WO2013177734A1 - 局域网中媒体资源播放列表的处理方法、装置和系统 - Google Patents

局域网中媒体资源播放列表的处理方法、装置和系统 Download PDF

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Publication number
WO2013177734A1
WO2013177734A1 PCT/CN2012/076147 CN2012076147W WO2013177734A1 WO 2013177734 A1 WO2013177734 A1 WO 2013177734A1 CN 2012076147 W CN2012076147 W CN 2012076147W WO 2013177734 A1 WO2013177734 A1 WO 2013177734A1
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Prior art keywords
playlist
media
media server
element table
saved
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PCT/CN2012/076147
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English (en)
French (fr)
Inventor
单振威
朱萸
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to KR1020127031713A priority Critical patent/KR101421566B1/ko
Priority to EP12791068.5A priority patent/EP2696295B1/en
Priority to CN201280000364.9A priority patent/CN103608800B/zh
Priority to PCT/CN2012/076147 priority patent/WO2013177734A1/zh
Priority to JP2014517408A priority patent/JP5925304B2/ja
Priority to US13/689,122 priority patent/US9092462B2/en
Publication of WO2013177734A1 publication Critical patent/WO2013177734A1/zh
Priority to US14/707,667 priority patent/US9773001B2/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/41Indexing; Data structures therefor; Storage structures
    • 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
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00Digital computers in general; Data processing equipment in general
    • G06F15/16Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/10File systems; File servers
    • G06F16/16File or folder operations, e.g. details of user interfaces specifically adapted to file systems
    • G06F16/162Delete operations
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/22Indexing; Data structures therefor; Storage structures
    • G06F16/2282Tablespace storage structures; Management thereof
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/23Updating
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the 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
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/4104Peripherals receiving signals from specially adapted client devices
    • H04N21/4126The peripheral being portable, e.g. PDAs or mobile phones
    • H04N21/41265The peripheral being portable, e.g. PDAs or mobile phones having a remote control device for bidirectional communication between the remote control device and client device
    • 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
    • H04N21/41Structure of client; Structure of client peripherals
    • H04N21/422Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4223Cameras
    • 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
    • H04N21/436Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4363Adapting the video stream to a specific local network, e.g. a Bluetooth® network
    • H04N21/43632Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
    • 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 or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • 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
    • H04N21/47End-user applications
    • H04N21/482End-user interface for program selection
    • H04N21/4825End-user interface for program selection using a list of items to be played back in a given order, e.g. playlists
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L2012/40267Bus for use in transportation systems
    • H04L2012/40273Bus for use in transportation systems the transportation system being a vehicle

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, device, and system for processing a media resource playlist in a local area network.
  • home network devices With the development of electronic digital technology and the widespread digitization of consumer electronics itself, more and more digital electronic devices are emerging in the home, such as digital entertainment devices such as mobile phones or cameras, and home appliances such as personal computers or digital televisions. How to connect these digital electronic devices in a wired or wireless manner to form a local area network that can realize functions such as content sharing or mutual control, such as forming a home network, is a concept that the industry is conceiving and striving to achieve. Among them, the digital electronic devices that make up the home network are called home network devices.
  • UPnP Universal Plug and Play
  • P2P peer-to-peer network connections
  • P2P Peer-to-Peer
  • the user controls the home network device through a control point (CP, Control Point) device in the home network.
  • the control point device adopts the UPnP protocol and calls the home network device supporting the UPnP technology (called UPnP device).
  • Related control commands (action) to read status information of UPnP devices in the home network, and to control the UPnP device to perform corresponding operations.
  • UPnP defines an audio and video (AV, Audio and Video) standard, in which three devices are defined: Media Server (MS, Media Server) , media playback device (MR, Media Renderer) and media control point (AV CP, Audio and Video Control Point); wherein, the media server is a device for storing media, the media player device is a device for media playback, and the AV CP is for control
  • the device of the above two devices can perform the function of playing the content in the media server on the media playing device by the AV CP browsing operation of the media server and the media playing operation of the media server, for example, see FIG.
  • the AV CP obtains the content information of the private video from the mobile phone or digital camera, and then generates a play.
  • List Playlist
  • the playlist It is sent to a digital television for storage so that the digital television can acquire media resources (ie, video) according to the playlist and play the media resources.
  • the inventors of the present invention found that the playlist generated by the AV CP on the media server and sent to the media server is temporary, if the media server storing the content associated with the playlist goes offline Or the Internet Protocol (IP, Internet Protocol) address changes, or the content itself changes, the playlist is partially or completely invalid, which greatly affects the user's playback experience.
  • IP Internet Protocol
  • the embodiment of the invention provides a method, a device and a system for processing a media resource playlist in a local area network, which can provide a continuously effective playlist and improve the user's playing experience.
  • a method for processing a media resource playlist in a local area network wherein the local area network includes a media server and a media playing device, and the method includes:
  • the playlist includes a uniform resource locator of the media resource and a file name of the media resource, where the playlist element table includes the media resource At least one of an identity, a media server identifier, an internet protocol address of the media server, and a uniform resource locator of the media resource;
  • a playlist processing apparatus includes: a playlist and a playlist element table, the playlist includes a uniform resource locator of the media resource and a file name of the media resource, and the playlist element table includes the media resource identifier and the media server At least one of an identifier, an internet protocol address of the media server, and a uniform resource locator of the media resource;
  • a sending unit configured to send the generated playlist to the media playing device in the local area network, and send the updated playlist to the media playing device in the local area network when the playlist is updated.
  • a communication system includes any of the playlist processing devices provided in the embodiments of the present invention.
  • Playlist and playlist element table and send the updated playlist to the media playback device in the local area network. Since the playlist can be updated in real time in the embodiment of the present invention, the playlist and the media can be guaranteed. The consistency of the source, which can provide users with a continuous and effective playlist to improve the user's playback experience.
  • Figure la is a schematic diagram of a scenario for playing media resources in a local area network
  • Figure lb is a flow chart of a method for processing a media resource playlist in a local area network according to an embodiment of the present invention
  • FIG. 2 is another flowchart of a method for processing a media resource playlist in a local area network according to an embodiment of the present invention
  • FIG. 3 is still another flowchart of a method for processing a media resource playlist in a local area network according to an embodiment of the present invention
  • FIG. 4 is another flowchart of a method for processing a media resource playlist in a local area network according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a playlist processing apparatus according to an embodiment of the present invention.
  • FIG. 5b is a schematic structural diagram of a playlist processing apparatus according to an embodiment of the present invention.
  • Embodiments of the present invention provide a method, an apparatus, and a system for processing a media resource playlist in a local area network. The details are described below separately.
  • Embodiment 1
  • the playlist processing device may be a control point, or the playlist processing device may specifically include a control point and a medium.
  • the heart server that is, the control point and the central server perform operations together; wherein, the control point can be integrated in the same entity as the media playing device, the media server or the central server, and the control point can also exist as an independent entity.
  • a method for processing a media resource playlist in a local area network comprising: updating a saved playlist and a playlist element table when determining a change of a state of a media server in the local area network; and sending the updated play to the media play device in the local area network List.
  • the playlist may include information such as a URL of the media resource and a file name of the media resource.
  • the playlist element table may include a resource identifier (Resource ID, Resource Identifier), a media server identifier, an IP address of the media server, and a media resource. At least one of the URLs; the media server identifier may be a Universal Unique Identifier (UUID) of the media server.
  • UUID Universal Unique Identifier
  • the playlist processing apparatus may also generate a play before the step of "determining the state of the media server in the local area network changes the saved playlist and playlist element table (ie, step 101)".
  • the list and the playlist element table, and the generated playlist and playlist element table are sent to the media playing device.
  • the specific process of the media resource playlist processing method in the local area network may be as follows:
  • the media resource information may be specifically obtained by sending a browsing request (BrowseO) or a search request (SearchQ) to the media server.
  • the details can be as follows: The playlist processing device sends a browsing request or a search request to the media server;
  • the media server After receiving the browsing request or the search request, the media server returns the media resource information to the playlist processing device.
  • the media resource information may include information such as a media resource identifier, a media server identifier, an Internet Protocol (IP) address of the media server, a Universal Resource Locator (URL), and the like, and may also include Information such as the file name of the media resource.
  • IP Internet Protocol
  • URL Universal Resource Locator
  • step 201 Generate a playlist and a playlist element table according to the media resource information acquired in step 201, and save the generated playlist and playlist element table.
  • the playlist may include information such as a URL of the media resource and a file name of the media resource, where the playlist element table may include at least one of a media resource identifier, a media server identifier, an IP address of the media server, and a URL of the media resource.
  • the media server identifier may specifically be a UUID of the media server.
  • the media play device may request to call the activity class of "set static playlist", that is, “SetStaticPlaylist()action” to deliver the playlist to the media playing device.
  • the saved playlist and the playlist element table are updated.
  • Step 204 may be any one or more of the following: Update the saved playlist and playlist element table; for example, the details can be as follows:
  • SSDP single service discovery protocol
  • the online announcement message carries an IP address of the media server and a media server identifier
  • the specific IP address can be found in the saved playlist element table according to the media server name identifier carried in the online announcement message, and then the IP address of the media server carried in the online announcement message and the found IP address are performed. If the comparison is the same, it does not operate. If they match, the content related to the IP address in the saved playlist is updated, and the found IP address is updated.
  • the content related to the IP address refers to a related record related to the IP address, such as a URL, and the like.
  • the message sent by the media server is received, or an online announcement message (such as an SSDP message) sent by the media server is not received within the preset time, it is determined that the media server is offline, and then the saved playlist is deleted.
  • the record corresponding to the media server, or the record corresponding to the media server in the saved playlist is marked as unavailable.
  • the media server Since the media server periodically sends the online announcement message to the control point or the central server, if the control point or the central server does not receive the online announcement message sent by the media server within a certain period of time, it indicates that the media server has gone offline. Therefore, the saved playlist and the record corresponding to the media server in the playlist element table can be deleted at this time, so as to prevent the user from clicking on these invalid items, and the quality of the user experience is degraded.
  • the size of the time can be set according to the needs of the actual application.
  • the saved playlist and the playlist element table are updated; for example, the specifics may be as follows:
  • Event Receiving an event (Event) reported by the media server, where the event indicates a changed media resource on the media server;
  • the media resource identifier may be determined according to the event, and then the corresponding record is searched in the playlist element table and the saved playlist according to the media resource identifier (ie, the corresponding record is searched in the playlist element table, and in the playlist. Find the corresponding record), update the media in the record The URL of the volume resource, and the URL of the media resource in the record found in the update playlist.
  • the method for controlling media resource play in the local area network may further include:
  • Querying a playlist on the media playing device sending a play request to the media playing device according to the playlist on the queried media playing device, where the play request carries the playlist identifier and the media resource identifier, so that the media playing device according to the playlist
  • the identity and media asset identity play the media asset.
  • the media server may specifically be a terminal device having a storage function such as a smart phone, a personal computer, a digital camera, a notebook computer, a portable media player, or a mobile hard disk.
  • the media playback device may specifically be a terminal device that can display media on a digital television, a notebook computer, or a personal computer.
