CN107967130A - A kind of switching method and device of vehicle device voice-grade channel - Google Patents
A kind of switching method and device of vehicle device voice-grade channel Download PDFInfo
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- CN107967130A CN107967130A CN201610914938.3A CN201610914938A CN107967130A CN 107967130 A CN107967130 A CN 107967130A CN 201610914938 A CN201610914938 A CN 201610914938A CN 107967130 A CN107967130 A CN 107967130A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
Abstract
The invention discloses a kind of switching method and device of vehicle device voice-grade channel, this method includes：One of multiple voice-grade channels apply for focus to AudioManager；Voice-grade channel inquiry audio tactical management table according to application focus；If query result obtains successfully for focus, position of the voice-grade channel of focus in focus stack is applied in adjustment；Voice-grade channel is chosen according to the position in the focus stack to play out.The advantageous effect of the invention is：Using framework API, the degree of coupling between APP can be reduced, becomes apparent from system structure, and there are the API performances of higher and audio focus management is more convenient compared to common approach.
Description
Technical field
The present invention relates to vehicle device audio play-back technology field, more particularly to a kind of switching method and dress of vehicle device voice-grade channel
Put.
Background technology
The audio-visual car terminals of multimedia recreation of car networking are currently based on, referred to as " vehicle device ", each manufacturer is using different
Multimedia multi-channel audio Managed Solution.I.e. current sound whether should maintenance play, when next sound come it is interim, on
One sound needs to suspend or audio mixing output, and also there are a variety of different voice-grade channels, such as bluetooth, 3G/4G phones to wait.Mesh
It is preceding in the prior art, different according to protocol conventions based on the communication of rendezvous protocol between upper layer software (applications) APP, APP leads between each other
Cross AIDL (Android Interface Definition Language) services and send corresponding instruction with regard to calling switching audio
The interface of passage, to complete audio frequency output channel handoff functionality.But due to interactive too many between APP in vehicle device, the degree of coupling
Height, can cause the problems such as efficiency is low, logic is complicated, easy error according to prior art processing.
The content of the invention
The technical problem to be solved in the present invention is, for above-mentioned in the prior art due to being interacted too between APP in vehicle device
More, the degree of coupling is high, can cause the problems such as efficiency is low, logic is complicated, easy error according to prior art processing, there is provided Yi Zhongche
The switching method and device of machine voice-grade channel.
The technical solution adopted by the present invention to solve the technical problems is：
On the one hand, a kind of switching method of vehicle device voice-grade channel is constructed, including：
One of multiple voice-grade channels apply for focus to AudioManager；
Voice-grade channel inquiry audio tactical management table according to application focus；
If query result obtains successfully for focus, position of the voice-grade channel of focus in focus stack is applied in adjustment；
Voice-grade channel is chosen according to the position in the focus stack to play out.
In switching method of the present invention, one of the multiple voice-grade channel is applied to AudioManager
In the step of focus：
One of multiple voice-grade channels call RequestAudioFocus application focuses.
In switching method of the present invention, the voice-grade channel inquiry audio tactical management table according to application focus
The step of in：
ID according to the RequestAudioFocus called inquires about the audio tactical management table.
In switching method of the present invention, if the query result obtains successfully for focus, adjustment application focus
Position of the voice-grade channel in focus stack the step of include following sub-step：
If query result obtains the stack top for the voice-grade channel push-in focus stack that will successfully apply for focus for focus；
Original plays voice-grade channel and is then arranged under the stack top, and the former voice-grade channel that plays passes through
OnAudioFocusChange functions reduce volume or audio mixing exports or pause plays.
In switching method of the present invention, the position according in the focus stack is chosen voice-grade channel and is broadcast
The step of putting includes following sub-step：
The broadcast strategy of voice-grade channel is performed according to query result；
When the voice-grade channel in stack top finishes, abandonAudioFocus is called to abandon focus；
First voice-grade channel under the stack top is pushed into the stack top, and passes through calling
OnAudioFocusChange functions play the voice-grade channel for being currently at stack top.
