castDeck

Generic iframe based slide show chromecast application. Features:

• Scale factor adjustment
• Aspect ratio adjustment
• Overscan adjustment
• Rotation adjustment
• Transitions between multiple urls

Usage

• Go to the control url
• Adjust settings
• Press cast

Using the receiver alone

The management application is just one example. You could use the receiver application in your own product as well. In general, the way it works is as follows:

• create a web page, anywhere. This contains the content you want to display.
• create a sender application, that loads up castDeck on your chromecast, which the content web page.
• control castDeck from your own application. The api is discussed below.

Api

To create your own application around castDeck:

• include the google cast api: www.gstatic.com/cv/js/sender/v1/cast_sender.js
• include the senderApplication.js

CastDeck is available as a global castDeck singleton

options

set castDeck.options.log = true; after including senderApplication.js to enable logging for debugging

methods

castDeck.cast(url? || url[]?)

start casting with the given url. Url can be a single string or an array

castDeck.stop()

stop casting

castDeck.setZoom(value), castDeck.zoomIn(), castDeck.zoomOut(), castDeck.zoomReset()

adjust zoom

castDeck.rotateCCW(), castDeck.rotateCW()

rotate counter clockwise (CCW) or clockwise (CW)

castDeck.adjustTop(px), castDeck.adjustRight(px), castDeck.adjustBottom(px), castDeck.adjustLeft(px)

adjust overscan parameters. Some monitors (tvs specifically) cut away some of the sides of the viewport. You can adjust the overscan parameters to mitigate that.

castDeck.updateAspect(value | 'native')

pass in the string native or a numeric value to adjust the aspect ratio. Some monitors distort the HD aspect ratio (which is 16:9) to fit the ratio of the device. Pass in the actual aspect ratio of the device to fix this distortion.

castDeck.updateTransition(value)

set the transition type, currently only 'fade' is supported

castDeck.updateDuration(value)

set the display duration between transition, defaults to 10 seconds.

Notes

• The castDeck api id is 4EC978AD

• When started, the following json message can be sent to the urn:x-cast:org.firstlegoleague.castDeck namespace

    {
        "url":"<url to load>",
        "rotation": <rotation in degrees>,
        "zoom": <zoom level>,
        "aspect": <"native"|ratio>,
        "overscan": [<top>,<right>,<bottom>,<left>],
        "transition": "fade",
        "duration": <seconds>
    }