CN112672100B - Multi-display-card data cooperative processing method, video conference system and cloud server - Google Patents
Multi-display-card data cooperative processing method, video conference system and cloud server Download PDFInfo
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Abstract
The disclosure discloses a multi-display-card data cooperative processing method, a video conference system and a cloud server, and belongs to the technical field of video encoding and decoding. The method comprises the following steps: distributing a video card for data processing for each conference terminal accessed to the video conference, and completing video data decoding of each conference terminal in parallel; the decoded original decoding data are respectively stored on the display cards corresponding to all the conference terminals; the nth display card distributed for the Xth conference terminal acquires original decoding data on the other display cards, and the nth display card performs scaling processing on each path of original decoding data according to the size specified in the private layout requested by the Xth conference terminal to obtain intermediate data; wherein X and n are both non-zero natural numbers; and the nth display card splices the zoomed intermediate data of each path, then codes the intermediate data to obtain a fused code stream, and feeds the fused code stream back to the Xth conference terminal. By implementing the technical scheme disclosed by the invention, one-way decoding can be shared by multiple-way coding, and the number of coding and decoding ways is increased.
Description
Technical Field
The disclosure relates to video encoding and decoding technologies, and in particular, to a multi-display-card data cooperative processing method, a video conference system, and a cloud server.
Background
At present, the video conference utilizes the traditional CPU coding, not only the coding efficiency is low, but also the number of coding paths is limited, and CPU resources are consumed. In order to increase the number of encoding and decoding paths and efficiency, the video card encoding and decoding is introduced, and the number of encoding and decoding paths of a single video card is still small.
In a video conference scenario, a plurality of conference rooms generally need to be fused at the same time, and finally a fused picture is encoded, and a private layout for personalized configuration of individual conference rooms may be needed. Since the layout of each venue is not the same, the code cannot be shared.
Disclosure of Invention
In view of this, the present disclosure discloses a multi-display-card data cooperative processing method, a video conference system, and a cloud server, which share one decoding path with multiple encoding paths, and increase the number of encoding and decoding paths, so as to at least solve the above technical problems in the prior art.
According to a first aspect of the present disclosure, a method for cooperative processing of data of multiple display cards is disclosed, the method comprising the steps of:
distributing a video card for data processing for each conference terminal accessed to the video conference, and completing video data decoding of each conference terminal in parallel; the decoded original decoding data are respectively stored on the display card corresponding to each conference terminal;
acquiring the original decoding data on the rest of the video cards by the nth video card distributed for the Xth conference terminal, and zooming each path of the original decoding data by the nth video card according to the size appointed in the private layout requested by the Xth conference terminal to obtain intermediate data; wherein X and n are both non-zero natural numbers;
and the nth display card splices each path of the intermediate data after being zoomed, then codes the intermediate data to obtain a fused code stream, and feeds the fused code stream back to the Xth conference terminal.
As an implementation manner of the present disclosure, the conference terminal accesses the video conference through the video conference system center control device and the multipoint control unit MCU.
As an embodiment of the present disclosure, a video card for performing data processing is allocated to each conference terminal accessing the video conference through a load balancer.
As an implementation manner of the present disclosure, the merged code stream is output to a central processing unit CPU, and is transmitted to the xth conference terminal through the MCU.
As an embodiment of the present disclosure, the acquiring, by the nth graphics card, the original decoding data on the remaining graphics cards further includes:
and the nth display card adopts Peripheral Component Interconnect Express (PCIE) communication, and copies the original decoding data on the rest display cards.
As an embodiment of the present disclosure, n display cards are configured on the same server, and the number of encoding and decoding paths of each display card is M;
when the n × M conference terminals access the same video conference, accessing each graphics card to the M conference terminals, each graphics card performing M decoding, completing decoding by the n × M conference terminals in parallel, and having n × M original decoding data in total;
and each path of code utilizes n × M paths of original decoding data, and each graphics card utilizes n × M paths of original decoding data to complete M paths of fusion codes.
According to a second aspect of the present disclosure, there is also disclosed a multi-display card video conferencing system, the system comprising:
the multipoint control unit MCU is central control equipment of the video conference system, and X conference terminals are accessed to the video conference through the MCU;
the load balancer is used for allocating the video cards for encoding and decoding for the conference terminals accessed to the same video conference according to the quantity configuration of the video cards in the video card group;
the video card group comprises n video cards and is used for completing the decoding of the video data of each conference terminal in parallel to generate original decoding data; the video conference system comprises n video cards, a conference terminal and a video server, wherein the n video cards are used for carrying out video conference on the conference terminal and the video server respectively, and the video server is used for carrying out zooming and splicing by utilizing the original decoding data on the n video cards according to private layouts requested by X conference terminals accessed to the same video conference and coding to obtain a fused code stream of each conference terminal; wherein X and n are both non-zero natural numbers.
