FIX BSE decode

This commit is contained in:
2025-06-12 17:59:39 +08:00
parent ecaa9cc213
commit 8bed66d4f1
4 changed files with 114 additions and 40 deletions

72
Cargo.lock generated
View File

@@ -2,6 +2,12 @@
# It is not intended for manual editing.
version = 4
[[package]]
name = "adler2"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
[[package]]
name = "anstream"
version = "0.6.18"
@@ -58,6 +64,12 @@ version = "1.0.98"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487"
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bitflags"
version = "2.9.1"
@@ -116,6 +128,15 @@ version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
[[package]]
name = "crc32fast"
version = "1.4.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3"
dependencies = [
"cfg-if",
]
[[package]]
name = "csv"
version = "1.3.1"
@@ -146,6 +167,25 @@ dependencies = [
"cfg-if",
]
[[package]]
name = "fdeflate"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e6853b52649d4ac5c0bd02320cddc5ba956bdb407c4b75a2c6b75bf51500f8c"
dependencies = [
"simd-adler32",
]
[[package]]
name = "flate2"
version = "1.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4a3d7db9596fecd151c5f638c0ee5d5bd487b6e0ea232e5dc96d5250f6f94b1d"
dependencies = [
"crc32fast",
"miniz_oxide",
]
[[package]]
name = "getrandom"
version = "0.3.3"
@@ -206,6 +246,16 @@ version = "2.7.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
[[package]]
name = "miniz_oxide"
version = "0.8.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
dependencies = [
"adler2",
"simd-adler32",
]
[[package]]
name = "msg_tool"
version = "0.1.0"
@@ -217,6 +267,7 @@ dependencies = [
"int-enum",
"lazy_static",
"msg_tool_macro",
"png",
"rand",
"serde",
"serde_json",
@@ -238,6 +289,19 @@ version = "1.21.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
[[package]]
name = "png"
version = "0.17.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "82151a2fc869e011c153adc57cf2789ccb8d9906ce52c0b39a6b5697749d7526"
dependencies = [
"bitflags 1.3.2",
"crc32fast",
"fdeflate",
"flate2",
"miniz_oxide",
]
[[package]]
name = "ppv-lite86"
version = "0.2.21"
@@ -350,6 +414,12 @@ dependencies = [
"serde",
]
[[package]]
name = "simd-adler32"
version = "0.3.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
[[package]]
name = "strsim"
version = "0.11.1"
@@ -479,7 +549,7 @@ version = "0.39.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
dependencies = [
"bitflags",
"bitflags 2.9.1",
]
[[package]]

View File

@@ -11,20 +11,24 @@ encoding_rs = "0.8"
int-enum = { version = "1.2", optional = true }
lazy_static = "1.5.0"
msg_tool_macro = { path = "./msg_tool_macro" }
png = { version = "0.17", optional = true }
rand = { version = "0.9", optional = true }
serde = { version = "1", features = ["derive"] }
serde_json = "1"
unicode-segmentation = "1.12"
[features]
default = ["bgi", "bgi-arc", "circus", "escude", "escude-arc", "yaneurao", "yaneurao-itufuru"]
default = ["bgi", "bgi-arc", "bgi-img", "circus", "escude", "escude-arc", "yaneurao", "yaneurao-itufuru"]
bgi = []
bgi-arc = ["bgi", "utils-bit-stream"]
bgi-img = ["image"]
circus = []
escude = ["int-enum"]
escude-arc = ["escude", "rand", "utils-bit-stream"]
yaneurao = []
yaneurao-itufuru = ["yaneurao"]
# basic feature
image = ["png"]
# utils feature
utils-bit-stream = []