  • Generating a playlist and a playlist element table according to the media resource information saving the generated playlist to the media playing device in the local area network, and then updating the saved playlist and the playlist when determining that the state of the media server changes.
  • the element table and sends the updated playlist to the media playing device in the local area network. Since the playlist can be updated in real time in the embodiment of the present invention, the consistency between the playlist and the media source can be ensured, thereby providing the user with a continuously effective playlist and improving the user's playing experience.
  • the playlist processing device will be specifically described as a control point as an example.
  • the control point may be integrated in the media playing device, or may be integrated in the media server, or may be integrated into some intermediate devices, such as a set top box, a gateway, or an access point device, or may be An independent entity exists.
  • the control point obtains media resource information from a media server in the local area network.
  • the media resource information may be obtained by sending a browsing request (BrowseO) or a search request (Search()) to the media server, which may be specifically as follows:
  • the control point sends a browsing request or a search request to the media server
  • the media server After receiving the browsing request or the search request, the media server returns the media resource information to the control point.
  • the media resource information may include information such as a media resource identifier, a media server identifier, an IP address of the media server, a URL of the media resource, and the like, and may also include information such as a file name of the media resource.
  • the control point generates a playlist and a playlist element table according to the media resource information obtained in step 301, and saves the generated playlist and the playlist element table.
  • the playlist may include information such as a URL of the media resource and a file name of the media resource.
  • information such as a URL of the media resource and a file name of the media resource.
  • the format of the playlist can be as follows:
  • the user can select a media resource to be displayed on the media playing device through the playlist. For example, when the user needs to play "Zhang San Adventure” on the media playing device, the option of the file name in the playlist is "Zhang San Adventure”. .
  • the playlist element table may include one or more of a media resource identifier, a media server identifier, an IP address of the media server, and a URL of the media resource.
  • the media server identifier may be a UUID of the media server.
  • the following examples illustrate the media server identifier as a UUID as an example.
  • the playlist element can be found in Table 2, as follows: Media resource identifier Media server ID IP URL
  • the control point sends the generated playlist to the media playback device.
  • control point can issue a playlist to the media playback device by requesting the media playback device to call the activity class of "set static playlist", that is, "SetStaticPlaylist()action”.
  • the parameter of "SetStaticPlaylistO” may specifically include information such as an identifier (ID, Identity) stored on the media playing device, a content of the playlist, and a length of the playlist byte. For example, see Table 3.
  • the “InstancelD” indicates the identifier stored in the playlist on the media playing device, that is, the storage identifier assigned by the media playing device to the playlist when the playlist is stored on the media playing device, and is used to indicate the storage location of the playlist.
  • “PlaylistData” represents the content of the playlist
  • “PlaylistDataLength” represents the length of the playlist byte.
  • "IN” indicates that the status of the corresponding parameter is "input”.
  • the control point updates the saved playlist by using an online announcement message, such as an SSDP message (hereinafter, the SSDP message is used as an online advertisement message as an example) to monitor the status of the media server in the local area network and determine that the status of the media server changes.
  • an online announcement message such as an SSDP message (hereinafter, the SSDP message is used as an online advertisement message as an example) to monitor the status of the media server in the local area network and determine that the status of the media server changes.
  • Playlist element table For example, the specifics can be: 3 ⁇ 4 under:
  • the control point updates the saved playlist and the playlist element table when the IP address of the media server changes according to the saved playlist element table; for example, the details may be as follows:
  • the control point receives the SSDP message sent by the media server, where the SSDP message carries the IP address of the media server and the media server identifier;
  • the control point determines the IP address and the media server name identifier of the media server carried in the SSDP message, and updates the content related to the IP address in the saved playlist when the IP address and the media server identifier in the saved playlist element table are inconsistent. And update the IP address of the media server in the playlist element table.
  • the IP address of the media server is "192.168.5.12"
  • the IP address of the media server corresponding to “UUID1” is “192.168.5.11”.
  • the IP address of the media server carried in the SSDP message is different from “192.168.5.12”, so update "192.168.5.11” of Table 2 to "192.168.5.12” and the IP address "192.168” in the playlist. 5.11" related content is also updated, such as updating the original URL "http:// 192.168.5.11/contentl" to "http: 192 192.168.5.12/contentl".
  • control point determines that the saved playlist and the playlist element table are updated when the media server goes offline; for example, the details may be as follows:
  • the control point determines that the media server is offline, and then deletes the saved playlist corresponding to the media server.
  • the record, or the record corresponding to the media server in the saved playlist, is marked as "unavailable”.
  • the media server Since the media server periodically sends the SSDP message to the control point or the central server, if the control point or the central server does not receive the SSDP message sent by the media server within a certain period of time, it indicates that the media server has gone offline, so this
  • the records corresponding to the media server in the saved playlist and the playlist element table may be deleted to prevent the user from clicking on these invalid items, thereby degrading the quality of the user experience.
  • the size of the time can be set according to the needs of the actual application.
  • the control point determines that the media resource of the media server changes, the saved playlist and the playlist element table are updated; for example, the specifics may be as follows:
  • the control point receives an event reported by the media server, where the event indicates a changed media resource on the media server;
  • the media resource identifier may be determined according to the event, and then the corresponding record is searched in the playlist element table and the saved playlist according to the media resource identifier (ie, the corresponding record is searched in the playlist element table, and in the playlist. Find the corresponding record), update the URL of the media resource in the record, and update the URL of the media resource in the record found in the playlist.
  • the control point sends the updated playlist to the media playback device.
  • control point can issue an updated playlist to the media playback device by requesting the media play device to call the activity class of "set static playlist", that is, "SetStaticPlaylist()action”.
  • the parameter of "SetStaticPlaylist(),” may specifically include information such as the identifier stored on the media playing device, the content of the playlist, and the length of the playlist byte. For example, see Table 4.
  • the “InstancelD” indicates the identifier stored in the playlist on the media playing device, that is, the storage identifier assigned by the media playing device to the playlist when the playlist is stored on the media playing device, and is used to indicate the storage location of the playlist.
  • “PlaylistData” represents the content of the playlist
  • “PlaylistDataLength” represents the length of the playlist byte.
  • "IN” indicates that the status of the corresponding parameter is "input”.
  • the media playback device replaces the updated playlist with the original playlist.
  • the control point queries a playlist on the media playing device.
  • an activity class Scan
  • ScanPlaylist() action can be added to the media player: ScanPlaylist() action, so that the control point can query the media play device to invoke the action to query the playlist stored on the media player.
  • the parameter of "ScanPlaylist(),” may specifically include information such as the identifier stored on the media playing device, the content of the playlist, and the length of the playlist byte. For example, see Table 5.
  • the “InstancelD” indicates the identifier stored in the playlist on the media playing device, that is, the storage identifier assigned by the media playing device to the playlist when the playlist is stored on the media playing device, and is used to indicate the storage location of the playlist.
  • “PlaylistData” represents the content of the playlist
  • “PlaylistDataLength” represents the length of the playlist byte.
  • "IN” indicates that the status of the corresponding parameter is "output”.
  • the control point selects a playlist in at least one playlist displayed by the media playing device, and requests the media play device to play the playlist.
  • the control point may call an activity class of “representing play” in the media playing device. : Play() action, to request to play the playlist.
  • the parameter of "Play(),” may specifically include information such as an identifier (ID, Identity) stored in the playlist on the media playing device, a content item number of the playlist, and a playback speed. For example, see Table 6.
  • the media playback device requests the media resource from the media server according to the playlist selected by the control point.
  • the media playback device may request a media resource from the media server pointed to by the URI in the selected playlist via "HTTP Get".
  • the media server transmits the media resource to the media playing device.
  • the media server can respond to the "HTTP Get" request of the media playback device and transmit the media asset to the media playback device.
  • the media playing device plays the media resource.
  • the embodiment uses the control point to obtain media resource information from the media server in the local area network, generates a playlist and a playlist element table according to the media resource information, and saves the generated playlist to the media playing device in the local area network. And then, when determining that the state of the media server changes, updating the saved playlist and the playlist element table, and sending the updated playlist to the media playing device in the local area network, so that the updated playlist can be subsequently followed. Play media assets. Since the playlist can be updated in real time in the embodiment of the present invention, the consistency between the playlist and the media source can be ensured, thereby providing the user with a continuously effective playlist and improving the user's play experience.
  • the playlist processing device will be specifically described as a control point and a central server.
  • the control point may be specifically integrated in the media playing device, or may be integrated in the media server or the central server, or may be integrated into the first one. In some intermediate devices, such as set-top boxes, gateways or access point devices, or they can exist as separate entities.
  • the central server may specifically be a terminal device such as a set top box, a gateway, or an access point device.
  • the control point and the central server can be in the same entity and can be in different entities.
  • the central server acquires media resource information from a media server in the local area network.
  • the media resource information may be specifically obtained by sending a browsing request (BrowseO) or a search request (Search()) to the media server.
  • a browsing request (BrowseO) or a search request (Search()) to the media server.
  • the details can be as follows:
  • the central server sends a browsing request or a search request to the media server;
  • the media server After receiving the browsing request or the search request, the media server returns the media resource information to the central server.
  • the media resource information may include information such as a media resource identifier, a media server identifier, an IP address of the media server, a URL of the media resource, and the like, and may also include information such as a file name of the media resource.
  • the control point performs a configuration on the central server for generating a playlist, for example, causing the central server to generate a playlist of all media files with a suffix named "MP3" in the local area network, and the like.
  • the central server generates a playlist and playlist element table according to the media resource information acquired in step 301 and the configuration in step 402, and saves the generated playlist and playlist element table.
  • the playlist may include information such as a URL of the media resource and a file name of the media resource.
  • information such as a URL of the media resource and a file name of the media resource.
  • the format of the playlist can be seen in Table VII, as follows:
  • the user can select a media resource to be displayed on the media playing device through the playlist. For example, when the user needs to play "Zhang San Adventure" on the media playing device, the option of the file name in the playlist is "Zhang San Adventure". .
  • the playlist element table may include one or more of a media resource identifier, a media server identifier, an IP address of the media server, and a URL of the media resource.
  • the media server identifier may be a UUID of the media server. The following examples are described by taking the media server identifier as a UUID as an example.
  • the format of the playlist element table can be seen in Table 8, as follows:
  • the control point acquires a playlist on the central server.
  • the parameter of "ScanPlaylist(),” may specifically include information such as the identifier stored on the media playing device, the content of the playlist, and the length of the playlist byte. For example, see Table 9.
  • “InstancelD” represents the identifier stored on the media playback device
  • “PlaylistData” represents the content of the playlist
  • “PlaylistDataLength” represents the length of the playlist byte.
  • “IN” indicates that the state of the corresponding parameter is "output”.
  • the control point sends the obtained playlist to the media playing device.
  • the control point can issue a playlist to the media playback device by requesting the media play device to call the activity class of "set static playlist", that is, "SetStaticPlaylist()action".
  • the parameter of "SetStaticPlaylist(),” may specifically include information such as an identifier (ID, Identity) stored on the media playing device, a content of the playlist, and a length of the playlist byte. For example, see Table 10.
