CN106330409A - Multipath TS video stream transmission method and system thereof - Google Patents
Multipath TS video stream transmission method and system thereof Download PDFInfo
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- CN106330409A CN106330409A CN201610743432.0A CN201610743432A CN106330409A CN 106330409 A CN106330409 A CN 106330409A CN 201610743432 A CN201610743432 A CN 201610743432A CN 106330409 A CN106330409 A CN 106330409A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/61—Network streaming of media packets for supporting one-way streaming services, e.g. Internet radio
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1685—Details of the supervisory signal the supervisory signal being transmitted in response to a specific request, e.g. to a polling signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
- H04L43/103—Active monitoring, e.g. heartbeat, ping or trace-route with adaptive polling, i.e. dynamically adapting the polling rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2183—Cache memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/23106—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion involving caching operations
Abstract
The invention discloses a multipath TS video stream transmission method and a system thereof. The method comprises the following steps: separately storing to-be-transmitted multipath TS video streams in multiple channels of a first cache; judging whether TS video streams are stored in the channel of the first cache by using a polling mechanism, if so, reading the TS video streams from the channel, and carrying out a packaging operation on the TS video streams by using a preset network protocol to obtain a protocol data packet; otherwise, continuing to judge the next channel; and sending the protocol data packet into the network in a unicast or multicast manner, and continuing to adopt the polling mechanism to judge the next channel after the protocol data packet is sent successfully. According to the multipath TS video stream transmission method disclosed by the invention, since the polling mechanism is adopted, the network transmission operations of multipath TS video streams can be simultaneously managed, and the transmission efficiency of the TS video streams is improved.
Description
Technical field
The present invention relates to technical field of data transmission, particularly relate to a kind of multichannel TS video stream transmission method and be
System.
Background technology
Along with the propelling of the integration of three networks, increasing computer networking technology extensively should in broadcast television industry
With, TS over IP technology is the representative that network technology is applied in radio data system, it will compression after TS video flowing with
IP unicast, multicast form send and are transmitted to network.
The mode of transmission TS video flowing uses unicast communication at present, and this kind of transmission means is more in TS video flowing quantity
Situation time efficiency of transmission relatively low.
Therefore, how providing a kind of efficiency of transmission much higher road TS video stream transmission method and system thereof is art technology
The problem that personnel are presently required solution.
Summary of the invention
It is an object of the invention to provide a kind of multichannel TS video stream transmission method and system thereof, by using polling mechanism,
The network transmission operation of multichannel TS video flowing can be managed simultaneously, improve the efficiency of transmission of TS video flowing.
For solving above-mentioned technical problem, the invention provides a kind of multichannel TS video stream transmission method, including:
Step s101: multichannel TS video flowing waiting for transmission is stored respectively in multiple passages of the first caching；
Step s102: use whether polling mechanism has stored TS video flowing in judging the passage of described first caching, if
Have, enter step s103；Otherwise, continue to judge next passage；
Step s103: read described TS video flowing in described passage, and use default procotol to described TS video
Stream carries out package operation and obtains protocol data bag；
Step s104: described protocol data bag is sent in the way of unicast or multicast to network, after sending successfully, returns
Return step s102.
Preferably, described in described passage, read described TS video flowing after also include:
FEC verification bag is generated in real time according to described TS video flowing；
Described FEC verification bag is sent to network together with described protocol data bag.
Preferably, described according to described TS video flowing generate in real time FEC verification bag process particularly as follows:
Raw column data that have in advance in reading FEC row cache and FEC row caching respectively, that last time, operation generated, and will
Row data writing line input-buffer, writes column data in row input-buffer；
Described TS video flowing is copied as two parts, and according to this and described column data carries out xor operation with described line number respectively,
Obtain FEC row packet and FEC column data bag and correspondence is stored in described FEC row cache and described FEC row caching is interior respectively；Institute
State FEC row packet and described FEC column data bag is described FEC verification bag.
Preferably, described FEC row cache is ram in slice, and described FEC row caching is off-chip DDR2.
Preferably, described step s101 process particularly as follows:
Described multichannel TS video flowing waiting for transmission is respectively converted into the data stream of default size；
After sync byte 0x47 locks, data stream described in each road is stored respectively each passage to described first caching
In.
Preferably, described default procotol is specially udp protocol or Real-time Transport Protocol.
