WO2023124002A1

WO2023124002A1 - Linux-based audio control method and apparatus, device, and storage medium

Info

Publication number: WO2023124002A1
Application number: PCT/CN2022/104793
Authority: WO
Inventors: 张兴涛
Original assignee: 北京字节跳动网络技术有限公司
Priority date: 2021-12-29
Filing date: 2022-07-11
Publication date: 2023-07-06
Also published as: CN113990354A; CN113990354B

Abstract

Provided are a Linux-based audio control method and apparatus, a device, and a storage medium. The method comprises: receiving an audio control instruction sent by an application program in a Linux system by means of a Linux audio service; controlling an audio device to execute an operation corresponding to the audio control instruction on the basis of the Linux audio service, and returning an execution result of the audio device back to the application program by means of the Linux audio service, wherein the Linux audio service is obtained via performing configuration on the basis of a conversion result of an Android-side audio path configuration file.

Description

Audio control method, device, equipment and storage medium based on Linux

This application claims priority to a Chinese patent application with application number 202111628456.9 filed with the China Patent Office on December 29, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present disclosure relates to the field of computer technology, for example, to a Linux-based audio control method, device, device, and storage medium.

Background technique

The Linux system is a set of Unix-like operating systems that are free to use and spread freely. been widely used. In addition, the Android system is currently the operating system with the highest proportion in the mobile terminal market, and has an excellent ecological environment in the field of mobile terminals.

At present, most audio devices are driven by alsa on Linux kernel-based operating systems. However, if the audio device manufacturer only provides Android drivers, it is necessary to adapt the alsa configuration to drive the audio device, which is very cumbersome and complicated.

Contents of the invention

The present disclosure provides a Linux-based audio control method, device, device, and storage medium to avoid the cumbersome and complicated situation that applications in the Linux system use audio devices when there is only an Android audio driver in the related art, and realize Convenient audio control.

The present disclosure provides a Linux-based audio control method applied to a Linux system, the method comprising:

Receive the audio control instruction sent by the application program in the Linux system through the Linux audio service;

Based on the Linux audio service, control the audio device to execute the operation corresponding to the audio control instruction, and return the execution result of the audio device to the application program through the Linux audio service;

Wherein, the Linux audio service is configured based on the audio channel configuration file on the Android side.

The present disclosure also provides a Linux-based audio control device, including:

The receiving module is configured to receive the audio control instruction sent by the application program in the Linux system through the Linux audio service;

The control module is configured to control the audio device to execute the operation corresponding to the audio control instruction based on the Linux audio service, and return the execution result of the audio device to the application program through the Linux audio service;

The present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, it implements any one of the above-mentioned Linux-based Steps of an audio control method.

The present disclosure also provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the above-mentioned Linux-based audio control methods are implemented.

The present disclosure also provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps of any one of the Linux-based audio control methods described above are implemented.

Description of drawings

FIG. 1 is one of the schematic flow charts of the Linux-based audio control method provided by the present disclosure;

FIG. 2 is a schematic structural diagram of a Linux-based audio control method provided by the present disclosure;

FIG. 3 is the second schematic flow diagram of the Linux-based audio control method provided by the present disclosure;

FIG. 4 is the third schematic flow diagram of the Linux-based audio control method provided by the present disclosure;

FIG. 5 is the fourth schematic flow diagram of the Linux-based audio control method provided by the present disclosure;

FIG. 6 is a structural diagram of a Linux-based audio control device provided by the present disclosure;

FIG. 7 is a schematic structural diagram of an electronic device provided by the present disclosure.

Detailed ways

In related technologies, on an operating system based on the Linux kernel, the audio device is usually driven by alsa. In the case that the audio device manufacturer only provides the Android driver, if the application program in the Linux system needs to use the audio device, it needs to be adapted to the Android device. audio path configuration file, for example, create the alsa profile and path in the corresponding audio path configuration file to use the audio device, which is very cumbersome and complicated.

In order to facilitate understanding of the following embodiments, the application scenarios of the present disclosure are illustrated below.

