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Add colorspace support to qoi_encode_to_vec()

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This commit is contained in:
Ivan Smirnov 2021-11-29 22:26:20 +00:00
parent 9ef519164b
commit 83e75b1b65
2 changed files with 10 additions and 7 deletions
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11
src/encode.rs
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@ -1,5 +1,6 @@
use std::slice;
use crate::colorspace::ColorSpace;
use crate::consts::{
QOI_COLOR, QOI_DIFF_16, QOI_DIFF_24, QOI_DIFF_8, QOI_HEADER_SIZE, QOI_INDEX, QOI_PADDING,
QOI_RUN_16, QOI_RUN_8,
@ -122,7 +123,7 @@ fn encode_diff_wrapping<const N: usize>(
}
pub(crate) fn qoi_encode_impl<const N: usize>(
data: &[u8], width: u32, height: u32,
data: &[u8], width: u32, height: u32, colorspace: ColorSpace,
) -> Result<Vec<u8>>
where
Pixel<N>: SupportedChannels,
@ -150,7 +151,7 @@ where
header.width = width;
header.height = height;
header.channels = N as u8;
// TODO: colorspace
header.colorspace = colorspace.into();
buf.write(header.to_bytes());
let mut index = [Pixel::new(); 64];
@ -228,11 +229,13 @@ where
pub fn qoi_encode_to_vec(
data: impl AsRef<[u8]>, width: u32, height: u32, channels: u8,
colorspace: impl Into<ColorSpace>,
) -> Result<Vec<u8>> {
let data = data.as_ref();
let colorspace = colorspace.into();
match channels {
3 => qoi_encode_impl::<3>(data, width, height),
4 => qoi_encode_impl::<4>(data, width, height),
3 => qoi_encode_impl::<3>(data, width, height, colorspace.into()),
4 => qoi_encode_impl::<4>(data, width, height, colorspace.into()),
_ => Err(Error::InvalidChannels { channels }),
}
}

6
src/lib.rs
View file

@ -33,14 +33,14 @@ mod tests {
#[test]
fn kodim_01() {
let (w, h, c, v) = read_png("assets/kodim01.png");
let q = qoi_encode_to_vec(&v, w, h, c).unwrap();
let q = qoi_encode_to_vec(&v, w, h, c, 0).unwrap();
std::fs::write("kodim01.qoi", q.as_slice()).unwrap();
}
#[test]
fn wikipedia() {
let (w, h, c, v) = read_png("assets/en.wikipedia.org.png");
let q = qoi_encode_to_vec(&v, w, h, c).unwrap();
let q = qoi_encode_to_vec(&v, w, h, c, 0).unwrap();
std::fs::write("wikipedia.qoi", q.as_slice()).unwrap();
}
@ -48,7 +48,7 @@ mod tests {
fn roundtrip_3() {
let three_raw = include_bytes!("../assets/three.raw").to_vec();
let (w, h, c) = (572, 354, 3);
let three_qoi = qoi_encode_to_vec(&three_raw, w, h, c).unwrap();
let three_qoi = qoi_encode_to_vec(&three_raw, w, h, c, 0).unwrap();
let (header, three_rtp) = qoi_decode_to_vec(&three_qoi, c).unwrap();
assert_eq!(header.magic, QOI_MAGIC);
assert_eq!(header.width, w);