CN105049904B - A kind of playing method and device of multimedia file - Google Patents

A kind of playing method and device of multimedia file Download PDF

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Publication number
CN105049904B
CN105049904B CN201510449528.1A CN201510449528A CN105049904B CN 105049904 B CN105049904 B CN 105049904B CN 201510449528 A CN201510449528 A CN 201510449528A CN 105049904 B CN105049904 B CN 105049904B
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China
Prior art keywords
file
information
multimedia file
player
multimedia
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CN201510449528.1A
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Chinese (zh)
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CN105049904A (en
Inventor
孙磊
王宏斌
刘相双
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Hisense Mobile Communications Technology Co Ltd
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Hisense Mobile Communications Technology Co Ltd
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/4408Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4621Controlling the complexity of the content stream or additional data, e.g. lowering the resolution or bit-rate of the video stream for a mobile client with a small screen

Abstract

The embodiment of the invention provides a kind of playing method and devices of multimedia file, this method comprises: searching the configuration file formerly generated for the multimedia file of multiple transport stream TS formats;The file sub-information of file total information and each multimedia file is read from the configuration file;The multimedia file of transport stream TS format described in player plays is called according to file total information and the file sub-information of each multimedia file.The embodiment of the present invention substantially increases the deblocking efficiency when playing, and avoids the Caton phenomenon in playing process.

Description

A kind of playing method and device of multimedia file
Technical field
The present invention relates to multimedia technical fields, more more particularly to the playback method and one kind of a kind of multimedia file The playing device of media file.
Background technique
With the rapid development of mobile communication technology, mobile communication terminal is each in the work of people, study, daily exchange etc. The utilization rate of aspect is also higher and higher, it may be said that mobile communication terminal is that people live indispensable a part.
Video recording is a common function of mobile communication terminal, since program (such as literature and art joint performance) records the process of video recording It is very long, and the format of most of memory (SD card) is FAT32 at present, the limitation of single file maximum storage is 4G, therefore, It is recorded it is generally necessary to be divided into multiple multimedia files.
Since the limitation of system generally requires the operation for stopping recording tool, then open again in multimedia file switching Dynamic recording tool, carries out the recording of new multimedia file.
Current mobile communication terminal, the multimedia file much recorded all are MPEG-4 formats, MPEG-4 format All data in file are incorporated into box, that is to say, that the file of MPEG-4 format is made of several box, and each box has Box can be interpreted as a data object block by type and length.
The media information and data of the file of MPEG-4 format are to separate storage, that is, want to have to solve before obtaining data It is precipitated all positions of each frame data, the file of MPEG-4 format stores being placed in this box of stbl of this frame information, And true data are placed in this box of mdat.
At the end of document recording, need to generate a header information in the file of MPEG-4 format, in case player is broadcast It puts used in file.
As it can be seen that the file structure of MPEG-4 format is complicated, so that deblocking of the multimedia file of MPEG-4 format in broadcasting It when dress, needs to take a long time, time delay is very big, the phenomenon that be easy to causeing Caton in continuous play.
Summary of the invention
In view of the above problems, the embodiment of the present invention is proposed in order to provide a kind of a kind of multimedia text for overcoming the above problem The playback method of part and a kind of corresponding playing device of multimedia file.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of playback methods of multimedia file, comprising:
Search the configuration file formerly generated for the multimedia file of multiple transport stream TS formats;
The file sub-information of file total information and each multimedia file is read from the configuration file;
Transport stream TS described in player plays is called according to file total information and the file sub-information of each multimedia file The multimedia file of format.
Preferably, the title of the multimedia file is configured with temporal information;
The file sub-information sorts according to temporal information, including calculated based on the temporal information duration information, road At least one of diameter information;
The file total information include add up each multimedia file duration information obtain total duration information, video name At least one of title, video pictures size.
Preferably, described to call player plays institute according to file total information and the file sub-information of each multimedia file The step of stating the multimedia file of transport stream TS format include:
At least partly file total information it will be sent to player and initialize;
When initialization operation is completed, the routing information of first multimedia file is sent to player, is broadcast with calling Device is put to play out from routing information reading multimedia file.
Preferably, at least partly file total information is sent to what player initialized by the playing controller Step includes:
Total duration information is sent to player, to generate playing progress bar;
And/or
Video name is sent to player to be shown;
And/or
By in video pictures size to player, to adjust the size of player.
Preferably, described to call player plays institute according to file total information and the file sub-information of each multimedia file The step of stating the multimedia file of transport stream TS format include:
When the message that the multimedia file for receiving player transmission finishes, by the road of next multimedia file Diameter information is sent to player, is played out with calling player to read multimedia file from the routing information.
Preferably, described to call player plays institute according to file total information and the file sub-information of each multimedia file The step of stating the multimedia file of transport stream TS format include:
Receive the positioning operation message that player is sent;It include being located in total duration information in the positioning operation message Positioning time point;
Search multimedia file belonging to the positioning time point;
Calculate the time offset of duration information of the positioning time point in affiliated multimedia file;
The routing information of the multimedia file and time offset are sent to player, to call player from described Routing information reads multimedia file, plays since the time offset.
