CN101252600A - Method, system and equipment of stream medium order program - Google Patents
Method, system and equipment of stream medium order program Download PDFInfo
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- CN101252600A CN101252600A CNA2008100665298A CN200810066529A CN101252600A CN 101252600 A CN101252600 A CN 101252600A CN A2008100665298 A CNA2008100665298 A CN A2008100665298A CN 200810066529 A CN200810066529 A CN 200810066529A CN 101252600 A CN101252600 A CN 101252600A
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Abstract
The invention is applicable to the stream media on-demand field, providing a stream media on-demand method, the system and the apparatus thereof. The method includes the following steps: receiving the on-demand orders given by a local stream media player to play stream media programs; requesting the download of the corresponding stream media data from a stream media data source; buffering the stream media data loaded from the stream media data source; analyzing the buffered stream media data; packaging the analyzed and outputted stream media data into the data format required by the on-demand protocol type set by the local stream media player and transmitting the data format to the stream media player. The invention reduces the communication pressure of the stream media on-demand player, improves the efficiency of obtaining stream media data by better utilizing the Peer-to-Peer technology, increases the data sources providing on-demand service to clients and greatly improves the extensibility of the stream media on-demand service.
Description
Technical field
The invention belongs to the streaming media on demand field, relate in particular to a kind of stream media ordering method, system and equipment.
Background technology
The streaming media on demand service is a kind of service that streaming media on demand is provided on the internet, generally is used for application such as entertainment video program request, remote teaching.The streaming media on demand service is by stream medium data streaming (Real TimeStreaming Protocol, RTSP) agreement, Microsoft Media Server agreement (Microsoft Media ServerProtocol, MMS), perhaps the HTTP streaming protocol connects the DST PLAYER that sends to client with stream medium data by network and plays.
The streaming media on demand service is generally by setting up the streaming media on demand server, flow-medium performance is placed on the streaming media on demand server, during certain flow-medium performance of client program request, be connected to the streaming media on demand server by network, the mutual and streaming media data transmission of the protocol command of between the streaming media on demand server and client side, finishing by certain streaming media on demand agreement.
Under existing server/customer end pattern, the streaming media on demand server is resolved stream medium data in the flow-medium performance, and stream medium data is packaged into the form that client player can be play, and sends to client.Simultaneously, because order program service is a streaming media service with interactivity, the user can begin, suspend, continue to play, stop any one flow-medium performance at any time, can also navigate to any one position at any time and begin to play among the process of playing.Each operation of client all will be carried out alternately with the streaming media on demand server, and the streaming media on demand server need be finished these interaction protocols, with fluency and the interactivity that guarantees that the client flow-medium performance is play.
When the flow-medium performance on the client program request the Internet, client player is according to the network address of flow-medium performance, initiate to connect to the streaming media on demand server at flow-medium performance place, and it is mutual to carry out protocol command according to the protocol type of appointment in the network address and streaming media on demand server, finishes the broadcast of stream medium data.The streaming media on demand server need finish on the one hand and the client DST PLAYER between protocol command mutual, need on the other hand stream medium data is packaged into the form that player can be play, and be transferred to DST PLAYER.
In the existing scheme, because the streaming media on demand server had both been born the role of data source of stream media, finish again that protocol command is mutual, stream medium data encapsulation and transmission work, reduced the extensibility of streaming media on demand service, less as the streaming media on demand server of data source of stream media on the one hand, be difficult to satisfy client's streaming media on demand demand, on the other hand when the client of program request increases, cause the communication pressure of streaming media on demand server excessive, performance reduces, and influences the quality of streaming media on demand service.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of stream media ordering method, be intended to solve in the existing streaming media on demand scheme, the streaming media on demand server bears simultaneously that data source of stream media, protocol command are mutual, stream medium data encapsulation and transmission work, has reduced the problem of the extensibility of streaming media on demand service.
The embodiment of the invention is achieved in that a kind of stream media ordering method, and described method comprises the steps:
Receive the program request order of the beginning playing stream media program that local DST PLAYER sends;
Download corresponding stream medium data to the data source of stream media request;
The stream medium data that buffer memory is downloaded from data source of stream media;
Resolve the stream medium data of buffer memory;
The stream medium data of resolving output is packaged into the data format that program request protocol type that local DST PLAYER sets needs, sends to local DST PLAYER.
