CN106452643B - Control method for playing back, device, terminal and play system - Google Patents
Control method for playing back, device, terminal and play system Download PDFInfo
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- CN106452643B CN106452643B CN201610882823.0A CN201610882823A CN106452643B CN 106452643 B CN106452643 B CN 106452643B CN 201610882823 A CN201610882823 A CN 201610882823A CN 106452643 B CN106452643 B CN 106452643B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
- H04J3/0658—Clock or time synchronisation among packet nodes
- H04J3/0661—Clock or time synchronisation among packet nodes using timestamps
- H04J3/0664—Clock or time synchronisation among packet nodes using timestamps unidirectional timestamps
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
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Abstract
An embodiment of the present invention provides a kind of control method for playing back, device, terminal and play system, this method is used splits into multiple packets of audio data by audio data, which includes stabbing at the first time；Obtain the clocking error of playback equipment；The stamp of the first time in the packets of audio data is changed according to the clocking error, to obtain modified packets of audio data；The modified packets of audio data is sent to the playback equipment.The program modifies to the first time stamp in the packets of audio data according to the clocking error of playback equipment, and the real time which plays modified packets of audio data is that this stabs the corresponding time at the first time.When multiple playback equipments play simultaneously, the time that multiple playback equipment plays identical packets of audio data is identical, in terms of existing technologies, can improve the synchronism of playing audio-fequency data between multiple playback equipments.
Description
Technical field
The present invention relates to technical field of electronic equipment, and in particular to a kind of control method for playing back, device, terminal and plays system
System.
Background technology
With the improvement of living standards, audio-visual devices play important role in people's lives.It currently, will be multiple
Music player devices (for example, speaker, player, mobile phone etc.) and control device are interconnected by wired or wireless network,
A play system is formed, identical music is played simultaneously, has been widely used.
In above-mentioned play system, each equipment has independent system clock.Each playback equipment according to its own
System clock plays music.However, what the system clock of each playback equipment and control device not always synchronized.It is each
There may be the subtle time differences each other for playback equipment and control device.When multiple playback equipments play identical music
When, the above-mentioned subtle time difference causes the playing progress rate of each playback equipment inconsistent, thereby results between multiple playback equipments
Synchronism is low.
Invention content
A kind of control method for playing back of offer of the embodiment of the present invention, device, terminal and play system, can improve multiple broadcastings
The synchronism of playing audio-fequency data between equipment.
The embodiment of the present invention provides a kind of control method for playing back, including：
Audio data is split into multiple packets of audio data, which includes stabbing at the first time；
Obtain the clocking error of playback equipment；
The stamp of the first time in the packets of audio data is changed according to the clocking error, to obtain modified audio data
Packet；
The modified packets of audio data is sent to the playback equipment.
Correspondingly, the embodiment of the present invention also provides a kind of broadcast control device, including：
Module is split, for audio data to be split into multiple packets of audio data, when which includes first
Between stab；
Acquisition module, the clocking error for obtaining playback equipment；
Modified module, for changing the stamp of the first time in the packets of audio data according to the clocking error, to be repaiied
Packets of audio data after changing；
Sending module, for sending the modified packets of audio data to the playback equipment.
Correspondingly, the embodiment of the present invention also provides a kind of terminal, including：
Touch screen, the touch operation for receiving user；
It is stored with the memory of executable program code；
The processor coupled with the memory；
The processor calls the executable program code stored in the memory, executes above-mentioned control method for playing back.
The embodiment of the present invention also provides a kind of play system, including broadcast control device and at least one playback equipment, should
Playback equipment is connect by network with the broadcast control device, which includes：
It is stored with the memory of executable program code；
The processor coupled with the memory；
The processor calls the executable program code stored in the memory, executes above-mentioned control method for playing back.
The embodiment of the present invention is used splits into multiple packets of audio data by audio data, which includes first
Timestamp；Obtain the clocking error of playback equipment；The stamp of the first time in the packets of audio data is changed according to the clocking error,
To obtain modified packets of audio data；The modified packets of audio data is sent to the playback equipment.The program is according to broadcasting
The clocking error of equipment modifies to the first time stamp in the packets of audio data, and modified packets of audio data is sent
To playback equipment, when the real time which plays the modified packets of audio data is that this stabs corresponding at the first time
Between.When multiple playback equipments play simultaneously, the time that multiple playback equipment plays identical packets of audio data is identical, namely
Can keep being played simultaneously between multiple playback equipment, in terms of existing technologies, can improve multiple playback equipments it
Between playing audio-fequency data synchronism.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those skilled in the art, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the flow diagram for the control method for playing back that the embodiment of the present invention one provides.
Fig. 2 is the composition schematic diagram of the play system in the embodiment of the present invention two.
Fig. 3 is the flow diagram of control method for playing back provided by Embodiment 2 of the present invention.
Fig. 4 is the structural schematic diagram for the first broadcast control device that the embodiment of the present invention three provides.
Fig. 5 is the structural schematic diagram for second of broadcast control device that the embodiment of the present invention three provides.
Fig. 6 is the structural schematic diagram for the third broadcast control device that the embodiment of the present invention three provides.
Fig. 7 is the structural schematic diagram for the first terminal that the embodiment of the present invention four provides.
Fig. 8 is the structural schematic diagram for second of terminal that the embodiment of the present invention four provides.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other implementation that those skilled in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Term " first ", " second ", " third " in description and claims of this specification and above-mentioned attached drawing etc.
