WO2021008427A1

WO2021008427A1 - Image synthesis method and apparatus, electronic device, and storage medium

Info

Publication number: WO2021008427A1
Application number: PCT/CN2020/100978
Authority: WO
Inventors: 胡杰; 易永鹏
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-07-17
Filing date: 2020-07-09
Publication date: 2021-01-21
Also published as: CN110413245A

Abstract

Disclosed in the present application are an image synthesis method and apparatus, an electronic device, and a storage medium. The method comprises: obtaining current power consumption of an electronic device and multiple image layers of an image to be displayed; determining whether the current power consumption is above a preset threshold; if yes, using a multimedia display processor to synthesize the multiple image layers and display same, and if not, using a graphics processing unit to synthesize the multiple image layers and display same. Different image layer synthesis modes are selected according to the current power consumption of an electronic device, if the power consumption of the electronic device is high, a low energy consumption synthesis mode is selected to balance the power consumption of the electronic device, and if the power consumption of the electronic device is low, a synthesis mode having high synthesis capability is selected to improve the image processing performance.

Description

Image synthesis method, device, electronic equipment and storage medium

This application claims the priority of the Chinese patent application with the application number 201910647109.7 filed on July 17, 2019, and the entire content of which is incorporated herein by reference.

Technical field

This application relates to the field of image processing technology, and more specifically, to an image synthesis method, device, electronic equipment, and storage medium.

Background technique

With the development of electronic technology, there are more and more electronic devices (such as mobile phones or tablet computers) with image display functions. The display interface of electronic devices usually has multiple display layers, which are displayed by combining multiple display layers. On electronic devices.

Generally, when an electronic device synthesizes layers, it is difficult to balance the layer synthesis capability of the electronic device and the power consumption of the electronic device, which affects the use experience of the electronic device.

Summary of the invention

This application proposes an image synthesis method, device, electronic device, and storage medium to solve the problem that the layer synthesis capability and the power consumption of the electronic device are difficult to balance in image synthesis.

In a first aspect, an embodiment of the present application provides an image synthesis method, which includes: obtaining the current power consumption of an electronic device and multiple layers of an image to be displayed; determining whether the current power consumption is higher than a preset threshold; If yes, use a multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the multiple layers; if not, use a graphics processor (GPU, Graphics Processing Unit) to perform the multiple layers Composite and display.

In the second aspect, an embodiment of the present application provides an image synthesis device, which includes: an acquisition module for acquiring the current power consumption of an electronic device and multiple layers of an image to be displayed; a judgment module for judging Whether the current power consumption is higher than the preset threshold; the synthesis module is used to synthesize and display the multiple layers by using a multimedia display processor (MDP, Multimedia Display Processor) if so; if not, use graphics processing A GPU (Graphics Processing Unit) synthesizes and displays the multiple layers.

In a third aspect, an embodiment of the present application provides an electronic device that includes one or more processors; a memory; one or more application programs, wherein the one or more application programs are stored in the memory And is configured to be executed by the one or more processors, and the one or more programs are configured to execute the method applied to the electronic device as described above.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium in which program code is stored, wherein the above-mentioned method is executed when the program code is running.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

Fig. 1 shows a logical framework diagram of image processing provided by an embodiment of the present application.

Figure 2 shows a schematic diagram of a desktop display interface provided by an embodiment of the present application.

Fig. 3 shows a schematic diagram of various layers of a desktop display interface provided by an embodiment of the present application.

Fig. 4 shows a flowchart of an image synthesis method provided by an embodiment of the present application.

Fig. 5 shows a flowchart of an image synthesis method provided by another embodiment of the present application.

Fig. 6 shows a flowchart of an image synthesis method provided by another embodiment of the present application.

Fig. 7 shows a flowchart of an image synthesis method provided by still another embodiment of the present application.

Fig. 8 shows a functional block diagram of an image synthesis device provided by an embodiment of the present application.

Fig. 9 shows a structural block diagram of an electronic device proposed by an embodiment of the present application for executing the image synthesis method according to the embodiment of the present application.

FIG. 10 shows a storage medium provided by an embodiment of the present application for storing or carrying program code for implementing the image synthesis method according to the embodiment of the present application.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

An application can create a window through the Windows manager. The window manager creates a drawing surface for each window to draw various elements that need to be displayed on it, and each surface corresponds to one Layer, that is, a layer can be drawn on each surface.

In the display interface (such as Activity), multiple layers can be included, such as navigation bar, status bar, program interface, etc. Each layer is rendered before composition. That is, each layer is drawn on the corresponding surface, that is, the corresponding layer is drawn on each surface. Specifically, you can use the hardware accelerated renderer (HWUI) and/or Skia graphics library to draw on the surface's canvas (cavas) Perform layer drawing.

The system then uses the layer transfer module (Surface Flinger) service to synthesize each surface, that is, synthesize each layer. Among them, the SurfaceFlinger service runs in the system process and is used to uniformly manage the frame buffer of the system. SurfaceFlinger obtains all the layers, and can use the graphics processor (GPU, Graphics Processing Unit) to synthesize all or part of the layers. The result is saved to the frame buffer (FrameBuffer). The hardware layer mixer (HWC, Hardware Composer) can synthesize the results of SurfaceFlinger through GPU synthesis with other layers. Specifically, as shown in Figure 1, HWC can call the Multimedia Display Processor (MDP, Multimedia Display Processor). The composition of the layers finally forms a Buffer in the BufferQueue, and then under the action of the display driver, the image synthesized in the Buffer is used for display. Among them, the specific synthesis strategy of which part of the layer is synthesized by the GPU and the HWC can be determined according to the actual situation.

The display screen of the electronic device can display the display interface, and the display interface may include multiple layers, that is, the display interface is composed of multiple layers. Among them, each layer is composed of many pixels, and each layer is superimposed to form the entire image to form the display interface of the electronic device. Layers can accurately locate elements on the page. Text, pictures, tables, plug-ins can be added to the layer, and layers can also be nested inside. For layers and images synthesized by layers, it can be generally understood that a layer is like a film containing elements such as text or graphics. The layers are stacked in a specified order to form the final image. The effect is the image formed by the combination of layers, such as the display interface of an electronic device. Of course, it is understandable that the layers are not real films, and the above description is just a metaphor for easy understanding. For example, the desktop display interface 100 of the electronic device shown in FIG. 2 includes multiple layers, including a status bar 101, a navigation bar 102, a wallpaper 103, and an icon layer 104.

