CN114650446B - Multi-channel video data self-adaptive transmission method and device and computer equipment - Google Patents
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
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- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
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- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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Abstract
The disclosure relates to a multichannel video data self-adaptive transmission method, a multichannel video data self-adaptive transmission device and computer equipment. The method comprises the following steps: receiving video data sent by a video source or a transmission node; under the condition that the performance parameters of the current transmission node are not matched with the received video data, the current transmission node displays the video data through a cache display strategy; and/or, under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are not matched with the received video data, the current transmission node or the video source transmits the adjusted video data to the adjacent transmission node through the self-adaptive transmission strategy. By adopting the method, when a video source sends video data according to a certain specific performance parameter, the transmission node which is not matched with the performance parameter can normally display the video after receiving the video.
Description
Technical Field
The present disclosure relates to the field of data processing technologies, and in particular, to a method and an apparatus for adaptive transmission of multi-channel video data, and a computer device.
Background
At present, with a video image processing system, especially a video image processing system with DisplayPort (DP, digital video Interface standard) of VESA (video Electronics Standards Association), MIPI (Mobile Industry Processor Interface standard), and HDMI (high definition Multimedia Interface, high definition Multimedia Interface standard), in the process of driving a display terminal such as a liquid crystal display or an organic light emitting diode to perform multi-channel display, when a video data transmission link has a complex topology structure and includes a large number of nodes and/or video terminals with different capabilities (performance parameters), if a video source cannot acquire the capabilities (performance parameters) of all the nodes and/or video terminals on the data transmission link topology, then when the video source transmits video data according to a certain specific capability (performance parameter), there will be nodes and/or video terminals that do not match this capability (performance parameter) and cannot display the video data properly after receiving it.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a method, an apparatus, and a computer device for adaptive transmission of multi-channel video data, in which when a video source transmits video data according to a certain specific capability (performance parameter), a node and/or a video terminal that do not match the capability (performance parameter) can normally display the video data after receiving the video.
In a first aspect, the present disclosure provides a multi-channel video data adaptive transmission method, applied to a video image processing system, where the video image processing system includes a video source, the video source transmits video data through transmission channels and a data frame structure, each of the transmission channels includes a plurality of transmission nodes, and the method includes:
receiving video data sent by a video source or a transmission node;
under the condition that the performance parameters of the current transmission node are not matched with the received video data, the current transmission node displays the video data through a cache display strategy, wherein the cache display strategy comprises the following steps: displaying by using the cached historical video data;
and/or the presence of a gas in the gas,
under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are not matched with the received video data, the current transmission node or the video source transmits the adjusted video data to the adjacent transmission node through a self-adaptive transmission strategy; the adaptive transmission strategy comprises: and adjusting the video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure.
In one embodiment, before receiving video data sent by a video source or a transmission node, the method further includes: and the performance parameters of all the transmission nodes are obtained through signaling interaction with all the transmission nodes.
In one embodiment, the pre-created data frame structure includes: an enable flag bit for determining whether to use the adaptive transmission policy;
a self-adaptive pixel data time slot for transmitting the adjusted video data;
a filling time slot for satisfying the filling requirement of the data frame structure;
an end flag for determining whether the reception of the video data through the adaptive transmission policy is ended;
the feedback flag bit is used for feeding back whether the video data is successfully received through the self-adaptive transmission strategy;
the end flag and the feedback flag are valid when the enable flag determines to use the adaptive transmission policy.
In one embodiment, the transmitting the adjusted video data to the immediate neighboring transmission node through the adaptive transmission policy includes:
adjusting the enabling zone bit to be effective, under the condition that the enabling zone bit is effective, enabling the enabling zone bit, and adjusting the self-adaptive pixel data time slot and the filling time slot in the pre-established data frame structure to be effective;
the method comprises the steps that a current transmission node or a video source sends adjusted video data to an adjacent transmission node, wherein the adjusted video data is determined by adjusting the format of the video data according to performance parameters of the adjacent transmission node by the current transmission node or the video source;
and the current transmission node or the video source receives the feedback zone bit sent by the adjacent transmission node, and the feedback zone bit represents the result of receiving and displaying the adjusted video data by the adjacent transmission node.
In one embodiment, the method further comprises: under the condition that the performance parameters of the current transmission node are matched with the received video data, the transmission node or the video source sends the video data to the current transmission node by using a standard frame structure;
and/or, in case the performance parameter of the immediate transmission node adjacent to the current transmission node or video source matches the received video data, the current transmission node or video source sends the video data to the immediate transmission node using a standard frame structure.
In one embodiment, the method further comprises: in case it is determined by the feedback flag that the transmission of the adjusted video data to the immediate neighboring transmission node by the adaptive transmission policy fails, processing the transmission of the video data by a preset policy, the preset policy comprising at least one of: the current transmission node or the video source informs the adjacent transmission node of displaying video data through the cache display strategy, and the current transmission node or the video source sends new adjusted video data to the adjacent transmission node;
or;
and the current transmission node or the video source informs the adjacent transmission node of displaying the video data through the cache display strategy and sends the next video data matched with the performance parameters of the adjacent transmission node to the adjacent transmission node.
