CN102802022A - Coding and decoding system and method - Google Patents
Coding and decoding system and method Download PDFInfo
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Abstract
The invention provides a coding and decoding system and method which comprises the steps that: a user interface module receives original data from outside, and defines a data coding format and a data packaging format which are required according to the input of the user; a format identification module identifies an original packaging format of original data; a separator matched with the original packaging format of the original data in the plurality of separators is used for separating the original data; a data processing module decodes the separated original data and codes the decoded data according to the required data coding format of the user; and a packaging module packages the coded data into data required by the user according to the data packaging format required by the user. According to the coding and decoding system and method, in accordance with the actual demand of the user, the original data with one or more formats is transcoded into data with one or more formats required by the user, thus different demands of the user are met, and storage resources required by storing data with multiple formats are reduced. The user does not participate into the transcoding process, the workload of the user is lightened.
Description
Technical field
Relate generally to field of computer technology of the present invention more specifically, relates to data coding/decoding system and method.
Background technology
Along with the radio and television digitlization constantly develops, the Video Transcoding Technology demand constantly increases, and the main application fields of transcoding technology is digital television broadcasting and Digital Media front-end processing.
Current a large amount of digital video programs is MPEG-2 (Moving Pictures Experts Group-2; Dynamic image expert group) form; And many new playback equipments adopt such as advanced digital code/decode formats such as MPEG-4/H.264/Real/VC-1/AVS for improving transmission and storage efficiency; Therefore the transcoding technology that comes from MPEG-2 adopts in a large number, and also increasingly high to the requirement of relevant therewith high definition transcoding, the particularly raising of the real-time transcoding technology and the means of realization thereof.
In the prior art, a kind of multi-media transcoding server is provided, wherein, has comprised: interface module, be used to receive the transcoding task, said transcoding task is for being the task of stream media format with transcoding multimedia data; Transcoded processing module is used for carrying out to said transcoding task the transcoding processing of object flow media formats; The data block package module is used at transcoding process the part of accomplishing transcoding being encapsulated as corresponding data block according to timestamp; Transcoding progress monitoring module, this transcoding is connected with display terminal, is used for beginning from the first data block of accomplishing transcoding, on display terminal, plays corresponding data block successively according to timestamp.This technical scheme can realize the transcoding task to a certain extent.
But the transcoded data task is heavy, can take too many server resource, so when server carried out the transcoding operation, the speed of transcoding operation was slow.In addition, when server is carried out other tasks, can have a strong impact on the speed of transcoding operation, even have influence on the normal operation of server.
Summary of the invention
Can take too many server resource to multi-media transcoding in the prior art, influence the defective of rate server, the present invention proposes the decoding method and the system that can address the aforementioned drawbacks.
The invention provides a kind of decoding method, comprising: Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, required data encoding format and the data encapsulation form of definition user; The original package form of format identification module identification initial data; The separator that is complementary with the original package form of initial data in a plurality of separators separates initial data; Data processing module is decoded the initial data of separating, and according to the required data encoding format of user decoded data is encoded; And the data encapsulation of package module after will encoding based on the required data encapsulation form of user becomes the required data of user.
Preferably, the required data encoding format of user further comprises audio data coding form and video data encoding form.
Preferably; Data processing module comprises a plurality of coding and decoding video modules; Wherein, Decoding method further comprises: with the coding and decoding video module that is complementary from the coded format of the isolated original video data of initial data original video data is decoded in a plurality of coding and decoding video modules, and according to the video data encoding form to decoded coding video data.
Preferably; Data processing module also comprises a plurality of audio coding decoding modules; Wherein, Decoding method further comprises: with an audio coding decoding module that is complementary from the coded format of the isolated original audio data of initial data original audio data is decoded in a plurality of audio coding decoding modules, and according to the audio data coding form decoded voice data is encoded.
Preferably; This decoding method further comprises: when from the coded format of the isolated original audio data of initial data when identical with the audio data coding form; A plurality of audio coding decoding modules need not decoded and encode original audio data, and original audio data is as the voice data after encoding.
Preferably, one or more coding and decoding video modules of being complementary of the coded format of administration module control and original video data are decoded and are encoded original video data.
Preferably, this decoding method further comprises: after the data encapsulation after package module will be encoded became the required data of user, package module was notified the required data of user after the user accomplishes encoding and decoding and storage enclosure through Subscriber Interface Module SIM.
