CN110891084A - Thin client remote desktop control system based on autonomous HVDP protocol - Google Patents
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- H—ELECTRICITY
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
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Abstract
The invention discloses a thin client remote desktop control system based on an autonomous HVDP protocol, which comprises a cloud server and a thin client, wherein the cloud server is connected with the thin client through a remote connection protocol, the remote connection protocol can be any one of freerp, spice and rdesktop, the cloud server uses a PC, and the client uses an ARM board of a rk3188 chip. According to the thin client remote desktop control system based on the independent HVDP protocol, under the condition that the thin client hardware configuration is not high, the cloud desktop system based on the thin client fully utilizes the advantages of server resources through the HVDP independent protocol and the cloud desktop framework, fully exploits the hardware performance of the thin client, achieves smooth display of images and videos of the cloud desktop under high resolution, and improves the desktop display effect of 1080p of the cloud desktop, particularly the video effect and the smoothness.
Description
Technical Field
The invention relates to the field of remote desktop control systems, in particular to a thin client remote desktop control system based on an autonomous HVDP protocol.
Background
The cloud desktop system is mostly used in industries such as enterprise office and education, the cloud desktop system comprises a cloud host and a client (comprising a thin client and a fat client-usually a PC), the thin client adopts an ARM board, a remote connection protocol usually uses freerp, spice, rdesktop and the like, the protocols are limited by the universality of a platform system version and the compatibility of client hardware, the resource advantages of a cloud server are not exerted, the performance of client hardware cannot be fully exploited according to the characteristics of the client hardware, the display effect of the cloud desktop is poor, particularly the display effect of high-definition dynamic images and high-definition videos is poor, and various problems can occur under the high resolution (1080P)1920 x 1080, such as: the method comprises the steps of screen blocking, time delay, video playing, screen splitting and the like, and therefore a thin client remote desktop control system based on an autonomous HVDP protocol is provided.
Disclosure of Invention
The invention mainly aims to provide a thin client remote desktop control system based on an autonomous HVDP protocol, which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the thin client remote desktop control system based on the autonomous HVDP protocol comprises a cloud server and a thin client, wherein the cloud server is connected with the thin client through a remote connection protocol, the remote connection protocol can be any one of freerp, spice and rdesktop, the cloud server uses a PC, and the client uses an ARM board of a rk3188 chip;
the cloud server comprises a session desktop, a server audio processing module, a server video processing module, a server mouse keyboard control module and a server communication module, wherein the output end of the session desktop is electrically connected with the input ends of the server audio processing module and the server video processing module respectively;
the thin client comprises a client communication module, a client audio processing module, a client video processing module and a client mouse and keyboard control module, wherein the output end of the client communication module is electrically connected with the input ends of the client audio processing module and the client video processing module respectively;
the server communication module and the client communication module are connected with each other and used for establishing session communication of a remote desktop and transmitting and receiving data of audio, video, mouse and keyboard information.
Preferably, the conversation desktop is used for responding to desktop images, sounds and mouse and keyboard;
the server video processing module is responsible for capturing screen image data of the session desktop, and performing format conversion and coding compression on the screen image data;
the server-side audio processing module is responsible for sampling conversation audio data, encoding and compressing;
the server-side mouse and keyboard control module is responsible for converting mouse and keyboard information sent by the client side into mouse and keyboard instructions in the session and executing the mouse and keyboard instructions;
and the server communication module is used for packaging the compressed desktop image data and audio data according to an HVDP protocol format, and sending and receiving mouse and keyboard information data sent by the client.
Preferably, the video module of the client is responsible for decoding the received video data by using hardware, and then rendering and displaying the video data by the VPU;
the client audio processing module is responsible for decoding, converting and delivering the received audio data to sound equipment for playing;
the client mouse and keyboard control module is responsible for acquiring relevant information of a mouse and a keyboard from a system bottom layer, wherein the relevant information comprises mouse position information, mouse state information (single-double click and the like) and keyboard key information;
the client communication module is used for receiving desktop image data and audio data packets sent by the server, analyzing the received data packets according to an HVDP protocol, and packaging and sending mouse and keyboard information data according to the HVDP protocol.