In order to display the display interface on the display screen, it is necessary to synthesize the layers of the display interface. For example, the status bar 101, the navigation bar 102, the wallpaper 103, and the icon layer 104 shown in FIG. 3 are synthesized into the display interface 100 shown in FIG. 2. Generally, the system can use the GPU to synthesize image layers. The synthesis method can be to determine the positional relationship between each layer according to the position of each layer in the display interface, and render the content of each layer to the GPU. In the temporary storage buffer, the positional relationship between the various layers in the buffer is the positional relationship in the display interface. Finally, the temporary storage buffer is transmitted to the display hardware, so that when each layer is displayed on the screen, the image The display position of the layer is its position in the display interface. However, when the GPU is used to process image layers, when the GPU is synthesizing layers, it has a strong synthesis ability, that is, there is no limit to the number of synthesized layers, but at the same time, it will generate greater power consumption and reduce the cost of electronic equipment. The standby time is long, thus affecting the user experience.

The inventor found through research that the layers can also be synthesized through the hardware synthesis mechanism of the Multimedia Display Processor (MDP). The MDP hardware synthesis mechanism uses the HWC to call the MDP hardware module for synthesis. This synthesis method has low power consumption and high speed, but has a limit on the number of layers to be processed. When the number of layers exceeds the number that can be processed, the task of layer synthesis cannot be completed, which affects the display on the screen.

That is to say, if you use GPU image for layer synthesis, although there is no limit to the number of layers processed compared to MDP synthesis, the power consumption is higher, which affects the operating speed and standby time of electronic devices; if you use MDP For layer composition, although the power consumption is low, the number of layers that can be processed is limited. If the scene cannot be processed with too many layers, the layer composition task cannot be completed at one time. It is necessary to divide the layers of a display interface into multiple times Perform synthesis, which affects the overall synthesis speed. Therefore, the inventor proposes the image synthesis method, device, electronic equipment, and storage medium in this application as a synthesis strategy to select the device for layer synthesis according to the current power consumption of the electronic equipment. If the current power consumption of the electronic device is higher than the preset threshold, layer composition is performed through MDP; if the current power consumption of the electronic device is lower than or equal to the preset threshold, layer composition is performed through GPU. Choose different layer synthesis methods according to the current power consumption of the electronic device. In the case of high power consumption of the electronic device, select the synthesis method with low energy consumption to balance the power consumption of the electronic device. In this case, a synthesis method with a strong layer synthesis capability is selected so as to take into account both the layer synthesis capability and the power consumption of the electronic device.

The embodiments of the present application will be described in detail below.

Referring to FIG. 4, an embodiment of the present application provides an image synthesis method. The execution subject of the processing procedure described in this embodiment may be an electronic device or a processor in the electronic device. The specific method may include:

Step S110: Obtain the current power consumption of the electronic device and multiple layers of the image to be displayed.

Electronic equipment will generate power consumption during operation. Among them, power consumption is an indicator that all electronic devices have, referring to the amount of energy consumed per unit time, and the unit can be watts (W). If the power consumption of the electronic device is too high, problems such as heat generation, slower operation speed, and rapid decrease of stored remaining power are likely to occur.

In addition, the electronic device displays the display interface on the display screen during the display process. As the image to be displayed, the display interface displayed on the display screen includes multiple layers. Before displaying, it is necessary to obtain each layer of the image to be displayed to be used for compositing each layer. It is understandable that the image to be displayed in this solution is an image displayed on the display screen, and specifically may be a display interface for display on the display screen.

Since power consumption will be generated during the layer synthesis process, in the embodiment of the present application, the current power consumption of the electronic device can be obtained. Specifically, if the electronic device is a mobile terminal, the power consumption of the electronic device can be mainly divided into four major blocks, Central Processing Unit (CPU)/GPU, screen, cellular/WiFi/data, and sensor. The performance of the power consumption of the electronic device may be the degree of change of the remaining power of the electronic device or the GPU load rate. Thus, acquiring the current power consumption of the electronic device may be acquiring the degree of change in the remaining power of the electronic device or acquiring the load of the GPU of the electronic device.

Step S120: Determine whether the current power consumption is higher than a preset threshold.

Wherein, a preset threshold is preset, and the preset threshold may be a critical value of the power consumption of the electronic device. When it is greater than the critical value, the electronic device's data processing ability will be significantly reduced, which is likely to cause undesirable phenomena such as jams. When the current power consumption is less than or equal to the critical value, the electronic device is at a normal data processing level and will not cause stalls and other phenomena. Of course, the preset threshold value may also be a value slightly smaller than the critical value, which is not limited in the embodiment of the present application.

Since there are many parameters that characterize the power consumption of the electronic device, the preset threshold can be set according to specific parameters. For example, if the parameter characterizing the power consumption of the electronic device is the amount of change in the power of the electronic device, then the corresponding power change threshold can be set as the preset threshold, and if the parameter characterizing the power consumption of the electronic device is the GPU load of the electronic device Rate, the corresponding load rate can be set as the preset threshold. Then, when the current power consumption is acquired, it can be determined whether the current power consumption is higher than the preset threshold according to the magnitude relationship between the current power consumption and the preset threshold.

Step S130, if yes, use a multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the plurality of layers; if not, use a graphics processor (GPU, Graphics Processing Unit) to synthesize and display the multiple layers The layers are combined and displayed.

In electronic devices, there can be multiple ways to synthesize and display multiple layers. For example, in electronic devices using the Android system, there are two ways to synthesize images. One is to use a graphics processor (GPU , Graphics Processing Unit) synthesize and display the multiple layers, that is, the GPU synthesis method; the other is to use the multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the layers, that is, the MDP synthesis method .

If the electronic device uses the GPU to synthesize image layers for a long time, it will usually cause heavy tasks on the GPU, resulting in higher power consumption; if the electronic device has been using MDP to synthesize image layers, due to its processing of layers The number is limited. When the scene contains many layers, the layer composition task cannot be completed at one time, which affects the composition speed.

