CN106331733A - Desktop cloud terminal's audio and video data real-time processing method and system - Google Patents

Desktop cloud terminal's audio and video data real-time processing method and system Download PDF

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Publication number
CN106331733A
CN106331733A CN201610859630.3A CN201610859630A CN106331733A CN 106331733 A CN106331733 A CN 106331733A CN 201610859630 A CN201610859630 A CN 201610859630A CN 106331733 A CN106331733 A CN 106331733A
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China
Prior art keywords
module
desktop cloud
virtual usb
streaming media
virtual
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CN201610859630.3A
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Chinese (zh)
Inventor
刘昌平
陈杰
姜建华
吴伟美
徐红波
常亚萍
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Guangdong Institute of Science and Technology
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Guangdong Institute of Science and Technology
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Priority to CN201610859630.3A priority Critical patent/CN106331733A/en
Publication of CN106331733A publication Critical patent/CN106331733A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21Server components or server architectures
    • H04N21/218Source of audio or video content, e.g. local disk arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H04N21/2368Multiplexing of audio and video streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808Management of client data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/434Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
    • H04N21/4341Demultiplexing of audio and video streams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/443OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Computer Graphics (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The invention discloses a desktop cloud terminal's audio and video data real-time processing method and system. The method comprises the following steps: collecting the camera-photographed images and sound recording equipment recorded sound in the desktop cloud terminal; encoding them into a streaming media format; using a streaming media server to provide streaming media data; collecting streaming media data in the desktop cloud platform and decoding the collected images and sound; transmitting them to a virtual USB camera and a virtual USB sound card; A virtual machine of the desktop cloud platform obtains the images and sound from the virtual USB camera and the virtual USB sound card for use by the application software of the virtual machine. The desktop cloud terminal's audio and video data real-time processing system comprises a terminal collection module, a streaming media server module, a control module, a streaming media collection module, a decoding module, a virtual USB camera, a virtual USB sound card and a communication module. When a user starts the camera and the sound recording equipment on the desktop cloud terminal, the real-time transmission of audio and video data can be achieved on the desktop cloud terminal; the user can also close the camera and the sound recording equipment on the desktop cloud terminal to recycle resources on the desktop cloud platform.

Description

A kind of desktop cloud terminal audio, video data real-time processing method and system
Technical field
The present invention relates to field of cloud computer technology, particularly relate to a kind of by real-time to the audio frequency of desktop cloud terminal, video data It is transferred to the method and system of virtual machine.
Background technology
In desktop cloud technology and application, virtual machine runs on the remote server, by desktop picture and voice data It is transferred on terminal unit (such as PC, thin-client, mobile terminal etc.).Terminal unit output desktop picture and audio signal, The peripheral hardware event (such as tapping keyboard, mobile mouse etc.) of acquisition terminal equipment feed back to the virtual machine of remote server simultaneously On, desktop picture and voice data after renewal continue to be transferred to terminal unit.
The external equipment of desktop cloud terminal except image show, in addition to the outut device such as audio frequency broadcasting, also photographic head, record The input equipments such as sound, keyboard, mouse.These input equipments are connected directly between in desktop cloud terminal, with the void on remote server Plan machine does not has direct physical connection.In order to make desktop cloud provide the most real pc user to experience, desktop cloud terminal must be by defeated Enter the real-time data transmission of equipment to virtual machine.The photographic head of desktop cloud terminal, sound pick-up outfit produce audio frequency, video data, this The amount of a little data is very big, and requirement of real-time is high, big on Consumer's Experience impact, it is therefore desirable to solve emphatically desktop cloud terminal audio frequency, Video data is to the problem of virtual machine real-time Transmission.
For this problem, existing technical scheme mainly terminal unit and virtual machine (or remote server) it Between set up network and connect, transmission video and voice data.Concrete technological means has a variety of, such as (or remote at virtual machine Journey server) internally installed data communication software, receive the data of remote terminal, this technological means depends on concrete virtual The operating system of machine (or remote server).Also there are some technological means to fictionalize USB device on the remote server, use The communication protocols such as RDP, ICA, PCoIP realize the data communication of remote terminal and remote server.Due to audio frequency, the data of video Amount is big, and for improving real-time, audio, video data distortion is serious;For improving audio-visual quality, real-time will reduce.
