CN111901660A - Image display method, terminal, electronic equipment and storage medium - Google Patents
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- H—ELECTRICITY
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- 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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Abstract
The application provides an image display method, a terminal, an electronic device and a storage medium. The method is applied to the terminal and comprises the following steps: acquiring image data to be displayed through a first process; and sending the image data to be displayed to the image display layer through a second process according to a preset acceleration strategy so as to enable the image display equipment to display the image according to the image data of the image display layer, wherein the second process is different from the first process, and the preset acceleration strategy is used for accelerating the processing speed of the image data to be displayed. The method accelerates the image display speed of the image display equipment and avoids the phenomenon of image display delay and even jamming of the image display equipment. On the other hand, even if the user has a high-resolution image data display requirement, the terminal can rapidly store the high-resolution image data with large data volume into the image display layer, so that the image display speed of the image display device and the smoothness of image switching are ensured, and the viewing experience of the user can be effectively enhanced.
Description
Technical Field
The present application relates to the field of image processing technologies, and in particular, to an image display method, a terminal, an electronic device, and a storage medium.
Background
With the rapid development of the video networking technology, the video networking terminal provides more and more abundant functions for users, such as a video networking television function, and the video networking terminal is connected with an image display device to control the image display device to display image information of a corresponding program so as to meet the program watching requirements of the users. The video network terminal has the image display layer function, can provide a display interface and is used for displaying a browser webpage, the image display layer is a concept of a software layer, and the corresponding hardware is image display equipment, namely: and after the video network terminal refreshes the image data to the image display layer, the image display equipment displays a corresponding picture.
In the related art, when controlling an image display device to display image information, a video network terminal directly fills image data to be displayed, which is obtained from a network, into a memory of an image display layer through a browser. However, for some ultra high definition terminals, there is a demand for displaying ultra high definition images, such as playing 4K (4K resolution) video in response to a request of a user, or the like. For a 4K video, the resolution of each frame of image displayed by an image display layer is required to reach 4K, if the resolution of one frame of image is larger, the data volume is larger, and if a browser directly fills 4K image data into a memory of the 4K image display layer, because the directly filled image data volume is too large, the performance of the browser is limited, the refreshing is slow, the phenomenon of delaying the image displayed by image display equipment is caused, and the watching experience of a user is further influenced.
Disclosure of Invention
In view of the above problems, embodiments of the present invention are proposed in order to provide an image display method, a terminal, an electronic device, and a storage medium that overcome or at least partially solve the above problems.
A first aspect of an embodiment of the present application provides an image display method, which is applied to a terminal, where the terminal is connected to an image display device, and the method includes:
acquiring image data to be displayed through a first process;
and sending the image data to be displayed to an image display layer through a second process according to a preset acceleration strategy so as to enable the image display equipment to display an image according to the image data of the image display layer, wherein the second process is different from the first process, and the preset acceleration strategy is used for accelerating the processing speed of the image data to be displayed.
Optionally, acquiring image data to be displayed through a first process, including:
acquiring image data to be displayed through a first process, and storing the image data to be displayed in a shared memory area;
sending the image data to be displayed to an image display layer according to a preset acceleration strategy through a second process, wherein the second process comprises the following steps:
and reading the image data to be displayed from the shared memory area through a second process, and sending the image data to be displayed to an image display layer according to a preset acceleration strategy.
Optionally, sending the image data to be displayed to an image display layer according to a preset acceleration policy, including:
when the resolution of the image data to be displayed is not equal to the resolution of the image display layer, adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration strategy;
and sending the adjusted image data to be displayed to an image display layer according to a preset acceleration strategy.
Optionally, adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration policy, including:
adjusting the resolution of the image data to be displayed to the resolution of the image display layer by adopting a graphic acceleration algorithm;
sending the image data to be displayed to an image display layer according to a preset acceleration strategy, comprising:
and sending the image data to be displayed to an image display layer by adopting a graphic acceleration algorithm.
Optionally, the shared memory area allows a process to have access right at the same time; storing the image data to be displayed in a shared memory area, including:
when the first process has the authority of accessing the shared memory area, storing the image data to be displayed in the shared memory area;
reading the image data to be displayed from the shared memory area through a second process, including:
and when the second process has the authority of accessing the shared memory area, reading the image data to be displayed from the shared memory area through the second process.
Optionally, the method further comprises:
creating a first semaphore and a second semaphore based on the semaphore mechanism;
and controlling the first process and the second process to perform PV operation on the first semaphore and the second semaphore respectively so as to control the permission of the first process and the second process for accessing the shared memory region.
