CN109542848B - Vehicle-mounted media file rapid scanning method and system - Google Patents
Vehicle-mounted media file rapid scanning method and system Download PDFInfo
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Abstract
The invention discloses a method for rapidly scanning a vehicle-mounted media file, which comprises the following steps: acquiring a mounting path of mounting equipment and creating a scanning thread unit; judging whether the mounting path exists in a legal path set or not, and if not, destroying the scanning thread unit; when the routing exists in the legal path set, inquiring whether the mounting path exists in the statistical path set, and if so, reading the statistical path for preferential scanning; if not, identifying the weight of the mounting path; and scanning the files one by one in order according to the weight assigned by the mounting path. The invention also discloses a vehicle-mounted media file rapid scanning system. The invention preferentially scans the directory with more media files by using the technical means of vehicle-mounted media file data discrimination, filtering and screening, media information storage and the like, thereby achieving the beneficial effect of rapidly scanning the media files.
Description
Technical Field
The present invention relates to the field of vehicle-mounted media data processing, and more particularly, to a method and system for rapidly scanning a vehicle-mounted media file.
Background
With the rapid development of the automotive electronics industry, the vehicle-mounted terminal system is more and more favored and valued by people, the functions of the vehicle-mounted terminal system are more and more abundant, particularly, the vehicle-mounted media system can bring joyful and comfortable riding experience to people, most of the existing vehicle-mounted media systems are developed based on the android operating system of google corporation, almost no music or video files are carried when leaving the factory, a user needs to access or insert multimedia media (such as a U disk and a memory card) to read media files through mobile phone Bluetooth, the android system generally adopts a single thread to carry out recursive scanning and analysis operation on each file of an external SD card, an EMMC (internal SD card), a USB device and the like, the traditional scanning mode of traversing the files in the root directory by the depth-first search algorithm causes great resource waste of the system, and the speed of reading and scanning the media files by the vehicle-mounted media system is very slow. Since the in-vehicle media system differs from the traditional android system in several ways, for example: in the aspect of file types, compared with the traditional android system, the vehicle-mounted media system has better pertinence to the file types, the main file objects are media files instead of all various files of different types, and multi-path scanning of the full-disk full files is not needed; in the aspect of configuration strategies, compared with the traditional android system, the vehicle-mounted media system can be optimized and simplified, redundant management and configuration are not needed, and the working efficiency of the vehicle-mounted media system is seriously influenced by the redundant strategies. The existing vehicle-mounted media system adopting the traditional android system has no targeted optimization and improvement on the problems, so that a large amount of repeated scanning work is required in the process of loading the media file, the scanning quality and the scanning speed are low, and the user requirements of a vehicle driver and a passenger on efficient scanning processing and faster use of the vehicle-mounted media system after pursuing media file access cannot be met.
Disclosure of Invention
The present invention aims to provide a method and a system for rapidly scanning a vehicle-mounted media file, which are directed to the above-mentioned deficiencies of the prior art.
The technical scheme of the invention is realized as follows:
a quick scanning method for vehicle-mounted media files comprises the following steps:
acquiring a mounting path of mounting equipment and creating a scanning thread unit;
judging whether the mounting path exists in a legal path set or not, and if not, destroying the scanning thread unit;
when the routing exists in the legal path set, inquiring whether the mounting path exists in the statistical path set, and if so, preferentially scanning; if not, identifying the weight of the mounting path;
and scanning the files one by one in order according to the weight assigned by the mounting path.
Preferably, the method further comprises the following steps:
when the mounting path is not inquired to exist in the statistical path set, whether the media files exist in the directory under the mounting path is judged, and the media file quantity weight statistics is carried out on the directory with the media files under the mounting path;
filtering directories without media files;
and sorting the directory paths according to the weight statistical result.
