CN101695090A - Method for realizing real-time sharing of audio and video of mobile terminal and mobile terminal - Google Patents
Method for realizing real-time sharing of audio and video of mobile terminal and mobile terminal Download PDFInfo
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Abstract
The invention provides a method for realizing the real-time sharing of audio and video of a mobile terminal and the mobile terminal. The method comprises the following steps: A. a sending terminal records audio-video data to be played, encodes and compresses the audio-video data and then transmits the audio-video data to a receiving terminal; and B. the receiving terminal decompresses and decodes the received audio-video data, and then invokes the corresponding driving interface to play the audio-video data. According to the invention, the receiving terminal can watch files synchronously watched under the situation that a decoder corresponding to the displaying files of the sending terminal does not exist, the situation that the receiving terminal synchronously displays and plays the content displayed or played by the sending terminal can be met, and the content comprises various entity or non-entity information.
Description
Technical field
The present invention relates to moving communicating field, relate to a kind of method and portable terminal of realizing portable terminal audio frequency and video Real-Time Sharing particularly.
Background technology
Media function is one of critical function of current mobile terminal, and shared its importance aspect resource-sharing that also manifests gradually of medium.At present, the Real-Time Sharing of media informations such as the audio frequency and video between the portable terminal generally all is by earlier media files such as audio frequency and video being transferred to receiving terminal, being carried out the decoding and the broadcast of media file again by receiving terminal.But if receiving terminal is not supported the decoding of associated media file, then this receiving terminal just can't be play these media files; And because file transfer needs a period of time, receiving terminal need wait for that carrying out file than the long time downloads, and just can play; And, share it for needs and play in real time or the mobile phone users of displaying contents, may also need these contents are recorded into file, be transferred to receiving terminal again, can not satisfy in real time and synchronism.
Existing patent documentation has: number of patent application is that the patent application of CN200810066097.0 has proposed " a kind of method of shared play multimedia files and multimedia player ".Though method and multimedia player that this patent application proposes can cushion the medium in the player by the mode of real-time stream, but also need player to carry out media decodes, the player decoding capability is had relatively high expectations, the unsupported file format of some players is had no idea to share play; And, method that this patent application proposes and multimedia player do not relate to and separate the Real-Time Sharing problem of entity file by no means, for example, how terminal is with its CMMB (China Mobile Multimedia Broadcasting, China Mobile multimedia broadcasting) or the received video of broadcast receiver or audio-frequency information Real-Time Sharing give other-end, or how to give other-end with LCD (Liquid Crystal Display, the LCD) displaying contents or the sound Real-Time Sharing of terminal.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method and portable terminal of realizing portable terminal audio frequency and video Real-Time Sharing, arrives receiving terminal with the audio, video data synchronous transmission that transmitting terminal is play.
In order to solve the problems of the technologies described above, the invention provides a kind of method that realizes portable terminal audio frequency and video Real-Time Sharing, may further comprise the steps:
The audio, video data that A, transmitting terminal record will be play carries out being transferred to receiving terminal after the encoding compression to described audio, video data;
B, receiving terminal carry out calling the corresponding driving interface behind the uncompressed encoding to the described audio, video data that receives described audio, video data are play.
Further, said method has following characteristics: described steps A specific implementation is:
The audio, video data that transmitting terminal will be play with the particular rate timing extraction is stored in the audio, video data that extracts in the adjacent Δ t time in the different buffering areas in chronological order, forms a plurality of Δ t time data bags;
The Δ t time data bag in the described different buffering area of encoding compression in turn;
Δ t time data bag after the encoding compression is transferred to receiving terminal.
Further, said method has following characteristics: described extraction audio, video data specific implementation is:
According to decimation periods timing sampling video data, and extract complete voice data in the described decimation periods.
Further, said method has following characteristics: also comprise after the Δ t time data bag in the described different buffering area of described in turn encoding compression:
Δ t time data bag after the encoding compression is stored in the data queue.
