Hi,
I am trying to overlay text on videos streamed through rovideoscreen.
This is the code:
Function displayVideo(args As Dynamic)
print "Displaying video: "
p = CreateObject("roMessagePort")
video = CreateObject("roVideoScreen")
video.setMessagePort(p)
'bitrates = [0] ' 0 = no dots, adaptive bitrate
'bitrates = [348] ' <500 Kbps = 1 dot
'bitrates = [664] ' <800 Kbps = 2 dots
'bitrates = [996] ' <1.1Mbps = 3 dots
'bitrates = [2048] ' >=1.1Mbps = 4 dots
bitrates = [0]
'Swap the commented values below to play different video clips...
' urls = ["http://video.ted.com/talks/podcast/CraigVenter_2008_480.mp4"]
' qualities = ["HD"]
' StreamFormat = "mp4"
' title = "Craig Venter Synthetic Life"
srt = "" '"file://pkg:/source/craigventer.srt"
'urls = ["http://video.ted.com/talks/podcast/DanGilbert_2004_480.mp4"]
'qualities = ["HD"]
'StreamFormat = "mp4"
'title = "Dan Gilbert asks, Why are we happy?"
'Apple's HLS test stream
' urls = ["http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]
'qualities = ["SD"]
'streamformat = "hls"
'title = "Apple BipBop Test Stream"
' Big Buck Bunny test stream from Wowza
urls = ["http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8"]
qualities = ["SD"]
streamformat = "hls"
title = "Big Buck Bunny"
if type(args) = "roAssociativeArray"
if type(args.url) = "roString" and args.url <> "" then
urls[0] = args.url
end if
if type(args.StreamFormat) = "roString" and args.StreamFormat <> "" then
StreamFormat = args.StreamFormat
end if
if type(args.title) = "roString" and args.title <> "" then
title = args.title
else
title = ""
end if
if type(args.srt) = "roString" and args.srt <> "" then
srt = args.StreamFormat
else
srt = ""
end if
end if
m.canvas = CreateObject("roImageCanvas")
m.canvas.SetMessagePort(p)
'm.canvas.SetLayer(0, { Color: "#000000" })
m.paused = false
'Resolution-specific settings:
mode = CreateObject("roDeviceInfo").GetDisplayMode()
if mode = "720p"
m.layout = {
full: m.canvas.GetCanvasRect()
top: { x: 0, y: 0, w:1280, h: 130 }
left: { x: 249, y: 177, w: 391, h: 291 }
right: { x: 700, y: 177, w: 350, h: 291 }
bottom: { x: 249, y: 500, w: 780, h: 300 }
}
else
m.layout = {
full: m.canvas.GetCanvasRect()
top: { x: 0, y: 0, w: 720, h: 80 }
left: { x: 100, y: 100, w: 280, h: 210 }
right: { x: 400, y: 100, w: 220, h: 210 }
bottom: { x: 100, y: 340, w: 520, h: 140 }
}
end if
videoclip = CreateObject("roAssociativeArray")
videoclip.StreamBitrates = bitrates
videoclip.StreamUrls = urls
videoclip.StreamQualities = qualities
videoclip.StreamFormat = StreamFormat
videoclip.Title = title
print "srt = ";srt
if srt <> invalid and srt <> "" then
videoclip.SubtitleUrl = srt
end if
video.SetContent(videoclip)
video.show()
lastSavedPos = 0
statusInterval = 10 'position must change by more than this number of seconds before saving
while true
msg = wait(0, video.GetMessagePort())
if msg.isRemoteKeyPressed()
index = msg.GetIndex()
print "Remote button pressed: " + index.tostr()
if index = 13 or index = 6'<PAUSE/PLAY>
if m.paused
m.canvas.close()
video.Resume()
m.paused = false
else video.Pause()
end if
end if
end if
if type(msg) = "roVideoScreenEvent"
if msg.isScreenClosed() then 'ScreenClosed event
print "Closing video screen"
exit while
else if msg.isPlaybackPosition() then
nowpos = msg.GetIndex()
if nowpos > 10000
end if
if nowpos > 0
if abs(nowpos - lastSavedPos) > statusInterval
lastSavedPos = nowpos
end if
end if
else if msg.isRequestFailed()
print "play failed: "; msg.GetMessage()
else if msg.isPaused()
m.paused = true
list = []
color = "#80000000" 'semi-transparent black
list.Push({
Text: "Paused"
TextAttrs: { font: "huge" }
TargetRect: m.layout.full
})
' m.canvas.SetLayer(0, { Color: color, CompositionMode: "Source" })
m.canvas.SetLayer(1, list)
m.canvas.show()
else
print "Unknown event: "; msg.GetType(); " msg: "; msg.GetMessage()
endif
end if
end while
print "Not working - Sara";
End Function
When I try to close the canvas and use normally the inbuilt controls of rovideoscreen.It shows “Paused” on paused and then when we Resume, it shows the progress bar of rovideoscreen and then restarts the roku box.
Basically I want to create a roimagecanvas to overlay text but not programmatically code the remote key events after that. So i want to destroy it, and then continue with the inbuilt controls, and then again create a roimagecanvas to overlay again some text at some later point of time. I am just trying out this for the first time, so your pointers would be well appreciated. How else do I change this code to do what I want?
