An Open Source Software Framework For Dvb Transmissions' title='An Open Source Software Framework For Dvb Transmissions' />OIPF Release 2 Specification.D. 1 Introduction.There are many different usage models and scenarios that one can.This includes usage.InformationWeek. com News, analysis and research for business technology professionals, plus peertopeer knowledge sharing.Engage with our community.Digital terrestrial television DTTV or DTT is a technological evolution of broadcast television and an advancement over analog television.DTTV broadcasts land.This informative annex aims to.However, this annex will only.In the figure below these are indicated by dotted lines.The main scenario that we envision is the following Figure 1.Main scenario. The OITF shows the UI of the Co.D store. With this UI the user is.Co. D store to do things, such as user.Co. D store, and.This can be done inside the browser using a standard CE HTML interface.In the figure above, this is identified by interface a.In those deployments where the OITF supports the metadata CG client, an.D0%9E%D1%80%D0%B8%D0%B3%D0%B8%D0%BD%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5-zgemma-h-2s-%D0%B4%D0%B2%D0%BE%D0%B9%D0%BD%D0%BE%D0%B9-%D1%82%D1%8E%D0%BD%D0%B5%D1%80-dvb-s2-dvb-s2-%D0%B4%D0%B2%D1%83%D1%85%D1%8A%D1%8F%D0%B4%D0%B5%D1%80%D0%BD%D1%8B%D0%B9-%D1%81%D0%BF%D1%83%D1%82%D0%BD%D0%B8%D0%BA%D0%BE%D0%B2%D0%BE%D0%B5-%D0%BF%D1%80%D0%B8%D0%B5%D0%BC%D0%BD%D0%B8%D0%BA-enigma-2.jpg' alt='An Open Source Software Framework For Dvb Transmissions' title='An Open Source Software Framework For Dvb Transmissions' />DAE application can make use of metadata.CG client. This is identified by interface.After purchasingselection of the content the selected content.To this end, the download manager or the AV.This is done by using a special descriptor, with an easily.MIME type applicationvnd.Content. Access. Downloadxml in case of download, and applicationvnd.Content. Access. Streamingxml in case of streaming.This is indicated by interfaces d.For certain steps in these interactions, the Co.D store may need to.DRM agent. This can be done by talking directly to the.DRM agent during a browser session using interfaces b.Alternatively, the lt DRMControl.Information element of the content.DRM specific messages to the DRM.This is indicated by interface d.Note that both the DRM agent and Download manager are autonomous.They will have their.These interactions are identified by interfaces.The download manager or AV player fetch the content, as indicated by interfaces d.Once the content is fetched, playback can be started in the AV.When the stream is protected, the AV player will have to get a.DRM agent using interface f.D. 2 List of interfaces.Interface a browse, select and purchase content from Co.D store. This interface is used to interact with the Co.D store for operations.Co. D. store, and purchase a license.This is a standard CE HTMLHTTP.Interface b In session interaction from web page with underlying DRM agent.Interface b. 0 and the related interface b.Drm. Agent Java. Script embedded object interface as defined.This interface will allow messages to be exchanged between pages from.Co. D store and the underlying DRM agent, whilst the user is having a.Co. D store. Examples of these messages.Marlin Action tokens.This is useful to enable scenarios, such as. Honda Atc 200S Repair Manual Pdf . The interface basically consists of one method send.DRMMessageString.Type, String msg, which is very generic in the sense that any kind.The exact payload and types of messages.OIPFCSP2. An example of such message could be plugin.Element document.Element. By. IDdrmplugin.Element. send. DRMMessageapplicationvnd.Drm. Agent. Note that this API is designed to be asynchronous in nature, because.Therefore. it is not wise to make the method synchronous, since that could block.Java. Script engine.To this end we have defined an event handler.DRMMessage. Result, to register a callback function that will be called.DRM agent completed handling of the message.For example function callback.FString msg. ID, String result.Msg, Integer result.Code. document. Element.By. IDdrmplugin. DRMMessage.Result callback. F.An equivalent DOM2 event is also generated.Content authors should be.API. Only after having received.DRM agent has. handled the DRM message.The service author may need to define some.Interface c Autonomous out of session interaction between DRM agent and Co.D store. Interface c.DRM agent, the Co.D store, the license server, etc.OIPFCSP2. The interaction is typically done outside the scope of the