private void buttonExtract_Click(object sender, EventArgs e)
{
labelProgress.Visible = true;
progressBarMain.Visible = true;
buttonExtract.Enabled = false;
selectedTrack = (MkvTrack)comboBoxTrack.SelectedItem;
backgroundWorkerMain.RunWorkerAsync();
}
/// <summary>
/// Get list of audio and subtitle tracks in the provided .mkv file.
/// </summary>
public static List <MkvTrack> getTrackList(string mkvFile)
{
List <MkvTrack> trackList = new List <MkvTrack>();
if (Path.GetExtension(mkvFile) != ".mkv")
{
return(trackList);
}
string args = $"\"{mkvFile}\"";
string mkvIinfo = UtilsCommon.startProcessAndGetStdout(ConstantSettings.PathMkvInfoExeRel,
ConstantSettings.PathMkvInfoExeFull, args);
if (mkvIinfo == "Error.")
{
return(trackList);
}
mkvIinfo = mkvIinfo.Replace("\r\r", "");
string[] lines = mkvIinfo.Split('\n');
TrackListParseState state = TrackListParseState.SEARCH_FOR_START_OF_TRACKS;
MkvTrack curTrack = new MkvTrack();
foreach (string line in lines)
{
switch (state)
{
case TrackListParseState.SEARCH_FOR_START_OF_TRACKS:
{
if (line.StartsWith("|+ Segment tracks"))
{
state = TrackListParseState.GET_NEXT_TRACK;
}
break;
}
case TrackListParseState.GET_NEXT_TRACK:
{
// Reset track info
curTrack = new MkvTrack();
if (line.StartsWith("| + A track"))
{
state = TrackListParseState.GET_TRACK_NUM;
}
break;
}
case TrackListParseState.GET_TRACK_NUM:
{
Match match = Regex.Match(line,
@"^\| \+ Track number: \d+ \(track ID for mkvmerge & mkvextract: (?<TrackNum>\d+)\)");
if (match.Success)
{
curTrack.TrackID = match.Groups["TrackNum"].ToString().Trim();
state = TrackListParseState.GET_TRACK_TYPE;
}
break;
}
case TrackListParseState.GET_TRACK_TYPE:
{
Match match = Regex.Match(line, @"^\| \+ Track type: (?<TrackType>\w+)");
if (match.Success)
{
string trackType = match.Groups["TrackType"].ToString().Trim();
if (trackType == "subtitles")
{
curTrack.TrackType = TrackType.SUBTITLES;
state = TrackListParseState.GET_CODEC_ID;
}
else if (trackType == "audio")
{
curTrack.TrackType = TrackType.AUDIO;
state = TrackListParseState.GET_CODEC_ID;
}
else
{
state = TrackListParseState.GET_NEXT_TRACK;
}
}
break;
}
case TrackListParseState.GET_CODEC_ID:
{
Match match = Regex.Match(line, @"^\| \+ Codec ID: (?<CodecID>.+)");
if (match.Success)
{
string codecID = match.Groups["CodecID"].ToString().Trim();
curTrack.Extension = codecID;
// See http://matroska.org/technical/specs/codecid/index.html
// Try subtitle Codec IDs first
if (codecID == "S_VOBSUB")
{
curTrack.Extension = "sub";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "S_TEXT/UTF8")
{
curTrack.Extension = "srt";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "S_TEXT/ASS")
{
curTrack.Extension = "ass";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "S_TEXT/SSA")
{
curTrack.Extension = "ssa";
state = TrackListParseState.GET_LANG;
}
//
// Now try audio Codec IDs
//
else if (codecID == "A_MPEG/L3")
{
curTrack.Extension = "mp3";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_MPEG/L2")
{
curTrack.Extension = "mp2";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_MPEG/L1")
{
curTrack.Extension = "mp1";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_PCM"))
{
curTrack.Extension = "wav";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_MPC")
{
curTrack.Extension = "mpc";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_AC3"))
{
curTrack.Extension = "ac3";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_ALAC"))
{
curTrack.Extension = "m4a";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_DTS"))
{
curTrack.Extension = "dts";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_VORBIS")
{
curTrack.Extension = "ogg";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_FLAC")
{
curTrack.Extension = "flac";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_REAL"))
{
curTrack.Extension = "rm";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_AAC"))
{
curTrack.Extension = "aac";
state = TrackListParseState.GET_LANG;
}
else if (codecID.StartsWith("A_QUICKTIME"))
{
curTrack.Extension = "aiff";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_TTA1")
{
curTrack.Extension = "tta";
state = TrackListParseState.GET_LANG;
}
else if (codecID == "A_WAVPACK4")
{
curTrack.Extension = "wv";
state = TrackListParseState.GET_LANG;
}
else
{
state = TrackListParseState.GET_NEXT_TRACK;
}
}
break;
}
// Note: Lang is optional
case TrackListParseState.GET_LANG:
{
Match match = Regex.Match(line, @"^\| \+ Language: (?<Lang>\w+)");
if (match.Success)
{
curTrack.Lang = match.Groups["Lang"].ToString().Trim();
// All required info for this track was found, add it to the list
trackList.Add(curTrack);
state = TrackListParseState.GET_NEXT_TRACK;
}
else
{
if (line.StartsWith("| + A track"))
{
// Lang is missing, add what we have
trackList.Add(curTrack);
state = TrackListParseState.GET_TRACK_NUM;
// Reset track info
curTrack = new MkvTrack();
}
else if (line.StartsWith("|+")) // Are we past the track section?
{
// Lang is missing, add what we have
trackList.Add(curTrack);
goto lbl_end_parse;
}
}
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
lbl_end_parse:
return(trackList);
}
