WO2022241675A1 - 数据分发方法、终端设备以及计算机可读存储介质 - Google Patents

数据分发方法、终端设备以及计算机可读存储介质 Download PDF

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Publication number
WO2022241675A1
WO2022241675A1 PCT/CN2021/094657 CN2021094657W WO2022241675A1 WO 2022241675 A1 WO2022241675 A1 WO 2022241675A1 CN 2021094657 W CN2021094657 W CN 2021094657W WO 2022241675 A1 WO2022241675 A1 WO 2022241675A1
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data
receiving end
audio
receiving
data request
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PCT/CN2021/094657
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English (en)
French (fr)
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周玉龙
吴嵩
贾正东
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深圳爱特天翔科技有限公司
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Priority to PCT/CN2021/094657 priority Critical patent/WO2022241675A1/zh
Publication of WO2022241675A1 publication Critical patent/WO2022241675A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution

Definitions

  • the present application relates to the technical field of network audio and video transmission, and in particular to a data distribution method, a terminal device, and a computer-readable storage medium.
  • the network-based audio and video transmission system consists of a sending end and a receiving end.
  • the sending end samples and encodes the audio and video signals to be transmitted into compressed audio and video data, and then transmits them to the receiving end, which decodes and outputs them.
  • many applications need to distribute audio and video data generated by one sending end to multiple receiving ends, so as to realize one-to-many applications.
  • the sending end needs to establish a TCP (Transmission Control Protocol, Transmission Control Protocol) or UDP (User Datagram Protocol, User Datagram Protocol) unicast connection with each receiving end through the sending end unicast distribution method, and the audio and video data Multiple copies are made and sent separately to the receiving end via these connections.
  • TCP Transmission Control Protocol
  • UDP User Datagram Protocol
  • This audio and video data distribution method has relatively high requirements on the processor, memory capacity, and network bandwidth of the sending end.
  • the number of video distributions is limited, and the maximum number of receiving ends is limited, which makes the distribution capacity of the sending end more demanding. is too big.
  • the present application provides a data distribution method, a terminal device, and a computer-readable storage medium.
  • the first technical solution provided by this application is to provide a data distribution method, the data distribution method is applied to the sending end of an audio and video transmission system, and the sending end and several first receiving end, several second receiving end communication connections; the data distribution method includes:
  • the second technical solution provided by this application is to provide another data distribution method, the data distribution method is applied to an audio and video transmission system, wherein the audio and video transmission system includes a sending end 1.
  • the audio and video transmission system includes a sending end 1.
  • the data distribution method includes:
  • the first receiving end sends a first data request signal to the sending end to request distribution of audio and video data
  • the sending end receives the first data request signal from the first receiving end, and judges whether the currently occupied distribution capacity value reaches the maximum distribution capacity value;
  • the sending end If not, the sending end returns request success response information to the first receiving end based on the first data request signal, and distributes the audio and video data to the first receiving end;
  • the sending end returns request failure response information and the data request receiving address of the second receiving end that has distributed audio and video data to the first receiving end based on the first data request signal;
  • the first receiving end sends a second data request signal based on the data request receiving address of the second receiving end;
  • the second receiving end distributes the audio and video data to the first receiving end based on the second data request signal.
  • the third technical solution provided by the present application is to provide a terminal device, the terminal device includes a processor and a memory connected to the processor, wherein the memory stores program instructions;
  • the processor is configured to execute program instructions stored in the memory to achieve: acquiring a first data request signal from the first receiving end;
  • the fourth technical solution provided by this application is to provide a computer-readable storage medium, the storage medium stores program instructions, and when the program instructions are executed, it is realized: to obtain information from the first The first data request signal of the receiving end;
  • the data distribution method provided by this application obtains the first data request signal from the first receiving end; judges whether the currently occupied distribution capacity value reaches the maximum distribution capacity value, and measures the distribution capacity of the sending end by the distribution capacity value, which is beneficial to the sending end Carry out control to prevent the problem of sending failure or sending error; if so, return the request failure response information and the data request receiving address of the second receiving end that has distributed audio and video data based on the first data request signal, so that the second receiving end sends
  • the first receiving end distributes the audio and video data; if not, return request success response information based on the first data request signal, and distribute the audio and video data to the first receiving end.
  • the present application distributes data through the second receiving end, which reduces the distribution capacity requirement of the sending end, and helps reduce the hardware cost and complexity of the audio and video transmission system.
  • FIG. 1 is a schematic flow diagram of an embodiment of a data distribution method provided by the present application
  • Fig. 2 is a schematic structural diagram of an embodiment of an audio and video transmission system provided by the present application.
  • FIG. 3 is a schematic flowchart of another embodiment of the data distribution method provided by the present application.
  • FIG. 4 is a schematic flowchart of another embodiment of the data distribution method provided by the present application.
  • FIG. 5 is a schematic structural diagram of an embodiment of a terminal device provided by the present application.
  • FIG. 6 is a schematic structural diagram of another embodiment of a terminal device provided by the present application.
  • Fig. 7 is a schematic structural diagram of a computer-readable storage medium provided by the present application.
  • FIG. 1 is a schematic flowchart of an embodiment of a data distribution method provided in this application
  • FIG. 2 is a schematic structural diagram of an embodiment of an audio and video transmission system provided in this application.
  • the audio and video transmission system provided in the embodiment of the present application is a one-to-many transmission system, and the audio and video transmission system is specifically composed of one transmitting end TX1 and N receiving ends RX1, RX2, . . . , RXN. Wherein, the sending end TX1 and the N receiving ends RX1, RX2, .
