CN106941598A - Many picture bit stream synthetic methods, many picture bit streams synthesis control method and device - Google Patents
Many picture bit stream synthetic methods, many picture bit streams synthesis control method and device Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/155—Conference systems involving storage of or access to video conference sessions
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Abstract
The invention provides a kind of many picture bit stream synthetic methods, many picture bit streams synthesis control method and device.Wherein, many picture bit stream synthetic methods include：Call media process and receive media cascade code stream from IMS conference medium process；Calling media process judges whether carry decoded positions and synthesising position in media cascade code stream；In the case where the judgment result is yes, calling media process is using decoding media card decoding media cascade code stream corresponding with decoded positions, and decoded media are cascaded into bit-stream synthesis into many picture bit streams according to synthesising position；Calling media process sends many picture bit streams to the terminal hung under calling media process.By the present invention, solve and lack the problem of many pictures of conference system are controlled that there is provided many menu control methods in a kind of conference system in correlation technique.
Description
Technical field
The present invention relates to the communications field, synthesized in particular to a kind of many picture bit stream synthetic methods, many picture bit streams
Control method and device.
Background technology
With internet and the fast development of cloud computing, cloud video conferencing system has become new trend, video conference
Multipoint control unit (Multipoint Control Unit, referred to as MCU) is had begun to from hardware MCU to soft MCU
Transition.This is also a kind of trend that video conferencing system develops to internet direction.
In cloud video conferencing system, it is also relatively common scene that a meeting, which has multiple terminal accesses,.How from one
Selected in multiple terminals of meeting and constitute many picture bit streams, be then sent to each terminal；And realize follow-up many pictures
Control, not yet provide effective solution at present in the related art.
The content of the invention
The invention provides a kind of many picture bit stream synthetic methods, many picture bit streams synthesis control method and device, with least
The problem of many pictures for lacking conference system in solution correlation technique are controlled.
According to an aspect of the invention, there is provided a kind of many picture bit stream synthetic methods, including：Call media process from
IMS conference medium process receives media cascade code stream；The calling media process judges whether carried in the media cascade code stream
There are decoded positions and synthesising position；In the case where the judgment result is yes, the calling media process is used and the decoding
The corresponding decoding media card in position decodes media cascade code stream, and according to the synthesising position by decoded media
Cascade code stream is synthesized in many picture bit streams；The calling media process sends many picture bit streams to the calling media
The terminal hung under process.
Alternatively, whether carried in the calling media process judges the media cascade code stream decoded positions with
After the synthesising position, methods described also includes：In the case where judged result is no, the calling media process is lost
Abandon the media cascade code stream.
Alternatively, methods described also includes：It is the calling media process that the calling media process, which receives main meeting process,
Media cascade Bit allocation decoded positions and synthesising position；The calling media process receives the calling media process
The video code flow of the terminal of lower extension；Media for the calling media process are cascaded code stream by the calling media process
The decoded positions and synthesising position of distribution are embedded in the video code flow, obtain the media cascade code stream of the calling media process；
The media of the calling media process are cascaded code stream by the IMS conference medium process and are sent to by the calling media process
The calling media process cascaded with the IMS conference medium process.
According to an aspect of the present invention, a kind of many picture bit stream synthesis control methods are additionally provided, including：Main meeting is entered
The decoded positions and synthesising position of the media cascade code stream for the calling media process hung under main meeting process described in thread management, its
In, the decoded positions are used to indicate to be used to decode the decoding media card that the media cascade code stream, the synthesising position
For indicating that the media cascade bit-stream synthesis to the position in many picture bit streams；The main meeting process is by the solution code bit
Put and be sent to the calling media process with the synthesising position.
Alternatively, the media for the calling media process hung under main meeting process described in the main meeting management of process
Cascading the decoded positions and the synthesising position of code stream includes：The main meeting process receives many picture orders；
The broadcast source and/or choosing that the main meeting process is indicated according to many picture orders see source, update the media-level
Join the decoded positions and the synthesising position of code stream.
Alternatively, the broadcast source and/or choosing that the main meeting process is indicated according to many picture orders see source, more
The decoded positions and the synthesising position of the new media cascade code stream include：Described in media cascade code stream
Synthesising position changes, and synthesising position change media cascade code stream neither broadcast source media cascade code stream
Nor in the case that the media cascade code stream in source is seen in choosing, the main meeting process determines the media that synthesising position changes
The decoded positions for cascading code stream are constant；And/or the main meeting process turns into broadcast source according to media cascade code stream
Sequencing, is followed successively by synthesising position described in the media cascade Bit allocation.
Alternatively, the decoded positions and the synthesising position are sent to the calling media process by the main meeting process
Including：The main meeting process judges whether the decoded positions and the synthesising position of the media cascade code stream occur
Change；In the case where the judgment result is yes, the main meeting process sends the decoded positions and the synthesising position
To the calling media process.
According to an aspect of the present invention, a kind of many picture bit stream synthesizers are additionally provided, applied to calling media process,
Including：First receiver module, for receiving media cascade code stream from IMS conference medium process；Judge module, for judging
State in media cascade code stream and whether carry decoded positions and synthesising position；Processing module, for being yes in judged result
In the case of, decode the media using decoding media card corresponding with the decoded positions and cascade code stream, and according to described
Decoded media are cascaded bit-stream synthesis into many picture bit streams by synthesising position；First sending module, it is described for sending
Many picture bit streams are to the terminal hung under the calling media process.
Alternatively, described device also includes：Discard module, in the case of being no in judged result, abandons the matchmaker
Body cascades code stream.
