CN110267099A - A kind of data transmission method and view networked terminals based on view networking - Google Patents
A kind of data transmission method and view networked terminals based on view networking Download PDFInfo
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- CN110267099A CN110267099A CN201910430938.XA CN201910430938A CN110267099A CN 110267099 A CN110267099 A CN 110267099A CN 201910430938 A CN201910430938 A CN 201910430938A CN 110267099 A CN110267099 A CN 110267099A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
Abstract
The embodiment of the present application provides a kind of based on the data transmission method for regarding networking and view networked terminals.The described method includes: receiving the audio, video data based on view networking protocol that the first view networked terminals are sent via view networked server by the second view networked terminals；Wherein, the audio, video data based on depending on networking protocol be described first depending on networked terminals with fix frame per second transmission；The audio, video data based on depending on networking protocol is converted to the audio, video data of internet protocol-based；The audio, video data of the internet protocol-based is resolved into corresponding audio frame sequence and sequence of frames of video, and is cached to buffer queue；The audio frame sequence and sequence of frames of video are sent to media server with the fixed frame per second respectively from the buffer queue.Uniform transmission of the audio, video data frame between different agreement layers is realized, has ensured the smooth playing of audio-video.
Description
Technical field
This application involves view networking technology fields, join more particularly to a kind of data transmission method based on view networking and view
Network termination.
Background technique
Life, work with the fast development of view networking, based on video conference, video teaching for regarding networking etc. in user
Make, learn etc. is widely available.
When carrying out media data transmission between view networking and internet, Chang Yinwei video frame is excessive to cause transmission delay,
Cause to play Caton, affects user experience.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present application and overcomes the above problem or at least partly in order to provide one kind
The data transmission method and view networked terminals based on view networking to solve the above problems.
In a first aspect, the embodiment of the present application discloses a kind of data transmission method based on view networking, which comprises
Second view networked terminals receive the first view networked terminals via view networked server transmission based on view networking protocol
Audio, video data；Wherein, the audio, video data based on depending on networking protocol is the first view networked terminals with anchor-frame
What rate was sent；
The audio, video data based on depending on networking protocol is converted to the audio, video data of internet protocol-based；
The audio, video data of the internet protocol-based is resolved into corresponding audio frame sequence and sequence of frames of video, and
It caches to buffer queue；
The audio frame sequence and sequence of frames of video are sent to the fixed frame per second respectively from the buffer queue
Media server.
Optionally, each video frame in the sequence of frames of video includes multiple video data packets；
It is described that the sequence of frames of video is sent to media server to fix frame per second from buffer queue, comprising:
Described second, which defines each video data packet according to the header packet information of each video data packet depending on networked terminals, corresponds to
Number, it is described number be according to the frame number of packet serial number and the affiliated video frame of each video data packet generate；
Video data packet is successively sent to the media server from the buffer queue according to number；
Wherein, it for each video data packet for being sent to the media server, executes:
Judge frame number in the number of the first video data packet to be sent whether with next video counts to be sent
It is identical according to the frame number in the number of packet；
If they are the same, first video data packet is sent, records the transmission duration of first video data packet, and by institute
The transmission duration for stating the first video data packet adds up to the transmission total duration of the affiliated video frame of the first video data packet；
If it is different, when judging whether the transmission total duration of the affiliated video frame of the first video data packet is less than frame period
It is long；If being not less than, first video data packet is sent；If being less than, when waiting Jing Guo first video data packet
After length, first video data packet is sent；Wherein, the waiting time of first video data packet is the frame period duration
The difference of the transmission total duration of the affiliated video frame of the first video data packet is subtracted, the frame period duration is according to described solid
What framing rate determined.
