CN112799631B - Optimizing system and optimizing method for controlling DSP (digital Signal processor) on android system - Google Patents
Optimizing system and optimizing method for controlling DSP (digital Signal processor) on android system Download PDFInfo
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Abstract
The invention discloses an optimization system and an optimization method for controlling a DSP on an android system, which belong to the field of vehicle-mounted entertainment, and the optimization system for controlling the DSP on the android system comprises the following components: the digital signal processor comprises a control unit, a DSP unit and a playing unit; the invention provides a method for building an independent control hardware abstraction layer sub-module function, a DSP control flow sends a message to the control hardware abstraction layer sub-module layer, when an interface is set to set sound effects, an APP calls a corresponding interface of an automobile audio manager module, then an automobile audio service module transmits sound effect parameters set by the APP to the corresponding interface of the control hardware abstraction layer sub-module through an audio system framework android HIDL, and the control hardware abstraction layer sub-module transmits the sound effect parameters to the DSP module.
Description
Technical Field
The invention discloses an optimization system and an optimization method for controlling a DSP (digital signal processor) on an android system, and belongs to the field of vehicle-mounted entertainment.
Background
Android enters a vehicle-mounted entertainment system by virtue of good man-machine interaction advantages, but when music is played, the vehicle-mounted Audio and the mobile phone Audio are greatly different: when the vehicle-mounted Audio plays music, the vehicle-mounted Audio can be finally output to the hardware equipment to be played after the DSP performs sound effect processing.
And the communication between the Android terminal and the DSP terminal does not have corresponding function realization on the original Android architecture, and a mode with low code coupling degree and clear Android framework is provided for realizing the communication between the Android terminal and the DSP terminal.
Based on the two points, the DSP control stream and the Audio data stream are transmitted through the Audio HAL, and the problems of high code coupling degree, unclear integral Audio framework and the like exist.
Disclosure of Invention
The invention aims to: an optimization system and an optimization method for controlling a DSP on an android system are provided to solve the problems.
The technical scheme is as follows: an optimization system for controlling a DSP on an android system comprising:
the control unit is used for playing music and music software APP on the android system;
a DSP unit for processing the audio data signal and transmitting the audio data and the control data;
and the playing unit is used for playing music through the vehicle-mounted sound box.
Preferably, the DSP unit comprises:
the DSP module is used for receiving and optimizing the control signal and the audio data signal and outputting the optimized audio data to the playing equipment;
the audio data transmission module is used for transmitting audio data signals output by the music software APP;
and the DSP control transmission module is used for transmitting the DSP control data signals.
Preferably, the DSP control transmission module includes:
the DSP channel control transmission channel sub-module is used for transmitting DSP channel control flow data;
the DSP sound effect control transmission channel sub-module is used for transmitting DSP sound effect control flow data;
and the control hardware abstraction layer sub-module is used for receiving the DSP control flow data and realizing the separation work of the audio data control flow and the DSP control flow.
Preferably, the DSP channel control transmission channel submodule includes:
the audio manager module is used for receiving the DSP channel control flow, applying for an audio focus and outputting the audio focus after the audio focus is applied;
and the audio service module is used for receiving the control flow of the receiving DSP channel sent and output by the audio manager module and simultaneously providing volume control and volume mode selection services for users.
Preferably, the DSP sound effect control transmission channel submodule includes:
the automobile audio manager module is used for receiving the DSP sound effect control flow, setting and outputting various parameters of the audio sound effect;
and the automobile Audio service module is used for receiving the DSP sound effect control flow output by the automobile Audio manager module and the DSP sound effect control flow output by the Audio service module, and outputting the DSP sound effect control flow to the DSP hardware abstraction layer submodule through an Audio system framework Audio HIDL.
Preferably, the audio data transmission module includes:
a sound track sub-module for performing control of each sound part of the transmission music so as to control the audio data at a specific position;
the audio trigger sub-module is used for carrying out memory caching on the audio data in a memory sharing mode;
the mixing thread sub-module is used for mixing the audio data lines and then outputting the mixed audio data lines;
the audio hardware abstraction layer sub-module receives the audio data stream and performs control output;
and the sound clip module is used for receiving and converting the audio signal and outputting the audio signal to the DSP module.
