CN104778222B - Media library based on USB storage device is established and update method - Google Patents
Media library based on USB storage device is established and update method Download PDFInfo
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- CN104778222B CN104778222B CN201510129273.0A CN201510129273A CN104778222B CN 104778222 B CN104778222 B CN 104778222B CN 201510129273 A CN201510129273 A CN 201510129273A CN 104778222 B CN104778222 B CN 104778222B
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Abstract
The present invention relates to storage content management domain, a kind of media library foundation based on USB storage device and update method are provided, sweep time is long during solving the problems, such as to be scanned using the primary MediaScanner of android system, and this method includes file scan flow and scanning information extraction flow.Technical scheme proposed by the present invention can effectively reduce overall sweep time, enhance the Consumer's Experience in scanning process.
Description
Technical field
The present invention relates to storage content management domain, more particularly to a kind of media library based on USB storage device is built
Vertical and update method.
Background technology
Android system is started shooting with after storage device access, can be scanned storage device and be filtered out media file, establishes media
Information bank uses for application program.Android system is designed primarily for cell phone system, and phone memory is very limited,
Frequently plug is also not present, so MediaScanner modules are entirely capable of being competent at this work in storage card.
At present, android system is widely used in the terminals such as intelligent television, network box, and these terminals support USB to deposit
The access of equipment is stored up, and USB storage device has the characteristics of capacity is big, can frequently plug, if now still using Android systems
The primary MediaScanner that unites is scanned, it may appear that the problems such as file scan time is long, multiple scanning, wherein sweep time
Length can cause user can not fast browsing media file, and multiple scanning can aggravate system burden, system the general of interim card is occurred
Rate increase, these problems greatly reduce Consumer's Experience.
The content of the invention
【Technical problems to be solved】
It is an object of the invention to provide a kind of media library foundation based on USB storage device and update method, to solve to adopt
The problem of sweep time is long when being scanned with the primary MediaScanner of android system.
【Technical scheme】
The present invention is achieved by the following technical solutions.
Established the present invention relates to a kind of media library of USB storage device and update method, this method include file scan stream
Journey and scanning information extraction flow,
The file scan flow includes：
Step A1：Media library is established in USB storage device, the file table of the media library comprises at least video file
Table, music file table, picture file table and folder list；
Step B1：Subregion is carried out to USB storage device and obtains each virtual partition, according to file in virtual partition most
Modification time sets the scan priority of virtual partition afterwards；
Step C1：Each virtual partition is scanned successively according to scan priority, scanned through in each virtual partition
Whether there is renewal into rear inspection media library, update notification sent if media library has renewal,
The scanning information extraction flow includes：
Folder information and media file information the write-in media library that file scan is obtained.
As a preferred embodiment, also include before the step A1：
Step A2：Judge whether USB storage device accesses for the first time, if first access then performs step A1, it is on the contrary then
Perform step B2；
Step B2：Media library is traveled through, judges that file corresponding to every data item of media library whether there is, if there is no
Record corresponding to this document is then deleted from media library, judges whether change per fileinfo corresponding to data item, if
Change and corresponding record in media library is then updated according to fileinfo；
Step C2：Subregion is carried out to USB storage device and obtains each virtual partition, according to file in virtual partition most
The number of modification time and media file sets the scan priority of virtual partition afterwards, is transferred to and performs step C1.
As another preferred embodiment, the method that subregion is carried out to USB storage device includes：
Set and optimize subregion number, scanning USB storage device root obtains first class catalogue list, while will scan
The media file write-in media library arrived；
Judge whether the catalogue number in first class catalogue list is more than and optimize subregion number, if it is using one-level mesh
Record is used as virtual partition, and the subdirectories at different levels of USB storage device are otherwise obtained by the way of scanning step by step and select catalogue
Number is more than or equal to the subdirectory for optimizing subregion number as virtual partition.
As another preferred embodiment, the optimum partition number is big according to the memory space of USB storage device
It is small and be configured with storage size.
As another preferred embodiment, step C1 is stated when being scanned to virtual partition, judges virtual partition
In file whether meet the first Rule of judgment, the second Rule of judgment and the 3rd Rule of judgment, if meet if mark this article
Part folder is file to be scanned, and first Rule of judgment is not include media file, institute in file and its parent folder
State the second Rule of judgment and be more than the first judgment value for the catalogue series of this document folder, the 3rd Rule of judgment is in this document folder
The number of non-media file and the difference of sub-folder number be more than the second judgment value, the method for solving of first judgment value
Including：Media file number reduces most fast catalogue series in virtual partition where statistics file folder, selects most deep directory level
Number is used as the first judgment value；Second judgment value is in the file for do not include in virtual partition where file media file
File number average value.
