WO2021228032A1

WO2021228032A1 - Method and apparatus for transmitting desktop image data of virtual machine, and electronic device

Info

Publication number: WO2021228032A1
Application number: PCT/CN2021/092709
Authority: WO
Inventors: 张衡
Original assignee: 北京金山云网络技术有限公司
Priority date: 2020-05-14
Filing date: 2021-05-10
Publication date: 2021-11-18
Also published as: CN113672318A

Abstract

The present application provides a method and apparatus for transmitting desktop image data of a virtual machine, and an electronic device. The method comprises: capturing, in a virtual machine according to a preset time interval, the desktop image data of the virtual machine that is rendered by a preset virtual graphics card, and storing the desktop image data in a preset data buffer area in a PCI device; if a connection request sent by a client is monitored, obtaining the desktop image data stored in the data buffer area; and sending the desktop image data to the client, so that the client displays the desktop image data. The PCI device, as a data source of a desktop image data transmission service, realizes the obtaining of high-resolution desktop image data by means of a capturing operation. Therefore, the image data rendered by a high-performance virtual graphics card can be stored by means of the capturing operation and the PCI device and transmitted to the client, so as to implement the transmission of the high-resolution desktop image data with the client, thereby improving the display effect of the client, and also improving the user experience.

Description

Method and device for transmitting desktop image data of virtual machine and electronic equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with the application number 202010410975.7 and the invention titled "Virtual Machine Desktop Image Data Transmission Method and Apparatus and Electronic Equipment" on May 14, 2020. The entire content of the application is approved The reference is incorporated in this application.

Technical field

This application relates to the technical field of cloud servers, in particular to a method and device for transmitting desktop image data of a virtual machine and electronic equipment.

Background technique

At present, with the rapid development of cloud computing technology, desktop cloud has been widely used as a new type of computing environment. By installing a desktop operating system in a virtual machine, and then connecting the virtual machine to the terminal, the desktop cloud can obtain a user experience close to that of a physical computer, providing a cost-effective desktop solution for enterprises and individual users.

The display effect of the virtual machine desktop is one of the main indicators of the desktop cloud solution. The use of graphics card virtualization technology can greatly improve the display performance of the virtual machine, so that the virtual machine has the ability to perform professional graphics calculation and rendering. The processing capacity of the terminal solution puts forward higher requirements. At present, there are mainly two graphics display devices in virtual machines that use high-performance virtual graphics cards. One is a basic VGA (Video Graphics Array) device, and the other is a VGA device with high-performance graphics cards. When users use a terminal to connect to the virtual machine , The content you see is provided by the graphics display device, but the current client transmission protocol scheme cannot obtain the images processed by the VGA device of the high-performance graphics card, so it only supports the transmission of lower resolution desktop images, and does not support graphics hardware acceleration. As a result, the transmission is slow, which affects the user experience.

Summary of the invention

In view of this, the purpose of the present application is to provide a method and device for transmitting desktop image data of a virtual machine and electronic equipment, which supports graphics card hardware acceleration, can realize the transmission of high-resolution desktop image data, thereby improving user experience.

In the first aspect, an embodiment of the present application provides a method for transmitting desktop image data of a virtual machine, in which a PCI device is registered, and the virtual machine communicates with a client through a preset transmission service, and the method includes: Grab the desktop image data of the virtual machine after rendering processing of the preset virtual graphics card in the virtual machine at a preset time interval; store the desktop image data in a preset data buffer in the PCI device Area; if the connection request sent by the client is monitored, obtain the desktop image data stored in the data buffer; send the desktop image data to the client, so that the client displays the Describe the desktop image data.

With reference to the first aspect, the embodiments of the present application provide the first possible implementation manner of the first aspect, wherein the method further includes: if the start signal of the virtual machine is monitored, loading the driver of the PCI device , To register the PCI device in the virtual machine; and to divide the memory area of the PCI device and map the memory area of the PCI device to the operating system of the virtual machine to provide the PCI The data buffer of the device.

