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using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Net;
using MediaBrowser.Model.IO;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
namespace Emby.Server.Implementations.FFMpeg
{
public class FFMpegLoader
{
private readonly IHttpClient _httpClient;
private readonly IApplicationPaths _appPaths;
private readonly ILogger _logger;
private readonly IZipClient _zipClient;
private readonly IFileSystem _fileSystem;
private readonly FFMpegInstallInfo _ffmpegInstallInfo;
public FFMpegLoader(ILogger logger, IApplicationPaths appPaths, IHttpClient httpClient, IZipClient zipClient, IFileSystem fileSystem, FFMpegInstallInfo ffmpegInstallInfo)
{
_logger = logger;
_appPaths = appPaths;
_httpClient = httpClient;
_zipClient = zipClient;
_fileSystem = fileSystem;
_ffmpegInstallInfo = ffmpegInstallInfo;
}
public FFMpegInfo GetFFMpegInfo(StartupOptions options)
{
var customffMpegPath = options.GetOption("-ffmpeg");
var customffProbePath = options.GetOption("-ffprobe");
if (!string.IsNullOrWhiteSpace(customffMpegPath) && !string.IsNullOrWhiteSpace(customffProbePath))
{
return new FFMpegInfo
{
ProbePath = customffProbePath,
EncoderPath = customffMpegPath,
Version = "external"
};
}
var downloadInfo = _ffmpegInstallInfo;
var prebuiltFolder = _appPaths.ProgramSystemPath;
var prebuiltffmpeg = Path.Combine(prebuiltFolder, downloadInfo.FFMpegFilename);
var prebuiltffprobe = Path.Combine(prebuiltFolder, downloadInfo.FFProbeFilename);
if (_fileSystem.FileExists(prebuiltffmpeg) && _fileSystem.FileExists(prebuiltffprobe))
{
return new FFMpegInfo
{
ProbePath = prebuiltffprobe,
EncoderPath = prebuiltffmpeg,
Version = "external"
};
}
var version = downloadInfo.Version;
if (string.Equals(version, "0", StringComparison.OrdinalIgnoreCase))
{
return new FFMpegInfo();
}
var rootEncoderPath = Path.Combine(_appPaths.ProgramDataPath, "ffmpeg");
var versionedDirectoryPath = Path.Combine(rootEncoderPath, version);
var info = new FFMpegInfo
{
ProbePath = Path.Combine(versionedDirectoryPath, downloadInfo.FFProbeFilename),
EncoderPath = Path.Combine(versionedDirectoryPath, downloadInfo.FFMpegFilename),
Version = version
};
_fileSystem.CreateDirectory(versionedDirectoryPath);
var excludeFromDeletions = new List<string> { versionedDirectoryPath };
if (!_fileSystem.FileExists(info.ProbePath) || !_fileSystem.FileExists(info.EncoderPath))
{
// ffmpeg not present. See if there's an older version we can start with
var existingVersion = GetExistingVersion(info, rootEncoderPath);
// No older version. Need to download and block until complete
if (existingVersion == null)
{
return new FFMpegInfo();
}
else
{
info = existingVersion;
versionedDirectoryPath = _fileSystem.GetDirectoryName(info.EncoderPath);
excludeFromDeletions.Add(versionedDirectoryPath);
}
}
// Allow just one of these to be overridden, if desired.
if (!string.IsNullOrWhiteSpace(customffMpegPath))
{
info.EncoderPath = customffMpegPath;
}
if (!string.IsNullOrWhiteSpace(customffProbePath))
{
info.ProbePath = customffProbePath;
}
return info;
}
private FFMpegInfo GetExistingVersion(FFMpegInfo info, string rootEncoderPath)
{
var encoderFilename = Path.GetFileName(info.EncoderPath);
var probeFilename = Path.GetFileName(info.ProbePath);
foreach (var directory in _fileSystem.GetDirectoryPaths(rootEncoderPath)
.ToList())
{
var allFiles = _fileSystem.GetFilePaths(directory, true).ToList();
var encoder = allFiles.FirstOrDefault(i => string.Equals(Path.GetFileName(i), encoderFilename, StringComparison.OrdinalIgnoreCase));
var probe = allFiles.FirstOrDefault(i => string.Equals(Path.GetFileName(i), probeFilename, StringComparison.OrdinalIgnoreCase));
if (!string.IsNullOrWhiteSpace(encoder) &&
!string.IsNullOrWhiteSpace(probe))
{
return new FFMpegInfo
{
EncoderPath = encoder,
ProbePath = probe,
Version = Path.GetFileName(_fileSystem.GetDirectoryName(probe))
};
}
}
return null;
}
}
}
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