CN106686386A - Multi-channel video decoding method and device - Google Patents

Multi-channel video decoding method and device Download PDF

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Publication number
CN106686386A
CN106686386A CN201611152116.2A CN201611152116A CN106686386A CN 106686386 A CN106686386 A CN 106686386A CN 201611152116 A CN201611152116 A CN 201611152116A CN 106686386 A CN106686386 A CN 106686386A
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China
Prior art keywords
decoding
video
capability value
decoded
request
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CN201611152116.2A
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Chinese (zh)
Inventor
付罗
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Beijing Jiaxun Feihong Electrical Co Ltd
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Beijing Jiaxun Feihong Electrical Co Ltd
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Priority to CN201611152116.2A priority Critical patent/CN106686386A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/40Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Abstract

The embodiments of the present invention disclose a multi-channel video decoding method and device. The multi-channel video decoding method includes the following steps that: a decoding request is generated when a video to be decoded is received; the decoding request is responded according to current decoding capability, so that decoding operation for the video to be decoded can be allowed or rejected; and the video to be decoded is decoded. With the multi-channel video decoding method and device of the present invention adopted, application breakdown caused by factors such as insufficient decoding capability in the multi-channel video decoding process of a terminal can be avoided.

Description

A kind of multichannel video decoding method and device
Technical field
The present invention relates to video decoding techniques field, and in particular to a kind of multichannel video decoding method and device.
Background technology
The terminal video decoding capability of ARIXTRA (Android) operating system is limited, and multi-channel video is applied in android terminal Decoding can only be processed by background system, and existing processing method includes:Do in video conference or video monitoring system backstage Video Composition, due to only supporting 1 tunnel high definition decoding on general Android system, so multi-channel video is synthesized into video all the way carrying out Decoding.Can reduce, per video resolution all the way, for example to do video code conversion in video conference or video monitoring system backstage 2 road HD video transcodings are the clear video of 2 road signs, are decoded on Android system.
Existing solution can to a certain extent complete video decoding capability restriction, but still suffer from following asking Topic:
1) android terminal video decoding capability is limited, if opened after video decoding capability video, then be possible to Application program (App) fluctuation of service occur causes collapse.
2) excessive is relied on to background system, if background system does not support Video Composition or video code conversion, then ARIXTRA end End there is a possibility that App collapses when opening multi-channel video.
3) when accessing the 3rd side's video monitoring system in video conferencing system, it is impossible to realize overall Video Composition or transcoding When, then android terminal there is a possibility that App collapses when opening multi-channel video.
The content of the invention
In view of this, the present invention provides a kind of multichannel video decoding method and device, to solve prior art in multichannel regard The problem of the application crash that frequency exists when decoding.
On the one hand, a kind of multichannel video decoding method is embodiments provided, including:
When receiving video to be decoded, decoding request is produced;
Responded to decoding request according to current decoding capability, to allow or refuse to treat the decoding behaviour of decoding video Make;
Treat decoding video to be decoded.
Exemplarily, responded to decoding request according to current decoding capability, to allow or refuse decoding video is treated Decoding operate include:
Whether the current decoding capability value in query capability pond meets preset requirement;
If meeting preset requirement, for decoding request feedback allow decoding response, and reduce in ability pond work as Front decoding capability value;
If being unsatisfactory for preset requirement, for the response of decoding request feedback refusal decoding.
Exemplarily, responded to decoding request according to current decoding capability, to allow or refuse decoding video is treated Decoding operate include:
It is decoding request distribution decoding capability value according to current decoding capability, as the response for allowing decoding operate;
Recognize the demand decoding capability value of video to be decoded;
Demand decoding capability value is compared with distribution decoding capability value;
If comparative result is demand decoding capability value is more than distribution decoding capability value, the solution of video to be decoded is abandoned Code;
If comparative result is demand decoding capability value is less than or equal to distribution decoding capability value, sending reduction please Ask;
Reduced to distributing decoding capability value according to reduction request, and be allocated, as the sound for allowing decoding operate Should.
Exemplarily, recognize that the demand decoding capability value of video to be decoded includes:
Demand decoding capability value is recognized according to the resolution of video to be decoded.
Exemplarily, treat after decoding video decoded, also include:
If decoding failure or decoding are completed, the decoding capability value of distribution is increased in current decoding capability.
