CN1780212A - Method and system for realizing network station encoder re-linking streaming media server - Google Patents
Method and system for realizing network station encoder re-linking streaming media server Download PDFInfo
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- CN1780212A CN1780212A CN 200410096288 CN200410096288A CN1780212A CN 1780212 A CN1780212 A CN 1780212A CN 200410096288 CN200410096288 CN 200410096288 CN 200410096288 A CN200410096288 A CN 200410096288A CN 1780212 A CN1780212 A CN 1780212A
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Abstract
A method for reconnecting the encoder of networked radio station with stream medium server includes such steps as judging if the encoder is connected with stream medium server, and encoding the digital signal stream of signal receiver by encoder and sending the encoded result to the steam medium server if it is, or calling the application interface function to connect stream medium server if it is not. Its system is composed of signal receiver, the encoder including timer, control logic unit and encoding unit, stream medium server and reproducer.
Description
Technical field
The present invention relates to stream media technology, relate in particular to a kind of implementation method and system of network station encoder re-linking streaming media server.
Background technology
Along with developing rapidly of the Internet (Internet), the stream media technology that comprises Microsoft's windows media (Media) technology is day by day ripe, make the user can utilize stream media technology to pass through Network Transmission audio frequency, video or multimedia file, realize long-distance education, video request program and network radio station etc.At present, radio station of thousands of family uses Windows Media technology that their broadcast singal is sent on the Internet, make the audience to listen to worldwide broadcasting at any time, no longer cause to listen to remote program of radio station because of penetrating of sender signal with transmittability by network.
Traditional broadcasting station sends broadcast signal streams to broadcast receiver by launching tower, by broadcast receiver broadcast program is played to the audience again; Network radio station then is that the broadcast signal streams with the broadcasting station is converted into digital signal streams, by computer network digital signal streams is played to the audience.Usually, it is the source that the audio file that network radio station is play to the audience or the broadcasted content in radio station are called, and utilizing different frequency range is different sources to the program of radio station of audience's broadcasting.As shown in Figure 1, network radio station mainly is made up of signal receiver, encoder, streaming media server and four parts of player.Wherein, signal receiver comprises radio reception head and computer sound card, the functional similarity of the function of radio reception head and broadcast receiver reception antenna is responsible for receiving the broadcast signal streams that comes from launching tower according to the frequency range of network radio station management maintenance personnel setting, and promptly each radio reception head receives the broadcasting of a frequency range; The analog broadcast signal stream translation that computer sound card then transmits the radio reception head becomes digital signal streams, sends the encoder that is positioned at same computer with this sound card again to.Encoder is the software module in the computer, as windows media encoder (Windows Media Encoder), its role is to: the digital signal streams that will come from sound card is encoded according to procotol, the signal format that the changing into stream medium server can be discerned; Streaming media server will send the player of network radio station through the digital signal streams of coding to again.The audience can be by installing and using the network radio station player to reach the purpose of listening to program of radio station on Internet.The network radio station player is a kind of client software that is installed in the computer, and the audience can realize opening network radio station by clicking function button on the player interface, select frequency range and close purpose such as network radio station.
Come broadcast listening in order to make the audience insert Internet, must guarantee that all parts can be communicated by letter smoothly among Fig. 1 by computer.When taking place that network between encoder and the streaming media server interrupts or streaming media server such as restarts at situation, encoder is owing to stopping to send data with streaming media server is out of touch.Provide broadcast service in order to continue as the audience this moment, and the management maintenance personnel of network radio station must the start-up by hand encoder, and it is rebulid and being connected of streaming media server.The shortcoming of being brought is like this: if encoder can't once be connected on the streaming media server, then must carry out repeatedly start-up by hand, till connecting.In addition, the management maintenance personnel of network radio station must monitor the situation that is connected of encoder and streaming media server constantly, so that in time finding to connect interrupts, and in time carry out craft and reconnect.Therefore adopt manual mode to realize network station encoder re-linking streaming media server, be not easy to administering and maintaining of network radio station.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of implementation method of network station encoder re-linking streaming media server, make network station encoder, can reconnect on the streaming media server automatically disconnecting under the situation about being connected with streaming media server.