On the other hand, there is provided a kind of switching device of vehicle device voice-grade channel, including：
Focus application module, for making one of multiple voice-grade channels apply for focus to AudioManager；
Enquiry module, for inquiring about audio tactical management table according to the voice-grade channel of application focus；
Priority adjusts module, if being obtained successfully for focus for query result, the voice-grade channel of adjustment application focus
Position in focus stack；
Audio playing module, plays out for choosing voice-grade channel according to the position in the focus stack.
In switching device of the present invention, the focus application module be additionally operable to make multiple voice-grade channels wherein it
One calls RequestAudioFocus application focuses.
In switching device of the present invention, the enquiry module is additionally operable to what foundation was called
The ID of RequestAudioFocus inquires about the audio tactical management table.
In switching device of the present invention, the priority adjustment module includes：
Stack top is pushed into submodule, for when query result obtains successfully for focus, then will apply for the voice-grade channel of focus
It is pushed into the stack top of focus stack；
Former voice-grade channel handles submodule, and playing voice-grade channel for original is then arranged under the stack top, and the original is broadcast
Put voice-grade channel and volume reduction or audio mixing are exported or suspended broadcasting by onAudioFocusChange functions.
In switching device of the present invention, the audio playing module includes：
Broadcast strategy implementation sub-module, for performing the broadcast strategy of voice-grade channel according to query result；
Focus abandons submodule, for when the voice-grade channel in stack top finishes, calling
AbandonAudioFocus abandons focus；
Stack top adjusts submodule, for first voice-grade channel under the stack top to be pushed into the stack top, and passes through
OnAudioFocusChange functions are called to play the voice-grade channel for being currently at stack top.
The switching method and device of a kind of vehicle device voice-grade channel disclosed above have the advantages that：Using
Framework API, can reduce the degree of coupling between APP, become apparent from system structure, and have higher compared to common approach
API performances；Audio focus management is more convenient, and by arranging the id of each audio, framework only needs to safeguard a focus
Stack, APP realize the callback interface of focus switching, can realize pause, play, the audio focus management of audio mixing.
Brief description of the drawings
Fig. 1 is a kind of switching method flow chart of vehicle device voice-grade channel provided by the invention；
Fig. 2 is a kind of schematic diagram for focus application scenarios that one embodiment of the invention provides；
Fig. 3 is a kind of schematic diagram for focus application scenarios that another embodiment of the present invention provides；
Fig. 4 is the focus stack change schematic diagram that one embodiment of the invention provides.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
The present invention provides a kind of switching method and device of vehicle device voice-grade channel, it is intended that being based on Android
(Android is a kind of freedom based on Linux and the operating system of open source code, is mainly used for mobile equipment, such as intelligence
Mobile phone and tablet computer) (Framework, that is, framework, it is a language development software to intermediate layer framework, there is provided soft
The frame of part exploitation, makes exploitation have more engineering, simplicity and stability) voice-grade channel handoff technique, APP passes through calling
Between framework API (Application Programming Interface, application programming interface), completion APP
Focus conversion, after converting by AIDL service readjustment upper strata switch voice-grade channel interface, then interface notification MCU is complete
Into related audio output channel switch operating.Using framework API, each audio is given with different id by strategy, is made
Framework need to only possess the conversion that different audios can be achieved in a focus stack.
Referring to Fig. 1, Fig. 1 is a kind of switching method flow chart of vehicle device voice-grade channel provided by the invention, the vehicle device audio
The switching method of passage includes step S1-S4：
One of S1, multiple voice-grade channels apply for focus to AudioManager；Multiple voice-grade channels wherein it
One calls RequestAudioFocus application focuses.AudioManager is the api interface that framework is provided.
S2, the voice-grade channel inquiry audio tactical management table according to application focus；According to what is called
The ID of RequestAudioFocus inquires about the audio tactical management table.Referring to Fig. 2, Fig. 2 is what one embodiment of the invention provided
A kind of schematic diagram of focus application scenarios, APP are used by calling requestAudioFocus to apply for focus
The parameter id of requestAudioFocus looks into audio tactical management table.By arranging the id of each audio, framework is only tieed up
A focus stack is protected, i.e. APP realizes the callback interface of focus switching, can realize pause, plays, the audio focus pipe of audio mixing
Reason, if wherein sound is different voice-grade channels, notice MCU is switched to respective channel and plays sound again.
