CN108989273A - A kind of method and apparatus obtaining video flowing - Google Patents
A kind of method and apparatus obtaining video flowing Download PDFInfo
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- CN108989273A CN108989273A CN201710534055.4A CN201710534055A CN108989273A CN 108989273 A CN108989273 A CN 108989273A CN 201710534055 A CN201710534055 A CN 201710534055A CN 108989273 A CN108989273 A CN 108989273A
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
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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
- H04N21/437—Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server
-
- 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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6125—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via Internet
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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
- H04N21/61—Network physical structure; Signal processing
- H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
- H04N21/6175—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving transmission via Internet
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention provides a kind of method and apparatus for obtaining video flowing, are applied in view networking, which comprises receive what view networked terminals were sent, for the first data packet of web camera；Wherein, the web camera is located in Ethernet；Determine the communication protocol that the web camera uses；Based on the communication protocol, first data packet is converted into the second data packet；Second data packet is sent to the web camera；Wherein, the web camera is used for after receiving second data packet, and the video flowing of acquisition is returned to the view networked terminals.Through the embodiment of the present invention, it realizes and is communicated using the agreement being adapted to IP Camera, improve the compatibility that view networked terminals are communicated with web camera.
Description
Technical field
The present invention relates to view networking arenas, the method and a kind of acquisition video flowing more particularly to a kind of acquisition video flowing
Device.
Background technique
It with the fast development of science and technology, is widely used depending on networking technology in all trades and professions, such as tele-medicine, peace
The fields such as anti-, emergency command, the application depending on networking technology bring great convenience.
Currently, proposing that national guard and alarm system technical committee for standardization (TCST) is returned by scientific and technological information office of the Ministry of Public Security
Mouthful, the Ministry of Public Security one etc. more units drafted GB/T 28181 jointly, GB/T 28181 transmits video monitoring information, hands over
It changes, control technology proposes the requirement of standard.
But since GB/T 28181 is not provided with unified technical specification, under the principle for following GB/T 28181,
Different manufacturers are all different to the application of GB/T 28181 in web camera (IP Camera), so that view networked terminals
There is bottleneck in data interaction between web camera, compatibly carries out with the web camera of each producer depending on networked terminals
Communication.
Summary of the invention
In view of the above problems, the embodiment of the present invention is proposed in order to provide overcoming the above problem or at least being partially solved
A kind of method for obtaining video flowing of the above problem and a kind of device for obtaining video flowing.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of methods for obtaining video flowing, are applied to view networking
In, which comprises
Receive what view networked terminals were sent, for the first data packet of web camera；Wherein, the network shooting seat in the plane
In Ethernet；
Determine the communication protocol that the web camera uses；
Based on the communication protocol, first data packet is converted into the second data packet；
Second data packet is sent to the web camera；Wherein, the web camera is for receiving
After second data packet, the video flowing of acquisition is returned to the view networked terminals.
Preferably, first data packet includes that video flowing obtains signaling, described to be based on the communication protocol, by described the
The step of one data packet is converted to the second data packet include:
The view networking protocol packet header of first data packet is removed, and extracts the video flowing and obtains signaling；
Determine the communication protocol packet header of the communication protocol；
The video flowing is obtained into signaling and the communication protocol packet header is organized into the second data packet.
Preferably, first data packet includes the mark of the web camera, the determination web camera
The step of communication protocol of use includes:
In preset database, manufacturer corresponding with the mark is searched；
Determine the corresponding communication protocol of the manufacturer.
Preferably, described the step of second data packet is sent to the web camera, includes:
Determine ethernet packet header；
The ethernet packet header is added for second data packet, and the second data packet after the addition is sent to institute
State web camera.
Preferably, the communication protocol includes the agreement defined based on GB/T 28181.
The embodiment of the invention discloses a kind of devices for obtaining video flowing, are applied in view networking, described device includes:
First packet-receiving module, for receiving view networked terminals transmission, for the first data of web camera
Packet；Wherein, the web camera is located in Ethernet；
Communication protocol determining module, the communication protocol used for determining the web camera；
First data packet is converted to the second number for being based on the communication protocol by the second data packet conversion module
According to packet；
Second packet sending module, for second data packet to be sent to the web camera；Wherein, described
Web camera is used for after receiving second data packet, and the video flowing of acquisition is returned to the view networked terminals.