Alternatively, described device also includes：Second receiver module, enters for receiving main meeting process for the calling media
The decoded positions and synthesising position of the media cascade Bit allocation of journey；3rd receiver module, for receiving the calling media
The video code flow for the terminal hung under process；Embedded module, for by for the media concatenated code of the calling media process
The decoded positions and synthesising position for flowing distribution are embedded in the video code flow, obtain the media concatenated code of the calling media process
Stream；Second sending module, sends out for the media of the calling media process to be cascaded into code stream by the IMS conference medium process
Give the calling media process cascaded with the IMS conference medium process.
According to an aspect of the present invention, a kind of many picture bit stream composite control apparatus are additionally provided, are entered applied to main meeting
Journey, including：Management module, the media cascade code stream for the calling media process hung for managing under the main meeting process
Decoded positions and synthesising position, wherein, the decoded positions are used to indicate to be used to decode the decoding that the media cascade code stream
Media card, the synthesising position is used to indicate that the media cascade bit-stream synthesis to the position in many picture bit streams；Send
Module, for the decoded positions and the synthesising position to be sent into the calling media process.
Alternatively, the management module includes：Receiving unit, for receiving many picture orders；Updating block, is used
Source is seen in the broadcast source and/or choosing indicated according to many picture orders, the described of the media cascade code stream is updated
Decoded positions and the synthesising position.
Alternatively, the updating block includes：First updates subelement, the conjunction for cascading code stream in the media
Changed into position, and synthesising position change media cascade code stream neither broadcast source media cascade code stream
In the case of not being the media cascade code stream that source is seen in choosing, the solution code bit for the media cascade code stream that synthesising position changes is determined
Put constant；And/or second update subelement, for according to the media cascade code stream turn into broadcast source sequencing,
It is followed successively by synthesising position described in the media cascade Bit allocation.
Alternatively, the sending module includes：Judging unit, for judging that the media cascade the solution code bit of code stream
Put with whether the synthesising position changes；Transmitting element, in the case where the judgment result is yes, by the solution
Code position and the synthesising position are sent to the calling media process.
By the present invention, media cascade code stream is received from IMS conference medium process using calling media process；Call media process
Judge whether carry decoded positions and synthesising position in media cascade code stream；In the case where the judgment result is yes, call
Media process will be solved using decoding media card decoding media cascade code stream corresponding with decoded positions according to synthesising position
Media after code cascade bit-stream synthesis into many picture bit streams；Calling media process sends many picture bit streams and entered to calling media
The mode for the terminal hung under journey, solves and lacks the problem of many pictures of conference system are controlled that there is provided one in correlation technique
Plant many menu control methods in conference system.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention
Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of many picture bit stream synthetic methods according to embodiments of the present invention；
Fig. 2 is the flow chart that many picture bit streams according to embodiments of the present invention synthesize control method；
Fig. 3 is the structured flowchart of many picture bit stream synthesizers according to embodiments of the present invention；
Fig. 4 is the alternative construction block diagram of many picture bit stream synthesizers according to embodiments of the present invention；
Fig. 5 is the structured flowchart of many picture bit stream composite control apparatus according to embodiments of the present invention；
Fig. 6 is the alternative construction block diagram one of continuous presence control device according to embodiments of the present invention；
Fig. 7 is the alternative construction block diagram two of continuous presence control device according to embodiments of the present invention；
Fig. 8 is the structural representation of the cloud video conferencing system according to alternative embodiment of the present invention；
Fig. 9 is many picture layout schematic diagrames according to alternative embodiment of the present invention；
Figure 10 is the stream that control method is synthesized according to many picture bit streams of the cloud video conferencing system of alternative embodiment of the present invention
Cheng Tu.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted
Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
It should be noted that term " first ", " second " in description and claims of this specification and above-mentioned accompanying drawing
Etc. being for distinguishing similar object, without for describing specific order or precedence.
A kind of many picture bit stream synthetic methods are provided in the present embodiment, and Fig. 1 is many pictures according to embodiments of the present invention
The flow chart of code stream synthesizing method, as shown in figure 1, the flow comprises the following steps：
Step S102, calling media process receives media cascade code stream from IMS conference medium process；
Step S104, calling media process judges whether carry decoded positions and synthesising position in media cascade code stream；
Step S106, in the case where the judgment result is yes, calling media process use decoding corresponding with decoded positions
Media card decoding media cascade code stream, and decoded media are cascaded into bit-stream synthesis to many pictures code according to synthesising position
In stream；
Step S108, calling media process sends many picture bit streams to the terminal hung under calling media process.
By above-mentioned steps, the decoded positions carried in code stream and conjunction are cascaded according to the media received by calling media process
Into position, media cascade code stream is decoded and many picture bit streams are synthesized, many picture bit streams are then sent to calling matchmaker
The terminal hung under body process, thus solve lack in correlation technique the problem of many pictures of conference system are controlled there is provided
A kind of many menu control methods of conference system.Adopt with the aforedescribed process, it is only necessary to safeguard the decoding in media cascade code stream
Position and synthesising position, can be achieved with the control to many pictures.
Wherein, when whether carrying decoded positions and synthesising position in judging media cascade code stream, there is a kind of situation is：
Decoded positions and synthesising position are carried in media cascade code stream, but are due to update mistake or other reasonses, cause solution
The value of code position and synthesising position is invalid value.Such case is considered as by calling media process not to be taken in media cascade code stream
Band decoded positions and synthesising position.