Preferably, the method further comprises the following steps:
scanning the files one by one in order according to the weight assigned by the mounting path, judging whether the files under the mounting path are identifiable playing files or not, and if not, filtering the path of the unidentifiable files;
when the file under the mounting path is an identifiable playing file, analyzing the media information of the file;
storing the analyzed media file into a database for the media program to obtain and use;
and after the storage is finished, periodically counting the files in the database, and storing the counting result to a counting path set.
Preferably, a mount path of the mount device is acquired, and an analysis thread unit and a scan thread unit are created.
Preferably, the legal path set is a preset mounted device path or a default external USB path of the system.
An in-vehicle media file fast scanning system, comprising:
the mounting monitor is used for detecting the access of the mounting equipment;
a scanning state machine for monitoring and adjusting the state of the media file scanning program;
the scanning thread unit is used for scanning the file;
the media scanning state monitoring interface is used for receiving the mounting path directory information on the scanning mounting equipment;
the database is used for storing user configuration files, media information, legal path set data and statistical path set data;
the background service unit is used for sending the scanning state to the media application and/or sending the control information of the media application to the scanning state machine;
the media application unit is used for acquiring the scanning state of the media files and inquiring the information of the media files on the database;
the media application unit is connected with the background service unit, the scanning state machine is respectively connected with the mount monitor and the background service unit, the background service unit is connected with the media scanning state monitoring interface, the scanning thread unit is connected with the database, and the scanning thread unit is connected with the scanning state machine.
Preferably, the method further comprises the following steps:
the analysis thread unit is used for analyzing the detailed information of the file information when the media file is scanned;
a transmission scanning state interface for transmitting the scanning state of the media file;
the media analysis monitoring interface is used for receiving the analyzed file information transmitted by the analysis thread unit;
the media application unit is connected with the background service unit through the transmission scanning state interface, the media analysis monitoring interface is respectively connected with the background service unit and the analysis thread unit, the analysis thread unit is connected with the media scanning state monitoring interface, the analysis thread unit is connected with the database, and the analysis thread unit is connected with the scanning state machine.
Preferably, the media application unit may be a media playing APP and provide a user interface, where the interface includes a media information display and a file scanning status display.
The inventor of the invention finds that in the prior art, a vehicle-mounted media system adopting the traditional android system needs a complicated scanning strategy in the process of loading a media file, repeated scanning work is carried out, the scanning quality and the scanning speed are low, the smooth use of a user is greatly hindered, and the user experience is influenced. Therefore, the technical task to be achieved or the technical problems to be solved by the present invention are never thought or anticipated by those skilled in the art, and therefore the present invention is a new technical solution.
Drawings
The invention will be further described in detail with reference to examples of embodiments shown in the drawings to which, however, the invention is not restricted.
FIG. 1 is a schematic diagram illustrating steps of a first embodiment of a method for fast scanning of a vehicle-mounted media file;
FIG. 2 is a schematic diagram illustrating steps of a second embodiment of a method for fast scanning of vehicle media files;
FIG. 3 is a block diagram of a first embodiment of an in-vehicle media file rapid scanning system;
FIG. 4 is a block diagram of a second embodiment of an in-vehicle media file rapid scanning system;
in the figure: 1. mounting a listener; 2. scanning a state machine; 3. a scan thread unit; 4. a media scanning status monitoring interface; 5. a database; 6. a background service unit; 7. a media application unit; 8. analyzing a thread unit; 9. a transfer scan status interface; 10. and a media analysis monitoring interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Referring to fig. 1, a first embodiment of a method for fast scanning a vehicle-mounted media file is introduced, which includes the following steps:
s101, acquiring a mounting path of mounting equipment, creating a scanning thread unit 3, and informing a program to create the scanning thread unit 3 when an external equipment mounting monitor 1 in a vehicle-mounted media system detects that external equipment is mounted;
s102, the scanning thread unit 3 judges whether the mounting path exists in a legal path set or not, and if not, the scanning thread unit 3 is destroyed by the process;
s103, when the legal path set exists, inquiring whether the current mounting path exists in a statistical path set, wherein the statistical path set can be a path statistical configuration file, path statistical data stored in a database 5 or a data set temporarily stored in an analysis thread unit 8, and if the statistical path set exists, scanning is preferentially carried out; if not, identifying the weight of the mounting path, identifying the weight with the depth of 3 levels, namely performing breadth search on the 3 levels below the directory, judging whether a file suffix is a media type, judging the possibility of containing the media files in the folder according to the name of the folder, and respectively assigning the weights;
s104, carrying out ordered depth-first scanning according to the weight assigned by the mounting path, sequencing the paths assigned with the weight from high to low, reading the filtering configuration file, removing the paths which do not need to be scanned, and forming the ordered paths which need to be scanned finally.