On the other hand, a kind of multichannel video decoding device is embodiments provided, including:
Video reception module, for receiving video to be decoded, and produces decoding request;
Decoding request processing module, for being responded to decoding request according to current decoding capability, to allow or refuse Treat the decoding operate of decoding video;
Video decoding module, is decoded for treating decoding video.
Exemplarily, decoding request processing module includes:
Query unit, for query capability pond in current decoding capability value whether meet preset requirement;
Decoding request-response unit is allowed, it is right for when the current decoding capability value in ability pond meets preset requirement Decoding request feedback allows the response of decoding, and the current decoding capability value reduced in ability pond;
Refusal decoding request-response unit, for when the current decoding capability value in ability pond is unsatisfactory for preset requirement, Response to decoding request feedback refusal decoding.
Exemplarily, decoding request processing module includes:
Allocation unit, for being decoding request distribution decoding capability value according to current decoding capability, as permission decoding behaviour The response of work;
Recognition unit, for recognizing demand decoding capability value according to the resolution of video to be decoded;
Comparing unit, for demand decoding capability value to be compared with distribution decoding capability value, if comparative result is Demand decoding capability value then abandons the decoding of video to be decoded more than distribution decoding capability value;
Decoding operate response unit is allowed, for when demand decoding capability value is less than or equal to distribution decoding capability value Send and reduce request, reduced to distributing decoding capability value according to reduction request, and be allocated, as permission decoding operate Response.
Exemplarily, comparing unit is specifically for during the decoding for abandoning video to be decoded, the decoding capability value of distribution being increased In adding to current decoding capability.
Exemplarily, multichannel video decoding device also includes:
Ability value recycling module, for treating after decoding video decoded, if decoding failure or decoding are completed, The decoding capability value of distribution is increased in current decoding capability.
Multichannel video decoding method and device provided in an embodiment of the present invention, by receiving during video to be decoded, produces Decoding request, and responded to decoding request according to current decoding capability, when current decoding capability value meets pre-conditioned Decoding request response is allowed, is then decoding request distribution decoding capability value, it is little in the demand decoding capability value of video to be decoded In or equal to distribution decoding capability value when allow decoding operate response, otherwise abandon decoding operate.Using above-mentioned technical side Method, efficiently solves the problems, such as to cause application crash because of decoding terminals scarce capacity in prior art, according to terminal Decoding capability is treated decoding video and is decoded, and when the decoding capability beyond terminal, no longer receives new video to be decoded so that The decoding operate of multi-channel video can be carried out well.
Description of the drawings
Fig. 1 is a kind of flow chart of multichannel video decoding method that the embodiment of the present invention one is provided;
Fig. 2 is a kind of flow chart of multichannel video decoding method that the embodiment of the present invention two is provided;
Fig. 3 is a kind of flow chart of multichannel video decoding method that the embodiment of the present invention three is provided;
Fig. 4 is a kind of structural representation of multichannel video decoding device that the embodiment of the present invention five is provided.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in further detail.It is understood that this place is retouched The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just Part related to the present invention is illustrate only in description, accompanying drawing and not all.
It also should be noted that, for the ease of description, illustrate only in accompanying drawing part related to the present invention rather than Full content.It should be mentioned that some exemplary embodiments are described before exemplary embodiment is discussed in greater detail Into the process or method described as flow chart.Although operations (or step) to be described as flow chart the process of order, Be many of which operation can by concurrently, concomitantly or while implement.Additionally, the order of operations can be by again Arrange.The process when its operations are completed can be terminated, it is also possible to have the additional step being not included in accompanying drawing. The process can correspond to method, function, code, subroutine, subprogram etc..
Embodiment one
Fig. 1 is a kind of flow chart of multichannel video decoding method that the embodiment of the present invention one is provided.The method of the present embodiment Can be performed by multichannel video decoding device, the device can be realized by way of software and/or hardware, and typically can be integrated in For in the terminal for decoding multi-channel video, specifically including video conference system terminal or monitoring system terminal.As shown in figure 1, The multichannel video decoding method that the present embodiment is provided, specifically includes:
S110, when receiving video to be decoded, produce decoding request.
