CN114610405B - Multi-application screen capturing and network code output method, equipment, medium and product - Google Patents
Multi-application screen capturing and network code output method, equipment, medium and product Download PDFInfo
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- CN114610405B CN114610405B CN202210203035.XA CN202210203035A CN114610405B CN 114610405 B CN114610405 B CN 114610405B CN 202210203035 A CN202210203035 A CN 202210203035A CN 114610405 B CN114610405 B CN 114610405B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000009877 rendering Methods 0.000 claims abstract description 35
- 230000006870 function Effects 0.000 claims description 63
- 238000004590 computer program Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
- G06F9/44521—Dynamic linking or loading; Link editing at or after load time, e.g. Java class loading
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/54—Interprogram communication
- G06F9/543—User-generated data transfer, e.g. clipboards, dynamic data exchange [DDE], object linking and embedding [OLE]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2209/00—Indexing scheme relating to G06F9/00
- G06F2209/54—Indexing scheme relating to G06F9/54
- G06F2209/545—Gui
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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- Digital Computer Display Output (AREA)
Abstract
The invention provides a multi-application screen capturing and network coding output method, which comprises the following steps: designing a dynamic link library, setting permission, selecting a target application, injecting a remote thread, acquiring an image, encoding and compressing, and outputting through a network. The invention relates to an electronic device, a storage medium, and a program product. The method and the device intercept the application interface in a Windows hook mode, then encode and output the intercepted pictures, can be respectively executed for a plurality of application programs, have low cost, simple implementation and deployment, simple maintenance and high efficiency, intercept the application for interface rendering display by adopting a hardware acceleration (GPU), and meet the application requirements.
Description
Technical Field
The invention relates to the technical field of data processing and display, in particular to a multi-application screen capturing and network coding output method, equipment, medium and product.
Background
Along with the continuous promotion of informatization construction of enterprises and public institutions, a large number of business systems and various related application systems are generated in an accelerating way, and meanwhile, the systems also need to be displayed on various display and control platforms of users. The traditional mode is that each system is operated on a computer, and is displayed on a display control platform through a matrix switcher, or a server with very high configuration is selected, a plurality of application systems are operated on the server, an application interface is intercepted through a handle of each application, then encoding is carried out, and the application interface is output to a decoding device through a network for decoding display.
Obviously, the first approach described above is costly and cumbersome to implement and deploy and maintenance. The second mode adopts a GDI mode, has low efficiency, and cannot intercept the application of interface rendering display by adopting a hardware acceleration (GPU). With the development of GPU technology and the rapid improvement of performance, more and more applications adopt GPU to render, and obviously the second mode cannot basically meet the requirements.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a multi-application screen capturing and network coding output method so as to solve the technical problems.
The invention provides a multi-application screen capturing and network coding output method, which comprises the following steps:
designing a dynamic link library, writing the dynamic link library, and creating a drawing rendering function of a programming interface in the dynamic link library;
setting permission, namely setting the multi-application screen capturing and coding software to have breakpoint debugging permission when the multi-application screen capturing and coding software is started;
selecting target applications, and selecting a plurality of target applications to be grabbed on a multi-application screen capturing and coding software operation interface;
injecting a remote thread, injecting a remote thread function into the target application by multi-application screen capturing and coding software, running the thread after the injection is successful, loading the dynamic link library in the thread, and executing an initialization function;
acquiring an image, and running the initializing function by the grabbed target application software to acquire image data;
coding compression is carried out, after the multi-application screen capturing and coding software obtains the image data, the image data is coded and compressed, and the image data is output to third party software or equipment for decoding display through a network;
and outputting through a network, circularly executing the image acquisition step and the encoding compression step, acquiring the interface refreshing image of the grasped application in real time, and outputting through the network.
Further, the step of injecting the remote thread comprises the steps of acquiring a corresponding window handle by multi-application screen capturing and encoding software according to the selected target application name, acquiring a process handle of the selected target application according to the window handle, and injecting a remote thread function to the target application through the process handle.