Preferably, the required data of the user after the package module storage enclosure further comprise: the destination address that package module is provided with according to the user in the Subscriber Interface Module SIM in advance, the required data of user after the encapsulation are stored.
The present invention also provides a kind of coding/decoding system, comprising: Subscriber Interface Module SIM, be used for receiving initial data from the outside, and according to user's input, required data encoding format and the data encapsulation form of definition user; The format identification module is used to discern the original package form of initial data; A plurality of separators, the separator that is complementary with the original package form of initial data in a plurality of separators separates initial data; Data processing module is used for the initial data of separating is decoded, and according to the required data encoding format of user decoded data is encoded; And package module, the data encapsulation after being used for will encoding based on the required data encapsulation form of user becomes the required data of user.
Preferably, the required data encoding format of user further comprises audio data coding form and video data encoding form.
Preferably; Data processing module comprises: a plurality of coding and decoding video modules; With the coding and decoding video module that is complementary from the coded format of the isolated original video data of initial data original video data is decoded in a plurality of coding and decoding video modules, and according to the video data encoding form to decoded coding video data; And administration module, be used to control one or more coding and decoding video modules that the coded format with original video data is complementary original video data is decoded and encoded.
Preferably; Data processing module further comprises a plurality of audio coding decoding modules; Wherein, When from the coded format of the isolated original audio data of initial data and audio data coding form not simultaneously, an audio coding decoding module that is complementary with the coded format of original video data in a plurality of audio coding decoding modules is decoded original audio data, and according to the audio data coding form decoded voice data is encoded.
Preferably, Subscriber Interface Module SIM also stores the destination address that the user is provided with in advance; And package module also is used for notifying the required data of user after the user accomplishes encoding and decoding and storage enclosure through Subscriber Interface Module SIM; And, the required data of user after the encapsulation are stored according to the destination address that the user in the Subscriber Interface Module SIM is provided with in advance.
Preferably, a plurality of audio coding decoding modules in Subscriber Interface Module SIM, format identification module, a plurality of separator, the data processing module are arranged on host side; And a plurality of coding and decoding video modules and administration module in the data processing module are arranged in the external equipment.
Utilize coding/decoding system of the present invention and method; Not only can realize that the data transaction with multiple different-format is the data of the required form of user; And through in external equipment, carrying out the conversion of the coded format of video data; Significantly improve data transaction speed, can satisfy user's real-time requirement.And reduced the task of server in a large number, so server can guarantee that also server normally moves when carrying out the transcoding task.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in the specification of being write, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.In the accompanying drawings:
Fig. 1 is the overview flow chart according to the decoding method of the first embodiment of the present invention;
Fig. 2 is the particular flow sheet that carries out coding-decoding operation according to a second embodiment of the present invention;
Fig. 3 is the overall construction drawing of the coding/decoding system of a third embodiment in accordance with the invention; And
Fig. 4 is the concrete structure figure of the coding/decoding system of a fourth embodiment in accordance with the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Fig. 1 is the overview flow chart according to the decoding method of the first embodiment of the present invention.
In step S100, Subscriber Interface Module SIM receives initial data from the outside, and according to user's input; Required data encoding format and the data encapsulation form of definition user; Particularly, Subscriber Interface Module SIM can receive the initial data will carry out transcoding from the outside, and according to user's input information; Define required data encoding format and the data encapsulation form of user, call the converting system of corresponding data encoding format and data encapsulation form then.
In step S102, the original package form of format identification module identification initial data.Then, according to the original package form of initial data, initial data is sent to the separator that the original package form with initial data is complementary automatically.
In step S104, the separator that is complementary with the original package form of initial data in a plurality of separators separates initial data.Separator is sent to data processing module automatically with the initial data of separating.
In step S106, data processing module is decoded the initial data of separating, and according to the required data encoding format of user decoded data is encoded.
In step 108, the data encapsulation after package module will be encoded based on the required data encapsulation form of user becomes the required data of user.
The separator that above-mentioned decoding method is complementary through the encapsulation format according to automatic selection of the encapsulation format of initial data and initial data; And import according to the user; Call corresponding data processing module; Thereby realized multiple formatted data is converted into the operation of the data of the form that the user needs, thereby can satisfy the different demands of different user.
Below will specifically describe the coding-decoding operation of step 106.
Fig. 2 is the particular flow sheet that carries out coding-decoding operation according to a second embodiment of the present invention.
