CN112423101B - Remote display method, device, equipment and computer readable storage medium - Google Patents
Remote display method, device, equipment and computer readable storage medium Download PDFInfo
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- CN112423101B CN112423101B CN202011236908.4A CN202011236908A CN112423101B CN 112423101 B CN112423101 B CN 112423101B CN 202011236908 A CN202011236908 A CN 202011236908A CN 112423101 B CN112423101 B CN 112423101B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing 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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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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
- G06F9/547—Remote procedure calls [RPC]; Web services
Abstract
The invention discloses a remote display method, a device, equipment and a computer readable storage medium, wherein the method comprises the following steps: when a remote display request is received, determining a target file window corresponding to the remote display request based on the remote display request; acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer corresponding to the target file window based on the target window handle; and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface. The invention realizes the remote display of video data and solves the technical problem that the prior information publishing and displaying system can not carry out remote publishing and displaying.
Description
Technical Field
The present invention relates to the field of remote display technologies, and in particular, to a remote display method, apparatus, device, and computer-readable storage medium.
Background
The prior information issuing and displaying system is generally characterized in that an information processor (a computer or other terminal equipment) is directly connected with a displaying terminal for displaying, and the information processor and the displaying terminal are in one-to-one connection in the mode, but the mode is only suitable for short-distance information issuing and displaying and cannot perform remote issuing and displaying.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a remote display method, a remote display device, a remote display equipment and a computer readable storage medium, and aims to solve the technical problem that the existing information publishing and displaying system cannot perform remote publishing and displaying.
In order to achieve the above object, the present invention provides a remote display method, which is applied to an information distribution system, the information distribution system is in communication connection with a display terminal, the display terminal is connected with a large screen display through an HDMI interface, and the remote display method includes the following steps:
when a remote display request is received, determining a target file window corresponding to the remote display request based on the remote display request;
acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer corresponding to the target file window based on the target window handle;
and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface.
Optionally, the step of acquiring, based on the target window handle, video data corresponding to the target file window from a background display buffer corresponding to the target file window includes:
determining a background display buffer area corresponding to the target file window based on the target window handle, and creating a capture frame pool;
and acquiring each frame of pixel image corresponding to the video data in a background display buffer area corresponding to the target file window, and storing the pixel image to the capture frame pool for reading the pixel image in the capture frame pool.
Optionally, the step of sending the video data to the display terminal so that the display terminal displays the video data to the large screen display through an HDMI interface includes:
encoding the pixel image to encode the pixel image into a video stream with a preset format;
and sending the video stream to the display terminal through an IP network so that the display terminal decodes the video stream to obtain the pixel image when receiving the video stream, and displaying the video data to the large screen display through an HDMI interface based on the pixel image.
Optionally, before the step of determining, when a remote display request is received, a target file window corresponding to the remote display request based on the remote display request, the method further includes:
when a preset file is started, displaying the preset file in a file window;
and acquiring a currently opened file window, and displaying a thumbnail window corresponding to the file window on the information issuing system when a remote display control instruction is received so as to trigger the remote display request based on the thumbnail window.
Optionally, after the step of sending the video data to the display terminal so that the display terminal displays the video data to the large screen display through an HDMI interface, the method further includes:
when a remote operation control instruction sent by the display terminal is received, determining a target file window corresponding to the remote operation control instruction, and executing remote control operation corresponding to the remote operation control instruction on the target file window corresponding to the remote operation control instruction;
and the remote operation control instruction is input by the display terminal through a keyboard and/or a mouse.
Optionally, when a remote display request is received, the step of determining, based on the remote display request, a target file window corresponding to the remote display request includes:
when a preset file is started, displaying the preset file in a file window;
determining a currently opened file window, and acquiring a window handle corresponding to the file window;
and based on the window handle, acquiring a single-frame pixel image corresponding to the file window from a background display buffer area, and sending the single-frame pixel image to the display terminal so that the display terminal can display the single-frame pixel image to a thumbnail window when receiving a remote display instruction.
Optionally, when the remote display request is sent by the display terminal, and when a remote display request is received, the step of determining, based on the remote display request, a target file window corresponding to the remote display request includes:
when a remote display request sent by the display terminal is received, determining a target file window corresponding to the remote display request based on a file window identifier in the remote display request, wherein the remote display request carries the file window identifier.
