CN114125539B - Intelligent large-screen device high-definition playing control method and system based on wireless transmission - Google Patents
Intelligent large-screen device high-definition playing control method and system based on wireless transmission Download PDFInfo
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- CN114125539B CN114125539B CN202210104223.7A CN202210104223A CN114125539B CN 114125539 B CN114125539 B CN 114125539B CN 202210104223 A CN202210104223 A CN 202210104223A CN 114125539 B CN114125539 B CN 114125539B
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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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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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
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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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/60—Context-dependent security
- H04W12/69—Identity-dependent
- H04W12/72—Subscriber identity
Abstract
The invention discloses a high-definition play control method and system of intelligent large-screen equipment based on wireless transmission; wherein the method comprises the following steps: after the intelligent terminal is connected with the wireless screen transmitter, the wireless screen transmitter is controlled to be in wireless connection with the intelligent large-screen device; acquiring equipment state parameters of the intelligent large-screen equipment based on the wireless screen transmitter, wherein the equipment state parameters comprise playing resolution data of the intelligent large-screen equipment; acquiring a plurality of audio and video data sources to be played, and determining the audio and video data to be played; carrying out compression coding on audio and video data to be played to form audio and video code stream data, and sending the audio and video code stream data to the wireless screen transmitter; and controlling the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen device for decoding and playing. In the embodiment of the invention, the intelligent terminal realizes the wireless control of the playing of the high-definition video data on the intelligent large-screen device, and can ensure the stability of wireless transmission and improve the viewing visual experience of a user.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a high-definition play control method and system of intelligent large-screen equipment based on wireless transmission. Background
The data information displayed on the data source equipment can be projected to another equipment for synchronous display through a screen projection technology, which can be generally divided into a wired screen projection mode and a wireless screen projection mode, wherein the wired screen projection mode needs to be realized through related data lines, and the wireless screen projection mode needs to be realized by means of wireless screen projection (screen transmission) equipment; when throwing the screen, generally probably there is the difference of display device's display ratio and display resolution, can't throw the screen display according to display device's display ratio or display resolution and show, when the screen is thrown to the wireless simultaneously, need to hand over complicated artifical setting for wireless connection to when because of the unstable disconnection of signal, still need the manual work to carry out reconnection, lead to user experience relatively poor etc..
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the intelligent large-screen device high-definition playing control method and system based on wireless transmission.
In order to solve at least one technical problem, an embodiment of the present invention provides a high-definition play control method for an intelligent large-screen device based on wireless transmission, including an intelligent terminal, a wireless screen transmitter and an intelligent large-screen device, where the wireless screen transmitter is connected to the intelligent terminal in a plug-in manner based on a data interface, and the intelligent terminal is connected to the intelligent large-screen device based on the wireless screen transmitter; the method comprises the following steps:
the intelligent terminal controls the wireless screen transmitter to be in wireless connection with the intelligent large-screen device after being plugged into the wireless screen transmitter based on the data interface;
acquiring equipment state parameters of the intelligent large-screen equipment based on the wireless screen transmitter, wherein the equipment state parameters comprise playing resolution data of the intelligent large-screen equipment;
the intelligent terminal acquires a plurality of audio and video data sources to be played and determines audio and video data to be played based on the resource quantity of the audio and video data sources to be played and the equipment state parameter;
the intelligent terminal compresses and encodes the audio and video data to be played to form audio and video code stream data and sends the audio and video code stream data to the wireless screen transmitter;
and the intelligent terminal controls the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen equipment for decoding and playing.
Optionally, the controlling the wireless screen transmitter and the intelligent large-screen device to be wirelessly connected includes:
the intelligent terminal obtains the SSID name and the corresponding password data in the wireless screen transmission device;
the intelligent terminal generates specific frequency ultrasonic waves based on the SSID name and the corresponding password data;
controlling audio playing equipment on the intelligent terminal to play specific frequency ultrasonic waves to the intelligent large-screen equipment;
and controlling the wireless screen transmitter to receive a wireless connection request sent by the intelligent large-screen equipment based on the ultrasonic wave with the specific frequency, and wirelessly connecting the wireless connection request with the intelligent large-screen equipment.
