Lista de elementos en fila.
El campo itemId de los elementos debe estar vacío. De lo contrario, la solicitud fallará y mostrará el error INVALID_PARAMS. Está ordenada (el primer elemento se reproducirá primero).
Segundos (desde el comienzo del contenido) para iniciar la reproducción del primer elemento que se reproducirá.
Si se proporciona, este valor tendrá prioridad sobre el valor startTime proporcionado en el nivel de QueueItem, pero solo la primera vez que se reproduce el elemento. Esto es para cubrir el caso común en el que el usuario transmite el elemento que se estaba reproduciendo localmente para que currentTime no se aplique al elemento de forma permanente, como lo hace QueueItem startTime. De esta manera, se evita tener que restablecer el startTime de forma dinámica (es posible que esto no sea posible si el teléfono se suspendió).
customData
(objeto no nulo o indefinido)
Datos específicos de la aplicación para esta solicitud. Permite que el remitente y el receptor extiendan con facilidad el protocolo multimedia sin tener que usar un espacio de nombres nuevo con mensajes personalizados.
Un número para sincronizar todos los comandos de la cola.
Si se proporciona para un comando de cola, el SDK verificará que el número de secuencia
más reciente de la cola coincida con la solicitud.
secuenciaNumber actual se proporciona como parte de los mensajes salientes de cambios
en la cola.
Es el índice del elemento del array de elementos que debe ser el primer elemento currentItem (el elemento que se reproducirá primero). Ten en cuenta que este es el índice del array (comienza en 0) y no del itemId (ya que no se conoce hasta que se crea la cola). Si repeatMode tiene REPEAT_OFF, la reproducción finalizará cuando se reproduzca el último elemento del array (no se reproducirán los elementos anteriores a startIndex).
Esto puede ser útil para situaciones de continuación en las que el usuario ya estaba usando la app emisora y, en el medio, decide transmitir. De esta manera, la app emisora no necesita asignar entre las posiciones de cola local y remota ni guardar una solicitud QUEUE_UPDATE adicional.
[null,null,["Última actualización: 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."]]
