is the node that centralized control functions are played in Metropolitan Area Network (MAN), can control node switch and node serve
Device.Metropolitan area server can be directly connected to node switch, can also be directly connected to node server.
It can be seen that be entirely a kind of central controlled network structure of layering depending on networking network, and node server and metropolitan area
The network controlled under server can be the various structures such as tree-shaped, star-like, cyclic annular.
Visually claim, access mesh portions can form unified video platform (part in virtual coil), and multiple unified videos are flat
Platform can form view networking；Each unified video platform can be interconnected by metropolitan area and wide area depending on networking.
1, view networked devices classification
1.1 embodiment of the present invention can be mainly divided into 3 classes: server depending on the equipment in networking, interchanger (including ether
Net gateway), terminal (including various set-top boxes, encoding board, memory etc.).Depending on networking can be divided on the whole Metropolitan Area Network (MAN) (or
National net, World Wide Web etc.) and access net.
1.2 equipment for wherein accessing mesh portions can be mainly divided into 3 classes: node server, access switch (including ether
Net gateway), terminal (including various set-top boxes, encoding board, memory etc.).
The specific hardware structure of each access network equipment are as follows:
Node server:
As shown in Fig. 2, mainly including Network Interface Module 201, switching engine module 202, CPU module 203, disk array
Module 204；
Wherein, Network Interface Module 201, the Bao Jun that CPU module 203, disk array module 204 are come in enter switching engine
Module 202；Switching engine module 202 look into the operation of address table 205 to the packet come in, to obtain the navigation information of packet；
And the packet is stored according to the navigation information of packet the queue of corresponding pack buffer 206；If the queue of pack buffer 206 is close
It is full, then it abandons；All pack buffer queues of 202 poll of switching engine mould, are forwarded: 1) port if meeting the following conditions
It is less than to send caching；2) the queue package counting facility is greater than zero.Disk array module 204 mainly realizes the control to hard disk, including
The operation such as initialization, read-write to hard disk；CPU module 203 is mainly responsible between access switch, terminal (not shown)
Protocol processes, to address table 205 (including descending protocol packet address table, uplink protocol package address table, data packet addressed table)
Configuration, and, the configuration to disk array module 204.
Access switch:
As shown in figure 3, mainly including Network Interface Module (downstream network interface module 301, uplink network interface module
302), switching engine module 303 and CPU module 304；
Wherein, the packet (upstream data) that downstream network interface module 301 is come in enters packet detection module 305；Packet detection mould
Whether mesh way address (DA), source address (SA), type of data packet and the packet length of the detection packet of block 305 meet the requirements, if met,
It then distributes corresponding flow identifier (stream-id), and enters switching engine module 303, otherwise abandon；Uplink network interface mould
The packet (downlink data) that block 302 is come in enters switching engine module 303；The data packet that CPU module 204 is come in enters switching engine
Module 303；Switching engine module 303 look into the operation of address table 306 to the packet come in, to obtain the navigation information of packet；
If the packet into switching engine module 303 is that downstream network interface is gone toward uplink network interface, in conjunction with flow identifier
(stream-id) packet is stored in the queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
It abandons；If the packet into switching engine module 303 is not that downstream network interface is gone toward uplink network interface, according to packet
Navigation information is stored in the data packet queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
Then abandon.
All pack buffer queues of 303 poll of switching engine module, are divided to two kinds of situations in embodiments of the present invention:
If the queue is that downstream network interface is gone toward uplink network interface, meets the following conditions and be forwarded: 1)
It is less than that the port sends caching；2) the queue package counting facility is greater than zero；3) token that rate control module generates is obtained；
If the queue is not that downstream network interface is gone toward uplink network interface, meets the following conditions and is forwarded:
1) it is less than to send caching for the port；2) the queue package counting facility is greater than zero.
Rate control module 208 is configured by CPU module 204, to all downlink networks in programmable interval
Interface generates token toward the pack buffer queue that uplink network interface is gone, to control the code rate of forwarded upstream.
