CN113296858B - Method for detecting and recovering picture dead of vehicle-mounted system and storage medium - Google Patents
Method for detecting and recovering picture dead of vehicle-mounted system and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of communication, and provides a method for detecting and recovering the dead of a vehicle-mounted system picture and a storage medium, which abandon whether a key thread according to the programming dimension of a computer has a dead phenomenon or not so as to judge the inherent thinking of the dead phenomenon of a visual interface, directly establish a test template according to the tested interface, and define a test area so as to optimize the test speed and the test precision; according to the preset time interval, the regional parameters of the test region are adjusted and detected, the change of the test region is automatically controlled, the comparison of the regional parameters detected before and after the preset time interval can be carried out, whether the tested interface is dead or not can be determined according to the comparison result, the visual picture of a user is used as a judging standard, the visual experience and feeling of the user are more closed, and the effect is obvious; and when the abnormal picture is determined, performing picture restoration operation to quickly restore the display and touch functions of the vehicle.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method for detecting and recovering picture dead of a vehicle-mounted system and a storage medium.
Background
The android native design is hosted on a watchdog (watch dog) of a System Server System process, and for most logic blocking caused by thread blocking or long-time waiting, soft restart on the design is performed to be used as a last defense line to break the dead tie of the thread deadlock. But since the layer composition of the picture is not done directly by the system _ server system process, it is done by the surface flinger. The watchdog (watch) is mainly used for processing logic deadlock caused by deadlock of threads in a system_server or long waiting time, so that no monitoring and recovering mechanism exists for whether a picture which is output by a layer composition and can be most intuitively seen by a user is dead or not.
That is, for some non-threaded logic deadlocks, the watchdog mechanism does not work well, and neither is a deadlock situation detected, and therefore the problem of deadlock cannot be solved. Such as occurs on a Surface Flinger:
1. frame buffers of all applications that do not return after the hardware composer hardware abstraction layer service is invoked fail to be synthesized and displayed at the Surface Flinger end to be stiff;
2. as the synchronous hwvsync is lost, the synchronous signal from hardware disappears, and the picture is not timely synchronous and stiff;
3.Surface Flinger fails or does not return when allocation of area memory is invoked, resulting in a similar dead hold as described in 1.
That is, the existing native design watchdog cannot cover the non-logical screen dead caused by the above various scenes. Such a dead weight, once it occurs, causes a serious problem of "class unavailability" of the whole vehicle. And because the end user does not know how to restart the car, even the phenomenon of machine withdrawal and the like can be caused.
Disclosure of Invention
The invention provides a method for detecting and recovering the dead pictures of a vehicle-mounted system and a storage medium, which solve the technical problem that a watchdog of the existing android system cannot effectively detect the non-logic dead pictures of the system, so that a system interface is continuously dead.
In order to solve the technical problems, the invention provides a method for detecting and recovering the dead of a vehicle-mounted system picture, which comprises the following steps:
s1, a test template is established in advance according to a tested interface, and a test area is defined;
s2, adjusting the regional parameters of the test region according to a preset time interval;
s3, respectively acquiring the regional parameters before and after the preset time interval, comparing the regional parameters, judging whether the tested interface is dead or not, and if so, executing the picture restoration operation.
The basic scheme abandons whether the key thread according to the programming dimension of the computer has 'deadlock' or not so as to judge the inherent thinking of the 'deadlock' phenomenon of the visual interface, directly establishes a test template according to the tested interface, and delimits a test area so as to optimize the test speed and the test precision; according to the preset time interval, the regional parameters of the test region are adjusted and detected, the change of the test region is automatically controlled, the comparison of the regional parameters detected before and after the preset time interval can be carried out, whether the tested interface is dead or not can be determined according to the comparison result, the visual picture of a user is used as a judging standard, the visual experience and feeling of the user are more closed, and the effect is obvious; and when the abnormal picture is determined, performing picture restoration operation to quickly restore the display and touch functions of the vehicle.
