CN107018465A - Suitable for the gapless way of recording of Android system - Google Patents
Suitable for the gapless way of recording of Android system Download PDFInfo
- Publication number
- CN107018465A CN107018465A CN201610056355.1A CN201610056355A CN107018465A CN 107018465 A CN107018465 A CN 107018465A CN 201610056355 A CN201610056355 A CN 201610056355A CN 107018465 A CN107018465 A CN 107018465A
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- China
- Prior art keywords
- driver
- audio
- intelligent apparatus
- external microphone
- microphone
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/10537—Audio or video recording
- G11B2020/10546—Audio or video recording specifically adapted for audio data
- G11B2020/10555—Audio or video recording specifically adapted for audio data wherein the frequency, the amplitude, or other characteristics of the audio signal is taken into account
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The present invention provides a kind of gapless way of recording suitable for Android system, and the Android system is installed on intelligent apparatus, and the intelligent apparatus has built-in microphone, and the gapless way of recording is used for the process that intelligent apparatus is recorded, and the method includes：The driver of intelligent apparatus judges whether intelligent apparatus has inserted External microphone；When driver judges that intelligent apparatus has inserted External microphone, driver postpones audio path switching to External microphone by built-in microphone according to control command；The driver of intelligent apparatus judges whether intelligent apparatus has pulled out External microphone；And when driver judges that intelligent apparatus has pulled out External microphone, audio path is switched to built-in microphone by driver by External microphone immediately.Therefore, the effect of gapless recording is reached.
Description
Technical field
The present invention is related to a kind of gapless way of recording, and particularly a kind of suitable for Android system
The gapless way of recording.
Background technology
Fig. 1 is refer to, Fig. 1 is that traditional Android (Android) system architecture controls and managed showing for recording
It is intended to.Intelligent apparatus (smart device) can be referred to as by installing the device of Android system, such as intelligent hand
Hold device.Common intelligent handhold device such as smart mobile phone, tablet personal computer.Android system is by ccf layer
(framework) 100, hardware abstraction layer (Hardware Abstraction Layer, HAL) 200 and core
Layer (Kernel) 300 construction.When applied to recording, audio A U source is probably built-in wheat
Gram wind either external microphone.When External microphone is plugged, often causing what recording was interrupted
Problem.
Specifically, the design according to Android system, driver (driver) 31 detects earphone Mike
During the signal of wind insertion, driver 31 notifies system (the notification audio hardware abstraction layer of driver 31
(audio HAL) 21, then the notification audio manager 11 of audio hardware level of abstraction 21) there is External microphone
After insertion, the operation time by one section of software and hardware, driver 31 just receives system switching audio
The control command SS in path, driver 31 therefore could be by audio A U source in script
Microphone is switched to External microphone.In short, when External microphone inserts intelligent apparatus, Android system
System is after the time Jing Guo operating delay, to produce control command SS to control driver 31 will
Audio path is switched to External microphone by built-in microphone.However, when External microphone is inserted but not complete
Before being fully inserted into, possible audio path has been switched to External microphone, therefore External microphone is not fully inserted into
Before it is possible to recording the sound less than External microphone.In opposite situation, when External microphone is extracted
When, driver 31 notifies system, and system can first notify each application program, and generally by system
The operating delay of system and along with one setting time delay (as delay one second) after, just produce control
System orders SS to notify driver 31 to carry out the switching of audio path.However, during this section,
Because External microphone has been extracted, system is caused to produce in this period of delay, because audio A U
Source be still set to External microphone, can so record the content less than audio A U.
The content of the invention
The embodiment of the present invention provides a kind of gapless way of recording suitable for Android system, no matter external
Whether microphone plugs the effect that all can reach gapless recording.
The embodiment of the present invention provides a kind of gapless way of recording suitable for Android system, the Android
System is installed on intelligent apparatus, and the intelligent apparatus has built-in microphone, the gapless way of recording
The process recorded for intelligent apparatus, the method includes：The driver of intelligent apparatus judges intelligence
Whether device has inserted External microphone；When driver judges that intelligent apparatus has inserted External microphone
When, driver postpones audio path switching to external Mike by built-in microphone according to control command
Wind, to ensure just to start after the fully-inserted intelligent apparatus of External microphone recording；The driving journey of intelligent apparatus
Sequence judges whether intelligent apparatus has pulled out External microphone；And when driver judges intelligent apparatus
When pulling out External microphone, audio path is switched to built-in wheat by driver by External microphone immediately
Gram wind.
