CN104284098A - Method and system for processing video data - Google Patents
Method and system for processing video data Download PDFInfo
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- CN104284098A CN104284098A CN201310276055.0A CN201310276055A CN104284098A CN 104284098 A CN104284098 A CN 104284098A CN 201310276055 A CN201310276055 A CN 201310276055A CN 104284098 A CN104284098 A CN 104284098A
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Abstract
The invention discloses a method and system for processing video data. According to the method, a video processor receives video data streams from one or more input devices; the video processor carries out partition and coding processing on the video data streams according to one or more display processors connected to the video processor and encapsulates calibration time markers into all data packets after the partition and coding processing is carried out, the calibration time markers are adopted to enable the display processors to synchronously display all the data packets on a television spliced wall, wherein the data packets are obtained after the partition and coding processing is carried out, and the calibration time markers are obtained after calibration is carried out according to the current time marker of a server when the video processor carries out partition and coding processing on the video data streams; the video processor sends the data packets obtained after the partition and coding processing is carried out to the display processors. In this way, under the condition that the number of cut screen blocks on the television spliced wall is large, the accuracy of synchronous display of a distributed large screen control system is improved, and user experience is improved.
Description
Technical field
The present invention relates to field of video displaying, in particular to a kind of processing method and system of video data.
Background technology
At present, centralized large-screen control system refers to the constrained input being carried out vision signal and/or audio signal by video line, vision signal and/or audio signal pass through Peripheral Component Interconnect standard (Peripheral Component Interconnect in internal system, referred to as PCI) or simulate the large-screen controller switching and carry out transmitting, be the main flow of screen control technology in the market.
But, adopt centralized large-screen to control to there is following defect:
(1) centralized large-screen control system utilizes capture card to access signal usually, and signal access capability needs the restriction being subject to the factors such as capture card ability, cabinet slot number, bus bandwidth, and its signal access capability is limited.
(2) centralized large-screen control system utilizes central processing unit (Central Processing Unit, referred to as CPU) to process total data, and utilize PCI/PCI-X bus transfer data, its processing speed is limited by CPU speed and bus bandwidth.Increase along with processing signals and the real-time of every road signal cannot be guaranteed.
(3) centralized large-screen control system adopts dummycable or repeatedly analog-digital conversion mode to transmit, and its signal easily incurs loss or disturbs, and therefore image quality is poor.
(4) centralized large-screen control system adopts cable point to point connect signal source and controller, needs to need controller of automatic measurement, matrix and cable laying according to user.If the quantity of access signal changes, be difficult to adapt to, therefore, the extensibility of this system is poor.
(5) all signals of centralized large-screen control system focus on by controller, once controller breaks down or the machine of delaying will cause whole large-size screen monitors curtain wall normally to show.
For this reason, in order to solve the above-mentioned defect that centralized large-screen control system exists, the solution of distributed large-screen control system in correlation technique, is proposed.Distributed large-screen control system refers to that vision signal by coded treatment (such as: H.264) be sent to display terminal via network, thus solve the problem that centralized large-screen control system cannot use long distance video line, simultaneously can also by increasing arbitrarily module to improve the scale of television splicing wall.Because vision signal is transmitted by network, therefore, each network node can be separately positioned on different regions, and its scale can expand unlimitedly, efficiently solves the defect that centralized large-screen control system exists in screen control.
Fig. 1 is the configuration diagram of the distributed large-screen control system according to correlation technique.As shown in Figure 1, this distributed large-screen control system mainly comprises following three parts:
(1) front end input equipment, such as: computer input source, analog video camera, web camera (IP CAMERA, referred to as IPC), digital video recorder (Digital Video Recorder, referred to as DVR), primary responsibility provides the original image of large-screen splicing;
(2) embedded device, such as: bayonet nut connector (Bayonet Nut Connector, referred to as BNC) video processor, three primary colors (RGB) video processor, code stream processor and video-stream processor, mainly complete cutting coding and the display of image;
(3) server program, is mainly used in management and controls front end input and the corresponding operation of embedded device execution.
Communicated by network between modules, user uses distributed AC servo system client to carry out splicing and the display of image.Due to the front end of distributed large-screen control system input, embedded device and server be all that dispersion is placed, but not be integrated in a total system, one road image through cutting coding after by network destined to different video-stream processors, the process that each cutting cube carries out decoding display on video-stream processor can regard incoherent mutually as, so how to realize simultaneous display just become distributed large-screen control system technical barrier urgently to be resolved hurrily.
