CN112491937A - Data transmission method, device, equipment and storage medium - Google Patents
Data transmission method, device, equipment and storage medium Download PDFInfo
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- CN112491937A CN112491937A CN201910858888.5A CN201910858888A CN112491937A CN 112491937 A CN112491937 A CN 112491937A CN 201910858888 A CN201910858888 A CN 201910858888A CN 112491937 A CN112491937 A CN 112491937A
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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
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/104—Peer-to-peer [P2P] networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
Abstract
The embodiment of the invention provides a data transmission method, a data transmission device, data transmission equipment and a storage medium. The method comprises the following steps: receiving request information, wherein the request information comprises first timestamp information; determining whether second timestamp information in the media data is consistent with the first timestamp information; and if the second timestamp information is consistent with the first timestamp information, sharing the media data corresponding to the second timestamp to the client. The embodiment of the invention can reduce the resource overhead and the calculation pressure.
Description
Technical Field
The invention relates to the technical field of P2P live broadcast services, in particular to a data transmission method, a data transmission device, data transmission equipment and a data transmission storage medium.
Background
With the rapid development of network technology, live broadcast is more and more widely applied to the internet. The traditional live broadcast mode has the problems of large bandwidth pressure and reduced video quality if the number of users is too large. Therefore, a Peer-to-Peer (Peer-to-Peer, P2P) technology is currently adopted to solve the problems of large bandwidth pressure and the like in the conventional live broadcast mode.
Live video broadcasting using P2P technology requires a slicing server to be built to slice live media data. However, it is time consuming to fragment the live media data, and it is necessary to modify the data transmission protocol after the live media data is fragmented to ensure the transmission of the media data. The live broadcast technology causes a large overhead of live broadcast time.
Disclosure of Invention
The embodiment of the invention provides a data transmission method, a data transmission device, data transmission equipment and a storage medium, and solves the problems of high resource overhead and high calculation pressure.
In a first aspect, an embodiment of the present invention provides a data transmission method, where the method includes:
receiving request information, wherein the request information comprises first timestamp information;
determining whether second timestamp information in the media data is consistent with the first timestamp information;
and if the second timestamp information is consistent with the first timestamp information, sharing the media data corresponding to the second timestamp to the client.
In one possible implementation, the method further comprises:
if the second timestamp information is inconsistent with the first timestamp information, generating a data query instruction;
and sending a data query instruction to the client so that the client responds to the data query instruction and requests the media data corresponding to the first timestamp information from the sharing end corresponding to the pre-generated sharing end information.
In one possible implementation, the second timestamp information is located in an extension field of the media data;
each key frame of the media data contains second time stamp information such that the group of pictures GOP contains the second time stamp information.
In a second aspect, an embodiment of the present invention provides a data transmission method, where the method includes:
generating request information, wherein the request information comprises first timestamp information;
sending the request information to a sharing end so that the sharing end determines whether second timestamp information in the media data is consistent with first timestamp information;
and receiving media data, wherein the media data comprises second time stamp information.
In one possible implementation, the method further comprises:
receiving a data query instruction;
and responding to the data query instruction, and requesting the media data corresponding to the first timestamp information from the sharing end corresponding to the pre-generated sharing end information.
In one possible implementation, after receiving the media data, the method further comprises:
in a case where it is determined that the second time stamp information coincides with the first time stamp information, the media data is played.
In one possible implementation, the media data includes first media data and second media data; the first media data and the second media data are obtained by sharing different sharing ends;
and requesting the second media data according to the timestamp corresponding to the last key frame of the first media data.
In a third aspect, an embodiment of the present invention provides a data transmission apparatus, where the apparatus includes:
the receiving module is used for receiving request information, and the request information comprises first timestamp information;
the comparison module is used for determining whether the second timestamp information in the media data is consistent with the first timestamp information;
and the sharing module is used for sharing the media data corresponding to the second timestamp to the client if the second timestamp information is consistent with the first timestamp information.
In a fourth aspect, an embodiment of the present invention provides a data transmission apparatus, where the apparatus includes:
the generating module is used for generating request information, and the request information comprises first timestamp information;
the sending module is used for sending the request information to the sharing end so that the sharing end can determine whether the second timestamp information in the media data is consistent with the first timestamp information;
and the receiving module is used for receiving the media data, and the media data comprises second timestamp information.
