CN103237012A - Method for processing multimedia data on basis of free components - Google Patents
Method for processing multimedia data on basis of free components Download PDFInfo
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- CN103237012A CN103237012A CN2013101057784A CN201310105778A CN103237012A CN 103237012 A CN103237012 A CN 103237012A CN 2013101057784 A CN2013101057784 A CN 2013101057784A CN 201310105778 A CN201310105778 A CN 201310105778A CN 103237012 A CN103237012 A CN 103237012A
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Abstract
The invention discloses a method for processing multimedia data on the basis of free components. The method includes steps of creating the various components for processing the multimedia data according to different functions; allowing a user to input a command for the multimedia data to be processed; creating a multimedia channel by all the components related to the inputted command and simultaneously correspondingly creating an event channel and a reference clock; sequentially processing the multimedia data to be processed by the components in the multimedia channel; controlling multimedia data processing time points according to the unified reference clock when the various components process the data; and constructing corresponding types of events when the components need to trigger the events, pushing the events to the event channel, and processing each event by a first-in first-processing principle when the event channel inquires the arrival of the events. The method for processing the multimedia data has the advantages of flexibility in configuration and high processing efficiency.
Description
Technical field
The present invention relates to the multi-medium data process field, be specifically related to a kind of multimedia data processing method based on free assembly.
Background technology
Along with the continuous development of computer technology, the application of multimedia computer is also increasingly extensive, becomes one of important development direction of information technology.Use the multimedia messages treatment technology, calculate multiple media informations such as function integrated treatment video, image, literal, sound, data, make them be integrated into a system and have good interactivity.By the obtaining, exchange, transmit and reproduce of multiple information medium, make and calculate the natural world that function is reproduced the people preferably, opened up tempting application prospect.At present, the application of multimedia messages treatment technology has related to every field, and people's work and life style have been produced great influence.
Granted publication number provides a kind of multimedia data processing method, device and system for the invention of CN102196268B, wherein method comprises: received code end transmitted stream, code stream comprises a plurality of multi-medium data frames of depositing according to the multimedia container form, and a plurality of multi-medium data frames carry out compressed encoding to source data and obtain; According to the used compressed encoding form of each multi-medium data frame in the code stream detection feature storehouse identification code stream and from code stream, extract each multi-medium data frame, wherein, code stream detection feature storehouse comprises the characteristic information for the used compressed encoding form of identification multi-medium data frame; Obtain source data according to each multi-medium data frame that extracts and used compressed encoding form thereof.
Along with development of multimedia technology, the demand that people handle for multi-medium data also increases thereupon, and the multi-medium data process software of traditional fixed function can't satisfy the diversified demand of user.
Summary of the invention
The invention discloses a kind of multimedia data processing method based on free assembly, can be according to user's needs, the assembly assembling that will have difference in functionality constitutes a complete multi-medium data and handles pipeline, for the treatment of multi-medium data, flexible configuration, the treatment effeciency height.
A kind of multimedia data processing method based on free assembly may further comprise the steps:
(1) each is used for the assembly that multi-medium data is handled according to different formation functions, comprising:
The network receiving unit is used for receiving the multimedia data stream of protocol transmission Network Based and receiving the multimedia data stream that transmits by the network protocol command request from network;
The data resolution component is used for according to network data tunneling definition multimedia data flow, obtains original multi-medium data;
The data read assembly is used for reading the multi-medium data bag according to the reference format of each file, and according to the reference format resolution data bag of each file, obtains original multi-medium data;
The data decode assembly is used for the multi-medium data bag behind the compressed encoding is decoded, and decoded data is converted to the needed data type of user;
Data storage component is used for multi-medium data is stored as the needed file format of user;
The data output precision is used for carrying out the output of multi-medium data.The output of multi-medium data can export user's display device to, the file of the memory device of user's appointment and user's appointment etc.