The method that existing distributed large-screen control system adopts usually is first to be sent by 99% in code stream complete for cutting, is then sent by the code stream of residue 1% by sending totally at the code stream of above-mentioned 99% again.The data volume comprised in code stream due to last 1% is very little, and after each display end receives the last data sent, display immediately can realize synchronous.But, the cutting cube number of technique scheme in distributed large-screen is easy to realize simultaneous display less, such as, but after cutting cube number increases: the cutting cube number in distributed large-screen is 64 pieces, the performance of its simultaneous display will be had a strong impact on.Because each frame of 64 road images also needs to wait for the data that could send residue 1% after remaining block also needs the data of 99% to be sent after sending the data of 99%, not only affect the performance of distributed large-screen control system thus, and time delay also more can increase.Therefore, distributed large-screen control system can be subject to many-sided impacts such as equipment performance, environment for use and network condition.
Summary of the invention
The invention provides a kind of processing method and system of video data, with at least solve the cutting screen block number of distributed large-screen control system on television splicing wall in correlation technique more time, the problem that the effect of simultaneous display is poor.
According to an aspect of the present invention, a kind of processing method of video data is provided.
Processing method according to video data of the present invention comprises: video processor receives the video data stream coming from one or more input equipment; Video processor carries out partition encoding process according to the one or more video-stream processors be connected with this video processor to video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, wherein, each packet synchronisation after partition encoding process is presented at television splicing wall for making one or more video-stream processor by calibration markers, this calibration markers is when video processor carries out partition encoding process to video data stream, carries out calibrating rear acquisition according to the current time index of server; Video processor is by the extremely one or more video-stream processor of the Packet Generation after partition encoding process.
Preferably, video processor carries out calibration according to the current time index of server and comprises: video processor calculates the markers side-play amount of self markers and server current time index every predetermined period; Video processor carries out calibration process according to markers side-play amount, obtains calibration markers.
Preferably, the markers side-play amount that video processor calculates self markers and server current time index comprises: the first processor in video processor sends calibration request message to server, and records the first markers when sending calibration request message; Server being recorded the second markers, then being sent adjustments responsive message to first processor when receiving calibration request message, wherein, the information of carrying in adjustments responsive message comprises: the 3rd markers that the second markers and server are recorded when sending adjustments responsive message; First processor records the 4th markers when receiving adjustments responsive message; First processor calculates markers side-play amount according to the first markers, the second markers, the 3rd markers and the 4th markers.
Preferably, video processor carries out calibration process according to markers side-play amount, obtains calibration markers and comprises: first processor is according to self markers of markers side-play amount adjustment; The second processor in video processor receive self markers after coming from the adjustment of first processor and self after calculating first processor transmission adjustment time target propagation delay time; Second processor adopts self markers after adjustment and propagation delay time to calculate calibration markers.
Preferably, the second processor carries out markers calibration every preset duration and server.
Preferably, after video processor is by the Packet Generation after partition encoding process to one or more video-stream processor, also comprise: each video-stream processor is via the packet of port accepts after partition encoding process of the video processor corresponding with this video-stream processor; Each video-stream processor carries out decoding process to the packet received, and parses calibration markers; The markers of the video data exported through decoding process determined by each video-stream processor according to calibration markers.
According to a further aspect in the invention, a kind for the treatment of system of video data is provided.
Treatment system according to video data of the present invention comprises: video processor; Video processor comprises: the first receiver module, for receiving the video data stream coming from one or more input equipment; Processing module, for carrying out partition encoding process according to the one or more video-stream processors be connected with this video processor to video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, wherein, each packet synchronisation after partition encoding process is presented at television splicing wall for making one or more video-stream processor by calibration markers, this calibration markers is when video processor carries out partition encoding process to video data stream, carries out calibrating rear acquisition according to the current time index of server; Sending module, for by the Packet Generation after partition encoding process to one or more video-stream processor.
Preferably, processing module comprises: the first processing unit; First processing unit comprises: send subelement, for sending calibration request message to server, and records the first markers when sending calibration request message; First receives subelement, for receiving the adjustments responsive message coming from server, wherein, the information of carrying in adjustments responsive message comprises: the second markers that server is recorded when receiving calibration request message and the 3rd markers that server is recorded when sending adjustments responsive message; First computation subunit, for calculating markers side-play amount according to the 4th markers, the first markers, the second markers and the 3rd markers recorded when receiving adjustments responsive message.
Preferably, the first processing unit also comprises: adjustment subelement, for adjusting self markers according to markers side-play amount; Processing module also comprises: the second processing unit; Second processing unit comprises: second receive subelement, for receive come from the first processing unit adjustment after self markers; Second computation subunit, for calculate after the first processing unit transmission adjustment self time target propagation delay time; 3rd computation subunit, calculates calibration markers for adopting self markers after adjustment and propagation delay time.
Preferably, said system also comprises: one or more video-stream processor; Each video-stream processor includes: the second receiver module, for the packet of port accepts after partition encoding process via the video processor corresponding with this video-stream processor; Decoder module, for carrying out decoding process to the packet received, and parses calibration markers; Determination module, for determining according to calibration markers the markers exporting the video data processed through decoding.