Alternatively, after decoded positions and synthesising position whether are carried during calling media process judges media cascade code stream,
In the case where judged result is no, calling media process abandons media cascade code stream.In this way, can be direct
The media cascade code stream for not carrying decoded positions and synthesising position is abandoned, the processing load of calling media process is alleviated.And
And for calling media process, calling media process need not can again judge whether the media concatenated code to receiving
Other calling media process forwardings of flow direction cascade, and only need to forward all media cascade code streams,
Reduce the processing complexity of calling media process.
Alternatively, in the above-mentioned methods, the decoded positions and synthesising position in media cascade code stream can pass through following side
Formula is embedded in：Call media process and receive the decoded positions that main meeting process cascades Bit allocation for the media of calling media process
And synthesising position；Calling media process receives the video code flow for the terminal hung under calling media process；Calling media process will
To call the decoded positions and synthesising position insertion video code flow that the media of media process cascade Bit allocation, obtain calling matchmaker
The media cascade code stream of body process；Call the media concatenated code that media process will call media process by IMS conference medium process
Stream is sent to the calling media process cascaded with meeting media process.In this way, calling media process can be received
The media cascade code stream sent to the calling media process that the IMS conference medium process being attached thereto mutually is cascaded, and receive
Media cascade code stream can carry corresponding decoded positions and synthesising position.
It should be noted that can all carry decoded positions and synthesising position in not all media cascade code stream；It is right
The media for not distributing decoded positions and synthesising position in main meeting process cascade code stream, then will not in media cascade code stream
Carry decoded positions and the information of synthesising position；Calling media process receive come self terminal, be not previously allocated decoding
Position and synthesising position media cascade code stream when, can directly forward the media cascade code stream, can also according to configuration,
Directly abandon media cascade code stream.
A kind of many picture bit stream synthesis control methods are additionally provided in the present embodiment.Fig. 2 is according to embodiments of the present invention
Many picture bit streams synthesize the flow chart of control method, as shown in Fig. 2 the flow comprises the following steps：
The media for the calling media process hung under step S202, the main main meeting process of meeting management of process cascade the solution of code stream
Code position and synthesising position, wherein, decoded positions are used to indicate to be used to decode the decoding media card that media cascade code stream,
Synthesising position is used to indicate that media cascade bit-stream synthesis to the position in many picture bit streams；
Decoded positions and synthesising position are sent to calling media process by step S204, main meeting process.
By above-mentioned steps, the decoded positions and synthesising position of code stream are cascaded by main meeting process maintenance management media, and will
Decoded positions and synthesising position are sent to corresponding calling media process；Calling media process can use the decoding being assigned to
Position and synthesising position, to being handled to IMS conference medium process and the media cascade code stream of terminal forwarding.For example, object
The media cascade code stream of IMS conference medium process forwarding adds corresponding decoded positions and synthesising position, the matchmaker of object terminal forwarding
The decoded positions and synthesising position that body cascade code stream cascades code stream carrying using the media are decoded and synthesis processing.Pass through
The above method, solves and lacks the problem of many pictures of conference system are controlled that there is provided a kind of conference system in correlation technique
Many menu control methods.
Alternatively, the media for the calling media process hung under the main meeting process of main meeting management of process cascade the solution code bit of code stream
Put includes with synthesising position：Main meeting process receives many picture orders；Main meeting process is according to many picture orders
Source is seen in the broadcast source of instruction and/or choosing, updates the decoded positions and synthesising position of media cascade code stream.Many picture controls refer to
Order can be that user passes through terminal and sent to main meeting process.
Alternatively, the broadcast source and/or choosing that main meeting process is indicated according to many picture orders see source, update media-level
When joining decoded positions and the synthesising position of code stream：The synthesising position for cascading code stream in media is changed, and synthesising position is sent out
The media cascade code stream of changing is neither the media cascade code stream of broadcast source is nor the media cascade code stream in source is seen in choosing
In the case of, main meeting process determines that the decoded positions for the media cascade code stream that synthesising position changes are constant.Pass through the party
Formula, can cause non-broadcasting source and non-choosing sees that the decoding media card that the media cascade code stream in source is used is relatively fixed；
In the case where decoded positions and decoding media card are one-to-one corresponding, the change of decoded positions will cause old decoding matchmaker
The deletion of body plug-in unit and the foundation of new decoding media card；By keeping the decoded positions of media cascade code stream constant as far as possible
Mode, it is possible to reduce decoding media card deletion and newly-built caused resource consumption.
In addition, broadcast source and/or choosing that main meeting process is indicated according to many picture orders see source, media cascade is updated
When the decoded positions and synthesising position of code stream：Main meeting process cascades code stream according to media turns into the sequencing of broadcast source,
It is followed successively by media cascade Bit allocation synthesising position.In general, the newest media for being referred to as broadcast source cascade the synthesis of code stream
Position is most forward, and whenever having new media cascade code stream to be referred to as new broadcast source, upper one turns into the media of broadcast source
The synthesising position for cascading code stream then moves a position afterwards, so that the newest media cascade code stream as broadcast source is always located
In on most forward synthesising position.In the case where synthesising position is limited, more first the media as broadcast source cascade code stream
Synthesising position may be deleted, after synthesising position is deleted, and media cascade code stream is no longer participate in the conjunction of many picture bit streams
Into in many pictures that will not be then displayed at many picture bit stream formation.
