func (pr *BimgProcessor) Process(buffer []byte, geo btcdn.GeoBox) (img btcdn.Image, err error) {
bimgImg := bimg.NewImage(buffer)
var newImage []byte
gravity := resolveGravity(geo.Gravity())
if geo.Cropped() && geo.Resized() {
newImage, err = resizeAndCrop(bimgImg, geo.Width(), geo.Height(), gravity)
} else if geo.Resized() {
if geo.Mode() == "!" {
newImage, err = forceResize(bimgImg, geo.Width(), geo.Height())
} else {
newImage, err = resize(bimgImg, geo.Width())
}
} else if geo.Cropped() {
newImage, err = crop(bimgImg, int(float64(geo.Offset()[1])), int(float64(geo.Offset()[0])), geo.Width(), geo.Height())
}
if geo.Greyscale() {
newImage, err = bimgImg.Colourspace(bimg.INTERPRETATION_B_W)
}
img = &Image{
body: newImage,
mime: Mimes[bimgImg.Type()],
}
return
}
func resize(mw *imagick.MagickWand, geo btcdn.GeoBox) (err error) {
var height uint
width := geo.Width()
baseWidth := int(mw.GetImageWidth())
if width > baseWidth {
width = baseWidth
}
if geo.Mode() == "!" {
height = uint(geo.Height())
} else {
ratio := heightToWidthRatio(mw)
height = uint((float64)(width) * ratio)
}
err = mw.ResizeImage(uint(width), height, imagick.FILTER_LANCZOS, 1)
if err != nil {
return
}
return
}