CN113038275A - Data transmission method, data transmission device and data transmission system - Google Patents
Data transmission method, data transmission device and data transmission system Download PDFInfo
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- CN113038275A CN113038275A CN201911357186.5A CN201911357186A CN113038275A CN 113038275 A CN113038275 A CN 113038275A CN 201911357186 A CN201911357186 A CN 201911357186A CN 113038275 A CN113038275 A CN 113038275A
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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
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/22—Parsing or analysis of headers
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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
Abstract
The invention relates to a data transmission method, a data transmission device and a data transmission system; the data transmission method includes, for example: receiving a video stream link parameter, wherein the video stream link parameter corresponds to one of a plurality of video stream transmission protocols; acquiring an initial video stream according to the video stream link parameter; processing the initial video stream to obtain processed video data; performing target format conversion on the processed video data to obtain target video data; and outputting the target video data. The invention can solve the problems that the transmission protocol format supported by video source transmission is single and the requirement of video source playing in the mainstream protocol format in the market is difficult to meet.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a data transmission method, a data transmission device, and a data transmission system.
Background
When the video splicer transmits a video source at present, the supportable transmission protocol format is single, for example, only the video source transmission of the RTSP protocol format is supported, and the requirement of playing the video source of the market mainstream protocol format is difficult to meet.
Therefore, it is an urgent technical problem to be solved by the present invention to provide a method for implementing video source transmission supporting multiple protocol formats.
Disclosure of Invention
Therefore, an embodiment of the present invention provides a data transmission method, a data transmission apparatus, a data transmission system, and a computer-readable storage medium, which can support input of video sources in multiple protocol formats, and input and output modes of the video sources are flexible, stable, and easy to expand.
Specifically, an embodiment of the present invention provides a data transmission method, where the data transmission method includes: receiving a video stream link parameter, wherein the video stream link parameter corresponds to one of a plurality of video stream transmission protocols; acquiring an initial video stream according to the video stream link parameter; processing the initial video stream to obtain processed video data; performing target format conversion on the processed video data to obtain target video data; and outputting the target video data.
In the prior art, a video splicer can support a single protocol format of an input video source, and the requirement of playing the video source in a market mainstream protocol format is difficult to meet. The embodiment of the invention obtains the initial video stream of the corresponding protocol format by receiving the video stream link parameter and processes the initial video stream to obtain the processed video data, and the processed video data is output after the target format conversion is carried out on the processed video data to obtain the target video data.
In one embodiment of the invention, the plurality of video streaming protocols includes at least two of an RTSP protocol, an ONVIF protocol, and a GB28181 protocol.
In an embodiment of the present invention, the processing the initial video stream to obtain processed video data includes: carrying out protocol analysis on the initial video stream to obtain analyzed video data; and decoding the decoded video data to obtain the processed video data.
In an embodiment of the present invention, the data format corresponding to the target video data is an RGB format.
In one embodiment of the present invention, the outputting the target video data includes outputting the target video data via a SerDes channel.
In addition, an embodiment of the present invention provides a data transmission apparatus, including: the parameter receiving module is used for receiving video stream link parameters, wherein the video stream link parameters correspond to one of a plurality of video stream transmission protocols; the video stream acquisition module is used for acquiring an initial video stream according to the video stream link parameter; the data processing module is used for processing the initial video stream to obtain processed video data; the format conversion module is used for carrying out target format conversion on the processed video data to obtain target video data; and the data output module is used for outputting the target video data.
In one embodiment of the present invention, the data processing module includes: the protocol analysis unit is used for carrying out protocol analysis on the initial video stream to obtain analyzed video data; and the data decoding unit is used for decoding the analyzed video data to obtain the processed video data.
