// /***************************************************************************
// The Disc Image Chef
// ----------------------------------------------------------------------------
//
// Filename : SecureDigital.cs
// Version : 1.0
// Author(s) : Natalia Portillo
//
// Component : Component
//
// Revision : $Revision$
// Last change by : $Author$
// Date : $Date$
//
// --[ Description ] ----------------------------------------------------------
//
// Description
//
// --[ License ] --------------------------------------------------------------
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see .
//
// ----------------------------------------------------------------------------
// Copyright (C) 2011-2015 Claunia.com
// ****************************************************************************/
// //$Id$
using System;
using System.Collections.Generic;
using DiscImageChef.Console;
using DiscImageChef.Core.Logging;
using DiscImageChef.Decoders.MMC;
using DiscImageChef.Devices;
namespace DiscImageChef.Core.Devices.Scanning
{
public static class SecureDigital
{
public static ScanResults Scan(string MHDDLogPath, string IBGLogPath, string devicePath, Device dev)
{
ScanResults results = new ScanResults();
bool aborted;
MHDDLog mhddLog;
IBGLog ibgLog;
byte[] cmdBuf;
bool sense;
results.blocks = 0;
uint[] response;
uint timeout = 5;
double duration = 0;
ushort currentProfile = 0x0001;
uint blocksToRead = 1;
uint blockSize = 512;
bool byteAddressed = true;
if(dev.Type == DeviceType.MMC)
{
ExtendedCSD ecsd = new ExtendedCSD();
CSD csd = new CSD();
sense = dev.ReadExtendedCSD(out cmdBuf, out response, timeout, out duration);
if(!sense)
{
ecsd = Decoders.MMC.Decoders.DecodeExtendedCSD(cmdBuf);
blocksToRead = ecsd.OptimalReadSize;
results.blocks = ecsd.SectorCount;
blockSize = (uint)(ecsd.SectorSize == 1 ? 4096 : 512);
// Supposing it's high-capacity MMC if it has Extended CSD...
byteAddressed = false;
}
if(sense || results.blocks == 0)
{
sense = dev.ReadCSD(out cmdBuf, out response, timeout, out duration);
if(!sense)
{
csd = Decoders.MMC.Decoders.DecodeCSD(cmdBuf);
results.blocks = (ulong)((csd.Size + 1) * Math.Pow(2, csd.SizeMultiplier + 2));
blockSize = (uint)Math.Pow(2, csd.ReadBlockLength);
}
}
}
else if(dev.Type == DeviceType.SecureDigital)
{
Decoders.SecureDigital.CSD csd = new Decoders.SecureDigital.CSD();
sense = dev.ReadCSD(out cmdBuf, out response, timeout, out duration);
if(!sense)
{
csd = Decoders.SecureDigital.Decoders.DecodeCSD(cmdBuf);
results.blocks = (ulong)(csd.Structure == 0 ? (csd.Size + 1) * Math.Pow(2, csd.SizeMultiplier + 2) : (csd.Size + 1) * 1024);
blockSize = (uint)Math.Pow(2, csd.ReadBlockLength);
// Structure >=1 for SDHC/SDXC, so that's block addressed
byteAddressed = csd.Structure == 0;
}
}
if(results.blocks == 0)
{
DicConsole.ErrorWriteLine("Unable to get device size.");
return results;
}
sense = true;
while(true)
{
sense = dev.Read(out cmdBuf, out response, 0, blockSize, blocksToRead, byteAddressed, timeout, out duration);
if(sense)
blocksToRead /= 2;
if(!sense || blocksToRead == 1)
break;
}
if(sense)
{
blocksToRead = 1;
DicConsole.ErrorWriteLine("Device error {0} trying to guess ideal transfer length.", dev.LastError);
return results;
}
results.A = 0; // <3ms
results.B = 0; // >=3ms, <10ms
results.C = 0; // >=10ms, <50ms
results.D = 0; // >=50ms, <150ms
results.E = 0; // >=150ms, <500ms
results.F = 0; // >=500ms
results.errored = 0;
DateTime start;
DateTime end;
results.processingTime = 0;
double currentSpeed = 0;
results.maxSpeed = double.MinValue;
results.minSpeed = double.MaxValue;
results.unreadableSectors = new List();
results.seekMax = double.MinValue;
results.seekMin = double.MaxValue;