With reference to the first possible implementation manner of the first aspect, an embodiment of the present application provides a second possible implementation manner of the first aspect, in which the memory area of the PCI device is mapped to the virtual machine After the steps in the operating system of, the method further includes: switching the data source of the transmission service in the virtual machine to the data buffer of the PCI device, so as to obtain the desktop from the data buffer Image data.

With reference to the first aspect, the embodiments of the present application provide a third possible implementation manner of the first aspect, in which the virtual machine that has been rendered by a preset virtual graphics card is captured at a preset time interval in the virtual machine. The steps of the desktop image data of the computer include: when it is monitored that the virtual machine starts to run automatically, the virtual The desktop image data of the computer.

With reference to the first aspect, the embodiments of the present application provide a fourth possible implementation manner of the first aspect, where the virtual machine is a KVM virtual machine.

With reference to the first aspect, the embodiments of the present application provide a fifth possible implementation manner of the first aspect, wherein the transmission service is a transmission service based on the SPICE protocol or the VNC protocol.

In the second aspect, an embodiment of the present application also provides a method for transmitting desktop image data of a virtual machine, which is applied to a client, and the client communicates with the virtual machine through a preset transmission service, and the method includes: The virtual machine sends a connection request; wherein a PCI device is registered in the virtual machine, and a preset data buffer in the PCI device stores desktop image data of the virtual machine that has been rendered by a preset virtual graphics card; Receiving the desktop image data sent by the virtual machine, and displaying the desktop image data through a graphical user interface.

With reference to the second aspect, the embodiments of the present application provide the first possible implementation manner of the second aspect, wherein the client is a client running SPICE software or VNC software.

In a third aspect, an embodiment of the present application also provides an apparatus for transmitting desktop image data of a virtual machine, in which a PCI device is registered, and the virtual machine communicates with a client through a preset transmission service, and the apparatus includes: The grabbing module is used to grab the desktop image data of the virtual machine that has been rendered by a preset virtual graphics card at a preset time interval in the virtual machine; the storage module is used to store the desktop image data To the data buffer preset in the PCI device; an obtaining module, configured to obtain the desktop image data stored in the data buffer if the connection request sent by the client is monitored; the first sending module, It is used to send the desktop image data to the client, so that the client displays the desktop image data.

In a fourth aspect, an embodiment of the present application also provides a device for transmitting desktop image data of a virtual machine, which is set in a client, and the client communicates with the virtual machine through a preset transmission service, and the device includes: a second transmission Module, configured to send a connection request to the virtual machine; wherein, a PCI device is registered in the virtual machine, and a preset data buffer in the PCI device stores the preset virtual graphics card rendering process Desktop image data of the virtual machine; a receiving module for receiving the desktop image data sent by the virtual machine, and displaying the desktop image data through a graphical user interface.

In a fifth aspect, an embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and running on the processor. When the processor executes the computer program, The steps of the method for transmitting the desktop image data of the virtual machine described in the first aspect and the second aspect are implemented.

In a sixth aspect, an embodiment of the present application also provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and the computer program executes the first and second aspects when the computer program is run by a processor. Of the method for transferring desktop image data of a virtual machine.

The embodiments of the application bring the following beneficial effects:

The embodiments of the present application provide a method and device for transmitting desktop image data of a virtual machine, and electronic equipment, which can capture the desktop image data of the virtual machine that has been rendered by a preset virtual graphics card at a preset time interval in the virtual machine. The desktop image data is stored in the data buffer preset in the PCI device; if the connection request sent by the client is monitored, the desktop image data stored in the data buffer is obtained; the desktop image data is sent to the client so that the client The desktop image data is displayed on the end; among them, the PCI device used to store the desktop image data after the preset virtual graphics card rendering process is pre-registered in the virtual machine, and the preset virtual graphics card rendering process can be realized through the grab operation. The high-resolution desktop image data of the virtual machine is acquired, and the captured desktop image data is stored in the preset data buffer in the PCI device, and the PCI device can be used as the data source of the desktop image data transmission service. Grab the desktop image data of the virtual machine rendered by the preset virtual graphics card and the PCI device realizes the storage of the image data rendered by the high-performance virtual graphics card, and transmits it to the client to realize high-resolution desktops with the client The transmission of image data not only improves the display effect of the client, but also improves the user experience.