Further, said method has following characteristics: described step B specific implementation is:
The described Δ t time data bag that the receiving terminal receiving end/sending end is sent;
Described Δ t time data bag is carried out alternately being stored in the different buffering areas behind the uncompressed encoding;
Alternately takes out audio, video data in the described Δ t time data bag from described different buffering area separate and adjust after, call the LCD driving interface and the CODEC driving interface is play described audio, video data respectively.
The present invention also provides a kind of portable terminal, comprising:
Data recordin module is used to write down the audio, video data of described portable terminal, sends a message to first data processing module then;
First data processing module carries out encoding compression to described audio, video data after being used to receive the message that described data recordin module sends, then the notification data sending module;
Data transmission blocks is used to receive the audio, video data that sends after the notice that described first data processing module sends after the encoding compression.
Further, above-mentioned portable terminal has following characteristics:
Described data recordin module, specifically be used for audio, video data with particular rate timing extraction itself, in chronological order the audio, video data that extracts in the adjacent Δ t time is stored in the different buffering areas, form a plurality of Δ t time data bags, a Δ t of every formation time data bag promptly sends a message to described first data processing module;
Described first data processing module specifically is used for receiving after the described message correspondingly the Δ t time data bag of the described different buffering area of encoding compression in turn, notifies described data transmission blocks then;
Described data transmission blocks specifically is used to receive the described Δ t time data bag after described notice back sends encoding compression.
Further, above-mentioned portable terminal has following characteristics: also comprise:
Data reception module is used to receive the audio, video data that other portable terminal is sent, and sends message to second data processing module then;
Second data processing module carries out uncompressed encoding to described audio, video data after being used to receive described message, notifies the driving interface module then;
The driving interface module is used to receive and calls the corresponding driving interface after the described notice and described audio, video data is shown and play.
Further, above-mentioned portable terminal has following characteristics:
The audio, video data that described data reception module receives is the second Δ t time data bag;
Described second data processing module specifically is used for the described second Δ t time data bag is carried out alternately being stored in different buffering areas behind the uncompressed encoding;
Described driving interface module specifically is used for alternately after described buffering area takes out audio, video data the described second Δ t time data bag and separates and adjust, and calls the LCD driving interface and the CODEC driving interface is play described audio, video data.
The present invention also provides a kind of portable terminal, comprising:
Data reception module is used to receive the audio, video data that other portable terminal is sent, and sends a message to the 3rd data processing module then;
The 3rd data processing module carries out uncompressed encoding to described audio, video data after being used to receive described message, notifies the driving interface module then;
The driving interface module is used to receive and calls the corresponding driving interface after the described notice described audio, video data is play.
To sum up, the method and the portable terminal of realization portable terminal audio frequency and video Real-Time Sharing provided by the invention, can make receiving terminal under the situation that does not have transmitting terminal played file respective decoder, watch file synchronously, or can be under the situation that does not have transmitting terminal medium hardware (as CMMB, camera, broadcast receiver etc.) the synchronous playing medium, or satisfy receiving terminal demonstration synchronously in real time and play the shown or play content of transmitting terminal, comprise various entities or non-entity information.Audio frequency and video Real-Time Sharing by between portable terminal can add the interchange between the large user, and the multimedia that strengthens the user is experienced.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the portable terminal (transmitting terminal) according to the embodiment of the invention;
Fig. 2 is the schematic diagram of the portable terminal (receiving terminal) according to inventive embodiments;
Fig. 3 is the schematic diagram according to the portable terminal (comprising transmitting terminal and receiving terminal function) of inventive embodiments;
Fig. 4 is the flow chart according to the method for the realization portable terminal audio frequency and video Real-Time Sharing of inventive embodiments;
Fig. 5 shows thread T110 control and the data flow diagram according to the embodiment of the invention;
Fig. 6 shows thread T120 control and the data flow diagram according to the embodiment of the invention;
Fig. 7 shows thread T130 control and the data flow diagram according to the embodiment of the invention;
Fig. 8 shows thread T210 control and the data flow diagram according to the embodiment of the invention;
Fig. 9 shows thread T220 control and the data flow diagram according to the embodiment of the invention;
Figure 10 shows thread T230 control and the data flow diagram according to the embodiment of the invention.
