CN113238726A - Method, device and equipment for controlling synchronous display of double displays and storage medium - Google Patents
Method, device and equipment for controlling synchronous display of double displays and storage medium Download PDFInfo
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- CN113238726A CN113238726A CN202110483099.5A CN202110483099A CN113238726A CN 113238726 A CN113238726 A CN 113238726A CN 202110483099 A CN202110483099 A CN 202110483099A CN 113238726 A CN113238726 A CN 113238726A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 38
- 239000000872 buffer Substances 0.000 claims abstract description 57
- 230000009977 dual effect Effects 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004891 communication Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/544—Buffers; Shared memory; Pipes
Abstract
The invention discloses a method, a device, equipment and a storage medium for controlling synchronous display of double displays. The method comprises the steps of obtaining the current physical resolution of first display equipment; controlling the second display device to apply for a buffer memory in the surface F I nger; controlling the size of the buffer memory of the second display device to be consistent with that of the buffer memory of the first display device; when the Wi windows manager sets the window size to the surface F i nger, the first display device and the second display device are limited not to be subjected to zooming setting; when the HWC layer is mixed with the hardware layer, limiting a user to carry out scaling setting on the first display device and the second display device; acquiring the data output resolution of the current display data; and in the kernel l layer, outputting the data output resolution of the current display data to the first display equipment and the second display equipment for display. The synchronous display control method of the double displays can avoid stretching or zooming of the auxiliary screen on the basis of the point-to-point condition of the main screen in the double displays, and improves the display effect of the double displays.
Description
Technical Field
The invention relates to the technical field of display control, in particular to a method, a device, equipment and a storage medium for controlling synchronous display of double displays.
Background
The cloud terminal (VDI) has a high demand for display. When the dual-display is used, under the condition that the main screen is point-to-point, if the resolution ratios of the main screen and the auxiliary screen are not consistent, undesirable conditions such as stretching or zooming can occur on the auxiliary screen, and therefore the display experience of the auxiliary screen is reduced. Therefore, it is an urgent need to solve the problem of the present invention to provide a dual display synchronous display control.
Disclosure of Invention
In view of the above drawbacks, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for controlling synchronous display of dual displays, so as to solve the problems in the prior art.
In a first aspect, an embodiment of the present invention provides a method for controlling synchronous display of dual displays, where the method includes:
acquiring the current physical resolution of the first display device;
controlling the second display device to apply for a buffer memory in the surfaceFlinger;
controlling the size of the buffer memory of the second display device to be consistent with that of the buffer memory of the first display device;
when the Windows manager sets the window size to the SurfaceFlinger, the first display equipment and the second display equipment are limited not to be subjected to scaling setting;
when the HWC layer is mixed with the hardware layer, limiting a user to carry out scaling setting on the first display device and the second display device;
acquiring the data output resolution of the current display data;
and in the kernel layer, outputting the data output resolution ratio of the current display data to the first display equipment and the second display equipment for display.
Preferably, the current physical resolution of the first display device is the maximum physical resolution of the first display device.
Preferably, the controlling that the size of the buffer memory of the second display device is consistent with the size of the buffer memory of the first display device includes:
respectively acquiring the maximum physical resolutions of the first display device and the second display device;
controlling the first display device to apply for a buffer memory;
controlling a buffer memory of the first display device to be less than or equal to the maximum physical resolution of the first display device;
and controlling the buffer memory of the second display device to be less than or equal to the maximum physical resolution of the first display device.
Preferably, the first display device is a main display device, and the second display device is a sub display device.
Preferably, in the kernel layer, outputting to the first display device and the second display device for display according to the data output resolution of the current display data includes:
comparing the data output resolution to a current physical resolution of the first display device;
if the data output resolution is smaller than the current physical resolution of the first display device, the data output resolution is normal;
confirming the output physical resolution of the first display device according to the data output resolution;
and performing partial display control on the first display equipment and the second display equipment according to the data output resolution by setting the register parameter of the VOP.