Preferably, first data packet includes that video flowing obtains signaling, and the second data packet conversion module includes:
Video flowing obtains signaling extracting sub-module, for removing the view networking protocol packet header of first data packet, and mentions
It takes out the video flowing and obtains signaling；
Communication protocol packet header determines submodule, for determining the communication protocol packet header of the communication protocol；
Second data packet tissue submodule, for video flowing acquisition signaling and the communication protocol packet header to be organized into
Second data packet.
Preferably, first data packet includes the mark of the web camera, the communication protocol determining module packet
It includes:
Submodule is searched by manufacturer, for searching manufacturer corresponding with the mark in preset database；
Manufacturer's communication protocol determines submodule, for determining the corresponding communication protocol of the manufacturer.
Preferably, second packet sending module includes:
Ethernet packet header determines submodule, for determining ethernet packet header；
Sending submodule is added, for adding the ethernet packet header for second data packet, and will be after the addition
The second data packet be sent to the web camera.
Preferably, the communication protocol includes that the embodiment of the present invention includes following excellent for the agreement based on the definition of GB/T 28181
Point:
In embodiments of the present invention, it is sent by receiving view networked terminals, for the network shooting being located in Ethernet
First data packet of machine determines the communication protocol that web camera uses, the communication protocol is then based on, by the first data packet
The second data packet is converted to, then the second data packet is sent to web camera, web camera is receiving the second data packet
Afterwards, the video flowing that acquisition is returned to view networked terminals, is realized and is communicated using the agreement being adapted to IP Camera, is promoted
The compatibility that view networked terminals are communicated with web camera.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by institute in the description to the embodiment of the present invention
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
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 the method for acquisition video flowing of the embodiment of the present invention；
Fig. 6 is a kind of network connection schematic diagram of the embodiment of the present invention；
Fig. 7 is a kind of flow chart of middle layer access view networking of the embodiment of the present invention；
Fig. 8 is a kind of structural block diagram of the device of acquisition video flowing of the embodiment of the present invention.
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.Obviously, described embodiments are some of the embodiments of the present invention, without
It is whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
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 (NetworkTechnology)
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 (ServerTechnology)
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 association turns gateway), terminal (including various set-top boxes, encoding board, memory etc.).Metropolitan Area Network (MAN) can be divided on the whole depending on networking
(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 association turns 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 mesh way 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, according to the view of packet networking mesh if there is Bao Ze
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 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 datagrams, 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.
Based on the above-mentioned characteristic of view networking, the core idea of the embodiment of the present invention is proposed, it can be with using web camera
The characteristics of transmitting video/audio to Ethernet in real time, by the data conversion of transmitting web camera at can network in view
The data of middle transmission, to realize web camera and regard the communication process of networked terminals.
Referring to Fig. 5, a kind of step flow chart of the method for acquisition video flowing of the embodiment of the present invention is shown.
The embodiment of the present invention can be applied in view networking, such as Fig. 6, regard networked terminals 601 can by middle layer 602 and
Web camera 603 in internet is connected.
It wherein, may include the entities terminals such as set-top box (SetTopBox, STB) depending on networked terminals, set-top box can be referred to as
Box on set-top box or machine is the equipment of connection a television set and outside source, it can change into the digital signal of compression
Television content, and show on a television set.In general, set-top box can connect camera and microphone, for acquiring
The multi-medium datas such as video data and audio data, also can connect television set, for playing video data and audio data etc.
Multi-medium data.
Can also include virtual view networked terminals depending on networked terminals, be depending on networked terminals virtually in order to realize particular service and
The terminal of access view networking, refers to a kind of special software, it can create a kind of environment between terminal and terminal user, and
Terminal user is then the environment that is created based on this software come operating software, it is virtual can be as real machine one depending on networked terminals
Sample runs the software realization of the terminal of program.
Web camera is a new generation video camera caused by a kind of combination traditional cameras and network technology, it can general
Image reaches the earth other end by network, and the viewer of distal end is not required to any professional software, as long as the network of standard is clear
Device of looking at can monitor its image.Web camera generally by camera lens, image, sound transducer, A/D converter, image, sound,
The part such as controller network server, external alert, control interface forms.