In summary, the embodiment of the present invention provides a kind of gapless way of recording suitable for Android system,
No matter when External microphone is inserted or pulled out, system can continue to record.User uses Android system
When system is recorded, the audio content of recording will not be interrupted because of the device of switching recording.Therefore, no
Have the problem of recording is interrupted and causes to lose important information.In addition, utilizing the gapless recording side
Method, because the content of recording is the continuous situation without audio disruption, so can also avoid user from hearing
The sense of discomfort produced during the recording of replay by sound interruption change.
To enable the feature and technology contents that are further understood that the present invention, refer to below in connection with this hair
Bright detailed description and accompanying drawing, but these explanations are intended merely to the explanation present invention with Figure of description, and
The non-interest field to the present invention makees any limitation.
Brief description of the drawings
Fig. 1 is the schematic diagram of traditional control of Android system framework and management recording.
Fig. 2 is the Android system framework applications of the embodiment of the present invention in the schematic diagram of control and management recording.
Fig. 3 is the schematic diagram of intelligent apparatus provided in an embodiment of the present invention and External microphone.
Fig. 4 is the flow of the gapless way of recording provided in an embodiment of the present invention suitable for Android system
Figure.
Fig. 5 is that the gapless way of recording suitable for Android system that another embodiment of the present invention is provided exists
Judge whether a kind of flow chart of applicable cases of insertion External microphone.
Fig. 6 is that the gapless way of recording suitable for Android system that another embodiment of the present invention is provided exists
Judge whether to pull out a kind of flow chart of applicable cases of External microphone.
Description of reference numerals：
100：Ccf layer
11：Audio manager
200：Hardware abstraction layer
21：Audio hardware level of abstraction
300：Core layer
31：Driver
AU：Audio
SS：Control command
4：Intelligent apparatus
5：External microphone
INT：Interrupt signal
S110、S120、S130、S140、S510、S520、S530、S540、S550、S610、
S620、S630、S640：Steps flow chart
Embodiment
(embodiment for being applied to the gapless way of recording of Android system)
Fig. 2 is refer to, Fig. 2 is that the Android system framework applications of the embodiment of the present invention are recorded in control with management
The schematic diagram of sound.Suitable for the gapless way of recording of Android system, the Android system is installed on intelligence
Device, the intelligent apparatus has built-in microphone.The intelligent apparatus is, for example, intelligent handhold device,
Such as smart mobile phone or tablet personal computer, but the present invention not therefore restriction.It is please with reference to Fig. 3, Fig. 3
The schematic diagram of intelligent apparatus and External microphone provided in an embodiment of the present invention.When the present embodiment continuously
When the gap way of recording is applied to the intelligent apparatus 4 using Android system, intelligent apparatus 4 is intelligent handhold
Device, such as smart mobile phone.External microphone 5 is, for example, ear microphone (ear microphone), but this
Therefore invention does not limit.The present invention does not limit the species of External microphone yet.
