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using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.IO;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using System.Collections.Generic;
using System.Globalization;
using System.Threading.Tasks;
namespace MediaBrowser.MediaEncoding.Encoder
{
public class AudioEncoder
{
private readonly string _ffmpegPath;
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
private readonly IApplicationPaths _appPaths;
private readonly IIsoManager _isoManager;
private readonly ILiveTvManager _liveTvManager;
private readonly CultureInfo _usCulture = new CultureInfo("en-US");
public AudioEncoder(string ffmpegPath, ILogger logger, IFileSystem fileSystem, IApplicationPaths appPaths, IIsoManager isoManager, ILiveTvManager liveTvManager)
{
_ffmpegPath = ffmpegPath;
_logger = logger;
_fileSystem = fileSystem;
_appPaths = appPaths;
_isoManager = isoManager;
_liveTvManager = liveTvManager;
}
public Task BeginEncoding(InternalEncodingTask task)
{
return new FFMpegProcess(_ffmpegPath, _logger, _fileSystem, _appPaths, _isoManager, _liveTvManager).Start(task, GetArguments);
}
private string GetArguments(InternalEncodingTask task, string mountedPath)
{
var options = task.Request;
return string.Format("{0} -i {1} {2} -id3v2_version 3 -write_id3v1 1 \"{3}\"",
GetInputModifier(task),
GetInputArgument(task),
GetOutputModifier(task),
options.OutputPath).Trim();
}
private string GetInputModifier(InternalEncodingTask task)
{
return EncodingUtils.GetInputModifier(task);
}
private string GetInputArgument(InternalEncodingTask task)
{
return EncodingUtils.GetInputArgument(new List<string> { task.MediaPath }, task.IsInputRemote);
}
private string GetOutputModifier(InternalEncodingTask task)
{
var options = task.Request;
var audioTranscodeParams = new List<string>
{
"-threads " + EncodingUtils.GetNumberOfThreads(task, false).ToString(_usCulture),
"-vn"
};
var bitrate = EncodingUtils.GetAudioBitrateParam(task);
if (bitrate.HasValue)
{
audioTranscodeParams.Add("-ab " + bitrate.Value.ToString(_usCulture));
}
var channels = EncodingUtils.GetNumAudioChannelsParam(options, task.AudioStream);
if (channels.HasValue)
{
audioTranscodeParams.Add("-ac " + channels.Value);
}
if (options.AudioSampleRate.HasValue)
{
audioTranscodeParams.Add("-ar " + options.AudioSampleRate.Value);
}
return string.Join(" ", audioTranscodeParams.ToArray());
}
}
}
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