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using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Model.Logging;
using System;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Text;
using MediaBrowser.Common.IO;
using System.Collections.Generic;
using CommonIO;
namespace MediaBrowser.Server.Startup.Common.FFMpeg
{
public class FFmpegValidator
{
private readonly ILogger _logger;
private readonly IApplicationPaths _appPaths;
private readonly IFileSystem _fileSystem;
public FFmpegValidator(ILogger logger, IApplicationPaths appPaths, IFileSystem fileSystem)
{
_logger = logger;
_appPaths = appPaths;
_fileSystem = fileSystem;
}
public Tuple<List<string>,List<string>> Validate(FFMpegInfo info)
{
_logger.Info("FFMpeg: {0}", info.EncoderPath);
_logger.Info("FFProbe: {0}", info.ProbePath);
var decoders = GetDecoders(info.EncoderPath);
var encoders = GetEncoders(info.EncoderPath);
return new Tuple<List<string>, List<string>>(decoders, encoders);
}
private List<string> GetDecoders(string ffmpegPath)
{
string output = string.Empty;
try
{
output = GetFFMpegOutput(ffmpegPath, "-decoders");
}
catch
{
}
var found = new List<string>();
var required = new[]
{
"h264_qsv",
"mpeg2_qsv",
"vc1_qsv"
};
foreach (var codec in required)
{
var srch = " " + codec + " ";
if (output.IndexOf(srch, StringComparison.OrdinalIgnoreCase) == -1)
{
_logger.Warn("ffmpeg is missing decoder " + codec);
}
else
{
found.Add(codec);
}
}
return found;
}
private List<string> GetEncoders(string ffmpegPath)
{
string output = null;
try
{
output = GetFFMpegOutput(ffmpegPath, "-encoders");
}
catch
{
}
var found = new List<string>();
var required = new[]
{
"libx264",
"libx265",
"mpeg4",
"msmpeg4",
"libvpx",
//"libvpx-vp9",
"aac",
"ac3",
"libmp3lame",
"libvorbis",
"srt"
};
foreach (var codec in required)
{
var srch = " " + codec + " ";
if (output.IndexOf(srch, StringComparison.OrdinalIgnoreCase) == -1)
{
_logger.Warn("ffmpeg is missing encoder " + codec);
}
else
{
found.Add(codec);
}
}
return found;
}
private string GetFFMpegOutput(string path, string arguments)
{
var process = new Process
{
StartInfo = new ProcessStartInfo
{
CreateNoWindow = true,
UseShellExecute = false,
FileName = path,
Arguments = arguments,
WindowStyle = ProcessWindowStyle.Hidden,
ErrorDialog = false,
RedirectStandardOutput = true,
RedirectStandardError = true
}
};
using (process)
{
process.Start();
try
{
process.BeginErrorReadLine();
using (var reader = new StreamReader(process.StandardOutput.BaseStream))
{
return reader.ReadToEnd();
}
}
catch
{
// Hate having to do this
try
{
process.Kill();
}
catch (Exception ex1)
{
_logger.ErrorException("Error killing ffmpeg", ex1);
}
throw;
}
}
}
}
}
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