And after the scanning is finished, destroying the scanning thread unit 3 so as to be directly used in the next scanning.
Referring to fig. 2, a second embodiment of a fast scanning method for a vehicle-mounted media file is introduced, and compared with the first embodiment, the second embodiment further includes the following steps:
s101, acquiring a mounting path of mounting equipment, creating a scanning thread unit 3, and informing a program to simultaneously create an analysis thread unit 8 and the scanning thread unit 3 when an external equipment mounting monitor 1 in a vehicle-mounted media system detects that external equipment is mounted;
s102, the scanning thread unit 3 judges whether a mounting path exists in a legal path set or not, if not, the scanning thread unit 3 is destroyed by a process, and the legal path set is a preset mounting equipment path or a default external USB path of a system;
s103, when the legal path set exists, inquiring whether the current mounting path exists in a statistical path set, wherein the statistical path set can be a path statistical configuration file, path statistical data stored in a database 5 or a data set temporarily stored in an analysis thread unit 8, and if the statistical path set exists, scanning is preferentially carried out;
s1031, when the mounting path is not inquired to exist in the statistical path set, judging whether the directory under the mounting path has the media file, carrying out media file quantity weight statistics on the directory with the media file under the mounting path, adopting weight identification with the depth of 3 levels, namely carrying out breadth search on the 3 levels under the directory, judging whether a file suffix is a media type, judging the possibility of containing the media file in the folder according to the name of the folder, and respectively endowing the possibility of containing the media file with the weight;
s1032, filtering out directories without media files so as to avoid wasting scanning resources;
s1033, sorting the directory paths according to the weight statistical result;
s104, orderly scanning the files one by one according to the weight assigned by the mounting path, carrying out scanning in a sequence from high to low on the path assigned with the weight, carrying out scanning depth-first search one by one according to the sequence of the scanning depth-first search, scanning each file, wherein the efficiency is lower if the depth is first, judging whether the file under the mounting path is a recognizable playing file, and filtering the path of the unrecognizable file if the file under the mounting path is not the recognizable playing file to form the final ordered path needing to be scanned;
s105, when the files under the mounting path are identifiable playing files, media information analysis is carried out on the files, the scanning result of each file is notified to a media application unit 7 interface UI and the files are analyzed, at the moment, a user can see simple information, detailed media information can be seen after the analysis is finished, the media information is divided into two parts, namely the simple information and detailed information, the simple information only comprises file names, sizes and paths, and the detailed information comprises the simple information and all information of one media file such as song albums, authors, singers, album covers and cover thumbnails;
s106, storing the analyzed media file into the database 5 for the media program to obtain and use;
and S107, after the storage is finished, periodically counting the files in the database 5 to obtain the top n directories with the maximum number of the media files, wherein the number of the directories can be determined by a user, and the counting result is stored in a counting path set so as to be directly read during the next scanning and accurately position the directory where the media files are located.
After the scanning is finished, the scanning thread unit 3 is destroyed, and the analysis thread unit 8 keeps running so as to be directly used in the next scanning.
The media information is divided into simple information and detailed information, the simple information can be displayed to a user after being acquired, the detailed information is gradually supplemented and then displayed to the user, the speed of scanning the simple information is very high, but the speed of analyzing the detailed information is low, the method can split the media information, and after the simple information is scanned by the scanning thread unit 3, the media application can be quickly informed to display a media file list and display the media file list to the user; meanwhile, the directory which does not need to be scanned is configured and filtered through the legal path set, and the possibility of existence or media files is judged by calculating the weight of the directory or the files, so that the purpose of preferentially scanning the directory is achieved.
