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jellyfin/MediaBrowser.ServerApplication/FFMpeg/FFMpegDownloader.cs

363 lines
13 KiB

using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Common.Progress;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Net;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
#if __MonoCS__
using Mono.Unix.Native;
#endif
namespace MediaBrowser.ServerApplication.FFMpeg
{
public class FFMpegDownloader
{
private readonly IHttpClient _httpClient;
private readonly IApplicationPaths _appPaths;
private readonly ILogger _logger;
private readonly IZipClient _zipClient;
private readonly IFileSystem _fileSystem;
private readonly string[] _fontUrls = new[]
{
"https://www.dropbox.com/s/pj847twf7riq0j7/ARIALUNI.7z?dl=1"
};
public FFMpegDownloader(ILogger logger, IApplicationPaths appPaths, IHttpClient httpClient, IZipClient zipClient, IFileSystem fileSystem)
{
_logger = logger;
_appPaths = appPaths;
_httpClient = httpClient;
_zipClient = zipClient;
_fileSystem = fileSystem;
}
public async Task<FFMpegInfo> GetFFMpegInfo(IProgress<double> progress)
{
var rootEncoderPath = Path.Combine(_appPaths.ProgramDataPath, "ffmpeg");
var versionedDirectoryPath = Path.Combine(rootEncoderPath, FFMpegDownloadInfo.Version);
var info = new FFMpegInfo
{
ProbePath = Path.Combine(versionedDirectoryPath, FFMpegDownloadInfo.FFProbeFilename),
EncoderPath = Path.Combine(versionedDirectoryPath, FFMpegDownloadInfo.FFMpegFilename),
Version = FFMpegDownloadInfo.Version
};
Directory.CreateDirectory(versionedDirectoryPath);
if (!File.Exists(info.ProbePath) || !File.Exists(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)
{
await DownloadFFMpeg(versionedDirectoryPath, progress).ConfigureAwait(false);
}
else
{
// Older version found.
// Start with that. Download new version in the background.
var newPath = versionedDirectoryPath;
Task.Run(() => DownloadFFMpegInBackground(newPath));
info = existingVersion;
versionedDirectoryPath = Path.GetDirectoryName(info.EncoderPath);
}
}
await DownloadFonts(versionedDirectoryPath).ConfigureAwait(false);
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 Directory.EnumerateDirectories(rootEncoderPath, "*", SearchOption.TopDirectoryOnly)
.ToList())
{
var allFiles = Directory.EnumerateFiles(directory, "*", SearchOption.AllDirectories).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.GetFileNameWithoutExtension(Path.GetDirectoryName(probe))
};
}
}
return null;
}
private async void DownloadFFMpegInBackground(string directory)
{
try
{
await DownloadFFMpeg(directory, new Progress<double>()).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error downloading ffmpeg", ex);
}
}
private async Task DownloadFFMpeg(string directory, IProgress<double> progress)
{
foreach (var url in FFMpegDownloadInfo.FfMpegUrls)
{
progress.Report(0);
try
{
var tempFile = await _httpClient.GetTempFile(new HttpRequestOptions
{
Url = url,
CancellationToken = CancellationToken.None,
Progress = progress
}).ConfigureAwait(false);
ExtractFFMpeg(tempFile, directory);
return;
}
catch (HttpException ex)
{
_logger.ErrorException("Error downloading {0}", ex, url);
}
catch (Exception ex)
{
_logger.ErrorException("Error unpacking {0}", ex, url);
}
}
throw new ApplicationException("Unable to download required components. Please try again later.");
}
private void ExtractFFMpeg(string tempFile, string targetFolder)
{
_logger.Info("Extracting ffmpeg from {0}", tempFile);
var tempFolder = Path.Combine(_appPaths.TempDirectory, Guid.NewGuid().ToString());
Directory.CreateDirectory(tempFolder);
try
{
ExtractArchive(tempFile, tempFolder);
var files = Directory.EnumerateFiles(tempFolder, "*", SearchOption.AllDirectories).ToList();
foreach (var file in files.Where(i =>
{
var filename = Path.GetFileName(i);
return
string.Equals(filename, FFMpegDownloadInfo.FFProbeFilename, StringComparison.OrdinalIgnoreCase) ||
string.Equals(filename, FFMpegDownloadInfo.FFMpegFilename, StringComparison.OrdinalIgnoreCase);
}))
{
File.Copy(file, Path.Combine(targetFolder, Path.GetFileName(file)), true);
#if __MonoCS__
//Linux: File permission to 666, and user's execute bit
if (Environment.OSVersion.Platform == PlatformID.Unix || Environment.OSVersion.Platform == PlatformID.MacOSX)
{
Syscall.chmod(Path.Combine(targetFolder, Path.GetFileName(file)), FilePermissions.DEFFILEMODE | FilePermissions.S_IXUSR);
}
#endif
}
}
finally
{
DeleteFile(tempFile);
}
}
private void ExtractArchive(string archivePath, string targetPath)
{
_logger.Info("Extracting {0} to {1}", archivePath, targetPath);
if (string.Equals(FFMpegDownloadInfo.ArchiveType, "7z", StringComparison.OrdinalIgnoreCase))
{
_zipClient.ExtractAllFrom7z(archivePath, targetPath, true);
}
else if (string.Equals(FFMpegDownloadInfo.ArchiveType, "gz", StringComparison.OrdinalIgnoreCase))
{
_zipClient.ExtractAllFromTar(archivePath, targetPath, true);
}
}
private void Extract7zArchive(string archivePath, string targetPath)
{
_logger.Info("Extracting {0} to {1}", archivePath, targetPath);
_zipClient.ExtractAllFrom7z(archivePath, targetPath, true);
}
private void DeleteFile(string path)
{
try
{
File.Delete(path);
}
catch (IOException ex)
{
_logger.ErrorException("Error deleting temp file {0}", ex, path);
}
}
/// <summary>
/// Extracts the fonts.