(if present) is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that this
The object of sample description can be interchanged in the appropriate case.In addition, term " comprising " and " having " and their any deformation, meaning
Figure, which is to cover, non-exclusive includes.For example, containing the process of series of steps, method or containing a series of modules or list
The device of member, terminal, system those of are not necessarily limited to clearly to list step or module or unit, can also include unclear
The step of ground is listed or module or unit can also include for intrinsic its of these processes, method, apparatus, terminal or system
Its step or module or unit.
A kind of control method for playing back of offer of the embodiment of the present invention, device, terminal and play system will carry out detailed respectively below
It describes in detail bright.
Embodiment one
The present embodiment will be described from the angle of broadcast control device, which can specifically integrate in the terminal, should
Terminal can be the equipment such as smart mobile phone, tablet computer.
A kind of control method for playing back, including：Audio data is split into multiple packets of audio data, is wrapped in the packets of audio data
It includes and stabs at the first time；Obtain the clocking error of playback equipment；According to the clocking error change in the packets of audio data this first
Timestamp, to obtain modified packets of audio data；The modified packets of audio data is sent to the playback equipment.
As shown in Figure 1, the control method for playing back, detailed process may include：
Audio data is split into multiple packets of audio data by S101, which includes stabbing at the first time.
In concrete application, broadcast control device can transfer the audio number being stored in the memory of the broadcast control device
According to.Broadcast control device can also obtain audio data by wired or wireless network from server or other-end.It plays
Control device can also obtain audio data from the storage mediums such as CD.The audio data includes but is not limited to CD, WAV, MP3
The formats such as (Moving Picture Experts Group Audio Layer III), WMA (Windows Media Audio)
Audio data.The broadcast control device can be integrated in the electronic device in terminal, can also be with data processing work(
The playback equipment of energy.
After getting audio data, which is split into multiple packets of audio data by broadcast control device.It splits into
When multiple packets of audio data, which can be added in each packets of audio data split out plays the audio number
It is stabbed according to the first time of packet.First time stamp can be that one still determined by system clock according to the broadcast control device
The time point not reached.
S102 obtains the clocking error of playback equipment.
Specifically, broadcast control device obtains the clocking error of playback equipment.The playback equipment can be that speaker, music are broadcast
Putting device etc. has the equipment of audio playing function.The playback equipment has independent system clock.The clocking error is the broadcasting
Time difference between the system clock of equipment and the system clock of the broadcast control device.
In some embodiments, following steps can be specifically included by obtaining the clocking error of playback equipment：
Preset audio data packet is sent to playback equipment, which includes the second timestamp；
The feedback information of the playback equipment is received, which is that the playback equipment is played according to second timestamp
Feedack after the preset audio data packet；
The clocking error of the playback equipment is obtained according to the feedback information.
Specifically, broadcast control device sends preset audio data packet to playback equipment.The preset audio data packet can be with
It is the section audio data being stored in advance in the memory of broadcast control device.The broadcast control device is sent out to the playback equipment
When giving the preset audio data packet, the preset audio data packet is transferred from the memory of the broadcast control device, then to this
The second timestamp is added in preset audio data packet.Second timestamp can be the system clock according to the broadcast control device
An identified time point not yet reached.
In practical application, there may be the subtle time differences between the playback equipment and the broadcast control device, therefore should
The system clock of playback equipment and the system clock of the broadcast control device are not always identical.The playback equipment receives this
After the preset audio data packet that broadcast control device is sent, when the system clock of the playback equipment reaches second timestamp,
Play the preset audio data packet.In concrete application, since the preset audio data packet is preset section audio data, not
It is the required audio data of user, therefore when the playback equipment plays the preset audio data packet, can sound only be preset to this
Frequency data packet executes the actions such as decoding, digital-to-analogue conversion, signal amplification, without exporting amplified signal by output interface,
Sound is not exported by loud speaker.After playing the preset audio data packet, which sends to the broadcast control device
Feedback information.The feedback information indicates that the playback equipment played the preset audio data packet.The broadcast control device receives
The feedback information that the playback equipment is sent.Then, the broadcast control device according to the feedback information obtain the playback equipment when
Clock error.
In some embodiments, which has predetermined time period, and being obtained according to the feedback information should
The clocking error of playback equipment can specifically include following steps：
The playback equipment, which is obtained, according to second timestamp and the predetermined time period plays the preset audio data packet
The theoretical deadline；
The actual finish time that the playback equipment plays the preset audio data packet is obtained according to the feedback information；
The clocking error of the playback equipment is obtained according to the theory deadline and the actual finish time.
Specifically, which is the duration consumed required for playing the preset audio data packet.For example, this is pre-
If time span is 500 milliseconds.In practical application, which can add the preset time by second timestamp
Length is as the theory deadline.For example, at the time of the second timestamp label for 1 point 10 seconds, predetermined time period be 500 milli
Second, then the theory deadline for 1 point 10.5 seconds.
The broadcast control device can be recorded in the feedback information for receiving the playback equipment and receive the feedback information
Time.Due to being communicated by cable network or wireless network between broadcast control device and playback equipment, feedback information
It is transmitted in the form of electric signal (voltage or electric current) or electromagnetic wave.And the transmission speed of electric signal and electromagnetic wave is quickly, electricity
The passing time of signal or electromagnetic wave between broadcast control device and playback equipment can be ignored.It is therefore contemplated that
The time that the broadcast control device receives the feedback information is the reality that the playback equipment plays the preset audio data packet
The border deadline.
Then, the clocking error of the playback equipment can be obtained according to the theory deadline and the actual finish time.
