296 lines
9.1 KiB
Plaintext
296 lines
9.1 KiB
Plaintext
sub init()
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m.top.optionsAvailable = false
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setupAudioNode()
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setupAnimationTasks()
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setupButtons()
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setupInfoNodes()
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setupDataTasks()
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m.currentSongIndex = 0
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m.buttonsNeedToBeLoaded = true
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end sub
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sub setupAnimationTasks()
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m.displayButtonsAnimation = m.top.FindNode("displayButtonsAnimation")
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m.playPositionAnimation = m.top.FindNode("playPositionAnimation")
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m.playPositionAnimationWidth = m.top.FindNode("playPositionAnimationWidth")
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m.bufferPositionAnimation = m.top.FindNode("bufferPositionAnimation")
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m.bufferPositionAnimationWidth = m.top.FindNode("bufferPositionAnimationWidth")
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end sub
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' Creates tasks to gather data needed to renger NowPlaying Scene and play song
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sub setupDataTasks()
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' Load meta data
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m.LoadMetaDataTask = CreateObject("roSGNode", "LoadItemsTask")
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m.LoadMetaDataTask.itemsToLoad = "metaData"
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' Load background image
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m.LoadBackdropImageTask = CreateObject("roSGNode", "LoadItemsTask")
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m.LoadBackdropImageTask.itemsToLoad = "backdropImage"
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' Load audio stream
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m.LoadAudioStreamTask = CreateObject("roSGNode", "LoadItemsTask")
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m.LoadAudioStreamTask.itemsToLoad = "audioStream"
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end sub
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' Creates audio node used to play song(s)
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sub setupAudioNode()
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m.top.audio = createObject("RoSGNode", "Audio")
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m.top.audio.observeField("state", "audioStateChanged")
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m.top.audio.observeField("position", "audioPositionChanged")
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m.top.audio.observeField("bufferingStatus", "bufferPositionChanged")
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end sub
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' Setup playback buttons, default to Play button selected
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sub setupButtons()
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m.buttons = m.top.findNode("buttons")
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m.top.observeField("selectedButtonIndex", "onButtonSelectedChange")
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m.previouslySelectedButtonIndex = 1
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m.top.selectedButtonIndex = 1
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end sub
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' Event handler when user selected a different playback button
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sub onButtonSelectedChange()
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' Change previously selected button back to default image
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selectedButton = m.buttons.getChild(m.previouslySelectedButtonIndex)
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selectedButton.uri = selectedButton.uri.Replace("-selected", "-default")
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' Change selected button image to selected image
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selectedButton = m.buttons.getChild(m.top.selectedButtonIndex)
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selectedButton.uri = selectedButton.uri.Replace("-default", "-selected")
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end sub
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sub setupInfoNodes()
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m.albumCover = m.top.findNode("albumCover")
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m.backDrop = m.top.findNode("backdrop")
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m.playPosition = m.top.findNode("playPosition")
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m.bufferPosition = m.top.findNode("bufferPosition")
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m.seekBar = m.top.findNode("seekBar")
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end sub
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sub bufferPositionChanged()
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if not isValid(m.top.audio.bufferingStatus)
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bufferPositionBarWidth = m.seekBar.width
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else
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bufferPositionBarWidth = m.seekBar.width * m.top.audio.bufferingStatus.percentage
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end if
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' Ensure position bar is never wider than the seek bar
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if bufferPositionBarWidth > m.seekBar.width
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bufferPositionBarWidth = m.seekBar.width
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end if
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' Use animation to make the display smooth
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m.bufferPositionAnimationWidth.keyValue = [m.bufferPosition.width, bufferPositionBarWidth]
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m.bufferPositionAnimation.control = "start"
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end sub
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sub audioPositionChanged()
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if not isValid(m.top.audio.position)
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playPositionBarWidth = 0
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else
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songPercentComplete = m.top.audio.position / m.top.audio.duration
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playPositionBarWidth = m.seekBar.width * songPercentComplete
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end if
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' Ensure position bar is never wider than the seek bar
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if playPositionBarWidth > m.seekBar.width
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playPositionBarWidth = m.seekBar.width
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end if
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' Use animation to make the display smooth
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m.playPositionAnimationWidth.keyValue = [m.playPosition.width, playPositionBarWidth]
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m.playPositionAnimation.control = "start"
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end sub
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sub audioStateChanged()
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' Song Finished, attempt to move to next song
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if m.top.audio.state = "finished"
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if m.currentSongIndex < m.top.pageContent.count() - 1
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LoadNextSong()
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else
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' Return to previous screen
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m.top.state = "finished"
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end if
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end if
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end sub
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function playAction() as boolean
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if m.top.audio.state = "playing"
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m.top.audio.control = "pause"
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else if m.top.audio.state = "paused"
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m.top.audio.control = "resume"
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end if
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return true
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end function
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function previousClicked() as boolean
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if m.currentSongIndex > 0
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m.currentSongIndex--
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pageContentChanged()
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end if
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return true
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end function
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function nextClicked() as boolean
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if m.currentSongIndex < m.top.pageContent.count() - 1
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LoadNextSong()
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end if
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return true
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end function
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sub LoadNextSong()