Middle layer can be the server that can connect internet and view networking simultaneously, be provided with double netcard, such as association turns clothes
Business device, middle layer can be the server of entity, or virtual server.
As a kind of preferable example, middle layer can also have the function of that Ethernet association turns gateway, and every allows networking
Ethernet association turns gateway and all registers in node server, and the registration information that Ethernet association turns gateway has Ethernet association to turn gateway
The intrinsic informations such as sequence number (including device type and equipment identification information), downlink port number, mask section, do not register with
Too net association, which turns gateway, to network.
Middle layer can turn the network access mode access view networking of gateway using Ethernet association, as shown in fig. 7, Ethernet association turns
Gateway can access view networking in the following way:
S11 issues inquiry packet depending on the node server with centralized control functions in networking；
Node server sends inquiry packet to each port.
S12 after Ethernet association turns gateway power-up initializing, receives inquiry packet, returns and turn gateway sequence comprising Ethernet association
Number response bag；
Assuming that Ethernet association turns gateway and receives the inquiry packet that some port (such as port 0) issues.
S13, node server search Ethernet association corresponding with the sequence number in Registry and turn gateway information,
It includes that Ethernet association turns gateway MAC address and Ethernet association turns the terminal bound under gateway that Ethernet association, which turns gateway information,
MAC Address；
Node server receives after Ethernet association turns the response bag of gateway sending and is known that under port 0 and has connect an Ethernet
Association turns gateway, then searches internal Registry.
S14, node server turn gateway to Ethernet association and send the order that networks, and include ether in the networking order
Net association, which turns gateway, assists in the address of view networking and Ethernet and turns the MAC Address of gateway；
I.e. node server will distribute to Ethernet with assisting the view networking address for turning gateway and pre-registered ethernet mac
Location orders notice Ethernet association to turn gateway by networking.
S15, the Ethernet association turn to return to response after gateway receives networking order, and Ethernet association turns gateway accessing view connection
Net；
Ethernet association turn gateway receive networking order after, be known that oneself access view networking address and in Ethernet
MAC Address.
S16, node server timing turn gateway to the Ethernet of networking association and issue device status inquiries instruction, and checking should be with
Too net association turns whether gateway works normally；
Node server receives networking command response, is known that Ethernet association turns gateway and networked, later can timing
(such as per second) sends out device status inquiries instruction to port 0.If node server does not receive shape within a certain period of time (such as 6 seconds)
State inquiry response is considered as Ethernet association and turns gateway and have been removed from network, no longer sending device status query instruction, continues
Inquiry packet is sent to port 0.
Ethernet association is turned the terminal MAC address and terminal MAC address bound under gateway by S17, node server
With the mapping of the view networking address to be allocated to terminal, Ethernet association is all notified to turn gateway.
Node server knows that Ethernet association turns under gateway also binding and has a terminal according to Registry, therefore can will be with
Too net association turns the terminal MAC address bound under gateway and terminal MAC address and the mapping for regarding networking address to be allocated, hair
It gives Ethernet association and turns gateway.
By the above networking process, Ethernet association turn gateway be aware of oneself view networking address, ethernet mac address,
The mapping of its lower terminal MAC address bound and terminal MAC address and the view networking address to be allocated to terminal.
Since then, access procedure is completed.
After Ethernet association turns gateway accessing to view networking, it can be communicated with depending on networked terminals.
It is described below from middle layer side, can specifically include following steps:
Step 501, receive what view networked terminals were sent, for the first data packet of web camera；Wherein, the network
Position for video camera is in Ethernet；
During video monitoring, web camera can acquire video flowing, when needing to obtain network depending on networked terminals
When the video flowing of video camera acquisition, the first data packet can be sent for web camera, middle layer can receive the first data
Packet.
As an example, the data packet that the first data packet can be generated for view networked terminals based on view networking protocol, such as
8714 agreements or 8704 agreements, the following table 1 and 2 are respectively illustrated 8704 agreements and 8714 agreements.
