/// <summary>
/// calculates the complete disc hash for matching to a redump
/// </summary>
public uint Calculate_PSX_RedumpHash()
{
//a special CRC32 is used to help us match redump's DB
SpecialCRC32 crc = new SpecialCRC32();
byte[] buffer2352 = new byte[2352];
var dsr = new DiscSectorReader(disc);
dsr.Policy.DeterministicClearBuffer = false; //live dangerously
//read all sectors for redump hash
for (int i = 0; i < disc.Session1.LeadoutLBA; i++)
{
dsr.ReadLBA_2352(i, buffer2352, 0);
crc.Add(buffer2352, 0, 2352);
}
return crc.Result;
}
public static void Extract(Disc disc, string path, string filebase)
{
var dsr = new DiscSectorReader(disc);
bool confirmed = false;
var tracks = disc.Session1.Tracks;
foreach (var track in tracks)
{
if (!track.IsAudio)
continue;
int trackLength = track.NextTrack.LBA - track.LBA;
var waveData = new byte[trackLength * 2352];
int startLba = track.LBA;
for (int sector = 0; sector < trackLength; sector++)
dsr.ReadLBA_2352(startLba + sector, waveData, sector * 2352);
string mp3Path = string.Format("{0} - Track {1:D2}.mp3", Path.Combine(path, filebase), track.Number);
if (File.Exists(mp3Path))
{
if (!confirmed)
{
var dr = MessageBox.Show("This file already exists. Do you want extraction to proceed overwriting files, or cancel the entire operation immediately?", "File already exists", MessageBoxButtons.OKCancel);
if (dr == DialogResult.Cancel) return;
confirmed = true;
}
File.Delete(mp3Path);
}
string tempfile = Path.GetTempFileName();
try
{
File.WriteAllBytes(tempfile, waveData);
var ffmpeg = new FFMpeg();
ffmpeg.Run("-f", "s16le", "-ar", "44100", "-ac", "2", "-i", tempfile, "-f", "mp3", "-ab", "192k", mp3Path);
}
finally
{
File.Delete(tempfile);
}
}
}
/// <summary>
/// calculates the complete disc hash for matching to a redump
/// </summary>
public uint Calculate_PSX_RedumpHash()
{
//a special CRC32 is used to help us match redump's DB
SpecialCRC32 crc = new SpecialCRC32();
byte[] buffer2352 = new byte[2352];
var dsr = new DiscSectorReader(disc);
dsr.Policy.DeterministicClearBuffer = false; //live dangerously
//read all sectors for redump hash
for (int i = 0; i < disc.Session1.LeadoutLBA; i++)
{
dsr.ReadLBA_2352(i, buffer2352, 0);
crc.Add(buffer2352, 0, 2352);
}
return(crc.Result);
}
/// <summary>
/// calculates the hash for quick PSX Disc identification
/// </summary>
public uint Calculate_PSX_BizIDHash()
{
//notes about the hash:
//"Arc the Lad II (J) 1.0 and 1.1 conflict up to 25 sectors (so use 26)
//Tekken 3 (Europe) (Alt) and Tekken 3 (Europe) conflict in track 2 and 3 unfortunately, not sure what to do about this yet
//the TOC isn't needed!
//but it will help detect dumps with mangled TOCs which are all too common
//
//a possibly special CRC32 is used to help us match redump's DB elsewhere
SpecialCRC32 crc = new SpecialCRC32();
byte[] buffer2352 = new byte[2352];
var dsr = new DiscSectorReader(disc)
{
Policy = { DeterministicClearBuffer = false } // live dangerously
};
//hash the TOC
crc.Add((int)disc.TOC.Session1Format);
crc.Add(disc.TOC.FirstRecordedTrackNumber);
crc.Add(disc.TOC.LastRecordedTrackNumber);
for (int i = 1; i <= 100; i++)
{
//if (disc.TOC.TOCItems[i].Exists) Console.WriteLine("{0:X8} {1:X2} {2:X2} {3:X8}", crc.Current, (int)disc.TOC.TOCItems[i].Control, disc.TOC.TOCItems[i].Exists ? 1 : 0, disc.TOC.TOCItems[i].LBATimestamp.Sector); //a little debugging
crc.Add((int)disc.TOC.TOCItems[i].Control);
crc.Add(disc.TOC.TOCItems[i].Exists ? 1 : 0);
crc.Add((int)disc.TOC.TOCItems[i].LBA);
}
//hash first 26 sectors
for (int i = 0; i < 26; i++)
{
dsr.ReadLBA_2352(i, buffer2352, 0);
crc.Add(buffer2352, 0, 2352);
}
return(crc.Result);
}
// gets an identifying hash. hashes the first 512 sectors of
// the first data track on the disc.
