CN103269450A - Multimedia system for Android smart television set - Google Patents
Multimedia system for Android smart television set Download PDFInfo
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- CN103269450A CN103269450A CN2013101467651A CN201310146765A CN103269450A CN 103269450 A CN103269450 A CN 103269450A CN 2013101467651 A CN2013101467651 A CN 2013101467651A CN 201310146765 A CN201310146765 A CN 201310146765A CN 103269450 A CN103269450 A CN 103269450A
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Abstract
The invention relates to a multimedia system for an Android smart television set. The multimedia system comprises a digital television service module, a television operating system media playing module and a digital television playing module. The digital television service module is used for obtaining and storing program information relevant to digital video broadcasting flow. The television operating system media playing module is used for obtaining the program information of the digital video broadcasting flow from the digital television service module and carrying out reconstitution on the media resource locators according to the program information, wherein the program information of the digital video broadcasting flow corresponds to media resource locators transmitted through NGB-H/J application. The digital television playing module is used for carrying out data structure de-encapsulation on the reconstituted locators, and playing the digital video broadcasting flow according to the de-encapsulated data. The multimedia system for the Android smart television set integrates the playing function of digital video broadcasting into an Android multimedia system, and achieves unified call of upper layer application and unified management on various types of media playing by an Android framework layer, and can well support the media functions in radio and television standards of the next generation.
Description
Technical field
The present invention relates to Android intelligent television field, relate in particular to a kind of multimedia system towards the Android intelligent television.
Background technology
Along with the development of intelligent operating system in the portable terminal, television industries has also begun the transformation to intelligent television operating system from traditional middleware Technology.Simultaneously, the Android system with its increasing income property and ease for use, is just obtaining increasing popularizing as a intelligent terminal operating system of increasing income.The Android system has a large amount of third party application supports, with the basis of Android system as the intelligent television system, can use for the intelligent television user provides a large amount of third parties.
At present, the multimedia system of Android is supported broadcast and the control of local file and files in stream media etc., but the broadcast of digital television broadcast stream is not supported.At present traditional way is, the playing function of digital television broadcasting stream is made the form of a local dynamic base, and call by JNI on the upper strata then, the encapsulation of java layer, and finally the form of using with an Android presents.This way does not incorporate the playing function of digital television broadcasting stream in the multimedia framework of Android, and then be unfavorable for that upper layer application to the unified use of the playing function of local media, Streaming Media and digital television broadcasting stream, is unfavorable for that also the Android framework is to the unified management of various media play function.
Based on this, present stage, urgent problem was when allowing Android support digital television broadcast stream playing function, the playing function of digital television broadcasting stream can be dissolved in the Android multimedia system, thereby the unification that reaches upper layer application is called and the unified management of Android ccf layer to various media play.
Summary of the invention
The purpose of this invention is to provide a kind of multimedia system towards the Android intelligent television that can overcome above-mentioned defective.
In first aspect, the invention provides a kind of multimedia system towards the Android intelligent television, comprise TV operation system media play module, digital television service module and Digital Television playing module, wherein: described digital television service module, for the programme information that obtains and storage is relevant with digital television broadcasting stream; Described TV operation system media play module, be used for obtaining the programme information of using the corresponding digital television broadcasting stream of the media resource finger URL that imports into NGB-H/J from described digital television service module, and according to described programme information described media resource finger URL be reconstructed; Described Digital Television playing module is used for the finger URL after the reconstruct is carried out the data structure decapsulation, according to the data after the decapsulation digital television broadcast stream is play.
Preferably, described TV operation system media play module is arranged to: NGB-H/J is used the media resource finger URL that imports into be converted to 10 systems from 16 systems; Obtain the programme information corresponding with described media resource finger URL according to the media resource finger URL after the conversion from described digital television service module; According to described programme information described media resource finger URL is reconstructed.
Preferably, described system also comprises Android media play client and Android media play service end and Android media play module, wherein, described TV operation system media play module also is arranged to: described media resource finger URL is judged; If described media resource finger URL belongs to the play service of digital television broadcasting stream, then carry out obtaining of described programme information; If described media resource finger URL does not belong to the play service of digital television broadcasting stream, then described media resource finger URL is passed to described Android media play client, and the binder communication mechanism by Android passes to Android media play service end from Android media play client, and passes to described Android media play module; Described Android media play module is play the play service that does not belong to digital television broadcasting stream according to described media resource finger URL.