View File

@@ -5,37 +5,22 @@ use anyhow::Result;
use std::io::{Read, Seek};
pub trait BseGenerator {
fn next_key(&mut self) -> u32;
}
fn rtor(v: u32, count: u8) -> u32 {
let count = count & 0x1F;
return v >> count | v << (32 - count);
}
fn rot_byte_r(v: u8, count: u8) -> u8 {
let count = count & 0x07;
return v >> count | v << (8 - count);
}
fn rot_byte_l(v: u8, count: u8) -> u8 {
let count = count & 0x07;
return v << count | v >> (8 - count);
fn next_key(&mut self) -> i32;
}
pub struct BseGenerator100 {
key: u32,
key: i32,
}
impl BseGenerator100 {
pub fn new(key: u32) -> Self {
pub fn new(key: i32) -> Self {
BseGenerator100 { key }
}
}
impl BseGenerator for BseGenerator100 {
fn next_key(&mut self) -> u32 {
let key = self
fn next_key(&mut self) -> i32 {
let key = (self
.key
.overflowing_mul(257)
.0
@@ -44,26 +29,26 @@ impl BseGenerator for BseGenerator100 {
.overflowing_add(self.key.overflowing_mul(97).0)
.0
.overflowing_add(23)
.0
.0) as u32
^ 0xA6CD9B75;
self.key = rtor(key, 16);
self.key = key.rotate_right(16) as i32;
self.key
}
}
pub struct BseGenerator101 {
key: u32,
key: i32,
}
impl BseGenerator101 {
pub fn new(key: u32) -> Self {
pub fn new(key: i32) -> Self {
BseGenerator101 { key }
}
}
impl BseGenerator for BseGenerator101 {
fn next_key(&mut self) -> u32 {
let key = self
fn next_key(&mut self) -> i32 {
let key = (self
.key
.overflowing_mul(127)
.0
@@ -72,9 +57,9 @@ impl BseGenerator for BseGenerator101 {
.overflowing_add(self.key.overflowing_mul(83).0)
.0
.overflowing_add(53)
.0
.0) as u32
^ 0xB97A7E5C;
self.key = rtor(key, 16);
self.key = key.rotate_right(16) as i32;
self.key
}
}
@@ -89,14 +74,15 @@ pub struct BseReader<T: Read + Seek, F: Fn(&[u8], usize, &str) -> Option<&'stati
impl<T: Read + Seek, F: Fn(&[u8], usize, &str) -> Option<&'static ScriptType>> BseReader<T, F> {
pub fn new(mut reader: T, detect: F, filename: &str) -> Result<Self> {
let version = reader.peek_u16_at(0x8)?;
reader.seek(std::io::SeekFrom::Start(8))?;
let version = reader.read_u16()?;
if version != 0x0100 && version != 0x0101 {
return Err(anyhow::anyhow!("Unsupported BSE version: {}", version));
}
let _checksum = reader.peek_u16_at(0xA)?;
let key: u32 = reader.peek_u32_at(0xC)?;
let _checksum = reader.read_u16()?;
let key = reader.read_i32()?;
let mut header = [0u8; 0x40];
reader.peek_extract_at(0x10, &mut header)?;
reader.read_exact(&mut header)?;
let generator: Box<dyn BseGenerator> = if version == 0x0100 {
Box::new(BseGenerator100::new(key))
} else {
@@ -115,17 +101,19 @@ impl<T: Read + Seek, F: Fn(&[u8], usize, &str) -> Option<&'static ScriptType>> B
fn decode_header(data: &mut [u8; 0x40], mut generator: Box<dyn BseGenerator>) -> Result<()> {
let mut decoded = [false; 0x40];
for _ in 0..0x40 {
let mut dst = generator.next_key() as usize & 0x3F;
let mut dst = (generator.next_key() & 0x3F) as usize;
while decoded[dst] {
dst = (dst + 1) & 0x3F;
}
let shift = (generator.next_key() & 7) as u8;
let right_shift = generator.next_key() & 1 == 0;
let symbol = data[dst].overflowing_sub(generator.next_key() as u8).0;
let shift = generator.next_key() & 7;
let right_shift = (generator.next_key() & 1) == 0;
let key_byte = generator.next_key();
let symbol = (data[dst] as i32).wrapping_sub(key_byte);
let symbol = symbol as u8;
data[dst] = if right_shift {
rot_byte_r(symbol, shift)
symbol.rotate_right(shift as u32)
} else {
rot_byte_l(symbol, shift)
symbol.rotate_left(shift as u32)
};
decoded[dst] = true;
}

View File

@@ -299,3 +299,15 @@ pub struct ReplacementTable {
#[serde(flatten)]
pub map: HashMap<String, String>,
}
#[cfg(feature = "image")]
pub enum ImageColorType {
Grayscale,
Rgb24,
Rgba32,
}
#[cfg(feature = "image")]
pub enum ImageOutputType {
Png,
}