Alternatively, when decoded positions and synthesising position are sent to calling media process by main meeting process：Main meeting process can
Whether changed with the decoded positions and synthesising position that judge media cascade code stream；In the case where the judgment result is yes,
Decoded positions and synthesising position are sent to calling media process by main meeting process.Otherwise, main meeting process need not be to exhaling
Media process is made to send decoded positions and synthesising position.In this way, reduce main meeting process and calling media enter
Information exchange between journey, has saved the communication resource.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-described embodiment
Method the mode of required general hardware platform can be added to realize by software, naturally it is also possible to by hardware, but a lot
In the case of the former be more preferably embodiment.Understood based on such, technical scheme is substantially in other words to existing
The part for having technology to contribute can be embodied in the form of software product, and the computer software product is stored in one
In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions are make it that a station terminal equipment (can
To be mobile phone, computer, server, or network equipment etc.) method that performs each embodiment of the invention.
A kind of many picture bit stream synthesizers are additionally provided in the present embodiment, and applied to calling media process, the device is used
In realizing above-described embodiment and preferred embodiment, repeating no more for explanation had been carried out.As used below, art
Language " module " can realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples
Preferably realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.
Fig. 3 is the structured flowchart of many picture bit stream synthesizers according to embodiments of the present invention, as shown in figure 3, the device
Including：First receiver module 32, judge module 34, the sending module 38 of processing module 36 and first, wherein,
First receiver module 32, for receiving media cascade code stream from IMS conference medium process；Judge module 34, is coupled to
First receiver module 32, for judging whether carry decoded positions and synthesising position in media cascade code stream；Processing module
36, coupled to judge module 34, in the case of being in the judged result of judge module 34, using with solving code bit
Corresponding decoding media card decoding media cascade code stream is put, and closes decoded media cascade code stream according to synthesising position
Into into many picture bit streams；First sending module 38, coupled to processing module 36, for sending many picture bit streams to exhaling
It is the terminal hung under media process.
Fig. 4 is the alternative construction block diagram of many picture bit stream synthesizers according to embodiments of the present invention, as shown in figure 4, can
Selection of land, device also includes：Discard module 42, coupled to judge module 34, for the judged result in judge module 34
In the case of no, media cascade code stream is abandoned.
Alternatively, device also includes：Second receiver module, for receiving media of the main meeting process for calling media process
Cascade the decoded positions and synthesising position of Bit allocation；3rd receiver module, for receiving the end hung under calling media process
The video code flow at end；Embedded module, coupled to the 3rd receiver module and the second receiver module, for that will enter for calling media
The decoded positions and synthesising position insertion video code flow of the media cascade Bit allocation of journey, obtain calling the media of media process
Cascade code stream；Second sending module, coupled to embedded module, for by IMS conference medium process media process will to be called
Media cascade code stream is sent to the calling media process cascaded with meeting media process.
A kind of many picture bit stream composite control apparatus are additionally provided in the present embodiment, applied to main meeting process, the device
For realizing above-described embodiment and preferred embodiment, repeating no more for explanation had been carried out.As used below,
Term " module " can realize the combination of the software and/or hardware of predetermined function.Although the dress described by following examples
Put and preferably realized with software, but hardware, or the realization of the combination of software and hardware is also that may and be contemplated.
Fig. 5 is the structured flowchart of many picture bit stream composite control apparatus according to embodiments of the present invention, as shown in figure 5, should
Device includes：Management module 52 and sending module 54, wherein,
Management module 52, the media for the calling media process hung for managing under main meeting process cascade the decoded positions of code stream
And synthesising position, wherein, decoded positions are used to indicate to be used to decode the decoding media card that media cascade code stream, synthesize position
Put for indicating that media cascade bit-stream synthesis to the position in many picture bit streams；Sending module 54, coupled to management module
52, for decoded positions and synthesising position to be sent into calling media process.
Fig. 6 is the alternative construction block diagram one of continuous presence control device according to embodiments of the present invention, as shown in fig. 6,
Alternatively, management module 52 includes：Receiving unit 522, for receiving many picture orders；Updating block 524,
Coupled to receiving unit 522, broadcast source and/or choosing for being indicated according to many picture orders see source, update media-level
Join the decoded positions and synthesising position of code stream.
Alternatively, updating block 524 includes：First updates subelement, the synthesising position hair for cascading code stream in media
Changing, and synthesising position change media cascade code stream neither broadcast source media cascade code stream nor choosing see
In the case of the media cascade code stream in source, determine that the decoded positions for the media cascade code stream that synthesising position changes are constant；
And/or second update subelement, for according to media cascade code stream turn into broadcast source sequencing, be followed successively by media-level
Join Bit allocation synthesising position.
Fig. 7 is the alternative construction block diagram two of continuous presence control device according to embodiments of the present invention, as shown in fig. 7,
Alternatively, sending module 54 includes：Judging unit 542, decoded positions and synthesis position for judging media cascade code stream
Put and whether change；Transmitting element 544, coupled to judging unit 542, for the judgement knot in judging unit 542
Fruit is that in the case of being, decoded positions and synthesising position are sent into calling media process.
It should be noted that above-mentioned modules can be by software or hardware to realize, for the latter, Ke Yitong
Cross in the following manner realization, but not limited to this：Above-mentioned module is respectively positioned in same processor；Or, above-mentioned module distinguishes position
In multiple processors.
Embodiments of the invention additionally provide a kind of software, and the software is used to perform in above-described embodiment and preferred embodiment
The technical scheme of description.
