bendns' repos / pnm
pnm decoding and encoding
Diffstat (limited to 'src/ppm.rs')
-rw-r--r--src/ppm.rs12
1 files changed, 8 insertions, 4 deletions
diff --git a/src/ppm.rs b/src/ppm.rs
index 950e4d0..349a424 100644
--- a/src/ppm.rs
+++ b/src/ppm.rs
@@ -56,7 +56,9 @@ pub mod plain {
// SAFETY: iterator over `pixels` elements.
unsafe { out.put(b) };
}
- if unsafe { out.sub_ptr(into.buf().as_mut_ptr().cast()) < (pixels as usize * 3) } {
+ if unsafe {
+ out.offset_from_unsigned(into.buf().as_mut_ptr().cast()) < (pixels as usize * 3)
+ } {
return Err(Error::MissingData);
}
// SAFETY: checked that the pixels have been initialized.
@@ -79,7 +81,7 @@ pub mod plain {
// cosmetic
o.push(b'\n');
}
- o.sub_ptr(out)
+ o.offset_from_unsigned(out)
}
#[doc = include_str!("est.md")]
@@ -135,7 +137,7 @@ pub mod raw {
encodeu32(x.height(), &mut o);
o.put(*b" 255\n");
o.copy_from(x.buffer().as_ptr(), x.len());
- o.sub_ptr(out) + x.len()
+ o.offset_from_unsigned(out) + x.len()
}
#[doc = include_str!("decode_body_into.md")]
@@ -146,7 +148,9 @@ pub mod raw {
// SAFETY: took `pixels` pixels.
unsafe { out.put(b) };
}
- if unsafe { out.sub_ptr(into.buf().as_mut_ptr().cast()) < (pixels as usize * 3) } {
+ if unsafe {
+ out.offset_from_unsigned(into.buf().as_mut_ptr().cast()) < (pixels as usize * 3)
+ } {
return Err(Error::MissingData);
}
// SAFETY: checked that the pixels have been initialized.