CN112363836A - Android system camera resource control method - Google Patents
Android system camera resource control method Download PDFInfo
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- CN112363836A CN112363836A CN202011263763.7A CN202011263763A CN112363836A CN 112363836 A CN112363836 A CN 112363836A CN 202011263763 A CN202011263763 A CN 202011263763A CN 112363836 A CN112363836 A CN 112363836A
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- camera
- application
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- foreground application
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- G—PHYSICS
- 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
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
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- G—PHYSICS
- 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
- G06F9/46—Multiprogramming arrangements
- G06F9/50—Allocation of resources, e.g. of the central processing unit [CPU]
- G06F9/5005—Allocation of resources, e.g. of the central processing unit [CPU] to service a request
- G06F9/5011—Allocation of resources, e.g. of the central processing unit [CPU] to service a request the resources being hardware resources other than CPUs, Servers and Terminals
- G06F9/5022—Mechanisms to release resources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
Abstract
The invention discloses a method for managing and controlling Android system camera resources, which is characterized in that the process state of camera application is acquired through application process information in system service, and on the basis that the priority of the camera application of foreground application is smaller than that of background service, the judgment of the process state of the camera application is increased to distinguish whether the camera application is a foreground process or not, so that the camera resources are managed, and the foreground application can rob the camera resources of the background service.
Description
Technical Field
The invention relates to the field of Android smart televisions, in particular to a method for controlling camera resources of an Android system.
Background
At present, management and control of camera resources in an Android system are mainly performed in a system service (CameraService), and the flow of the management and control is as follows:
under the condition that an application A uses a camera, an application B applies for using the camera, firstly, open action is executed to acquire a camera object, so that the camera object enters a system service (CameraServer) to be connected (Connect), the system service (CameraServer) starts a control mechanism of camera resources while the camera object is connected, the size of a progress score (curAdj) of the application A using the camera and the size of a progress score (curAdj) of the application B applying for using the camera are compared to determine which application uses the camera resources, and the lower the progress score (curAdj), the higher the priority of the camera used by the application is.
Since the object to which the foreground application is directed is a user, it is necessary to ensure that the foreground application can acquire the camera resource under any circumstances. The original camera resource management and control mechanism mainly takes the process score as the judgment basis of the camera use priority, and does not distinguish whether the process state is the foreground or the background. When the process score of foreground application is higher than background service process, the priority of camera use of foreground application is lower than background service, and at the moment, the foreground application cannot use the camera, so that user behavior is blocked, and user product experience is influenced.
Therefore, the existing camera management and control mechanism has the condition that foreground application cannot acquire background service camera resources.
Disclosure of Invention
The invention aims to provide a method for controlling camera resources of an Android system, which can ensure that foreground applications opened by a user can acquire the camera resources of background services in a camera resource control mechanism in system services. Namely, when the camera use priority of the foreground application is lower than that of the background service, the foreground application can be ensured to preempt the camera resource of the background service.
In order to achieve the technical effects, the invention provides the following technical scheme:
a method for controlling Android system camera resources comprises the following steps: .
(1) The foreground application A is started and connected with the camera;
(2) executing a camera resource management and control function wooldEvictLocked ();
(3) determining whether the camera is being used by other application B; if not, the foreground application successfully acquires the camera resources, and the control flow is finished; if yes, continuing to perform the next step;
(4) respectively acquiring process scores of foreground application and other application B, if the process score of the foreground application A is smaller than that of the other application B, automatically disconnecting the other application B from the camera by the system, releasing the camera, acquiring camera resources by the foreground application A, and ending the control flow; if the process score of the foreground application A is larger than the process scores of the other applications B, carrying out the next step;
(5) acquiring the process state of a foreground application A, judging whether the foreground application A is a foreground process, if so, automatically disconnecting the connection between an application B using a camera and the camera by a system, releasing the camera, acquiring camera resources by the foreground application A, and ending a control flow; if not, the camera resources of the other applications B cannot be preempted, and the control flow is ended.