By the present invention, video processor is adopted to receive the video data stream coming from one or more input equipment; Video processor carries out partition encoding process according to the one or more video-stream processors be connected with this video processor to video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, each packet synchronisation after partition encoding process is presented at television splicing wall for making one or more video-stream processor by this calibration markers, this calibration markers is when video processor carries out partition encoding process to video data stream, carries out calibrating rear acquisition according to the current time index of server; Video processor is by the extremely one or more video-stream processor of the Packet Generation after partition encoding process, solve the cutting screen block number of distributed large-screen control system on television splicing wall in correlation technique more time, the problem that the effect of simultaneous display is poor, and then improve the cutting screen block number of distributed large-screen control system on television splicing wall more, the accuracy of simultaneous display, promotes Consumer's Experience.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the configuration diagram of the distributed large-screen control system according to correlation technique;
Fig. 2 is the flow chart of the processing method of video data according to the embodiment of the present invention;
Fig. 3 is the reciprocal process schematic diagram that server is synchronous with individual equipment markers according to the preferred embodiment of the invention;
Fig. 4 is the schematic diagram of video image split screen simultaneous display according to the preferred embodiment of the invention;
Fig. 5 is that video-stream processor carries out the schematic diagram of video image decoding output procedure according to the preferred embodiment of the invention;
Fig. 6 is the structured flowchart of the treatment system of video data according to the embodiment of the present invention;
Fig. 7 is the structured flowchart of the treatment system of video data according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
In the following description, except as otherwise noted, the symbol otherwise with reference to the action performed by one or more computer and operation represents each embodiment describing the application.Wherein, computer comprises the various products such as personal computer, server, mobile terminal, employs the equipment that CPU, single-chip microcomputer, DSP etc. have a process chip and all can be called computer.Thus, be appreciated that processing unit that this kind of action performed sometimes referred to as computer and operation comprise computer is to the manipulation of the signal of telecommunication representing data with structured form.It is safeguarded in this manipulation transforms data or the position in the accumulator system of computer, and this reshuffles or changes the operation of computer in the mode that those skilled in the art understands.The data structure of service data is the physical location of the memory of the particular community that the form with data defines.But although describe the present invention in above-mentioned context, it does not also mean that restrictive, as understood by those skilled in the art, hereinafter described action and each side of operation also can realize with hardware.
Turn to accompanying drawing, wherein identical reference number refers to identical element, and the principle of the application is shown in a suitable computing environment and realizes.Below describe the embodiment based on described the application, and should not think about the alternative embodiment clearly do not described herein and limit the application.
Following examples can be applied in computer, such as: be applied in PC.Also can be applied in the mobile terminal that have employed at present in intelligent operating system, and be not limited to this.Operating system for computer or mobile terminal does not have particular/special requirement, as long as can detect contact, determine whether this contact is consistent with pre-defined rule, and realizes corresponding function according to the attribute of this contact.
Fig. 2 is the flow chart of the processing method of video data according to the embodiment of the present invention.As shown in Figure 2, the method can comprise following treatment step:
Step S202: video processor receives the video data stream coming from one or more input equipment;
Step S204: video processor carries out partition encoding process according to the one or more video-stream processors be connected with this video processor to video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, wherein, each packet synchronisation after partition encoding process is presented at television splicing wall for making one or more video-stream processor by calibration markers, this calibration markers is when video processor carries out partition encoding process to video data stream, carries out calibrating rear acquisition according to the current time index of server;
Step S206: video processor is by the extremely one or more video-stream processor of the Packet Generation after partition encoding process.
In correlation technique, adopt distributed large-screen control system that every road signal can be made to pass through independently processor and processed, a large amount of computings of whole system are dispersed in each processor; Adopt network as the interchange channel of Signal transmissions, each processor is only responsible for a road signal, and certain processor fault can not affect the normal work of other processor simultaneously; Can support access and the display translation of any multiple signals in addition, whole signal utilizes Internet Transmission, exchange and connection, and the signal source of all this networks of access can show on combination, and system architecture is flexible, and extensibility is strong.But, when the cutting screen block number of distributed large-screen control system in correlation technique on television splicing wall is more, the effect of simultaneous display is poor, adopts method as shown in Figure 2, and video processor receives the video data stream coming from one or more input equipment; Video processor carries out partition encoding process according to the one or more video-stream processors be connected with this video processor to video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, each packet synchronisation after partition encoding process is presented at television splicing wall for making one or more video-stream processor by this calibration markers, this calibration markers is when video processor carries out partition encoding process to video data stream, carries out calibrating rear acquisition according to the current time index of server; Video processor is by the extremely one or more video-stream processor of the Packet Generation after partition encoding process, solve the cutting screen block number of distributed large-screen control system on television splicing wall in correlation technique more time, the problem that the effect of simultaneous display is poor, and then improve the cutting screen block number of distributed large-screen control system on television splicing wall more, the accuracy of simultaneous display, promotes Consumer's Experience.