As an embodiment of the present disclosure, the n graphics cards are configured on the same server.
As an embodiment of the present disclosure, the original decoded data is stored on the graphics cards corresponding to the conference terminals, respectively.
As an embodiment of the present disclosure, the n display cards adopt Peripheral Component Interconnect Express (PCIE) communication, and copy and share the original decoding data with each other.
As an embodiment of the present disclosure, the graphics card group includes n graphics cards, and the n graphics cards are configured in the same server, and the number of encoding and decoding paths of each graphics card is M; and each display card is accessed into n × M conference terminals, and performs M decoding paths on each display card, wherein the n display cards share n × M original decoding data to respectively obtain M fused code streams.
According to a third aspect of the present disclosure, there is also disclosed a video conference cloud server, comprising: a Central Processing Unit (CPU), a memory and the multi-display card video conference system disclosed in any one of the above embodiments; and the CPU is used for transmitting the fusion code stream processed by the display card group to the Xth conference terminal through the MCU.
Compared with the prior art, the technical scheme disclosed by the disclosure has the following beneficial technical effects:
by implementing the technical scheme disclosed by the invention, multiple display cards are utilized, the cooperative work of the multiple display cards is coordinated through the load balancing and cross-display card technology, the application of full coding and full decoding is realized, one-path decoding is shared by multiple-path coding, and the number of the coding and decoding paths is increased. Moreover, by utilizing PCIE communication between the display cards, the use of a CPU is effectively reduced, and meanwhile, the bandwidth from the CPU to the display cards is reduced.
In addition, the whole processes of decoding, zooming, splicing and encoding are carried out in each display card, the ultra-strong computing capability of the GPU and the data interaction between the display cards are utilized, the bandwidth loss from the display cards to the CPU is further reduced, and the utilization rate of the CPU is reduced.
It is to be understood that the teachings of the present disclosure need not achieve all of the above-described benefits, but rather that specific embodiments may achieve specific technical results, and that other embodiments of the present disclosure may achieve benefits not mentioned above.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
Fig. 1 is a schematic flow chart of a method for cooperative processing of data of multiple display cards according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating a process of cooperatively processing data by multiple display cards according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a multi-display-card video conference system according to an embodiment of the disclosure; and
fig. 4 is a schematic composition diagram of a video conference cloud server disclosed in the embodiment of the present disclosure.
Detailed Description
The principles and spirit of the present disclosure will be described with reference to a number of exemplary embodiments. It is understood that these embodiments are given solely for the purpose of enabling those skilled in the art to better understand and to practice the present disclosure, and are not intended to limit the scope of the present disclosure in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The technical scheme of the disclosure is further elaborated by combining the drawings and specific embodiments.
The method comprises the following steps:
in order to realize that each path of decoding in a video conference system can be shared by any path of encoding, the disclosure provides a multi-display-card data cooperative processing method, which comprises the following steps:
s100: distributing a video card for data processing for each conference terminal accessed to the video conference;
s101: decoding the video data of each conference terminal in parallel, and storing the decoded original decoded data on the display card corresponding to each conference terminal respectively;
s102: the nth display card distributed for the Xth conference terminal acquires original decoding data on the other display cards, and the nth display card performs scaling processing on each path of original decoding data according to the size specified in the private layout requested by the Xth conference terminal to obtain intermediate data;
s103: and the nth display card splices the zoomed intermediate data of each path, then codes the intermediate data to obtain a fused code stream, and feeds the fused code stream back to the Xth conference terminal.
In the embodiment, multiple display cards are utilized, and the multiple display cards are coordinated to cooperatively work through load balancing and a cross-display card technology, so that the application of full coding and full decoding is realized, one-path decoding is shared by multiple-path coding, and the number of the coding and decoding paths is increased. Moreover, by utilizing PCIE communication between the display cards, the use of a CPU is effectively reduced, and meanwhile, the bandwidth from the CPU to the display cards is reduced.
The whole processes of decoding, zooming, splicing and encoding are carried out in each display card, the ultra-strong computing capability of the GPU and the data interaction between the display cards are utilized, the bandwidth loss from the display cards to the CPU is further reduced, and the utilization rate of the CPU is reduced.