Existing patented technology is as follows:
" method and system of a kind of computer receiving video data of mobile phone with camera " (CN100383769C) announces A kind of method and system using mobile phone camera on PC.Within the system, mobile phone is directly connected to PC, at PC Upper installation Softcam, obtains the video data of mobile phone camera.The method and system can not process the audio frequency number on mobile phone According to.
" virtual USB sound card creation method based on VOIP phone " (CN103873711A) creates virtual on Windows USB sound card, exchanges voice data by virtual sound card and network with VOIP phone.The method can not process video data.
Portion of external equipment does not has USB interface, is connected with mobile device by earphone mouth or dock interface, it is impossible to pass through USB interface is connected with PC main frame." a kind of remote communication method and system " (CN103823771A) proposes a kind of by outside this type of Portion's device map is to the method and system ([0005th] section) of PC main frame.The method needs to install on the Windows of PC to calculate Machine software, and Voice & Video data can not be processed, it is not suitable for the operating system of virtual machine environment.
" implementation method of a kind of virtual USB bus " (CN103312781A) provides one and is reflected by server USB device The method being mapped to Terminal Server Client, uses the USB device on server on the client.
" a kind of mobile terminal USB virtualization mapping method " (CN102882871A) is by the physical USB device of mobile terminal The virtual USB device being mapped on remote server so that server is operable to the USB device on mobile terminal.
" printer mapping method based on desktop virtual technology and system " (CN104394290A) is by terminal unit Printer is mapped on the virtual unit of virtual machine, and virtual machine sends print command to terminal unit, completes printing.This Method can in all multi-dummy machines the printer of shared terminal equipment.Being similar to, " storage based on desktop virtual technology sets Standby mapping method and system " (CN104881315A) by terminal storage device map to virtual machine.All multi-dummy machines are using eventually During end storage device, the problem that there is access conflict.
" using method in virtual machine of the sensor in a kind of mobile device and system " (CN104199720A) provides A kind of method of transmission sensor data between mobile device and virtual machine, virtual machine carries out phase after receiving sensing data The data answered process and calculate.
" the USB device teleengineering support method and system of Virtual machine " (CN102523264B) provides a kind of client master The method of machine USB device teleengineering support, uses the external equipments such as the USB disk of client host, USB printer on a virtual machine ([0005th] section).
" a kind of communication module, long distance control system and remote monitoring terminal " (CN102143144B) provides a kind of mould that communicates Block, obtains the audio frequency of remote camera, video data, and is transferred to monitor terminal.
" method of seamless use cloud terminal local photographic head in VDI virtual desktop " (CN103533034A) discloses one Virtual machine uses the method for terminal camera.The virtual machine of the method uses Windows, is provided with redirection service end, accepts The view data of terminal camera also shows.The method relies on concrete operating system, i.e. Windows;Must be in virtual machine Build-in services end software;Can not the voice data of processing terminal.It is similar to, " photographic head mapping method based on virtual unit " (CN104199723A) Softcam is installed on Windows, uses cloud desktop protocol (such as RDP, ICA, PCoIP etc.) by eventually The view data of end photographic head is transferred to the Softcam of Windows." it is applied at the camera video of virtual desktop environment Reason method and relevant device " (CN 104301687A) virtual machine install " video traffic special purpose interface ", regarding from client computer Frequently image is simply possible to use in " camera video application module " ([0045th] section, Fig. 3 and Fig. 8) of virtual machine, it is impossible to for virtual Other application software (such as instant communication software etc.) inside machine.
" full-duplex audio transmission system and method based on virtualization desktop environment " (CN104410664A) provides one Plant the method that virtual machine uses terminal audio frequency equipment, it is achieved the voice communication between virtual machine and terminal.It is similar to, also has " base Headset virtualization in virtualization desktop realizes system and audio frequency transmission method thereof " (CN104391672A).