Embodiments of the invention additionally provide a kind of storage medium.In the present embodiment, above-mentioned storage medium can be set
To store the program code for being used for performing following steps：
Step S102, calling media process receives media cascade code stream from IMS conference medium process；
Step S104, calling media process judges whether carry decoded positions and synthesising position in media cascade code stream；
Step S106, in the case where the judgment result is yes, calling media process use decoding corresponding with decoded positions
Media card decoding media cascade code stream, and decoded media are cascaded into bit-stream synthesis to many pictures code according to synthesising position
In stream；
Step S108, calling media process sends many picture bit streams to the terminal hung under calling media process.
Embodiments of the invention additionally provide a kind of storage medium.In the present embodiment, above-mentioned storage medium can be set
To store the program code for being used for performing following steps：
The media for the calling media process hung under step S202, the main main meeting process of meeting management of process cascade the solution of code stream
Code position and synthesising position, wherein, decoded positions are used to indicate to be used to decode the decoding media card that media cascade code stream,
Synthesising position is used to indicate that media cascade bit-stream synthesis to the position in many picture bit streams；
Decoded positions and synthesising position are sent to calling media process by step S204, main meeting process.
Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage
(Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as
For RAM), mobile hard disk, magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, the specific example in the present embodiment may be referred to showing described in above-described embodiment and optional embodiment
Example, the present embodiment will not be repeated here.
In order that the description of the embodiment of the present invention is clearer, it is described and illustrates with reference to alternative embodiment.
There is provided a kind of many picture controlling parties based on cloud video conference by taking cloud video conference as an example for alternative embodiment of the present invention
Method, this method is related to many picture control fields of cloud video conferencing system, more particularly to accesses cloud video council in each terminal
After conference system, how the media process associated with each terminal is receiving the code of all terminals in cloud video conferencing system
In stream, the code stream of 1+N terminal is selected and decoded, and synthesizes 1+N pictures (wherein, 1 finger one big picture, N
Refer to N number of small picture) many picture bit streams, be sent to terminal, and a kind of method how follow-up size picture switches.
Fig. 8 is the structural representation of the cloud video conferencing system according to alternative embodiment of the present invention, as shown in figure 8, cloud is regarded
Frequency conference system includes：Call media process, IMS conference medium process, call proceeding, main meeting process and terminal.Wherein,
Calling media process passes through RTP (Real-time Transport Protocol, referred to as RTP) receiving terminal
Video code flow, media cascade code stream is obtained after processing and IMS conference medium process is reported；IMS conference medium process is to media-level
Connection code stream does a forwarding job, and the media cascade code stream of other all calling media process is transmitted to and the meeting
The calling media process that media process is mutually cascaded.Between terminal and calling service can by SIP (SIP)/
The H323 of International Telecommunication Union sums up standard and interacted；Call between media process and call proceeding, call proceeding with
Pass through remote procedure call (Remote between main meeting process and between IMS conference medium process and main meeting process
Procedure Call, referred to as RPC) agreement interacts.
After the access cloud video conference of multiple terminals, by main business process is come allocation manager and sets decoded positions and synthesising position to give
In 1+N (more preferably, N<10) each calling media process in multiple image；Follow-up main business process is according to wide
Broadcast the change in source to update decoded positions and synthesising position, and be sent to corresponding calling media process.In this way,
Ensure that the multiple image that each terminal is seen is synthesized by the image for the terminal being broadcasted recently.
The decoded positions and synthesising position that oneself is then assigned to by calling media process are embedded into media cascade code stream, and
Video code flow is transmitted to each calling media process in cloud video conferencing system by IMS conference medium process.Meanwhile, exhale
Media process is made to cascade the decoded positions carried in code stream with synthesising position to decode and close according to each media received
Into 1+N pictures video code flow and be sent to terminal.Wherein, the 1+N pictures of calling media process synthesis, which do not include, is somebody's turn to do
The picture for the terminal hung under calling media process, so, that sees in each terminal hung under calling media progress is more
Picture does not all include the picture that the terminal is gathered).
In embodiments of the present invention, decoded positions and synthesising position are defined as follows：
The decoding media card that decoded positions and calling media process are created is corresponded；For there is the media of decoded positions
Code stream is cascaded, calling media process is placed on corresponding decoding media card and decoded；In the business pipe of main meeting process
In reason, if operation is seen in broadcast or choosing, image is caused to show the position hair of the small picture image layouts of the A in 1+N pictures
It is raw to change (i.e. the synthesising position of the corresponding media cascade Bit allocation of the small pictures of A is changed), such as A neither extensively
Source is broadcast, it is still small picture nor source (choosing sees that source refers to the big picture seen of broadcast source terminal) is seen in choosing, then A
Decoded positions are constant.In this way, it is possible to reduce unnecessary establishment, deletion decoding media on calling media process
Plug-in unit.
The position of synthesising position and each picture in calling media process synthesis 1+N pictures is corresponded.Media process
After the media cascade code stream for receiving decoded positions N, N roads decoding media card decoding is given；Obtaining media concatenated code
After the synthesising position M of stream, media cascade code stream is added in many picture bit streams；Wherein, synthesising position M matchmaker is carried
The corresponding picture of body cascade code stream is put into picture corresponding with synthesising position M in the calling media process many pictures to be synthesized
Position on.
Describe for convenience, in embodiments of the present invention there are N number of decoded positions in a meeting, N number of synthesising position is
Example is illustrated, wherein, in synthesising position, 0 represents broadcast source；Source is seen in 1 expression choosing；2~N represents other small pictures.