In a second aspect, the present disclosure further provides a multi-channel video data adaptive transmission apparatus, applied to a video image processing system, where the video image processing system includes a video source, the video source transmits video data through a transmission channel and a data frame structure, each of the transmission channels includes a plurality of transmission nodes, the apparatus includes:
the video data receiving module is used for receiving video data sent by a video source or a transmission node;
a cache display module, configured to, when a performance parameter of a current transmission node is not matched with the received video data, display the video data by the current transmission node through a cache display policy, where the cache display policy includes: displaying by using the cached historical video data;
the self-adaptive display module is used for transmitting the adjusted video data to the adjacent transmission node by the current transmission node or the video source through a self-adaptive transmission strategy under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are not matched with the received video data; the adaptive transmission strategy comprises: and adjusting the video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure.
In a third aspect, the present disclosure also provides a computer device. The computer device comprises a memory having a computer program stored therein and a processor implementing the steps of the method when executing the computer program.
In a fourth aspect, the present disclosure also provides a computer-readable storage medium. The computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
In a fifth aspect, the present disclosure also provides a computer program product. The computer program product comprises a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method.
In the above embodiments, first, video data sent by different sending sources may be received, different processing manners are performed according to the type of the transmission node that receives the video data and the sending source, and when the performance parameter of the current transmission node does not match the received video data, the current transmission node displays the video data through a cache display policy. And under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are not matched with the received video data, the current transmission node or the video source transmits the adjusted video data to the adjacent transmission node through a self-adaptive transmission strategy. Under different conditions, when a video source or a transmission node sends video data according to a certain specific capability (performance parameter), the transmission node which is not matched with the capability (performance parameter) can normally display the video data through a cache display strategy or an adaptive transmission strategy after receiving the video.
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In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a video image processing system according to an embodiment;
FIG. 2 is a flow diagram illustrating a method for adaptive transmission of multi-channel video data according to one embodiment;
FIG. 3 is a diagram illustrating a preset frame structure according to an embodiment;
FIG. 4 is a block diagram of a standard frame structure in one embodiment;
FIG. 5 is a flowchart illustrating the step S600 according to an embodiment;
FIG. 6 is a flow chart illustrating matching of performance parameters according to an embodiment;
FIG. 7 is a flowchart illustrating an adaptive multi-channel video data transmission method according to another embodiment;
FIG. 8 is a block diagram showing the structure of an apparatus for adaptive transmission of multi-channel video data according to an embodiment;
FIG. 9 is a diagram illustrating an internal configuration of a computer device in accordance with an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is 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 present disclosure and are not intended to limit the present disclosure.
It should be noted that the terms "first," "second," and the like in the description and claims herein and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments herein described are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
In this document, the term "and/or" is only one kind of association relationship describing the associated object, meaning that three kinds of relationships may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
As described in the background art, when a video data transmission link topology structure is complex and includes a large number of nodes and/or video terminals with different capabilities (performance parameters), if a video source cannot acquire the capabilities (performance parameters) of all the nodes and/or video terminals on the data transmission link topology, when the video source sends video data according to a certain specific capability (performance parameter), the nodes and/or video terminals that are not matched with the capability (performance parameter) will receive the video data and cannot display the video data normally; meanwhile, if the video source sends the video data of the nodes and/or video terminals with different capabilities (performance parameters) in a time-sharing manner, the efficiency of a multi-channel video data sending link is seriously reduced, and further the utilization rate is reduced. The transmission node may comprise a node and/or a video terminal in this embodiment.
Therefore, to solve the above problem, embodiments of the present disclosure provide a method, an apparatus, and a computer device for multichannel video adaptive transmission.
First, a video image processing system according to the following embodiments of the present disclosure is described, as shown in fig. 1, including: the device comprises an embedded control module, an FPGA module, an external storage module, a fast storage module, a peripheral module, a video interface physical layer realization module and a video transmission link.
The embedded control module can use any embedded chip and system, and is mainly responsible for initiating signaling interaction, such as reading/writing a register, enabling/closing a video display module, peripheral control, parameter setting of the video display module and the like. The FPGA module is mainly responsible for implementing the implementation parts which need a large amount of data processing and low round-trip delay (latency) such as storage control, peripheral control, video interface IP core implementation and the like. The external storage module is mainly responsible for storing original data streams of video images needing to be displayed in the video image processing system, and the part is applied to storage media such as NandFlash, SSD and the like, but is not limited to the storage media. The fast storage module is used in an implementation process requiring a large amount of data processing and low round-trip delay (latency) inside an FPGA module, and in order to reduce delay and delay storage, the module applies a fast and low-delay physical device, such as, but not limited to, DDR 3. The peripheral modules include GPIO (General-purpose input/output), UART (Universal Asynchronous Receiver/Transmitter), USB (Universal Serial Bus), network port, and the like, but are not limited thereto. The video interface physical layer implementation module is mainly responsible for the physical layer implementation required for driving the display module, such as, but not limited to, TX/RX (Transmitter/Receiver) -PHY of DisplayPort, DPHY of MIPI, and the like.