In the above embodiments, X and n are both non-zero natural numbers. Here, for example, 3 display cards are inserted into a server of the same video conference system, as shown in fig. 1, in a first display card, a second display card, and a third display card, the number of encoding and decoding paths of each display card is 20, then the total number of encoding and decoding paths of the server is 60 at most, if 60 conference terminals join the same video conference and each conference terminal requests different private layouts, then 60-path decoding and 60-path fused encoding are required at this time, and each encoding path needs to use the 60-path decoding data, each display card copies the 60-path decoding data through PCIE, completes respective decoding of 20-path data, obtains a fused code stream, and correspondingly feeds back the fused code stream to the 20 conference terminals connected thereto.
In an optional embodiment, the conference terminal accesses the video conference through the video conference system center control device MCU.
In an optional embodiment, a video card for data processing is allocated to each conference terminal accessing the video conference through a load balancer.
In an optional embodiment, the merged code stream is output to a Central Processing Unit (CPU) and is transmitted to the Xth conference terminal through the MCU.
As an optional implementation manner, in the foregoing embodiment, the acquiring, by the nth display card, the original decoded data on the remaining display cards further includes: the nth display card adopts Peripheral Component Interconnect Express (PCIE) communication of peripheral component interconnect express (PCI express) to copy original decoding data on the other display cards.
As an optional implementation manner, n graphics cards may be configured on the same server, and the number of encoding and decoding paths of each graphics card is M.
In this embodiment, when n × M conference terminals access the same video conference, each graphics card accesses M conference terminals, each graphics card performs M decoding, n × M conference terminals complete decoding in parallel, and n graphics cards have n × M original decoding data in total. And each path of code utilizes n × M paths of original decoding data, and each graphics card utilizes n × M paths of original decoding data to complete the fusion code of the M paths.
Therefore, the above embodiments utilize multi-display card, load balancing and cross-display card technologies, and coordinate the cooperative work of multiple display cards, so as to realize the encoding and decoding resources of the least display cards, perform decoding and encoding as much as possible on the premise of full encoding and full decoding, and each path of decoding can be shared by any path of encoding, thereby improving the resource utilization rate. In addition, the whole processes of decoding, zooming, splicing and encoding are carried out in the display card, and meanwhile, the ultra-strong computing capability of the GPU and the data interaction between the display cards are utilized, so that the use of the CPU is greatly reduced, and the bandwidth from the CPU to the display card is reduced.
The following describes, with reference to fig. 2, an embodiment of the above-mentioned method for collaboratively processing data of multiple display cards by way of example:
in this embodiment, it is preset that 60 conference terminals join a video conference through an MCU, and each conference terminal requests different private layouts, that is, the first conference terminal requests layout 1, the first conference terminal requests layout 2, the third conference terminal requests layout 3, … …, and the sixty conference terminal requests layout 60. And the 60 conference terminals are respectively distributed to the first display card GPU, the second display card GPU and the third display card GPU through the load balancer. For example, the conference terminals 1-20 are allocated on a first graphics card GPU, the conference terminals 21-40 are allocated on a second graphics card GPU, and the conference terminals 41-60 are allocated on a third graphics card GPU.
It should be noted that, for each conference terminal, after it is allocated to a certain video card, its encoding and decoding are completed on the video card. And decoding by 60 conference terminals in parallel, wherein each path of original YUV data is on the display card of each path of original YUV data after decoding. Wherein, YUV is divided into three components, "Y" represents brightness (Luma), i.e. gray value; "U" and "V" denote Chroma (Chroma) which describes the color and saturation of an image and is used to specify the color of a pixel.
The embodiment utilizes encoding and decoding resources to the maximum extent, 60 paths of decoding and encoding are evenly distributed on 3 display cards, each display card carries out 20 paths of decoding and 20 paths of encoding respectively, and each path of encoding in full encoding and full decoding is realized, wherein each path of encoding needs 60 paths of decoding. For each pass of encoding, the following operations are performed in parallel.
Taking the first conference terminal as an example, the decoding and encoding of the first conference terminal are both performed on the first video card, and the main process is as follows:
1) and copying each path of original decoding data obtained by decoding in the second and third video cards into the first video card.
2) In the first video card, scaling each path of original decoding data to the size specified in the private layout of the first conference terminal by using 1-20 paths of decoding data stored in the first video card and 40 paths of decoding data copied from the second video card and the third video card.
3) And the first video card splices each path of data after zooming.
4) And coding the spliced data, copying the coded code stream to a CPU (central processing unit), and transmitting the coded code stream to respective conference terminals connected with the first display card through the MCU.
