1056 lines
37 KiB
C#
1056 lines
37 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Common.MediaInfo;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.MediaEncoder
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{
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/// <summary>
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/// Class MediaEncoder
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/// </summary>
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public class MediaEncoder : IMediaEncoder, IDisposable
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{
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/// <summary>
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/// The _logger
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/// </summary>
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private readonly ILogger _logger;
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/// <summary>
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/// The _app paths
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/// </summary>
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private readonly IApplicationPaths _appPaths;
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/// <summary>
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/// Gets the json serializer.
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/// </summary>
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/// <value>The json serializer.</value>
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private readonly IJsonSerializer _jsonSerializer;
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/// <summary>
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/// The video image resource pool
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/// </summary>
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private readonly SemaphoreSlim _videoImageResourcePool = new SemaphoreSlim(1, 1);
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/// <summary>
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/// The audio image resource pool
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/// </summary>
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private readonly SemaphoreSlim _audioImageResourcePool = new SemaphoreSlim(2, 2);
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/// <summary>
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/// The FF probe resource pool
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/// </summary>
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private readonly SemaphoreSlim _ffProbeResourcePool = new SemaphoreSlim(2, 2);
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private readonly IFileSystem _fileSystem;
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public string FFMpegPath { get; private set; }
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public string FFProbePath { get; private set; }
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public string Version { get; private set; }
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public MediaEncoder(ILogger logger, IApplicationPaths appPaths,
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IJsonSerializer jsonSerializer, string ffMpegPath, string ffProbePath, string version, IFileSystem fileSystem)
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{
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_logger = logger;
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_appPaths = appPaths;
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_jsonSerializer = jsonSerializer;
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Version = version;
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_fileSystem = fileSystem;
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FFProbePath = ffProbePath;
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FFMpegPath = ffMpegPath;
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}
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/// <summary>
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/// Gets the encoder path.
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/// </summary>
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/// <value>The encoder path.</value>
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public string EncoderPath
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{
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get { return FFMpegPath; }
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}
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/// <summary>
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/// The _semaphoreLocks
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/// </summary>
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private readonly ConcurrentDictionary<string, SemaphoreSlim> _semaphoreLocks = new ConcurrentDictionary<string, SemaphoreSlim>();
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/// <summary>
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/// Gets the lock.
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/// </summary>
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/// <param name="filename">The filename.</param>
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/// <returns>System.Object.</returns>
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private SemaphoreSlim GetLock(string filename)
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{
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return _semaphoreLocks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
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}
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/// <summary>
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/// Gets the media info.
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/// </summary>
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/// <param name="inputFiles">The input files.</param>
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/// <param name="type">The type.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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public Task<MediaInfoResult> GetMediaInfo(string[] inputFiles, InputType type,
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CancellationToken cancellationToken)
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{
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return GetMediaInfoInternal(GetInputArgument(inputFiles, type), type != InputType.AudioFile,
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GetProbeSizeArgument(type), cancellationToken);
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}
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/// <summary>
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/// Gets the input argument.
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/// </summary>
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/// <param name="inputFiles">The input files.</param>
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/// <param name="type">The type.</param>
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/// <returns>System.String.</returns>
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/// <exception cref="System.ArgumentException">Unrecognized InputType</exception>
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public string GetInputArgument(string[] inputFiles, InputType type)
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{
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string inputPath;
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switch (type)
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{
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case InputType.Dvd:
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case InputType.VideoFile:
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case InputType.AudioFile:
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inputPath = GetConcatInputArgument(inputFiles);
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break;
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case InputType.Bluray:
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inputPath = GetBlurayInputArgument(inputFiles[0]);
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break;
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case InputType.Url:
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inputPath = GetHttpInputArgument(inputFiles);
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break;
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default:
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throw new ArgumentException("Unrecognized InputType");
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}
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return inputPath;
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}
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/// <summary>
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/// Gets the HTTP input argument.
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/// </summary>
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/// <param name="inputFiles">The input files.</param>
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/// <returns>System.String.</returns>
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private string GetHttpInputArgument(string[] inputFiles)
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{
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var url = inputFiles[0];
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return string.Format("\"{0}\"", url);
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}
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/// <summary>
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/// Gets the probe size argument.