As another preferred embodiment, also include after the step C1：
If the system that USB storage device is accessed is in idle condition, marked from media library in read step C1
File to be scanned be scanned, after the end of scan, if media library has renewal, send update notification.
As another preferred embodiment, the media file includes video file, music file and picture file.
As another preferred embodiment, according in virtual partition during the last modification of file in the step D2
Between and the number of media file set the method for scan priority of virtual partition to be：
First minor sort is carried out to the priority of virtual partition according to the number of media file；
According to the last modification time of file to carrying out the second minor sort to the priority of virtual partition, if there is most
Modification time identical file afterwards, then determine last modification time identical virtual partition according to the result of the first minor sort
Sequentially.
As another preferred embodiment, the number according to media file is carried out to the priority of virtual partition
The method of first minor sort is：
Virtual partition more than video file number has high priority；Virtually divide if there is video file number identical
Area, then in video file number identical virtual partition, the virtual partition more than picture file number has high priority；If depending on
When frequency file number, picture file number all same, then video file number, the virtual partition of picture file number all same
In, the virtual partition more than music file number has high priority.
As another preferred embodiment, the media file information includes title, path, the size of media file
And modification time, the media file number included in the last modification time of the folder information including file, file,
The number of the media file included in the number of non-media file that is included in file, the sub-folder of file.
【Beneficial effect】
Technical scheme proposed by the present invention has the advantages that：
(1) present invention is decomposed scanning process, and USB storage device, user are scanned using the mode of virtual partition
It has been completely scanned can without waiting for USB storage device and has accessed and has been added to media file in USB storage device recently,
During building virtual partition, the present invention is used to the root of USB storage device and scanned step by step, therefore can quickly be identified
The media file of USB storage device root.
(2) path that the present invention need not will scan during USB storage device is scanned is rejected and enables scanning process
It is enough quickly to be exited from the store path of unlikely storage media file therefore of the invention from most possible storage media file
Heat source be scanned, therefore scan more efficiently.
(3) scanning process of the invention can make full use of from media file information extraction process in different threads
Cpu resource.Therefore, the present invention can effectively reduce overall sweep time, enhance the Consumer's Experience in scanning process.
Brief description of the drawings
Fig. 1 is the flow chart for the file scan flow that embodiments of the invention provide.
Fig. 2 is the flow chart that the scanning information that embodiments of the invention provide extracts flow
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, to the specific of the present invention
Embodiment carries out clear, complete description, it is clear that and described embodiment is the part of the embodiment of the present invention, rather than
Whole embodiments, nor limitation of the present invention.Based on embodiments of the invention, those of ordinary skill in the art are not paying
The every other embodiment obtained under the premise of creative work, belongs to protection scope of the present invention.
The embodiment of the present invention, which provides a kind of media library foundation based on USB storage device and update method, this method, to be included
File scan flow and scanning information extraction flow, in the present embodiment, file scan flow and scanning information extraction flow can
To perform parallel, wherein scanning information extracts flow mainly folder information and matchmaker including scanning to obtain file scan flow
Body fileinfo writes media library, and specifically, folder information includes what is included in the last modification time of file, file
The media file included in the number of non-media file that is included in media file number, file, the sub-folder of file
Number, in addition, media file includes video file, picture file and music file, non-media file is referred to except video text
File beyond part, picture file and music file.Fig. 1 is the flow chart of file scan flow provided in an embodiment of the present invention,
Fig. 2 is the flow chart that the scanning information that embodiments of the invention provide extracts flow, as shown in figure 1, this document scanning process bag
Step S11 is included to step S20, above-mentioned steps are described in detail separately below.
Step S11：Judge whether USB storage device accesses for the first time, it is on the contrary if accessing then execution step S14 for the first time
Then perform step S12.
Specifically, after USB storage device is connected with intelligent television, first determine whether USB storage device accesses for the first time,
If first access then performs step S14, on the contrary then execution step S12.
Step S12：Media library is traveled through, according in fileinfo renewal media library corresponding to every data item of media library
Media file information.