In a fifth aspect, an embodiment of the present invention provides a computing device, including: at least one processor, at least one memory, and computer program instructions stored in the memory, which when executed by the processor implement the method of the first aspect or any of the possible implementations of the first aspect as described in the embodiments above, or which when executed by the processor implement the method of the second aspect or any of the possible implementations of the second aspect.
In a sixth aspect, embodiments of the present invention provide a computer-readable storage medium, on which computer program instructions are stored, which, when executed by a processor, implement the method according to the first aspect or any one of the possible implementations of the first aspect in the above embodiments, or when executed by a processor, implement the method according to the second aspect or any one of the possible implementations of the second aspect.
According to the data transmission method, the device, the equipment and the medium provided by the embodiment of the invention, the request information is received, and the request information comprises the first timestamp information; determining whether second timestamp information in the media data is consistent with the first timestamp information; and if the second timestamp information is consistent with the first timestamp information, sharing the media data corresponding to the second timestamp to the client. The embodiment of the invention can reduce the resource overhead and the calculation pressure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 illustrates a flow chart of a method of data transmission provided in accordance with some embodiments of the invention;
FIG. 2 illustrates a flow diagram of another method of data transmission provided in accordance with some embodiments of the invention;
FIG. 3 illustrates a schematic diagram of a data transmission apparatus according to some embodiments of the present invention;
FIG. 4 illustrates a schematic structural diagram of another data transmission apparatus provided in accordance with some embodiments of the present invention;
FIG. 5 illustrates a block diagram of a data transmission system provided in accordance with some embodiments of the present invention;
FIG. 6 illustrates a schematic structural diagram of a computing device provided in accordance with some embodiments of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
With the rapid development of network technology, live broadcast is more and more widely applied to the internet. The traditional live broadcast mode has the problems of large bandwidth pressure and reduced video quality if the number of users is too large. Therefore, the P2P technology is currently adopted to solve the problems of large bandwidth pressure and the like in the traditional live broadcast mode.
The slicing server is required to be built for carrying out video live broadcast by using the P2P technology so as to slice the live broadcast media data and upload the sliced data to the slicing server. However, it is time consuming to fragment the live media data, and it is necessary to modify the data transmission protocol after the live media data is fragmented to ensure the transmission of the media data. The live broadcast technology causes a large overhead of live broadcast time.
Therefore, the data transmission method, the data transmission device, the data transmission equipment and the data transmission storage medium can solve the problems of high resource overhead and high calculation pressure.
For the convenience of understanding the embodiment, a detailed description will be first given of a data transmission method disclosed in the embodiment of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a data transmission method, including S101 to S106.
S101: the client device generates request information, wherein the request information comprises first timestamp information.
In an embodiment of the present invention, the client device generates request information, requests the sharing device for media data through the request information, and in order to accurately request to obtain the required media data, the client device generates the request information including first timestamp information, where the first timestamp information enables the sharing device to determine the media data required by the client device.
S102: the client device sends the request information to the sharing device, so that the sharing device determines whether the second timestamp information in the media data is consistent with the first timestamp information.
In an embodiment of the present invention, after the request information is generated, the request information is sent to the sharing end device, where the sharing end device may be any client device. The method includes that shared end equipment information is stored in client equipment, the shared end equipment information stores state information of each client equipment, the shared end equipment information can also be acquired from a server, the server determines the client equipment capable of being used as the shared end equipment according to the acquired state information of the client equipment, and shared end equipment information is generated, wherein the state information of the client equipment needs to be uploaded to the server regularly, and the state information includes an Internet Protocol (IP) address of the client, whether the client is in a state of sharing media data, the number of the client when the client is in a state of sharing media data, position information of the client, whether the client is in a data pull stage or a sharing stage, and the like. The sharing-side device information enables the client device needing the media data to determine which client device can be used as the sharing-side device according to the state information.
S103: the sharing end equipment receives request information, wherein the request information comprises first timestamp information.
In an embodiment of the present invention, after receiving the request information, the sharing-side device identifies first timestamp information in the request information, and further determines media data requested by the client device according to the first timestamp information.
S104: the sharing end device determines whether the second time stamp information in the media data is consistent with the first time stamp information.
In an embodiment of the present invention, after the sharing end device determines the first timestamp information, the sharing end device determines the second timestamp information in the extension field of the media data. Each key frame of the media data includes second timestamp information, for example, a video is encapsulated in an h264 format, and a custom timestamp field is added in an extension field of the video, as shown in fig. 2, the h264 sequence of the video is an h264 sequence of the video, the h264 sequence is composed of multiple groups of Pictures (GOPs), and supplemental enhancement information SEI is inserted before a key frame of each GOP Group to ensure that each Group of GOPs has timestamp information, that is, the timestamp information corresponds to the SEI. Wherein, the time corresponding to a group of GOPs may be 1 second.