The invention also provides a thin client remote desktop control method based on the autonomous HVDP protocol, which comprises the following specific steps:
s1, a thin client and a cloud server establish remote connection;
s2, the server adopts DXGI to directly convert a real-time session desktop (including static desktop images, dynamic desktop images and videos) into YUV data after obtaining the real-time session desktop, compresses and codes the YUV data into H264 data (because the performance of a display card and a CPU of the server is very high, the conversion process can be finished in a very short time (several milliseconds to tens of milliseconds)) by virtue of the resource advantages of the server, and puts the H264 data into a video buffering queue;
s3, simultaneously, the server acquires audio data of the conversation desktop, compresses and encodes the audio data into data in an AAC or MP3 format (the volume of the audio data is much smaller than that of video), and puts the data into an audio buffer queue;
s4, according to the format rule of the HVDP protocol, respectively packaging the compressed and coded video data and audio compressed data into a network video data packet and an audio data packet, putting the network video data packet and the audio data packet into a socket buffer area, and sending the network video data packet and the audio data packet to a thin client;
s5, the thin client receives the data packets, analyzes the data packets by referring to an HVDP protocol format rule, the protocol marks the type (audio/video) of the data at the head of each packet, if the data is audio data, the data is placed in an audio queue and is analyzed and decoded by an audio thread, and the decoded audio data is sent to audio equipment in sequence according to the time stamps to finish audio playing; if the video data is in the video queue, the video data is placed in the video queue and analyzed by a video thread, then the performance of a CPU and a GPU of the thin client is mined according to the hardware characteristic of the thin client, a video data frame (compressed data of H264) is decoded by adopting a hardware mode and then rendered and displayed by a VPU (virtual private Unit) (the speed of the process is much faster than that of software modes used by freedp, rdesktop and the like due to the fact that the hardware mode is used), and therefore high-definition smooth display of cloud desktop video playing is achieved;
and S6, in the aspect of remote operation control, in the current session environment, the thin client acquires current mouse position information, mouse state information (movement, click, double click and the like) and keyboard key information from the bottom layer, the current mouse position information, the mouse state information and the keyboard key information are printed into data packets according to an HVDP protocol format and sent to a server through a network, the server receives the mouse and keyboard information, the mouse and keyboard information is converted into a corresponding mouse and keyboard instruction, and a system interface is called to complete the execution of the instruction.
Compared with the prior art, the invention has the following beneficial effects:
according to the cloud desktop system based on the thin client, under the condition that the hardware configuration of the thin client is not high, the advantages of server resources are fully utilized through an HVDP autonomous protocol and a cloud desktop framework, the hardware performance of the thin client is fully exploited, smooth display of images and videos of the cloud desktop under high resolution is achieved, and the desktop display effect of 1080p of the cloud desktop, particularly the video effect and the smoothness are improved.
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FIG. 1 is an overall system block diagram of a thin client remote desktop control system based on an autonomous HVDP protocol according to the present invention;
fig. 2 is a partial system block diagram of a thin client remote desktop control system based on an autonomous HVDP protocol according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Examples
As shown in fig. 1-2, a thin client remote desktop control system based on an autonomous HVDP protocol includes a cloud server and a thin client, where the cloud server is connected with the thin client through a remote connection protocol, the remote connection protocol may be any one of freerp, spice and rdesktop, the cloud server uses a PC, and the client uses an ARM board with a rk3188 chip;
the cloud server comprises a session desktop, a server audio processing module, a server video processing module, a server mouse keyboard control module and a server communication module, wherein the output end of the session desktop is electrically connected with the input ends of the server audio processing module and the server video processing module respectively;
the thin client comprises a client communication module, a client audio processing module, a client video processing module and a client mouse and keyboard control module, wherein the output end of the client communication module is electrically connected with the input ends of the client audio processing module and the client video processing module respectively;
the server communication module and the client communication module are connected with each other and used for establishing session communication of a remote desktop and transmitting and receiving data of audio, video, mouse and keyboard information.
The conversation desktop is used for responding to desktop images, sounds and a mouse keyboard;
the server video processing module is responsible for capturing screen image data of the session desktop, and performing format conversion and coding compression on the screen image data;
the server side audio processing module is responsible for sampling conversation audio data, encoding and compressing;
the server mouse and keyboard control module is responsible for converting the mouse and keyboard information sent by the client into mouse and keyboard instructions in the session and executing the mouse and keyboard instructions;
and the server communication module is used for packaging the compressed desktop image data and audio data according to an HVDP protocol format, and sending and receiving mouse and keyboard information data sent by the client.