Preferably, described digital television service module also is used for the storage a plurality of projects relevant with a plurality of programme informations, each project comprises primitive network ID, transport stream ID and service ID, described TV operation system media play module obtains the programme information relevant with described media resource finger URL by primitive network ID, transport stream ID in the described media resource finger URL and service ID and described a plurality of project are compared according to comparison result.
Preferably, by carrying out data encapsulation to described programme information with to the type of URL(uniform resource locator) url, described TV operation system media play module is reconstructed described media resource finger URL.
Preferably, the audio coding decoding type in the described programme information, coding and decoding video type, audio frequency PID and video PID are set among the built-in data type KeyVector of Android, and the type of described URL(uniform resource locator) url is digital video broadcasting.
Preferably, described TV operation system media play module, described Android media play client and described Android media play service end one or more expansion interfaces of having the mutual correspondence that meets the NGB-H/J standard respectively.
Preferably, described TV operation system media play module inquires current tuner ID from described digital television service module, and carries out the frequency locking operation by described tuner ID, described primitive network ID and described transport stream ID.
Preferably, described system also comprises: meet the interface of broadcasting and television network standard NGB-H/J of future generation, be used for importing the media resource finger URL that NGB-H/J uses into described TV operation system media play module.
In second aspect, the invention provides a kind of Android intelligent television, it includes in the multimedia system towards the Android intelligent television described in the above-mentioned first aspect.
The present invention has expanded the multimedia system of Android, make when Android supports that digital television broadcast stream is play, the playing function of digital television broadcasting is dissolved in the Android multimedia system, thereby the unification that reaches upper layer application is called and the unified management of Android ccf layer to various media play, and can well support the media function in the radio and television standard of future generation.
Description of drawings
Below with reference to accompanying drawings specific embodiments of the present invention is described in detail, in the accompanying drawings:
Fig. 1 is the structured flowchart towards the multimedia system of Android intelligent television according to the embodiment of the invention; And
Fig. 2 is the flow chart towards the implementation method of the multimedia system of Android intelligent television according to the embodiment of the invention.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Fig. 1 is the structured flowchart towards the multimedia system of Android intelligent television according to the embodiment of the invention.
As shown in Figure 1, described multimedia system comprises the playback interface of the java layer of Android, the JNI layer of Android, meet radio and television of future generation (Next Generation Broadcasting, the NGB-H/J interface of media interface standard NGB-H/J NGB), TV operation system media play module (TvosMediaPlayer), digital television service module (DTVServer), Android media play client, Android media play service end, Digital Television playing module (DTVPlayer), Android media play module (StagefrightPlayer).
The JNI layer that Android uses the playback interface of java layer of general and Android and Android is relevant, and this is well-known to those skilled in the art, so repeats no more in order to avoid blur theme of the present invention.
Emphasis of the present invention is described below, i.e. the processing that NGB-H/J is used emphatically.
The application of NGB-H/J is carried out by the NBG-H/J interface, and upper layer application (NGB-H/J application) is imported the media resource finger URL into TvosMediaPlayer by the NGB-H/J interface.Comprise primitive network ID, transport stream ID and service ID in the media resource finger URL.
DTVServer obtains and analyzes the programme information of digital television broadcasting stream, in general, can the tuner module from the set-top box that is connected to TV obtain this programme information.DTVServer is present in the form of Android local service in the middle of the system, and the functions such as program information table, channel search and frequency locking of digital television broadcasting stream are provided for other modules in the system.
TvosMediaPlayer is by carrying out alternately with DTVServer, takes the programme information of digital television broadcasting stream from DTVServer, the media resource finger URL that imports into according to programme information reconstruct NGB-H/J.The media resource finger URL of reconstruct is imported into the media play client of Andriod.In addition, TvosMediaPlayer inquires current tuner ID from DTVServer, and carries out the frequency locking operation by described tuner ID, described primitive network ID and described transport stream ID.TvosMediaPlayer can shield the details of Android media framework, simultaneously can on the function support of NGB-H/J is provided.
By the communication mechanism such as binder among the Andriod, the media resource finger URL of reconstruct is delivered to Android media play service end from Android media play client.In addition, need be at the media play service end one or more media interfaces corresponding with client-side extensions of the Android of TvosMediaPlayer, standard, to satisfy the demand of the media play interface of NGB-H/J.
