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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
use stb_image = stb_image::image;
// FIXME: Images must not be copied every frame. Instead we should atomically
// reference count them.
pub type Image = stb_image::Image<u8>;
pub fn Image(width: uint, height: uint, depth: uint, data: ~[u8]) -> Image {
stb_image::new_image(width, height, depth, data)
}
static TEST_IMAGE: [u8, ..4962] = include_bin!("test.jpeg");
pub fn test_image_bin() -> ~[u8] {
return vec::from_fn(4962, |i| TEST_IMAGE[i]);
}
pub fn load_from_memory(buffer: &[u8]) -> Option<Image> {
// Can't remember why we do this. Maybe it's what cairo wants
static FORCE_DEPTH: uint = 4;
match stb_image::load_from_memory_with_depth(buffer, FORCE_DEPTH, true) {
stb_image::ImageU8(image) => {
assert!(image.depth == 4);
// Do color space conversion :(
let data = do vec::from_fn(image.width * image.height * 4) |i| {
let color = i % 4;
let pixel = i / 4;
match color {
0 => image.data[pixel * 4 + 2],
1 => image.data[pixel * 4 + 1],
2 => image.data[pixel * 4 + 0],
3 => 0xffu8,
_ => fail!()
}
};
assert!(image.data.len() == data.len());
Some(Image(image.width, image.height, image.depth, data))
}
stb_image::ImageF32(_image) => fail!(~"HDR images not implemented"),
stb_image::Error => None
}
}
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