Step S12 includes traversal media library, judges that file corresponding to every data item of media library whether there is, if not
In the presence of record corresponding to this document is then deleted from media library, judge whether change per fileinfo corresponding to data item,
Corresponding record in media library, specifically, the text in step S12 ergodic datas storehouse are updated according to fileinfo if changing
Part tong-test ammeter, video file table, music file table, picture file table, judge file in each file table whether still exist with
And whether need to update, if some file in some file table is not present, deleted in database corresponding to this document
Data message.If what is recorded in the creation time and database of some file in some file table is different and this document
The size also difference with being recorded in database, then the media file information of this document is indicated in database to be needed to update and hold
Row media file information extraction flow updates the media file information of this document, and otherwise more new file is believed directly in database
Breath.
Step S13：To USB storage device carry out subregion, and according to file in virtual partition last modification time and
The number of media file sets the priority of each virtual partition, is transferred to after having performed and performs step S16.
Specifically, step S13 carries out subregion to USB storage device and obtains each virtual partition, and according in virtual partition
The number of the last modification time and media file of file sets the scan priority of virtual partition, after step S13 has been performed
It is transferred to and performs step S16.
In step S13, the method that subregion is carried out to USB storage device comprises the following steps：
Set first and optimize subregion number, scanning USB storage device root obtains first class catalogue list, while will sweep
The media file write-in media library for retouching to obtain, optimum partition number is according to the storage size of USB storage device and with depositing
Storage space size is configured, and subregion number is optimized alternatively, it is also possible to be set by user；
Finally judge whether the catalogue number in first class catalogue list is more than and optimize subregion number, if it is using one
Otherwise level catalogue obtains the subdirectories at different levels of USB storage device by the way of scanning step by step and selects mesh as virtual partition
Record number and be more than or equal to the subdirectory for optimizing subregion number as virtual partition.
In step S13 virtual point is set according to the number of the last modification time and media file of file in virtual partition
The method of the scan priority in area comprises the following steps：
The first minor sort is carried out to the priority of virtual partition according to the number of various media files first, specifically, depending on
Virtual partition more than frequency file number has high priority；If there is video file number identical virtual partition, then video
In file number identical virtual partition, the virtual partition more than picture file number has high priority；If video file
When number, picture file number all same, then in the virtual partition of video file number, picture file number all same, music text
Virtual partition more than part number has high priority；
Finally according to the last modification time of file to carrying out the second minor sort to the priority of virtual partition, wherein empty
The last modification time of file is more late in plan subregion, and the virtual partition just has higher priority, if certain is several virtual
There is last modification time identical file in subregion, then determine the excellent of these virtual partitions according to the result of the first minor sort
First level order.
Step S14：Media library is established in USB storage device.
Specifically, because USB storage device is to access for the first time, therefore matchmaker is established in USB storage device by step S14
The file table in body storehouse, wherein media library includes video file table, music file table, picture file table and folder list.
Step S15：Subregion is carried out to USB storage device, and set according to the last modification time of file in virtual partition
Put the priority of each virtual partition.
Subregion is carried out to USB storage device and obtains each virtual partition, according to the last modification of file in virtual partition
Time sets the scan priority of virtual partition, and the last modification time of file is more late wherein in virtual partition, this virtual point
Area just has higher priority.
The method of subregion is wherein carried out to USB storage device to be included：
Set first and optimize subregion number, scanning USB storage device root obtains first class catalogue list, while will sweep
Retouch obtained media file write-in media library；
Finally judge whether the catalogue number in first class catalogue list is more than and optimize subregion number, if first class catalogue arranges
Whether the catalogue number in table, which is more than, optimizes subregion number, then using first class catalogue as virtual partition, otherwise using step by step
The mode of scanning, which obtains the subdirectories at different levels of USB storage device and selects catalogue number to be more than or equal to, optimizes subregion number
Subdirectory is as virtual partition.
Step S16：A virtual partition is selected to be scanned according to scan priority.