Andriod media play service end judges whether it is the broadcast of digital television broadcasting stream, if, then call DVBPlayer and play, import the media resource finger URL of reconstruct into DVBPlayer.
DTVPlayer carries out decapsulation by the media resource finger URL/Parameters data structure to reconstruct, according to the parameter that decapsulation is obtained digital broadcast television stream is play.
Fig. 2 is the flow chart towards the implementation method of the multimedia system of Android intelligent television according to the embodiment of the invention.
In step 201, upper layer application (NGB-H/J application) is imported URLs into TvosMediaPlayer by the NGB-H/J interface.For different medium types, the media resource finger URL also has different forms.For example, the form of the finger URL of local media file is file: //<host 〉/<path 〉.The form of the finger URL of files in stream media is: http: //<distance host IP 〉:<distance host port 〉/<path 〉.Dvb: //<original_network_id 〉.<transport_stream_id 〉.<service_id 〉, this is the concrete form of the media resource finger URL of digital television broadcasting stream.
In step 202, according to the difference of the agreement mark that begins in the media resource finger URL, judge whether it belongs to the play service of digital television broadcasting stream.As described in step 201, with dvb: the character string of // beginning represents the play service that this media resource finger URL belongs to digital television broadcasting stream.If this media resource finger URL belongs to the play service of digital television broadcasting stream, then flow process proceeds to step 203; Otherwise then this media resource finger URL does not belong to the play service of digital television broadcasting stream, and flow process proceeds to step 206.
In step 203, reset the media resource finger URL.
For example, before resetting, the media resource finger URL of digital television broadcasting program stream is dvb: // 888.3.12D, and wherein 888 is primitive network ID, and 3 are TS stream ID, and 12D is service ID.It will be appreciated by those skilled in the art that and require above-mentioned ID to adopt 16 systems in the NGB-H/J standard.
In the process of resetting the media resource finger URL, above-mentioned ID need be converted to 10 systems from 16 systems.Object lesson at above-mentioned media resource finger URL, resetting is conversion by from 16 systems to 10 systems, and original network ID is set to 2184, TS stream ID and is set to 3, service ID is set to 301, is dvb: // 2184.3.301 thereby obtain a new URLs.
In step 204, obtain its program information corresponding according to new URLs.
Because the media resource finger URL is to belong to the digital television broadcasting business of putting of spreading, so need carry out alternately with the DTVServer service, obtain programme information.
Since network ID, TS stream ID and the corresponding program of service ID, and its program information corresponding has been stored in the database when data flow is imported into by the simulated television demodulator.In other words, the programme information in the database is corresponding one group of data separately, i.e. network ID, TS stream ID and service ID.
Therefore, compare by the group of the ID in the finger URL that will reset and the ID group in the database, can from database, extract program information corresponding.Programme information comprises audio language type, audio/video encoding/decoding type, audio frequency and video PID etc.
In step 205, according to programme information reconstruct finger URL, concrete step is as follows.
The value of audio coding decoding type and coding and decoding video type is given parameter audiocodec and videocodec respectively, and the value of audio frequency PID and video PID is given parameter audiopid and videopid respectively.
The media play client of Android provides following interface:
status_t?setDataSource(const?char*url,
const?KeyedVector<String8,String8>*headers);
Parameters u rl is set to " dvb: // ";
KeyVector is a built-in data type of Android, can be by it being carried out following such headers that arranges:
<”v_codec”,“videocodec”>
<”a_codec”,“audiocodec”>
<”a_pid”,“audiopid”>
<”v_pid”,“videopid”>
Like this, the url that sets and headers are encapsulated in as above the data structure.
In step 206, the parameter that will come from step 202 and/or step 205 is delivered to the media play client of Android.Further, the media play client is carried out following judgement: if the parameter of importing into from step 205, then url and headers are effective parameters; If the parameter of importing into from step 202, then url is effectively, and headers is put empty getting final product.
In step 207, parameter is delivered to the media play service end from the media play client of Android.The media play service end of Android and media play client are to operate in the middle of two processes, and they communicate by the binder communication mechanism of Android.For example, above-mentioned parameter transmission from the client to the service end can be undertaken by the binder communication mechanism between the two.
