700 lines
25 KiB
C#
700 lines
25 KiB
C#
using MediaBrowser.Common.Extensions;
|
|
using MediaBrowser.Common.IO;
|
|
using MediaBrowser.Controller;
|
|
using MediaBrowser.Controller.Entities;
|
|
using MediaBrowser.Controller.Library;
|
|
using MediaBrowser.Model.Drawing;
|
|
using MediaBrowser.Model.Dto;
|
|
using MediaBrowser.Model.Entities;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.Diagnostics;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using MediaBrowser.Server.Implementations.HttpServer;
|
|
|
|
namespace MediaBrowser.Api.Playback
|
|
{
|
|
/// <summary>
|
|
/// Class BaseStreamingService
|
|
/// </summary>
|
|
public abstract class BaseStreamingService : BaseRestService
|
|
{
|
|
/// <summary>
|
|
/// Gets or sets the application paths.
|
|
/// </summary>
|
|
/// <value>The application paths.</value>
|
|
protected IServerApplicationPaths ApplicationPaths { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the user manager.
|
|
/// </summary>
|
|
/// <value>The user manager.</value>
|
|
protected IUserManager UserManager { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the library manager.
|
|
/// </summary>
|
|
/// <value>The library manager.</value>
|
|
protected ILibraryManager LibraryManager { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the iso manager.
|
|
/// </summary>
|
|
/// <value>The iso manager.</value>
|
|
protected IIsoManager IsoManager { get; set; }
|
|
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="BaseStreamingService" /> class.
|
|
/// </summary>
|
|
/// <param name="appPaths">The app paths.</param>
|
|
/// <param name="userManager">The user manager.</param>
|
|
/// <param name="libraryManager">The library manager.</param>
|
|
/// <param name="isoManager">The iso manager.</param>
|
|
protected BaseStreamingService(IServerApplicationPaths appPaths, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager)
|
|
{
|
|
ApplicationPaths = appPaths;
|
|
UserManager = userManager;
|
|
LibraryManager = libraryManager;
|
|
IsoManager = isoManager;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the command line arguments.
|
|
/// </summary>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected abstract string GetCommandLineArguments(string outputPath, StreamState state);
|
|
|
|
/// <summary>
|
|
/// Gets the type of the transcoding job.
|
|
/// </summary>
|
|
/// <value>The type of the transcoding job.</value>
|
|
protected abstract TranscodingJobType TranscodingJobType { get; }
|
|
|
|
/// <summary>
|
|
/// Gets the output file extension.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected virtual string GetOutputFileExtension(StreamState state)
|
|
{
|
|
return Path.GetExtension(state.Url);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the output file path.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetOutputFilePath(StreamState state)
|
|
{
|
|
var folder = ApplicationPaths.FFMpegStreamCachePath;
|
|
return Path.Combine(folder, GetCommandLineArguments("dummy\\dummy", state).GetMD5() + GetOutputFileExtension(state).ToLower());
|
|
}
|
|
|
|
/// <summary>
|
|
/// The fast seek offset seconds
|
|
/// </summary>
|
|
private const int FastSeekOffsetSeconds = 1;
|
|
|
|
/// <summary>
|
|
/// Gets the fast seek command line parameter.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
/// <value>The fast seek command line parameter.</value>
|
|
protected string GetFastSeekCommandLineParameter(StreamRequest request)
|
|
{
|
|
var time = request.StartTimeTicks;
|
|
|
|
if (time.HasValue)
|
|
{
|
|
var seconds = TimeSpan.FromTicks(time.Value).TotalSeconds - FastSeekOffsetSeconds;
|
|
|
|
if (seconds > 0)
|
|
{
|
|
return string.Format("-ss {0}", seconds);
|
|
}
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the slow seek command line parameter.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
/// <value>The slow seek command line parameter.</value>
|
|
protected string GetSlowSeekCommandLineParameter(StreamRequest request)
|
|
{
|
|
var time = request.StartTimeTicks;
|
|
|
|
if (time.HasValue)
|
|
{
|
|
if (TimeSpan.FromTicks(time.Value).TotalSeconds - FastSeekOffsetSeconds > 0)
|
|
{
|
|
return string.Format(" -ss {0}", FastSeekOffsetSeconds);
|
|
}
|
|
}
|
|
|
|
return string.Empty;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the map args.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected virtual string GetMapArgs(StreamState state)
