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< h1 class = "page-title" > Source: components/captionTask.brs< / h1 >
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class="sunlight-highlight-javascript linenums">import "pkg:/source/utils/config.brs"
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import "pkg:/source/api/baserequest.brs"
sub init()
m.top.observeField("url", "fetchCaption")
m.top.currentCaption = []
m.top.currentPos = 0
m.captionTimer = m.top.findNode("captionTimer")
m.captionTimer.ObserveField("fire", "updateCaption")
m.captionList = []
m.reader = createObject("roUrlTransfer")
m.font = CreateObject("roSGNode", "Font")
m.tags = CreateObject("roRegex", "{\\an\d*}|& lt;.*?& gt;|< .*?>", "s")
' Caption Style
m.fontSizeDict = { "Default": 60, "Large": 60, "Extra Large": 70, "Medium": 50, "Small": 40 }
m.percentageDict = { "Default": 1.0, "100%": 1.0, "75%": 0.75, "50%": 0.5, "25%": 0.25, "Off": 0 }
m.textColorDict = { "Default": & HFFFFFFFF, "White": & HFFFFFFFF, "Black": & H000000FF, "Red": & HFF0000FF, "Green": & H008000FF, "Blue": & H0000FFFF, "Yellow": & HFFFF00FF, "Magenta": & HFF00FFFF, "Cyan": & H00FFFFFF }
m.bgColorDict = { "Default": & H000000FF, "White": & HFFFFFFFF, "Black": & H000000FF, "Red": & HFF0000FF, "Green": & H008000FF, "Blue": & H0000FFFF, "Yellow": & HFFFF00FF, "Magenta": & HFF00FFFF, "Cyan": & H00FFFFFF }
deviceInfo = CreateObject("roDeviceInfo")
m.fontSize = m.fontSizeDict[deviceInfo.GetCaptionsOption("Text/Size")]
m.textColor = m.textColorDict[deviceInfo.GetCaptionsOption("Text/Color")]
m.textOpac = m.percentageDict[deviceInfo.GetCaptionsOption("Text/Opacity")]
m.bgColor = m.bgColorDict[deviceInfo.GetCaptionsOption("Background/Color")]
m.bgOpac = m.percentageDict[deviceInfo.GetCaptionsOption("Background/Opacity")]
setFont()
end sub
sub setFont()
fs = CreateObject("roFileSystem")
if fs.Exists("tmp:/font")
m.font.uri = "tmp:/font"
m.font.size = m.fontSize
else
m.font = "font:LargeSystemFont"
end if
end sub
sub fetchCaption()
m.captionTimer.control = "stop"
re = CreateObject("roRegex", "(http.*?\.vtt)", "s")
url = re.match(m.top.url)[0]
if url < > invalid
m.reader.setUrl(url)
text = m.reader.GetToString()
m.captionList = parseVTT(text)
m.captionTimer.control = "start"
else
m.captionTimer.control = "stop"
end if
end sub
function newlabel(txt)
label = CreateObject("roSGNode", "Label")
label.text = txt
label.font = m.font
label.font.size = m.fontSize
label.color = m.textColor
label.opacity = m.textOpac
return label
end function
function newLayoutGroup(labels)
newlg = CreateObject("roSGNode", "LayoutGroup")
newlg.appendchildren(labels)
newlg.horizalignment = "center"
newlg.vertalignment = "bottom"
return newlg
end function
function newRect(lg)
rectLG = CreateObject("roSGNode", "LayoutGroup")
rectxy = lg.BoundingRect()
rect = CreateObject("roSGNode", "Rectangle")
rect.color = m.bgColor
rect.opacity = m.bgOpac
rect.width = rectxy.width + 50
rect.height = rectxy.height
if lg.getchildCount() = 0
rect.width = 0
rect.height = 0
end if
rectLG.translation = [0, -rect.height / 2]
rectLG.horizalignment = "center"
rectLG.vertalignment = "center"
rectLG.appendchild(rect)
return rectLG
end function
sub updateCaption()
m.top.currentCaption = []
if LCase(m.top.playerState) = "playingon"
m.top.currentPos = m.top.currentPos + 100
texts = []
for each entry in m.captionList
if entry["start"] < = m.top.currentPos and m.top.currentPos < entry["end"]
t = m.tags.replaceAll(entry["text"], "")
texts.push(t)
end if
end for
labels = []
for each text in texts
labels.push(newlabel (text))
end for
lines = newLayoutGroup(labels)
rect = newRect(lines)
m.top.currentCaption = [rect, lines]
else if LCase(m.top.playerState.right(1)) = "w"
m.top.playerState = m.top.playerState.left(len (m.top.playerState) - 1)
end if
end sub
function isTime(text)
return text.right(1) = chr(31)
end function
function toMs(t)
t = t.replace(".", ":")
t = t.left(12)
timestamp = t.tokenize(":")
return 3600000 * timestamp[0].toint() + 60000 * timestamp[1].toint() + 1000 * timestamp[2].toint() + timestamp[3].toint()
end function
function parseVTT(lines)
lines = lines.replace(" --> ", chr(31) + chr(10))
lines = lines.split(chr(10))
curStart = -1
curEnd = -1
entries = []
for i = 0 to lines.count() - 1
if isTime(lines[i])
curStart = toMs (lines[i])
curEnd = toMs (lines[i + 1])
i += 1
else if curStart < > -1
trimmed = lines[i].trim()
if trimmed < > chr(0)
entry = { "start": curStart, "end": curEnd, "text": trimmed }
entries.push(entry)
end if
end if
end for
return entries
end function
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