For solving above-mentioned technical problem, present invention also offers a kind of multichannel TS video stream transmission system, including:
Data cache module, for being stored respectively in multiple passages of the first caching by multichannel TS video flowing waiting for transmission
In；
Poll judge module, for using whether polling mechanism has stored TS video in judging the passage of described first caching
Stream, if it has, triggered protocol bag generation module；Otherwise, continue to judge next passage；
Described protocol package generation module, for reading described TS video flowing in described passage, and uses default network association
View carries out package operation and obtains protocol data bag described TS video flowing；
Network sending module, for being sent to network in the way of unicast or multicast by described protocol data bag, and touches
Send out poll judge module described and continue to judge next passage.
Preferably, also include:
FEC verifies bag generation module, for generating FEC verification bag in real time according to described TS video flowing；
Described network sending module is additionally operable to send to network described FEC verification bag together with described protocol data bag
In.
The invention provides a kind of multichannel TS video stream transmission method and system thereof, it is possible to deposited respectively by multichannel TS video flowing
It is stored in multiple passages of caching, and whether stores TS video flowing, if having, then in being checked each passage in turn by polling mechanism
This TS video flowing is carried out package operation, and the protocol data bag generated is sent to network.Visible, the present invention is by using
Polling mechanism, it is achieved that the network transmission operation of management multichannel TS video flowing simultaneously, substantially increases the transmission effect of TS video flowing
Rate.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in prior art and embodiment
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only some enforcements of the present invention
Example, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtains according to these accompanying drawings
Obtain other accompanying drawing.
The flow chart of the process of a kind of multichannel TS video stream transmission method that Fig. 1 provides for the present invention；
The structural representation of a kind of multichannel TS video stream transmission system that Fig. 2 provides for the present invention.
Detailed description of the invention
The core of the present invention is to provide a kind of multichannel TS video stream transmission method and system thereof, by using polling mechanism,
The network transmission operation of multichannel TS video flowing can be managed simultaneously, improve the efficiency of transmission of TS video flowing.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
The invention provides a kind of multichannel TS video stream transmission method, shown in Figure 1, Fig. 1 provide for the present invention one
Plant the flow chart of the process of multichannel TS video stream transmission method；The method includes:
Step s101: multichannel TS video flowing waiting for transmission is stored respectively in multiple passages of the first caching；
Wherein, the first caching here is specially ram in slice.It addition, multichannel here is specially 8 tunnels.Certainly, the present invention
To being all not particularly limited above.
Step s102: use whether polling mechanism has stored TS video flowing, if it has, enter in judging the first passage cached
Enter step s103；Otherwise, continue to judge next passage；
Here polling mechanism is a kind of handling process, CPU timing send inquiry, whether sequentially inquire each passage
Storage has TS video flowing, has and i.e. carries out follow-up service process, and next passage, then continuous Zhou Erfu are inquired again in service after terminating
Begin.
Step s103: read TS video flowing in passage, and use default procotol that TS video flowing is carried out package behaviour
Make to obtain protocol data bag；
Concrete, default procotol here is specially UDP (User Datagram Protocol, user datagram
Agreement) agreement or RTP (Real-time Transport Protocol, RTP) agreement.Udp protocol is a kind of nothing
The network transmission protocol connected, this agreement does not has congestion control, the congested transmission rate that will not make source host that network occurs
Reducing, meet the network transmission requirement of real-time video, being therefore applicable to some needs requirement of real-time height, the less ring of mistake
Border.
Step s104: sent in the way of unicast or multicast to network by protocol data bag, after sending successfully, returns step
Rapid s102.
Wherein, clean culture refers between main frame communication mode " one to one ", the switch in network and router logarithm
Do not replicate according to only carrying out forwarding.Multicast is the communication mode of " group one to one " between main frame, namely adds same
The main frame of group can receive all data in this group, and switch in network and router are only to having demander to replicate and turning
Send out its desired data.
For convenience of understanding to the present invention program, below just the work process of the polling mechanism in the present invention do and be specifically situated between
Continue:
MUX_ST_IDLE: judge ts_buf_ready=' 0 ', then whether each passage of poll has TS video flowing, works as judgement
When having TS video flowing to a certain road, jump to MUX_ST_PROC_CH.
MUX_ST_PROC_CH: read the data of (7x188+8) byte the TS video flowing in this paths, and write
During ts_page_ram first caches.Return MUX_ST_IDLE, and ts_buf_ready put 1, inform logic below, until after
Ts_buf_ready is reset when providing ack_ts_buf_ready_i=1 by the logic in face.
As preferably, also include after reading TS video flowing in passage:
FEC (Forward Error Correction, forward error correction) verification bag is generated in real time according to TS video flowing；
FEC verification bag is sent to network together with protocol data bag.
