CN106790612A - A kind of dynamic virtual camera mapping method and system - Google Patents
A kind of dynamic virtual camera mapping method and system Download PDFInfo
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- CN106790612A CN106790612A CN201611250836.2A CN201611250836A CN106790612A CN 106790612 A CN106790612 A CN 106790612A CN 201611250836 A CN201611250836 A CN 201611250836A CN 106790612 A CN106790612 A CN 106790612A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/2866—Architectures; Arrangements
- H04L67/30—Profiles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/661—Transmitting camera control signals through networks, e.g. control via the Internet
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- Computer Networks & Wireless Communication (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The present invention provides a kind of dynamic virtual camera mapping method and system, and methods described includes：Service end and client set up communication connection；Service end detects whether it is connected with USB camera equipment, when check be connected with USB camera equipment when, to client send camera device insertion information and camera device attribute information；After the insertion information of camera device of service end transmission and attribute information is received, the video conversion form that service end is supported is added in the attribute information client, and merging saves as device descriptive information；USB virtual bus module creates Softcam equipment corresponding with the camera device according to the device descriptive information；Camera application module uses corresponding USB camera equipment by the Softcam equipment.In the way of Softcam be dynamically mapped to USB camera equipment to be used on another main frame by the dynamic virtual camera mapping method that the present invention is provided, keep the attribute informations such as device name, equipment PID, VID of the camera consistent, compatibility is good, easy to use.
Description
Technical field
The present invention relates to computer information technology field, more particularly to a kind of dynamic virtual camera mapping method and it is
System.
Background technology
With the development of computer information technology, a kind of scene of use remote shooting head apparatus is engendered, be exactly
By a local terminal, the USB camera equipment in terminal will be connected to, be mapped to distance host and uses, it is long-range main
Camera application software in machine can be as using local device, the USB camera equipment in using terminal, this application side
Formula is referred to as USB camera mapping.
Current most of Softcam technologies, can only fictionalize permanent, with fixed attribute in distance host
Softcam equipment, it is impossible to the dynamic property parameters for adapting to the camera device of actual installation in terminal, such as equipment
The information such as title, PID, VID, causes the camera vertical application None- identified Softcam bound with these information,
So as to cannot compatibility use, it is very inconvenient in actual use.
For example, the patent of Publication No. CN104199723A, there is provided a kind of camera mapping side based on virtual unit
Method so that user application can operate Softcam as local operation camera.But it can not be obtained locally
The physical attribute information of camera, at the same created in Windows systems with the physical attribute information mutually this with virtual take the photograph
Mapping is realized as head；Therefore poor compatibility, some special camera application software can not use.
The content of the invention
For problem above, patent purpose of the present invention is to devise a kind of dynamic virtual camera mapping method and be
System, USB camera equipment is dynamically used being mapped on another main frame in the way of Softcam, on the one hand due to
Softcam equipment maintain with the attribute information such as USB camera identical device name, PID and VID, ensure that and
The favorable compatibility of application module, the video that on the other hand can be needed according to network bandwidth selection converts form, convenient different
The use of scene.
Specific technical scheme of the invention is as follows：
A kind of dynamic virtual camera mapping method, including：
Step S101, service end and client set up communication connection；
Step S102, service end detects whether it is connected with USB camera equipment, and USB camera is connected with when checking
During equipment, the insertion information of camera device and the attribute information of camera device, the attribute information are sent to client
Including device name, equipment PID and equipment VID；
Step S103, client receive service end transmission camera device insertion information and attribute information after,
The video that service end is supported converts form and is added in the attribute information, and merging saves as device descriptive information；
Step S104, client sends the insertion message of the camera device and described sets to USB virtual bus module
Standby description information, USB virtual bus module creates corresponding with the camera device virtual according to the device descriptive information
Camera device；
Step S105, camera application module uses corresponding USB camera equipment by the Softcam equipment；
Step S106, when USB camera equipment is removed, service end will notify client and USB virtual bus module roots
Corresponding Softcam equipment is automatically deleted according to the corresponding attribute information of the camera device；Specifically include：
When camera device is removed, service end will automatically check the removal information of USB camera equipment, and to described
Client sends the removal information and the corresponding attribute information of the camera device；
After client receives the removal information, the removal information and corresponding is sent to USB virtual bus module
The attribute information；
USB virtual bus module is deleted after the removal information and attribute information is received according to the attribute information
Corresponding Softcam equipment.
