CN102023897B - Dynamic multi-resolution self-adapting parallel method and system for video encoding and decoding at multi-core environment - Google Patents
Dynamic multi-resolution self-adapting parallel method and system for video encoding and decoding at multi-core environment Download PDFInfo
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Abstract
The invention provides dynamic multi-resolution self-adapting parallel video coding and decoding method and system at a multi-core environment. The dynamic multi-resolution self-adapting parallel video coding and decoding system comprises an initialization module, an input module, a decoding module, an output module and a statistics and state monitoring module. The invention can dynamically regulate the running tasks of cores according to code stream formats and the resolution distribution of the system, thereby obtaining sufficient decoding computing resources for different code stream formats and different resolutions; and in addition, the invention ensures the quality and the property of the system.
Description
Technical field
The present invention relates to the coding and decoding video field, particularly the adaptive parallel method of coding and decoding video dynamic multiple resolution ratio and system under a kind of many nuclear environments.
Background technology
Video decode under the complex environment is used need to process mass data simultaneously, these data have multiple code stream form, multiple resolution, adopt traditional DSP, FPGA, ASIC hardware cell, risc processor etc. all to be difficult to satisfy performance and the requirement of multi-format decoding function.
Adopt the many-core processor technology of 64 cores, utilize the abundant computational resource of many nuclears, carry out video decode by software and process, can satisfy and separate simultaneously the various video form, the application demand of multiple code stream resolution.
Summary of the invention
The purpose of this invention is to provide a kind of parallel method and system that controls the multiple nucleus system computational resource allocation, code stream form and resolution according to current decoding, the dynamic computational resource allocation of adjusting, so that take full advantage of the computational resource of system, satisfy various different-formats and resolution to the demand of decoding computational resource.
The parallel decoding method of dynamic self-adapting comprises the steps: under a kind of many nuclear environments
A, system initialization are according to system task attribute configuration table default configuration, distributes calculation resources and IO resource;
B, data input module are deposited into raw data in the shared data field of all modules after receiving packet, and each decoder module obtains decoding task to sharing data area;
C, decoder module inquiry system task attribute allocation list if there is one road video to need multinuclear to assist parallel decoding, are then revised system task attribute configuration table, and register module computational resource participates in this road decoding;
If D is without assisting the decoding request, then whether inquiry has new task, if having, obtains new task;
E, decoder module are resolved new task form and resolution, and judging whether needs to assist decoding, if need to assist decoding, then the decoding request is assisted in issue, revises system task attribute configuration table; After having new core to add, distribute decoding task to new core, parallel decoding is finished this road video decode task, after task is finished, gives back the resource of adding, restoring scene.
A kind of optimal technical scheme of the present invention is: described system task attribute configuration table is done dynamic assignment according to the operating code stream form of current system and resolution situation to computational resource.
The parallel decoding system of dynamic self-adapting under a kind of many nuclear environments is characterized in that: comprise system initialization module, load module, decoder module, output module and statistics and state monitoring module.
A kind of optimal technical scheme of the present invention is: each computing unit of described decoder module is analyzed current system task attribute allocation list, decides from task list according to system task attribute configuration table and gets new calculation task or participate in the decoding of certain promoter's large resolution video.
Another optimal technical scheme of the present invention is: described statistics and state monitoring module, and generation system task attribute allocation list, this allocation list distributes according to the operating code stream form of system and the dynamic adjustresources of resolution situation.
An also optimal technical scheme of the present invention is: described system initialization module is used for distributes calculation resources and IO resource, creates each calculation task and IO task; Described load module receives the data block that needs decoding, generates decoding task, puts into task list; Output module is exported decoded data.
The operation task that the present invention can be dynamically adjusts each core according to the code stream form in the system and resolution distribution, thus for different code streams form and different resolution can both obtain the computational resource of decoding fully, guarantee the quality and performance of system.
Description of drawings
Fig. 1 is dynamic multiple resolution ratio self-adaptive parallel algorithm flow chart.
Fig. 2 is the decode system configuration diagram of dynamic self-adapting
Specific embodiments
Below in conjunction with the drawings and specific embodiments method of the present utility model is described.
During system initialization, according to the default configuration of system task attribute configuration table, distributes calculation resources and IO resource.
Data input module is deposited into raw data in the shared data field of all modules after receiving packet, and each decoder module obtains decoding task to sharing data area.
Decoder module was inquired about current system task attribute configuration table before obtaining new task, seeing if there is certain road video needs multinuclear to assist parallel decoding, if have, revise system task attribute configuration table relevant item, the computational resource of register module participates in the parallel decoding on this road.
