Other

The <input> and <output> tags of every module on this page additionally accept the attributes common to all analysis modules.

imagedecodeadded in 1.20

This module takes the input data as a stream of bytes encoded by the values 0 to 255. The data is decoded using the operating system's image decoding class, which should support PNG, JPEG and BMP data as a minimum. As output, the decoded image data becomes available as red (r), green (g), blue (b), alpha (a), luma and luminance channels (Rec. 709) with each value encoded in the range 0 to 1. The outputs receive one value per pixel, line-wise starting from the top. Additionally, the outputs width and height receive width and height in pixels respectively.

This module can be used to transfer image files via Bluetooth or a network interface and then decode them for further processing or display in a color map graph.

<imagedecode>
    <input as="in">BUFFER</input>
    <output as="width">BUFFER</output>
    <output as="height">BUFFER</output>
    <output as="r">BUFFER</output>
    <output as="g">BUFFER</output>
    <output as="b">BUFFER</output>
    <output as="a">BUFFER</output>
    <output as="luma">BUFFER</output>
    <output as="luminance">BUFFER</output>
</imagedecode>

Inputs

as	Count	as required	Allowed types
in	exactly one	no	buffer

Outputs

as	Count	as required
width	optional	yes
height	optional	yes
r	optional	yes
g	optional	yes
b	optional	yes
a	optional	yes
luma	optional	yes
luminance	optional	yes