results.seekTotal = 0;
const int seekTimes = 1000;
double seekCur = 0;
Random rnd = new Random();
uint seekPos = (uint)rnd.Next((int)results.blocks);
aborted = false;
System.Console.CancelKeyPress += (sender, e) =>
{
e.Cancel = aborted = true;
};
DicConsole.WriteLine("Reading {0} sectors at a time.", blocksToRead);
mhddLog = new MHDDLog(MHDDLogPath, dev, results.blocks, blockSize, blocksToRead);
ibgLog = new IBGLog(IBGLogPath, currentProfile);
start = DateTime.UtcNow;
for(ulong i = 0; i < results.blocks; i += blocksToRead)
{
if(aborted)
break;
if((results.blocks - i) < blocksToRead)
blocksToRead = (byte)(results.blocks - i);
#pragma warning disable RECS0018 // Comparison of floating point numbers with equality operator
if(currentSpeed > results.maxSpeed && currentSpeed != 0)
results.maxSpeed = currentSpeed;
if(currentSpeed < results.minSpeed && currentSpeed != 0)
results.minSpeed = currentSpeed;
#pragma warning restore RECS0018 // Comparison of floating point numbers with equality operator
DicConsole.Write("\rReading sector {0} of {1} ({2:F3} MiB/sec.)", i, results.blocks, currentSpeed);
bool error = dev.Read(out cmdBuf, out response, (uint)i, blockSize, blocksToRead, byteAddressed, timeout, out duration);
if(!error)
{
if(duration >= 500)
{
results.F += blocksToRead;
}
else if(duration >= 150)
{
results.E += blocksToRead;
}
else if(duration >= 50)
{
results.D += blocksToRead;
}
else if(duration >= 10)
{
results.C += blocksToRead;
}
else if(duration >= 3)
{
results.B += blocksToRead;
}
else
{
results.A += blocksToRead;
}
mhddLog.Write(i, duration);
ibgLog.Write(i, currentSpeed * 1024);
}
else
{
results.errored += blocksToRead;
for(ulong b = i; b < i + blocksToRead; b++)
results.unreadableSectors.Add(b);
if(duration < 500)
mhddLog.Write(i, 65535);
else
mhddLog.Write(i, duration);
ibgLog.Write(i, 0);
}
#pragma warning disable IDE0004 // Without this specific cast, it gives incorrect values
currentSpeed = ((double)blockSize * blocksToRead / (double)1048576) / (duration / (double)1000);
#pragma warning restore IDE0004 // Without this specific cast, it gives incorrect values
GC.Collect();
}
end = DateTime.UtcNow;
DicConsole.WriteLine();
mhddLog.Close();
#pragma warning disable IDE0004 // Without this specific cast, it gives incorrect values
ibgLog.Close(dev, results.blocks, blockSize, (end - start).TotalSeconds, currentSpeed * 1024, (((double)blockSize * (double)(results.blocks + 1)) / 1024) / (results.processingTime / 1000), devicePath);
#pragma warning restore IDE0004 // Without this specific cast, it gives incorrect values
for(int i = 0; i < seekTimes; i++)
{
if(aborted)
break;
seekPos = (uint)rnd.Next((int)results.blocks);
DicConsole.Write("\rSeeking to sector {0}...\t\t", seekPos);
dev.Read(out cmdBuf, out response, (uint)seekPos, blockSize, blocksToRead, byteAddressed, timeout, out seekCur);
#pragma warning disable RECS0018 // Comparison of floating point numbers with equality operator
if(seekCur > results.seekMax && seekCur != 0)
results.seekMax = seekCur;
if(seekCur < results.seekMin && seekCur != 0)
results.seekMin = seekCur;
#pragma warning restore RECS0018 // Comparison of floating point numbers with equality operator
results.seekTotal += seekCur;
GC.Collect();
}
DicConsole.WriteLine();
results.processingTime /= 1000;
results.totalTime = (end - start).TotalSeconds;
#pragma warning disable IDE0004 // Without this specific cast, it gives incorrect values
results.avgSpeed = (((double)blockSize * (double)(results.blocks + 1)) / 1048576) / results.processingTime;
#pragma warning restore IDE0004 // Without this specific cast, it gives incorrect values
results.seekTimes = seekTimes;
return results;
}
}
}