The processing method of the video data adopting the present embodiment to provide, each video processor in system is under the unified command scheduling of distributed AC servo system client, following major function (following partial function is that some preferred implementation has) can be completed: IP based network exchanges connection flexibly, support random scale combination display and control, break through viewing area boundary, polytype window video signal all can arbitrarily across screen, roaming, convergent-divergent, superposition in full frame scope; Video signal source that can be dissimilar according to network exchange scale access multichannel, supports the display and control of random scale large screen television combination; Can real-time activity form in arbitrary unit screen, all forms can superpose arbitrarily; Supporting signal multicast functionality, same signal source can be simultaneously displayed on any number of display unit screen, and all forms are all real-time, synchronous; Every road signal can be monitored in real time, supports all windowed signal echo on control software design interface; Graphic user interface intuitively, supports remote network control, supports large-screen partition management, supports that many people control large-screen simultaneously, dispatch and manage, and supports multiple management delineation of power; All processor softwares upgrade by network, can carry out the upgrading of performance and function easily, do not need to carry out secondary development to expanded application, reduce system extension expense; Distributed computing architecture, fault-tolerant ability is strong, performance height is reliable, arbitrary processor fault only affects this road signal or unit screen display is shown, and do not affect the normal work of other processor, replacing processor also can not affect network and normally run, and can be shown by a certain road signal switching neatly, be conducive to the emergent display of whole large screen system to other passages.
In a preferred embodiment, a television splicing wall can be divided into multiple sub-combination, and be that every sub-combination arranges corresponding video-stream processor, the number of the unit screen that every individual sub-combination comprises should be no more than the quantity of the largest unit screen that single video-stream processor can process.After setting corresponding video-stream processor respectively for every sub-combination, every sub-combination video and/or audio data of corresponding part picture in whole television splicing wall are responsible for process by the video-stream processor that this sub-combination is corresponding.As a kind of preferred implementation of the present invention, in order to maximally utilise the data-handling capacity of each video-stream processor, according to the quantity of the largest unit screen that each video-stream processor can process, can preset and the video-stream processor combination of multiple acquiescence one to one, then the split screen compound mode that the split screen compound mode comprised according to television splicing wall comprises with the sub-combination of acquiescence, is divided into the combination that several give tacit consent to sub-combination by television splicing wall.The maximum split screen number of each video-stream processor process is determined by the data-handling capacity of himself, the data-handling capacity of single video-stream processor is stronger, the quantity of the largest unit screen of its process is more, and the quantity that the unit that namely the sub-combination of the acquiescence of its correspondence comprises shields is more.As can be seen here, quantity according to the maximum processing unit screen of each video-stream processor divides the sub-combination of acquiescence, then utilize the sub-combination of acquiescence to be combined into complete television splicing wall, just can make full use of the maximum data disposal ability of each video-stream processor, reduce the waste of processor resource.
Preferably, above-mentioned video processor carries out calibration according to the current time index of server and can comprise following operation:
Step S1: video processor calculates the markers side-play amount of self markers and server current time index every predetermined period;
Step S2: video processor carries out calibration process according to markers side-play amount, obtains calibration markers.
In a preferred embodiment, can open on the server of distributed large-screen control system one time calibration service routine, markers current for this equipment is calibrated to synchronous with the markers of server by network by each distributed apparatus.
It should be noted that, although distributed large-screen control system mainly comprises front end input equipment, embedded device and server, the stationary problem between individual equipment and server can be decomposed about simultaneous display problem.
Realizing display synchronously only needs the markers markers of all devices be calibrated to the personal computer at server place (personal computer, referred to as PC) to be consistent.And the PC at server place only needs the timer of enough accuracy can be provided to meet the demands, for this reason, as a preferred embodiment of the present invention, the QueryPerformanceFrequency/QueryPerformanceCounter group of functions of windows can be used can to meet other clocking requirement of Millisecond completely.By adopting technical scheme provided by the present invention, it is advantageous that the concrete scale without the need to considering large screen system, and synchronous during school whether with server when only needing to pay close attention to the school of individual equipment.
Preferably, in step sl, the markers side-play amount of video processor self markers of calculating and server current time index can comprise the following steps:
Step S11: the first processor in video processor sends calibration request message to server, and record the first markers when sending calibration request message;
Step S12: server records the second markers when receiving calibration request message, then adjustments responsive message is sent to first processor, wherein, the information that this adjustments responsive message is carried comprises: the 3rd markers that the second markers and server are recorded when sending adjustments responsive message;
Step S13: first processor record when receiving adjustments responsive message the 4th markers,
Step S14: first processor calculates markers side-play amount according to the first markers, the second markers, the 3rd markers and the 4th markers.