The problem that " a kind of application data offering method based on virtual machine, Apparatus and system " (CN102917246B) solves Being that view data and the voice data of virtual machine are transferred to client terminal ([the 0012nd section]), technological means is on the server Arranging acquisition module, coding module and sending module (Fig. 1 and Fig. 2), it is functionally similar to the remote desktops such as RDP, ICA, PCoIP Agreement.
" the offer method and devices of computer shared platform sound intermediate frequency data " (CN103294444B) is in multiple users share During same computer, it is provided that a kind of non-interfering method realizes multi-user's recording and audio playing function.The method and dress Put can not processing terminal video image, be not suitable for virtual machine environment.
The mobile terminal such as mobile phone, panel computer can act also as desktop cloud terminal.Mobile terminal audio, video data processes at present Patented technology be concentrated mainly on live application aspect, such as " mobile terminal carries out video to the Internet and mobile Internet Live method " (CN 102811373A), " supporting the mobile terminal of picture live-mode, net cast method and system " (CN 102378001A) etc..
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of process desktop cloud terminal audio, video data in real time And it is transferred to the method and system of virtual machine, improve audio frequency and video number while shortening desktop cloud terminal audio, video data transmission delay According to quality.
The purpose of the present invention is realized by following technical scheme:
A kind of desktop cloud terminal audio, video data real-time processing method, including:
At desktop cloud terminal acquisition camera, the image of sound pick-up outfit and voice data;
By the streaming media server of desktop cloud terminal, image become with audio data coding stream media format data, and defeated Go out;
Desktop cloud platform obtains stream media format data and decodes acquisition image and voice data;
Decoded view data is transferred to virtual USB photographic head, and preserves;Decoded voice data is transferred to Virtual USB sound card, and preserve;
The voice data of the view data stored by described virtual USB photographic head and the storage of virtual USB sound card is transferred to void Plan machine, for VME operating system application software.
A kind of desktop cloud terminal audio, video data real time processing system, including: terminal acquisition module, streaming media server mould Block, control module, Streaming Media acquisition module, decoder module, virtual USB photographic head, virtual USB sound card and communication module;Described
Terminal acquisition module, gathers image and the voice data of audio frequency apparatus of desktop cloud terminal photographic head;
Streaming media server module, becomes stream media format data by image with audio data coding;
Control module, is used for start or close a terminal acquisition module and streaming media server module, sends to communication module Instruction and parameter;
Streaming Media acquisition module, for obtaining the stream media format data of streaming media server module;
Decoder module, decodes image and voice data from stream media format data, and by decoded view data It is transferred to virtual USB photographic head and decoded voice data is transferred to virtual USB sound card;
Virtual USB photographic head, is used for storing decoded view data;
Virtual USB sound card, is used for storing decoded voice data;
Communication module, for receiving parameter and the instruction of control module, starts or closes Streaming Media acquisition module, decoding mould Block, virtual USB photographic head and virtual USB sound card.
Compared with prior art, one or more embodiments of the invention can have the advantage that
1, at desktop cloud terminal acquisition camera, the image of sound pick-up outfit and voice data and be encoded into stream medium data, The server stress of desktop cloud platform can be alleviated.
2, use stream media technology transmission video and voice data, it is possible to reduce the volume of transmitted data of desktop cloud, improve sound Video frequency data quality, shortens the time delay of data transmission, improves real-time.
3, virtual USB photographic head and virtual USB sound card are unrelated with the operating system of virtual machine, it is not necessary in virtual machine operations system System installs extra software, supports more VME operating system.Any application software on VME operating system all may be used To use image and the voice data of virtual USB sound card of virtual USB photographic head.
4, virtual USB photographic head and the distribution according to need of virtual USB sound card, it is possible to increase the resource utilization of server, alleviates The load of server.
Accompanying drawing explanation
Fig. 1 is the implementation method flow chart that desktop cloud terminal audio, video data processes in real time;
Fig. 2 is the general system set-up figure of desktop cloud terminal audio, video data real time processing system;
Fig. 3 is an embodiment schematic diagram of multiple desktop cloud terminal audio, video data real time processing system.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing to this Bright it is described in further detail.
