jellyfin/MediaBrowser.Server.Implementations/MediaEncoder/MediaEncoder.cs
Luke Pulverenti c543fdea3a Merge branch 'master' of https://github.com/tikuf/MediaBrowser
Conflicts:
	MediaBrowser.Api/Playback/Hls/VideoHlsService.cs
	MediaBrowser.Api/Playback/Progressive/VideoService.cs
2013-11-01 11:59:42 -04:00

1057 lines
37 KiB
C#

using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.IO;
using MediaBrowser.Common.MediaInfo;
using MediaBrowser.Controller.IO;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.MediaEncoder
{
/// <summary>
/// Class MediaEncoder
/// </summary>
public class MediaEncoder : IMediaEncoder, IDisposable
{
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
/// <summary>
/// The _app paths
/// </summary>
private readonly IApplicationPaths _appPaths;
/// <summary>
/// Gets the json serializer.
/// </summary>
/// <value>The json serializer.</value>
private readonly IJsonSerializer _jsonSerializer;
/// <summary>
/// The video image resource pool
/// </summary>
private readonly SemaphoreSlim _videoImageResourcePool = new SemaphoreSlim(1, 1);
/// <summary>
/// The audio image resource pool
/// </summary>
private readonly SemaphoreSlim _audioImageResourcePool = new SemaphoreSlim(1, 1);
/// <summary>
/// The FF probe resource pool
/// </summary>
private readonly SemaphoreSlim _ffProbeResourcePool = new SemaphoreSlim(1, 1);
private readonly IFileSystem _fileSystem;
public string FFMpegPath { get; private set; }
public string FFProbePath { get; private set; }
public string Version { get; private set; }
public MediaEncoder(ILogger logger, IApplicationPaths appPaths,
IJsonSerializer jsonSerializer, string ffMpegPath, string ffProbePath, string version, IFileSystem fileSystem)
{
_logger = logger;
_appPaths = appPaths;
_jsonSerializer = jsonSerializer;
Version = version;
_fileSystem = fileSystem;
FFProbePath = ffProbePath;
FFMpegPath = ffMpegPath;
}
/// <summary>
/// Gets the encoder path.
/// </summary>
/// <value>The encoder path.</value>
public string EncoderPath
{
get { return FFMpegPath; }
}
/// <summary>
/// The _semaphoreLocks
/// </summary>
private readonly ConcurrentDictionary<string, SemaphoreSlim> _semaphoreLocks = new ConcurrentDictionary<string, SemaphoreSlim>();
/// <summary>
/// Gets the lock.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns>System.Object.</returns>
private SemaphoreSlim GetLock(string filename)
{
return _semaphoreLocks.GetOrAdd(filename, key => new SemaphoreSlim(1, 1));
}
/// <summary>
/// Gets the media info.
/// </summary>
/// <param name="inputFiles">The input files.</param>
/// <param name="type">The type.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task<MediaInfoResult> GetMediaInfo(string[] inputFiles, InputType type,
CancellationToken cancellationToken)
{
return GetMediaInfoInternal(GetInputArgument(inputFiles, type), type != InputType.AudioFile,
GetProbeSizeArgument(type), cancellationToken);
}
/// <summary>
/// Gets the input argument.
/// </summary>
/// <param name="inputFiles">The input files.</param>
/// <param name="type">The type.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.ArgumentException">Unrecognized InputType</exception>
public string GetInputArgument(string[] inputFiles, InputType type)
{
string inputPath;
switch (type)
{
case InputType.Dvd:
case InputType.VideoFile:
case InputType.AudioFile:
inputPath = GetConcatInputArgument(inputFiles);
break;
case InputType.Bluray:
inputPath = GetBlurayInputArgument(inputFiles[0]);
break;
case InputType.Url:
inputPath = GetHttpInputArgument(inputFiles);
break;
default:
throw new ArgumentException("Unrecognized InputType");
}
return inputPath;
}
/// <summary>
/// Gets the HTTP input argument.
/// </summary>
/// <param name="inputFiles">The input files.</param>
/// <returns>System.String.</returns>
private string GetHttpInputArgument(string[] inputFiles)
{
var url = inputFiles[0];
return string.Format("\"{0}\"", url);
}
/// <summary>
/// Gets the probe size argument.
/// </summary>
/// <param name="type">The type.</param>
/// <returns>System.String.</returns>
public string GetProbeSizeArgument(InputType type)
{
return type == InputType.Dvd ? "-probesize 1G -analyzeduration 200M" : string.Empty;
}
/// <summary>
/// Gets the media info internal.