Specifically, the clocking error can be calculated according to following formula：
t0=t1-t2
Wherein, t0For the clocking error that need to be calculated, t1For the theory deadline, t2For the actual finish time.Work as clock
Error t0For positive value, i.e., when the theoretical deadline is ahead of actual finish time, indicate the system clock of playback equipment than playing
The system clock of control device is slow；As clocking error t0For negative value, i.e., the theoretical deadline is delayed when actual finish time, table
Show that the system clock of playback equipment is faster than the system clock of broadcast control device；As clocking error t0When being 0, playback equipment is indicated
System clock it is identical as the system clock of broadcast control device, i.e., there is no clock mistake between playback equipment and broadcast control device
Difference.
S103 changes the stamp of the first time in the packets of audio data, to obtain modified sound according to the clocking error
Frequency data packet.
In concrete application, after getting the clocking error of the playback equipment, which is changed according to the clocking error
This in packet stabs at the first time, to obtain modified packets of audio data.
In some embodiments, changing the stamp of the first time in the packets of audio data according to the clocking error can be specific
Include the following steps：
According to this, stamp and the clocking error obtain third timestamp at the first time；
First time stamp is revised as the third timestamp.
Specifically, after getting the clocking error of the playback equipment, according to this, stamp and the clocking error obtain at the first time
Third timestamp.After getting the third timestamp, first time stamp is revised as the third timestamp.The modified sound
Frequency data packet includes the third timestamp.The third timestamp is the reproduction time of the modified packets of audio data.According to this
Stamp and the clocking error, which obtain third timestamp, at the first time can specifically include following steps：
First time stamp is calculated to reduce after the clocking error at the time of correspond to；
Set the moment to third timestamp.
Specifically, the moment can be calculated according to following formula：
T=t3-t0
Wherein, at the time of T is corresponds to after this at the first time the stamp reduction clocking error, t3It is stabbed at the first time for this, t0For this
Clocking error.For example, stabbing t at the first time3At the time of label for 2 points 10 seconds, clocking error t0Be 2 seconds, then calculated moment T
For 2 points 8 seconds.After calculating moment T, it sets moment T to third timestamp.
S104 sends the modified packets of audio data to the playback equipment.
In concrete application, after obtaining modified packets of audio data, broadcast control device sends this to the playback equipment and repaiies
Packets of audio data after changing.After the playback equipment receives the modified packets of audio data of broadcast control device transmission,
When the system clock of the playback equipment reaches the third timestamp, the modified packets of audio data is played.
It is carried out since broadcast control device stabs the first time in packets of audio data according to the clocking error of playback equipment
Modification, the third timestamp be this stamp is reduced at the time of correspond to after the clocking error at the first time.When the system of playback equipment
When the system clock of clock ratio broadcast control device is fast, which is negative value, at this time the third timestamp be ahead of this
One timestamp.Playback equipment plays the modified packets of audio data when own system clock reaches the third timestamp, this
When broadcast control device system clock at the time of be that this stabs corresponding at the first time.When the system clock of playback equipment is controlled than playing
When the system clock of device processed is slow, which is positive value, and the third timestamp is delayed at this time stabs in the first time.It plays
Equipment plays the modified packets of audio data when own system clock reaches the third timestamp, plays control dress at this time
At the time of the system clock set remains as first time stamp correspondence.
Therefore, when multiple playback equipments play simultaneously, multiple playback equipment plays identical modified audio number
It is identical according to the real time of packet, at the time of all stabbing corresponding at the first time for this in the system clock of the broadcast control device.Cause
This, it is ensured that it realizes and is played simultaneously between multiple playback equipment.
When it is implemented, the present invention is not limited by the execution sequence of described each step, conflict is not being generated
In the case of, certain steps can also use other sequences to carry out or be carried out at the same time.
From the foregoing, it will be observed that control method for playing back provided in an embodiment of the present invention, multiple audios are split into using by audio data
Data packet, the packets of audio data include stabbing at the first time；Obtain the clocking error of playback equipment；It is changed according to the clocking error
This in the packets of audio data stabs at the first time, to obtain modified packets of audio data；The modification is sent to the playback equipment
Packets of audio data afterwards.The program is according to the clocking error of playback equipment to the stamp progress at the first time in the packets of audio data
Modification, is sent to playback equipment, which plays the modified packets of audio data by modified packets of audio data
Real time is that this stabs the corresponding time at the first time.When multiple playback equipments play simultaneously, multiple playback equipment plays
It can keep being played simultaneously between the time of identical packets of audio data is identical namely multiple playback equipment, relative to existing
For technology, the synchronism of playing audio-fequency data between multiple playback equipments can be improved.
Embodiment two
According to control method for playing back described in embodiment one, citing is described in further detail below.
In the present embodiment, it will be specifically integrated in smart mobile phone with broadcast control device, and be based on broadcasting shown in Fig. 2
The control method for playing back of the present embodiment is described in detail in system.
As shown in Fig. 2, for a kind of composition schematic diagram of play system in the present embodiment.Play system by server 211,
Smart mobile phone 212 and multiple playback equipments 213 form.Server 211 can be the server being located on network.Playback equipment
213 can be the equipment that speaker, music player etc. have audio playing function.Smart mobile phone 212 passes through internet and service
Device 211 is into row data communication, so that smart mobile phone 212 can obtain audio data from server 211.Meanwhile smart mobile phone
212 by wireless network (such as WiFi) and multiple playback equipments 213 into row data communication so that smart mobile phone 212 can be with
Packets of audio data is sent to playback equipment 213.
As shown in figure 3, control method for playing back, detailed process can be as follows：
Audio data is split into multiple packets of audio data by S201, which includes stabbing at the first time.
