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/* AudioHelper.cs $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
namespace HandBrake.ApplicationServices.Parsing
{
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
/// <summary>
/// An Audio Helper Class
/// </summary>
public class AudioHelper
{
/// <summary>
/// Gets A Dummy Not Found Track
/// </summary>
public static Audio NoneFound
{
get
{
return new Audio { Description = "None Found" };
}
}
/// <summary>
/// Parse the CLI input to an Audio Track object
/// </summary>
/// <param name="output">
/// The output.
/// </param>
/// <returns>
/// An Audio Track obkect
/// </returns>
public static Audio Parse(StringReader output)
{
string audioTrack = output.ReadLine();
Match m = Regex.Match(audioTrack, @"^ \+ ([0-9]*), ([A-Za-z0-9,\s]*) \((.*)\) \((.*)\)");
Match track = Regex.Match(audioTrack, @"^ \+ ([0-9]*), ([A-Za-z0-9,\s]*) \((.*)\)"); // ID and Language
Match iso639_2 = Regex.Match(audioTrack, @"iso639-2: ([a-zA-Z]*)\)");
Match samplerate = Regex.Match(audioTrack, @"([0-9]*)Hz");
Match bitrate = Regex.Match(audioTrack, @"([0-9]*)bps");
string subformat = m.Groups[4].Value.Trim().Contains("iso639") ? null : m.Groups[4].Value;
string samplerateVal = samplerate.Success ? samplerate.Groups[0].Value.Replace("Hz", string.Empty).Trim() : "0";
string bitrateVal = bitrate.Success ? bitrate.Groups[0].Value.Replace("bps", string.Empty).Trim() : "0";
if (track.Success)
{
Audio thisTrack = new Audio
{
TrackNumber = int.Parse(track.Groups[1].Value.Trim()),
Language = track.Groups[2].Value,
Format = m.Groups[3].Value,
Description = subformat,
SampleRate = int.Parse(samplerateVal),
Bitrate = int.Parse(bitrateVal),
LanguageCode = iso639_2.Value.Replace("iso639-2: ", string.Empty).Replace(")", string.Empty)
};
return thisTrack;
}
return null;
}
/// <summary>
/// Pase a list of audio tracks
/// </summary>
/// <param name="output">
/// The output.
/// </param>
/// <returns>
/// An array of audio tracks
/// </returns>
public static Audio[] ParseList(StringReader output)
{
var tracks = new List<Audio>();
while (true)
{
Audio thisTrack = Parse(output);
if (thisTrack != null)
tracks.Add(thisTrack);
else
break;
}
return tracks.ToArray();
}
}
}
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