CN111416988B - Control method for realizing multi-screen playing on set-top box based on IPTV network - Google Patents
Control method for realizing multi-screen playing on set-top box based on IPTV network Download PDFInfo
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- 230000006870 function Effects 0.000 claims description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/254—Management at additional data server, e.g. shopping server, rights management server
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing 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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
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- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention discloses a control method for realizing multi-screen playing on a set-top box based on an IPTV network, which comprises the following steps: when the server calls a playing interface to create a player, the browser distributes a native Id mark to the player; the playing control middleware creates corresponding playing channels for the player, and each playing channel is controlled by being associated with a native Id mark; the player control middleware distributes the playing type according to the playing source website: calling an ExoPlayer library to play based on streaming media transmitted by an HTTP protocol; and the live broadcast stream and the unicast stream transmitted by the non-HTTP protocol are played after network protocol analysis, Ts packet analysis, Ts injection decoding control and CTC injection decoding channel. The invention realizes IPTV network video source multi-screen playing on the intelligent set-top box, and realizes Dash and HLS protocol stream multi-screen playing in the middle of player control.
Description
Technical Field
The invention relates to the technical field of network set top box players, in particular to a control method for realizing multi-screen playing on a set top box based on an IPTV network.
Background
Based on the IPTV network, the server provides a response EPG interface requirement for each terminal to be connected for access, and the intelligent set-top box needs to integrate a browser and a corresponding player system for playing when accessing the IPTV network server. Each chip platform is based on a CTC module for encapsulating Ts data packet decoding by an audio and video decoder at the bottom layer of the chip, the decoding, the injection and the playing of the Ts data packet can be realized through the CTC module, and meanwhile, the chip platform is based on a Mediaplayer encapsulated by the audio and video decoder and can realize the network video source playing based on HTTP protocol transmission. With the upgrading of the Android system version, the system puts more strict requirements on the resource management of each partition, if the resources of the system and the vendor partition need to be called in one process, the vendor partition interface can be called after being packaged by the HAL interface definition language, otherwise, the calling fails. The MediaPlayer module is located in the system partition and the CTC module is located in the vendor partition. In view of this, the video window created after the Mediaplayer provided by some chip platforms starts playing cannot normally change the display position and size, cannot perform multi-screen display, and cannot simultaneously support the problems of Dash protocol stream playing, the subtitle parsing of WebVTT, and the HLS protocol stream playing.
Disclosure of Invention
The invention aims to provide a control method for realizing multi-screen playing on a set-top box based on an IPTV network, which is used for solving the problem that multi-screen display cannot be realized directly through a Surface created by a SDK (software development kit) on a chip bottom layer, and simultaneously, an Exoplayer library interface is used for realizing network video source playing of protocols such as HLS (hyper text transport protocol), Dash and the like so as to solve the problem that video sources of the protocols such as HLS, Dash and the like are not supported by the chip bottom layer.
The invention solves the problems through the following technical scheme:
a control method for realizing multi-screen playing on a set top box based on an IPTV network comprises the following steps:
step S1: when the server calls a playing interface to create a player, the browser distributes a native Id mark to the player; the playing control middleware creates corresponding playing channels for the player, and each playing channel is controlled by being associated with a native Id mark;
step S2: the player control middleware distributes the playing type according to the playing source website: calling an ExoPlayer library to play based on streaming media transmitted by an HTTP protocol; the live stream and the unicast stream transmitted by the non-HTTP protocol are played after network protocol analysis, Ts packet analysis, Ts injection decoding control and CTC injection decoding channels, and the playing APK distributes a corresponding Surface object to realize multi-screen playing.
The playing APK is packaged based on a browser library and an Exoplayer library, the playing client and the playing server are packaged based on AIDL, and the player control middleware comprises multi-channel playing channel management, multi-channel network data protocol analysis, multi-channel Ts packet analysis, multi-channel Ts injection decoding control and Exoplayer multi-channel control; the playing system is composed of the playing APK, the playing client, the playing server and the player control middleware and achieves playing of OTT live broadcast or OTT on-demand source transmitted through HLS and Dath protocol streaming HTTP; the method can also play IPTV live broadcast or IPTV on-demand source transmitted by IGMP, RTSP and RTP protocols, solve the problem that multi-screen display cannot be realized directly through the Surface created by the SDK of the chip bottom layer and solve the problem that the chip bottom layer does not support the playing of protocol video sources such as HLS, Dash and the like.
Further, the browser comprises a native ID generation module of a local player, and the browser creates a single-screen player, a PIP player or a multi-screen player by calling different player interfaces in a server EPG; when a player is created, the browser distributes the native Id and creates a player client object, the player client object and the native Id are associated and stored in an object management queue, and the native Id is transmitted through a public association part of the player client and a player server; the player server creates a player server object according to the acquired native Id mark, stores the native Id as a private value of the object, and associates the player client with the object of the player server and the native Id.