browser, and.In the few cases where the user.In some of these the.DRM agent would need to open a web page to the originating Co.D store. so that the user could resolve the issue directly with the store e.URL extracted from the MPEG2TS.Since the user could.Therefore, the DRM agent could issue a notification event that will get.The user. would be notified that his attention is required with respect to the.DRM agent, and can then decide to take action and launch the browser.In the figure above, these UI interactions are identified by.These interfaces however are typically local inside.OITF, and are not specified in more detail.Interface d Downloading content.These interfaces are used for downloading content.In order to. trigger the download, a special content access descriptor the content.MIME type applicationvnd.Content. Access. Downloadxml.This descriptor contains all the relevant data related to.This content access descriptor is typically provided.Co. D store. A browser application can fetch this descriptor in.XMLHttp. Request.This is identified by interface d.The content access.MIME type are defined in Annex E.It contains elements, such as lt Content.URL which indicates where.Metadata. URL to indicate.Interface d. 1 and related interface d.This is done by handing over the.Download on the applicationoipf.Download. Trigger.XMLHttp. Request.Once the download is registered, the download.Since this may be.By making the download manager an independent process.Interface d. 3 is a local interface that is used to pass optional DRM.Download. manager to the DRM agent.These messages are included as part of one or.DRMControl. Information element inside the content access download descriptor as defined by Annex E.These may include messages such as a Marlin preview license in cases.Interface d. 4 is the actual interface for downloading the content.The. protocols that can be used for downloading content are defined in the.Open ITPV Forum Protocols specification document.The default protocol.HTTP, with support for HTTP Range requests.The HTTP Range requests.Interface d. 5 defines an interface to enable error recovery for the.It could be used to recover from errors or other.An example usage is as.Co. D store the OITF may synchronize with the Co.D store by issuing a.HTTP GET request to the URL of element lt Origin.Site concatenated with synchronize.IPTV. application offering the content download replies with an XML document.IDs that had previously been.IPTV. application offering the content download still remembers which content a.UTF 8. lt xs schema xmlns xshttp www.XMLSchema element.Form. Defaultqualified.Form. Defaultunqualified.Synchronize. Type.Type nameSynchronize.Type. lt xs sequence.Content. Type. Type.Type nameContent.Type. lt xs sequence.ID typexs string min.Occurs0. max. Occursunbounded.Type. lt xs schema.Example lt synchronizelist.ID item 1lt contentID.ID item 2lt contentID.NOTE To authenticate the user, cookies or single sign on may be used.The OITF may use this.Refetching the content is done by issuing a secure HTTP GET request to.URL lt Origin. Site synchronize a lt contentID value.DRM agent to redownload the content and related.Interface d. 6 Although the download manager is an autonomous.To this end, the download manager will typically.In retail deployments this is typically a local user interface, for.However, since it may be useful.Status. View has been defined by which a third party.UI. This is interface d.NOTE for managed deployments Java.Script interfaces may be needed to.UI of the download manager.This is covered. by the download manager APIs in section 7.Interface e Unicast Streaming and playback of downloaded content using AV Control object.The AV Control object as defined in section 7.Source as specified in section 7.Interface e. 0 can be used to pass for a content access streaming.AV player to set up the stream.DRMControl. Information messages to the DRM agent for DRM.Interface e. 0 can also be used to get feedback from the AV player such as DRM related playback errors as defined in section 7.Source. Interface f Request license.The AV Player will render the content.When the content is.AV embedded object will have to get the necessary keys.DRM agent using interface f in order to decrypt the content.If the content is played inside the browser, interface e.DRMRights. Error to allow the page to handle DRM related errors in addition to c.Interface g Local metadata based applications.These interfaces are for use with local OITF embedded and DAE.CG client for browsing and.
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