jellyfin/MediaBrowser.Api/Playback/Progressive/VideoService.cs
2016-08-07 16:13:30 -04:00

240 lines
8.8 KiB
C#

using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Devices;
using MediaBrowser.Controller.Dlna;
using MediaBrowser.Controller.Drawing;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Serialization;
using ServiceStack;
using System;
using System.IO;
using System.Threading.Tasks;
using CommonIO;
using MediaBrowser.Model.Dlna;
namespace MediaBrowser.Api.Playback.Progressive
{
/// <summary>
/// Class GetVideoStream
/// </summary>
[Route("/Videos/{Id}/stream.mpegts", "GET")]
[Route("/Videos/{Id}/stream.ts", "GET")]
[Route("/Videos/{Id}/stream.webm", "GET")]
[Route("/Videos/{Id}/stream.asf", "GET")]
[Route("/Videos/{Id}/stream.wmv", "GET")]
[Route("/Videos/{Id}/stream.ogv", "GET")]
[Route("/Videos/{Id}/stream.mp4", "GET")]
[Route("/Videos/{Id}/stream.m4v", "GET")]
[Route("/Videos/{Id}/stream.mkv", "GET")]
[Route("/Videos/{Id}/stream.mpeg", "GET")]
[Route("/Videos/{Id}/stream.mpg", "GET")]
[Route("/Videos/{Id}/stream.avi", "GET")]
[Route("/Videos/{Id}/stream.m2ts", "GET")]
[Route("/Videos/{Id}/stream.3gp", "GET")]
[Route("/Videos/{Id}/stream.wmv", "GET")]
[Route("/Videos/{Id}/stream.wtv", "GET")]
[Route("/Videos/{Id}/stream.mov", "GET")]
[Route("/Videos/{Id}/stream.iso", "GET")]
[Route("/Videos/{Id}/stream", "GET")]
[Route("/Videos/{Id}/stream.ts", "HEAD")]
[Route("/Videos/{Id}/stream.webm", "HEAD")]
[Route("/Videos/{Id}/stream.asf", "HEAD")]
[Route("/Videos/{Id}/stream.wmv", "HEAD")]
[Route("/Videos/{Id}/stream.ogv", "HEAD")]
[Route("/Videos/{Id}/stream.mp4", "HEAD")]
[Route("/Videos/{Id}/stream.m4v", "HEAD")]
[Route("/Videos/{Id}/stream.mkv", "HEAD")]
[Route("/Videos/{Id}/stream.mpeg", "HEAD")]
[Route("/Videos/{Id}/stream.mpg", "HEAD")]
[Route("/Videos/{Id}/stream.avi", "HEAD")]
[Route("/Videos/{Id}/stream.3gp", "HEAD")]
[Route("/Videos/{Id}/stream.wmv", "HEAD")]
[Route("/Videos/{Id}/stream.wtv", "HEAD")]
[Route("/Videos/{Id}/stream.m2ts", "HEAD")]
[Route("/Videos/{Id}/stream.mov", "HEAD")]
[Route("/Videos/{Id}/stream.iso", "HEAD")]
[Route("/Videos/{Id}/stream", "HEAD")]
[Api(Description = "Gets a video stream")]
public class GetVideoStream : VideoStreamRequest
{
}
/// <summary>
/// Class VideoService
/// </summary>
public class VideoService : BaseProgressiveStreamingService
{
public VideoService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, IDlnaManager dlnaManager, ISubtitleEncoder subtitleEncoder, IDeviceManager deviceManager, IMediaSourceManager mediaSourceManager, IZipClient zipClient, IJsonSerializer jsonSerializer, IImageProcessor imageProcessor, IHttpClient httpClient)
: base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, fileSystem, dlnaManager, subtitleEncoder, deviceManager, mediaSourceManager, zipClient, jsonSerializer, imageProcessor, httpClient)
{
}
/// <summary>
/// Gets the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.Object.</returns>
public Task<object> Get(GetVideoStream request)
{
return ProcessRequest(request, false);
}
/// <summary>
/// Heads the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.Object.</returns>
public Task<object> Head(GetVideoStream request)
{
return ProcessRequest(request, true);
}
protected override string GetCommandLineArguments(string outputPath, StreamState state, bool isEncoding)
{
// Get the output codec name