Specifically, smart mobile phone can obtain audio data by internet from server.The audio data includes but not
It is limited to CD, WAV, MP3 (Moving Picture Experts Group Audio Layer III), WMA (Windows
Media Audio) etc. formats audio data.After getting audio data, smart mobile phone splits into the audio data multiple
Packets of audio data.When splitting into multiple packets of audio data, which can add in each packets of audio data split out
Enter to play the first time stamp of the packets of audio data.First time stamp can be true according to the system clock institute of the smart mobile phone
A fixed time point not yet reached.
S202 sends preset audio data packet to playback equipment, which includes the second timestamp.
Specifically, smart mobile phone sends preset audio data packet by wireless network (such as WiFi) to playback equipment.It should
Preset audio data packet can be the section audio data being stored in advance in the memory of smart mobile phone.The smart mobile phone to this
When playback equipment sends the preset audio data packet, the preset audio data packet is transferred from the memory of the smart mobile phone, so
The second timestamp is added in the backward preset audio data packet.When second timestamp can be the system according to the smart mobile phone
A time point not yet reached determined by clock.Second timestamp is the reproduction time of the preset audio data packet.
S203 receives the feedback information of the playback equipment, which is the playback equipment according to second timestamp
Play feedack after the preset audio data packet.
Specifically, after playback equipment receives the preset audio data packet that smart mobile phone is sent, what it is in the playback equipment is
When system clock reaches second timestamp, the preset audio data packet is played.After playing the preset audio data packet, the broadcasting
Equipment sends feedback information to the smart mobile phone.The feedback information indicates that the playback equipment played the preset audio data
Packet.The smart mobile phone receives the feedback information of playback equipment transmission.
It is not required for user since the preset audio data packet is preset section audio data in practical application
Audio data, therefore when the playback equipment plays the preset audio data packet, only the preset audio data packet can be executed
The actions such as decoding, digital-to-analogue conversion, signal amplification also do not pass through loud speaker without exporting amplified signal by output interface
Export sound.
S204 obtains the playback equipment according to second timestamp and predetermined time period and plays the preset audio data
The theoretical deadline of packet.
Specifically, which has predetermined time period.The predetermined time period is to play the default sound
The duration consumed required for frequency data packet.For example, the predetermined time period is 500 milliseconds.In practical application, smart mobile phone can be with
Using second timestamp plus the predetermined time period as the theory deadline.For example, at the time of the second timestamp label
For 1 point 10 seconds, predetermined time period be 500 milliseconds, then the theory deadline for 1 point 10.5 seconds.
S205 obtains the playback equipment according to the feedback information and plays when actually accomplishing of the preset audio data packet
Between.
Specifically, smart mobile phone can be recorded in the feedback information for receiving the playback equipment and receive the feedback letter
The time of breath.Due to being communicated by wireless network (such as WiFi) between smart mobile phone and playback equipment, feedback information with
The form of electromagnetic wave is transmitted.And the transmission speed of electromagnetic wave is quickly, electromagnetic wave is between smart mobile phone and playback equipment
Passing time can be ignored.It is therefore contemplated that the time that the smart mobile phone receives the feedback information is the broadcasting
The actual finish time of the complete preset audio data packet of device plays.
S206 obtains the clocking error of the playback equipment according to the theory deadline and the actual finish time.
Specifically, the clocking error can be calculated according to following formula：
t0=t1-t2
Wherein, t0For the clocking error that need to be calculated, t1For the theory deadline, t2For the actual finish time.Work as clock
Error t0For positive value, i.e., when the theoretical deadline is ahead of actual finish time, indicate the system clock of playback equipment than intelligence
The system clock of mobile phone is slow；As clocking error t0For negative value, i.e., the theoretical deadline is delayed when actual finish time, indicates to broadcast
The system clock for putting equipment is faster than the system clock of smart mobile phone；As clocking error t0When being 0, when indicating the system of playback equipment
Clock is identical as the system clock of smart mobile phone, i.e., does not have clocking error between playback equipment and smart mobile phone.
S207 calculates first time stamp and reduces after the clocking error at the time of correspond to.
Specifically, the moment can be calculated according to following formula：
T=t3-t0
Wherein, at the time of T is corresponds to after this at the first time the stamp reduction clocking error, t3It is stabbed at the first time for this, t0For this
Clocking error.For example, stabbing t at the first time3At the time of label for 2 points 10 seconds, clocking error t0Be 2 seconds, then calculated moment T
For 2 points 8 seconds.
S208 sets the moment to third timestamp.
Specifically, after calculating moment T, moment T is set to third timestamp.
First time stamp is revised as the third timestamp, to obtain modified packets of audio data by S209.
Specifically, after getting the third timestamp, by the first time stamp in the packets of audio data be revised as this
Three timestamps, to obtain modified packets of audio data.The modified packets of audio data includes the third timestamp.The third
Timestamp is the reproduction time of the modified packets of audio data.
S210 sends the modified packets of audio data to the playback equipment.
Specifically, after obtaining modified packets of audio data, smart mobile phone sends the modified sound to the playback equipment
Frequency data packet.After the playback equipment receives the modified packets of audio data of smart mobile phone transmission, in the playback equipment
System clock when reaching the third timestamp, play the modified packets of audio data.
Since smart mobile phone repaiies the first time stamp in packets of audio data according to the clocking error of playback equipment
Change, at the time of the third timestamp is corresponds to after this at the first time the stamp reduction clocking error.When the system clock of playback equipment
When faster than the system clock of smart mobile phone, which is negative value, and the third timestamp is ahead of first time stamp at this time.