For achieving the above object, the invention provides a kind of implementation method of network station encoder re-linking streaming media server, this method may further comprise the steps:
When A. the triggered time arrives, judge whether encoder is connected with streaming media server, if, execution in step B then, otherwise, calls application interface function, connection streaming media server;
B. encoder is to encode in the source with the digital signal streams of signal receiver, and coding result is sent to streaming media server.
Timer in the encoder sends triggering signal with a time interval that sets in advance, and the described triggered time is the time that receives the timer triggering signal.
Further be provided with and contain timer time configuration file at interval, and before carrying out described steps A, obtain this time interval, be notified to timer.
Describedly judge whether encoder and streaming media server are connected and be to realize by the return value of judging the Start function that pEncoder pointer in the IWMEncoder class is pointed.
The configuration file that contains the network radio station playlist further is set, and this network radio station playlist comprises inter cut time and this inter cut time corresponding inserting file at least, further comprises after judging encoder and streaming media server is connected in the described steps A:
Judge that the current time whether in inter cut time, if then encoder is to encode in the source with current time place inter cut time corresponding inserting file, and coding result is sent to streaming media server, directly finishes; Otherwise continue.
Described network radio station playlist further comprises reproduction time, described judged before whether the current time in inter cut time further comprise:
Judge that the current time is whether in reproduction time, if then continue; Otherwise encoder stops coding, directly finishes.
The described application program interface function of steps A is: windows media encoder applies routine interface function.
The present invention also provides a kind of system of network station encoder re-linking streaming media server, comprising:
Signal receiver, encoder, streaming media server and player,
Wherein, signal receiver is used for the broadcast signal streams of launching tower is converted into digital signal streams, sends encoder again to;
Encoder is used for according to procotol above-mentioned digital signal streams being encoded, the signal format that the changing into stream medium server can be discerned;
Streaming media server is used for the digital signal streams through coding is sent to the player of network radio station;
Described encoder comprises at least: timer, control logic unit and coding unit,
Timer is used for sending triggering signal according to certain time interval to the control logic unit;
After the control logic unit is used to receive triggering signal, keep being connected or interrupting the connection situation is sent control signal from the continuation coding to coding unit or the operation of startup encoder re-linking streaming media server according to encoder and streaming media server;
Coding unit receives the digital signal streams that comes from signal receiver under the control of control logic unit, behind coding, send to streaming media server.
Described encoder further comprises a memory cell, the configuration file that timer sends the time interval of triggering signal is closed in storage, be used for described control logic unit and obtain the described time interval, and be notified to described timer from the configuration file of memory cell.
The further stored record of described memory cell contains the configuration file of network radio station playing programs tabulation, be used for the control logic unit and obtain playlist from the configuration file of described memory cell, when encoder is connected with the maintenance of streaming media server, switches the source of coding or stop coding according to playlist content decision coding unit.
Described encoder further comprises a memory cell, storage contains the configuration file of network radio station playing programs tabulation, be used for the control logic unit and obtain playlist from the configuration file of the memory cell that contains network radio station playing programs tabulation, when encoder is connected with the maintenance of streaming media server, switches the source of coding or stop coding according to playlist content decision coding unit.
Use the present invention, when network station encoder interrupted with being connected of streaming media server, encoder started the operation of re-linking streaming media server automatically.Particularly, the present invention has following beneficial effect:
1. the present invention has increased the control unit that comprises timer, control logic unit and configuration file on existing network station encoder basis, whether make network station encoder can detect automatically with being connected of streaming media server disconnects, and when disconnecting, reconnect automatically by control unit, Unsupervised attendant comes re-linking streaming media server by manually booting encoder, reduce the degree of artificial participation, improved network radio station management and the convenience of safeguarding.
2. among the present invention, the control logic unit is only receiving the triggering signal that timer sends, just detect the situation that is connected of network station encoder and streaming media server, and sending the time interval of triggering signal, timer can artificially control, therefore be convenient to network radio station management maintenance personnel according to actual needs, the frequency that detects and reconnect is controlled network condition.