In the embodiment, multiple display cards are utilized, and the multiple display cards are coordinated to cooperatively work through load balancing and a cross-display card technology, so that the application of full coding and full decoding is realized, one-path decoding is shared by multiple-path coding, and the number of the coding and decoding paths is increased. Moreover, by utilizing PCIE communication between the display cards, the use of a CPU is effectively reduced, and meanwhile, the bandwidth from the CPU to the display cards is reduced.
The whole processes of decoding, zooming, splicing and encoding are carried out in each display card, the ultra-strong computing capability of the GPU and the data interaction between the display cards are utilized, the bandwidth loss from the display cards to the CPU is further reduced, and the utilization rate of the CPU is reduced.
Product example:
to implement the above method, this embodiment discloses a multi-display-card video conference system, as shown in fig. 3, the system includes the following components: a multipoint Control unit (mcu), a load balancer, and a display card group, wherein:
the MCU is a central control device of the video conference system, and X conference terminals are accessed into the video conference through the MCU. And the load balancer is used for allocating the video cards for encoding and decoding for the conference terminals accessing the same video conference according to the quantity configuration of the video cards in the video card group. The video card group comprises n video cards and is used for completing the decoding of the video data of each conference terminal in parallel and generating original decoding data. And the video processing device is used for zooming and splicing by using the original decoding data on the n display cards according to the private layout requested by the X conference terminals accessed to the same video conference, and coding to obtain the fused code stream of each conference terminal. Wherein X and n are both non-zero natural numbers.
In an alternative embodiment, the n graphics cards are configured on the same server. Take 3 video cards to insert in the same video conference system server to exemplify:
in the first display card, the second display card and the third display card, the number of encoding and decoding paths of each display card is 20, then, the total encoding and decoding paths of the server are 60 at most, if 60 conference terminals join the same conference and each conference terminal requests different private layouts, then 60 paths of decoding and 60 paths of fusion encoding are needed at the moment, and 60 paths of decoding data are needed for each path of encoding, each display card respectively uses 60 paths of decoding data to complete respective 20 paths of data decoding, a fusion code stream is obtained, and the fusion code stream is correspondingly fed back to 20 conference terminals connected with the display card.
In an optional embodiment, the original decoded data is stored on the video cards corresponding to the conference terminals respectively.
In an optional embodiment, the n display cards adopt Peripheral Component Interconnect Express (PCIE) communication, and copy and share original decoding data with each other.
In an optional embodiment, the graphics card group includes n graphics cards configured in the same server, and the number of encoding and decoding paths of each graphics card is M. And each display card is accessed into M conference terminals, M paths of decoding are carried out on each display card, n display cards share n paths of original decoding data, and M paths of fused code streams are obtained respectively.
For example: n =3, when M =20, 60 conference terminals join the video conference through the MCU, and the 60 conference terminals are respectively allocated to the first video card, the second video card, and the third video card through the load balancer, and for each conference terminal, after it is allocated to a certain video card, its encoding and decoding are all completed on the video card. And decoding by 60 conference terminals in parallel, wherein each path of original YUV data is on the display card of each path of original YUV data after decoding.
In the embodiments, multiple display cards are utilized, and the multiple display cards are coordinated to cooperatively work through load balancing and a cross-display card technology, so that the application of full coding and full decoding is realized, one-path decoding is shared by multiple-path coding, and the number of the coding and decoding paths is increased. Moreover, by utilizing PCIE communication between the display cards, the use of a CPU is effectively reduced, and meanwhile, the bandwidth from the CPU to the display cards is reduced.
The whole processes of decoding, zooming, splicing and encoding are carried out in each display card, the ultra-strong computing capability of the GPU and the data interaction between the display cards are utilized, the bandwidth loss from the display cards to the CPU is further reduced, and the utilization rate of the CPU is reduced.
Accordingly, referring to fig. 4, the present disclosure also discloses a video conference cloud server, including: a central processing unit CPU, a memory, and a multi-display card video conferencing system as disclosed in any of the foregoing embodiments.
And the CPU is used for transmitting the fusion code stream processed by the display card group to the Xth conference terminal through the MCU.
In the embodiment, based on the Nvidia display card, through load balancing and a cross-display card technology, a plurality of display cards are coordinated to work cooperatively, and the display card coding and decoding resources are utilized to the maximum extent.
Here, it should be noted that: the description of the above embodiments is similar to the description of the above method embodiments, and has similar beneficial effects to the method embodiments, and therefore, the description is omitted. For technical details not disclosed in the embodiments of the present disclosure, please refer to the description of the embodiments of the method of the present disclosure for understanding, and therefore, for brevity, will not be described again.
