CN102984500A - Method and device and system for achieving compatibility among multiple video monitor equipment - Google Patents
Method and device and system for achieving compatibility among multiple video monitor equipment Download PDFInfo
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Abstract
The invention is applied to the field of video monitors and particularly relates to a method, a device and a system for achieving compatibility among multiple video monitor equipment. When the method, the device and the system for achieving the compatibility among the multiple video monitor equipment are carried out, the method includes that operating orders sent by users are received, the operating orders are sent to sub-processes corresponding to the video monitor equipment through a uniform interface of a host process according to equipment types which are corresponding to the operating orders, the sub-processes are provided with interfaces corresponding with the uniform interface, and when the sub-processes do not normally respond to the operating orders, the sub-processes are reset to continue to send the operating orders to the sub-progresses. The method guaranteed the stability of a video monitor system when a software development kit (SDK) provided by a manufacturer producing the video monitor is abnormal. Due to the fact that each sub-process corresponding to each monitor device is provided with the interface corresponding to the uniform interface, when another monitor device is added, only the SDK is needed to be added with a corresponding sub-process, and therefore strong independency and good expansibility of the video monitor system are guaranteed.
Description
Technical field
The invention belongs to field of video monitoring, relate in particular to a kind of methods, devices and systems of realizing various video watch-dog compatibility.
Background technology
Video monitoring system is the stronger integrated system of a kind of prevention ability, also is the important component part of safety and protection system.Video monitoring system is directly perceived with it, accurately, in time and the information content abundant and be widely used in many occasions.In recent years, along with domestic demand to video monitoring constantly increases, video equipment production firm also constantly increases, yet, because the security protection industry development time is shorter, not yet form perfect industry standard.Each video equipment production firm basis separately development of enterprise has been formulated separately corresponding company standard, and has formed thus different SDK (Software Development Kit, SDK).So-called SDK, be by video equipment production firm provide, realization and the interface of device talk and the interface of realization equipment video stream encoding and decoding.Because the SDK that video equipment production firm provides is different, even also there is very big-difference in same video equipment production firm at its SDK of series of products of the exploitation of different times, and the phenomenon that the SDK that this video equipment production firm provides " does things in his own way " is that the equipment access of video monitoring system has brought huge challenge.For example, the user has purchased the video equipment of different brands at different times, and therefore, the video equipment that how to use the video equipment production firm of the compatible different SDK of identical video monitoring system to provide becomes industry and needs one of problem of solution badly.
For the problems referred to above, a kind of method that prior art provides is that the SDK that video equipment production firm provides is carried out secondary encapsulation, forms the unified plug-in unit of interface.The video monitoring system client is when mutual with the headend equipment of video monitoring system, and its host process realizes compatibility to these video equipments by the mode of calling plug-in unit.
Because plug-in unit is suitable with dynamic link library file in essence, therefore, the method defective that above-mentioned prior art provides is: along with the increase of video equipment kind, load time constantly increases, and because the SDK that provides of different video device fabrication manufacturer stable inconsistent, when gross error appears in certain SDK, cause easily the program of whole video monitoring system client unstable.
Summary of the invention
The object of the present invention is to provide a kind of methods, devices and systems of realizing the various video hardware compatibility, the SDK that being intended to solve prior art provides because of video equipment production firm makes mistakes the video monitoring system client-side program is caused unsettled problem.
The present invention is achieved in that a kind of method that realizes various video watch-dog compatibility, and described method comprises:
Receive the operational order that the user sends;
The device type corresponding according to described operational order, the unified interface by host process sends described operational order to the subprocess corresponding with video monitoring equipment, and described subprocess possesses the interface corresponding with described unified interface;
If described subprocess does not have normal response to described operational order, then described subprocess is restarted in order to continue and send described operational order to described subprocess.
Another object of the present invention is to provide a kind of device of realizing various video watch-dog compatibility, described device comprises the host process module, and described host process module comprises the reception submodule, sends submodule and control submodule;
Described reception submodule is used for receiving the operational order that the user sends;
Described transmission submodule is used for the device type corresponding according to described operational order, and the unified interface by host process sends described operational order to the subprocess corresponding with video monitoring equipment, and described subprocess possesses the interface corresponding with described unified interface;
Described control submodule does not have normal response if be used for described subprocess to described operational order, then described subprocess is restarted in order to continue to send described operational order to described subprocess.