An optimization method of an optimization system for controlling a DSP on an android system is characterized in that a single control hardware abstraction layer sub-module function is built, and a DSP control flow sends a message to the control hardware abstraction layer sub-module, so that the logic of separating an audio data control flow and the DSP control flow is realized, and the problem of high code coupling degree is solved; the method comprises the following specific steps:
step 1, music software android APP starts to play music;
step 2, performing audio optimization;
step 21, firstly, an audio focus is required to be applied for in an audio manager module;
step 22, after the audio focus is applied, sending a DSP control channel message to a control hardware abstraction layer sub-module in an automobile audio service module through an audio system framework android HIDL;
step 23, the control hardware abstraction layer submodule forwards the channel information to the DSP module;
step 24, the DSP module selects a channel to play the sound source currently applied to the focus;
and step 3, the DSP module outputs the audio data to the hardware playing device.
Preferably, after the application of the audio focus is completed, the current APP is notified to start playing music, namely, the APP writes audio data into the audio track sub-module, the audio data is written into the memory buffer area of the audio trigger sub-module in a memory sharing manner, after the audio data buffer area meets corresponding conditions, the thread of the mixing thread sub-module starts to write the audio data into the output layer Stream Out of the audio hardware abstraction layer sub-module, then the audio hardware abstraction layer sub-module in the audio data transmission module is controlled to open a sound card of the sound card sub-module, the audio data is written into the corresponding sound card, and finally the audio data is output to the hardware playing device through the DSP.
Preferably, when the interface is set to set the sound effect, the APP calls the corresponding interface of the automobile audio manager module, and then the automobile audio service module transmits the sound effect parameters set by the APP to the corresponding interface of the control hardware abstraction layer sub-module through the android HIDL of the audio system framework, and the control hardware abstraction layer sub-module transmits the sound effect parameters to the DSP module.
The beneficial effects are that: the invention provides a method for building an independent control hardware abstraction layer sub-module function, a DSP control flow sends a message to the control hardware abstraction layer sub-module layer, when an interface is set to set sound effects, an APP calls a corresponding interface of an automobile audio manager module, then an automobile audio service module transmits sound effect parameters set by the APP to the corresponding interface of the control hardware abstraction layer sub-module through an audio system framework android HIDL, and the control hardware abstraction layer sub-module transmits the sound effect parameters to the DSP module.
Drawings
Fig. 1 is a flow chart of the operation of the present invention.
Fig. 2 is a block diagram of the system operation of the present invention.
Fig. 3 is a block diagram of a DSP unit of the present invention.
Fig. 4 is a block diagram of the operation of the audio data transmission module of the present invention.
Fig. 5 is a block diagram of the operation of the DSP control transmission module of the present invention.
Detailed Description
In this embodiment, as shown in fig. 1, an optimization system for controlling a DSP on an android system and an optimization method thereof, a control unit, a DSP unit, and a playing unit.
In a further embodiment, the DSP unit comprises: the DSP module and the audio data transmission module control the transmission module.
In a further embodiment, the DSP module is configured to receive and optimize the control signal and the audio data signal and output the optimized audio data to the playback device.
In a further embodiment, the audio data transmission module is configured to transmit the audio data signal output by the music software APP.
In a further embodiment, the DSP control transmission module is configured to transmit DSP control data signals.
In a further embodiment, the DSP control transmission module comprises: the DSP channel controls the transmission channel sub-module, the DSP sound effect controls the transmission channel sub-module and the control hardware abstraction layer sub-module.
In a further embodiment, the DSP channel control transmit channel submodule is configured to transmit DSP channel control flow data.
In a further embodiment, the DSP sound control transmission channel sub-module is configured to transmit DSP sound control stream data.
In a further embodiment, the control hardware abstraction layer submodule is configured to receive DSP control flow data, and implement separate operations of the audio data control flow and the DSP control flow.
In a further embodiment, the DSP channel control transmission channel submodule includes: an audio manager module and an audio service module.
In a further embodiment, the audio manager module is configured to receive the DSP channel control stream, apply for audio focus, and output when the audio focus is applied for later.
In a further embodiment, the audio service module is configured to receive the control flow of the receiving DSP channel sent by the audio manager module, and simultaneously provide a volume control and a volume mode selection service for the user.
In a further embodiment, the DSP sound effect control transmission channel submodule includes: an automotive audio manager module and an automotive audio service module.
In a further embodiment, the car audio manager module is configured to receive the DSP audio control stream and perform audio parameter settings and outputs.
In a further embodiment, the car Audio service module is configured to receive the DSP Audio control flow output by the car Audio manager module and the DSP Audio control flow output by the Audio service module, and output the DSP Audio control flow to the DSP hardware abstraction layer submodule through an Audio system frame Audio HIDL.