Table 1
Table 2
In the concrete realization, it can be communicated using depending on communication mode in networking depending on networked terminals with middle layer, specifically
It is as follows:
It should be appreciated that networking is regarded as the network with centralized control functions, including main control server and undernet equipment,
The undernet equipment includes view networked terminals, which includes node server.
Based on this, main control server configuration is when time downstream communications link of service；By source terminal (i.e. view networked terminals) hair
That send works as time data packet (i.e. the first data packet) of service, and it is (i.e. intermediate to be sent to purpose terminal according to the downstream communications link
Layer).I.e. by notifying switching equipment to match table for time downstream communications link of service is worked as by main control server, it is then based on this and matches
The table set carries out the transmission of data packet.
Specifically, configuring when time downstream communications link of service includes: that notice is worked as involved by time downstream communications link of service
And switching equipment match 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 net includes access mesh portions, in access net, which is node server,
Undernet 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 include following sub-step:
Sub-step S21: the service request protocol package that main control server is initiated according to source terminal is 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 S22: downstream communication ports information of the main control server according to control server, data packet inside it
The downlink port that setting is oriented to when time data packet of service in the table of location；And believe according to the downstream communication ports of access switch
Breath, to corresponding access switch sending port configuration order；
Sub-step S23: in the data packet addressed table of access switch foundation port configuration command inside it, setting is when secondary
The downlink port that the data packet of service is oriented to.
For the Multicast Communication Service in access net, main control server obtains the downstream communications link letter when time service
The step of breath may include following sub-step:
Sub-step S31: main control server obtains 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；Wherein,
It include service number in service content information；
Sub-step S32: main control server according to the service number in preset content-address mapping table, extraction source
The access net address of terminal；
Sub-step S33: 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, the communication protocol that the web camera uses is determined；
Wherein, communication protocol may include the agreement defined based on GB/T 28181.
GB/T28181 be " safety precaution video monitoring networking system information transmissions, exchange, control technology requirement ", be by
Scientific and technological information office of the Ministry of Public Security proposes, is under the jurisdiction of national guard and alarm system technical committee for standardization (TCST) (SAC/TC100),
The Ministry of Public Security one etc. a national standard drafting jointly of more units.
GB/T28181 defines information transmission in city monitoring alarm networking system, exchange, the interconnection architecture controlled, leads to
Believe protocol architecture, transmission, exchange, the basic demand and security requirement, and control, transmission flow and protocol interface of control etc.
Technical requirements.
Since understanding of each manufacturer to GB/T28181 is different, the agreement that different manufacturers is defined based on GB/T 28181
It can have differences, if manufacturer Haikang and big China there is difference in the detection character string of mobile detection function, different vendor
The communication protocol that IP Camera uses also can be different, and the embodiment of the present invention can determine the communication protocols that web camera uses
View.
In one preferred embodiment of the invention, the first data packet may include the mark of web camera, then step
502 may include following sub-step:
Sub-step S41 searches manufacturer corresponding with the mark in preset database；
Since there is corresponding identification section in each manufacturer, the mark of the web camera of each manufacturer can be in its corresponding mark
Know in section, the corresponding relationship of the mark of web camera and manufacturer can be stored in preset database by the embodiment of the present invention
In.
After getting the first data packet, the embodiment of the present invention can extract IP Camera from the first data packet
Then mark searches manufacturer corresponding with mark in preset database.
Sub-step S42 determines the corresponding communication protocol of the manufacturer.
In embodiments of the present invention, the corresponding relationship that manufacturer and communication protocol can also be stored in database is determining net
After manufacturer belonging to network camera, the corresponding communication protocol of manufacturer can be determined.
Step 503, it is based on the communication protocol, first data packet is converted into the second data packet；
After determining the communication protocol that web camera uses, middle layer can be by the first data based on view networking protocol
Packet is converted to the second data packet based on communication protocol.
In one preferred embodiment of the invention, the first data packet may include that video flowing obtains signaling, be used for net
Network video camera request video flowing, then step 503 may include following sub-step:
Sub-step 51, removes the view networking protocol packet header of first data packet, and extracts the video flowing and obtain letter
It enables；
In embodiments of the present invention, data packet may include packet header and backpack body, and the data packet of different agreement has difference
Packet header, then the packet header of the first data packet can for view networking protocol packet header, backpack body can for video flowing obtain signaling, such as table 3
It is shown.
| Packet header | Backpack body |
| Depending on networking protocol packet header | Video flowing obtains signaling |
Table 3
It is located in backpack body since video flowing obtains signaling, middle layer can remove the first data packet based on view networking protocol
View networking protocol packet header, extracted from backpack body video flowing obtain signaling.