In a second aspect, an embodiment of the present invention provides a dual-display synchronous display control apparatus, where the apparatus includes:
the first confirming module is used for acquiring the current physical resolution of the first display device;
the buffer application module is used for controlling the second display equipment to apply for the buffer memory in the surfaceFlinger;
the buffer memory control module is used for controlling the size of the buffer memory of the second display device to be consistent with the size of the buffer memory of the first display device;
the first limiting module is used for limiting the first display equipment and the second display equipment not to do zooming setting when the Windows manager sets the window size to the surfaceFlinger;
the second limiting module is used for limiting a user to perform scaling setting on the first display device and the second display device when the HWC layer is mixed with a hardware layer;
the data output resolution acquisition module is used for acquiring the data output resolution of the current display data;
and the display control module is used for outputting the resolution ratio to the first display equipment and the second display equipment for display according to the data output resolution ratio of the current display data in the kernel layer.
In a third aspect, an embodiment of the present invention provides a dual-display synchronous display control apparatus, including: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor, implement the method of the first aspect of the embodiments described above.
In a fourth aspect, embodiments of the present invention provide a storage medium having stored thereon computer program instructions, which when executed by a processor, implement the method of the first aspect in the above embodiments.
In summary, the embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for controlling synchronous display of dual displays. The method comprises the steps of obtaining the current physical resolution of first display equipment; controlling the second display device to apply for a buffer memory in the surfaceFlinger; controlling the size of the buffer memory of the second display device to be consistent with that of the buffer memory of the first display device; when the Windows manager sets the window size to the SurfaceFlinger, the first display equipment and the second display equipment are limited not to be subjected to scaling setting; when the HWC layer is mixed with the hardware layer, limiting a user to carry out scaling setting on the first display device and the second display device; acquiring the data output resolution of the current display data; and in the kernel layer, outputting the data output resolution ratio of the current display data to the first display equipment and the second display equipment for display. Therefore, the double-display synchronous display control method can avoid stretching or zooming of the auxiliary screen and improve the display effect of the double displays under the condition that the main screen in the double displays is point-to-point.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a dual-display synchronous display control method according to an embodiment of the present invention.
Fig. 2 is a flowchart of the method for controlling synchronous display of dual displays according to the embodiment of the present invention, where the size of the buffer memory for controlling the second display device is consistent with the size of the buffer memory for controlling the first display device.
Fig. 3 is a flowchart of outputting the data output resolution of the current display data to the first display device and the second display device for display in the kernel layer according to the method for controlling synchronous display of dual displays according to the embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating an operation principle of a dual-display synchronous display control method according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a dual-display synchronous display control device according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a dual-display synchronous display control device according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is 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 apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Referring to fig. 1, an embodiment of the present invention provides a dual-display synchronous display control method, which can prevent a secondary screen from stretching or zooming based on a point-to-point condition of a primary screen in a dual display, so as to improve a display effect of the dual display. The method comprises the following steps:
s1, acquiring the current physical resolution of the first display device;
s2, controlling the second display device to apply for the buffer memory in the surfaceFlinger;
specifically, in this embodiment, the surface flunger is a part of Android multimedia, and provides a system-wide surface component function as a service in Android implementation, and is capable of combining 2D and 3D surfaces of various applications, receiving data buffers from multiple sources, synthesizing the data buffers, and then sending the data buffers to the display device.
S3, controlling the size of the buffer memory of the second display device to be consistent with the size of the buffer memory of the first display device;
s4, when the Windows manager sets the window size to the SurfaceFlinger, the first display device and the second display device are limited not to be subjected to zooming setting;
s5, limiting a user to perform scaling setting on the first display device and the second display device when the HWC layer is mixed with a hardware layer;
s6, acquiring the data output resolution of the current display data;
and S7, outputting the data output resolution of the current display data to the first display equipment and the second display equipment in the kernel layer for display.
