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using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using System;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
namespace MediaBrowser.ServerApplication.Implementations
{
public class FFMpegDownloader
{
private readonly IZipClient _zipClient;
private readonly IHttpClient _httpClient;
private readonly IApplicationPaths _appPaths;
private readonly ILogger _logger;
public FFMpegDownloader(ILogger logger, IApplicationPaths appPaths, IHttpClient httpClient, IZipClient zipClient)
{
_logger = logger;
_appPaths = appPaths;
_httpClient = httpClient;
_zipClient = zipClient;
}
public async Task<FFMpegInfo> GetFFMpegInfo()
{
var version = "ffmpeg20130904";
var versionedDirectoryPath = Path.Combine(GetMediaToolsPath(true), version);
var info = new FFMpegInfo
{
ProbePath = Path.Combine(versionedDirectoryPath, "ffprobe.exe"),
Path = Path.Combine(versionedDirectoryPath, "ffmpeg.exe"),
Version = version
};
if (!Directory.Exists(versionedDirectoryPath))
{
Directory.CreateDirectory(versionedDirectoryPath);
}
if (!File.Exists(info.ProbePath) || !File.Exists(info.Path))
{
ExtractTools(version, versionedDirectoryPath);
}
try
{
await DownloadFonts(versionedDirectoryPath).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error getting ffmpeg font files", ex);
}
return info;
}
/// <summary>
/// Extracts the tools.
/// </summary>
/// <param name="assembly">The assembly.</param>
/// <param name="zipFileResourcePath">The zip file resource path.</param>
/// <param name="targetPath">The target path.</param>
private void ExtractTools(string version, string targetPath)
{
var zipFileResourcePath = GetType().Namespace + "." + version + ".zip";
using (var resourceStream = GetType().Assembly.GetManifestResourceStream(zipFileResourcePath))
{
_zipClient.ExtractAll(resourceStream, targetPath, false);
}
}
private const string FontUrl = "https://www.dropbox.com/s/9nb76tybcsw5xrk/ARIALUNI.zip?dl=1";
/// <summary>
/// Extracts the fonts.
/// </summary>
/// <param name="targetPath">The target path.</param>
private async Task DownloadFonts(string targetPath)
{
var fontsDirectory = Path.Combine(targetPath, "fonts");
if (!Directory.Exists(fontsDirectory))
{
Directory.CreateDirectory(fontsDirectory);
}
const string fontFilename = "ARIALUNI.TTF";
var fontFile = Path.Combine(fontsDirectory, fontFilename);
if (!File.Exists(fontFile))
{
await DownloadFontFile(fontsDirectory, fontFilename).ConfigureAwait(false);
}
await WriteFontConfigFile(fontsDirectory).ConfigureAwait(false);
}
/// <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)
{
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);
}
}
var tempFile = await _httpClient.GetTempFile(new HttpRequestOptions
{
Url = FontUrl,
Progress = new Progress<double>()
});
_zipClient.ExtractAll(tempFile, fontsDirectory, true);
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 = new FileStream(fontConfigFile, FileMode.Create, FileAccess.Write,
FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize,
FileOptions.Asynchronous))
{
await fileStream.WriteAsync(bytes, 0, bytes.Length);
}
}
}
/// <summary>
/// Gets the media tools path.
/// </summary>
/// <param name="create">if set to <c>true</c> [create].</param>
/// <returns>System.String.</returns>
private string GetMediaToolsPath(bool create)
{
var path = Path.Combine(_appPaths.ProgramDataPath, "ffmpeg");
if (create && !Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
return path;
}
}
public class FFMpegInfo
{
public string Path { get; set; }
public string ProbePath { get; set; }
public string Version { get; set; }
}
}
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