For example, the Linux system is installed in the terminal device, that is, the operating system of the terminal device is an operating system based on the Linux kernel. Meanwhile, any application program (Application, APP) is installed in the terminal device, and the application program needs to use an audio device, and the audio device can only be controlled through an Android audio driver. Wherein, the terminal device may be a mobile phone, a tablet computer, a notebook computer, a desktop computer, a server, an embedded system, etc., which are not specifically limited here.

The present disclosure provides a Linux-based audio control method applied to a Linux system. Fig. 1 is one of the flow diagrams of the Linux-based audio control method provided by the present disclosure. As shown in Fig. 1, the Linux-based audio control method provided by the present disclosure includes the following steps 110-120:

Step 110, through the Linux audio service, receive the audio control instruction sent by the application program in the Linux system.

Wherein, the Linux audio service is an audio framework in the Linux system, which is used for operation by applications in the Linux system, that is, it is an audio service process of Linux. Additionally, this Linux audio service resides in the user space of the Linux system.

Here, the Linux audio service is an extensible audio framework that supports plug-in extensions.

In one embodiment, the Linux audio service is the pulseaudio audio framework. The pulseaudio audio framework supports plugin extensions, for example, a droid plugin can be implemented.

In another embodiment, the Linux audio service is the pipewire audio framework. The pipewire audio framework supports plugin extensions, for example, a droid plugin can be implemented.

In one embodiment, before the above step 110, the Linux-based audio control method further includes:

After the Linux system is started, start the Linux audio service.

Wherein, the audio control instruction includes, but is not limited to: an instruction to start playing, an instruction to stop playing, an instruction to start recording, an instruction to turn off recording, and the like. Certainly, the audio control instruction includes all operation instructions of the audio device, or the audio control instruction includes instructions corresponding to all application program interfaces (Application Program Interface, API) of the Android audio service on the Android side.

Step 120, based on the Linux audio service, control the audio device to execute the operation corresponding to the audio control instruction, and return the execution result of the audio device to the application program through the Linux audio service;

Here, the way to obtain the Linux audio service is: read the audio channel configuration file on the Android side through the audio plug-in, analyze the audio channel configuration file, obtain the analysis result, and configure the Linux audio service based on the analysis result.

Wherein, the execution result includes a control result and a data transmission result, and the data transmission result includes but not limited to: audio data and audio device configuration parameters. For example, the execution result includes but not limited to: the execution result of the start playing instruction, the execution result of the stop playing instruction, the execution result of the start recording instruction, the execution result of the close recording instruction and so on.

Here, the execution result of the start playing instruction includes an indication of a successful start of playing or an indication of failure of playing start. The execution result of the stop playing instruction includes an indication of success in stopping playing or an indication of failure in stopping playing. The execution result of the command to start recording includes an indication that the recording has been started successfully or an indication that the recording has been started failed. The execution result of the record-off command includes an indication of successful record-off and audio data obtained from the recording, or an indicator of record-off failure.

In one embodiment, if the audio control command is a start playing command, the audio device is controlled to be turned on, and the audio data to be played is played, and the execution result of whether the audio device is successfully played and started is returned to the application program through the Linux audio service.

For example, if the audio control instruction is a start playback instruction, the audio device is controlled to be turned on, and the audio data to be played is played, and the playback start success flag or the playback start failure flag is returned to the application program through the Linux audio service.

It should be noted that, if the application program needs to play the target audio data generated by it, the target audio data is transmitted to the audio device for playback.

In another embodiment, if the audio control instruction is a stop playing instruction, control the audio device to close, and stop playing the audio, and return the execution result of whether the audio device is successfully played and closed to the application program through the Linux audio service.

For example, if the audio control instruction is an instruction to stop playing, control the audio device to shut down, and stop playing the audio, and return the flag of successful playback stop or failure flag to the application program through the Linux audio service.

In another embodiment, if the audio control command is a recording start command, the audio device is controlled to perform the recording operation, and the execution result of whether the recording is successfully started is returned to the application program through the Linux audio service.