Optionally, the controlling the audio playing device on the intelligent terminal to play the specific frequency ultrasonic wave to the intelligent large-screen device includes:
controlling an audio playing device on the intelligent terminal to play specific frequency ultrasonic waves to the intelligent large-screen device according to a preset playing rule;
the preset playing rule comprises the time length for playing the ultrasonic wave with the specific frequency once and the frequency for playing the ultrasonic wave with the specific frequency circularly.
Optionally, after controlling the wireless screen transmitter to be wirelessly connected with the intelligent large-screen device, the method further includes:
the intelligent terminal controls the wireless screen transmission device to cache the equipment information of the intelligent large-screen equipment;
meanwhile, the intelligent terminal monitors whether the wireless connection between the wireless screen transmitter and the intelligent large-screen device is disconnected or not in real time;
and if the wireless screen transmission device is disconnected, the wireless screen transmission device is controlled to perform wireless connection reestablishment request on the intelligent large-screen device cached with the device information, password verification is not needed, and wireless connection is reestablished.
Optionally, the obtaining of the device state parameter of the intelligent large-screen device based on the wireless screen transmitter includes:
the intelligent terminal sends a state parameter obtaining instruction to the intelligent large-screen device based on the wireless screen transmitter, and receives the device state parameter returned by the intelligent large-screen device according to the state parameter obtaining instruction based on the wireless screen transmitter.
Optionally, the method for determining the audio and video data to be played based on the resource quantity of the audio and video data to be played and the device state parameter includes:
the intelligent terminal carries out resource retrieval based on the playing request to obtain a plurality of audio and video data sources to be played;
acquiring the quantity of resources corresponding to a plurality of audio and video data sources to be played, and acquiring the corresponding downloading speed for downloading the audio and video data corresponding to the plurality of audio and video data sources to be played to the intelligent terminal according to the resource data corresponding to the plurality of audio and video data sources to be played;
comparing the corresponding downloading speed with the playing speed of the audio and video playing of the intelligent large-screen equipment, and obtaining a corresponding first audio and video data source to be played;
acquiring first resolution data of video data in the first audio and video data source to be played and playing resolution data in the equipment state parameters;
selecting a corresponding second audio/video data source to be played from the first audio/video data source to be played based on the first resolution data and the playing resolution data;
and determining audio and video data to be played based on the second audio and video data source to be played.
Optionally, before the intelligent terminal performs compression coding on the audio/video data to be played, the method further includes:
judging whether the resolution of the audio and video data to be played meets the playing resolution data of the intelligent large-screen device or not;
if the video frame does not meet the requirement, performing convolution digital image processing on the video frame of the audio and video data to be played to obtain a first video frame meeting the requirement of playing resolution data;
and carrying out cutout processing on the first video frame based on a chroma cutout algorithm to obtain a target video frame.
Optionally, the compressing and encoding the audio/video data to be played by the intelligent terminal to form audio/video code stream data, including:
the intelligent terminal separates the audio and video data to be played to obtain the audio data to be played, the video data to be played and a playing time stamp;
carrying out compression coding processing on the audio data to be played and the playing time stamp to form audio code stream data;
and carrying out compression coding processing on the video data to be played and the playing time stamp to form video code stream data.
Optionally, a first buffer area and a second buffer area are opened in the wireless screen transmitter;
the intelligent terminal controls the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen device for decoding and playing, and the method comprises the following steps:
the wireless screen transmitter caches the audio code stream data to a first cache region and caches the video code stream data to a second cache region;
and the intelligent terminal synchronously extracts corresponding audio code stream data and video code stream data from the first cache region and the second cache region based on the playing time stamps and sends the audio code stream data and the video code stream data to the intelligent large-screen equipment for decoding and playing.