In addition, to achieve the above object, the present invention also provides a remote display apparatus, including:
the determining module is used for determining a target file window corresponding to a remote display request based on the remote display request when the remote display request is received;
the acquisition module is used for acquiring a target window handle corresponding to the target file window and acquiring video data corresponding to the target file window from a background display buffer zone corresponding to the target file window based on the target window handle;
and the sending module is used for sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through the HDMI interface.
In addition, to achieve the above object, the present invention also provides a remote display apparatus, including: a memory, a processor and a remote presentation program stored on the memory and executable on the processor, the remote presentation program when executed by the processor implementing the steps of the remote presentation method as described above.
In addition, to achieve the above object, the present invention also provides a computer readable storage medium, on which a remote exhibition program is stored, and the remote exhibition program realizes the steps of the remote exhibition method as described above when executed by a processor.
According to the method, when a remote display request is received, a target file window corresponding to the remote display request is determined based on the remote display request; acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer corresponding to the target file window based on the target window handle; and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface. In this embodiment, when the information distribution system receives a remote display request, a target file window indicated by the remote display request is determined in a plurality of currently opened file windows, then a target window handle corresponding to the target file window is obtained, video data displayed on the target file window is obtained in a background display buffer area based on the target window handle, and then the video data is sent to the display terminal so that the display terminal can receive the video data and display the video data on the large-screen display. Therefore, the invention realizes the remote display of the video data by directly acquiring the video data corresponding to the file window and displaying the video data on the large-screen display through the display terminal, solves the technical problem that the existing information publishing and displaying system can not carry out remote publishing and displaying, and can also publish the contents of documents, pictures or web pages and the like in any format through the information publishing system and the display terminal because the files displayed in the file window can be in different formats.
Drawings
FIG. 1 is a schematic diagram of a remote display device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a remote display method according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a remote display method according to a second embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a remote display device of a hardware operating environment according to an embodiment of the present invention.
The remote display device in the embodiment of the present invention may be a PC, or may be a mobile terminal device having a display function, such as a smart phone, a tablet computer, an electronic book reader, an MP3 (Moving Picture Experts Group Audio Layer III, motion video Experts compression standard Audio Layer 3) player, an MP4 (Moving Picture Experts Group Audio Layer IV, motion video Experts compression standard Audio Layer 4) player, a portable computer, or the like.
As shown in fig. 1, the remote presentation apparatus may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Optionally, the remote display device may further include a camera, RF (Radio Frequency) circuitry, sensors, audio circuitry, a WiFi module, and so forth. Such as light sensors, motion sensors, and other sensors, among others. In particular, the light sensor may include an ambient light sensor that adjusts the brightness of the display screen based on the intensity of ambient light, and a proximity sensor that turns off the display screen and/or backlight when the remote display device is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when the device is stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration) for recognizing the attitude of the remote display device, and related functions (such as pedometer and tapping) for vibration recognition; of course, the remote display device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein again.
Those skilled in the art will appreciate that the remote display device configuration illustrated in FIG. 1 does not constitute a limitation of the remote display device and may include more or fewer components than those illustrated, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a remote presentation program.
In the remote display device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and communicating data with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be used to invoke a remote presentation program stored in the memory 1005.
In this embodiment, the remote display apparatus includes: a memory 1005, a processor 1001 and a remote presentation program stored on the memory 1005 and executable on the processor 1001, wherein the processor 1001 calls the remote presentation program stored in the memory 1005 and executes the following operations:
when a remote display request is received, determining a target file window corresponding to the remote display request based on the remote display request;
acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer corresponding to the target file window based on the target window handle;
and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface.
Further, the processor 1001 may call the remote presentation program stored in the memory 1005, and also perform the following operations:
determining a background display buffer area corresponding to the target file window based on the target window handle, and creating a capture frame pool;
and acquiring each frame of pixel image corresponding to the video data in a background display buffer area corresponding to the target file window, and storing the pixel image to the capture frame pool for reading the pixel image in the capture frame pool.
