CN102541962A - Method and device for packing and extracting files - Google Patents
Method and device for packing and extracting files Download PDFInfo
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- CN102541962A CN102541962A CN2010106242684A CN201010624268A CN102541962A CN 102541962 A CN102541962 A CN 102541962A CN 2010106242684 A CN2010106242684 A CN 2010106242684A CN 201010624268 A CN201010624268 A CN 201010624268A CN 102541962 A CN102541962 A CN 102541962A
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Abstract
The invention discloses a method for packing and extracting files, which is used for improving a file packing method, simplifying the file extraction process and improving processing efficiency. The method for packing files includes: acquiring a to-be-packed file, generating description information which is used for describing the to-be-packed file and comprises tags indicating whether to skip; and packing the to-be-packed file and the description information to form a package file. The invention further discloses a method for extracting files and a device for realizing the methods, wherein the method for extracting files corresponds to the method for packing the files.
Description
Technical field
The present invention relates to electronic technology and data processing field, the method and the device that relate in particular to the file packing, extract.
Background technology
Along with electronics and development of Communication Technique, the especially development of mobile Internet is read and no longer is confined to books.The appearance of mobile terminal devices such as mobile phone, panel computer, E-book reader makes to move to read to become more and more universal.And the content of reading also becomes more and more abundanter, is not limited only to literal, has also comprised a lot of data contents such as image, audio frequency and video, animation, three dimensional object.
Abundant content has promoted the development of file structure, the multifile packing manner occurred.The file packing refers to the synthetic file of a plurality of files of preserving in the memory device, and the file after synthesizing is called APMB package, and the user can also extract required file from APMB package.
Existing strapping tool is that each file that needs are packed is compressed, and each file after will compressing then is written in the APMB package, and will store together with the corresponding information of each file is concentrated.In the file leaching process, just can operate after need obtaining total data.And, in reading process, resolve the content (such as certain one page) of certain part if desired, must extract the total data content of this part, if this part includes the content of larger data amounts such as audio frequency and video, three dimensional object, tend to influence treatment effeciency.
Summary of the invention
Method and device that the embodiment of the invention provides a kind of file packing, extracts are used to improve file packing method, and the simplified-file leaching process improves treatment effeciency.
A kind of file packing method may further comprise the steps:
Packaging file is treated in acquisition;
Generation is used to describe the descriptor of treating packaging file, and this descriptor comprises whether expression allows the identifier of skipping;
To treat that packaging file and descriptor are packaged into APMB package.
The method that a kind of file extracts is used for the simplified-file leaching process, improves treatment effeciency, and it may further comprise the steps:
Obtain the descriptor in the APMB package;
Extract from APMB package according to descriptor and not allow the identifier corresponding file skipped.
A kind of device that is used for the file packing comprises:
Interface module is used for obtaining to treat packaging file;
Generation module is used to generate and is used to describe the descriptor of treating packaging file, and this descriptor comprises whether expression allows the identifier of skipping;
Packetization module is used for treating that packaging file and descriptor are packaged into APMB package.
A kind of device that is used for the file extraction comprises:
First extraction module is used for obtaining the descriptor of APMB package;
Second extraction module is used for extracting from APMB package according to descriptor and does not allow the identifier corresponding file skipped.
A kind of APMB package comprises:
The descriptor part comprises whether expression allows the identifier of skipping;
The data field part comprises the identifier corresponding file that allows the identifier corresponding file of skipping and do not allow to skip.
The embodiment of the invention is provided with expression and whether allows the identifier skipped in descriptor, when extraction document, can not extract and allow the identifier corresponding file skipped, through improving file packing method, has simplified leaching process, improves treatment effeciency.