Concrete, according to TS video flowing generate in real time FEC verification bag process particularly as follows:
Raw column data that have in advance in reading FEC row cache and FEC row caching respectively, that last time, operation generated, and will
Row data writing line input-buffer, writes column data in row input-buffer；
TS video flowing copies as two parts, and according to this and column data carries out xor operation with line number respectively, obtains FEC row data
Bag and FEC column data bag correspondence is stored in FEC row cache and FEC row caching is interior respectively；FEC row packet and FEC columns
It is FEC verification bag according to bag.
It is understood that by increasing FEC verification operation, it is possible to increase the stability of TS video flowing transmission, reduces and passes
The appearance of defeated fault.
As preferably, FEC row cache here is ram in slice, and FEC row caching is off-chip DDR2.
Wherein, step s101 process particularly as follows:
Multichannel TS video flowing waiting for transmission is respectively converted into the data stream of default size；
After sync byte 0x47 locks, each circuit-switched data stream is stored respectively to each passage of the first caching.
Here default size can be 25M, and certainly, this is not construed as limiting by the present invention.
It addition, the operation of step s101 can be carried out by the asynchronous FIFO module within FPGA.
For convenience of understanding to the present invention program, below generation that just protocol data bag in the present invention and FEC verification are wrapped
And transmitting procedure does simple introduction:
TX_ST_IDLE: original state, it may be judged whether have received ready_buffer_in and fec_in_ready signal
(judging whether ready_buffer_in and fec_in_ready is 1, the most then show the above-mentioned signal received), wherein
Ready_buffer_in signal represents that ts_page_ram second caches that (the TS video flowing read out in passage is stored in
In ts_page_ram) in have data；Fec_in_ready signal represents that the raw column data of operation generation last time is from FEC row
Read in caching and FEC row caching, and be written into row fec in ram row input-buffer and col fec in ram respectively
In row input-buffer；
TX_RTP_PKT: start counting up, from ts_page_ram read data, simultaneously read row_fec_in_ram with
And the data in col_fec_in_ram, divide three tunnels, a road directly to enter the TS video stream data read from ts_page_ram
Enter pro_mpeg_frm_gen module and produce corresponding UDP bag or RTP bag, and be stored in frame_buf the 3rd caching.Other two
Road obtains FEC row packet after carrying out XOR with the raw column data in row_fec_in_ram and col_fec_in_ram respectively
And FEC column data bag difference correspondence write row_fec_out_ramFEC row cache and col_fec_out_ramFEC row
In caching.When counting down to the numerical value specified, enter NextState.
Wherein, if desired carry out FEC verification operation, then carry out subsequent operation, otherwise, read the UDP bag in the 3rd caching
Or RTP bag sends to network.
CHECK_RFEC: judge whether there is a need to the FEC row packet of transmission, if it did not, enter CHECK_CFEC；If
Have, then enter RFEC_WAIT_PKT_BUF.
RFEC_WAIT_PKT_BUF: judge whether buffer relief area below has space, if having, enters RFEC_RTP_
PKT。
RFEC_RTP_PKT: read the FEC row packet in row_fec_out_ram, and send into pro_mpeg_frm_
Gen module, produces row FEC bag, in write frame_buf, subsequent logic reads the row FEC bag in frame_buf and sends out
Deliver to network.Enter CHECK_CFEC.
CHECK_CFEC: judge whether there is a need to the FEC column data bag of transmission, if it did not, enter WAIT_PKT_BUF；
If having, then enter CFEC_WAIT_PKT_BUF.
CFEC_WAIT_PKT_BUF: judge whether buffer relief area below has space, if having, enters CFEC_RTP_
PKT。
CFEC_RTP_PKT: read the FEC column data bag in col_fec_out_ram, and send into pro_mpeg_frm_
Gen module, produces col FEC bag, in write frame_buf, subsequent logic reads the col FEC bag in frame_buf and sends out
Deliver to network.Enter WAIT_PKT_BUF.
WAIT_PKT_BUF: judge whether buffer relief area below has space, if having, returns to original state.
The invention provides a kind of multichannel TS video stream transmission method, it is possible to multichannel TS video flowing is stored respectively in caching
Multiple passages in, and whether storing TS video flowing in being checked each passage in turn by polling mechanism, if having, then this TS being regarded
Frequently stream carries out package operation, and is sent to network by the protocol data bag generated.Visible, the present invention is by using poll machine
System, it is achieved that the network transmission operation of management multichannel TS video flowing simultaneously, substantially increases the efficiency of transmission of TS video flowing.