Optionally, each audio frame in the audio frame sequence includes multiple packets of audio data；
It is described that the audio frame sequence is sent to media server with the fixed frame per second from buffer queue, comprising:
Described second, which defines each packets of audio data according to the header packet information of each packets of audio data depending on networked terminals, corresponds to
Number, it is described number be according to the frame number of packet serial number and the affiliated audio frame of each packets of audio data generate；
Packets of audio data is successively sent to the media services with frame period duration from the buffer queue according to number
Device；Wherein, the frame period duration is determined according to the fixed frame per second.
Optionally, the sound that the audio, video data based on depending on networking protocol is converted to internet protocol-based regards
Frequency evidence, comprising:
Audio data and video data are distinguished according to the packet header of the audio, video data based on view networking protocol；
To the packet header of the audio data of audio data addition Internet protocol；
To the packet header of the video data of video data addition Internet protocol.
Second aspect, the embodiment of the present application disclose a kind of view networked terminals, comprising:
Receiving module receives the base that the first view networked terminals are sent via view networked server for the second view networked terminals
In the audio, video data of view networking protocol；Wherein, the audio, video data based on depending on networking protocol is the first view networking
Terminal is to fix frame per second transmission；
Revolving die block is assisted, for the audio, video data based on depending on networking protocol to be converted to the sound of internet protocol-based
Video data；
Cache module is parsed, for the audio, video data of the internet protocol-based to be resolved to corresponding audio frame sequence
Column and sequence of frames of video, and cache to buffer queue；
Sending module is used for from the buffer queue respectively by the audio frame sequence and sequence of frames of video with described solid
Framing rate is sent to media server.
Optionally, each video frame in the sequence of frames of video includes multiple video data packets；
The sending module, is specifically used for:
Described second, which defines each video data packet according to the header packet information of each video data packet depending on networked terminals, corresponds to
Number, it is described number be according to the frame number of packet serial number and the affiliated video frame of each video data packet generate；
Video data packet is successively sent to the media server from the buffer queue according to number；
Wherein, it for each video data packet for being sent to the media server, executes:
Judge frame number in the number of the first video data packet to be sent whether with next video counts to be sent
It is identical according to the frame number in the number of packet；
If they are the same, first video data packet is sent, records the transmission duration of first video data packet, and by institute
The transmission duration for stating the first video data packet adds up to the transmission total duration of the affiliated video frame of the first video data packet；
If it is different, when judging whether the transmission total duration of the affiliated video frame of the first video data packet is less than frame period
It is long；If being not less than, first video data packet is sent；If being less than, when waiting Jing Guo first video data packet
After length, first video data packet is sent；Wherein, the waiting time of first video data packet is the frame period duration
The difference of the transmission total duration of the affiliated video frame of the first video data packet is subtracted, the frame period duration is according to described solid
What framing rate determined.
Optionally, each audio frame in the audio frame sequence includes multiple packets of audio data；
The sending module, is specifically used for:
Described second, which defines each packets of audio data according to the header packet information of each packets of audio data depending on networked terminals, corresponds to
Number, it is described number be according to the frame number of packet serial number and the affiliated audio frame of each packets of audio data generate；
Packets of audio data is successively sent to the media services with frame period duration from the buffer queue according to number
Device；Wherein, the frame period duration is determined according to the fixed frame per second.
Optionally, association's revolving die block, is specifically used for:
Audio data and video data are distinguished according to the packet header of the audio, video data based on view networking protocol；
To the packet header of the audio data of audio data addition Internet protocol；
To the packet header of the video data of video data addition Internet protocol.
The third aspect, the embodiment of the present application also disclose a kind of computer equipment, including memory, processor and are stored in
On memory and the computer program that can run on a processor, the processor are realized above-mentioned when executing the computer program
Any the method for first aspect.
Fourth aspect, the embodiment of the present application also disclose a kind of computer readable storage medium, described computer-readable to deposit
Storage media is stored with the computer program for executing above-mentioned any the method for first aspect.