Sub-step S52 determines the communication protocol packet header of the communication protocol；
After determining the communication protocol that web camera uses, namely determine the composed structure of communication protocol, middle layer can
To propose header packet information, such as source address, destination address from depending on networking packet header, according to the composed structure of communication protocol by packet header
Information is reorganized into communication protocol packet header.
The video flowing is obtained signaling and the communication protocol packet header is organized into the second data packet by sub-step S53.
After determining that communication protocol packet header and video flowing obtain signaling, video flowing can be obtained signaling as packet by middle layer
Backpack body and packet header are organized into the second data packet, as shown in table 4 by body.
| Packet header | Backpack body |
| Communication protocol packet header | Video flowing obtains signaling |
Table 4
Step 504, second data packet is sent to the web camera；Wherein, the web camera is used for
After receiving second data packet, the video flowing of acquisition is returned to the view networked terminals.
After obtaining the second data packet, the second data packet can be sent to web camera by Ethernet by middle layer,
After web camera obtains the second data packet, it can therefrom extract video flowing and obtain signaling, obtain signaling tune according to video flowing
Video stream is sent out view middle layer by the video flowing for taking acquisition, and the video flowing received is added view networking protocol packet by middle layer
View networked terminals are sent to after head.
In one preferred embodiment of the invention, step 504 may include following sub-step:
Sub-step S61, determines ethernet packet header；
Since web camera is located in Ethernet, middle layer, can be according to Ethernet after receiving the first data packet
Protocol rule, such as TCP/IP determine corresponding ethernet packet header.
Sub-step S62 adds the ethernet packet header for second data packet, and by the second data after the addition
Packet is sent to the web camera.
After obtaining the second data packet, middle layer can add Ethernet packet using the second data packet as backpack body for backpack body
The second data packet for adding ethernet packet header is sent in web camera, as shown in table 5 by head by Ethernet.
Table 5
In embodiments of the present invention, it is sent by receiving view networked terminals, for the network shooting being located in Ethernet
First data packet of machine determines the communication protocol that web camera uses, the communication protocol is then based on, by the first data packet
The second data packet is converted to, then the second data packet is sent to web camera, web camera is receiving the second data packet
Afterwards, the video flowing that acquisition is returned to view networked terminals, is realized and is communicated using the agreement being adapted to IP Camera, is promoted
The compatibility that view networked terminals are communicated with web camera.
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.
Referring to Fig. 8, a kind of structural block diagram of the device of acquisition video flowing of the embodiment of the present invention is shown, is applied to view connection
In net, following module can specifically include:
First packet-receiving module 801, for receiving view networked terminals transmission, for the first number of web camera
According to packet；Wherein, the web camera is located in Ethernet；
Communication protocol determining module 802, the communication protocol used for determining the web camera；
First data packet is converted to second for being based on the communication protocol by the second data packet conversion module 803
Data packet；
Second packet sending module 804, for second data packet to be sent to the web camera；Wherein,
The web camera is used for after receiving second data packet, and the video flowing of acquisition is returned to the view networked terminals.
In a kind of preferred embodiment of the present invention, first data packet includes that video flowing obtains signaling, second number
Include: according to packet conversion module 803
Video flowing obtains signaling extracting sub-module, for removing the view networking protocol packet header of first data packet, and mentions
It takes out the video flowing and obtains signaling；
Communication protocol packet header determines submodule, for determining the communication protocol packet header of the communication protocol；
Second data packet tissue submodule, for video flowing acquisition signaling and the communication protocol packet header to be organized into
Second data packet.
In a kind of preferred embodiment of the present invention, first data packet includes the mark of the web camera, described
Communication protocol determining module 802 includes:
Submodule is searched by manufacturer, for searching manufacturer corresponding with the mark in preset database；
Manufacturer's communication protocol determines submodule, for determining the corresponding communication protocol of the manufacturer.