S105: and if the second timestamp information is consistent with the first timestamp information, the sharing end equipment shares the media data corresponding to the second timestamp to the client end equipment.
In an embodiment of the present invention, after determining the second timestamp information, the sharing device compares the first timestamp information with the second timestamp information, and if the first timestamp information is consistent with the second timestamp information, the sharing device has media data required by the client device, and sends the media data corresponding to the second timestamp information to the client device.
S106: the client device receives the media data, and the media data contains the second time stamp information.
In an embodiment of the present invention, after the client device receives the media data, data alignment is further required, and therefore, the media data further includes second timestamp information.
The client device compares the second timestamp information with the first timestamp information in the media data, so that the media data can be aligned, and the media data is played under the condition that the second timestamp information is determined to be consistent with the first timestamp information.
In addition, if the first timestamp information is inconsistent with the second timestamp information, the sharing end device generates a data query instruction and sends the data query instruction to the client end device, and after receiving the data query instruction, the client end device determines that the sharing end device does not have the media data required by the sharing end device, and then requests the media data corresponding to the first timestamp information from the sharing end device corresponding to the sharing end device information.
Finally, in the data transmission method provided in the embodiment of the present invention, the media data includes first media data and second media data; the first media data and the second media data are obtained by sharing different sharing ends;
the method further comprises the following steps: and requesting the second media data according to the timestamp corresponding to the last key frame of the first media data.
In an embodiment of the present invention, when the sharing-side device shares the media data, a disconnection condition may occur, and the media data requested by the client device may be requested from multiple sharing-side devices. For example, the media data requested by the client device includes first media data and second media data, where the first media data is shared by the first sharing device to the client, and the second media data is shared by the second sharing device to the client. The timestamp corresponding to the last key frame of the first media data is T, and in order to ensure the fluency of live video playing, when the second media data is acquired from the second sharing end device, the timestamp corresponding to the first key frame of the second media data is T +1, that is, when the client needs to request the second media data from the second sharing end device, the timestamp contained in the request information is T + 1.
According to the embodiment of the invention, media data are requested by using the timestamp information, a fragment server does not need to be built, and a data transmission protocol does not need to be modified, so that the resource overhead and the calculation pressure are reduced.
As an example, referring to fig. 3, an embodiment of the present invention provides a data transmission system, including: server 301, information forwarding server 302, client device 303.
The server 301 is configured to receive state information of the client device 303 updated by the information forwarding server, generate shared-side device information based on the state information of the client device 303, and send the shared-side device information to the information forwarding server 302, where a client in the shared-side device information may serve as a shared-side device and share media data to other clients, the shared-side device information may be an optimal shared-side list, the client device 303 may be connected to a client in the optimal shared-side list based on the optimal shared-side list, and the client may be connected to other multiple clients simultaneously.
The information forwarding server 302 is configured to obtain status information of the client device 303 and upload the status information to the server 301; and receiving the shared-end device information sent by the server 301.
The client device 303 is configured to upload the state information of the client to the information forwarding server.
Referring to fig. 4, an embodiment of the present invention provides a data transmission apparatus, including:
a receiving module 401, configured to receive request information, where the request information includes first timestamp information;
a comparing module 402, configured to determine whether second timestamp information in the media data is consistent with the first timestamp information;
the sharing module 403 is configured to share the media data corresponding to the second timestamp to the client if the second timestamp information is consistent with the first timestamp information.
Optionally, the apparatus further includes an instruction processing module 404, configured to generate a data query instruction if the second timestamp information is inconsistent with the first timestamp information; and sending a data query instruction to the client so that the client responds to the data query instruction and requests the media data corresponding to the first timestamp information from the sharing end equipment corresponding to the pre-generated sharing end equipment information.
Optionally, the second timestamp information is located in an extension field of the media data;
each key frame of the media data contains second timestamp information.
Each module in the apparatus provided in the embodiment of the present invention can implement the method shown in fig. 1, and achieve the technical effect thereof, which is not described herein again for brevity.