Further, camera application module of the present invention is taken the photograph by the Softcam equipment using corresponding USB
As head apparatus, specifically include：
Softcam equipment will ask the request message of video data to be sent to client through USB virtual unit buses,
The video format that the request message includes the attribute information of camera device and asked；
The request message is sent to service end by client, and service end obtains correspondence after the request message is received
USB camera equipment video data；
The video data is sent to client, client by service end after receiving the video data of USB camera equipment
After end receives the video data, video data is sent to the camera through USB virtual bus and Softcam equipment
Application module.
Further, service end of the present invention is received the video data after the video data of USB camera equipment
Client is sent to, is further included：
The service end decides whether to perform video format conversion according to the video format of client request；If
The video format of the video data that service end is obtained is consistent with the form that client is asked, and service end is directly by the video counts
According to being sent to client；If the video format of the video data for obtaining is inconsistent with the form of request, service end is regarded described
Frequency is then forwarded to client according to after being converted into the form that client is asked.
Further, service end of the present invention and client set up communication connection, specifically include：
Client initialization runs, and according to the address of the service end for configuring, initiates connection request, if successful connection,
Client and service end set up the communication connection of persistence；If it fails to connect, client is attempted repeating hair at regular intervals
Play connection request；
Service end initialization operation, and according to the address of the client for configuring, connection request is initiated, if successful connection,
Client and service end set up the communication connection of persistence；If it fails to connect, service end enters state of intercepting, client is waited
Initiate described connection request.
A kind of dynamic virtual camera mapped system, including server module, client modules, USB virtual bus module,
Softcam EM equipment module；
The server module is connected with camera for detecting whether it is connected with USB camera equipment when checking
During equipment, the insertion information of camera device and the attribute information of camera device, the attribute are sent to client modules
Information includes device name, equipment PID and equipment VID；
The client modules are used to receive the insertion information and attribute information of the camera device of service end transmission
Afterwards, obtain the video conversion form of the service end support and be added in the attribute information, merging saves as equipment description
Information；And the insertion message and the device descriptive information of the camera device are sent to USB virtual bus module；
The USB virtual bus module is used to create corresponding with the camera device according to the device descriptive information
Softcam EM equipment module.
Further, server module of the present invention and client modules are further included：When removal USB camera equipment
When, server module will notify client modules and USB virtual bus module according to the corresponding attribute letter of the camera device
Breath is automatically deleted corresponding Softcam equipment.
Further, camera application module of the present invention is further included：
The camera application module will ask the request message of video data to be sent to client through USB virtual bus modules
End module, the video format that the request message includes the attribute information of camera device and asked；
The request message is sent to server module by client modules, and server module is receiving the request message
Afterwards, the video data of corresponding USB camera equipment is obtained；
The video data is sent to client mould by server module after receiving the video data of USB camera equipment
Block, after client modules receive the video data, the camera application module is sent to by video data
The dynamic virtual camera mapping method that the present invention is provided realizes the dynamic creation and shifting of Softcam equipment
Remove, while keeping consistent with the device name of actual camera, PID, VID；On the one hand can compatibility USB shootings to greatest extent
Special application program, on the other hand can select suitable video transmission format according to network quality, applied widely.
Brief description of the drawings
Embodiments of the present invention is further illustrated referring to the drawings, wherein：
Fig. 1 is a kind of flow chart of dynamic virtual camera mapping method of the invention；
Fig. 2 is a kind of module map of dynamic virtual camera mapped system of the invention.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The present invention proposes a kind of dynamic virtual camera mapping method, and the method will be connected to the USB shootings on A main frames
Head apparatus, are used by being used as Softcam in network mapping to another B main frame, and keep Softcam and A main frames
On the basic equipment attribute such as title, PID, VID of USB camera equipment it is constant.The method is specifically included：
The communication message transmission channel of persistence is set up between A main frames and B main frames；
B main frames dynamic finds camera device insertion and the event for removing on A main frames；
There is camera device insertion event when A main frames are detected, B main frames obtain the category of USB camera equipment by A main frames
Property, and device name, PID, VID identical Softcam equipment are created in B main frames；
When the camera application module in B main frames opens Softcam equipment, B main frames send video flowing to A main frames
Request message, including video code model parameter；When A main frames receive the video flowing request message of B main frames, will be according to phase
The video code model requirement answered, B main frames are sent to by corresponding USB camera equipment video data；
When A Host Detections are to there is camera device to remove event, A main frames will notify that B main frames delete corresponding virtual shooting
Head apparatus.