Further, the processor 1001 may call the remote presentation program stored in the memory 1005, and also perform the following operations:
encoding the pixel image to encode the pixel image into a video stream with a preset format;
and sending the video stream to the display terminal through an IP network so that the display terminal decodes the video stream to obtain the pixel image when receiving the video stream, and displaying the video data to the large screen display through an HDMI interface based on the pixel image.
Further, the processor 1001 may call the remote presentation program stored in the memory 1005, and also perform the following operations:
when a preset file is started, displaying the preset file in a file window;
and acquiring a currently opened file window, and displaying a thumbnail window corresponding to the file window on the information issuing system when a remote display control instruction is received so as to trigger the remote display request based on the thumbnail window.
Further, the processor 1001 may call the remote presentation program stored in the memory 1005, and also perform the following operations:
when a remote operation control instruction sent by the display terminal is received, determining a target file window corresponding to the remote operation control instruction, and executing remote control operation corresponding to the remote operation control instruction on the target file window corresponding to the remote operation control instruction;
and the remote operation control instruction is input by the display terminal through a keyboard and/or a mouse.
Further, the processor 1001 may call the remote presentation program stored in the memory 1005, and also perform the following operations:
when a preset file is started, displaying the preset file in a file window;
determining a currently opened file window, and acquiring a window handle corresponding to the file window;
and based on the window handle, acquiring a single-frame pixel image corresponding to the file window from a background display buffer area, and sending the single-frame pixel image to the display terminal so that the display terminal can display the single-frame pixel image to a thumbnail window when receiving a remote display instruction.
Further, the processor 1001 may call the remote presentation program stored in the memory 1005, and also perform the following operations:
when a remote display request sent by the display terminal is received, determining a target file window corresponding to the remote display request based on a file window identifier in the remote display request, wherein the remote display request carries the file window identifier.
The invention also provides a remote display method, and referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the remote display method of the invention.
In this embodiment, the remote display method includes the following steps:
step S10, when a remote display request is received, determining a target file window corresponding to the remote display request based on the remote display request;
the remote display method provided by the invention is applied to an information release system and a display terminal which are interconnected in communication, wherein the display terminal is respectively connected with a mouse, a keyboard and a large screen display, and is connected with the large screen display through an HDMI (high-definition multimedia interface), the information release system is a software system installed on a computer, the display terminal is an embedded terminal which can be connected with the keyboard, the mouse and the display, and the display terminal can reversely control the information release system. It can be understood that the user can directly operate and control the information distribution system by directly operating the information distribution system, and can also control the information distribution system by a mouse or a keyboard connected with the display terminal. Furthermore, because the display terminal is an embedded terminal, the display terminal can be connected with a plurality of displays, so that the video data output by the information distribution system can be displayed on the plurality of displays.
In this embodiment, when a terminal corresponding to the information distribution system opens a preset file, the preset file is displayed in a file window, and if a plurality of preset files are currently opened, each preset file is respectively displayed in a plurality of different windows, where the preset file is browsable information displayed on the terminal corresponding to the information distribution system based on a preset application, and the preset file may be a file of any format, including a Word document, an Excel document, a PPT, a web page, a picture, a video, or the like. When the information issuing system receives the remote display request, a target file window indicated by the remote display request is determined in a plurality of currently opened file windows based on the file information carried in the remote display request. The remote display request is request information for controlling the information issuing system to enter a remote display mode, and the remote display request can be triggered on an interface of the information issuing system or sent by the display terminal, that is, if the information issuing system receives the remote display request triggered by the information issuing system or the remote display request sent by the display terminal, the target file window corresponding to the remote display request is determined based on the remote display request.
Step S20, acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer zone corresponding to the target file window based on the target window handle;
in this embodiment, after determining the target file window corresponding to the remote display request, the target window handle corresponding to the target file window is obtained, and then the video data corresponding to the target file is obtained based on the target window handle. Specifically, video data corresponding to a target file is acquired in a background display buffer corresponding to a target file window through a target window handle, wherein the background display buffer is a representation of a preset file in a GPU memory before the preset file is displayed, the window handle is an identifier of the preset file in the background of the file window after the preset file is displayed in the file window, the preset file, the file window and the window handle are in one-to-one correspondence, namely one preset file is displayed in one file window, one file window corresponds to one window handle, one file window is indexed by one unique window handle, and only one file window can be indexed by one window handle.