Another object of the present invention is to provide a kind of system that realizes various video watch-dog compatibility, described system comprises video front-end equipment and control appliance, and described control appliance comprises host process module and subprocess module;
Described video front-end equipment is for video data being processed and result being returned described subprocess module;
Described host process module, be used for receiving the operational order that the user sends, the device type corresponding according to described operational order, unified interface by host process sends described operational order to the subprocess corresponding with video monitoring equipment, if described subprocess does not have normal response to described operational order, then described subprocess is restarted in order to continue to send described operational order to described subprocess, described subprocess possesses the interface corresponding with described unified interface;
Described subprocess module is used for receiving described host process module to the operational order that the subprocess corresponding with video monitoring equipment sends, and communicates to obtain the result that described video front-end equipment is processed video data with described video front-end equipment.
From the invention described above embodiment as can be known, on the one hand, when the operational order that the unified interface by host process is sent to these subprocesss at subprocess does not have normal response, subprocess can be restarted in order to continue to subprocess transmit operation instruction, therefore, carrying out secondary encapsulation with SDK that prior art provides video equipment production firm forms the unified plug-in unit of interface and compares, the SDK that the method that the embodiment of the invention provides provides in video equipment production firm occurs when unusual, can't affect the normal operation of client host process, guarantee the stability of video monitoring system; On the other hand, because subprocess corresponding to each video equipment possesses the interface corresponding with the unified interface of host process, therefore, during newly-increased video equipment, only need to increase corresponding subprocess according to SDK, need not to revise host process, thereby guaranteed independence that video monitoring system is stronger and good autgmentability.
Description of drawings
Fig. 1 is the method flow schematic diagram of the realization various video hardware compatibility that provides of first embodiment of the invention;
Fig. 2 is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of first embodiment of the invention;
Fig. 3 is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 4 is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 5 is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-a is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-b is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-c is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-d is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-e is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-f is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-g is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 6-h is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention;
Fig. 7-a is the system configuration schematic diagram of the realization various video hardware compatibility that provides of first embodiment of the invention;
Fig. 7-b is the system architecture schematic diagram of the realization various video hardware compatibility that provides of another embodiment of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 shows the method flow schematic diagram of the realization various video hardware compatibility that first embodiment of the invention provides, and comprises step S101, step S102 and step S103, and details are as follows:
Step S101 receives the operational order that the user sends.
In embodiments of the present invention, host process provides man-machine interface, receives the operational order that the user sends by this interface, certain operation that this operational order realization is carried out video equipment.For example, the user need to carry out the parameter setting to certain video equipment, and then host process receives the parameter setting instruction that the user sends; And for example, the user wants to receive the warning message of certain video equipment, and then host process receives the audiomonitor instruction that the user sends.
Step S102, the device type corresponding according to this operational order, the unified interface by host process is to the subprocess transmit operation instruction corresponding with video equipment, and this subprocess possesses the interface corresponding with this unified interface.
To carry out secondary encapsulation different from SDK that prior art provides video equipment production firm, and in embodiments of the present invention, host process has a unified interface.The SDK that provides for each video equipment production firm, develop corresponding subprocess, these subprocesss all possess the interface corresponding with the unified interface of host process, so that host process is during simultaneously with a plurality of subprocess communication, host process is called subprocess by this interface.Because a video equipment correspondence is by a sub-management of process, and host process has a unified interface, therefore, the method that provides according to the embodiment of the invention, when newly-increased video equipment, only need to increase corresponding subprocess according to SDK, need not to revise host process, so, independence and the autgmentability of video monitoring system have been guaranteed.
Because subprocess may not be in starting state constantly, transmission for fear of the invalid operation instruction, in embodiments of the present invention, unified interface by host process is before the subprocess transmit operation instruction corresponding with video equipment, can judge further whether this subprocess starts, before this, need also to judge that subprocess has not registering to host process, if do not register, then the promoter process.If subprocess starts, then directly to this subprocess transmit operation instruction, if subprocess is not activated, then start this subprocess after, again to this subprocess transmit operation instruction.Because after subprocess starts, can to the host process registration and send heartbeat message because of.Therefore, in embodiments of the present invention, if after host process a period of time do not receive normal heartbeat message, judge that then this subprocess still is not activated or dies, thereby should carry out the operation of restarting subprocess.