Other features and advantages of the present application will be described in the following description, and partly become obvious from the description, or understood by implementing the present application. The purpose and other advantages of the application are realized and obtained in the structure specifically pointed out in the description and the drawings.

In order to make the above-mentioned objectives, features and advantages of the present application more obvious and understandable, the preferred embodiments and accompanying drawings are described in detail as follows.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application and related technologies, the following briefly introduces the drawings that need to be used in the embodiments and related technologies. Obviously, the drawings in the following description are only of the present application. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings.

FIG. 1 is a flowchart of a method for transmitting desktop image data of a virtual machine according to an embodiment of the application;

2 is a flowchart of another method for transmitting desktop image data of a virtual machine according to an embodiment of the application;

3 is a flowchart of another method for transmitting desktop image data of a virtual machine according to an embodiment of the application;

4 is a signaling diagram of a method for transmitting desktop image data of a virtual machine according to an embodiment of the application;

FIG. 5 is a schematic diagram of a method for transmitting desktop image data of a virtual machine according to an embodiment of the application;

6 is a schematic diagram of an apparatus for transmitting desktop image data of a virtual machine according to an embodiment of the application;

FIG. 7 is a schematic diagram of another device for transmitting desktop image data of a virtual machine provided by an embodiment of the application.

icon:

10-grabbing module; 20-storing module; 30-acquisition module; 40-first sending module; 50-second sending module; 60-receiving module.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the present application clearer, the following further describes the present application in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in this application fall within the protection scope of this application.

In the desktop cloud, the display effect of the virtual machine desktop is directly related to the user experience. The use of graphics virtualization technology can greatly improve the display performance of the virtual machine, so that the virtual machine has the ability to perform professional graphics calculation and rendering; The processing capacity of the virtual display terminal solution puts forward higher requirements.

Among them, in a virtual machine configured and using a high-performance virtual graphics card, there are mainly two graphics display devices, one is a basic VGA (Video Graphics Array, video graphics array) device, and the other is a VGA device with a high-performance graphics card. In practical applications, basic VGA devices can only perform basic 2D graphics rendering; VGA devices with high-performance graphics cards can not only perform 2D and 3D (3-Dimension) rendering, but also provide hardware acceleration, smooth fonts and window animations. And other special effects, greatly improving the user experience.

At this time, when the user uses the client display software to connect to the virtual machine, the content displayed by the client is provided by the above two VGA devices. According to the transmission protocol, terminal display solutions mainly include solutions based on the VNC (Virtual Network Computing) protocol, solutions based on the SPICE (Simple Protocol for Independent Computing Environment, Simple Protocol for Independent Computing Environment) protocol, and solutions based on the RDP (Remote Network Computing) protocol. Desktop Protocol (Remote Desktop Protocol) protocol solutions and private protocol solutions based on Citrix and VMware. Among them, solutions based on VNC protocol and solutions based on SPICE protocol only support basic VGA devices and do not support high-performance virtual graphics cards, that is, Since the driver corresponding to the basic VGA device is open source, the transmission service based on the VNC protocol and the SPICE protocol can obtain the processed image data from the basic VGA device. However, since the driver of the high-performance virtual graphics card is not open source, Transmission services based on the VNC protocol and the SPICE protocol cannot directly obtain the processed image data from the VGA device of the high-performance virtual graphics card, and the solution based on the VNC protocol can only support lower resolution desktop images; while the solution based on the RDP protocol It does not support graphics hardware acceleration, and can only be used on Windows virtual machines; and, the private protocol scheme based on Citrix and VMware is non-public, the price is high, and it is not convenient to implement and promote in practical applications.