Playback equipment plays the modified packets of audio data when own system clock reaches the third timestamp, at this time intelligent hand
At the time of the system clock of machine is that this stabs corresponding at the first time.When playback equipment system clock than smart mobile phone system clock
When slow, which is positive value, and the third timestamp is delayed at this time stabs in the first time.Playback equipment is in own system
When clock reaches the third timestamp, the modified packets of audio data is played, the system clock of smart mobile phone remains as this at this time
At the time of stabbing corresponding at the first time.
Therefore, when multiple playback equipments play simultaneously, multiple playback equipment plays identical modified audio number
It is identical according to the real time of packet, at the time of all stabbing corresponding at the first time for this in the system clock of the smart mobile phone.Therefore, may be used
It is played simultaneously with ensureing to realize between multiple playback equipment.
When it is implemented, the present invention is not limited by the execution sequence of described each step, conflict is not being generated
In the case of, certain steps can also use other sequences to carry out or be carried out at the same time.
From the foregoing, it will be observed that control method for playing back provided in an embodiment of the present invention, multiple audios are split into using by audio data
Data packet, the packets of audio data include stabbing at the first time；Preset audio data packet is sent to playback equipment；It is set according to the broadcasting
The standby theoretical deadline for playing the preset audio data packet and actual finish time obtain the clocking error of the playback equipment；
The stamp of the first time in the packets of audio data is changed according to the clocking error；Modified audio data is sent to playback equipment
Packet, which includes third timestamp.The program is according to the clocking error of playback equipment to the audio
First time stamp in data packet is modified, and modified packets of audio data is sent to playback equipment, the playback equipment
The real time for playing the modified packets of audio data is that this stabs the corresponding time at the first time.When multiple playback equipments simultaneously
When broadcasting, multiple playback equipment plays the energy between time is identical namely multiple playback equipment of identical packets of audio data
It is enough to keep being played simultaneously, in terms of existing technologies, the synchronization of playing audio-fequency data between multiple playback equipments can be improved
Property.
Embodiment three
In order to preferably implement above method, the embodiment of the present invention also provides a kind of broadcast control device, which can be with
It integrates in the terminal, which can be the equipment such as smart mobile phone, tablet computer.
As shown in figure 4, broadcast control device 300 may include：Split module 301, acquisition module 302, modified module
303, sending module 304 are described in detail below：
The fractionation module 301, for audio data to be split into multiple packets of audio data, which includes
One timestamp；
The acquisition module 302, the clocking error for obtaining playback equipment；
The modified module 303, for changing the stamp of the first time in the packets of audio data according to the clocking error, with
To modified packets of audio data；
The sending module 304, for sending the modified packets of audio data to the playback equipment.
Preferably, which is additionally operable to：
Preset audio data packet is sent to playback equipment, which includes the second timestamp；
As shown in figure 5, the acquisition module 302 includes：Receiving submodule 3021, the first acquisition submodule 3022, specifically such as
Under：
The receiving submodule 3021, the feedback information for receiving the playback equipment, the feedback information are the playback equipment
Feedack after the preset audio data packet is played according to second timestamp；
First acquisition submodule 3022, the clocking error for obtaining the playback equipment according to the feedback information.
Preferably, which there is predetermined time period, first acquisition submodule 3022 to be specifically used for：
The playback equipment, which is obtained, according to second timestamp and the predetermined time period plays the preset audio data packet
The theoretical deadline；
The actual finish time that the playback equipment plays the preset audio data packet is obtained according to the feedback information；
The clocking error of the playback equipment is obtained according to the theory deadline and the actual finish time.
Preferably, as shown in fig. 6, the modified module 303 includes：Second acquisition submodule 3031, modification submodule 3032,
It is specific as follows：
Second acquisition submodule 3031, for stamp and the clocking error to obtain third timestamp at the first time according to this；
The modification submodule, for first time stamp to be revised as the third timestamp.
Preferably, which is specifically used for：
First time stamp is calculated to reduce after the clocking error at the time of correspond to；
Set the moment to third timestamp.
When it is implemented, the above modules can be realized as independent entity, arbitrary combination can also be carried out, is made
It is realized for same or several entities.The specific implementation of the above modules can be found in the embodiment of the method for front, herein not
It repeats again.
From the foregoing, it will be observed that broadcast control device 300 provided in an embodiment of the present invention, by splitting module 301 by audio data
Multiple packets of audio data are split into, which includes stabbing at the first time；Acquisition module 302 obtain playback equipment when
Clock error；Modified module 303 changes the stamp of the first time in the packets of audio data according to the clocking error, after obtaining modification
Packets of audio data；Sending module 304 sends the modified packets of audio data to the playback equipment.The program is set according to broadcasting
Standby clocking error modifies to the first time stamp in the packets of audio data, and modified packets of audio data is sent to
Playback equipment, when the real time which plays the modified packets of audio data is that this stabs corresponding at the first time
Between.When multiple playback equipments play simultaneously, the time that multiple playback equipment plays identical packets of audio data is identical, namely
Can keep being played simultaneously between multiple playback equipment, in terms of existing technologies, can improve multiple playback equipments it
Between playing audio-fequency data synchronism.
Example IV
The embodiment of the present invention also provides a kind of terminal, which can be the equipment such as smart mobile phone, tablet computer.