Optionally, the terminal is equipped with a browser, the first process is a process for running the browser, the image display layer is configured to store image data of the browser, and the image display device is configured to display a browser page according to the image data of the browser; before acquiring image data to be displayed through the first process, the method further includes:
receiving an acquisition request of a target resource sent by a remote control device, wherein the acquisition request of the target resource is generated by the remote control device in response to the operation of a user on the browser page;
acquiring image data to be displayed through a first process, comprising:
determining image data to be displayed according to the target resource;
and acquiring the image data to be displayed by running the process of the browser.
A second aspect of the embodiments of the present application provides a terminal connected to an image display device, where the terminal includes:
the acquisition module is used for acquiring image data to be displayed through a first process;
and the sending module is used for sending the image data to be displayed to an image display layer through a second process according to a preset acceleration strategy so as to enable the image display equipment to display an image according to the image data of the image display layer, wherein the second process is different from the first process, and the preset acceleration strategy is used for accelerating the processing speed of the image data to be displayed.
Optionally, the obtaining module includes:
the first acquisition submodule is used for acquiring image data to be displayed through a first process and storing the image data to be displayed in a shared memory area;
the sending module comprises:
and the first sending submodule is used for reading the image data to be displayed from the shared memory area through a second process and sending the image data to be displayed to an image display layer according to a preset acceleration strategy.
Optionally, the sending module includes:
the adjusting module is used for adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration strategy when the resolution of the image data to be displayed is not equal to the resolution of the image display layer;
and the second sending submodule is used for sending the adjusted image data to be displayed to the image display layer according to a preset acceleration strategy.
Optionally, the adjusting module includes:
the adjustment submodule is used for adjusting the resolution of the image data to be displayed to the resolution of the image display layer by adopting a graphic acceleration algorithm;
the second transmission submodule includes:
and the third sending submodule is used for sending the image data to be displayed to an image display layer by adopting a graphic acceleration algorithm.
Optionally, the shared memory area allows a process to have access right at the same time; the acquisition sub-module includes:
the storage module is used for storing the image data to be displayed to the shared memory area when the first process has the authority of accessing the shared memory area;
the first sending submodule includes:
and the reading module is used for reading the image data to be displayed from the shared memory area through the second process when the second process has the authority of accessing the shared memory area.
Optionally, the terminal further includes:
a creation module for creating a first semaphore and a second semaphore based on a semaphore mechanism;
and the control module is used for controlling the first process and the second process to perform PV operation on the first semaphore and the second semaphore respectively so as to control the permission of the first process and the second process for accessing the shared memory region.
Optionally, the terminal is equipped with a browser, the first process is a process for running the browser, the image display layer is configured to store image data of the browser, and the image display device is configured to display a browser page according to the image data of the browser; the method further comprises the following steps:
the system comprises a receiving module, a processing module and a display module, wherein the receiving module is used for receiving an acquisition request of a target resource sent by a remote control device, and the acquisition request of the target resource is generated by the remote control device in response to the operation of a user on a browser page;
the acquisition module includes:
the determining submodule is used for determining image data to be displayed according to the target resource;
and the second acquisition submodule is used for acquiring the image data to be displayed by running the process of the browser.
A third aspect of the embodiments of the present application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps in the image display method according to the first aspect of the present application when executing the computer program.
A fourth aspect of the embodiments of the present application provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps in the image display method according to the first aspect of the present application.
According to the image display method, the terminal firstly acquires the image data to be displayed through the first process, and then rapidly stores the image data to be displayed into the memory of the image display layer through the second process different from the first process, so that the image display device displays the image according to the image data of the image display layer. The method solves the problem that the browser cannot rapidly store the image data in the image display layer in the related art, improves the image data processing efficiency of the terminal, accelerates the image display speed of the image display device, and avoids the phenomena of image display delay and even blocking of the image display device. On the other hand, even if the user has a high-resolution image data display requirement, the terminal can rapidly store the high-resolution image data with large data volume into the image display layer, so that the image display speed of the image display device and the smoothness of image switching are ensured, and the viewing experience of the user can be effectively enhanced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.