Specifically, GPU is a general-purpose graphics processor, which is stronger than MDP in graphics processing. In addition to 2D image processing, it can also do 3D image processing, special effects, etc. It can superimpose multiple layers at once, but The power consumption is relatively high. The MDP is a dedicated display image processing unit, which can do conventional 2-dimensional image processing, and is mainly used for composite overlay of multiple layers. The main advantage of MDP is low power consumption, but the number of layers for a performance synthesis is limited. Among them, the number of layers synthesized by MDP at one time corresponds to the number of FIFO pipes in MDP. The more layers that MDP can superimpose at one time, the more FIFO pipes are needed inside. These are more expensive circuits. Therefore, MDP The more layers that can be synthesized, the higher the cost. In the high-end platforms of some manufacturers, the MDP has only 8 FIFO pipes at most, and can synthesize and superimpose up to 8 layers at a time. On the low-end platform, an MDP may only have 4 FIFO pipes, and it can only be used at a time. Overlay 4 layers. Therefore, in electronic equipment, the maximum number of layers that MDP can synthesize at one time is limited. When the display interface includes multiple layers, if the MDP is used for synthesis, although the power consumption is low, it may not be possible to perform all the layers at once. Synthesis may require multiple synthesis or use other synthesis methods to synthesize together, etc., which affects the speed of synthesis.

Therefore, the advantages and disadvantages of the GPU composite layer and the MDP composite layer can be combined. When the power consumption of the electronic device is higher than the preset threshold, it indicates that the current electronic device has a high power consumption. In order to reduce power consumption, reduce If too high power consumption affects the operating speed and power of the electronic device, you can choose a synthesis method with lower power consumption, that is, the MDP method, to synthesize the layers to balance the power consumption of the electronic device; the power consumption of the electronic device is low When it is equal to or equal to the preset threshold value, it indicates that the current electronic device has low power consumption. The GPU method, which has a strong layer synthesis ability, can be selected to synthesize the layers, thereby taking into account both the layer synthesis ability and the electronic device Power consumption.

The image synthesis method proposed in this application obtains the current power consumption of the electronic device and multiple layers of the image to be displayed; determines whether the current power consumption is higher than a preset threshold; if so, uses a multimedia display processor (MDP, Multimedia Display Processor) synthesizes and displays the multiple layers, if not, then synthesizes and displays the multiple layers using an image processor (GPU, Graphics Processing Unit). Choose different layer synthesis methods according to the current power consumption of the electronic device. In the case of high power consumption of the electronic device, select the synthesis method with low power consumption to balance the power consumption of the electronic device. In this case, a synthesis method with a strong layer synthesis capability is selected so as to take into account both the layer synthesis capability and the power consumption of the electronic device.

Referring to FIG. 5, another embodiment of the present application provides an image synthesis method. On the basis of the foregoing embodiment, this embodiment focuses on describing the difference between the layer resolution and the device resolution before layer synthesis. Coping methods, the method can include:

Step S210: Obtain the current screen resolution of the electronic device.

Among them, the screen resolution refers to the number of pixels that the monitor can display. When the screen size is the same, the higher the resolution, the finer and more delicate the display effect. Generally, the screen resolution of the electronic device can be changed, and the user can change the screen resolution according to his own needs. The electronic device responds to the user's operation of changing the resolution and sets the screen resolution to the resolution selected by the user.

When the screen resolution does not match the resolution of the image to be displayed, the image to be displayed cannot be displayed normally on the electronic device. Therefore, in order to prevent the image to be displayed from being abnormal due to the incompatibility with the screen resolution For display, the current screen resolution of the electronic device can be obtained to adjust the resolution of the image to be displayed and the screen resolution to fit. Wherein, the acquired screen resolution of the electronic device is the resolution currently selected by the electronic device. For example, the current resolution of the electronic device can be 2160x1080 and 1440x720. If the resolution selected by the user is 2160x1080, then the current screen resolution of the electronic device is 2160x1080.

Step S220: Acquire the current power consumption of the electronic device and multiple layers of the image to be displayed.

For step S220, reference may be made to the corresponding part of the foregoing embodiment, which is not repeated here.

Step S230: Adjust the resolution of each of the multiple layers according to the screen resolution.

When the screen resolution of the display interface is obtained, continue to obtain the resolution of the image to be displayed, and determine the resolution of multiple layers of the image to be displayed.

Optionally, it can be determined whether the resolution of any of the multiple layers of the image to be displayed does not match the screen resolution. If yes, you can adjust the resolution of each of the multiple layers separately according to the screen resolution; if not, that is, if the resolution of multiple layers is the same as the screen resolution, it is not necessary The resolution adjustment is performed on the image to be displayed, that is, no resolution adjustment is performed on any layer of the image to be displayed. The resolution mismatch may be a difference in resolution.

Wherein, when it is judged whether the resolution of a layer in the multiple layers of the image to be displayed does not match the screen resolution, it can be judged in turn whether the resolution of each layer matches the screen resolution. If it is determined that the resolution of a layer does not match the resolution of the screen, it can be determined that the resolution of a layer of multiple layers does not match the screen resolution. Optionally, when judging whether the resolution of each layer matches the screen resolution in turn, when it is judged that the resolution of a layer does not match the screen resolution, the judgment may not be continued; if it is not judged When the resolution of a layer does not match the resolution of the screen, it continues to determine whether the resolution of the next layer matches the screen resolution.

After determining the multiple layers of the image to be displayed, the resolution of each layer can be adjusted according to the screen resolution. Specifically, the resolution of the layer whose resolution is adapted to the screen resolution may be kept unchanged, and the resolution of the layer whose resolution is not adapted to the screen resolution is adjusted to be distinguished from the screen resolution. Rate adaptation, thereby reducing the amount of data processing. For example, the image to be displayed is a desktop scene, and the layers obtained after image layering are the wallpaper layer, the status bar layer, the navigation bar layer, and the icon layer. For details, please refer to FIGS. 2 and 3. If the resolution of the current wallpaper layer matches the screen resolution, keep the resolution of the wallpaper layer unchanged. If the resolutions of the status bar layer, navigation bar layer and icon layer are all incompatible with the screen resolution , It is necessary to perform resolution conversion on the images of the status bar layer, the navigation bar layer and the icon layer, and convert the resolution to be adapted to the screen resolution.