Further, when a single-screen player is created, the browser allocates a native Id of 0; when a PIP player is created, the browser allocates a native Id to be 1; and when a multi-screen player is created, the native Id takes a value within 2-255 circularly.
The player control middleware provides a set of interfaces with Ids for the player server to call. Each Id value corresponds to a playing channel, and the native Id is sent to the multi-path playing channel management as the Id when the player server calls the middleware interface. Determining the maximum playing channel number supported by the middleware according to the maximum decoding channel number supported by the bottom layer of the chip; the maximum number of playing channels corresponds to the number of multiple screens that can actually be played simultaneously. When the local player is created, the playing control middleware firstly queries the Id list according to the NativeId, if the Id list exists, releases the related playing resources to be created again and marks the playing resources with the NativeId.
Further, if the player control middleware judges that the playing is not the HTTP playing, a network protocol analysis channel, a Ts packet analysis channel, a Ts injection decoding control management channel and a CTC injection decoding channel are distributed to each playing channel, and independent receiving, analyzing and decoding functions are achieved.
Further, if the player control middleware judges that the player control middleware is a network source transmitted by an HTTP protocol, the Exoplayer control instruction is packaged and transmitted to the playing APK through the callback event module, and the playing APK analyzes the corresponding Exoplayer control instruction to obtain a playing path and starting time and then calls an interface of an Exoplayer library to start playing.
When the network resource of the HTTP is played, the Exoplayer multipath control of the player control middleware sends a play control instruction to an Exoplayer library in an instruction mode. All Exoplayer control instructions are transmitted to the playing APK through the callback event module in the HTTP _ PLAYCTRL callback type, and the playing APK analyzes and calls an Exoplayer library interface to realize network resource playing of the HTTP protocol.
Further, Exoplayer multiplexing needs to be format dependent
{ "EXPLAYERCMD" { "command": control instruction type "," instanceId ": native id, other parameter key value pair relevant to the type of the control command' }, encapsulates the play control command. And after the playing APK receives the HTTP _ PLAYCTRL callback event, analyzing the command to acquire the control command type and the native Id, and analyzing the related parameters at the same time. And when a start instruction is received, an Exoplayer local player is created, the native Id is associated to an available Surface, the Surface is associated to the Exoplayer local player to start playing, and instructions received in the later period are indexed to the corresponding Exoplayer local player by the native Id for management.
Further, the Exoplayerlibrary is used for analyzing media information (including audio and video PID information, subtitle information, abnormal playing, tail playing and the like), the media information encapsulates corresponding ExoplayerInfo instructions, the ExoplayerInfo instructions are delivered to a playing channel of a player control middleware through a JNI interface and stored as a native Id mark, and the injection format is { "ExoplayerInfo": { "InfoType": a "playing information type", "instanceId": native Id ", other parameter key value pairs relevant to the playing information type" }; and after receiving the ExoplayerInfo, the playing control middleware stores or directly reports the information to the server according to the playing information type and the native Id, and the server calls a player control middleware interface through the player client to acquire corresponding video source information analyzed by the local player.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the multi-screen playing control method can conveniently realize the multi-screen playing of the IPTV network video source on the intelligent set top box, and simultaneously controls the Exoplayer library to realize the multi-screen playing of the Dash and HLS protocol stream in the middle of the playing control through the control instruction and the callback mode.
Drawings
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
with reference to fig. 1, a control method for implementing multi-screen playing on a set-top box based on an IPTV network includes:
the server EPG calls an interface for creating a local single-screen player, the browser sets the native Id to zero and creates a player client object, a corresponding server object is created, and a server initialization interface is called to set the native Id. After obtaining the native Id, the player control middleware judges that the value is 0 and confirms that the player is created by the main screen player; if the player control middleware judges that the value is 1, the player is established by the PIP small screen player; if the value is greater than or equal to 2 and the channel is determined to be the first channel for multi-screen playing, all player channel resources need to be released and the multi-screen playing channel creation needs to be started. And the player control middleware acquires the index value of the currently available playing channel, creates a local playing channel and associates the native Id.
The server EPG calls the added program interface to set media information, the player controls the middleware to further create IPTV network resource playing when judging that the middleware is not HTTP protocol stream playing, and creates a network data downloading management thread, a Ts analysis thread, and a Ts data injection thread to realize data analysis and decoding of the playing channel. If the player control middleware judges the HTTP protocol, the format of the Exoplayer play starting instruction is encapsulated as follows,
{"EXPLAYERCMD":{"command":"Start","instanceId"：NativeId,
"url":"http://192.124.107.59/88888888/16/index.m3u8","startpos":20}}。
the command is sent to the playing APK through the HTTP _ playlist callback event via the callback event processing module.
