CN1901056A - Medium transcription control method and embedded system using said method - Google Patents
Medium transcription control method and embedded system using said method Download PDFInfo
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- CN1901056A CN1901056A CN 200510084093 CN200510084093A CN1901056A CN 1901056 A CN1901056 A CN 1901056A CN 200510084093 CN200510084093 CN 200510084093 CN 200510084093 A CN200510084093 A CN 200510084093A CN 1901056 A CN1901056 A CN 1901056A
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Abstract
The present invention relates to medium transferring control method and embedded system. The embedded system includes one medium reading device, one memory device and one transferring module. The medium transferring control method includes the first receiving transferring request; automatically copying data from one storing medium the medium reading device reads to the memory device as the response to the transferring request; and the transforming the medium data into some format with the transferring module. During transferring the medium data, the system resource occupied by the other modules in the embedded system is detected, so as to regulate the transferring load dynamically to avoid influence on the efficiency of the broadcast program. The medium transferring control method makes it possible for embedded system to execute the medium data transferring in background while broadcasting and copying in foreground simultaneously.
Description
Technical field
The invention relates to computer technology, particularly change relevant for media data.
Background technology
Quite popular at present music player can be play for example windows media audio (Windows Media Audio, abbreviation wma) file of form, animation expert group (MovingPictures Experts Group is called for short MPEG), the 3rd layer of audio format (being called for short mp3) or other form.Sound after overcompression or other media file data amount are all very little usually, can be stored in jumbo storage device, to replace multi-disc laser disc (compact disc is called for short CD).Therefore, had more and more music players with the real work of embedded system (embedded system) to be equipped with jumbo storage device, wherein most typical storage device is exactly hard disk (hard disk).
The process that is converted to mp3, wma or other compressed format by the raw data of CD is called transcribes (ripping).Transcribe and comprise from CD and go up reading of data, packed data and store packed data, need quite a lot of time of cost usually.Because the processor speed of embedded system is slower than the processor of personal computer usually, and main memory capacity is also less, carries out and transcribes more consuming time, therefore may influence the broadcast of music on embedded system.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of medium transcription control method that is executed in an embedded system.
To achieve these goals, the invention provides a kind of medium transcription control method, be executed in an embedded system, above-mentioned embedded system comprises that a medium reading device, a storage device, transcribe module, may further comprise the steps: receive one and transcribe request; From the Storage Media that above-mentioned medium reading device is read, duplicate media data automatically to above-mentioned storage device, to respond the above-mentioned request of transcribing; The above-mentioned module of transcribing is transcribed into a form with the above-mentioned media data in the said storage unit; During transcribing above-mentioned media data, shared system resource when detecting above-mentioned embedded system and being carried out by above-mentioned one or more module of transcribing outside the module; And according to the said system resource that detects with the transcribe load of dynamic adjustment to above-mentioned media data, transcribe employed system resource untapped system resource when being no more than above-mentioned one or more module and carrying out to keep above-mentioned media data, and then do not influence the usefulness of playing program.
Medium transcription control method provided by the invention, above-mentioned media data are voice data.
Medium transcription control method provided by the invention, above-mentioned dynamic adjustment step comprise according to the said system resource that detects to transcribe the number of data frames of above-mentioned media data in the dynamic adjustment time per unit.
Medium transcription control method provided by the invention, the said system resource that detects comprise processor utilization factor, and the buffer zone use information of direct memory access (DMA) at least a information.
Medium transcription control method provided by the invention, the resource utilization ratio grade of the said system resource correspondence that is detected comprise height, in and inferior grade, also comprise: when the buffer zone of the utilization factor of above-mentioned processor or above-mentioned direct memory access (DMA) used the above-mentioned high-grade condition of information conforms, it was corresponding above-mentioned high-grade then to differentiate the said system resource that is detected; And when working as the said system resource that is detected and not meeting above-mentioned high-grade condition, and when the utilization factor of above-mentioned processor or the buffer zone of above-mentioned direct memory access (DMA) use the condition of the above-mentioned middle grade of information conforms, then differentiate the corresponding above-mentioned middle grade of the said system resource that is detected; And work as the said system resource that is detected and do not meet high-grade and during the middle grade condition, then differentiate the corresponding above-mentioned inferior grade of the said system resource that is detected.