Each virtual partition is scanned successively according to scan priority, when some file is scanned in virtual partition
After complete, scanning information extraction flow is performed, scanning information extracts the flow mainly text including scanning to obtain file scan flow
Part presss from both sides information and media file information write-in media library, and specifically, folder information includes last modification time, the text of file
Wrapped in the media file number that is included in part folder, the number of non-media file included in file, the sub-folder of file
The number of the media file contained, in addition, non-media file refers to the text in addition to video file, picture file and music file
Part.When being scanned to each virtual partition, the embodiment of the present invention is not intended to storage media file to quickly exit
File accelerates sweep speed, terminates the continuation depth scan to some file using fuzzy scanning strategy, specifically mould
Paste scanning strategy includes：
When being scanned to virtual partition, judge whether the file in virtual partition meets the first Rule of judgment,
Two Rule of judgment and the 3rd Rule of judgment, it is file to be scanned that this document folder is marked if meeting, wherein first judges bar
For part not include media file in the parent folder of file, the second Rule of judgment is that the catalogue series of this document folder is more than first
Judgment value, the 3rd Rule of judgment are that the number of the non-media file in this document folder is more than second with the difference of sub-folder number
Judgment value, the method for solving of the first judgment value include：Media file number is reduced most fast in virtual partition where statistics file folder
Catalogue series；For the most deep catalogue series of selection as the first judgment value, the second judgment value is in virtual partition where file
The average value of file number in file not comprising media file.
Step S17：Check whether media library has renewal, update notification is sent if media library has renewal.
Specifically, check whether media library has renewal after the completion of the scanning of each virtual partition, if media library has renewal
Then send update notification.
Step S18：Judge whether that all virtual partitions are all scanned, if it is only carry out step S19, it is on the contrary
Then return and perform step S16.
Step S19：If system is in idle condition, the text to be scanned marked from media library in read step S16
Part folder is scanned.
Specifically, in step S19, if the system that USB storage device is accessed is in idle condition, from media library
The file to be scanned marked in read step S16 is scanned.
Step S20：Check whether media library has renewal, update notification is sent if media library has renewal.
Specifically, after the step S19 ends of scan, if media library has renewal, update notification is sent.
As can be seen from the above embodiments, the embodiment of the present invention is decomposed scanning process, utilizes virtual partition
Mode scans USB storage device, and user has been completely scanned can and accessed without waiting for USB storage device to be added to recently
Media file in USB storage device, during virtual partition is built, the present invention adopts to the root of USB storage device
With scanning step by step, therefore it can quickly identify the media file of USB storage device root；In addition, the embodiment of the present invention is being swept
Retouch and the path that need not be scanned is rejected during USB storage device and enable scanning process never storage media file is deposited
Storage is quickly exited in path, therefore the embodiment of the present invention is scanned from the heat source of most possible storage media file, because
This scanning is more efficiently；Finally, the scanning process of the embodiment of the present invention from media file information extraction process in different threads
In, cpu resource can be made full use of.Therefore, the embodiment of the present invention can effectively reduce overall sweep time, enhance scanning
During Consumer's Experience.
Claims (10)
1. a kind of media library based on USB storage device is established and update method, it is characterised in that including file scan flow and
Scanning information extracts flow,
The file scan flow includes：
Step A1：Media library is established in USB storage device, the file table of the media library comprises at least video file table, sound
Music file table, picture file table and folder list；
Step B1：Subregion is carried out to USB storage device and obtains each virtual partition, is repaiied according to the last of file in virtual partition
Change the scan priority of time setting virtual partition；
Step C1：Each virtual partition is scanned successively according to scan priority, after the completion of the scanning of each virtual partition
Check whether media library has renewal, update notification sent if media library has renewal,
The scanning information extraction flow includes：
Folder information and media file information the write-in media library that file scan is obtained.
2. the media library according to claim 1 based on USB storage device is established and update method, it is characterised in that described
Also include before step A1：
Step A2：Judge whether USB storage device accesses for the first time, it is on the contrary then perform if first access then performs step A1
Step B2；
Step B2：Travel through media library, judge that file corresponding to every data item of media library whether there is, if there is no then from
Delete corresponding to this document and record in media library, judge whether change per fileinfo corresponding to data item, if becoming
Change and corresponding record in media library is then updated according to fileinfo；
Step C2：Subregion is carried out to USB storage device and obtains each virtual partition, is repaiied according to the last of file in virtual partition
Change the scan priority of the number setting virtual partition of time and media file, be transferred to and perform step C1.
3. the media library according to claim 1 or 2 based on USB storage device is established and update method, it is characterised in that
The method that subregion is carried out to USB storage device includes：
Set and optimize subregion number, scanning USB storage device root obtains first class catalogue list, while will scan what is obtained
Media file writes media library；
Judge whether the catalogue number in first class catalogue list is more than and optimize subregion number, if it is made using first class catalogue
For virtual partition, the subdirectories at different levels of USB storage device are otherwise obtained by the way of scanning step by step and select catalogue number big
In or equal to optimize subregion number subdirectory as virtual partition.