In addition, the embodiment of the invention also provides a high-definition play control system of the intelligent large-screen device based on wireless transmission, and the system comprises an intelligent terminal, a wireless screen transmitter and the intelligent large-screen device, wherein the wireless screen transmitter is connected with the intelligent terminal in a plug-pull manner based on a data interface, and the intelligent terminal is connected with the intelligent large-screen device based on the wireless screen transmitter; the system is configured to execute the method for controlling high-definition playing of the intelligent large-screen device.
In the embodiment of the invention, the intelligent terminal realizes the wireless control of the playing of the high-definition video data on the intelligent large-screen device, and can ensure the stability of wireless transmission and improve the viewing visual experience of a user; meanwhile, a plurality of audio and video data sources to be played are obtained simultaneously, so that the audio and video data to be played with proper and stable resolution are selected; when the resolution does not meet the playing requirement of the intelligent large-screen device, the intelligent terminal performs corresponding resolution enhancement processing on the video data in the audio and video data to be played so as to meet the playing requirement of the intelligent large-screen device; meanwhile, when the wireless screen transmitter is wirelessly connected with the intelligent large-screen equipment, the SSID of the wireless screen transmitter and the corresponding password are sent to the intelligent large-screen equipment in an ultrasonic form, and wireless connection is not required to be manually set; meanwhile, the reconnection is quickly realized when the short-time disconnection is realized in a mode of caching the equipment information of the intelligent large-screen equipment in the wireless screen transmission device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a high-definition play control method of an intelligent large-screen device based on wireless transmission in an embodiment of the present invention;
fig. 2 is a schematic structural composition diagram of an intelligent large-screen device high-definition play control system based on wireless transmission in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 1 is a schematic flow chart of a high-definition play control method for an intelligent large-screen device based on wireless transmission according to an embodiment of the present invention.
As shown in fig. 1, a high-definition play control method for an intelligent large-screen device based on wireless transmission includes an intelligent terminal, a wireless screen transmitter and the intelligent large-screen device, wherein the wireless screen transmitter is connected with the intelligent terminal in a plug-in manner based on a data interface, and the intelligent terminal is connected with the intelligent large-screen device based on the wireless screen transmitter;
in the embodiment of the invention, hardware equipment for realizing the method comprises an intelligent terminal, a wireless screen transmitter and intelligent large-screen equipment, wherein the intelligent terminal is provided with a USB interface or a type-C interface, and the wireless screen transmitter is connected with the intelligent terminal in a plug-in manner through the USB interface or the type-C interface; after the wireless screen transmission device is connected with the intelligent terminal, the wireless screen transmission device is wirelessly connected with the intelligent large-screen device, and then high-definition playing control of the corresponding intelligent large-screen device is achieved.
The method comprises the following steps:
s11: the intelligent terminal controls the wireless screen transmitter to be in wireless connection with the intelligent large-screen device after being plugged into the wireless screen transmitter based on the data interface;
in a specific implementation process of the present invention, the controlling the wireless screen transmitter to wirelessly connect with the intelligent large-screen device includes: the intelligent terminal obtains the SSID name and the corresponding password data in the wireless screen transmitter; the intelligent terminal generates specific frequency ultrasonic waves based on the SSID name and the corresponding password data; controlling audio playing equipment on the intelligent terminal to play specific frequency ultrasonic waves to the intelligent large-screen equipment; and controlling the wireless screen transmitter to receive a wireless connection request sent by the intelligent large-screen equipment based on the ultrasonic wave with the specific frequency, and wirelessly connecting the wireless connection request with the intelligent large-screen equipment.
Further, the controlling the audio playing device on the intelligent terminal to play the specific frequency ultrasonic wave to the intelligent large-screen device includes: controlling audio playing equipment on the intelligent terminal to play specific frequency ultrasonic waves to the intelligent large-screen equipment according to a preset playing rule; the preset playing rule comprises the time length for playing the ultrasonic wave with the specific frequency once and the frequency for playing the ultrasonic wave with the specific frequency circularly.
Further, after controlling the wireless screen transmission device and the intelligent large-screen device to be wirelessly connected, the method further includes: the intelligent terminal controls the wireless screen transmission device to cache the equipment information of the intelligent large-screen equipment; meanwhile, the intelligent terminal monitors whether the wireless connection between the wireless screen transmitter and the intelligent large-screen device is disconnected or not in real time; and if the wireless screen transmission device is disconnected, the wireless screen transmission device is controlled to perform wireless connection reestablishment request on the intelligent large-screen device cached with the device information, password verification is not needed, and wireless connection is reestablished.