  • “InstancelD” represents the identifier stored on the media playback device
  • “PlaylistData” represents the content of the playlist
  • “PlaylistDataLength” represents the length of the playlist byte.
  • “IN” indicates that the status of the corresponding parameter is “input”.
  • the central server monitors the status of the media server in the local area network by using an online announcement message, such as an SSDP message, and updates the saved playlist and the playlist element table when the status of the media server changes.
  • an online announcement message such as an SSDP message
  • the central server updates the saved playlist and the playlist element table when the IP address of the media server changes according to the saved playlist element table; for example, the following may be:
  • the central server receives the SSDP message sent by the media server, where The SSDP message carries the IP address of the media server and the media server identifier;
  • the central server determines the IP address and the media server name identifier of the media server carried in the SSDP message, and updates the content related to the IP address in the saved playlist when the IP address and the media server identifier in the saved playlist element table are inconsistent. And update the IP address of the media server in the playlist element table.
  • the media server ID carried in the SSDP message is "UUID1" and the IP address of the media server is "192.168.5.12", according to Table 2, the media corresponding to "UUID1"
  • the IP address of the server is "192.168.5.11”, which is different from the IP address of the media server carried in the SSDP message is "192.168.5.12”, so update "192.168.5.11” of Table 2 to "192.168.5.12" and The contents of the playlist related to the IP address "192.168.5.11” are also updated.
  • the central server determines that the media server is offline, and then deletes the saved playlist corresponding to the media server.
  • the record, or the record corresponding to the media server in the saved playlist, is marked as "unavailable”.
  • the media server Since the media server periodically sends the SSDP message to the control point or the central server, if the control point or the central server does not receive the SSDP message sent by the media server within a certain period of time, it indicates that the media server has gone offline, so this
  • the records corresponding to the media server in the saved playlist and the playlist element table may be deleted to prevent the user from clicking on these invalid items, thereby degrading the quality of the user experience.
  • the size of the time can be set according to the needs of the actual application.
  • the central server determines that the media resource of the media server changes, the saved playlist and the playlist element table are updated; for example, the details may be as follows:
  • the central server updates the record corresponding to the changed media resource in the saved playlist according to the event, and updates the i-record corresponding to the changed media resource in the playlist element table according to the event.
  • the central server may specifically determine the media resource identifier according to the event, and then search for the corresponding record in the playlist element table and the saved playlist according to the media resource identifier respectively (ie, find the corresponding record in the playlist element table, and play Find the corresponding record in the list, update the URL of the media resource in the record, and update the URL of the media resource in the record found in the playlist.
  • the central server sends the updated playlist to the media playback device.
  • the central server can call "set static playlist” by requesting a media playback device.
  • the activity class, "SetStaticPlaylist()action” delivers the updated playlist to the media playback device.
  • the parameter of "SetStaticPlaylist(),” may specifically include information such as the identifier stored on the media playing device, the content of the playlist, and the length of the playlist byte. For example, see Table 11.
  • “InstancelD” represents the identifier stored on the media playback device
  • “PlaylistData” represents the content of the playlist
  • “PlaylistDataLength” represents the length of the playlist byte.
  • “IN” indicates that the status of the corresponding parameter is “input”.
  • the media playback device replaces the updated playlist with the original playlist.
  • the control point queries a playlist on the media playing device.
  • an activity class (action) can be added to the media player: ScanPlaylist() action, so that the control point can call the action to query the playlist stored on the media player.
  • the parameter of "ScanPlaylist(),” may specifically include information such as the identifier stored on the media playing device, the content of the playlist, and the length of the playlist byte. For example, see Table 10.
  • PlaylistData OUT playlist content
  • PlaylistDataLength OUT Playlist Byte Length where "InstancelD” represents the identifier stored on the media playback device, "PlaylistData” represents the content of the playlist, and “PlaylistDataLength” represents the length of the playlist byte. "IN” indicates that the state of the corresponding parameter is "output”.
  • the control point selects a playlist in at least one playlist displayed by the media playing device, and requests the media play device to play the playlist.
  • the control point may call an activity class of “representing play” in the media playing device. : Play() action, to request to play the playlist.
  • the parameter of "Play(),” may specifically include information such as an identifier (ID, Identity) stored in the playlist on the media playing device, a content item number of the playlist, and a playback speed, for example, see thirteen.
  • “InstancelD” indicates that the identifier "Index” stored in the playlist on the media playing device indicates the content item number of the playlist, and “Speed” indicates the playing speed. "IN” indicates that the status of the corresponding parameter is “input”.
  • the media playback device requests the media resource from the media server according to the playlist selected by the control point.
  • the media player can use "HTTP Get” to URI in the selected playlist.
  • the media server pointed to requests media resources.
  • the media server transmits the media resource to the media playing device.
  • the media server can respond to the "HTTP Get" request of the media playback device and transmit the media asset to the media playback device.
  • the media playing device plays the media resource.
  • the embodiment uses the central server to obtain media resource information from the media server in the local area network, generates a playlist and a playlist element table according to the media resource information, and saves the generated playlist to the local area network through the control point.
  • the media playing device after determining that the state of the media server changes, updating the saved playlist and playlist element table, and sending the updated playlist to the media playing device in the local area network, so that the subsequent can be updated according to the update Playlists play media assets. Since the playlist can be updated in real time in the embodiment of the present invention, the consistency between the playlist and the media source can be ensured, thereby providing the user with a continuously effective playlist and improving the user's playing experience.
  • Embodiment 5 Embodiment 5
  • the embodiment of the present invention further provides a playlist processing apparatus.
  • the playlist processing apparatus includes an update unit 503 and a sending unit 504.
  • the saved playlist and playlist are saved. periodic table;
  • the playlist may include information such as a URL of the media resource and a file name of the media resource, where the playlist element table may include at least one of a media resource identifier, a media server identifier, an IP address of the media server, and a URL of the media resource.
  • the media server identifier may specifically be a UUID of the media server.
  • the sending unit 504 is configured to send the updated playlist to the media playing device in the local area network when the playlist is updated.
  • the playlist processing apparatus may further include an obtaining unit 501 and a generating unit 502;
  • the obtaining unit 501 is configured to obtain media resource information from a media server in a local area network.
  • the media resource may be obtained by requesting a browsing request or a search request from the media server.
  • Source information may be obtained by requesting a browsing request or a search request from the media server.
  • the media resource information may include information such as a media resource identifier, a media server identifier, an IP address of the media server, a URL of the media resource, and the like, and may also include information such as a file name of the media resource.
  • the media resource information may include information such as a media resource identifier, a media server identifier, an Internet Protocol (IP) address of the media server, a Universal Resource Locator (URL), and the like, and may also include Information such as the file name of the media resource.
  • IP Internet Protocol
  • URL Universal Resource Locator
  • the generating unit 502 is configured to generate a playlist and a playlist element table according to the media resource information acquired by the obtaining unit 501, and save the playlist and the playlist element table;
  • the playlist may include information such as a URL of the media resource and a file name of the media resource, where the playlist element table may include at least one of a media resource identifier, a media server identifier, an IP address of the media server, and a URL of the media resource.
  • the media server identifier may specifically be a UUID of the media server.
  • the updating unit 503 is specifically configured to: when determining that the state of the media server changes, the playlist and the playlist element table saved by the generating unit 502;
  • the sending unit 504 is specifically configured to send the playlist generated by the generating unit 502 to the media playing device in the local area network, and send the updated playlist of the updating unit 503 to the media playing device in the local area network when the playlist is updated.
  • the media play device may request to call the activity class of "set static playlist", that is, “SetStaticPlaylist()action” to deliver the playlist to the media playing device.
  • the change of the status of the media server refers to a scenario in which the IP address of the media server changes, the media server goes offline, or the media resource of the media server changes, that is, the update unit 503 includes a first update subunit, and/or a second update subunit, and/or a third update subunit, where the first update subunit may be configured to update the saved playlist when the internet protocol address of the media server changes according to the saved playlist element table. And a playlist element table, where the second update subunit is specifically configured to: when the media server goes offline, update the saved playlist and the playlist element table;
  • the third update subunit may be specifically configured to determine that the media resource of the media server changes When you save the saved playlist and playlist element table.
  • the first update subunit may be configured to receive an online advertisement message sent by the media server, where the online advertisement message carries the IP address of the media server and the media server identifier; and determines the IP address of the media server carried in the online advertisement message.
  • the address and media server name identifier when the IP address and the media server identifier in the saved playlist element table are inconsistent, update the IP-related content in the saved playlist, such as a URL, and update the media server in the playlist element table. IP. and / or,
  • the second update subunit may be specifically configured to: if the online advertisement message sent by the media server is not received within the preset time, determine that the media server is offline, and delete the saved playlist corresponding to the media server. Record, or mark the record corresponding to the media server in the saved playlist as unavailable. and / or,
  • the third update subunit may be configured to receive an event reported by the media server, where the event indicates a changed media resource on the media server, and update the saved playlist in the saved playlist according to the received event. Corresponding records, and updating records corresponding to the changed media resources in the playlist element table according to the event.
  • the online announcement message may specifically be an SSDP message.
  • the playlist processing apparatus may further include a query list unit and a request play unit; and a query list unit, configured to query a playlist on the media playing device;
  • the requesting playing unit is configured to send a play request to the media playing device according to the playlist on the queried media playing device, where the play request carries the playlist identifier and the media resource identifier, so that the media playing device identifies the media and the media according to the playlist
  • the resource ID plays the media resource.
  • each of the above units may be implemented as a separate entity, or may be arbitrarily combined and implemented as one or several entities.
  • each of the above various units refer to the foregoing embodiments, and details are not described herein again.
  • the playlist processing device may specifically be a control point, or the playlist processing device may specifically include a control point and a central server, that is, the control point and the central server perform operations together.
  • the control point may be integrated with the media playing device in the same entity, or may be integrated with the media server in the same entity, or may be integrated with the central server in the same entity, or may be an independent entity. presence.
  • the central server can be a set-top box, gateway or access Terminal equipment such as point devices.
  • the control point and the central server can be in the same entity and can be in different entities.
  • the media server may specifically be a terminal device having a storage function such as a smart phone, a personal computer, a digital camera, a notebook computer, a portable media player, or a mobile hard disk.
  • the media playback device may specifically be a terminal device that can display media on a digital television, a notebook computer, or a personal computer.
  • the obtaining unit 501 of the playlist processing apparatus of the embodiment can obtain the media resource information from the media server in the local area network, and the generating unit 502 generates the playlist and the playlist element table according to the media resource information, and saves, and then sends the information.
  • the unit 504 sends the generated playlist to the device, the saved playlist and the playlist element table are updated, and the updated playlist is transmitted to the media playing device through the sending unit 504. Since the playlist can be updated in real time in the embodiment of the present invention, the consistency between the playlist and the media source can be ensured, thereby providing the user with a continuously effective playlist and improving the user's playing experience.
  • the embodiment of the present invention further provides a communication system, which includes any of the playlist processing devices provided by the embodiments of the present invention.
