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Basic hardcoded CD reading (.bin)

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Blue 2019-04-29 20:13:13 +02:00
parent 37297ce936
commit 4d441c6ff8
1 changed files with 38 additions and 0 deletions
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ProjectPSX/Devices/CD.cs Normal file
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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);
}
}
}