//TODO - this is a very platform-specific thing. hashing the TOC may be faster and be just as effective. so, rename it appropriately
public string OldHash()
{
byte[] buffer = new byte[512 * 2352];
DiscSectorReader dsr = new DiscSectorReader(disc);
foreach (var track in disc.Session1.Tracks)
{
if (track.IsAudio)
{
continue;
}
int lba_len = Math.Min(track.NextTrack.LBA, 512);
for (int s = 0; s < 512 && s < lba_len; s++)
{
dsr.ReadLBA_2352(track.LBA + s, buffer, s * 2352);
}
return(buffer.HashMD5(0, lba_len * 2352));
}
return("no data track found");
}
/// <summary>
/// calculates the hash for quick PSX Disc identification
/// </summary>
public uint Calculate_PSX_BizIDHash()
{
//notes about the hash:
//"Arc the Lad II (J) 1.0 and 1.1 conflict up to 25 sectors (so use 26)
//Tekken 3 (Europe) (Alt) and Tekken 3 (Europe) conflict in track 2 and 3 unfortunately, not sure what to do about this yet
//the TOC isn't needed!
//but it will help detect dumps with mangled TOCs which are all too common
//
//a possibly special CRC32 is used to help us match redump's DB elsewhere
SpecialCRC32 crc = new SpecialCRC32();
byte[] buffer2352 = new byte[2352];
var dsr = new DiscSectorReader(disc);
dsr.Policy.DeterministicClearBuffer = false; //live dangerously
//hash the TOC
crc.Add((int)disc.TOC.Session1Format);
crc.Add(disc.TOC.FirstRecordedTrackNumber);
crc.Add(disc.TOC.LastRecordedTrackNumber);
for (int i = 1; i <= 100; i++)
{
//if (disc.TOC.TOCItems[i].Exists) Console.WriteLine("{0:X8} {1:X2} {2:X2} {3:X8}", crc.Current, (int)disc.TOC.TOCItems[i].Control, disc.TOC.TOCItems[i].Exists ? 1 : 0, disc.TOC.TOCItems[i].LBATimestamp.Sector); //a little debugging
crc.Add((int)disc.TOC.TOCItems[i].Control);
crc.Add(disc.TOC.TOCItems[i].Exists ? 1 : 0);
crc.Add((int)disc.TOC.TOCItems[i].LBA);
}
//hash first 26 sectors
for (int i = 0; i < 26; i++)
{
dsr.ReadLBA_2352(i, buffer2352, 0);
crc.Add(buffer2352, 0, 2352);
}
return crc.Result;
}
// gets an identifying hash. hashes the first 512 sectors of
// the first data track on the disc.
//TODO - this is a very platform-specific thing. hashing the TOC may be faster and be just as effective. so, rename it appropriately
public string OldHash()
{
byte[] buffer = new byte[512 * 2352];
DiscSectorReader dsr = new DiscSectorReader(disc);
foreach (var track in disc.Session1.Tracks)
{
if (track.IsAudio)
continue;
int lba_len = Math.Min(track.NextTrack.LBA, 512);
for (int s = 0; s < 512 && s < lba_len; s++)
dsr.ReadLBA_2352(track.LBA + s, buffer, s * 2352);
return buffer.HashMD5(0, lba_len * 2352);
}
return "no data track found";
}