FIG. 1A is a schematic diagram of an implementation environment shown in an embodiment of the present application;
fig. 1B is a schematic view of a display interface of an image display device according to an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a related art image display method according to an embodiment of the present application;
FIG. 3 is a flow chart illustrating an image display method according to an embodiment of the present application;
FIG. 4 is a schematic diagram illustrating an image display method according to an embodiment of the present application;
FIG. 5A is a schematic diagram illustrating a scaling of a graph according to the present embodiment;
FIG. 5B is a schematic diagram illustrating an embodiment of an accelerated display of image data;
FIG. 6A is a schematic diagram illustrating the operation of a PV in accordance with one embodiment of the present application;
FIG. 6B is a schematic diagram illustrating another PV operation according to one embodiment of the present application;
FIG. 7A is a schematic view of a browser page according to an embodiment of the present application;
FIG. 7B is a schematic view of another browser page shown in an embodiment of the present application;
fig. 8 is a block diagram illustrating a terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1A is a schematic diagram of an implementation environment according to an embodiment of the present application. Fig. 1B is a schematic diagram of a display interface of an image display device according to an embodiment of the present application. In fig. 1A, the terminal is connected to the image display device, and when receiving a control command sent by the remote control device, the terminal acquires corresponding image data in response to the control command and controls the image display device to display the image data, and the display result can be as shown in fig. 1B.
The terminal in fig. 1A may be an embedded terminal. The video layer is the concept of the software hierarchy of the embedded video processing platform. The video network terminal watches network video data in the video network service and outputs the network video data to the image display equipment connected with the terminal, and the playing of the video data can be realized only based on a video layer. The video layer may provide output formats of different resolutions, such as 4k (3840 × 2160), HD1080P (1920 × 1080), 720P (1280 × 720), and the like. The image display layer is the concept of the software hierarchy of the embedded video processing platform. The embedded terminal can realize graph drawing, subtitle refreshing and the like based on the image display layer, the image display layer corresponds to the fixed memory area, image data is written into the memory area, and image refreshing to the image display layer can be realized. In the present application, the function of the image display layer is mainly used for browser display. The browser based on the image display layer display is mainly used for realizing interaction with a user, the operation result of the user on the terminal is displayed by the browser, the user generally realizes certain operations on the terminal through remote control equipment, and the browser process acquires the latest image display data according to the operations of the user and refreshes the latest image display data to the image display layer. Likewise, the image display layer may also set output formats of different resolutions.
In the present application, due to the limitation of the embedded terminal, the video layer of the terminal must maintain the same resolution as the image display layer, like 1080P, etc. For some high definition platforms, such as 4K terminals, if the terminal needs to output 4K high definition images, the resolution of the corresponding image display layer must also be set to 4K size.
Before describing the image display method of the present application in detail, first, a brief description will be given of an image display method in the related art.
Fig. 2 is a schematic diagram illustrating an image display method in the related art according to an embodiment of the present application. Referring to fig. 2, the terminal may be the terminal shown in fig. 1A, a browser is installed in the terminal, and image data is obtained from a network through a browser process and stored in a memory of an image display layer, so that image display of the image data by an image display device is realized, for example, a displayed image may be as shown in fig. 1B.
However, for some ultra high definition terminals, there is a demand for displaying ultra high definition images, such as playing 4K video in response to a request of a user, and the like. Taking playing 4K video as an example, the 4K video requires that the resolution of each frame of image displayed by the image display layer also reaches 4K. The resolution of an image is proportional to the amount of data, and the larger the resolution of an image of one frame is, the larger the amount of data is. For example, the data amount of an image of one frame resolution of 720P is 3.5M, and the data amount of an image of one frame resolution of 4K is 31.6M. If the browser process directly fills the image data with the resolution of 4K into the memory of the image display layer with the resolution of 4K, due to the fact that the amount of the directly filled image data is too large, the browser performance is limited, and the filling speed is slow, a delay phenomenon exists when the image display device displays images, for example, the image display device can be seen to refresh images line by line from top to bottom, and the watching experience of a user is greatly influenced.
In view of the problems in the related art as described above, the present application provides an image display method, which is applied to the terminal in fig. 1A. Fig. 3 is a flowchart illustrating an image display method according to an embodiment of the present application. Referring to fig. 3, the image display method of the present application may include the steps of:
step S31: image data to be displayed is acquired through a first process.
In this embodiment, the first process is the browser process in fig. 2. When the terminal needs to acquire the image data to be displayed, the image data to be displayed can be acquired through a browser process established for a browser installed by the terminal. The process is a program with independent functions in the computer and is a segment of computer instructions which run independently.
For example, when a user watches a television program displayed by an image display device, if the user wants to play a target video, the user can send a command for requesting the target video to a terminal through a remote control device, and after receiving the command, the terminal searches for the target video from a network through a browser process.
Step S32: and sending the image data to be displayed to an image display layer through a second process according to a preset acceleration strategy so as to enable the image display equipment to display an image according to the image data of the image display layer, wherein the second process is different from the first process, and the preset acceleration strategy is used for accelerating the processing speed of the image data to be displayed.