  • the network IP address of the sending end TX1 is IP0
  • the network IP addresses of the N receiving ends RX1, RX2, ..., RXN are respectively IP1, IP2, ..., IPN, and the sending end and the receiving end can visit each other through the IP addresses.
  • Both the sending end and the receiving end are equipped with a program controller, and implement the process of the data distribution method in the embodiment of the present application by running the program module.
  • the sending end is used as the execution subject of the data distribution method
  • the first receiving end represents the receiving end of the audio and video data to be distributed
  • the second receiving end represents the receiving end of the distributed audio and video data.
  • Step S11 Obtain a first data request signal from the first receiving end.
  • the sending end obtains the audio and video signal to be transmitted through the audio and video source, samples and encodes the audio and video signal to be transmitted, compresses it into audio and video data, and distributes the data.
  • the sending end has a data distribution program module, and after compressing and encoding the audio and video signals into audio and video data, the sending end distributes the data through the data distribution program module.
  • the receiving end of the embodiment of the present application has a data request program module and a data distribution program module, and the receiving end sends a first data request signal to the sending end through the data requesting program module to request the sending end to distribute audio and video data to the receiving end. Further, after the receiving end acquires the audio and video data, on the one hand, it can decode and output the acquired audio and video data, and on the other hand, it can distribute the acquired audio and video data to other receiving ends through the data distribution program module. Since both the sending end and the receiving end have data distribution program modules, the sending end or any receiving end can become a data distribution device.
  • the sending end presets the TCP port through the listening program of the data distribution program module, and waits for and receives the first data request signal from the first receiving end.
  • the first data request signal is a message sent by a receiving end to obtain data
  • the data request signal includes the data request receiving address of the first receiving end
  • the data request receiving address of the first receiving end includes the network IP address of the first receiving end And data request listening TCP port.
  • the data request receiving address of the data distribution device whose network IP address is ip and listens to the TCP port of p is denoted as (ip, p).
  • the data request receiving ports of the transmitting end TX1 and the N receiving ends RX1, RX2, ..., RXN are respectively p0, p1, p2, ...pN
  • the corresponding data request receiving addresses are (ip0, p0) , (ip1, p1), (ip2, p2), ..., (ipN, pN).
  • Step S12 Judging whether the currently occupied distribution capacity value reaches the maximum distribution capacity value.
  • the data distribution program module is set with a process parameter of the currently occupied distribution capacity
  • the currently occupied distribution capacity is the value of the distribution capacity drop caused by the data distribution program module of a data distribution device distributing data to the data requesting end.
  • the maximum distribution capability value of the data distribution device is the maximum number of connections that the distribution device can simultaneously maintain for audio and video data transmission
  • the currently occupied distribution capability value is the number of connections that the distribution device currently holds for audio and video data transmission.
  • the maximum number of TCP connections for audio and video data transmission that the data distribution program module of the data distribution device can maintain can be used as its maximum distribution capability value, denoted as E; the number of TCP connections that have been established with the data requesting device As the value of the currently occupied distribution capacity, it is recorded as K.
  • the value range of the occupied distribution capacity value of the data distribution device is between 0 and the maximum distribution capacity value, and the currently occupied distribution capacity value can be used to measure the real-time distribution capacity of the data distribution device.
  • the distribution capability of the data distribution device can be determined through experiments or calculations and allows each data distribution device to have different distribution capabilities.
  • the way of program preset is pre-stored in each data distribution device.
  • the occupied distribution capacity There may be a conversion relationship between the occupied distribution capacity and the number of established data distribution links, and it is obtained through calculation during the process of processing data requests by the data distribution device.
  • the number of established TCP connections for data distribution is used as the occupied distribution capacity.
  • the number of TCP connections for data distribution is increased by 1, and the value of the occupied distribution capacity is increased by 1 accordingly.
  • the sending end When the sending end obtains the first data request signal from the first receiving end, it detects whether its own currently occupied distribution capacity value reaches the maximum distribution capacity value. If the currently occupied distribution capacity value of the sending end does not reach the maximum distribution capacity value, proceed to step S14; if the currently occupied distribution capacity value of the sending end reaches the maximum distribution capacity value, proceed to step S13.
  • Step S13 Based on the first data request signal, return request failure response information and the data request receiving address of the second receiving end that has already distributed the audio and video data, so that the second receiving end distributes the audio and video data to the first receiving end.
  • the request result in the embodiment of the present application includes two types: data request success and data request failure.
  • the sending end needs to return a request result that the data request fails to the first receiving end.
  • the request result of the data request failure includes request failure response information and the data request receiving address of one of the second receiving ends, so that the first receiving end can request the distribution of audio and video data from the second receiving end, at this time, the The second receiving end is used as a data distribution device to distribute audio and video data.
  • the data distribution program module also includes the process parameters of the event distribution device record table, and the sender can use the event distribution device record table to select a suitable second receiver as the data distribution device of the first receiver.
  • the first entry in the activity distribution device record table is the data request receiving address of the device where the data distribution program module is located.
  • the entry is the data request receiving addresses of all the second receiving ends that have distributed the audio and video data from the data distribution program module.
  • the activity distribution device record table is marked as A, and the mth entry in the table is represented by A(m), and A(0) is the data request receiving address of the device where the data distribution program module is located.
  • Figure 3 is a schematic flow diagram of another embodiment of the data distribution method provided by this application .
  • Step S21 Establish an event distribution device record table, wherein the event distribution device record table includes at least the data request receiving address of the receiving end.
