CN112948003A - Method and equipment for switching operating systems of dual-android terminal - Google Patents
Method and equipment for switching operating systems of dual-android terminal Download PDFInfo
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- CN112948003A CN112948003A CN201911171323.6A CN201911171323A CN112948003A CN 112948003 A CN112948003 A CN 112948003A CN 201911171323 A CN201911171323 A CN 201911171323A CN 112948003 A CN112948003 A CN 112948003A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4406—Loading of operating system
- G06F9/441—Multiboot arrangements, i.e. selecting an operating system to be loaded
Abstract
The application discloses a method for switching operating systems of a dual-android terminal, which comprises the following steps: for the currently running audio and video playing application program in the operating system to be switched to the background in the dual-android terminal, pausing the audio and video playing application program in a system broadcasting mode; and the audio and video playing application program suspends audio and video playing according to the system broadcast and releases the occupied audio and video hardware resources. Corresponding to the method, the application also discloses a dual-android terminal device. By applying the technical scheme disclosed by the application, the normal operation of the upper application program can be ensured when the operating system is switched.
Description
Technical Field
The application relates to the technical field of intelligent terminals, in particular to a method and equipment for switching operating systems of dual android terminals.
Background
Android, a common unofficial Chinese name of Android, is an Open source code mobile operating system based on a Linux kernel, is continuously led and developed by Open Handset Alliance (OHA) established by Google, and is mainly designed for touch screen mobile devices, such as smart phones, tablet computers and other portable devices.
In general, an android mobile phone has only one operating system, but with the development of technology, some intelligent terminals with dual android systems are also available. However, this is actually a dual-domain intelligent terminal, and such a terminal can still only start one android operating system at a time, uses two users, and does not start two android systems. Such a handover system is not really a dual system handover. For example, in the case of audio/video playing, a dual android system intelligent terminal that simultaneously runs two operating systems needs to be able to realize basic functions of audio/video playing, recording, and the like of a single system, and at the same time, it is also necessary to ensure normal use of audio/video functions when switching between the two systems. The existing dual-android system intelligent terminal cannot achieve the target, and errors of upper-layer applications can be caused when the system is switched.
Disclosure of Invention
The application provides a method and equipment for switching an operating system of a dual-android terminal, so that normal operation of an upper application program during switching of the operating system is guaranteed.
The application discloses a method for switching operating systems of a dual-android terminal, which comprises the following steps:
for the currently running audio and video playing application program in the operating system to be switched to the background in the dual-android terminal, pausing the audio and video playing application program in a system broadcasting mode;
and the audio and video playing application program suspends audio and video playing according to the system broadcast and releases the occupied audio and video hardware resources.
Preferably, the method further comprises:
and releasing audio and video hardware resources which are not occupied by the audio and video playing application program through a hardware abstraction HAL layer.
Preferably, said releasing by the HAL layer comprises:
starting a first monitoring thread for monitoring a system switching event at an audio module of a HAL layer;
when the first monitoring thread monitors that the operating system is switched from a foreground to a background, releasing all audio hardware resources currently occupied by the operating system, and making an upper layer write data operation and a read data operation overhead;
and when the operating system is switched back to the foreground from the background, the data writing operation and the data reading operation of the upper layer are switched on again.
Preferably, the suspending the audio/video playing application program in a system broadcast manner specifically includes:
sending system broadcast to the currently running audio playing application program in the operating system to be switched to the background, and informing the audio playing application program to pause playing;
and the analog power key enables the operating system to be switched to the background to enter a dormant state, so that the video playing application program currently running in the operating system to be switched to the background is paused.
Preferably, while the audio/video playing application is paused in the system broadcast mode, the method further includes:
and starting a second monitoring thread for monitoring a system switching event at the media playing server, and informing the kernel that the audio and video hardware resources are released when the second monitoring thread monitors that the operating system to be switched to the background is switched from the foreground to the background and all the audio and video playing application programs stop playing.
Preferably, the method further comprises:
setting a switching application program, wherein the switching application program is used for detecting the following two abnormal conditions: the background operating system is not started completely when an incoming call event occurs;
when the two abnormal conditions are detected, the switching of the operating system is not allowed.
The application also discloses two tall and erect terminal equipment of ann, include: a control module and an audio-video playing application program;
the control module is used for sending system broadcast to the currently running audio and video playing application program in the operating system to be switched to the background in the dual-android terminal and informing the audio and video playing application program of pausing playing;
and the audio and video playing application program is used for pausing audio and video playing according to the system broadcast of the control module and releasing the occupied audio and video hardware resources.
Preferably, the equipment further comprises a HAL layer audio module;
the HAL layer audio module is used for starting a first monitoring thread for monitoring a system switching event;
when the first monitoring thread monitors that the operating system is switched from a foreground to a background, releasing all audio hardware resources currently occupied by the operating system, and making an upper layer write data operation and a read data operation overhead;
and when the operating system is switched back to the foreground from the background, the data writing operation and the data reading operation of the upper layer are switched on again.