Step S103 if this subprocess does not have normal response to operational order, is then restarted this subprocess in order to continue to this subprocess transmit operation instruction.
Owing to the SDK poor compatibility that provides of video equipment production firm, easily make mistakes, in the short time frequently the calling of subprocess, a large amount of concurrent operations and video equipments are moved for a long time, subprocess may not can carry out normal response to the operational order that sends.In embodiments of the present invention, unified interface by host process is after the subprocess transmit operation instruction corresponding with video equipment, can judge further that subprocess is to operational order normal response whether, concrete grammar is: be normal feedback information if subprocess returns operational order, for example, confirm (ACKnowledge, ACK) information etc., judge that then subprocess is to this operational order normal response, if that subprocess returns is non-affirmation (Non-ACKnowledge, NACK) information or do not return any information judges that then this subprocess does not have normal response to this operational order, and this subprocess is in abnormality.
If subprocess does not have normal response to sending instruction, then this subprocess is restarted, in order to continue to this subprocess transmit operation instruction.From prior art SDK being carried out secondary encapsulation, to form the unified plug-in unit of interface different, in embodiments of the present invention, the subprocess that develops according to SDK is executable program, therefore, even subprocess can not normal response to sending instruction, can provide the prompting of restarting subprocess, unlikely host process to client operation causes unstable even causes the collapse of whole system.
Because video monitoring system is different from common application software, but in the higher system of requirement of real-time, customer requirements can view as early as possible realtime graphic or receive warning message etc., therefore, after if repeatedly (number of times can be set according to user's needs) restarts this subprocess, this subprocess still can not carry out normal response to operational order, then computer or the computer system of operation host process and subprocess is restarted.
Need to prove, after host process starts, can to will be with it the subprocess of communication manage, comprise that the life cycle to subprocess manages, for example when should the promoter process, and regularly detect the state of subprocess, in order to when the program end of run, close subprocess, etc.
From the method for above-mentioned realization various video hardware compatibility as can be known, on the one hand, when the operational order that the unified interface by host process is sent to these subprocesss at subprocess does not have normal response, subprocess can be restarted in order to continue to subprocess transmit operation instruction, therefore, carrying out secondary encapsulation with SDK that prior art provides video equipment production firm forms the unified plug-in unit of interface and compares, the SDK that the method that the embodiment of the invention provides provides in video equipment production firm occurs when unusual, can't affect the normal operation of client host process, guarantee the stability of video monitoring system; On the other hand, because subprocess corresponding to each video equipment possesses the interface corresponding with the unified interface of host process, therefore, during newly-increased video equipment, only need to increase corresponding subprocess according to SDK, need not to revise host process, thereby guaranteed independence that video monitoring system is stronger and good autgmentability.
For the method for the realization various video watch-dog compatibility that the embodiment of the invention provides clearly is described, below provide two specific embodiments.
Embodiment one:
S1, the interface that the user provides by the client host process sends parameter setting instruction so that certain video equipment is carried out the parameter setting, and host process receives this parameter setting instruction;
S2, whether host process detects subprocess corresponding to this video equipment and starts, and does not then start this subprocess if start;
S3, if corresponding subprocess starts, host process then sends parameter setting instruction to this subprocess;
After S3, subprocess may not this parameter setting instruction of normal response, its possible reason comprises: the SDK poor compatibility that video equipment production firm provides, easily makes mistakes, in the short time frequently the calling of subprocess, a large amount of concurrent operations and video equipments moved for a long time, etc.
S4, if subprocess can not the normal response parameter setting instruction, then host process is restarted this subprocess, and again sends parameter setting instruction;
S5, if subprocess is accepted correct parameters behind the parameter setting instruction, and return normal, complete operation then.
Embodiment two:
S ' 1, and the interface that the user provides by the client host process sends the audiomonitor instruction to receive the warning message of certain video equipment, and host process receives this audiomonitor instruction;
S ' 2, and whether host process detects subprocess corresponding to this video equipment and start, and then do not start this subprocess if start;
S ' 3, if corresponding subprocess starts, host process then sends the audiomonitor instruction to this subprocess;
S ' 4, and after subprocess received the audiomonitor instruction, the information that AM automatic monitoring equipment reports saw if there is warning message and reports, and sent normal information to host process;
S ' 5, if a period of time fails normally to receive the information that reports that subprocess sends abnormal information to host process;
S ' 6, and host process is received abnormal information, restart this subprocess;
S ' 7, still receive abnormal information after host process continuous several times (number of times can in the light of actual conditions arrange) is restarted subprocess, then restart computer.