  • the sender establishes an activity distribution device record table, and the first entry is the data request receiving address of the sender.
  • Step S22 Obtain second data request information from the second receiving end.
  • Step S23 Distribute audio and video data to the second receiving end based on the second data request information of the second receiving end, and record the receiving address of the data request of the second receiving end in the activity distribution device record table.
  • the sending end directly distributes audio and video data to the second receiving end, and records the data request receiving address of the second receiving end in the active distribution device record table.
  • Step S24 When the currently occupied distribution capacity value reaches the maximum distribution capacity value, select any data request receiving address of the second receiving end from the active distribution device record table.
  • the sending end selects any second receiving end and its data request receiving address in the active distribution device record table A(i), i>0.
  • Step S25 Return request failure response information and the data request receiving address of the second receiving end to the first receiving end, so that the first receiving end sends a third data request signal to the second receiving end based on the data request receiving address of the second receiving end, The second receiving end distributes audio and video data to the first receiving end based on the third data request signal.
  • the sending end returns the request result of data request failure to the first receiving end, and disconnects this data request TCP connection with the first receiving end, and the request result includes A(i), denoted as Ack(Fail, A(i) ).
  • the first receiving end acquires A(i) in Ack(Fail, A(i)), and based on this, sends a third data request signal to the second receiving end.
  • the second receiving end judges that its own distribution capacity value has not reached the maximum distribution capacity value, it can distribute audio and video data to the first receiving end.
  • Step S14 Return request success response information based on the first data request signal, and distribute audio and video data to the first receiving end.
  • the data distribution program module of the sending end maintains the current data request TCP connection with the first receiving end, and returns a successful data request request to the first receiving end
  • the result is Ack(Success, A(0)), the audio and video data can be distributed directly after the successful response.
  • the sending end In the process of distributing audio and video data, the sending end needs to increase the currently occupied distribution capacity value, and record the data request receiving address of the first receiving end in the active distribution device record table of the sending end. After finishing distributing audio and video data, the sender recalculates the currently occupied distribution capacity value.
  • the sending end is used as the primary data distribution device
  • the second receiving end is used as the secondary data distribution device
  • the audio and video data request-response process between the receiving end and the sending end is utilized Adaptively form a data distribution network to distribute audio and video data, and improve the audio and video data distribution capability of the entire audio and video transmission system.
  • the above-mentioned secondary data distribution device is the receiving end that has distributed the audio and video data, that is, the second receiving end.
  • the secondary data distribution device can also distribute data by forwarding data step by step, and divide the secondary data distribution device into the first secondary data distribution device, the second secondary data distribution device, ..., the nth secondary data distribution device ;
  • the first secondary data distribution device obtains audio and video data from the primary data distribution device
  • the mth secondary data distribution device obtains audio and video data from the m-1th secondary data distribution device respectively, and distributes the obtained audio and video data to The m+1th secondary data distribution device;
  • the composition of the mth secondary data distribution device does not need to be specified in advance, but is dynamically generated during the data request process.
  • the sending end obtains the first data request signal from the first receiving end; judges whether the currently occupied distribution capacity value reaches the maximum distribution capacity value, and measures the distribution capacity of the sending end by the distribution capacity value, which is beneficial to the transmission If so, return request failure response information based on the first data request signal and the data request receiving address of the second receiving end that has distributed audio and video data, so that the second receiving end distributes audio and video data to the first receiving end; If not, return request success response information based on the first data request signal, and distribute audio and video data to the first receiving end.
  • the present application distributes data through the second receiving end, which reduces the distribution capacity requirement of the sending end, and helps reduce the hardware cost and complexity of the audio and video transmission system.
  • FIG. 4 is a schematic flowchart of another embodiment of the data distribution method provided by the present application.
  • the data distribution method of the embodiment of the present application is applied to the audio and video transmission system shown in FIG. 2 , and the specific structure of the audio and video transmission system will not be repeated here.
  • Step S31 the first receiving end sends a first data request signal to the sending end to request distribution of audio and video data.
  • the data request program module in the embodiment of the present application has a preset initial data request receiving address
  • the data distribution device corresponding to the initial data request address is the initial data distribution device.
  • the data request receiving address of the transmitting end TX1 in the embodiment of the present application is the preset initial request receiving address of all data request program modules in the audio and video transmission system.
  • Step S32 The sending end receives the first data request signal from the first receiving end, and judges whether the currently occupied distribution capacity value reaches the maximum distribution capacity value.
  • Step S33 The sending end returns request success response information to the first receiving end based on the first data request signal, and distributes audio and video data to the first receiving end.
  • Step S34 Based on the first data request signal, the sending end returns request failure response information and the data request receiving address of the second receiving end that has already distributed audio and video data to the first receiving end.
  • Step S35 The first receiving end sends a second data request signal based on the data request receiving address of the second receiving end.
  • Step S36 The second receiving end distributes the audio and video data to the first receiving end based on the second data request signal.
  • the data distribution method of the embodiment of the present application is suitable for distributing audio and video data in TCP or UDP unicast mode, and has good adaptability to the network, and effectively avoids the adverse effect on the network that may be caused by the multicast distribution mode; the sending end does not need Directly distribute the generated audio and video data to all receivers, reducing the distribution capacity requirements of the sender, and there is no limit to the number of receivers; no special distribution server equipment is required, which can effectively reduce the hardware cost and complexity of the transmitter system.
  • FIG. 5 is a schematic structural diagram of an embodiment of a terminal device provided in this application.