Fig. 1 is referred to, the present embodiment specifically includes following steps：
Client in service end and B main frames on step S101, A main frame sets up communication connection.
Specifically include：
Client initialization runs, and according to the address of the service end for configuring, initiates connection request, if successful connection,
Client and service end set up the communication connection of persistence；If it fails to connect, client is attempted repeating hair at regular intervals
Play connection request；
Service end initialization operation, and according to the address of the client for configuring, connection request is initiated, if successful connection,
Client and service end set up the communication connection of persistence；If it fails to connect, service end enters state of intercepting, client is waited
Initiate described connection request.
Step S102, service end detects whether it is connected with USB camera equipment, and camera device is connected with when checking
When, the insertion information of camera device and the attribute information of camera device are sent to client, the attribute information includes
Device name, equipment PID and equipment VID.
Step S103, client receive service end transmission camera device insertion information and attribute information after,
The video that the service end is supported converts form, and merging saves as device descriptive information.Specifically, for example USB camera sets
The video data format of standby support YUV, but service end had both supported that H.264 YUV turned, and also supported that YUV turns MJPG forms, client
MJPG and H.264 video format attribute is added in device descriptive information and is preserved, representing the Softcam equipment can
With provide YUV, H.264 with the video data format of MJPG.
Step S104, client sends the device descriptive information of the camera device, USB to USB virtual bus module
Virtual bus module creates Softcam equipment corresponding with the camera device according to the device descriptive information.
Step S105, camera application module uses USB camera equipment by using the Softcam equipment.
After the completion of Softcam equipment is created, camera application module on B main frames can be using Softcam
Equipment, specifically includes：
The camera application module operated on B main frames opens Softcam equipment by USB device read-write interface, takes the photograph
As head application module will ask the request message of video data to be sent to client, the request by USB virtual bus module
The video format that message includes the attribute information of camera device and asked；
The request message is sent to service end by client, and service end is set after the request message is received by USB
Standby read-write interface reads the video data of corresponding USB camera equipment；
The video data is sent to client, client by service end after receiving the video data of USB camera equipment
End receive the video data after, by video data through USB virtual bus module and Softcam EM equipment module after, be sent to
The camera application module.
The service end decides whether to perform video format conversion according to the video format of client request；If
The video format of the video data that service end is obtained is consistent with the form that client is asked, and service end is directly by the video counts
According to being sent to client；If the video format of the video data for obtaining is inconsistent with the form of request, service end is regarded described
Frequency is then forwarded to client according to after being converted into the form that client is asked.
Step S106, when camera device is removed, service end will notify client and USB virtual bus module according to institute
State the corresponding attribute information of camera device and be automatically deleted corresponding Softcam equipment.
Specifically, when USB camera equipment is removed on A main frames, service end will check USB camera equipment automatically
Removal information, and to the client send the removal information and the corresponding attribute information of the camera device, it is described
Attribute information includes device name, equipment PID and equipment VID；
After client receives the removal information, the removal information and corresponding is sent to USB virtual bus module
The attribute information；
USB virtual bus module is deleted after the removal information and attribute information is received according to the attribute information
Corresponding Softcam equipment.
A kind of dynamic virtual camera mapped system, refers to Fig. 2, and the present embodiment includes server module, client mould
Block, USB virtual bus module, Softcam EM equipment module and camera application module.
Server module is arranged on A main frames, can be detected the insertion of the USB camera equipment on A main frames and be removed thing
Part, and camera device is read and write by USB interface；
Client modules are arranged on B main frames, and setting up communication with server module is connected；
USB virtual bus module is arranged on B main frames, be able to can be created with the operating mechanism of analog physical usb bus
With removal Softcam equipment；
The Softcam module is arranged on B main frames, refers to the device program of camera, comprising Softcam equipment
The driver of read-write interface；
Camera application module is arranged on B main frames, refers to use the application program of the USB camera equipment.