Description of drawings
Fig. 1 is the structure chart of network radio station.
Fig. 2 is the flow chart of network station encoder re-linking streaming media server implementation method of the present invention.
Fig. 3 is the flow chart of network radio station re-linking streaming media server of the present invention and inter-cut speech document method.
Fig. 4 is for realizing the structure chart of the employed encoder of network station encoder re-linking streaming media server according to the present invention.
Fig. 5 is the structure chart of encoder in the system that realizes network radio station re-linking streaming media server and inter-cut speech document according to the present invention.
Embodiment
For making purpose of the present invention, technical scheme clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
The present invention is a kind of implementation method of network station encoder re-linking streaming media server, its basic thought is: increase control logic unit and timer in network station encoder, when encoder is connected with streaming media server, coding unit in the encoder is to encode in the source with the digital signal streams of signal receiver, and coding result is sent to streaming media server; When encoder disconnected with being connected of streaming media server, the control logic unit called application programming interfaces (API) function that Windows MediaEncoder provides repeatedly according to certain time interval, automatically re-linking streaming media server.
In order to reach the purpose of the automatic re-linking streaming media server of network station encoder, the present invention can increase timer, control logic unit and configuration file in existing network station encoder.Wherein, timer sends triggering signal to the control logic unit at a certain time interval, and notice control logic unit has arrived the triggered time; The control logic unit check whether encoder is connected with streaming media server, and whether decision reconnects operation after receiving triggering signal; And the effect of configuration file is: personnel write the time interval that timer sends triggering signal in advance for the network radio station management maintenance.Like this, the network station encoder after the present invention improves had both had the function that the digital signal streams that comes from sound card is encoded, and can realize the function of encoder re-linking to streaming media server again.Below realize the preferred embodiment of network station encoder re-linking streaming media server for the present invention:
In the present embodiment, the control logic unit obtains from configuration file the time interval that timer sends triggering signal in advance, and this time interval is notified to timer, timer sends triggering signal according to this time interval then, triggers the control logic unit and continues to carry out flow process shown in Figure 2.
As shown in Figure 2, after the control logic unit received triggering signal that timer sends, determines to arrive the triggered time, the implementation method of present embodiment network station encoder re-linking streaming media server may further comprise the steps:
Whether step 201. control logic unit judges encoder is connected to streaming media server, if then execution in step 202; Otherwise, execution in step 203.
Under the situation that has received the triggering signal that timer sent, the control logic unit judges in this step whether encoder has been connected on the streaming media server.Particularly, encoder is attempted connecting with streaming media server by the application program interface function of calling Windows Media Encoder and providing, as: pEncoder pointer Start function pointed in the IWMEncoder class, connecting normal and be connected under the situation of interruption, the return value of this application program interface function is different, therefore whether the return value of calls application interface function is the return value of representative successful connection by judging in this step in the control logic unit, can know whether encoder is connected on the streaming media server.
Under the situation that encoder and streaming media server connect, encoder is encoded to the current digital signal streams that comes from signal receiver in this step, is about to current source and is converted into the digital signal streams that streaming media server can be discerned; On the streaming media server that digital signal streams sends to encoder is connected after will changing then.
If encoder is being encoded and is being sent in the process of coding result, the control logic unit has received the triggering signal that timer sends, then encoder interrupts the work of ongoing coding and transmission coding result, by the be connected situation of the detection of the control logic unit in encoder encoder with streaming media server; If the control logic unit of encoder does not receive the triggering signal that timer sends, then proceed to encode and send the work of coding result to streaming media server.
In being connected under the situation of interrupting of encoder and streaming media server, the control logic unit starts the operation that connects streaming media server automatically, promptly, attempt connecting with streaming media server by calling the application program interface function that Windows Media Encoder provides.As: pEncoder pointer Start function pointed in the IWMEncoder class, this function can connect according to the network address and the streaming media server of opposite end.