Furthermore, an embodiment of the present invention provides a data transmission system, including: the main control card is used for sending out video stream link parameters, wherein the video stream link parameters correspond to one of a plurality of video stream transmission protocols; the data communication card is connected with the main control card and is used for receiving and forwarding the video stream link parameters; the data input card is connected with the data communication card and used for receiving the video stream link parameters, acquiring an initial video stream according to the video stream link parameters, processing the initial video stream to obtain processed video data, performing target format conversion on the processed video data to obtain target video data, transmitting the target video data to the data communication card through an input channel, determining a target output channel according to the configuration parameters sent by the main control card by the data communication card, and outputting the target video data through the target output channel; and the data output card is connected with the data communication card and used for receiving the target video data through the target output channel, and outputting the target video data after the output format conversion.
In one embodiment of the invention, the data entry card comprises: the system comprises an Ethernet interface, a microprocessor connected with the Ethernet interface and a programmable logic device connected with the microprocessor; the microprocessor is configured to receive the video stream link parameter, obtain the initial video stream via the ethernet interface according to the video stream link parameter, and process the initial video stream to obtain the processed video data; the programmable logic device is used for performing the target format conversion on the processed video data to obtain the target video data and transmitting the target video data to the data communication card through the input channel.
In an embodiment of the present invention, the data transmission system further includes: the back plate is provided with a plurality of clamping grooves which are used for connecting the main control card, the data communication card, the data input card and the data output card.
Furthermore, an embodiment of the present invention provides a data transmission system, including: a processor and a memory; wherein the memory stores instructions for execution by the processor, and the instructions cause the processor to perform operations to perform the data transmission method as described in any of the above embodiments.
Furthermore, an embodiment of the present invention provides a computer-readable storage medium, which is a non-volatile memory and stores computer-readable instructions, and the computer-readable instructions are executed by one or more processors to implement the data transmission method in any one of the above embodiments.
As can be seen from the above, the above technical solution of the present invention may have one or more of the following advantages: a) the method comprises the steps of obtaining an initial video stream of a corresponding protocol format by receiving video stream link parameters sent by a main control card, decoding the initial video stream to obtain decoded video data, and performing format conversion to uniformly obtain target video data of an RGB format, so that transmission of video sources of various protocol formats can be realized, and the transmission protocol format of the video sources is easy to expand; b) the target video data are transmitted to the data communication card, the data communication card can be respectively connected with the data input cards and the data output cards through the data input channels and the data output channels, and the data communication card determines the target output channel to output according to the configuration parameters issued by the main control card, so that the input and output channels of a video source can be selected, and the input and output modes of the video source are flexible and stable.
Drawings
Fig. 1 is a flowchart of a data transmission method according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system according to a specific implementation of the data transmission method according to the first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a data transmission device according to a second embodiment of the present invention;
FIG. 4 is a schematic diagram of a data processing module 205 of the data transmission apparatus shown in FIG. 3;
fig. 5 is a schematic structural diagram of a data transmission system according to a third embodiment of the present invention;
FIG. 6 is a schematic diagram of the structure of the data input card 33 of the data transmission system shown in FIG. 5;
fig. 7 is another schematic structural diagram of a data transmission system according to a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of a data transmission system according to a fourth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a computer-readable storage medium according to a fifth embodiment of the present invention.
Description of the reference numerals
S11-S19: a step of a data transmission method;
20: a data transmission device; 201: a parameter receiving module; 203: a video stream acquisition module; 205: a data processing module; 207: a format conversion module; 209: a data output module;
2051: a data decoding unit; 2052: a format conversion unit;
30: a data transmission system; 31: a master control card; 32: a data communication card; 33: a data input card; 34: a data output card;
331: an Ethernet interface; 332: a microprocessor; 333: a programmable logic device;
35: back plate
40: a data transmission system; 41: a processor; 42: a memory;
50: a computer readable storage medium.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The invention will be described in connection with embodiments with reference to the drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments should fall into the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the method is simple. The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the division of the embodiments of the present invention is only for convenience of description and should not be construed as a limitation, and features of various embodiments may be combined and referred to each other without contradiction.