Generally, the transmission of video resource needs to compress video resource according to certain said shank, i.e., by specific Compress technique, by the file of certain video format the mode of another kind of video format file is converted into.In video streaming the most Important encoding and decoding standard have International Telecommunication Association H.261, H.263, H.264, the M-JPEG of motor rest motion picture expert group version and state MPEG series standards of border Motion Picture Experts Group of standardization body etc..H.264 it is International Organization for Standardization (ISO) and world electricity The new-generation digital video compression format after MPEG4 that letter alliance (ITU) is proposed jointly.With other existing Video codings Standard is compared, and H.264 standard provides more outstanding image quality under identical bandwidth, the compression under equal image quality Efficiency improve 2 times or so than former standard (MPEG2).
Terminal is passed to by transmission line after video resource coding, the video resource that terminal is received is to be decoded regarding Frequently, terminal is needed the video to be decoded according to the form decoded back of agreement into the video that can be played.Terminal is being received During multichannel video to be decoded, can be according to the sequencing for receiving video to be decoded, or according to default priority, Huo Zhesui Treat decoding video to be decoded machine.Multichannel video decoding method provided in an embodiment of the present invention, is receiving to be decoded regarding During frequency, decoding request is produced, the decoding is asked for whether carrying out decoding operate to terminal request.
S120, according to current decoding capability to decode request respond, to allow or refuse to treat the solution of decoding video Code operation.
The decoding capability of terminal is usually fixed and limited, if opening the video beyond decoding terminals ability, can Application program fluctuation of service can occurs and then causes application crash.Therefore, in the present embodiment, according to present terminal Decoding capability to decode request respond, if without departing from the decoding capability of present terminal, allowing video to be decoded to enter Row decoding operate;Otherwise refuse the decoding operate of video to be decoded.
S130, treat decoding video and decoded.
Video decoding is a process that can be decompressed to digital video, the video text that can be crossed ciphered compressed After part decoding by player plays out.In the present embodiment, video to be decoded without departing from present terminal decoding capability quilt When allowing to carry out decoding operate, the video to be decoded is decoded, show and play video.
Exemplarily, treat after decoding video decoded, also include:
If decoding failure or decoding are completed, the decoding capability value of distribution is increased in current decoding capability.
Multichannel video decoding method provided in an embodiment of the present invention, by receiving during video to be decoded, producing decoding please Ask, and responded to decoding request according to current decoding capability, solution is allowed when current decoding capability value meets pre-conditioned Code request response, and carry out decoding operate.Using above-mentioned technical method, efficiently solve in prior art because of decoding terminals ability Not enough and cause the problem of application crash, treating decoding video according to the decoding capability of terminal is decoded, when beyond eventually The decoding capability at end, no longer receives new video to be decoded so that the decoding operate of multi-channel video can be carried out well.
Embodiment two
Fig. 2 is a kind of flow chart of multichannel video decoding method that the embodiment of the present invention two is provided.As shown in Fig. 2 upper On the basis of stating embodiment, in the multichannel video decoding method that the present embodiment is provided, according to current decoding capability to decoding request Responded, included with the decoding operate for allowing or refusing to treat decoding video:
Whether the current decoding capability value in S121a, query capability pond meets preset requirement.
When frequently create delete (destructions) a large amount of objects when, the establishment of object delete caused expense do not allow it is little Look, in order to improve performance, generally require an object pool as caching, when object is activated, extract from pond;Disabling object When, in putting back to pond, next request is waited, so as to reduce the expense for creating object.In the present embodiment, made using an ability pond For caching, the decoding capability value of terminal is put in ability pond and is managed collectively.
When being responded to decoding request according to current decoding capability, the current decoding capability value first in query capability pond Whether preset requirement is met.Wherein, preset requirement can have remaining decoding capability value, remaining decoding capability in ability pond Value can be one, two or more, and the number of remaining decoding capability value can be according to decoding request demand in preset requirement Decoding capability value is arranged, such as the decoding capability value of known decoding request demand is two, then preset requirement is have in ability pond Two decoding capability values, i.e.,:When there are two decoding capability values in inquiring ability pond, then judge that current decoding capability value meets Preset requirement.
If S122a, meeting preset requirement, the response of decoding is allowed for decoding request feedback, and reduce ability pond In current decoding capability value.
When judging that current decoding capability value meets preset requirement, the response of decoding is allowed for decoding request feedback, that is, permitted Permitted to treat decoding video and decoded, and decoding capability value is distributed to into decoding request.The ability of the decoding request has been distributed to Value, reduces immediately so that the current decoding capability value in ability pond can correctly reflect the terminal current residual from ability pond Distributable decoding capability.
If S123a, being unsatisfactory for preset requirement, for the response of decoding request feedback refusal decoding.