|
|
{
|
|
var args = string.Empty;
|
|
|
|
if (state.VideoStream != null)
|
|
{
|
|
args += string.Format("-map 0:{0}", state.VideoStream.Index);
|
|
}
|
|
else
|
|
{
|
|
args += "-map -0:v";
|
|
}
|
|
|
|
if (state.AudioStream != null)
|
|
{
|
|
args += string.Format(" -map 0:{0}", state.AudioStream.Index);
|
|
}
|
|
else
|
|
{
|
|
args += " -map -0:a";
|
|
}
|
|
|
|
if (state.SubtitleStream == null)
|
|
{
|
|
args += " -map -0:s";
|
|
}
|
|
|
|
return args;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines which stream will be used for playback
|
|
/// </summary>
|
|
/// <param name="allStream">All stream.</param>
|
|
/// <param name="desiredIndex">Index of the desired.</param>
|
|
/// <param name="type">The type.</param>
|
|
/// <param name="returnFirstIfNoIndex">if set to <c>true</c> [return first if no index].</param>
|
|
/// <returns>MediaStream.</returns>
|
|
private MediaStream GetMediaStream(IEnumerable<MediaStream> allStream, int? desiredIndex, MediaStreamType type, bool returnFirstIfNoIndex = true)
|
|
{
|
|
var streams = allStream.Where(s => s.Type == type).ToList();
|
|
|
|
if (desiredIndex.HasValue)
|
|
{
|
|
var stream = streams.FirstOrDefault(s => s.Index == desiredIndex.Value);
|
|
|
|
if (stream != null)
|
|
{
|
|
return stream;
|
|
}
|
|
}
|
|
|
|
// Just return the first one
|
|
return returnFirstIfNoIndex ? streams.FirstOrDefault() : null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// If we're going to put a fixed size on the command line, this will calculate it
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputVideoCodec">The output video codec.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetOutputSizeParam(StreamState state, string outputVideoCodec)
|
|
{
|
|
// http://sonnati.wordpress.com/2012/10/19/ffmpeg-the-swiss-army-knife-of-internet-streaming-part-vi/
|
|
|
|
var assSubtitleParam = string.Empty;
|
|
|
|
var request = state.Request;
|
|
|
|
if (state.SubtitleStream != null)
|
|
{
|
|
if (state.SubtitleStream.Codec.IndexOf("srt", StringComparison.OrdinalIgnoreCase) != -1 || state.SubtitleStream.Codec.IndexOf("subrip", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
assSubtitleParam = GetTextSubtitleParam((Video)state.Item, state.SubtitleStream, request.StartTimeTicks);
|
|
}
|
|
}
|
|
|
|
// If fixed dimensions were supplied
|
|
if (request.Width.HasValue && request.Height.HasValue)
|
|
{
|
|
return string.Format(" -vf \"scale={0}:{1}{2}\"", request.Width.Value, request.Height.Value, assSubtitleParam);
|
|
}
|
|
|
|
var isH264Output = outputVideoCodec.Equals("libx264", StringComparison.OrdinalIgnoreCase);
|
|
|
|
// If a fixed width was requested
|
|
if (request.Width.HasValue)
|
|
{
|
|
return isH264Output ?
|
|
string.Format(" -vf \"scale={0}:trunc(ow/a/2)*2{1}\"", request.Width.Value, assSubtitleParam) :
|
|
string.Format(" -vf \"scale={0}:-1{1}\"", request.Width.Value, assSubtitleParam);
|
|
}
|
|
|
|
// If a max width was requested
|
|
if (request.MaxWidth.HasValue && !request.MaxHeight.HasValue)
|
|
{
|
|
return isH264Output ?
|
|
string.Format(" -vf \"scale=min(iw\\,{0}):trunc(ow/a/2)*2{1}\"", request.MaxWidth.Value, assSubtitleParam) :
|
|
string.Format(" -vf \"scale=min(iw\\,{0}):-1{1}\"", request.MaxWidth.Value, assSubtitleParam);
|
|
}
|
|
|
|
// Need to perform calculations manually
|
|
|
|
// Try to account for bad media info
|
|
var currentHeight = state.VideoStream.Height ?? request.MaxHeight ?? request.Height ?? 0;
|
|
var currentWidth = state.VideoStream.Width ?? request.MaxWidth ?? request.Width ?? 0;
|
|
|
|
var outputSize = DrawingUtils.Resize(currentWidth, currentHeight, request.Width, request.Height, request.MaxWidth, request.MaxHeight);
|
|
|
|
// If we're encoding with libx264, it can't handle odd numbered widths or heights, so we'll have to fix that
|
|
if (isH264Output)
|
|
{
|
|
return string.Format(" -vf \"scale=trunc({0}/2)*2:trunc({1}/2)*2{2}\"", outputSize.Width, outputSize.Height, assSubtitleParam);
|
|
}
|
|
|
|
// Otherwise use -vf scale since ffmpeg will ensure internally that the aspect ratio is preserved
|
|
return string.Format(" -vf \"scale={0}:-1{1}\"", Convert.ToInt32(outputSize.Width), assSubtitleParam);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the text subtitle param.
