From 4d441c6ff8efe054ef2f216371005dc37b390a28 Mon Sep 17 00:00:00 2001
From: Blue <bluestorm.android@gmail.com>
Date: Mon, 29 Apr 2019 20:13:13 +0200
Subject: [PATCH] Basic hardcoded CD reading (.bin)

---
 ProjectPSX/Devices/CD.cs | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 ProjectPSX/Devices/CD.cs

diff --git a/ProjectPSX/Devices/CD.cs b/ProjectPSX/Devices/CD.cs
new file mode 100644
index 0000000..b9c5ecd
--- /dev/null
+++ b/ProjectPSX/Devices/CD.cs
@@ -0,0 +1,38 @@
+using System.IO;
+using System;
+
+namespace ProjectPSX.Devices {
+    internal class CD {
+
+        private const int BYTES_PER_SECTOR_RAW = 2352;
+        private const int BYTES_PER_SECTOR_DATA = 2048;
+        private const int BYTES_PER_SECTOR_HEADER = 24;
+
+        private FileStream stream;
+        private BinaryReader reader;
+
+        public CD() {
+            //temporary hard coded
+            stream = new FileStream("./crash.bin", FileMode.Open, FileAccess.Read);
+            reader = new BinaryReader(stream);
+        }
+
+        public byte[] read(bool isSectorSizeRAW, int loc) {
+            int bytesToRead;
+            int sectorHeaderOffset;
+            if (isSectorSizeRAW){
+                bytesToRead = BYTES_PER_SECTOR_RAW;
+                sectorHeaderOffset = 0;
+            } else {
+                bytesToRead = BYTES_PER_SECTOR_DATA;
+                sectorHeaderOffset = BYTES_PER_SECTOR_HEADER;
+            }
+
+            stream.Seek(loc * BYTES_PER_SECTOR_RAW + sectorHeaderOffset, 0);
+            //Console.WriteLine("LOC = " + loc  + " " + ((loc * BYTES_PER_SECTOR_RAW) + sectorHeaderOffset).ToString("x8"));
+            //Console.ReadLine();
+            return reader.ReadBytes(bytesToRead);
+        }
+
+    }
+}
\ No newline at end of file