/// </summary>
/// <param name="inputPath">The input path.</param>
/// <param name="extractChapters">if set to <c>true</c> [extract chapters].</param>
/// <param name="probeSizeArgument">The probe size argument.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{MediaInfoResult}.</returns>
/// <exception cref="System.ApplicationException"></exception>
private async Task<MediaInfoResult> GetMediaInfoInternal(string inputPath, bool extractChapters,
string probeSizeArgument,
CancellationToken cancellationToken)
{
var process = new Process
{
StartInfo = new ProcessStartInfo
{
CreateNoWindow = true,
UseShellExecute = false,
// Must consume both or ffmpeg may hang due to deadlocks. See comments below.
RedirectStandardOutput = true,
RedirectStandardError = true,
FileName = FFProbePath,
Arguments =
string.Format(
"{0} -i {1} -threads 0 -v info -print_format json -show_streams -show_format",
probeSizeArgument, inputPath).Trim(),
WindowStyle = ProcessWindowStyle.Hidden,
ErrorDialog = false
},
EnableRaisingEvents = true
};
_logger.Debug("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
process.Exited += ProcessExited;
await _ffProbeResourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
MediaInfoResult result;
string standardError = null;
try
{
process.Start();
}
catch (Exception ex)
{
_ffProbeResourcePool.Release();
_logger.ErrorException("Error starting ffprobe", ex);
throw;
}
try
{
Task<string> standardErrorReadTask = null;
// MUST read both stdout and stderr asynchronously or a deadlock may occurr
if (extractChapters)
{
standardErrorReadTask = process.StandardError.ReadToEndAsync();
}
else
{
process.BeginErrorReadLine();
}
result = _jsonSerializer.DeserializeFromStream<MediaInfoResult>(process.StandardOutput.BaseStream);
if (extractChapters)
{
standardError = await standardErrorReadTask.ConfigureAwait(false);
}
}
catch
{
// Hate having to do this
try
{
process.Kill();
}
catch (InvalidOperationException ex1)
{
_logger.ErrorException("Error killing ffprobe", ex1);
}
catch (Win32Exception ex1)
{
_logger.ErrorException("Error killing ffprobe", ex1);
}
throw;
}
finally
{
_ffProbeResourcePool.Release();
}
if (result == null)
{
throw new ApplicationException(string.Format("FFProbe failed for {0}", inputPath));
}
cancellationToken.ThrowIfCancellationRequested();
if (result.streams != null)
{
// Normalize aspect ratio if invalid
foreach (var stream in result.streams)
{
if (string.Equals(stream.display_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase))
{
stream.display_aspect_ratio = string.Empty;
}
if (string.Equals(stream.sample_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase))
{
stream.sample_aspect_ratio = string.Empty;
}
}
}
if (extractChapters && !string.IsNullOrEmpty(standardError))
{
AddChapters(result, standardError);
}
return result;
}
/// <summary>
/// The us culture
/// </summary>
protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
/// <summary>
/// Adds the chapters.
/// </summary>
/// <param name="result">The result.</param>
/// <param name="standardError">The standard error.</param>
private void AddChapters(MediaInfoResult result, string standardError)
{
var lines = standardError.Split('\n').Select(l => l.TrimStart());
var chapters = new List<ChapterInfo>();
ChapterInfo lastChapter = null;
foreach (var line in lines)
{
if (line.StartsWith("Chapter", StringComparison.OrdinalIgnoreCase))
{
// Example:
// Chapter #0.2: start 400.534, end 4565.435
const string srch = "start ";
var start = line.IndexOf(srch, StringComparison.OrdinalIgnoreCase);
if (start == -1)
{
continue;
}
var subString = line.Substring(start + srch.Length);
subString = subString.Substring(0, subString.IndexOf(','));
double seconds;
if (double.TryParse(subString, NumberStyles.Any, UsCulture, out seconds))
{
lastChapter = new ChapterInfo
{
StartPositionTicks = TimeSpan.FromSeconds(seconds).Ticks
};
chapters.Add(lastChapter);
}
}
else if (line.StartsWith("title", StringComparison.OrdinalIgnoreCase))
{
if (lastChapter != null && string.IsNullOrEmpty(lastChapter.Name))
{
var index = line.IndexOf(':');
if (index != -1)
{
lastChapter.Name = line.Substring(index + 1).Trim().TrimEnd('\r');
}
}
}
}
result.Chapters = chapters;
}
/// <summary>
/// Processes the exited.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
private void ProcessExited(object sender, EventArgs e)
{
((Process)sender).Dispose();
}
/// <summary>
/// Converts the text subtitle to ass.