  • a playlist processing device configured to acquire media resource information from a media server in a local area network, generate a playlist and a playlist element table according to the media resource information, and save the playlist and the playlist element table; When the status changes, the saved playlist and playlist element table are updated; the updated playlist is sent to the media playing device in the local area network.
  • the playlist may include information such as a URL of the media resource and a file name of the media resource, where the playlist element table may include at least one of a media resource identifier, a media server identifier, an IP address of the media server, and a URL of the media resource.
  • the media server identifier may specifically be a UUID of the media server.
  • the change of the status of the media server refers to a scenario where the IP address of the media server changes, the media server goes offline, or the media resource of the media server changes, that is, a playlist processing device, configured to update a saved playlist and a playlist element table when the Internet Protocol address of the media server changes according to the saved playlist element table; or, when the media server is offline, Updating the saved playlist and playlist element table; or, when determining that the media server's media resource changes, updating the saved playlist and playlist element table.
  • the details may be as follows: Update the saved playlist and the playlist element table; for example, the specifics may be as follows:
  • IP address and the media server name identifier of the media server carried in the online announcement message when the IP address and the media server identifier in the saved playlist element table are inconsistent, updating the content related to the IP address in the saved playlist, Such as a URL, and updating the IP address of the media server in the playlist element table.
  • the online advertisement message sent by the media server is not received within the preset time, it is determined that the media server is offline, and then the record corresponding to the media server in the saved playlist is deleted, or the saved playlist is The record corresponding to the media server is marked as unavailable.
  • the saved playlist and the playlist element table are updated; for example, the specifics may be as follows:
  • the online announcement message may be SSDP.
  • the playlist processing device is further configured to query a playlist on the media playing device, and send a play request to the media playing device according to the playlist on the queried media playing device, where the play request carries the playlist identifier and the media resource identifier So that the media playing device plays the media resource according to the playlist identifier and the media resource identifier.
  • the communication system may further include a media playing device and a media server.
  • the media playing device is configured to receive the playlist sent by the playlist processing device, and receive the play request sent by the playlist processing device, acquire the media resource from the media server according to the play request of the playlist processing device, and play the media resource.
  • a media server configured to send media resource information to the playlist processing device, and provide a play resource to the media play device.
  • the playlist processing device of the communication system of the present embodiment acquires media resource information from a media server in a local area network, generates a playlist and a playlist element table according to the media resource information, and saves the generated playlist to the local area network.
  • the medium playing device then updates the saved playlist and playlist element table when it is determined that the state of the media server changes, and sends the updated playlist to the media playing device in the local area network. Since the playlist can be updated in real time in the embodiment of the present invention, the consistency between the playlist and the media source can be ensured, thereby providing the user with a continuously effective playlist, thereby improving the user's playing experience.
  • the program may be stored in a computer readable storage medium, and the storage medium may include: Read only memory (ROM, Read Only Memory), random access memory (RAM), disk or optical disk.

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Abstract

一种局域网中控制媒体资源播放的方法,包括:局域网中包括媒体服务器和媒体播放设备,则确定所述媒体服务器的状态发生变化时,更新保存的播放列表和播放列表元素表;向所述媒体播放设备发送更新后的播放列表。此外,还相应地提供一种播放列表处理装置和通信系统。

Description

局域网中媒体资源播放列表的处理方法、 装置和系统 技术领域
本发明涉及通信技术领域,具体涉及一种局域网中媒体资源播放列表的处 理方法、 装置和系统。
背景技术
随着电子数字技术的发展, 以及消费电子产品本身的普遍数字化, 家庭中 正出现越来越多的数字电子设备, 比如手机或相机等数字化娱乐设备, 以及个 人计算机或数字电视机等家电产品。如何将这些数字电子设备以有线或无线的 方式连接起来,构成一个可以实现内容共享或相互控制等功能的局域网, 比如 构成一个家庭网络, 是业界正在构想并努力实现的一个概念。 其中, 组成家庭 网络的数字电子设备称为家庭网络设备。
为了便于实现各种不同类型家庭网络设备的互通和控制,现有技术提出了 通用即插即用技术(UPnP, Universal Plug and Play ) 。 UPnP, 是各种各样的 数字电子设备实现遍布全球的对等网络连接(P2P, Peer-to-Peer ) 的结构。 在 UPnP体系中, 用户通过家庭网络中的控制点(CP, Control Point )设备来实现 对家庭网络设备的控制, 控制点设备采用 UPnP协议并通过调用支持 UPnP技术 的家庭网络设备(筒称 UPnP设备)的相关的控制命令(action ) , 来读取家庭 网络中 UPnP设备的状态信息, 以及控制 UPnP设备执行相应的操作。
为了实现家庭网络中多个 UPnP设备之间的媒体共享场景, UPnP定义了音 视频(AV, Audio and Video) 标准, 在该 AV标准中, 定义了三种装置: 媒体 服务器(MS, Media Server ) 、 媒体播放设备 ( MR, Media Renderer )和媒体 控制点 (AV CP, Audio and Video Control Point ) ; 其中, 媒体服务器是存储 媒体的设备, 媒体播放设备是媒体播放的设备, 而 AV CP则是控制以上两种设 备的装置, 可以通过 AV CP对媒体服务器的媒体资源浏览操作, 和对媒体服务 器的媒体播放操作, 来实现在媒体播放设备上播放媒体服务器中内容的功能, 例如, 参见图 la, 如果希望在数字电视机(即媒体播放设备)上看存储在手机 或数码相机(即媒体服务器)上的私人视频, 则 AV CP从手机或数码相机上获 取私人视频的内容信息, 然后生成一个播放列表(Playlist ) , 并将该播放列表 发送给数字电视机以进行存储, 以便数字电视机根据播放列表获取媒体资源 (即视频 )并播放媒体资源。