Preferably, described to call player plays institute according to file total information and the file sub-information of each multimedia file The step of stating the multimedia file of transport stream TS format include:
Passage path information reads multimedia file;
Multimedia file is separated by transmission flow demultiplexing device MPEG2TSExtractor, obtains video data stream And voice data stream;
Video data frame is extracted from the video data stream by track of video mVideoTrack;
Audio data frame is extracted from the voice data stream by audio track mAudioTrack;
The video data frame is decoded by Video Decoder mVideoSource;
The audio data frame is decoded by audio decoder mAudioSource;
It is exported by video renderer mVideoRenderer by decoded video data frame;
Audio data frame after playing mAudioPlayer broadcast decoder by audio.
The embodiment of the invention also discloses a kind of playing device of multimedia file, described device include playing controller, Configuration file resolver and player:
Wherein, the playing controller includes:
Configuration file searching module is formerly matched for what the multimedia file of multiple transport stream TS formats generated for searching Set file;
Playing control module, for calling player according to the file sub-information of file total information and each multimedia file Play the multimedia file of the transport stream TS format;
The configuration file resolver includes:
Information reading submodule, for reading the text of file total information and each multimedia file from the configuration file Part sub-information.
Preferably, the title of the multimedia file is configured with temporal information;
The file sub-information sorts according to temporal information, including calculated based on the temporal information duration information, road At least one of diameter information;
The file total information include add up each multimedia file duration information obtain total duration information, video name At least one of title, video pictures size.
Preferably, the playing control module includes:
Initialization submodule, for that at least partly file total information will be sent to player and initialize;
Submodule is arranged in first broadcast source, is used for when initialization operation is completed, by the path of first multimedia file Information is sent to player, is played out with calling player to read multimedia file from the routing information.
Preferably, the initialization submodule includes:
Progress bar generation unit, for total duration information to be sent to player, to generate playing progress bar;
And/or
Video name display unit is shown for video name to be sent to player;
And/or
Player adjustment unit, for by video pictures size to player, to adjust the size of player 630.
Preferably, the playing control module includes:
Submodule is arranged in second broadcast source, the message for finishing in the multimedia file for receiving player transmission When, the routing information of next multimedia file is sent to player, to call player more from routing information reading Media file plays out.
Preferably, the playing control module includes:
Positioning operation message sink submodule, for receiving the positioning operation message for playing and sending;The positioning operation disappears It include the positioning time point in total duration information in breath;
File ownership searches submodule, for searching multimedia file belonging to the positioning time point;
Time offset computational submodule, for calculating duration of the positioning time point in affiliated multimedia file The time offset of information;
Submodule is arranged in third broadcast source, for the routing information of the multimedia file and time offset to be sent to Player, to call player to read multimedia file from the routing information, be played since the time offset.
Preferably, the player includes:
Multimedia file reading submodule reads multimedia file for passage path information;
File separation module, for being divided by transmission flow demultiplexing device MPEG2TSExtractor multimedia file From acquisition video data stream and voice data stream;
Video data frame extraction module, for being extracted from the video data stream by track of video mVideoTrack Video data frame;
Audio data frame read module, for being extracted from the voice data stream by audio track mAudioTrack Audio data frame;
Video decoding module, for being decoded by Video Decoder mVideoSource to the video data frame;
Audio decoder module, for being decoded by audio decoder mAudioSource to the audio data frame;
Video Output Modules, for being exported by video renderer mVideoRenderer by decoded video data Frame;
Audio playing module, for passing through the audio data frame after audio broadcasting mAudioPlayer broadcast decoder.
The embodiment of the present invention includes following advantages:
The embodiment of the present invention is believed by reading file of file total information and each multimedia file in configuration file Breath calls the multimedia file of the multiple transport stream TS formats of player plays, since transport stream TS format is simple, without complexity Decapsulation operation, substantially increases the deblocking efficiency when playing, avoids the Caton phenomenon in playing process.
Detailed description of the invention
Fig. 1 is a kind of step flow chart of the method for recording embodiment 1 of multimedia file of the invention;
Fig. 2 is a kind of step flow chart of the method for recording embodiment 2 of multimedia file of the invention;
Fig. 3 is a kind of step flow chart of the playback method embodiment 1 of multimedia file of the invention;
Fig. 4 is a kind of step flow chart of the playback method embodiment 2 of multimedia file of the invention;
Fig. 5 is a kind of structural block diagram of the record device embodiment of multimedia file of the invention
Fig. 6 is a kind of structural block diagram of the playing device embodiment of multimedia file of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real Applying mode, the present invention is described in further detail.
Referring to Fig.1, a kind of step flow chart of the method for recording embodiment 1 of multimedia file of the invention is shown, is had Body may include steps of:
Step 101, when receiving the recording request of multimedia file, parameter is recorded in setting;
It should be noted that the embodiment of the present invention can be applied to the mobile communication equipment with camera, for example, hand Machine, tablet computer, intelligent wearable device (such as smartwatch).
