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 = $"{Path.Combine(path, fileBase)} - Track {track.Number:D2}.mp3";
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 FFmpegService();
ffmpeg.Run("-f", "s16le", "-ar", "44100", "-ac", "2", "-i", tempfile, "-f", "mp3", "-ab", "192k", mp3Path);
}
finally
{
File.Delete(tempfile);
}
}
}
public static void Extract(Disc disc, string path, string fileBase, Func <bool?> getOverwritePolicy)
{
var dsr = new DiscSectorReader(disc);
var shouldHalt = false;
bool?overwriteExisting = null; // true = overwrite, false = skip existing, null = unset
var tracks = disc.Session1.Tracks;
Parallel.ForEach(tracks, track =>
{
if (shouldHalt)
{
return;
}
if (!track.IsAudio)
{
return;
}
if (track.NextTrack == null)
{
return;
}
int trackLength = track.NextTrack.LBA - track.LBA;
var waveData = new byte[trackLength * 2352];
int startLba = track.LBA;
lock (disc)
for (int sector = 0; sector < trackLength; sector++)
{
dsr.ReadLBA_2352(startLba + sector, waveData, sector * 2352);
}
string mp3Path = $"{Path.Combine(path, fileBase)} - Track {track.Number:D2}.mp3";
if (File.Exists(mp3Path))
{
overwriteExisting ??= getOverwritePolicy();
switch (overwriteExisting)
{
case true: // "Yes" -- overwrite
File.Delete(mp3Path);
break;
case false: // "No" -- skip
return;
case null: // "Cancel" -- halt
shouldHalt = true;
return;
}
}
string tempfile = Path.GetTempFileName();
try
{
File.WriteAllBytes(tempfile, waveData);
FFmpegService.Run("-f", "s16le", "-ar", "44100", "-ac", "2", "-i", tempfile, "-f", "mp3", "-ab", "192k", mp3Path);
}
finally
{
File.Delete(tempfile);
}
});
}