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/// </summary>
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/// <param name="type">The type.</param>
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/// <returns>System.String.</returns>
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public string GetProbeSizeArgument(InputType type)
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{
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return type == InputType.Dvd ? "-probesize 1G -analyzeduration 200M" : string.Empty;
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}
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/// <summary>
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/// Gets the media info internal.
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/// </summary>
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/// <param name="inputPath">The input path.</param>
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/// <param name="extractChapters">if set to <c>true</c> [extract chapters].</param>
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/// <param name="probeSizeArgument">The probe size argument.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task{MediaInfoResult}.</returns>
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/// <exception cref="System.ApplicationException"></exception>
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private async Task<MediaInfoResult> GetMediaInfoInternal(string inputPath, bool extractChapters,
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string probeSizeArgument,
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CancellationToken cancellationToken)
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{
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var process = new Process
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{
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StartInfo = new ProcessStartInfo
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{
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CreateNoWindow = true,
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UseShellExecute = false,
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// Must consume both or ffmpeg may hang due to deadlocks. See comments below.
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RedirectStandardOutput = true,
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RedirectStandardError = true,
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FileName = FFProbePath,
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Arguments =
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string.Format(
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"{0} -i {1} -threads 0 -v info -print_format json -show_streams -show_format",
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probeSizeArgument, inputPath).Trim(),
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WindowStyle = ProcessWindowStyle.Hidden,
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ErrorDialog = false
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},
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EnableRaisingEvents = true
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};
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_logger.Debug("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
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process.Exited += ProcessExited;
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await _ffProbeResourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
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MediaInfoResult result;
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string standardError = null;
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try
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{
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process.Start();
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}
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catch (Exception ex)
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{
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_ffProbeResourcePool.Release();
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_logger.ErrorException("Error starting ffprobe", ex);
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throw;
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}
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try
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{
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Task<string> standardErrorReadTask = null;
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// MUST read both stdout and stderr asynchronously or a deadlock may occurr
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if (extractChapters)
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{
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standardErrorReadTask = process.StandardError.ReadToEndAsync();
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}
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else
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{
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process.BeginErrorReadLine();
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}
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result = _jsonSerializer.DeserializeFromStream<MediaInfoResult>(process.StandardOutput.BaseStream);
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if (extractChapters)
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{
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standardError = await standardErrorReadTask.ConfigureAwait(false);
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}
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}
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catch
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{
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// Hate having to do this
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try
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{
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process.Kill();
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}
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catch (InvalidOperationException ex1)
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{
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_logger.ErrorException("Error killing ffprobe", ex1);
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}
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catch (Win32Exception ex1)
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{
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_logger.ErrorException("Error killing ffprobe", ex1);
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}
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throw;
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}
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finally
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{
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_ffProbeResourcePool.Release();
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}
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if (result == null)
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{
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throw new ApplicationException(string.Format("FFProbe failed for {0}", inputPath));
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}
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cancellationToken.ThrowIfCancellationRequested();
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if (result.streams != null)
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{
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// Normalize aspect ratio if invalid
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foreach (var stream in result.streams)
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{
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if (string.Equals(stream.display_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase))
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{
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stream.display_aspect_ratio = string.Empty;
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}
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if (string.Equals(stream.sample_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase))
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{
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stream.sample_aspect_ratio = string.Empty;
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}
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}
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}
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if (extractChapters && !string.IsNullOrEmpty(standardError))
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{
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AddChapters(result, standardError);
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}
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return result;
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}
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/// <summary>
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/// The us culture
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/// </summary>
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protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
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/// <summary>
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/// Adds the chapters.