[ first embodiment ] A method for manufacturing a semiconductor device
As shown in fig. 1, a first embodiment of the present invention proposes a data transmission method, for example, including steps S11 to S19.
Step S11: receiving a video stream link parameter, wherein the video stream link parameter corresponds to one of a plurality of video stream transmission protocols;
step S13: acquiring an initial video stream according to the video stream link parameter;
step S15: processing the initial video stream to obtain processed video data;
step S17: performing target format conversion on the processed video data to obtain target video data;
step S19: and outputting the target video data.
In step S11, for example, the data input card receives a video stream link parameter sent by the main control card, where the video stream link parameter corresponds to one of a plurality of video stream transmission protocols. The mentioned video stream link parameter includes, for example, a link address through which the data input card can acquire the video stream, and further includes, for example, a user name and a password, that is, the video stream can be encrypted, and at this time, the data input card acquires the video stream through the user name and the password. A number of video streaming protocols mentioned include, for example: RTSP protocol, ONVIF protocol and GB28181 protocol. The rtsp (real Time Streaming protocol) protocol, real Time Streaming protocol, is an application layer protocol in the TCP/IP protocol system that defines how one-to-many applications can efficiently transmit multimedia data over an IP network. The mentioned ONVIF protocol aims to promote the application of network video in the security market through a global open interface standard, and the interface standard ensures that network video products produced by different manufacturers have interoperability. The GB28181 protocol is a national standard in the field of security protection, and the standard specifies an interconnection structure and a communication protocol structure of information transmission, exchange and control in a city monitoring alarm networking system, basic requirements and safety requirements of information transmission, exchange and control, technical requirements of control, a transmission flow, a protocol interface and the like. The mentioned main control card can issue a plurality of video stream link parameters which respectively correspond to the plurality of video stream transmission protocols. The master card is, for example, a card in the card splicer under the overall control of the system, and includes, for example, a microcontroller. The data input card is, for example, a card in a card splicer, which is responsible for video input, and includes, for example, a video source input interface, a microprocessor connected to the video source input interface, and a programmable logic device connected to the microprocessor. The mentioned video stream link parameter is for example the access connection link of the original video stream.
In step S13, for example, the data input card may obtain an initial video stream according to the video stream link parameter, where the initial video stream is, for example, an online video stream, and the data input card may obtain an online video stream with a different protocol format according to a different video stream link parameter as the initial video stream.
In step S15, the data input card processes the acquired initial video stream to obtain processed video data, such as video data in the BT1120 format. Optionally, processing the initial video stream to obtain processed video data may include: and carrying out protocol removal processing on the initial video stream to obtain video data in the BT1120 format. The video data in BT1120 format is in binary information form, and the corresponding encoded signal includes: image data, timing reference code, and auxiliary data. The image data described in the BT1120 standard refers to effective size data of an image, and the timing reference code includes: SAV and EAV signals, and blanking region auxiliary data between SAV and EAV signal regions.
Further, the processing the initial video stream to obtain processed video data includes: carrying out protocol analysis on the initial video stream to obtain analyzed video data; and decoding the analyzed video data to obtain the processed video data. For example, performing protocol parsing on video streams in different video stream transmission protocols, such as RTSP protocol, ONVIF protocol, and GB28181 protocol, with reference to their corresponding video stream transmission protocols can obtain corresponding parsed video data, where the video data is, for example, a video data packet in H264 format, and decoding the video data packet to obtain processed video data, where the processed video data is, for example, video data in BT1120 format. In step S17, the target video data is, for example, RGB video data, and the target format conversion is performed on the processed video data, for example, the data input card performs format conversion on the BT1120 video data, and the color values in the RGB color space are used to represent the target video data.
Therefore, the video data of the video streams with various protocol formats can be processed to obtain the video data with the uniform target format, the transmission of video sources with various protocol formats is realized, and the transmission protocol formats of the video sources are easy to expand.