In a preferred embodiment, each video processor in system all can adopt dual core processor, arm processor (being equivalent to the first processor mentioned in the present embodiment) stable performance, powerful.Digital signal processor (Digital Signal Processor, referred to as DSP) (being equivalent to the second processor mentioned in embodiment below) is a kind of digital signal processing chip, and the feature of Digital Signal Processing is just that its processing speed is exceedingly fast.Do primary processor and under adopting DSP to do the Duo-Core Architecture of coprocessor at employing ARM, the system that a highly stable and processing speed is exceedingly fast can be built.
In a preferred embodiment, the markers side-play amount between the markers of server and the markers of individual equipment can be measured.In order to improve accuracy, individual equipment needs to measure the propagation delay between server and individual equipment, to calculate the markers side-play amount between server.
Fig. 3 is the reciprocal process schematic diagram that server is synchronous with individual equipment markers according to the preferred embodiment of the invention.As shown in Figure 3, this reciprocal process is as follows:
In the T1 moment, arm processor sends UDP message bag to server, wherein, carries self current markers T1 in this UDP message bag;
In the T2 moment, server receives above-mentioned UDP message bag and carries out record to reception packet markers T2 this moment;
In the T3 moment, server is by the markers T2 of self record, and the markers T3 sending UDP message bag and the markers T1 carried in the UDP message bag of ARM transmission all feeds back to arm processor;
In the T4 moment, arm processor record markers T4 now, and namely can calculate current server markers T5 according to the markers T1 of server feedback, T2, T3 and T4;
In the preferred embodiment, suppose that the markers deviation between individual equipment and server is X, between individual equipment and server, the network transfer delay of one way is Y, can draw thus:
T2=(T1+X)+Y ... formula 1
T4=(T3-X)+Y ... formula 2
As can be seen here, the value of X, Y is only relevant with the difference of T2 and T1 and the difference of T4 and T3, and has nothing to do with the difference of T3 and T2, and the markers deviation X namely between individual equipment and server and the time required for server process UDP message bag have nothing to do.Accordingly, namely individual equipment calculates markers deviation X by above-mentioned markers T1, T2, T3 and T4, to adjust local markers.
Therefore, can draw according to above-mentioned formula 1 and formula 2:
X=[(T2-T1)-(T4-T3)]/2, i.e. above-mentioned markers side-play amount.
In preferred implementation process, first processor sends User Datagram Protoco (UDP) packet to server, wherein, carries calibration request message in this User Datagram Protoco (UDP) packet.
In a preferred embodiment, in order to reduce network delay, so when whole school in process, use User Datagram Protoco (UDP) (User Datagram Protocol, referred to as UDP) packet, and non-usage transmission control protocol (Transmission Control Protocol, referred to as TCP) packet realizes.When server needs the school of a unlatching udp port, service thread is to realize all synchronizing processes.
Preferably, in step s 2, video processor carries out calibration process according to markers side-play amount, obtains calibration markers and can comprise following treatment step:
Step S21: first processor is according to self markers of markers side-play amount adjustment;
Step S22: the second processor in video processor receive self markers after coming from the adjustment of first processor and self after calculating first processor transmission adjustment time target propagation delay time;
Step S23: the second processor adopts self markers after adjustment and propagation delay time to calculate calibration markers.
In a preferred embodiment, as shown in Figure 3, according to the markers offset X calculated, can calibrate local markers, and then ask for markers T5, be i.e. T5=T4+X=[(T2-T1)+(T4+T3)]/2; Last in the T5 moment, the server markers T5 calculated is sent to DSP by arm processor, increases the time delay sending order in addition and can obtain server markers T6 accurately.
It should be noted that, above-mentioned markers T1-T6 is all accurate to millisecond.
In preferred implementation process, above-mentioned second processor carries out markers calibration every preset duration and server.
State in realization in synchronizing process and can also note following 2 points:
The reason of service mode during server unlatching school is adopted to be to reduce the burden of server, namely one or more input equipment is adopted initiatively to initiate markers calibration request to server, and send markers calibration request without the need to server active poll to each input equipment, thus decrease the burden of server;
Because the clock module on the clock module of DSP inside and server place PC exists error, therefore, every preset duration, equipment just need again with server time-revise once, such as: every 5 minutes equipment just need again with server time-revise once.
Preferably, in step S206, video processor, by after the Packet Generation after partition encoding process to one or more video-stream processor, can also comprise following operation:
Step S3: each video-stream processor is via the packet of port accepts after partition encoding process of the video processor corresponding with this video-stream processor;
Step S4: each video-stream processor carries out decoding process to the packet received, and parses calibration markers;
Step S5: the markers of the video data exported through decoding process determined by each video-stream processor according to calibration markers.