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/// </summary>
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/// <param name="result">The result.</param>
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/// <param name="standardError">The standard error.</param>
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private void AddChapters(MediaInfoResult result, string standardError)
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{
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var lines = standardError.Split('\n').Select(l => l.TrimStart());
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var chapters = new List<ChapterInfo>();
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ChapterInfo lastChapter = null;
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foreach (var line in lines)
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{
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if (line.StartsWith("Chapter", StringComparison.OrdinalIgnoreCase))
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{
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// Example:
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// Chapter #0.2: start 400.534, end 4565.435
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const string srch = "start ";
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var start = line.IndexOf(srch, StringComparison.OrdinalIgnoreCase);
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if (start == -1)
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{
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continue;
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}
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var subString = line.Substring(start + srch.Length);
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subString = subString.Substring(0, subString.IndexOf(','));
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double seconds;
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if (double.TryParse(subString, NumberStyles.Any, UsCulture, out seconds))
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{
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lastChapter = new ChapterInfo
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{
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StartPositionTicks = TimeSpan.FromSeconds(seconds).Ticks
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};
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chapters.Add(lastChapter);
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}
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}
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else if (line.StartsWith("title", StringComparison.OrdinalIgnoreCase))
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{
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if (lastChapter != null && string.IsNullOrEmpty(lastChapter.Name))
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{
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var index = line.IndexOf(':');
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if (index != -1)
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{
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lastChapter.Name = line.Substring(index + 1).Trim().TrimEnd('\r');
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}
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}
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}
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}
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result.Chapters = chapters;
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}
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/// <summary>
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/// Processes the exited.
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/// </summary>
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/// <param name="sender">The sender.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void ProcessExited(object sender, EventArgs e)
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{
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((Process)sender).Dispose();
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}
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/// <summary>
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/// Converts the text subtitle to ass.
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/// </summary>
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/// <param name="inputPath">The input path.</param>
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/// <param name="outputPath">The output path.</param>
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/// <param name="language">The language.</param>
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/// <param name="offset">The offset.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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public async Task ConvertTextSubtitleToAss(string inputPath, string outputPath, string language, TimeSpan offset,
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CancellationToken cancellationToken)
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{
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var semaphore = GetLock(outputPath);
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await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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try
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{
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if (!File.Exists(outputPath))
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{
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await ConvertTextSubtitleToAssInternal(inputPath, outputPath, language, offset).ConfigureAwait(false);
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}
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}
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finally
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{
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semaphore.Release();
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}
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}
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private const int FastSeekOffsetSeconds = 1;
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/// <summary>
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/// Converts the text subtitle to ass.
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/// </summary>
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/// <param name="inputPath">The input path.</param>
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/// <param name="outputPath">The output path.</param>
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/// <param name="language">The language.</param>
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/// <param name="offset">The offset.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">inputPath
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/// or
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/// outputPath</exception>
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/// <exception cref="System.ApplicationException"></exception>
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private async Task ConvertTextSubtitleToAssInternal(string inputPath, string outputPath, string language, TimeSpan offset)
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{
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if (string.IsNullOrEmpty(inputPath))
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{
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throw new ArgumentNullException("inputPath");
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}
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if (string.IsNullOrEmpty(outputPath))
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{
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throw new ArgumentNullException("outputPath");
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}
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var slowSeekParam = GetSlowSeekCommandLineParameter(offset);
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var fastSeekParam = GetFastSeekCommandLineParameter(offset);
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var encodingParam = string.IsNullOrEmpty(language) ? string.Empty :
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GetSubtitleLanguageEncodingParam(language) + " ";
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var process = new Process
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{
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StartInfo = new ProcessStartInfo
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{
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RedirectStandardOutput = false,
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RedirectStandardError = true,
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CreateNoWindow = true,
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UseShellExecute = false,
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FileName = FFMpegPath,
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Arguments =
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string.Format("{0}{1}-i \"{2}\"{3} \"{4}\"",
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fastSeekParam,
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encodingParam,
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inputPath,
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slowSeekParam,