It should be noted that, after the terminal corresponding to the information distribution system opens the preset file, the opened preset file is displayed in the form of a file window and identified by a window handle in the background, that is, the file window is a graphic window opened by the preset file on the terminal where the information distribution system is located, that is, the graphic window is a display window of the preset file on the display, and the title bar of the file window displays the file name of the opened file.
And S30, sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface.
In this embodiment, after the video data corresponding to the target file window is obtained, that is, the information distribution system obtains the video data corresponding to the target file, the video data is sent to the display terminal through the IP network; when the display terminal receives video data sent by the information release system, the display terminal displays the video data on the large screen display through the HDMI data transmission line connected with the HDMI interface, wherein the display terminal is connected with the large screen display through the HDMI data transmission line, and the number of the display screens connected with the display terminal can be multiple, so that information released by the information release system can be displayed on the multiple display screens through the display terminal, and the large screen display can comprise multiple sub display screens.
In the remote display method provided by the embodiment, when a remote display request is received, a target file window corresponding to the remote display request is determined based on the remote display request; acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer corresponding to the target file window based on the target window handle; and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface. In this embodiment, when the information distribution system receives a remote display request, a target file window indicated by the remote display request is determined in a plurality of currently opened file windows, then a target window handle corresponding to the target file window is obtained, video data displayed on the target file window is obtained in a background display buffer area based on the target window handle, and then the video data is sent to the display terminal so that the display terminal can receive the video data and display the video data on the large-screen display. Therefore, the invention realizes the remote display of the video data by directly acquiring the video data corresponding to the file window and displaying the video data on the large-screen display through the display terminal, solves the technical problem that the existing information publishing and displaying system can not carry out remote publishing and displaying, and can also publish the contents of documents, pictures or web pages and the like in any format through the information publishing system and the display terminal because the files displayed in the file window can be in different formats.
Based on the first embodiment, a second embodiment of the remote display method of the present invention is provided, and referring to fig. 3, in this embodiment, step S20 includes:
step S21, based on the target window handle, determining a background display buffer area corresponding to the target file window, and creating a capture frame pool;
step S22, obtaining each frame of pixel image corresponding to the video data in a background display buffer area corresponding to the target file window, and storing the pixel image to the capturing frame pool for reading the pixel image in the capturing frame pool.
In this embodiment, after determining the target file window corresponding to the remote display request, the target window handle corresponding to the target file window is obtained, then the background display buffer corresponding to the target window handle is obtained according to the target window handle, and meanwhile, the capture frame pool is created. And then acquiring each frame of pixel image corresponding to the video data from the background display buffer area, storing each frame of pixel image into a capture frame pool, and reading the pixel image in the capture frame pool to acquire the video data corresponding to the target file window. The window handles correspond to the buffer areas in the background display buffer areas one by one, and the capture frame pool is created to store the pictures displayed on the target file window into a CPU memory for subsequent reading of the pictures displayed in the target file window. It can be understood that the captured frame pool stores a pixel image queue which is already displayed in the target file window, and the pixel image is read from the captured frame pool when video data needs to be transmitted.
Further, the step of sending the video data to the display terminal for the display terminal to display the video data to the large screen display through an HDMI interface includes:
encoding the pixel image to encode the pixel image into a video stream with a preset format;
and sending the video stream to the display terminal through an IP network so that the display terminal decodes the video stream to obtain the pixel image when receiving the video stream, and displaying the video data to the large screen display through an HDMI interface based on the pixel image.
In this embodiment, since the pixel image of the acquired file window is stored in the RGB format, the pixel image occupies a large storage space, and therefore occupies a large bandwidth during transmission, so that the bandwidth occupation during image transmission is reduced by performing compression coding in this embodiment. Therefore, after the pixel image is acquired from the capture frame pool, the pixel image is compressed and encoded, the pixel image in the RGB format is encoded and compressed into a video stream in the H264 format, then the encoded video stream is packaged in an RTP protocol, and then the obtained video stream in the H264 format is sent to the display terminal through the IP network by using the IP protocol. The display terminal receives the video stream in the H264 format transmitted by the information distribution system, and decodes the video stream to obtain the original pixel image.