In step S19, for example, the method includes outputting the target video data via a SerDes channel. For example, the data input card transmits target video data in an RGB original format from the input channel to the data communication card, the mentioned data communication card is, for example, an AUX card for realizing data transmission in a card-insertion splicer, and the AUX card may be in communication connection with a plurality of data input cards, a plurality of data output cards and a main control card, and may be configured to receive a control instruction issued by the main control card, and forward the control instruction to the connected data input card and data output card, and forward a response of the data input card and data output card to the main control card. And simultaneously, the AUX card is connected with each data input card through an input channel, is connected with each data output card through an output channel, transmits the target video data to the AUX card through the input channel, and selects the target output channel according to the configuration parameters issued by the main control card to output the target video data to the corresponding data output card through the target output channel.
Therefore, the input and output channels of the video data can be selected according to the configuration parameters sent by the main control card, and the input and output modes of the video source are flexible and stable.
Furthermore, the mentioned input channel and target output channel are, for example, SerDes channels, which is a high-bandwidth serial communication technology, and multiple paths of low-speed parallel signals are converted into high-speed serial signals at a transmitting end, and the high-speed serial signals are converted into low-speed parallel signals again at a receiving end through a transmission medium, so that the channel capacity of the transmission medium can be fully utilized, the number of required transmission channels and device pins can be reduced, and the communication cost can be reduced.
For the convenience of understanding the present embodiment, a specific implementation of the data transmission method provided in the present embodiment is described below with reference to fig. 2.
The data transmission method provided in this embodiment is implemented in the data transmission system shown in fig. 2, for example, as shown in fig. 2, the mentioned data transmission system includes a main control card, an AUX card connected to the main control card, and an input card and an output card connected to the AUX card, where the main control card is under overall control of the system, and the AUX card is provided with a mimo switching matrix chip that adopts a serdes communication channel, for example, a crosspoint chip. The AUX card is responsible for receiving the main control card request instruction, forwarding the main control card request instruction to other cards and forwarding other card responses to the main control card, and the crosspoint chip is responsible for forwarding the video data of each input card to each output card. The input card is responsible for receiving input video, for example, receiving video data such as HDMI, DVI, online network video stream and the like, and outputting RGBA signals to a cross chip of the Aux card connected through the backboard. The output card is responsible for outputting video data, for example, receiving video data output by a crosspoint chip in the AUX card and converting the video data into video interface signals such as HDMI, DVI and DP. Among them, mentioned input cards include, for example, HDMI input cards, DVI input cards, DP input cards, and IPC input cards. Reference to output cards includes, for example, HDMI output cards, DVI output cards, DP output cards, and other output cards.
Specifically, as shown in fig. 2, the main control card issues the video stream link parameter to the data input card, for example, the IPC input card, through the AUX card, wherein the video stream link parameter corresponds to one of the RTSP protocol, the ONVIF protocol, and the GB28181 protocol, and of course, the main control card may correspondingly and respectively issue the video stream link parameters corresponding to the three transmission protocols to the IPC input card.
The mentioned IPC input card includes, for example, a processor MPU, wherein the processor MPU is connected to the ETH interface, and the MPU of the IPC input card can acquire an online video stream in the RTSP protocol, ONVIF protocol, and GB28181 protocol formats as the initial video stream through the ETH interface by using the video stream link parameter.
Further, the processor MPU decodes the initial video stream to decoded video data, for example, and performs initial format conversion on the decoded video data to obtain processed video data, for example, video data in the BT1120 format.
The IPC input card further includes, for example, a programmable logic device FPGA, the processor MPU sends the video data in the BT1120 format to the programmable logic device FPGA, and the programmable logic device FPGA performs target format conversion on the video data in the BT1120 format to obtain target video data, where the target video data is, for example, video data in an RGB format.