As it is shown in figure 1, the method processed in real time for desktop cloud terminal audio, video data, the method includes: desktop cloud terminal Acquisition camera, the video of sound pick-up outfit, voice data, and it is encoded into stream media format data, it is sent to desktop cloud terminal Streaming media server;
Desktop cloud terminal sets up a streaming media server, accepts the data of stream media format, waits desktop cloud server Connection;
The acquisition module of desktop cloud server is connected to the streaming media server of desktop cloud terminal, obtains stream media format Data, are transferred to the decoder module of desktop cloud server;
The decoder module of desktop cloud server decodes view data and voice data from stream media format data, transmission Virtual USB photographic head and virtual USB sound card to desktop cloud platform;
The operating system of virtual machine obtains view data and voice data from virtual USB photographic head and virtual USB sound card, supplies The application software of virtual machine uses.
As in figure 2 it is shown, the system that realizes processed in real time for desktop cloud terminal audio, video data, this system includes: terminal is adopted Collection module, streaming media server module, control module, communication module, Streaming Media acquisition module, decoder module, virtual USB shooting Head and virtual USB sound card;Described
Terminal acquisition module, gathers desktop cloud terminal photographic head, the image of sound pick-up outfit, voice data, and is transferred to stream Media server module;
Streaming media server module, receives image and the voice data of terminal acquisition module, is encoded into stream medium data lattice Formula, waits the connection of Streaming Media acquisition module;
Control module, receives user and starts the instruction that (or closedown) desktop cloud terminal audio, video data processes, start (or close Close) terminal acquisition module and streaming media server module, and send instruction and parameter to communication module;
Streaming Media acquisition module;It is connected to streaming media server module, obtains stream media format data, and be transferred to decoding Module;
Decoder module;Obtain stream media format data from Streaming Media acquisition module, be decoded into image and voice data, will figure As being transferred to virtual USB photographic head, voice data is transferred to virtual USB sound card;
Virtual USB photographic head;Receive the view data of decoder module, and be transferred to virtual machine;
Virtual USB sound card;Receive the voice data of decoder module, and be transferred to virtual machine;
Communication module;Receive parameter and the instruction of control module, start (or closedown) Streaming Media acquisition module, decoding mould Block, virtual USB photographic head and virtual USB sound card.
The embodiment that desktop cloud terminal audio, video data processes in real time is as it is shown on figure 3, use Android panel computer As desktop cloud terminal, Android panel computer realizes terminal acquisition module, streaming media server module and controls mould Block, uses and H.264 carries out video, the audio frequency of terminal coded treatment and generate stream medium data;Use server hardware device As desktop cloud platform, with CentOS as operating system, as virtual platform and create virtual machine with VirtualBox, Streaming Media acquisition module, decoder module, virtual USB photographic head, virtual USB sound card and communication module is realized on CentOS.Desktop Image and the sound of virtual machine are transferred on Android panel computer by cloud platform, and Android panel computer is by keyboard and mouse Parameter is transferred to virtual machine.
User is assigned by the control module of Android panel computer and starts the finger that desktop cloud terminal audio, video data processes Order, flow process is:
(1) control module starts terminal acquisition module and streaming media server module;
(2) control module issues enabled instruction and parameter to communication module;
(3), after communication module receives enabled instruction and the parameter of control module, it is respectively started Streaming Media acquisition module, decoding Module, virtual USB photographic head, virtual USB sound card;
(4) virtual USB photographic head and virtual USB sound card are tied to the virtual machine specified by communication module;
(5) operating system of virtual machine obtains image and sound, virtual machine from virtual USB photographic head and virtual USB sound card The application software of operating system uses image and sound.
User is assigned by the control module of Android panel computer and closes the finger that desktop cloud terminal audio, video data processes Order, flow process is:
(1) control module issues out code and parameter to communication module;
(2) control module closes terminal acquisition module and the streaming media server module of desktop cloud terminal;
(3), after communication module receives out code and parameter, close Streaming Media acquisition module, decoder module respectively, solve Binding except virtual USB photographic head, virtual USB sound card and virtual machine;
(4) communication module destroys virtual USB photographic head and virtual USB sound card, Resource recovery.