Medium transcription control method provided by the invention, corresponding above-mentioned when high-grade when the said system resource that detected, suspend transcribing of above-mentioned media data.
Medium transcription control method provided by the invention, above-mentioned one or more module comprises the media play module, in order to play above-mentioned media data.
Medium transcription control method provided by the invention also comprises: before transcribing above-mentioned media data, start above-mentioned media play module automatically to respond the above-mentioned request of transcribing; Or before transcribing above-mentioned media data, do not start above-mentioned media play module.
Medium transcription control method provided by the invention, when the processor utilization of above-mentioned media play module between 50%～100%, the consumption rate of the buffer zone of the direct memory access (DMA) of perhaps above-mentioned media play module is during less than the broadcast sampling rate of above-mentioned media play module, and it is corresponding above-mentioned high-grade to differentiate the system resource that above-mentioned media play module uses.
Medium transcription control method provided by the invention, above-mentioned one or more module comprise in order to duplicate of above-mentioned media data and duplicate module.
In order to realize purpose of the present invention, the invention provides a kind of embedded system, comprising: a medium reading device; One storage device; One operation module receives one and transcribes request; One duplicates module, from the Storage Media that above-mentioned medium reading device reads, duplicates media data automatically to above-mentioned storage device, to respond the above-mentioned request of transcribing; One transcribes module, and the above-mentioned media data in the said storage unit is transcribed into a form; An and resource detecting module, during transcribing above-mentioned media data, shared system resource when detecting above-mentioned embedded system and being carried out by above-mentioned one or more module of transcribing outside the module, wherein, above-mentioned transcribe module according to the said system resource that detects with the transcribe load of dynamic adjustment to above-mentioned media data, transcribe employed system resource untapped system resource when being no more than above-mentioned one or more module and carrying out to keep above-mentioned media data, and then do not influence the usefulness of playing program.
Embedded system provided by the invention, above-mentioned media data are voice data.
Embedded system provided by the invention, above-mentioned transcribe module according to the said system resource that detects to transcribe the number of data frames of above-mentioned media data in the dynamic adjustment time per unit.
Embedded system provided by the invention, the above-mentioned system resource that detects comprise processor utilization factor, and the buffer zone use information of direct memory access (DMA) at least a information.
Embedded system provided by the invention, the resource utilization ratio grade of the said system resource correspondence that is detected comprises height, in and inferior grade, when the buffer zone of the utilization factor of above-mentioned processor or above-mentioned direct memory access (DMA) uses the above-mentioned high-grade condition of information conforms, it is corresponding above-mentioned high-grade that then above-mentioned resource detecting module is differentiated the said system resource that is detected, when the said system resource that is detected does not meet above-mentioned high-grade condition, and when the utilization factor of above-mentioned processor or the buffer zone of above-mentioned direct memory access (DMA) use the condition of the above-mentioned middle grade of information conforms, then above-mentioned resource detecting module is differentiated the corresponding above-mentioned middle grade of the said system resource that is detected, and work as the said system resource that is detected and do not meet high-grade and during the middle grade condition, then above-mentioned resource detecting module is differentiated the corresponding above-mentioned inferior grade of the said system resource that is detected.
Embedded system provided by the invention, corresponding above-mentioned when high-grade when the said system resource that detected, the above-mentioned module of transcribing suspends and transcribes above-mentioned media data.
Embedded system provided by the invention, above-mentioned one or more module comprises the media play module, in order to play above-mentioned media data.
Embedded system provided by the invention also comprises: before transcribing above-mentioned media data, above-mentioned media play module starts automatically to respond the above-mentioned request of transcribing; Or before transcribing above-mentioned media data, do not start above-mentioned media play module.