As shown in fig. 7, terminal 400 may include：It splits module 401, acquisition module 402, modified module 403, send mould
Block 404, is described in detail below：
The fractionation module 401, for audio data to be split into multiple packets of audio data, which includes
One timestamp；
The acquisition module 402, the clocking error for obtaining playback equipment；
The modified module 403, for changing the stamp of the first time in the packets of audio data according to the clocking error, with
To modified packets of audio data；
The sending module 404, for sending the modified packets of audio data to the playback equipment.
Preferably, which is additionally operable to：
Preset audio data packet is sent to playback equipment, which includes the second timestamp；
The acquisition module 402 includes：Receiving submodule, the first acquisition submodule, it is specific as follows：
The receiving submodule, the feedback information for receiving the playback equipment, the feedback information be the playback equipment according to
Second timestamp plays feedack after the preset audio data packet；
First acquisition submodule, the clocking error for obtaining the playback equipment according to the feedback information.
Preferably, which there is predetermined time period, first acquisition submodule to be specifically used for：
The playback equipment, which is obtained, according to second timestamp and the predetermined time period plays the preset audio data packet
The theoretical deadline；
The actual finish time that the playback equipment plays the preset audio data packet is obtained according to the feedback information；
The clocking error of the playback equipment is obtained according to the theory deadline and the actual finish time.
Preferably, which includes：Second acquisition submodule, modification submodule, it is specific as follows：
Second acquisition submodule, for stamp and the clocking error to obtain third timestamp at the first time according to this；
The modification submodule, for first time stamp to be revised as the third timestamp.
Preferably, which is specifically used for：
First time stamp is calculated to reduce after the clocking error at the time of correspond to；
Set the moment to third timestamp.
Aforesaid operations are for details, reference can be made to the embodiment of the method for front, and details are not described herein.
The embodiment of the present invention also provides another terminal, as shown in figure 8, the terminal 500 may include radio frequency (RF, Radio
Frequency) circuit 501, include one or more computer readable storage mediums memory 502, input unit
503, display unit 504, sensor 505, voicefrequency circuit 506, Wireless Fidelity (WiFi, Wireless Fidelity) module
507, include there are one or more than one processing core processor 508 and the components such as power supply 509.People in the art
Member it is appreciated that terminal structure not structure paired terminal shown in Fig. 8 restriction, may include more more or fewer than illustrating
Component either combines certain components or different components arrangement.
Radio circuit 501 can be used for receiving and sending messages or communication process in signal send and receive, particularly, by base station
Downlink information receive after, transfer to one or more than one processor 508 processing；In addition, the data for being related to uplink are sent
To base station.In general, radio circuit 501 includes but not limited to antenna, at least one amplifier, tuner, one or more oscillations
Device, subscriber identity module (SIM, Subscriber Identity Module) card, transceiver, coupler, low noise amplification
Device (LNA, Low Noise Amplifier), duplexer etc..In addition, radio circuit 501 can also by radio communication with network
It is communicated with other equipment.The wireless communication can use any communication standard or agreement, including but not limited to global system for mobile telecommunications
System (GSM, Global System of Mobile communication), general packet radio service (GPRS, General
Packet Radio Service), CDMA (CDMA, Code Division Multiple Access), wideband code division it is more
Location (WCDMA, Wideband Code Division Multiple Access), long term evolution (LTE, Long Term
Evolution), Email, short message service (SMS, Short Messaging Service) etc..
Memory 502 can be used for storing application program and data.Include that can hold in the application program that memory 502 stores
Line program code.Application program can form various functions module.Processor 508 is stored in answering for memory 502 by operation
With program, to perform various functions application and data processing.Memory 502 can include mainly storing program area and storage number
According to area, wherein storing program area can storage program area, (for example sound plays work(to the application program needed at least one function
Energy, image player function etc.) etc.；Storage data field can store according to terminal use created data (such as audio data,
Phone directory etc.) etc..In addition, memory 502 may include high-speed random access memory, can also include non-volatile memories
Device, for example, at least a disk memory, flush memory device or other volatile solid-state parts.Correspondingly, memory
502 can also include Memory Controller, to provide the access of processor 508 and input unit 503 to memory 502.
Input unit 503 can be used for receiving number, character information or the user's characteristic information (such as fingerprint) of input, and
Generate keyboard related with user setting and function control, mouse, operating lever, optics or the input of trace ball signal.Specifically
Ground, input unit 503 may include fingerprint recognition module.In some embodiments, input unit 503 can also include touch-sensitive table
Face.Touch sensitive surface, also referred to as touch screen or Trackpad collect user on it or neighbouring touch operation (such as user
Use the operation of any suitable object or attachment such as finger, stylus on touch sensitive surface or near touch sensitive surface), and according to
Preset formula drives corresponding attachment device.Optionally, touch sensitive surface may include touch detecting apparatus and touch control
Two parts of device.Wherein, the touch orientation of touch detecting apparatus detection user, and the signal that touch operation is brought is detected, it will believe
Number send touch controller to；Touch controller receives touch information from touch detecting apparatus, and is converted into contact seat
Mark, then gives processor 508, and can receive order that processor 508 is sent and be executed.Furthermore, it is possible to using resistance-type,
The multiple types such as condenser type, infrared ray and surface acoustic wave realize touch sensitive surface.In addition to touch sensitive surface, input unit 503 may be used also
To include other input equipments.Specifically, other input equipments can include but is not limited to physical keyboard, function key (such as sound
Measure control button, switch key etc.), it is trace ball, mouse, one or more in operating lever etc..