Embodiment
At present, various portable terminals, particularly mobile phone all adopt bluetooth as the short range wireless transmission mode basically, and therefore, the embodiment of the invention is carried out audio frequency and video Real-Time Sharing between various portable terminals based on this transmission means, but is not limited to this transmission means.Main technical scheme is: transmitting terminal is noted the audio, video data that it need show and play, and carry out encoding compression, give receiving terminal by Bluetooth transmission, receiving terminal is again with this data decompression decoding, and shows and play by calling its corresponding driving interface.Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
Fig. 1 is the schematic diagram of the portable terminal (transmitting terminal) of the embodiment of the invention, as shown in Figure 1, the portable terminal of present embodiment, promptly transmitting terminal S100 comprises data recordin module S110, data processing module S120 and data transmission blocks S130.
Data recordin module S110 is used to extract the audio, video data of transmitting terminal S100, be the initial data of RGB and PCM, after data preliminary treatment reduction data volume, be stored in the buffering area, the final Δ t time data bag that forms, notification data processing module S120 is for further processing then;
After data processing module S120 obtains the notification message of data recordin module S110, the data that are stored in the buffering area are carried out encoding compression, and the encoding compression result is stored in data queue, then, notification data sending module S130 is for further processing;
Data transmission blocks S130 obtains data processing module S120 notification message, calls blue tooth interface the audio, video data of preserving in the data queue is sent to receiving terminal by bluetooth.
Fig. 2 is the schematic diagram of the portable terminal (receiving terminal) of inventive embodiments, as shown in Figure 2, the portable terminal of present embodiment, promptly receiving terminal R100 comprises data reception module R110, data processing module R120 and driving interface module R130.
Data reception module R110 is used for receiving the audio, video data bag of coming from the transmitting terminal biography by bluetooth, be stored among the P2 of data queue, and notification data processing module R120 handles;
After data processing module R120 is used to receive the notice of data reception module R110, audio, video data among the data formation P2 is decompressed, decodes, recover each sampling of data in the Δ t time data bag, be stored in the buffering area, notify driving interface module R130 to handle then;
After driving interface module R130 is used to receive the notice of data processing module R120, handle the sampling of data in the buffering area, obtain original RGB data and PCM data, call demonstration and broadcast that LCD driving interface and CODEC driving interface are carried out audio, video data.
Fig. 3 is the schematic diagram of the portable terminal (comprising transmitting terminal and receiving terminal function) of inventive embodiments, as shown in Figure 3, the portable terminal 10 of present embodiment comprises the functional module (data recordin module S110, data processing module S120 and data transmission blocks S130) of above-mentioned transmitting terminal, is used for sending the audio, video data that itself shows and play to other portable terminal; Also comprise the functional module (data reception module R110, data processing module R120 and driving interface module R130) of above-mentioned receiving terminal, be used to show and play the audio, video data that other portable terminal is sent.The portable terminal 10 of present embodiment promptly can also can be used as receiving terminal as transmitting terminal.
Below introduce in detail and utilize portable terminal provided by the invention to realize the method for portable terminal audio frequency and video Real-Time Sharing, the method of realization portable terminal audio frequency and video Real-Time Sharing of the present invention mainly is by extracting the original audio, video data of transmitting terminal, be RGB data and PCM data, through coding and compression, effectively reduce the packet size, send to receiving terminal by bluetooth then, receiving terminal receives this audio, video data by bluetooth, it is carried out decompress(ion) and decoding, and process LCD driving and audio frequency CODEC driving audio frequency and video the most at last play back.
As shown in Figure 4, the method for the realization portable terminal audio frequency and video Real-Time Sharing of present embodiment comprises step:
S401, transmitting terminal record itself carry out the audio, video data of playing to give receiving terminal by Bluetooth transmission after the encoding compression to described audio, video data;
In the method, transmitting terminal S100 comprises data recordin module S110, data processing module S120 and data transmission blocks S130.Use the function that thread T110 realizes data recordin module S110 in the present embodiment, use the function that thread T120 realizes data processing module S120, use the function that thread T130 and bluetooth module are realized data transmission blocks S130.