Android system includes ccf layer (framework) 100, hardware abstraction layer (Hardware Abstraction
Layer, HAL) 200 with core layer (Kernel) 300.For the function of recording, ccf layer 100
With audio manager 11, level of abstraction 200 has audio hardware level of abstraction 21, and core layer 300 has
Driver 31.Driver positioned at core layer 300 receives the audio A U of microphone apparatus, sound
Frequency AU source foundation switches the microphone apparatus used and determined.The microphone apparatus includes
Built-in microphone and External microphone 5, the built-in microphone of intelligent apparatus 4 is not illustrated in figure 3, because
It is concealed design for usual built-in microphone.The plug of External microphone 5 can cause audio connection end
The electrical property state of son produces change, and the electrical property state of audio connection terminal is when External microphone 5 is inserted
With both when pulling out and differ.Audio connection terminal is electrically connected with driver 31 so that driving journey
Sequence 31 obtains interrupt signal (interrupt) INT, and the Context activation procedures 31 according to interrupt signal understand outer
Connecing microphone 5 is insertion or pulls out.Driver 31 can then be determined according to interrupt signal INT
And switch audio path.Audio A U is transferred to the sound positioned at hardware abstraction layer 200 by driver 31
Frequency hardware abstraction layer 21, is resent to the audio manager 11 positioned at ccf layer 100.In addition, when drive
When dynamic program 31 judges that intelligent apparatus 4 has inserted or pulled out External microphone 5, driver 31 leads to
Know that the audio devices of audio manager 11 change, driver 31 also can be according to abstract from audio hardware
Layer 21 control command SS and switch audio path.Audio manager 11 produces transmission control command SS
To audio hardware level of abstraction 21, it is resent to driver 31 and thereby controls driver 31 to switch
Audio path.Briefly, audio manager 11 can be used for controlling via audio hardware level of abstraction 21
Driver 31 switches audio path, and receives and note down the audio passed on via audio path.So
And, using the gapless way of recording of the present embodiment, when External microphone 5 inserts intelligent apparatus 4,
The delayed switching audio path of driver 31, and when External microphone (5) is pulled out, driver 31
Switch audio path immediately without waiting for the control command SS from upper strata.Detailed embodiment please
With reference to the following description.
Referring to Fig. 2 and Fig. 4, Fig. 4 is provided in an embodiment of the present invention suitable for Android system
The flow chart of the gapless way of recording.The gapless way of recording is used for what intelligent apparatus was recorded
Process, the method comprises the following steps.In step s 110, intelligent apparatus is located at core layer 300
Driver 31 judges whether intelligent apparatus has inserted External microphone.When driver 31 judges intelligence
When energy device has inserted External microphone, step S120 is carried out, driver 31 prolongs according to control command
Audio path is switched into External microphone by built-in microphone late.The control command is coming for Fig. 2
The control command SS passed on from audio manager 11 and by audio hardware level of abstraction 21.It is described to drive
The delay of dynamic program 31 be setting be used for wait External microphone fully-inserted to intelligent apparatus wait when
Between, but the present invention does not limit the time delay length of driver 31, and it can need according to design
And adjust.By the delay of this driver suitably, External microphone is set (to be received during inserting
Interrupt signal INT) when, to External microphone it is fully-inserted before, system maintain carried out with built-in microphone
Recording, without having the situation that recording is interrupted, and after External microphone is fully-inserted, just with external wheat
Gram wind is recorded.In addition, ought in step s 110, driver 31 judges that intelligent apparatus is not inserted
When entering External microphone, repeat step S110 is judged with lasting.
After step S120, step S130 is then carried out, the driver 31 of intelligent apparatus judges
Whether intelligent apparatus has pulled out External microphone.When driver 31, to judge that intelligent apparatus has been pulled out external
During microphone, step S140 is carried out, driver 31 is immediately switched audio path by External microphone
For built-in microphone.Conversely, when driver 31 judges that intelligent apparatus not yet pulls out External microphone,
Repeat step S130, is judged with lasting.Specifically, in step s 130, driver is worked as
Interrupt signal INT produced when External microphone is pulled out is detected, driver 31 notifies system
Upper strata (ccf layer 100 and hardware abstraction layer 200), the i.e. sound of 31 notification audio manager of driver 11
Frequency device changes, but also switches audio path immediately by External microphone to built-in microphone.Based on peace
The framework of tall and erect system, in addition to the system operations time, is approximately passed through after 1~2 second, system upper strata
Audio manager 11 just produces control command SS and notifies the switching audio path of driver 31.However,
Before driver 31 receives control command SS, audio path is first switched to by driver 31
Built-in microphone, to avoid the situation that recording is interrupted.In addition, when driver 31 receives audio pipe
After the control command SS for managing device 11, the parameter of audio can be also adjusted further according to control command SS, for example
Adjust intensity or tonequality of audio etc..Therefore, the fine setting of audio can be done.It follows that when external wheat
When gram wind is extracted by intelligent apparatus, driver 31 will not be because of waiting system for the switching of audio path
The control command SS on upper strata and produce delay (including system operations delay and 1~2 second delay), enter
And cause recording to interrupt.According to above-mentioned, the driver 31 of the present embodiment can be pulled out according to External microphone
The interrupt signal INT removed switches audio path immediately, that is, is not necessary to the audio manager 11 by such as Fig. 2
And the control command SS of audio hardware level of abstraction 21 switches audio path.Therefore pulled out in External microphone
Except when, audio path is switched to built-in microphone immediately, therefore, during External microphone is pulled out
The sound recorded can't have been interrupted.