Display unit 504 can be used for showing information input by user or be supplied to user information and terminal it is various
Graphical user interface, these graphical user interface can be made of figure, text, icon, video and its arbitrary combination.Display
Unit 504 may include display panel.Optionally, may be used liquid crystal display (LCD, Liquid Crystal Display),
The forms such as Organic Light Emitting Diode (OLED, Organic Light-Emitting Diode) configure display panel.Further
, touch sensitive surface can cover display panel, when touch sensitive surface detects on it or after neighbouring touch operation, send processing to
Device 508 is followed by subsequent processing device 508 and is provided on a display panel accordingly according to the type of touch event to determine the type of touch event
Visual output.Although in fig. 8, touch sensitive surface and display panel are to realize input and input as two independent components
Function, but in some embodiments it is possible to touch sensitive surface and display panel are integrated and realizes and outputs and inputs function.
Terminal may also include at least one sensor 505, such as optical sensor, motion sensor and other sensors.
Specifically, optical sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can be according to ambient light
Light and shade adjust the brightness of display panel, proximity sensor can close display panel and/or the back of the body when terminal is moved in one's ear
Light.As a kind of motion sensor, gravity accelerometer can detect in all directions (generally three axis) acceleration
Size can detect that size and the direction of gravity when static, can be used to identify mobile phone posture application (such as horizontal/vertical screen switching,
Dependent game, magnetometer pose calibrating), Vibration identification correlation function (such as pedometer, tap) etc.；It can also configure as terminal
The other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, details are not described herein.
Voicefrequency circuit 506 can provide the audio interface between user and terminal by loud speaker, microphone.Voicefrequency circuit
The audio data received can be converted into electric signal by 506, be transferred to loud speaker, and voice signal output is converted to by loud speaker；
On the other hand, the voice signal of collection is converted to electric signal by microphone, and audio number is converted to after being received by voicefrequency circuit 506
According to then by after the processing of audio data output processor 508, through radio circuit 501 to be sent to such as another terminal, or by sound
Frequency is further processed according to output to memory 502.Voicefrequency circuit 506 is also possible that earphone jack, to provide peripheral hardware
The communication of earphone and terminal.
Wireless Fidelity (WiFi) belongs to short range wireless transmission technology, and terminal can be helped by wireless fidelity module 507
User sends and receive e-mail, browses webpage and access streaming video etc., it has provided wireless broadband internet to the user and has accessed.
Although Fig. 8 shows wireless fidelity module 507, but it is understood that, and it is not belonging to must be configured into for terminal, completely may be used
To be omitted in the range for the essence for not changing invention as needed.
Processor 508 is the control centre of terminal, using the various pieces of various interfaces and the entire terminal of connection, is led to
It crosses operation or executes the application program being stored in memory 502, and call the data being stored in memory 502, execute
The various functions and processing data of terminal, to carry out integral monitoring to terminal.Optionally, processor 508 may include one or
Multiple processing cores；Preferably, processor 508 can integrate application processor and modem processor, wherein application processor
Main processing operation system, user interface and application program etc., modem processor mainly handles wireless communication.It is appreciated that
, above-mentioned modem processor can not also be integrated into processor 508.
Terminal further includes the power supply 509 (such as battery) powered to all parts.Preferably, power supply can pass through power supply pipe
Reason system and processor 508 are logically contiguous, to realize management charging, electric discharge and power managed by power-supply management system
Etc. functions.Power supply 509 can also include one or more direct current or AC power, recharging system, power failure inspection
The random components such as slowdown monitoring circuit, power supply changeover device or inverter, power supply status indicator.
Although being not shown in Fig. 8, terminal can also include camera, bluetooth module etc., and details are not described herein.
Specifically in the present embodiment, the processor 508 in terminal can be according to following instruction, will be one or more
The corresponding executable program code of process of application program is loaded into memory 502, and is stored in by processor 508 to run
Application program in memory 502, to realize various functions：
Audio data is split into multiple packets of audio data, which includes stabbing at the first time；It obtains and plays
The clocking error of equipment；The stamp of the first time in the packets of audio data is changed according to the clocking error, it is modified to obtain
Packets of audio data；The modified packets of audio data is sent to the playback equipment.
Preferably, processor 508, which has, splits module, acquisition module, modified module, sending module, is described in detail below：
Processor 508 is used to that audio data to be split into multiple packets of audio data by splitting module, the packets of audio data
Include stabbing at the first time；
Processor 508 is used to obtain the clocking error of playback equipment by acquisition module；
Processor 508 according to the clocking error for changing the first time in the packets of audio data by modified module
Stamp, to obtain modified packets of audio data；
Processor 508 is used to send the modified packets of audio data to the playback equipment by sending module.
Aforesaid operations are for details, reference can be made to the embodiment of the method for front, and details are not described herein.
From the foregoing, it will be observed that an embodiment of the present invention provides a kind of terminal, by the way that audio data is split into multiple audio datas
Packet, the packets of audio data include stabbing at the first time；Obtain the clocking error of playback equipment；The sound is changed according to the clocking error
This in frequency data packet stabs at the first time, to obtain modified packets of audio data；It is modified that this is sent to the playback equipment
Packets of audio data.The program repaiies the first time stamp in the packets of audio data according to the clocking error of playback equipment
Change, modified packets of audio data is sent to playback equipment, which plays the reality of the modified packets of audio data
The border time is that this stabs the corresponding time at the first time.When multiple playback equipments play simultaneously, multiple playback equipment plays phase
With can keep being played simultaneously between the time of packets of audio data is identical namely multiple playback equipment, relative to existing skill
For art, the synchronism of playing audio-fequency data between multiple playback equipments can be improved.
