콘텐츠 시작 이후 재생할 첫 번째 항목의 재생을 시작하는 데 걸린 초 (초)입니다.
제공된 경우 이 값은 QueueItem 수준에서 제공된 startTime 값보다 우선하지만 항목이 처음 재생될 때만 적용됩니다. 이는 QueueItem startTime처럼 currentTime이 항목에 영구적으로 적용되지 않도록 사용자가 로컬에서 재생 중인 항목을 전송하는 일반적인 사례를 다룹니다. startTime을 동적으로 재설정할 필요가 없습니다 (휴대전화가 절전 모드로 전환된 경우에는 불가능할 수 있음).
customData
(null이 아닌 객체 또는 정의되지 않음)
이 요청에 대한 애플리케이션별 데이터입니다. 이를 통해 발신자와 수신자는 맞춤 메시지에 새 네임스페이스를 사용하지 않고도 미디어 프로토콜을 쉽게 확장할 수 있습니다.
항목 배열에서 첫 번째 currentItem (가장 먼저 재생될 항목)이어야 하는 항목의 색인입니다. 이는 배열의 색인 (0에서 시작)이며 itemId (큐를 만들 때까지 알려지지 않음)가 아닙니다. repeatMode가 REPEAT_OFF인 경우 배열의 마지막 항목이 재생될 때 재생이 종료됩니다 (startIndex 이전의 요소는 재생되지 않음).
이는 사용자가 이미 발신기 앱을 사용하고 있고 중간에 전송을 결정한 연속 시나리오에 유용할 수 있습니다. 이렇게 하면 발신자 앱이 로컬 및 원격 대기열 위치 간에 매핑할 필요가 없거나 QUEUE_UPDATE 요청을 하나 더 저장합니다.
[null,null,["최종 업데이트: 2025-07-25(UTC)"],[[["\u003cp\u003e\u003ccode\u003eQueueLoadRequestData\u003c/code\u003e is used to load a queue of media items for playback within the Cast framework.\u003c/p\u003e\n"],["\u003cp\u003eIt includes properties like \u003ccode\u003eitems\u003c/code\u003e (array of queue items), \u003ccode\u003ecurrentTime\u003c/code\u003e (playback start time), and \u003ccode\u003erepeatMode\u003c/code\u003e (queue behavior).\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003estartIndex\u003c/code\u003e property allows specifying the initial playback position within the queue.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003ecustomData\u003c/code\u003e can be used to send application-specific information along with the request.\u003c/p\u003e\n"],["\u003cp\u003eRequest parameters like \u003ccode\u003emediaSessionId\u003c/code\u003e, \u003ccode\u003erequestId\u003c/code\u003e, and \u003ccode\u003esequenceNumber\u003c/code\u003e help manage and synchronize queue operations.\u003c/p\u003e\n"]]],["`QueueLoadRequestData` defines the data for a media event queue load request. Key actions include constructing it with a non-null array of `QueueItem` objects, where each item's `itemId` should be empty. It allows setting a `currentTime` for the first item's playback start, overriding the `QueueItem`'s `startTime`. `customData` facilitates application-specific extensions. Properties include `repeatMode` for queue behavior, `startIndex` for initial playback position, and `sequenceNumber` for command synchronization.\n"],null,["# Class: QueueLoadRequestData\n\ncast.[framework](/cast/docs/reference/web_receiver/cast.framework).[messages](/cast/docs/reference/web_receiver/cast.framework.messages).QueueLoadRequestData\n=============================================================================================================================================================\n\nclass static\n\nMedia event queue LOAD request data.\n\nConstructor\n-----------\n\n### QueueLoadRequestData\n\nnew\nQueueLoadRequestData(items)\n\n| #### Parameter ||\n|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| items | Array of non-null [cast.framework.messages.QueueItem](/cast/docs/reference/web_receiver/cast.framework.messages.QueueItem) List of queue items. The itemId field of the items should be empty or the request will fail with an INVALID_PARAMS error. It is sorted (first element will be played first). Value must not be null. |\n\nExtends\n: [cast.framework.messages.RequestData](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData)\n\nProperties\n----------\n\n### currentTime\n\n(number or undefined)\n\nSeconds (since the beginning of content) to start playback of the first\nitem to be played.\nIf provided, this value will take precedence over the startTime value\nprovided at the QueueItem level but only the first time the item is\nplayed. This is to cover the common case where the user casts the item\nthat was playing locally so the currentTime does not apply to the item\npermanently like the QueueItem startTime does. It avoids having to reset\nthe startTime dynamically (that may not be possible if the phone has gone\nto sleep).\n\n### customData\n\n(non-null Object or undefined)\n\nApplication-specific data for this request. It enables the sender and\nreceiver to easily extend the media protocol without having to use a new\nnamespace with custom messages.\n\nInherited from\n: [cast.framework.messages.RequestData#customData](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#customData)\n\n### items\n\nnon-null Array of non-null [cast.framework.messages.QueueItem](/cast/docs/reference/web_receiver/cast.framework.messages.QueueItem)\n\nArray of queue items. It is sorted (first element will be played first).\n\n### mediaSessionId\n\n(number or undefined)\n\nId of the media session that the request applies to.\n\nInherited from\n: [cast.framework.messages.RequestData#mediaSessionId](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#mediaSessionId)\n\n### repeatMode\n\n([cast.framework.messages.RepeatMode](/cast/docs/reference/web_receiver/cast.framework.messages#.RepeatMode) or undefined)\n\nBehavior of the queue when all items have been played.\n\n### requestId\n\nnumber\n\nId of the request, used to correlate request/response.\n\nInherited from\n: [cast.framework.messages.RequestData#requestId](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#requestId)\n\n### sequenceNumber\n\n(number or undefined)\n\nA number to synchronize all queue commands.\nIf provided for a queue command, the SDK will verify the queue latest\nsequence number match the request.\nCurrent sequenceNumber is provided as part of outgoing queue changed\nmessages.\n\nInherited from\n: [cast.framework.messages.RequestData#sequenceNumber](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#sequenceNumber)\n\n### startIndex\n\n(number or undefined)\n\nThe index of the item in the items array that must be the first\ncurrentItem (the item that will be played first). Note this is the index\nof the array (starts at 0) and not the itemId (as it is not known until\nthe queue is created). If repeatMode is REPEAT_OFF playback will end when\nthe last item in the array is played (elements before the startIndex will\nnot be played).\nThis may be useful for continuation scenarios where the user was already\nusing the sender app and in the middle decides to cast. In this way the\nsender app does not need to map between the local and remote queue\npositions or saves one extra QUEUE_UPDATE request."]]