Description of drawings
Fig. 1 is the main method process flow diagram of embodiment of the invention file packing;
Fig. 2 is the synoptic diagram of APMB package structure in the embodiment of the invention;
The method flow diagram that file was packed when Fig. 3 was positioned at the file index item of APMB package for descriptor in the embodiment of the invention;
The method flow diagram that file was packed when Fig. 4 was positioned at the document entry item of APMB package for descriptor in the embodiment of the invention;
The main method process flow diagram that Fig. 5 extracts for embodiment of the invention file;
The method flow diagram of file extraction when Fig. 6 is positioned at the file index item of APMB package for descriptor in the embodiment of the invention;
The method flow of file extraction when Fig. 7 is positioned at the document entry item of APMB package for descriptor in the embodiment of the invention;
Fig. 8 is the structural drawing of packing apparatus in the embodiment of the invention;
Fig. 9 is the primary structure figure of extraction element in the embodiment of the invention;
Figure 10 is the detailed structure view of extraction element in the embodiment of the invention.
Embodiment
The embodiment of the invention is provided with expression and whether allows the identifier skipped in descriptor, when extraction document, can not extract and allow the identifier corresponding file skipped, through improving file packing method, has simplified leaching process, improves treatment effeciency.
Referring to Fig. 1, the main method flow process of present embodiment file packing is following:
Step 101: obtain to treat packaging file;
Step 102: generation is used to describe the descriptor of treating packaging file, and this descriptor comprises whether expression allows the identifier of skipping;
Step 103: will treat that packaging file and descriptor are packaged into APMB package.
The position of the descriptor that different strapping tools generates is different.Descriptor is positioned at the document entry item of APMB package; The document entry item is positioned at the afterbody of APMB package; Perhaps; Document entry item (File Entry) is positioned in APMB package between head entry (Header) and the data item (BitStream), and perhaps the document entry item is positioned at other position, does not give an example one by one here.The structure example of an APMB package is referring to shown in Figure 2.APMB package has only a head item, but a plurality of document entry items and data item can be arranged, and a document entry item is at the back immediately following a data item.The data item back can have the document entry item also can not have.If data item also has the document entry item at the back, then the descriptor of this data item front document entry item also comprises the sensing sign of a document entry item thereafter.
Descriptor in the document entry item is shown in table 1-table 3.
Table 1
As shown in table 2 among the ItemList to a description information of files:
Table 2
Introducing of various operational characters is as shown in table 3:
Table 3
Wherein, should to point to the reference position of the skippable area (skipable data section) among the corresponding BitStream be a kind of preferable implementation to the ItemOffset of EO symbol.The file that need will not allow to skip earlier this moment when packing writes APMB package, again the file that allows to skip is collectively written into APMB package, particularly writes the afterbody of BitStream.Like this, when file extracts and download, handle the reference position that can skip, just be equivalent to this BitStream processing and finish, if follow-up document entry item in addition then continues the processing of back, if do not have, then processing finishes.
The parameter of the reference position of representing skippable area and the parameter of the length of expression skippable area can be set in ItemList.The reference position of skippable area and length mark skippable area; Can not be collectively written into APMB package with the file that allows to skip this moment in packing process; But, file that does not allow to skip and the file that allows to skip are write APMB package according to the logical order between each file.
Because the position of descriptor is different, so the file packing process is also slightly different.Come to introduce in detail through several embodiment below.
Referring to Fig. 3, the method flow of file packing was following when descriptor was positioned at the file index item of APMB package in the present embodiment:
Step 301: obtain the packaging file that remains.Treat packaging file text, picture, video file and audio file etc.
Step 302: successively remaining packaging file is write APMB package.
Step 303: each file in the APMB package generates corresponding descriptor.Each descriptor comprises whether expression allows the identifier of skipping, and for example identifier is that 0 expression does not allow to skip, and is that 1 expression allows to skip.Present embodiment Chinese version file belongs to and does not allow the file skipped, multimedia file to belong to allow the file skipped, extracts and downloading process to simplify.
Step 304:, simultaneously descriptor is write the file index item for treating packaging file spanned file index entry.Be equivalent to the file index item is write APMB package.