If can obtain new task, get new task, resolve form and the resolution of new task, determine whether need to initiate to assist the decoding request.If need other cores to assist decoding, and can issue new decoding and assist request, revise so system task attribute configuration table relevant item, request is assisted in the issue decoding.Behind other cores registration computational resources, the distribution decoding task is given the core that adds, and parallel decoding is finished the decoding task of this road video.After task is finished, give back the computational resource of adding, restoring scene.
Claims (3)
1. the parallel decoding method of dynamic self-adapting under many nuclear environments is characterized in that: comprise the steps:
A, system initialization are according to system task attribute configuration table default configuration, distributes calculation resources and IO resource;
B, data input module are deposited into raw data in the shared data field of all modules after receiving packet, and each decoder module obtains decoding task to sharing data area;
C, decoder module inquiry system task attribute allocation list if there is one road video to need multinuclear to assist parallel decoding, are then revised system task attribute configuration table, and register module computational resource participates in this road decoding;
If D is without assisting the decoding request, then whether inquiry has new task, if having, obtains new task;
E, decoder module are resolved new task form and resolution, and judging whether needs to assist decoding, if need to assist decoding, then the decoding request is assisted in issue, revises system task attribute configuration table; After having new core to add, distribute decoding task to new core, parallel decoding is finished this road video decode task, after task is finished, gives back the resource of adding, restoring scene.
2. the parallel decoding method of dynamic self-adapting under a kind of many nuclear environments as claimed in claim 1, it is characterized in that: described system task attribute configuration table is done dynamic assignment according to the operating code stream form of current system and resolution situation to computational resource.
3. the parallel decoding system of dynamic self-adapting under many nuclear environments is characterized in that: comprise system initialization module, load module, decoder module, output module and statistics and state monitoring module;
Each computing unit of described decoder module is analyzed current system task attribute allocation list, decides from task list according to system task attribute configuration table and gets new calculation task or participate in the decoding of certain promoter's large resolution video;
Described decoder module inquiry system task attribute allocation list if there is one road video to need multinuclear to assist parallel decoding, is then revised system task attribute configuration table, and register module computational resource participates in this road decoding; If without assisting the decoding request, then whether inquiry has new task, if having, obtains new task;
Described decoder module is resolved new task form and resolution, and judging whether needs to assist decoding, if need to assist decoding, then the decoding request is assisted in issue, revises system task attribute configuration table; After having new core to add, distribute decoding task to new core, parallel decoding is finished this road video decode task, after task is finished, gives back the resource of adding, restoring scene;
Described statistics and state monitoring module, generation system task attribute allocation list, this allocation list distributes according to the operating code stream form of system and the dynamic adjustresources of resolution situation;
Described system initialization module is used for distributes calculation resources and IO resource, creates each calculation task and IO task; Described load module receives the data block that needs decoding, generates decoding task, puts into task list; Output module is exported decoded data.
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| CN101150726A (en) * | 2007-09-30 | 2008-03-26 | 四川长虹电器股份有限公司 | Decoding task allocation method for dual core video decoder |
| CN101261591A (en) * | 2008-04-28 | 2008-09-10 | 艾诺通信系统（苏州）有限责任公司 | Multi- nuclear DSP system self-adapting task scheduling method |
| CN101561923A (en) * | 2008-04-16 | 2009-10-21 | 上海锐动信息技术有限公司 | Coordinative render control system and control method thereof |
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| WO2007109894A1 (en) * | 2006-03-28 | 2007-10-04 | Radisys Canada, Inc. | Multimedia processing in parallel multi-core computation architectures |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101150726A (en) * | 2007-09-30 | 2008-03-26 | 四川长虹电器股份有限公司 | Decoding task allocation method for dual core video decoder |
| CN101561923A (en) * | 2008-04-16 | 2009-10-21 | 上海锐动信息技术有限公司 | Coordinative render control system and control method thereof |
| CN101261591A (en) * | 2008-04-28 | 2008-09-10 | 艾诺通信系统（苏州）有限责任公司 | Multi- nuclear DSP system self-adapting task scheduling method |
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Inventor after: Liu Li Inventor after: He Dingding Inventor after: Lan Facai Inventor after: Xu Jianwei Inventor after: Cai Huayuan Inventor after: Wan Wei Inventor after: Liu Xingbin Inventor after: Wang Po Inventor after: Shao Zongyou Inventor before: Liu Li Inventor before: He Dingding Inventor before: Lan Facai Inventor before: Xu Jianwei Inventor before: Cai Huayuan Inventor before: Wan Wei Inventor before: Liu Xingbin Inventor before: Wang Po |
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Free format text: CORRECT: INVENTOR; FROM: LIU LI HE DINGDING LAN FACAI XU JIANWEI CAI HUAYUAN WAN WEI LIU XINGBIN WANG PO TO: LIU LI HE DINGDING LAN FACAI XU JIANWEI CAI HUAYUAN WAN WEI LIU XINGBIN WANG PO SHAO ZONGYOU |
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