The server module is connected with camera for detecting whether it is connected with USB camera equipment when checking
During equipment, the insertion information of camera device and the attribute information of camera device, the attribute are sent to client modules
Information includes device name, equipment PID and equipment VID；
The client modules are used to receive the insertion information and category of the USB camera equipment of server module transmission
Property information after, by the server module support video convert form, merging save as device descriptive information；And to USB
Virtual bus module sends the insertion information and device descriptive information of the camera device,
The USB virtual bus module is used to be created and the USB camera equipment pair according to the device descriptive information
The Softcam EM equipment module answered.
Further, server module of the present invention and client modules are further included：When removal USB camera equipment
When, server module will notify client modules and USB virtual bus module according to the corresponding attribute letter of the camera device
Breath is automatically deleted corresponding Softcam equipment.Specifically, when USB camera equipment is removed on A main frames, service end mould
Block will automatically check the removal information of USB camera equipment, and send the removal information and institute to the client modules
The corresponding attribute information of camera device is stated, the attribute information includes device name, equipment PID and equipment VID；Client mould
After block receives the removal information, the removal information and the corresponding attribute information are sent to USB virtual bus module；
USB virtual bus module deletes corresponding void after the removal information and attribute information is received according to the attribute information
Intend camera device.
Further, Softcam EM equipment module of the present invention runs on B main frames, there is provided set comprising USB camera
The driver of standby read-write interface, further includes：
The camera application module will ask the request message of video data empty through Softcam EM equipment module and USB
Intend bus module and be sent to client modules, the video that the request message includes the attribute information of camera device and asked
Form；
The request message is sent to server module by client modules, and server module is receiving the request message
Afterwards, the video data of corresponding USB camera equipment is obtained；
The video data is sent to client mould by server module after receiving the video data of USB camera equipment
Block, after client modules receive the video data, by video data through USB virtual bus module and Softcam equipment mould
Block is sent to the camera application module.
The specific embodiment of present invention described above, is not intended to limit the scope of the present invention..Any basis
Various other corresponding change and deformation that technology design of the invention is made, should be included in the guarantor of the claims in the present invention
In the range of shield.
Claims (8)
1. a kind of dynamic virtual camera mapping method, it is characterised in that including：
Step S101, service end and client set up communication connection；
Step S102, service end detects whether it is connected with USB camera equipment, and USB camera equipment is connected with when checking
When, the insertion information of camera device and the attribute information of camera device are sent to client, the attribute information includes
Device name, equipment PID and equipment VID；
Step S103, client will take after the insertion information of camera device of service end transmission and attribute information is received
The video conversion form that business end is supported is added in the attribute information, and merging saves as device descriptive information；
Step S104, client is retouched to the insertion message and the equipment that USB virtual bus module sends the camera device
Information is stated, USB virtual bus module creates virtual shooting corresponding with the camera device according to the device descriptive information
Head apparatus；
Step S105, camera application module uses corresponding USB camera equipment by the Softcam equipment.
2. a kind of dynamic virtual camera mapping method according to claim 1, it is characterised in that methods described is further
Including：
Step S106, when USB camera equipment is removed, service end will notify client and USB virtual bus module according to institute
State the corresponding attribute information of camera device and be automatically deleted corresponding Softcam equipment；Specifically include：
When camera device is removed, service end will automatically check the removal information of USB camera equipment, and to the client
End sends the removal information and the corresponding attribute information of the camera device；
After client receives the removal information, the removal information and corresponding described is sent to USB virtual bus module
Attribute information；
USB virtual bus module deletes correspondence after the removal information and attribute information is received according to the attribute information
Softcam equipment.
3. a kind of dynamic virtual camera mapping method according to claim 1, it is characterised in that the camera application
Module uses corresponding USB camera equipment by the Softcam equipment, specifically includes：
Softcam equipment will ask the request message of video data to be sent to client through USB virtual unit buses, described
The video format that request message includes the attribute information of camera device and asked；
The request message is sent to service end by client, and service end obtains corresponding USB after the request message is received
The video data of camera device；
The video data is sent to client by service end after receiving the video data of USB camera equipment, and client is received
To after the video data, video data is sent to the camera application through USB virtual bus and Softcam equipment
Module.
