jf-roku/source/VideoPlayer.brs

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function VideoPlayer(id)
' Get video controls and UI
video = CreateObject("roSGNode", "JFVideo")
video.id = id
video = VideoContent(video)
if video = invalid
return invalid
end if
jellyfin_blue = "#00a4dcFF"
video.retrievingBar.filledBarBlendColor = jellyfin_blue
video.bufferingBar.filledBarBlendColor = jellyfin_blue
video.trickPlayBar.filledBarBlendColor = jellyfin_blue
return video
end function
function VideoContent(video) as object
' Get video stream
video.content = createObject("RoSGNode", "ContentNode")
params = {}
meta = ItemMetaData(video.id)
video.content.title = meta.Name
container = getContainerType(meta)
video.container = container
' If there is a last playback positon, ask user if they want to resume
position = meta.json.UserData.PlaybackPositionTicks
if position > 0 then
dialogResult = startPlaybackOver(position)
'Dialog returns -1 when back pressed, 0 for resume, and 1 for start over
if dialogResult = -1 then
'User pressed back, return invalid and don't load video
return invalid
else if dialogResult = 1 then
'Start Over selected, change position to 0
position = 0
end if
end if
video.content.BookmarkPosition = int(position/10000000)
video.PlaySessionId = ItemGetSession(video.id, position)
transcodeParams = getTranscodeParameters(meta)
transcodeParams.append({"PlaySessionId": video.PlaySessionId})
subtitles = getSubtitles(meta.id,meta.json.MediaStreams)
video.Subtitles = subtitles["all"]
video.content.SubtitleTracks = subtitles["text"]
if video.Subtitles.count() > 0 then
if video.Subtitles[0].IsTextSubtitleStream then
video.subtitleTrack = video.availableSubtitleTracks[video.Subtitles[0].TextIndex].TrackName
video.suppressCaptions = false
else
video.suppressCaptions = true
'Watch to see if system overlay opened/closed to change transcoding if caption mode changed
m.device.EnableAppFocusEvent(True)
video.captionMode = video.globalCaptionMode
if video.globalCaptionMode = "On" or (video.globalCaptionMode = "When mute" and m.mute = true) then
'Only transcode if subtitles are turned on
transcodeParams.append({"SubtitleStreamIndex" : video.Subtitles[0].index })
end if
end if
end if
video.directPlaySupported = directPlaySupported(meta)
video.decodeAudioSupported = decodeAudioSupported(meta)
video.transcodeParams = transcodeParams
if video.directPlaySupported and video.decodeAudioSupported and transcodeParams.SubtitleStreamIndex = invalid then
params.append({
"Static": "true",
"Container": container
"PlaySessionId": video.PlaySessionId
})
video.content.url = buildURL(Substitute("Videos/{0}/stream", video.id), params)
video.content.streamformat = container
video.content.switchingStrategy = ""
video.isTranscode = False
else
video.content.url = buildURL(Substitute("Videos/{0}/master.m3u8", video.id), transcodeParams)
video.isTranscoded = true
end if
video.content = authorize_request(video.content)
' todo - audioFormat is read only
video.content.audioFormat = getAudioFormat(meta)
video.content.setCertificatesFile("common:/certs/ca-bundle.crt")
return video
end function
function getTranscodeParameters(meta as object)
if decodeAudioSupported(meta) then
audioCodec = meta.json.MediaStreams[1].codec
audioChannels = meta.json.MediaStreams[1].channels
else
audioCodec = "aac"
audioChannels = 2
end if
return {
"VideoCodec": "h264",
"AudioCodec": audioCodec,
"MaxAudioChannels": audioChannels,
"MediaSourceId": meta.id,
"SegmentContainer": "ts",
"MinSegments": 1,
"BreakOnNonKeyFrames": "True",
"h264-profile": "high,main,baseline,constrainedbaseline",
"RequireAvc": "false",
}
end function
'Checks available subtitle tracks and puts subtitles in preferred language at the top
function getSubtitles(id as string, MediaStreams)
allTracks = []
textTracks = []
devinfo = CreateObject("roDeviceInfo")
'Too many args for using substitute
dashedid = id.left(8) + "-" + id.mid(8,4) + "-" + id.mid(12,4) + "-" + id.mid(16,4) + "-" + id.right(12)
prefered_lang = devinfo.GetPreferredCaptionLanguage()
for each stream in MediaStreams
if stream.type = "Subtitle" then
'Documentation lists that srt, ttml, and dfxp can be sideloaded but only srt was working in my testing,
'forcing srt for all text subtitles
url = Substitute("{0}/Videos/{1}/{2}/Subtitles/{3}/0/", get_url(), dashedid, id, stream.index.tostr())
url = url + Substitute("Stream.js?api_key={0}&format=srt", get_setting("active_user"))
stream = {
"Track": { "Language" : stream.language, "Description": stream.displaytitle , "TrackName": url },
"IsTextSubtitleStream": stream.IsTextSubtitleStream,
"Index": stream.index,
"TextIndex": -1
}
if stream.IsTextSubtitleStream then
stream.TextIndex = textTracks.count()
end if
if prefered_lang = stream.language then
allTracks.unshift( stream )
if stream.IsTextSubtitleStream then textTracks.unshift(stream.Track)
else
allTracks.push( stream )
if stream.IsTextSubtitleStream then textTracks.push(stream.Track)
end if
end if
end for
return { "all" : allTracks, "text": textTracks }
end function
'Opens dialog asking user if they want to resume video or start playback over
function startPlayBackOver(time as LongInteger) as integer
return option_dialog([ "Resume playing at " + ticksToHuman(time) + ".", "Start over from the beginning." ])
end function
function directPlaySupported(meta as object) as boolean
devinfo = CreateObject("roDeviceInfo")
return devinfo.CanDecodeVideo({ Codec: meta.json.MediaStreams[0].codec }).result
end function
function decodeAudioSupported(meta as object) as boolean
devinfo = CreateObject("roDeviceInfo")
return devinfo.CanDecodeAudio({ Codec: meta.json.MediaStreams[1].codec, ChCnt: meta.json.MediaStreams[1].channels }).result
end function
function getContainerType(meta as object) as string
' Determine the file type of the video file source
print type(meta)
if meta.json.mediaSources = invalid then return ""
container = meta.json.mediaSources[0].container
if container = invalid
container = ""
else if container = "m4v" or container = "mov"
container = "mp4"
end if
return container
end function
function getAudioFormat(meta as object) as string
' Determine the codec of the audio file source
if meta.json.mediaSources = invalid then return ""
audioInfo = getAudioInfo(meta)
if audioInfo.count() = 0 then return ""
return audioInfo[0].codec
end function
function getAudioInfo(meta as object) as object
' Return audio metadata for a given stream
results = []
for each source in meta.json.mediaSources[0].mediaStreams
if source["type"] = "Audio"
results.push(source)
end if
end for
return results
end function
function ReportPlayback(video, state = "update" as string)
params = {
"PlaySessionId": video.PlaySessionId,
"PositionTicks": str(int(video.position)) + "0000000",
"IsPaused": (video.state = "paused"),
}
PlaystateUpdate(video.id, state, params)
end function
function StopPlayback()
video = m.scene.focusedchild
video.control = "stop"
m.device.EnableAppFocusEvent(False)
video.findNode("playbackTimer").control = "stop"
video.visible = "false"
if video.status = "finished" then MarkItemWatched(video.id)
ReportPlayback(video, "stop")
RemoveCurrentGroup()
end function