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implement encoding options

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This commit is contained in:
Dennis Ranke
2022-09-24 20:52:39 +02:00
parent ced6cc8c32
commit 23872b3222
6 changed files with 87 additions and 54 deletions
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17
src/greedy_packer.rs
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@@ -1,17 +1,16 @@
use crate::lz;
use crate::match_finder::MatchFinder;
use crate::rans::RansCoder;
use crate::ProgressCallback;
use crate::{lz, Config};
pub fn pack(
data: &[u8],
use_bitstream: bool,
parity_contexts: usize,
config: &Config,
mut progress_callback: Option<ProgressCallback>,
) -> Vec<u8> {
let mut match_finder = MatchFinder::new(data);
let mut rans_coder = RansCoder::new(use_bitstream);
let mut state = lz::CoderState::new(parity_contexts);
let mut rans_coder = RansCoder::new(config.use_bitstream);
let mut state = lz::CoderState::new(config.parity_contexts);
let mut pos = 0;
while pos < data.len() {
@@ -27,7 +26,7 @@ pub fn pack(
offset: offset as u32,
len: m.length as u32,
}
.encode(&mut rans_coder, &mut state);
.encode(&mut rans_coder, &mut state, config);
pos += m.length;
encoded_match = true;
}
@@ -46,7 +45,7 @@ pub fn pack(
offset: offset as u32,
len: length as u32,
}
.encode(&mut rans_coder, &mut state);
.encode(&mut rans_coder, &mut state, config);
pos += length;
encoded_match = true;
}
@@ -54,11 +53,11 @@ pub fn pack(
}
if !encoded_match {
lz::Op::Literal(data[pos]).encode(&mut rans_coder, &mut state);
lz::Op::Literal(data[pos]).encode(&mut rans_coder, &mut state, config);
pos += 1;
}
}
lz::encode_eof(&mut rans_coder, &mut state);
lz::encode_eof(&mut rans_coder, &mut state, config);
rans_coder.finish()
}