In response to the foregoing problems, the embodiments of the present application provide a method and device for transmitting desktop image data of a virtual machine, and electronic equipment, which supports graphics card hardware acceleration, and can realize the transmission of high-resolution desktop image data, thereby improving user experience.

In order to facilitate the understanding of this embodiment, a method for transmitting desktop image data of a virtual machine provided in an embodiment of the present application will be introduced in detail below.

In a possible implementation manner, an embodiment of the present application provides a method for transmitting desktop image data of a virtual machine. FIG. 1 is a flowchart of a method for transmitting desktop image data of a virtual machine provided by an embodiment of this application. , The executive body is the server, where a virtual machine is set in the server; PCI (Peripheral Component Interconnect) devices are registered in the virtual machine, and the virtual machine communicates with the client through a preset transmission service, as shown in the figure As shown in 1, the method includes the following steps:

Step S102: Grab the desktop image data of the virtual machine that has been rendered by the preset virtual graphics card at a preset time interval in the virtual machine;

Step S104, storing the desktop image data in a data buffer preset in the PCI device;

Among them, the above-mentioned virtual machine is usually configured with a high-performance virtual graphics card. Generally, there are two graphics display devices in the virtual machine, that is, one is a basic VGA device and the other is a VGA device with a high-performance graphics card. The above-mentioned preset virtual graphics card usually refers to a high-performance virtual graphics card, and the desktop image data of the virtual machine after rendering processing of the high-performance virtual graphics card is saved to the preset data buffer in the above-mentioned PCI device.

Further, the above-mentioned desktop image capture process is usually implemented through a desktop image capture control. As a system service, the desktop image capture control can run automatically after the virtual machine is powered on. Therefore, when it is detected that the virtual machine runs automatically after it is powered on, The desktop image data of the virtual machine that has been rendered by the preset virtual graphics card can be captured at a preset time interval through a preset desktop image capture control.

Whether the driver of the high-performance virtual graphics card is open source does not affect the desktop image capture control to perform the capture operation. Therefore, the desktop image capture control can be used to capture the desktop image data of the virtual machine after the preset virtual graphics card rendering process. Pick.

The aforementioned preset time interval can be set according to factors such as the rendering speed of the desktop image data, the real-time requirements of the desktop image data display, and so on, which is not specifically limited here.

Step S106, if the connection request sent by the client is monitored, the desktop image data stored in the data buffer is obtained;

At this time, if the server detects the connection request sent by the client, it obtains the stored desktop image data from the preset data buffer in the PCI device, so that the server sends the desktop image data to the client through the preset transmission service.

Among them, if the server detects the connection request sent by the client, it will obtain the latest stored desktop image data from the data buffer preset in the PCI device, so that the desktop image data displayed by the client and the desktop image data of the virtual machine are as close as possible. Stay in sync.

Step S108: Send the desktop image data to the client, so that the client displays the desktop image data.

The embodiment of the present application provides a method for transmitting desktop image data of a virtual machine, which can capture the desktop image data of the virtual machine that has been rendered by a preset virtual graphics card at a preset time interval in the virtual machine, and combine the desktop image data Stored in the data buffer preset in the PCI device; if the connection request sent by the client is monitored, obtain the desktop image data stored in the data buffer; send the desktop image data to the client so that the client can display the desktop image data ; Among them, the PCI device used to store the desktop image data after the preset virtual graphics card rendering process is pre-registered in the virtual machine, and the high resolution of the virtual machine after the preset virtual graphics card rendering process can be realized through the grab operation Rate desktop image data acquisition, the captured desktop image data is stored in the preset data buffer in the PCI device, and the PCI device can be used as the data source of the desktop image data transmission service. Therefore, the captured desktop image data can be preset The desktop image data of the virtual machine after the virtual graphics card rendering process and the PCI device realizes the storage of the image data rendered by the high-performance virtual graphics card and transmits it to the client to realize the transmission of high-resolution desktop image data with the client. It not only improves the display effect of the client, but also improves the user experience.