In the present embodiment, the audio, video data among thread T110 record a period of time Δ t.This audio, video data comprises that transmitting terminal will output to the RGB data of its LCD driving interface module, and the PCM data that will output to audio frequency CODEC (decoding-decoder) module.This recording method should reduce the audio frequency and video original data volume as far as possible: for video RGB data, can adopt the reduction video data resolution, can adopt and reduce the video data figure place, can adopt and reduce video data extraction speed, or adopt other modes that reduces the video original data volume, or do not carry out video Data Transmission and transmitting audio data only; For voice data, can adopt and reduce the voice data figure place, can adopt and reduce voice data and extract speed, can carry out that u leads or A leads coding, or adopt other modes that reduces the audio frequency original data volume, or do not carry out audio data transmission and transmitting video data only.The time that is consumed for reduction audio, video data amount in the recording process should be less than the sampling period to audio, video data.Thread T110 adopts double buffering or many buffering methods to be stored in the memory recorded data, after for example thread T110 uses buffering area B1 record a period of time Δ t, notice thread T120 carries out data processing to buffering area B1, at this moment, thread T110 can be when thread T120 handles the data of buffering area B1, continue new data from the sample survey is kept among the buffering area B2, the data by the adjacent Δ t time sample of time relation are kept in the different buffering areas.
Fig. 5 shows thread T110 control and the data flow diagram according to the embodiment of the invention.As shown in Figure 5, thread T110 is with certain extraction speed timing extraction RGB data and PCM data, through the data preliminary treatment, carry out the adjustment and the compression of simple image and voice data, store among the buffering area B1,, in buffering area B1, carry out sampling of data so always and preserve as a sampling of data, after carrying out the Δ t time, form a complete Δ t time data bag.At this moment, thread T110 notice thread T120 handles the Δ t time data bag among the buffering area B1, and the sampling of data in the ensuing Δ t time is kept among the buffering area B2, and processing procedure is carried out at buffering area B1 and buffering area B2 circulation according to this afterwards.Here being stored in the double buffering with the audio, video data with sampling is example, the audio, video data of sampling can certainly be stored in the multiple buffer, and method is similar, just repeats no more here.And be not quite similar for RGB data and PCM data pick-up mode: the RGB data are carried out timing sampling according to decimation periods, and the PCM data that extracted then are the complete documentations to the PCM data in this decimation periods.
Then, thread T120 processing threads data that T110 preserves.Fig. 6 shows thread T120 control and the data flow diagram according to the embodiment of the invention.As shown in Figure 6, thread T120 obtains the notification message of thread T110, handles the Δ t time data bag among buffering area B 1 and the buffering area B2 in turn.Processing procedure can comprise steps such as coding, compression, also can take other modes, purpose is to eliminate the redundant information between each sampling of data in the Δ t time data bag as far as possible, reaches minimizing of data space, and reduces the requirement to the Bluetooth transmission bandwidth.Thread T120 carries out the consuming time of compressed encoding of a Δ t time data should be less than Δ t, otherwise can cause new Δ t time data effective the time, can not in time carry out compressed encoding and handle.After the step process such as Δ t time data bag process coding, compression, be stored among the P1 of data queue, and notice thread T130.By the application of the P1 of data queue, can adjust the number that at every turn sends Δ t time data bag flexibly by bluetooth module, optimize the validity in Bluetooth transmission stage.
Then, thread T130 processing threads data that T120 preserves.Fig. 7 shows thread T130 control and the data flow diagram according to the embodiment of the invention.As shown in Figure 7, after thread T130 obtains the notification message of thread T120, select the data among the P1 of data queue to eat dishes without rice or wine to send by the bluetooth of bluetooth module.When sending these data by bluetooth module, can adopt OPP (the Object Push Profile of bluetooth, object push-and-pull host-host protocol), FTP agreements such as (File Transfer Protocol, file transfer protocol (FTP)) carries out, and also can adopt other agreements to carry out.The system of selection of data can be adjusted as the case may be among the P1 of data queue, can transmit the Δ t time data bag of fixed number at every turn, also can dynamically adjust according to link condition, can be before calling the bluetooth module interface at every turn and carrying out Bluetooth transmission, with the transmission Δ t of institute time data bag number message transmission to receiving terminal.Whether Δ t time data bag need as adding Δ t time data end-of-packet sign, finish receiving so that receiving terminal can be judged a Δ t time data bag through handling before sending.