In a preferred embodiment, video processor can include but not limited to following one of at least: RGB processor, BNC processor, code stream processor.The viewing area of display module is divided at least two split screens in order to instruction by span mode, span mode specifically can comprise left and right 2 panes, up and down 2 panes, 3 panes, four split screens, six split screens and eight split screens etc., can need to pre-set the span mode can selected for user according to display.Determine the video flowing that each split screen is corresponding, the video source that each split screen is corresponding is identical, namely this video flowing all by camera module Real-time Collection to.
Fig. 4 is the schematic diagram of video image split screen simultaneous display according to the preferred embodiment of the invention.As shown in Figure 4, piece image can be cut into polylith (such as: 4 pieces) by video processor, namely form segmentation image P1, segmentation image P2, segmentation image P3 and segmentation image P4, mail to video-stream processor 1, video-stream processor 2, video-stream processor 3 and video-stream processor 4 respectively.If realize the simultaneous display splitting image, then need the markers of the equipment be all registered on server and the markers of server to be consistent; And video processor needs the complete markers of calibration to be increased in the middle of the private information of code stream when carrying out coded treatment cutting image; In addition, video-stream processor adds one section of time delay output image again after can also extracting markers from private information.
Video processor can comprise: N number of output port, and partitioning video data can be become the laggard line output in N road by this video processor, and its N number of output port is connected with N number of video-stream processor, and wherein, an output port correspondence connects a display; And N number of video-stream processor is connected with N number of output port of video processor respectively, wherein, an output port of a display correspondence connection video processor.Above-mentioned N number of video-stream processor, according to the split screen number M that television splicing wall presets, is displayed in full screen video data, and wherein, when N is the positive integer being greater than or equal to 2, the value of M is identical with N; And when N value is 1, the value of M be greater than or equal to 2 positive integer.
With the resolution of inputted video image for 1024 × 768, television splicing wall is spliced into example according to 2 × 2, the signal pixels point of unit screen segmentation is as follows respectively: upper left corner unit shields, transverse axis segmentation valid pixel point range is 0 pixel-512 pixel, and longitudinal axis segmentation valid pixel point range is 0 pixel-384 pixel; Upper right corner unit screen, transverse axis segmentation valid pixel point range is 513 pixel-1024 pixels, and longitudinal axis segmentation valid pixel point range is 0 pixel-384 pixel; Lower left corner unit screen, transverse axis segmentation valid pixel point range is 0 pixel-512 pixel, and longitudinal axis segmentation valid pixel point range is 385 pixel-768 pixels; Lower right corner unit screen, transverse axis segmentation valid pixel point range is 513 pixel-1024 pixels, and longitudinal axis segmentation valid pixel point range is 385 pixel-768 pixels.
And for the signal that non-integer ratio is split, preferentially can get a pixel signal to split more, guarantee that former figure effective pixel points can not be lost with this, with the resolution of inputted video image for 1024 × 768, television splicing wall is spliced into example according to 3 × 3, the signal pixels point of unit screen segmentation is as follows respectively: upper left side unit shields, and transverse axis segmentation valid pixel point range is 0 pixel-342 pixel, and longitudinal axis segmentation valid pixel point range is 0 pixel-256 pixel; Directly over unit screen, transverse axis segmentation valid pixel point range is 341 pixel-683 pixels, and longitudinal axis segmentation valid pixel point range is 0 pixel-256 pixel; Upper right side unit screen, transverse axis segmentation valid pixel point range is 682 pixel-1024 pixels, and longitudinal axis segmentation valid pixel point range is 0 pixel-256 pixel; Front-left unit shields, and transverse axis segmentation valid pixel point range is 0 pixel-342 pixel, and longitudinal axis segmentation valid pixel point range is 257 pixel-512 pixels; Centre unit shields, and transverse axis segmentation valid pixel point range is 341 pixel-683 pixels, and longitudinal axis segmentation valid pixel point range is 257 pixel-512 pixels; Front-right unit shields, and transverse axis segmentation valid pixel point range is 682 pixel-1024 pixels, and longitudinal axis segmentation valid pixel point range is 257 pixel-512 pixels; Lower left unit screen, transverse axis segmentation valid pixel point range is 0 pixel-342 pixel, and longitudinal axis segmentation valid pixel point range is 513 pixel-768 pixels; Immediately below unit screen, transverse axis segmentation valid pixel point range is 341 pixel-683 pixels, and longitudinal axis segmentation valid pixel point range is 513 pixel-768 pixels; Lower right unit screen, transverse axis segmentation valid pixel point range is 682 pixel-1024 pixels, and longitudinal axis segmentation valid pixel point range is 513 pixel-768 pixels.
As another preferred embodiment of the present invention, Fig. 5 is that video-stream processor carries out the schematic diagram of video image decoding output procedure according to the preferred embodiment of the invention.As shown in Figure 5, get accurately after server markers at DSP, the timing module of self can be used to manage the correction markers got.