Another purpose of the embodiment of the invention is to provide a kind of demand stream media system, and described system comprises:
The data download unit is used for downloading corresponding stream medium data according to the program request order to the data source of stream media request;
Data buffer storage unit is used for the stream medium data that buffer memory is downloaded from data source of stream media;
The data parsing unit is used to resolve the stream medium data of buffer memory;
Data transmission unit is used for resolving the data format that the stream medium data of exporting is packaged into the program request protocol type needs of local DST PLAYER setting, sends to local DST PLAYER;
Program request protocol command interactive unit is used for that to carry out protocol command mutual with local DST PLAYER, according to the program request order that local DST PLAYER sends the data of described data download unit is downloaded, and perhaps the transfer of data of data transmission unit is controlled.
Another purpose of the embodiment of the invention is to provide a kind of DST PLAYER that comprises above-mentioned demand stream media system.
Another purpose of the embodiment of the invention is to provide a kind of communication terminal that comprises above-mentioned demand stream media system.
The embodiment of the invention is with streaming media on demand service localization, the protocol command of finishing streaming media playing at client terminal local is mutual, and the encapsulation of stream medium data and transmission, significantly reduced the streaming media on demand load of server, reduced the communication pressure of streaming media on demand server.Simultaneously, make the streaming media on demand server can be merely as a data source of stream media, more good utilisation peer-to-peer network technology improves the efficient of obtaining stream medium data, and increased the data source that order program service is provided for client, improved the extensibility of streaming media on demand service greatly.
Description of drawings
Fig. 1 is the realization flow figure of the playing stream media program that provides of the embodiment of the invention;
Fig. 2 is the realization flow figure of the time-out playing stream media program that provides of the embodiment of the invention;
Fig. 3 is the realization flow figure that the flow-medium performance that suspends is play in the continuation that provides of the embodiment of the invention;
Fig. 4 is the realization flow figure of the location reposition playing stream media program that provides of the embodiment of the invention;
Fig. 5 is the realization flow figure that stops the playing stream media program that the embodiment of the invention provides;
Fig. 6 is the structure chart of the demand stream media system that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention,, finish the mutual of DST PLAYER program request agreement at client terminal local with streaming media on demand service localization, and the encapsulated delivery of media data, the extensibility of streaming media on demand service can be improved greatly.
The stream medium data program request has higher interactivity, the user is in the process of playing stream media program, can begin at any time, suspend, continue to play, stop any one flow-medium performance, can also in the process of playing stream media program, navigate to the optional position and play.
In embodiments of the present invention, because with streaming media on demand service localization, so during system initialization with virtual server address, this machine address of client as local DST PLAYER, the port numbers binding of selecting a system to be provided with, and monitor connection on this port.When new flow-medium performance of local DST PLAYER broadcast, when perhaps the flow-medium performance of playing being controlled, local DST PLAYER is initiated a connection to this port, and initiates the program request order according to the program request protocol type of setting to client.
Fig. 1 shows the realization flow of the playing stream media program that the embodiment of the invention provides, and details are as follows:
In step S101, receive the program request order of the playing stream media program that local DST PLAYER sends;
In step S102, to data source of stream media, streaming media on demand server or provide other network node request that stream medium data downloads and the stream medium data of download client program request for example;
In step S103, the stream medium data that buffer memory is downloaded from data source of stream media;
In step S104, resolve the stream medium data of buffer memory;
In embodiments of the present invention, if the stream medium data of resolving is the header data of Streaming Media, can therefrom parse essential information of the size that comprises stream medium data, time span, stream medium data etc., if the Streaming Media frame data, can parse the information such as transmitting time stamp of these Streaming Media frame data;
In step S105, return the response order of playing current flow-medium performance to local DST PLAYER according to the stream medium data information of resolving output;
In step S106, will resolve the stream medium data of output, the essential information of stream medium data for example, perhaps Streaming Media frame data are packaged into the data format that program request protocol type that local DST PLAYER sets needs, and send to local DST PLAYER.
Fig. 2 shows the realization flow of the time-out playing stream media program that the embodiment of the invention provides, and details are as follows:
In step S201, receive the program request order that time-out that local DST PLAYER sends is play current flow-medium performance;
In step S202, stop to send stream medium data the send state information of stream medium data when recording played is suspended, for example time point information of stream medium data transmission, the sequence number of wrapper etc. to local DST PLAYER;
In step S203, stop from data source of stream media download stream media data the download status information of stream medium data when recording played is suspended, for example time point information of stream medium data download;
In step S204, the program request protocol type of setting according to local DST PLAYER returns the response order that suspends the current flow-medium performance of broadcast to local DST PLAYER.
