From 6dec9ba5a5c90704567022f68ecddde3d2dfe698 Mon Sep 17 00:00:00 2001
From: Joshua Goins <josh@redstrate.com>
Date: Mon, 29 Apr 2024 20:11:32 -0400
Subject: [PATCH] Add SCD module

---
 src/lib.rs |  6 ++++++
 src/scd.rs | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 src/scd.rs

diff --git a/src/lib.rs b/src/lib.rs
index bb5c68d..e4d374d 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -129,3 +129,9 @@ pub const PHYSIS_VERSION: &str = env!("CARGO_PKG_VERSION");
 
 /// Reading ULD files
 pub mod uld;
+
+/// Reading SGB files
+pub mod sgb;
+
+/// Reading SCD files
+pub mod scd;
diff --git a/src/scd.rs b/src/scd.rs
new file mode 100644
index 0000000..214c5b8
--- /dev/null
+++ b/src/scd.rs
@@ -0,0 +1,61 @@
+// SPDX-FileCopyrightText: 2024 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+use std::io::Cursor;
+
+use crate::ByteSpan;
+use binrw::binrw;
+use binrw::BinRead;
+
+#[binrw]
+#[derive(Debug)]
+#[brw(little)]
+struct ScdHeader {
+    #[br(count = 4)]
+    #[bw(pad_size_to = 4)]
+    #[bw(map = |x : &String | x.as_bytes())]
+    #[br(map = | x: Vec<u8> | String::from_utf8(x).unwrap().trim_matches(char::from(0)).to_string())]
+    pub file_type: String,
+
+    #[br(count = 4)]
+    #[bw(pad_size_to = 4)]
+    #[bw(map = |x : &String | x.as_bytes())]
+    #[br(map = | x: Vec<u8> | String::from_utf8(x).unwrap().trim_matches(char::from(0)).to_string())]
+    pub sub_type: String,
+
+    version: u32,
+    endian_type: u32,
+    alignment_bits: u8,
+    offset: u16,
+    datetime: u64,
+
+    #[br(pad_before = 4)]
+    sound_count: u16,
+    track_count: u16,
+    audio_count: u16,
+    number: u16,
+
+    track_offset: u32,
+    audio_offset: u32,
+    layout_offset: u32,
+    routing_offset: u32,
+    attribute_offset: u32,
+
+    #[br(pad_after = 2)]
+    end_of_file_padding_size: u16,
+}
+
+#[derive(Debug)]
+pub struct Scd {
+
+}
+
+impl Scd {
+    /// Reads an existing ULD file
+    pub fn from_existing(buffer: ByteSpan) -> Option<Self> {
+        let mut cursor = Cursor::new(buffer);
+        let header = ScdHeader::read(&mut cursor).ok()?;
+
+        Some(Scd{})
+    }
+}