Preferably, the control module is specifically configured to:
sending system broadcast to the currently running audio playing application program in the operating system to be switched to the background, and informing the audio playing application program to pause playing;
the simulation power key enables the operating system to be switched to the background to enter a dormant state, so that the video playing application program currently running in the operating system to be switched to the background is paused;
and starting a second monitoring thread for monitoring a system switching event at the media playing server, and informing the kernel that the audio and video hardware resources are released when the second monitoring thread monitors that the operating system to be switched to the background is switched from the foreground to the background and all the audio and video playing application programs stop playing.
Preferably, the device further comprises a switching application;
the handover application is used to detect the following two abnormal situations: the background operating system is not started completely when an incoming call event occurs; when the two abnormal conditions are detected, the control module is informed to not switch the operating system.
It can be seen from the above that, the technical scheme provided by the application is applied to the intelligent terminal running the dual-android operating system, and the currently running audio and video playing application program in the background operating system can be suspended in a system broadcasting manner, so that the audio and video playing application programs can actively release the audio and video hardware resources occupied by the audio and video playing application program, the normal running of audio and video services in a new foreground operating system after the system is switched is ensured, and the two operating systems can normally use audio and video hardware devices such as cameras, recorders and speakers.
In addition, for audio and video hardware resources occupied by non-upper-layer application, a monitoring thread for monitoring a system switching event is started in an HAL layer audio module, all audio hardware resources occupied by an operating system at present are released when the operating system is monitored to be switched from a foreground to a background, and data writing operation and data reading operation of an upper layer are built on the air, so that the occupied audio hardware resources are actively released; and when the operating system is switched back to the foreground from the background, the system can enable the corresponding audio hardware resources again by switching on the write data operation and the read data operation of the upper layer again.
Drawings
Fig. 1 is a schematic flow chart of a method for switching an operating system of a dual-android terminal according to the present application;
fig. 2 is a schematic diagram of a composition structure of a dual-android terminal according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail below by referring to the accompanying drawings and examples.
The inventors of the present application consider that the main problems of the prior art are: the audio and video frames of two sets of operating systems in the dual-android system intelligent terminal have two examples in a user mode, and at the bottom layer, the dual systems share unique media hardware resources, which comprises the following steps: in order to solve the problem of mutual exclusion of hardware resources during system switching, a policy needs to be designed to ensure that an operating system switched into a background releases all media hardware resources, such as a Microphone (MIC), a Speaker (Speaker), a hardware Codec (Codec).
The main reasons for the above problems are: the current dual operating system technology is based on a container (container), each operating system is in one container, two operating systems are isolated, only one kernel is provided, all hardware resources are also provided, and in view of the above characteristics, the technical problems to be solved by the application are mainly as follows: the background-switched operating system needs to correctly release audio and video hardware resources such as a camera, a recorder and a loudspeaker, and simultaneously needs to ensure that the upper application state is free from errors.
Therefore, the application solves the problems of the prior art from the following two aspects:
1. how to actively release audio and video hardware resources in a domain to be switched to a background;
2. how to re-enable the audiovisual hardware resources in the domain that is newly switched to the foreground.
The method comprises the following steps of for releasing audio and video hardware resources, wherein the following two technical means are used for solving the problem:
1. and for the audio and video playing application programs on the upper layer, pausing the audio and video playing application programs in a system broadcasting mode and releasing audio and video hardware resources. That is to say: for the audio and video playing application programs which are currently running in an upper layer (namely, an application layer) in an operating system to be switched to a background, the audio and video playing application programs are paused in a system broadcasting mode, and the audio and video playing application programs release occupied audio and video hardware resources.
2. Audio and video hardware resources occupied by non-upper layer applications (namely, non-audio and video playing application programs) are released through a Hardware Abstraction Layer (HAL). That is to say: and for the currently used audio and video hardware resources in the operating system to be switched to the background, if the audio and video hardware resources cannot be forcibly released by the system from the application layer, the audio and video hardware resources are released through the HAL layer.
Fig. 1 is a schematic flow chart of a method for switching an operating system of a dual-android terminal according to the present application, and referring to fig. 1, the method includes:
step 101: and for the currently running audio and video playing application program in the operating system to be switched to the background in the dual android terminal, pausing the audio and video playing application program in a system broadcasting mode.
The pausing of the audio/video playing application program in a system broadcast mode may specifically include:
sending system broadcast to the currently running audio playing application program in the operating system to be switched to the background, and informing the audio playing application program to pause playing;
and enabling the operating system to be switched to the background to enter a dormant state by a Power (Power) simulating key, and enabling a video playing application program which is currently running in the operating system to be switched to the background to pause playing.