It is noted that whether the step S110 in Fig. 4 flow be used to judge External microphone
Insertion, and step S130 is used to judge whether External microphone has been pulled out, in practical application, step
Therefore S110 and S130 order does not limit.When without External microphone, the driving journey of intelligent apparatus
Sequence 31 can repeatedly carry out step S110 persistently to determine whether that External microphone is inserted.Work as intelligence
When energy device has inserted External microphone, driver 31 repeatedly can carry out step S130 to hold
It is continuous to judge whether External microphone is pulled out.Step stream of Fig. 4 process structure to illustrate the present invention
The main spirits of journey, the present invention therefore limit step S110 and step S130 use order and
Execution opportunity.Process structure based on Fig. 4, below will be respectively with External microphone insertion and external wheat
Gram wind pulls out both applicable cases and provides two embodiments respectively to help to illustrate.
Referring to Fig. 2 and Fig. 5, Fig. 5 is another embodiment of the present invention offer suitable for Android system
Flow chart of the gapless way of recording of system in a kind of applicable cases for judging whether to insert External microphone.
In step S510, driver 31 judges whether to receive interrupt signal INT.If in receiving
Break signal INT simultaneously confirms that interrupt signal is to represent External microphone to have inserted, then carries out step S520,
Notice system (upper strata) audio devices change, that is, notify hardware abstraction layer 21 then again via hard
The notification audio manager 11 of part level of abstraction 21.Then, step S530 is carried out, system (upper strata) is judged
Whether notify audio path switching to External microphone.If system will notify driver by audio road
Footpath switches to External microphone, then carries out step S540, and then driver delayed switching is just carried out
Audio path is switched to External microphone by step S550, driver.Step S540 driver
Delay is that setting was used to wait External microphone fully-inserted to the stand-by period of intelligent apparatus, and it can be with
Need and adjust according to design, the present invention does not limit the time span of this driver delay.This driving
Program delay switch, purpose make External microphone insert process (receiving interrupt signal INT) when,
To External microphone it is fully-inserted before, system maintains to be recorded with built-in microphone, and in external Mike
After wind is fully-inserted, just recorded with External microphone.
Then, referring to Fig. 2 and Fig. 6, Fig. 6 is being applied to for another embodiment of the present invention offer
The gapless way of recording of Android system is judging whether to pull out a kind of applicable cases of External microphone
Flow chart.In step S610, driver 31 judges whether to receive interrupt signal INT.If
Receive interrupt signal INT and confirm that interrupt signal is to represent External microphone to be pulled out, then carry out
Step S620, driver 31 notifies the audio devices of audio manager 11 of system to change, and by sound
Frequency path is immediately switched to built-in microphone.Then, step S630 is carried out, judges that system (upper strata) is
No notice switches to built-in microphone.If notifications will switch to built-in microphone, audio manager
11 transmission control command SS then, then carry out step S640 to driver 31.However, driving
Dynamic program 31 is received before the control command SS of the transmission of audio manager 11, is driven in step S620
Audio path is switched to built-in microphone by dynamic program 31, so that the sound recorded will not be interrupted.
In step S640, audio frequency parameter, the intensity or tonequality of such as audio can be adjusted according to control command SS
Etc..Specifically, it can include allowing driving journey in the control command SS that audio manager 11 is transmitted
The order of the parameter of the adjustment audio of sequence 31.However, the present invention does not limit the control command of adjustment audio
Content and form.
Can substantially it be known by figure 5 above and Fig. 6 two embodiments, the gapless record of the present embodiment
The driver 31 of sound method when External microphone is inserted delayed switching audio path to wait external wheat
Gram wind is fully-inserted, and the control command SS when External microphone is pulled out without waiting for upper strata can be first
Row switching audio path.Driver 31 also can adjust audio frequency parameter according to the control command on upper strata.