The realization flow of the flow-medium performance that suspends is play in the continuation that Fig. 3 shows the embodiment of the invention to be provided, and details are as follows:
In step S301, receive the program request order that the current flow-medium performance that is suspended is play in continuation that local DST PLAYER sends;
In step S302, the download status information of the stream medium data of record during according to time-out is downloaded the stream medium data that continues broadcast to the data source of stream media request;
In step S303, the stream medium data that buffer memory is downloaded from data source of stream media;
In step S304, resolve the stream medium data of buffer memory;
In step S305, the program request protocol type of setting according to local DST PLAYER returns the response order that continues to play current flow-medium performance to local DST PLAYER;
In step S306, the stream medium data of resolving output is packaged into the data format of the program request protocol type needs of local DST PLAYER setting, the send state information of the stream medium data of record during according to time-out continues to send stream medium data to local DST PLAYER.
Fig. 4 shows the realization flow of the location reposition playing stream media program that the embodiment of the invention provides, and details are as follows:
In step S401, receive the program request order that location reposition that local DST PLAYER sends is play current flow-medium performance;
In step S402, stop the transmission of current stream medium data;
In step S403, from the reposition of location, to data source of stream media request download stream media data;
In step S404, the stream medium data that buffer memory is downloaded from data source of stream media;
In step S405, resolve the stream medium data of buffer memory;
In step S406, the response order that the program request protocol type of setting according to local DST PLAYER is play current flow-medium performance to local DST PLAYER restoring to normal position reposition;
In step S407, the stream medium data of resolving output is packaged into the data format that program request protocol type that local DST PLAYER sets needs, from the reposition of location, send stream medium data to local DST PLAYER.
Fig. 5 shows the realization flow that stops the playing stream media program that the embodiment of the invention provides, and details are as follows:
In step S501, receive the program request order that stops to play current flow-medium performance that local DST PLAYER sends;
In step S502, stop to send stream medium data to local DST PLAYER;
In step S503, stop from data source of stream media download stream media data;
In step S504, the program request protocol type of setting according to player returns the response order that stops to play current flow-medium performance to local DST PLAYER.
Need to prove that in above-mentioned each flow process, respond order generally by program request agreement regulation to the correspondence that local DST PLAYER returns, different program request agreements have different ordering norms.Certainly when the program request agreement does not require, also can not return and respond order to local DST PLAYER.In addition, when local DST PLAYER sends stream medium data, can also control the data rate that sends to local DST PLAYER.
Fig. 6 shows the structure of the demand stream media system that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
This system is for running on personal computer (Personal Computer, PC), mobile phone, personal digital assistant (Personal Digital Assistant, PDA) etc. as one of the communication terminal of client system independently, can be used as plug-in unit or independently process provide service to the DST PLAYER of client.
The streaming media data cache that data buffer storage unit 62 is downloaded data download unit 61 is in client.
The stream medium data of buffer memory is resolved in data parsing unit 63, parse the essential information of stream medium data, if the header data of medium, data parsing unit 63 can therefrom parse and comprise Streaming Media size, time span, the essential information of audio/video flow etc., if the media frame data, can parse the information such as transmitting time stamp of these media frame data.
The data format that the stream medium data that data transmission unit 64 is resolved output with data parsing unit 63 is packaged into the program request protocol type needs of player setting sends to local DST PLAYER, in addition, data transmission unit 64 can also be controlled the data rate that sends to local DST PLAYER.
It is mutual to carry out protocol command between program request protocol interaction unit 65 and the local DST PLAYER, according to the program request order that local DST PLAYER sends the transfer of data of data transmission unit 64 and the data download of data download unit 61 are controlled, and returned to local DST PLAYER according to the corresponding response order of stream media information structure that resolve data parsing unit 63.
In embodiments of the present invention, because with streaming media on demand service localization, so during system initialization, with virtual server address, this machine address of client as local DST PLAYER, the port numbers that program request protocol interaction unit 65 selects a system to be provided with is bound, and monitors the connection on this port.When local DST PLAYER is play a new flow-medium performance, when perhaps the flow-medium performance of playing being controlled, local DST PLAYER is initiated a connection to this port, and initiates corresponding program request order according to the program request protocol type of setting to client.