Furthermore, the FPGA module includes a bus interaction module, an MCU (micro controller Unit, micro control module) video stream preprocessing module, a video data stream transmission control module, a clock control module, an embedded soft core control module, a bus controller module, an internal storage controller module, an external control module, a display clock generator module, a video timing controller module, and a video interface IP core module. The bus interaction module is mainly responsible for the functions of selection, decision and the like of all other modules connected to the bus interaction module. The MCU video stream preprocessing module is mainly responsible for preprocessing and converting the video data stream input from the external storage module according to the format and parameter types set by the system so as to facilitate the post-processing. And the video data stream transmission control module is mainly responsible for controlling the time sequence, parameters and the like of the data stream after data stream preprocessing and conversion. And the clock control module is mainly responsible for generating and controlling a global clock in the video image processing system. The embedded soft core control module is a control core of the FPGA module, and is mainly responsible for core functions of timing control, parameter configuration, physical process implementation and the like of all modules inside the FPGA module, and the embedded soft core control module can be used in the implementation of the core functions, such as Xilinx MicroBlaze and the like, but is not limited to the implementation. The bus controller module is mainly responsible for controlling all modules connected with the bus interaction module, but is not limited to this. The video pattern processing module is mainly responsible for mode conversion, timing control and the like of video image data streams corresponding to the video interface IP core module, but is not limited to this. The internal storage controller module is mainly responsible for controlling the fast storage module, including but not limited to writing/reading of data stream, frame control, and the like. The peripheral control module is mainly responsible for controlling all the peripheral modules, including enabling/shutting down of the peripheral, controlling the working mode, and the like, but not limited thereto. The display clock generator module is mainly responsible for time sequence control of all modules, including but not limited to the video interface IP core module and the video interface physical layer implementation module. The video timing controller module is mainly responsible for data conversion, timing control and other processing when the data input from the video pattern processing module is transmitted to the video interface IP core module, but is not limited thereto.
The transmission channel (video transmission link) includes a video source (video transmission source), a transmission node (embedded physical repeater, cable with source ID, detachable physical repeater, video receiving end, etc.), but is not limited thereto.
In an embodiment, as shown in fig. 2, a method for adaptive transmission of multi-channel video data is provided, which may be applied to the video image processing system shown in fig. 1 provided in this embodiment, or may be applied to other video image processing systems, which is exemplified by the image processing system shown in fig. 1 in this embodiment. The video image processing system includes: the video source transmits video data through a transmission channel and a data frame structure, and each transmission channel comprises a plurality of transmission nodes. The method comprises the following steps:
s200, receiving video data sent by a video transmission node, wherein the video transmission node comprises: a transmission node or video source that receives video data and transmits the video data.
The transmission node may include an intermediate transmission node and a terminal device between the video source and the terminal device, and in the video data transmission process, the transmission direction of the video data is fixed, and in general, the video source is transmitted to the terminal device from the intermediate transmission node or directly transmitted to the terminal device from the video source.
Specifically, in the video data transmission process, for the transmission policy, configuration is performed only for the upper and lower levels on the transmission path, for example, the video source transmits the video data to the terminal device through A, B and other intermediate transmission nodes, at this time, the video source to the node a, the node a to the node B, and the node B to the terminal device may respectively select corresponding transmission policies according to needs, define the upper transmission node as the current transmission node, and define the lower transmission node as the adjacent transmission node. Generally, a transmission node (e.g., a node a) directly connected to a video source generally configures the video source to meet transmission requirements, that is, transmitted video data meets performance parameters of the video source, and there is no mismatch problem.
S400, under the condition that the performance parameters of the current transmission node are not matched with the received video data, the current transmission node displays the video data through a cache display strategy, wherein the cache display strategy comprises the following steps: displaying by using the cached historical video data;
the performance parameter may be generally understood as the capability of the transmission node itself, and may include at least: one or more of timing parameters, reference clock, pixel clock, number of pixel processes per clock, frame rate, resolution, and local memory capacity.
Specifically, each piece of video data may have corresponding performance parameters, such as a frame rate, a resolution, and the like, and if the performance parameter of the current transmission node receiving the video data is not matched with the performance parameter of the video data and the video data is sent by a data source or a previous transmission node, for example: the resolution of the video data is greater than the resolution that can be supported by the current transmission node, etc. The current transmission node receiving the video data can display the video data through a preset cache display strategy. The video data cached before the current transmission node can be used for displaying so as to meet the normal display requirement of the transmission node and enable the display to be seamless.
S600, under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or video source are not matched with the received video data, the current transmission node or video source transmits the adjusted video data to the adjacent transmission node through a self-adaptive transmission strategy; the adaptive transmission strategy comprises: and adjusting the video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure.
Herein, the immediate vicinity of a transmission node may be generally understood as a transmission node spaced apart from the transmission node by a predetermined range. For example, there are A, B, C, D four sequentially connected transfer nodes. The immediate transmission node next to the a transmission node may be a B transmission node. The immediately adjacent transmission nodes adjacent to the B transmission node may be an a transmission node and a C transmission node.
The pre-created data frame structure may typically be a data frame structure that satisfies an adaptive transmission policy.