For example, if the audio control command is a recording start command, the audio device is controlled to perform the recording operation, and the audio data recorded by the audio device in real time and the recording start success mark are returned to the application program through the Linux audio service, or the recording start failure mark is passed to the Linux The audio service returns to the application.

In another embodiment, if the audio control command is a recording close command, the audio device is controlled to close the recording operation, and the execution result of whether the recording is successfully closed is returned to the application program through the Linux audio service.

For example, if the audio control command is a recording close command, the audio device is controlled to close the recording operation, and the record closing success mark is returned to the application program, or the recording close failure mark is returned to the application program through the Linux audio service.

In addition, the Linux system will communicate with the Android audio service on the Android side, and the communication lines are basically the same as the audio control commands, so we won't repeat them here. That is, the present disclosure can not only complete the transmission of control instructions, but also complete the transmission of data. The transmitted data includes audio data, configuration parameters of audio equipment, and so on.

Embodiments of the present disclosure will be described by way of example for easy understanding. When an application uses an audio device in a Linux system, the application generates an audio control command, and then receives the audio control command sent by the application through the Linux audio service, and then forwards the audio control command from the Linux audio service to the Android audio service, to control the audio device to execute the operation corresponding to the audio control command through the Android audio service and the Android audio driver, and then return the execution result of the audio device to the Android audio driver and the Android audio service; through the audio plug-in, the execution result Forward from the Android audio service to the Linux audio service; return the execution result from the Linux audio service to the application. Furthermore, in one case, an Android container is created, and then the Linux audio service is started, and the Android audio service is deployed in the Android container. Can refer to Fig. 2, in Fig. 2 the embodiment of the present disclosure has been divided into layers, application program, Linux audio service, audio plug-in, Android container belong to user space layer, Android audio driver (audio driver) belongs to kernel layer, and audio equipment belongs to hardware layer.

According to the Linux-based audio control method according to the embodiment of the present disclosure, the method is applied to the Linux system, and receives the audio control instruction sent by the application program in the Linux system through the Linux audio service; based on the audio service, controls the audio device to execute the corresponding audio control instruction Operation, and return the execution result of the audio device to the application program through the Linux audio service; wherein, the Linux audio service is configured based on the audio path configuration file on the Android side. Through the above method, the embodiment of the present disclosure receives the audio control command sent by the application program through the Linux audio service, and multiplexes the audio path configuration file on the Android side, so as to configure the Linux audio service according to the audio path configuration file, so that the application program can pass The Linux audio service uses the audio device, so that when only the Android audio driver exists, the application can use the audio device without adapting the audio channel configuration file under Android, so as to achieve convenient audio control.

For example, based on the above embodiments, another embodiment of the Linux-based audio control method of the present disclosure is proposed. Before the above step 120, it also includes:

Step 130, through the Linux audio service, determine the audio control API corresponding to the audio control command, and the audio control API is used to access the Android audio service.

For example, based on the conversion result of the configured audio channel configuration file, the Linux audio service determines the audio control API corresponding to the audio control command, and then accesses the Android audio service on the Android side based on the audio control API, thereby realizing the Android audio system between the Linux system and the Android side. The purpose of the service to communicate, and then realize the purpose that the Linux system can use the Android audio driver.

Based on the above embodiment, as shown in FIG. 3, in the above step 120, based on the Linux audio service, the audio device is controlled to perform the operation corresponding to the audio control instruction, including:

Step 121, forward the audio control API from the Linux audio service to the Android audio service through an audio plug-in.

Step 122, through the Android audio service, control the audio device to perform the operation corresponding to the audio control instruction.

Wherein, the audio plug-in is a plug-in extended by the Linux audio service. The audio plug-in can be a droid plugin. This audio plugin resides in user space on Linux.

It should be noted that, when the audio control API passes through the audio plug-in, it can be processed or not, which is specifically set according to actual needs, and details will not be described here.

For example, if the audio control instruction is a start playback instruction, the audio control API corresponding to the start playback instruction is forwarded from the Linux audio service to the Android audio service, so that the Android audio service controls the audio device to perform the operation corresponding to the start playback instruction.

