CN113542848B - Vehicle-mounted image window custom adjustment method and vehicle-mounted system - Google Patents
Vehicle-mounted image window custom adjustment method and vehicle-mounted system Download PDFInfo
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- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000004891 communication Methods 0.000 claims description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
- H04N21/4858—End-user interface for client configuration for modifying screen layout parameters, e.g. fonts, size of the windows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The application relates to a vehicle-mounted image window self-defining adjustment method and a vehicle-mounted system, which are applied to the vehicle-mounted system provided with an acquisition camera and a display screen, wherein the method comprises the following steps: creating a first window, and defining a video signal output by the first window; and receiving and identifying a trigger event, and processing the first window according to the trigger event. The beneficial effects of this application are: the vehicle-mounted image output window can be subjected to self-defined adjustment, the problem that an automobile driver cannot use auxiliary videos to view road condition video combinations in different directions of an automobile body according to own needs under special road conditions is solved, the current existing panoramic auxiliary driving function is improved, and the vehicle-mounted image output window is more flexible and closer to user use requirements.
Description
Technical Field
The application relates to the technical field of automobile electronics, in particular to a vehicle-mounted image window self-defining adjustment method and a vehicle-mounted system.
Background
The modern society science and technology is continuously improved, the development of automobiles is also improved, and the functions of intelligent equipment for assisting driving in automobiles are more and more, so that the intelligent equipment is more and more close to humanized design and requirements. The panoramic effect of looking around is now a common driving assistance function. The current panoramic view function is to display videos of a car body in a certain direction in real time according to a set view, and provide an auxiliary road condition viewing function for a driver, but the combination of the videos of the car body cannot be displayed by a car user in a self-defined mode according to own habits and needs, for example, when the driver needs to reverse through a narrow roadway and has a road edge, the driver cannot observe clearly or needs to observe the conditions of the rear side and the side at the same time on a rearview mirror, and the auxiliary fixed view cannot meet the needs.
Disclosure of Invention
In order to solve the problem that in the prior art, an automobile user cannot display a combination of automobile body videos in a self-defined mode according to own habits and needs, the application provides a self-defined adjustment method of an automobile-mounted image window and an automobile-mounted system.
A self-defining adjusting method for a vehicle-mounted image window is applied to a vehicle-mounted system provided with an acquisition camera and a display screen, and comprises the following steps:
creating a first window, and defining a video signal output by the first window;
and receiving and identifying a trigger event, and processing the first window according to the trigger event.
Optionally, the creating the first window includes creating for a screen graphic service based on the vehicle-mounted system, including:
and creating a first window through a window component of the screen graphic service.
Optionally, the creating the first window through the window component of the screen graphic service includes:
starting the screen graphic service and creating a service context for establishing communication with the screen graphic service;
creating a first window through the service context, and setting a retrieval ID of the first window;
initializing window attributes of the first window;
creating a memory space buffer for the first window through a screen graphics service;
wherein, the window attribute at least comprises one or more of pixel format, window size and access right.
Optionally, the defining the video signal output by the first window includes:
initializing and setting a buffer zone attribute of the memory space buffer zone;
creating a shared memory and binding a shared address of a video signal to be output by the first window;
distributing the shared address to a memory space buffer area;
and associating the memory space buffer area with the first window, and informing the first window to start displaying.
The buffer attribute removing at least comprises one or more of memory allocation, storage size setting, pixel format and step length.
Optionally, the video signal is collected by a collecting camera, and the video signal at least includes one of panoramic video, front video, rear video, left video, and right video.
Optionally, before the creating the first window by the window component of the screen graphic service, the method further comprises:
creating a parent window through a window component of the screen graphic service, and creating a first window through the window component in the parent window.
Optionally, the receiving and identifying a trigger event includes:
receiving a trigger event of key input or touch input, and comparing the trigger event with an input event library of the vehicle-mounted system;
if the trigger event has a matching event in the input event, outputting a matching event; otherwise, the processing is not performed.
Optionally, if the trigger event is a zoom window event, performing a zoom process on the first window, including:
acquiring an input coordinate point of the trigger event, judging whether the input coordinate point is in a display screen area or not, and confirming whether a first window is controlled or not;
if so, further judging whether stretching or shrinking exists in the two connected input coordinate points;
if yes, calculating the offset of the two connected input coordinate points, updating the wide attribute and the high attribute of the first window by the screen graphic service according to the offset, and scaling the output window.
Optionally, if the first window is in the parent window, before performing the scaling processing on the first window, the method further includes:
judging whether each boundary of the first window is not attached to a parent window or is positioned on a second window boundary of the parent window after the first window is deflected according to the deflection quantity;
if so, adjusting the offset according to the distance between the first window and the boundary of the second window or the boundary of the father window, and updating the wide attribute and the high attribute of the first window through the screen graphic service.