Specifically, the screen resolution corresponding to the display screen of the electronic device may refer to the number of pixels in the horizontal and vertical directions of the screen, the unit is px, 1px=1 pixel, for example, if vertical pixels * horizontal pixels represent the screen resolution , The resolution of a screen with 1960 pixels in the vertical direction and 1080 pixels in the horizontal direction is 1960*1080. In the embodiments of the present application, for ease of understanding, the image resolution is defined in a representation corresponding to the screen resolution, that is, the image resolution is defined as the pixel size of the image, that is, the number of pixels in the horizontal and vertical directions of the image, the unit is px, 1px= 1 pixel, such as vertical pixel * horizontal pixel represents the image resolution, the resolution of an image with 1960 pixels in the vertical and 1080 pixels in the horizontal is 1960*1080. When the screen resolution of the electronic device does not match the image resolution of the image, the image display will be abnormal. Specifically, the actual display physical size of the image may be different from the physical size when the image is designed. Among them, the physical size of the image is defined by device independent pixels (dp), and the screen resolution and the image resolution are adapted to keep the dp of the image unchanged.

When determining whether the resolution of each layer matches the screen resolution, it can be judged whether the resolution of the picture in each layer matches the screen resolution, that is, it is judged that the picture is at the current resolution under the screen resolution. In the case of whether it can be displayed in the dp to be displayed in the picture. In combination with the foregoing description, the judgment process can be, for example, obtaining the dp value of the picture, determining the screen density according to the screen resolution, and determining whether the corresponding resolution of the dp value of the picture at the screen density is consistent with the current actual resolution of the picture, if Inconsistent, the resolution of the picture does not match the screen resolution. If it does not fit, it can be determined that the resolution of the layer does not fit the screen resolution, and the resolution of the picture whose resolution does not fit the screen resolution can be adjusted to fit the screen resolution. The actual resolution is adjusted to the resolution corresponding to the dp value of the picture under the screen density.

For the user to adjust the screen resolution of the display screen, for the same display screen, when the picture is adapted to the display screen resolution, when the screen resolution is increased, the pixel density (dpi, dots per inch) of the screen will increase , If the image is to be adapted to the resolution of the screen, keeping the dp of the image unchanged, the pixel size of the image, that is, the resolution, should be increased by the corresponding increase in screen density; In the case of screen resolution, when the screen resolution is reduced, the pixel density (dpi, dots per inch) of the screen is reduced. If the image is adapted to the screen resolution and the dp of the image remains unchanged, the pixel density of the image The size, that is, the resolution, is reduced by a multiple corresponding to the reduction in screen density, so that the resolution of each layer can be adapted to the screen resolution.

Step S240: Determine whether the current power consumption is higher than a preset threshold.

Acquire the current power consumption of the electronic device, and the power consumption may be a parameter value that can reflect the power consumption of the electronic device, such as the change value of the power of the electronic device, or the GPU load rate. Then the corresponding preset threshold may be the preset change threshold of the power or the preset load rate of the CPU. If the change value of the power is greater than the preset change threshold, it can be determined that the current power consumption is higher than the preset threshold; if the GPU load rate is greater than the preset load rate, it can be determined that the current power consumption is higher than the preset threshold .

Step S250, if yes, use a multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the multiple layers; if not, use an image processor (GPU, Graphics Processing Unit) to synthesize and display the multiple layers The layers are combined and displayed.

When it is determined that the current power consumption is higher than the preset threshold, it indicates that the current power consumption of the electronic device is relatively high. In order to balance the power consumption of the electronic device, the MDP synthesis method can be used to synthesize the image layers, if the current If the power consumption is lower than or equal to the preset threshold, it indicates that the current electronic equipment has lower power consumption and better data processing performance, so you can use GPU synthesis to synthesize image layers.

Wherein, when the layers of the image are synthesized, the resolution of each layer obtained is adapted to the screen resolution of the display interface, and the layers can be synthesized and displayed directly. Each layer is drawn with a corresponding window, the windows corresponding to the multiple layers on the display interface can be obtained, and the multiple layers are displayed on the display interface of the electronic device according to the corresponding windows. For example, in the desktop scene, there are four layers: status bar, navigation bar, wallpaper, and icons. The system will provide a corresponding window for each layer, which determines the display position of the layer on the display screen, and then displays the corresponding layer in the corresponding window, which will be seen on the display interface of the electronic device The corresponding desktop scene.

The image synthesis method proposed in this application obtains the current screen resolution of the electronic device, and if the resolution of the image to be displayed is different from the screen resolution, the resolution adjustments are performed on the images of the multiple layers, so that each The resolution of the layer is adapted to the screen resolution of the display interface. If multiple layers with a resolution adapted to the screen resolution are obtained, the resolution is maintained, and then a different one is selected according to the power consumption. The way of synthesis, so as to balance and balance the synthesis capability and the low power consumption of electronic devices.

Please refer to FIG. 6, another embodiment of the present application provides an image synthesis method. Based on the foregoing embodiments, this embodiment focuses on determining whether the power consumption is higher than the The process of presetting the threshold may include:

Step S310: Obtain a change value of the remaining power of the electronic device within a preset time period and multiple layers of the image to be displayed.

Step S320: It is determined whether the change value of the remaining power of the electronic device within a preset time period is greater than a preset change threshold.

In the embodiment of the present application, the multiple layers of the image to be displayed refer to the corresponding part of the foregoing embodiment, which is not repeated here.

Since the higher the power consumption, the greater the power consumption. In this embodiment, the power consumption can be characterized by the change value of the remaining power of the electronic device within a preset time period. Obtaining the current power consumption of the electronic device may be obtaining a parameter value characterizing power consumption, and determining whether the current power consumption is higher than a preset threshold, or determining whether the obtained parameter value is higher than the preset corresponding to the parameter value Threshold.