Certainly, the embodiment of the present invention can also be applied to other terminal devices, such as smart television, intelligent camera, The embodiments of the present invention are not limited thereto.
These mobile communication equipments can support WindowsPhone, Android (Android), IOS, Windows etc. mostly Operating system can usually run the application of recorded video, such as camera application, realize recording function.
In the concrete realization, the recording request of multimedia file can refer to what user was specified by camera application click The instruction record a video that control (such as video recording control) mode issues.
Make when receiving recording request, then recording parameter can be set.Wherein, recording parameter may include data source (DataSource), coded format, file output format;
Furthermore, file output format is set as transport stream TS format.
Several concepts that transport stream TS format is related to are introduced below:
ES (Elementary Stream): basic flow, the continuous bit stream of the audio not being segmented, video or other information.
PES (Packet Elemental Stream): basic flow ES is divided into section, and is packaged plus corresponding header file The elementary stream of formation.
TS (Transport Stream): transport stream, by one with common time base or independent time reference or Single data flow made of multiple PES combinations (compound).
Certainly, above-mentioned recording parameter is intended only as example, in implementing the embodiments of the present invention, can set according to the actual situation It sets other and records parameter, for example, resolution ratio, video frame rate, file output recording, etc., the embodiment of the present invention is not subject to this Limitation.In addition, those skilled in the art can also be joined using other recordings according to actual needs other than above-mentioned recording parameter Number, the embodiment of the present invention are also without restriction to this.
Step 102, multi-medium data is acquired by the data source;
When starting recorded video, original multi-medium data can be acquired by data source, for example, video data, sound Frequency evidence.
Step 103, the multi-medium data is encoded according to the coded format;
Multi-medium data is encoded, is referred to by specific compress technique, such as H.261, H.263, by some video The file of format is converted into the mode of another video format file.
Step 104, the multi-medium data after coding is encapsulated according to the transport stream TS format to the first multimedia text Part.
One of the characteristics of transport stream TS format is to require all to be independently to decode since any segment of video flowing 's.
Structurally, a series of transport stream packets that regular lengths are 188Bytes be may include in each transfer stream file (referred to as TS packet), the TS packet expanded can also include timestamp.
Each TS packet is made of the packet header of 4Bytes long and the load of 184Bytes thereafter, and the load of 184Bytes is to have With information space, for transmitting encoded video/audio data flow.
In one preferred embodiment of the invention, step 104 may include following sub-step:
Sub-step S11, the setup time information in the filename of the multimedia file.
The multimedia file of transport stream TS format is stream data, without special file header, be not otherwise able to satisfy from appoint When time starts decoded to require.
But this also brings another question, be exactly each segmentation multimedia file keep video length it is bad It calculates.
Therefore, in embodiments of the present invention, the setup time information in filename, to facilitate the multimedia file of segmentation Video length calculates.
Specifically, i.e., include temporal information in the composition of the filename of multimedia file.
In practical applications, temporal information may include encapsulate initial time (start encapsulate multimedia file when Between), encapsulation the deadline (i.e. complete encapsulation multimedia file time);
When starting to encapsulate multimedia file, in the filename of multimedia file, current time is configured to encapsulate Begin the time;
When completing to encapsulate multimedia file, in the filename of multimedia file, current time is configured to encapsulate At the time.
For example, some multimedia file starts to encapsulate in 01:00 on January 1st, 2015, then it at this time can be to multimedia text Part configuration file is entitled " videoclip1_201501010100.ts ", if the multimedia file is in 01:10 on January 1st, 2015 Start to encapsulate, then " videoclip1_201501010100_ can be revised as to the filename of multimedia file 201501010110.ts”。
Step 105, when first multimedia file is more than preset file size threshold value, by more matchmakers after coding Volume data is encapsulated according to the transport stream TS format to the second multimedia file.
In embodiments of the present invention, multimedia file can be divided according to file size threshold value, when document size reaches text When the upper limit of part size threshold value, the application of real-time informing recorded video, carries out the encapsulation of next multimedia file, until record System is completed.
That is a complete video, can record into multiple multimedia files.
The multi-medium data that the embodiment of the present invention acquires data source after coding, is packaged into multiple transport stream TS formats Multimedia file, without complicated encapsulation operation, greatly reduce time delay since transport stream TS format is simple, greatly improve Packaging efficiency when recording, avoids the Caton phenomenon in recording process, and the frame losing problem in switching is effectively relieved. In one preferred embodiment of the invention, this method can also include the following steps:
Step 106, when all multimedia files, which encapsulate, to be completed, configuration file is generated;
In embodiments of the present invention, a complete video can record into multiple multimedia files, the complete video It can be defined by the operation of user, e.g., receive recording request in the application of recorded video and terminate the request recorded Between the multimedia file that encapsulates be considered as a complete video.
All multimedia files (including first multimedia file, the second multimedia file) of one complete video are completed When encapsulation, corresponding configuration file is generated, can be XML (Extensible Markup Language, extensible markup language Speech) etc. formats, for controlling the broadcasting of multiple multimedia files.