Present invention also offers a kind of multichannel TS video stream transmission system, shown in Figure 2, Fig. 2 provides for the present invention
A kind of structural representation of multichannel TS video stream transmission system.This system includes:
Data cache module 11, for being stored respectively in multiple passages of the first caching by multichannel TS video flowing waiting for transmission
In；
Poll judge module 12, for using whether polling mechanism has stored TS video in judging the first passage cached
Stream, if it has, triggered protocol bag generation module 13；Otherwise, continue to judge next passage；
Protocol package generation module 13, for reading TS video flowing in passage, and uses default procotol to TS video
Stream carries out package operation and obtains protocol data bag；
Network sending module 14, for being sent to network in the way of unicast or multicast by protocol data bag, and triggers
Poll judge module 12 continues to judge next passage.
As preferably, this system also includes:
FEC verifies bag generation module, for generating FEC verification bag in real time according to TS video flowing；
Network sending module 14 is additionally operable to send to network FEC verification bag together with protocol data bag.
The invention provides a kind of multichannel TS video stream transmission system, it is possible to multichannel TS video flowing is stored respectively in caching
Multiple passages in, and whether storing TS video flowing in being checked each passage in turn by polling mechanism, if having, then this TS being regarded
Frequently stream carries out package operation, and is sent to network by the protocol data bag generated.Visible, the present invention is by using poll machine
System, it is achieved that the network transmission operation of management multichannel TS video flowing simultaneously, substantially increases the efficiency of transmission of TS video flowing.
It should be noted that in this manual, the relational terms of such as first and second or the like is used merely to one
Individual entity or operation separate with another entity or operating space, and not necessarily require or imply these entities or operate it
Between exist any this reality relation or order.And, term " includes ", " comprising " or its any other variant are intended to
Contain comprising of nonexcludability, so that include that the process of a series of key element, method, article or equipment not only include those
Key element, but also include other key elements being not expressly set out, or also include for this process, method, article or set
Standby intrinsic key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that
Other identical element is there is also in including the process of described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (8)
1. a multichannel TS video stream transmission method, it is characterised in that including:
Step s101: multichannel TS video flowing waiting for transmission is stored respectively in multiple passages of the first caching；
Step s102: use whether polling mechanism has stored TS video flowing, if it has, enter in judging the passage of described first caching
Enter step s103；Otherwise, continue to judge next passage；
Step s103: read described TS video flowing in described passage, and use default procotol that described TS video is flow to
The operation of row package obtains protocol data bag；
Step s104: sent in the way of unicast or multicast to network by described protocol data bag, after sending successfully, returns step
Rapid s102.
Method the most according to claim 1, it is characterised in that described in described passage, read described TS video flowing after
Also include:
FEC verification bag is generated in real time according to described TS video flowing；
Described FEC verification bag is sent to network together with described protocol data bag.
Method the most according to claim 2, it is characterised in that described according to described TS video flowing generate in real time FEC verification
Bag process particularly as follows:
Raw column data that have in advance in reading FEC row cache and FEC row caching respectively, that last time, operation generated, and by line number
According to writing line input-buffer, column data is write in row input-buffer；
Described TS video flowing is copied as two parts, and according to this and described column data carries out xor operation with described line number respectively, obtains
FEC row packet and FEC column data bag respectively correspondence are stored in described FEC row cache and described FEC row caching；Described
FEC row packet and described FEC column data bag are described FEC verification bag.
Method the most according to claim 3, it is characterised in that described FEC row cache is ram in slice, described FEC arranges caching
For off-chip DDR2.
Method the most according to claim 1, it is characterised in that the process of described step s101 particularly as follows:
Described multichannel TS video flowing waiting for transmission is respectively converted into the data stream of default size；
After sync byte 0x47 locks, data stream described in each road is stored respectively to each passage of described first caching.
Method the most according to claim 2, it is characterised in that described default procotol is specially udp protocol or RTP association
View.
7. a multichannel TS video stream transmission system, it is characterised in that including:
Data cache module, for being stored respectively in multichannel TS video flowing waiting for transmission in multiple passages of the first caching；
Poll judge module, for using whether polling mechanism has stored TS video flowing in judging the passage of described first caching,
If it has, triggered protocol bag generation module；Otherwise, continue to judge next passage；
Described protocol package generation module, for reading described TS video flowing in described passage, and uses default procotol pair
Described TS video flowing carries out package operation and obtains protocol data bag；
Network sending module, for being sent to network in the way of unicast or multicast by described protocol data bag, and triggers institute
State poll judge module to continue to judge next passage.
System the most according to claim 7, it is characterised in that also include:
FEC verifies bag generation module, for generating FEC verification bag in real time according to described TS video flowing；
Described network sending module is additionally operable to send to network described FEC verification bag together with described protocol data bag.
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| CN106330409B (en) | 2019-09-24 |
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