CN112202915A - Audio-visual play system based on thing networking cloud platform - Google Patents
Audio-visual play system based on thing networking cloud platform Download PDFInfo
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- CN112202915A CN112202915A CN202011091985.5A CN202011091985A CN112202915A CN 112202915 A CN112202915 A CN 112202915A CN 202011091985 A CN202011091985 A CN 202011091985A CN 112202915 A CN112202915 A CN 112202915A
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- GJWAPAVRQYYSTK-UHFFFAOYSA-N [(dimethyl-$l^{3}-silanyl)amino]-dimethylsilicon Chemical compound C[Si](C)N[Si](C)C GJWAPAVRQYYSTK-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/084—Configuration by using pre-existing information, e.g. using templates or copying from other elements
- H04L41/0846—Configuration by using pre-existing information, e.g. using templates or copying from other elements based on copy from other elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0643—Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
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Abstract
The application provides a video and audio playing system based on an Internet of things cloud platform. The audio-visual play system based on the Internet of things cloud platform comprises: the system comprises an Internet of things cloud platform and a broadcast control terminal; the Internet of things cloud platform comprises an abstract model module and a control module, wherein the abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to one broadcast control terminal connected with the Internet of things cloud platform; the control module is used for respectively sending the control information of the playing terminal for each playing control terminal; each playing control terminal which acquires the playing terminal control information works according to the playing terminal control information and sends the parameter configuration change information of the playing control terminal to the Internet of things cloud platform; the abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information, so that the abstract model and the corresponding broadcast control terminal have the same state. The method and the device enable the client to clearly know the condition of the broadcast control terminal and control the broadcast control terminal.
Description
Technical Field
The application belongs to the technical field of video playing, and particularly relates to a video and audio playing system based on an Internet of things cloud platform.
Background
In the prior art, a user cannot control or observe the state of the broadcast control terminal through a remote place generally.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide a video and audio playing system based on an internet of things cloud platform so as to solve the problem of at least one aspect.
In a first aspect of the present application, an audio-visual playback system based on an internet of things cloud platform includes:
an Internet of things cloud platform;
each broadcast control terminal is connected with the Internet of things cloud platform and each broadcast control terminal is connected with a server side;
the Internet of things cloud platform comprises an abstract model module and a control module, wherein,
the abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to one broadcast control terminal connected with the Internet of things cloud platform;
the control module is used for respectively sending playing terminal control information to each playing control terminal;
each playing control terminal which acquires the playing terminal control information works according to the playing terminal control information and sends the parameter configuration change information of the playing control terminal to the Internet of things cloud platform;
the abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information, so that the abstract model and the corresponding broadcast control terminal have the same state.
Optionally, the audio-visual playing system based on the internet of things cloud platform further includes:
the system comprises a plurality of local area network client sides, wherein one local area network client side is connected with one or more broadcast control terminals and is used for sending control instructions to the broadcast control terminals;
and the broadcast control terminal is used for working according to the control instruction.
Optionally, the broadcast control terminal is configured to send parameter configuration change information of the broadcast control terminal to the internet of things cloud platform after working according to the control instruction.
Optionally, the playback terminal control information includes url address information of the network stream to be played.
Optionally, after acquiring url address information of the network stream to be played, the broadcast control terminal sends a connection request to the server to request connection of a designated url corresponding to the url address information;
the server side sends encrypted address information to the broadcast control terminal after receiving the connection request, wherein the encrypted address information comprises code stream name information, starting time, terminating time and an equipment unique key;
and after receiving the encrypted address information, the broadcast control terminal acquires broadcast data from a server according to the encrypted address information within the time from the starting time to the ending time.
Optionally, after receiving the encrypted address information, the broadcast control terminal further includes, before acquiring data from the server according to the encrypted address information within the time from the start time to the end time:
and acquiring the starting time from the encrypted address information, comparing the starting time with the system time of the server, and acquiring playing data from the server according to the encrypted address information within the time from the starting time to the ending time if the starting time is the same as the system time of the server.
Optionally, the start time is obtained from the encrypted address information and compared with the system time of the broadcast control terminal, if the start time is different from the system time of the broadcast control terminal, the broadcast control terminal sends the system time of the broadcast control terminal to the server and stops sending the system time of the broadcast control terminal within the start time to the end time, and broadcast data is obtained from the server according to the encrypted address information.