In an implementation manner, the virtual machine in the embodiment of the present application usually includes a KVM (Kernel-based Virtual Machine, kernel-based virtual machine) virtual machine, which communicates with the client through a preset transmission service, where the transmission The service is a transmission service based on the SPICE protocol or the VNC protocol. Therefore, the desktop image data of the above-mentioned virtual machine using KVM technology, including its graphics desktop, is captured by the preset desktop image after the rendering processing of the high-performance virtual graphics card The control grabs it and stores it in the preset data buffer of the PCI device, which can then be displayed to the user through terminal software such as SPICE, thus solving the problem that the transmission service based on the SPICE protocol or the VNC protocol in related technologies cannot directly obtain high-performance virtual The problem of the image data processed by the graphics card rendering. The VGA device with high-performance virtual graphics card can not only perform 2D and 3D rendering, but also provides hardware acceleration, which can realize special effects such as smooth fonts and window animations, which greatly improves the user experience. When the user displays desktop image data through the client , The image that the user sees can be rendered through hardware acceleration, so the user experience is significantly improved.

Further, the above-mentioned PCI device is usually an image buffer device added to the virtual machine, and the display software of the client terminal obtains the desktop image data from the image buffer device, and finally presents it to the user. Therefore, the embodiment of the present application also includes the registration process of the PCI device. In some embodiments, specifically, on the basis of FIG. 1, the embodiment of the present application also provides another method for sending desktop image data of a virtual machine. As shown in Figure 2, the method includes the following steps:

Step S202, if the start signal of the virtual machine is detected, the driver of the PCI device is loaded to register the PCI device in the virtual machine;

Among them, when the start signal of the virtual machine is monitored, the server loads the driver of the PCI device to register the PCI device in the virtual machine. The main function of the PCI device is to provide a large enough device memory in the virtual machine as a data buffer Area, used to store the captured desktop image data.

Step S204: Divide the memory area of the PCI device, and map the memory area of the PCI device to the operating system of the virtual machine to provide a data buffer of the PCI device;

After registering the PCI device in the virtual machine, the memory area of the PCI device can also be divided for the PCI device as a data buffer to store the captured desktop image data. When the virtual machine is started, the newly added PCI device can be seen in the device information in the virtual machine; then the driver of the PCI device is loaded, at this time, the PCI device can be recognized by the operating system in the virtual machine, so that the PCI device normal work. Here, the main function of the driver is to map the memory area of the PCI device to the operating system of the virtual machine, so as to provide a corresponding access mechanism to provide the data buffer of the PCI device.

In addition, the size of the data buffer is related to the resolution of the desktop image data. The larger the resolution, the larger the data buffer. Therefore, in this embodiment of the application, the high-resolution desktop image can be realized through the data buffer of the PCI device. Data storage and transmission.

Step S206: Grab the desktop image data of the virtual machine that has been rendered by the preset virtual graphics card at a preset time interval in the virtual machine;

Step S208, storing the desktop image data in a data buffer preset in the PCI device;

Step S210: Switch the data source of the transmission service in the virtual machine to the data buffer of the PCI device;

Here, the virtual machine process will start the preset transmission service to monitor the port communicating with the client. At this time, the virtual machine will also switch the data source of the transmission service to the data buffer of the PCI device, which is the data source of the transmission service. Switch from the buffer of the basic VGA device to the data buffer of the PCI device, so as to obtain desktop image data from the data buffer of the PCI device.

Step S212, if the connection request sent by the client is monitored, the desktop image data stored in the data buffer is obtained;

Step S214: Send the desktop image data to the client, so that the client displays the desktop image data.