Preferably, the current physical resolution of the first display device is the maximum physical resolution of the first display device.
Preferably, referring to fig. 2, the controlling the size of the buffer memory of the second display device to be consistent with the size of the buffer memory of the first display device includes:
s31, respectively acquiring the maximum physical resolutions of the first display device and the second display device;
s32, controlling the first display device to apply for buffer memory;
s33, controlling the buffer memory of the first display device to be less than or equal to the maximum physical resolution of the first display device;
and S34, controlling the buffer memory of the second display device to be less than or equal to the maximum physical resolution of the first display device.
Preferably, the first display device is a main display device, and the second display device is a sub display device.
Preferably, referring to fig. 3, in the kernel layer, outputting the data output resolution of the current display data to the first display device and the second display device for displaying includes:
s71, comparing the data output resolution with the current physical resolution of the first display device;
s72, if the data output resolution is smaller than the current physical resolution of the first display device, the data output resolution is normal;
s73, confirming the output physical resolution of the first display device according to the data output resolution;
and S74, performing partial display control on the first display device and the second display device according to the data output resolution by setting the register parameter of the VOP.
Specifically, in a preferred embodiment, referring to fig. 4, when an application applies for a buffer to a window manager windowmanager, the buffer memory size of the second display device is controlled to be consistent with the buffer memory size of the first display device; limiting the maximum physical resolution to 2560x1600 when the display device in the surface Flinger applies for buffer; controlling the WindowManger to set the window size to SurfaceFlinger without any scaling setting, and inquiring the resolution of the first display device, namely the main screen to set, such as 1920x 1080; the HWC layer does not do any scaling when doing hardware layer mixing; and then, partial display output control is performed through the offset parameters in kernel layer VOP driving.
Referring to fig. 5, an embodiment of the invention provides a dual-display synchronous display control apparatus, including:
the first confirming module 1 is used for acquiring the current physical resolution of the first display device;
the buffer application module 2 is used for controlling the second display device to apply for the buffer memory in the surfaceFlinger;
the buffer memory control module 3 is configured to control the size of the buffer memory of the second display device to be consistent with the size of the buffer memory of the first display device;
a first limiting module 4, configured to limit the first display device and the second display device not to perform zoom setting when the Windows manager sets the window size for the surface flicker;
the second limiting module 5 is configured to limit, when the HWC layer is mixed with a hardware layer, a user to perform zoom setting on the first display device and the second display device;
a data output resolution obtaining module 6, configured to obtain a data output resolution of the current display data;
and the display control module 7 is used for outputting the resolution to the first display device and the second display device for display according to the data output resolution of the current display data in the kernel layer.
In addition, the dual-display synchronous display control method according to the embodiment of the present invention described in conjunction with fig. 1 may be implemented by a dual-display synchronous display control device. Fig. 6 is a schematic diagram illustrating a hardware structure of a dual-display synchronous display control device according to an embodiment of the present invention.
The dual display synchronous display control device may comprise a processor 401 and a memory 402 storing computer program instructions.
Specifically, the processor 401 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.
The processor 401 reads and executes the computer program instructions stored in the memory 402 to implement any one of the dual display synchronous display control methods in the above-described embodiments.
In one example, the dual display synchronous display control device may further include a communication interface 403 and a bus 410. As shown in fig. 6, the processor 401, the memory 402, and the communication interface 403 are connected via a bus 410 to complete communication therebetween.
The communication interface 403 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
The bus 410 includes hardware, software, or both that couple the components of the dual display synchronous display control device to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 410 may include one or more buses, where appropriate. Although specific buses have been described and shown in the embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
In addition, in combination with the dual-display synchronous display control method in the foregoing embodiment, an embodiment of the present invention may provide a computer-readable storage medium to implement the method. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any one of the dual display synchronous display control methods in the above embodiments.