And after receiving the HTTP _ PLAYCTRL event, the playing APK calls an Exoplayer library interface to create an Exoplayer player, and an Exoplayer interface management module inquires available Surface handles and associates the Surface handles with the created player and the native Id. The subsequent instructions with instanceId native id correspond to the control of the Exoplayer.
The Exoplayer interface management module acquires audio track information from the code stream through an Exoplayer player, encapsulates Exoplayer info information after subtitle information, calls a JNI interface, and sets related information to a player control middleware. If the current track information format is set as follows:
{"ExplayerInfo":{"InfoType":"CurAudioTrack","InstanceId":NativeId,
"CurAudio":{"PID":33,"language_code":"chi","language_eng_name":"Chines e","audio_type":0,"codec":"AC3"}}}
and the player control middleware can store the information into corresponding playing channel management after acquiring the native Id in the information instruction, and sends related playing channel information to the server when the server needs to change the information.
When information such as audio and video of a played program, subtitles and the like is displayed as required, the player control middleware searches a corresponding channel information storage table according to the native Id and feeds back the corresponding information to the server side when calling the player control middleware interface to obtain the display information through the browser, the JS extended player interface, the player client, the player server side and the player control middleware.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be preferred embodiments of the present invention, it is to be understood that the invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (4)
1. A control method for realizing multi-screen playing on a set-top box based on an IPTV network is characterized by comprising the following steps:
step S1: when the server calls a playing interface to create a player, the browser distributes a native Id mark to the player; the playing control middleware creates corresponding playing channels for the player, and each playing channel is controlled by being associated with a native Id mark;
step S2: the player control middleware distributes the playing type according to the playing source website: calling an ExoPlayer library to play based on streaming media transmitted by an HTTP protocol; live stream and unicast stream transmitted by non-HTTP protocol are played after network protocol analysis, Ts packet analysis, Ts injection decoding control and CTC injection decoding channel, and corresponding Surface object is allocated by playing APK to realize multi-screen playing;
the invoking of the ExoPlayer library by the streaming media transmitted based on the HTTP protocol specifically comprises the following steps:
if the player control middleware judges that the player control middleware is a network source transmitted by an HTTP protocol, packaging an Exoplayer control instruction and transmitting the Exoplayer control instruction to a playing APK through a call-back event module, and after the playing APK analyzes the corresponding Exoplayer control instruction to obtain a playing path and starting time, calling an interface of an Exoplayer library to start playing;
the Exoplayer library is used for analyzing media information, the media information encapsulates corresponding ExoplayerInfo instructions, and the ExoplayerInfo instructions are delivered to a player control middleware through a JNI (Java native interface) to be stored in a playing channel marked by a native Id (identity); and the server calls a player control middleware interface through the player client to acquire corresponding local player analysis video source information.
2. The IPTV-network-based control method for realizing multi-screen playing on a set-top box according to claim 1, wherein the browser comprises a native ID generation module of a local player, and the browser creates a single-screen player, a PIP player or a multi-screen player by calling different player interfaces in a server EPG; when a player is created, the browser distributes the native Id and creates a player client object, the player client object and the native Id are associated and stored in an object management queue, and the native Id is transmitted through a public association part of the player client and a player server; the player server creates a player server object according to the acquired native Id mark, stores the native Id as a private value of the object, and associates the player client with the object of the player server and the native Id.
3. The IPTV-network-based control method for realizing multi-screen playing on a set-top box according to claim 2, wherein when a single-screen player is created, a browser assigns a native Id of 0; when a PIP player is created, the browser allocates a native Id to be 1; and when a multi-screen player is created, the native Id takes a value within 2-255 circularly.
4. The IPTV-network-based control method for realizing multi-screen playing on the set-top box according to claim 1, wherein if the player control middleware judges that the playing is not the HTTP-protocol playing, the player control middleware allocates a network protocol analysis channel, a Ts packet analysis channel, a Ts injection decoding control management channel and a CTC injection decoding channel for each playing channel to realize independent receiving, analysis and decoding functions.
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| CN113949821A (en) * | 2021-09-15 | 2022-01-18 | 长视科技股份有限公司 | Video playing method and device, computer equipment and storage medium |
| CN114615546B (en) * | 2022-02-08 | 2024-04-12 | 武汉光庭信息技术股份有限公司 | Video playing method and device, electronic equipment and storage medium |
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Application publication date: 20200714 Assignee: Sichuan Changhong Xinwang Technology Co.,Ltd. Assignor: SICHUAN CHANGHONG ELECTRIC Co.,Ltd. Contract record no.: X2023980043949 Denomination of invention: A Control Method for Implementing Multi screen Playback on Set-top Box Based on IPTV Network Granted publication date: 20211001 License type: Common License Record date: 20231030 |