When judging that current decoding capability value is unsatisfactory for preset requirement, refuse the response of decoding for decoding request feedback, i.e., Refusal is treated decoding video and is decoded.
Multichannel video decoding method provided in an embodiment of the present invention, by query capability pond in current decoding capability value be It is no to meet preset requirement, and decoding request response, otherwise refusal decoding are allowed when current decoding capability value meets pre-conditioned Request response.Using above-mentioned technical method, efficiently solve in prior art causes to apply journey because of decoding terminals scarce capacity Sequence collapse problem, decoding video is treated according to the decoding capability of terminal and is decoded, when beyond terminal decoding capability, no longer Receive new video to be decoded so that the decoding operate of multi-channel video can be carried out well.
Embodiment three
Fig. 3 is a kind of flow chart of multichannel video decoding method that the embodiment of the present invention three is provided.As shown in figure 3, upper On the basis of stating embodiment, in the multichannel video decoding method that the present embodiment is provided, according to current decoding capability to decoding request Responded, included with the decoding operate for allowing or refusing to treat decoding video:
S121b, according to current decoding capability for decoding request distribution decoding capability value, as allow decoding operate sound Should.
Further, according to current decoding capability be decoding request distribution decoding capability value can be will be in ability pond it is surplus Remaining decoding capability value is fully allocated to decoding request;The decoding capability value of default unit can also be distributed to decoding request, example It can be two or four decoding capability values such as to preset unit.
S122b, the demand decoding capability value for recognizing video to be decoded.
Exemplarily, recognize that the demand decoding capability value of video to be decoded includes:
Demand decoding capability value is recognized according to the resolution of video to be decoded.
Video resolution refers to valid pixel value ppi (per inch pixel Pixel per inch) in unit length, depending on Common video resolution in frequency meeting and video monitoring:CIF:352 × 288,4CIF:704 × 576,720P:1280 × 720, 1080P:1920×1080。
Wherein, video resolution is with the corresponding relation of demand decoding capability value:1 road 1080P rank H264 encoded videos Stream decoding needs 4 decoding capability values, 1 road 720P ranks H264 encoded video streams decoding to need 2 decoding capability values, 1 tunnel The decoding of 4CIF ranks H264 encoded video streams needs 1 decoding capability value.
S123b, by demand decoding capability value with distribution decoding capability value be compared.
If S124b, comparative result are demand decoding capability value is more than distribution decoding capability value, video to be decoded is abandoned Decoding.
If demand decoding capability value is more than distribution decoding capability value, then it represents that decoding energy of the video to be decoded beyond terminal Power, in order to avoid the decoding of video to be decoded is abandoned in end application collapse.
Exemplarily, if being that the decoding capability value of default unit is distributed to into decoding request in S121b, knot is compared When fruit is more than distribution decoding capability value for demand decoding capability value, can be with the decoding capability of the application unmet demand in ability pond Value, if application is less than the decoding for abandoning video to be decoded, if can apply arriving, the energy that the decoding request is applied in ability pond Force value distributes to the decoding request, and now, the demand decoding capability value for decoding request is equal to the decoding capability value of distribution.
If S125b, comparative result are demand decoding capability value is less than or equal to distribution decoding capability value, contracting is sent Subtract request.
If demand decoding capability value less than or equal to distribution decoding capability value, then it represents that video to be decoded without departing from The decoding capability of terminal, can treat decoding video carries out decoding operate, and sends the request of reduction ability value to ability pond.
S126b, reduced to distributing decoding capability value according to reduction request, and be allocated, as allowing decoding behaviour The response of work.
Reduced to distributing decoding capability value according to reduction request, and according to the demand decoding capability value of video to be decoded Carry out ability value distribution, the decoding capability value of its demand of video distribution as to be decoded, as the response for allowing decoding operate.
Multichannel video decoding method provided in an embodiment of the present invention, is decoding request distribution according to the current decoding capability of terminal Decoding capability value, when the demand decoding capability value of video to be decoded is less than or equal to distribution decoding capability value decoding behaviour is allowed The response of work, otherwise abandons decoding operate.Using above-mentioned technical method, efficiently solve in prior art because of decoding terminals ability Not enough and cause the problem of application crash, treating decoding video according to the decoding capability of terminal is decoded, when beyond eventually The decoding capability at end, no longer receives new video to be decoded so that the decoding operate of multi-channel video can be carried out well.