In a further embodiment, the audio data transmission module comprises: the system comprises a sound track sub-module, a sound trigger sub-module, a mixed thread sub-module, a sound hardware abstraction layer sub-module and a sound clip module.
In a further embodiment, the audio track sub-module is configured to control each of the soundtracks for transmitting music to thereby control the audio data at a particular location.
In a further embodiment, the audio trigger sub-module is configured to perform memory caching on the audio data in a memory sharing manner.
In a further embodiment, the mixing thread sub-module is configured to mix the audio data lines and output the mixed audio data lines.
In a further embodiment, an audio hardware abstraction layer sub-module receives an audio data stream and performs control output.
In a further embodiment, the sound clip module receives the audio signal and converts it, while outputting it to the DSP module.
In a further embodiment, the invention proposes to build a separate control hardware abstraction layer sub-module function, and the DSP control flow sends the message to the control hardware abstraction layer sub-module, thereby realizing the logic of separating the audio data control flow and the DSP control flow and solving the problem of high code coupling degree.
An optimization method of an optimization system for controlling a DSP on an android system is characterized in that a single control hardware abstraction layer sub-module function is built, and a DSP control flow sends a message to the control hardware abstraction layer sub-module, so that the logic of separating an audio data control flow and the DSP control flow is realized, and the problem of high code coupling degree is solved; the method comprises the following specific steps:
step 1, music software android APP starts to play music;
step 2, performing audio optimization;
step 21, firstly, an audio focus is required to be applied for in an audio manager module;
step 22, after the audio focus is applied, sending a DSP control channel message to a control hardware abstraction layer sub-module in an automobile audio service module through an audio system framework android HIDL;
step 23, the control hardware abstraction layer submodule forwards the channel information to the DSP module;
step 24, the DSP module selects a channel to play the sound source currently applied to the focus;
and step 3, the DSP module outputs the audio data to the hardware playing device.
In a further embodiment, after the application of the audio focus is completed, the current APP is notified to start playing music, that is, the APP writes audio data into the audio track sub-module, the audio data is written into the memory buffer area of the audio trigger sub-module in a memory sharing manner, after the audio data buffer area meets the corresponding condition, the thread of the mixing thread sub-module starts to write the audio data into the output layer Stream Out of the audio hardware abstraction layer sub-module, then the audio hardware abstraction layer sub-module in the audio data transmission module is controlled to open the sound card of the sound clip module, the audio data is written into the corresponding sound card, and finally the audio data is output to the hardware playing device through the DSP.
In a further embodiment, when setting the interface to set the sound effect, the APP invokes the corresponding interface of the car audio manager module, and then the car audio service module transmits the sound effect parameter set by the APP to the corresponding interface of the control hardware abstraction layer sub-module through the android HIDL of the audio system framework, and the control hardware abstraction layer sub-module transmits the sound effect parameter to the DSP module.
Working principle: when the android APP starts to play music, firstly, an audio frequency focus is required to be applied for by an audio frequency manager module, after the audio frequency focus is applied for, a DSP control channel message is sent to a control hardware abstraction layer sub-module in an automobile audio frequency service module through an android HIDL architecture, and the control hardware abstraction layer sub-module forwards the channel message to the DSP module, namely, one channel of the DSP is selected to play a sound source currently applied to the focus;
after the application of the sound source focus is finished, the current APP is informed to start playing music, namely, the APP writes audio data into the sound track sub-module, the audio data is written into the memory buffer area of the audio trigger sub-module in a memory sharing mode, after the corresponding condition is met in the audio data buffer area, the thread of the mixing thread sub-module starts to write the audio data into the output layer Stream Out of the audio hardware abstraction layer sub-module, then the audio hardware abstraction layer sub-module in the audio data transmission module is controlled to open a sound card of the sound clip module, the audio data is written into the corresponding sound card, and finally the audio data is output to the hardware playing equipment through the DSP;
when the interface is set for setting the sound effect, the APP calls the corresponding interface of the automobile audio manager module, and then the automobile audio service module transmits the sound effect parameters set by the APP to the corresponding interface of the control hardware abstraction layer sub-module through the android HIDL of the audio system framework, and the control hardware abstraction layer sub-module transmits the sound effect parameters to the DSP module.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the invention are not described in detail in order to avoid unnecessary repetition.