In a further embodiment, the step S1 includes:
s11, newly adding a bottom layer according to the tested interface to serve as a test template;
s12, selecting a pixel area on the test template and setting initial area parameters of the pixel area to obtain a test area.
According to the scheme, the bottom layer image layer corresponding to the tested interface is selected to manufacture the test template, so that the influence of the coverage of the test template on the normal display of the tested interface is effectively avoided; the fixed pixel area is arranged on the test template to establish a test area, so that the difficulty of test data acquisition is further reduced, the workload of analysis and calculation is further reduced, and the test efficiency is improved.
In a further embodiment, the step S2 specifically includes: and on the basis of the initial region parameters, adjusting the region parameters of the test region according to a preset time interval and a preset rule.
In a further embodiment, the preset rule is specifically: and controlling the RGB value of the test area to increment or decrement by a preset value every time the preset time interval passes, and returning to the RGB value of 1 if the RGB value exceeds the RGB value range.
According to the method, the RGB value is used as the regional parameter of the detection, the parameter is unique, the acquisition mode is simple, the detection precision can be improved, the preset rule is set according to the increment or decrement of the RGB value, the test region is adjusted in cooperation with the preset time interval, the parameter change of the test region can be accurately controlled, whether the test template is changed or not is conveniently judged according to the detected parameter change, and whether the tested interface is normally displayed or not is further judged.
In a further embodiment, the step S3 includes:
s31a, after the current parameter adjustment of the regional parameters is completed, acquiring the regional parameters before and after adjustment, comparing the regional parameters, and if the comparison is consistent, setting a flag bit on the comparison result;
s32a, when the current adjustment times are greater than 1, acquiring the comparison result of the previous time, and judging that the tested interface is dead if the comparison results of the previous and the subsequent times are both flag bits;
s33a, performing a picture restoration operation.
According to the scheme, the regional parameters before and after adjustment are acquired and compared, if the regional parameters are consistent, the test region is determined not to change according to parameter adjustment, and the display error of the current tested interface can be judged, so that a flag bit is set as a mark, and the comparison results before and after the acquisition are set to judge whether the tested interface is normally displayed or not, small faults such as delay and katon can be screened out, and the fault tolerance of detection is improved.
In another embodiment, the step S3 includes:
s31b, acquiring the area parameters of the currently recorded test area, comparing the area parameters with the area parameters recorded in the previous time, and if the comparison is consistent, setting a flag bit on the comparison result;
s32b, when the comparison times of the time is greater than 1, acquiring the comparison result of the previous time, and if the comparison results of the previous and the next times are both flag bits, judging that the tested interface is dead;
s33b, performing a picture restoration operation.
According to the method and the device, the problem of abnormal display of the actual image is combined, the fact that the region parameters after adjustment are acquired or are influenced by the dead interface is considered, the region parameters which are recorded recently cannot be acquired normally is directly used as current recorded data and compared with the region parameters which are recorded previously, and whether the currently tested interface is dead or not can be judged when the region parameters are acquired difficultly, so that powerful support is provided for the recovery of the picture, the detection stability of the picture of the vehicle is improved, and the use experience of a user is guaranteed.
In a further embodiment, in the step S12, the setting initial area parameters thereof is: and setting the pixel area as a pure color, and setting the RGB value as a preset initial value.
According to the method, the pixel area with the pure color is set as the test area, the preset initial value is configured, and the acquisition difficulty of the area parameters can be improved by utilizing the uniformity of the pure color, so that the detection and recovery rate can be improved.
In a further embodiment, in said step S33: the picture restoration operation is a device restart.
The invention also provides a storage medium, on which a computer program is stored, the computer program is used for realizing the method for detecting and recovering the dead picture of the vehicle-machine system. The storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
Drawings
FIG. 1 is a flowchart of a method for detecting and recovering a dead frame of a vehicle-mounted system according to an embodiment of the present invention;
fig. 2 is a workflow diagram for determining whether an interface under test is dead according to a screenshot of a test area according to an embodiment of the present invention.