Further, the step of obtaining the image includes that the dynamic link library is loaded by multi-application screen capturing and coding software to a remote thread function registered by a grabbed target application, a dynamic link library initialization interface is called in the thread function after loading, an original programming interface drawing rendering function address of the target application software is firstly obtained and stored in the initialization function, then the original programming interface drawing rendering function address of the target application software is replaced by the programming interface drawing rendering function address in the dynamic link library, the grabbed target application software calls a programming interface drawing rendering function in the dynamic link library when the interface is refreshed, the obtained image texture is copied into a temporary memory in the drawing rendering function, and finally the drawing rendering function of the original programming interface is called through the drawing rendering function address of the original programming interface stored previously, so that the image is obtained.
Further, in the step of obtaining the image, the drawing rendering function of the dynamic link library copies the obtained image texture to the temporary memory, and simultaneously notifies the multi-application screen capturing and encoding software to obtain the image data in the temporary memory.
Further, the dynamic link library is a DLL dynamic link library.
Further, the programming interfaces include a DirectX multimedia programming interface, a GDI graphics device interface, an OpenGL programming interface.
Further, in the step of designing the dynamic link library, the interface parameters of the drawing rendering function are consistent with the function parameters of the programming interface.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing a multi-application screen capture and network code output method.
A computer readable storage medium having stored thereon a computer program for execution by a processor of a multi-application screen capture and network code output method.
A computer program product comprising computer programs/instructions which when executed by a processor implement a multi-application screen capture and network coding output method.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a multi-application screen capturing and network coding output method, which comprises the following steps: designing a dynamic link library, setting permission, selecting a target application, injecting a remote thread, acquiring an image, encoding and compressing, and outputting through a network. The method and the device intercept the application interface in a Windows hook mode, then encode and output the intercepted pictures, can be respectively executed for a plurality of application programs, have low cost, simple implementation and deployment, simple maintenance and high efficiency, intercept the application for interface rendering display by adopting a hardware acceleration (GPU), and meet the application requirements.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a multi-application screen capturing and network code output method of the present invention;
fig. 2 is a flowchart of an application screen capturing and network code output method according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
A multi-application screen capturing and network coding output method, as shown in figures 1 and 2, comprises the following steps:
designing a dynamic link library, writing the dynamic link library, and creating a drawing rendering function of a programming interface in the dynamic link library; in this embodiment, the dynamic link library is a DLL dynamic link library, and multiple programs depend on the same shared object file, where the shared object file is only one in the disk and the memory, and no copy is generated. The dynamic link mode enables each module to be independent in the development process, the coupling degree is smaller, and independent development and testing between different developers and development organizations are facilitated.
The programming interfaces comprise a DirectX multimedia programming interface, a GDI graphic device interface and an OpenGL programming interface, and only the functions related to the DLL dynamic link library are modified to be matched with the corresponding programming interfaces. The DirectX multimedia programming interface has wide application, provides a complete set of multimedia interface schemes, and has excellent performance in the aspect of 3D graphics. The GDI graphic device interface is a general window system graphic programming interface, and has strong functions and wide range. The OPENGL programming interface has super-strong functions, simple interface and extremely high operation efficiency drawing effect.
In the step of designing the dynamic link library, the interface parameters of the drawing rendering function and the function parameters of the programming interface are kept consistent, namely the function is reconstructed. Such as: and realizing a drawing rendering function Present of the DirectX multimedia programming interface in the dynamic link library, wherein the interface parameters of the drawing rendering function Present are consistent with the function parameters of the DirectX, and the drawing rendering function Present is understood to reconstruct the function.
Setting permission, namely setting the multi-application screen capturing and encoding software to have breakpoint debugging SeDebug permission when the multi-application screen capturing and encoding software are started;
selecting target applications, and selecting a plurality of target applications to be grabbed on a multi-application screen capturing and coding software operation interface;
and injecting a remote thread, injecting remote thread functions into the target application by the multi-application screen capturing and coding software, running the thread after the injection is successful, loading a dynamic link library in the thread, and executing an initialization function. Specifically, the multi-application screen capturing and encoding software obtains a corresponding window handle according to the selected target application name, obtains a process handle of the selected target application according to the window handle, injects a remote thread function into the target application through the process handle, runs the thread after the injection is successful, loads a DLL dynamic link library in the thread, and executes an initialization function.
