"Paint the region of the image" in what colorspace?

[svgeesus]

https://html.spec.whatwg.org/multipage/canvas.html#drawing-images

Paint the region of the image argument specified by the source rectangle on the region of the rendering context's output bitmap specified by the destination rectangle, after applying the current transformation matrix to the destination rectangle.

CanvasRenderingContext2D has a well-defined colorspace, defaulting to srgb, and I was pleased to see (although in a Note):

There do not exist any inputs to a 2D context for which the color space is undefined

But the description quoted above does not clearly state

1. How the colorspace of the source image is determined (maybe it is in a different part of the spec and I missed it)
2. How the Paint the region is affected by the context colorspace

Is the bitmap assumed to already be in whatever colorspace was used to establish the 2D context? If so, where is that defined?

[annevk]

This problem was also touched upon #6562 (comment) for a similar API and left for a future PR. @ccameron-chromium do you have a timeline for that?

cc @whatwg/canvas