The video module of the client is responsible for decoding the received video data by using hardware, and then rendering and displaying the video data by the VPU;
the client audio processing module is responsible for decoding, converting and delivering the received audio data to the sound equipment for playing;
the client mouse and keyboard control module is responsible for acquiring relevant information of a mouse and a keyboard from the bottom layer of the system, wherein the relevant information comprises mouse position information, mouse state information (single-double click and the like) and keyboard key information;
the client communication module is used for receiving desktop image data and audio data packets sent by the server, analyzing the received data packets according to an HVDP protocol, and packaging and sending mouse and keyboard information data according to the HVDP protocol.
The invention also provides a thin client remote desktop control method based on the autonomous HVDP protocol, which comprises the following specific steps:
s1, a thin client and a cloud server establish remote connection;
s2, the server adopts DXGI to directly convert a real-time session desktop (including static desktop images, dynamic desktop images and videos) into YUV data after obtaining the real-time session desktop, compresses and codes the YUV data into H264 data (because the performance of a display card and a CPU of the server is very high, the conversion process can be finished in a very short time (several milliseconds to tens of milliseconds)) by virtue of the resource advantages of the server, and puts the H264 data into a video buffering queue;
s3, simultaneously, the server acquires audio data of the conversation desktop, compresses and encodes the audio data into data in an AAC or MP3 format (the volume of the audio data is much smaller than that of video), and puts the data into an audio buffer queue;
s4, according to the format rule of the HVDP protocol, respectively packaging the compressed and coded video data and audio compressed data into a network video data packet and an audio data packet, putting the network video data packet and the audio data packet into a socket buffer area, and sending the network video data packet and the audio data packet to a thin client;
s5, the thin client receives the data packets, analyzes the data packets by referring to an HVDP protocol format rule, the protocol marks the type (audio/video) of the data at the head of each packet, if the data is audio data, the data is placed in an audio queue and is analyzed and decoded by an audio thread, and the decoded audio data is sent to audio equipment in sequence according to the time stamps to finish audio playing; if the video data is in the video queue, the video data is placed in the video queue and analyzed by a video thread, then the performance of a CPU and a GPU of the thin client is mined according to the hardware characteristic of the thin client, a video data frame (compressed data of H264) is decoded by adopting a hardware mode and then rendered and displayed by a VPU (virtual private Unit) (the speed of the process is much faster than that of software modes used by freedp, rdesktop and the like due to the fact that the hardware mode is used), and therefore high-definition smooth display of cloud desktop video playing is achieved;
and S6, in the aspect of remote operation control, in the current session environment, the thin client acquires current mouse position information, mouse state information (movement, click, double click and the like) and keyboard key information from the bottom layer, the current mouse position information, the mouse state information and the keyboard key information are printed into data packets according to an HVDP protocol format and sent to a server through a network, the server receives the mouse and keyboard information, the mouse and keyboard information is converted into a corresponding mouse and keyboard instruction, and a system interface is called to complete the execution of the instruction.
The method has the advantages that the video and audio acquisition and the compression coding of the cloud server side use the autonomous HVDP protocol and the architecture, compared with the processing in the windows native remote desktop protocol and the processing of the third-party open-source remote desktop protocol, the method has complete autonomy and controllability, and is more favorable for exerting the advantages of hardware resources of the server side, particularly the acquisition of dynamic desktop image data, color conversion and compression coding of several key parts under high resolution, and the method can completely and autonomously select and fully use hardware for processing so as to ensure the efficient coding compression of the cloud desktop and the smooth playing of high-definition videos;
the HVDP protocol abandons a layer-by-layer encryption mode adopted by some mainstream remote desktop protocols for being compatible with client hardware and a low-efficiency software processing mode in the aspect of image and video processing;
after the client receives data according to the protocol, the processing of the images and videos completely aims at the hardware conditions of the client according to the cloud desktop architecture based on the HVDP protocol, the hardware characteristics are fully mined, the images and videos are coded and displayed by hardware, and the efficiency is far higher than that of a software processing mode. Therefore, smooth display of high-definition image quality videos is achieved;
according to the cloud desktop system based on the thin client, under the condition that the thin client hardware configuration is not high, the advantages of server resources are fully utilized through an HVDP autonomous protocol and a cloud desktop framework, the hardware performance of the thin client is fully exploited, smooth display of images and videos of the cloud desktop under high resolution is achieved, and the desktop display effect of 1080p of the cloud desktop, especially the video effect and the smoothness are improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A thin client remote desktop control system based on an autonomous HVDP protocol comprises a cloud server and a thin client, and is characterized in that: the cloud server is connected with the thin client through a remote connection protocol, the remote connection protocol can be any one of freerp, spice and rdesktop, the cloud server uses a PC, and the client uses an ARM board of a rk3188 chip;
the cloud server comprises a session desktop, a server audio processing module, a server video processing module, a server mouse keyboard control module and a server communication module, wherein the output end of the session desktop is electrically connected with the input ends of the server audio processing module and the server video processing module respectively;
the thin client comprises a client communication module, a client audio processing module, a client video processing module and a client mouse and keyboard control module, wherein the output end of the client communication module is electrically connected with the input ends of the client audio processing module and the client video processing module respectively;
the server communication module and the client communication module are connected with each other and used for establishing session communication of a remote desktop and transmitting and receiving data of audio, video, mouse and keyboard information.