In summary, in the embodiments of the present application, the following processes are mainly included to achieve the purpose of transmitting the desktop image data of the virtual machine:

1) Add a PCI device to the virtual machine. As an image buffer device, the main function of this device is to provide a large enough device memory as a data buffer to store the captured desktop image data;

2) Run the desktop image capture control in the virtual machine, capture the desktop image data after the preset virtual graphics card rendering processing in real time, and store the desktop image data into the data buffer of the above PCI device through the device driver;

3) Modify the data source of the transmission service of the virtual machine, and modify the data source to the data buffer of the PCI device that has been added above.

On the basis of the foregoing embodiments, the embodiment of the present application also provides another method for transmitting desktop image data of a virtual machine, as shown in FIG. 3 is a flowchart of another method for transmitting desktop image data of a virtual machine. The execution body of the method is a client, and the client communicates with a virtual machine through a preset transmission service. As shown in FIG. 3, the method includes the following steps:

Step S302, sending a connection request to the virtual machine;

Among them, the above-mentioned virtual machine is registered with a PCI device, and the preset data buffer in the PCI device stores the desktop image data of the virtual machine after the preset virtual graphics card rendering processing; the client is running SPICE software or VNC software Client.

Step S304: Receive desktop image data sent by the virtual machine, and display the desktop image data through a graphical user interface.

The method for transmitting the desktop image data of the virtual machine provided by the embodiment of the present application includes: sending a connection request to the virtual machine at the client; wherein, the PCI device is registered in the virtual machine, and the data buffer in the PCI device is preset The desktop image data is stored; the desktop image data sent by the virtual machine is received, and the desktop image data is displayed through a graphical user interface. This application supports graphics card hardware acceleration, which can realize the transmission of high-resolution desktop image data, thereby improving user experience.

For ease of understanding, on the basis of the above-mentioned embodiment, FIG. 4 provides a signaling diagram of a method for transmitting desktop image data of a virtual machine, which is applied to a server and a client. Among them, the server is provided with a virtual machine. PCI devices are registered in the virtual machine, and the virtual machine communicates with the client through a preset transmission service. As shown in Figure 4, it includes the following steps:

Step S402: Grab the desktop image data of the virtual machine after rendering processing of the preset virtual graphics card in the virtual machine at a preset time interval, and store the desktop image data in a preset data buffer in the PCI device;

Step S404, the client sends a connection request to the virtual machine;

Step S406, the virtual machine obtains the desktop image data stored in the data buffer;

Step S408, the virtual machine sends the desktop image data to the client;

In step S410, the client terminal displays the desktop image data through a graphical user interface.

For ease of understanding, an example is given here. As shown in Figure 5, a virtual machine is set in the server, a PCI device is registered in the virtual machine, and the virtual machine communicates with the client through a preset transmission service. When the virtual machine is started, the preset desktop image capture control in the virtual machine captures the desktop image data of the virtual machine at a preset time interval, where the desktop image data is after image rendering by the graphics card, that is, the high-performance display VGA device The desktop data; and the desktop image data is stored in the data buffer preset in the PCI device. When the client sends a connection request to the virtual machine, the virtual machine obtains the desktop image data stored in the data buffer and stores the desktop image data Send to the client through the preset transmission service, so that the client can display the desktop image data; among them, the virtual machine also switches the data source of the transmission service from the standard VGA device to the data buffer of the PCI device to facilitate the transfer from the data buffer Obtain desktop image data, so as to realize the transmission of high-resolution desktop image data. Among them, the standard VGA device is the above-mentioned basic VGA device. In addition, the virtual machine here is a KVM virtual machine, which can continue to obtain related optimizations and improvements of KVM technology, and supports hardware acceleration, which can realize desktop features, run 3D drawing tools and games, etc., thereby satisfying various needs of users , Improve the customer experience.