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outputPath),
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WindowStyle = ProcessWindowStyle.Hidden,
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ErrorDialog = false
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}
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};
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_logger.Debug("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
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var logFilePath = Path.Combine(_appPaths.LogDirectoryPath, "ffmpeg-sub-convert-" + Guid.NewGuid() + ".txt");
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var logFileStream = _fileSystem.GetFileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, true);
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try
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{
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process.Start();
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}
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catch (Exception ex)
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{
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logFileStream.Dispose();
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_logger.ErrorException("Error starting ffmpeg", ex);
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throw;
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}
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var logTask = process.StandardError.BaseStream.CopyToAsync(logFileStream);
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var ranToCompletion = process.WaitForExit(60000);
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if (!ranToCompletion)
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{
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try
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{
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_logger.Info("Killing ffmpeg subtitle conversion process");
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process.Kill();
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process.WaitForExit(1000);
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await logTask.ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error killing subtitle conversion process", ex);
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}
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finally
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{
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logFileStream.Dispose();
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}
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}
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var exitCode = ranToCompletion ? process.ExitCode : -1;
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process.Dispose();
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var failed = false;
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if (exitCode == -1)
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{
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failed = true;
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if (File.Exists(outputPath))
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{
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try
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{
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_logger.Info("Deleting converted subtitle due to failure: ", outputPath);
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File.Delete(outputPath);
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}
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catch (IOException ex)
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{
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_logger.ErrorException("Error deleting converted subtitle {0}", ex, outputPath);
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}
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}
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}
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else if (!File.Exists(outputPath))
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{
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failed = true;
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}
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|
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if (failed)
|
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{
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var msg = string.Format("ffmpeg subtitle converted failed for {0}", inputPath);
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_logger.Error(msg);
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throw new ApplicationException(msg);
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}
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await SetAssFont(outputPath).ConfigureAwait(false);
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}
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|
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protected string GetFastSeekCommandLineParameter(TimeSpan offset)
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{
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var seconds = offset.TotalSeconds - FastSeekOffsetSeconds;
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if (seconds > 0)
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{
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return string.Format("-ss {0} ", seconds.ToString(UsCulture));
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}
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return string.Empty;
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}
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|
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protected string GetSlowSeekCommandLineParameter(TimeSpan offset)
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{
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if (offset.TotalSeconds - FastSeekOffsetSeconds > 0)
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{
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return string.Format(" -ss {0}", FastSeekOffsetSeconds.ToString(UsCulture));
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}
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return string.Empty;
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}
|
|
|
|
/// <summary>
|
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/// Gets the subtitle language encoding param.
|
|
/// </summary>
|
|
/// <param name="language">The language.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetSubtitleLanguageEncodingParam(string language)
|
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{
|
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switch (language.ToLower())
|
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{
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case "pol":
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case "cze":
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case "ces":
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case "slo":
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case "slk":
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case "hun":
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case "slv":
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case "srp":
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case "hrv":
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case "rum":
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case "ron":
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case "rup":
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case "alb":
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case "sqi":
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return "-sub_charenc windows-1250";
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case "ara":
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return "-sub_charenc windows-1256";
|
|
case "heb":
|
|
return "-sub_charenc windows-1255";
|
|
case "grc":
|
|
case "gre":
|
|
return "-sub_charenc windows-1253";
|
|
case "crh":
|
|
case "ota":
|
|
case "tur":
|
|
return "-sub_charenc windows-1254";
|
|
case "rus":
|
|
return "-sub_charenc windows-1251";
|
|
case "vie":
|
|
return "-sub_charenc windows-1258";
|
|
case "kor":
|
|
return "-sub_charenc cp949";
|
|
default:
|
|
return "-sub_charenc windows-1252";
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Extracts the text subtitle.
|
|
/// </summary>
|
|
/// <param name="inputFiles">The input files.</param>
|
|
/// <param name="type">The type.</param>
|
|
/// <param name="subtitleStreamIndex">Index of the subtitle stream.</param>
|
|
/// <param name="offset">The offset.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task.</returns>
|
|
/// <exception cref="System.ArgumentException">Must use inputPath list overload</exception>
|
|
public async Task ExtractTextSubtitle(string[] inputFiles, InputType type, int subtitleStreamIndex, TimeSpan offset, string outputPath, CancellationToken cancellationToken)
|
|
{
|
|
var semaphore = GetLock(outputPath);
|
|
|
|
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
|
|
|
|
try
|
|
{
|
|
if (!File.Exists(outputPath))
|
|
{
|
|
await ExtractTextSubtitleInternal(GetInputArgument(inputFiles, type), subtitleStreamIndex, offset, outputPath, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
semaphore.Release();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Extracts the text subtitle.