In this embodiment, obtaining the parameter value that characterizes the power consumption may be obtaining the change value of the remaining power of the electronic device. If the power consumption of the electronic device is larger, the power consumption will be lower than normal in the same time period. If the power level is higher, the change in the remaining power will be greater than normal. When the electronic device is not being charged, the change value of the remaining power of the electronic device can be obtained to determine whether the power consumption of the electronic device is greater than a preset threshold. Specifically, a preset change threshold can be set in advance. This change threshold is the change value of the remaining power of the electronic device within a preset time period. Within the preset time period, if the change value of the remaining power of the electronic device is greater than the preset change Threshold, it can be considered that the power consumption of the electronic device is higher than the preset threshold.

Among them, obtaining the change value of the remaining power within a preset time period may be to obtain the remaining power of the electronic device at every preset time. For the remaining power obtained each time, if the remaining power is obtained from the last time If the difference is greater than the preset change threshold, it can be determined that the current power consumption is higher than the preset threshold. For example, the preset time period is 30s, the preset change threshold is 1%, the remaining power of the electronic device obtained for the first time is 78%, and the remaining power of the electronic device obtained after 30s is 76%, then the obtained The difference between the remaining power and the remaining power acquired at the last preset time is 78%-76%=2%, and if it is greater than the preset change threshold of 1%, it can be considered that the current power consumption is greater than the preset threshold.

The method for obtaining the remaining power of the electronic device is not limited in the embodiments of the present application. For example, it may be obtained by executing a command to obtain various information of the battery in the electronic device. The obtained various information includes the remaining battery Power, so that the electronic device can obtain the remaining power of its battery.

In step S330, if yes, use a multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the multiple layers; if not, use a graphics processor (GPU, Graphics Processing Unit) to synthesize and display the multiple layers. The layers are combined and displayed.

When the change value of the remaining power of the electronic device is greater than the preset threshold, it can be considered that the current power consumption of the electronic device is greater than the preset threshold, indicating that the current power consumption of the electronic device is relatively high, and a synthesis method with lower power consumption can be used The obtained multiple layers are combined. Then, when the change value of the electric power of the electronic device is greater than the preset threshold, the MDP is used to synthesize and display the multiple layers to balance the power consumption of the electronic device.

If the change value of the remaining power of the electronic device is less than or equal to the preset change threshold, it can be considered that the current power consumption of the electronic device is less than or equal to the preset threshold, indicating that the current power consumption of the electronic device is low, and the layer composition speed can be used The faster synthesis method synthesizes the acquired multiple layers. Then when the change value of the electric power of the electronic device is less than or equal to the preset threshold, the multiple layers are synthesized and displayed using the GPU synthesis method, so as to balance the synthesis capability and the low power consumption of the electronic device and balance.

In addition, when the synthesis mode is selected according to the relationship between the change value of the remaining power and the preset change threshold, it is possible that the change value of the remaining power of the electronic device fluctuates up and down the preset change threshold, resulting in constant switching of the synthesis mode. , It will produce more power consumption due to switching the synthesis mode back and forth. For example, when the change of the remaining power is less than the preset load rate, the GPU synthesis method is selected to synthesize the image. At this time, the change of the remaining power of the electronic device within the preset time period may be due to the high power consumption of GPU synthesis If it is greater than the preset change threshold, the electronic device will switch the synthesis mode to the MDP synthesis mode. After switching to the MDP synthesis mode, the change in the remaining power of the electronic device within the preset time period is due to the lower MDP synthesis power consumption. If it is lower than the preset change threshold, the electronic device will switch the synthesis mode to the GPU synthesis mode again, thus switching the synthesis mode back and forth to generate greater power consumption.

Therefore, optionally, a preset frequency can also be set in advance, where the preset frequency can be defined as the number of switching times of the layer synthesis mode within a preset time as the preset number, or the change in the remaining power Set the number of fluctuations up and down within the preset change threshold within a time period as the preset number of times, where the change from the preset threshold to the preset threshold is one fluctuation, and the switch from the preset threshold to the preset threshold is one fluctuation. If the fluctuation frequency of the change value of the remaining power is greater than the preset frequency, it can be determined that the current power consumption is higher than the preset threshold, and then select a synthesis method with lower power consumption to synthesize the layer, that is, select the MDP synthesis method The layers are synthesized and maintained for a certain period of time. The specific sustaining period is not limited in the embodiment of the present application. For example, a multimedia display processor may be used to synthesize multiple layers of the image to be displayed within a preset time. The fluctuation frequency of the changing value of the remaining power is the number of times the changing value of the remaining power fluctuates within a preset time within a preset change threshold. That is, it can be determined whether the fluctuation frequency of the change value of the remaining power is greater than the preset frequency, if so, it is determined that the current power consumption is higher than the preset threshold; if not, it is determined that the current power consumption is not higher than the preset threshold.

For example, the preset time is 2 minutes, the preset change threshold is 1%, and the preset frequency is 2. If the change value of the remaining power of the electronic device within the preset time period fluctuates around 1%, the remaining power is obtained The change value is 0.5%, 1.5%, 0.8%, 2%, 0.5%, 2%. It can be seen that the frequency of the change value of the remaining power fluctuates up and down the preset change threshold is 5, that is, the number of switching times of the layer synthesis mode If it is 5 times, which is greater than the preset frequency, it means that the current power consumption is higher than the preset threshold, and the MDP method can be used to synthesize the layers. Since the change of the remaining power is greater than the preset change threshold of 1%, the layer is synthesized by MDP synthesis, and when the change of the remaining power is less than or equal to the preset change threshold of 1%, the layer is synthesized by the GPU For synthesis, due to the high power consumption of the GPU synthesis method, which consumes a large amount of power, the change value of the remaining power will increase, and the synthesis mode will be continuously switched. Switching the synthesis mode at a high frequency within a certain period of time will also bring Additional power consumption, it can be determined that the current power consumption is higher than the preset threshold, you can select the MDP synthesis method to synthesize the layers and maintain them for a certain period of time to reduce the power consumption of the electronic device. It uses MDP to synthesize the layers within 10 minutes. The specific duration of a certain period of time can be set according to actual needs, which is not limited here.

The image synthesis method proposed in this application determines whether the change value of the remaining power of the electronic device within a preset time period is greater than a preset change threshold by obtaining the current power consumption of the electronic device and multiple layers of the image to be displayed, and if so, The GPU is used to synthesize and display the multiple layers; if not, the MDP is used to synthesize and display the multiple layers. The power consumption of the electronic device is determined by the power consumption of the electronic device. When the power consumption of the electronic device is high, the synthesis method with lower power consumption is selected to balance the power consumption of the electronic device. When the power consumption of the electronic device is low, use A synthesis method with a strong layer synthesis ability to improve image processing performance, so as to balance and balance the layer synthesis ability of the electronic device and the low power consumption of the electronic device.