On the basis of the above-mentioned embodiment, the embodiment of the present application also provides a device for transmitting desktop image data of a virtual machine, which is set in a server, wherein the server is provided with a virtual machine; the virtual machine is registered with PCI equipment, and the virtual machine Communicate with clients through preset transmission services. FIG. 6 is a schematic diagram of a device for transmitting desktop image data of a virtual machine provided by an embodiment of the application. As shown in FIG. 6, the device includes:

The grabbing module 10 is configured to grab the desktop image data of the virtual machine that has been rendered by the preset virtual graphics card at a preset time interval in the virtual machine;

The storage module 20 is configured to store desktop image data in a data buffer preset in the PCI device;

The obtaining module 30 is configured to obtain the desktop image data stored in the data buffer if the connection request sent by the client is monitored;

The first sending module 40 is configured to send desktop image data to the client, so that the client displays the desktop image data.

Further, the embodiment of the present application also provides another device for transmitting desktop image data of a virtual machine, which is set in a client, and the client communicates with the virtual machine through a preset transmission service. FIG. 7 is a schematic diagram of another device for transmitting desktop image data of a virtual machine provided by an embodiment of the application. As shown in FIG. 7, the device includes:

The second sending module 50 is configured to send a connection request to a virtual machine; wherein, a PCI device is registered in the virtual machine, and a preset data buffer in the PCI device stores the desktop of the virtual machine that has been rendered by a preset virtual graphics card Image data

The receiving module 60 is configured to receive desktop image data sent by the virtual machine, and display the desktop image data through a graphical user interface.

The device for transmitting the desktop image data of the virtual machine provided by the embodiment of the present application can capture the desktop image data of the virtual machine that has been rendered by the preset virtual graphics card at a preset time interval in the virtual machine, and combine the desktop image data Stored in the data buffer preset in the PCI device; if the connection request sent by the client is monitored, obtain the desktop image data stored in the data buffer; send the desktop image data to the client so that the client can display the desktop image data ; Among them, the PCI device used to store the desktop image data after the preset virtual graphics card rendering process is pre-registered in the virtual machine, and the high resolution of the virtual machine after the preset virtual graphics card rendering process can be realized through the grab operation Rate desktop image data acquisition, the captured desktop image data is stored in the preset data buffer in the PCI device, and the PCI device can be used as the data source of the desktop image data transmission service. Therefore, the captured desktop image data can be preset The desktop image data of the virtual machine after the virtual graphics card rendering process and the PCI device realizes the storage of the image data rendered by the high-performance virtual graphics card and transmits it to the client to realize the transmission of high-resolution desktop image data with the client. It not only improves the display effect of the client, but also improves the user experience.

An embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor. The processor executes the computer program to implement the desktop image data of the virtual machine provided in the above embodiment. The steps of the transmission method.

The embodiments of the present application also provide a computer-readable storage medium on which a computer program is stored. When the computer program is run by a processor, the steps of the method for transmitting the desktop image data of the virtual machine in the above-mentioned embodiment are executed.

The computer program product provided by the embodiment of the present application includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the method described in the previous method embodiment. For specific implementation, please refer to the method embodiment , I won’t repeat it here.

Industrial applicability:

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

In addition, in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection. , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in this application can be understood under specific circumstances.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a non-volatile computer readable storage medium executable by a processor. Based on this understanding, the technical solution of this application essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes. .

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be understood as a limitation of this application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

Finally, it should be noted that the above-mentioned embodiments are only specific implementations of this application, which are used to illustrate the technical solution of this application, rather than limit it. The scope of protection of this application is not limited to this, although referring to the foregoing The embodiments describe the application in detail, and those of ordinary skill in the art should understand that any person skilled in the art can still modify the technical solutions described in the foregoing embodiments within the technical scope disclosed in this application. Or it can be easily conceived of changes, or equivalent replacements of some of the technical features; and these modifications, changes or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should be covered in this application Within the scope of protection. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

The above are only preferred embodiments of this application, and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application. Within the range.