Claims (7)
1. An optimization system for controlling a DSP on an android system, comprising:
the control unit is used for playing music and music software APP on the android system;
a DSP unit for processing the audio data signal and transmitting the audio data and the control data;
the playing unit is used for playing music through the vehicle-mounted sound box;
the DSP unit includes:
the audio data transmission module is used for transmitting audio data signals output by the music software APP;
the DSP control transmission module is used for transmitting DSP control data signals output by the music software APP;
the DSP module is used for receiving and optimizing the audio data signals output by the audio data transmission module, receiving and optimizing the DSP control data signals output by the DSP control transmission module, and outputting the optimized audio data to the playing equipment;
the audio data transmission module comprises:
the audio hardware abstraction layer sub-module receives the audio data stream and performs control output;
the DSP control transmission module comprises:
the DSP channel control transmission channel sub-module is used for transmitting DSP channel control flow data;
the DSP sound effect control transmission channel sub-module is used for transmitting DSP sound effect control flow data;
and the control hardware abstraction layer sub-module is used for receiving the DSP control flow data and realizing the separation work of the audio data flow and the DSP control flow.
2. The optimization system for controlling a DSP on an android system of claim 1, wherein said DSP channel control transmission channel submodule comprises:
the audio manager module is used for receiving the DSP channel control flow, applying for an audio focus and outputting the audio focus after the audio focus is applied;
and the audio service module is used for receiving the control flow of the receiving DSP channel sent and output by the audio manager module and simultaneously providing volume control and volume mode selection services for users.
3. The optimization system for controlling a DSP on an android system of claim 1, wherein said DSP sound control transmission channel submodule comprises:
the automobile audio manager module is used for receiving the DSP sound effect control flow, setting and outputting various parameters of the audio sound effect;
the automobile audio service module is used for receiving the DSP sound effect control flow output by the automobile audio manager module and the DSP sound effect control flow output by the audio service module and outputting the DSP sound effect control flow to the DSP hardware abstraction layer submodule through the audio system frame.
4. The optimization system for controlling a DSP on an android system of claim 1, wherein said audio data transmission module further comprises:
a sound track sub-module for performing control of each sound part of the transmission music so as to control the audio data at a specific position;
the audio trigger sub-module is used for carrying out memory caching on the audio data in a memory sharing mode;
the mixing thread sub-module is used for mixing the audio data lines and then outputting the mixed audio data lines;
and the sound clip module is used for receiving and converting the audio signal and outputting the audio signal to the DSP module.
5. An optimization method for an optimization system for controlling a DSP on an android system as claimed in any one of claims 1 to 4, wherein the DSP control flow sends a message to the control hardware abstraction layer sub-module by building a separate control hardware abstraction layer sub-module function; the specific method comprises the following steps:
starting to play music;
performing audio optimization;
firstly, an audio focus is required to be applied to an audio manager module;
after the audio focus is applied, a DSP control channel message is sent to a control hardware abstraction layer sub-module in an automobile audio service module through an audio system framework android HIDL;
the control hardware abstraction layer submodule forwards the channel information to the DSP module by the control hardware abstraction layer submodule;
the DSP module selects a channel to play the sound source currently applied to the focus;
the DSP module outputs the audio data to the hardware playing device.
6. The optimizing method for controlling DSP optimizing system in android system as claimed in claim 5, wherein after the audio focus is applied, the current APP is informed to start playing music, i.e. the APP writes audio data into the audio track sub-module, the audio data is written into the memory buffer area of the audio trigger sub-module in a memory sharing mode, when the audio data buffer area meets the corresponding condition, the thread of the mixing thread sub-module starts to write audio data into the output layer of the audio hardware abstraction layer sub-module, then the hardware abstraction layer sub-module is controlled to open the sound card of the sound card sub-module, the audio data is written into the corresponding sound card, and finally the audio data is output to the hardware playing device through the DSP.
7. The optimizing method of optimizing system for controlling DSP on android system as recited in claim 5, wherein when setting interface to set sound effect, APP calls corresponding interface of automobile audio manager module, then automobile audio service module transmits sound effect parameter set by APP to corresponding interface of control hardware abstraction layer sub-module through framework android HIDL of audio system, and control hardware abstraction layer sub-module transmits sound effect parameter set by APP to DSP module.
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| CN115407961A (en) * | 2021-05-27 | 2022-11-29 | 华为技术有限公司 | Control method of audio focus and related device |
| CN113450835B (en) * | 2021-06-04 | 2023-03-21 | 佛吉亚歌乐电子(丰城)有限公司 | Method, equipment and storage medium for optimizing vehicle-mounted central control soundless time background noise |
| CN114265573B (en) * | 2021-12-24 | 2023-08-29 | 苏州智行畅联科技有限公司 | Sound effect control method and system and central control vehicle |
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