It wherein, include the file sub-information of file total information and each multimedia file in the configuration file;
The file sub-information sorts according to temporal information, including calculated based on the temporal information duration information, road At least one of diameter information;
The file total information include add up each multimedia file duration information obtain total duration information, video name At least one of title, video pictures size.
The example of configuration file can be such that
Wherein, BaseInfos is file total information, i.e., the video information of entire video.
Name in BaseInfos is video name, i.e., the title of entire video can operate when recording It is named by user at interface;
Duration in BaseInfos is total duration information;
SegmentCount in BaseInfos is the quantity of multimedia file;
Width in BaseInfos is the width of video pictures, the height that High is video pictures, is provided commonly for table Levy video pictures size.
Segment is file sub-information, the i.e. video information of multimedia file.
Name in Segment is the filename of multimedia file;
Duration in Segment is the duration information of multimedia file;
FilePath in Segment is the routing information of multimedia file.
Referring to Fig. 2, a kind of step flow chart of the method for recording embodiment 2 of multimedia file of the invention is shown, it should Embodiment of the method can be applied in android system, and android system is a kind of freedom based on Linux and open-source generation Code operating system, can substantially be divided into four layers, be respectively from high level to low layer application layer (Applications), Application framework layer (Application Framework), system Runtime Library layer (Libraries) and Linux kernel central layer (Linux Kernel)。
This method embodiment can specifically include following steps:
Step 201, multi-media recording object MediaRecorder is created;
Android system be linux system on increase Java Virtual Machine Dalvik, and on Dalvik virtual machine The Application Framework of a JAVA is built, application program is the Application based on JAVA It is run on Framework, therefore, Application Framework can be substantially divided into Java layers and Native Layer.
In embodiments of the present invention, the application of recorded video can be in MediaRecorder pairs of one Java layers of creation As realizing recording and video recording.
Step 202, by the multi-media recording object MediaRecorder Object Creation multi-media recording Service Instance StageFrightRecorder;
MediaRecorder object is to record service in fact by the recording service module MPS creation of application framework layer Example --- StageFrightRecorder controls the recording of multimedia file.
Wherein, StagefrightRecorder is the entity object for recording operation of MPS creation.
Interprocess communication is realized by AIDL interface between the application and MPS of recorded video, for camera application and development Convenient, android system provides packaged help class.
It is realized such as the application of recorded video by MediaRecorder object and MediaRecorderClient and is handed over MPS Stream.
MediaRecorder object is to represent MPS inside the process space for the application for operating in recorded video, MediaRecorderClient operates in the application that recorded video is represented inside the multimedia server process space.
Step 203, it is arranged by the multi-media recording object MediaRecorder and records parameter;
Recording parameter may include data source, coded format, file output format, and this document output format is set as transmitting Flow TS format;
In the embodiment of the present invention, in order to realize transport stream TS format multimedia file recording, in operating system Java layers are extended.
Specifically, multi-media recording object MediaRecorder has transport stream TS in the Java layer of operating system The setting interface of format, multi-media recording object MediaRecorder can be set transport stream TS format by the setting interface It is set to output format.
Step 204, video data is acquired from camera by preset camera source class CameraSource;
In embodiments of the present invention, data source includes camera, and multi-medium data includes video data, then can pass through CameraSource acquires video data, such as yuv data from camera.
Step 205, audio data is acquired from microphone by preset audio-source class AudioSource.
In embodiments of the present invention, data source includes microphone, and multi-medium data includes audio data, then can pass through AudioSource acquires audio data, such as PCM data from microphone.
Step 206, encoder is created by the multi-media recording Service Instance StageFrightRecorder OMXCodec;
Step 207, the multi-medium data is encoded according to the coded format by the encoder OMXCodec;
The multi-medium data transmission process of recording is message-driven, and the message that data source generates multi-medium data is injected The message queue of OMXCodec.
OMXCodec detects that the message can call the read function of MediaSource to obtain video data, audio Data are encoded according to the coded format of setting, compressed video data, the data that audio data is various coded formats.
Step 208, preset is write into transport stream pair by the multi-media recording Service Instance StageFrightRecorder As synthesizer MediaWriter is arranged in MPEG2TSWriter;
Step 209, the multi-medium data is encapsulated as the transport stream TS format by the synthesizer MediaWriter Multimedia file.
In the embodiment of the present invention, in order to realize transport stream TS format multimedia file recording, in operating system Native layers are extended.
StagefringRecorder may determine that the file output format of setting is then created if it is transport stream TS format MPEG2TSWriter object is built as MediaWriter, by the video data compressed, audio data according to transport stream TS lattice Formula is written in multimedia file.
In addition to this, in order to meet transport stream TS format multimedia file storage, the embodiment of the present invention pair The function of MPEG2TSWriter is extended, and realizes document size detection function, to reach the text of setting in write-in data Control layer can be notified to do file handover operation when part size threshold value.
The output object of transport stream TS is network interface device in Android original design, and the embodiment of the present invention exists Increase MPEG2TSWriter object in StageFrightRecorder frame, provides the transport stream TS of local file system Write-in is supported, the generation of the multimedia file of transport stream TS format is realized.