Claims

A method for transmitting desktop image data of a virtual machine, a PCI device is registered in the virtual machine, and the virtual machine communicates with a client through a preset transmission service, and the method includes:

Capturing, in the virtual machine, the desktop image data of the virtual machine that has been rendered by a preset virtual graphics card at a preset time interval;

Storing the desktop image data in a data buffer preset in the PCI device;

If the connection request sent by the client is monitored, acquiring the desktop image data stored in the data buffer;

The desktop image data is sent to the client, so that the client displays the desktop image data.
The method for transmitting desktop image data of a virtual machine according to claim 1, wherein the method further comprises:

If the start signal of the virtual machine is detected, load the driver of the PCI device to register the PCI device in the virtual machine; and,

The memory area of the PCI device is divided, and the memory area of the PCI device is mapped to the operating system of the virtual machine to provide a data buffer area of the PCI device.
The method for transmitting desktop image data of a virtual machine according to claim 2, wherein, after the step of mapping the memory area of the PCI device to the operating system of the virtual machine, the method further comprises:

The data source of the transmission service in the virtual machine is switched to the data buffer of the PCI device, so as to obtain the desktop image data from the data buffer.
The method for transmitting desktop image data of a virtual machine according to claim 1, wherein the virtual machine captures the desktop image data of the virtual machine after a preset virtual graphics card rendering process according to a preset time interval. The steps include:

When it is detected that the virtual machine starts to run automatically, the desktop image data of the virtual machine that has been rendered by the preset virtual graphics card is captured at a preset time interval through a preset desktop image capture control.
The method for transmitting desktop image data of a virtual machine according to any one of claims 1 to 4, wherein the virtual machine is a KVM virtual machine.
The method for transmitting desktop image data of a virtual machine according to any one of claims 1 to 4, wherein the transmission service is a transmission service based on the SPICE protocol or the VNC protocol.
A method for transmitting desktop image data of a virtual machine is applied to a client, and the client communicates with the virtual machine through a preset transmission service. The method includes:

Send a connection request to the virtual machine; wherein a PCI device is registered in the virtual machine, and a preset data buffer in the PCI device stores a desktop of the virtual machine that has been rendered by a preset virtual graphics card Image data

Receiving the desktop image data sent by the virtual machine, and displaying the desktop image data through a graphical user interface.
The method for transmitting desktop image data of a virtual machine according to claim 7, wherein the client is a client running SPICE software or VNC software.
A device for transmitting desktop image data of a virtual machine, a PCI device is registered in the virtual machine, and the virtual machine communicates with a client through a preset transmission service, and the device includes:

A grabbing module, configured to grab the desktop image data of the virtual machine that has been rendered by a preset virtual graphics card at a preset time interval in the virtual machine;

A storage module, configured to store the desktop image data in a data buffer preset in the PCI device;

An obtaining module, configured to obtain the desktop image data stored in the data buffer if the connection request sent by the client is monitored;

The first sending module is configured to send the desktop image data to the client, so that the client displays the desktop image data.
A device for transmitting desktop image data of a virtual machine is provided in a client, and the client communicates with the virtual machine through a preset transmission service, and the device includes:

The second sending module is configured to send a connection request to the virtual machine; wherein, a PCI device is registered in the virtual machine, and a preset data buffer in the PCI device stores a preset virtual graphics card rendering process Desktop image data of the virtual machine;

The receiving module is configured to receive the desktop image data sent by the virtual machine, and display the desktop image data through a graphical user interface.
An electronic device, comprising a memory, a processor, and a computer program stored on the memory and capable of running on the processor. The processor implements the above claims 1 to 6 or 7 when the computer program is executed. 8. Steps of any one of the methods for transmitting desktop image data of a virtual machine.
A computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is run by a processor, the virtual machine according to any one of claims 1 to 6 or 7 to 8 is executed. The steps of the desktop image data transfer method.