Specifically, the intelligent terminal needs to control wireless connection between the wireless screen transmitter and the intelligent large-screen device, and since the SSID name and the corresponding password data on the wireless screen transmitter are set in advance, after the wireless screen transmitter is connected with the intelligent terminal, corresponding software is started on the intelligent terminal, and the SSID name and the corresponding password data in the wireless screen transmitter are read; generating a specific frequency ultrasonic signal by the SSID name and the corresponding password data through a corresponding software program at the intelligent terminal, then sending the specific ultrasonic signal to a controller (generally an MCU controller integrated with the playing device) of audio playing equipment of the intelligent terminal, and then controlling the audio playing equipment to play the specific frequency ultrasonic wave to the intelligent large-screen equipment; and then the intelligent equipment controls the wireless screen transmitter to receive a wireless connection request sent by the intelligent large-screen equipment according to the ultrasonic wave with the specific frequency, and then wireless connection is established with the intelligent large-screen equipment.
When the intelligent equipment controls the audio playing equipment to play the ultrasonic wave with the specific frequency to the intelligent large-screen equipment, the audio playing equipment on the intelligent terminal is controlled for the intelligent equipment to play the ultrasonic wave with the specific frequency to the intelligent large-screen equipment according to a preset playing rule; the preset playing rule comprises the time length for playing the ultrasonic wave with the specific frequency once and the frequency for playing the ultrasonic wave with the specific frequency circularly; therefore, the intelligent large-screen equipment can be ensured to receive complete ultrasonic waves with specific frequency, SSID names and corresponding password data can be accurately obtained, and wireless connection requests are sent according to the SSID names and the corresponding password data.
After the wireless screen transmitter is wirelessly connected with the intelligent large-screen device, the intelligent terminal needs to control the wireless screen transmitter to obtain the information of the intelligent large-screen device and the connected device, and cache the information; then, monitoring whether the wireless connection between the wireless screen transmitter and the intelligent large-screen device is disconnected or not in real time through the intelligent terminal;
s12: acquiring equipment state parameters of the intelligent large-screen equipment based on the wireless screen transmitter, wherein the equipment state parameters comprise playing resolution data of the intelligent large-screen equipment;
in a specific implementation process of the present invention, the obtaining the state parameter of the intelligent large-screen device based on the wireless screen transmitter includes: the intelligent terminal sends a state parameter acquisition instruction to the intelligent large-screen device based on the wireless screen transmitter; and receiving the equipment state parameters returned by the intelligent large-screen equipment according to the state parameter acquisition instruction based on the wireless screen transmitter.
Specifically, the intelligent terminal firstly generates a state parameter acquisition instruction, and then sends the state parameter acquisition instruction to the intelligent large-screen device according to the wireless screen transmitter; and finally, receiving the equipment state parameters returned by the intelligent large-screen equipment according to the state parameter acquisition instruction according to the wireless screen transmitter.
S13: the intelligent terminal acquires a plurality of audio and video data sources to be played and determines audio and video data to be played based on the resource quantity of the audio and video data sources to be played and the equipment state parameter;
in the specific implementation process of the invention, the intelligent terminal acquires a plurality of audio and video data sources to be played, and determines the audio and video data to be played based on the resource quantity of the audio and video data sources to be played and the equipment state parameter, and the method comprises the following steps: the intelligent terminal carries out resource retrieval based on the playing request to obtain a plurality of audio and video data sources to be played; acquiring the quantity of resources corresponding to a plurality of audio and video data sources to be played, and acquiring the corresponding downloading speed for downloading the audio and video data corresponding to the plurality of audio and video data sources to be played to the intelligent terminal according to the resource data corresponding to the plurality of audio and video data sources to be played; comparing the corresponding downloading speed with the playing speed of the audio and video playing of the intelligent large-screen equipment, and obtaining a corresponding first audio and video data source to be played; acquiring first resolution data of video data in the first audio and video data source to be played and playing resolution data in the equipment state parameters; selecting a corresponding second audio/video data source to be played from the first audio/video data source to be played based on the first resolution data and the playing resolution data; and determining audio and video data to be played based on the second audio and video data source to be played.
