Load image from ARGB bytearray

[feliwir]

Hello,

i'm trying to load an Image<Bgra32> from a given byte array with a given width & height. However the Image.Load<Bgra32> function only takes a byte array, so i'm not sure how to my width & height in there. So what i'm trying to do is this:

var image = new Image<Argb32>(width, height,pixelData);

Probably this is really easy, but i can't find a method on how to do this.
Help is appreciated, thanks!

[tocsoft]

You are looking for the Image.LoadPixelData<Bgra32>(data, width, hieght) static method.

[JimBobSquarePants]

https://docs.sixlabors.com/api/ImageSharp/SixLabors.ImageSharp.Image.html#SixLabors_ImageSharp_Image_LoadPixelData__1___0___System_Int32_System_Int32_

[feliwir]

Thanks!

[feliwir]

Sorry to write here again, but i just realized my pixeldata is in ABGR32 format, which doesn't seem to exist natively in ImageSharp. Do i need to manually convert the data?

[JimBobSquarePants]

Or create your own pixel format. It won't have the various optimizations in place for RGBA compatible types but would still work.

What's the source of this data? It's not a format I've come across in the wild, if it's common enough we could simply add it to the library.

[feliwir]

@JimBobSquarePants we're loading .ani files (animated windows cursors), but it turned out the pixelformat was BGRA in the end, so it was my bad. I was just confused because SDL2 stored this format as SDL_PIXELFORMAT_ABGR8888.

If you're interested in that format you can take a look at our code from here:
https://github.com/OpenSAGE/OpenSAGE/tree/master/src/OpenSage.Game/Data/Ani

[antonfirsov]

@feliwir sounds reasonable, opened #1345

[antonfirsov]

@feliwir off question:
what is the difference between SDL_PIXELFORMAT_BGR888 and SDL_PIXELFORMAT_BGR24?

[feliwir]

To clarify this a bit:
SDL_PIXELFORMAT_ABGR8888 is indentical to Bgra24 in ImageSharp. So i don't really need #1345 for myself anymore. Not sure why the SDL2 naming convention is different from ImageSharp in that regard

@feliwir off question:
what is the difference between SDL_PIXELFORMAT_BGR888 and SDL_PIXELFORMAT_BGR24?

According to the docs it's just an alias.