CPU module 304 is mainly responsible for the protocol processes between node server, the configuration to address table 306, and,
Configuration to rate control module 308.
Ethernet association turns gateway:
As shown in figure 4, mainly including Network Interface Module (downstream network interface module 401, uplink network interface module
402), switching engine module 403, CPU module 404, packet detection module 405, rate control module 408, address table 406, Bao Huan
Storage 407 and MAC adding module 409, MAC removing module 410.
Wherein, the data packet that downstream network interface module 401 is come in enters packet detection module 405；Packet detection module 405 is examined
Ethernet mac DA, ethernet mac SA, Ethernet length or frame type, the view networking destination address of measured data packet
DA, whether meet the requirements depending on networking source address SA, depending on networking data Packet type and packet length, corresponding stream is distributed if meeting
Identifier (stream-id)；Then, MAC DA, MAC SA, length or frame type are subtracted by MAC removing module 410
(2byte), and enter corresponding receive and cache, otherwise abandon；
Downstream network interface module 401 detects the transmission caching of the port, if there is Bao Ze is according to the view of packet networking purpose
Address D A knows the ethernet mac DA of corresponding terminal, adds the ethernet mac DA of terminal, Ethernet assists the MAC for turning gateway
SA, Ethernet length or frametype, and send.
The function that Ethernet association turns other modules in gateway is similar with access switch.
Terminal:
It mainly include Network Interface Module, Service Processing Module and CPU module；For example, set-top box mainly connects including network
Mouth mold block, video/audio encoding and decoding engine modules, CPU module；Encoding board mainly includes Network Interface Module, video encoding engine
Module, CPU module；Memory mainly includes Network Interface Module, CPU module and disk array module.
The equipment of 1.3 metropolitan area mesh portions can be mainly divided into 2 classes: node server, node switch, metropolitan area server.
Wherein, node switch mainly includes Network Interface Module, switching engine module and CPU module；Metropolitan area server mainly includes
Network Interface Module, switching engine module and CPU module are constituted.
2, networking data package definition is regarded
2.1 access network data package definitions
Access net data packet mainly include following sections: destination address (DA), source address (SA), reserve bytes,
payload(PDU)、CRC。
As shown in the table, the data packet for accessing net mainly includes following sections:
| DA | SA | Reserved | Payload | CRC |
Wherein:
Destination address (DA) is made of 8 bytes (byte), and first character section indicates type (such as the various associations of data packet
Discuss packet, multicast packet, unicast packet etc.), be up to 256 kinds of possibility, the second byte to the 6th byte is metropolitan area net address,
Seven, the 8th bytes are access net address；
Source address (SA) is also to be made of 8 bytes (byte), is defined identical as destination address (DA)；
Reserve bytes are made of 2 bytes；
The part payload has different length according to the type of different data packets, is if it is various protocol packages
64 bytes are 32+1024=1056 bytes if it is single group unicast packets words, are not restricted to above 2 kinds certainly；
CRC is made of 4 bytes, and calculation method follows the Ethernet CRC algorithm of standard.
2.2 Metropolitan Area Network (MAN) packet definitions
The topology of Metropolitan Area Network (MAN) is pattern, may there is 2 kinds, connection even of more than two kinds, i.e. node switching between two equipment
It can all can exceed that 2 kinds between machine and node server, node switch and node switch, node switch and node server
Connection.But the metropolitan area net address of metropolitan area network equipment is uniquely, to close to accurately describe the connection between metropolitan area network equipment
System, introduces parameter in embodiments of the present invention: label, uniquely to describe a metropolitan area network equipment.