Specifically, the retrieval of playing resources is carried out on the intelligent terminal according to the playing request of a user, and a plurality of audio and video data sources to be played corresponding to the playing request are obtained; the resource quantity of each audio and video data source to be played in a plurality of audio and video data sources to be played and first resolution data of video data in the audio and video data to be played need to be obtained simultaneously; then, acquiring corresponding downloading speed for downloading the audio and video data corresponding to the audio and video data sources to be played to the intelligent terminal according to the resource data corresponding to the audio and video data sources to be played; then, comparing the corresponding downloading speed with the playing speed of the audio and video playing of the intelligent large-screen device to obtain an audio and video data source to be played with the corresponding downloading speed being higher than the playing speed as a first audio and video data source to be played, wherein the first audio and video data source to be played can be composed of one or more than one; then, first resolution data of video data in the first audio/video data source to be played and playing resolution data in the equipment state parameters are obtained; then, selecting a corresponding second audio/video data source to be played according to the first resolution data and the playing resolution data; and determining audio and video data to be played according to the second audio and video data source to be played.
When a corresponding second audio/video data source to be played is selected according to the first resolution data and the playing resolution data, sequencing the first resolution data of the first audio/video data source to be played, then judging whether the first resolution data of the first audio/video data source to be played is larger than or equal to the playing resolution data in the equipment state parameter data or not at most, if so, selecting the first audio/video data source to be played, wherein the first resolution data is larger than or equal to the playing resolution data in the equipment state parameter data and is closest to the playing resolution data in the state parameter data, and taking the first audio/video data source to be played as the second audio/video data source to be played; and if the first resolution data is smaller than the second resolution data, selecting a first playing audio and video data source with the maximum first resolution data as a second audio and video data source to be played.
S14: the intelligent terminal compresses and encodes the audio and video data to be played to form audio and video code stream data and sends the audio and video code stream data to the wireless screen transmitter;
in the specific implementation process of the present invention, before the intelligent terminal performs compression coding on the audio/video data to be played, the method further includes: judging whether the resolution of the audio and video data to be played meets the playing resolution data of the intelligent large-screen device or not; if the video frame does not meet the requirement, performing convolution digital image processing on the video frame of the audio and video data to be played to obtain a first video frame meeting the requirement of playing resolution data; and carrying out cutout processing on the first video frame based on a chroma cutout algorithm to obtain a target video frame.
Further, the intelligent terminal performs compression coding on the audio/video data to be played to form audio/video code stream data, including: the intelligent terminal separates the audio and video data to be played to obtain the audio data to be played, the video data to be played and a playing time stamp; carrying out compression coding processing on the audio data to be played and the playing time stamp to form audio code stream data; and carrying out compression coding processing on the video data to be played and the playing time stamp to form video code stream data.
Specifically, in order to satisfy the playing resolution data of the intelligent large-screen device, it is necessary to determine whether the resolution data of the audio/video data to be played satisfies the playing resolution data of the intelligent large-screen device; and when the video frame is not satisfied, the video frame of the audio and video data to be played needs to be subjected to related resolution data improvement, so that the high-definition playing requirement is satisfied.
And calling a built-in GPU through a shader built in the intelligent terminal to sharpen and scratch the video frame of the audio and video data to be played, and obtaining a target video frame meeting the playing resolution.
The GPU performs convolution digital image processing on the video frame of the audio and video data to be played to obtain a first video frame meeting the playing resolution, wherein the first video frame is a high-definition video frame; and then, carrying out matting processing on the first video frame by utilizing a chroma matting algorithm to obtain a target video frame.