Specifically, if the performance parameter of the immediate transmission node receiving the video data does not match the performance parameter of the video data, and the video data is transmitted by the current transmission node or the video source adjacent to the immediate transmission node. The video data sent here is typically sent from a video source to the current transfer node. The current transmitting node then retransmits to the immediate transmitting node. If the performance parameter of the current transmission node is not matched with the video data sent by the video source after the current transmission node receives the video data sent by the video source, the current transmission node can also process according to the multi-channel video data adaptive transmission method provided by the embodiment. The video source can adjust the video data through a preset adaptive transmission strategy. The current transmitting node may receive and display the adjusted video data. (this is not generally the case, and if so this approach can be used).
If the performance parameter of the adjacent transmission node is not matched with the received video data, the video data can be adjusted according to the self-adaptive transmission strategy. The current node can adjust the video data through a preset adaptive transmission strategy. And receiving the video data sent by the current transmission node or the video source by the adjacent transmission node and displaying the adjusted video data. The adaptive transmission strategy comprises: and adjusting the video data according to the performance parameters of the transmission nodes adjacent to the transmission nodes to enable the video data to meet the performance parameters of the transmission nodes for receiving the video data, and transmitting the adjusted video data through a pre-established data frame structure. After the adjusted video data is received by the immediate vicinity transmission node, the immediate vicinity transmission node can normally display the video data after receiving the adjusted video data because the adjusted video data meets the performance parameters of the immediate vicinity transmission node.
It is understood that the immediate transmission nodes in this embodiment may include the transmission node immediately adjacent to the current node, and the transmission node immediately adjacent to the video source.
In one embodiment, the method further includes, before receiving video data sent by a video source or a transport node: and acquiring the performance parameters of all the transmission nodes through signaling interaction with all the transmission nodes.
Specifically, before receiving video data sent by a video source or a transmission node, the video source may further perform signaling interaction with all transmission nodes included in a video transmission link (transmission channel) to obtain performance parameters of all transmission nodes.
In this embodiment, before sending video data, the video source may obtain performance parameters of all the transmission nodes, so that the video source can know whether all the transmission nodes match the video data, and can determine the policy (including the above-mentioned cache display policy and the adaptive transmission policy) used by each transmission node more quickly.
In one embodiment, as shown in fig. 3, the pre-created data frame structure includes: an enable flag bit for determining whether to use the adaptive transmission policy;
a self-adaptive pixel data time slot for transmitting the adjusted video data;
a filling time slot for satisfying the filling requirement of the data frame structure;
an end flag bit for determining whether the adaptive transmission strategy receiving video data is ended;
and the feedback zone bit is used for feeding back whether the video data received by the adaptive transmission strategy is successful or not.
The end flag bit and the feedback flag bit are valid when the enable flag bit determines to use the adaptive transmission policy.
The pre-created data frame structure may further include: and adjusting the enabling flag bit to determine the time for starting to use the adaptive transmission strategy.
The adaptive strategy zone bit is effective only when the enabling zone bit is used, otherwise, the adaptive strategy zone bit does not occupy any time slot of a frame structure, so that the effective load of video data transmission is improved as much as possible, and the throughput is improved;
and the adaptive strategy flag bit is used for confirming how to use the adaptive transmission strategy and/or the cache display strategy in the subsequent frame structure and video data from the current transmission node or the video source to the adjacent transmission node. Specific modes of use can be found in the following table 1 video display table.
Specifically, in this embodiment, as shown in fig. 4, the standard frame structure may include BS (Blanking Start), VB-ID (Vertical Blanking Identifier), Mvid (timer value of Video data), Naud (timer value of audio data), Dummy Video (for Dummy data padding), BE (Blanking End), pixel data (for transmission of Video data), FS (Fill Start), Fill Video (for padding when data is insufficient), and FE (Fill End). However, the pre-created data frame structure may add part of the flag bits and slots to the structure of the standard frame in general, as shown in fig. 3, including: BS, enable flag bit, adaptive policy flag bit, VB-ID, adjust enable flag bit, Mvid, Naud, Dummy Video, end and feedback flag bit, BE, adaptive pixel data slot, FS, New Fill Video, FE, and BS.
The enable flag is used to determine whether the transmission node uses the adaptive transmission policy, and when the adaptive transmission policy is used, the enable flag is valid, and meanwhile, the remaining newly added parts (such as the following adaptive pixel data slot, fill slot, end flag, feedback flag, etc.) in the data frame structure are valid and occupy the corresponding slots.
The adaptive pixel data time slot can replace the pixel data time slot in the standard frame structure under the normal condition, and is used for transmitting the adaptive transmission of new pixel data generated after the adaptive transmission strategy, and the partial content of the pixel data is completely different from the partial content of the pixel data in the original standard frame structure. After the adaptive transmission strategy, the video data usually adapts to the performance parameters of the transmission node, so that the video data generates new pixel data, and the new pixel data can be transmitted through the adaptive pixel data time slot.
And filling time slots, wherein after new pixel data is generated and transmitted, the filling time slots are used for filling for new capacity transmission so as to meet the filling requirement of a data frame structure which is created in advance. The role of this part is roughly the same as for Fill Video in a standard frame structure. Filling the slots typically includes removing the remainder of the resources occupied by the generation and transmission of new pixel data.