Referring to Fig. 4, the method flow of file packing was following when descriptor was positioned at the document entry item of APMB package in the present embodiment:
Step 401: generate head entry, and write APMB package.
Step 402: obtain to treat packaging file.Can obtain part this moment treats packaging file or obtains all packaging files of treating.
Step 403: will treat that successively packaging file writes APMB package.Can will treat that packaging file writes APMB package according to the shut sequence between the file; Also can earlier the packaging file of treating that does not allow to skip be write APMB package; All do not allow to skip treat that packaging file all writes APMB package after, again the packaging file of treating that allows to skip is write APMB package.
Step 404: that confirms to allow to skip treats the positional information of packaging file in APMB package.That perhaps confirms to allow to skip treats positional information and the length information of packaging file in APMB package.
Step 405: treat that to each packaging file generates corresponding descriptor.Each descriptor comprises whether expression allows the identifier of skipping.
Preferable; Descriptor also comprises the corresponding positional information of treating packaging file of identifier that allows to skip; This mode is applicable to that the packaging file of treating of the identifier that correspondence is not allowed to skip writes APMB package; The identifier that does not allow in all correspondences under the document entry item to skip treat that packaging file all writes APMB package after, the packaging file of treating of the identifier that correspondence is allowed skip writes APMB package.Descriptor also comprises the corresponding positional information of treating packaging file and the length information of identifier that allows to skip.This mode is applicable to according to the shut sequence between the file will treat that packaging file writes APMB package.
Step 406:, simultaneously descriptor is write the document entry item to treating packaging file spanned file inlet item.
Treat packaging file if only obtain part in the step 402, when also having the file that needs packing, repeating step 402-406.
Present embodiment improves the file packing process, and corresponding, the file leaching process also improves to some extent.
Referring to Fig. 5, the main method flow process that the present embodiment file is extracted is following:
Step 501: obtain the descriptor in the APMB package.
Step 502: extract from APMB package according to descriptor and not allow the identifier corresponding file skipped.
The position of descriptor is different, and leaching process is also slightly different, comes to introduce in detail through several embodiment below.
Referring to Fig. 6, the method flow that file extracted when descriptor was positioned at the file index item of APMB package in the present embodiment is following:
Step 601: download whole APMB package.If APMB package is stored in this locality, then can skip this step.
Step 602: resolve APMB package.
Step 603:, and obtain descriptor from the afterbody extraction document index entry of APMB package.
Step 604: extract according to descriptor and not allow the identifier corresponding file skipped.Can not extract and allow the identifier corresponding file skipped.To simplify leaching process.
Referring to Fig. 7, the method flow that file extracted when descriptor was positioned at the document entry item of APMB package in the present embodiment is following:
Step 701: progressively download and resolve APMB package.If APMB package is stored in this locality, then can skip this step.
Step 702: from APMB package, extract head entry.
Step 703: extraction document inlet item from APMB package, and obtain descriptor.
Step 704: extract according to descriptor and not allow the identifier corresponding file skipped.
Step 705: when extracting ending place of the identifier corresponding file that does not allow to skip according to descriptor, the prompting of whether skipping to user's output.When obtaining the user and disagree with the order of skipping, continue step 706, when obtaining the order that the user agrees to skip, continue step 707.
Step 706: extract according to descriptor and to allow the identifier corresponding file skipped.
Step 707: judge whether that the document entry item needs to extract in addition,, then continue step 703 if having, otherwise process ends.
Downloading in the present embodiment, resolving and extract is three parallel actions, resolves first document entry item when for example extracting head entry, simultaneously file in download.Do not allow the identifier corresponding file skipped if need not extract, then can not download this part file, save downloaded resources.
Present embodiment improves the file packing process, and the APMB package that obtains also is different from prior art.APMB package in the present embodiment comprises the descriptor part, comprises whether expression allows the identifier of skipping; The data field part comprises the identifier corresponding file that allows the identifier corresponding file of skipping and do not allow to skip.Descriptor is positioned at the file index item of APMB package; Perhaps, descriptor is positioned at the document entry item of APMB package.Descriptor also comprises the corresponding positional information of treating packaging file of identifier that allows to skip; Perhaps, descriptor also comprises the corresponding positional information of treating packaging file and the length information of identifier that allows to skip.