Desktop cloud terminal audio, video data real time processing system supports multiple desktop cloud terminal, and embodiment is as shown in Figure 3.With Two Android panel computers, as desktop cloud terminal, are connected to desktop cloud platform, start the photographic head of desktop cloud terminal simultaneously And sound pick-up outfit;In desktop cloud platform, communication module is respectively started two set Streaming Media acquisition modules, decoder module, virtual USB Photographic head and virtual USB sound card (as shown in Figure 3).
Although the embodiment that disclosed herein is as above, but described content is only to facilitate understand the present invention and adopt Embodiment, be not limited to the present invention.Technical staff in any the technical field of the invention, without departing from this On the premise of spirit and scope disclosed by invention, in form and any amendment and change can be made in details implement, But the scope of patent protection of the present invention, still must be defined in the range of standard with appending claims.

Claims (5)

1. a desktop cloud terminal audio, video data real-time processing method, it is characterised in that described method includes:
At desktop cloud terminal acquisition camera, the image of sound pick-up outfit and voice data;
By the streaming media server of desktop cloud terminal, image become with audio data coding stream media format data, and export;
Desktop cloud platform obtains stream media format data and decodes acquisition image and voice data;
Decoded view data is transferred to virtual USB photographic head, and preserves;Decoded voice data is transferred to virtual USB sound card, and preserve;
The voice data of the view data stored by described virtual USB photographic head and the storage of virtual USB sound card is transferred to virtual machine, Use for VME operating system application software.
2. a desktop cloud terminal audio, video data real time processing system, it is characterised in that described system includes: terminal gathers mould Block, streaming media server module, control module, Streaming Media acquisition module, decoder module, virtual USB photographic head, virtual USB sound Card and communication module;Described
Terminal acquisition module, gathers image and the voice data of audio frequency apparatus of desktop cloud terminal photographic head;
Streaming media server module, becomes stream media format data by image with audio data coding;
Control module, is used for start or close a terminal acquisition module and streaming media server module, and sends finger to communication module Order and parameter;
Streaming Media acquisition module, for obtaining the stream media format data of streaming media server module;
Decoder module, decodes image and voice data from stream media format data, and decoded view data is transmitted It is transferred to virtual USB sound card to virtual USB photographic head and decoded voice data;
Virtual USB photographic head, is used for storing decoded view data;
Virtual USB sound card, is used for storing decoded voice data;
Communication module, for receiving parameter and the instruction of control module, start or close Streaming Media acquisition module, decoder module, Virtual USB photographic head and virtual USB sound card.
3. desktop cloud terminal audio, video data real time processing system as claimed in claim 1, it is characterised in that desktop cloud terminal The startup that audio, video data processes in real time specifically includes:
Control module starts terminal acquisition module and streaming media server module, and issues enabled instruction and ginseng to communication module Number;
After communication module receives enabled instruction and the parameter of control module, it is respectively started Streaming Media acquisition module, decoder module, void Intend USB camera, virtual USB sound card;Virtual USB photographic head and virtual USB sound card are tied to specify by described communication module Virtual machine;
Virtual machine obtains view data from virtual USB photographic head and obtains voice data from virtual USB sound card.
4. desktop cloud terminal audio, video data real time processing system as claimed in claim 2, it is characterised in that desktop cloud terminal The closedown that audio, video data processes in real time specifically includes:
Control module issues out code and parameter to communication module, and closes terminal acquisition module and the stream matchmaker of desktop cloud terminal Body server module;
After communication module receives out code and parameter, close Streaming Media acquisition module, decoder module respectively, release virtual USB camera, virtual USB sound card and the binding of virtual machine;And destroy virtual USB photographic head and virtual USB sound card, reclaim money Source.
5. desktop cloud terminal audio, video data real time processing system as claimed in claim 2, it is characterised in that described terminal is adopted Collection module, streaming media server module, Streaming Media acquisition module, decoder module, virtual USB photographic head, virtual USB sound card are opening Distribution when dynamic desktop cloud terminal audio, video data processes, destroys when terminating desktop cloud terminal audio, video data and processing.
CN201610859630.3A 2016-09-28 2016-09-28 Desktop cloud terminal's audio and video data real-time processing method and system Pending CN106331733A (en)

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