Embedded system provided by the invention, when the processor utilization of above-mentioned media play module between 50%～100%, the consumption rate of the buffer zone of the direct memory access (DMA) of perhaps above-mentioned media play module is during less than the broadcast sampling rate of above-mentioned media play module, and it is corresponding above-mentioned high-grade to differentiate the system resource that above-mentioned media play module uses.
Embedded system provided by the invention, above-mentioned embedded system are an acoustics.
Use this medium transcription control method can allow on the embedded system media data transcribe operation and carry out on the backstage, and media play and be replicated in the foreground and carry out, and then media play is not postponed because of transcribing.
Description of drawings
Fig. 1 is the structure calcspar of an embedded system embodiment;
Fig. 2 is the process flow diagram of medium transcription control method embodiment;
Fig. 3 is a real Storage Media of making medium transcription control method.
Embodiment
The embedded system of a kind of medium transcription control method and use the method is below proposed.
A kind of medium transcription control method is executed in embedded system 20.Embedded system 20 can be a stereo set (jukebox), other music player or other multimedia playing apparatus, and processor 1 wherein can be the ARM9TDMI processor; Medium reading device 10 can be a CD-ROM device; Storage device 9 can be a hard disk.Storage Media 11 can be a CD-RW discsCD-RW, the Storage Media data, and read by medium reading device 10.Above-mentioned media data is an example with a music data, but non-as limit.Operation module 8 is the operation interface of embedded system 20.Duplicate module 7 in order to the data of duplicating medium reading device 10 and reading to storage device 9.Media play module 6 is in order to playing media data.Above-mentioned each module can computer program or the real work of circuit.
With reference to Fig. 2 above-mentioned medium transcription control method embodiment is described.
Operation module 8 receives Storage Media 11 middle pitch melody purposes selected, as step S2, and receives one subsequently and transcribes request, as step S4.Above-mentioned selected music track can be the part or all of song in the Storage Media 11.
Then duplicating module 7 duplicates via above-mentioned media data from the Storage Media 11 that medium reading device 10 reads automatically to storage device 9, to respond the above-mentioned request of transcribing, as step S6.Media play module 6 starts automatically and plays above-mentioned selected song to respond the above-mentioned request of transcribing, as step S81; Or media play module 6 do not start above-mentioned media play module, as step S82.
Transcribe module 5 and automatically the media data of the above-mentioned selected song in the said storage unit is converted to a form according to the above-mentioned request of transcribing, for example mp3, wma or other compressed format are as step S10.
During the above-mentioned media data of conversion, module (comprise media play module 6, duplicate module 7 and the operation module 8) system resource of shared embedded system 20 when carrying out outside the module 5 is transcribed in 4 detectings of resource detecting module, as step S12, differentiate the usage factor of system resource information that is detected, as step S14, and above-mentioned utilization factor information passed to transcribe module 5.
For instance, the said system resource comprises two main resources, is respectively: the utilization factor of processor 1, and the utilization factor of direct memory access (DMA) (Direct Memory Access, be called for short DMA) buffer zone 3.In addition, resource detecting module 4 is calculated the resource utilization ratio information that is detected, and is divided into several grades.Below the tabulation lattice illustrate Three Estate (the 2nd～4 hurdles of the 1st row) and each condition (the 2nd～3 row) of the conduct demonstration of embedded system example.