The encoding compression can be performed by using FFMPEG software encoding or by using graphics card hardware, the decoding process is an opposite process of the encoding compression, and the video stream in the H264 format can be displayed as an image after being decoded.
Further, before the step of determining, based on the remote display request, a target file window corresponding to the remote display request when the remote display request is received, the method further includes:
when a preset file is started, displaying the preset file in a file window;
and acquiring a currently opened file window, and displaying a thumbnail window corresponding to the file window on the information issuing system when a remote display control instruction is received so as to trigger the remote display request based on the thumbnail window.
When a terminal corresponding to the information publishing system opens a preset file, the preset file is displayed in a file window, and if a plurality of preset files are opened currently, each preset file is displayed in a plurality of different file windows respectively, wherein the preset files are browsable information displayed on the terminal corresponding to the information publishing system based on preset application, and the preset files can be files in any format, including Word documents, excel documents, PPT, web pages, pictures or videos.
When the information issuing system receives the remote display control instruction, the remote display control interface is displayed, the currently opened file window is obtained, the pixel image corresponding to the currently opened file window is obtained, then the obtained pixel image is reduced into the thumbnail window, and the thumbnail window is displayed on the remote display control interface of the information issuing system. After the remote display control interface is displayed, a user triggers a remote display request through a thumbnail window in the remote display control interface, and if the remote display request for a target thumbnail window triggered based on the remote display control interface is detected, a target file window corresponding to the target thumbnail window is determined based on the target thumbnail window, then a target window handle corresponding to the target file window is obtained, and video data corresponding to the target file window is obtained from a background display buffer zone corresponding to the target file window based on the target window handle; and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through the HDMI interface.
In this embodiment, the information distribution system first enumerates all currently opened file windows, and displays them in the form of thumbnails for the user to select. The user can judge whether the file needs to be published according to the title and the content of the thumbnail. The file, the file window and the thumbnail window are in one-to-one relationship, and when a user selects the thumbnail window, the file to be published and the corresponding file window are shown.
Further, after the step of sending the video data to the display terminal for the display terminal to display the video data to the large screen display through the HDMI interface, the method further includes:
when a remote operation control instruction sent by the display terminal is received, determining a target file window corresponding to the remote operation control instruction, and executing remote control operation corresponding to the remote operation control instruction on the target file window corresponding to the remote operation control instruction;
and the remote operation control instruction is input by the display terminal through a keyboard and/or a mouse.
In this embodiment, the display terminal is in communication connection with the mouse and the keyboard, respectively, and therefore, the display window of the display terminal can be operated and controlled through the mouse and the keyboard. Specifically, a preset control operation is triggered on a display window of the display terminal through a mouse and a keyboard connected with the display terminal, the display terminal generates a remote operation control instruction based on the preset control operation, and the remote operation control instruction is sent to the information issuing system through an IP network. When the information issuing system receives a remote operation control instruction sent by the display terminal, a target file window corresponding to the remote operation control instruction is determined, remote control operation corresponding to preset control operation is determined based on the remote operation control instruction, and finally the remote control operation is executed in the target file window. The preset control operation corresponds to the remote control operation, and the preset control operation or the remote control operation may be interface operations such as a page turning operation, a zooming operation, or a marking operation, and the preset control operation or the remote control operation is not specifically limited in this embodiment.
In this embodiment, a keyboard or a mouse of the display terminal is used to transmit a remote operation control instruction through the IP network, and a specified window of the information distribution system is reversely controlled, thereby implementing a function of remote operation software.
Further, when a remote display request is received, the step of determining a target file window corresponding to the remote display request based on the remote display request includes:
when a preset file is started, displaying the preset file in a file window;
determining a currently opened file window, and acquiring a window handle corresponding to the file window;
and based on the window handle, acquiring a single-frame pixel image corresponding to the file window from a background display buffer area, and sending the single-frame pixel image to the display terminal so that the display terminal can display the single-frame pixel image to a thumbnail window when receiving a remote display instruction.