|
|
/// </summary>
|
|
/// <param name="video">The video.</param>
|
|
/// <param name="subtitleStream">The subtitle stream.</param>
|
|
/// <param name="startTimeTicks">The start time ticks.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetTextSubtitleParam(Video video, MediaStream subtitleStream, long? startTimeTicks)
|
|
{
|
|
var path = subtitleStream.IsExternal ? GetConvertedAssPath(video, subtitleStream) : GetExtractedAssPath(video, subtitleStream);
|
|
|
|
if (string.IsNullOrEmpty(path))
|
|
{
|
|
return string.Empty;
|
|
}
|
|
|
|
var param = string.Format(",ass={0}", path);
|
|
|
|
if (startTimeTicks.HasValue)
|
|
{
|
|
var seconds = Convert.ToInt32(TimeSpan.FromTicks(startTimeTicks.Value).TotalSeconds);
|
|
param += string.Format(",setpts=PTS-{0}/TB", seconds);
|
|
}
|
|
|
|
return param;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the extracted ass path.
|
|
/// </summary>
|
|
/// <param name="video">The video.</param>
|
|
/// <param name="subtitleStream">The subtitle stream.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetExtractedAssPath(Video video, MediaStream subtitleStream)
|
|
{
|
|
var path = Kernel.Instance.FFMpegManager.GetSubtitleCachePath(video, subtitleStream.Index, ".ass");
|
|
|
|
if (!File.Exists(path))
|
|
{
|
|
var success = Kernel.Instance.FFMpegManager.ExtractTextSubtitle(video, subtitleStream.Index, path, CancellationToken.None).Result;
|
|
|
|
if (!success)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the converted ass path.
|
|
/// </summary>
|
|
/// <param name="video">The video.</param>
|
|
/// <param name="subtitleStream">The subtitle stream.</param>
|
|
/// <returns>System.String.</returns>
|
|
private string GetConvertedAssPath(Video video, MediaStream subtitleStream)
|
|
{
|
|
var path = Kernel.Instance.FFMpegManager.GetSubtitleCachePath(video, subtitleStream.Index, ".ass");
|
|
|
|
if (!File.Exists(path))
|
|
{
|
|
var success = Kernel.Instance.FFMpegManager.ConvertTextSubtitle(subtitleStream, path, CancellationToken.None).Result;
|
|
|
|
if (!success)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return path;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the internal graphical subtitle param.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputVideoCodec">The output video codec.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetInternalGraphicalSubtitleParam(StreamState state, string outputVideoCodec)
|
|
{
|
|
var outputSizeParam = string.Empty;
|
|
|
|
var request = state.Request;
|
|
|
|
// Add resolution params, if specified
|
|
if (request.Width.HasValue || request.Height.HasValue || request.MaxHeight.HasValue || request.MaxWidth.HasValue)
|
|
{
|
|
outputSizeParam = GetOutputSizeParam(state, outputVideoCodec).TrimEnd('"');
|
|
outputSizeParam = "," + outputSizeParam.Substring(outputSizeParam.IndexOf("scale", StringComparison.OrdinalIgnoreCase));
|
|
}
|
|
|
|
return string.Format(" -filter_complex \"[0:{0}]format=yuva444p,lut=u=128:v=128:y=gammaval(.3)[sub] ; [0:0] [sub] overlay{1}\"", state.SubtitleStream.Index, outputSizeParam);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the number of audio channels to specify on the command line
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <param name="audioStream">The audio stream.</param>
|
|
/// <returns>System.Nullable{System.Int32}.</returns>
|
|
protected int? GetNumAudioChannelsParam(StreamRequest request, MediaStream audioStream)
|
|
{
|
|
if (audioStream.Channels > 2 && request.AudioCodec.HasValue)
|
|
{
|
|
if (request.AudioCodec.Value == AudioCodecs.Aac)
|
|
{
|
|
// libvo_aacenc currently only supports two channel output
|
|
return 2;
|
|
}
|
|
if (request.AudioCodec.Value == AudioCodecs.Wma)
|
|
{
|
|
// wmav2 currently only supports two channel output
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
return request.AudioChannels;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether the specified stream is H264.