4. a kind of dynamic virtual camera mapping method according to claim 3, it is characterised in that the service end is received
The video data is sent to client after to the video data of USB camera equipment, is further included：
The service end decides whether to perform video format conversion according to the video format of client request；If service
The video format of the video data that end obtains is consistent with the form that client is asked, and service end is directly by the video data transmitting
It is sent to client；If the video format of the video data for obtaining is inconsistent with the form asked, service end is by the video counts
After the form that client is asked is converted into, client is then forwarded to.
5. a kind of dynamic virtual camera mapping method according to claim 1, it is characterised in that the service end and visitor
Communication connection is set up at family end, is specifically included：
Client initialization runs, and according to the address of the service end for configuring, initiates connection request, if successful connection, client
End and service end set up the communication connection of persistence；If it fails to connect, client is attempted repeating the company of initiation at regular intervals
Connect request；
Service end initialization operation, and according to the address of the client for configuring, initiate connection request, if successful connection, client
End and service end set up the communication connection of persistence；If it fails to connect, service end enters state of intercepting, client is waited to initiate
Described connection request.
6. a kind of dynamic virtual camera mapped system, it is characterised in that virtual including server module, client modules, USB
Bus module and Softcam EM equipment module；
The server module is connected with camera device for detecting whether it is connected with USB camera equipment when checking
When, the insertion information of camera device and the attribute information of camera device, the attribute information are sent to client modules
Including device name, equipment PID and equipment VID；
The client modules are used for after the insertion information of camera device of service end transmission and attribute information is received, and obtain
Take the video conversion form of the service end support and be added in the attribute information, merging saves as device descriptive information；
And the insertion message and the device descriptive information of the camera device are sent to USB virtual bus module；
The USB virtual bus module is used to create corresponding with the USB camera equipment according to the device descriptive information
Softcam EM equipment module.
7. a kind of dynamic virtual camera mapped system according to claim 6, it is characterised in that the server module
Further included with client modules：When USB camera equipment is removed, server module will notify client modules and USB
Virtual bus module is automatically deleted corresponding Softcam equipment according to the corresponding attribute information of the camera device.
8. a kind of dynamic virtual camera mapped system according to claim 6, it is characterised in that the camera application
Module is further included：
The camera application module will ask the request message of video data to be sent to client mould through USB virtual bus modules
Block, the video format that the request message includes the attribute information of camera device and asked；
The request message is sent to server module by client modules, server module after the request message is received,
Obtain the video data of corresponding USB camera equipment；
The video data is sent to client modules by server module after receiving the video data of USB camera equipment,
After client modules receive the video data, video data is sent to the camera application module.
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| CN107544298A (en) * | 2017-06-27 | 2018-01-05 | 新华三云计算技术有限公司 | A kind of camera call method and device |
| CN109756620A (en) * | 2018-12-15 | 2019-05-14 | 深圳壹账通智能科技有限公司 | Softcam recognition methods and relevant device based on mobile phone |
| CN110493203A (en) * | 2019-07-31 | 2019-11-22 | 湖南微算互联信息技术有限公司 | A kind of cloud cell-phone camera head controlling method, system, device and storage medium |
| CN114201249A (en) * | 2020-09-17 | 2022-03-18 | 中兴通讯股份有限公司 | Video equipment redirection method, client, virtual machine desktop and storage medium |
| CN115119003A (en) * | 2022-05-16 | 2022-09-27 | 澳克多普有限公司 | Application method and system of virtual camera in live broadcast room |
| CN116347015A (en) * | 2023-05-26 | 2023-06-27 | 深圳市拔超科技股份有限公司 | System and method for smooth switching based on multiple USB cameras |
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| CN116347015A (en) * | 2023-05-26 | 2023-06-27 | 深圳市拔超科技股份有限公司 | System and method for smooth switching based on multiple USB cameras |
| CN116347015B (en) * | 2023-05-26 | 2023-10-20 | 深圳市拔超科技股份有限公司 | System and method for smooth switching based on multiple USB cameras |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106790612B (en) | 2020-07-31 |
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