Referring to FIG. 7, another embodiment of the present application provides an image synthesis method. Based on the foregoing embodiments, this embodiment focuses on determining whether the power is high when the power consumption is measured by the GPU load rate. In the process of presetting the threshold, the method may include:

Step S410: Obtain the current GPU load rate of the electronic device and multiple layers of the image to be displayed.

Step S420: Determine whether the current GPU load rate of the electronic device is greater than a preset load rate.

For the specific manner of obtaining multiple layers of the image to be displayed, reference may be made to the foregoing description, and details are not described herein again.

In addition, in the embodiment of the present application, the purpose of obtaining the power consumption of the electronic device is to determine whether the current power consumption of the electronic device is too high. Among them, in addition to judging the level of power consumption by direct parameter values such as power consumption, other parameter values that can map the level of power consumption can also be used as the power consumption of the acquired electronic device and used to determine whether the power consumption is too high. . Among them, the parameter value that can map the level of power consumption is not limited in the embodiment of this application. Specifically, when the parameter value is too high, the power consumption of the electronic device is usually too high, such as GPU load rate, CPU load rate The load rate of the GPU represents the number of tasks processed by the current GPU. The higher the load rate of the GPU, the more tasks the GPU handles. The embodiment of the present application takes the GPU load rate mapping the power consumption of the electronic device as an example for specific description.

In other words, acquiring the current power consumption of the electronic device may be acquiring a parameter value that characterizes the power consumption of the electronic device.

In the embodiment of the present application, obtaining the parameter value that characterizes the power consumption may be obtaining the current GPU load rate of the electronic device, and characterize the current overall power consumption of the electronic device according to the GPU load rate. Among them, the main modules that affect the power consumption of electronic devices are GPU/CPU and screens. Generally, when the GPU performs image processing, close cooperation of the CPU is required for data preparation and other tasks, which will generate large power consumption, the screen will light up for content display, and will also generate large power consumption. Therefore, when the GPU load rate is high, it can be considered that the current electronic device is displaying more complex content. For example, when the electronic device is playing a battle game, it needs to refresh and display the game interface at a higher frame rate. The entire electronic device Will produce larger power consumption. Therefore, the power consumption of the entire electronic device can be characterized by the GPU load rate of the electronic device. If the GPU load rate of the current electronic device is high, it can indicate that the power consumption of the electronic device is high. The low rate indicates that the power consumption of the electronic device is low.

Specifically, a preset load rate can be set in advance. This preset load rate can be a critical value that affects the processing speed of the GPU, that is, when the load rate of the GPU is less than the critical value, it indicates the layer data processed by the GPU If the current power consumption of the electronic device is relatively low, it is determined that the current power consumption is less than or equal to the preset threshold. If the GPU load rate is greater than the preset load rate, it indicates that the current GPU processes more layer data and generates higher power consumption, and it can be determined that the current power consumption is higher than the preset threshold.

Wherein, the method for the electronic device to obtain the current GPU load rate is not limited in the embodiments of the present application. For example, it may be obtained by accessing the GPU performance file to obtain the GPU parameters from the performance file, where the parameters include The current GPU load rate is calculated, so that the electronic device can obtain the current GPU load rate.

In step S430, if yes, use a multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the multiple layers; if not, use a graphics processor (GPU, Graphics Processing Unit) to synthesize and display the multiple layers. The layers are combined and displayed.

When the GPU load rate of the electronic device is greater than the preset load rate, it can be considered that the current power consumption of the electronic device is greater than the preset threshold, indicating that the current power consumption of the electronic device is high, and a synthesis method with lower power consumption can be used to obtain the Multiple layers to be combined. Then, when the GPU load rate of the electronic device is greater than the preset load rate, the MDP may be used to synthesize and display the multiple layers to balance the power consumption of the electronic device.

If the GPU load rate of the electronic device is less than or equal to the preset load rate, it can be considered that the current power consumption of the electronic device is less than or equal to the preset threshold, indicating that the current power consumption of the electronic device is low, and the layer composition speed can be faster The composite method of compositing multiple layers. Then, when the GPU load rate of the electronic device is less than or equal to the preset load rate, the multiple layers are synthesized and displayed using the GPU synthesis method to improve the layer synthesis ability.

In addition, when the synthesis method is selected according to the relationship between the load rate of the GPU and the preset load rate, it is possible that the GPU load rate of the electronic device fluctuates up and down the preset load rate, resulting in constant switching of the synthesis mode. More power consumption will be generated by switching the synthesis method back and forth. For example, when the GPU load rate is less than the preset load rate, the GPU synthesis method is selected to synthesize the image. At this time, the GPU load rate of the electronic device may be greater than the preset load rate, and the electronic device will switch the synthesis method to In the MDP synthesis mode, after switching to the MDP synthesis mode, the load rate of the GPU is less than the preset load rate, and the electronic device will switch the synthesis mode to the GPU synthesis mode again, thereby switching the synthesis mode back and forth to generate greater power consumption.

Therefore, optionally, a preset frequency can also be set in advance, where the preset frequency can be defined as the number of switching of the layer synthesis mode within the preset time as the preset number, or the GPU load rate at the preset time The number of fluctuations of the inherent preset load rate is the preset number of times, where the change from the preset load rate to the preset load rate is one fluctuation, and the switch from the preset load rate to the preset load rate is one fluctuation. If the fluctuation frequency of the GPU's load rate is greater than the preset frequency, it can be determined that the current power consumption is higher than the preset threshold, and then the layer is synthesized with a lower power consumption synthesis method, that is, the MDP synthesis method is selected for The layers are synthesized and maintained for a certain period of time. The specific sustaining period is not limited in the embodiment of the present application. For example, a multimedia display processor may be used to synthesize multiple layers of the image to be displayed within a preset time. The fluctuation frequency of the load rate of the GPU is the number of times the load rate of the GPU fluctuates within the preset load rate within a preset time. That is, it can be determined whether the fluctuation frequency of the GPU load rate is greater than the preset frequency, if so, it is determined that the current power consumption is higher than the preset threshold; if not, it is determined that the current power consumption is not higher than the preset threshold. Optionally, the preset frequency corresponding to the load rate of the GPU and the preset frequency corresponding to the fluctuation frequency of the change value of the remaining power may be different or the same, which is not limited in the embodiment of the present application.