|
|
/// </summary>
|
|
/// <param name="stream">The stream.</param>
|
|
/// <returns><c>true</c> if the specified stream is H264; otherwise, <c>false</c>.</returns>
|
|
protected bool IsH264(MediaStream stream)
|
|
{
|
|
return stream.Codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 ||
|
|
stream.Codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output audio codec
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetAudioCodec(StreamRequest request)
|
|
{
|
|
var codec = request.AudioCodec;
|
|
|
|
if (codec.HasValue)
|
|
{
|
|
if (codec == AudioCodecs.Aac)
|
|
{
|
|
return "libvo_aacenc";
|
|
}
|
|
if (codec == AudioCodecs.Mp3)
|
|
{
|
|
return "libmp3lame";
|
|
}
|
|
if (codec == AudioCodecs.Vorbis)
|
|
{
|
|
return "libvorbis";
|
|
}
|
|
if (codec == AudioCodecs.Wma)
|
|
{
|
|
return "wmav2";
|
|
}
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the name of the output video codec
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetVideoCodec(StreamRequest request)
|
|
{
|
|
var codec = request.VideoCodec;
|
|
|
|
if (codec.HasValue)
|
|
{
|
|
if (codec == VideoCodecs.H264)
|
|
{
|
|
return "libx264";
|
|
}
|
|
if (codec == VideoCodecs.Vpx)
|
|
{
|
|
return "libvpx";
|
|
}
|
|
if (codec == VideoCodecs.Wmv)
|
|
{
|
|
return "wmv2";
|
|
}
|
|
if (codec == VideoCodecs.Theora)
|
|
{
|
|
return "libtheora";
|
|
}
|
|
}
|
|
|
|
return "copy";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the input argument.
|
|
/// </summary>
|
|
/// <param name="item">The item.</param>
|
|
/// <param name="isoMount">The iso mount.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected string GetInputArgument(BaseItem item, IIsoMount isoMount)
|
|
{
|
|
return isoMount == null ?
|
|
Kernel.Instance.FFMpegManager.GetInputArgument(item) :
|
|
Kernel.Instance.FFMpegManager.GetInputArgument(item as Video, isoMount);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Starts the FFMPEG.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <returns>Task.</returns>
|
|
protected async Task StartFFMpeg(StreamState state, string outputPath)
|
|
{
|
|
var video = state.Item as Video;
|
|
|
|
if (video != null && video.VideoType == VideoType.Iso && video.IsoType.HasValue && IsoManager.CanMount(video.Path))
|
|
{
|
|
state.IsoMount = await IsoManager.Mount(video.Path, CancellationToken.None).ConfigureAwait(false);
|
|
}
|
|
|
|
var process = new Process
|
|
{
|
|
StartInfo = new ProcessStartInfo
|
|
{
|
|
CreateNoWindow = true,
|
|
UseShellExecute = false,
|
|
|
|
// Must consume both stdout and stderr or deadlocks may occur
|
|
RedirectStandardOutput = true,
|
|
RedirectStandardError = true,
|
|
|
|
FileName = Kernel.Instance.FFMpegManager.FFMpegPath,
|
|
WorkingDirectory = Path.GetDirectoryName(Kernel.Instance.FFMpegManager.FFMpegPath),
|
|
Arguments = GetCommandLineArguments(outputPath, state),
|
|
|
|
WindowStyle = ProcessWindowStyle.Hidden,
|
|
ErrorDialog = false
|
|
},
|
|
|
|
EnableRaisingEvents = true
|
|
};
|
|
|
|
ServerEntryPoint.Instance.OnTranscodeBeginning(outputPath, TranscodingJobType, process);
|
|
|
|
//Logger.Info(process.StartInfo.FileName + " " + process.StartInfo.Arguments);
|
|
|
|
var logFilePath = Path.Combine(ApplicationPaths.LogDirectoryPath, "ffmpeg-" + Guid.NewGuid() + ".txt");
|
|
|
|
// FFMpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
|
|
state.LogFileStream = new FileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous);
|
|
|
|
process.Exited += (sender, args) => OnFFMpegProcessExited(process, state);
|
|
|
|
try
|
|
{
|
|
process.Start();
|
|
}
|
|
catch (Win32Exception ex)
|
|
{
|
|
Logger.ErrorException("Error starting ffmpeg", ex);
|
|
|
|
ServerEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType);
|
|
|
|
state.LogFileStream.Dispose();
|
|
|
|
throw;
|
|
}
|
|
|
|
// MUST read both stdout and stderr asynchronously or a deadlock may occurr
|
|
process.BeginOutputReadLine();
|
|
|
|
// Important - don't await the log task or we won't be able to kill ffmpeg when the user stops playback
|
|
process.StandardError.BaseStream.CopyToAsync(state.LogFileStream);
|
|
|
|
// Wait for the file to exist before proceeeding
|
|
while (!File.Exists(outputPath))
|
|
{
|
|
await Task.Delay(100).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Processes the exited.