在对现有技术的研究和实践过程中,本发明的发明人发现, AV CP在媒体 服务器上生成并发送到媒体服务器的播放列表具有临时性,如果存储播放列表 相关联内容的媒体服务器下线、 或者网际协议( IP , Internet Protocol )地址改 变、 或者内容本身发生变化, 则播放列表部分或全部无效, 大大影响了用户的 播放体验。
发明内容
本发明实施例提供一种局域网中媒体资源播放列表的处理方法、装置和系 统, 可以提供一个持续有效的播放列表, 提高用户的播放体验。
一种局域网中媒体资源播放列表的处理方法, 其中,局域网中包括媒体服 务器和媒体播放设备, 则该方法包括:
确定所述媒体服务器的状态发生变化时,更新保存的播放列表和播放列表 元素表, 所述播放列表包括媒体资源的统一资源定位符和媒体资源的文件名 称, 所述播放列表元素表包括媒体资源标识、媒体服务器标识、媒体服务器的 网际协议地址和媒体资源的统一资源定位符中的至少一项;
向所述媒体播放设备发送更新后的播放列表。
一种播放列表处理装置, 包括: 的播放列表和播放列表元素表,所述播放列表包括媒体资源的统一资源定位符 和媒体资源的文件名称, 所述播放列表元素表包括媒体资源标识、媒体服务器 标识、 媒体服务器的网际协议地址和媒体资源的统一资源定位符中的至少一 项;
发送单元, 用于向局域网中的媒体播放设备发送生成的播放列表, 以及在 播放列表更新时, 向局域网中的媒体播放设备发送更新后的播放列表。
一种通信系统, 包括本发明实施例中提供的任一种播放列表处理装置。 播放列表和播放列表元素表,并向局域网中的媒体播放设备发送更新后的播放 列表。 由于本发明实施例可以实时更新播放列表, 所以可以保证播放列表与媒 体源的一致性,从而可以为用户提供一个持续有效的播放列表,提高用户的播 放体验。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例或现有技术描述中所需要使用的附图作筒单地介绍,显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例,对于本领域技术人员来讲,在不付出创 造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 la是现有技术局域网中播放媒体资源的场景示意图;
图 lb是本发明实施例提供的局域网中媒体资源播放列表的处理方法的流 程图;
图 2是本发明实施例提供的局域网中媒体资源播放列表的处理方法的另一 流程图;
图 3是本发明实施例提供的局域网中媒体资源播放列表的处理方法的又一 流程图;
图 4是本发明实施例提供的局域网中媒体资源播放列表的处理方法的另一 流程图;
图 5a是本发明实施例提供的播放列表处理装置的结构示意图;
图 5b是本发明实施例提供的播放列表处理装置的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域技术人员在没有作出创造性劳 动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
本发明实施例提供一种局域网中媒体资源播放列表的处理方法、装置和系 统。 以下分别进行详细说明。 实施例一、
本发明实施例将从播放列表处理装置的角度进行描述,该播放列表处理装 置具体可以是控制点, 或者, 该播放列表处理装置具体也可以包括控制点和中 心服务器, 即由控制点和中心服务器共同来执行操作; 其中, 控制点可以和媒 体播放设备、媒体服务器或中心服务器等集成在同一实体中,控制点也可以作 为一个独立的实体存在。
一种局域网中媒体资源播放列表的处理方法, 包括: 在确定局域网中的媒 体服务器的状态发生变化时, 更新保存的播放列表和播放列表元素表; 向局域 网中的媒体播放设备发送更新后的播放列表。
如图 lb所示, 具体流程可以如下:
101、 在确定局域网中的媒体服务器的状态发生变化时, 更新保存的播放 列表(Playlist )和播放列表元素表( Playlist元素表);
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息, 播放列表元素表中可以包括媒体资源标识 ( ResourcelD, Resource Identifier ),媒体服务器标识、媒体服务器的 IP地址和媒体资源的 URL中的至 少一项; 其中, 媒体服务器标识具体可以为媒体服务器的通用唯一识别码 ( UUID, Universal Unique Identifier )。
102、 向局域网中的媒体播放设备发送更新后的播放列表。 保存的播放列表和播放列表元素表,并向局域网中的媒体播放设备发送更新后 的播放列表。 由于本发明实施例可以实时更新播放列表, 所以可以保证播放列 表与媒体源的一致性,从而可以为用户提供一个持续有效的播放列表,提高用 户的播放体验。 实施例二、
根据实施例一所描述的方法,在步骤 "确定局域网中的媒体服务器的状态 发生变化时, 更新保存的播放列表和播放列表元素表(即步骤 101 )" 之前, 播放列表处理装置还可以生成播放列表和播放列表元素表,以及将生成的播放 列表和播放列表元素表发送给媒体播放设备, 例如, 如图 2所示, 该局域网中 媒体资源播放列表的处理方法的具体流程可以如下:
201、 向局域网中的媒体服务器获取媒体资源信息。
例如, 具体可以通过向媒体服务器发送浏览请求(BrowseO )或搜索请求 ( SearchQ )来获取媒体资源信息。 具体可以如下: 播放列表处理装置向媒体服务器发送浏览请求或搜索请求;
媒体服务器在接收到该浏览请求或搜索请求后,返回媒体资源信息给播放 列表处理装置。
其中, 媒体资源信息可以包括媒体资源标识、媒体服务器标识、媒体服务 器的网际协议( IP, Internet Protocol )地址、媒体资源的统一资源定位符( URL, Universal Resource Locator )等信息, 此外, 还可以包括媒体资源的文件名称 等信息。
202、 根据步骤 201获取到的媒体资源信息生成播放列表和播放列表元素 表, 并保存该生成的播放列表和播放列表元素表。
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息, 播放列表元素表中可以包括媒体资源标识、媒体服务器标识、媒体服务器 的 IP地址和媒体资源的 URL中的至少一项; 其中, 媒体服务器标识具体可以 为媒体服务器的 UUID。
203、 向局域网中的媒体播放设备发送生成的播放列表。
例如,具体可以向媒体播放设备请求调用 "设置静态播放列表"的活动类, 即 "SetStaticPlaylist()action" , 来向媒体播放设备下发播放列表。
204、 确定媒体服务器的状态发生变化时, 更新保存的播放列表和播放列 表元素表。
其中,媒体服务器的状态发生变化指的是媒体服务器的 IP地址发生变化、 媒体服务器下线或媒体服务器的媒体资源发生变化等场景,即步骤 204具体可 以为如下的任意一种或多种方式: 更新保存的播放列表和播放列表元素表; 例如, 具体可以如下:
接收媒体服务器发送的在线宣告消息, 比如筒单服务发现协议(SSDP,
Simple Service Discovery Protocol )消息, 其中, 该在线宣告消息中携带媒体服 务器的 IP地址和媒体服务器标识;
确定在线宣告消息中携带的媒体服务器的 IP地址和媒体服务器名标识, 与保存的播放列表元素表中的 IP地址和媒体服务器标识不一致时, 更新保存 的播放列表中与该 IP地址相关的内容, 以及更新播放列表元素表中的媒体服 务器的 IP地址。
比如,具体可以根据在线宣告消息中携带的媒体服务器名标识在保存的播 放列表元素表中查找到对应的 IP地址, 然后将在线宣告消息中携带的媒体服 务器的 IP地址与查找到的 IP地址进行比较, 若一致, 则不动作, 若一致, 则 更新保存的播放列表中与该 IP地址相关的内容,以及更新该查找到的 IP地址。
其中, 与该 IP地址相关的内容指的是与涉及到该 IP地址的相关记录, 比 如 URL, 等等。
( 2 )确定媒体服务器下线时, 更新保存的播放列表和播放列表元素表; 例如, 具体可以如下:
若接收到所述媒体服务器下线的消息,或在预置时间内没有接收到媒体服 务器发送的在线宣告消息 (比如 SSDP消息), 则确定该媒体服务器下线, 于 是删除保存的播放列表中与该媒体服务器对应的记录,或将保存的播放列表中 与所述媒体服务器对应的记录标记为不可用。
由于媒体服务器会定期地发送在线宣告消息给控制点或中心服务器, 所 以,如果控制点或中心服务器在一定的时间内没有接收到媒体服务器发送的在 线宣告消息, 则表明该媒体服务器已经下线, 所以此时可以将保存的播放列表 和播放列表元素表中与该媒体服务器对应的记录删除掉,以避免用户点击这些 无效的项目而导致用户体验质量下降。 其中, 该时间的大小可以根据实际应用 的需求进行设置。
( 3 )确定媒体服务器的媒体资源发生变化时, 更新保存的播放列表和播 放列表元素表; 例如, 具体可以如下:
接收媒体服务器上报的事件(Event ), 其中, 该事件指示所述媒体服务器 上发生变化的媒体资源;
根据接收到的事件更新保存的播放列表中与所述发生变化的媒体资源对 应的记录,以及根据该事件更新播放列表元素表中与所述发生变化的媒体资源 对应的 i己录。
比如, 具体可以根据事件确定媒体资源标识, 然后根据媒体资源标识中分 别在播放列表元素表和保存的播放列表中查找对应的记录(即在播放列表元素 表查找对应的记录, 以及在播放列表中查找对应的记录), 更新该记录中的媒 体资源的 URL, 以及更新播放列表中查找到的记录中的媒体资源的 URL。
205、 向局域网中的媒体播放设备发送更新后的播放列表, 以便媒体播放 设备利用该更新后的播放列表替换掉原来的播放列表, 这样, 当控制点查询媒 体播放设备的播放列表时, 就可以查询到该更新后的播放列表,从而可以保证 该播放列表与媒体源的一致性, 即保证该播放列表是有效的。
此外, 该局域网中控制媒体资源播放的方法还可以包括:
查询媒体播放设备上的播放列表;根据查询到的媒体播放设备上的播放列 表发送播放请求给媒体播放设备, 其中, 该播放请求中携带播放列表标识和媒 体资源标识,以便媒体播放设备根据播放列表标识和媒体资源标识播放媒体资 源。
其中, 媒体服务器具体可以为智能手机、 个人计算机、 数码相机、 笔记本 电脑、便携媒体播放器或移动硬盘等具有存储功能的终端设备。媒体播放设备 具体可以为数字电视机、笔记本电脑或个人计算机可以进行媒体展示的终端设 备。 据媒体资源信息生成播放列表和播放列表元素表并保存,将生成的播放列表发 送给局域网中的媒体播放设备, 然后在确定所述媒体服务器的状态发生变化 时, 更新保存的播放列表和播放列表元素表, 并向局域网中的媒体播放设备发 送更新后的播放列表。 由于本发明实施例可以实时更新播放列表, 所以可以保 证播放列表与媒体源的一致性,从而为用户提供一个持续有效的播放列表,提 高用户的播放体验。 实施例三、
根据实施例一和二所描述的方法, 以下将举例进行详细说明。
在本实施例中,将以该播放列表处理装置具体为控制点为例进行说明。其 中, 控制点具体可以集成在媒体播放设备中, 或者, 也可以集成在媒体服务器 中,或者,还可以集成中一些中间设备中, 比如机顶盒、 网关或接入点设备中, 或者, 还可以以独立的实体存在。
如图 3所示, 具体流程可以如下: 301、 控制点向局域网中的媒体服务器获取媒体资源信息;
例如, 具体可以通过向媒体服务器发送浏览请求(BrowseO )或搜索请求 ( Search() )来获取媒体资源信息, 具体可以如下:
控制点向媒体服务器发送浏览请求或搜索请求;
媒体服务器在接收到该浏览请求或搜索请求后,向控制点返回媒体资源信 息。
其中, 媒体资源信息可以包括媒体资源标识、媒体服务器标识、媒体服务 器的 IP地址、 媒体资源的 URL等信息, 此外, 还可以包括媒体资源的文件名称 等信息。
302、控制点根据步骤 301中获取到的媒体资源信息生成播放列表和播放列 表元素表, 并保存该生成的播放列表和播放列表元素表。
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息。 例如, 该播放列表的格式具体可 一, 如下:
Figure imgf000009_0001
Figure imgf000009_0002
用户可以通过播放列表选择需要在媒体播放设备上展示的媒体资源,比如 当用户需要在媒体播放设备上播放《张三历险记》, 则选择播放列表中文件名 称为 《张三历险记》 的选项。