And an end flag for determining whether the reception of the video data through the adaptive transmission policy is ended.
And the feedback identification bit is used for feeding back whether the video data is successfully received through the self-adaptive transmission strategy. The ending flag bit and the feedback flag bit are only effective under the condition that the enabling flag bit determines to use the self-adaptive transmission strategy, otherwise, the ending flag bit and the feedback flag bit do not occupy any time slot of a data frame structure, so that the effective load of the multi-channel video data self-adaptive transmission is improved as much as possible, and further the throughput is improved.
In this embodiment, the requirement of the adaptive transmission strategy can be met through the flag bit and the time slot in the data frame structure, and the payload of the adaptive transmission of the multichannel video data can be promoted as much as possible, thereby promoting the throughput.
In some exemplary embodiments, the manner in which different types of video data (including video data matching performance parameters and video data non-matching performance parameters) are displayed by the current and immediate transmission nodes may be found in the video display table of table 1.
TABLE 1 video display watch
In one embodiment, as shown in fig. 5, the transmitting the adjusted video data to the immediate neighboring transmission node by the adaptive transmission policy includes:
s602, the enabling flag bit is adjusted to be valid, and the enabling flag bit is enabled under the condition that the enabling flag bit is valid, and the adaptive pixel data time slot and the filling time slot in the pre-created data frame structure are adjusted to be valid.
S604, the current transmission node or the video source sends the adjusted video data to the adjacent transmission node, and the adjusted video data is determined by adjusting the format of the video data according to the performance parameters of the adjacent transmission node by the current transmission node or the video source.
S606, the current transmission node or the video source receives the feedback zone bit sent by the adjacent transmission node, and the feedback zone bit represents the result of receiving and displaying the adjusted video data by the adjacent transmission node.
Specifically, the enable flag is adjusted to be valid. In response to the enable flag being valid, the current transmission node or video source uses an adaptive transmission strategy and transmits the adjusted video data using a pre-created data frame structure. The time slots in the pre-created data frame structure are all adjusted to be valid. And adjusting the time slot of the self-adaptive pixel data in the pre-established data frame structure and filling the time slot to be effective. And enabling an ending zone bit and feeding back a zone bit. And responding to the fact that the performance parameters of the video data and the performance parameters of the adjacent transmission nodes are not matched, and adjusting the video data by the current transmission node or the video source according to the performance parameters of the adjacent transmission nodes to enable the video data to meet the performance parameters of the adjacent transmission nodes. Such as frame rate, resolution, etc., of the video data may be adjusted. And sending the adjusted video data to the adjacent transmission node, and receiving and displaying the adjusted video data of the current transmission node or the video source by the adjacent transmission node. And if the receiving and displaying are successful, adjusting the feedback zone bit, and feeding back the successful receiving and displaying result to the current transmission node or video source through the feedback zone bit. The current transport node, the video source and the immediate following transport node do not need to do anything. And if the receiving and/or displaying fails, adjusting the feedback zone bit, and feeding back the receiving and/or displaying failure result to the current transmission node or video source through the feedback zone bit. When the reception and/or display is determined to fail by the feedback flag, the video source or the current transmission node may process the video data according to a preset policy, which may be referred to in the following embodiments.
In this embodiment, performing an adaptive transmission policy through a pre-created data frame structure enables the video data to be displayed normally after the video data is received by the immediate transmission node that does not match this capability (performance parameter).
In addition, it can be understood that information interaction among the video source, the current transmission node and the adjacent transmission node can be performed in the form of reading and writing fields. For example, the video source may be configured with adaptive adjustment instructions, which may include: the multi-channel capability adaptation use field, the multi-channel capability adjustment start field, the multi-channel capability adjustment confirmation field, the multi-channel capability adjusted policy response field, and the like. The multi-channel capability adaptive use field is used for communicating multi-channel capability between the current transmission node or the video source and the adjacent transmission node, and can be used for determining whether the performance parameters of the adjacent transmission node are matched with video data so as to determine whether an adaptive transmission strategy is used between the current transmission node or the video source and the adjacent transmission node; the multichannel capability adjustment starting field is used for representing the start of sending the adaptive transmission strategy video data to the adjacent transmission nodes by the current transmission node so as to facilitate the adjacent transmission nodes to receive the video data according to the correct time slot (a preset data frame structure); the multi-channel capability adjustment confirmation field is used for feeding back a result of the multi-channel video data self-adaptive transmission strategy to the current transmission node or a video source in the vicinity of the transmission node, and the result can be success or failure; and the strategy response field after the multi-channel capability adjustment is used for processing the video data of the self-adaptive transmission strategy according to the predetermined strategy.
During actual interaction, the video source end may write information to be sent to the transmission nodes into corresponding fields (e.g., a multi-channel capability adaptive use field, a multi-channel capability adjustment start field), and send the information to each transmission node along with an adaptive adjustment instruction. The transmission node may also write the content to be fed back to the video source end and/or the adjacent transmission node into a corresponding field (e.g., a channel capability adjustment acknowledgement field), and send the content to the video source end and/or the adjacent transmission node along with the adaptive adjustment instruction.