To the flow process of step 203, encoder can carry out work according to interrupt mode in above-mentioned steps 201.Particularly, after the control logic unit in the encoder receives the triggering signal that timer sends, carry out the interrupt spot protection immediately, i.e. the current various running parameters of record storage are as coding site and coding result etc.Then, encoder stops current work, then judges the connection state of encoder and streaming media server.
Further, use improved network station encoder in the present embodiment, in configuration file, write playlist in advance or set in advance a configuration file that comprises playlist, the control logic unit is under the situation that encoder and streaming media server keep being connected, according to the source that the content of playlist is switched encoder, then can also realize the function of inter-cut speech document of network transceiver.
In order to realize the purpose of inter-cut speech document of network transceiver, the playlist that the present invention is write in configuration file comprises playitems playitem, reproduction time, inter cut time and intercuts file.In the reproduction time outside removing inter cut time, encoder is encoded to the digital signal streams of signal receiver; In inter cut time, encoder switches to the corresponding inserting file, and to intercut file with this be to encode in the source; Do not have inter cut time if only write reproduction time in the playitems playitem of configuration file and intercut file, then the presentation code device is only encoded to the digital signal streams of signal receiver in this section reproduction time, and does not intercut.Playlist as shown in table 1 co-exists in three playitems playitem, wherein distinguishes inter-cut speech document 1 and voice document 2 in playitems playitem 1 and the playitems playitem 2, and does not intercut in playitems playitem 3.
| Playitems playitem | Reproduction time | Inter cut time | Intercut file |
| 1 | 12:30～14:00 | 13:10～13:20 | Voice document 1 |
| 2 | 15:30～17:30 | 16:30～16:50 | Voice document 2 |
| 3 | 19:00～22:00 |
Table 1
Because in the practical application of network radio station, the demand of encoder re-linking streaming media server and inter-cut speech document all exists, therefore the method for encoder re-linking streaming media server of the present invention and the method for inter-cut speech document can be used in combination.To the method for network station encoder re-linking streaming media server and inter-cut speech document be described in detail below:
Because the management maintenance personnel of network radio station send timer the time interval and the playlist of triggering signal in advance and have write in the configuration file, therefore when realizing reconnecting and intercutting, the control logic unit of encoder obtains above-mentioned information from configuration file, and will be written in the timer in the time interval, so that timer determines to send the frequency of triggering signal and the encoder coding source at different time.Then, timer sends triggering signal according to the above-mentioned time interval, and notice control logic unit arrives the triggered time, and triggers the control logic unit and continue to carry out flow process shown in Figure 3.
As shown in Figure 3, after the control logic unit receives triggering signal that timer sends, determines to arrive the triggered time, realize that the method for network station encoder re-linking streaming media server and inter-cut speech document may further comprise the steps:
Whether step 301～302. control logic unit judges encoders are connected on the streaming media server, if then execution in step 303; Otherwise control logic cell call control logic cell call Windows Media Encoder application program interface function connects streaming media server, finishes present embodiment then and reconnects and intercut flow process.
In being connected under the situation of interrupting of encoder and streaming media server, the control logic unit starts the operation that connects streaming media server automatically, promptly, attempt connecting with streaming media server by calling the application program interface function that Windows Media Encoder provides.As: call that pEncoder pointer Start function and streaming media server pointed connects in the IWMEncoder class.
Whether step 303～304. control logic unit judges current time are in reproduction time, if then execution in step 305; Otherwise encoder stops coding, finishes the flow process that present embodiment reconnects and intercuts then.
The control logic part is judged according to the content of playlist in current time and the configuration file, determines whether encoder should stop coding.If the current time, in the reproduction time that configuration file is provided with, encoder not need not code conversion is carried out in any source, so encoder stops encoding operation, and finishes the flow process that originally reconnects and intercut.
Whether step 305～307. control logic unit judges current time are in inter cut time, if, then encoder is to encode in the source with the corresponding inserting file, then coding result is sent to streaming media server, and finishes the flow process that present embodiment reconnects and intercuts; Otherwise encoder is to encode in the source with the digital signal streams of signal receiving unit, then coding result is sent to streaming media server, finishes the flow process that present embodiment reconnects and intercuts then.