Referring to Fig. 3, a kind of step flow chart of the playback method embodiment 1 of multimedia file of the invention is shown, is had Body may include steps of:
Step 301, the configuration file formerly generated for the multimedia file of multiple transport stream TS formats is searched;
In embodiments of the present invention, multiple multimedia file belongs to the same complete video, and it is more to be formerly directed to this A multimedia file generates configuration file.
In the concrete realization, multiple multimedia files are a complete video in interface display, when user passes through click It, can be complete according to this by playing controller VideoController when equal operations trigger the broadcasting of multiple multimedia file Video information (such as title) search formerly for multiple transport stream TS formats multimedia file generate configuration file.
Since configuration file is generally the formats such as XML, playing controller VideoController reads configuration text After part, configuration file resolver VideoListParser can be given and parsed.
Step 302, the file sub-information of file total information and each multimedia file is read from the configuration file;
Document parser VideoListParser (can belong to Java API to connect by inheriting the XML parsing class of Java Mouthful) and realize that the resolution logic of oneself is completed.
After document parser VideoListParser receives configuration file, configuration file can be parsed, be obtained The file sub-information of file total information and each multimedia file in configuration file.
Furthermore, document parser VideoListParser can first parse root node, obtain this complete view The file total information of frequency, then parses each byte point again, obtains file sub-information, and by the file sub-information after parsing It is put into a set and saves.
In the concrete realization, the title of multimedia file can be configured with temporal information;
File sub-information sorts according to temporal information, including calculated based on temporal information duration information, in routing information At least one;
File total information include add up each multimedia file duration information obtain total duration information, video name, At least one of video pictures size.
The data structure of file total information and the file sub-information of each multimedia file is with configuration file structure after parsing It is similar, playing controller VideoController is returned to by document parser VideoListParser.
Step 303, it is called described in player plays according to file total information and the file sub-information of each multimedia file The multimedia file of transport stream TS format.
In the concrete realization, playing controller VideoController calls player MyVideoView, will be corresponding File total information and file sub-information are sent to player MyVideoView, and control player MyVideoView plays corresponding Multimedia file.
Wherein, player MyVideoView can be realized with reference to android system play control VideoView, further For, it is that multimedia player MediaPlayer and surface window SurfaceView is realized.
In one preferred embodiment of the invention, step 303 may include following sub-step:
Sub-step S21 at least partly file total information will be sent to player and initialize;
In embodiments of the present invention, playing controller VideoController can send at least partly file total information To player MyVideoView, player MyVideoView can be initialized according to this document total information.
Such as, total duration information is sent to player MyVideoView by playing controller VideoController, to broadcast It puts device MyVideoView and generates corresponding playing progress bar in its UI (User Interface, user interface), prompt entire view The playback progress of frequency file;
And/or
For another example, video name is sent to player MyVideoView by playing controller VideoController, is played Device MyVideoView can be shown in its UI;
And/or
Playing controller VideoController, to player MyVideoView, will be broadcast in video pictures size with adjustment Put the size of device, the i.e. length and width of initialization initialization surface window SurfaceView.
The routing information of first multimedia file is sent to broadcasting when initialization operation is completed by sub-step S22 Device is played out with calling player to read multimedia file from the routing information.
After the completion of operation to be initiated, it is more than first that broadcast source, which can be set, in playing controller VideoController Media file.
Specifically, playing controller VideoController can call the setDatasource of MediaPlayer The routing information of first multimedia file is sent to player MyVideoView by method.
To the Surface, that is, the SurfaceView initialized for passing to MediaPlayer binding after video decoding (Surface has corresponded to one piece of screen buffer, and the corresponding Surface of each window, SurfaceView is to be drawn in On Surface), broadcasting starts.
In another preferred embodiment of the invention, step 303 may include following sub-step:
Sub-step S31, when the finishing event of multimedia file for receiving player transmission, by next more matchmakers The routing information of body file is sent to player, is broadcast with calling player to read multimedia file from the routing information It puts.
If current multimedia file finishes, player MyVideoView can send the event of finishing Oncomplete notifies that playing controller VideoController, playing controller VideoController, will according to sequence Positioned at next multimedia file of current multimedia file, broadcast source is set, carries out played in order.
In another preferred embodiment of the invention, step 303 may include following sub-step:
Sub-step S41 receives the positioning operation message that player is sent;It include when being located at total in the positioning operation message Positioning time point in long message;
Sub-step S42 searches multimedia file belonging to the positioning time point;
Sub-step S43 calculates the time migration of duration information of the positioning time point in affiliated multimedia file Amount;
The routing information of the multimedia file and time offset are sent to player by sub-step S44, are broadcast with calling Device is put to play from routing information reading multimedia file, since the time offset.
In embodiments of the present invention, user can by drag player MyVideoView UI in playing progress bar, Broadcast point is dragged into positioning time point delta, triggering positioning seek operation.
Player MyVideoView sends message informing playing controller when detecting positioning seek operation VideoController。
Playing controller VideoController is according to the positioning time point delta that operates of positioning seek and each Total duration information, i.e. confirmation positioning time point delta is the period for belonging to which multimedia file, by the multimedia file It is responsive to corresponding position.