The coded format of the data that the user is required further comprises audio data coding form and video data encoding form.Data processing module comprises a plurality of coding and decoding video modules; In step 202; Decoding method further comprises: with the coding and decoding video module that is complementary from the coded format of the isolated original video data of initial data original video data is decoded in a plurality of coding and decoding video modules, and according to the video data encoding form to decoded coding video data.Particularly; With the coding and decoding video module that is complementary from the coded format of the isolated original video data of initial data initial data is decoded into yuv data in a plurality of coding and decoding video modules; Then, according to the required data encoding format of user decoded yuv data is encoded.In this step, one or more coding and decoding video modules that the coded format of administration module control and original video data is complementary are decoded and are encoded original video data.Then, the video data behind the coding is sent to package module.
Whether data processing module also comprises a plurality of audio coding decoding modules, in step 204, confirm identical with the audio data coding form from the coded format of the isolated original audio data of initial data.
In step 206; If it is identical with the audio data coding form from the coded format of the isolated original audio data of initial data; Then a plurality of audio coding decoding modules need not decoded and encode original audio data, and original audio data directly is sent to package module as the voice data behind the coding.
In step 208; If it is inequality from the coded format and the audio data coding form of the isolated original audio data of initial data; Then wherein; Decoding method further comprises: with an audio coding decoding module that is complementary from the coded format of the isolated original audio data of initial data original audio data is decoded in a plurality of audio coding decoding modules, and according to the audio data coding form decoded voice data is encoded.Then, the voice data behind the coding is sent to package module.
In addition, after the data encapsulation after package module will be encoded became the required data of user, package module was notified the required data of user after the user accomplishes encoding and decoding and storage enclosure through Subscriber Interface Module SIM.Wherein, the required data of the user after the package module storage enclosure further comprise: the destination address that package module is provided with according to the user in the Subscriber Interface Module SIM in advance, the required data of user after the encapsulation are stored.Particularly; After the voice data behind the video data behind the coding that package module will receive and original audio data or the coding is packaged into the required data of user; Package module from Subscriber Interface Module SIM obtain the destination address that the user is provided with in advance and will encapsulate after the required storage of user at destination address; Notify the user to accomplish coding-decoding operation through Subscriber Interface Module SIM simultaneously; Wherein, Subscriber Interface Module SIM notifies the user to accomplish coding-decoding operation through return function or return pointer.For example, destination address can be the memory address of store data or the path and the filename of disk file.
This decoding method is under the control of administration module; Can decode and encode the original video data of same-code form through a plurality of coding and decoding video modules; One or more coding and decoding video modules that can also be complementary through the coded format with original video data are decoded to the various video data simultaneously, and according to the needed video data encoding form of user decoded data are encoded.Can realize that like this video data with one or more video code models converts the video data of the needed a kind of or a plurality of video code models of user simultaneously into.Can satisfy the demand of user's different coding form, simultaneity factor can be accomplished coding-decoding operation quickly under the control of administration module.Significantly reduce period of reservation of number, thereby satisfied the real-time transcoding demand.
Fig. 3 is the overall construction drawing of the coding/decoding system of a third embodiment in accordance with the invention.Coding/decoding system 300 comprises: Subscriber Interface Module SIM 302, be used for receiving initial data from the outside, and according to user's input, required data encoding format and the data encapsulation form of definition user; Format identification module 304 is used to discern the original package form of initial data; A plurality of separators 306, the separator that is complementary with the original package form of initial data in a plurality of separators 306 separates initial data; Data processing module 308 is used for the initial data of separating is decoded, and according to the required data encoding format of user decoded data is encoded; And package module 310, the data encapsulation after being used for will encoding based on the required data encapsulation form of user becomes the required data of user.
Through this coding/decoding system, can with the data transaction of multiple different encapsulation format and coded format the data of required encapsulation format of user and coded format.Thereby when the user needs, can be through the attribute information of simple input desired data, destination addresses etc. just can obtain expected data in a short period of time.
Fig. 4 is the concrete structure figure of the coding/decoding system of a fourth embodiment in accordance with the invention.
Coding/decoding system comprises: Subscriber Interface Module SIM 402; Format identification module 404; A plurality of separators 406; Be used for initial data is separated into original video data and original audio data and original video data is placed on video data buffer and original audio data is placed on audio data buffer; Wherein, the coded format of the required data of user further comprises audio data coding form and video data encoding form; Data processing module further comprises a plurality of audio coding decoding modules 408 and a plurality of coding and decoding video modules 414.Wherein, a plurality of audio coding decoding modules 408 in Subscriber Interface Module SIM 402, format identification module 404, a plurality of separator 406, the data processing module are arranged on host side 400.