At encoder is that encode in the source, the co-current flow media server sends in the process of coding result with current time corresponding inserting file; if received the triggering signal that timer sends; then the control logic unit carries out the interrupt spot protection immediately; the current various running parameters of i.e. record storage are as source, coding site and coding result etc.Then, encoder stops current work, then judges the connection state of encoder and streaming media server; If do not receive the timer triggering signal, then the encoder continuation is to encode in the source with current time corresponding inserting file, and gives streaming media server with coding result.
Equally, at encoder is that encode in the source, the co-current flow media server sends in the process of coding result with the digital signal streams of signal receiver, if received the triggering signal that timer sends, after then the control logic unit carried out the terminal scene protection, encoder stopped current work; If do not receive the triggering signal of timer, then the encoder continuation is to encode in the source with the digital signal streams of signal receiver, and gives streaming media server with coding result.
Above-mentioned for using the preferred embodiment that method of the present invention realizes network radio station re-linking streaming media server and realization network radio station re-linking streaming media server and inter-cut speech document, will be described in detail realizing system used in the present invention below.
The present invention uses system shown in Figure 1 to realize network station encoder re-linking streaming media server, and this system comprises signal receiver, encoder, server and four parts of player.Wherein, signal receiver is converted into digital signal streams with the broadcast signal streams of launching tower, sends encoder again to.Encoder is encoded to above-mentioned digital signal streams according to procotol, the signal format that the changing into stream medium server can be discerned; Streaming media server will send the player of network radio station through the digital signal streams of recompile to again.
As shown in Figure 4, the present invention has increased control logic unit, timer and memory cell in network station encoder shown in Figure 1.Timer sends triggering signal to the control logic unit at a certain time interval; The control logic unit check whether encoder is connected with streaming media server, and whether decision reconnects operation after receiving triggering signal; And the effect of memory cell is: the configuration file that storage networking station management attendant sets in advance comprises the time interval that timer sends triggering signal in this configuration file.Encoder after the improvement is when work, and the control logic unit obtains the time interval that timer sends triggering signal from the configuration file of memory cell, and this time interval is notified to timer; Timer sends triggering signal according to the above-mentioned time interval to the control logic unit; After the control logic unit receives triggering signal, detect the situation that is connected of encoder and streaming media server, if the interruption that is connected of encoder and streaming media server, then notice coding unit in control logic unit stops to encode and starts the operation that connects streaming media server automatically, if encoder is in the state that is connected with streaming media server, then notice coding unit in control logic unit continues the digital signal streams that comes from signal receiver is encoded, and coding result is sent to streaming media server.
Further, the present invention is on the basis of encoder shown in Figure 4, in the configuration file of memory cell, increase the playlist of network radio station program or in memory cell, increase the configuration file that another one is closed the tabulation of network radio station playing programs, thereby obtain encoder shown in Figure 5, realize the purpose of network station encoder re-linking streaming media server and inter-cut speech document.
Encoder among Fig. 5 is when work, and the control logic unit obtains the time interval and the playlist that timer sends triggering signal from the configuration file of memory cell, and this time interval is notified to timer; Timer sends triggering signal according to the above-mentioned time interval to the control logic unit; After the control logic unit receives triggering signal, detect the situation that is connected of encoder and streaming media server, if the interruption that is connected of encoder and streaming media server, then the control logic unit will be notified coding unit to stop to encode and start the operation that connects streaming media server automatically; If encoder is in the state that is connected with streaming media server, then the control logic unit is according to the current source of content decision coding unit of playlist, coding unit is encoded according to the indication of control logic unit, then coding result is sent to streaming media server.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being made, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of implementation method of network station encoder re-linking streaming media server is characterized in that, this method may further comprise the steps:
When A. the triggered time arrives, judge whether encoder is connected with streaming media server, if, execution in step B then, otherwise, calls application interface function, connection streaming media server;
B. encoder is to encode in the source with the digital signal streams of signal receiver, and coding result is sent to streaming media server.
2, the method for claim 1 is characterized in that, the timer in the encoder sends triggering signal with a time interval that sets in advance, and the described triggered time is the time that receives the timer triggering signal.
