Brightsign Object Reference Manual (FW 5.1) Manual de usuario descargar pdf (Pagina 210)

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roMimeStream

This object passes an MJPEG stream in MIME format to the roVideoPlayer.PlayFile() method. There are some limitations

to what MJPEG streams this object will play correctly. roMimeStream has been optimized to play streaming video from a

local source with the smallest possible delay. The result is a short buffering window that is not appropriate for playing

MJPEG streams from URLs outside of a local network. We are currently optimizing roMimeStream to work with different

IP camera brands: see the IP Camera FAQ for more details.

Object Creation: To play an RTSP stream, first instantiate an roUrlTransfer object. Then wrap it in an roMimeStream

object and pass the PictureStream to PlayFile, as shown in the following example.

u=createobject("roUrlTransfer")

u.seturl("http://mycamera/video.mjpg")

r=createobject("roMimeStream", u)

p=createobject("roVideoPlayer")

p.PlayFile({ PictureStream: r })

Interfaces: ifPictureStream, ifMessagePort

The ifPictureStream interface provides the following:

• GetUrl() As String

The ifMessagePort interface provides the following:

• SetPort(a As Object) Posts event messages to the attached message port. The event messages are of the

type roMimeStreamEvent and will implement the ifInt interface. There are currently two possible event messages:

o PICTURE_STREAM_FIRST_PICTURE_AVAILABLE = 0: The first picture is now available for decoding.

o PICTURE_STREAM_CONNECT_FAILED: The object is unable to connect to the specified URL.

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Brightsign Object Reference Manual (FW 5.1) Manual de usuario Pagina 210