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adjust image size

This commit is contained in:
Magnus Ulimoen 2020-07-24 21:12:23 +02:00
parent e0c5acefb7
commit c860fd09a4
1 changed files with 9 additions and 10 deletions
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19
src/main.rs
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@ -348,22 +348,24 @@ impl<'a> Acquisition<'a> {
fn get_image(self) -> Result<(), Error> {
let parameters = self.handle.parameters()?;
let bytesize = parameters.bytes_per_line() * parameters.lines() * parameters.depth();
let mut image = Vec::<u8>::with_capacity(bytesize as _);
let bytesize = parameters.bytes_per_line() * parameters.depth();
let mut image = vec![0_u8; bytesize as _];
let mut len = 0;
let mut buffer = &mut image[..];
// unsafe { checked(|| sane_set_io_mode(self.handle.0, SANE_FALSE as _))? };
unsafe {
'read_loop: loop {
let mut len = 0;
let e = checked(|| {
sane_read(
self.handle.0,
image.as_mut_ptr(),
image.len() as _,
buffer.as_mut_ptr(),
buffer.len() as _,
&mut len,
)
});
buffer = &mut buffer[len as usize..];
if let Err(err) = e {
if err.is_eof() {
break 'read_loop;
@ -371,13 +373,10 @@ impl<'a> Acquisition<'a> {
return Err(err);
}
}
if len != 0 {
panic!()
}
std::thread::sleep(std::time::Duration::from_millis(100));
// std::thread::sleep(std::time::Duration::from_millis(100));
}
}
println!("{}", len);
assert_eq!(buffer.len(), 0);
Ok(())
}