Method Save

vips/vips.go:336–392

(
	imgtype imagetype.Type,
	quality int,
	o *options.Options,
)

}

func (img *Image) Save(
	imgtype imagetype.Type,
	quality int,
	o *options.Options,
) (imagedata.ImageData, error) {
	target := C.vips_target_new_to_memory()

	cancel := func() {
		C.vips_unref_target(target)
	}

	so := newSaveOptions(o)

	err := C.int(0) //nolint:wastedassign
	imgsize := C.size_t(0)

	switch imgtype {
	case imagetype.JPEG:
		err = C.vips_jpegsave_go(img.VipsImage, target, C.int(quality), so)
	case imagetype.JXL:
		err = C.vips_jxlsave_go(img.VipsImage, target, C.int(quality), so)
	case imagetype.PNG:
		err = C.vips_pngsave_go(img.VipsImage, target, so)
	case imagetype.WEBP:
		err = C.vips_webpsave_go(img.VipsImage, target, C.int(quality), so)
	case imagetype.GIF:
		err = C.vips_gifsave_go(img.VipsImage, target, so)
	case imagetype.HEIC:
		err = C.vips_heifsave_go(img.VipsImage, target, C.int(quality), so)
	case imagetype.AVIF:
		err = C.vips_avifsave_go(img.VipsImage, target, C.int(quality), so)
	case imagetype.TIFF:
		err = C.vips_tiffsave_go(img.VipsImage, target, C.int(quality), so)
	case imagetype.BMP:
		err = C.vips_bmpsave_target_go(img.VipsImage, target, so)
	case imagetype.ICO:
		err = C.vips_icosave_target_go(img.VipsImage, target, so)
	default:
		// NOTE: probably, it would be better to use defer unref + additionally ref the target
		// before passing it to the imagedata.ImageData
		cancel()
		return nil, newVipsError("Usupported image type to save")
	}
	if err != 0 {
		cancel()
		return nil, Error()
	}

	var ptr = C.vips_blob_get(target.blob, &imgsize)

	b := unsafe.Slice((*byte)(ptr), int(imgsize))

	i := imagedata.NewFromBytesWithFormat(imgtype, b)
	i.AddCancel(cancel)

	return i, nil
}