3, method as claimed in claim 2 is characterized in that further comprising, is provided with to contain timer time configuration file at interval, and obtains this time interval before execution in step A, is notified to timer.
4, the method for claim 1 is characterized in that, the described return value of judging whether encoder and streaming media server are connected by the Start function pointed of pEncoder pointer in the judgement IWMEncoder class realizes.
5, the method for claim 1, it is characterized in that further comprising, setting contains the configuration file of network radio station playlist, this network radio station playlist comprises inter cut time and this inter cut time corresponding inserting file at least, further comprises after determining encoder and streaming media server is connected in the described steps A:
Judge that the current time whether in inter cut time, if then encoder is to encode in the source with current time place inter cut time corresponding inserting file, and coding result is sent to streaming media server, directly finishes; Otherwise continue execution in step B.
6, method as claimed in claim 5 is characterized in that, described network radio station playlist further comprises reproduction time, described judged before whether the current time in inter cut time further comprise:
Judge the current time whether in reproduction time, if continue then to judge that the current time is whether in inter cut time; Otherwise encoder stops coding, directly finishes.
7, the method for claim 1 is characterized in that, the described application program interface function of steps A is: windows media encoder applies routine interface function.
8, a kind of system of network station encoder re-linking streaming media server comprises:
Signal receiver, encoder, streaming media server and player,
Wherein, signal receiver is used for the broadcast signal streams of launching tower is converted into digital signal streams, sends encoder again to;
Encoder is used for according to procotol above-mentioned digital signal streams being encoded, the signal format that the changing into stream medium server can be discerned;
Streaming media server is used for the digital signal streams through coding is sent to the player of network radio station;
It is characterized in that described encoder comprises at least: timer, control logic unit and coding unit,
Timer is used for sending triggering signal according to certain time interval to the control logic unit;
After the control logic unit is used to receive triggering signal, keep the situation that is connected or interrupts connecting, send to coding unit and continue the control signal or the startup encoder re-linking streaming media server of encoding according to encoder and streaming media server;
Coding unit receives the digital signal streams that comes from signal receiver under the control of control logic unit, behind coding, send to streaming media server.
9, system as claimed in claim 8, it is characterized in that, described encoder further comprises a memory cell, storage contains the configuration file that timer sends the time interval of triggering signal, be used for described control logic unit and obtain the described time interval, and be notified to described timer from the configuration file of memory cell.
10, system as claimed in claim 9, it is characterized in that, the further stored record of described memory cell contains the configuration file of network radio station playing programs tabulation, be used for the control logic unit and obtain playlist from the configuration file of described memory cell, when encoder is connected with the maintenance of streaming media server, switches the source of coding or stop coding according to playlist content decision coding unit.
11, system as claimed in claim 9, it is characterized in that, described encoder further comprises a memory cell, storage contains the configuration file of network radio station playing programs tabulation, be used for the control logic unit and obtain playlist from the configuration file of the memory cell that contains network radio station playing programs tabulation, when encoder is connected with the maintenance of streaming media server, switches the source of coding or stop coding according to playlist content decision coding unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102948250A (en) * | 2010-05-17 | 2013-02-27 | 株式会社电装 | Short-range wireless communication apparatus |
| CN110557272A (en) * | 2018-06-04 | 2019-12-10 | 杭州海康威视数字技术股份有限公司 | data stream transmission method and device, computer readable storage medium and server |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030023973A1 (en) * | 2001-03-22 | 2003-01-30 | Brian Monson | Live on-line advertisement insertion object oriented system and method |
| US8028092B2 (en) * | 2002-06-28 | 2011-09-27 | Aol Inc. | Inserting advertising content |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102948250A (en) * | 2010-05-17 | 2013-02-27 | 株式会社电装 | Short-range wireless communication apparatus |
| CN102948250B (en) * | 2010-05-17 | 2015-11-25 | 株式会社电装 | Short-range wireless communication means |
| CN110557272A (en) * | 2018-06-04 | 2019-12-10 | 杭州海康威视数字技术股份有限公司 | data stream transmission method and device, computer readable storage medium and server |
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