Form 1
| The resource utilization ratio grade | High | In | Low |
| Processor utilization | 50％～100％ | 20％～50％ | 0％～20％ |
| The utilization factor of DMA buffer zone | Consumption rate＜the sampling rate of DMA buffer zone | Consumption rate＞the sampling rate of DMA buffer zone |
When media play module 6, duplicate module 7 and operation module 8 use embedded systems 20 above-mentioned two main resources the above-mentioned high usage grade of utilization factor information conforms condition one of them the time, resource detecting module 4 is differentiated and is play modules 6, duplicates the resource utilization ratio grade of module 7 and operation module 8 for high.In other words, when the processor utilization of above-mentioned three modules between 50%～100%, perhaps the consumption rate of the DMA buffer zone of media play module 6 is when playing sampling rate, and resource detecting module 4 is differentiated and play modules 6, duplicates the resource utilization ratio grade of module 7 and operation module 8 for high.Otherwise, when media play module 6, duplicate module 7 and operation module 8 use the utilization factor information conforms of above-mentioned two main resources of embedded systems 20 above-mentioned in the utilization factor grade condition one of them the time, resource detecting module 4 is differentiated during the resource utilization ratio grade of playing modules 6, duplicating module 7 and operation module 8 is.
When media play module 6, when duplicating module 7 and operation module 8 and using the resource utilization ratio grade of embedded systems 20 not belong to high-grade and middle grade, it is low that resource detecting module 4 is differentiated the resource utilization ratio grade of playing modules 6, duplicating module 7 and operation module 8.
Transcribe module 5 and differentiate the above-mentioned usage factor of system resource information that detects, as step S16, and according to the above-mentioned usage factor of system resource information that detects with transcribe load (the media data amount of for example transcribing of dynamic adjustment to above-mentioned media data, Frame number for example), transcribe to keep that module 5 employed system resource when transcribing above-mentioned media data is no more than media play module 6, untapped system resource when duplicating module 7 and operation module 8 and carrying out.For example, transcribe module 5 and use the utilization factor of processors 1 to keep less than 50% when playing module 6, duplicating utilization factor that module 7 and operation module 8 use processors 1 between 20%～50% the time.Form 2 illustrates above-mentioned institute detecting system resource load and transcribes the relation of transcribing operation of module 5.
Form 2
| The resource utilization ratio grade | High | In | Low |
| Transcribe the operation of transcribing of module 5 | Time-out is transcribed, and vacates the DMA buffer zone | Transcribe load normally, and use the suitably DMA buffer zone of size | Maximum transcribe load, and use maximum DMA buffer zone |
Transcribing module 5 can be according to the utilization factor information of the said system resource that detects to transcribe the number of data frames of above-mentioned media data in the dynamic adjustment time per unit.When the said system resource utilization grade that is detected when being high-grade, transcribe module 5 and suspend and transcribe, and vacate the DMA buffer zone, as step S18.When the said system resource utilization grade that is detected is middle grade, transcribes module 5 processing and transcribe load normally, and use the suitably DMA buffer zone of size, as step S20.When the said system resource utilization grade that is detected is inferior grade, transcribes module 5 and handle the maximum load of transcribing, and use maximum DMA buffer zone, as step S22.
Transcribe module 5 and differentiate to transcribe and whether finish, as step S24.In this way, then stop transcribing module 5, as step S26.As not, then get back to step S12.
Above-mentioned each module can the real work of computer program mode.As shown in Figure 3, the storer 30 of embedded system 40 comprises system space and user space.System space comprises an operating system 31, and resource detecting module 34 can be a module of operating system 31.The user space comprises a main program 39, also responds immediately in order to receive operation, and comprises media play module 36, duplicates module 37 and operate module 38.Resource detecting module 34, transcribe module 35, media play module 36, duplicate module 37 and operation module 38 and instruct embedded system 40 to carry out as resource detecting module 4, transcribe module 5, media play module 6, duplicate module 7 and operate the performed above-mentioned steps of module 8 respectively, and can be stored in other Storage Media.
Therefore, above-mentioned medium transcription control method can allow on the embedded system media data transcribe operation and carry out on the backstage, and media play and be replicated in the foreground and carry out, and then media play is not postponed because of transcribing.