In this embodiment, since the first process is a browser process and the browser is a third-party application, the terminal can only set a storage location of the image data to be displayed, which is obtained by the terminal, and cannot improve the working principle of the terminal. However, because the browser has limited performance, the speed is slow when the image data is filled into the image display layer, so in this embodiment, the terminal creates another independent process, that is, a second process, in addition to the browser process, where the second process may be used to process the image data, and the terminal stores the image data acquired by the browser process into the image display layer through the second process.
Specifically, after the terminal acquires the image data to be displayed through the browser process, the image data to be displayed is not directly stored in the memory of the image display layer, but is delivered to the second process, and because the second process is a process created by the terminal, the terminal can set the working principle of the terminal and add some acceleration strategies to the terminal, so that the second process can quickly store the image data to be displayed in the memory of the image display layer according to the acceleration strategies, and the image display speed of the image display device is further increased.
Illustratively, when a user controls a display picture of an image display device to be switched from a picture of a program 1 to a picture of a program 2 through a remote control device, a terminal first acquires image data corresponding to the program 2 through a browser process, and then stores the image data corresponding to the program 2 into an image display layer through a second process, so that the switching speed from the program 1 to the program 2 is ensured, and the phenomena of incomplete picture display and even unsmooth switching during switching are prevented, so that the fluency of picture switching can be effectively improved, and the program watching experience of the user is enhanced.
According to the image display method, the terminal firstly acquires the image data to be displayed through the first process, and then rapidly stores the image data to be displayed into the memory of the image display layer through the second process different from the first process, so that the image display device displays the image according to the image data of the image display layer. The method solves the problem that the browser cannot rapidly store the image data in the image display layer in the related art, improves the image data processing efficiency of the terminal, accelerates the image display speed of the image display device, and avoids the phenomena of image display delay and even blocking of the image display device. On the other hand, even if the user has a high-resolution image data display requirement, the terminal can rapidly store the high-resolution image data with large data volume into the image display layer, so that the image display speed of the image display device and the smoothness of image switching are ensured, and the viewing experience of the user can be effectively enhanced.
With reference to the foregoing embodiment, in an implementation manner, the present application further allocates a shared memory area for the first process and the second process, where the shared memory area is used to store the image data acquired by the first process, and the first process and the second process may operate on the image data in the shared memory area.
Specifically, the step S31 may include:
and acquiring image data to be displayed through a first process, and storing the image data to be displayed in a shared memory area.
Accordingly, the step S32 may include:
and reading the image data to be displayed from the shared memory area through a second process, and sending the image data to be displayed to an image display layer according to a preset acceleration strategy.
Fig. 4 is a schematic diagram illustrating an image display method according to an embodiment of the present application. In fig. 4, the terminal first creates a shared memory area for storing the image data acquired by the browser process, and the browser process and the second process can operate the image data in the shared memory area. Specifically, the browser process is responsible for writing the image data into the shared memory area, and the second process is responsible for reading the image data in the shared memory area according to a preset acceleration strategy and filling the image data into the memory of the image display layer.
In this embodiment, the terminal may set the storage location of the image data acquired by the browser process as the shared memory area, so that after the browser process acquires the image data to be displayed each time, the image data does not need to be directly stored in the memory of the image display layer, and meanwhile, convenience is provided for the second process to operate the image data to be displayed, and smooth implementation of the image display method of the present application is ensured.
With reference to the foregoing embodiments, in one implementation manner, the present application further provides a specific implementation method for sending image data to be displayed to an image display layer. Specifically, the step S32 may include:
when the resolution of the image data to be displayed is not equal to the resolution of the image display layer, adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration strategy;
and sending the adjusted image data to be displayed to an image display layer according to a preset acceleration strategy.
In this embodiment, the resolution is the width and height data of an image, a video stream is composed of consecutive multi-frame images, each frame of image is composed of pixels with fixed width and height, and the width and height of the image are the image resolution. Each pixel point is represented by a fixed byte number in the computer field, for example, each pixel point is represented by 4 bytes in ARGB8888 format, and each pixel point is represented by 2 bytes in ARGB 1555. Common resolutions include CIF (352 × 288), D1(720 × 576), 720P (1280 × 720), 1080P (1920 × 1080), 4K (3840 × 2160), etc., which are not limited in this embodiment.
In this embodiment, the preset acceleration policy may adjust the resolution of the image data, and may also implement fast copy of the image data to the image display layer. Referring to fig. 4, when the resolution of the image data read from the shared memory area by the second process is smaller than the resolution of the image display layer, the second process first scales the image data, so as to scale the image data with the smaller resolution into the image data with the larger resolution, and then stores the scaled image data into the image display layer.