Data transmission method provided by the embodiments of the present application based on view networking receives first by the second view networked terminals
The audio, video data based on view networking protocol sent depending on networked terminals via view networked server；Wherein, described based on view connection
The audio, video data of fidonetFido be described first depending on networked terminals with fix frame per second transmission；By described based on view networking protocol
Audio, video data is converted to the audio, video data of internet protocol-based；By the audio, video data solution of the internet protocol-based
Analysis is corresponding audio frame sequence and sequence of frames of video, and is cached to buffer queue；It respectively will be described from the buffer queue
Audio frame sequence and sequence of frames of video are sent to media server with the fixed frame per second.Audio, video data frame is realized in difference
Uniform transmission between protocol layer has ensured the smooth playing of audio-video.
Detailed description of the invention
Fig. 1 is a kind of networking schematic diagram of view networking provided by the embodiments of the present application；
Fig. 2 is a kind of hardware structural diagram of node server provided by the embodiments of the present application；
Fig. 3 is a kind of hardware structural diagram of access switch provided by the embodiments of the present application；
Fig. 4 is the hardware structural diagram that a kind of Ethernet association provided by the embodiments of the present application turns gateway；
Fig. 5 is the step flow chart of the data transmission method provided by the embodiments of the present application based on view networking；
Fig. 6 is the structural block diagram of view networked terminals provided by the embodiments of the present application.
Specific embodiment
In order to make the above objects, features, and advantages of the present application more apparent, with reference to the accompanying drawing and it is specific real
Applying mode, the present application will be further described in 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.
To make those skilled in the art more fully understand the embodiment of the present application, it is introduced below to depending on networking:
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 exchange (Packet Switching) or lattice network
Switching), meet Streaming using network packet exchange depending on networking technology (to be translated into stream, stream, streaming, be one
Kind data transferring technique, becomes the data received the stream of one steady and continuous, continuously sends out, the sound for hearing user
Sound or the image seen are very steady, and user can start to carry out on the screen before entire data transmission is complete it is clear
Look at) demand.Have flexible, the simple and low price of packet switch depending on networking technology, is provided simultaneously with the quality and safety of circuit switching
Guarantee, realizes the seamless connection of the whole network switched virtual circuit 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 circle), and multiple unified video platforms can
To form view networking；Each unified video platform can be interconnected by metropolitan area and wide area depending on networking.
Classify depending on networked devices
1.1 the embodiment of the present application 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 destination 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 304 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 the embodiment of the present application:
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 frame type, 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 3 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 |
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 datagrams, if the type of datagram is various
Protocol package, then the length of the part payload is 64 bytes, if the type of datagram is single group unicast packets, payload
Partial length is 32+1024=1056 byte, is 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 the embodiment of the present application: label, uniquely to describe a metropolitan area network equipment.
In this specification label definition and multiprotocol label switching (Multi-Protocol Label Switch,
MPLS the definition of label) is similar, it is assumed that there are two connections between equipment A and equipment B, then data packet is 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 into
The label (entering label) for entering 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.
Video file is made of multiple continuous pictures.I frame, also known as intracoded frame are a kind of included all information
Independent frame.Only use the data of I frame with regard to restructural complete image when decoding, I frame is that (its quality is direct for the reference frame of P frame and B frame
The quality of each frame after influencing in same group).I frame is the basic frame (first frame) of frame group GOP, in a group only one I frame,
First frame in video sequence is all always I frame, because it is key frame.
Depending on the stream medium data transmitted between networking and internet, it is required to carry out even packet processing, avoids making interchanger
At congestion, make troubles to the recording of media.Because video frame I frame is very big, many packets are divided, media server is receiving
These packets simultaneously need time-consuming certain time when framing, because being even packet transmission, are often surrounded by fixed time interval, such as to
Difference between the timestamp that I frame is beaten and the p frame of front has been greater than frame period duration, so seeing that picture has when playing
Slight Caton phenomenon.