FIG. 3 is a flowchart of a method for determining whether an interface to be tested is dead by directly comparing stored pixel values according to an embodiment of the present invention.
Detailed Description
The following examples are given for the purpose of illustration only and are not to be construed as limiting the invention, including the drawings for reference and description only, and are not to be construed as limiting the scope of the invention as many variations thereof are possible without departing from the spirit and scope of the invention.
Example 1
The method for detecting and recovering the frame dead of the vehicle-mounted system provided by the embodiment of the invention, as shown in fig. 1, comprises the following steps:
s1, a test template is established in advance according to a tested interface, and a test area is defined, wherein the method comprises the following steps of S11-S12:
s11, newly adding a bottom layer according to the tested interface to serve as a test template;
s12, selecting a pixel area on the test template and setting initial area parameters of the pixel area to obtain a test area.
In this embodiment, the initial area parameters are set as follows: the pixel area is set to be solid color, and the RGB value is set to be a preset initial value.
The preferable layer of the bottom layer is the 'lowest layer' +2 (or +1, +3 can be selected according to the current tested interface), so that the display layer of the tested interface is prevented from being covered, and the test template can be detected.
This embodiment:
the bottom layer image layer corresponding to the tested interface is selected to manufacture the test template, so that the influence of the coverage of the test template on the normal display of the tested interface is effectively avoided; the fixed pixel area is arranged on the test template to establish a test area, so that the difficulty of test data acquisition is further reduced, the workload of analysis and calculation is further reduced, and the test efficiency is improved.
The pixel area with the pure color is set as a test area, a preset initial value is configured, and the acquisition difficulty of the area parameters can be improved by utilizing the uniformity of the pure color, so that the detection and recovery rate can be improved.
S2, adjusting regional parameters of a test region according to a preset time interval, wherein the regional parameters specifically comprise: based on the initial region parameters, the region parameters of the test region are adjusted according to preset time intervals and preset rules.
In this embodiment, the preset rule is specifically: and after the preset time interval, controlling the RGB value of the test area to increment or decrement by a preset value, and returning to the RGB value of 1 if the RGB value exceeds the RGB value range.
In this embodiment, the preset time interval is preferably 10 seconds, and in other embodiments, specific settings may be made as needed.
In the embodiment, the RGB value is used as the detected regional parameter, the parameter is unique and the acquisition mode is simple, the detection precision can be improved, the preset rule is set according to the increment or decrement of the RGB value, the test region is adjusted in cooperation with the preset time interval, the parameter change of the test region can be accurately controlled, whether the test template is changed or not is conveniently judged according to the detected parameter change, and whether the tested interface is normally displayed or not is further judged.
S3, respectively acquiring regional parameters before and after a preset time interval, comparing the regional parameters, judging whether the tested interface is dead, and if so, executing the picture restoration operation.
In this embodiment, referring to fig. 2, step S3 includes:
s31a, after the current parameter adjustment of the regional parameters is completed, regional parameters before and after adjustment are obtained and compared, and if the comparison is consistent, a marker bit is arranged on the comparison result;
s32a, when the current adjustment times are greater than 1, acquiring a previous comparison result, and if the previous and subsequent comparison results are both flag bits, judging that the tested interface is dead;
s33a, performing a picture restoration operation.
In this embodiment, the parameters of the area before and after adjustment are obtained and compared, if the parameters are consistent, it is determined that the test area does not change according to the parameter adjustment, and then the display error of the current tested interface can be determined, so that a flag bit is set as a flag, and the comparison results of two times before and after the obtaining are set to determine whether the tested interface is normally displayed, so that minor faults such as delay and katon can be screened, and the fault tolerance of the detection can be improved.