Through the implementation procedure that above technology has been understood the file packing and extracted, this process can be realized by device, introduces in the face of the inner structure and the function of this device down.
Referring to Fig. 8, the packing apparatus in the present embodiment comprises: interface module 801, generation module 802 and packetization module 803.
Referring to Fig. 9, the extraction element in the present embodiment comprises: first extraction module 901 and second extraction module 902.
Extraction element also comprises: download module 903 is used for not allowing the identifier corresponding file skipped according to descriptor download package file.Referring to shown in Figure 10.
The identifier that allowing in the descriptor of first extraction module, 901 acquisition APMB packages skipped.Skip during identifier that second extraction module 902 obtains to allow to skip and allow the identifier corresponding file skipped, if also have data to need to extract after skipping file, order is extracted the data after the file of skipping from APMB package; Perhaps; When obtaining identifier that allowing in the descriptor of APMB package skip; Said device comprises that also Subscriber Interface Module SIM 904 is used for prompting of whether skipping to user's output and the order that obtains user feedback, and when the user allowed to skip, second extraction module 902 order from APMB package was extracted the data after the file of skipping; When the user did not allow to skip, second extraction module 902 extracted the pairing file of skipping of identifier from APMB package.
Packing apparatus in the present embodiment and extraction element can be realized by equipment such as computing machine, mobile phones.
The embodiment of the invention is provided with expression and whether allows the identifier skipped in descriptor, when extraction document, can not extract and allow the identifier corresponding file skipped, through improving file packing method, has simplified leaching process, improves treatment effeciency.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disk memory and optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the process flow diagram and/or the block scheme of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block scheme and/or square frame and process flow diagram and/or the block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computing machine or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded on computing machine or other programmable data processing device; Make on computing machine or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computing machine or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (15)
1. a file packing method is characterized in that, may further comprise the steps:
Packaging file is treated in acquisition;
Generation is used to describe the descriptor of treating packaging file, and this descriptor comprises whether expression allows the identifier of skipping;
To treat that packaging file and descriptor are packaged into APMB package.
2. the method for claim 1 is characterized in that, with treating that the step that packaging file and descriptor are packaged into APMB package comprises: will treat that earlier packaging file writes APMB package, and again descriptor write APMB package.
3. the method for claim 1 is characterized in that, descriptor is positioned at the document entry item of APMB package.
4. method as claimed in claim 3; It is characterized in that; With treating that the step that packaging file writes APMB package comprises: the packaging file of treating of the identifier that correspondence is not allowed skip writes APMB package; The identifier that does not allow in all correspondences under the document entry item to skip treat that packaging file all writes APMB package after, the packaging file of treating of the identifier that correspondence is allowed skip writes APMB package.
5. like each described method in the claim 1 to 4, it is characterized in that descriptor also comprises the corresponding positional information of treating packaging file of identifier that allows to skip; Perhaps, descriptor also comprises the corresponding positional information of treating packaging file and the length information of identifier that allows to skip.
6. the method that file extracts is characterized in that, may further comprise the steps:
Obtain the descriptor in the APMB package;
Extract from APMB package according to descriptor and not allow the identifier corresponding file skipped.
7. method as claimed in claim 6; It is characterized in that; From APMB package, extract before the identifier corresponding file that does not allow to skip according to descriptor, also comprise step: according to the identifier corresponding file that does not allow in the descriptor download package file to skip.