In addition, the application also provides a vehicle-mounted system, wherein the vehicle-mounted system is operated with a QNX operating system, and the operating system of the screen graphic service is operated with a program comprising the vehicle-mounted image window self-defining adjusting method.
Compared with the prior art, the beneficial effects of this application are: the vehicle-mounted image output window can be subjected to self-defined adjustment, the problem that an automobile driver cannot use auxiliary videos to view road condition video combinations in different directions of an automobile body according to own needs under special road conditions is solved, the current existing panoramic auxiliary driving function is improved, and the vehicle-mounted image output window is more flexible and closer to user use requirements.
Drawings
Fig. 1 is a flowchart of an embodiment of the present application.
Fig. 2 is a schematic diagram of self-adaptive image self-defining adjustment in the present application.
Detailed Description
The present application is further described below in connection with the detailed description.
The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., based on the orientation or positional relationship shown in the drawings, this is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in the specific orientation, so that the words describing the positional relationship in the drawings are merely for illustration and are not to be construed as limiting the present patent.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are primarily for distinguishing between different devices, elements, or components (the particular categories and configurations may be the same or different) and are not intended to indicate or imply relative importance or quantity of the devices, elements, or components indicated, but are not to be construed as indicating or implying relative importance.
In the embodiment shown in fig. 1-2, the application provides a vehicle-mounted image window self-defining adjustment method, which is applied to a vehicle-mounted system provided with an acquisition camera and a display screen, and comprises the following steps:
100, creating a first window, and defining a video signal output by the first window; in step 100, creating a first window for a screen graphics service based on an in-vehicle system includes: the first window is created by a window component of the screen graphics service. Defining a video signal output by a first window, comprising: initializing and setting a buffer zone attribute of a memory space buffer zone; creating a shared memory and binding a shared address of a video signal to be output by the first window; distributing the shared address to the memory space buffer area; and associating the memory space buffer area with the first window, and informing the first window to start displaying. The buffer removing attribute at least comprises one or more of memory allocation, storage size setting, pixel format and step length.
And 200, receiving and identifying a trigger event, and processing the first window according to the trigger event. In step 200, a triggering event is received and identified, including: receiving a trigger event of key input or touch input, and comparing the trigger event with an input event library of the vehicle-mounted system; if the trigger event has a matching event in the input event, outputting the matching event; otherwise, the processing is not performed. If the trigger event is a zoom window event, performing zoom processing on the first window, including: acquiring an input coordinate point of a trigger event, and judging whether the input coordinate point is in a first window or not; judging whether stretching or shrinking exists at the input coordinate points connected in two sections; if yes, calculating the offset of the two connected input coordinate points, updating the wide attribute and the high attribute of the first window by the screen graphic service according to the offset, and scaling the output window.
In the embodiment, the method can be used in a vehicle-mounted system with an operating system being a QNX system, and the vehicle-mounted image output window can be subjected to self-defined adjustment, so that the problem that an automobile driver cannot use auxiliary videos to view road condition video combinations in different directions of a vehicle body according to own needs under special road conditions is solved, the current panoramic auxiliary driving function is improved, and the method is more flexible and more close to the use requirements of users.
In some embodiments, creating the first window for an on-board system based screen graphics service includes: the first window is created by a window component of the screen graphics service.
In one implementation of the above embodiment, creating the first window through the window component of the screen graphics service includes:
starting a screen graphic service and creating a service context for establishing communication with the screen graphic service; in this embodiment, the present application may enable the screen graphics service by the vehicle. Before creating a service context for establishing communication with the screen graphic service, the application can judge whether the service context exists in the screen graphic service; if the first window can be directly created through the screen graphic service context; if not, establishing a service context, and establishing communication between the service context and the screen graphic service.
Creating a first window through the service context, and setting a retrieval ID of the first window; in this embodiment, the present application creates a first window according to a window component through a service context, and sets a search ID of the first window.
Initializing window attributes of a first window; in this embodiment, after the first window is created, the first window is initialized with the window attribute, that is, the pixel format, the window size, and the access right lamp parameters of the window are set to be initialized.
Creating a memory space buffer for the first window through the screen graphics service; in this embodiment, after initializing the first window, a memory buffer for the first window is created by the screen graphics service to store the shared address of the video signal.
In one embodiment of the foregoing implementation, before creating the first window through the window component of the screen graphics service, the method further includes: a parent window is created through a window component of the screen graphics service, and a first window is created within the parent window through the window component. In this embodiment, the present application may define the size range of the display screen by creating a parent window. The parent window can be created through a window component of the screen graphic service, and after the parent window is created, the child window is created under the parent window.