Correspondingly, the second process has the function of graphical zooming, so that the first process can obtain image data with lower resolution when obtaining the image data, thereby realizing the quick writing of the image data into the shared memory area and further shortening the time delay of the terminal for responding to the request of the user.
For example, when a user needs to switch a display screen of the image display device from program 1 to program 2, the browser process may preferentially acquire image data corresponding to program 2 with a smaller resolution, so that the image data corresponding to program 2 may be quickly written into the shared memory area, and meanwhile, the second process may also quickly read image data corresponding to program 2 and store the image data in the image display layer, which, overall, reduces a delay of the terminal responding to the user requesting program 2.
In an actual implementation process, when the first process acquires target image data, if the target image data with a smaller resolution cannot be acquired, the target image data with a larger resolution can be directly acquired, at this time, the second process can still quickly copy the target image data with a larger resolution to the image display layer through a quick copy function in a preset acceleration strategy, and compared with a mode that the target image data is directly copied to the image display layer through a browser process in the related art, the method can still ensure the image display speed of the image display device and the fluency of image switching.
In this embodiment, the preset acceleration policy may adjust the resolution of the image data, and may also implement fast copy of the image data to the image display layer, so that when the first process acquires the image data, the image data with a smaller resolution may be acquired, fast write-in of the image data to the shared memory area may be implemented, and further, delay of the terminal in responding to the request of the user may be shortened.
With reference to the foregoing embodiment, in an implementation manner, adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration policy may include:
and adjusting the resolution of the image data to be displayed to the resolution of the image display layer by adopting a graphic acceleration algorithm.
Correspondingly, sending the image data to be displayed to an image display layer according to a preset acceleration strategy may include:
and sending the image data to be displayed to an image display layer by adopting a graphic acceleration algorithm.
In this embodiment, the graphics acceleration algorithm can achieve fast processing of image data by the terminal. The graphics acceleration algorithm may be various, and the present embodiment does not specifically limit this. For example, an optional Graphics acceleration algorithm may be implemented by a Two Dimensional accelerator (TDE) of a haisi platform, where the TDE provides a fast Graphics drawing function for an On Screen Display (OSD) and a Graphical User Interface (GUI) by using hardware, and mainly includes: fast bitmap shifting, fast color filling, fast anti-flash shifting, fast bitmap scaling, dot drawing, horizontal/vertical line drawing, bitmap format conversion, bitmap alpha superposition, bitmap bitwise boolean operations, and the like. Thus, based on the graphics acceleration algorithm, the second process can quickly copy the image data to be displayed to the image display layer.
In this embodiment, the preset acceleration strategy may also implement scaling of graphics with different resolutions. For example, the process of TDE-based graphics scaling is shown in fig. 5A. Fig. 5A is a schematic diagram illustrating a scaling principle of a graph according to the present embodiment. In fig. 5A, the resolution of 3 × 3 may be enlarged to a resolution of 6 × 6.
Fig. 5B is a schematic diagram illustrating an accelerated display of image data according to an embodiment of the present application. In fig. 5B, the first process is responsible for writing the low-resolution image data into the shared memory area, and the second process is responsible for scaling the low-resolution image data to obtain the high-resolution image data and copying the high-resolution image data into the image display layer at an accelerated speed.
In this embodiment, the preset acceleration strategy adopts a graph acceleration algorithm, which can not only achieve the scaling of the resolution of the image data, but also achieve the fast copy of the image data to the image display layer, thereby ensuring the image display speed of the image display device and the fluency of the image switching.
With reference to the foregoing embodiments, in an implementation manner, the shared memory area allows a process to have access right at the same time. Therefore, storing the image data to be displayed in the shared memory area may include:
and when the first process has the authority of accessing the shared memory area, storing the image data to be displayed in the shared memory area.
Correspondingly, reading the image data to be displayed from the shared memory area through a second process may include:
and when the second process has the authority of accessing the shared memory area, reading the image data to be displayed from the shared memory area through the second process.
In this embodiment, considering that the first process and the second process may cause an error in the image data in the shared memory region when operating the image data in the shared memory region, the terminal may set the permission of the first process and the second process to access the shared memory region when creating the first process and the second process, for example, set the operation permission of the first process and the second process to the shared memory region as mutual exclusion.
In this embodiment, the terminal may control the authority of the first process and the second process to access the shared memory area in any manner, which is not specifically limited in this embodiment.
With reference to the foregoing embodiment, in an implementation manner, the present application further provides a method for controlling a right of a first process and a second process to access a shared memory region, so as to implement mutually exclusive operation of the first process and the second process on the shared memory region, where the method specifically includes:
creating a first semaphore and a second semaphore based on the semaphore mechanism;
and controlling the first process and the second process to perform PV operation on the first semaphore and the second semaphore respectively so as to control the permission of the first process and the second process for accessing the shared memory region.