(Multi-Protocol Label Switch, multiprotocol label are handed over by the definition of label and MPLS in this specification
Change) label definition it is similar, it is assumed that between equipment A and equipment B there are two connection, then data packet from equipment A to equipment B just
There are 2 labels, data packet also there are 2 labels from equipment B to equipment A.Label is divided into label, outgoing label, it is assumed that data packet enters
The label (entering label) of equipment A is 0x0000, and the label (outgoing label) when this data packet leaves equipment A may reform into
0x0001.The networking process of Metropolitan Area Network (MAN) is to enter network process under centralized control, also means that address distribution, the label of Metropolitan Area Network (MAN)
Distribution be all to be dominated by metropolitan area server, node switch, node server be all passively execute, this point with
The label distribution of MPLS is different, and the distribution of the label of MPLS is the result that interchanger, server are negotiated mutually.
As shown in the table, the data packet of Metropolitan Area Network (MAN) mainly includes following sections:
| DA | SA | Reserved | Label | Payload | CRC |
That is destination address (DA), source address (SA), reserve bytes (Reserved), label, payload (PDU), CRC.Its
In, the format of label, which can refer to, such as gives a definition: label is 32bit, wherein high 16bit retains, only with low 16bit, its position
Set is between the reserve bytes and payload of data packet.
Embodiment one
The framing method of the embodiment of the present invention can be applied in view networking.It may include view networked terminals in depending on networking
With depending on networked server (being specifically as follows above-mentioned node server), one can access multiple view networkings depending on networked server
Terminal.The framing method of the embodiment of the present invention specifically can be applied in view networked terminals.It is the upper industry of view networking depending on networked terminals
Business landing equipment, depending on the actual participation person or server of networking service, regarding networked terminals can be various set-top boxes, Streaming Media net
Close, store gateway, media synthesizer, encoding board, etc..It is registered to depending on networked terminals needs depending on that can be carried out on networked server
Regular traffic.
Referring to Fig. 5, a kind of step flow chart of framing method of the embodiment of the present invention one is shown.
The framing method of the embodiment of the present invention may comprise steps of:
Step 501, the view networked server is received depending on networked terminals, based on the video data issued depending on networking protocol
Packet.
The framing method of the embodiment of the present invention can be applied in the communication process based on view networking, such as video conference, view
Frequency teaching, videophone, publication live streaming, watch be broadcast live, etc..
For example, by taking video conference as an example, in the communication process of video conference, sender's (such as can depending on networked terminals
View speaking party) video data of acquisition can be encapsulated as by video data packet based on view networking protocol, and will be regarded by view networking
Frequency data packet is sent to view networked server.It may include the information and reception of the view networked terminals of sender in video data packet
The information etc. of the view networked terminals of side, can be based on view networking protocol, by regarding networking for video data packet depending on networked server
Be issued to recipient depending on networked terminals (such as the meeting side of attending a meeting).
The embodiment of the present invention mainly describes the view networked terminals of recipient, is receiving the video issued depending on networked server
Framing process after data packet.Therefore, it is whole as the networking of the view of recipient that networked terminals are regarded involved in the embodiment of the present invention
End.
It in a preferred embodiment, can be based on view networking protocol, according to view networked terminals depending on networked server
The downstream communications link of (i.e. the view networked terminals of recipient) configuration, issues video data packet to depending on networked terminals, the video counts
It is specifically as follows the video data packet that view networked server is sent to depending on networked terminals of sender according to packet.
In practical applications, networking is regarded as the network with centralized control functions, including main control server and undernet
Equipment, which includes terminal, and one of the core idea depending on networking is, by notifying to exchange by main control server
Equipment is directed to when time downstream communications link of service matches table, and the table for being then based on the configuration carries out the transmission of data packet.
That is, including: depending on the communication means in networking
Main control server configuration is when time downstream communications link of service.
Work as time data packet of service for what source terminal (the view networked terminals of such as sender) were sent, according to the downlink communication
Link is sent to target terminal (the view networked terminals of such as recipient).
In embodiments of the present invention, it includes: notice when the downlink of secondary service is logical that time downstream communications link of service is worked as in configuration
Believe that switching equipment involved in link matches table.