In another embodiment, referring to fig. 3, step S3 further includes:
s31b, acquiring the area parameters of the currently recorded test area, comparing the area parameters with the area parameters recorded in the previous time, and if the comparison is consistent, setting a flag bit on the comparison result;
s32b, when the comparison times of the time are greater than 1, acquiring a comparison result of the previous time, and if the comparison results of the previous and the next times are both flag bits, judging that the tested interface is dead;
s33b, performing a picture restoration operation.
According to the method and the device for detecting the image display abnormality, the problem that the actual image display abnormality is combined, the fact that the region parameters after adjustment are acquired or are affected by the dead interface is considered, the region parameters which are recorded recently cannot be acquired normally is directly used as current recorded data and is compared with the region parameters which are recorded previously, and whether the current detected interface is dead or not can be judged when the region parameters are difficult to acquire, so that powerful support is provided for the recovery of the image, the detection stability of the image of the vehicle is improved, and the use experience of a user is guaranteed.
In this embodiment, the screen recovery operation is a device restart, including but not limited to a device power-off restart or an operating system restart; the interface to be tested is a display screen with display function (which may also include a touch screen), including but not limited to a vehicle-mounted system interface.
Referring to fig. 2 and 3, a specific detection and recovery process in the embodiment of the present invention is as follows:
1. manufacturing test template and demarcating test area
According to the newly added bottom layer in the display layer of the tested interface, as a test template, a pixel area is selected from the side of the top right corner (or any area such as the bottom right corner or the top left corner) of the test template, and is coated with solid color as a test area. For the sake of calculation, the size of the pixel area in this embodiment is preferably 1*1 pixels, and the initial pixel value is 1.
2. Dead detection
1) Every 10 seconds (preset time interval), the RGB value of the test area is controlled to be increased or decreased by a preset value (namely, the area parameter of the test area is adjusted), and if the RGB value exceeds the RGB value range, the RGB value is returned to be 1.
At this time, images of the test area before and after the change are intercepted, and corresponding pixel values are extracted and recorded.
And comparing the difference values of the pixel values before and after adjustment, if the difference value is 0, comparing the difference values to be consistent, setting a flag bit on the comparison result, and if the difference value is a preset numerical value, considering that the tested interface is normally displayed.
2) When the images of the test area before and after the change cannot be intercepted, namely the screenshot operation does not respond, the recently recorded pixel value is used as the area parameter of the currently detected test area and is compared with the pixel value stored last time, if the difference value is 0, the comparison is consistent, the comparison result is set as a flag bit, and if the difference value is a preset value, the tested interface is considered to be normally displayed.
The above 1) and 2) are complementary processes, and can be synchronously performed, and when 1) is forced to be interrupted, 2) can be used as an alternative, and whether the detected picture is dead or not is continuously detected.
3. Dead judgment
When the comparison result of this time is the flag bit, the comparison result of the previous time is obtained, if the comparison result is also the flag bit, the detected interface in 20 continuous seconds is judged to be in a dead state continuously, and restarting recovery operation is carried out; otherwise, the dead detection is continued.
In this embodiment, taking a vehicle-mounted system picture as an interface to be tested as an example, a comparison experiment between the embodiment of the present invention and the conventional dead detection means is set:
the method comprises a conventional Android vehicle machine A and an Android vehicle machine B applying the method for detecting and recovering the dead images of the vehicle machine system provided by the embodiment, and the following comparative experiment is carried out:
the sleep permanent sleep operation is forcibly increased before the displayDevice- > makeCurrent of the displaeflinger modules of the vehicle A and the vehicle B to simulate that the displaeflinger cannot convey the Frame Buffer as expected due to some unexpected error.
The comparison result is that the vehicle machine A is always stuck and cannot be recovered unless the power is turned off and restarted;
and the vehicle machine B is automatically restarted after 20 seconds until entering the desktop, and the functions of picture display (layer composition) and touch are successfully recovered.