In one embodiment, as shown in fig. 6, the method further comprises:
s802, under the condition that the performance parameters of the current transmission node are matched with the received video data, the transmission node or the video source sends the video data to the current transmission node by using a standard frame structure;
and/or the presence of a gas in the atmosphere,
s804, under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or video source are matched with the received video data, the current transmission node or video source sends the video data to the adjacent transmission node by using a standard frame structure.
Specifically, when the video data sent by the previous transmission node or the video source is matched with the performance parameter of the current transmission node, the enable flag bit is set to be invalid, and all the time slots in the pre-created data frame structure are invalid. The previous transmission node or video source transmits video data to the current transmission node using a standard frame structure (the standard frame structure shown in fig. 3 described above). And after the current transmission node receives the video data, normally displaying the video data.
And/or setting the enabling flag bit to be invalid when the video data sent by the current transmission node or the video source is matched with the performance parameters of the adjacent transmission node. Slots in the pre-created data frame structure are all invalid. The current transmission node or video source sends video data to the immediate transmission node using a standard frame structure. The video data is normally implemented after being received by the immediate transmission node.
In this embodiment, when the performance parameters of the current transmission node and/or the immediate transmission node satisfy the video data, the video data can be normally displayed without additional other operations by using the standard frame structure for transmission.
In one embodiment, the method further comprises: the method further comprises the following steps: in case it is determined by the feedback flag that the transmission of the adjusted video data to the immediate transmission node by the adaptive transmission policy fails, processing the transmission of the video data by a preset policy, the preset policy comprising at least one of: the current transmission node or the video source informs the adjacent transmission node to display video data through the cache display strategy, and the current transmission node or the video source sends new adjusted video data to the adjacent transmission node;
or;
and the current transmission node or the video source informs the adjacent transmission node of displaying the video data through the cache display strategy and sends the next video data matched with the performance parameters of the adjacent transmission node to the adjacent transmission node.
Specifically, when receiving of the video data adjusted by the current transmission node or the video source fails in the immediate vicinity of the transmission node, the failure information may be fed back to the current transmission node or the video source by feeding back the flag bit. The current transmission node or video source may process the video data according to a preset policy. The preset policy includes at least one of: the current transmission node or the video source sends first notification information to the adjacent transmission node, in response to the first notification information, the adjacent transmission node displays video data through a cache display strategy, waits for the subsequent current transmission node or the video source to transmit new adjusted video data to the adjacent transmission node, and receives and displays the new adjusted video data. Or the current transmission node or the video source sends second notification information to the adjacent transmission node, the adjacent transmission node displays video data through a cache display strategy in response to the second notification information, waits for the subsequent current transmission node or the video source to send the video data matched with the performance parameters of the adjacent transmission node, and the adjacent transmission node receives and displays the video data matched with the performance parameters.
In this embodiment, in the case where the adaptive transmission policy fails, the transmission of video data may be processed by a policy set in advance so that a video may be normally displayed in the immediate vicinity of the transmission node.
In an embodiment, as shown in fig. 7, another multi-channel video data adaptive transmission method is provided in an embodiment of the present disclosure, and is applied to a video image processing system, where the video image processing system includes a video source, and the video source transmits video data through transmission channels and a data frame structure, and each of the transmission channels includes a plurality of transmission nodes, where the method includes:
s702, receiving video data sent by a video source or a transmission node.
S704, when the performance parameter of the current transmission node is not matched with the received video data, the current transmission node displays the video data through a cache display policy, where the cache display policy includes: and displaying by using the cached historical video data.
S706, under the condition that the performance parameter of the current transmission node is matched with the received video data, the transmission node or the video source sends the video data to the current transmission node by using a standard frame structure.
S708, under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or video source are not matched with the received video data, the current transmission node or video source transmits the adjusted video data to the adjacent transmission node through a self-adaptive transmission strategy; the adaptive transmission strategy comprises: and adjusting the video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure.
S710, under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are matched with the received video data, the current transmission node or the video source sends the video data to the adjacent transmission node by using a standard frame structure.
And S712, determining that the adjusted video data is failed to be transmitted to the adjacent transmission node through the adaptive transmission strategy through the feedback zone bit.
S714, the transmission of the video data is processed through a preset strategy, wherein the preset strategy at least comprises one of the following items: the current transmission node or the video source informs the adjacent transmission node of displaying video data through the cache display strategy and receives new adjusted video data sent by the current transmission node or the video source;
or;
the current transmission node or the video source informs the adjacent transmission node to display the video data through the cache display strategy and receives the next video data matched with the performance parameters of the adjacent transmission node;
for specific implementation and limitation in this embodiment, reference may be made to the above-mentioned embodiments, and repeated descriptions are not provided herein.
It should be understood that, although the steps in the flowcharts related to the embodiments described above are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be rotated or alternated with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the present disclosure further provides a multi-channel video data adaptive transmission apparatus for implementing the above-mentioned multi-channel video data adaptive transmission method. The implementation scheme for solving the problem provided by the apparatus is similar to the implementation scheme described in the above method, so specific limitations in one or more embodiments of the following multi-channel video data adaptive transmission apparatus may refer to the above limitations on the multi-channel video data adaptive transmission method, and details are not described herein again.