It furthermore, include: the configured table of inquiry according to downstream communications link transmission, switching equipment is received to institute
Data packet is transmitted by corresponding port.
In the concrete realization, service includes unicast communication service and Multicast Communication Service.I.e. either cast communication is still
Unicast communication can realize the communication in view networking using the above-mentioned core idea with table-table.
As previously mentioned, view networking includes access mesh portions, in access net, which is node server, under
The grade network equipment includes access switch and terminal.
For the unicast communication service in access net, the main control server configuration is when time downlink communication chain of service
The step of road, may comprise steps of:
Sub-step S11, the service request protocol package that main control server is initiated according to source terminal are obtained when time downlink of service
Communication link information, downstream communications link information include participating in when time downlink of the main control server of service and access switch
Communication port information.
Sub-step S12, downstream communication ports information of the main control server according to main control server, data packet inside it
The downlink port that setting is oriented to when time data packet of service in address table；And believe according to the downstream communication ports of access switch
Breath, to corresponding access switch sending port configuration order.
Sub-step S13, access switch according in port configuration command data packet addressed table inside it, setting when time
The downlink port that the data packet of service is oriented to.
For the Multicast Communication Service (such as video conference) in access net, main control server is obtained when under time service
The step of row communication link information may include following sub-step:
Sub-step S21, main control server obtain the service request agreement for the application Multicast Communication Service that target terminal is initiated
It wraps, includes the access net address of service type information, service content information and target terminal in service request protocol package.
It wherein, include service number in service content information.
Sub-step S22, main control server according to the service number in preset content-address mapping table, extraction source
The access net address of terminal.
Sub-step S23, main control server obtains the corresponding multicast address of source terminal, and distributes to target terminal；And according to
According to the access net address of service type information, source terminal and target terminal, the communication link information when time multicast services is obtained.
Step 502, depending on networked terminals according to the packet serial number and the frame number, group is carried out using the video data packet
Frame.
The video data packet issued depending on networked server is received one by one depending on networked terminals, can wrap in each video data packet
Packet serial number and frame number are included, a video frame may include multiple video data packets, for example may include 10,20 video counts
According to packet, etc..Depending on networked terminals group can be carried out using video data packet according to the packet serial number and frame number of video data packet
Frame.It is right according to the sequence of the packet serial number for the video data packet for belonging to the video frame in the framing process for some video frame
Video data packet arrangement position.
For example, regard the frame number for the 1st video data packet that networked terminals receive as 1, packet serial number 1, then by the view
Frequency data packet is placed in the position of the 1st data packet in the video frame that frame number is 1；The 2nd video data packet received
Frame number be 1, packet serial number 3, then by the video data packet be placed in frame number be 1 video frame in packet serial number 1 view
Position after frequency data packet；The frame number of the 3rd video data packet received is 1, packet serial number 2, then by the video counts
It is placed in the video frame that frame number is 1 after the video data packet of packet serial number 1 according to packet, the video data packet of packet serial number 3
Position before；The frame number of the 4th video data packet received is 1, and packet serial number 5 then places the video data packet
Position in the video frame that frame number is 1 after the video data packet of packet serial number 3；The 5th video data packet received
Frame number be 1, packet serial number 6, then by the video data packet be placed in frame number be 1 video frame in packet serial number 5 view
Position after frequency data packet；The frame number of the 6th video data packet received is 1, packet serial number 7, then by the video counts
The position in the video frame that frame number is 1 after the video data packet of packet serial number 6 is placed according to packet.And so on, carry out frame
The framing process of the video frame of serial number 1.
Step 503, depending on networked terminals if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether abandon institute
State video frame.
Depending on networked terminals according to the packet serial number and the frame number, the mistake of framing is carried out using the video data packet
Cheng Zhong, can also judge currently carrying out framing video frame whether packet loss.