If S3, query result obtain successfully for focus, position of the voice-grade channel of focus in focus stack is applied in adjustment；
Step S3 includes sub-step S31-S32：
If S31, query result obtain the stack top for the voice-grade channel push-in focus stack that will successfully apply for focus for focus；
Referring to Fig. 2, according to checking result, current sound can obtain focus, then return to AUDIOFOCUS_REQUEST_GRANTED tables
Show that focus obtains successfully, otherwise return to AUDIOFOCUS_REQUEST_FAILED and represent that focus obtains failure.
S32, the former voice-grade channel that plays then are arranged under the stack top, and the former voice-grade channel that plays passes through
OnAudioFocusChange functions reduce volume or audio mixing exports or pause plays.When current channel is empty, then necessarily obtain
Success is taken, the audio focus of current request is pushed into the focus stack top of framework, represents that current sound can play, APP is straight
Connect broadcasting.
If current music passage is playing, APP2 is used by calling requestAudioFocus to apply for focus
The parameter id of requestAudioFocus looks into audio tactical management table, if checking result obtains successfully, represents that current sound can be with
Play, by the focus stack top of the audio focus of APP2 push-in framework, the audio focus of APP is then squeezed in stack top in the following, this
When onAudioFocusChange readjustment APP, control the pause of APP, or reduce volume, audio mixing output.
S4, according in the focus stack position choose voice-grade channel play out.Step S4 includes sub-step S41-
S43：
S41, the broadcast strategy according to query result execution voice-grade channel；Referring to Fig. 3, Fig. 3 is another embodiment of the present invention
A kind of schematic diagram of the focus application scenarios provided.Such as Fig. 3, current video is playing, when calling suddenly, phone
And focus is applied for by requestAudioFocus, it is telephone channel to need to switch voice-grade channel by MCU at this time, then
Video is interrupted pause.
S42, when the voice-grade channel in stack top finishes, call abandonAudioFocus abandon focus；Such as figure
3, during answering the call, if the sound of the navigation come at this time, phone will lose focus for a period of time, sound to be navigated is broadcast
After discharging, navigation calls abandonAudioFocus to abandon focus, i.e., removes stack top location in the focus stack of framework.
S43, by first voice-grade channel under the stack top be pushed into the stack top, and passes through calling
OnAudioFocusChange functions play the voice-grade channel for being currently at stack top.Such as Fig. 3, phone focus under stack top then by
Stack top is shifted onto, by adjusting back onAudioFocusChange so that phone hears that other side speaks.It is same to adjust after phone is hung up
Focus is abandoned with abandonAudioFocus, video will put video receiving the follow-up continued broadcasting of onAudioFocusChange readjustments.
Focus is preempted and regains framework focus stacks.
Specifically, referring to Fig. 4, Fig. 4 is the focus stack change schematic diagram that one embodiment of the invention provides, it includes：
S101, focus stack are sky, and Music obtains focus.
S102, video (Video) play, and music (Music) actively discharges focus, pops.
S103, phone (Phone) arrive, and video loses focus, and telephone speech obtains focus.
S104, navigation sound (NAVI) arrive, and telephone speech loses focus, phone volume is reduced in program, and audio mixing is defeated
Go out.
S105, navigation sound finish, and telephone speech regains focus.
S106, phone are hung up, and video replays.
Based on the flow shown in Fig. 4, switchover policy such as following table is partly raised to：
The tactical management that the Policy Table should observe when indicating Audio conversion, strategy of the management based on upper table of focus stack.
The Policy Table defines common ARM_Ent (music, video), generic outer Ent (BT_Audio, AUX, FM, Link), reports
Class Ent (news is read aloud, books are read aloud), ordinary procedure TTS and application layer prompt tone, system-level backstage prompt tone (short message remind,
Bluetooth connection prompting, mobile phone connection are reminded), navigation, call (PHONE) control strategy when sound channel is changed between each other.