In one embodiment, as shown in fig. 8, there is provided a multi-channel adaptive video data transmission apparatus 800 applied to a video image processing system, the video image processing system including a video source, the video source transmitting video data through transmission channels and a data frame structure, each of the transmission channels including a plurality of transmission nodes, the apparatus including: a video data receiving module 802, a cache display module 804 and an adaptive display module 806, wherein:
a video data receiving module 802, configured to receive video data sent by a video source or a transmission node;
a cache display module 804, configured to, when a performance parameter of a current transmission node does not match the received video data, display, by the current transmission node, the video data through a cache display policy, where the cache display policy includes: displaying by using the cached historical video data;
an adaptive display module 806, configured to transmit, by using an adaptive transmission policy, the adjusted video data to an adjacent transmission node when a performance parameter of the adjacent transmission node adjacent to the current transmission node or the video source is not matched with the received video data; the adaptive transmission strategy comprises: and adjusting the video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure.
In one embodiment of the apparatus, the apparatus further comprises: and the interaction module is used for interacting with all the transmission nodes through signaling to acquire the performance parameters of all the transmission nodes.
In one embodiment of the apparatus, the pre-created data frame structure comprises: an enable flag bit for determining whether to use the adaptive transmission policy;
a self-adaptive pixel data time slot for transmitting the adjusted video data;
a filling time slot for satisfying the filling requirement of the data frame structure;
an end flag for determining whether the reception of the video data through the adaptive transmission policy is ended;
and the feedback flag bit is used for feeding back whether the video data is successfully received through the self-adaptive transmission strategy.
In an embodiment of the apparatus, the end flag, the feedback flag, and the enable flag are valid if the enable flag determines that the adaptive transmission scheme is used.
In one embodiment of the apparatus, the adaptive display module 806 comprises: and the adjusting module is used for adjusting the enabling zone bit to be effective, starting the enabling zone bit under the condition that the enabling zone bit is effective, and adjusting the self-adaptive pixel data time slot and the filling time slot in the pre-established data frame structure to be effective.
And the adjusting data receiving module is used for receiving the video data after the current transmission node or the video source is adjusted, and the adjusted video data is determined by the current transmission node or the video source according to the format of the adjusting video data of the performance parameter close to the transmission node.
And the receiving result feedback module is used for sending the feedback zone bit to the current transmission node or the video source according to the result of receiving and displaying the adjusted video data by the adjacent transmission node.
In an embodiment of the apparatus, the apparatus further includes a first standard display module, configured to, in case that a performance parameter of a current transport node matches the received video data, the transport node or the video source sends the video data to the current transport node using a standard frame structure.
And the second standard display module is used for sending the video data to the adjacent transmission node by the current transmission node or the video source by using a standard frame structure under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are matched with the received video data.
In an embodiment of the apparatus, the policy processing module is configured to, in a case where it is determined through the feedback flag that the transmission of the adjusted video data to the immediate transmission node through the adaptive transmission policy fails, process the transmission of the video data through a preset policy, where the preset policy includes at least one of: the current transmission node or the video source informs the adjacent transmission node of displaying video data through the cache display strategy, and the current transmission node or the video source sends new adjusted video data to the adjacent transmission node;
or;
and the current transmission node or the video source informs the adjacent transmission node of displaying the video data through the cache display strategy and sends the next video data matched with the performance parameters of the adjacent transmission node to the adjacent transmission node.
All or part of each module in the multichannel video data self-adaptive transmission device can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 9. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program to run on the non-volatile storage medium. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless communication can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method of adaptive transmission of multi-channel video data. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
Those skilled in the art will appreciate that the configuration shown in fig. 9 is a block diagram of only a portion of the configuration associated with the disclosed aspects and does not constitute a limitation on the computing device to which the disclosed aspects apply, as a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In an embodiment, a computer device is provided, comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
In an embodiment, a computer program product is provided, comprising a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by hardware instructions of a computer program, which may be stored in a non-volatile computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. Any reference to memory, databases, or other media used in the embodiments provided by the present disclosure may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include a Read-Only Memory (ROM), a magnetic tape, a floppy disk, a flash Memory, an optical Memory, a high-density embedded nonvolatile Memory, a resistive Random Access Memory (ReRAM), a Magnetic Random Access Memory (MRAM), a Ferroelectric Random Access Memory (FRAM), a Phase Change Memory (PCM), a graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases involved in embodiments provided by the present disclosure may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided in this disclosure may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic, quantum computing based data processing logic, etc., without limitation.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several implementation modes of the present disclosure, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present disclosure. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the disclosure, and these changes and modifications are all within the scope of the disclosure. Therefore, the protection scope of the present disclosure should be subject to the appended claims.