Optionally, the server acquires the system time of the broadcast control terminal sent by the broadcast control terminal and changes the system time of the broadcast control terminal according to the system time of the broadcast control terminal, so that after the system time of the server is consistent with the system time of the broadcast control terminal, new encrypted address information is generated and sent to the broadcast control terminal, and the broadcast control terminal acquires play data from the server according to the new encrypted address information.
Optionally, the video-audio playing system based on the internet of things cloud platform further includes a plurality of projectors, one playing control terminal is connected to the plurality of projectors, and each playing control terminal is configured to change resolution of playing data acquired from the server and transmit the playing data to the projector so as to play the playing data by the projector.
Optionally, the transmitting, by the broadcast control terminal, the resolution of the playing data obtained from the server is changed and the playing data is transmitted to the projector, so that the projector plays the playing data includes:
acquiring a preset resolution required by a projector;
acquiring a playing video;
and sending the played video to a projector according to the preset resolution.
The application has at least the following beneficial technical effects:
the audio-visual play system based on the internet of things cloud platform generates the abstract model on the internet of things cloud platform, a client can transmit an instruction to the cloud platform on the one hand, the cloud platform transmits the instruction to the broadcast control terminal to control the broadcast control terminal, on the one hand, the broadcast control terminal transmits parameter configuration change information to the cloud platform according to the change of the client, and the cloud platform changes the abstract model according to the parameter configuration change information, so that the client can clearly know the condition of the broadcast control terminal and control the broadcast control terminal.
Drawings
Fig. 1 is a schematic structural diagram of a video and audio playing system based on an internet of things cloud platform according to an embodiment of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. 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 application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that the terms "first" and "second" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic structural diagram of a video and audio playing system based on an internet of things cloud platform according to an embodiment of the present application.
The audio-video playing system based on the internet of things cloud platform as shown in fig. 1 comprises the internet of things cloud platform 1 and a plurality of playing control terminals 2, wherein each playing control terminal 2 is connected with the internet of things cloud platform, and each playing control terminal 2 is connected with a server 3; the internet of things cloud platform 1 comprises an abstract model module and a control module, wherein the abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to one broadcast control terminal connected with the internet of things cloud platform; the control module is used for respectively sending the control information of the playing terminal for each playing control terminal; each playing control terminal which acquires the playing terminal control information works according to the playing terminal control information and sends the parameter configuration change information of the playing control terminal to the Internet of things cloud platform; the abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information, so that the abstract model and the corresponding broadcast control terminal have the same state.
The audio-visual play system based on the internet of things cloud platform generates the abstract model on the internet of things cloud platform, a client can transmit an instruction to the cloud platform on the one hand, the cloud platform transmits the instruction to the broadcast control terminal to control the broadcast control terminal, on the one hand, the broadcast control terminal transmits parameter configuration change information to the cloud platform according to the change of the client, and the cloud platform changes the abstract model according to the parameter configuration change information, so that the client can clearly know the condition of the broadcast control terminal and control the broadcast control terminal.
In this implementation, the audio-video playing system based on the internet of things cloud platform further includes a plurality of local area network clients 4, and one local area network client is connected with one or more playing control terminals and is used for sending a control instruction to the playing control terminal; and the broadcast control terminal is used for working according to the control instruction.
In the implementation, the broadcast control terminal is used for sending the parameter configuration change information of the broadcast control terminal to the internet of things cloud platform after working according to the control instruction.
In this implementation, the playback terminal control information includes url address information of a network stream to be played.
In this embodiment, the broadcast control terminal and the internet of things cloud platform keep heartbeat and signaling interaction through MQTT. And establishing an abstract model which is the same as that of the broadcast control terminal on the Internet of things cloud platform, wherein the state of the abstract model is completely consistent with that of the broadcast control terminal. And the broadcast control terminal is on-line, off-line and state change are synchronized to the cloud platform through an Mqtt protocol.
During actual use, a client sends parameters to the Internet of things cloud platform in an API calling mode through the remote PC browser, and sends the broadcast control terminal after forwarding through the Internet of things cloud platform. For example, the url address of the network stream to be played is sent to the broadcast control terminal, and the broadcast control terminal receives the information and then decodes and displays the data from the designated url of the internet.
In this embodiment, after acquiring url address information of a network stream to be played, a broadcast control terminal sends a connection request to a server to request to connect a designated url corresponding to the url address information;
the server side sends encrypted address information to the broadcast control terminal after receiving the connection request, wherein the encrypted address information comprises code stream name information, starting time, terminating time and a unique device key;
and after receiving the encrypted address information, the broadcast control terminal acquires the broadcast data from the server according to the encrypted address information within the time from the starting time to the ending time.