The assembly that each that makes up is used for the multi-medium data processing all has following feature:
A, each assembly are safeguarded a upstream components chained list and a descending assembly chained list, enumerate the upstream components that all can link with this assembly in the upstream components chained list, enumerate the descending assembly that all can link with this assembly in the descending assembly chained list;
B, each assembly have upstream components additions and deletions interface and descending assembly additions and deletions interface, and upstream components additions and deletions interface is used for increasing upstream components at the upstream components chained list, and descending assembly additions and deletions interface is used for increasing descending assembly at descending assembly chained list;
C, each assembly have the propelling movement interface of multi-medium data and extract interface, push interface and are used for the multi-medium data after this assembly processing is pushed to corresponding descending assembly, extract interface and are used for extracting multi-medium data from the upstream components of this assembly;
D, each assembly have the order passing interface, after front assembly is finished the order that upstream components passes over this order are passed to corresponding descending assembly.
The assembly that each that makes up handled for multi-medium data is all safeguarded running status separately, and carries out different data processing operations according to different running statuses.
Different running statuses comprises states such as initialization, unlatching, operation, time-out, rollback, and these running statuses can be controlled by the user, change the multi-medium data processing mode that different assemblies carry out.
(2) user is at pending multi-medium data input command.
The user is at pending multi-medium data input command, as: open file, open network flow, request media stream etc.
(3) all component that input command is related to is built into a multimedia pipeline, simultaneously event pipeline of corresponding establishment and a reference clock.
According to the order of user's input, adopt the method for link to be built into the multimedia pipeline each assembly, and cooperate event pipeline and order associated treatment multi-medium data.During the multimedia pipeline chaining, the multimedia data type of the multimedia data type of the output of upstream components and the input of descending assembly just can link when identical, is the manageable data type of this assembly in order to guarantee the data of the upstream components that each assembly receives.
The order of user's input can be divided into three types, and is as follows respectively:
(a) must transferring command, namely must be passed to the order of each assembly in the multimedia pipeline, orders such as for example moving, suspend, stop, each assembly is passed to corresponding all descending assemblies after receiving this order;
(b) but transferring command only need be passed to the ducted part assembly of multimedia, be passed to last assembly that need handle this order and can stop to transmit, if be passed to the assembly that does not need to handle this order, then this assembly can not accepted this order;
(c) can not transferring command, only be passed to the order of certain assembly, called as required by the user.
(4) utilize the ducted assembly of described multimedia successively pending multi-medium data to be handled;
When each assembly carries out the data processing, control the time point that multi-medium data is handled according to unified reference clock; When assembly needs trigger event, construct the event of respective type, and this event is pushed in the described event pipeline, when the event pipeline event that inquired arrives, handle each event by the principle that the advanced person handles earlier.When the ducted event of event need be notified the user, event is shown by user interface that the ducted event of event needs the corresponding assembly that is passed to that assembly finishes.
At user's a order, the event unification that triggers during each assembly operating is handled by the event pipeline, adopts the advanced method of handling earlier can make all events can be in an orderly manner processed and can not produce conflict between each assembly.
An order at the user, make up a multimedia pipeline, and event pipeline of corresponding structure, the pointer to object of this event pipeline is passed in each assembly that constitutes the multimedia pipeline, make ducted each assembly of multimedia can visit this event pipeline.
At user's a order, make up a multimedia pipeline, and reference clock of corresponding structure, the pointer to object of reference clock is passed to each assembly of multimedia pipeline, makes ducted each assembly of multimedia have unified reference clock.
Ducted each assembly of reference clock assurance multimedia is realized the synchronism of time when handling multi-medium data, guaranteeing in the processing procedure of multi-medium data not can the time of occurrence confusion, each assembly suspends when handling multi-medium data, and reference clock will be in halted state.
When described each assembly carries out the data processing, control the time point that multi-medium data is handled according to unified reference clock, concrete operations are: when each assembly need be handled multi-medium data according to reference clock, initiatively obtain the current reference time, and reference time of obtaining and the timestamp of multi-medium data compared, if the current reference time early than the timestamp of multi-medium data and above setting threshold, then abandons handling; If the current reference time is later than the timestamp of multi-medium data and surpasses setting threshold, then delay process.Described threshold value is 250～300ms.
Threshold value can arrange according to needs, the current reference time has not then had necessity of processing far early than the timestamp of multi-medium data, if the current reference time far is later than the timestamp of multi-medium data, then wait for when the timestamp of multi-medium data is consistent with the reference time, handle again.