The above only is preferred embodiment of the present invention; so it is not in order to limit scope of the present invention; any personnel that are familiar with this technology; without departing from the spirit and scope of the present invention; can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
Being simply described as follows of symbol in the accompanying drawing:
1: processor
The 3:DMA buffer zone
4: resource detecting module
5: transcribe module
6: the media play module
7: duplicate module
8: the operation module
9: store module
10: the medium reading device
11: Storage Media
20: embedded system
30: storer
31: operating system
34: resource detecting module
35: transcribe module
36: the media play module
37: duplicate module
38: the operation module
39: main program
40: embedded system
Claims (20)
1, a kind of medium transcription control method is characterized in that being executed in an embedded system, and above-mentioned embedded system comprises that a medium reading device, a storage device, transcribe module, may further comprise the steps:
Receive one and transcribe request;
From the Storage Media that above-mentioned medium reading device is read, duplicate media data automatically to above-mentioned storage device, to respond the above-mentioned request of transcribing;
The above-mentioned module of transcribing is transcribed into a form with the above-mentioned media data in the said storage unit;
During transcribing above-mentioned media data, shared system resource when detecting above-mentioned embedded system and being carried out by above-mentioned one or more module of transcribing outside the module; And
According to the said system resource that detects with the transcribe load of dynamic adjustment to above-mentioned media data, transcribe employed system resource untapped system resource when being no more than above-mentioned one or more module and carrying out to keep above-mentioned media data, and then do not influence the usefulness of playing program.
2, medium transcription control method according to claim 1 is characterized in that: above-mentioned media data is a voice data.
3, medium transcription control method according to claim 2 is characterized in that: above-mentioned dynamic adjustment step comprises according to the said system resource that detects to transcribe the number of data frames of above-mentioned media data in the dynamic adjustment time per unit.
4, medium transcription control method according to claim 3 is characterized in that: the said system resource that detects comprises at least a information in the buffer zone use information of the utilization factor of processor and direct memory access (DMA).
5, medium transcription control method according to claim 4, the resource utilization ratio grade that it is characterized in that the said system resource correspondence that detected comprise height, in and inferior grade, also comprise:
When the buffer zone of the utilization factor of above-mentioned processor or above-mentioned direct memory access (DMA) used the above-mentioned high-grade condition of information conforms, it was corresponding above-mentioned high-grade then to differentiate the said system resource that is detected; And
When the said system resource that is detected does not meet above-mentioned high-grade condition, and when the utilization factor of above-mentioned processor or the buffer zone of above-mentioned direct memory access (DMA) use the condition of the above-mentioned middle grade of information conforms, then differentiate the corresponding above-mentioned middle grade of the said system resource that is detected; And
When the said system resource that is detected does not meet high-grade and during the middle grade condition, then differentiates the corresponding above-mentioned inferior grade of the said system resource that is detected.
6, medium transcription control method according to claim 5 is characterized in that: corresponding above-mentioned when high-grade when the said system resource that detected, suspend transcribing of above-mentioned media data.
7, medium transcription control method according to claim 6 is characterized in that: above-mentioned one or more module comprises the media play module, in order to play above-mentioned media data.
8, medium transcription control method according to claim 7 is characterized in that also comprising:
Before transcribing above-mentioned media data, start above-mentioned media play module automatically to respond the above-mentioned request of transcribing; Or before transcribing above-mentioned media data, do not start above-mentioned media play module.
9, medium transcription control method according to claim 8, it is characterized in that: when the processor utilization of above-mentioned media play module between 50%～100%, the consumption rate of the buffer zone of the direct memory access (DMA) of perhaps above-mentioned media play module is during less than the broadcast sampling rate of above-mentioned media play module, and it is corresponding above-mentioned high-grade to differentiate the system resource that above-mentioned media play module uses.
10, medium transcription control method according to claim 8 is characterized in that: above-mentioned one or more module comprises in order to duplicate of above-mentioned media data and duplicates module.