其中, 播放列表元素表中可以包括媒体资源标识、媒体服务器标识、媒体 服务器的 IP地址和媒体资源的 URL中的一项或多项; 其中, 媒体服务器标识具 体可以为媒体服务器的 UUID。 以下实施例均以媒体服务器标识具体为 UUID 为例进行说明。 例如, 播放列表元素 式具体可参见表二, 如下: 媒体资源标识 媒体服务器标识 IP URL
( MS ID ) ResourcelD 1 UUID1 192.168.5.11 http://ip/contentl
ResourceID2 UUID2 192.168.5.9 http://ip/content2
303、 控制点向媒体播放设备发送生成的播放列表。
例如, 控制点可以通过向媒体播放设备请求调用 "设置静态播放列表" 的 活动类, 即 "SetStaticPlaylist()action" , 来向媒体播放设备下发播放列表。
其中, "SetStaticPlaylistO" 的参数具体可以包括该播放列表在媒体播放 设备上存储的标识(ID, Identity ) 、 播放列表的内容和播放列表字节长度等 信息, 比如, 参见表三。
Figure imgf000010_0001
Figure imgf000010_0002
其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, 即 该播放列表存储在媒体播放设备上时,媒体播放设备分配给播放列表的存储标 识, 用于指示该播放列表的存储位置, 以供查询和搜索; "PlaylistData" 表示 播放列表的内容, "PlaylistDataLength" 表示播放列表字节长度。 "IN" 表示 对应的参数的状态为 "输入" 。
304、 控制点通过在线宣告消息, 比如 SSDP消息 (以下均以 SSDP消息作 为在线宣告消息为例进行说明)监测局域网中媒体服务器的状态,确定媒体服 务器的状态发生变化时, 更新保存的播放列表和播放列表元素表。 例如, 具体 可以: ¾口下:
( 1 )控制点根据保存的播放列表元素表确定媒体服务器的 IP地址发生变 化时, 更新保存的播放列表和播放列表元素表; 例如, 具体可以如下: 控制点接收媒体服务器发送的 SSDP消息, 其中, 该 SSDP消息中携带媒 体服务器的 IP地址和媒体服务器标识;
控制点确定 SSDP消息中携带的媒体服务器的 IP地址和媒体服务器名标 识, 与保存的播放列表元素表中的 IP地址和媒体服务器标识不一致时, 更新保 存的播放列表中与该 IP地址相关的内容,以及更新播放列表元素表中的媒体服 务器的 IP地址。
比如, 如果 SSDP消息中携带的媒体服务器标识为 "UUID1" , 媒体服务 器的 IP地址为 "192.168.5.12" , 则根据表二可知, "UUID1" 所对应的媒体 服务器的 IP地址为 "192.168.5.11" , 与 SSDP消息中携带的媒体服务器的 IP地 址为 "192.168.5.12"不同,因此将表二的 "192.168.5.11"更新为 "192.168.5.12" , 并对播放列表中与 IP地址 "192.168.5.11" 相关的内容也进行更新, 比如将原 URL "http:// 192.168.5.11/contentl" 更新为 "http:〃 192.168.5.12/contentl" 。
( 2 )控制点确定媒体服务器下线时, 更新保存的播放列表和播放列表元 素表; 例如, 具体可以如下:
若接收到所述媒体服务器下线的消息,或在预置时间内没有接收到媒体服 务器发送的 SSDP消息, 则控制点确定该媒体服务器下线, 于是删除保存的播 放列表中与该媒体服务器对应的记录,或将保存的播放列表中与所述媒体服务 器对应的记录标记为 "不可用"。
由于媒体服务器会定期地发送 SSDP消息给控制点或中心服务器, 所以, 如果控制点或中心服务器在一定的时间内没有接收到媒体服务器发送的 SSDP 消息, 则表明该媒体服务器已经下线, 所以此时可以将保存的播放列表和播放 列表元素表中与该媒体服务器对应的记录删除掉,以避免用户点击这些无效的 项目而导致用户体验质量下降。其中, 该时间的大小可以根据实际应用的需求 进行设置。
( 3 )控制点确定媒体服务器的媒体资源发生变化时, 更新保存的播放列 表和播放列表元素表; 例如, 具体可以如下:
控制点接收媒体服务器上报的事件, 其中, 该事件指示所述媒体服务器上 发生变化的媒体资源;
根据接收到的事件更新保存的播放列表中与所述发生变化的媒体资源对 应的记录,以及根据该事件更新播放列表元素表中与所述发生变化的媒体资源 对应的 i己录。
比如, 具体可以根据事件确定媒体资源标识, 然后根据媒体资源标识中分 别在播放列表元素表和保存的播放列表中查找对应的记录(即在播放列表元素 表查找对应的记录, 以及在播放列表中查找对应的记录), 更新该记录中的媒 体资源的 URL, 以及更新播放列表中查找到的记录中的媒体资源的 URL。
305、 控制点向媒体播放设备发送更新后的播放列表。
例如, 控制点可以通过向媒体播放设备请求调用 "设置静态播放列表" 的 活动类, 即 "SetStaticPlaylist()action" , 来向媒体播放设备下发更新后的播放 列表。
其中, "SetStaticPlaylist(),, 的参数具体可以包括该播放列表在媒体播放 设备上存储的标识、 播放列表的内容和播放列表字节长度等信息, 比如, 参见 表四。
表四:
Figure imgf000012_0001
其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, 即 该播放列表存储在媒体播放设备上时,媒体播放设备分配给播放列表的存储标 识, 用于指示该播放列表的存储位置, 以供查询和搜索; "PlaylistData" 表示 播放列表的内容, "PlaylistDataLength" 表示播放列表字节长度。 "IN" 表示 对应的参数的状态为 "输入" 。
306、媒体播放设备将接收到的更新后的播放列表替换掉原来的播放列表。
307、 控制点查询媒体播放设备上的播放列表; 例如, 可以在媒体播放设备上新增一个活动类 (action ) : ScanPlaylist() action, 这样, 控制点就可以通过向媒体播放设备请求调用该 action来查询媒体 播放设备上存储的播放列表。
其中, "ScanPlaylist(),, 的参数具体可以包括该播放列表在媒体播放设备 上存储的标识、播放列表的内容和播放列表字节长度等信息,比如,参见表五。
表五:
Figure imgf000013_0002
其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, 即 该播放列表存储在媒体播放设备上时,媒体播放设备分配给播放列表的存储标 识, 用于指示该播放列表的存储位置, 以供查询和搜索; "PlaylistData" 表示 播放列表的内容, "PlaylistDataLength" 表示播放列表字节长度。 "IN" 表示 对应的参数的状态为 "输出" 。
308、控制点在媒体播放设备显示的至少一个播放列表中选择一个播放列 表, 并向媒体播放设备请求播放该播放列表, 比如, 控制点可以通过调用媒体 播放设备中的 "表示播放" 的活动类: Play() action, 来请求播放该播放列表。
其中, "Play(),, 的参数具体可以包括该播放列表在媒体播放设备上存储 的标识(ID, Identity ) 、 播放列表的内容项序号和播放速度等信息, 比如, 参见表六。
Figure imgf000013_0001
参数 ( Argument ) 方向 ( Direction ) 相 关 状 态 变 量
( RelatedState Variable )
InstancelD IN 该播放列表在媒体播放 设备上存储的标识
Index IN 播放列表的内容项序 号, 可以用来指示播放 哪一个内容
Speed IN 播放速度 其中, "InstancelD"表示该播放列表在媒体播放设备上存储的标识 "Index" 表示播放列表的内容项序号, "Speed" 表示播放速度。 "IN" 表示对应的参 数的状态为 "输入" 。
309、 媒体播放设备根据控制点选择的播放列表, 向媒体服务器请求媒体 资源。
例如, 媒体播放设备可以通过 "HTTP Get" 来向选择的播放列表中的 URI 所指向的媒体服务器请求媒体资源。
310、 媒体服务器向媒体播放设备传输媒体资源;
例如, 媒体服务器可以响应媒体播放设备的 "HTTP Get" 请求, 并向媒 体播放设备传输媒体资源。
311、 媒体播放设备播放该媒体资源。
由上可知,本实施例采用由控制点向局域网中的媒体服务器获取媒体资源 信息,根据媒体资源信息生成播放列表和播放列表元素表并保存,将生成的播 放列表发送给局域网中的媒体播放设备,然后在确定所述媒体服务器的状态发 生变化时, 更新保存的播放列表和播放列表元素表, 并向局域网中的媒体播放 设备发送更新后的播放列表,以便后续可以根据该更新后的播放列表播放媒体 资源。 由于本发明实施例可以实时更新播放列表, 所以可以保证播放列表与媒 体源的一致性,从而为用户提供一个持续有效的播放列表,提高用户的播放体 验。 实施例四、
与实施例三不同的是,在本实施例中,将以该播放列表处理装置具体为控 制点和中心服务器为例进行说明。其中,控制点具体可以集成在媒体播放设备 中, 或者, 也可以集成在媒体服务器或中心服务器中, 或者, 还可以集成中一 些中间设备中, 比如机顶盒、 网关或接入点设备中, 或者, 还可以以独立的实 体存在。 中心服务器具体可以为机顶盒、 网关或接入点设备等终端设备。 控制 点和中心服务器可以位于同一实体中, 可以位于不同的实体中。
如图 4所示, 具体流程可以如下:
401、 中心服务器向局域网中的媒体服务器获取媒体资源信息;
例如, 具体可以通过向媒体服务器发送浏览请求(BrowseO )或搜索请求 ( Search() )来获取媒体资源信息。 具体可以如下:
中心服务器向媒体服务器发送浏览请求或搜索请求;
媒体服务器在接收到该浏览请求或搜索请求后,向中心服务器返回媒体资 源信息。
其中, 媒体资源信息可以包括媒体资源标识、媒体服务器标识、媒体服务 器的 IP地址、 媒体资源的 URL等信息, 此外, 还可以包括媒体资源的文件名称 等信息。
402、 控制点对中心服务器进行关于生成播放列表的配置, 比如, 让中心 服务器生成局域网中所有后缀名为 "MP3" 的媒体文件的播放列表, 等等。
403、 中心服务器根据步骤 301中获取到的媒体资源信息和步骤 402中的配 置生成播放列表和播放列表元素表,并保存该生成的播放列表和播放列表元素 表。
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息。 例如, 该播放列表的格式具体可参见表七, 如下:
表七:
Figure imgf000015_0001
用户可以通过播放列表选择需要在媒体播放设备上展示的媒体资源,比如 当用户需要在媒体播放设备上播放《张三历险记》, 则选择播放列表中文件名 称为 《张三历险记》 的选项。 其中, 播放列表元素表中可以包括媒体资源标识、媒体服务器标识、媒体 服务器的 IP地址和媒体资源的 URL中的一项或多项; 其中, 媒体服务器标识具 体可以为媒体服务器的 UUID。 以下实施例均以媒体服务器标识具体为 UUID 为例进行说明。 例如, 播放列表元素表的格式具体可参见表八, 如下:
表八:
Figure imgf000016_0001
404、 控制点获取中心服务器上的播放列表;
例如,可以在中心服务器上新增一个活动类( action ) : ScanPlaylist() action, 这样, 控制点就可以通过请求调用该 action来获取中心服务器上存储的播放列 表。
其中, "ScanPlaylist(),, 的参数具体可以包括该播放列表在媒体播放设备 上存储的标识、播放列表的内容和播放列表字节长度等信息,比如,参见表九。
表九:
Figure imgf000016_0002
其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, "PlaylistData" 表示播放列表的内容, "PlaylistDataLength" 表示播放列表字 节长度。 "IN" 表示对应的参数的状态为 "输出" 。
405、 控制点将获取到的播放列表发送给媒体播放设备。 例如, 控制点可以通过向媒体播放设备请求调用 "设置静态播放列表" 的 活动类, 即 "SetStaticPlaylist()action" , 来向媒体播放设备下发播放列表。
其中, "SetStaticPlaylist(),, 的参数具体可以包括该播放列表在媒体播放 设备上存储的标识(ID, Identity ) 、 播放列表的内容和播放列表字节长度等 信息, 比如, 参见表十。
表十:
Figure imgf000017_0001