In some embodiments, defining the video signal output by the first window includes: initializing and setting a buffer zone attribute of a memory space buffer zone; creating a shared memory and binding a shared address of a video signal to be output by the first window; distributing the shared address to the memory space buffer area; and associating the memory space buffer area with the first window, and informing the first window to start displaying. The buffer removing attribute at least comprises one or more of memory allocation, storage size setting, pixel format and step length. The video signal is collected through the collecting camera, and the video signal at least comprises one of panoramic video, front video, rear video, left video and right video. In this embodiment, the display content of the first window may be selected to splice panoramic video or video acquired by the front/rear/left/right cameras of the vehicle body, the memory address for acquiring these video image data needs to be defined, and after the window is dynamically created, the memory address of the selected video image may be input into the memory space buffer of the window component, so that the output display in the window is the image content stored in the memory space buffer.
In some embodiments, receiving and identifying a trigger event includes: receiving a trigger event of key input or touch input, and comparing the trigger event with an input event library of the vehicle-mounted system; if the trigger event has a matching event in the input event, outputting the matching event; otherwise, the processing is not performed. The triggering event is acquired by receiving physical keys or touch input. In this embodiment, the touch input is used for the acquisition. After touch input is acquired; comparing the trigger event with the input event; if the coordinates of the touch points change, finding out a comparison file in the input event library, and outputting a matching event to the program of the application. Otherwise, the processing is not performed.
In some embodiments, if the trigger event is a zoom window event, performing a zoom process on the first window includes: acquiring an input coordinate point of a trigger event, and judging whether the input coordinate point is in a first window or not; judging whether stretching or shrinking exists at the input coordinate points connected in two sections; if yes, calculating the offset of the two connected input coordinate points, updating the wide attribute and the high attribute of the first window by the screen graphic service according to the offset, and scaling the output window. In this embodiment, after the triggering event is identified through the input event library, the application obtains the input coordinate point of the triggering event, determines whether the input coordinate point is in the screen area,
if yes, judging whether the first window is controlled or not, otherwise, not processing.
If the first window is controlled, judging whether the input coordinate points of the multi-section connection are stretching or shrinking gestures or not, otherwise, not processing;
if the input coordinate points are stretching or shrinking gestures, calculating offset of x and y coordinates of the input coordinate points at two ends, and updating the width and height attributes of the first window through screen graphic service; the first window is enlarged or reduced. Otherwise, the processing is not performed.
In some embodiments, referring to fig. 2, if the first window is within the parent window, before scaling the first window, the method further includes: judging whether each boundary of the first window is not attached to a parent window or is positioned on a second window boundary of the parent window after the first window is deflected according to the deflection quantity; if so, adjusting the offset according to the distance between the first window and the boundary of the second window or the boundary of the father window, and updating the wide attribute and the high attribute of the first window through the screen graphic service.
In one implementation manner of the foregoing embodiment, it is determined whether a second window located in the parent window exists or is located outside a boundary of the parent window after the first window is shifted according to the offset; if so, adjusting the offset according to the distance between the first window and the boundary of the second window or the parent window, and updating the wide attribute and the high attribute of the first window through the screen graphic service. In this embodiment, if the first window is within the parent window, it is required to determine whether the zoom-in or zoom-out of the first window is within the parent window and covers the adjacent second window. Therefore, whether a second window positioned in the father window exists or whether the second window is positioned outside the boundary of the father window is judged after the first window is deviated according to the deviation amount; if the offset is adjusted according to the distance between the first window and the boundary of the second window or the parent window. And the first window is adjusted according to the final offset, so that the boundary of the first window is attached to the parent window or the adjacent second window.
In one implementation manner of the foregoing embodiment, it is determined whether the boundary of the first window is further away from the boundary of the parent window or the boundary of the second window after the first window is shifted according to the offset, if so, the offset is adjusted according to the distance between the first window and the boundary of the second window or the boundary of the parent window, and the wide attribute and the high attribute of the first window are updated through the screen graphics service. And the first window is adjusted according to the final offset, so that the boundary of the first window is attached to the parent window or the adjacent second window.
In some embodiments, the application further provides a vehicle-mounted system, the vehicle-mounted system is operated with a QNX operating system, and the operating system of the screen graphic service is operated with a program comprising the vehicle-mounted image window self-defining adjustment method. In this embodiment, the application realizes the functions of user-defined creation of one or more display windows of the screen, selection of a video in a certain vehicle body direction displayed in the window, and zooming of each display window by recognizing a gesture of the user touching the screen. Specifically, the application creates at least one display window through a screen graphic service screen provided by a QNX operating system; and display and size control is performed on the display window. The user can customize the display pane and display the body video required by the user. The screen graphic service screen in the QNX operating system integrates various graphic related basic component services such as a window component window for output display, a memory space Buffer for output display and the like, and the functions of customizing window display and layout on a vehicle-mounted screen are realized based on the basic services. And the input event library service mtouch in the qnx operating system is used for identifying gesture coordinates, triggering an event and judging the offset of a coordinate point, and dynamically setting the window size by using the offset so as to realize a dynamic scaling function.