When carrying out the multi-medium data transmission between each assembly, adopt consolidation form to carry out.
Unified format comprises following content:
1) data type is used for sign and is in the ducted multimedia data format of multimedia;
2) data time stabs, and is used for the time that the control multi-medium data is handled, and in the multimedia pipeline that makes up of same order data synchronously;
3) data sequence number is used for judging whether current multi-medium data is continuous;
4) specifying information of multi-medium data comprises the multimedia video related data, audio frequency related data etc.
A kind of multimedia data processing method based on free assembly of the present invention, extensibility is strong, and flexible configuration can be tackled the diversified demand of different user, treatment effeciency height.
Description of drawings
Fig. 1 is the structural representation that the present invention is based on each assembly in the multimedia data processing method of free assembly;
Fig. 2 the present invention is based on the schematic flow sheet that each module data is handled in the multimedia data processing method of free assembly;
Fig. 3 the present invention is based on order and event line treatment schematic flow sheet in the multimedia data processing method of free assembly;
Fig. 4 is the command process flow chart that the present invention is based in the multimedia data processing method of free assembly;
Fig. 5 is the concrete implementing procedure schematic diagram that the present invention is based on the multimedia data processing method of free assembly;
Fig. 6 is the schematic diagram that concerns that the present invention is based on the multimedia pipeline, event pipeline and the reference clock that make up in the multimedia data processing method of free assembly.
Embodiment
Below in conjunction with accompanying drawing, the multimedia data processing method that the present invention is based on free assembly is described in detail.
As shown in Figure 5, a kind of multimedia data processing method based on free assembly may further comprise the steps:
(1) each is used for the assembly that multi-medium data is handled according to different formation functions, comprising:
The network receiving unit is used for receiving the multimedia data stream of protocol transmission Network Based and receiving the multimedia data stream that transmits by the network protocol command request from network;
The data resolution component is used for according to network data tunneling definition multimedia data flow, obtains original multi-medium data;
The data read assembly is used for reading the multi-medium data bag according to the reference format of each file, and according to the reference format resolution data bag of each file, obtains original multi-medium data;
The data decode assembly is used for the multi-medium data bag behind the compressed encoding is decoded, and decoded data is converted to the needed data type of user;
Data storage component is used for multi-medium data is stored as the needed file format of user;
The data output precision is used for carrying out the output of multi-medium data.
The assembly that each that makes up is used for the multi-medium data processing all has following feature:
A, each assembly are safeguarded a upstream components chained list and a descending assembly chained list, enumerate the upstream components that all can link with this assembly in the upstream components chained list, enumerate the descending assembly that all can link with this assembly in the descending assembly chained list;
B, each assembly have upstream components additions and deletions interface and descending assembly additions and deletions interface, and upstream components additions and deletions interface is used for increasing upstream components at the upstream components chained list, and descending assembly additions and deletions interface is used for increasing descending assembly at descending assembly chained list;
C, each assembly have the propelling movement interface of multi-medium data and extract interface, push interface and are used for the multi-medium data after this assembly processing is pushed to corresponding descending assembly, extract interface and are used for extracting multi-medium data from the upstream components of this assembly;
D, each assembly have the order passing interface, after front assembly is finished the order that upstream components passes over this order are passed to corresponding descending assembly.
As shown in Figure 1, each assembly has: data entry format interface, data output format interface, multi-medium data coffret (comprise the propelling data interface and extract data-interface), be used for command transfer interface, upstream components link interface, descending assembly link interface, running status maintenance interface, reference clock interface, event pipe joint.
Each assembly that is used for the multi-medium data processing is all safeguarded running status separately, and carries out different data processing operations according to different running statuses.
(2) user is at pending multi-medium data input command.
As: during the play multimedia file, at first import pending file path into, next sends play command, can play.
The transmission course of order is ordered the transmission (as shown in Figure 4) in different assemblies as shown in Figure 3, operates accordingly according to command selection in the simultaneous events pipeline.