Example IV
It is provided in an embodiment of the present invention below by way of a specific application scenarios explanation on the basis of above-described embodiment Multichannel video decoding method.In the present embodiment, when carrying out video conference on the terminal device, terminal unit support 1 road 1080P or 2 road 720P or 4 road 4CIF ranks H264 encoded video streams are decoded simultaneously.
By the decoding capability equivalent of terminal unit into decoding capability value, decoding capability value is arranged:Total value 4, i.e. terminal Total decoding capability of equipment is 4, and respectively becoming 41,1 road 1080P ranks H264 encoded video streams decodings needs 4 decoding energy Force value, 1 road 720P ranks H264 encoded video streams decoding needs 2 decoding capability values, 1 road 4CIF rank H264 encoded video streams 1 decoding capability value of needs is decoded, its corresponding relation is:
a)4:1080P
b)2:720P
c)1:4CIF
41 value objects of terminal unit decoding capability value are put into into one by one object pool unified management.
When receiving video to be decoded all the way, decoding request is produced, from object pool application decoding capability value, if application is not Arrive, then the response of refusal decoding request;If can apply to 1 ability value, the response of decoding request is allowed, and by ability pond In current decoding capability value reduce one.
When allowing decoding request response to be followed by receiving video flowing, the first frame video sequence parameter collection (SPS) information is parsed, obtained Video resolution is simultaneously converted to decoding capability value, if parsing failure, then it is assumed that the video resolution of video to be decoded is 1080P。
Wherein, video resolution is converted into video capability computing formula:
1080P standard values:1920*1080=2457600,>=2457600 are thought 1080P video capabilities.
720P standard values:1280*720=921600,>=921600 and<2457600, then it is assumed that 720P video capabilities.
4CIF standard values:704*576=405504,<921600 are thought 4CIF video capabilities.
From object pool application decoding capability value, if application opens this road video to decoding capability value;If application is not To enough decoding capability values, then this road video is closed, while returning the decoding capability value applied.
After closing this road video to be decoded, this road decoding capability value is returned into object pool.
Other road video decoding codes are processed using similar algorithm
The multichannel video decoding method that the present embodiment is provided, it is ensured that video conference terminal application program stably can use;Automatically Video capability is calculated, terminal unit is lifted and is supported multichannel video decoding probability, meet multi-channel video service application demand;Avoid Terminal system multichannel video decoding scarce capacity causes application crash problem, lifts application program stability.
Embodiment five
Fig. 4 is a kind of structural representation of multichannel video decoding device that the embodiment of the present invention five is provided.As shown in figure 4, The multichannel video decoding device includes:
Video reception module 110, for receiving video to be decoded, and produces decoding request;
Decoding request processing module 120, for being responded to decoding request according to current decoding capability, to allow or refuse The decoding operate of absolute video to be decoded;
Video decoding module 130, is decoded for treating decoding video.
Exemplarily, multichannel video decoding device also includes:
Ability value recycling module 140, for treating after decoding video decoded, if decoding failure or decoded Into then the decoding capability value of distribution is increased in current decoding capability.
Exemplarily, decoding request processing module includes:
Query unit, for query capability pond in current decoding capability value whether meet preset requirement;
Decoding request-response unit is allowed, it is right for when the current decoding capability value in ability pond meets preset requirement Decoding request feedback allows the response of decoding, and the current decoding capability value reduced in ability pond;
Refusal decoding request-response unit, for when the current decoding capability value in ability pond is unsatisfactory for preset requirement, Response to decoding request feedback refusal decoding.
Exemplarily, decoding request processing module includes:
Allocation unit, for being decoding request distribution decoding capability value according to current decoding capability, as permission decoding behaviour The response of work;
Recognition unit, for recognizing demand decoding capability value according to the resolution of video to be decoded;
Comparing unit, for demand decoding capability value to be compared with distribution decoding capability value, if comparative result is Demand decoding capability value then abandons the decoding of video to be decoded more than distribution decoding capability value;
Decoding operate response unit is allowed, for when demand decoding capability value is less than or equal to distribution decoding capability value Send and reduce request, reduced to distributing decoding capability value according to reduction request, and be allocated, as permission decoding operate Response.
Exemplarily, comparing unit is specifically for during the decoding for abandoning video to be decoded, the decoding capability value of distribution being increased In adding to current decoding capability.