In a kind of preferred embodiment of the present invention, second packet sending module 804 includes:
Ethernet packet header determines submodule, for determining ethernet packet header；
Sending submodule is added, for adding the ethernet packet header for second data packet, and will be after the addition
The second data packet be sent to the web camera.
In a kind of preferred embodiment of the present invention, the communication protocol includes the agreement defined based on GB/T 28181
In embodiments of the present invention, it is sent by receiving view networked terminals, for the network shooting being located in Ethernet
First data packet of machine determines the communication protocol that web camera uses, the communication protocol is then based on, by the first data packet
The second data packet is converted to, then the second data packet is sent to web camera, web camera is receiving the second data packet
Afterwards, the video flowing that acquisition is returned to view networked terminals, is realized and is communicated using the agreement being adapted to IP Camera, is promoted
The compatibility that view networked terminals are communicated with web camera.
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 method for obtaining video flowing provided by the present invention and a kind of device for obtaining video flowing, carry out
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (10)
1. a kind of method for obtaining video flowing is applied in view networking, which is characterized in that the described method includes:
Receive what view networked terminals were sent, for the first data packet of web camera；Wherein, the web camera be located at
Too in net；
Determine the communication protocol that the web camera uses；
Based on the communication protocol, first data packet is converted into the second data packet；
Second data packet is sent to the web camera；Wherein, the web camera be used for receive it is described
After second data packet, the video flowing of acquisition is returned to the view networked terminals.
2. the method according to claim 1, wherein first data packet includes that video flowing obtains signaling, institute
The step of stating based on the communication protocol, first data packet is converted to the second data packet include:
The view networking protocol packet header of first data packet is removed, and extracts the video flowing and obtains signaling；
Determine the communication protocol packet header of the communication protocol；
The video flowing is obtained into signaling and the communication protocol packet header is organized into the second data packet.
3. method according to claim 1 or 2, which is characterized in that first data packet includes the web camera
Mark, the step of communication protocol that the determination web camera uses includes:
In preset database, manufacturer corresponding with the mark is searched；
Determine the corresponding communication protocol of the manufacturer.
4. second data packet be sent to the network taking the photograph the method according to claim 1, wherein described
The step of camera includes:
Determine ethernet packet header；
The ethernet packet header is added for second data packet, and the second data packet after the addition is sent to the net
Network video camera.
5. the method according to claim 1, wherein the communication protocol includes being defined based on GB/T 28181
Agreement.
6. a kind of device for obtaining video flowing is applied in view networking, which is characterized in that described device includes:
First packet-receiving module, for receiving view networked terminals transmission, for the first data packet of web camera；Its
In, the web camera is located in Ethernet；
Communication protocol determining module, the communication protocol used for determining the web camera；
First data packet is converted to the second data packet for being based on the communication protocol by the second data packet conversion module；
Second packet sending module, for second data packet to be sent to the web camera；Wherein, the network
Video camera is used for after receiving second data packet, and the video flowing of acquisition is returned to the view networked terminals.
7. device according to claim 6, which is characterized in that first data packet includes that video flowing obtains signaling, institute
Stating the second data packet conversion module includes:
Video flowing obtains signaling extracting sub-module, for removing the view networking protocol packet header of first data packet, and extracts
The video flowing obtains signaling；
Communication protocol packet header determines submodule, for determining the communication protocol packet header of the communication protocol；
Second data packet tissue submodule, for video flowing acquisition signaling and the communication protocol packet header to be organized into second
Data packet.
8. device according to claim 6 or 7, which is characterized in that first data packet includes the web camera
Mark, the communication protocol determining module includes:
Submodule is searched by manufacturer, for searching manufacturer corresponding with the mark in preset database；
Manufacturer's communication protocol determines submodule, for determining the corresponding communication protocol of the manufacturer.
9. device according to claim 6, which is characterized in that second packet sending module includes:
Ethernet packet header determines submodule, for determining ethernet packet header；
Sending submodule is added, for adding the ethernet packet header for second data packet, and by the after the addition
Two data packets are sent to the web camera.
10. device according to claim 6, which is characterized in that the communication protocol includes being defined based on GB/T 28181
Agreement.
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Application publication date: 20181211 |
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