T1: can the server markers of the correction got is encapsulated in the privately owned field of UDP message bag when video processor cutting coding;
△ T: the time of delay preset, when arranging this time period, needs to guarantee that code stream can be shown the complete reception of processor and accurately decode;
T2: video-stream processor is resolved the UDP message bag encapsulated in code stream and obtained the accurate markers of this code stream in the coding moment, obtains the markers of output image accurately after then calculating with △ T.
Due to same image cut after encode time, all carry the markers in present encoding moment, therefore, even if different video-stream processors carries out decoding display, the markers of the same two field picture obtained is all duplicate, as long as can guarantee to be consistent during all devices school to server, extraordinary simultaneous display effect so will be obtained.
In addition, as another preferred embodiment of the present invention, in native system except video processor is set, audio process can also be increased, for in the middle of multimedia data stream, such as: high-resolution multimedia (HDMI) signal, video graphics array (VGA) signal, decode voice data, such as: Sound processing, audio frequency amplify process, thus obtain required voice data; Loud speaker, is connected with audio process, to decode the voice data obtained through audio process for playing.
In preferred implementation process, above-mentioned video processor high-ranking officers mark the private data field be encapsulated in each packet after partition encoding process on time.
Under normal circumstances, MPEG2DSMCC field format can be adopted to store private data, namely can adopt private data table.Such as: the field that can be 0x0D by the stream type of DSMCC is set to DSMCC SECTIONS, wherein, can comprise polytype private data.
Fig. 6 is the structured flowchart of the treatment system of video data according to the embodiment of the present invention.As shown in Figure 6, the treatment system of this video data can comprise: the treatment system according to video data of the present invention comprises: video processor 10; Video processor 10 can comprise: the first receiver module 100, for receiving the video data stream coming from one or more input equipment; Processing module 102, for carrying out partition encoding process according to the one or more video-stream processors be connected with this video processor to video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, wherein, each packet synchronisation after partition encoding process is presented at television splicing wall for making one or more video-stream processor by calibration markers, this calibration markers is when video processor carries out partition encoding process to video data stream, carries out calibrating rear acquisition according to the current time index of server; Sending module 104, for by the Packet Generation after partition encoding process to one or more video-stream processor.
Adopt system as shown in Figure 6, solve the cutting screen block number of distributed large-screen control system on television splicing wall in correlation technique more time, the problem that the effect of simultaneous display is poor, and then improve the cutting screen block number of distributed large-screen control system on television splicing wall more, the accuracy of simultaneous display, promotes Consumer's Experience.
Preferably, processing module 102, also for calculating the markers side-play amount of self markers and server current time index, and carries out calibration process according to markers side-play amount, obtains calibration markers.
Preferably, as shown in Figure 7, processing module 102 can comprise: the first processing unit 1020; First processing unit 1020 can comprise: send subelement (not shown), for sending calibration request message to server, and records the first markers when sending calibration request message; First receives subelement (not shown), for receiving the adjustments responsive message coming from server, wherein, the information of carrying in adjustments responsive message comprises: the second markers that server is recorded when receiving calibration request message and the 3rd markers that server is recorded when sending adjustments responsive message; First computation subunit (not shown), for calculating markers side-play amount according to the 4th markers, the first markers, the second markers and the 3rd markers recorded when receiving adjustments responsive message.
Preferably, first processor sends User Datagram Protoco (UDP) packet to server, wherein, carries calibration request message in User Datagram Protoco (UDP) packet.
Preferably, as shown in Figure 7, the first processing unit 1020 can also comprise: adjustment subelement (not shown), for adjusting self markers according to markers side-play amount; Processing module 102 can also comprise: the second processing unit 1022; Second processing unit 1022 can comprise: second receives subelement (not shown), for receive come from the first processing unit adjustment after self markers; Second computation subunit (not shown), for calculate after the first processing unit transmission adjustment self time target propagation delay time; 3rd computation subunit (not shown), calculates calibration markers for adopting self markers after adjustment and propagation delay time.
Preferably, the second processor carries out markers calibration every preset duration and server.
Preferably, said system also comprises: one or more video-stream processor 20; Each video-stream processor 20 all can comprise: the second receiver module 200, for the packet of port accepts after partition encoding process via the video processor corresponding with this video-stream processor; Decoder module 202, for carrying out decoding process to the packet received, and parses calibration markers; Determination module 204, for determining according to calibration markers the markers exporting the video data processed through decoding.
Preferably, video processor high-ranking officers mark the private data field be encapsulated in each packet after partition encoding process on time.
