audiobookshelf/client/players/castUtils.js
2024-06-05 17:02:03 -05:00

92 lines
3.6 KiB
JavaScript

function getMediaInfoFromTrack(libraryItem, castImage, track) {
let metadata = null
if (libraryItem.mediaType === 'podcast') {
metadata = new chrome.cast.media.MusicTrackMediaMetadata()
metadata.albumArtist = libraryItem.media.metadata.author
metadata.artist = libraryItem.media.metadata.author
metadata.title = track.title
metadata.albumName = libraryItem.media.metadata.title
metadata.images = [castImage]
} else {
// https://developers.google.com/cast/docs/reference/web_sender/chrome.cast.media.AudiobookChapterMediaMetadata
metadata = new chrome.cast.media.AudiobookChapterMediaMetadata()
metadata.bookTitle = libraryItem.media.metadata.title
metadata.chapterNumber = track.index
metadata.chapterTitle = track.title
metadata.images = [castImage]
metadata.title = track.title
metadata.subtitle = libraryItem.media.metadata.title
}
var trackurl = track.fullContentUrl
var mimeType = track.mimeType
var mediainfo = new chrome.cast.media.MediaInfo(trackurl, mimeType)
mediainfo.metadata = metadata
mediainfo.itemId = track.index
mediainfo.duration = track.duration
return mediainfo
}
function buildCastMediaInfo(libraryItem, coverUrl, tracks) {
const castImage = new chrome.cast.Image(coverUrl)
return tracks.map((t) => getMediaInfoFromTrack(libraryItem, castImage, t))
}
function buildCastQueueRequest(libraryItem, coverUrl, tracks, startTime) {
var mediaInfoItems = buildCastMediaInfo(libraryItem, coverUrl, tracks)
let containerMetadata = null
let queueType = chrome.cast.media.QueueType.AUDIOBOOK
if (libraryItem.mediaType === 'podcast') {
queueType = chrome.cast.media.QueueType.PODCAST_SERIES
containerMetadata = new chrome.cast.media.ContainerMetadata(chrome.cast.media.ContainerType.GENERIC_CONTAINER)
containerMetadata.title = libraryItem.media.metadata.title
} else {
containerMetadata = new chrome.cast.media.AudiobookContainerMetadata()
containerMetadata.authors = libraryItem.media.metadata.authors?.map((a) => a.name)
containerMetadata.narrators = libraryItem.media.metadata.narrators || []
containerMetadata.publisher = libraryItem.media.metadata.publisher || undefined
containerMetadata.title = libraryItem.media.metadata.title
}
var mediaQueueItems = mediaInfoItems.map((mi) => {
var queueItem = new chrome.cast.media.QueueItem(mi)
return queueItem
})
// Find track to start playback and calculate track start offset
var track = tracks.find((at) => at.startOffset <= startTime && at.startOffset + at.duration > startTime)
var trackStartIndex = track ? track.index - 1 : 0
var trackStartTime = Math.floor(track ? startTime - track.startOffset : 0)
var queueData = new chrome.cast.media.QueueData(libraryItem.id, libraryItem.media.metadata.title, '', false, mediaQueueItems, trackStartIndex, trackStartTime)
queueData.containerMetadata = containerMetadata
queueData.queueType = queueType
return queueData
}
function castLoadMedia(castSession, request) {
return new Promise((resolve) => {
castSession.loadMedia(request).then(
() => resolve(true),
(reason) => {
console.error('Load media failed', reason)
resolve(false)
}
)
})
}
function buildCastLoadRequest(libraryItem, coverUrl, tracks, startTime, autoplay, playbackRate) {
var request = new chrome.cast.media.LoadRequest()
request.queueData = buildCastQueueRequest(libraryItem, coverUrl, tracks, startTime)
request.currentTime = request.queueData.startTime
request.autoplay = autoplay
request.playbackRate = playbackRate
return request
}
export { buildCastLoadRequest, castLoadMedia }