It should be noted that one of ordinary skill in the art will appreciate that whole in the various methods of above-described embodiment or
Part steps are relevant hardware can be instructed to complete by program, which can be stored in computer-readable storage medium
In matter, storage medium may include：Read-only memory (ROM, Read Only Memory), random access memory (RAM,
Random Access Memory), disk or CD etc..
A kind of control method for playing back, device, terminal and play system is provided for the embodiments of the invention above to carry out
It is discussed in detail, principle and implementation of the present invention are described for specific case used herein, above example
Illustrate the method and its core concept for being merely used to help understand the present invention；Meanwhile for those skilled in the art, according to this
The thought of invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not answered
It is interpreted as limitation of the present invention.
Claims (11)
1. a kind of control method for playing back, which is characterized in that including：
Audio data is split into multiple packets of audio data, the packets of audio data includes stabbing at the first time；
Obtain the clocking error of playback equipment；
Third timestamp is obtained according to first time stamp and the clocking error；
First time stamp in the packets of audio data is revised as the third timestamp, to obtain modified audio
Data packet；
The modified packets of audio data is sent to the playback equipment.
2. control method for playing back according to claim 1, which is characterized in that the clocking error for obtaining playback equipment
Step specifically includes：
Preset audio data packet is sent to playback equipment, the preset audio data packet includes the second timestamp；
The feedback information of the playback equipment is received, the feedback information is that the playback equipment is broadcast according to second timestamp
Discharge feedack after the preset audio data packet；
The clocking error of the playback equipment is obtained according to the feedback information.
3. control method for playing back according to claim 2, which is characterized in that when the preset audio data packet has default
Between length, the step of clocking error that the playback equipment is obtained according to the feedback information specifically includes：
The playback equipment, which is obtained, according to second timestamp and the predetermined time period plays the preset audio number
According to the theoretical deadline of packet；
The actual finish time that the playback equipment plays the preset audio data packet is obtained according to the feedback information；
The clocking error of the playback equipment is obtained according to the theoretical deadline and the actual finish time.
4. control method for playing back according to claim 1, which is characterized in that described according to first time stamp and described
The step of clocking error acquisition third timestamp, specifically includes：
First time stamp is calculated to reduce at the time of correspond to after the clocking error；
Set the moment to third timestamp.
5. a kind of broadcast control device, which is characterized in that including：
Module is split, for audio data to be split into multiple packets of audio data, the packets of audio data includes at the first time
Stamp；
Acquisition module, the clocking error for obtaining playback equipment；
Modified module is used for：
Third timestamp is obtained according to first time stamp and the clocking error；
First time stamp in the packets of audio data is revised as the third timestamp, to obtain modified audio
Data packet；
Sending module, for sending the modified packets of audio data to the playback equipment.
6. broadcast control device according to claim 5, which is characterized in that the sending module is additionally operable to：
Preset audio data packet is sent to playback equipment, the preset audio data packet includes the second timestamp；
The acquisition module specifically includes：
Receiving submodule, the feedback information for receiving the playback equipment, the feedback information be the playback equipment according to
Second timestamp plays feedack after the preset audio data packet；
First acquisition submodule, the clocking error for obtaining the playback equipment according to the feedback information.
7. broadcast control device according to claim 6, which is characterized in that when the preset audio data packet has default
Between length, first acquisition submodule is specifically used for：
The playback equipment, which is obtained, according to second timestamp and the predetermined time period plays the preset audio number
According to the theoretical deadline of packet；
The actual finish time that the playback equipment plays the preset audio data packet is obtained according to the feedback information；
The clocking error of the playback equipment is obtained according to the theoretical deadline and the actual finish time.
8. broadcast control device according to claim 5, which is characterized in that according to first time stamp and the clock
When error obtains third timestamp, the modified module is specifically used for：
First time stamp is calculated to reduce at the time of correspond to after the clocking error；
Set the moment to third timestamp.
9. a kind of terminal, which is characterized in that including：
Touch screen, the touch operation for receiving user；
It is stored with the memory of executable program code；
The processor coupled with the memory；
The processor calls the executable program code stored in the memory, executes as appointed in Claims 1-4
Control method for playing back described in one.
10. a kind of play system, which is characterized in that including broadcast control device and at least one playback equipment, the broadcasting is set
Standby to be connect with the broadcast control device by network, the broadcast control device includes：
It is stored with the memory of executable program code；
The processor coupled with the memory；
The processor calls the executable program code stored in the memory, executes as appointed in Claims 1-4
Control method for playing back described in one.
11. a kind of storage medium, which is characterized in that computer program is stored in the storage medium, when the computer journey
When sequence is run on computers so that the computer perform claim requires 1 to 4 any one of them control method for playing back.
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| CN108271095A (en) * | 2017-12-20 | 2018-07-10 | 建荣半导体（深圳）有限公司 | A kind of major and minor Bluetooth audio equipment and its synchronous playing system and method |
| CN108495239B (en) * | 2018-01-17 | 2020-09-29 | 深圳聚点互动科技有限公司 | Method, device, equipment and storage medium for accurately and synchronously playing audio among multiple equipment |
| CN112135342A (en) * | 2019-06-25 | 2020-12-25 | 瑞昱半导体股份有限公司 | Audio playing system and method |
| CN112073791A (en) * | 2020-08-03 | 2020-12-11 | 上海商泰汽车信息系统有限公司 | Playing synchronization method and device, storage medium and user side |
| CN114416013A (en) * | 2022-01-04 | 2022-04-29 | 深圳Tcl新技术有限公司 | Data transmission method, data transmission device, electronic equipment and computer-readable storage medium |
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