When the new flow-medium performance of one of user's program request, local DST PLAYER sends the program request order of playing stream media program to client.After program request protocol interaction unit 65 receives the program request order of the playing stream media program that local DST PLAYER sends, notification data download unit 61 download stream media datas.Data download unit 61 is to the data source of stream media request and download corresponding stream medium data.Data download unit 61 leaves the stream medium data of downloading in the data buffer storage unit 62 in.Data parsing unit 63 reads the also stream medium data of resolution data buffer unit 62 buffer memorys.The media information that output is resolved according to data parsing unit 63 in program request protocol interaction unit 65 is constructed the response order of playing current flow-medium performance, sends to local DST PLAYER.The stream medium data that data transmission unit 64 is resolved output with data parsing unit 63 is packaged into the needed stream medium data form of program request protocol type that local DST PLAYER is set, and sends to local DST PLAYER.
When the user suspended the flow-medium performance of program request, local DST PLAYER sent to client and suspends the program request order of playing current flow-medium performance.After program request protocol interaction unit 65 receives that time-out that local DST PLAYER sends is play the program request order of current flow-medium performance, notification data transmission unit 64 stops to send stream medium data to local DST PLAYER, the send state information of stream medium data when data transmission unit 64 recording played are suspended, the time point information when for example suspending, the sequence number of wrapper etc.Simultaneously, program request protocol interaction unit 65 notification data download units 61 stop from data source of stream media download stream media data, the download status information of stream medium data when data download unit 61 recording played are suspended, for example time point information downloaded of data etc.The program request protocol type that program request protocol interaction unit 65 is set according to local DST PLAYER returns to local DST PLAYER and suspends the response order of playing current flow-medium performance.
When the user play a flow-medium performance that is in time-out, local DST PLAYER sent the program request order that continues to play the current flow-medium performance that is suspended to client.After program request protocol command interactive unit 65 receives that the program request order of the current flow-medium performance that is suspended is play in continuation that local DST PLAYER sends, notification data transmission unit 64, data download unit 61 is according to the download status information of playing the stream medium data that writes down when suspending, download the stream medium data that continues broadcast to the data source of stream media request, the stream medium data of downloading is left in the data buffer storage unit 62.Data parsing unit 63 reads the also stream medium data of resolution data buffer unit 62 buffer memorys.The program request protocol type that program request protocol interaction unit 65 is set according to local DST PLAYER returns the response order that continues to play current flow-medium performance to local DST PLAYER, data transmission unit 64 will be resolved the data format that the stream medium data of exporting is packaged into the program request protocol type needs of local DST PLAYER setting, the send state information of the stream medium data of record during according to time-out continues to send stream medium data to local DST PLAYER.
When the user when playing process navigates to reposition playing stream media program, local DST PLAYER sends the program request order that the location reposition is play current flow-medium performance to client.After program request protocol interaction unit 65 receives that location reposition that local DST PLAYER sends is play the program request order of current flow-medium performance, notification data transmission unit 64 stops the transmission of current stream medium data, notification data download unit 61 begins to data source of stream media request download stream media data from the reposition of location simultaneously, and data download unit 61 leaves the stream medium data of downloading in the data buffer storage unit 62 in.Data parsing unit 63 reads the also stream medium data of resolution data buffer unit 62 buffer memorys.The response order that the program request protocol type that program request protocol command interactive unit 65 is set according to local DST PLAYER is play current flow-medium performance to local DST PLAYER restoring to normal position reposition.The stream medium data that data transmission unit 64 will be resolved output is packaged into the data format that program request protocol type that local DST PLAYER sets needs, and from the reposition of location, sends stream medium data to local DST PLAYER.
When the user stopped the broadcast of a flow-medium performance, local DST PLAYER sent the program request order that stops to play current flow-medium performance to client.Program request protocol interaction unit 65 receives that local DST PLAYER sends stop to play the program request order of current flow-medium performance after, notification data transmission unit 64 stops to send stream medium data to local DST PLAYER, and notification data download unit 61 stops from data source of stream media download stream media data.The program request protocol type that program request protocol interaction unit 65 is set according to player returns the response order that stops to play current flow-medium performance to local DST PLAYER.
As one embodiment of the present of invention, above-mentioned demand stream media system also can be integrated in and form a complete system in the DST PLAYER, with virtual server address, this machine address of client as DST PLAYER, the port numbers that DST PLAYER selects a system to be provided with is bound, and monitors the connection on this port.When playing a new flow-medium performance, when perhaps the flow-medium performance of playing being controlled, DST PLAYER is initiated a connection to this port, download stream media data on the data source of stream media, the protocol command of finishing streaming media playing in this locality is mutual, and the encapsulation of stream medium data and transmission etc.