In order to solve this problem, a kind of data transmission method based on view networking provided by the embodiments of the present application, such as Fig. 5 institute
Show, specifically includes the following steps:
Step 501: the second view networked terminals receive the first view networked terminals via view networked server transmission based on view
The audio, video data of networking protocol；Wherein, the audio, video data based on depending on networking protocol is the first view networked terminals
To fix frame per second transmission.
Step 502: the audio, video data based on depending on networking protocol is converted to the audio-video of internet protocol-based
Data.
Step 503: the audio, video data of the internet protocol-based is resolved into corresponding audio frame sequence and video
Frame sequence, and cache to buffer queue.
Step 504: respectively by the audio frame sequence and sequence of frames of video with the anchor-frame from the buffer queue
Rate is sent to media server.
It, in step 502, can be according to the audio-video based on view networking protocol in a kind of possible embodiment
Distinguish audio data and video data in the packet header of data；To the packet of the audio data of audio data addition Internet protocol
Head；To the packet header of the video data of video data addition Internet protocol.
It should be noted that the above method is only citing of the embodiment of the present application to protocol conversion mode, other reach phase
Mode with protocol conversion purpose also should belong within the protection scope of the embodiment of the present application.
In a kind of possible embodiment, each video frame in the sequence of frames of video includes multiple video datas
Packet；In step 504, described second each video data is defined according to the header packet information of each video data packet depending on networked terminals
Corresponding number is wrapped, the number is generated according to the frame number of packet serial number and the affiliated video frame of each video data packet
's；Video data packet is successively sent to the media server from the buffer queue according to number.
Wherein, the header packet information refers to a bit of contiguous memory in memory, one when transmitting network data
As can include packet header and load, header packet information is illustrated load, such as the type and length of data.It is fixed according to header packet information
Justice number, such as 4 byte representation video frame numbers, with 2 byte representation video data packets in the video frame packet serial number.
Taking out to the number is exactly a numerical value.
Wherein, it for each video data packet for being sent to the media server, executes:
Judge frame number in the number of the first video data packet to be sent whether with next video counts to be sent
It is identical according to the frame number in the number of packet:
If they are the same, first video data packet is sent, records the transmission duration of first video data packet, and by institute
The transmission duration for stating the first video data packet adds up to the transmission total duration of the affiliated video frame of the first video data packet.
If it is different, when judging whether the transmission total duration of the affiliated video frame of the first video data packet is less than frame period
It is long；If being not less than, first video data packet is sent；If being less than, when waiting Jing Guo first video data packet
After length, first video data packet is sent；Wherein, the waiting time of first video data packet is the frame period duration
The difference of the transmission total duration of the affiliated video frame of the first video data packet is subtracted, the frame period duration is according to described solid
What framing rate determined.
For example, whether judgement is changed according to the frame number in video data packet number depending on networked terminals and front and back is sent
Video data packet whether be the data packet for belonging to same video frame.If the frame number of a certain frame is 10,5 packets are divided into,
Packet serial number is exactly 0 to 4, and the frame number in the packet header of each packet is all 10.
Wherein, frame period is exactly the interval between two frames, and if 30 frames are per second, interval is exactly 33 milliseconds.Also have
Dynamic frame per second, for example, when evening picture substantially less fierce variation when, most of cameras will reduce acquisition
Frame per second.But on condition that as transmitting terminal with the frame per second of receiving end must be, the problems such as otherwise generating Caton.In step 504,
The transmission total duration of video frame and the relationship of frame period duration (if 33 milliseconds) are judged, if used between 0~33 millisecond
33 milliseconds subtract this video frame total duration as to wait duration to be sent, if do not withouted waiting in this section, directly
It sends.
In a kind of possible embodiment, each audio frame in the audio frame sequence includes multiple audio datas
Packet；In step 504, described second each audio data is defined according to the header packet information of each packets of audio data depending on networked terminals
Corresponding number is wrapped, the number is generated according to the frame number of packet serial number and the affiliated audio frame of each packets of audio data；Root
Packets of audio data is successively sent to the media server with frame period duration from the buffer queue according to number；Wherein, institute
Stating frame period duration is determined according to the fixed frame per second.