|
|
/// </summary>
|
|
/// <param name="process">The process.</param>
|
|
/// <param name="state">The state.</param>
|
|
protected void OnFFMpegProcessExited(Process process, StreamState state)
|
|
{
|
|
if (state.IsoMount != null)
|
|
{
|
|
state.IsoMount.Dispose();
|
|
state.IsoMount = null;
|
|
}
|
|
|
|
var outputFilePath = GetOutputFilePath(state);
|
|
|
|
state.LogFileStream.Dispose();
|
|
|
|
int? exitCode = null;
|
|
|
|
try
|
|
{
|
|
exitCode = process.ExitCode;
|
|
Logger.Info("FFMpeg exited with code {0} for {1}", exitCode.Value, outputFilePath);
|
|
}
|
|
catch
|
|
{
|
|
Logger.Info("FFMpeg exited with an error for {0}", outputFilePath);
|
|
}
|
|
|
|
process.Dispose();
|
|
|
|
ServerEntryPoint.Instance.OnTranscodingFinished(outputFilePath, TranscodingJobType);
|
|
|
|
if (!exitCode.HasValue || exitCode.Value != 0)
|
|
{
|
|
Logger.Info("Deleting partial stream file(s) {0}", outputFilePath);
|
|
|
|
try
|
|
{
|
|
DeletePartialStreamFiles(outputFilePath);
|
|
}
|
|
catch (IOException ex)
|
|
{
|
|
Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, outputFilePath);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Logger.Info("FFMpeg completed and exited normally for {0}", outputFilePath);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes the partial stream files.
|
|
/// </summary>
|
|
/// <param name="outputFilePath">The output file path.</param>
|
|
protected abstract void DeletePartialStreamFiles(string outputFilePath);
|
|
|
|
/// <summary>
|
|
/// Gets the state.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <returns>StreamState.</returns>
|
|
protected StreamState GetState(StreamRequest request)
|
|
{
|
|
var item = DtoBuilder.GetItemByClientId(request.Id, UserManager, LibraryManager);
|
|
|
|
var media = (IHasMediaStreams)item;
|
|
|
|
var url = Request.PathInfo;
|
|
|
|
if (!request.AudioCodec.HasValue)
|
|
{
|
|
request.AudioCodec = InferAudioCodec(url);
|
|
}
|
|
if (!request.VideoCodec.HasValue)
|
|
{
|
|
request.VideoCodec = InferVideoCodec(url);
|
|
}
|
|
|
|
return new StreamState
|
|
{
|
|
Item = item,
|
|
Request = request,
|
|
AudioStream = GetMediaStream(media.MediaStreams, request.AudioStreamIndex, MediaStreamType.Audio, true),
|
|
VideoStream = GetMediaStream(media.MediaStreams, request.VideoStreamIndex, MediaStreamType.Video, true),
|
|
SubtitleStream = GetMediaStream(media.MediaStreams, request.SubtitleStreamIndex, MediaStreamType.Subtitle, false),
|
|
Url = url
|
|
};
|
|
}
|
|
|
|
/// <summary>
|
|
/// Infers the audio codec based on the url
|
|
/// </summary>
|
|
/// <param name="url">The URL.</param>
|
|
/// <returns>System.Nullable{AudioCodecs}.</returns>
|
|
private AudioCodecs? InferAudioCodec(string url)
|
|
{
|
|
var ext = Path.GetExtension(url);
|
|
|
|
if (string.Equals(ext, ".mp3", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Mp3;
|
|
}
|
|
if (string.Equals(ext, ".aac", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Aac;
|
|
}
|
|
if (string.Equals(ext, ".wam", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return AudioCodecs.Wma;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Infers the video codec.
|
|
/// </summary>
|
|
/// <param name="url">The URL.</param>
|
|
/// <returns>System.Nullable{VideoCodecs}.</returns>
|
|
private VideoCodecs? InferVideoCodec(string url)
|
|
{
|
|
var ext = Path.GetExtension(url);
|
|
|
|
if (string.Equals(ext, ".asf", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.Wmv;
|
|
}
|
|
if (string.Equals(ext, ".webm", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.Vpx;
|
|
}
|
|
if (string.Equals(ext, ".ogg", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return VideoCodecs.Theora;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|
|
}
|