The embodiment of the invention abandons the inherent thinking of judging the dead phenomenon of the visual interface according to whether the key thread of the programming dimension of the computer has the dead phenomenon or not, directly establishes a test template according to the tested interface, and delimits a test area so as to optimize the test speed and the test precision; according to the preset time interval, the regional parameters of the test region are adjusted and detected, the change of the test region is automatically controlled, the comparison of the regional parameters detected before and after the preset time interval can be carried out, whether the tested interface is dead or not can be determined according to the comparison result, the visual picture of a user is used as a judging standard, the visual experience and feeling of the user are more closed, and the effect is obvious; and when the abnormal picture is determined, performing picture restoration operation to quickly restore the display and touch functions of the vehicle.
Example 2
The embodiment of the invention also provides a storage medium, on which a computer program is stored, the computer program being used for realizing the method for detecting and recovering the dead frame of the vehicle-mounted system in the embodiment 1. The storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (5)
1. A method for detecting and recovering the dead picture of a vehicle-mounted system is characterized by comprising the following steps:
s1, a test template is established in advance according to a tested interface, and a test area is defined;
s2, adjusting the regional parameters of the test region according to a preset time interval;
s3, respectively acquiring the regional parameters before and after the preset time interval, comparing the regional parameters, judging whether the tested interface is dead or not, and if so, executing the picture restoration operation;
the step S1 includes:
s11, newly adding a bottom layer according to the tested interface to serve as a test template;
s12, selecting a pixel area on the test template and setting initial area parameters of the pixel area to obtain a test area;
the step S2 specifically comprises the following steps: on the basis of the initial region parameters, the region parameters of the test region are adjusted according to preset time intervals and preset rules at regular time;
in the step S12, the setting of the initial area parameters is: setting the pixel area as a pure color, and setting the RGB value as a preset initial value;
the preset rule specifically comprises the following steps: and controlling the RGB value of the test area to increment or decrement by a preset value every time the preset time interval passes, and returning to the RGB value of 1 if the RGB value exceeds the RGB value range.
2. The method for detecting and recovering the dead frame of the vehicle system according to claim 1, wherein the step S3 comprises:
s31a, after the current parameter adjustment of the regional parameters is completed, acquiring the regional parameters before and after adjustment, comparing the regional parameters, and if the comparison is consistent, setting a flag bit on the comparison result;
s32a, when the current adjustment times are greater than 1, acquiring the comparison result of the previous time, and judging that the tested interface is dead if the comparison results of the previous and the subsequent times are both flag bits;
s33a, performing a picture restoration operation.
3. The method for detecting and recovering the dead frame of the vehicle system according to claim 1, wherein the step S3 comprises:
s31b, acquiring the area parameters of the currently recorded test area, comparing the area parameters with the area parameters recorded in the previous time, and if the comparison is consistent, setting a flag bit on the comparison result;
s32b, when the comparison times of the time is greater than 1, acquiring the comparison result of the previous time, and if the comparison results of the previous and the next times are both flag bits, judging that the tested interface is dead;
s33b, performing a picture restoration operation.
4. A method for detecting and recovering a dead frame of a vehicle system according to claim 2 or 3, wherein in the step S33: the picture restoration operation is a device restart.
5. A storage medium having a computer program stored thereon, characterized by: the computer program is used for realizing the method for detecting and recovering the dead picture of the vehicle-mounted system according to any one of claims 1-4.
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| US10319457B2 (en) * | 2016-03-21 | 2019-06-11 | International Business Machines Corporation | Methods and systems of testing interfaces of computer storage for storage vulnerabilities |
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| CN105653407A (en) * | 2015-12-08 | 2016-06-08 | 网易（杭州）网络有限公司 | Terminal, jam measuring method, device, game jam measuring method and apparatus |
| CN109343997A (en) * | 2018-10-31 | 2019-02-15 | Oppo广东移动通信有限公司 | Caton detection method, device, terminal and storage medium |
| CN111339842A (en) * | 2020-02-11 | 2020-06-26 | 深圳壹账通智能科技有限公司 | Video jamming identification method and device and terminal equipment |
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