The structure for the cloud video conferencing system that alternative embodiment of the present invention is provided is described as follows：
The main meeting process of deployment：
Main meeting process is also referred to as main business process, in the control of many pictures, for allocation manager and each calling media of setting
The decoded positions and synthesising position of process, safeguard the list of decoded positions and synthesising position, subsequently according to the change of broadcast source
To update the list of decoded positions and synthesising position, and notice has the calling media process that decoded positions or synthesising position update
Newest decoded positions and synthesising position.The initial decoded positions of main meeting process and synthesising position can be according to meetings in calling
The sequencing of terminal is filled.Subsequently the list of decoded positions and synthesising position can be updated according to the change of broadcast source.
Wherein, deposited successively in the synthesising position list of main meeting process recently to the end being farthest broadcasted, if new end conduct
New broadcast source is added, then end synthesising position list being farthest broadcasted is eliminated.
The calling media process of deployment：
Call media process and include two modules in many picture control sections of processing：Decoder module and synthesis module.Call matchmaker
Body process is received after all media cascade code stream of IMS conference medium process forwarding, if carried all the way in media cascade code stream
Media are cascaded code stream by decoded positions and synthesising position, the decoded positions of calling media process then in media cascade code stream
It is placed on corresponding decoding media card and is decoded, and the synthesising position in media cascade code stream is by media concatenated code
Banish and synthesizing the corresponding position of many pictures；Then many picture bit streams after synthesis are sent to terminal by calling media process.
If decoded positions and synthesising position were not carried in media cascade code stream all the way, or decoded positions and synthesising position would be invalid
Value, calling media process Ze Jiangci roads media cascade code stream is abandoned, and this road media cascade code stream will not participate in continuous presence.
The IMS conference medium process of deployment：
IMS conference medium process does forwarding work to media cascade code stream.IMS conference medium process enters other all calling media
The media cascade code stream of journey is transmitted to the calling media process mutually cascaded with the IMS conference medium process.IMS conference medium process A leads to
Cross and IMS conference medium process B sets up media cascade, to obtain the all-calls media cascaded under IMS conference medium process B
The media cascade code stream of process.
By such scheme, main meeting process manages decoded positions and synthesising position when imaging token, for calling matchmaker
Body process is decoded and closed to receive decoded positions and synthesising position in each media cascade code stream that IMS conference medium is forwarded
Change many picture figures that each terminal is seen into the multiple image set out to terminal, and with the switching of follow-up broadcast source
Picture, wherein, the multiple image that each terminal is seen does not include local terminal image；The multiple image is nearest by 1+N
The 1+N multiple images for the end composition being broadcasted.It is independent by above-mentioned cloud video conference provided in an embodiment of the present invention
The overall control strategy of many pictures, is beneficial to media and realizes that simply when Large Copacity terminals joining the conference, media are also
Cascade decoded positions and synthesising position in code stream according to media to synthesize 1+N images, if solved in media cascade code stream
Code position and synthesising position are invalid, then this media cascade code stream can be abandoned directly, had no effect on performance, ensured that
In Large Copacity terminals joining the conference, the performance boost of the independent many pictures of cloud video conference.
The scheme of alternative embodiment of the present invention is illustrated below by example.
In this example, using carrying out media business in distributed cloud video conferencing system, the method for signaling centralized management；
Trans-regional networking is continued to use in the method, and each IMS conference medium process handles a region.
In the meeting as shown in Figure 8 of the structure of cloud video, and 1+5 picture layouts (i.e. 1 big picture, it is 5 small
Picture) if M end (M>1+5), M end corresponds M calling media process.
Step 1, main meeting process initial position list；
Assuming that current broadcast source is M0, current small picture end is followed successively by M1, M2 ..., MN；
Decoded positions queue in current main meeting process is as shown in table 1：
| Decoded positions | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M0 | M1 | M2 | M3 | M4 | M5 | M6 |
Table 1
Synthesising position queue in current main meeting process is as shown in table 2：
| Synthesising position | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M0 | M1 | M2 | M3 | M4 | M5 | M6 |
Table 2
Now, M0 terminals see that many pictures are (M1, M2, M3, M4, M5, M6), and this layout contains
Justice is represented：The 1st end represents big picture in bracket, and remaining end is small picture, and by the order at small picture end in bracket
Arranged from left to right in picture layout.Therefore, M0 terminals see 1+5 picture layouts as shown in figure 9, follow-up
The rest may be inferred for picture layout.
M0 terminals see that many pictures are (M1, M2, M3, M4, M5, M6)；
M1 terminals see that many pictures are (M0, M2, M3, M4, M5, M6)；
M2 terminals see that many pictures are (M0, M1, M3, M4, M5, M6)；
M3 terminals see that many pictures are (M0, M1, M2, M4, M5, M6)；
M4 terminals see that many pictures are (M0, M1, M2, M3, M5, M6)；
M5 terminals see that many pictures are (M0, M1, M2, M3, M4, M6)；
M6 sees that many pictures are (M0, M1, M2, M3, M4, M5) to MM terminals.
Step 2, it is assumed that broadcast M3 terminals；
After main meeting process receives the instruction of broadcast M3 terminals (picture), decoded positions queue in main meeting process
Update as shown in table 3：
| Decoded positions | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M3 | M1 | M2 | M0 | M4 | M5 | M6 |
Table 3
Synthesising position queue updates as shown in table 4 in main meeting process：
| Synthesising position | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M3 | M0 | M1 | M2 | M4 | M5 | M6 |
Table 4
Now, main meeting process can issue newest M3 decoded positions and synthesising position the calling media corresponding to M3,
M0, M1, M2 are then analogized with M3.M4, M5, M6 decoded positions and synthesising position do not change, main meeting
Process does not resend decoded positions and synthesising position.