For example, if the audio control instruction is a stop playback instruction, the audio control API corresponding to the stop playback instruction is forwarded from the Linux audio service to the Android audio service, so that the Android audio service controls the audio device to perform the operation corresponding to the stop playback instruction.

For example, if the audio control instruction is an instruction to enable recording, the audio control API corresponding to the instruction to enable recording is forwarded from the Linux audio service to the Android audio service, so that the Android audio service controls the audio device to perform the operation corresponding to the instruction to enable recording.

For example, if the audio control instruction is an instruction to close the recording, the audio control API corresponding to the instruction to close the recording is forwarded from the Linux audio service to the Android audio service, so that the Android audio service controls the audio device to perform the operation corresponding to the instruction to close the recording.

For example, before the above step 121, the method also includes:

After the Linux system is started, start the Linux audio service and load the audio plug-in.

For example, after the Linux system starts, start the Linux audio service and load the audio plug-in; read the audio path configuration file on the Android side through the audio plug-in, and convert the audio path configuration file to obtain the conversion result; configure the Linux audio based on the conversion result Serve.

In one embodiment, the Linux system includes a user space layer; the user space layer includes the application program, the Linux audio service, the audio plug-in, and the Android audio service.

For example, create an Android container and deploy the Android audio service to the Android container. The Android audio service may include AudioFlinger service, Audio Server, Audio HAL Service and the like. Refer to FIG. 2 , which will not be repeated here.

According to the Linux-based audio control method according to an embodiment of the present disclosure, the method is applied to a Linux system, and the audio control API corresponding to the audio control command is determined through the Linux audio service, and the audio control API is used to access the Android audio driver; through the audio plug-in, the The audio control API is forwarded from the Linux audio service to the Android audio service; through the Android audio service, the audio device is controlled to perform the corresponding operation of the audio control command. In the above way, the audio control command is forwarded through the audio plug-in to use the audio device through the Android audio service, so that the application can use the audio device through the Android audio service, so that when only the Android audio driver exists, the application The audio device can be used without adapting the audio channel configuration file under Android, so as to realize convenient audio control.

For example, based on any of the above embodiments, another embodiment of the Linux-based audio control method of the present disclosure is proposed. In this embodiment, in the above step 120, the execution result of the audio device is returned to the application program through the Linux audio service, including the following steps 123-125:

Step 123, returning the execution result of the audio device to the Android audio service.

Step 124, forward the execution result from the Android audio service to the Linux audio service through the audio plug-in.

Step 125, returning the execution result from the Linux audio service to the application program.

It should be noted that, when the execution result passes through the audio plug-in and the Linux audio service, it can be processed or not. The specific setting is based on actual needs, and details will not be described here.

For ease of understanding, the audio control command is described by taking the start playback command as an example. The signaling interaction diagram of the application, Linux audio service, audio plug-in, and Android audio service is shown in Figure 4:

S401, the application program sends an instruction to start playing and audio data to the Linux audio service.

S402, the Linux audio service sends the start playing instruction and audio data to the audio plug-in.

S403, the audio plug-in sends the start playing instruction and audio data to the Android audio service.

S404. The Android audio service returns an execution result to the audio plug-in, where the execution result includes: an indication of a successful playback start or an indication of a failure to start playback. Here, the execution result is described by taking the successful indication of playback start as an example.

S405, the audio plug-in returns the playback start success indication to the Linux audio service.

S406, the Linux audio service returns the playback start success indication to the application program.

After playing for a period of time, the audio control instruction is described by taking the instruction of stopping playback as an example.

S407, the application program sends a stop playing instruction to the Linux audio service.

S408, the Linux audio service sends a playback stop instruction to the audio plug-in.

S409, the audio plug-in sends an instruction to stop playing to the Android audio service.

S410, the Android audio service returns an execution result to the audio plug-in, where the execution result includes: an indication of success in playback stop or an indication of failure in playback stop. Here, the execution result is described by taking the playback stop success flag as an example.

S411, the audio plug-in returns a playback stop success indication to the Linux audio service.