|
|
/// </summary>
|
|
/// <param name="inputPath">The input path.</param>
|
|
/// <param name="subtitleStreamIndex">Index of the subtitle stream.</param>
|
|
/// <param name="offset">The offset.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task.</returns>
|
|
/// <exception cref="System.ArgumentNullException">inputPath
|
|
/// or
|
|
/// outputPath
|
|
/// or
|
|
/// cancellationToken</exception>
|
|
/// <exception cref="System.ApplicationException"></exception>
|
|
private async Task ExtractTextSubtitleInternal(string inputPath, int subtitleStreamIndex, TimeSpan offset, string outputPath, CancellationToken cancellationToken)
|
|
{
|
|
if (string.IsNullOrEmpty(inputPath))
|
|
{
|
|
throw new ArgumentNullException("inputPath");
|
|
}
|
|
|
|
if (string.IsNullOrEmpty(outputPath))
|
|
{
|
|
throw new ArgumentNullException("outputPath");
|
|
}
|
|
|
|
var slowSeekParam = offset.TotalSeconds > 0 ? " -ss " + offset.TotalSeconds.ToString(UsCulture) : string.Empty;
|
|
|
|
var process = new Process
|
|
{
|
|
StartInfo = new ProcessStartInfo
|
|
{
|
|
CreateNoWindow = true,
|
|
UseShellExecute = false,
|
|
|
|
RedirectStandardOutput = false,
|
|
RedirectStandardError = true,
|
|
|
|
FileName = FFMpegPath,
|
|
Arguments = string.Format("-i {0}{1} -map 0:{2} -an -vn -c:s ass \"{3}\"", inputPath, slowSeekParam, subtitleStreamIndex, outputPath),
|
|
WindowStyle = ProcessWindowStyle.Hidden,
|
|
ErrorDialog = false
|
|
}
|
|
};
|
|
|
|
_logger.Debug("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
|
|
|
|
var logFilePath = Path.Combine(_appPaths.LogDirectoryPath, "ffmpeg-sub-extract-" + Guid.NewGuid() + ".txt");
|
|
|
|
var logFileStream = _fileSystem.GetFileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, true);
|
|
|
|
try
|
|
{
|
|
process.Start();
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
logFileStream.Dispose();
|
|
|
|
_logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
throw;
|
|
}
|
|
|
|
process.StandardError.BaseStream.CopyToAsync(logFileStream);
|
|
|
|
var ranToCompletion = process.WaitForExit(60000);
|
|
|
|
if (!ranToCompletion)
|
|
{
|
|
try
|
|
{
|
|
_logger.Info("Killing ffmpeg subtitle extraction process");
|
|
|
|
process.Kill();
|
|
|
|
process.WaitForExit(1000);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.ErrorException("Error killing subtitle extraction process", ex);
|
|
}
|
|
finally
|
|
{
|
|
logFileStream.Dispose();
|
|
}
|
|
}
|
|
|
|
var exitCode = ranToCompletion ? process.ExitCode : -1;
|
|
|
|
process.Dispose();
|
|
|
|
var failed = false;
|
|
|
|
if (exitCode == -1)
|
|
{
|
|
failed = true;
|
|
|
|
if (File.Exists(outputPath))
|
|
{
|
|
try
|
|
{
|
|
_logger.Info("Deleting extracted subtitle due to failure: ", outputPath);
|
|
File.Delete(outputPath);
|
|
}
|
|
catch (IOException ex)
|
|
{
|
|
_logger.ErrorException("Error deleting extracted subtitle {0}", ex, outputPath);
|
|
}
|
|
}
|
|
}
|
|
else if (!File.Exists(outputPath))
|
|
{
|
|
failed = true;
|
|
}
|
|
|
|
if (failed)
|
|
{
|
|
var msg = string.Format("ffmpeg subtitle extraction failed for {0} to {1}", inputPath, outputPath);
|
|
|
|
_logger.Error(msg);
|
|
|
|
throw new ApplicationException(msg);
|
|
}
|
|
else
|
|
{
|
|
var msg = string.Format("ffmpeg subtitle extraction completed for {0} to {1}", inputPath, outputPath);
|
|
|
|
_logger.Info(msg);
|
|
}
|
|
|
|
await SetAssFont(outputPath).ConfigureAwait(false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Sets the ass font.
|
|
/// </summary>
|
|
/// <param name="file">The file.</param>
|
|
/// <returns>Task.</returns>
|
|
private async Task SetAssFont(string file)
|
|
{
|
|
_logger.Info("Setting ass font within {0}", file);
|
|
|
|
string text;
|
|
Encoding encoding;
|
|
|
|
using (var reader = new StreamReader(file, detectEncodingFromByteOrderMarks: true))
|
|
{
|
|
encoding = reader.CurrentEncoding;
|
|
|
|
text = await reader.ReadToEndAsync().ConfigureAwait(false);
|
|
}
|
|
|
|
var newText = text.Replace(",Arial,", ",Arial Unicode MS,");
|
|
|
|
if (!string.Equals(text, newText))
|
|
{
|
|
using (var writer = new StreamWriter(file, false, encoding))
|
|
{
|
|
writer.Write(newText);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Extracts the image.