The embodiment of the invention is with streaming media on demand service localization, the protocol command of finishing streaming media playing at client terminal local is mutual, and the encapsulation of stream medium data and transmission, significantly reduced the streaming media on demand load of server, reduced the communication pressure of streaming media on demand server.Simultaneously, make the streaming media on demand server can be merely as a data source of stream media, there is not difference and have this stream medium data network node with other, good utilisation peer-to-peer network technology so more, improve the efficient of obtaining stream medium data, and increased the data source that order program service is provided for client, improved the extensibility of streaming media on demand service greatly.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of stream media ordering method is characterized in that, described method comprises the steps:
Receive the program request order of the playing stream media program that local DST PLAYER sends;
Download corresponding stream medium data to the data source of stream media request;
The stream medium data that buffer memory is downloaded from data source of stream media;
Resolve the stream medium data of buffer memory;
The stream medium data of resolving output is packaged into the data format that program request protocol type that local DST PLAYER sets needs, sends to local DST PLAYER.
2, the method for claim 1 is characterized in that, described method further comprises the steps:
Receive the program request order that time-out that local DST PLAYER sends is play current flow-medium performance;
Stop to send stream medium data the send state information of stream medium data when recording played is suspended to local DST PLAYER;
Stop from data source of stream media download stream media data the download status information of stream medium data when recording played is suspended.
3, method as claimed in claim 2 is characterized in that, described method further comprises the steps:
Receive the program request order that the current flow-medium performance that is suspended is play in continuation that local DST PLAYER sends;
The download status information of the stream medium data of record during according to time-out is downloaded the stream medium data that continues broadcast to the data source of stream media request;
The stream medium data that buffer memory is downloaded from data source of stream media;
Resolve the stream medium data of buffer memory;
The stream medium data of resolving output is packaged into the data format of the program request protocol type needs of local DST PLAYER setting, according to the send state information of playing the stream medium data that writes down when suspending, continue to send stream medium data to local DST PLAYER.
4, the method for claim 1 is characterized in that, described method further comprises the steps:
Receive the program request order that location reposition that local DST PLAYER sends is play current flow-medium performance;
Stop the transmission of current stream medium data;
From the reposition of location, to data source of stream media request download stream media data;
The stream medium data that buffer memory is downloaded from data source of stream media;
Resolve the stream medium data of buffer memory;
The stream medium data of resolving output is packaged into the data format that program request protocol type that local DST PLAYER sets needs,, sends stream medium data to local DST PLAYER from the reposition of location.
5, the method for claim 1 is characterized in that, described method further comprises the steps:
Receive the program request order that stops to play current flow-medium performance that local DST PLAYER sends;
Stop to send stream medium data to local DST PLAYER;
Stop from data source of stream media download stream media data.
As the described method of the arbitrary claim of claim 1 to 5, it is characterized in that 6, described data source of stream media is the streaming media on demand server, other network nodes that perhaps provide stream medium data to download.
7, a kind of demand stream media system is characterized in that, described system comprises:
The data download unit is used for downloading corresponding stream medium data according to the program request order to the data source of stream media request;
Data buffer storage unit is used for the stream medium data that buffer memory is downloaded from data source of stream media;
The data parsing unit is used to resolve the stream medium data of buffer memory;
Data transmission unit is used for resolving the data format that the stream medium data of exporting is packaged into the program request protocol type needs of local DST PLAYER setting, sends to local DST PLAYER; And
Program request protocol command interactive unit is used for that to carry out protocol command mutual with local DST PLAYER, according to the program request order that local DST PLAYER sends the data of described data download unit is downloaded, and perhaps the transfer of data of data transmission unit is controlled.
8, system as claimed in claim 7, it is characterized in that described program request order comprises the program request order that the program request order of playing stream media program, the program request order that suspends the current flow-medium performance of broadcast, the program request order that continues to play the current flow-medium performance that is suspended, location reposition are play the program request order of current flow-medium performance or stopped to play current flow-medium performance.
As claim 7 or 8 described systems, it is characterized in that 9, described data source of stream media is the streaming media on demand server, other network nodes that perhaps provide stream medium data to download.
10, a kind of DST PLAYER that comprises the demand stream media system of claim 7.
11, a kind of communication terminal that comprises the demand stream media system of claim 7.
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| CNA2008100665298A CN101252600A (en) | 2008-03-31 | 2008-03-31 | Method, system and equipment of stream medium order program |
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| CNA2008100665298A CN101252600A (en) | 2008-03-31 | 2008-03-31 | Method, system and equipment of stream medium order program |
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| CN101447994B (en) * | 2008-12-30 | 2012-07-04 | 深圳市迅雷网络技术有限公司 | Method for downloading and playing multimedia file and equipment thereof |
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