For example, the preset time is 2 minutes, the preset load rate is 70%, and the preset frequency is 2. If the load rate of the GPU of the electronic device fluctuates around 70%, the GPU load rate obtained within two minutes is in order 68%, 72%, 69%, 71%, 66%, 71%, it can be seen that the frequency of GPU load rate fluctuation is 5, that is, the number of times the layer synthesis mode is switched is greater than the preset frequency, indicating that the current power consumption is higher than If the threshold is preset, MDP can be used to synthesize the layers. When the GPU load rate is greater than 70% of the preset load rate, the layer is synthesized by MDP synthesis method, and when the GPU load rate is less than or equal to the preset load rate of 70%, the layer is synthesized by GPU synthesis method If the load rate of the GPU fluctuates at the preset load rate at this time, the synthesis mode will be switched continuously. Switching the synthesis mode at a high frequency within a certain period of time will also bring additional power consumption, so that the current power can be determined If the consumption is higher than the preset threshold, you can choose the MDP synthesis method to synthesize the layers and maintain them for a certain period of time to reduce the power consumption of the electronic device. The maintenance for a certain period of time can be to use MDP to synthesize the layers within 10 minutes , The specific length of maintaining a certain time can be set according to actual needs, which is not limited here.

The image synthesis method proposed in this application determines whether the GPU load rate of the electronic device is greater than the preset load rate by acquiring the current power consumption of the electronic device and the multiple layers of the image to be displayed. The multiple layers are synthesized and displayed; if not, the multiple layers are synthesized and displayed using the GPU. The power consumption of the electronic device is determined by the GPU load rate of the electronic device. When the power consumption of the electronic device is high, the synthesis method with lower power consumption is selected to balance the power consumption of the electronic device. When the power consumption of the electronic device is low, Choose a synthesis method with strong layer synthesis ability to improve image processing performance, so as to balance and balance the layer synthesis ability of the electronic device and the low power consumption of the electronic device.

Please refer to FIG. 8, which shows an image synthesis device 500 provided by an embodiment of the present application. The device 500 includes an acquisition module 510, a judgment module 520, and a synthesis module 530.

The obtaining module 510 is used to obtain the current power consumption of the electronic device and the multiple layers of the image to be displayed; the judgment module 520 is used to judge whether the current power consumption is higher than a preset threshold; the synthesis module 530 is used to, if so, Then use a multimedia display processor (MDP, Multimedia Display Processor) to synthesize and display the multiple layers, if not, use a graphics processor (GPU, Graphics Processing Unit) to synthesize and display the multiple layers display.

Further, the obtaining module 510 is also used to obtain the current screen resolution of the electronic device; after obtaining the current power consumption of the electronic device and multiple layers of the image to be displayed, it is also used to obtain the current screen resolution according to the screen resolution. The resolution adjustment is performed on each of the multiple layers respectively.

Further, the acquiring module 510 is further configured to keep the resolution of the layer whose resolution is adapted to the screen resolution unchanged, and adjust the resolution of the layer whose resolution does not match the screen resolution. To adapt to the screen resolution.

Further, the determining module 520 is also used to determine whether the change value of the remaining power of the electronic device within a preset time period is greater than a preset change threshold, and if it is greater than, determine that the current power consumption is higher than the preset threshold.

Further, the judgment module 520 is also configured to obtain the remaining power of the electronic device at intervals of a preset time; for the remaining power acquired each time, if the difference between the remaining power acquired at the last preset time is greater than According to the preset change threshold, it is determined that the current power consumption is higher than the preset threshold.

Further, the determining module 520 is also used to determine whether the current GPU load rate of the electronic device is greater than a preset load rate; if it is greater, then determine that the current power consumption is higher than a preset threshold.

Further, the composition module 530 is further configured to obtain windows corresponding to the multiple layers on the display interface, and display the multiple layers on the display interface of the electronic device according to the corresponding windows.

It should be noted that those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above described device and module can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In summary, the image synthesis method provided in this application obtains the current power consumption of the electronic device and multiple layers of the image to be displayed; determines whether the current power consumption is higher than a preset threshold; if so, uses multimedia display A processor (MDP, Multimedia Display Processor) synthesizes and displays the multiple layers, and if not, uses a graphics processor (GPU, Graphics Processing Unit) to synthesize and display the multiple layers. Choose different layer synthesis methods according to the current power consumption of the electronic device. In the case of high power consumption of the electronic device, select the synthesis method with low energy consumption to balance the power consumption of the electronic device. In this case, select a synthesis method with higher synthesis capability to improve image processing performance.

In the several embodiments provided in this application, the coupling or direct coupling or communication connection between the displayed or discussed modules may be through some interfaces. The indirect coupling or communication connection of the devices or modules may be electrical, Mechanical or other forms.

In addition, each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist alone physically, or two or more modules may be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.

Please refer to FIG. 9, which shows a structural block diagram of an electronic device provided by an embodiment of the present application. The electronic device 600 may be an electronic device capable of running application programs, such as a smart phone, a tablet computer, or an e-book. The electronic device 600 in this application may include one or more of the following components: a processor 610, a memory 620, and one or more application programs, where one or more application programs may be stored in the memory 620 and configured to be configured by One or more processors 610 execute, and one or more programs are configured to execute the methods described in the foregoing method embodiments.

The processor 610 may include one or more processing cores. The processor 610 uses various interfaces and lines to connect various parts of the entire electronic device 600, and executes by running or executing instructions, programs, code sets, or instruction sets stored in the memory 620, and calling data stored in the memory 620. Various functions and processing data of the electronic device 600. Optionally, the processor 610 may use at least one of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). A kind of hardware form to realize. The processor 610 may be integrated with one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), a modem, and the like. Among them, the CPU mainly processes the operating system, user interface, and application programs; the GPU is used for rendering and drawing of display content; the modem is used for processing wireless communication. It is understandable that the above-mentioned modem may not be integrated into the processor 610, but may be implemented by a communication chip alone.