|
|
/// </summary>
|
|
/// <param name="inputFiles">The input files.</param>
|
|
/// <param name="type">The type.</param>
|
|
/// <param name="threedFormat">The threed format.</param>
|
|
/// <param name="offset">The offset.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task.</returns>
|
|
/// <exception cref="System.ArgumentException">Must use inputPath list overload</exception>
|
|
public async Task ExtractImage(string[] inputFiles, InputType type, Video3DFormat? threedFormat, TimeSpan? offset, string outputPath, CancellationToken cancellationToken)
|
|
{
|
|
var resourcePool = type == InputType.AudioFile ? _audioImageResourcePool : _videoImageResourcePool;
|
|
|
|
var inputArgument = GetInputArgument(inputFiles, type);
|
|
|
|
if (type != InputType.AudioFile)
|
|
{
|
|
try
|
|
{
|
|
await ExtractImageInternal(inputArgument, type, threedFormat, offset, outputPath, true, resourcePool, cancellationToken).ConfigureAwait(false);
|
|
return;
|
|
}
|
|
catch
|
|
{
|
|
_logger.Error("I-frame image extraction failed, will attempt standard way. Input: {0}", inputArgument);
|
|
}
|
|
}
|
|
|
|
await ExtractImageInternal(inputArgument, type, threedFormat, offset, outputPath, false, resourcePool, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Extracts the image.
|
|
/// </summary>
|
|
/// <param name="inputPath">The input path.</param>
|
|
/// <param name="type">The type.</param>
|
|
/// <param name="threedFormat">The threed format.</param>
|
|
/// <param name="offset">The offset.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="useIFrame">if set to <c>true</c> [use I frame].</param>
|
|
/// <param name="resourcePool">The resource pool.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task.</returns>
|
|
/// <exception cref="System.ArgumentNullException">inputPath
|
|
/// or
|
|
/// outputPath</exception>
|
|
/// <exception cref="System.ApplicationException"></exception>
|
|
private async Task ExtractImageInternal(string inputPath, InputType type, Video3DFormat? threedFormat, TimeSpan? offset, string outputPath, bool useIFrame, SemaphoreSlim resourcePool, CancellationToken cancellationToken)
|
|
{
|
|
if (string.IsNullOrEmpty(inputPath))
|
|
{
|
|
throw new ArgumentNullException("inputPath");
|
|
}
|
|
|
|
if (string.IsNullOrEmpty(outputPath))
|
|
{
|
|
throw new ArgumentNullException("outputPath");
|
|
}
|
|
|
|
var vf = "scale=iw*sar:ih, scale=600:-1";
|
|
|
|
if (threedFormat.HasValue)
|
|
{
|
|
switch (threedFormat.Value)
|
|
{
|
|
case Video3DFormat.HalfSideBySide:
|
|
case Video3DFormat.FullSideBySide:
|
|
vf = "crop=iw/2:ih:0:0,scale=(iw*2):ih,scale=600:-1";
|
|
break;
|
|
case Video3DFormat.HalfTopAndBottom:
|
|
case Video3DFormat.FullTopAndBottom:
|
|
vf = "crop=iw:ih/2:0:0,scale=iw:(ih*2),scale=600:-1";
|
|
break;
|
|
}
|
|
}
|
|
|
|
var args = useIFrame ? string.Format("-i {0} -threads 0 -v quiet -vframes 1 -filter:v select=\"eq(pict_type\\,I)\" -vf \"{2}\" -f image2 \"{1}\"", inputPath, outputPath, vf) :
|
|
string.Format("-i {0} -threads 0 -v quiet -vframes 1 -vf \"{2}\" -f image2 \"{1}\"", inputPath, outputPath, vf);
|
|
|
|
var probeSize = GetProbeSizeArgument(type);
|
|
|
|
if (!string.IsNullOrEmpty(probeSize))
|
|
{
|
|
args = probeSize + " " + args;
|
|
}
|
|
|
|
if (offset.HasValue)
|
|
{
|
|
args = string.Format("-ss {0} ", Convert.ToInt32(offset.Value.TotalSeconds)).ToString(UsCulture) + args;
|
|
}
|
|
|
|
var process = new Process
|
|
{
|
|
StartInfo = new ProcessStartInfo
|
|
{
|
|
CreateNoWindow = true,
|
|
UseShellExecute = false,
|
|
FileName = FFMpegPath,