Now, M0 terminals see that many pictures are (M3, M1, M2, M4, M5, M6)；
M1 terminals see that many pictures are (M3, M0, M2, M4, M5, M6)；
M2 terminals see that many pictures are (M3, M0, M1, M4, M5, M6)；
M3 terminals see that many pictures are (M0, M1, M2, M4, M5, M6)；
M4 terminals see that many pictures are (M3, M0, M1, M2, M5, M6)；
M5 terminals see that many pictures are (M3, M0, M1, M2, M4, M6)；
M6 sees that many pictures are (M3, M0, M1, M2, M4, M5) to MM terminals.
Step 3, it is assumed that broadcast M7 terminals；
It is follow-up with step 2, after main meeting process receives the instruction of broadcast M7 terminals, code bit is solved in main meeting process
Put queue and update as shown in table 5：
| Decoded positions | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M7 | M3 | M2 | M0 | M4 | M5 | M1 |
Table 5
Synthesising position queue updates as shown in table 6 in main meeting process：
| Synthesising position | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M7 | M3 | M0 | M1 | M2 | M4 | M5 |
Table 6
Now, M0 terminals see that many pictures are (M7, M3, M1, M2, M4, M5)；
M1 terminals see that many pictures are (M7, M3, M0, M2, M4, M5)；
M2 terminals see that many pictures are (M7, M3, M0, M1, M4, M5)；
M3 terminals see that many pictures are (M7, M0, M1, M2, M4, M5)；
M4 terminals see that many pictures are (M7, M3, M0, M1, M2, M5)；
M5 terminals see that many pictures are (M3, M0, M1, M2, M4, M5)；
M7 terminals see that many pictures are (M3, M0, M1, M2, M4, M5).
M6, M8 see that many pictures are (M7, M3, M0, M1, M2, M4) to MM terminals.
Each calling media process is received after decoded positions N media cascade code stream, is given the decoding of N roads decoder, is obtained
The synthesising position M of code stream is cascaded to media, and media cascade code stream is added into many picture bit streams, position M is put into many
The position M of picture.
Step 4, it is assumed that hang up broadcast source M7；
It is follow-up with step 3, after main meeting process receives the instruction for hanging up M7 terminals, now main meeting process can be
An end is found in many picture lists to be put into (by taking M6 as an example) in many picture lists；Now, decoded in main meeting process
Position queue updates as shown in table 7：
| Decoded positions | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M3 | M0 | M2 | M6 | M4 | M5 | M1 |
Table 7
Synthesising position queue updates as shown in table 8 in main meeting process：
| Decoded positions | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Terminal | M3 | M0 | M1 | M2 | M4 | M5 | M6 |
Table 8
Now, M0 terminals see that many pictures are (M3, M1, M2, M4, M5, M6)；
M1 terminals see that many pictures are (M3, M0, M2, M4, M5, M6)；
M2 terminals see that many pictures are (M3, M0, M1, M4, M5, M6)；
M3 terminals see that many pictures are (M0, M1, M2, M4, M5, M6)；
M4 terminals see that many pictures are (M3, M0, M1, M2, M5, M6)；
M5 terminals see that many pictures are (M3, M0, M1, M2, M4, M6)；
M6 sees that many pictures are (M3, M0, M1, M2, M4, M5) to MM terminals.
Figure 10 is the stream that control method is synthesized according to many picture bit streams of the cloud video conferencing system of alternative embodiment of the present invention
Cheng Tu, as shown in Figure 10, the flow comprise the following steps：
Step S1002, main meeting process sends the decoded positions and synthesising position of the MN in list of locations to MN respectively
Call media.
In the step, there are the calling media of decoded positions and synthesising position to receive the decoded positions of oneself from meeting process
And synthesising position.
Step S1004, IMS conference medium process does forwarding work to code stream, passes through IMS conference medium process and IMS conference medium process
Cascade come receive hung under other IMS conference medium processes calling media process media cascade code stream；And will be hung under itself
Calling media process media cascade code stream be transmitted to the all-calls media process mutually cascaded with the IMS conference medium process.
In the step, all give calling media process to do for decoding and synthesis that media cascade code stream, IMS conference medium enters
Journey only does the forwarding work of media concatenated code stream.
Step S1006, M0 to MM calling media process are received after the media cascade code stream of IMS conference medium process forwarding,
The decoded positions carried in code stream are cascaded according to media, the media of each efficient decoding position and synthesising position are cascaded into code stream
It is placed on the corresponding decoding media card that calling media process is created and is decoded.
Step S1008, M0 to MM calling media process cascade the synthesising position of code stream according to media, after decoding
Media cascade code stream add in many picture bit streams of synthesis, and be sent to terminal.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realizes that they can be concentrated on single computing device, or is distributed in multiple computing devices and is constituted
Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by they
Storage is performed by computing device in the storage device, and in some cases, can be to be held different from order herein
They, are either fabricated to each integrated circuit modules or will be many in them by the shown or described step of row respectively
Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware
Combined with software.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the technology of this area
For personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made is any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (14)
1. a kind of many picture bit stream synthetic methods, it is characterised in that including：
Call media process and receive media cascade code stream from IMS conference medium process；
The calling media process judges whether carry decoded positions and synthesising position in the media cascade code stream；
In the case where the judgment result is yes, the calling media process uses decoding corresponding with the decoded positions
Media card decodes the media cascade code stream, and closes decoded media cascade code stream according to the synthesising position
Into into many picture bit streams；
The calling media process sends many picture bit streams to the terminal hung under the calling media process.