On the other hand, there is provided a kind of switching device of vehicle device voice-grade channel, the device in vehicle system by setting phase
The program answered realizes that the device includes：
Focus application module, for making one of multiple voice-grade channels apply for focus to AudioManager；
Enquiry module, for inquiring about audio tactical management table according to the voice-grade channel of application focus；
Priority adjusts module, if being obtained successfully for focus for query result, the voice-grade channel of adjustment application focus
Position in focus stack；
Audio playing module, plays out for choosing voice-grade channel according to the position in the focus stack.
Preferably, the focus application module is additionally operable to call one of multiple voice-grade channels
RequestAudioFocus applies for focus.
Preferably, the enquiry module is additionally operable to inquire about the sound according to the ID of the RequestAudioFocus called
Frequency tactical management table.
Preferably, the priority adjustment module includes：
Stack top is pushed into submodule, for when query result obtains successfully for focus, then will apply for the voice-grade channel of focus
It is pushed into the stack top of focus stack；
Former voice-grade channel handles submodule, and playing voice-grade channel for original is then arranged under the stack top, and the original is broadcast
Put voice-grade channel and volume reduction or audio mixing are exported or suspended broadcasting by onAudioFocusChange functions.
Preferably, the audio playing module includes：
Broadcast strategy implementation sub-module, for performing the broadcast strategy of voice-grade channel according to query result；
Focus abandons submodule, for when the voice-grade channel in stack top finishes, calling
AbandonAudioFocus abandons focus；
Stack top adjusts submodule, for first voice-grade channel under the stack top to be pushed into the stack top, and passes through
OnAudioFocusChange functions are called to play the voice-grade channel for being currently at stack top.
There is provided herein the various operations of embodiment.In one embodiment, described one or operation may be constructed one
The computer-readable instruction stored on a or computer-readable medium, it will be so that computing device be held when being performed by electronic equipment
The row operation.Describing the orders of some or all of operations, to should not be construed as to imply that these operations necessarily order dependent
's.It will be appreciated by those skilled in the art that the alternative sequence of the benefit with this specification.Furthermore, it is to be understood that it is not institute
There is operation to exist in each embodiment provided in this article.
Moreover, word " preferable " used herein means serving as example, example or illustration.Feng Wen is described as " preferably
" any aspect or design be not necessarily to be construed as than other aspect or design it is more favourable.On the contrary, the use purport of word " preferable "
Concept is being proposed in a concrete fashion.Term "or" as used in this application is intended to mean the "or" included and non-excluded
"or".I.e., unless otherwise or clear from the context, " X means that nature includes any one of arrangement using A or B ".
That is, if X uses A；X uses B；Or X uses A and B both, then " X is met using A or B " in foregoing any example.
Moreover, although having shown and described the disclosure relative to one or implementation, but people in the art
Member is based on the reading to the specification and drawings and understands it will be appreciated that equivalent variations and modification.The disclosure includes all such
Modifications and variations, and be limited only by the scope of the following claims.In particular, to by said modules (such as element, resource
Deng) various functions that perform, the term for describing such component is intended to correspond to the specified function (example for performing the component
As it is functionally of equal value) random component (unless otherwise instructed), in structure with perform shown in this article
The open structure of function in disclosed exemplary implementations is not equivalent.In addition, the although special characteristic of the disclosure phase
Be disclosed for the only one in some implementations, but this feature can with such as can be for given or application-specific
It is one or other combinations of features it is expected with other favourable implementations.Moreover, with regard to term " comprising ", " having ", " contain
Have " or its deformation be used in embodiment or claim for, such term be intended to with term "comprising" phase
As mode include.
Each functional unit in the embodiment of the present invention can be integrated in a processing module or unit list
Solely be physically present, can also two or more units be integrated in a module.Above-mentioned integrated module can both use
The form of hardware is realized, can also be realized in the form of software function module.If the integrated module is with software function
The form of module is realized and is used as independent production marketing or is situated between in use, a computer-readable storage can also be stored in
In matter.Storage medium mentioned above can be read-only storage, disk or CD etc..Above-mentioned each device or system, can be with
Perform the storage method in correlation method embodiment.
