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Diffstat (limited to 'MediaBrowser.MediaEncoding/Encoder/ImageEncoder.cs')
-rw-r--r--MediaBrowser.MediaEncoding/Encoder/ImageEncoder.cs235
1 files changed, 0 insertions, 235 deletions
diff --git a/MediaBrowser.MediaEncoding/Encoder/ImageEncoder.cs b/MediaBrowser.MediaEncoding/Encoder/ImageEncoder.cs
deleted file mode 100644
index e0ca86c41..000000000
--- a/MediaBrowser.MediaEncoding/Encoder/ImageEncoder.cs
+++ /dev/null
@@ -1,235 +0,0 @@
-using MediaBrowser.Common.Configuration;
-using MediaBrowser.Common.IO;
-using MediaBrowser.Controller.MediaEncoding;
-using MediaBrowser.Model.Logging;
-using System;
-using System.Diagnostics;
-using System.Globalization;
-using System.IO;
-using System.Linq;
-using System.Text;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace MediaBrowser.MediaEncoding.Encoder
-{
- public class ImageEncoder
- {
- private readonly string _ffmpegPath;
- private readonly ILogger _logger;
- private readonly IFileSystem _fileSystem;
- private readonly IApplicationPaths _appPaths;
-
- private readonly CultureInfo _usCulture = new CultureInfo("en-US");
-
- private static readonly SemaphoreSlim ResourcePool = new SemaphoreSlim(10, 10);
-
- public ImageEncoder(string ffmpegPath, ILogger logger, IFileSystem fileSystem, IApplicationPaths appPaths)
- {
- _ffmpegPath = ffmpegPath;
- _logger = logger;
- _fileSystem = fileSystem;
- _appPaths = appPaths;
- }
-
- public async Task<Stream> EncodeImage(ImageEncodingOptions options, CancellationToken cancellationToken)
- {
- ValidateInput(options);
-
- await ResourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
-
- try
- {
- return await EncodeImageInternal(options, cancellationToken).ConfigureAwait(false);
- }
- finally
- {
- ResourcePool.Release();
- }
- }
-
- private async Task<Stream> EncodeImageInternal(ImageEncodingOptions options, CancellationToken cancellationToken)
- {
- ValidateInput(options);
-
- var inputPath = options.InputPath;
- var filename = Path.GetFileName(inputPath);
-
- if (HasDiacritics(filename))
- {
- inputPath = GetTempFile(inputPath);
- filename = Path.GetFileName(inputPath);
- }
-
- var process = new Process
- {
- StartInfo = new ProcessStartInfo
- {
- CreateNoWindow = true,
- UseShellExecute = false,
- FileName = _ffmpegPath,
- Arguments = GetArguments(options, filename),
- WindowStyle = ProcessWindowStyle.Hidden,
- ErrorDialog = false,
- RedirectStandardOutput = true,
- RedirectStandardError = true,
- WorkingDirectory = Path.GetDirectoryName(inputPath)
- }
- };
-
- _logger.Debug("ffmpeg " + process.StartInfo.Arguments);
-
- process.Start();
-
- var memoryStream = new MemoryStream();
-
-#pragma warning disable 4014
- // Important - don't await the log task or we won't be able to kill ffmpeg when the user stops playback
- process.StandardOutput.BaseStream.CopyToAsync(memoryStream);
-#pragma warning restore 4014
-
- // MUST read both stdout and stderr asynchronously or a deadlock may occurr
- process.BeginErrorReadLine();
-
- var ranToCompletion = process.WaitForExit(5000);
-
- if (!ranToCompletion)
- {
- try
- {
- _logger.Info("Killing ffmpeg process");
-
- process.Kill();
-
- process.WaitForExit(1000);
- }
- catch (Exception ex)
- {
- _logger.ErrorException("Error killing process", ex);
- }
- }
-
- var exitCode = ranToCompletion ? process.ExitCode : -1;
-
- process.Dispose();
-
- if (exitCode == -1 || memoryStream.Length == 0)
- {
- memoryStream.Dispose();
-
- var msg = string.Format("ffmpeg image encoding failed for {0}", options.InputPath);
-
- _logger.Error(msg);
-
- throw new ApplicationException(msg);
- }
-
- memoryStream.Position = 0;
- return memoryStream;
- }
-
- private string GetTempFile(string path)
- {
- var extension = Path.GetExtension(path) ?? string.Empty;
-
- var tempPath = Path.Combine(_appPaths.TempDirectory, Guid.NewGuid().ToString("N") + extension);
-
- File.Copy(path, tempPath);
-
- return tempPath;
- }
-
- private string GetArguments(ImageEncodingOptions options, string inputFilename)
- {
- var vfScale = GetFilterGraph(options);
- var outputFormat = GetOutputFormat(options.Format);
-
- var quality = (options.Quality ?? 100) * .3;
- quality = 31 - quality;
- var qualityValue = Convert.ToInt32(Math.Max(quality, 1));
-
- return string.Format("-f image2 -i file:\"{3}\" -q:v {0} {1} -f image2pipe -vcodec {2} -",
- qualityValue.ToString(_usCulture),
- vfScale,
- outputFormat,
- inputFilename);
- }
-
- private string GetFilterGraph(ImageEncodingOptions options)
- {
- if (!options.Width.HasValue &&
- !options.Height.HasValue &&
- !options.MaxHeight.HasValue &&
- !options.MaxWidth.HasValue)
- {
- return string.Empty;
- }
-
- var widthScale = "-1";
- var heightScale = "-1";
-
- if (options.MaxWidth.HasValue)
- {
- widthScale = "min(iw\\," + options.MaxWidth.Value.ToString(_usCulture) + ")";
- }
- else if (options.Width.HasValue)
- {
- widthScale = options.Width.Value.ToString(_usCulture);
- }
-
- if (options.MaxHeight.HasValue)
- {
- heightScale = "min(ih\\," + options.MaxHeight.Value.ToString(_usCulture) + ")";
- }
- else if (options.Height.HasValue)
- {
- heightScale = options.Height.Value.ToString(_usCulture);
- }
-
- var scaleMethod = "lanczos";
-
- return string.Format("-vf scale=\"{0}:{1}\"",
- widthScale,
- heightScale);
- }
-
- private string GetOutputFormat(string format)
- {
- if (string.Equals(format, "jpeg", StringComparison.OrdinalIgnoreCase) ||
- string.Equals(format, "jpg", StringComparison.OrdinalIgnoreCase))
- {
- return "mjpeg";
- }
- return format;
- }
-
- private void ValidateInput(ImageEncodingOptions options)
- {
-
- }
-
- /// <summary>
- /// Determines whether the specified text has diacritics.
- /// </summary>
- /// <param name="text">The text.</param>
- /// <returns><c>true</c> if the specified text has diacritics; otherwise, <c>false</c>.</returns>
- private bool HasDiacritics(string text)
- {
- return !String.Equals(text, RemoveDiacritics(text), StringComparison.Ordinal);
- }
-
- /// <summary>
- /// Removes the diacritics.
- /// </summary>
- /// <param name="text">The text.</param>
- /// <returns>System.String.</returns>
- private string RemoveDiacritics(string text)
- {
- return String.Concat(
- text.Normalize(NormalizationForm.FormD)
- .Where(ch => CharUnicodeInfo.GetUnicodeCategory(ch) !=
- UnicodeCategory.NonSpacingMark)
- ).Normalize(NormalizationForm.FormC);
- }
- }
-}