2. according to the method described in claim 1, it is characterised in that judge the media cascade in the calling media process
Whether carried in code stream after the decoded positions and the synthesising position, methods described also includes：
In the case where judged result is no, the calling media process abandons the media cascade code stream.
3. method according to claim 1 or 2, it is characterised in that methods described also includes：
The calling media process receives media cascade Bit allocation of the main meeting process for the calling media process
Decoded positions and synthesising position；
The calling media process receives the video code flow for the terminal hung under the calling media process；
It is described calling media process by for it is described calling media process media cascade Bit allocation decoded positions and
Synthesising position is embedded in the video code flow, obtains the media cascade code stream of the calling media process；
It is described calling media process by the IMS conference medium process by it is described calling media process media concatenated code
Stream is sent to the calling media process cascaded with the IMS conference medium process.
4. a kind of many picture bit stream synthesis control methods, it is characterised in that including：
The media for the calling media process hung under main meeting process described in main meeting management of process cascade the decoding of code stream
Position and synthesising position, wherein, the decoded positions are used to indicate to be used to decode the decoding that the media cascade code stream
Media card, the synthesising position is used to indicate that the media cascade bit-stream synthesis to the position in many picture bit streams；
The decoded positions and the synthesising position are sent to the calling media process by the main meeting process.
5. method according to claim 4, it is characterised in that under main meeting process described in the main meeting management of process
The decoded positions and the synthesising position of the media cascade code stream for the calling media process hung include：
The main meeting process receives many picture orders；
The broadcast source and/or choosing that the main meeting process is indicated according to many picture orders see source, update institute
State the decoded positions and the synthesising position of media cascade code stream.
6. method according to claim 5, it is characterised in that the main meeting process refers to according to many picture controls
Make the broadcast source indicated and/or choosing see source, update the decoded positions of the media cascade code stream and the synthesis
Position includes：
The synthesising position for cascading code stream in the media changes, and the media-level that synthesising position changes
It is described in the case of joining code stream neither the media of broadcast source cascade code stream nor the media cascade code stream in source is seen in choosing
Main meeting process determines that the decoded positions for the media cascade code stream that synthesising position changes are constant；And/or
The main meeting process cascades code stream according to the media turns into the sequencing of broadcast source, is followed successively by the matchmaker
Synthesising position described in body cascade Bit allocation.
7. the method according to any one of claim 4 to 6, it is characterised in that the main meeting process is by the solution
Code position and the synthesising position, which are sent to the calling media process, to be included：
The main meeting process judge media cascade code stream the decoded positions and the synthesising position whether
Change；
In the case where the judgment result is yes, the main meeting process sends out the decoded positions and the synthesising position
Give the calling media process.
8. a kind of many picture bit stream synthesizers, applied to calling media process, it is characterised in that including：
First receiver module, for receiving media cascade code stream from IMS conference medium process；
Judge module, for judging whether carry decoded positions and synthesising position in the media cascade code stream；
Processing module, in the case where the judgment result is yes, using decoding matchmaker corresponding with the decoded positions
Body plug-in unit decodes the media cascade code stream, and decoded media are cascaded into bit-stream synthesis according to the synthesising position
Into many picture bit streams；
First sending module, for sending many picture bit streams to the terminal hung under the calling media process.
9. device according to claim 8, it is characterised in that described device also includes：
Discard module, in the case of being no in judged result, abandons the media cascade code stream.
10. device according to claim 8 or claim 9, it is characterised in that described device also includes：
Second receiver module, for receiving media cascade Bit allocation of the main meeting process for the calling media process
Decoded positions and synthesising position；
3rd receiver module, the video code flow for receiving the terminal hung under the calling media process；
Embedded module, decoded positions and synthesis for the media for the calling media process to be cascaded to Bit allocation
Position is embedded in the video code flow, obtains the media cascade code stream of the calling media process；
Second sending module, for by the IMS conference medium process by it is described calling media process media concatenated code
Stream is sent to the calling media process cascaded with the IMS conference medium process.
11. a kind of many picture bit stream composite control apparatus, applied to main meeting process, it is characterised in that including：
Management module, the media for the calling media process hung for managing under the main meeting process cascade the solution of code stream
Code position and synthesising position, wherein, the decoded positions are used to indicate to be used to decode the solution that the media cascade code stream
Code media card, the synthesising position is used to indicate that the media cascade bit-stream synthesis to the position in many picture bit streams；
Sending module, for the decoded positions and the synthesising position to be sent into the calling media process.
12. device according to claim 11, it is characterised in that the management module includes：
Receiving unit, for receiving many picture orders；
Updating block, broadcast source and/or choosing for being indicated according to many picture orders see source, update institute
State the decoded positions and the synthesising position of media cascade code stream.
13. device according to claim 12, it is characterised in that the updating block includes：
First updates subelement, and the synthesising position for cascading code stream in the media changes, and synthesis
Media that position changes cascade code stream is neither the media cascade code stream of broadcast source is nor the media in source are seen in choosing
In the case of cascading code stream, determine that the decoded positions for the media cascade code stream that synthesising position changes are constant；With/
Or
Second updates subelement, turns into the sequencing of broadcast source for cascading code stream according to the media, is followed successively by
Synthesising position described in the media cascade Bit allocation.
14. the device according to any one of claim 11 to 13, it is characterised in that the sending module includes：
Whether judging unit, the decoded positions and the synthesising position for judging the media cascade code stream are sent out
It is raw to change；
Transmitting element, in the case where the judgment result is yes, the decoded positions and the synthesising position to be sent out
Give the calling media process.
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