In step 208, the media play service end judges whether it is the broadcast of digital television broadcasting stream.
Whether be the broadcast of digital television broadcasting stream, for example, url is dvb if can judge according to parameter: // namely belonging to digital television broadcasting flows.If then flow process proceeds to step 209; Otherwise flow process proceeds to step 210.
In step 209, call the DVBPlayer player digital television broadcast stream is play.The DVBPlayer player can take audio/video encoding/decoding type and audio frequency and video PID, thereby the interface that calls hardware platform carries out play operation by the data structure of step 205 encapsulation is carried out decapsulation.
In step 210, call the Android built-in local file of player StagefrightPlayer or files in stream media and play.
In step 211, play beginning.
The professional should further recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, composition and the step of each example described in general manner according to function in the above description.These functions still are that software mode is carried out with hardware actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for using distinct methods to realize described function to each, but this realization should not thought and exceeds scope of the present invention.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form known in random asccess memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or the technical field.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. multimedia system towards the Android intelligent television comprises:
The digital television service module is used for obtaining and storage is flowed relevant programme information with digital television broadcasting;
TV operation system media play module, be used for obtaining the programme information of using the corresponding digital television broadcasting stream of the media resource finger URL that imports into NGB-H/J from described digital television service module, and according to described programme information described media resource finger URL be reconstructed;
The Digital Television playing module is used for the finger URL after the reconstruct is carried out the data structure decapsulation, according to the data after the decapsulation digital television broadcast stream is play.
2. system according to claim 1, wherein, described TV operation system media play module is arranged to:
NGB-H/J is used the media resource finger URL that imports into be converted to 10 systems from 16 systems;
Obtain the programme information corresponding with described media resource finger URL according to the media resource finger URL after the conversion from described digital television service module;
According to described programme information described media resource finger URL is reconstructed.
3. system according to claim 1 also comprises Android media play client and Android media play service end and Android media play module, and wherein, described TV operation system media play module also is arranged to:
Described media resource finger URL is judged;
If described media resource finger URL belongs to the play service of digital television broadcasting stream, then carry out obtaining of described programme information;
If described media resource finger URL does not belong to the play service of digital television broadcasting stream, then described media resource finger URL is passed to described Android media play client, and the binder communication mechanism by Android passes to Android media play service end from Android media play client, and passes to described Android media play module;
Described Android media play module is play the play service that does not belong to digital television broadcasting stream according to described media resource finger URL.
4. system according to claim 1, wherein, described digital television service module also is used for the storage a plurality of projects relevant with a plurality of programme informations, each project comprises primitive network ID, transport stream ID and service ID, described TV operation system media play module obtains the programme information relevant with described media resource finger URL by primitive network ID, transport stream ID in the described media resource finger URL and service ID and described a plurality of project are compared according to comparison result.
5. system according to claim 1, wherein, by carrying out data encapsulation to described programme information with to the type of URL(uniform resource locator) url, described TV operation system media play module is reconstructed described media resource finger URL.
6. system according to claim 5, wherein, audio coding decoding type in the described programme information, coding and decoding video type, audio frequency PID and video PID are set among the built-in data type KeyVector of Android, and the type of described URL(uniform resource locator) url is digital video broadcasting.
7. system according to claim 1, wherein, described TV operation system media play module, described Android media play client and described Android media play service end one or more expansion interfaces of having the mutual correspondence that meets the NGB-H/J standard respectively.
8. system according to claim 4, wherein, described TV operation system media play module inquires current tuner ID from described digital television service module, and carries out the frequency locking operation by described tuner ID, described primitive network ID and described transport stream ID.
9. system according to claim 1 also comprises: meet the interface of broadcasting and television network standard NGB-H/J of future generation, be used for importing the media resource finger URL that NGB-H/J uses into described TV operation system media play module.
10. an Android intelligent television comprises the described multimedia system towards the Android intelligent television as one of claim 1-9.
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CN105704505A (en) * | 2016-02-03 | 2016-06-22 | 国家新闻出版广电总局广播科学研究院 | Method and intelligent television terminal for supporting all media playing in intelligent television operating system |
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CN107566899A (en) * | 2017-07-21 | 2018-01-09 | 深圳创维数字技术有限公司 | Digital video broadcasting terminal and storage device based on Android system |
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