8. method as claimed in claim 6 is characterized in that, the step that obtains the descriptor in the APMB package comprises: the identifier that allowing in the descriptor of acquisition APMB package skipped;
Said method also comprises step: skip during the identifier that obtains to allow to skip and allow the identifier corresponding file skipped, if also have data to need to extract after skipping file, order is extracted the data after the file of skipping from APMB package; Perhaps; When obtaining identifier that allowing in the descriptor of APMB package skip; To the prompting whether user's output skips, when the user allowed to skip, order was extracted the file data of skipping afterwards from APMB package; When the user does not allow to skip, from APMB package, extract the pairing file of skipping of identifier.
9. a device that is used for the file packing is characterized in that, comprising:
Interface module is used for obtaining to treat packaging file;
Generation module is used to generate and is used to describe the descriptor of treating packaging file, and this descriptor comprises whether expression allows the identifier of skipping;
Packetization module is used for treating that packaging file and descriptor are packaged into APMB package.
10. device as claimed in claim 9 is characterized in that, descriptor also comprises the corresponding positional information of treating packaging file of identifier that allows to skip; Perhaps, descriptor also comprises the corresponding positional information of treating packaging file and the length information of identifier that allows to skip.
11. one kind is used for the device that file extracts, and it is characterized in that, comprising:
First extraction module is used for obtaining the descriptor of APMB package;
Second extraction module is used for extracting from APMB package according to descriptor and does not allow the identifier corresponding file skipped.
12. device as claimed in claim 11 is characterized in that, the identifier that allowing in the descriptor of first extraction module acquisition APMB package skipped;
Skip during identifier that second extraction module obtains to allow to skip and allow the identifier corresponding file skipped, if also have data to need to extract after skipping file, order is extracted the data after the file of skipping from APMB package; Perhaps; When obtaining identifier that allowing in the descriptor of APMB package skip, said device also comprises Subscriber Interface Module SIM, is used for the prompting of whether skipping to user's output; When the user allows to skip; Second extraction module order from APMB package is extracted the data after the file of skipping, and when the user did not allow to skip, second extraction module extracted the pairing file of the identifier of skipping from APMB package.
13. an APMB package is characterized in that, comprising:
The descriptor part comprises whether expression allows the identifier of skipping;
The data field part comprises the identifier corresponding file that allows the identifier corresponding file of skipping and do not allow to skip.
14. APMB package as claimed in claim 13 is characterized in that, descriptor is positioned at the file index item of APMB package; Perhaps, descriptor is positioned at the document entry item of APMB package.
15. APMB package as claimed in claim 13 is characterized in that, descriptor also comprises the corresponding positional information of treating packaging file of identifier that allows to skip; Perhaps, descriptor also comprises the corresponding positional information of treating packaging file and the length information of identifier that allows to skip.
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| CN2010106242684A CN102541962A (en) | 2010-12-31 | 2010-12-31 | Method and device for packing and extracting files |
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| CN2010106242684A CN102541962A (en) | 2010-12-31 | 2010-12-31 | Method and device for packing and extracting files |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103152609A (en) * | 2013-01-30 | 2013-06-12 | 深圳市同洲电子股份有限公司 | Data file playing method and related equipment and system |
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| CN1916844A (en) * | 2006-09-08 | 2007-02-21 | 华为技术有限公司 | Method for packing data, and unpacking packed data |
| CN101207758A (en) * | 2007-11-27 | 2008-06-25 | 深圳市同洲电子股份有限公司 | Method for removing fragment in record program |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006004274A1 (en) * | 2004-04-02 | 2006-01-12 | Samsung Electronic Co., Ltd. | Cyclic referencing management method and apparatus, parsing method and apparatus |
| CN1916844A (en) * | 2006-09-08 | 2007-02-21 | 华为技术有限公司 | Method for packing data, and unpacking packed data |
| CN101207758A (en) * | 2007-11-27 | 2008-06-25 | 深圳市同洲电子股份有限公司 | Method for removing fragment in record program |
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| CN103152609A (en) * | 2013-01-30 | 2013-06-12 | 深圳市同洲电子股份有限公司 | Data file playing method and related equipment and system |
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Application publication date: 20120704 |