In this embodiment, the server generates the encrypted address information by using the MD5 code.
By adopting the method, the link stealing caused by URL leakage can be prevented, because the URL is known in time except the termination time, and the server cannot be connected to obtain the playing data.
In this embodiment, after receiving the encrypted address information, the broadcast control terminal further includes, before acquiring data from the server according to the encrypted address information within the time from the start time to the end time:
and acquiring the starting time from the encrypted address information, comparing the starting time with the system time of the server, and acquiring playing data from the server according to the encrypted address information within the time from the starting time to the ending time if the starting time is the same as the system time of the server.
In this embodiment, the start time is obtained from the encrypted address information and compared with the system time of the broadcast control terminal, and if the start time is different from the system time of the broadcast control terminal, the broadcast control terminal sends the system time of the broadcast control terminal to the server and stops sending the system time of the broadcast control terminal from the start time to the end time, and the broadcast data is obtained from the server according to the encrypted address information.
In this embodiment, the server acquires the system time of the broadcast control terminal sent by the broadcast control terminal 2 and changes the system time of the broadcast control terminal according to the system time of the broadcast control terminal, so that after the system time of the server is consistent with the system time of the broadcast control terminal, new encrypted address information is generated and sent to the broadcast control terminal, so that the broadcast control terminal acquires broadcast data from the server according to the new encrypted address information.
In this way, it can be ensured that the time of both is the same without system confusion.
In this embodiment, the video-audio playing system based on the internet of things cloud platform further includes a plurality of projectors 5, one broadcast control terminal is connected with a plurality of projectors, and each broadcast control terminal is used for changing the resolution of the playing data acquired from the server and then transmitting the playing data to the projectors so that the projectors can play.
In this embodiment, the playing control terminal is configured to change the resolution of the playing data acquired from the server and transmit the changed resolution to the projector so that the projector plays the data, and the playing control method includes:
acquiring a preset resolution required by a projector;
acquiring a playing video;
the broadcast video is sent to the projector 5 at a preset resolution.
The broadcast control terminal sends the played video to the projector according to the preset resolution required by the projector 5, so that the projector can play the video formed according to the resolution, the projection effect is better, and the played picture is more real.
In this embodiment, acquiring the playing video includes:
in this embodiment, sending the playing video to the projector at the preset resolution includes:
when the resolution of the played video is different from the preset resolution, changing the resolution of the played video to the preset resolution, so as to generate the played video with the preset resolution;
and sending the playing video with the preset resolution to the projector.
In this embodiment, sending the played video to the projector at the preset resolution further comprises: and when the resolution of the played video is the same as the preset resolution, transmitting the played video to a projector for playing.
Through the method, the self-adaptive playing terminal playing method sends the played video to the projector according to the preset resolution required by the projector 5, so that the projector can play the video formed according to the resolution, the playing effect is better, and the played picture is more real.
In this embodiment, the typical preset resolution is 4096 × 2016; 2048 × 1080; 1280 x 1024, etc.
If a data source is obtained from the internet in the embodiment and the resolution of the played video is different from the preset resolution, the internet source address of the data source is analyzed, the streaming media protocol is analyzed, and the received data is unpacked into raw data;
and analyzing the internet source Url address in the configuration file in the storage of the slave equipment according to the format of Url.
For example, the addresses of RTMP video sources are:
rtmp://pl.shxit.cn/live/CM180521904170009F0197C1。
such as address of HLS video source:
rtmp://pl.shxit.cn/live/CM180521904170009F0197C1.m3u8。
and judging the format of the network flow according to the prefix and the suffix of the Url address, calling a corresponding analysis program to unpack the data flow, and analyzing the real video raw data from the encapsulated network flow.
raw data is compressed video data, and we need to decompress it and restore it to non-compressed data. Data transmitted on the network must be compressed data, because the data volume of uncompressed data is very large and cannot be transmitted on the network. And analyzing the mark data of the raw data to judge whether the mark data belongs to one of H.264/H.265/MPEG. Then the data is sent to a corresponding decoding program for decoding to obtain the non-compressed data.