The multichannel video decoding device that the embodiment of the present invention is provided can be used to perform what any embodiment of the present invention was provided Multichannel video decoding method, possesses corresponding functional module, realizes identical beneficial effect.
Obviously, it will be understood by those skilled in the art that above-mentioned each module of the invention or each step can be with general Realizing, they can be concentrated on single computing device computing device, or be distributed in the net that multiple computing devices are constituted On network, alternatively, they can be realized with the executable program code of computer installation, such that it is able to be stored in depositing Performed by computing device in storage device, or they are fabricated to respectively each integrated circuit modules, or by them Multiple modules or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware With the combination of software.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes, Readjust and substitute without departing from protection scope of the present invention.Therefore, although the present invention is carried out by above example It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also More other Equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.

Claims (10)

1. a kind of multichannel video decoding method, it is characterised in that include:
When receiving video to be decoded, decoding request is produced;
The decoding request is responded according to current decoding capability, to allow or refuse the decoding to the video to be decoded Operation;
The video to be decoded is decoded.
2. method according to claim 1, it is characterised in that the decoding request is rung according to current decoding capability Should, to allow or refuse to include the decoding operate of the video to be decoded:
Whether the current decoding capability value in query capability pond meets preset requirement;
If meeting preset requirement, the response of decoding is allowed for the decoding request feedback, and reduced in the ability pond Current decoding capability value;
If being unsatisfactory for preset requirement, for the response of the decoding request feedback refusal decoding.
3. method according to claim 1, it is characterised in that the decoding request is rung according to current decoding capability Should, to allow or refuse to include the decoding operate of the video to be decoded:
It is the decoding request distribution decoding capability value according to current decoding capability, as the response for allowing decoding operate;
Recognize the demand decoding capability value of the video to be decoded;
The demand decoding capability value is compared with the distribution decoding capability value;
If comparative result be the demand decoding capability value more than the distribution decoding capability value, abandon described to be decoded regard The decoding of frequency;
If comparative result is the demand decoding capability value distributes decoding capability value less than or equal to described, reduction is sent Request;
The distribution decoding capability value is reduced according to the reduction request, and is allocated, as permission decoding operate Response.
4. method according to claim 3, it is characterised in that the demand decoding capability value bag of the identification video to be decoded Include:
Demand decoding capability value is recognized according to the resolution of the video to be decoded.
5. method according to claim 3, it is characterised in that after decoding to the video to be decoded, also include:
If decoding failure or decoding are completed, the decoding capability value of distribution is increased in current decoding capability.
6. a kind of multichannel video decoding device, it is characterised in that include:
Video reception module, for receiving video to be decoded, and produces decoding request;
Decoding request processing module, for being responded to the decoding request according to current decoding capability, to allow or refuse Decoding operate to the video to be decoded;
Video decoding module, for decoding to the video to be decoded.
7. device according to claim 6, it is characterised in that the decoding request processing module includes:
Query unit, for query capability pond in current decoding capability value whether meet preset requirement;
Decoding request-response unit is allowed, for when the current decoding capability value in ability pond meets preset requirement, to described Decoding request feedback allows the response of decoding, and the current decoding capability value reduced in the ability pond;
Refusal decoding request-response unit, for when the current decoding capability value in ability pond is unsatisfactory for preset requirement, to institute State the response of decoding request feedback refusal decoding.
8. device according to claim 6, it is characterised in that the decoding request processing module includes:
Allocation unit, for being the decoding request distribution decoding capability value according to current decoding capability, as permission decoding behaviour The response of work;
Recognition unit, for recognizing demand decoding capability value according to the resolution of the video to be decoded;
Comparing unit, for the demand decoding capability value to be compared with the distribution decoding capability value, if comparing knot Fruit is the demand decoding capability value more than the distribution decoding capability value, then abandon the decoding of the video to be decoded;
Decoding operate response unit is allowed, for being less than or equal to the distribution decoding capability when the demand decoding capability value Reduction request is sent during value, the distribution decoding capability value is reduced according to the reduction request, and be allocated, as Allow the response of decoding operate.
9. device according to claim 8, it is characterised in that the comparing unit is specifically for abandoning described to be decoded regard During the decoding of frequency, the decoding capability value of distribution is increased in current decoding capability.
10. device according to claim 8, it is characterised in that also include:
Ability value recycling module, after decoding to the video to be decoded, if decoding failure or decoding are completed, The decoding capability value of distribution is increased in current decoding capability.
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