For example, when recording, recorded three multimedia files, the duration information of the first two multimedia file is 10 points Clock, the duration information of third multimedia file are 5 minutes, i.e. total duration information is 25 minutes.
If it is the 21st minute that user, which positions the positioning time point that seek is operated, belong within the 21st minute the more matchmakers of third Body file is the 1st minute in the time offset of third multimedia file.
The embodiment of the present invention is believed by reading file of file total information and each multimedia file in configuration file Breath calls the multimedia file of the multiple transport stream TS formats of player plays, since transport stream TS format is simple, without complexity Decapsulation operation, substantially increases the deblocking efficiency when playing, avoids the Caton phenomenon in playing process.
Referring to Fig. 4, a kind of step flow chart of the playback method embodiment 2 of multimedia file of the invention is shown, is had Body may include steps of:
Step 401, passage path information reads multimedia file;
It, can be with if being provided with some multimedia file by setDataSource method is broadcast source DataSource Opening timing device queue, and (post) AsyncPrepare event is issued, it can be according to the path of the multimedia file Information reads multimedia file itself.
Step 402, multimedia file is separated by transmission flow demultiplexing device MPEG2TSExtractor, depending on Frequency data stream and voice data stream;
Demultiplexer MediaExtractor is created according to DataSource, carries out A/V (Audio/Video, video data Stream/voice data stream) separation.
Furthermore, sp<MediaExtractor>extractor=MediaExtractor: can be passed through: Create(dataSource);To realize the creation of MediaExtractor.
MediaExtractor::Create (dataSource) can create different data according to different data contents Reading object.
In embodiments of the present invention, in order to which the multimedia file to transport stream TS format carries out A/V separation, biography can be created Defeated stream demultiplexer MPEG2TSExtractor is MediaExtractor.
Step 403, video data frame is extracted from the video data stream by track of video mVideoTrack;
Step 404, audio data frame is extracted from the voice data stream by audio track mAudioTrack;
When AsyncPrepare event is triggered, finishSetDataSource_l can be called to create VideoTrack and AudioTrack.
FinishSetDataSource_l judges medium type, such as http, rtsp, or local text by URI prefix Part etc..URI can pass through
MVideoTrack and mAudioTrack respectively represents a track of video and audio track, for extracting video frame And audio frame.
MVideoTrack and mAudioTrack when onPrepareAsyncEvent event is triggered, by MediaExtractor is separated.
Step 405, the video data frame is decoded by Video Decoder mVideoSource;
Step 406, the audio data frame is decoded by audio decoder mAudioSource;
Step 407, it is exported by video renderer mVideoRenderer by decoded video data frame;
Step 408, the audio data frame after mAudioPlayer broadcast decoder is played by audio.
MVideoTrack and mAudioTrack can by call initVideoDecoder () and The two audio/video decoders of initAudioDecoder () Lai Shengcheng mVideoSource and mAudioSource.
MVideoSource may be considered the encapsulation of a Video Decoder, supply for generating video image MVideoRenderer rendering, the data source of mVideoSource are then provided by mVideoTrack.
MVideoSource formats the video decoded, and the format that Android is used is RGB565, concurrently Image Rendering is carried out to display module.
The data for reading a frame frame after mVideoSource decoding by the read method of mVideoSource, are put into In mVideoBuffer, video data is sent finally by render (mVideoBuffer) method of mVideoRenderer It is shown to display module.
MAudioSource is it is also assumed that be the encapsulation of an audio decoder, for generating video image confession MAudioPlayer is played, and the data source of mAudioPlayer is provided by mAudioTrack.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented Necessary to example.
Referring to Fig. 5, a kind of structural block diagram of the record device embodiment of multimedia file of the invention is shown, specifically may be used To include following module:
Parameter setting module 501 is recorded, when for receiving the recording request of multimedia file, parameter is recorded in setting, In, the recording parameter includes data source, coded format, file output format, and the file output format is set as transport stream TS format;
Multi-medium data acquisition module 502, for acquiring multi-medium data by the data source;
Multi-medium data coding module 503, for being encoded according to the coded format to the multi-medium data;
First multi-medium data package module 504, for the multi-medium data after encoding according to the transport stream TS Format is encapsulated to the first multimedia file;
Second multi-medium data package module 505, for judging that first multimedia file is more than preset file When size threshold value, the multi-medium data after coding is encapsulated according to the transport stream TS format to the second multimedia file.
In one preferred embodiment of the invention, the multi-medium data package module 504 may include following submodule Block:
Temporal information configures submodule, for the setup time information in the filename of the multimedia file.
In a preferred example of an embodiment of the present invention, the temporal information may include encapsulation initial time, encapsulation Deadline;
The temporal information configuration submodule may include such as lower unit:
Encapsulate initial time configuration unit, for start encapsulate multimedia file when, in the text of the multimedia file In part name, encapsulation initial time is configured by current time;
Deadline configuration unit is encapsulated, is used for when completing to encapsulate multimedia file, in the text of the multimedia file In part name, the encapsulation deadline is configured by current time.