And acquiring an image, and running an initialization function by the grabbed target application software to acquire image data. Specifically, the dynamic link library is loaded by multi-application screen capturing and coding software to a remote thread function registered by a grabbed target application, a dynamic link library initialization interface is called in the thread function after loading, the original programming interface drawing and rendering function address of the target application software is firstly obtained and stored in the initialization function of the DLL dynamic link library, then the original programming interface drawing and rendering function address of the target application software is replaced by the programming interface drawing and rendering function address of the dynamic link library, the grabbed target application software program calls the programming interface drawing and rendering function in the dynamic link library when the interface is refreshed after the operation, the obtained image texture is copied to a temporary memory in the drawing and rendering function, and finally the drawing and rendering function of the original programming interface is called through the drawing and rendering function address of the original programming interface which is stored previously, so that an image is obtained.
And when the drawing rendering function of the dynamic link library copies the acquired image textures to the temporary memory, notifying the multi-application screen capturing and encoding software to acquire the image data in the temporary memory.
Coding compression is carried out, after the multi-application screen capturing and coding software obtains the image data, the image data is coded and compressed, and the image data is output to third party software or equipment for decoding display through a network;
and outputting through a network, circularly executing the steps of acquiring the image and encoding and compressing, acquiring the interface refreshing image of the grasped application in real time, and outputting through the network.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing a multi-application screen capture and network code output method.
A computer readable storage medium having stored thereon a computer program for execution by a processor of a multi-application screen capture and network code output method.
A computer program product comprising computer programs/instructions which when executed by a processor implement a multi-application screen capture and network coding output method.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art can smoothly practice the invention as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (9)
1. The multi-application screen capturing and network coding output method is characterized by comprising the following steps of:
designing a dynamic link library, writing the dynamic link library, and creating a drawing rendering function of a programming interface in the dynamic link library;
setting permission, namely setting the multi-application screen capturing and coding software to have breakpoint debugging permission when the multi-application screen capturing and coding software is started;
selecting target applications, and selecting a plurality of target applications to be grabbed on a multi-application screen capturing and coding software operation interface;
injecting a remote thread, injecting a remote thread function into the target application by multi-application screen capturing and coding software, running the thread after the injection is successful, loading the dynamic link library in the thread, and executing an initialization function;
acquiring an image, and running the initializing function by the grabbed target application software to acquire image data;
coding compression is carried out, after the multi-application screen capturing and coding software obtains the image data, the image data is coded and compressed, and the image data is output to third party software or equipment for decoding display through a network;
and outputting through a network, circularly executing the image acquisition step and the encoding compression step, acquiring the interface refreshing image of the grasped application in real time, and outputting through the network.
2. The multi-application screen capturing and network coding output method of claim 1, wherein: the step of injecting the remote thread comprises the steps of acquiring a corresponding window handle by multi-application screen capturing and encoding software according to the selected target application name, acquiring a process handle of the selected target application according to the window handle, and injecting a remote thread function into the target application through the process handle.
3. The multi-application screen capturing and network coding output method of claim 1, wherein: the step of acquiring the image comprises the steps that the dynamic link library is loaded to a remote thread function registered by a grabbed target application by multi-application screen capturing and coding software, a dynamic link library initialization interface is called in the thread function after loading, the original programming interface drawing and rendering function address of the target application software is firstly acquired and stored in the initialization function, then the programming interface drawing and rendering function address of the target application software is replaced by the programming interface drawing and rendering function address of the dynamic link library, the grabbed target application software program calls the programming interface drawing and rendering function in the dynamic link library when the interface is refreshed, the acquired image texture is copied to a temporary memory in the drawing and rendering function of the original programming interface is called through the drawing and rendering function address of the original programming interface which is stored previously, and the image is acquired.
4. A multi-application screen capture and network code output method as claimed in claim 3 wherein: in the step of acquiring the image, the drawing rendering function of the dynamic link library copies the acquired image texture to a temporary memory, and simultaneously notifies the multi-application screen capturing and encoding software to acquire image data in the temporary memory.
5. The multi-application screen capturing and network coding output method of claim 1, wherein: the dynamic link library is a DLL dynamic link library.
6. The multi-application screen capturing and network coding output method of claim 5, wherein: the programming interfaces comprise a DirectX multimedia programming interface, a GDI graphic device interface and an OpenGL programming interface.
7. The multi-application screen capturing and network coding output method of claim 6, wherein: in the step of designing the dynamic link library, the interface parameters of the drawing rendering function are consistent with the function parameters of the programming interface.
8. An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by a processor, the program comprising instructions for performing the method of any of claims 1-7.
9. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program being adapted to be executed by a processor to perform the method of any of claims 1-7.
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