It should be noted that, in this document, 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A multi-display-card data cooperative processing method is characterized by comprising the following steps:
distributing a video card for data processing for each conference terminal accessed to the video conference, and completing video data decoding of each conference terminal in parallel; the decoded original decoding data are respectively stored on the display card corresponding to each conference terminal;
acquiring the original decoding data on the rest of the video cards by the nth video card distributed for the Xth conference terminal, and zooming each path of the original decoding data by the nth video card according to the size appointed in the private layout requested by the Xth conference terminal to obtain intermediate data; wherein X and n are both non-zero natural numbers;
and the nth display card splices each path of the intermediate data after being zoomed, then codes the intermediate data to obtain a fused code stream, and feeds the fused code stream back to the Xth conference terminal.
2. The multi-display-card data coprocessing method of claim 1, wherein the conference terminal accesses the video conference through a video conference system center control device MCU.
3. The multi-display-card data coprocessing method of claim 1, wherein:
distributing a display card for data processing to each conference terminal accessed to the video conference through a load balancer; and/or the presence of a gas in the gas,
and the fused code stream is output to a Central Processing Unit (CPU) and is transmitted to the Xth conference terminal through a Multipoint Control Unit (MCU).
4. The multi-display-card data coprocessing method of any one of claims 1 to 3, wherein the nth display card acquires the original decoding data on the other display cards, further comprising:
and the nth display card adopts Peripheral Component Interconnect Express (PCIE) communication, and copies the original decoding data on the rest display cards.
5. The multi-display-card data coprocessing method of claim 4, wherein:
configuring n display cards on the same server, wherein the number of encoding and decoding paths of each display card is M;
when the n × M conference terminals access the same video conference, accessing each graphics card to the M conference terminals, each graphics card performing M decoding, completing decoding by the n × M conference terminals in parallel, and having n × M original decoding data in total;
and each path of code utilizes n × M paths of original decoding data, and each graphics card utilizes n × M paths of original decoding data to complete M paths of fusion codes.
6. A multi-display card video conferencing system, comprising:
the multipoint control unit MCU is central control equipment of the video conference system, and X conference terminals are accessed to the video conference through the MCU;
the load balancer is used for allocating the video cards for encoding and decoding for the conference terminals accessed to the same video conference according to the quantity configuration of the video cards in the video card group;
the video card group comprises n video cards and is used for completing the decoding of the video data of each conference terminal in parallel to generate original decoding data; the video conference system comprises n video cards, a conference terminal and a video conference system, wherein the n video cards are used for acquiring the original decoding data of the video cards and performing fusion processing on the decoding data of the video cards according to the private layout requested by X conference terminals accessed to the same video conference, and the original decoding data on the n video cards are used for zooming and splicing; wherein X and n are both non-zero natural numbers.
7. The multi-display card video conferencing system of claim 6, wherein:
the n display cards are configured on the same server; and/or the presence of a gas in the gas,
and the original decoding data are respectively stored on the display cards corresponding to the conference terminals.
8. The multi-display-card video conference system of claim 6, wherein the n display cards adopt Peripheral Component Interconnect Express (PCIE) communication, and copy and share the original decoding data with each other.
9. The multi-display-card video conference system according to any one of claims 6 to 8, wherein:
the display card group comprises n display cards which are configured in the same server, and the number of encoding and decoding paths of each display card is M;
and each display card is accessed into M conference terminals, each display card carries out M paths of decoding, and the n display cards share n paths of M original decoding data to respectively obtain M paths of fused code streams.
10. A video conference cloud server, comprising: a central processor CPU, a memory and a multi display card video conferencing system according to any of claims 6 to 9; and the CPU is used for transmitting the fusion code stream processed by the display card group to the Xth conference terminal through the MCU.
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| CN108234924A (en) * | 2018-02-02 | 2018-06-29 | 北京百度网讯科技有限公司 | Video mixed flow method, apparatus, equipment and computer-readable medium |
| CN110442450A (en) * | 2019-07-10 | 2019-11-12 | 北京云派网络科技有限公司 | Image processing equipment, method, apparatus and material calculate the system with rendering |
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| CN105578104A (en) * | 2015-12-30 | 2016-05-11 | 广东威创视讯科技股份有限公司 | Multi-video-card video data processing method and device |
| CN108234924A (en) * | 2018-02-02 | 2018-06-29 | 北京百度网讯科技有限公司 | Video mixed flow method, apparatus, equipment and computer-readable medium |
| CN110442450A (en) * | 2019-07-10 | 2019-11-12 | 北京云派网络科技有限公司 | Image processing equipment, method, apparatus and material calculate the system with rendering |
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