  • the terminal device in this embodiment of the present application is a data distribution device including a sending end and/or a receiving end in the above data distribution method embodiment and having a data distribution program module.
  • the terminal device 50 includes a signal acquisition module 51 , a capability judgment module 52 and a data distribution module 53 .
  • the signal obtaining module 51 is configured to obtain the first data request signal from the first receiving end.
  • the capacity judging module 52 is configured to judge whether the currently occupied distribution capacity value reaches the maximum distribution capacity value.
  • the data distribution module 53 is configured to return the request failure response information and the data request receiving address of the second receiving end of the distributed audio and video data based on the first data request signal when the currently occupied distribution capacity value reaches the maximum distribution capacity value, To enable the second receiving end to distribute the audio and video data to the first receiving end; it is also used to return a request based on the first data request signal when the currently occupied distribution capacity value does not reach the maximum distribution capacity value Responding successfully to the message, and distributing the audio and video data to the first receiving end.
  • FIG. 6 is a schematic structural diagram of another embodiment of a terminal device provided in this application.
  • the terminal device includes a memory 62 and a processor 61 connected to each other.
  • the memory 62 is used to store program instructions for implementing any one of the above data distribution methods.
  • the processor 61 is used to execute program instructions stored in the memory 62 .
  • the processor 61 may also be called a CPU (Central Processing Unit, central processing unit).
  • the processor 61 may be an integrated circuit chip with signal processing capabilities.
  • the processor 61 can also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the memory 62 can be a memory stick, a TF card, etc., and can store all the information in the string matching prediction device, including input raw data, computer programs, intermediate running results and final running results are all stored in the memory. It deposits and retrieves information according to the location specified by the controller. With the memory, the string matching prediction device has the memory function to ensure normal operation.
  • the memory of the string matching prediction device can be divided into main memory (internal memory) and auxiliary memory (external memory) according to the purpose of memory, and there is also a method of classification into external memory and internal memory. External storage is usually magnetic media or optical discs, which can store information for a long time.
  • Memory refers to the storage unit on the motherboard, which is used to store data and programs currently being executed, but it is only used to store programs and data temporarily, and the data will be lost when the power is turned off or cut off.