To sum up, second the media data flow received is cached depending on networked terminals, is successively taken out from data cached
Data carry out even frame processing, guarantee that the data that media server receives are to fix frame per second and send, so as to stamp just
True timestamp guarantees playing fluency.Timestamp is just beaten in data source for theoretically, but for some reason,
Timestamp is not beaten when sending data flow depending on the terminal networked, in the business of progress, receives audio, video data difference
It is decoded broadcasting, audio-visual synchronization problem almost can be ignored, this has benefited from the real-time forwarding interchanger of view networking
Design.But audio, video data can be problematic when across a network, from depending on being networked to internet, because internet is that have to prolong
When, second receive data flow depending on networked terminals after be dealt into media processing server, media processing server is receiving data flow
When voluntarily beat timestamp, guarantee the synchronization for the media file recorded.The above process is exited or is received in relative program
To being terminated when halt instruction.
In the specific implementation, regarding networked terminals equipment can be set-top box (Set Top Box, STB), commonly referred to as set-top box
Or box on machine, it is the equipment of connection a television set and outside source, it can change into the digital signal of compression in TV
Hold, and shows on a television set.In general, set-top box can connect camera and microphone, for acquiring video counts
According to the multi-medium datas such as audio data, also can connect television set, for multimedias such as playing video data and audio datas
Data.
Therefore in practical application, user can be by some operations in menu (gtml) file, for example dial opposite end
Set-top box Subscriber Number, triggering view networked terminals generate control service request instruction, be sent to view networked server.
It can also include external interface depending on networked terminals equipment, as USB interface, HDMI_OUTx2 interface, HDMI_IN connect
Mouth, card agriculture head interface, RCA (Radio Corporation of American, RC interface) and AV interface etc..
In conclusion being joined by the data transmission method provided by the embodiments of the present application based on view networking by the second view
Network termination receives the audio, video data based on view networking protocol that the first view networked terminals are sent via view networked server；Its
In, the audio, video data based on depending on networking protocol be described first depending on networked terminals with fix frame per second transmission；It will be described
The audio, video data of internet protocol-based is converted to based on the audio, video data depending on networking protocol；Described it will be based on internet protocol
The audio, video data of view resolves to corresponding audio frame sequence and sequence of frames of video, and caches to buffer queue；From the caching
The audio frame sequence and sequence of frames of video are sent to media server with the fixed frame per second respectively in queue.Realize sound
Uniform transmission of the video data frame between different agreement layers, has ensured the smooth playing of audio-video.
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, the embodiment of the present application is not limited by the described action sequence, because according to
According to the embodiment of the present application, 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 related movement not necessarily the application is implemented
Necessary to example.
Based on the same technical idea, referring to Fig. 6, the structural frames of view networked terminals provided by the embodiments of the present application are shown
Figure, the device can be applied in view networking, can specifically include following module:
Receiving module 601 receives the first view networked terminals for the second view networked terminals and sends via view networked server
Based on view networking protocol audio, video data；Wherein, the audio, video data based on depending on networking protocol is first view
Networked terminals are to fix frame per second transmission.
Revolving die block 602 is assisted, for the audio, video data based on depending on networking protocol to be converted to internet protocol-based
Audio, video data.
Cache module 603 is parsed, for the audio, video data of the internet protocol-based to be resolved to corresponding audio
Frame sequence and sequence of frames of video, and cache to buffer queue.
Sending module 604 is used for from the buffer queue respectively by the audio frame sequence and sequence of frames of video with institute
It states fixed frame per second and is sent to media server.
In a kind of possible embodiment, each video frame in the sequence of frames of video includes multiple video datas
Packet；The sending module 604, is specifically used for: the second view networked terminals are fixed according to the header packet information of each video data packet
The corresponding number of each video data packet of justice, the number is according to packet serial number and the affiliated video frame of each video data packet
Frame number generate；Video data packet is successively sent to the media server from the buffer queue according to number.