In addition, host side 400 also is provided with system interface module on video data pretreatment module and the plate.The video data pretreatment module is used for being organized into a task fragment from a plurality of separator 406 isolated original video data according to (GOP).Send the task fragment to external equipment 412 through system interface module on the plate then.For example, external equipment 412 can be examined accelerator card for the crowd who inserts server.External equipment 412 is provided with a plurality of coding and decoding video module 414, administration module 416 and data input/output module.The data input/output module will send a plurality of coding and decoding video modules 414 to from this task fragment that system interface module on the plate of host side 400 receives.
With the coding and decoding video module that is complementary from the coded format of the isolated original video data of initial data original video data is decoded in a plurality of coding and decoding video modules 414, and according to the video data encoding form to decoded coding video data; And administration module 416, be used to control one or more coding and decoding video modules that the coded format with original video data is complementary original video data is decoded and encoded.Particularly, with the coding and decoding video module that is complementary from the coded format of the isolated original video data of initial data initial data is decoded into yuv data in a plurality of coding and decoding video modules 414.External equipment also comprises decoding back data processing module, is used for handling wanting coded data to carry out convergent-divergent according to the resolution of user requested data, for example through yuv data being carried out the convergent-divergent processing that interpolation or sampling realize data.Then, a plurality of coding and decoding video modules 414 are encoded to the yuv data of handling through convergent-divergent according to the required video data encoding form of user, for example, yuv data are encoded into the H264 data.Then, the data behind the coding are sent back host side 400 through input/output module.System interface module receives after the data behind this coding on the plate in the host side 400, sends the data behind this coding to package module 410.
Host side 400 and external equipment 412 carry out the quick transmission between the video data of original video data and transcoding through system interface module and data input/output module.The Code And Decode that carries out video data through external equipment 412 calculates, and the calculation task of server significantly reduces like this, thereby when can guarantee to satisfy user's transcoding demand, the normal operation of assurance server.In addition, have a plurality of processors on the external equipment, for example, 64 processor cores.Significantly improve the speed of transcoded data, thereby satisfied user's real-time requirement.
When the coded format of original audio data and audio data coding form not simultaneously; With an audio coding decoding module that is complementary from the coded format of the isolated original video data of initial data original audio data is decoded in a plurality of audio coding decoding modules 408; And according to the audio data coding form decoded voice data is encoded, the voice data after will encoding then is sent to package module 410.When the coded format of original audio data was identical with the audio data coding form, a plurality of audio coding decoding modules 408 need not original audio data is decoded and encoding operation, and this original audio data is sent to package module 410.
Package module 410, the data encapsulation after being used for will encoding based on the encapsulation format of data becomes the required data of user.In one embodiment, for example, H264 data and voice data are packaged into the AVI data.Package module 410 also is used to store the destination address that the user is provided with in advance.In addition; Package module 410 also is used for notifying the required data of user after the user accomplishes encoding and decoding and storage enclosure through Subscriber Interface Module SIM 402; Wherein, The destination address that package module 410 is provided with according to the user in the Subscriber Interface Module SIM 402 is in advance stored the required data of user after the encapsulation.Destination address can be memory address or disk file path and filename.
This coding/decoding system can only simply be imported the attribute information of expected data through the user; And destination address etc.; Can come conversion transcoding task according to user's request, just can be automatically be the data of one or more required forms of user with the initial data transcoding of different-format, after transcoding is accomplished; The user only need just can find the data of required form at destination address through the notice in user interface storehouse.Whole flow process is accomplished automatically, need not the user and participates in.In addition, carry out through server, and the video code conversion step that takies more than the resource is passed through the execution of many nuclear accelerator cards, so have the external equipment and the collaborative calculating of host CPU of the processor of the multinuclear heart taking the few step of resource.Significantly improve transcoding speed, can realize user's real-time requirement.Therefore, server can also carry out other operation tasks when carrying out transcoding, guarantees the normal operation of server.
More than be merely the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. decoding method comprises:
Subscriber Interface Module SIM receives initial data from the outside, and according to user's input, required data encoding format and the data encapsulation form of definition user;
The format identification module is discerned the original package form of said initial data;
The said separator that is complementary with the original package form of said initial data in a plurality of separators separates said initial data;
The said initial data that data processing module will separate is decoded, and according to the required said data encoding format of user decoded data is encoded; And
Data encapsulation after package module will be encoded based on the required said data encapsulation form of user becomes the required data of user.