In a kind of specific implementation, for video frame whether the judgement of packet loss can be in the following way: view network
Terminal is currently carrying out the video frame of framing detecting, after there is the video data packet temporarily lost, judges after continued access
The video data packet of receipts reaches before setting amount threshold, if receives the video data packet temporarily lost；If not connecing also
It receives, it is determined that the video frame packet loss；If receiving, it is determined that the non-packet loss of the video frame, it may be possible to random ordering occur.Herein
Any suitable numerical value can be arranged in setting amount threshold according to the actual situation, for example can be set to 2,3,4, etc., this hair
Bright embodiment to this with no restriction.
Amount threshold is set as 2, according to the 2nd video data packet in above-mentioned example, received for example, can be set
Frame number be 1, packet serial number 3；The frame number of the 2nd video data packet received is 1, packet serial number 3；It can examine at this time
It measures the video frame that frame number is 1 and the video data packet temporarily lost, the i.e. video data packet of packet serial number 2 occurs, and continue
The frame number of the 3rd video data packet received is 1, packet serial number 2, therefore can learn that frame number is 1, packet serial number 2
Video data packet only there is random ordering, and not packet loss.The frame number of the 2nd video data packet received is 1, Bao Xu
Number be 3；The frame number of the 3rd video data packet received is 1, packet serial number 2；The 4th video data packet received
Frame number is 1, packet serial number 5；It can detecte the video frame that frame number is 1 at this time and the video data packet temporarily lost occur,
That is the video data packet of packet serial number 4, and the frame number of the 5th video data packet continued to is 1, packet serial number 6；It connects
The frame number of the 6th video data packet received is 1, packet serial number 7, and not receiving frame number also is 1, the view of packet serial number 4
Frequency data packet, therefore can learn that frame number is 1, the video data packet packet loss of packet serial number 4, and not random ordering.
Depending on networked terminals if it is determined that currently carrying out the video frame packet loss of framing, and indirect discarding video frame, and
It is that may further determine whether to really need to abandon the video frame.
In a preferred embodiment, it is determined whether the step of abandoning the video frame may include: view networked terminals
Judge before the video data packet continued to reaches setting quantity, whether framing is successful for video frame；Sentencing depending on networked terminals
When disconnected result is failed, determines and abandon the video frame；When judging result is successfully, determines and retain the video frame.This
Any suitable numerical value can be arranged in the setting quantity at place according to the actual situation, for example can be set to 40,50,60, etc., this
Inventive embodiments to this with no restriction.
Wherein, judge video frame whether framing successfully can be with are as follows: judge all videos data packet that video frame includes is whether
It places in order, forms a complete video frame.For example, if the video frame that frame number is 1 includes 20 video counts
According to packet, if that frame number is 1, packet serial number 1, until frame number is 1,20 video data packets of packet serial number 20 have been pressed
Sequence is placed, and a complete video frame is constituted, then the video frame framing success that frame number is 1.
It, can be after continued access depending on networked terminals after determining currently carrying out the video frame packet loss of framing under this kind of mode
Video data packet is received, if video frame can't be made complete when continuing to the video data packet of setting quantity, it is determined that
Really the video frame can be abandoned.
In another preferred embodiment, it is determined whether the step of abandoning the video frame may include: that view networking is whole
End judges whether the video frame is I frame；When judging result is is not I frame, determines and abandon the video frame；In judging result
When to be I frame, can further it judge before the video data packet continued to reaches setting quantity depending on networked terminals, video
Whether framing is successful for frame；When judging result is failed, determines and abandon the video frame；When judging result is successfully, really
Surely retain the video frame.
It wherein, further include frame type identification in video data packet, frame type identification can be I frame, P frame, B frame.Judgement view
Whether frequency frame is that I frame can be with are as follows: according to the frame type identification for the video data packet that the video frame includes, judges the video frame
It whether is I frame.