In one preferred embodiment of the invention, which can also include following module:
Configuration file generation module, for generating configuration file when all multimedia files encapsulate completion;
It wherein, include the file sub-information of file total information and each multimedia file in the configuration file;
The file sub-information sorts according to temporal information, including calculated based on the temporal information duration information, road At least one of diameter information;
The file total information include add up each multimedia file duration information obtain total duration information, video name At least one of title, video pictures size.
In one preferred embodiment of the invention, which can also include following module:
Object Creation module is recorded, for creating multi-media recording object MediaRecorder;
Service Instance creation module is recorded, for more by the multi-media recording object MediaRecorder Object Creation Media record Service Instance StageFrightRecorder.
In one preferred embodiment of the invention, the recording parameter setting module 501 may include following submodule:
Submodule is arranged in object, records parameter for being arranged by the multi-media recording object MediaRecorder;
Wherein, in the Java layer of operating system, the multi-media recording object MediaRecorder has transport stream TS The setting interface of format.
In one preferred embodiment of the invention, the data source may include camera and/or microphone, described more Media data may include video data and/or audio data;
The multi-medium data acquisition module 502 may include following submodule:
Video data acquiring submodule is regarded for being acquired by preset camera source class CameraSource from camera Frequency evidence;
And/or
Audio data collecting submodule, for acquiring audio from microphone by preset audio-source class AudioSource Data.
In one preferred embodiment of the invention, the multi-medium data coding module 503 may include following submodule Block:
Encoder creates submodule, for being created by the multi-media recording Service Instance StageFrightRecorder Encoder OMXCodec;
Encoder encoding submodule is used for by the encoder OMXCodec according to the coded format to the multimedia Data are encoded.
In one preferred embodiment of the invention, the multi-medium data package module 504 may include following submodule Block:
Submodule is arranged in synthesizer, and being used for will be pre- by the multi-media recording Service Instance StageFrightRecorder That sets writes transmission flow object MPEG2TSWriter setting synthesizer MediaWriter;
Synthesizer encapsulates submodule, for the multi-medium data to be encapsulated as institute by the synthesizer MediaWriter State the first multimedia file of transport stream TS format.
Referring to Fig. 6, a kind of structural block diagram of the playing device embodiment of multimedia file of the invention, the device are shown It may include playing controller 610, configuration file resolver 620 and player 630;
Wherein, the playing controller 610 may include following module:
Configuration file searching module 611 is formerly generated for the multimedia file of multiple transport stream TS formats for searching Configuration file;
Playing control module 612 is broadcast for the file sub-information calling according to file total information and each multimedia file It puts device and broadcasts 630 multimedia files for putting the transport stream TS format;
The configuration file resolver 620 may include following module:
Information reading submodule 621, for reading file total information and each multimedia file from the configuration file File sub-information.
In the concrete realization, the title of the multimedia file is configured with temporal information;
The file sub-information sorts according to temporal information, including calculated based on the temporal information duration information, road At least one of diameter information;
The file total information include add up each multimedia file duration information obtain total duration information, video name At least one of title, video pictures size.
In one preferred embodiment of the invention, the playing control module 612 may include following submodule:
Initialization submodule, for that at least partly file total information will be sent to player 630 and initialize;
Submodule is arranged in first broadcast source, is used for when initialization operation is completed, by the path of first multimedia file Information is sent to player 630, is played out with calling player 630 to read multimedia file from the routing information.
In a kind of example of the embodiment of the present invention, the initialization submodule may include such as lower unit:
Progress bar generation unit, for total duration information to be sent to player 630, to generate playing progress bar;
And/or
Video name display unit is shown for video name to be sent to player 630;
And/or
Player adjustment unit, for by video pictures size to player 630, to adjust the size of player 630.
In another preferred embodiment of the invention, the playing control module 612 may include following submodule:
Submodule is arranged in second broadcast source, for what is finished in the multimedia file for receiving the transmission of player 630 When message, the routing information of next multimedia file is sent to player 630, to call player 630 from the path Information reads multimedia file and plays out.
In another preferred embodiment of the invention, the playing control module 612 may include following submodule:
Positioning operation message sink submodule, for receiving the positioning operation message of the transmission of player 630;The positional operand Make to include the positioning time point in total duration information in message;
File ownership searches submodule, for searching multimedia file belonging to the positioning time point;
Time offset computational submodule, for calculating duration of the positioning time point in affiliated multimedia file The time offset of information;
Submodule is arranged in third broadcast source, for the routing information of the multimedia file and time offset to be sent to Player 630, to call player 630 to read multimedia file from the routing information, be broadcast since the time offset It puts.