In summary, the embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for controlling synchronous display of dual displays. The method comprises the steps of obtaining the current physical resolution of first display equipment; controlling the second display device to apply for a buffer memory in the surfaceFlinger; controlling the size of the buffer memory of the second display device to be consistent with that of the buffer memory of the first display device; when the Windows manager sets the window size to the SurfaceFlinger, the first display equipment and the second display equipment are limited not to be subjected to scaling setting; when the HWC layer is mixed with the hardware layer, limiting a user to carry out scaling setting on the first display device and the second display device; acquiring the data output resolution of the current display data; and in the kernel layer, outputting the data output resolution ratio of the current display data to the first display equipment and the second display equipment for display. Therefore, the double-display synchronous display control method can avoid stretching or zooming of the auxiliary screen and improve the display effect of the double displays under the condition that the main screen in the double displays is point-to-point.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (8)
1. A synchronous display control method for dual displays is characterized by comprising the following steps:
acquiring the current physical resolution of the first display device;
controlling the second display device to apply for a buffer memory in the surfaceFlinger;
controlling the size of the buffer memory of the second display device to be consistent with that of the buffer memory of the first display device;
when the Windows manager sets the window size to the SurfaceFlinger, the first display equipment and the second display equipment are limited not to be subjected to scaling setting;
when the HWC layer is mixed with the hardware layer, limiting a user to carry out scaling setting on the first display device and the second display device;
acquiring the data output resolution of the current display data;
and in the kernel layer, outputting the data output resolution ratio of the current display data to the first display equipment and the second display equipment for display.
2. The dual-display synchronous display control method according to claim 1, wherein the current physical resolution of the first display device is a maximum physical resolution of the first display device.
3. The dual-display synchronous display control method according to claim 2, wherein the controlling that the buffer memory size of the second display device is consistent with the buffer memory size of the first display device comprises:
respectively acquiring the maximum physical resolutions of the first display device and the second display device;
controlling the first display device to apply for a buffer memory;
controlling a buffer memory of the first display device to be less than or equal to the maximum physical resolution of the first display device;
and controlling the buffer memory of the second display device to be less than or equal to the maximum physical resolution of the first display device.
4. The dual-display synchronous display control method according to claim 1, wherein the first display device is a main display device, and the second display device is a sub-display device.
5. The dual-display synchronous display control method according to claim 1, wherein outputting to the first display device and the second display device for display according to a data output resolution of the current display data in a kernel layer comprises:
comparing the data output resolution to a current physical resolution of the first display device;
if the data output resolution is smaller than the current physical resolution of the first display device, the data output resolution is normal;
confirming the output physical resolution of the first display device according to the data output resolution;
and performing partial display control on the first display equipment and the second display equipment according to the data output resolution by setting the register parameter of the VOP.
6. A dual-display synchronous display control apparatus, comprising:
the first confirming module is used for acquiring the current physical resolution of the first display device;
the buffer application module is used for controlling the second display equipment to apply for the buffer memory in the surfaceFlinger;
the buffer memory control module is used for controlling the size of the buffer memory of the second display device to be consistent with the size of the buffer memory of the first display device;
the first limiting module is used for limiting the first display equipment and the second display equipment not to do zooming setting when the Windows manager sets the window size to the surfaceFlinger;
the second limiting module is used for limiting a user to perform scaling setting on the first display device and the second display device when the HWC layer is mixed with a hardware layer;
the data output resolution acquisition module is used for acquiring the data output resolution of the current display data;
and the display control module is used for outputting the resolution ratio to the first display equipment and the second display equipment for display according to the data output resolution ratio of the current display data in the kernel layer.
7. A dual-display synchronous display control apparatus, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-5.
8. A storage medium having computer program instructions stored thereon, which when executed by a processor implement the method of any one of claims 1-5.
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| CN202110483099.5A CN113238726A (en) | 2021-04-30 | 2021-04-30 | Method, device and equipment for controlling synchronous display of double displays and storage medium |
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