S412, the Linux audio service returns a playback stop success indication to the application program.

For ease of understanding, the audio control command is described by taking the start of the recording command as an example. The signaling interaction diagram of the application, Linux audio service, audio plug-in, and Android audio service is shown in Figure 5:

S501. The application program sends an instruction to start recording to the Linux audio service.

S502. The Linux audio service sends an instruction to start recording to the audio plug-in.

S503. The audio plug-in sends an instruction to start recording to the Android audio service.

S504. The Android audio service returns an execution result to the audio plug-in, wherein the execution result includes: an indication of successful recording start and recording data obtained by real-time recording or an indication of failure to start recording. Here, the execution result will be explained by taking the recording start success flag and recording data as an example.

S505. The audio plug-in returns the recording start success identification and recording data to the Linux audio service.

S506, the Linux audio service returns the recording start success identification and recording data to the application program.

After recording for a period of time, the audio control instruction is described by taking the instruction of turning off the recording as an example.

S507, the application program sends an instruction to close the recording to the Linux audio service.

S508, the Linux audio service sends an instruction to close the recording to the audio plug-in.

S509, the audio plug-in sends an instruction to close the recording to the Android audio service.

S510. The Android audio service returns an execution result to the audio plug-in, where the execution result includes: an indication of success in closing recording or an indication of failure in closing recording. Here, the execution result is described by taking the record closing success flag as an example.

S511. The audio plug-in returns an indication that the recording is closed successfully to the Linux audio service.

S512. The Linux audio service returns an indication that the recording is closed successfully to the application program.

In addition, other audio control instructions are also included, and the execution process of other audio control instructions is basically the same as that of the above audio control instructions, and will not be repeated here.

For example, before the above step 123, the method also includes:

In one case, after the Linux system is started, the Android container is first created, and the Android audio service is started, and then the Linux audio service is started, and the audio plug-in is loaded.

In another case, after the Linux system is started, start the Linux audio service, and load the audio plug-in, and then directly load the Audio HAL library through the libhybris technology, and then directly operate the audio hardware.

According to the Linux-based audio control method according to an embodiment of the present disclosure, the method is applied to a Linux system, and the execution result of the audio device is returned to the Android audio service; through the audio plug-in, the execution result is forwarded from the Android audio service to the Linux audio service; Execution results are returned to the application from the Linux audio service. Through the above method, the execution result of the audio device is forwarded through the audio plug-in, and the execution result is returned through the Linux audio service, so that the application program can receive the returned execution result, and the application program in the Linux system can use the Android audio service. Use the audio device so that when only the Android audio driver exists, the application can use the audio device and return the execution result without adapting the audio channel configuration file under Android, so as to achieve convenient audio control.

For example, based on any of the above embodiments, another embodiment of the Linux-based audio control method of the present disclosure is proposed. In this embodiment, before the above step 110, the method further includes:

Step 140, read the audio channel configuration file on the Android side through the audio plug-in.

Step 150, configure Linux audio service based on the audio channel configuration file.

For example, through the audio plug-in, read the audio channel configuration file corresponding to the audio service on the Android side, then analyze the audio channel configuration file, and convert the audio channel configuration file based on the analysis result to convert it to the available Linux audio service Audio channel configuration.

For example, before the above step 140, the method also includes:

Step 160, after the Linux system starts, start the Linux audio service and load the audio plug-in.

According to the Linux-based audio control method of the embodiment of the present disclosure, the method is applied to the Linux system, reads the audio path configuration file on the Android side through the audio plug-in, and converts the audio path configuration file to obtain the conversion result; based on the The conversion result configures the Linux audio service. Through the above method, the embodiment of the present disclosure multiplexes the audio path configuration file on the Android side through the audio plug-in, so as to configure the Linux audio service according to the audio path configuration file on the Android side, so that the application program can use the audio device through the Linux audio service, In the case that only the Android audio driver exists, the application program can use the audio device without adapting the audio channel configuration file under Android, thereby realizing convenient audio control.

For example, based on any of the above embodiments, another embodiment of the Linux-based audio control method of the present disclosure is proposed. In this embodiment, the Linux audio service communicates with the Android audio service on the Android side through an inter-process communication channel.