Then when the audio and video data to be played of the intelligent terminal device are compressed and coded, firstly, the audio and video data to be played are separated by the intelligent terminal, so that the audio data to be played, the video data to be played and a playing time stamp are obtained; then, carrying out compression coding processing on the audio data to be played and the playing time stamp to form audio code stream data; and meanwhile, carrying out compression coding processing on the video data to be played and the playing time stamp to form video code stream data.
S15: and the intelligent terminal controls the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen equipment for decoding and playing.
In the specific implementation process of the invention, a first cache region and a second cache region are opened in the wireless screen transmitter; the intelligent terminal controls the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen device for decoding and playing, and the method comprises the following steps: the wireless screen transmitter caches the audio code stream data to a first cache region and caches the video code stream data to a second cache region; and the intelligent terminal synchronously extracts corresponding audio code stream data and video code stream data from the first cache region and the second cache region based on the playing time stamps and sends the audio code stream data and the video code stream data to the intelligent large-screen equipment for decoding and playing.
Specifically, a first buffer area and a second buffer area are opened in the wireless screen transmitter, so that the subsequent synchronous playing processing is facilitated; then the wireless screen transmitter caches the audio code stream data to a first cache region and caches the video code stream data to a second cache region; the intelligent terminal can synchronously extract corresponding audio code stream data and video code stream data from the first cache region and the second cache region according to the playing time stamp and send the audio code stream data and the video code stream data to the intelligent large-screen equipment for decoding and playing; the synchronous playing of the audio and video data on the intelligent large-screen device can be realized.
In the embodiment of the invention, the intelligent terminal realizes the wireless control of the playing of the high-definition video data on the intelligent large-screen device, and can ensure the stability of wireless transmission and improve the viewing visual experience of a user; meanwhile, a plurality of audio and video data sources to be played are obtained simultaneously, so that the audio and video data to be played with proper and stable resolution are selected; when the resolution does not meet the playing requirement of the intelligent large-screen device, the intelligent terminal performs corresponding resolution enhancement processing on the video data in the audio and video data to be played so as to meet the playing requirement of the intelligent large-screen device; meanwhile, when the wireless screen transmitter is wirelessly connected with the intelligent large-screen equipment, the SSID of the wireless screen transmitter and the corresponding password are sent to the intelligent large-screen equipment in an ultrasonic form, and wireless connection is not required to be manually set; meanwhile, the reconnection is quickly realized when the short-time disconnection is realized in a mode of caching the equipment information of the intelligent large-screen equipment in the wireless screen transmission device.
Example two
Referring to fig. 2, fig. 2 is a schematic structural composition diagram of a high-definition play control system of an intelligent large-screen device based on wireless transmission according to an embodiment of the present invention.
As shown in fig. 2, the system for controlling high-definition playing of an intelligent large-screen device based on wireless transmission comprises an intelligent terminal 21, a wireless screen transmitter 22 and an intelligent large-screen device 23, wherein the wireless screen transmitter 22 is connected with the intelligent terminal 21 in a plug-in manner based on a data interface, and the intelligent terminal 21 is connected with the intelligent large-screen device 23 based on the wireless screen transmitter 22; the system is configured to execute the method for controlling high-definition playing of the intelligent large-screen device.
In the specific implementation process of the invention, the intelligent terminal 21 is provided with a USB interface or a type-C interface, and the wireless screen transmitter 22 is connected with the intelligent terminal 21 in a plug-in manner through the USB interface or the type-C interface; after the wireless screen transmitter 22 is connected with the intelligent terminal 21, the wireless screen transmitter 22 is wirelessly connected with the intelligent large-screen device 23, and then high-definition playing control of the corresponding intelligent large-screen device 23 is realized; meanwhile, the detailed implementation of the system part may refer to the embodiment of the method part, and is not described herein again.