Claims (10)
1. A multi-channel video data self-adaptive transmission method is applied to a video image processing system, and is characterized in that the video image processing system comprises a video source, the video source transmits video data through transmission channels and a data frame structure, each transmission channel comprises a plurality of transmission nodes, and the method comprises the following steps:
receiving video data sent by a video source or a transmission node;
under the condition that the performance parameters of the current transmission node are not matched with the received video data, the current transmission node displays the video data through a cache display strategy, wherein the cache display strategy comprises the following steps: displaying by using the cached historical video data;
and/or the presence of a gas in the atmosphere,
under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are not matched with the received video data, the current transmission node or the video source transmits the adjusted video data to the adjacent transmission node through a self-adaptive transmission strategy; the adaptive transmission strategy comprises: adjusting video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure;
wherein the pre-created data frame structure comprises: an enable flag bit for determining whether to use the adaptive transmission policy; a self-adaptive pixel data time slot for transmitting the adjusted video data; a filling time slot for satisfying the filling requirement of the data frame structure; an end flag for determining whether the reception of the video data through the adaptive transmission policy is ended; a feedback flag bit for feeding back whether the video data is successfully received through the adaptive transmission strategy; the end flag and the feedback flag are valid when the enable flag determines to use the adaptive transmission policy.
2. The method of claim 1, wherein before receiving the video data sent by the video source or the transport node, the method further comprises: and the performance parameters of all the transmission nodes are obtained through signaling interaction with all the transmission nodes.
3. The method of claim 1, wherein transmitting the adjusted video data to the immediate vicinity transmission node via an adaptive transmission policy comprises:
adjusting the enabling zone bit to be effective, under the condition that the enabling zone bit is effective, enabling the enabling zone bit, and adjusting the self-adaptive pixel data time slot and the filling time slot in the pre-established data frame structure to be effective;
the method comprises the steps that a current transmission node or a video source sends adjusted video data to an adjacent transmission node, wherein the adjusted video data is determined by adjusting the format of the video data according to performance parameters of the adjacent transmission node by the current transmission node or the video source;
and the current transmission node or the video source receives the feedback zone bit sent by the adjacent transmission node, and the feedback zone bit represents the result of receiving and displaying the adjusted video data by the adjacent transmission node.
4. The method of claim 1, further comprising: under the condition that the performance parameters of the current transmission node are matched with the received video data, the transmission node or the video source sends the video data to the current transmission node by using a standard frame structure;
and/or, in case the performance parameter of the immediate transmission node adjacent to the current transmission node or video source matches the received video data, the current transmission node or video source sends the video data to the immediate transmission node using a standard frame structure.
5. The method of claim 3, further comprising: in case it is determined by the feedback flag that the transmission of the adjusted video data to the immediate transmission node by the adaptive transmission policy fails, processing the transmission of the video data by a preset policy, the preset policy comprising at least one of: the current transmission node or the video source informs the adjacent transmission node to display video data through the cache display strategy, and the current transmission node or the video source sends new adjusted video data to the adjacent transmission node;
or;
and the current transmission node or the video source informs the adjacent transmission node of displaying the video data through the cache display strategy and sends the next video data matched with the performance parameters of the adjacent transmission node to the adjacent transmission node.
6. A multi-channel video data self-adaptive transmission device is applied to a video image processing system, and is characterized in that the video image processing system comprises a video source, the video source transmits video data through a transmission channel and a data frame structure, each transmission channel comprises a plurality of transmission nodes, and the device comprises:
the video data receiving module is used for receiving video data sent by a video source or a transmission node;
a cache display module, configured to, when a performance parameter of a current transmission node is not matched with the received video data, display the video data by the current transmission node through a cache display policy, where the cache display policy includes: displaying by using the cached historical video data;
the self-adaptive display module is used for transmitting the adjusted video data to the adjacent transmission node by the current transmission node or the video source through a self-adaptive transmission strategy under the condition that the performance parameters of the adjacent transmission node adjacent to the current transmission node or the video source are not matched with the received video data; the adaptive transmission strategy comprises: adjusting video data according to the performance parameters of the adjacent transmission nodes, and transmitting the adjusted video data to the adjacent transmission nodes through a pre-established data frame structure;
wherein the pre-created data frame structure comprises: an enable flag bit for determining whether to use the adaptive transmission policy; a self-adaptive pixel data time slot for transmitting the adjusted video data; a filling time slot for satisfying the filling requirement of the data frame structure; an end flag for determining whether the reception of the video data through the adaptive transmission policy is ended; a feedback flag bit for feeding back whether the video data is successfully received through the adaptive transmission strategy; the end flag and the feedback flag are valid when the enable flag determines to use the adaptive transmission policy.
7. The apparatus of claim 6, further comprising: and the interaction module is used for interacting with all the transmission nodes through signaling to acquire the performance parameters of all the transmission nodes.
8. The apparatus of claim 6, wherein the adaptive display module comprises:
an adjusting module, configured to adjust the enable flag to be valid, and enable the enable flag when the enable flag is valid, and adjust the adaptive pixel data time slot and the padding time slot in the pre-created data frame structure to be valid;
the adjusting data receiving module is used for receiving video data after the current transmission node or video source is adjusted, and the adjusted video data is determined by adjusting the format of the video data according to the performance parameters of the adjacent transmission node by the current transmission node or video source;
and the receiving result feedback module is used for sending the feedback zone bit to the current transmission node or the video source according to the result of receiving and displaying the adjusted video data by the adjacent transmission node.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 5.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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