/// </summary>
/// <param name="inputPath">The input path.</param>
/// <param name="outputPath">The output path.</param>
/// <param name="language">The language.</param>
/// <param name="offset">The offset.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public async Task ConvertTextSubtitleToAss(string inputPath, string outputPath, string language, TimeSpan offset,
CancellationToken cancellationToken)
{
var semaphore = GetLock(outputPath);
await semaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
if (!File.Exists(outputPath))
{
await ConvertTextSubtitleToAssInternal(inputPath, outputPath, language, offset).ConfigureAwait(false);
}
}
finally
{
semaphore.Release();
}
}
private const int FastSeekOffsetSeconds = 1;
/// <summary>
/// Converts the text subtitle to ass.
/// </summary>
/// <param name="inputPath">The input path.</param>
/// <param name="outputPath">The output path.</param>
/// <param name="language">The language.</param>
/// <param name="offset">The offset.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">inputPath
/// or
/// outputPath</exception>
/// <exception cref="System.ApplicationException"></exception>
private async Task ConvertTextSubtitleToAssInternal(string inputPath, string outputPath, string language, TimeSpan offset)
{
if (string.IsNullOrEmpty(inputPath))
{
throw new ArgumentNullException("inputPath");
}
if (string.IsNullOrEmpty(outputPath))
{
throw new ArgumentNullException("outputPath");
}
var slowSeekParam = GetSlowSeekCommandLineParameter(offset);
var fastSeekParam = GetFastSeekCommandLineParameter(offset);
var encodingParam = string.IsNullOrEmpty(language) ? string.Empty :
GetSubtitleLanguageEncodingParam(language) + " ";
var process = new Process
{
StartInfo = new ProcessStartInfo
{
RedirectStandardOutput = false,
RedirectStandardError = true,
CreateNoWindow = true,
UseShellExecute = false,
FileName = FFMpegPath,
Arguments =
string.Format("{0}{1}-i \"{2}\"{3} \"{4}\"",
fastSeekParam,
encodingParam,
inputPath,
slowSeekParam,
outputPath),
WindowStyle = ProcessWindowStyle.Hidden,
ErrorDialog = false
}
};
_logger.Debug("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
var logFilePath = Path.Combine(_appPaths.LogDirectoryPath, "ffmpeg-sub-convert-" + 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;
}
var logTask = process.StandardError.BaseStream.CopyToAsync(logFileStream);
var ranToCompletion = process.WaitForExit(60000);
if (!ranToCompletion)
{
try
{
_logger.Info("Killing ffmpeg subtitle conversion process");
process.Kill();
process.WaitForExit(1000);
await logTask.ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error killing subtitle conversion 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 converted subtitle due to failure: ", outputPath);
File.Delete(outputPath);
}
catch (IOException ex)
{
_logger.ErrorException("Error deleting converted subtitle {0}", ex, outputPath);
}
}
}
else if (!File.Exists(outputPath))
{
failed = true;
}
if (failed)
{
var msg = string.Format("ffmpeg subtitle converted failed for {0}", inputPath);
_logger.Error(msg);
throw new ApplicationException(msg);
}
await SetAssFont(outputPath).ConfigureAwait(false);
}
protected string GetFastSeekCommandLineParameter(TimeSpan offset)
{
var seconds = offset.TotalSeconds - FastSeekOffsetSeconds;
if (seconds > 0)
{
return string.Format("-ss {0} ", seconds.ToString(UsCulture));
}
return string.Empty;
}
protected string GetSlowSeekCommandLineParameter(TimeSpan offset)
{
if (offset.TotalSeconds - FastSeekOffsetSeconds > 0)
{
return string.Format(" -ss {0}", FastSeekOffsetSeconds.ToString(UsCulture));
}
return string.Empty;
}
/// <summary>
/// Gets the subtitle language encoding param.
/// </summary>
/// <param name="language">The language.</param>
/// <returns>System.String.</returns>
private string GetSubtitleLanguageEncodingParam(string language)
{
switch (language.ToLower())
{
case "pol":
case "cze":
case "ces":
case "slo":
case "slk":
case "hun":
case "slv":
case "srp":
case "hrv":
case "rum":
case "ron":
case "rup":
case "alb":
case "sqi":
return "-sub_charenc windows-1250";
case "ara":
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();
}
}
}
}