Wherein, the inter-process communication channel can realize data transmission and information transmission between processes. For example, the inter-process communication channel realizes the transmission of control commands and processing data between the Linux audio service and the Android audio service. The processed data includes, but is not limited to: audio data, configuration parameters of audio equipment, and the like.

Inter-Process Communication (IPC) provides a variety of inter-process communication methods, such as binder, socket (socket), shared memory (shared memory), etc.

For example, the Linux audio service communicates with the Android audio service on the Android side through an IPC channel.

In an embodiment, the Linux audio service communicates with the Android audio service on the Android side through a binder. For example, the Linux audio service communicates with the Android audio service on the Android side via libgbinder. libgbinder is a Linux implementation of binder, which is used for program-to-program communication between the Linux system and Android.

In another embodiment, the Linux audio service communicates with the Android audio service on the Android side through a socket.

In another embodiment, the Linux audio service communicates with the Android audio service on the Android side through shared memory.

According to the Linux-based audio control method of the embodiment of the disclosure, the method is applied to the Linux system, and the embodiment of the disclosure uses the inter-process communication channel to realize the communication between the Linux audio service and the Android audio service, so as to be able to send the audio control command generated by Linux Provide Android audio service, and can perform data communication between Linux and Android, so that the application can use the audio device when only the Android audio driver exists, and there is no need to adapt the audio channel configuration file under Android, so as to achieve Convenient audio control.

The following describes the Linux-based audio control device provided by the present disclosure. The Linux-based audio control device described below and the Linux-based audio control method described above can be referred to each other, and the repetitions will not be repeated, as shown in FIG. 6 As shown, the Linux-based audio control device includes:

The receiving module 610 is configured to receive the audio control instruction sent by the application program in the Linux system through the Linux audio service;

The control module 620 is configured to control the audio device to execute the operation corresponding to the audio control instruction based on the Linux audio service, and return the execution result of the audio device to the application program through the Linux audio service;

According to the audio control device based on Linux in the embodiment of the present disclosure, the audio control instruction sent by the application program in the Linux system is received through the Linux audio service; based on the audio service, the audio device is controlled to perform the operation corresponding to the audio control instruction, and the audio device's The execution result is returned to the application program through the Linux audio service; wherein, the Linux audio service is configured based on the audio channel configuration file on the Android side. Through the above method, the embodiment of the present disclosure receives the audio control command sent by the application through the Linux audio service, and multiplexes the audio path configuration file on the Android side, so as to configure the Linux audio service according to the audio path configuration file on the Android side, and then makes the application The program can use the audio device through the Linux audio service, so that when only the Android audio driver exists, the application can use the audio device, and there is no need to adapt the audio channel configuration file under Android, so as to achieve convenient audio control.

For example, the Linux-based audio control device also includes:

The determination module is configured to determine the audio control API corresponding to the audio control instruction through the Linux audio service, and the audio control API is used to access the Android audio service.

For example, the control module 620 is also configured to forward the audio control API from the Linux audio service to the Android audio service through an audio plug-in; through the Android audio service, control the audio device to execute the audio control instruction corresponding operation.

For example, the control module 620 is also configured to return the execution result of the audio device to the Android audio service; forward the execution result from the Android audio service to the Linux audio service through an audio plug-in; The execution result is returned to the application program from the Linux audio service.

For example, the Linux-based audio control device also includes:

The file reading module is set to read the audio channel configuration file on the Android side through the audio plug-in;

The service configuration module is configured to configure the Linux audio service based on the audio channel configuration file.

For example, the Linux-based audio control device also includes:

The service startup module is configured to start the Linux audio service and load the audio plug-in after the Linux system is started.

For example, the Linux audio service communicates with the Android audio service on the Android side through an inter-process communication channel.