S402, receiving terminal carry out calling the corresponding driving interface behind the uncompressed encoding to the audio, video data that receives described audio, video data are play.
In the method, receiving terminal R100 comprises data reception module R110, data processing module R120 and driving interface module R130.Use the function that bluetooth module and thread T210 realize data reception module R110 in the present embodiment, use the function that thread T220 realizes data processing module R120, use the function that thread T230 realizes driving interface module R130.
Fig. 8 shows thread T210 control and the data flow diagram according to the embodiment of the invention.As shown in Figure 8, after bluetooth module eated dishes without rice or wine to receive the audio, video data that transmitting terminal sends by bluetooth, notice thread T210 received.Thread T210 stores this audio, video data into the current writing position that receives among the P2 of data queue.Be received when detecting a complete Δ t time data bag,, then the end mark that receives is got afterwards data and be stored among other unit of the P2 of data queue, and notice thread T220 carry out data processing as judging by Δ t time data end-of-packet sign.If thread T210 does not obtain a complete Δ t time data bag at predetermined T in the time, then notify upper layer application to carry out fault processing, be in data receiving state to prevent receiving terminal always.
Then, thread T220 carries out the audio, video data processing.Thread T220 receives the notification message of thread T210, from accept the P2 of data queue, fetch data decompress, operation such as decoding, obtain a Δ t time data, be stored in double buffering or multiple buffer, and notice driving interface module R130 handles.Fig. 9 shows thread T220 control and the data flow diagram according to the embodiment of the invention.As shown in Figure 9, after thread T220 receives the notification message of thread T210, take out a Δ t time data bag from the current read-out position of the P2 of data queue, decompress, decode, recover each sampling of data in the Δ t time data bag, be stored in multiple buffer, for example among buffering area B3 or the buffering area B4, and notice thread T230 carries out subsequent treatment.If previous Δ t time data bag be stored among the buffering area B3, then next Δ t time data bag is stored among the buffering area B4, i.e. the preservation of Δ t time data bag sampling of data and handle hockets between two buffering areas.
Then, the interface function of thread T230 realization and driver.After thread T230 receives the notification message of thread T220, from double buffering (or multiple buffer), take out data and carry out preliminary treatment, meeting LCD and audio frequency CODEC requirement, and call corresponding LCD driver and audio driver RGB, PCM data.Wherein, the RGB data are used transmitting terminal RGB sampling rate to carry out LCD to refresh; The PCM data are called audio driver and are play then according to information such as the sample rate of this PCM, sampling resolution, compress modes.
Figure 10 shows thread T230 control and the data flow diagram according to the embodiment of the invention.
As shown in figure 10, after thread T230 receives the notification message of thread T220, from data buffer zone B3 or data buffer zone B4, take out the audio, video data of sampling in the Δ t time data bag, through PCM data, RGB data separating, the RGB data are adjusted, the PCM data are adjusted, and call the demonstration of LCD driving interface and CODEC driving interface then and play the audio, video data of this sampling.PCM, RGB data separating, steps such as the adjustment of RGB data, the adjustment of PCM data mainly are to make the data that finally are input to LCD driving interface and CODEC driving interface satisfy the requirement of the corresponding interface.To the processing mode of audio, video data of sampling, be different for the PCM data with the RGB data, this is the signal characteristic decision by it, and from the sample mode reflection of sampling of data.