/// </summary>
/// <param name="targetPath">The target path.</param>
/// <returns>Task.</returns>
private async Task DownloadFonts(string targetPath)
{
try
{
var fontsDirectory = Path.Combine(targetPath, "fonts");
Directory.CreateDirectory(fontsDirectory);
const string fontFilename = "ARIALUNI.TTF";
var fontFile = Path.Combine(fontsDirectory, fontFilename);
if (File.Exists(fontFile))
{
await WriteFontConfigFile(fontsDirectory).ConfigureAwait(false);
}
else
{
// Kick this off, but no need to wait on it
Task.Run(async () =>
{
await DownloadFontFile(fontsDirectory, fontFilename, new Progress<double>()).ConfigureAwait(false);
await WriteFontConfigFile(fontsDirectory).ConfigureAwait(false);
});
}
}
catch (HttpException ex)
{
// Don't let the server crash because of this
_logger.ErrorException("Error downloading ffmpeg font files", ex);
}
catch (Exception ex)
{
// Don't let the server crash because of this
_logger.ErrorException("Error writing ffmpeg font files", ex);
}
}
/// <summary>
/// Downloads the font file.
/// </summary>
/// <param name="fontsDirectory">The fonts directory.</param>
/// <param name="fontFilename">The font filename.</param>
/// <returns>Task.</returns>
private async Task DownloadFontFile(string fontsDirectory, string fontFilename, IProgress<double> progress)
{
var existingFile = Directory
.EnumerateFiles(_appPaths.ProgramDataPath, fontFilename, SearchOption.AllDirectories)
.FirstOrDefault();
if (existingFile != null)
{
try
{
File.Copy(existingFile, Path.Combine(fontsDirectory, fontFilename), true);
return;
}
catch (IOException ex)
{
// Log this, but don't let it fail the operation
_logger.ErrorException("Error copying file", ex);
}
}
string tempFile = null;
foreach (var url in _fontUrls)
{
progress.Report(0);
try
{
tempFile = await _httpClient.GetTempFile(new HttpRequestOptions
{
Url = url,
Progress = progress
}).ConfigureAwait(false);
break;
}
catch (Exception ex)
{
// The core can function without the font file, so handle this
_logger.ErrorException("Failed to download ffmpeg font file from {0}", ex, url);
}
}
if (string.IsNullOrEmpty(tempFile))
{
return;
}
Extract7zArchive(tempFile, fontsDirectory);
try
{
File.Delete(tempFile);
}
catch (IOException ex)
{
// Log this, but don't let it fail the operation
_logger.ErrorException("Error deleting temp file {0}", ex, tempFile);
}
}
/// <summary>
/// Writes the font config file.
/// </summary>
/// <param name="fontsDirectory">The fonts directory.</param>
/// <returns>Task.</returns>
private async Task WriteFontConfigFile(string fontsDirectory)
{
const string fontConfigFilename = "fonts.conf";
var fontConfigFile = Path.Combine(fontsDirectory, fontConfigFilename);
if (!File.Exists(fontConfigFile))
{
var contents = string.Format("<?xml version=\"1.0\"?><fontconfig><dir>{0}</dir><alias><family>Arial</family><prefer>Arial Unicode MS</prefer></alias></fontconfig>", fontsDirectory);
var bytes = Encoding.UTF8.GetBytes(contents);
using (var fileStream = _fileSystem.GetFileStream(fontConfigFile, FileMode.Create, FileAccess.Write,
FileShare.Read, true))
{
await fileStream.WriteAsync(bytes, 0, bytes.Length);
}
}
}
}
}