When a terminal corresponding to the information issuing system opens a preset file, the preset file is displayed in a file window, and if a plurality of preset files are opened currently, each preset file is displayed in a plurality of different file windows respectively. Acquiring currently opened file windows, and determining background display buffer areas corresponding to the file windows through window handles corresponding to the file windows; acquiring a single-frame pixel image corresponding to a currently opened file window in each background display buffer area, and then sending the acquired single-frame pixel image to a display terminal; and the display terminal receives the single-frame pixel image sent by the information distribution system. When the display terminal receives the remote display control instruction, the remote display control interface is displayed, the currently received single-frame pixel image is obtained, then the single-frame pixel image is reduced into a thumbnail window, and the thumbnail window is displayed on the remote display control interface of the display terminal.
Further, when the remote display request is sent by the display terminal, and when the remote display request is received, the step of determining the target file window corresponding to the remote display request based on the remote display request includes:
when a remote display request sent by a display terminal is received, a target file window corresponding to the remote display request is determined based on a file window identifier in the remote display request, and the remote display request carries the file window identifier.
In the remote display method provided by this embodiment, a background display buffer corresponding to the target file window is determined based on the target window handle, and a capture frame pool is created; and acquiring each frame of pixel image corresponding to the video data in a background display buffer area corresponding to the target file window, and storing the pixel image to the capture frame pool for reading the pixel image in the capture frame pool. In this embodiment, the pixel image queue displayed on the target file window is stored in the capture frame pool, so that when video data needs to be transmitted, a pixel image is read from the pixel image queue in the capture frame pool.
In addition, an embodiment of the present invention further provides a remote display device, where the remote display device includes:
the determining module is used for determining a target file window corresponding to a remote display request based on the remote display request when the remote display request is received;
the acquisition module is used for acquiring a target window handle corresponding to the target file window and acquiring video data corresponding to the target file window from a background display buffer zone corresponding to the target file window based on the target window handle;
and the sending module is used for sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through the HDMI interface.
Further, the obtaining module is further configured to:
determining a background display buffer area corresponding to the target file window based on the target window handle, and creating a capture frame pool;
and acquiring each frame of pixel image corresponding to the video data in a background display buffer area corresponding to the target file window, and storing the pixel image to the capture frame pool for reading the pixel image in the capture frame pool.
Further, the obtaining module is further configured to:
encoding the pixel image to encode the pixel image into a video stream with a preset format;
and sending the video stream to the display terminal through an IP network so that the display terminal decodes the video stream to obtain the pixel image when receiving the video stream, and displaying the video data to the large screen display through an HDMI interface based on the pixel image.
Further, the determining module is further configured to:
when a preset file is started, displaying the preset file in a file window;
and acquiring a currently opened file window, and displaying a thumbnail window corresponding to the file window on the information issuing system when a remote display control instruction is received so as to trigger the remote display request based on the thumbnail window.
Further, the sending module is further configured to:
when a remote operation control instruction sent by the display terminal is received, determining a target file window corresponding to the remote operation control instruction, and executing remote control operation corresponding to the remote operation control instruction on the target file window corresponding to the remote operation control instruction;
and the remote operation control instruction is input by the display terminal through a keyboard and/or a mouse.
Further, the determining module is further configured to:
when a preset file is started, displaying the preset file in a file window;
determining a currently opened file window, and acquiring a window handle corresponding to the file window;
and based on the window handle, acquiring a single-frame pixel image corresponding to the file window from a background display buffer area, and sending the single-frame pixel image to the display terminal so that the display terminal can display the single-frame pixel image to a thumbnail window when receiving a remote display instruction.
Further, the determining module is further configured to:
when a remote display request sent by the display terminal is received, determining a target file window corresponding to the remote display request based on a file window identifier in the remote display request, wherein the remote display request carries the file window identifier.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a remote presentation program is stored, and the remote presentation program, when executed by a processor, implements the steps of the remote presentation method described in any one of the above.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the remote display method described above, and will not be described in detail herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A remote display method is applied to an information release system, the information release system is in communication connection with a display terminal, the display terminal is connected with a large screen display through an HDMI interface, and the remote display method comprises the following steps:
when a preset file is started, displaying the preset file in a file window;
acquiring a currently opened file window, and displaying a thumbnail window corresponding to the file window on the information issuing system when a remote display control instruction is received so as to trigger a remote display request based on the thumbnail window;
when a remote display request is received, determining a target file window corresponding to the remote display request based on the remote display request;
the step of determining a target file window corresponding to the remote display request based on the remote display request includes:
if a remote display request for the target thumbnail window triggered on the basis of the remote display control interface is detected, determining a target file window corresponding to the target thumbnail window on the basis of the target thumbnail window;
acquiring a target window handle corresponding to the target file window, and acquiring video data corresponding to the target file window from a background display buffer corresponding to the target file window based on the target window handle;
and sending the video data to the display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface.