Under this kind of mode, first the type of video frame is judged depending on networked terminals, it, can if video frame is not I frame
May not be too big to think to abandon the influence generated after the video frame, thus may determine that abandoning the video frame；If video
Frame is I frame, it may be considered that abandoning the influence generated after the video frame may be larger, therefore can not abandon the video temporarily
Frame, but such as above-mentioned deterministic process is further executed, to further determine whether to abandon the video frame really.
Step 504, depending on networked terminals if it is determined that abandoning, then deletion belongs to the video data packet of the video frame.
If it is determined that abandoning the video frame, then all videos data for belonging to the video frame can be deleted depending on networked terminals
Packet.
Preferably, in the embodiment of the present invention, depending on networked terminals after deletion belongs to the video data packet of the video frame,
Subsequent treatment process can also be executed according further to the genuine type of the food.For example, view networked terminals judge the video
Whether frame is I frame；If it is determined that the video frame is not I frame, then do not deal with；If it is determined that the video frame is I frame, then category is deleted
The video data packet of P frame between the video frame and next I frame, namely delete the GOP where the video frame
(Group of Pictures, picture group), GOP indicate whole P frames between two I frames.
If the video frame abandoned is I frame, after video data packet can be continued to later depending on networked terminals,
If it is judged that video frame belonging to the video data packet is P frame, then these video data packets for belonging to P frame are deleted.
For what is do not abandoned, the successful complete video frame of framing, the video frame can be decoded depending on networked terminals,
The operation such as broadcasting, to realize the transmission of the video data between view networked terminals.
In the embodiment of the present invention when there is video frame packet loss, and indirect discarding video frame, but further determine that
Whether really need and abandons the video frame.Therefore this kind of processing mode is more accurate, avoids for there is no real packet losses
Video frame also carries out discard processing, reduces the quantity of the video frame of discarding, occurs flower screen when not will lead to playing video data
Phenomenon promotes user experience.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Embodiment two
Referring to Fig. 6, a kind of structural block diagram of framing device of the embodiment of the present invention two is shown.The group of the embodiment of the present invention
Frame device can be applied in view networking, and the view networking includes view networked terminals and view networked server.
The framing device of the embodiment of the present invention specifically can be applied in view networked terminals, may include that the following view that is located at joins
Module in network termination:
It is described to include: depending on networked terminals
Receiving module 601, for receiving the view networked server, based on the video data packet issued depending on networking protocol；
The video data packet includes packet serial number and frame number；
Framing module 602, for carrying out group using the video data packet according to the packet serial number and the frame number
Frame；
Determining module 603, for if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether described in discarding
Video frame；
First removing module 604 abandons if determining for the determining module, deletes the video for belonging to the video frame
Data packet.
In a preferred embodiment, the determining module includes: the first judging unit, is being continued to for judging
Video data packet reach setting quantity before, the video frame whether framing success；First determination unit, for described the
When one judging unit judging result is failed, determines and abandon the video frame.
In a preferred embodiment, it is described judge to reach in the video data packet continued to depending on networked terminals set
Before fixed number amount, whether the video frame is before the successful step of framing, the determining module further include: second judgment unit,
For judging whether the video frame is I frame；Second determination unit, for being not to be in the second judgment unit judging result
When I frame, determines and abandon the video frame；First judging unit is specifically used in the second judgment unit judging result
When to be I frame, judge before the video data packet continued to reaches setting quantity, whether framing is successful for the video frame.
In a preferred embodiment, the view networked terminals further include: the second removing module, for if it is determined that described
Video frame is I frame, then deletes the video data packet of the P frame belonged between the video frame and next I frame.
In a preferred embodiment, the receiving module is specifically used for receiving the view networked server based on view
Networking protocol, according to the video data packet issued to the downstream communications link depending on networked terminals configuration.