In the embodiment of the invention, the intelligent terminal realizes the wireless control of the playing of the high-definition video data on the intelligent large-screen device, and can ensure the stability of wireless transmission and improve the viewing visual experience of a user; meanwhile, a plurality of audio and video data sources to be played are obtained simultaneously, so that the audio and video data to be played with proper and stable resolution are selected; when the resolution does not meet the playing requirement of the intelligent large-screen device, the intelligent terminal performs corresponding resolution enhancement processing on the video data in the audio and video data to be played so as to meet the playing requirement of the intelligent large-screen device; meanwhile, when the wireless screen transmitter is wirelessly connected with the intelligent large-screen equipment, the SSID of the wireless screen transmitter and the corresponding password are sent to the intelligent large-screen equipment in an ultrasonic form, and wireless connection is not required to be manually set; meanwhile, the reconnection is quickly realized when the short-time disconnection is realized in a mode of caching the equipment information of the intelligent large-screen equipment in the wireless screen transmission device.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
In addition, the method and the system for controlling high-definition playing of the intelligent large-screen device based on wireless transmission provided by the embodiment of the invention are described in detail, a specific embodiment is adopted to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A high-definition play control method of intelligent large-screen equipment based on wireless transmission is characterized by comprising an intelligent terminal, a wireless screen transmitter and the intelligent large-screen equipment, wherein the wireless screen transmitter is connected with the intelligent terminal in a plug-in manner based on a data interface, and the intelligent terminal is connected with the intelligent large-screen equipment based on the wireless screen transmitter; the method comprises the following steps:
the intelligent terminal controls the wireless screen transmitter to be in wireless connection with the intelligent large-screen device after being plugged into the wireless screen transmitter based on the data interface;
acquiring equipment state parameters of the intelligent large-screen equipment based on the wireless screen transmitter, wherein the equipment state parameters comprise playing resolution data of the intelligent large-screen equipment;
the intelligent terminal acquires a plurality of audio and video data sources to be played and determines audio and video data to be played based on the resource quantity of the audio and video data sources to be played and the equipment state parameter;
the intelligent terminal compresses and encodes the audio and video data to be played to form audio and video code stream data and sends the audio and video code stream data to the wireless screen transmitter;
the intelligent terminal controls the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen device for decoding and playing;
the intelligent terminal acquires a plurality of audio and video data sources to be played, and determines audio and video data to be played based on the resource quantity of the audio and video data sources to be played and the equipment state parameter, and the method comprises the following steps:
the intelligent terminal carries out resource retrieval based on the playing request to obtain a plurality of audio and video data sources to be played;
acquiring the quantity of resources corresponding to a plurality of audio and video data sources to be played, and acquiring the corresponding downloading speed for downloading the audio and video data corresponding to the plurality of audio and video data sources to be played to the intelligent terminal according to the resource data corresponding to the plurality of audio and video data sources to be played;
comparing the corresponding downloading speed with the playing speed of the audio and video playing of the intelligent large-screen equipment, and obtaining a corresponding first audio and video data source to be played;
acquiring first resolution data of video data in the first audio and video data source to be played and playing resolution data in the equipment state parameters;
selecting a corresponding second audio/video data source to be played from the first audio/video data source to be played based on the first resolution data and the playing resolution data;
when a corresponding second audio/video data source to be played is selected according to the first resolution data and the playing resolution data, sequencing the first resolution data of the first audio/video data source to be played, then judging whether the first resolution data of the first audio/video data source to be played is larger than or equal to the playing resolution data in the equipment state parameter data or not at most, if so, selecting the first audio/video data source to be played, wherein the first resolution data is larger than or equal to the playing resolution data in the equipment state parameter data and is closest to the playing resolution data in the state parameter data, and taking the first audio/video data source to be played as the second audio/video data source to be played; if the first resolution data is smaller than the second resolution data, selecting a first playing audio and video data source with the maximum first resolution data as a second audio and video data source to be played;
determining audio and video data to be played based on the second audio and video data source to be played;
before the intelligent terminal compresses and encodes the audio and video data to be played, the method further comprises the following steps:
judging whether the resolution of the audio and video data to be played meets the playing resolution data of the intelligent large-screen device or not;
if the video frame does not meet the requirement, calling a built-in GPU through a shader built in the intelligent terminal to carry out convolution digital image processing on the video frame of the audio and video data to be played to obtain a first video frame meeting the requirement of playing resolution data;
and carrying out cutout processing on the first video frame based on a chroma cutout algorithm to obtain a target video frame.