2. The remote presentation method as claimed in claim 1, wherein said step of obtaining video data corresponding to said target file window from a background display buffer corresponding to said target file window based on said target window handle comprises:
determining a background display buffer area corresponding to the target file window based on the target window handle, and creating a capture frame pool;
and acquiring each frame of pixel image corresponding to the video data in a background display buffer area corresponding to the target file window, and storing the pixel image to the capture frame pool for reading the pixel image in the capture frame pool.
3. A remote presentation method as claimed in claim 2, wherein said step of sending said video data to said presentation terminal for said presentation terminal to display said video data to said large screen display via an HDMI interface comprises:
encoding the pixel image to encode the pixel image into a video stream with a preset format;
and sending the video stream to the display terminal through an IP network so that the display terminal decodes the video stream to obtain the pixel image when receiving the video stream, and displaying the video data to the large screen display through an HDMI interface based on the pixel image.
4. The remote display method of claim 1, wherein after the step of sending the video data to the display terminal for the display terminal to display the video data to the large screen display through an HDMI interface, further comprising:
when a remote operation control instruction sent by the display terminal is received, determining a target file window corresponding to the remote operation control instruction, and executing remote control operation corresponding to the remote operation control instruction on the target file window corresponding to the remote operation control instruction;
and the remote operation control instruction is input by the display terminal through a keyboard and/or a mouse.
5. The remote presentation method according to claim 1, wherein said step of determining a target file window corresponding to a remote presentation request based on the remote presentation request upon receiving the remote presentation request comprises:
when a preset file is started, displaying the preset file in a file window;
determining a currently opened file window, and acquiring a window handle corresponding to the file window;
and based on the window handle, acquiring a single-frame pixel image corresponding to the file window from a background display buffer area, and sending the single-frame pixel image to the display terminal so that the display terminal can display the single-frame pixel image to a thumbnail window when receiving a remote display instruction.
6. The remote display method according to any one of claims 1 to 5, wherein, when the remote display request is sent by the display terminal, the step of determining, when a remote display request is received, a target file window corresponding to the remote display request based on the remote display request comprises:
when a remote display request sent by the display terminal is received, determining a target file window corresponding to the remote display request based on a file window identifier in the remote display request, wherein the remote display request carries the file window identifier.
7. A remote display apparatus, the remote display apparatus comprising:
the starting module is used for displaying a preset file in a file window when the preset file is started;
the display module is used for acquiring a currently opened file window and displaying a thumbnail window corresponding to the file window on an information issuing system when a remote display control instruction is received so as to trigger a remote display request based on the thumbnail window;
the determining module is used for determining a target file window corresponding to a remote display request based on the remote display request when the remote display request is received;
wherein the determining module comprises:
the window determining unit is used for determining a target file window corresponding to the target thumbnail window based on the target thumbnail window if a remote display request for the target thumbnail window triggered based on the remote display control interface is detected;
the acquisition module is used for acquiring a target window handle corresponding to the target file window and acquiring video data corresponding to the target file window from a background display buffer zone corresponding to the target file window based on the target window handle;
and the sending module is used for sending the video data to a display terminal so that the display terminal can display the video data to the large screen display through an HDMI interface.
8. A remote display device, the remote display device comprising: memory, a processor and a remote presentation program stored on the memory and executable on the processor, the remote presentation program when executed by the processor implementing the steps of the remote presentation method as claimed in any one of claims 1 to 6.
9. A computer-readable storage medium, having stored thereon a remote presentation program, which when executed by a processor, carries out the steps of the remote presentation method according to any one of claims 1 to 6.
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| US8723891B2 (en) * | 2009-02-27 | 2014-05-13 | Ncomputing Inc. | System and method for efficiently processing digital video |
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| CN102436350B (en) * | 2011-12-06 | 2014-11-12 | 北京航空航天大学 | Remote application window display method, server and user terminal |
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