In the embodiment of the present invention when there is video frame packet loss, and indirect discarding video frame, but further determine that
Whether really need and abandons the video frame.Therefore this kind of processing mode is more accurate, avoids for there is no real packet losses
Video frame also carries out discard processing, reduces the quantity of the video frame of discarding, occurs flower screen when not will lead to playing video data
Phenomenon promotes user experience.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of framing method provided by the present invention and a kind of framing device, it is described in detail, herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand method and its core concept of the invention；At the same time, for those skilled in the art, according to the thought of the present invention,
There will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as to this
The limitation of invention.
Claims (10)
1. a kind of framing method, which is characterized in that the method is applied in view networking, and the view networking includes view networked terminals
With view networked server, which comprises
The view networked terminals receive the view networked server, based on the video data packet issued depending on networking protocol；The view
Frequency data packet includes packet serial number and frame number；
The view networked terminals carry out framing according to the packet serial number and the frame number, using the video data packet；
It is described depending on networked terminals if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether abandon the video
Frame；
The view networked terminals are if it is determined that abandon, then deletion belongs to the video data packet of the video frame.
2. the method according to claim 1, wherein described determine whether the step of abandoning the video frame, packet
It includes:
It is described depending on networked terminals judge the video data packet continued to reach setting quantity before, the video frame whether group
Frame success；
It is described regard networked terminals judging result as it is failed when, determine and abandon the video frame.
3. according to the method described in claim 2, it is characterized in that, judging depending on networked terminals in the video continued to described
Before data packet reaches setting quantity, whether the video frame is before the successful step of framing, further includes:
Whether the networked terminals that regard judge the video frame as I frame；
The networked terminals that regard determine when judging result is is not I frame and abandon the video frame；
When judging result is is I frame, execution is described to be judged depending on networked terminals in the video continued to the networked terminals that regard
Data packet reach setting quantity before, the video frame whether the successful step of framing.
4. the method according to claim 1, wherein in the view networked terminals if it is determined that discarding, then delete category
After in all videos data packet of the video frame the step of, further includes:
It is described depending on networked terminals if it is determined that the video frame is I frame, then delete and belong between the video frame and next I frame
The video data packet of P frame.
5. the method according to claim 1, wherein the view networked terminals receive the view networked server,
The step of based on the video data packet issued depending on networking protocol, comprising:
The view networked terminals receive the view networked server and are based on view networking protocol, configure according to the view networked terminals
The video data packet that issues of downstream communications link.
6. a kind of framing device, which is characterized in that described device is applied in view networking, and the view networking includes view networked terminals
It is described to include: depending on networked terminals with view networked server
Receiving module, for receiving the view networked server, based on the video data packet issued depending on networking protocol；The video
Data packet includes packet serial number and frame number；
Framing module, for carrying out framing using the video data packet according to the packet serial number and the frame number；
Determining module, for if it is determined that currently carrying out the video frame packet loss of framing, it is determined whether abandon the video frame；
First removing module abandons if determining for the determining module, deletes the video data packet for belonging to the video frame.
7. device according to claim 6, which is characterized in that the determining module includes:
First judging unit, for judging before the video data packet continued to reaches setting quantity, the video frame is
No framing success；
First determination unit, for determining and abandoning the video frame when the first judging unit judging result is failed.
8. device according to claim 7, which is characterized in that judge depending on networked terminals in the video continued to described
Before data packet reaches setting quantity, whether the video frame is before the successful step of framing, the determining module further include:
Second judgment unit, for judging whether the video frame is I frame；
Second determination unit, for determining and abandoning the video when the second judgment unit judging result is is not I frame
Frame；
First judging unit, specifically for judging after continued access when the second judgment unit judging result is is I frame
Before the video data packet of receipts reaches setting quantity, whether framing is successful for the video frame.
9. device according to claim 6, which is characterized in that the view networked terminals further include:
Second removing module, for if it is determined that the video frame is I frame, then delete belong to the video frame and next I frame it
Between P frame video data packet.
10. device according to claim 6, which is characterized in that
The receiving module is specifically used for receiving the view networked server based on view networking protocol, networks according to the view
The video data packet that the downstream communications link of terminal configuration issues.
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