Wherein, it for each video data packet for being sent to the media server, executes:
Judge frame number in the number of the first video data packet to be sent whether with next video counts to be sent
It is identical according to the frame number in the number of packet:
If they are the same, first video data packet is sent, records the transmission duration of first video data packet, and by institute
The transmission duration for stating the first video data packet adds up to the transmission total duration of the affiliated video frame of the first video data packet.
If it is different, when judging whether the transmission total duration of the affiliated video frame of the first video data packet is less than frame period
It is long；If being not less than, first video data packet is sent；If being less than, when waiting Jing Guo first video data packet
After length, first video data packet is sent；Wherein, the waiting time of first video data packet is the frame period duration
The difference of the transmission total duration of the affiliated video frame of the first video data packet is subtracted, the frame period duration is according to described solid
What framing rate determined.
In a kind of possible embodiment, each audio frame in the audio frame sequence includes multiple audio datas
Packet；The then sending module 604, is specifically used for:
Described second, which defines each packets of audio data according to the header packet information of each packets of audio data depending on networked terminals, corresponds to
Number, it is described number be according to the frame number of packet serial number and the affiliated audio frame of each packets of audio data generate.According to number
Packets of audio data is successively sent to the media server with frame period duration from the buffer queue；Wherein, the interframe
It every duration is determined according to the fixed frame per second.
In a kind of possible embodiment, association's revolving die block 602 is specifically used for:
Audio data and video data are distinguished according to the packet header of the audio, video data based on view networking protocol；To described
Audio data adds the packet header of the audio data of Internet protocol；To the video data of video data addition Internet protocol
Packet header.
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 embodiments of the present application may be provided as method, apparatus or calculating
Machine program product.Therefore, the embodiment of the present application 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 application 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 application is referring to according to the method for the embodiment of the present application, 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 preferred embodiments of the embodiments of the present application have 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 all change and modification within the scope of the embodiments of the present application.
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 the data transmission method provided herein based on view networking and view networked terminals.Detailed Jie is carried out
It continues, specific examples are used herein to illustrate the principle and implementation manner of the present application, and the explanation of above embodiments is only
It is to be used to help understand the method for this application and its core ideas；At the same time, for those skilled in the art, according to this Shen
Thought please, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not manage
Solution is the limitation to the application.
Claims (10)
1. a kind of data transmission method based on view networking, which is characterized in that the described method includes:
Second view networked terminals receive the sound based on view networking protocol that the first view networked terminals are sent via view networked server
Video data；Wherein, the audio, video data based on depending on networking protocol be described first depending on networked terminals with fix frame per second hair
It send；
The audio, video data based on depending on networking protocol is converted to the audio, video data of internet protocol-based；
The audio, video data of the internet protocol-based is resolved into corresponding audio frame sequence and sequence of frames of video, and is cached
To buffer queue；
The audio frame sequence and sequence of frames of video are sent to media with the fixed frame per second respectively from the buffer queue
Server.
2. the method as described in claim 1, which is characterized in that each video frame in the sequence of frames of video includes multiple views
Frequency data packet；
It is described that the sequence of frames of video is sent to media server to fix frame per second from buffer queue, comprising:
Described second defines the corresponding volume of each video data packet according to the header packet information of each video data packet depending on networked terminals
Number, the number is generated according to the frame number of packet serial number and the affiliated video frame of each video data packet；
Video data packet is successively sent to the media server from the buffer queue according to number；
Wherein, it for each video data packet for being sent to the media server, executes:
Judge frame number in the number of the first video data packet to be sent whether with next video data packet to be sent
Number in frame number it is identical；
If they are the same, first video data packet is sent, records the transmission duration of first video data packet, and by described the
The transmission duration of one video data packet adds up to the transmission total duration of the affiliated video frame of the first video data packet；
If it is different, judging whether the transmission total duration of the affiliated video frame of the first video data packet is less than frame period duration；If
It is not less than, then sends first video data packet；If being less than, after the waiting time of first video data packet,
Send first video data packet；Wherein, the waiting time of first video data packet is that the frame period duration subtracts
The difference of the transmission total duration of the affiliated video frame of first video data packet, the frame period duration are according to the anchor-frame
What rate determined.