Computer refers to move the computer system of host process and subprocess herein, because the particularity of video monitoring system, it or not common application software, for having relatively high expectations of real-time, if just send error reporting, finally can't accept warning message, may bring larger loss to the user, so preferably adopt the mode of restarting computer, as early as possible answering system operation.
Seeing also accompanying drawing 2, is the apparatus structure schematic diagram of the realization various video hardware compatibility that provides of first embodiment of the invention.For convenience of explanation, only show the part relevant with the embodiment of the invention.The device of the realization various video hardware compatibility of accompanying drawing 2 examples comprises host process module 21, and host process module 21 comprises reception submodule 211, sends submodule 212 and control submodule 213, wherein:
Receive submodule 211, be used for receiving the operational order that the user sends;
Send submodule 212, be used for the device type corresponding according to this operational order, the unified interface by host process sends this operational order to the subprocess corresponding with video equipment, and subprocess possesses the interface corresponding with this unified interface;
Need to prove, more than in the execution mode of the device of realization various video hardware compatibility, the division of each functional module only illustrates, can be as required in the practical application, for example the facility of the configuration requirement of corresponding hardware or software implemented is considered, finished by different functional modules and above-mentioned functions distributed, to be about to realize that the internal structure of the device of various video hardware compatibility is divided into different functional modules, to finish all or part of function described above.And, in the practical application, corresponding functional module in the present embodiment can be to be realized by corresponding hardware, also can be finished by the corresponding software of corresponding hardware implement, for example, aforesaid reception submodule can be the hardware with operational order of carrying out aforementioned reception user transmission, receiver for example, thus also can be to carry out general processor or other hardware devices that the corresponding computer program is finished aforementioned functional; For another example aforesaid transmission submodule, can be to have the aforementioned device type corresponding according to operational order of execution, send the hardware of this operational order function to the subprocess corresponding with video equipment by the unified interface of host process, transmitter for example, thus also can be to carry out general processor or other hardware devices (each embodiment that this specification provides can use the foregoing description principle) that the corresponding computer program is finished aforementioned functional.
The host process module 21 of accompanying drawing 2 examples comprises that further first judges submodule 301, as shown in Figure 3, and the device of the realization various video hardware compatibility that another embodiment of the present invention provides.First judges that submodule 301 is used for judging that subprocess is to operational order normal response whether.
First of accompanying drawing 3 examples judge that submodule 301 comprises the first judging unit 401, as shown in Figure 4, and the device of the realization various video hardware compatibility that another embodiment of the present invention provides.If the first judging unit 401 is used for subprocess operational order is returned normal feedback information, for example, ACK information judges that then this subprocess is to this operational order normal response.
The host process module 21 of accompanying drawing 2 examples also may further include second and judges submodule 501 and promoter module 502, as shown in Figure 5, and the device of the realization various video hardware compatibility that another embodiment of the present invention provides, wherein:
Second judges submodule 501, is used for judging whether subprocess starts;
Accompanying drawing 2 to the host process module 21 of accompanying drawing 5 arbitrary examples also may further include management submodule 601, such as accompanying drawing 6-a to shown in the accompanying drawing 6-d, the device of the realization various video hardware compatibility that another embodiment of the present invention provides.Management submodule 601 is used for after host process starts subprocess being managed, and comprises that the life cycle to subprocess manages, for example when should the promoter process, and regularly detect the state of subprocess, in order to when the program end of run, close subprocess, etc.
Accompanying drawing 2 to the device of accompanying drawing 5 arbitrary examples also may further include subprocess module 602, such as accompanying drawing 6-e to shown in the accompanying drawing 6-h, the device of the realization various video hardware compatibility that another embodiment of the present invention provides, subprocess module 602 is used for receiving and sends the operational order that submodule sends to the subprocess corresponding with video equipment, and sends to host process module 21 etc. with look closely the data that equipment frequently obtains in the past.
