dranke/upkr
1
0
Fork 0
mirror of https://github.com/exoticorn/upkr.git synced 2026-01-20 19:46:42 +01:00
Code Issues Projects Releases Wiki Activity

clean up command line interface

Browse Source
This commit is contained in:
Dennis Ranke
2022-09-21 22:45:06 +02:00
parent 8f33ae0b1e
commit 31c31bdcfb
5 changed files with 141 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/lz.rs
View File

@@ -106,9 +106,9 @@ impl CoderState {
}
}
pub fn unpack(packed_data: &[u8], use_bitstream: bool, parity_contexts: usize) -> Vec<u8> {
let mut decoder = RansDecoder::new(packed_data, use_bitstream);
let mut contexts = ContextState::new((1 + 255) * parity_contexts + 1 + 64 + 64);
pub fn unpack(packed_data: &[u8], config: crate::Config) -> Vec<u8> {
let mut decoder = RansDecoder::new(packed_data, config.use_bitstream);
let mut contexts = ContextState::new((1 + 255) * config.parity_contexts + 1 + 64 + 64);
let mut result = vec![];
let mut offset = 0;
let mut prev_was_match = false;
@@ -131,17 +131,26 @@ pub fn unpack(packed_data: &[u8], use_bitstream: bool, parity_contexts: usize) -
}
loop {
let literal_base = result.len() % parity_contexts * 256;
let literal_base = result.len() % config.parity_contexts * 256;
if decoder.decode_with_context(&mut contexts.context_mut(literal_base)) {
if prev_was_match
|| decoder.decode_with_context(&mut contexts.context_mut(256 * parity_contexts))
|| decoder
.decode_with_context(&mut contexts.context_mut(256 * config.parity_contexts))
{
offset = decode_length(&mut decoder, &mut contexts, 256 * parity_contexts + 1) - 1;
offset = decode_length(
&mut decoder,
&mut contexts,
256 * config.parity_contexts + 1,
) - 1;
if offset == 0 {
break;
}
}
let length = decode_length(&mut decoder, &mut contexts, 256 * parity_contexts + 65);
let length = decode_length(
&mut decoder,
&mut contexts,
256 * config.parity_contexts + 65,
);
for _ in 0..length {
result.push(result[result.len() - offset]);
}