The non-compressed video data is output through HDMI, and the non-compressed audio is output through audio interface
The uncompressed data is carried to a VPSS video processing subsystem of the chip through a DMA inside the chip, and is subjected to noise reduction, sharpening, histogram adjustment and color space conversion and then is sent to a VO processing system, the VO calls a hardware data coding module, the original data forms a BT1120 signal which accords with an HDMI output standard and is sent to an HDMI output PHY, and finally the signal is modulated into a TMDS differential signal by the HDMI PHY, so that the signal which can be transmitted in an HDMI cable can be sent to a projector for projection.
In the above process, the resolution of the video to be played is changed to the preset resolution.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a video-audio playing system based on thing networking cloud platform which characterized in that, video-audio playing system based on thing networking cloud platform includes:
an Internet of things cloud platform;
each broadcast control terminal is connected with the Internet of things cloud platform and each broadcast control terminal is connected with a server side;
the Internet of things cloud platform comprises an abstract model module and a control module, wherein,
the abstract model module is used for generating abstract models of a plurality of broadcast control terminals, and each abstract model corresponds to one broadcast control terminal connected with the Internet of things cloud platform;
the control module is used for respectively sending playing terminal control information to each playing control terminal;
each playing control terminal which acquires the playing terminal control information works according to the playing terminal control information and sends the parameter configuration change information of the playing control terminal to the Internet of things cloud platform;
the abstract model module is further used for changing the abstract model of the corresponding broadcast control terminal according to the parameter configuration change information, so that the abstract model and the corresponding broadcast control terminal have the same state.
2. The internet-of-things cloud platform based audiovisual playback system of claim 1, further comprising:
the system comprises a plurality of local area network client sides, wherein one local area network client side is connected with one or more broadcast control terminals and is used for sending control instructions to the broadcast control terminals;
and the broadcast control terminal is used for working according to the control instruction.
3. The audio-visual playing system based on the internet of things cloud platform as claimed in claim 2, wherein the playing control terminal is configured to send the parameter configuration change information to the internet of things cloud platform after working according to the control instruction.
4. The video and audio playing system based on the internet of things cloud platform as claimed in claim 2, wherein the playing terminal control information includes url address information of the network stream to be played.
5. The video-audio playing system based on the internet-of-things cloud platform according to claim 4, wherein the playing control terminal sends a connection request to the server to request connection of a designated url corresponding to url address information after acquiring the url address information of the network stream to be played;
the server side sends encrypted address information to the broadcast control terminal after receiving the connection request, wherein the encrypted address information comprises code stream name information, starting time, terminating time and an equipment unique key;
and after receiving the encrypted address information, the broadcast control terminal acquires broadcast data from a server according to the encrypted address information within the time from the starting time to the ending time.
6. The video-audio playing system based on the internet-of-things cloud platform of claim 5, wherein after receiving the encrypted address information, the playing control terminal further comprises, within the time from the start time to the end time, before acquiring data from the server according to the encrypted address information:
and acquiring the starting time from the encrypted address information, comparing the starting time with the system time of the server, and acquiring playing data from the server according to the encrypted address information within the time from the starting time to the ending time if the starting time is the same as the system time of the server.
7. The audio-visual playing system based on the internet of things cloud platform as claimed in claim 6, wherein the start time is obtained from the encrypted address information and compared with the system time of the playing terminal, if the start time is different from the system time of the playing terminal, the playing control terminal sends the system time of the playing terminal to the server and stops sending the system time of the playing terminal within the start time to the end time, and playing data is obtained from the server according to the encrypted address information.
8. The audio-visual playing system based on the internet of things cloud platform as claimed in claim 7, wherein the server obtains the system time of the playing control terminal sent by the playing control terminal and changes the system time of the server according to the system time of the playing control terminal, so that new encrypted address information is generated and sent to the playing control terminal after the system time of the server is consistent with the system time of the playing control terminal, and the playing control terminal obtains playing data from the server according to the new encrypted address information.
9. The audio-visual playing system based on the internet of things cloud platform of claim 5, wherein the audio-visual playing system based on the internet of things cloud platform further comprises a plurality of projectors, one playing control terminal is connected with the plurality of projectors, and each playing control terminal is used for changing the resolution of the playing data acquired from the server and transmitting the playing data to the projector so as to enable the projector to play.
10. The video and audio playing system based on the internet of things cloud platform of claim 9, wherein the playing control terminal is configured to change the resolution of the playing data obtained from the server and transmit the changed resolution to the projector so that the projector plays the video and audio data, and the playing control terminal comprises:
acquiring a preset resolution required by a projector;
acquiring a playing video;
and sending the played video to a projector according to the preset resolution.
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