In one preferred embodiment of the invention, the player 630 may include following module:
Multimedia file reading submodule reads multimedia file for passage path information;
File separation module, for being divided by transmission flow demultiplexing device MPEG2TSExtractor multimedia file From acquisition video data stream and voice data stream;
Video data frame extraction module, for being extracted from the video data stream by track of video mVideoTrack Video data frame;
Audio data frame read module, for being extracted from the voice data stream by audio track mAudioTrack Audio data frame;
Video decoding module, for being decoded by Video Decoder mVideoSource to the video data frame;
Audio decoder module, for being decoded by audio decoder mAudioSource to the audio data frame;
Video Output Modules, for being exported by video renderer mVideoRenderer by decoded video data Frame;
Audio playing module, for passing through the audio data frame after audio broadcasting mAudioPlayer broadcast decoder.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
The broadcasting of the playback method and a kind of multimedia file of a kind of multimedia file provided by the present invention is filled above It sets, is described in detail, used herein a specific example illustrates the principle and implementation of the invention, above The explanation of embodiment is merely used to help understand method and its core concept of the invention;Meanwhile for the general skill of this field Art personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this Description should not be construed as limiting the invention.

Claims (10)

1. a kind of playback method of multimedia file characterized by comprising
Search the configuration file formerly generated for the multimedia file of multiple transport stream TS formats;Wherein, the configuration file For controlling the broadcasting of multiple multimedia files;
The file sub-information of file total information and each multimedia file is read from the configuration file;The file total information The total duration information and video name that duration information including each multimedia file that adds up obtains;The file sub-information according to Temporal information sequence in the title configuration of the multimedia file, including the duration information calculated based on the temporal information;
Transport stream TS format described in player plays is called according to file total information and the file sub-information of each multimedia file Multimedia file.
2. the method according to claim 1, wherein
The file sub-information further includes the routing information calculated based on the temporal information;
The file total information further include add up each multimedia file duration information obtain video pictures size.
3. method according to claim 1 or 2, which is characterized in that described according to file total information and each multimedia text The file sub-information of part calls the step of multimedia file of transport stream TS format described in player plays to include:
At least partly file total information it will be sent to player and initialize;
When initialization operation is completed, the routing information of first multimedia file is sent to player, to call player Multimedia file is read from the routing information to play out.
4. according to the method described in claim 3, it is characterized in that, the playing controller will at least partly file total information be sent out The step of the initializing is sent to player to include:
Total duration information is sent to player, to generate playing progress bar;
And/or
Video name is sent to player to be shown;
And/or
By in video pictures size to player, to adjust the size of player.
5. according to the method described in claim 2, it is characterized in that, described according to file total information and each multimedia file File sub-information call player plays described in transport stream TS format multimedia file the step of include:
When the message that the multimedia file for receiving player transmission finishes, the path of next multimedia file is believed Breath is sent to player, is played out with calling player to read multimedia file from the routing information.
6. according to the method described in claim 2, it is characterized in that, described according to file total information and each multimedia file File sub-information call player plays described in transport stream TS format multimedia file the step of include:
Receive the positioning operation message that player is sent;It include the positioning in total duration information in the positioning operation message Time point;
Search multimedia file belonging to the positioning time point;
Calculate the time offset of duration information of the positioning time point in affiliated multimedia file;
The routing information of the multimedia file and time offset are sent to player, to call player from the path Information reads multimedia file, plays since the time offset.
7. method described according to claim 1 or 2 or 4 or 5 or 6, which is characterized in that described according to file total information and each The file sub-information of multimedia file calls the step of multimedia file of transport stream TS format described in player plays to include:
Passage path information reads multimedia file;
Multimedia file is separated by transmission flow demultiplexing device MPEG2TSExtractor, obtains video data stream and sound Frequency data stream;
Video data frame is extracted from the video data stream by track of video mVideoTrack;
Audio data frame is extracted from the voice data stream by audio track mAudioTrack;
The video data frame is decoded by Video Decoder mVideoSource;
The audio data frame is decoded by audio decoder mAudioSource;
It is exported by video renderer mVideoRenderer by decoded video data frame;
Audio data frame after playing mAudioPlayer broadcast decoder by audio.
8. a kind of playing device of multimedia file, which is characterized in that described device includes playing controller, configuration file parsing Device and player:
Wherein, the playing controller includes:
Configuration file searching module, for searching the configuration formerly generated for the multimedia file of multiple transport stream TS formats text Part;Wherein, the configuration file is used to control the broadcasting of multiple multimedia files;
Playing control module, for calling player plays according to the file sub-information of file total information and each multimedia file The multimedia file of the transport stream TS format;The file total information includes that the add up duration information of each multimedia file obtains The total duration information and video name obtained;The file sub-information is believed according to the time in the title configuration of the multimedia file Breath sequence, including the duration information calculated based on the temporal information;
The configuration file resolver includes:
Information reading submodule, for reading file of file total information and each multimedia file from the configuration file Information.
9. device according to claim 8, which is characterized in that
The file sub-information further includes the routing information calculated based on the temporal information;
The file total information further include add up each multimedia file duration information obtain video pictures size.
10. device according to claim 8, which is characterized in that the playing control module includes:
Initialization submodule, for that at least partly file total information will be sent to player and initialize;
Submodule is arranged in first broadcast source, is used for when initialization operation is completed, by the routing information of first multimedia file It is sent to player, is played out with calling player to read multimedia file from the routing information.
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