In this embodiment, the semaphore is mainly used to protect the resources in the shared memory region (i.e., the image data to be filled into the image display layer), and only supports two operations, P operation (wait operation) and V operation (send operation). The P operation is used for acquiring resources in the shared memory area, the V operation is used for releasing the resources in the shared memory area, and the P operation and the V operation are realized based on the sv value of the semaphore. And P (sv) operation, namely, judging whether the sv value is greater than 0, if so, executing subtraction operation on the sv value, namely, acquiring semaphore resources, otherwise, executing suspension waiting until the sv value is greater than 0. The operation v (sv) is to add 1 to sv value to make other suspended processes continue to run. And each semaphore needs to initialize a sv value before use.
Illustratively, the terminal first creates the first semaphore sem0 and the second semaphore sem1, assigns an initial value 1 to the first semaphore sem0, and assigns an initial value 0 to the second semaphore sem1, and sets the first process to first perform a P operation on the first semaphore sem0, and the second process to first perform a P operation on the second semaphore sem 1.
When the first process needs to write the image data into the shared memory region, the first process determines that the value 1 of the first semaphore sem0 is greater than 0 and has the authority to operate on the shared memory region, the first process continues to perform a P operation on the first semaphore sem0, that is, a 1 subtraction operation, then writes the image data into the shared memory region, and performs a V operation on the second semaphore sem1 after the writing is completed, that is, a 1 addition operation, so that the value of the second semaphore sem1 becomes 1, and the purpose is to give the authority to access the shared memory region next time to other processes (at this time, the other processes are the second processes). Meanwhile, when the first process performs a P operation on the first semaphore sem0, the second process determines that the value 0 of the second semaphore sem1 is not greater than 0 and does not have the authority to operate on the shared memory region, the second process cannot perform the P operation on the second semaphore sem1, and continues to maintain the waiting state, and when the first process performs a V operation on the second semaphore sem1, the value of the sem1 is 1, and the second process determines that the value 1 of the second semaphore sem1 is greater than 0 and has the authority to operate on the shared memory region, the second process continues to perform the P operation on the second semaphore sem1, reads image data from the shared memory region, and performs a V operation on the first semaphore sem0 after the reading is completed, so as to hand over the authority to access the shared memory region next time to other processes (at this time, the other processes are the first processes). Through the method, the mutual exclusion operation of the first process and the second process on the shared memory area can be realized.
Fig. 6A is a schematic diagram illustrating the operation of a PV according to an embodiment of the present application. Fig. 6B is a schematic diagram illustrating another PV operation according to an embodiment of the present application.
In fig. 6A, the first process first performs a P operation on the first semaphore sem0 (i.e., P in fig. 6A (sem0)), then writes the image data into the shared memory region, and performs a V operation on the second semaphore sem1 (i.e., V in fig. 6A (sem1)) after the writing is completed. Thereafter, the second process performs a P operation on the second semaphore sem1 once (i.e., P (sem1) in fig. 6A)), and then reads the image data from the shared memory, and performs a V operation on the first semaphore sem0 once after the reading is completed (i.e., V (sem0) in fig. 6A), that is: the first process and the second process alternately perform operations on the shared memory region.
In fig. 6B, the SV value is a value of the semaphore, and the terminal assigns 1 to the first semaphore sem0 and assigns 0 to the second semaphore sem0 in advance. The first process first determines that the value of the first semaphore sem0 is 1 greater than 0, continues to perform a P operation on the first semaphore sem0 (i.e., P (sem0) in fig. 6B), then writes the image data into the shared memory region, corresponds to sequence number 1, performs a V operation on the second semaphore sem1 after the writing is completed (i.e., V (sem1) in fig. 6B), corresponds to sequence number 2, and then continues to determine that the value of the first semaphore sem0 is 0 or less than 0, corresponds to sequence number 3, so that the first process cannot continue to perform a P operation on the first semaphore sem0, remains in a waiting state, and waits for the second process to perform an operation. At this time, the second process first determines that the value of the second semaphore sem1 is 1 greater than 0, performs a P operation on the second semaphore sem1 (i.e., P (sem1) in fig. 6B), then reads the image data from the shared memory region, corresponds to the serial number 4, performs a V operation on the first semaphore sem0 after the reading is completed (i.e., V (sem0) in fig. 6B), corresponds to the serial number 5, and then continues to determine that the value of the second semaphore sem1 is 0 or less than 0, corresponds to the serial number 6, and thus cannot continue to perform the P operation on the second semaphore sem1, remains in the waiting state, and waits for the first process to perform the operation.