Step 102: and the audio and video playing application program suspends audio and video playing according to the system broadcast and releases the occupied audio and video hardware resources.
Preferably, when the audio/video playing application program is paused in a system broadcasting manner, a monitoring thread for monitoring a system switching event can be started at the media playing service terminal, and when the monitoring thread monitors that the operating system to be switched to the background is switched from the foreground to the background and all the audio/video playing application programs stop playing, the kernel is notified that the audio/video hardware resources are released.
On the basis of the method shown in fig. 1, for the audio/video hardware resources occupied by the non-upper-layer application (i.e. the non-audio/video playing application program), the application releases the resources through the HAL layer, and specifically includes:
starting a monitoring thread for monitoring a system switching event at an audio module of a HAL layer;
when the monitoring thread monitors that the operating system is switched from a foreground to a background, all audio hardware resources currently occupied by the operating system are released, and the data writing operation and the data reading operation of an upper layer are built on the air;
and when the operating system is switched back to the foreground from the background, the data writing operation and the data reading operation of the upper layer are switched on again.
In addition, in order to ensure the integrity of the telephone, the dual system does not allow switching under the condition of incoming call, and the switching is allowed after the incoming call is stopped. For this special case, the application proposes the following solutions:
setting a switching application program, wherein the switching application program is used for detecting the following two abnormal conditions: 1) an incoming call event exists; 2) the background operating system is not started completely; when the two abnormal conditions are detected, the switching of the operating system is not allowed.
Corresponding to the above method, the present application further discloses a corresponding dual android terminal device, which has a composition structure as shown in fig. 2 and at least includes: a control module and an audio-video playing application program; wherein:
the control module is used for sending system broadcast to the currently running audio and video playing application program in the operating system to be switched to the background in the dual-android terminal and informing the audio and video playing application program of pausing playing;
and the audio and video playing application program is used for pausing audio and video playing according to the system broadcast of the control module and releasing the occupied audio and video hardware resources.
Preferably, the equipment also comprises a HAL layer audio module;
the HAL layer audio module is used for starting a first monitoring thread for monitoring a system switching event;
when the first monitoring thread monitors that the operating system is switched from a foreground to a background, releasing all audio hardware resources currently occupied by the operating system, and making an upper layer write data operation and a read data operation overhead;
and when the operating system is switched back to the foreground from the background, the data writing operation and the data reading operation of the upper layer are switched on again.
Wherein the control module in the device may be specifically configured to:
sending system broadcast to the currently running audio playing application program in the operating system to be switched to the background, and informing the audio playing application program to pause playing;
the simulation power key enables the operating system to be switched to the background to enter a dormant state, so that the video playing application program currently running in the operating system to be switched to the background is paused;
and starting a second monitoring thread for monitoring a system switching event at the media playing server, and informing the kernel that the audio and video hardware resources are released when the second monitoring thread monitors that the operating system to be switched to the background is switched from the foreground to the background and all the audio and video playing application programs stop playing.
Preferably, the device may further include a switching application; the handover application is used to detect the following two abnormal situations: the background operating system is not started completely when an incoming call event occurs; when the two abnormal conditions are detected, the switching of the operating system is not allowed.
Two exemplary business processes are described below with two preferred embodiments, namely: the processing flow of the switching system when music or video is played, and the processing flow of the switching system when system prompt tone (such as screen locking, incoming call, alarm clock, etc.) is played.
The first embodiment is as follows: processing flow of switching system when playing music or video
When switching is carried out between the two operating systems, the Music player is informed to pause Music (Music) playing in a system broadcast sending mode, and the operating system to be switched to the background enters a dormant state by a Power (Power) simulating key, so that all Video (Video) playing currently running in the operating system to be switched to the background is paused, and thus, the Music player and the Video player stop occupying audio and Video hardware resources. Meanwhile, in this embodiment, a monitoring thread is started at a media playing service (mediaplayservice) to monitor a system switching event, and when the monitoring thread monitors that the operating system is switched from a foreground to a background and all audios and videos stop playing completely, the monitoring thread notifies a kernel that audio and video hardware resources have been released.
After the processing, the problem of how to actively release the audio and video hardware resources in the domain to be switched to the background is solved.
Example two: processing flow of switching system when playing prompt tone
When a foreground system is currently playing prompt tones (such as screen locking, incoming call, alarm clock, and the like), system switching cannot force the system to release hardware resources being used for playing the prompt tones from an application layer, so that in this embodiment, a monitoring thread is started in an audio module of an HAL layer to monitor a system switching event, when the system is switched from the foreground to a background, all audio resources are released, and a data writing operation (audio playing) and an audio recording operation (audio recording) of an upper layer are overhead; and when the system is switched from the background to the foreground, the read-write data operation of the upper layer is switched on again.