2. The thin client remote desktop control system based on the autonomous HVDP protocol of claim 1, wherein: the conversation desktop is used for responding desktop images, sounds, a mouse and a keyboard;
the server video processing module is responsible for capturing screen image data of the session desktop, and performing format conversion and coding compression on the screen image data;
the server-side audio processing module is responsible for sampling conversation audio data, encoding and compressing;
the server-side mouse and keyboard control module is responsible for converting mouse and keyboard information sent by the client side into mouse and keyboard instructions in the session and executing the mouse and keyboard instructions;
and the server communication module is used for packaging the compressed desktop image data and audio data according to an HVDP protocol format, and sending and receiving mouse and keyboard information data sent by the client.
3. The thin client remote desktop control system based on the autonomous HVDP protocol of claim 1, wherein: the video module of the client is responsible for decoding the received video data by using hardware, and then rendering and displaying the video data by the VPU;
the client audio processing module is responsible for decoding, converting and delivering the received audio data to sound equipment for playing;
the client mouse and keyboard control module is responsible for acquiring relevant information of a mouse and a keyboard from a system bottom layer, wherein the relevant information comprises mouse position information, mouse state information (single-double click and the like) and keyboard key information;
the client communication module is used for receiving desktop image data and audio data packets sent by the server, analyzing the received data packets according to an HVDP protocol, and packaging and sending mouse and keyboard information data according to the HVDP protocol.
4. The thin client remote desktop control method based on the autonomous HVDP protocol according to any of claims 1-3, wherein the specific steps are as follows:
s1, a thin client and a cloud server establish remote connection;
s2, the server adopts DXGI to directly convert a real-time session desktop (including static desktop images, dynamic desktop images and videos) into YUV data after obtaining the real-time session desktop, compresses and codes the YUV data into H264 data (because the performance of a display card and a CPU of the server is very high, the conversion process can be finished in a very short time (several milliseconds to tens of milliseconds)) by virtue of the resource advantages of the server, and puts the H264 data into a video buffering queue;
s3, simultaneously, the server acquires audio data of the conversation desktop, compresses and encodes the audio data into data in an AAC or MP3 format (the volume of the audio data is much smaller than that of video), and puts the data into an audio buffer queue;
s4, according to the format rule of the HVDP protocol, respectively packaging the compressed and coded video data and audio compressed data into a network video data packet and an audio data packet, putting the network video data packet and the audio data packet into a socket buffer area, and sending the network video data packet and the audio data packet to a thin client;
s5, the thin client receives the data packets, analyzes the data packets by referring to an HVDP protocol format rule, the protocol marks the type (audio/video) of the data at the head of each packet, if the data is audio data, the data is placed in an audio queue and is analyzed and decoded by an audio thread, and the decoded audio data is sent to audio equipment in sequence according to the time stamps to finish audio playing; if the video data is in the video queue, the video data is placed in the video queue and analyzed by a video thread, then the performance of a CPU and a GPU of the thin client is mined according to the hardware characteristic of the thin client, a video data frame (compressed data of H264) is decoded by adopting a hardware mode and then rendered and displayed by a VPU (virtual private Unit) (the speed of the process is much faster than that of software modes used by freedp, rdesktop and the like due to the fact that the hardware mode is used), and therefore high-definition smooth display of cloud desktop video playing is achieved;
and S6, in the aspect of remote operation control, in the current session environment, the thin client acquires current mouse position information, mouse state information (movement, click, double click and the like) and keyboard key information from the bottom layer, the current mouse position information, the mouse state information and the keyboard key information are printed into data packets according to an HVDP protocol format and sent to a server through a network, the server receives the mouse and keyboard information, the mouse and keyboard information is converted into a corresponding mouse and keyboard instruction, and a system interface is called to complete the execution of the instruction.
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| WO2023066183A1 (en) * | 2021-10-19 | 2023-04-27 | 北京百度网讯科技有限公司 | Data processing method and apparatus, device, and storage medium |
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