3. the method as described in claim 1, which is characterized in that each audio frame in the audio frame sequence includes multiple sounds
Frequency data packet；
It is described that the audio frame sequence is sent to media server with the fixed frame per second from buffer queue, comprising:
Described second defines the corresponding volume of each packets of audio data according to the header packet information of each packets of audio data depending on networked terminals
Number, the number is generated according to the frame number of packet serial number and the affiliated audio frame of each packets of audio data；
Packets of audio data is successively sent to the media server with frame period duration from the buffer queue according to number；Its
In, the frame period duration is determined according to the fixed frame per second.
4. the method as described in claim 1, which is characterized in that described to turn the audio, video data based on view networking protocol
It is changed to the audio, video data of internet protocol-based, comprising:
Audio data and video data are distinguished according to the packet header of the audio, video data based on view networking protocol；
To the packet header of the audio data of audio data addition Internet protocol；
To the packet header of the video data of video data addition Internet protocol.
5. a kind of view networked terminals, which is characterized in that described to include: depending on networked terminals
Receiving module receives the first view networked terminals via view networked server transmission based on view for the second view networked terminals
The audio, video data of networking protocol；Wherein, the audio, video data based on depending on networking protocol is the first view networked terminals
To fix frame per second transmission；
Revolving die block is assisted, for the audio, video data based on depending on networking protocol to be converted to the audio-video of internet protocol-based
Data；
Parse cache module, for by the audio, video data of the internet protocol-based resolve to corresponding audio frame sequence and
Sequence of frames of video, and cache to buffer queue；
Sending module is used for from the buffer queue respectively by the audio frame sequence and sequence of frames of video with the anchor-frame
Rate is sent to media server.
6. view networked terminals as claimed in claim 5, which is characterized in that each video frame in the sequence of frames of video includes
Multiple video data packets；
The sending module, is specifically used for:
Described second defines the corresponding volume of each video data packet according to the header packet information of each video data packet depending on networked terminals
Number, the number is generated according to the frame number of packet serial number and the affiliated video frame of each video data packet；
Video data packet is successively sent to the media server from the buffer queue according to number；
Wherein, it for each video data packet for being sent to the media server, executes:
Judge frame number in the number of the first video data packet to be sent whether with next video data packet to be sent
Number in frame number it is identical；
If they are the same, first video data packet is sent, records the transmission duration of first video data packet, and by described the
The transmission duration of one video data packet adds up to the transmission total duration of the affiliated video frame of the first video data packet；
If it is different, judging whether the transmission total duration of the affiliated video frame of the first video data packet is less than frame period duration；If
It is not less than, then sends first video data packet；If being less than, after the waiting time of first video data packet,
Send first video data packet；Wherein, the waiting time of first video data packet is that the frame period duration subtracts
The difference of the transmission total duration of the affiliated video frame of first video data packet, the frame period duration are according to the anchor-frame
What rate determined.
7. view networked terminals as claimed in claim 5, which is characterized in that each audio frame in the audio frame sequence includes
Multiple packets of audio data；
The sending module, is specifically used for:
Described second defines the corresponding volume of each packets of audio data according to the header packet information of each packets of audio data depending on networked terminals
Number, the number is generated according to the frame number of packet serial number and the affiliated audio frame of each packets of audio data；
Packets of audio data is successively sent to the media server with frame period duration from the buffer queue according to number；Its
In, the frame period duration is determined according to the fixed frame per second.