(3) all component that input command is related to is built into a multimedia pipeline, and while event pipeline of corresponding establishment and a reference clock, and registered events processing function are for the treatment of the event of different time, as shown in Figure 6.
During the play multimedia file, the assembly that relates to has: file preanalysis assembly, the resolution component that is used for Study document type, respective file type, be used for the decode component that the original multi-medium data with file parses, be used for but the multimedia initial data is decoded into corresponding broadcast format, buffer queue assembly, the level and smooth assembly of code stream, be used for smoothness, audio frequency player module, video playback assembly that control is play.
When making up the multimedia pipeline, have only the data output format interface of upstream components identical with the data entry format interface of working as front assembly, can link, each assembly can connect one or more upstream components and descending assembly.
Upstream components and descending assembly are defined as: if the processing of multi-medium data needs four assemblies of ABC through interlinking successively, then for assembly B, assembly A is the upstream components of assembly B, and assembly C is the descending assembly of assembly B.
When creating reference clock, the reference clock interface of each assembly in the multimedia pipeline is connected successively, the reference clock data recording multimedia data begins to handle the current time, and by the reference clock interface reference clock is passed to ducted each assembly of multimedia.
During establishment event pipeline, the event pipe joint of each assembly in the multimedia pipeline is connected successively, the standalone module that comprises an event queue in the event pipeline and handle all kinds event, dissimilar according to event call corresponding event processing module and handle event.
(4) utilize the ducted assembly of multimedia successively pending multi-medium data to be handled;
When each assembly carries out the data processing, control the time point that multi-medium data is handled according to unified reference clock; When assembly needs trigger event, construct the event of respective type, and this event is pushed in the event pipeline, when the event pipeline event that inquired arrives, handle each event by the principle that the advanced person handles earlier, utilize event handling function to handle during processing.
When carrying out the multi-medium data transmission between each assembly, adopt consolidation form to carry out.
Carrying out multi-medium data between each assembly handles as shown in Figure 2, after front assembly is finished the multi-medium data processing, multi-medium data directly transferred to descending assembly or after descending components request, transfer of data to descending assembly, is selected according to the difference of descending module data coffret type.
When each assembly carries out the data processing, control the time point that multi-medium data is handled according to unified reference clock, concrete operations are: when each assembly need be handled multi-medium data according to reference clock, initiatively obtain the current reference time, and reference time of obtaining and the timestamp of multi-medium data compared, if the current reference time early than the timestamp of multi-medium data and above setting threshold, then abandons handling; If the current reference time is later than the timestamp of multi-medium data and surpasses setting threshold, then delay process.Because the asynchronous side-play amount of audio frequency and video is 300ms to the maximum according to empirical value, so set the threshold to 150ms herein, i.e. audio ﹠ video skew is 300ms when maximum.
Claims (8)
1. the multimedia data processing method based on free assembly is characterized in that, may further comprise the steps:
(1) each is used for the assembly that multi-medium data is handled according to different formation functions;
(2) user is at pending multi-medium data input command;
(3) all component that input command is related to is built into a multimedia pipeline, simultaneously event pipeline of corresponding establishment and a reference clock;
(4) utilize the ducted assembly of described multimedia successively pending multi-medium data to be handled;
When each assembly carries out the data processing, control the time point that multi-medium data is handled according to unified reference clock; When assembly needs trigger event, construct the event of respective type, and this event is pushed in the described event pipeline, when the event pipeline event that inquired arrives, handle each event by the principle that the advanced person handles earlier.
2. the multimedia data processing method based on free assembly as claimed in claim 1 is characterized in that, the assembly that each that makes up in the step (1) is used for the multi-medium data processing comprises:
The network receiving unit is used for receiving the multimedia data stream of protocol transmission Network Based and receiving the multimedia data stream that transmits by the network protocol command request from network;
The data resolution component is used for according to network data tunneling definition multimedia data flow, obtains original multi-medium data;
The data read assembly is used for reading the multi-medium data bag according to the reference format of each file, and according to the reference format resolution data bag of each file, obtains original multi-medium data;
The data decode assembly is used for the multi-medium data bag behind the compressed encoding is decoded, and decoded data is converted to the needed data type of user;
Data storage component is used for multi-medium data is stored as the needed file format of user;
The data output precision is used for carrying out the output of multi-medium data.