(the possibility technique effect of embodiment)
In summary, the gapless way of recording suitable for Android system that the embodiment of the present invention is provided
No matter when External microphone is inserted or pulled out, Android system can be allowed persistently to record.Because driving journey
Sequence when External microphone is inserted delayed switching audio path to wait External microphone fully-inserted, and
The switching of audio path is just done in order when External microphone is pulled out without waiting for system upper strata, and allowing makes
When user is recorded using Android system, (External microphone is interior for the device that will not be recorded because of switching
Microphone) and it is interrupted the audio content recorded, thereby reach whole recording.Therefore, recording is not had
The problem of interrupting and cause to lose important information.In addition, using the gapless way of recording, because
The content of recording is the continuous situation without audio disruption, therefore can also avoid user from hearing the record of replay
The sense of discomfort produced during sound by sound interruption change.
Embodiments of the invention are the foregoing is only, it is simultaneously not used to limitation the scope of the claims of the invention.
Claims (10)
1. a kind of gapless way of recording suitable for Android system, it is characterised in that the Android system
An intelligent apparatus is installed on, the intelligent apparatus has a built-in microphone, the gapless way of recording is used for
The process that the intelligent apparatus is recorded, the gapless way of recording includes：
One driver of the intelligent apparatus judges whether the intelligent apparatus has inserted an External microphone；
And
When the driver judges that the intelligent apparatus has inserted the External microphone, the driver according to
One audio path is switched into the External microphone by the built-in microphone according to control command delay.
2. the gapless way of recording according to claim 1 suitable for Android system, in addition to：
The driver of the intelligent apparatus judges whether the intelligent apparatus has pulled out the External microphone；
And
When the driver judges that the intelligent apparatus has pulled out the External microphone, the driver is stood
Will the audio path built-in microphone is switched to by the External microphone.
3. the gapless way of recording according to claim 1 suitable for Android system, wherein should
Control command is produced by an audio manager, and is sent to the driving journey via an audio hardware level of abstraction
Sequence.
4. the gapless way of recording according to claim 3 suitable for Android system, wherein should
Audio manager is located at a ccf layer of the Android system.
5. the gapless way of recording according to claim 3 suitable for Android system, wherein should
Audio hardware level of abstraction is located at a hardware abstraction layer of the Android system.
6. the gapless way of recording according to claim 1 suitable for Android system, in addition to：
When the driver judges that the intelligent apparatus has inserted the External microphone, the driver leads to
Know that an audio manager audio devices change.
7. the gapless way of recording according to claim 2 suitable for Android system, in addition to：
When the driver judges that the intelligent apparatus has pulled out the External microphone, the driver leads to
Know that an audio manager audio devices change.
8. the gapless way of recording according to claim 7 suitable for Android system, should working as
When driver judges that the intelligent apparatus has pulled out the External microphone, the driver notifies the audio
After the step of manager audio devices change, in addition to：
The audio manager transmits the control command to the driver to adjust the parameter of audio.
9. the gapless way of recording according to claim 1 suitable for Android system, wherein should
External microphone is ear microphone.
10. the gapless way of recording according to claim 1 suitable for Android system, wherein should
Intelligent apparatus is intelligent handhold device.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109360588A (en) * | 2018-09-11 | 2019-02-19 | 广州荔支网络技术有限公司 | A kind of mobile device-based audio-frequency processing method and device |
| CN109378017A (en) * | 2018-09-26 | 2019-02-22 | 科大讯飞股份有限公司 | A kind of way of recording, device, audio system, sound pick-up outfit and storage medium |
| CN110989965A (en) * | 2019-11-29 | 2020-04-10 | 安徽咪鼠科技有限公司 | Voice mouse based recording line switching method, system and device and readable storage medium |
| CN112509608A (en) * | 2020-11-25 | 2021-03-16 | 广州朗国电子科技有限公司 | Method and device for recording sound along with channel of USB (Universal Serial bus) equipment and storage medium |
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| CN112509608A (en) * | 2020-11-25 | 2021-03-16 | 广州朗国电子科技有限公司 | Method and device for recording sound along with channel of USB (Universal Serial bus) equipment and storage medium |
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|---|---|
| CN107018465B (en) | 2019-08-16 |
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