In this embodiment, the terminal controls the permission of the first process and the second process for accessing the shared memory region based on the PV operation of the semaphore mechanism, so as to implement the mutual exclusion operation of the first process and the second process on the shared memory region, thereby achieving the purpose of protecting the image data in the shared memory region, and ensuring that the image data acquired by the first process can be accurately displayed by the second process in the image display device.
In one embodiment, when the image display method of the present application is applied to the environment shown in fig. 1, the first process is a process for running a browser, the image display layer is used for storing image data of the browser, and the image display device is used for displaying a browser page according to the image data of the browser. On this basis, before step S31, the image display method of the present application may further include:
receiving an acquisition request of a target resource sent by a remote control device, wherein the acquisition request of the target resource is generated by the remote control device in response to the operation of a user on the browser page.
Accordingly, step S31 may include:
determining image data to be displayed according to the target resource;
and acquiring the image data to be displayed by running the process of the browser.
Fig. 7A is a schematic view of a browser page according to an embodiment of the present application. Fig. 7B is a schematic view of another browser page according to an embodiment of the present application.
After the terminal is started, the browser process acquires image data to be displayed and writes the image data into the shared memory area, the second process acquires the image data to be displayed from the shared memory area and fills the image data into the image display layer, the image display device displays a corresponding picture according to the image data in the image display layer, for example, the displayed picture is as shown in fig. 7A, and the focus is defaulted to be in a first menu item (namely, real-time viewing). When the user presses the right key through the remote control device, the browser process retrieves new image data, and the second process stores the new image data in the image display layer, so that the image display device displays a corresponding picture, where the displayed picture is as shown in fig. 7B, and the focus is at the second menu item (i.e., "video on demand").
In the above process, when the user presses the right key through the remote control device, the acquisition request of the target resource sent to the terminal by the remote control device is a selected state for acquiring the second menu item, and the terminal determines that the image data to be displayed is the corresponding image data when the second menu item is selected.
According to the image display method, the terminal firstly acquires the image data to be displayed through the first process, and then rapidly stores the image data to be displayed into the memory of the image display layer through the second process different from the first process, so that the image display device displays the image according to the image data of the image display layer. The method solves the problem that the browser cannot rapidly store the image data in the image display layer in the related art, improves the image data processing efficiency of the terminal, accelerates the image display speed of the image display device, and avoids the phenomena of image display delay and even blocking of the image display device. On the other hand, even if the user has a high-resolution image data display requirement, the terminal can rapidly store the high-resolution image data with large data volume into the image display layer, so that the image display speed of the image display device and the smoothness of image switching are ensured, and the viewing experience of the user can be effectively enhanced.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Based on the same inventive concept, the present application further provides a terminal 800, as shown in fig. 8, where the terminal 800 is connected with an image display device. Fig. 8 is a block diagram illustrating a terminal according to an embodiment of the present application. Referring to fig. 8, a terminal 800 of the present application may include:
an obtaining module 801, configured to obtain image data to be displayed through a first process;
a sending module 802, configured to send, through a second process and according to a preset acceleration policy, the image data to be displayed to an image display layer, so that the image display device performs image display according to the image data of the image display layer, where the second process is different from the first process, and the preset acceleration policy is used to accelerate a processing speed of the image data to be displayed.
Optionally, the obtaining module 801 includes:
the first acquisition submodule is used for acquiring image data to be displayed through a first process and storing the image data to be displayed in a shared memory area;
the sending module 802 includes:
and the first sending submodule is used for reading the image data to be displayed from the shared memory area through a second process and sending the image data to be displayed to an image display layer according to a preset acceleration strategy.
Optionally, the sending module 802 includes:
the adjusting module is used for adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration strategy when the resolution of the image data to be displayed is not equal to the resolution of the image display layer;
and the second sending submodule is used for sending the adjusted image data to be displayed to the image display layer according to a preset acceleration strategy.
Optionally, the adjusting module includes:
the adjustment submodule is used for adjusting the resolution of the image data to be displayed to the resolution of the image display layer by adopting a graphic acceleration algorithm;
the second transmission submodule includes:
and the third sending submodule is used for sending the image data to be displayed to an image display layer by adopting a graphic acceleration algorithm.
Optionally, the shared memory area allows a process to have access right at the same time; the acquisition sub-module includes:
the storage module is used for storing the image data to be displayed to the shared memory area when the first process has the authority of accessing the shared memory area;
the first sending submodule includes:
and the reading module is used for reading the image data to be displayed from the shared memory area through the second process when the second process has the authority of accessing the shared memory area.