8. view networked terminals as claimed in claim 5, which is characterized in that association's revolving die block is specifically used for:
Audio data and video data are distinguished according to the packet header of the audio, video data based on view networking protocol；
To the packet header of the audio data of audio data addition Internet protocol；
To the packet header of the video data of video data addition Internet protocol.
9. a kind of computer equipment including memory, processor and stores the meter that can be run on a memory and on a processor
Calculation machine program, which is characterized in that the processor realizes any side of Claims 1-4 when executing the computer program
Method.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has perform claim
It is required that the computer program of 1 to 4 any the method.
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| CN201910430938.XA CN110267099A (en) | 2019-05-22 | 2019-05-22 | A kind of data transmission method and view networked terminals based on view networking |
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| CN201910430938.XA CN110267099A (en) | 2019-05-22 | 2019-05-22 | A kind of data transmission method and view networked terminals based on view networking |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958331A (en) * | 2019-12-27 | 2020-04-03 | 视联动力信息技术股份有限公司 | Data transmission method and terminal |
| CN111030995A (en) * | 2019-11-11 | 2020-04-17 | 视联动力信息技术股份有限公司 | Video information processing method and device based on video network |
| CN111182024A (en) * | 2019-11-20 | 2020-05-19 | 视联动力信息技术股份有限公司 | Data synchronization method, device and storage medium |
| CN111491016A (en) * | 2020-04-02 | 2020-08-04 | 北京代码乾坤科技有限公司 | Synchronous data processing method and device |
| CN112153322A (en) * | 2020-09-23 | 2020-12-29 | 北京字跳网络技术有限公司 | Data distribution method, device, equipment and storage medium |
| CN112235597A (en) * | 2020-09-17 | 2021-01-15 | 深圳市捷视飞通科技股份有限公司 | Method and device for synchronous protection of streaming media live broadcast audio and video and computer equipment |
| CN113556292A (en) * | 2021-06-18 | 2021-10-26 | 珠海惠威科技有限公司 | Audio playing method and system of IP network |
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2019
- 2019-05-22 CN CN201910430938.XA patent/CN110267099A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111030995A (en) * | 2019-11-11 | 2020-04-17 | 视联动力信息技术股份有限公司 | Video information processing method and device based on video network |
| CN111182024A (en) * | 2019-11-20 | 2020-05-19 | 视联动力信息技术股份有限公司 | Data synchronization method, device and storage medium |
| CN111182024B (en) * | 2019-11-20 | 2022-08-02 | 视联动力信息技术股份有限公司 | Data synchronization method, device and storage medium |
| CN110958331A (en) * | 2019-12-27 | 2020-04-03 | 视联动力信息技术股份有限公司 | Data transmission method and terminal |
| CN111491016A (en) * | 2020-04-02 | 2020-08-04 | 北京代码乾坤科技有限公司 | Synchronous data processing method and device |
| CN111491016B (en) * | 2020-04-02 | 2023-08-25 | 北京代码乾坤科技有限公司 | Synchronous data processing method and device |
| CN112235597A (en) * | 2020-09-17 | 2021-01-15 | 深圳市捷视飞通科技股份有限公司 | Method and device for synchronous protection of streaming media live broadcast audio and video and computer equipment |
| CN112235597B (en) * | 2020-09-17 | 2022-07-29 | 深圳市捷视飞通科技股份有限公司 | Method and device for synchronous protection of streaming media live broadcast audio and video and computer equipment |
| CN112153322A (en) * | 2020-09-23 | 2020-12-29 | 北京字跳网络技术有限公司 | Data distribution method, device, equipment and storage medium |
| CN113556292A (en) * | 2021-06-18 | 2021-10-26 | 珠海惠威科技有限公司 | Audio playing method and system of IP network |
| CN113556292B (en) * | 2021-06-18 | 2022-09-13 | 珠海惠威科技有限公司 | Audio playing method and system of IP network |
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