  • the disclosed methods and devices may be implemented in other ways.
  • the device implementations described above are only illustrative.
  • the division of modules or units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • a unit described as a separate component may or may not be physically separated, and a component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
  • the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a system server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods in various embodiments of the present application.
  • FIG. 7 is a schematic structural diagram of a computer-readable storage medium of the present application.
  • the storage medium of the present application stores a program file 71 capable of implementing all the above-mentioned data distribution methods, wherein the program file 71 can be stored in the above-mentioned storage medium in the form of a software product, and includes several instructions to make a computer device (which can It is a personal computer, a server, or a network device, etc.) or a processor (processor) that executes all or part of the steps of the methods in various embodiments of the present application.
  • a computer device which can It is a personal computer, a server, or a network device, etc.
  • processor processor
  • the aforementioned storage device includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc and other media that can store program codes. , or terminal devices such as computers, servers, mobile phones, and tablets.

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Abstract

一种数据分发方法、终端设备以及计算机可读存储介质，该数据分发方法应用于一种音视频传输系统的发送端，发送端与若干第一接收端、若干第二接收端通信连接；该数据分发方法包括：获取来自第一接收端的第一数据请求信号（S11）；判断当前已占用分发能力值是否达到最大分发能力值（S12）；若是，则基于第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使第二接收端向第一接收端分发音视频数据（S13）；若否，则基于第一数据请求信号返回请求成功应答信息，并向第一接收端分发音视频数据（S14）。该方法通过第二接收端进行数据分发，降低发送端分发能力需求，有利于降低音视频传输系统的硬件成本以及复杂程度。

Description

数据分发方法、终端设备以及计算机可读存储介质 【技术领域】
本申请涉及网络音视频传输技术领域，特别是涉及一种数据分发方法、终端设备以及计算机可读存储介质。
【背景技术】
基于网络的音视频传输系统由发送端及接收端构成，发送端将待传输的音视频信号进行采样编码为压缩音视频数据后，传输到接收端，由接收端解码并输出。目前较多的应用需要将一个发送端所生成的音视频数据分发到多个接收端，以实现一对多应用。
然后，目前通过发送端单播分发方式需要发送端分别与每个接收端建立TCP(传输控制协议，Transmission Control Protocol)或UDP(用户数据报协议，User Datagram Protocol)单播连接，将音视频数据复制多份并通过这些连接分别发送到接收端。这种音视频数据分发方式对发送端的处理器、存储器容量、网口的网络带宽有比较高的要求，视频分发的数量受到限制，进而最大允许的接收端数量受到限制，使得发送端分发能力需求过大。
【发明内容】
本申请提供一种数据分发方法、终端设备以及计算机可读存储介质。
为解决上述技术问题，本申请提供的第一个技术方案为：提供一种数据分发方法，所述数据分发方法应用于一种音视频传输系统的发送端，所述发送端与若干第一接收端、若干第二接收端通信连接；所述数据分发方法包括：
获取来自所述第一接收端的第一数据请求信号；
判断当前已占用分发能力值是否达到最大分发能力值；
若是，则基于所述第一数据请求信号返回请求失败应答信息以及已 分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；
若否，则基于所述第一数据请求信号返回请求成功应答信息，并向所述第一接收端分发所述音视频数据。
为解决上述技术问题，本申请提供的第二个技术方案为：提供另一种数据分发方法，所述数据分发方法应用于一种音视频传输系统，其中，所述音视频传输系统包括发送端、与所述发送端通信连接的若干第一接收端和若干第二接收端；所述数据分发方法包括：
所述第一接收端向所述发送端发送第一数据请求信号，以请求分发音视频数据；
所述发送端接收所述第一接收端的第一数据请求信号，并判断当前已占用分发能力值是否达到最大分发能力值；
若否，所述发送端基于所述第一数据请求信号向所述第一接收端返回请求成功应答信息，并向所述第一接收端分发所述音视频数据；
若是，所述发送端基于所述第一数据请求信号向所述第一接收端返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址；
所述第一接收端基于所述第二接收端的数据请求接收地址发送第二数据请求信号；
所述第二接收端基于所述第二数据请求信号向所述第一接收端分发所述音视频数据。
为解决上述技术问题，本申请提供的第三个技术方案为：提供一种终端设备，所述终端设备包括处理器、与所述处理器连接的存储器，其中，所述存储器存储有程序指令；所述处理器用于执行所述存储器存储的程序指令以实现：获取来自所述第一接收端的第一数据请求信号；