Furthermore, the IPC input card outputs the target video data to a cross chip of the AUX card, for example, via a SerDes channel, the AUX card may be in communication connection with a plurality of data input cards and a plurality of data output cards through the cross chip, and meanwhile, the AUX card is in communication connection with the main control card, for example, the AUX card selects a target output channel according to configuration parameters issued by the main control card, and the AUX card controls the cross chip to output the target video data to a corresponding data output card via the target output channel.
In summary, in the data transmission method provided in this embodiment, the initial video stream in the corresponding protocol format is obtained by receiving the video stream link parameter, the initial video stream is decoded to obtain the decoded video data, and format conversion is performed to uniformly obtain the target video data in the target format, so that transmission of video sources in multiple protocol formats can be achieved, and the transmission protocol formats of the video sources are easy to expand; the target video data are transmitted to the data communication card, the data communication card can be respectively connected with the data input cards and the data output cards through the data input channels and the data output channels, and the data communication card determines the target output channel to output according to the configuration parameters issued by the main control card, so that the input and output channels of the video source can be selected, and the input and output modes of the video source are flexible and stable.
[ second embodiment ]
As shown in fig. 3, a second embodiment of the present invention provides a data transmission apparatus. The data transmission device 20 includes: a parameter receiving module 201, a video stream acquiring module 203, a data processing module 205, a format conversion module 207 and a data output module 209.
The parameter receiving module 201 is configured to receive a video stream link parameter, where the video stream link parameter corresponds to one of multiple video stream transmission protocols. The video stream obtaining module 203 is configured to obtain an initial video stream according to the video stream link parameter. The data processing module 205 is configured to process the initial video stream to obtain processed video data. The format conversion module 207 is configured to perform target format conversion on the processed video data to obtain target video data. The data output module 209 is configured to output the target video data.
Further, as shown in fig. 4, the data processing module 205 includes, for example: a data decoding unit 2051, and a format conversion unit 2052. The data decoding unit 2051 is configured to decode the initial video stream to obtain decoded video data. The format conversion unit 2052 is configured to perform initial format conversion on the decoded video data to obtain the processed video data.
For specific functional details of the parameter receiving module 201, the video stream obtaining module 203, the data processing module 205, the format conversion module 207, and the data output module 209, reference may be made to the related descriptions of steps S11, S13, S15, S17, and S19 in the foregoing first embodiment, which are not described herein again. Further, it should be noted that the parameter receiving module 201, the video stream acquiring module 203, the data processing module 205, the format converting module 207 and the data outputting module 209 may be software modules, stored in a non-volatile memory and executed by a processor to perform the operations of steps S11, S13, S15, S17 and S19 in the first embodiment.
In summary, in the data transmission device according to the second embodiment of the present invention, the initial video stream in the corresponding protocol format is obtained by receiving the video stream link parameter, the initial video stream is decoded to obtain the decoded video data, and format conversion is performed to uniformly obtain the target video data in the target format, so that transmission of video sources in multiple protocol formats can be achieved, and the transmission protocol formats of the video sources are easy to expand.
[ third embodiment ]
As shown in fig. 5, a third embodiment of the present invention proposes a data transmission system. The data transmission system 30 includes, for example: a main control card 31, a data communication card 32, a data input card 33 and a data output card 34.
The main control card 31 is configured to send a video stream link parameter, where the video stream link parameter corresponds to one of multiple video stream transmission protocols. The data communication card 32 is used for connecting with the main control card 31 and receiving and forwarding the video stream link parameter. The data input card 33 is configured to connect to the data communication card 32, and is configured to receive the video stream link parameter, obtain an initial video stream according to the video stream link parameter, process the initial video stream to obtain processed video data, perform target format conversion on the processed video data to obtain target video data, transmit the target video data to the data communication card 32 through an input channel, determine a target output channel according to the configuration parameter sent by the main control card 31 by the data communication card 32, and output the target video data through the target output channel. The data output card 34 is used for connecting the data communication card 32, and is used for receiving the target video data, and outputting the target video data after performing output format conversion.