11, a kind of embedded system is characterized in that comprising:
One medium reading device;
One storage device;
One operation module receives one and transcribes request;
One duplicates module, from the Storage Media that above-mentioned medium reading device reads, duplicates media data automatically to above-mentioned storage device, to respond the above-mentioned request of transcribing;
One transcribes module, and the above-mentioned media data in the said storage unit is transcribed into a form; And
One resource detecting module, during transcribing above-mentioned media data, shared system resource when detecting above-mentioned embedded system and being carried out by above-mentioned one or more module of transcribing outside the module, wherein, above-mentioned transcribe module according to the said system resource that detects with the transcribe load of dynamic adjustment to above-mentioned media data, transcribe employed system resource untapped system resource when being no more than above-mentioned one or more module and carrying out to keep above-mentioned media data, and then do not influence the usefulness of playing program.
12, embedded system according to claim 11 is characterized in that: above-mentioned media data is a voice data.
13, embedded system according to claim 12 is characterized in that: above-mentioned transcribe module according to the said system resource that detects to transcribe the number of data frames of above-mentioned media data in the dynamic adjustment time per unit.
14, embedded system according to claim 13 is characterized in that: the above-mentioned system resource that detects comprises at least a information in the buffer zone use information of the utilization factor of processor and direct memory access (DMA).
15, embedded system according to claim 14, it is characterized in that: the resource utilization ratio grade of the said system resource correspondence that is detected comprises height, in and inferior grade, when the buffer zone of the utilization factor of above-mentioned processor or above-mentioned direct memory access (DMA) uses the above-mentioned high-grade condition of information conforms, it is corresponding above-mentioned high-grade that then above-mentioned resource detecting module is differentiated the said system resource that is detected, when the said system resource that is detected does not meet above-mentioned high-grade condition, and when the utilization factor of above-mentioned processor or the buffer zone of above-mentioned direct memory access (DMA) use the condition of the above-mentioned middle grade of information conforms, then above-mentioned resource detecting module is differentiated the corresponding above-mentioned middle grade of the said system resource that is detected, and work as the said system resource that is detected and do not meet high-grade and during the middle grade condition, then above-mentioned resource detecting module is differentiated the corresponding above-mentioned inferior grade of the said system resource that is detected.
16, embedded system according to claim 15 is characterized in that: corresponding above-mentioned when high-grade when the said system resource that detected, the above-mentioned module of transcribing suspends and transcribes above-mentioned media data.
17, embedded system according to claim 16 is characterized in that: above-mentioned one or more module comprises the media play module, in order to play above-mentioned media data.
18, embedded system according to claim 17 is characterized in that also comprising:
Before transcribing above-mentioned media data, above-mentioned media play module starts automatically to respond the above-mentioned request of transcribing; Or before transcribing above-mentioned media data, do not start above-mentioned media play module.
19, embedded system according to claim 18, it is characterized in that: when the processor utilization of above-mentioned media play module between 50%～100%, the consumption rate of the buffer zone of the direct memory access (DMA) of perhaps above-mentioned media play module is during less than the broadcast sampling rate of above-mentioned media play module, and it is corresponding above-mentioned high-grade to differentiate the system resource that above-mentioned media play module uses.
20, embedded system according to claim 18 is characterized in that: above-mentioned embedded system is an acoustics.
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| US9533100B2 (en) | 2009-06-01 | 2017-01-03 | Sanofi-Aventis Deutschland Gmbh | Dose setting mechanism for priming a drug delivery device |
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| CN1183779C (en) * | 1999-10-21 | 2005-01-05 | 皇家菲利浦电子有限公司 | Playback apparatus and method for playback of record carrier |
| KR100372092B1 (en) * | 2001-02-06 | 2003-02-14 | 주식회사 우리기술 | Medium Player for playing moving picture on the background of the screen and The Processing Method for moving picture for using it and A computer-readable Storage Medium for executing the above Medium Player or Method |
| JP2004348437A (en) * | 2003-05-22 | 2004-12-09 | Matsushita Electric Ind Co Ltd | Resource management device, resource management method and recording medium |
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| US9533100B2 (en) | 2009-06-01 | 2017-01-03 | Sanofi-Aventis Deutschland Gmbh | Dose setting mechanism for priming a drug delivery device |
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