判断当前已占用分发能力值是否达到最大分发能力值；
若是，则基于所述第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；
若否，则基于所述第一数据请求信号返回请求成功应答信息，并向所述第一接收端分发所述音视频数据。
为解决上述技术问题，本申请提供的第四个技术方案为：提供一种计算机可读存储介质，所述存储介质存储有程序指令，所述程序指令被执行时实现：获取来自所述第一接收端的第一数据请求信号；
判断当前已占用分发能力值是否达到最大分发能力值；
若是，则基于所述第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；
若否，则基于所述第一数据请求信号返回请求成功应答信息，并向所述第一接收端分发所述音视频数据。
本申请提供的数据分发方法，通过获取来自第一接收端的第一数据请求信号；判断当前已占用分发能力值是否达到最大分发能力值，通过分发能力值衡量发送端的分发能力，有利于对发送端进行管控，防止发送失败或发送错误的问题产生；若是，则基于第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使第二接收端向第一接收端分发音视频数据；若否，则基于第一数据请求信号返回请求成功应答信息，并向第一接收端分发音视频数据。本申请通过第二接收端进行数据分发，降低发送端分发能力需求，有利于降低音视频传输系统的硬件成本以及复杂程度。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。其中：
图1是本申请提供的数据分发方法一实施例的流程示意图；
图2是本申请提供的音视频传输系统一实施例的结构示意图；
图3是本申请提供的数据分发方法另一实施例的流程示意图；
图4是本申请提供的数据分发方法又一实施例的流程示意图；
图5是本申请提供的终端设备一实施例的结构示意图；
图6是本申请提供的终端设备另一实施例的结构示意图；
图7是本申请提供的计算机可读存储介质的结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
下面结合附图和实施例对本申请进行详细的说明。
请参见图1和图2，图1是本申请提供的数据分发方法一实施例的流程示意图，图2是本申请提供的音视频传输系统一实施例的结构示意图。
本申请实施例提供的音视频传输系统为一种一对多传输系统，音视频传输系统具体由一个发送端TX1、N个接收端RX1，RX2，…，RXN构成。其中，发送端TX1，N个接收端RX1，RX2，…，RXN分别连接到同一网络交换机上，通过网络交换机的TCP端口进行数据通信以及数据传输。
发送端TX1的网络IP地址为IP0，N个接收端RX1，RX2，…，RXN的网络IP地址分别为IP1，IP2，…，IPN，发送端和接收端之间可以通过IP地址相互访问。发送端和接收端均搭载有程序控制器，通过运行程序模块以实现本申请实施例数据分发方法的过程。
需要说明的是，在以下实施例描述中以发送端为数据分发方法的执行主体，第一接收端表示待分发音视频数据的接收端，第二接收端表示已分发音视频数据的接收端。
如图1所示，本申请实施例的数据分发方法的具体步骤如下：
步骤S11：获取来自第一接收端的第一数据请求信号。
其中，发送端通过音视频源获取待传输的音视频信号，对待传输的音视频信号进行采样编码，压缩为音视频数据后进行数据分发。发送端具有数据分发程序模块，发送端将音视频信号压缩编码为音视频数据后，通过数据分发程序模块分发数据。
本申请实施例的接收端具有数据请求程序模块和数据分发程序模块，接收端通过数据请求程序模块向发送端发送第一数据请求信号，以请求发送端向该接收端分发音视频数据。进一步地，接收端在获取到音视频数据后，一方面可以通过将获取到的音视频数据解码并输出，另一方面可以通过数据分发程序模块将获取到的音视频数据分发给其他接收端。由于发送端和接收端均具有数据分发程序模块，发送端或者任意一个接收端均可以成为数据分发设备。
具体地，发送端通过数据分发程序模块侦听程序预置TCP端口，等待并接收来自第一接收端的第一数据请求信号。其中，第一数据请求信号是由一个待获取数据的接收端发送的消息，该数据请求信号包含第一接收端的数据请求接收地址，第一接收端的数据请求接收地址包括第一接收端的网络IP地址及数据请求侦听TCP端口。
例如，将网络IP地址为ip，侦听TCP端口为p的数据分发设备的数据请求接收地址记作(ip，p)。本申请实施例中发送端TX1、N个接收端RX1，RX2，…，RXN的数据请求接收端口分别为p0，p1，p2，…pN，则对应的数据请求接收地址分别为(ip0，p0)，(ip1，p1)，(ip2，p2)，…，(ipN，pN)。
步骤S12：判断当前已占用分发能力值是否达到最大分发能力值。
其中，数据分发程序模块中设置有当前已占用分发能力的过程参数，当前已占用分发能力是一个数据分发设备的数据分发程序模块向数据请求端分发数据而导致的分发能力下降数值。数据分发设备的最大分发能力值为该分发设备能够同时保持的用于音视频数据传输的最大连接数，当前已占用分发能力值为该分发设备当前保持的用于音视频数据传输的连接数。本申请实施例可以将数据分发设备的数据分发程序模块能保持的用于音视频数据传送的TCP最大连接数作为其最大分发能力 值，记作E；将已经与数据请求设备建立的TCP连接数作为当前已占用分发能力值，记作K。
因此，数据分发设备的已占用分发能力值的取值范围在0到最大分发能力值之间，而当前已占用分发能力值即可用于衡量数据分发设备的实时分发能力。
具体地，数据分发设备的分发能力可以通过试验或计算来确定并允许每个数据分发设备具有不同的分发能力，如本申请实施例中将数据分发设备与接收端建立分发数据的TCP链接数量通过程序预置的方式预先存储在各个数据分发设备中。
已占用分发能力与已建立数据分发链接数量可以存在变换关系，并在数据分发设备处理数据请求的过程中通过计算方式得到。如本申请实施例将已建立的用于数据分发TCP连接数量作为已占用分发能力，每增加一个数据分发连接，用于数据分发TCP连接数就加1，已占用分发能力值随之加1。
发送端获取第一接收端的第一数据请求信号时，检测自身的当前已占用分发能力值是否达到最大分发能力值。若发送端的当前已占用分发能力值未达到最大分发能力值，则进入步骤S14；若发送端的当前已占用分发能力值达到最大分发能力值，则进入步骤S13。
步骤S13：基于第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使第二接收端向第一接收端分发音视频数据。
其中，本申请实施例的请求结果包括数据请求成功、数据请求失败两种。发送端的当前已占用分发能力值达到最大分发能力值时，发送端需要给第一接收端返回数据请求失败的请求结果。
具体地，数据请求失败的请求结果中包括请求失败应答信息以及其中一个第二接收端的数据请求接收地址，以使第一接收端可以向该第二接收端请求分发音视频数据，此时，该第二接收端作为数据分发设备进行音视频数据的分发。
其中，数据分发程序模块还包括活动分发设备记录表的过程参数， 发送端可以借助活动分发设备记录表选取合适的第二接收端作为第一接收端的数据分发设备。具体地，活动分发设备记录表的首个表项为该数据分发程序模块所在设备的数据请求接收地址，例如发送端的活动分发设备记录表的首个表项即为发送端的数据请求接收地址，其余表项为已经从该数据分发程序模块分发到音视频数据的所有第二接收端的数据请求接收地址。具体地，将活动分发设备记录表记作A，表中第m个表项用A(m)表示，A(0)即为该数据分发程序模块所在设备的数据请求接收地址。