A further technical solution is that, before the foreground application a is started, the background service is using the camera.
Compared with the prior art, the invention has the following beneficial effects: the object oriented by the foreground application is a user, so that the foreground application is required to be ensured to occupy the camera resource certainly, and the problem that the foreground application in the Android system cannot occupy the camera resource of the background service is mainly solved based on the method. The method comprises the steps of acquiring a process state (procState) of a camera application through application process information in a system service (Cameraservice), and increasing judgment of the process state of the camera application on the basis that the camera use priority of a foreground application is smaller than that of a background service to distinguish whether the camera application is a foreground process or not, so that camera resources are controlled, and the foreground application can certainly occupy the camera resources of the background service.
Drawings
Fig. 1 is a flowchart illustrating a camera resource management and control method according to the present invention.
Detailed Description
The invention will be further explained and explained with reference to the drawings and the embodiments.
Example 1
As shown in fig. 1, the present invention provides a method for controlling resources of an Android system camera, including the following steps: .
(1) The foreground application A is started and connected with the camera;
(2) executing a camera resource management and control function wooldEvictLocked ();
(3) determining whether the camera is being used by other application B; if not, the foreground application successfully acquires the camera resources, and the control flow is finished; if yes, continuing to perform the next step;
(4) respectively acquiring process scores of foreground application and other application B, if the process score of the foreground application A is smaller than that of the other application B, automatically disconnecting the other application B from the camera by the system, releasing the camera, acquiring camera resources by the foreground application A, and ending the control flow; if the process score of the foreground application A is larger than the process scores of the other applications B, carrying out the next step;
(5) acquiring the process state of a foreground application A, judging whether the foreground application A is a foreground process, if so, automatically disconnecting the connection between an application B using a camera and the camera by a system, releasing the camera, acquiring camera resources by the foreground application A, and ending a control flow; if not, the camera resources of the other applications B cannot be preempted, and the control flow is ended.
Before the foreground application A is started, the background service uses the camera.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (2)
1. A method for controlling Android system camera resources is characterized by comprising the following steps: .
(1) The foreground application A is started and connected with the camera;
(2) executing a camera resource management and control function wooldEvictLocked ();
(3) determining whether the camera is being used by other application B; if not, the foreground application successfully acquires the camera resources, and the control flow is finished; if yes, continuing to perform the next step;
(4) respectively acquiring process scores of foreground application and other application B, if the process score of the foreground application A is smaller than that of the other application B, automatically disconnecting the other application B from the camera by the system, releasing the camera, acquiring camera resources by the foreground application A, and ending the control flow; if the process score of the foreground application A is larger than the process scores of the other applications B, carrying out the next step;
(5) acquiring the process state of a foreground application A, judging whether the foreground application A is a foreground process, if so, automatically disconnecting the connection between an application B using a camera and the camera by a system, releasing the camera, acquiring camera resources by the foreground application A, and ending a control flow; if not, the camera resources of the other applications B cannot be preempted, and the control flow is ended.
2. The Android system camera resource management and control method of claim 1, wherein a background service is using a camera before the foreground application A is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263763.7A CN112363836A (en) | 2020-11-12 | 2020-11-12 | Android system camera resource control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011263763.7A CN112363836A (en) | 2020-11-12 | 2020-11-12 | Android system camera resource control method |
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| CN112363836A true CN112363836A (en) | 2021-02-12 |
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| CN202011263763.7A Pending CN112363836A (en) | 2020-11-12 | 2020-11-12 | Android system camera resource control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113778641A (en) * | 2021-08-09 | 2021-12-10 | 荣耀终端有限公司 | Method for controlling camera, electronic device and computer readable storage medium |
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| CN113778641A (en) * | 2021-08-09 | 2021-12-10 | 荣耀终端有限公司 | Method for controlling camera, electronic device and computer readable storage medium |
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Application publication date: 20210212 |