FIG. 7 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 7, the electronic device may include: a processor (processor) 710, a communication interface (Communications Interface) 720, a memory (memory) 730 and a communication bus 740, Wherein, the processor 710 , the communication interface 720 , and the memory 730 communicate with each other through the communication bus 740 . The processor 710 can call the logic instruction in the memory 730 to execute the audio control method based on Linux, the method includes: receiving the audio control instruction sent by the application program in the Linux system through the Linux audio service; , controlling the audio device to execute the operation corresponding to the audio control instruction, and returning the execution result of the audio device to the application program through the Linux audio service; wherein, the Linux audio service is based on the audio channel on the Android side The configuration file is obtained by configuring.

In addition, the above-mentioned logic instructions in the memory 730 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the essence of the technical solution of the present disclosure or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in multiple embodiments of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc and other media that can store program codes. .

On the other hand, the present disclosure also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can Executing the audio control method based on Linux provided by the above-mentioned multiple methods, the method includes: receiving audio control instructions sent by the application program in the Linux system through the Linux audio service; based on the Linux audio service, controlling the audio device to execute the The operation corresponding to the audio control instruction, and the execution result of the audio device is returned to the application program through the Linux audio service; wherein, the Linux audio service is configured based on the audio path configuration file on the Android side to obtain of.

In yet another aspect, the present disclosure also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the audio control method based on Linux provided by the above-mentioned various methods, The method includes: receiving an audio control instruction sent by an application in the Linux system through a Linux audio service; based on the Linux audio service, controlling an audio device to perform an operation corresponding to the audio control instruction, and converting the audio device The execution result is returned to the application program through the Linux audio service; wherein, the Linux audio service is configured based on the audio channel configuration file on the Android side.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that multiple implementations can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solutions or the part that contributes to related technologies can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, disk , CD, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in multiple embodiments or some parts of the embodiments.

Claims

A Linux-based audio control method applied to a Linux system, the method comprising:

Receive the audio control instruction sent by the application program in the Linux system through the Linux audio service;

Based on the Linux audio service, control the audio device to execute the operation corresponding to the audio control instruction, and return the execution result of the audio device to the application program through the Linux audio service;

Wherein, the Linux audio service is configured based on the audio channel configuration file on the Android side.
The method according to claim 1, before controlling the audio device based on the Linux audio service to perform the operation corresponding to the audio control instruction, further comprising:

Through the Linux audio service, determine the audio control API corresponding to the audio control instruction, and the audio control API is used to access the Android audio service.
The method according to claim 2, wherein the controlling the audio device to perform the operation corresponding to the audio control instruction based on the Linux audio service includes:

The audio control API is forwarded from the Linux audio service to the Android audio service through an audio plug-in;

Through the Android audio service, the audio device is controlled to perform the operation corresponding to the audio control instruction.
The method according to claim 1, wherein the returning the execution result of the audio device to the application program through the Linux audio service includes:

Return the execution result of the audio device to the Android audio service;

Through the audio plug-in, the execution result is forwarded from the Android audio service to the Linux audio service;

Returning the execution result from the Linux audio service to the application program.
According to the method according to any one of claims 1 to 4, before receiving the audio control instruction sent by the application program in the Linux system through the Linux audio service, it also includes:

Read the audio channel configuration file on the Android side through the audio plug-in;

Configure the Linux audio service based on the audio path configuration file.
The method according to claim 5, before reading the audio channel configuration file on the Android side through the audio plug-in, it also includes:

After the Linux system is started, start the Linux audio service and load the audio plug-in.
The method according to any one of claims 1 to 4, wherein the Linux audio service communicates with the Android audio service on the Android side through an inter-process communication channel.
A Linux-based audio control device comprising:

The receiving module is configured to receive the audio control instruction sent by the application program in the Linux system through the Linux audio service;

The control module is configured to control the audio device to execute the operation corresponding to the audio control instruction based on the Linux audio service, and return the execution result of the audio device to the application program through the Linux audio service;

Wherein, the Linux audio service is configured based on the audio channel configuration file on the Android side.
An electronic device, comprising a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the program, the computer program described in any one of claims 1 to 7 is implemented. Describe the steps of the Linux-based audio control method.
A non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the Linux-based audio control method according to any one of claims 1 to 7 are realized.