以发送端为例，建立活动分发设备记录表的过程以及利用活动分发设备记录表分发音视频数据的过程请继续参阅图3，图3是本申请提供的数据分发方法另一实施例的流程示意图。
如图3所示，本申请实施例的数据分发方法的具体步骤如下：
步骤S21：建立活动分发设备记录表，其中，活动分发设备记录表至少包括接收端的数据请求接收地址。
其中，发送端建立活动分发设备记录表，首个表项即为发送端的数据请求接收地址。
步骤S22：获取来自第二接收端的第二数据请求信息。
步骤S23：基于第二接收端的第二数据请求信息向第二接收端分发音视频数据，以及将第二接收端的数据请求接收地址记录在活动分发设备记录表。
其中，发送端在已占用分发能力值未达到最大分发能力值时，直接向第二接收端分发音视频数据，并将第二接收端的数据请求接收地址记录在活动分发设备记录表中。
步骤S24：当当前已占用分发能力值达到最大分发能力值时，在活动分发设备记录表中选取任一第二接收端的数据请求接收地址。
其中，获取来自第一接收端的第一数据请求信息，且当前已占用分发能力值达到最大分发能力值时，发送端在活动分发设备记录表中选取任意一个第二接收端及其数据请求接收地址A(i)，i＞0。
步骤S25：向第一接收端返回请求失败应答信息以及第二接收端的 数据请求接收地址，以使第一接收端基于第二接收端的数据请求接收地址向第二接收端发送第三数据请求信号，第二接收端基于第三数据请求信号向第一接收端分发音视频数据。
其中，发送端向第一接收端返回数据请求失败的请求结果，并断开与第一接收端本次数据请求TCP连接，请求结果包括A(i)，记作Ack(Fail，A(i))。第一接收端获取Ack(Fail，A(i))中的A(i)，并基于此向第二接收端发送第三数据请求信号。第二接收端作为数据分发设备判断自身的已占用分发能力值未达到最大分发能力值时，即可向第一接收端分发音视频数据。
步骤S14：基于第一数据请求信号返回请求成功应答信息，并向第一接收端分发音视频数据。
其中，发送端的当前已占用分发能力值未达到最大分发能力值时，发送端的数据分发程序模块保持与第一接收端的本次数据请求TCP连接，并将向第一接收端返回数据请求成功的请求结果Ack(Success，A(0))，在成功应答后即可直接分发音视频数据。
在分发音视频数据过程中，发送端需要增加当前已占用分发能力值，并将第一接收端的数据请求接收地址记录在发送端的活动分发设备记录表中。完成分发音视频数据后，发送端再重新计算当前已占用分发能力值。
本申请实施例通过在接收端增加数据分发功能，将发送端作为初级数据分发设备，将第二接收端作为次级数据分发设备，利用接收端与发送端之间的音视频数据请求-应答过程来自适应地形成一个数据分发网络来分发音视频数据，提高整个音视频传输系统的音视频数据分发能力。
进一步地，上述次级数据分发设备是已经分发到音视频数据的接收端，即第二接收端。次级数据分发设备还可以通过逐级转发数据的方式分发数据，将次级数据分发设备分为第一次级数据分发设备、第二次级数据分发设备、…、第n次级数据分发设备；第一次级数据分发设备从初级数据分发设备获取音视频数据，第m次级数据分发设备分别从第 m-1次级数据分发设备获取音视频数据，并将所获取音视频数据分发给第m+1次级数据分发设备；第m次级数据分发设备的构成并不需要预先指定，而是在数据请求过程中动态生成的。
在本申请实施例中，发送端通过获取来自第一接收端的第一数据请求信号；判断当前已占用分发能力值是否达到最大分发能力值，通过分发能力值衡量发送端的分发能力，有利于对发送端进行管控；若是，则基于第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使第二接收端向第一接收端分发音视频数据；若否，则基于第一数据请求信号返回请求成功应答信息，并向第一接收端分发音视频数据。本申请通过第二接收端进行数据分发，降低发送端分发能力需求，有利于降低音视频传输系统的硬件成本以及复杂程度。
请继续参阅图4，图4是本申请提供的数据分发方法又一实施例的流程示意图。本申请实施例的数据分发方法应用于如图2所示的音视频传输系统，音视频传输系统的具体结构在此不再赘述。
如图4所示，本申请实施例的数据分发方法的具体步骤如下：
步骤S31：第一接收端向发送端发送第一数据请求信号，以请求分发音视频数据。
其中，本申请实施例的数据请求程序模块具有一个预设的初始数据请求接收地址，这个初始数据请求地址对应的数据分发设备即为初始数据分发设备。例如，本申请实施例的发送端TX1的数据请求接收地址即为音视频传输系统中所有数据请求程序模块的预设初始请求接收地址。
步骤S32：发送端接收第一接收端的第一数据请求信号，并判断当前已占用分发能力值是否达到最大分发能力值。
步骤S33：发送端基于第一数据请求信号向第一接收端返回请求成功应答信息，并向第一接收端分发音视频数据。
步骤S34：发送端基于第一数据请求信号向第一接收端返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址。
步骤S35：第一接收端基于第二接收端的数据请求接收地址发送第 二数据请求信号。
步骤S36：第二接收端基于第二数据请求信号向第一接收端分发音视频数据。
其中，上述步骤的过程在上述实施例中已经详细描述，在此不再赘述。
本申请实施例的数据分发方法适用于TCP或UDP单播方式分发音视频数据，对网络适应性好，同时还有效地避免组播分发方式可能导致的对网络的不良影响；发送端并不需要直接向所有接收端分发其所生成的音视频数据，降低了发送端分发能力需求，对接收端数量无限制；不需要专门的分发服务器设备，可以有效降低传输器系统硬件成本及复杂程度。
以上实施例，仅是对本申请的其中一种常见案例而已，并非对本申请的技术范围做任何限制，故凡是依据本申请方案的实质对以上内容所做的任何细微修改、等同变化或者修饰，均仍属于本申请技术方案的范围内。
请继续参见图5，图5是本申请提供的终端设备一实施例的结构示意图。本申请实施例的终端设备为包括上述数据分发方法实施例中发送端和/或接收端等具有数据分发程序模块的数据分发设备。
其中，终端设备50包括信号获取模块51、能力判断模块52以及数据分发模块53。
其中，信号获取模块51，用于获获取来自所述第一接收端的第一数据请求信号。
能力判断模块52，用于判断当前已占用分发能力值是否达到最大分发能力值。
数据分发模块53，用于在当前已占用分发能力值达到最大分发能力值时，基于所述第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；还用于在当前已占用分发能力值未达到最大分发能力值时，基于所述第一数据请求信号返回请求成功应答 信息，并向所述第一接收端分发所述音视频数据。
请参见图6，图6是本申请提供的终端设备另一实施例的结构示意图。终端设备包括相互连接的存储器62和处理器61。
存储器62用于存储实现上述任意一项的数据分发方法的程序指令。
处理器61用于执行存储器62存储的程序指令。