2. The method for controlling high-definition playing of the intelligent large-screen device according to claim 1, wherein the controlling of the wireless screen transmitter to be wirelessly connected with the intelligent large-screen device comprises:
the intelligent terminal obtains the SSID name and the corresponding password data in the wireless screen transmitter;
the intelligent terminal generates specific frequency ultrasonic waves based on the SSID name and the corresponding password data;
controlling audio playing equipment on the intelligent terminal to play specific frequency ultrasonic waves to the intelligent large-screen equipment;
and controlling the wireless screen transmitter to receive a wireless connection request sent by the intelligent large-screen equipment based on the ultrasonic wave with the specific frequency, and wirelessly connecting the wireless connection request with the intelligent large-screen equipment.
3. The method for controlling the intelligent large-screen device to play the high-definition audio according to claim 2, wherein the controlling the audio playing device on the intelligent terminal to play the specific-frequency ultrasonic to the intelligent large-screen device comprises:
controlling audio playing equipment on the intelligent terminal to play specific frequency ultrasonic waves to the intelligent large-screen equipment according to a preset playing rule;
the preset playing rule comprises the time length for playing the ultrasonic wave with the specific frequency once and the frequency for playing the ultrasonic wave with the specific frequency circularly.
4. The method for controlling high-definition playing of the intelligent large-screen device according to claim 1, wherein after the wireless screen transmitter is controlled to be wirelessly connected with the intelligent large-screen device, the method further comprises:
the intelligent terminal controls the wireless screen transmission device to cache the equipment information of the intelligent large-screen equipment;
meanwhile, the intelligent terminal monitors whether the wireless connection between the wireless screen transmitter and the intelligent large-screen device is disconnected or not in real time;
and if the wireless screen transmission device is disconnected, the wireless screen transmission device is controlled to perform wireless connection reestablishment request on the intelligent large-screen device cached with the device information, password verification is not needed, and wireless connection is reestablished.
5. The method for controlling high-definition playing of the intelligent large-screen device according to claim 1, wherein the obtaining of the device state parameters of the intelligent large-screen device based on the wireless screen transmitter comprises:
the intelligent terminal sends a state parameter obtaining instruction to the intelligent large-screen device based on the wireless screen transmitter, and receives the device state parameter returned by the intelligent large-screen device according to the state parameter obtaining instruction based on the wireless screen transmitter.
6. The method for controlling high-definition playing of the intelligent large-screen device according to claim 1, wherein the intelligent terminal performs compression coding on the audio/video data to be played to form audio/video code stream data, and the method comprises the following steps:
the intelligent terminal separates the audio and video data to be played to obtain the audio data to be played, the video data to be played and a playing time stamp;
carrying out compression coding processing on the audio data to be played and the playing time stamp to form audio code stream data;
and carrying out compression coding processing on the video data to be played and the playing time stamp to form video code stream data.
7. The method for controlling high-definition playing of the intelligent large-screen device according to claim 6, wherein a first cache region and a second cache region are opened in the wireless screen transmitter;
the intelligent terminal controls the wireless screen transmitter to transmit the audio and video code stream data to the intelligent large-screen device for decoding and playing, and the method comprises the following steps:
the wireless screen transmitter caches the audio code stream data to a first cache region and caches the video code stream data to a second cache region;
and the intelligent terminal synchronously extracts corresponding audio code stream data and video code stream data from the first cache region and the second cache region based on the playing time stamps and sends the audio code stream data and the video code stream data to the intelligent large-screen equipment for decoding and playing.
8. A high-definition playing control system of intelligent large-screen equipment based on wireless transmission is characterized by comprising an intelligent terminal, a wireless screen transmitter and the intelligent large-screen equipment, wherein the wireless screen transmitter is connected with the intelligent terminal in a plug-in manner based on a data interface, and the intelligent terminal is connected with the intelligent large-screen equipment based on the wireless screen transmitter; the system is configured to execute the intelligent large-screen device high-definition playing control method according to any one of claims 1 to 7.
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