|
|
Arguments = args,
|
|
WindowStyle = ProcessWindowStyle.Hidden,
|
|
ErrorDialog = false
|
|
}
|
|
};
|
|
|
|
await resourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
|
|
|
|
var ranToCompletion = StartAndWaitForProcess(process);
|
|
|
|
resourcePool.Release();
|
|
|
|
var exitCode = ranToCompletion ? process.ExitCode : -1;
|
|
|
|
process.Dispose();
|
|
|
|
var failed = false;
|
|
|
|
if (exitCode == -1)
|
|
{
|
|
failed = true;
|
|
|
|
if (File.Exists(outputPath))
|
|
{
|
|
try
|
|
{
|
|
_logger.Info("Deleting extracted image due to failure: ", outputPath);
|
|
File.Delete(outputPath);
|
|
}
|
|
catch (IOException ex)
|
|
{
|
|
_logger.ErrorException("Error deleting extracted image {0}", ex, outputPath);
|
|
}
|
|
}
|
|
}
|
|
else if (!File.Exists(outputPath))
|
|
{
|
|
failed = true;
|
|
}
|
|
|
|
if (failed)
|
|
{
|
|
var msg = string.Format("ffmpeg image extraction failed for {0}", inputPath);
|
|
|
|
_logger.Error(msg);
|
|
|
|
throw new ApplicationException(msg);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Starts the and wait for process.
|
|
/// </summary>
|
|
/// <param name="process">The process.</param>
|
|
/// <param name="timeout">The timeout.</param>
|
|
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
|
|
private bool StartAndWaitForProcess(Process process, int timeout = 10000)
|
|
{
|
|
process.Start();
|
|
|
|
var ranToCompletion = process.WaitForExit(timeout);
|
|
|
|
if (!ranToCompletion)
|
|
{
|
|
try
|
|
{
|
|
_logger.Info("Killing ffmpeg process");
|
|
|
|
process.Kill();
|
|
|
|
process.WaitForExit(1000);
|
|
}
|
|
catch (Win32Exception ex)
|
|
{
|
|
_logger.ErrorException("Error killing process", ex);
|
|
}
|
|
catch (InvalidOperationException ex)
|
|
{
|
|
_logger.ErrorException("Error killing process", ex);
|
|
}
|
|
catch (NotSupportedException ex)
|
|
{
|
|
_logger.ErrorException("Error killing process", ex);
|
|
}
|
|
}
|
|
|
|
return ranToCompletion;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the file input argument.
|
|
/// </summary>
|
|
/// <param name="path">The path.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetFileInputArgument(string path)
|
|
{
|
|
return string.Format("file:\"{0}\"", path);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the concat input argument.
|
|
/// </summary>
|
|
/// <param name="playableStreamFiles">The playable stream files.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetConcatInputArgument(string[] playableStreamFiles)
|
|
{
|
|
// Get all streams
|
|
// If there's more than one we'll need to use the concat command
|
|
if (playableStreamFiles.Length > 1)
|
|
{
|
|
var files = string.Join("|", playableStreamFiles);
|
|
|
|
return string.Format("concat:\"{0}\"", files);
|
|
}
|
|
|
|
// Determine the input path for video files
|
|
return GetFileInputArgument(playableStreamFiles[0]);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the bluray input argument.
|
|
/// </summary>
|
|
/// <param name="blurayRoot">The bluray root.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetBlurayInputArgument(string blurayRoot)
|
|
{
|
|
return string.Format("bluray:\"{0}\"", blurayRoot);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
|
|
/// </summary>
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Releases unmanaged and - optionally - managed resources.
|
|
/// </summary>
|
|
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
|
|
protected virtual void Dispose(bool dispose)
|
|
{
|
|
if (dispose)
|
|
{
|
|
_videoImageResourcePool.Dispose();
|
|
}
|
|
}
|
|
}
|
|
}
|