var videoCodec = GetVideoEncoder(state);
var format = string.Empty;
var keyFrame = string.Empty;
if (string.Equals(Path.GetExtension(outputPath), ".mp4", StringComparison.OrdinalIgnoreCase))
{
// Comparison: https://github.com/jansmolders86/mediacenterjs/blob/master/lib/transcoding/desktop.js
format = " -f mp4 -movflags frag_keyframe+empty_moov";
}
var threads = GetNumberOfThreads(state, string.Equals(videoCodec, "libvpx", StringComparison.OrdinalIgnoreCase));
var inputModifier = GetInputModifier(state);
return string.Format("{0} {1}{2} {3} {4} -map_metadata -1 -threads {5} {6}{7} -y \"{8}\"",
inputModifier,
GetInputArgument(state),
keyFrame,
GetMapArgs(state),
GetVideoArguments(state, videoCodec),
threads,
GetAudioArguments(state),
format,
outputPath
).Trim();
}
/// <summary>
/// Gets video arguments to pass to ffmpeg
/// </summary>
/// <param name="state">The state.</param>
/// <param name="videoCodec">The video codec.</param>
/// <returns>System.String.</returns>
private string GetVideoArguments(StreamState state, string videoCodec)
{
var args = "-codec:v:0 " + videoCodec;
if (state.EnableMpegtsM2TsMode)
{
args += " -mpegts_m2ts_mode 1";
}
if (string.Equals(videoCodec, "copy", StringComparison.OrdinalIgnoreCase))
{
if (state.VideoStream != null && IsH264(state.VideoStream) && string.Equals(state.OutputContainer, "ts", StringComparison.OrdinalIgnoreCase) && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
{
args += " -bsf:v h264_mp4toannexb";
}
if (state.RunTimeTicks.HasValue && state.VideoRequest.CopyTimestamps)
{
args += " -copyts -avoid_negative_ts disabled -start_at_zero";
}
return args;
}
var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"",
5.ToString(UsCulture));
args += keyFrameArg;
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.VideoRequest.SubtitleMethod == SubtitleDeliveryMethod.Encode;
var hasCopyTs = false;
// Add resolution params, if specified
if (!hasGraphicalSubs)
{
var outputSizeParam = GetOutputSizeParam(state, videoCodec);
args += outputSizeParam;
hasCopyTs = outputSizeParam.IndexOf("copyts", StringComparison.OrdinalIgnoreCase) != -1;
}
if (state.RunTimeTicks.HasValue && state.VideoRequest.CopyTimestamps)
{
if (!hasCopyTs)
{
args += " -copyts";
}
args += " -avoid_negative_ts disabled -start_at_zero";
}
var qualityParam = GetVideoQualityParam(state, videoCodec);
if (!string.IsNullOrEmpty(qualityParam))
{
args += " " + qualityParam.Trim();
}
// This is for internal graphical subs
if (hasGraphicalSubs)
{
args += GetGraphicalSubtitleParam(state, videoCodec);
}
return args;
}
/// <summary>
/// Gets audio arguments to pass to ffmpeg
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
private string GetAudioArguments(StreamState state)
{
// If the video doesn't have an audio stream, return a default.
if (state.AudioStream == null && state.VideoStream != null)
{
return string.Empty;
}
// Get the output codec name
var codec = GetAudioEncoder(state);
var args = "-codec:a:0 " + codec;
if (string.Equals(codec, "copy", StringComparison.OrdinalIgnoreCase))
{
return args;
}
// Add the number of audio channels
var channels = state.OutputAudioChannels;
if (channels.HasValue)
{
args += " -ac " + channels.Value;
}
var bitrate = state.OutputAudioBitrate;
if (bitrate.HasValue)
{
args += " -ab " + bitrate.Value.ToString(UsCulture);
}
args += " " + GetAudioFilterParam(state, false);
return args;
}
}
}