其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, "PlaylistData" 表示播放列表的内容, "PlaylistDataLength" 表示播放列表字 节长度。 "IN" 表示对应的参数的状态为 "输入" 。
406、 中心服务器通过在线宣告消息, 比如 SSDP消息来监测局域网中媒体 服务器的状态,确定媒体服务器的状态发生变化时, 更新保存的播放列表和播 放列表元素表。 例如, 具体可以如下:
( 1 )中心服务器根据保存的播放列表元素表确定媒体服务器的 IP地址发 生变化时, 更新保存的播放列表和播放列表元素表; 例如, 具体可以如下: 中心服务器接收媒体服务器发送的 SSDP消息, 其中, 该 SSDP消息中携 带媒体服务器的 IP地址和媒体服务器标识;
中心服务器确定 SSDP消息中携带的媒体服务器的 IP地址和媒体服务器名 标识, 与保存的播放列表元素表中的 IP地址和媒体服务器标识不一致时, 更新 保存的播放列表中与该 IP地址相关的内容,以及更新播放列表元素表中的媒体 服务器的 IP地址。
比如, 如果 SSDP消息中携带的媒体服务器标识为 "UUID1" , 媒体服务 器的 IP地址为 "192.168.5.12" , 则根据表二可知, "UUID1" 所对应的媒体 服务器的 IP地址为 "192.168.5.11" , 与 SSDP消息中携带的媒体服务器的 IP地 址为 "192.168.5.12"不同,因此将表二的 "192.168.5.11"更新为 "192.168.5.12" , 并对播放列表中与 IP地址 "192.168.5.11" 相关的内容也进行更新。
( 2 ) 中心服务器确定媒体服务器下线时, 更新保存的播放列表和播放列 表元素表; 例如, 具体可以如下:
若接收到所述媒体服务器下线的消息,或在预置时间内没有接收到媒体服 务器发送的 SSDP消息, 则中心服务器确定该媒体服务器下线, 于是删除保存 的播放列表中与该媒体服务器对应的记录,或将保存的播放列表中与所述媒体 服务器对应的记录标记为 "不可用"。
由于媒体服务器会定期地发送 SSDP消息给控制点或中心服务器, 所以, 如果控制点或中心服务器在一定的时间内没有接收到媒体服务器发送的 SSDP 消息, 则表明该媒体服务器已经下线, 所以此时可以将保存的播放列表和播放 列表元素表中与该媒体服务器对应的记录删除掉,以避免用户点击这些无效的 项目而导致用户体验质量下降。其中, 该时间的大小可以根据实际应用的需求 进行设置。
( 3 ) 中心服务器确定媒体服务器的媒体资源发生变化时, 更新保存的播 放列表和播放列表元素表; 例如, 具体可以如下:
中心服务器接收媒体服务器上报的事件, 其中, 该事件指示所述媒体服务 器上发生变化的媒体资源;
中心服务器根据事件更新保存的播放列表中与所述发生变化的媒体资源 对应的记录,以及根据该事件更新播放列表元素表中与所述发生变化的媒体资 源对应的 i己录。
比如, 中心服务器具体可以根据事件确定媒体资源标识, 然后根据媒体资 源标识中分别在播放列表元素表和保存的播放列表中查找对应的记录(即在播 放列表元素表查找对应的记录, 以及在播放列表中查找对应的记录), 更新该 记录中的媒体资源的 URL,以及更新播放列表中查找到的记录中的媒体资源的 URL。
407、 中心服务器向媒体播放设备发送更新后的播放列表。
例如,中心服务器可以通过向媒体播放设备请求调用 "设置静态播放列表" 的活动类, 即 "SetStaticPlaylist()action" , 来向媒体播放设备下发更新后的播 放列表。
其中, "SetStaticPlaylist(),, 的参数具体可以包括该播放列表在媒体播放 设备上存储的标识、 播放列表的内容和播放列表字节长度等信息, 比如, 参见 表十一。
表十一:
Figure imgf000019_0002
其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, "PlaylistData" 表示播放列表的内容, "PlaylistDataLength" 表示播放列表字 节长度。 "IN" 表示对应的参数的状态为 "输入" 。
408、媒体播放设备将接收到的更新后的播放列表替换掉原来的播放列表。
409、 控制点查询媒体播放设备上的播放列表;
例如, 可以在媒体播放设备上新增一个活动类 (action ) : ScanPlaylist() action, 这样, 控制点就可以通过请求调用该 action来查询媒体播放设备上存储 的播放列表。
其中, "ScanPlaylist(),, 的参数具体可以包括该播放列表在媒体播放设备 上存储的标识、播放列表的内容和播放列表字节长度等信息, 比如, 参见表十
Figure imgf000019_0001
参数 ( Argument ) 方向 ( Direction ) 相 关 状 态 变 量
( RelatedState Variable )
InstancelD OUT 该播放列表在媒体播放 设备上存储的标识
PlaylistData OUT 播放列表的内容
PlaylistDataLength OUT 播放列表字节长度 其中, "InstancelD" 表示该播放列表在媒体播放设备上存储的标识, "PlaylistData" 表示播放列表的内容, "PlaylistDataLength" 表示播放列表字 节长度。 "IN" 表示对应的参数的状态为 "输出" 。
410、控制点在媒体播放设备显示的至少一个播放列表中选择一个播放列 表, 并向媒体播放设备请求播放该播放列表, 比如, 控制点可以通过调用媒体 播放设备中的 "表示播放" 的活动类: Play() action, 来请求播放该播放列表。
其中, "Play(),, 的参数具体可以包括该播放列表在媒体播放设备上存储 的标识(ID, Identity ) 、 播放列表的内容项序号和播放速度等信息, 比如, 参见十三。
Figure imgf000020_0001
Figure imgf000020_0002
其中, "InstancelD"表示该播放列表在媒体播放设备上存储的标识 "Index" 表示播放列表的内容项序号, "Speed" 表示播放速度。 "IN" 表示对应的参 数的状态为 "输入" 。
411、 媒体播放设备根据控制点选择的播放列表, 向媒体服务器请求媒体 资源。
例如, 媒体播放设备可以通过 "HTTP Get" 来向选择的播放列表中的 URI 所指向的媒体服务器请求媒体资源。
412、 媒体服务器向媒体播放设备传输媒体资源;
例如, 媒体服务器可以响应媒体播放设备的 "HTTP Get" 请求, 并向媒 体播放设备传输媒体资源。
413、 媒体播放设备播放该媒体资源。
由上可知,本实施例采用由中心服务器向局域网中的媒体服务器获取媒体 资源信息,根据媒体资源信息生成播放列表和播放列表元素表并保存,将生成 的播放列表通过控制点发送给局域网中的媒体播放设备,然后在确定所述媒体 服务器的状态发生变化时, 更新保存的播放列表和播放列表元素表, 并向局域 网中的媒体播放设备发送更新后的播放列表,以便后续可以根据该更新后的播 放列表播放媒体资源。 由于本发明实施例可以实时更新播放列表, 所以可以保 证播放列表与媒体源的一致性,从而为用户提供一个持续有效的播放列表,提 高用户的播放体验。 实施例五、
为了更好地实现以上方法,本发明实施例还相应地提供一种播放列表处理 装置, 如图 5a所示, 该播放列表处理装置包括更新单元 503和发送单元 504; 保存的播放列表和播放列表元素表;
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息, 播放列表元素表中可以包括媒体资源标识、媒体服务器标识、媒体服务器 的 IP地址和媒体资源的 URL中的至少一项; 其中, 媒体服务器标识具体可以 为媒体服务器的 UUID。
发送单元 504, 用于在播放列表更新时, 向局域网中的媒体播放设备发送 更新后的播放列表。
此外, 如图 5b所示, 该播放列表处理装置还可以包括获取单元 501和生 成单元 502;
获取单元 501 , 用于向局域网中的媒体服务器获取媒体资源信息; 例如,具体可以通过向媒体服务器请求浏览请求或搜索请求来获取媒体资 源信息。
其中, 媒体资源信息可以包括媒体资源标识、媒体服务器标识、媒体服务 器的 IP地址、 媒体资源的 URL等信息, 此外, 还可以包括媒体资源的文件名 称等信息。
其中, 媒体资源信息可以包括媒体资源标识、媒体服务器标识、媒体服务 器的网际协议( IP, Internet Protocol )地址、媒体资源的统一资源定位符( URL, Universal Resource Locator )等信息, 此外, 还可以包括媒体资源的文件名称 等信息。
生成单元 502, 用于根据获取单元 501获取到的媒体资源信息生成播放列 表和播放列表元素表, 并保存所述播放列表和播放列表元素表;
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息, 播放列表元素表中可以包括媒体资源标识、媒体服务器标识、媒体服务器 的 IP地址和媒体资源的 URL中的至少一项; 其中, 媒体服务器标识具体可以 为媒体服务器的 UUID。
则此时,更新单元 503 ,具体用于确定所述媒体服务器的状态发生变化时, 更新生成单元 502保存的播放列表和播放列表元素表;
发送单元 504, 具体用于向局域网中的媒体播放设备发送生成单元 502生 成的播放列表, 以及在播放列表更新时, 向局域网中的媒体播放设备发送更新 单元 503更新后的播放列表。
例如,具体可以向媒体播放设备请求调用 "设置静态播放列表"的活动类, 即 "SetStaticPlaylist()action" , 来向媒体播放设备下发播放列表。
其中,媒体服务器的状态发生变化指的是媒体服务器的 IP地址发生变化、 媒体服务器下线或媒体服务器的媒体资源发生变化等场景, 即所述更新单元 503包括第一更新子单元、 和 /或第二更新子单元、 和 /或第三更新子单元; 第一更新子单元,具体可以用于根据保存的播放列表元素表确定所述媒体 服务器的网际协议地址发生变化时, 更新保存的播放列表和播放列表元素表; 第二更新子单元, 具体可以用于确定所述媒体服务器下线时, 更新保存的 播放列表和播放列表元素表;
第三更新子单元,具体可以用于确定所述媒体服务器的媒体资源发生变化 时, 更新保存的播放列表和播放列表元素表。
例如, 其中, 第一更新子单元, 具体可以用于接收媒体服务器发送的在线 宣告消息, 该在线宣告消息中携带媒体服务器的 IP地址和媒体服务器标识; 确定在线宣告消息中携带的媒体服务器的 IP地址和媒体服务器名标识, 与保 存的播放列表元素表中的 IP地址和媒体服务器标识不一致时, 更新保存的播 放列表中与 IP相关的内容, 比如 URL, 以及更新播放列表元素表中的媒体服 务器的 IP。 和 /或,
第二更新子单元,具体可以用于若在预置时间内没有接收到所述媒体服务 器发送的在线宣告消息, 则确定该媒体服务器下线,删除保存的播放列表中与 所述媒体服务器对应的记录,或将保存的播放列表中与所述媒体服务器对应的 记录标记为不可用。 和 /或,
第三更新子单元, 具体可以用于接收媒体服务器上报的事件, 该事件指示 所述媒体服务器上发生变化的媒体资源;根据接收到的事件更新保存的播放列 表中与所述发生变化的媒体资源对应的记录,以及根据该事件更新播放列表元 素表中与所述发生变化的媒体资源对应的记录。
其中, 在线宣告消息具体可以为 SSDP消息。
此外, 该播放列表处理装置还可以包括查询列表单元和请求播放单元; 查询列表单元, 用于查询媒体播放设备上的播放列表;
请求播放单元,用于根据查询到的媒体播放设备上的播放列表发送播放请 求给媒体播放设备, 其中, 该播放请求中携带播放列表标识和媒体资源标识, 以便媒体播放设备根据播放列表标识和媒体资源标识播放媒体资源。
具体实施时, 以上各个单元可以作为独立的实体来实现,也可以进行任意 组合,作为同一或若干个实体来实现。 以上各个单元的具体实施可参见前面的 实施例, 在此不再赘述。
该播放列表处理装置具体可以是控制点, 或者, 该播放列表处理装置具体 也可以包括控制点和中心服务器, 即由控制点和中心服务器共同来执行操作。 其中, 控制点具体可以和媒体播放设备集成在同一实体中, 或者, 也可以和媒 体服务器集成在同一实体中, 或者, 还可以和中心服务器集成在同一实体中, 或者, 还可以以独立的实体存在。 中心服务器具体可以为机顶盒、 网关或接入 点设备等终端设备。控制点和中心服务器可以位于同一实体中, 可以位于不同 的实体中。
其中, 媒体服务器具体可以为智能手机、 个人计算机、 数码相机、 笔记本 电脑、便携媒体播放器或移动硬盘等具有存储功能的终端设备。媒体播放设备 具体可以为数字电视机、笔记本电脑或个人计算机可以进行媒体展示的终端设 备。