In conclusion although the present invention is disclosed above with preferred embodiment, above preferred embodiment simultaneously is not used to limit
The system present invention, those of ordinary skill in the art, without departing from the spirit and scope of the present invention, can make various changes and profit
Decorations, therefore protection scope of the present invention is subject to the scope that claim defines.
Claims (10)
- A kind of 1. switching method of vehicle device voice-grade channel, it is characterised in that including：One of multiple voice-grade channels apply for focus to AudioManager；Voice-grade channel inquiry audio tactical management table according to application focus；If query result obtains successfully for focus, position of the voice-grade channel of focus in focus stack is applied in adjustment；Voice-grade channel is chosen according to the position in the focus stack to play out.
- 2. switching method according to claim 1, it is characterised in that one of the multiple voice-grade channel to AudioManager applied in the step of focus：One of multiple voice-grade channels call RequestAudioFocus application focuses.
- 3. switching method according to claim 1, it is characterised in that the voice-grade channel inquiry sound according to application focus In the step of frequency tactical management table：ID according to the RequestAudioFocus called inquires about the audio tactical management table.
- 4. switching method according to claim 1, it is characterised in that if the query result obtains successfully for focus, Adjustment applies for that the step of position of the voice-grade channel of focus in focus stack includes following sub-step：If query result obtains successfully for focus, the voice-grade channel for applying for focus is pushed into the stack top of the focus stack；Original plays voice-grade channel and is then arranged under the stack top, and the former voice-grade channel that plays passes through OnAudioFocusChange functions reduce volume or audio mixing exports or pause plays.
- 5. switching method according to claim 4, it is characterised in that choose sound in the position according in the focus stack The step of frequency passage plays out includes following sub-step：The broadcast strategy of voice-grade channel is performed according to query result；When the voice-grade channel in stack top finishes, abandonAudioFocus is called to abandon focus；First voice-grade channel under the stack top is pushed into the stack top, and by calling onAudioFocusChange letters Number plays the voice-grade channel for being currently at stack top.
- A kind of 6. switching device of vehicle device voice-grade channel, it is characterised in that including：Focus application module, for making one of multiple voice-grade channels apply for focus to AudioManager；Enquiry module, for inquiring about audio tactical management table according to the voice-grade channel of application focus；Priority adjusts module, if being obtained successfully for focus for query result, the voice-grade channel of adjustment application focus is in Jiao Position in point stack；Audio playing module, plays out for choosing voice-grade channel according to the position in the focus stack.
- 7. switching device according to claim 6, it is characterised in that the focus application module is additionally operable to make multiple audios One of passage calls RequestAudioFocus application focuses.
- 8. switching device according to claim 6, it is characterised in that the enquiry module is additionally operable to what foundation was called The ID of RequestAudioFocus inquires about the audio tactical management table.
- 9. switching device according to claim 6, it is characterised in that the priority adjustment module includes：Stack top is pushed into submodule, for when query result obtains successfully for focus, being then pushed into the voice-grade channel for applying for focus The stack top of the focus stack；Former voice-grade channel handles submodule, and playing voice-grade channel for original is then arranged under the stack top, the former broadcasting sound Frequency passage is reduced volume by onAudioFocusChange functions or audio mixing exports or pause plays.
- 10. switching device according to claim 9, it is characterised in that the audio playing module includes：Broadcast strategy implementation sub-module, for performing the broadcast strategy of voice-grade channel according to query result；Focus abandons submodule, for when the voice-grade channel in stack top finishes, calling abandonAudioFocus to put Abandon focus；Stack top adjusts submodule, for first voice-grade channel under the stack top to be pushed into the stack top, and passes through calling OnAudioFocusChange functions play the voice-grade channel for being currently at stack top.
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| CN112130802A (en) * | 2020-09-24 | 2020-12-25 | 中国第一汽车股份有限公司 | Vehicle-mounted audio playing method and device, vehicle and storage medium |
| CN112416290A (en) * | 2020-11-27 | 2021-02-26 | 扬州航盛科技有限公司 | Audio management method based on audio focus |
| US11626140B2 (en) | 2020-12-09 | 2023-04-11 | Apollo Intelligent Connectivity (Beijing) Technology Co., Ltd. | Audio data processing method, electronic device, and storage medium |
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Application publication date: 20180427 |