Seeing also accompanying drawing 7-a, is the system configuration schematic diagram of the realization various video hardware compatibility that provides of first embodiment of the invention.For convenience of explanation, only show the part relevant with the embodiment of the invention.The system of the realization various video hardware compatibility of accompanying drawing 7-a example comprises video front-end equipment 71 and control appliance 72, and control appliance 72 comprises host process module 721 and subprocess module 722, wherein:
Video front-end equipment 71 is for video data being processed and result being returned the subprocess module;
Accompanying drawing 7-b shows the connection diagram of system of the realization various video hardware compatibility of accompanying drawing 7-a example, and control appliance 72 and various video headend equipment 71 are by network connection, and host process module 721 is mutual by unified interface and subprocess module 722.
One of ordinary skill in the art will appreciate that all or part of step in the whole bag of tricks of above-described embodiment is to come the relevant hardware of instruction finish by program, this program can be stored in the computer-readable recording medium, storage medium can comprise: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), disk or CD etc.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method that realizes the various video hardware compatibility is characterized in that, described method comprises:
Receive the operational order that the user sends;
The device type corresponding according to described operational order, the unified interface by host process sends described operational order to the subprocess corresponding with video equipment, and described subprocess possesses the interface corresponding with described unified interface;
If described subprocess does not have normal response to described operational order, then described subprocess is restarted in order to continue and send described operational order to described subprocess.
2. the method for claim 1 is characterized in that, described unified interface by host process further comprises after the subprocess corresponding with video equipment sends described operational order:
Judge that described subprocess is to described operational order normal response whether.
3. method as claimed in claim 2, it is characterized in that, describedly judge whether normal response is described subprocess to described operational order: if described subprocess returns normal feedback information to described operational order, judge that then described subprocess is to described operational order normal response.
4. the method for claim 1 is characterized in that, described unified interface by host process further comprised before the subprocess corresponding with video equipment sends described operational order:
Judge whether described subprocess starts;
If described subprocess is not activated, then start described subprocess.
5. such as the described method of claim 1 to 4 any one, it is characterized in that described method also comprises:
After described host process starts, described subprocess is managed.
6. a device of realizing the various video hardware compatibility is characterized in that, described device comprises the host process module, and described host process module comprises the reception submodule, sends submodule and control submodule;
Described reception submodule is used for receiving the operational order that the user sends;
Described transmission submodule is used for the device type corresponding according to described operational order, and the unified interface by host process sends described operational order to the subprocess corresponding with video equipment, and described subprocess possesses the interface corresponding with described unified interface;
Described control submodule does not have normal response if be used for described subprocess to described operational order, then described subprocess is restarted in order to continue to send described operational order to described subprocess.
7. device as claimed in claim 6 is characterized in that, described host process module further comprises:
First judges submodule, is used for judging that described subprocess is to described operational order normal response whether; Perhaps,
Described host process module further comprises:
Second judges submodule, is used for judging whether described subprocess starts;
The promoter module is not activated if be used for described subprocess, then starts described subprocess.
8. device as claimed in claim 7 is characterized in that, described first judges that submodule comprises:
The first judging unit returns normal feedback information if be used for described subprocess to described operational order, judges that then described subprocess is to described operational order normal response.
9. such as the described device of claim 6 to 8 any one, it is characterized in that described device also comprises the subprocess module, be used for receiving the operational order that described transmission submodule sends to the subprocess corresponding with video equipment; Described host process module also comprises the management submodule, is used for after described host process starts described subprocess being managed.
10. a system that realizes the various video hardware compatibility is characterized in that, described system comprises video front-end equipment and control appliance, and described control appliance comprises host process module and subprocess module;
Described video front-end equipment is for video data being processed and result being returned described subprocess module;
Described host process module, be used for receiving the operational order that the user sends, the device type corresponding according to described operational order, unified interface by host process sends described operational order to the subprocess corresponding with video equipment, if described subprocess does not have normal response to described operational order, then described subprocess is restarted in order to continue to send described operational order to described subprocess, described subprocess possesses the interface corresponding with described unified interface;
Described subprocess module is used for receiving described host process module to the operational order that the subprocess corresponding with video equipment sends, and communicates to obtain the result that described video front-end equipment is processed video data with described video front-end equipment.
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