由上可知, 本实施例的播放列表处理装置的获取单元 501可以向局域网中 的媒体服务器获取媒体资源信息, 由生成单元 502根据媒体资源信息生成播放 列表和播放列表元素表并保存, 然后由发送单元 504将生成的播放列表发送给 化时, 更新保存的播放列表和播放列表元素表, 并通过发送单元 504向将更新 后的播放列表发送给媒体播放设备。 由于本发明实施例可以实时更新播放列 表, 所以可以保证播放列表与媒体源的一致性,从而为用户提供一个持续有效 的播放列表, 提高用户的播放体验。 实施例六、
相应的, 本发明实施例还提供一种通信系统, 包括本发明实施例提供的任 意一种播放列表处理装置, 其中, 播放列表处理装置具体可参见实施例五。 例 ^口, 以^口下:
播放列表处理装置, 用于向局域网中的媒体服务器获取媒体资源信息,根 据该媒体资源信息生成播放列表和播放列表元素表,并保存该播放列表和播放 列表元素表; 在确定所述媒体服务器的状态发生变化时, 更新保存的播放列表 和播放列表元素表; 向局域网中的媒体播放设备发送更新后的播放列表。
其中, 播放列表中可以包括媒体资源的 URL和媒体资源的文件名称等信 息, 播放列表元素表中可以包括媒体资源标识、媒体服务器标识、媒体服务器 的 IP地址和媒体资源的 URL中的至少一项; 其中, 媒体服务器标识具体可以为 媒体服务器的 UUID。
其中, 媒体服务器的状态发生变化指的是媒体服务器的 IP地址发生变化、 媒体服务器下线或媒体服务器的媒体资源发生变化等场景, 即: 播放列表处理装置,具体用于根据保存的播放列表元素表确定所述媒体服 务器的网际协议地址发生变化时,更新保存的播放列表和播放列表元素表;或, 确定所述媒体服务器下线时, 更新保存的播放列表和播放列表元素表; 或, 确 定所述媒体服务器的媒体资源发生变化时,更新保存的播放列表和播放列表元 素表。 例如, 具体可以如下: 更新保存的播放列表和播放列表元素表; 例如, 具体可以如下:
接收媒体服务器发送的在线宣告消息, 其中, 该在线宣告消息中携带媒体 服务器的 IP地址和媒体服务器标识;
确定在线宣告消息中携带的媒体服务器的 IP地址和媒体服务器名标识, 与保存的播放列表元素表中的 IP地址和媒体服务器标识不一致时, 更新保存 的播放列表中与该 IP地址相关的内容, 比如 URL, 以及更新播放列表元素表 中的媒体服务器的 IP地址。
( 2 )确定媒体服务器下线时, 更新保存的播放列表和播放列表元素表; 例如, 具体可以如下:
若在预置时间内没有接收到媒体服务器发送的在线宣告消息,则确定该媒 体服务器下线, 于是删除保存的播放列表中与该媒体服务器对应的记录, 或将 保存的播放列表中与所述媒体服务器对应的记录标记为不可用。
( 3 )确定媒体服务器的媒体资源发生变化时, 更新保存的播放列表和播 放列表元素表; 例如, 具体可以如下:
接收媒体服务器上报的事件, 其中, 该事件根据接收到的事件更新保存的 播放列表中与所述发生变化的媒体资源对应的记录,以及根据该事件更新播放 其中, 该在线宣告消息具体可以为 SSDP消息。
播放列表处理装置,还用于查询媒体播放设备上的播放列表; 根据查询到 的媒体播放设备上的播放列表发送播放请求给媒体播放设备, 其中, 该播放请 求中携带播放列表标识和媒体资源标识,以便媒体播放设备根据播放列表标识 和媒体资源标识播放媒体资源。
此外, 该通信系统还可以包括媒体播放设备和媒体服务器, 媒体播放设备, 用于接收播放列表处理装置发送的播放列表, 以及接收播 放列表处理装置发送的播放请求,根据播放列表处理装置的播放请求向媒体服 务器获取媒体资源, 并播放媒体资源。
媒体服务器, 用于发送媒体资源信息给播放列表处理装置, 以及向媒体播 放设备提供播放资源。
以上各个设备的具体实施可参见前面的实施例, 在此不再赘述。
由上可知,本实施例的通信系统的播放列表处理装置采用向局域网中的媒 体服务器获取媒体资源信息,根据媒体资源信息生成播放列表和播放列表元素 表并保存,将生成的播放列表发送给局域网中的媒体播放设备, 然后在确定所 述媒体服务器的状态发生变化时, 更新保存的播放列表和播放列表元素表, 并 向局域网中的媒体播放设备发送更新后的播放列表。由于本发明实施例可以实 时更新播放列表, 所以可以保证播放列表与媒体源的一致性,从而为用户提供 一个持续有效的播放列表, 提高用户的播放体验。 本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步 骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读 存储介质中, 存储介质可以包括: 只读存储器(ROM, Read Only Memory ), 随机存取记忆体(RAM, Random Access Memory ) , 磁盘或光盘等。
以上对本发明实施例所提供的一种局域网中媒体资源播放列表的处理方 法、装置和系统进行了详细介绍, 本文中应用了具体个例对本发明的原理及实 施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核 心思想; 同时, 对于本领域的技术人员, 依据本发明的思想, 在具体实施方式 及应用范围上均会有改变之处, 综上所述, 本说明书内容不应理解为对本发明 的限制。

Claims

权 利 要 求
1、 一种局域网中媒体资源播放列表的处理方法, 其特征在于, 局域网中 包括媒体服务器和媒体播放设备, 则该方法包括:
确定所述媒体服务器的状态发生变化时,更新保存的播放列表和播放列表 元素表, 所述播放列表包括媒体资源的统一资源定位符和媒体资源的文件名 称, 所述播放列表元素表包括媒体资源标识、媒体服务器标识、媒体服务器的 网际协议地址和媒体资源的统一资源定位符中的至少一项;
向所述媒体播放设备发送更新后的播放列表。
2、 根据权利要求 1所述的方法, 其特征在于, 所述确定所述媒体服务器 的状态发生变化时, 更新保存的播放列表和播放列表元素表之前, 还包括: 向所述媒体服务器获取媒体资源信息;
根据所述媒体资源信息生成播放列表和播放列表元素表,并保存所述播放 列表和播放列表元素表;
向所述媒体播放设备发送生成的播放列表。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述确定所述媒体服 务器的状态发生变化时, 更新保存的播放列表和播放列表元素表, 包括:
根据保存的播放列表元素表确定所述媒体服务器的网际协议地址发生变 化时, 更新保存的播放列表和播放列表元素表; 或,
确定所述媒体服务器下线时,更新保存的播放列表和播放列表元素表;或, 确定所述媒体服务器的媒体资源发生变化时,更新保存的播放列表和播放 列表元素表。
4、 根据权利要求 3所述的方法, 其特征在于, 所述根据保存的播放列表 元素表确定所述媒体服务器的网际协议地址发生变化时,更新保存的播放列表 和播放列表元素表, 包括:
接收所述媒体服务器发送的在线宣告消息,所述在线宣告消息中携带媒体 服务器的网际协议地址和媒体服务器标识;
确定所述在线宣告消息中携带的媒体服务器的网际协议地址和媒体服务 器标识,与保存的播放列表元素表中的网际协议地址和媒体服务器标识不一致 时, 更新保存的播放列表中与网际协议地址相关的内容, 以及更新播放列表元 素表中的媒体服务器的网际协议地址。
5、 根据权利要求 3所述的方法, 其特征在于, 所述确定所述媒体服务器 下线时, 更新保存的播放列表和播放列表元素表, 包括:
若接收到所述媒体服务器下线的消息或在预置时间内没有接收到所述媒 体服务器发送的在线宣告消息, 则确定所述媒体服务器下线,删除保存的播放 列表中与所述媒体服务器对应的记录,或将保存的播放列表中与所述媒体服务 器对应的记录标记为不可用。
6、 根据权利要求 3所述的方法, 其特征在于, 所述确定所述媒体服务器 的媒体资源发生变化时, 更新保存的播放列表和播放列表元素表, 包括: 接收所述媒体服务器上报的事件,所述事件指示所述媒体服务器上发生变 化的媒体资源,根据所述事件更新保存的播放列表中与所述发生变化的媒体资 源对应的记录,以及根据所述事件更新播放列表元素表中与所述发生变化的媒 体资源对应的记录。
7、 根据权利要求 1至 6中任一项所述的方法, 其特征在于, 所述方法还 包括:
查询所述媒体播放设备上的播放列表;
根据查询到的媒体播放设备上的播放列表发送播放请求给媒体播放设备, 所述播放请求中携带播放列表标识和媒体资源标识,以便媒体播放设备根据播 放列表标识和媒体资源标识播放媒体资源。
8、 一种播放列表处理装置, 其特征在于, 包括: 的播放列表和播放列表元素表,所述播放列表包括媒体资源的统一资源定位符 和媒体资源的文件名称, 所述播放列表元素表包括媒体资源标识、媒体服务器 标识、 媒体服务器的网际协议地址和媒体资源的统一资源定位符中的至少一 项;
发送单元, 用于在播放列表更新时, 向局域网中的媒体播放设备发送更新 后的播放列表。
9、 根据权利要求 8所述的播放列表处理装置, 其特征在于, 还包括: 获取单元, 用于向局域网中的媒体服务器获取媒体资源信息; 生成单元, 用于根据所述媒体资源信息生成播放列表和播放列表元素表, 并保存所述播放列表和播放列表元素表;
发送单元, 用于向局域网中的媒体播放设备发送生成的播放列表。
10、 根据权利要求 8或 9所述的播放列表处理装置, 其特征在于, 所述更 新单元包括:
第一更新子单元,具体用于根据保存的播放列表元素表确定所述媒体服务 器的网际协议地址发生变化时, 更新保存的播放列表和播放列表元素表; 和 / 或,
第二更新子单元, 具体用于确定所述媒体服务器下线时, 更新保存的播放 列表和播放列表元素表; 和 /或,
第三更新子单元, 具体用于确定所述媒体服务器的媒体资源发生变化时, 更新保存的播放列表和播放列表元素表。
11、 根据权利要求 10所述的播放列表处理装置, 其特征在于,
所述第一更新子单元, 具体用于接收所述媒体服务器发送的在线宣告消 息, 所述在线宣告消息中携带媒体服务器的网际协议地址和媒体服务器标识;
保存的播放列表中与网际协议地址相关的内容,以及更新播放列表元素表中的 媒体服务器的网际协议地址。
12、 根据权利要求 10所述的播放列表处理装置, 其特征在于,
所述第二更新子单元,具体用于若接收到所述媒体服务器下线的消息或在 预置时间内没有接收到所述媒体服务器发送的在线宣告消息,则确定所述媒体 服务器下线,删除保存的播放列表中与所述媒体服务器对应的记录, 或将保存 的播放列表中与所述媒体服务器对应的记录标记为不可用。
13、 根据权利要求 10所述的播放列表处理装置, 其特征在于,
所述第三更新子单元, 具体用于接收所述媒体服务器上报的事件, 所述事 件指示所述媒体服务器上发生变化的媒体资源,根据所述事件更新保存的播放 列表中与所述发生变化的媒体资源对应的记录,以及根据所述事件更新播放列 表元素表中与所述发生变化的媒体资源对应的记录。
14、根据权利要求 8至 13任一项所述的播放列表处理装置, 其特征在于, 还包括:
查询列表单元, 用于查询所述媒体播放设备上的播放列表;
请求播放单元,用于根据查询到的媒体播放设备上的播放列表发送播放请 求给媒体播放设备, 所述播放请求中携带播放列表标识和媒体资源标识, 以便 媒体播放设备根据播放列表标识和媒体资源标识播放媒体资源。
15、 一种通信系统, 其特征在于, 包括权利要求 8至 14中任一项所述的 播放列表处理装置。
PCT/CN2012/076147 2012-05-28 2012-05-28 局域网中媒体资源播放列表的处理方法、装置和系统 WO2013177734A1 (zh)

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US13/689,122 US9092462B2 (en) 2012-05-28 2012-11-29 Method, apparatus, and system for processing media resource playlist in local area network
US14/707,667 US9773001B2 (en) 2012-05-28 2015-05-08 Method, apparatus, and system for processing media resource playlist in local area network

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JP5925304B2 (ja) 2016-05-25
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KR101421566B1 (ko) 2014-07-22
EP2696295B1 (en) 2019-08-07
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CN103608800B (zh) 2018-09-07
KR20140000618A (ko) 2014-01-03

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