In sum, method by portable terminal of the present invention and realization portable terminal audio frequency and video Real-Time Sharing, the audio, video data synchronous transmission that transmitting terminal can be play is to receiving terminal, owing to adopt the data that will finally output to LCD and audio frequency CODEC to send, realized the synchronous of receiving terminal LCD image and sound and transmitting terminal.Like this, can make receiving terminal under the situation that does not have transmitting terminal played file respective decoder, watch file synchronously, or can be under the situation that does not have transmitting terminal medium hardware (as CMMB, camera, broadcast receiver etc.) the synchronous playing medium, make the synchronous Real-Time Sharing media information of user, reach the audio frequency and video Real-Time Sharing between portable terminal, add the interchange between the large user, the multimedia that strengthens the user is experienced.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. method that realizes portable terminal audio frequency and video Real-Time Sharing may further comprise the steps:
The audio, video data that A, transmitting terminal record will be play carries out being transferred to receiving terminal after the encoding compression to described audio, video data;
B, receiving terminal carry out calling the corresponding driving interface behind the uncompressed encoding to the described audio, video data that receives described audio, video data are play.
2. the method for claim 1 is characterized in that, described steps A specific implementation is:
The audio, video data that transmitting terminal will be play with the particular rate timing extraction is stored in the audio, video data that extracts in the adjacent Δ t time in the different buffering areas in chronological order, forms a plurality of Δ t time data bags;
The Δ t time data bag in the described different buffering area of encoding compression in turn;
Δ t time data bag after the encoding compression is transferred to receiving terminal.
3. method as claimed in claim 2 is characterized in that: described extraction audio, video data specific implementation is:
According to decimation periods timing sampling video data, and extract complete voice data in the described decimation periods.
4. method as claimed in claim 2 is characterized in that: also comprise after the Δ t time data bag in the described different buffering area of described in turn encoding compression:
Δ t time data bag after the encoding compression is stored in the data queue.
5. method as claimed in claim 2 is characterized in that: described step B specific implementation is:
The described Δ t time data bag that the receiving terminal receiving end/sending end is sent;
Described Δ t time data bag is carried out alternately being stored in the different buffering areas behind the uncompressed encoding;
Alternately takes out audio, video data in the described Δ t time data bag from described different buffering area separate and adjust after, call the LCD driving interface and the CODEC driving interface is play described audio, video data respectively.
6. portable terminal comprises:
Data recordin module is used to write down the audio, video data of described portable terminal, sends a message to first data processing module then;
First data processing module carries out encoding compression to described audio, video data after being used to receive the message that described data recordin module sends, then the notification data sending module;
Data transmission blocks is used to receive the audio, video data that sends after the notice that described first data processing module sends after the encoding compression.
7. portable terminal as claimed in claim 6 is characterized in that,
Described data recordin module, specifically be used for audio, video data with particular rate timing extraction itself, in chronological order the audio, video data that extracts in the adjacent Δ t time is stored in the different buffering areas, form a plurality of Δ t time data bags, a Δ t of every formation time data bag promptly sends a message to described first data processing module;
Described first data processing module specifically is used for receiving after the described message correspondingly the Δ t time data bag of the described different buffering area of encoding compression in turn, notifies described data transmission blocks then;
Described data transmission blocks specifically is used to receive the described Δ t time data bag after described notice back sends encoding compression.
8. portable terminal as claimed in claim 6 is characterized in that, also comprises:
Data reception module is used to receive the audio, video data that other portable terminal is sent, and sends message to second data processing module then;
Second data processing module carries out uncompressed encoding to described audio, video data after being used to receive described message, notifies the driving interface module then;
The driving interface module is used to receive and calls the corresponding driving interface after the described notice and described audio, video data is shown and play.
9. portable terminal as claimed in claim 8 is characterized in that,
The audio, video data that described data reception module receives is the second Δ t time data bag;
Described second data processing module specifically is used for the described second Δ t time data bag is carried out alternately being stored in different buffering areas behind the uncompressed encoding;
Described driving interface module specifically is used for alternately after described buffering area takes out audio, video data the described second Δ t time data bag and separates and adjust, and calls the LCD driving interface and the CODEC driving interface is play described audio, video data.
10. portable terminal comprises:
Data reception module is used to receive the audio, video data that other portable terminal is sent, and sends a message to the 3rd data processing module then;
The 3rd data processing module carries out uncompressed encoding to described audio, video data after being used to receive described message, notifies the driving interface module then;
The driving interface module is used to receive and calls the corresponding driving interface after the described notice described audio, video data is play.
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