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m.currentSongIndex++
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pageContentChanged()
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end sub
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' Update values on screen when page content changes
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sub pageContentChanged()
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' Reset buffer bar
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m.bufferPosition.width = 0
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m.LoadMetaDataTask.itemId = m.top.pageContent[m.currentSongIndex]
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m.LoadMetaDataTask.observeField("content", "onMetaDataLoaded")
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m.LoadMetaDataTask.control = "RUN"
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m.LoadAudioStreamTask.itemId = m.top.pageContent[m.currentSongIndex]
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m.LoadAudioStreamTask.observeField("content", "onAudioStreamLoaded")
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m.LoadAudioStreamTask.control = "RUN"
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end sub
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sub onAudioStreamLoaded()
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data = m.LoadAudioStreamTask.content[0]
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m.LoadAudioStreamTask.unobserveField("content")
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if data <> invalid and data.count() > 0
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m.top.audio.content = data
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m.top.audio.control = "stop"
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m.top.audio.control = "none"
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m.top.audio.control = "play"
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end if
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end sub
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sub onBackdropImageLoaded()
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data = m.LoadBackdropImageTask.content[0]
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m.LoadBackdropImageTask.unobserveField("content")
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if isValid(data) and data <> ""
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setBackdropImage(data)
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end if
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end sub
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sub onMetaDataLoaded()
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data = m.LoadMetaDataTask.content[0]
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m.LoadMetaDataTask.unobserveField("content")
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if data <> invalid and data.count() > 0
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' Use metadata to load backdrop image
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m.LoadBackdropImageTask.itemId = data.json.ArtistItems[0].id
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m.LoadBackdropImageTask.observeField("content", "onBackdropImageLoaded")
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m.LoadBackdropImageTask.control = "RUN"
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setPosterImage(data.posterURL)
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setScreenTitle(data.json)
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setOnScreenTextValues(data.json)
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' If we have more and 1 song to play, fade in the next and previous controls
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if m.buttonsNeedToBeLoaded
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if m.top.pageContent.count() > 1
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m.displayButtonsAnimation.control = "start"
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end if
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m.buttonsNeedToBeLoaded = false
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end if
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end if
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end sub
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' Set poster image on screen
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sub setPosterImage(posterURL)
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if isValid(posterURL)
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if m.albumCover.uri <> posterURL
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m.albumCover.uri = posterURL
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end if
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end if
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end sub
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' Set screen's title text
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sub setScreenTitle(json)
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newTitle = ""
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if isValid(json)
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if isValid(json.AlbumArtist)
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newTitle = json.AlbumArtist
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end if
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if isValid(json.AlbumArtist) and isValid(json.name)
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newTitle = newTitle + " / "
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end if
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if isValid(json.name)
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newTitle = newTitle + json.name
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end if
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end if
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if m.top.overhangTitle <> newTitle
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m.top.overhangTitle = newTitle
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end if
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end sub
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' Populate on screen text variables
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sub setOnScreenTextValues(json)
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if isValid(json)
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setFieldTextValue("numberofsongs", "Track " + stri(m.currentSongIndex + 1) + "/" + stri(m.top.pageContent.count()))
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setFieldTextValue("artist", json.Artists[0])
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setFieldTextValue("song", json.name)
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end if
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end sub
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' Add backdrop image to screen
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sub setBackdropImage(data)
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if isValid(data)
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if m.backDrop.uri <> data
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m.backDrop.uri = data
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end if
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end if
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end sub
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' Process key press events
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function onKeyEvent(key as string, press as boolean) as boolean
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' Key bindings for remote control buttons
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if press
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if key = "play"
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return playAction()
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else if key = "back"
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m.top.audio.control = "stop"
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else if key = "rewind"
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return previousClicked()
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else if key = "fastforward"
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return nextClicked()
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else if key = "left"
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if m.top.pageContent.count() = 1 then return false
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if m.top.selectedButtonIndex > 0
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m.previouslySelectedButtonIndex = m.top.selectedButtonIndex
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m.top.selectedButtonIndex = m.top.selectedButtonIndex - 1
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end if
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return true
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else if key = "right"
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if m.top.pageContent.count() = 1 then return false
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m.previouslySelectedButtonIndex = m.top.selectedButtonIndex
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if m.top.selectedButtonIndex < 2 then m.top.selectedButtonIndex = m.top.selectedButtonIndex + 1
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return true
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else if key = "OK"
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if m.buttons.getChild(m.top.selectedButtonIndex).id = "play"
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return playAction()
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else if m.buttons.getChild(m.top.selectedButtonIndex).id = "previous"
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return previousClicked()
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else if m.buttons.getChild(m.top.selectedButtonIndex).id = "next"
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return nextClicked()
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end if
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end if
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end if
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return false
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end function
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