其中，处理器61还可以称为CPU(Central Processing Unit，中央处理单元)。处理器61可能是一种集成电路芯片，具有信号的处理能力。处理器61还可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器62可以为内存条、TF卡等，可以存储串匹配预测装置中全部信息，包括输入的原始数据、计算机程序、中间运行结果和最终运行结果都保存在存储器中。它根据控制器指定的位置存入和取出信息。有了存储器，串匹配预测装置才有记忆功能，才能保证正常工作。串匹配预测装置的存储器按用途存储器可分为主存储器(内存)和辅助存储器(外存)，也有分为外部存储器和内部存储器的分类方法。外存通常是磁性介质或光盘等，能长期保存信息。内存指主板上的存储部件，用来存放当前正在执行的数据和程序，但仅用于暂时存放程序和数据，关闭电源或断电，数据会丢失。
在本申请所提供的几个实施例中，应该理解到，所揭露的方法和装置，可以通过其它的方式实现。例如，以上所描述的装置实施方式仅仅是示意性的，例如，模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作 为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施方式方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，系统服务器，或者网络设备等)或处理器(processor)执行本申请各个实施方式方法的全部或部分步骤。
请参阅图7，为本申请计算机可读存储介质的结构示意图。本申请的存储介质存储有能够实现上述所有数据分发方法的程序文件71，其中，该程序文件71可以以软件产品的形式存储在上述存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本申请各个实施方式方法的全部或部分步骤。而前述的存储装置包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质，或者是计算机、服务器、手机、平板等终端设备。
以上仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种数据分发方法，其特征在于，所述数据分发方法应用于一种音视频传输系统的发送端，所述发送端与若干第一接收端、若干第二接收端通信连接；所述数据分发方法包括：
    获取来自所述第一接收端的第一数据请求信号；
    判断当前已占用分发能力值是否达到最大分发能力值；
    若是，则基于所述第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；
    若否，则基于所述第一数据请求信号返回请求成功应答信息，并向所述第一接收端分发所述音视频数据。
  2. 根据权利要求1所述的数据分发方法，其特征在于，
    所述最大分发能力值为所述发送端能够同时保持的用于所述音视频数据传输的最大连接数，所述当前已占用分发能力值为所述发送端当前保持的用于所述音视频数据传输的连接数。
  3. 根据权利要求1所述的数据分发方法，其特征在于，
    所述基于所述第一数据请求信号返回请求成功应答信息，包括：
    基于所述第一数据请求信号返回所述请求成功应答信息，以及所述发送端的数据请求接收地址，以使所述第一接收端基于所述发送端的数据请求接收地址接收所述音视频数据。
  4. 根据权利要求3所述的数据分发方法，其特征在于，
    所述向所述第一接收端分发所述音视频数据之后，所述数据分发方法还包括：
    增加所述当前已占用分发能力值；
    将所述第一接收端的数据请求接收地址记录在活动分发设备记录表。
  5. 根据权利要求1所述的数据分发方法，其特征在于，
    所述数据分发方法，还包括：
    建立活动分发设备记录表，其中，所述活动分发设备记录表至少包括所述接收端的数据请求接收地址；
    获取来自所述第二接收端的第二数据请求信息；
    基于所述第二接收端的第二数据请求信息向所述第二接收端分发所述音视频数据，以及将所述第二接收端的数据请求接收地址记录在所述活动分发设备记录表；
    当所述当前已占用分发能力值达到所述最大分发能力值时，在所述活动分发设备记录表中选取任一第二接收端的数据请求接收地址；
    向所述第一接收端返回所述请求失败应答信息以及所述第二接收端的数据请求接收地址，以使所述第一接收端基于所述第二接收端的数据请求接收地址向所述第二接收端发送第三数据请求信号，所述第二接收端基于所述第三数据请求信号向所述第一接收端分发所述音视频数据。
  6. 一种数据分发方法，其特征在于，所述数据分发方法应用于一种音视频传输系统，其中，所述音视频传输系统包括发送端、与所述发送端通信连接的若干第一接收端和若干第二接收端；所述数据分发方法包括：
    所述第一接收端向所述发送端发送第一数据请求信号，以请求分发音视频数据；
    所述发送端接收所述第一接收端的第一数据请求信号，并判断当前已占用分发能力值是否达到最大分发能力值；
    若否，所述发送端基于所述第一数据请求信号向所述第一接收端返回请求成功应答信息，并向所述第一接收端分发所述音视频数据；
    若是，所述发送端基于所述第一数据请求信号向所述第一接收端返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址；
    所述第一接收端基于所述第二接收端的数据请求接收地址发送第二数据请求信号；
    所述第二接收端基于所述第二数据请求信号向所述第一接收端分发所述音视频数据。
  7. 根据权利要求6所述的数据分发方法，其特征在于，
    所述数据分发方法，还包括：
    所述发送端基于所述第一数据请求信号向所述第一接收端返回请求成功应答信息以及所述发送端的数据请求接收地址，并向所述第一接收端分发所述音视频数据；
    所述第一接收端判断接收到的音视频数据是否来自所述发送端的数据请求接收地址；
    若是，所述第一接收端开始接收所述发送端分发的音视频数据；
    若否，所述第一接收端停止接收所述音视频数据。
  8. 根据权利要求6所述的数据分发方法，其特征在于，
    所述音视频传输系统还包括网络交换机，所述发送端、所述若干第一接收端以及所述若干第二接收端分别连接到所述网络交换机上。
  9. 一种终端设备，其特征在于，所述终端设备包括处理器、与所述处理器连接的存储器，其中，
    所述存储器存储有程序指令；
    所述处理器用于执行所述存储器存储的程序指令以实现：
    获取来自所述第一接收端的第一数据请求信号；
    判断当前已占用分发能力值是否达到最大分发能力值；
    若是，则基于所述第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；
    若否，则基于所述第一数据请求信号返回请求成功应答信息，并向所述第一接收端分发所述音视频数据。
  10. 一种计算机可读存储介质，其特征在于，所述存储介质存储有程序指令，所述程序指令被执行时实现：
    获取来自所述第一接收端的第一数据请求信号；
    判断当前已占用分发能力值是否达到最大分发能力值；
    若是，则基于所述第一数据请求信号返回请求失败应答信息以及已分发音视频数据的第二接收端的数据请求接收地址，以使所述第二接收端向所述第一接收端分发所述音视频数据；
    若否，则基于所述第一数据请求信号返回请求成功应答信息，并向所述第一接收端分发所述音视频数据。
PCT/CN2021/094657 2021-05-19 2021-05-19 数据分发方法、终端设备以及计算机可读存储介质 WO2022241675A1 (zh)

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