Referring to fig. 5, an embodiment of the present invention provides a data transmission apparatus, including:
a generating module 501, configured to generate request information, where the request information includes first timestamp information;
a sending module 502, configured to send the request information to the sharing-end device, so that the sharing-end device determines whether second timestamp information in the media data is consistent with the first timestamp information;
the receiving module 503 is configured to receive media data, where the media data includes second timestamp information.
Optionally, the apparatus further includes an instruction processing module 504, configured to receive a data query instruction; and responding to the data query instruction, and requesting the media data corresponding to the first timestamp information from the sharing end equipment corresponding to the pre-generated sharing end equipment information.
Optionally, the apparatus further comprises a playing module 505 for playing the media data after receiving the media data, in case it is determined that the second timestamp information is consistent with the first timestamp information.
Optionally, the media data includes first media data and second media data; the first media data and the second media data are obtained by sharing different sharing ends;
the apparatus further includes a requesting module 506, configured to request the second media data according to a timestamp corresponding to a last key frame of the first media data.
Each module in the apparatus provided in the embodiment of the present invention can implement the method shown in fig. 1, and achieve the technical effect thereof, which is not described herein again for brevity.
Referring to fig. 6, a hardware structure diagram of a computing device is provided according to an embodiment of the present invention.
The computing device may include a processor 601 and memory 602 that stores computer program instructions.
Specifically, the processor 601 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing embodiments of the present invention.
The processor 601 realizes any one of the data transmission methods in the above embodiments by reading and executing the computer program instructions stored in the memory 602.
In one example, the computing device may also include a communication interface 603 and a bus 610. As shown in fig. 6, the processor 601, the memory 602, and the communication interface 603 are connected via a bus 610 to complete communication therebetween.
The communication interface 603 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
In addition, in combination with the data transmission method in the foregoing embodiments, the embodiments of the present invention may be implemented by providing a computer-readable storage medium. The computer readable storage medium having stored thereon computer program instructions; the computer program instructions, when executed by a processor, implement any of the data transmission methods in the above embodiments.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As will be apparent to those skilled in the art, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (11)
1. A method of data transmission, the method comprising:
receiving request information, wherein the request information comprises first timestamp information;
determining whether second timestamp information in the media data is consistent with the first timestamp information;
and if the second timestamp information is consistent with the first timestamp information, sharing the media data corresponding to the second timestamp to the client.
2. The method of claim 1, further comprising:
if the second timestamp information is inconsistent with the first timestamp information, generating a data query instruction;
and sending the data query instruction to the client so that the client requests the media data corresponding to the first timestamp information from the share corresponding to the pre-generated share information in response to the data query instruction.
3. The method of claim 1, wherein the second timestamp information is located in an extension field of the media data;
each key frame of the media data contains the second timestamp information.
4. A method of data transmission, the method comprising:
generating request information, wherein the request information comprises first timestamp information;
sending the request information to a sharing end so that the sharing end determines whether second timestamp information in media data is consistent with the first timestamp information;
and receiving media data, wherein the media data comprises the second timestamp information.
5. The method of claim 4, further comprising:
receiving a data query instruction;
and responding to the data query instruction, and requesting the media data corresponding to the first timestamp information from a sharing end corresponding to pre-generated sharing end information.
6. The method of claim 4, wherein after receiving the media data, the method further comprises:
playing the media data if it is determined that the second timestamp information is consistent with the first timestamp information.
7. The method of claim 4, wherein the media data comprises first media data and second media data; the first media data and the second media data are obtained by sharing different sharing ends;
the method further comprises the following steps: and requesting the second media data according to the timestamp corresponding to the last key frame of the first media data.
8. A data transmission apparatus, characterized in that the apparatus comprises:
the receiving module is used for receiving request information, and the request information comprises first timestamp information;
the comparison module is used for determining whether second timestamp information in the media data is consistent with the first timestamp information;
and the sharing module is used for sharing the media data corresponding to the second timestamp to the client if the second timestamp information is consistent with the first timestamp information.
9. A data transmission apparatus, characterized in that the apparatus comprises:
the generating module is used for generating request information, and the request information comprises first timestamp information;
a sending module, configured to send the request information to a sharing end, so that the sharing end determines whether second timestamp information in the media data is consistent with the first timestamp information;
and the receiving module is used for receiving media data, and the media data comprises the second timestamp information.
10. A computing device, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any of claims 1-3 or any of claims 4-7.
11. A computer readable storage medium having computer program instructions stored thereon which, when executed by a processor, implement the method of any of claims 1-3 or any of claims 4-7.
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