A first embodiment of a fast scanning system for vehicle media files is introduced as shown in fig. 3, which comprises the following units:
a mount monitor 1(DeviceMountListener) for detecting the access of a mount device and transmitting the media information of the mount device to a scan state machine 2, wherein the mount device includes a usb disk, a mobile hard disk, a memory card, an SD card, a mobile communication terminal, etc.;
the scan state machine 2 (exdeviceservicestatemechine) is a state machine of the media scan program, and is used for monitoring and adjusting the state of the media file scan program, such as adjusting picture priority, music priority, video priority, foreground scan, background scan, etc.;
a scanning thread unit 3(ScanMediaThread) for activating the thread when a media file is scanned and analyzing the detailed information of the file;
a media scanning status monitoring interface 4 (imedianstorechangelistener) for receiving the information of the mounting path directory on the scanning mounting device;
a database 5(mediastore db) for storing user profiles, media information, legal path set data and statistical path set data, said legal path set data being taken from said scanning thread unit 3;
the background service unit 6(ExDeviceService) is a background service of the media scanning program and is responsible for sending the scanning state to the media application unit 7(MediaAPP) and/or sending the control information of the media application unit 7 to the scanning state machine 2;
the media application unit 7 is used for acquiring the scanning state of the media files and inquiring the information of the media files on the database; the media application unit 7 is an upper-layer media application of the android system, may also be an APP with a media playing function, and may provide a user interface ui (user interface), where the interface includes media information display and file scanning state display, the media application unit 7 receives the media scanning state from the background service unit 6, and queries the media information by using the query database 5.
The media application unit 7 is connected with the background service unit 6, the scanning state machine 2 is respectively connected with the mount monitor 1 and the background service unit 6, the background service unit 6 is connected with the media scanning state monitoring interface 4, the background service unit 6 can receive information sent from the media scanning state monitoring interface 4, the scanning thread unit 3 is connected with the media scanning state monitoring interface 4, the media scanning state monitoring interface 4 is used for receiving mount equipment directory information scanned by the scanning thread unit 3, the scanning thread unit 3 is connected with the database 5, and stores analyzed legal path set data into the database 5 and informs the background service unit 6 through the media scanning state monitoring interface 4, the scanning thread unit 3 is connected with the scanning state machine 2, the media application unit 7 and the scanning thread unit 3 adopt android aid l communication (bidirectional communication) to complete information synchronization between processes, and the scanning thread unit 3 is controlled by the scanning state machine 2.
A second embodiment of the rapid scanning system for vehicle-mounted media files is introduced as shown in fig. 4, which further includes the following units compared with the first embodiment:
an analysis thread unit 8 (obtainedmediainfothread) for analyzing the detailed information of the file information when the media file is scanned;
the delivery scan state interface 9(ExDeviceClient), is a set of interfaces given by the background service unit 6(ExDeviceService) through which the media scan state can be better delivered to the media application unit 7.
A media parsing monitoring interface 10(imedia storechangelistener) for transmitting parsed file information when receiving the parsed file information from the parsing thread unit 8;
the media application unit 7 is connected with the background service unit 6 through the transmission scanning state interface 9, the media analysis monitoring interface 10 is respectively connected with the background service unit 6 and the analysis thread unit 8, receives the file information after analysis transmitted by the analysis thread unit 8 and transmits the information to the background service unit 6, the analysis thread unit 8 is connected with the media scanning state monitoring interface 4, the analysis thread unit 8 can receive the information sent from the media scanning state monitoring interface 4, the analysis thread unit 8 is connected with the database 5, the analysis thread unit 8 is connected with the scanning state machine 2, stores the analyzed media information and the statistic path set data into the database 5 and informs the background service unit 6 through the media analysis monitoring interface 10, the resolution thread unit 8 is controlled by the scan state machine 2.