2. decoding method according to claim 1 is characterized in that, the required said data encoding format of user further comprises audio data coding form and video data encoding form.
3. decoding method according to claim 2; It is characterized in that; Data processing module comprises a plurality of coding and decoding video modules; Wherein, said decoding method further comprises: with the coding and decoding video module that is complementary from the coded format of the isolated original video data of said initial data said original video data is decoded in said a plurality of coding and decoding video modules, and according to said video data encoding form to decoded coding video data.
4. decoding method according to claim 3; It is characterized in that; Data processing module also comprises a plurality of audio coding decoding modules; Wherein, said decoding method further comprises: with an audio coding decoding module that is complementary from the coded format of the isolated original audio data of said initial data said original audio data is decoded in said a plurality of audio coding decoding modules, and according to said audio data coding form decoded voice data is encoded.
5. decoding method according to claim 3; Further comprise: when from the coded format of the isolated original audio data of said initial data when identical with said audio data coding form; Said a plurality of audio coding decoding module need not decoded and encode said original audio data, and said original audio data is as the voice data after encoding.
6. decoding method according to claim 3 is characterized in that, one or more coding and decoding video modules that the coded format of administration module control and said original video data is complementary are decoded and encoded said original video data.
7. decoding method according to claim 1; Further comprise: after the data encapsulation after said package module will be encoded became the required data of user, said package module was notified the required data of user after said user accomplishes encoding and decoding and storage enclosure through said Subscriber Interface Module SIM.
8. decoding method according to claim 7; It is characterized in that; The required data of user after the said package module storage enclosure further comprise: the destination address that said package module is provided with according to the user in the said Subscriber Interface Module SIM in advance, the data that the user after the said encapsulation is required are stored.
9. coding/decoding system comprises:
Subscriber Interface Module SIM is used for receiving from the outside initial data, and according to user's input, required data encoding format and the data encapsulation form of definition user;
The format identification module is used to discern the original package form of said initial data;
A plurality of separators, the said separator that is complementary with the original package form of said initial data in said a plurality of separators separates said initial data;
Data processing module is used for the said initial data of separating is decoded, and according to the required data encoding format of user decoded data is encoded; And
Package module, the data encapsulation after being used for will encoding based on the required said data encapsulation form of user becomes the required data of user.
10. coding/decoding system according to claim 9 is characterized in that, the required said data encoding format of user further comprises audio data coding form and video data encoding form.
11., it is characterized in that said data processing module comprises according to the said coding/decoding system of claim 10:
A plurality of coding and decoding video modules; With the coding and decoding video module that is complementary from the coded format of the isolated original video data of said initial data said original video data is decoded in said a plurality of coding and decoding video module, and according to said video data encoding form to decoded coding video data; And
Administration module is used to control one or more coding and decoding video modules that the coded format with said original video data is complementary said original video data is decoded and encoded.
12. coding/decoding system according to claim 11; It is characterized in that; Data processing module further comprises a plurality of audio coding decoding modules; Wherein, When from the coded format of the isolated original audio data of said initial data and said audio data coding form not simultaneously, an audio coding decoding module that is complementary with the coded format of said original video data in said a plurality of audio coding decoding modules is decoded said original audio data, and according to said audio data coding form decoded voice data is encoded.
13. coding/decoding system according to claim 9 is characterized in that, said Subscriber Interface Module SIM also stores the destination address that the user is provided with in advance; And
Said package module also is used for notifying the required data of user after said user accomplishes encoding and decoding and storage enclosure through said Subscriber Interface Module SIM; And, the data that the user after the said encapsulation is required are stored according to the destination address that the user in the said Subscriber Interface Module SIM is provided with in advance.
14. each the described coding/decoding system according in the claim 9 to 13 is characterized in that,
A plurality of audio coding decoding modules in said Subscriber Interface Module SIM, said format identification module, said a plurality of separators, the said data processing module are arranged on host side; And
A plurality of coding and decoding video modules and said administration module in the said data processing module are arranged in the external equipment.
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| WO2021012723A1 (en) * | 2019-07-23 | 2021-01-28 | 上海哔哩哔哩科技有限公司 | Multimedia file storage and access method |
| CN112188285A (en) * | 2020-09-28 | 2021-01-05 | 北京达佳互联信息技术有限公司 | Video transcoding method, device, system and storage medium |
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