drive read offset detection

CUETools.AccurateRip/AccurateRip.cs

@@ -414,6 +414,71 @@ namespace CUETools.AccurateRip
 			return r;
 		}
 
+		static string CachePath
+		{
+			get
+			{
+				string cache = System.IO.Path.Combine(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "CUE Tools"), "AccurateRipCache");
+				if (!Directory.Exists(cache))
+					Directory.CreateDirectory(cache);
+				return cache;
+			}
+		}
+
+		public static bool FindDriveReadOffset(string driveName, out int driveReadOffset)
+		{
+			string fileName = System.IO.Path.Combine(CachePath, "DriveOffsets.bin");
+			if (!File.Exists(fileName))
+			{
+				HttpWebRequest req = (HttpWebRequest)WebRequest.Create("http://www.accuraterip.com/accuraterip/DriveOffsets.bin");
+				req.Method = "GET";
+				try
+				{
+					HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
+					if (resp.StatusCode != HttpStatusCode.OK)
+					{
+						driveReadOffset = 0;
+						return false;
+					}
+					Stream respStream = resp.GetResponseStream();
+					FileStream myOffsetsSaved = new FileStream(fileName, FileMode.CreateNew, FileAccess.Write);
+					byte [] buff = new byte[0x8000];
+					do
+					{
+						int count = respStream.Read(buff, 0, buff.Length);
+						if (count == 0) break;
+						myOffsetsSaved.Write(buff, 0, count);
+					} while (true);
+					respStream.Close();
+					myOffsetsSaved.Close();
+				}
+				catch (WebException ex)
+				{
+					driveReadOffset = 0;
+					return false;
+				}
+			}
+			FileStream myOffsets = new FileStream(fileName, FileMode.Open, FileAccess.Read);
+			BinaryReader offsetReader = new BinaryReader(myOffsets);
+			do
+			{
+				short readOffset = offsetReader.ReadInt16();
+				byte[] name = offsetReader.ReadBytes(0x21);
+				byte[] misc = offsetReader.ReadBytes(0x22);
+				int len = name.Length;
+				while (len > 0 && name[len - 1] == '\0') len--;
+				string strname = Encoding.ASCII.GetString(name,0,len);
+				if (strname == driveName)
+				{
+					driveReadOffset = readOffset;
+					return true;
+				}
+			} while (myOffsets.Position + 0x45 <= myOffsets.Length);
+			offsetReader.Close();
+			driveReadOffset = 0;
+			return false;
+		}
+
 		public static string CalculateCDDBId(CDImageLayout toc)
 		{
 			uint cddbDiscId = 0;

CUETools.Ripper.Console/Program.cs

@@ -34,12 +34,6 @@ namespace CUERipper
 {
 	class Program
 	{
-		static void Usage()
-		{
-			Console.WriteLine("Usage    : CUERipper.exe <file.wav>");
-			Console.WriteLine();
-		}
-
 		static void Main(string[] args)
 		{
 			string programVersion = "CUERipper v1.9.3 Copyright (C) 2008 Gregory S. Chudov";
@@ -47,12 +41,7 @@ namespace CUERipper
 			Console.WriteLine("{0}", programVersion);
 			Console.WriteLine("This is free software under the GNU GPLv3+ license; There is NO WARRANTY, to");
 			Console.WriteLine("the extent permitted by law. <http://www.gnu.org/licenses/> for details.");
-			if (args.Length < 1)
+
-			{
-				Usage();
-				return;
-			}
-			string destFile = args[0];
 			char[] drives = CDDriveReader.DrivesAvailable();
 			if (drives.Length < 1)
 			{
@@ -66,7 +55,10 @@ namespace CUERipper
 			{
 				CDDriveReader audioSource = new CDDriveReader();
 				audioSource.Open(driveLetter);
-				audioSource.DriveOffset = 48;
+				int driveOffset;
+				if (!AccurateRipVerify.FindDriveReadOffset(audioSource.ARName, out driveOffset))
+					throw new Exception("Failed to find drive read offset for drive" + audioSource.ARName);
+				audioSource.DriveOffset = driveOffset;
 			
 				//bool toStdout = false;
 				AccurateRipVerify arVerify = new AccurateRipVerify(audioSource.TOC);
@@ -89,17 +81,16 @@ namespace CUERipper
 					release = null;
 				}
 
-				if (destFile == null || destFile == "")
+				string destFile = (release == null) ? "cdimage.flac" : release.GetArtist() + " - " + release.GetTitle() + ".flac";
-					destFile = (release == null) ? "cdimage.flac" : release.GetArtist() + " - " + release.GetTitle() + ".flac";
 
 				Console.WriteLine("Drive       : {0}", audioSource.Path);
+				Console.WriteLine("Read offset : {0}", audioSource.DriveOffset);
 				Console.WriteLine("Filename    : {0}", destFile);
 				Console.WriteLine("Disk length : {0}", CDImageLayout.TimeToString(audioSource.TOC.AudioLength));
 				Console.WriteLine("AccurateRip : {0}", arVerify.ARStatus == null ? "ok" : arVerify.ARStatus);
 				Console.WriteLine("MusicBrainz : {0}", release == null ? "not found" : release.GetArtist() + " - " + release.GetTitle());
 
 				IAudioDest audioDest = new FLACWriter(destFile, audioSource.BitsPerSample, audioSource.ChannelCount, audioSource.SampleRate);
-				//IAudioDest audioDest = new WAVWriter(destFile, audioSource.BitsPerSample, audioSource.ChannelCount, audioSource.SampleRate, toStdout ? Console.OpenStandardOutput() : null);
 				audioDest.FinalSampleCount = (long)audioSource.Length;
 
 

CUETools.Ripper.SCSI/SCSIDrive.cs

@@ -389,6 +389,14 @@ namespace CUETools.Ripper.SCSI
 			}
 		}
 
+		public string ARName
+		{
+			get
+			{
+				return m_info.InquiryData.VendorIdentification + " - " + m_info.InquiryData.ProductIdentification;
+			}
+		}
+
 		public ulong Position
 		{
 			get

CUEToolsLib/Main.cs

@@ -489,14 +489,13 @@ namespace CUETools.Processor
 			{
 				CDDriveReader ripper = new CDDriveReader();
 				ripper.Open(pathIn[0]);
-				// We needed to clone TOC in case we reuse the ripper, because it's going to modify it.
+				_toc = ripper.TOC;
-				//_toc = (CDImageLayout)ripper.TOC.Clone();
+				_driveName = ripper.ARName;
-				_toc = (CDImageLayout)ripper.TOC;
-				_driveName = ripper.Path;
-				_driveOffset = ripper.DriveOffset = 48;
 				ripper.Close();
 				if (_toc.AudioTracks > 0)
 				{
+					if (!AccurateRipVerify.FindDriveReadOffset(_driveName, out _driveOffset))
+						throw new Exception("Failed to find drive read offset for drive" + _driveName);
 					_isCD = true;
 					SourceInfo cdInfo;
 					cdInfo.Path = pathIn;