4. the media library according to claim 3 based on USB storage device is established and update method, it is characterised in that described
Optimum partition number is according to the storage size of USB storage device and has been configured with storage size.
5. the media library according to claim 1 based on USB storage device is established and update method, it is characterised in that described
Step C1 judges whether the file in virtual partition meets the first Rule of judgment, second when being scanned to virtual partition
Rule of judgment and the 3rd Rule of judgment, it is file to be scanned that this document folder is marked if meeting, first Rule of judgment
Not include media file in file and its parent folder, second Rule of judgment is that the catalogue series of this document folder is big
In the first judgment value, the 3rd Rule of judgment is the difference of the number and sub-folder number of the non-media file in this document folder
Value is more than the second judgment value, and the method for solving of first judgment value includes：Media text in virtual partition where statistics file folder
Part number reduces most fast catalogue series, selects most deep catalogue series as the first judgment value；Second judgment value is text
The average value of the file number in the file of media file is not included in virtual partition where part folder.
6. the media library according to claim 5 based on USB storage device is established and update method, it is characterised in that described
Also include after step C1：
If the system that USB storage device is accessed is in idle condition, what is marked from media library in read step C1 treats
Scanning file folder is scanned, and after the end of scan, if media library has renewal, sends update notification.
7. the media library according to claim 2 based on USB storage device is established and update method, it is characterised in that described
The scanning of virtual partition is set according to the number of the last modification time and media file of file in virtual partition in step C2
The method of priority is：
First minor sort is carried out to the priority of virtual partition according to the number of media file；
According to the last modification time of file to carrying out the second minor sort to the priority of virtual partition, if there is finally repairing
Change time identical file, then determine the suitable of last modification time identical virtual partition according to the result of the first minor sort
Sequence.
8. the media library according to claim 7 based on USB storage device is established and update method, it is characterised in that described
It is to the method for priority the first minor sort of progress of virtual partition according to the number of media file：
Virtual partition more than video file number has high priority；If there is video file number identical virtual partition,
Then in video file number identical virtual partition, the virtual partition more than picture file number has high priority；If video
When file number, picture file number all same, then in the virtual partition of video file number, picture file number all same,
Virtual partition more than music file number has high priority.
9. the media library according to claim 1 based on USB storage device is established and update method, it is characterised in that described
Media file information includes title, path, size and the modification time of media file, and the folder information includes file
The number of the non-media file included in the media file number that is included in last modification time, file, file, file
Sub-folder in the number of media file that includes.
10. the media library based on USB storage device according to claim 1 or 5 or 7 or 8 or 9 is established and update method,
It is characterized in that the media file includes video file, music file and picture file.
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| CN105550195A (en) * | 2015-10-27 | 2016-05-04 | 深圳市美贝壳科技有限公司 | Method for rapidly reading and writing Android system media library data |
| CN107124438B (en) * | 2016-02-25 | 2020-02-28 | 杭州海康威视数字技术股份有限公司 | Method and device for dynamically accessing storage equipment in cloud storage system |
| CN106066861A (en) * | 2016-05-25 | 2016-11-02 | 努比亚技术有限公司 | File scanning device and method |
| CN107704307A (en) * | 2016-08-09 | 2018-02-16 | 中兴通讯股份有限公司 | A kind of management method, device and the terminal of virtual external storage |
| CN106599252A (en) * | 2016-12-20 | 2017-04-26 | 珠海市魅族科技有限公司 | Method and device for scanning storage equipment |
| CN107333178A (en) * | 2017-06-20 | 2017-11-07 | 帕诺迪电器（深圳）有限公司 | A kind of double USB management methods of set top box |
| CN107770265B (en) * | 2017-10-17 | 2019-08-23 | Oppo广东移动通信有限公司 | A kind of method of data synchronization, data synchronization unit and mobile terminal |
| CN110532402A (en) * | 2018-05-25 | 2019-12-03 | 合肥杰发科技有限公司 | Multimedia scan method, intelligent terminal and the device with store function |
| CN109542848B (en) * | 2018-11-07 | 2022-01-07 | 深圳市布谷鸟科技有限公司 | Vehicle-mounted media file rapid scanning method and system |
| CN111901685B (en) * | 2020-07-30 | 2023-09-08 | 深圳市康冠科技股份有限公司 | File scanning method and related device |
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| CN104778222A (en) | 2015-07-15 |
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