Creating a video display window includes: based on window components in screen service and comprising Buffer for storing display content, creating a parent window to limit the size range of a screen, then creating a child window, namely a first window, by self-defining trigger in the parent window, wherein the display content of the child window can be selected to splice panoramic video or front/back/left/right video of a vehicle body, the memory address for acquiring the video image data needs to be defined, and the memory address of the selected video image can be input into the Buffer of the window components after the window is dynamically created, so that the output display in the window is the image content stored in the Buffer.
The scalable adaptive window includes: the occupied area of each window on the screen is memorized, the video sub-window to be controlled is confirmed by identifying the first screen coordinate touched by the finger of the user, the mtouch is used for identifying the gesture of the user and the movement change of the coordinates thereof, and the size of the invasive window is set according to the offset of the coordinate points so as to realize scaling of the video window according to the gesture. And judging the video window subjected to scaling operation by the user, if other display windows exist in a limited distance, intelligently scaling the video window, and automatically scaling the width and the height of the window to a position which can be perfectly spliced with the adjacent windows.
It is apparent that the above examples of the present application are merely examples for clearly illustrating the present application and are not limiting of the embodiments of the present application. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modifications, equivalent substitutions, improvements, etc. that fall within the spirit and principles of the present application are intended to be included within the scope of the claims of this application.
Claims (7)
1. The method is characterized by being applied to a vehicle-mounted system provided with an acquisition camera and a display screen, and comprises the following steps:
creating a first window, and defining a video signal output by the first window;
receiving and identifying a trigger event, and processing the first window according to the trigger event;
the creating the first window is created for the screen graphic service based on the vehicle-mounted system, and comprises the following steps:
starting the screen graphic service and creating a service context for establishing communication with the screen graphic service;
creating a first window through the service context, and setting a retrieval ID of the first window;
initializing window attributes of the first window;
creating a memory space buffer for the first window through a screen graphics service;
the receiving and identifying a trigger event includes:
receiving a trigger event of key input or touch input, and comparing the trigger event with an input event library of the vehicle-mounted system;
if the trigger event has a matching event in the input event, outputting a matching event; otherwise, not processing;
if the trigger event is a zoom window event, performing zoom processing on the first window, including:
acquiring an input coordinate point of the trigger event, judging whether the input coordinate point is in a display screen area or not, and confirming whether a first window is controlled or not;
if so, further judging whether stretching or shrinking exists in the two connected input coordinate points;
if yes, calculating the offset of the input coordinate points of the two sections of connection, and updating the wide attribute and the high attribute of the first window by the screen graphic service according to the offset, wherein the first window is scaled.
2. The method for adjusting window definition of vehicle-mounted image according to claim 1, wherein the window attribute at least comprises one or more of a pixel format, a window size and an access right.
3. The method for adjusting the window of the vehicle-mounted image according to claim 2, wherein the defining the video signal output by the first window comprises:
initializing and setting a buffer zone attribute of the memory space buffer zone;
creating a shared memory and binding a shared address of a video signal to be output by the first window;
distributing the shared address to a memory space buffer area;
associating the memory space buffer area with the first window, and informing the first window to start displaying;
the buffer area attribute at least comprises one or more of memory allocation, storage size setting, pixel format and step length.
4. The method for self-defining adjustment of a vehicle-mounted image window according to claim 3, wherein the video signal is collected by a collecting camera, and the video signal at least comprises one of panoramic video, front video, rear video, left video and right video.
5. The method for custom adjustment of an on-vehicle video window according to claim 1, further comprising, before the creating of the first window by the window component of the screen graphics service:
creating a parent window through a window component of the screen graphic service, and creating a first window through the window component in the parent window.
6. The method for custom adjustment of a vehicle-mounted image window according to claim 1, wherein if the first window is within a parent window, before scaling the first window, the method further comprises:
judging whether each boundary of the first window is not attached to a parent window or is positioned on a second window boundary of the parent window after the first window is deflected according to the deflection quantity;
if so, adjusting the offset according to the distance between the first window and the boundary of the second window or the boundary of the father window, and updating the wide attribute and the high attribute of the first window through the screen graphic service.
7. A vehicle-mounted system, wherein the vehicle-mounted system is operated with a QNX operating system, and the QNX operating system is operated with a program comprising a vehicle-mounted image window custom adjusting method according to any one of claims 1 to 6.
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| CN103986961A (en) * | 2014-05-26 | 2014-08-13 | 惠州华阳通用电子有限公司 | Method and device for achieving picture in picture based on QNX vehicle-mounted system |
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| CN103986961A (en) * | 2014-05-26 | 2014-08-13 | 惠州华阳通用电子有限公司 | Method and device for achieving picture in picture based on QNX vehicle-mounted system |
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