The technical effect achieved by adopting the processing mode in the embodiment is as follows: the sound playing/recording logic of the operating system switched to the background continues to be carried out, but no sound is output/input, so that the audio hardware resources such as a microphone, a loudspeaker and the like are not occupied, and the use of the current foreground operating system on the audio hardware resources is not influenced; when the background operating system is awakened again, if the sound logic is not finished, the sound playing/recording is continued, and the sound is output/input. Thus, both the first problem to be solved by the present application is solved: how to actively release audio and video hardware resources in a domain to be switched to a background; the second problem to be solved by the present application is also solved: how to re-enable the audiovisual hardware resources in the domain that is newly switched to the foreground.
In addition to the two major business processes, for the special case as described above, namely: the following describes the processing of the incoming call:
in order to ensure the integrity of the telephone, the dual system does not allow switching under the condition of incoming call, and the switching is allowed after the incoming call is stopped. Therefore, the switching APP is added to detect the following two abnormal conditions: (1) detecting an incoming call event; (2) and detecting that the background operating system is not started completely. And in the abnormal condition, switching is not allowed, and the operation returns directly.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.
Claims (10)
1. A method for switching operating systems of a dual-android terminal is characterized by comprising the following steps:
for the currently running audio and video playing application program in the operating system to be switched to the background in the dual-android terminal, pausing the audio and video playing application program in a system broadcasting mode;
and the audio and video playing application program suspends audio and video playing according to the system broadcast and releases the occupied audio and video hardware resources.
2. The method of claim 1, further comprising:
and releasing audio and video hardware resources which are not occupied by the audio and video playing application program through a hardware abstraction HAL layer.
3. The method of claim 2, wherein said releasing through the HAL layer comprises:
starting a first monitoring thread for monitoring a system switching event at an audio module of a HAL layer;
when the first monitoring thread monitors that the operating system is switched from a foreground to a background, releasing all audio hardware resources currently occupied by the operating system, and making an upper layer write data operation and a read data operation overhead;
and when the operating system is switched back to the foreground from the background, the data writing operation and the data reading operation of the upper layer are switched on again.
4. The method according to any one of claims 1 to 3, wherein the suspending the audio-video playing application program in a system broadcast manner specifically comprises:
sending system broadcast to the currently running audio playing application program in the operating system to be switched to the background, and informing the audio playing application program to pause playing;
and the analog power key enables the operating system to be switched to the background to enter a dormant state, so that the video playing application program currently running in the operating system to be switched to the background is paused.
5. The method of claim 4, wherein while the audio-video playing application is paused by way of the system broadcast, the method further comprises:
and starting a second monitoring thread for monitoring a system switching event at the media playing server, and informing the kernel that the audio and video hardware resources are released when the second monitoring thread monitors that the operating system to be switched to the background is switched from the foreground to the background and all the audio and video playing application programs stop playing.
6. A method according to any one of claims 1 to 3, characterized in that the method further comprises:
setting a switching application program, wherein the switching application program is used for detecting the following two abnormal conditions: the background operating system is not started completely when an incoming call event occurs;
when the two abnormal conditions are detected, the switching of the operating system is not allowed.
7. A dual android terminal device, comprising: a control module and an audio-video playing application program;
the control module is used for sending system broadcast to the currently running audio and video playing application program in the operating system to be switched to the background in the dual-android terminal and informing the audio and video playing application program of pausing playing;
and the audio and video playing application program is used for pausing audio and video playing according to the system broadcast of the control module and releasing the occupied audio and video hardware resources.
8. The apparatus as claimed in claim 7, further comprising a HAL layer audio module;
the HAL layer audio module is used for starting a first monitoring thread for monitoring a system switching event;
when the first monitoring thread monitors that the operating system is switched from a foreground to a background, releasing all audio hardware resources currently occupied by the operating system, and making an upper layer write data operation and a read data operation overhead;
and when the operating system is switched back to the foreground from the background, the data writing operation and the data reading operation of the upper layer are switched on again.
9. The device according to any one of claims 7 or 8, wherein the control module is specifically configured to:
sending system broadcast to the currently running audio playing application program in the operating system to be switched to the background, and informing the audio playing application program to pause playing;
the simulation power key enables the operating system to be switched to the background to enter a dormant state, so that the video playing application program currently running in the operating system to be switched to the background is paused;
and starting a second monitoring thread for monitoring a system switching event at the media playing server, and informing the kernel that the audio and video hardware resources are released when the second monitoring thread monitors that the operating system to be switched to the background is switched from the foreground to the background and all the audio and video playing application programs stop playing.
10. The apparatus according to any one of claims 7 or 8, wherein the apparatus further comprises a handover application;
the handover application is used to detect the following two abnormal situations: the background operating system is not started completely when an incoming call event occurs; when the two abnormal conditions are detected, the control module is informed to not switch the operating system.
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