Using XVideo extension?

[Peter Harris]

Florian Harmuth wrote:
> Sorry that i have to reask again -> actually i get my image informations
> as XImage struct. Is it possible to convert/cast this information to the
> XRenders Picture format?

In order to implement your StretchImage(), the process would look
something like:

 XRenderCreatePicture(window)

 XCreatePixmap()
 XRenderCreatePicture(pixmap)
# If the input size is constant, the above only need to be done once

 XRenderSetPictureTransform(pixmap_picture)
# The above line is only needed when the amount of stretch changes

 XPutImage(pixmap) # XImage struct used here
 XRenderCompositeImage(pixmap_picture, null_mask, window_picture)

# Free pictures and pixmap here, unless cached

Setting a non-default filter to smooth out the scaling is left as an
exercise for the reader.

Peter Harris

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