In particular, the master card 31 is under the overall control of the system, for example comprising a microcontroller. The data communication card 32 is responsible for communication interaction between cards in the system, and includes, for example, a routing chip, i.e., a mimo switching matrix chip. The data output cards 34 are plural, for example, and include output cards different in the type of video source output interface such as an HDMI output card, a DVI output card, and a DP output card. The HDMI output card includes, for example, an HDMI video source output interface. The DVI output card includes, for example, a DVI video source output interface. The DP output card includes, for example, a DP video source output interface.
Further, as shown in fig. 6, the mentioned data input card 33 includes: an ethernet interface 331, a microprocessor 332 coupled to the ethernet interface 331, and a programmable logic device 333 coupled to the microprocessor 332. The microprocessor 332 is configured to receive the video stream link parameter, obtain an initial video stream through the ethernet interface 331 according to the video stream link parameter, and process the initial video stream to obtain processed video data. The programmable logic device 333 is configured to perform target format conversion on the processed video data to obtain target video data, and transmit the target video data to the data communication card 32 via the input channel.
The ethernet interface 331 is, for example, an Eth-Trunk interface. The microprocessor mentioned is, for example, an MPU. The programmable logic device mentioned is for example an FPGA.
It should be noted that the system according to this embodiment may include other types of data input cards, such as an HDMI input card, a DVI input card, and a DP input card, in addition to the above-mentioned types of data input cards. The HDMI input card includes, for example, an HDMI video source input interface and a programmable logic device. DVI input cards include, for example, DVI video source input interfaces and programmable logic devices. The DP input card includes, for example, a DP video source input interface and a programmable logic device.
Further, as shown in fig. 7, the data transmission system 30 further includes a back board 35, which is provided with a plurality of card slots, and the card slots are used for connecting the main control card 31, the data communication card 32, the data input card 33, and the data output card 34.
The data transmission system provided in this embodiment is used to implement the relevant description of the data transmission method described in the first embodiment, and the specific implementation of the data transmission system provided in this embodiment may refer to the system architecture related to the specific implementation in the first embodiment, which is not described herein again.
In summary, the data input card of the data transmission system disclosed in this embodiment obtains the initial video stream in the corresponding protocol format by receiving the video stream link parameter, decodes the initial video stream to obtain the decoded video data, and performs format conversion to unify the decoded video data to obtain the target video data in the target format, so that transmission of video sources in multiple protocol formats can be achieved, and the transmission protocol formats of the video sources are easy to expand; the target video data are transmitted to the data communication card, the data communication card can be respectively connected with the data input cards and the data output cards through the data input channels and the data output channels, and the data communication card determines the target output channel to output according to the configuration parameters issued by the main control card, so that the input and output channels of the video source can be selected, and the input and output modes of the video source are flexible and stable.
[ fourth example ] A
Fig. 8 is a data transmission system according to a fourth embodiment of the present invention. As shown in fig. 8, the data transmission system 40 includes: a memory 42 and one or more processors 41 coupled to the memory 42. The memory 42 stores a computer program, and the processor 41 is configured to execute the computer program to implement the data transmission method according to the first embodiment, which is not described herein again for brevity, and the beneficial effects of the data transmission system 40 provided in this embodiment are the same as those of the data transmission method provided in the first embodiment.
[ fifth embodiment ]
Fig. 9 is a computer-readable storage medium according to a seventh embodiment of the present invention. As shown in fig. 9, the computer-readable storage medium 50 is a non-volatile memory and stores computer-readable instructions which, when executed by one or more processors, for example, cause the one or more processors to execute the data transmission method described in the foregoing first embodiment. For the sake of brevity, details of the specific data transmission method may refer to the method described in the first embodiment, and beneficial effects of the computer-readable storage medium 50 provided in this embodiment are the same as those of the data transmission method provided in the first embodiment.