The present invention may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied therewith for causing a processor to implement various aspects of the present invention. It is well known to those skilled in the art that the present invention can be realized by hardware, by software, and by a combination of software and hardware, and the realization in any way is within the scope of the present invention.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (8)
1. A method for rapidly scanning vehicle-mounted media files is characterized by comprising the following steps:
acquiring a mounting path of mounting equipment and creating a scanning thread unit;
judging whether the mounting path exists in a legal path set or not, and if not, destroying the scanning thread unit;
when the routing exists in the legal path set, inquiring whether the mounting path exists in the statistical path set, and if so, reading the statistical path for preferential scanning; if not, identifying the weight of the mounting path;
and scanning the files one by one in order according to the weight assigned by the mounting path.
2. The method for rapidly scanning the vehicle-mounted media file according to claim 1, further comprising the following steps:
when the mounting path is not inquired to exist in the statistical path set, whether the media files exist in the directory under the mounting path is judged, and the media file quantity weight statistics is carried out on the directory with the media files under the mounting path;
filtering directories without media files;
and sorting the directory paths according to the weight statistical result.
3. The method for rapidly scanning the vehicle-mounted media file according to claim 1, further comprising the following steps:
scanning the files one by one in order according to the weight assigned by the mounting path, judging whether the files under the mounting path are identifiable playing files or not, and if not, filtering the path of the unidentifiable files;
when the file under the mounting path is an identifiable playing file, analyzing the media information of the file;
storing the analyzed media file into a database for the media program to obtain and use;
and after the storage is finished, periodically counting the files in the database, and storing the counting result to a counting path set.
4. The method for rapidly scanning the vehicle-mounted media file according to claim 1, wherein a mounting path of a mounting device is obtained, and an analysis thread unit and a scanning thread unit are created.
5. The method according to claim 1, wherein the legal path set is a preset on-board device path or a default external USB path.
6. A system for rapid scanning of media files in a vehicle, comprising:
the mounting monitor is used for detecting the access of the mounting equipment;
a scanning state machine for monitoring and adjusting the state of the media file scanning program;
the scanning thread unit is used for scanning the file;
the media scanning state monitoring interface is used for receiving the mounting path directory information on the scanning mounting equipment;
the database is used for storing user configuration files, media information, legal path set data and statistical path set data;
the background service unit is used for sending the scanning state to the media application and/or sending the control information of the media application to the scanning state machine;
the media application unit is used for acquiring the scanning state of the media files and inquiring the information of the media files on the database;
the media application unit is connected with the background service unit, the scanning state machine is respectively connected with the mount monitor and the background service unit, the background service unit is connected with the media scanning state monitoring interface, the scanning thread unit is connected with the database, and the scanning thread unit is connected with the scanning state machine.
7. The system of claim 6, further comprising:
the analysis thread unit is used for analyzing the detailed information of the file information when the media file is scanned;
a transmission scanning state interface for transmitting the scanning state of the media file;
the media analysis monitoring interface is used for receiving the analyzed file information transmitted by the analysis thread unit;
the media application unit is connected with the background service unit through the transmission scanning state interface, the media analysis monitoring interface is respectively connected with the background service unit and the analysis thread unit, the analysis thread unit is connected with the media scanning state monitoring interface, the analysis thread unit is connected with the database, and the analysis thread unit is connected with the scanning state machine.
8. The system of claim 6, wherein the media application unit is capable of playing APP for media and providing a user interface, and the interface includes a media information display and a file scanning status display.
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| CN110188211B (en) * | 2019-04-25 | 2023-06-27 | 深圳市布谷鸟科技有限公司 | Method for rapidly loading multimedia application list in android vehicle-mounted system |
| CN112527737B (en) * | 2020-12-21 | 2022-06-17 | 武汉光庭信息技术股份有限公司 | Vehicle-mounted media file scanning method, transmission method and system |
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