The memory 620 may include random access memory (RAM) or read-only memory (Read-Only Memory). The memory 620 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 620 may include a program storage area and a data storage area, where the program storage area may store instructions for implementing the operating system and instructions for implementing at least one function (such as touch function, sound playback function, image playback function, etc.) , Instructions for implementing the following method embodiments, etc. The storage data area can also store data created by the electronic device 600 during use (such as phone book, audio and video data, chat record data) and the like.

Please refer to FIG. 10, which shows a structural block diagram of a computer-readable storage medium provided by an embodiment of the present application. The computer-readable storage medium 700 stores program codes, and the program codes can be invoked by a processor to execute the methods described in the foregoing method embodiments.

The computer-readable storage medium 700 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read Only Memory), EPROM, hard disk, or ROM. Optionally, the computer-readable storage medium 700 includes a non-transitory computer-readable storage medium. The computer-readable storage medium 700 has a storage space for the program code 710 for executing any method steps in the above methods. These program codes can be read out from or written into one or more computer program products. The program code 710 may be compressed in a suitable form, for example.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not drive the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

An image synthesis method, characterized in that the method includes:

Obtain the current power consumption of the electronic device and multiple layers of the image to be displayed;

Judging whether the current power consumption is higher than a preset threshold;

If yes, use the multimedia display processor to synthesize and display the multiple layers,

If not, the graphics processor is used to synthesize and display the multiple layers.
The method of claim 1, wherein the method further comprises:

Obtain the current screen resolution of the electronic device;

After obtaining the current power consumption of the electronic device and the multiple layers of the image to be displayed, the method further includes:

The resolution adjustment is performed on each of the multiple layers according to the screen resolution.
The method of claim 2, wherein the adjusting the resolution of each of the multiple layers according to the screen resolution comprises:

Keep the resolution of the layer whose resolution matches the screen resolution unchanged,

The resolution of the layer whose resolution does not match the screen resolution is adjusted to match the screen resolution.
The method according to claim 2 or 3, wherein before the adjusting the resolution of each of the multiple layers according to the screen resolution, the method further comprises:

Determining whether the resolution of any of the multiple layers does not match the screen resolution;

If yes, performing the resolution adjustment of each of the multiple layers according to the screen resolution.
The method according to claim 4, wherein determining whether the resolution of a layer among the multiple layers of the image to be displayed does not match the screen resolution, comprising:

Determine in turn whether the resolution of each layer matches the screen resolution;

If it is determined that the resolution of a layer does not match the resolution of the screen, it is determined that the resolution of a layer of multiple layers does not match the screen resolution.
The method according to claim 5, wherein sequentially determining whether the resolution of each layer matches the screen resolution comprises:

Determine whether the resolution of the picture in each layer matches the screen resolution;

If the resolution of the image in the layer does not match the screen resolution, determine that the resolution of the layer does not match the screen resolution.
The method according to claim 6, wherein the adjusting the resolution of each of the multiple layers according to the screen resolution comprises:

The resolution of the picture whose resolution does not match the screen resolution is adjusted to match the screen resolution.
The method according to any one of claims 1 to 7, wherein obtaining the current power consumption of the electronic device comprises:

Obtain parameter values that characterize power consumption.
The method according to any one of claims 8, wherein the determining whether the current power consumption is higher than a preset threshold value comprises:

It is determined whether the acquired parameter value is higher than a preset threshold corresponding to the parameter value.
The method according to any one of claims 1 to 9, wherein the judging whether the current power consumption is higher than a preset threshold comprises:

Determining whether the change value of the remaining power of the electronic device within the preset time period is greater than the preset change threshold;

If it is greater than, it is determined that the current power consumption is higher than the preset threshold.
The method according to claim 10, wherein the determining whether the change value of the remaining power of the electronic device within a preset time period is greater than a preset change threshold comprises:

Obtain the remaining power of the electronic device at intervals of a preset time;

For the remaining power obtained each time, if the difference between the remaining power obtained at the last preset time is greater than the preset change threshold, it is determined that the change value of the remaining power is greater than the preset change threshold.
The method according to claim 11, wherein said determining whether the current power consumption is higher than a preset threshold value further comprises:

Determine whether the fluctuation frequency of the change value of the remaining power is greater than the preset frequency;

If yes, it is determined that the current power consumption is higher than the preset threshold.
The method according to claim 12, wherein if the fluctuation frequency of the change value of the remaining power is greater than the preset frequency, the multimedia display processor is used to synthesize the multiple layers within the preset time.
The method according to any one of claims 1-9, wherein the judging whether the current power consumption is higher than a preset threshold comprises:

Determine whether the current graphics processor load rate of the electronic device is greater than a preset load rate;

If it is greater than, it is determined that the current power consumption is higher than the preset threshold.
The method according to claim 14, wherein the determining whether the current power consumption is higher than a preset threshold value further comprises:

Determine whether the fluctuation frequency of the GPU load rate is greater than the preset frequency; if so, determine that the current power consumption is higher than the preset threshold.
15. The method according to claim 15, wherein if the fluctuation frequency of the GPU load rate is greater than the preset frequency, the multimedia display processor is used to synthesize the multiple layers within the preset time.
The method according to any one of claims 1-16, wherein synthesizing and displaying the multiple layers comprises:

Acquiring corresponding windows of the multiple layers on the display interface;

The multiple layers are displayed on the display interface of the electronic device according to the corresponding windows.
An image synthesis device, characterized in that the device includes:

The obtaining module is used to obtain the current power consumption of the electronic device and multiple layers of the image to be displayed;

A judging module for judging whether the current power consumption is higher than a preset threshold;

The synthesis module is used for synthesizing and displaying the multiple layers using the multimedia display processor, if so,

If not, the graphics processor is used to synthesize and display the multiple layers.
An electronic device, characterized in that, the electronic device includes:

One or more processors;

A memory, electrically connected to the one or more processors;

One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the one or more processors, and the one or more application programs are configured to execute The method of any one of claims 1-17.
A computer readable storage medium, wherein the computer readable storage medium stores program code, and the program code can be called by a processor to execute the method according to any one of claims 1 to 7 .