In addition, it should be understood that the foregoing embodiments are merely exemplary illustrations of the present invention, and the technical solutions of the embodiments can be arbitrarily combined and collocated without conflict between technical features and structural contradictions, which do not violate the purpose of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and/or method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units/modules is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units/modules described as separate parts may or may not be physically separate, and parts displayed as units/modules may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units/modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, each functional unit/module in the embodiments of the present invention may be integrated into one processing unit/module, or each unit/module may exist alone physically, or two or more units/modules may be integrated into one unit/module. The integrated units/modules may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units/modules.
The integrated units/modules, which are implemented in the form of software functional units/modules, may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing one or more processors of a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; 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. A method of data transmission, comprising:
receiving a video stream link parameter, wherein the video stream link parameter corresponds to one of a plurality of video stream transmission protocols;
acquiring an initial video stream according to the video stream link parameter;
processing the initial video stream to obtain processed video data;
performing target format conversion on the processed video data to obtain target video data; and
and outputting the target video data.
2. The data transmission method according to claim 1, wherein the plurality of video streaming protocols include at least two of RTSP protocol, ONVIF protocol, and GB28181 protocol.
3. The data transmission method according to claim 1, wherein the processing the initial video stream to obtain processed video data comprises:
carrying out protocol analysis on the initial video stream to obtain analyzed video data;
and decoding the analyzed video data to obtain the processed video data.
4. The data transmission method according to claim 1, wherein the data format corresponding to the target video data is RGB format.
5. The data transmission method according to claim 1, wherein the outputting the target video data includes:
outputting the target video data via a SerDes channel.
6. A data transmission apparatus, comprising:
the parameter receiving module is used for receiving video stream link parameters, wherein the video stream link parameters correspond to one of a plurality of video stream transmission protocols;
the video stream acquisition module is used for acquiring an initial video stream according to the video stream link parameter;
the data processing module is used for processing the initial video stream to obtain processed video data;
the format conversion module is used for carrying out target format conversion on the processed video data to obtain target video data;
and the data output module is used for outputting the target video data.
7. The data transmission apparatus according to claim 6, wherein the data processing module comprises:
the protocol analysis unit is used for carrying out protocol analysis on the initial video stream to obtain analyzed video data;
and the data decoding unit is used for decoding the analyzed video data to obtain the processed video data.
8. A data transmission system, comprising:
the main control card is used for sending out video stream link parameters, wherein the video stream link parameters correspond to one of a plurality of video stream transmission protocols;
the data communication card is connected with the main control card and is used for receiving and forwarding the video stream link parameters;
the data input card is connected with the data communication card and used for receiving the video stream link parameters, acquiring an initial video stream according to the video stream link parameters, processing the initial video stream to obtain processed video data, performing target format conversion on the processed video data to obtain target video data, transmitting the target video data to the data communication card through an input channel, determining a target output channel according to the configuration parameters sent by the main control card by the data communication card, and outputting the target video data through the target output channel;
and the data output card is connected with the data communication card and used for receiving the target video data through the target output channel, and outputting the target video data after the output format conversion.
9. The data transmission system of claim 8, the data input card comprising: the system comprises an Ethernet interface, a microprocessor connected with the Ethernet interface and a programmable logic device connected with the microprocessor;
the microprocessor is configured to receive the video stream link parameter, obtain the initial video stream via the ethernet interface according to the video stream link parameter, and process the initial video stream to obtain the processed video data;
the programmable logic device is used for performing the target format conversion on the processed video data to obtain the target video data and transmitting the target video data to the data communication card through the input channel.
10. The data transmission system of claim 8, further comprising:
the back plate is provided with a plurality of clamping grooves which are used for connecting the main control card, the data communication card, the data input card and the data output card.
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