3. the multimedia data processing method based on free assembly as claimed in claim 1 is characterized in that, the assembly that each that makes up in the step (1) is used for the multi-medium data processing all has following feature:
A, each assembly are safeguarded a upstream components chained list and a descending assembly chained list, enumerate the upstream components that all can link with this assembly in the upstream components chained list, enumerate the descending assembly that all can link with this assembly in the descending assembly chained list;
B, each assembly have upstream components additions and deletions interface and descending assembly additions and deletions interface, and upstream components additions and deletions interface is used for increasing upstream components at the upstream components chained list, and descending assembly additions and deletions interface is used for increasing descending assembly at descending assembly chained list;
C, each assembly have the propelling movement interface of multi-medium data and extract interface, push interface and are used for the multi-medium data after this assembly processing is pushed to corresponding descending assembly, extract interface and are used for extracting multi-medium data from the upstream components of this assembly;
D, each assembly have the order passing interface, after front assembly is finished the order that upstream components passes over this order are passed to corresponding descending assembly.
4. the multimedia data processing method based on free assembly as claimed in claim 1, it is characterized in that, the assembly that each that makes up in the step (1) handled for multi-medium data is all safeguarded running status separately, and carries out different data processing operations according to different running statuses.
5. the multimedia data processing method based on free assembly as claimed in claim 1, it is characterized in that, when described each assembly carries out the data processing, control the time point that multi-medium data is handled according to unified reference clock, concrete operations are: when each assembly need be handled multi-medium data according to reference clock, initiatively obtain the current reference time, and reference time of obtaining and the timestamp of multi-medium data compared, if the current reference time early than the timestamp of multi-medium data and above setting threshold, then abandons handling; If the current reference time is later than the timestamp of multi-medium data and surpasses setting threshold, then delay process.
6. the multimedia data processing method based on free assembly as claimed in claim 5 is characterized in that, described threshold value is 250～300ms.
7. the multimedia data processing method based on free assembly as claimed in claim 1 is characterized in that, when carrying out the multi-medium data transmission between each assembly, adopts consolidation form to carry out.
8. the multimedia data processing method based on free assembly as claimed in claim 7 is characterized in that consolidation form comprises:
1) data type is used for sign and is in the ducted multimedia data format of multimedia;
2) data time stabs, and is used for the time that the control multi-medium data is handled, and in the multimedia pipeline that makes up of same order data synchronously;
3) data sequence number is used for judging whether current multi-medium data is continuous;
4) specifying information of multi-medium data comprises the multimedia video related data, the audio frequency related data.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103581311A (en) * | 2013-10-25 | 2014-02-12 | 青岛海尔软件有限公司 | Juvenile home leaving/returning intelligent real-time monitoring system and method |
| CN103699862A (en) * | 2013-11-06 | 2014-04-02 | 青岛海尔软件有限公司 | Intelligent real-time monitoring system for leaving and returning of juveniles |
| CN107004185A (en) * | 2014-12-17 | 2017-08-01 | 微软技术许可有限责任公司 | The pipeline generation of the control actuated for data flow |
| CN112835644A (en) * | 2021-02-05 | 2021-05-25 | 瑞芯微电子股份有限公司 | Configurable multimedia application multiplexing method and storage equipment |
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| CN101339789A (en) * | 2008-08-13 | 2009-01-07 | 中兴通讯股份有限公司 | Implementing method of multimedia engine |
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| CN102196268A (en) * | 2011-05-06 | 2011-09-21 | 成都市华为赛门铁克科技有限公司 | Method, device and system for processing multimedia data |
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| CN101484939A (en) * | 2006-07-06 | 2009-07-15 | 高通股份有限公司 | Clock drift compensation techniques for audio decoding |
| CN101339789A (en) * | 2008-08-13 | 2009-01-07 | 中兴通讯股份有限公司 | Implementing method of multimedia engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103581311A (en) * | 2013-10-25 | 2014-02-12 | 青岛海尔软件有限公司 | Juvenile home leaving/returning intelligent real-time monitoring system and method |
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