As can be seen from the above description, following technique effect (it should be noted that these effects are effects that some preferred embodiment can reach) is above embodiments enabled: adopt the mode of software to realize synchronously, without the need to additionally increasing hardware cost; Markers mode is adopted to carry out the synchronous of equipment room; When employing adds in code stream private information, target mode is to realize the simultaneous display of image level.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a processing method for video data, is characterized in that, comprising:
Video processor receives the video data stream coming from one or more input equipment;
Described video processor connects one or more video-stream processor, described video processor carries out partition encoding process according to its connection to described video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, wherein, described each packet synchronisation after partition encoding process is presented at television splicing wall for making described one or more video-stream processor by described calibration markers, this calibration markers is when described video processor carries out partition encoding process to described video data stream, carry out calibrating rear acquisition according to the current time index of server,
Described video processor is by the extremely described one or more video-stream processor of the Packet Generation after partition encoding process.
2. method according to claim 1, is characterized in that, described video processor carries out calibration according to the current time index of server and comprises:
Described video processor calculates the markers side-play amount of self markers and described server current time index every predetermined period;
Described video processor carries out calibration process according to described markers side-play amount, obtains described calibration markers.
3. method according to claim 2, is characterized in that, the described markers side-play amount that described video processor calculates self markers described and described server current time index comprises:
First processor in described video processor sends calibration request message to described server, and records the first markers when sending described calibration request message;
Described server records the second markers when receiving described calibration request message, then adjustments responsive message is sent to described first processor, wherein, the information of carrying in described adjustments responsive message comprises: the 3rd markers that described second markers and described server are recorded when sending described adjustments responsive message;
Described first processor records the 4th markers when receiving described adjustments responsive message;
Described first processor calculates described markers side-play amount according to described first markers, described second markers, described 3rd markers and described 4th markers.
4. method according to claim 3, is characterized in that, described video processor carries out calibration process according to described markers side-play amount, obtains described calibration markers and comprises:
Described first processor is according to described markers side-play amount adjustment self markers described;
The second processor in described video processor receive self markers after coming from the described adjustment of described first processor and calculate that described first processor transmits after described adjustment self time target propagation delay time;
Self markers after described second processor adopts described adjustment and described propagation delay time calculate described calibration markers.
5. method according to claim 4, is characterized in that, described second processor carries out markers calibration every preset duration and described server.
6. method according to claim 1, is characterized in that, after described video processor is by the Packet Generation after partition encoding process to described one or more video-stream processor, also comprises:
Each video-stream processor is via the packet of port accepts after partition encoding process of the video processor corresponding with this video-stream processor;
Described each video-stream processor carries out decoding process to the packet received, and parses described calibration markers;
The markers of the video data exported through decoding process determined by described each video-stream processor according to described calibration markers.
7. a treatment system for video data, is characterized in that, comprising: video processor;
Described video processor comprises:
First receiver module, for receiving the video data stream coming from one or more input equipment;
Processing module, for one or more video-stream processors that basis is connected with this video processor, partition encoding process is carried out to described video data stream, and high-ranking officers mark on time and are encapsulated in each packet after partition encoding process, wherein, described each packet synchronisation after partition encoding process is presented at television splicing wall for making described one or more video-stream processor by described calibration markers, this calibration markers is when described video processor carries out partition encoding process to described video data stream, carry out calibrating rear acquisition according to the current time index of server,
Sending module, for by the Packet Generation after partition encoding process to described one or more video-stream processor.
8. system according to claim 7, is characterized in that, described processing module comprises: the first processing unit;
Described first processing unit comprises:
Sending subelement, for sending calibration request message to described server, and recording the first markers when sending described calibration request message;
First receives subelement, for receiving the adjustments responsive message coming from described server, wherein, the information of carrying in described adjustments responsive message comprises: the second markers that described server is recorded when receiving described calibration request message and the 3rd markers that described server is recorded when sending described adjustments responsive message;
First computation subunit, for calculating described markers side-play amount according to the 4th markers, described first markers, described second markers and described 3rd markers recorded when receiving described adjustments responsive message.
9. system according to claim 8, is characterized in that,
Described first processing unit also comprises:
Adjustment subelement, for self markers according to described markers side-play amount adjustment;
Described processing module also comprises: the second processing unit;
Described second processing unit comprises:
Second receives subelement, for receiving self markers after the described adjustment coming from described first processing unit;
Second computation subunit, for calculate that described first processing unit transmits after described adjustment self time target propagation delay time;
3rd computation subunit, calculates described calibration markers for self markers after adopting described adjustment and described propagation delay time.
10. system according to claim 9, is characterized in that, described system also comprises: described one or more video-stream processor;
Each video-stream processor includes:
Second receiver module, for the packet of port accepts after partition encoding process via the video processor corresponding with this video-stream processor;
Decoder module, for carrying out decoding process to the packet received, and parses described calibration markers;
Determination module, for determining the markers of the video data exported through decoding process according to described calibration markers.
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