在 Roku 上使用 IMA DAI SDK

<?xml version="1.0" encoding="utf-8" ?>
<component name="MainScene" extends="Scene" initialFocus = "myVideo">
<script type="text/brightscript">
<![CDATA[
  function init()
    m.video = m.top.findNode("myVideo")
    m.video.notificationinterval = 1
    m.testLiveStream = {
      title: "Livestream",
      assetKey: "c-rArva4ShKVIAkNfy6HUQ",
      apiKey: "",
      type: "live"
    }
    m.testVodStream = {
      title: "VOD stream"
      contentSourceId: "2548831",
      videoId: "tears-of-steel",
      apiKey: "",
      type: "vod"
    }
    m.testVideoStitcherLiveStream = {
      title: "Video Stitcher Livestream",
      customAssetKey: "CUSTOM_ASSET_KEY",
      networkCode: "NETWORK_CODE",
      liveConfigId: "LIVE_CONFIG_ID",
      region: "LOCATION",
      projectNumber: "PROJECT_NUMBER",
      oAuthToken: "OAUTH_TOKEN",
      apiKey: "",
      type: "stitcherLive"
    }
    loadImaSdk()
  end function

  function loadImaSdk() as void
    m.sdkTask = createObject("roSGNode", "imasdk")
    m.sdkTask.observeField("sdkLoaded", "onSdkLoaded")
    m.sdkTask.observeField("errors", "onSdkLoadedError")

    ' Set this to the stream data you would like to play.
    selectedStream = m.testVideoStitcherLiveStream
    m.videoTitle = selectedStream.title
    m.sdkTask.streamData = selectedStream

    m.sdkTask.observeField("urlData", "urlLoadRequested")
    m.sdkTask.video = m.video
    ' Setting control to run starts the task thread.
    m.sdkTask.control = "RUN"
  end function

  Sub loadStream()
    sdk = m.sdk
    sdk.initSdk()
    setupVideoPlayer()

    request = {}
    streamData = m.top.streamData
    if streamData.type = "live"
      request = sdk.CreateLiveStreamRequest(streamData.assetKey, streamData.apiKey)
    else if streamData.type = "vod"
      request = sdk.CreateVodStreamRequest(streamData.contentSourceId, streamData.videoId, streamData.apiKey)
    else if streamData.type = "stitcherLive"
      request = sdk.CreateVideoStitcherLiveStreamRequest(
        streamData.customAssetKey,
        streamData.networkCode,
        streamData.liveConfigId,
        streamData.region,
        streamData.projectNumber,
        streamData.oAuthToken
      )
    else
      request = sdk.CreateStreamRequest()
    end if

    request.player = m.player
    request.adUiNode = m.top.video

    requestResult = sdk.requestStream(request)
    If requestResult <> Invalid
      print "Error requesting stream ";requestResult
    Else
      m.streamManager = Invalid
      While m.streamManager = Invalid
        sleep(50)
        m.streamManager = sdk.getStreamManager()
      End While
      If m.streamManager = Invalid or m.streamManager["type"] <> Invalid or m.streamManager["type"] = "error"
        errors = CreateObject("roArray", 1, True)
        print "error ";m.streamManager["info"]
        errors.push(m.streamManager["info"])
        m.top.errors = errors
      Else
        m.top.streamManagerReady = True
        addCallbacks()
        m.streamManager.start()
      End If
    End If
  End Sub

request = sdk.createVideoStitcherLiveStreamRequest(customAssetKey, networkCode, liveConfigId, region, projectNumber, oAuthToken)

request.player = m.player
request.adUiNode = m.top.video

' The following session options are examples. Use session options
' that are compatible with your video stream.
sessionOptions = {
  "manifestOptions": {
    "bitrateOrder": "ascending"
  }
}
request.videoStitcherSessionOptions = sessionOptions

requestResult = sdk.requestStream(request)