Optionally, the terminal 800 further includes:
a creation module for creating a first semaphore and a second semaphore based on a semaphore mechanism;
and the control module is used for controlling the first process and the second process to perform PV operation on the first semaphore and the second semaphore respectively so as to control the permission of the first process and the second process for accessing the shared memory region.
Optionally, the terminal is equipped with a browser, the first process is a process for running the browser, the image display layer is configured to store image data of the browser, and the image display device is configured to display a browser page according to the image data of the browser; the terminal 800 further includes:
the system comprises a receiving module, a processing module and a display module, wherein the receiving module is used for receiving an acquisition request of a target resource sent by a remote control device, and the acquisition request of the target resource is generated by the remote control device in response to the operation of a user on a browser page;
the obtaining module 801 includes:
the determining submodule is used for determining image data to be displayed according to the target resource;
and the second acquisition submodule is used for acquiring the image data to be displayed by running the process of the browser.
Based on the same inventive concept, the present application provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the electronic device implements the steps in the image display method according to any of the above embodiments of the present application.
Based on the same inventive concept, the present application provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps in the image display method according to any of the above-described embodiments of the present application.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The image display method, the terminal, the electronic device and the storage medium provided by the present invention are described in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. An image display method is applied to a terminal, the terminal is connected with an image display device, and the method comprises the following steps:
acquiring image data to be displayed through a first process;
and sending the image data to be displayed to an image display layer through a second process according to a preset acceleration strategy so as to enable the image display equipment to display an image according to the image data of the image display layer, wherein the second process is different from the first process, and the preset acceleration strategy is used for accelerating the processing speed of the image data to be displayed.
2. The method of claim 1, wherein obtaining image data to be displayed by a first process comprises:
acquiring image data to be displayed through a first process, and storing the image data to be displayed in a shared memory area;
sending the image data to be displayed to an image display layer according to a preset acceleration strategy through a second process, wherein the second process comprises the following steps:
and reading the image data to be displayed from the shared memory area through a second process, and sending the image data to be displayed to an image display layer according to a preset acceleration strategy.
3. The method according to claim 1, wherein sending the image data to be displayed to an image display layer according to a preset acceleration strategy comprises:
when the resolution of the image data to be displayed is not equal to the resolution of the image display layer, adjusting the resolution of the image data to be displayed to the resolution of the image display layer according to a preset acceleration strategy;
and sending the adjusted image data to be displayed to an image display layer according to a preset acceleration strategy.
4. The method according to claim 3, wherein adjusting the resolution of the image data to be displayed to the resolution size of the image display layer according to a preset acceleration strategy comprises:
adjusting the resolution of the image data to be displayed to the resolution of the image display layer by adopting a graphic acceleration algorithm;
sending the image data to be displayed to an image display layer according to a preset acceleration strategy, comprising:
and sending the image data to be displayed to an image display layer by adopting a graphic acceleration algorithm.
5. The method of claim 2, wherein the shared memory region allows a process to have access to the shared memory region at the same time; storing the image data to be displayed in a shared memory area, including:
when the first process has the authority of accessing the shared memory area, storing the image data to be displayed in the shared memory area;
reading the image data to be displayed from the shared memory area through a second process, including:
and when the second process has the authority of accessing the shared memory area, reading the image data to be displayed from the shared memory area through the second process.
6. The method of claim 5, further comprising:
creating a first semaphore and a second semaphore based on the semaphore mechanism;
and controlling the first process and the second process to perform PV operation on the first semaphore and the second semaphore respectively so as to control the permission of the first process and the second process for accessing the shared memory region.
7. The method according to claim 1, wherein the terminal is installed with a browser, the first process is a process for running the browser, the image display layer is used for storing image data of the browser, and the image display device is used for displaying a browser page according to the image data of the browser; before acquiring image data to be displayed through the first process, the method further includes:
receiving an acquisition request of a target resource sent by a remote control device, wherein the acquisition request of the target resource is generated by the remote control device in response to the operation of a user on the browser page;
acquiring image data to be displayed through a first process, comprising:
determining image data to be displayed according to the target resource;
and acquiring the image data to be displayed by running the process of the browser.
8. A terminal connected to an image display device, the terminal comprising:
the acquisition module is used for acquiring image data to be displayed through a first process;
and the sending module is used for sending the image data to be displayed to an image display layer through a second process according to a preset acceleration strategy so as to enable the image display equipment to display an image according to the image data of the image display layer, wherein the second process is different from the first process, and the preset acceleration strategy is used for accelerating the processing speed of the image data to be displayed.
9. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the image display method according to any one of claims 1 to 7.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing performs the steps of the image display method according to any of claims 1-7.
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