Request: image.to_bytes() function

[IagoBeuller]

I need the bytes of the images, for example, use them in pillow or pygame. Also "imageFromBytes(data: string): Image".

I've made this little library for making this feature for me, it gets the image data bytes as well the png file bytes.

import
 nimpy,
 pixie

pyExportModule("pixie_utils")

proc getImageBytes*(image: Image, format: string = "png"): string {.raises: [PixieError].} =
 # Gets the bytes from image.
 let encodeFormat = case format:
 of "png": PngFormat
 of "bmp": BmpFormat
 of "jpg", "jpeg": JpegFormat
 of "qoi": QoiFormat
 of "ppm": PpmFormat
 else:
 raise newException(PixieError, "Unsupported image format")

 result = image.encodeImage(encodeFormat)

proc getImageData*(image: Image): string {.raises: [].} =
 # Gets the image data as bytes.
 result = newString(image.width * image.height * 4)
 var
 i = 0
 rgba: ColorRGBA
 
 for color in image.data:
 rgba = color.rgba()
 result[i] = rgba.r.char
 result[i+1] = rgba.g.char
 result[i+2] = rgba.b.char
 result[i+3] = rgba.a.char
 i += 4

proc getImageBytes(image_ref: int, format: string = "png"): string {.exportpy: "getImageBytes".} =
 result = getImageBytes(cast[Image](image_ref), format)

proc getImageData(image_ref: int): string {.exportpy: "getImageData".} =
 result = getImageData(cast[Image](image_ref))