using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Dlna;
using MediaBrowser.Controller.Drawing;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Model.IO;
using ServiceStack;
using System;
using System.IO;
using System.Threading;
namespace MediaBrowser.Api.Playback.Progressive
{
///
/// Class GetAudioStream
///
[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", "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", "HEAD")]
[Api(Description = "Gets a video stream")]
public class GetVideoStream : VideoStreamRequest
{
}
///
/// Class VideoService
///
public class VideoService : BaseProgressiveStreamingService
{
public VideoService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, ILiveTvManager liveTvManager, IDlnaManager dlnaManager, IChannelManager channelManager, ISubtitleEncoder subtitleEncoder, IImageProcessor imageProcessor, IHttpClient httpClient) : base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, fileSystem, liveTvManager, dlnaManager, channelManager, subtitleEncoder, imageProcessor, httpClient)
{
}
///
/// Gets the specified request.
///
/// The request.
/// System.Object.
public object Get(GetVideoStream request)
{
return ProcessRequest(request, false);
}
///
/// Heads the specified request.
///
/// The request.
/// System.Object.
public object Head(GetVideoStream request)
{
return ProcessRequest(request, true);
}
///
/// Gets the command line arguments.
///
/// The output path.
/// The state.
/// if set to true [is encoding].
/// System.String.
protected override string GetCommandLineArguments(string outputPath, StreamState state, bool isEncoding)
{
// Get the output codec name
var videoCodec = state.OutputVideoCodec;
var format = string.Empty;
var keyFrame = string.Empty;
if (string.Equals(Path.GetExtension(outputPath), ".mp4", StringComparison.OrdinalIgnoreCase))
{
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} -i {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();
}
///
/// Gets video arguments to pass to ffmpeg
///
/// The state.
/// The video codec.
/// System.String.
private string GetVideoArguments(StreamState state, string codec)
{
var args = "-vcodec " + codec;
if (state.EnableMpegtsM2TsMode)
{
args += " -mpegts_m2ts_mode 1";
}
// See if we can save come cpu cycles by avoiding encoding
if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
{
// TODO: Switch to -bsf dump_extra ?
return state.VideoStream != null && IsH264(state.VideoStream) ? args + " -bsf h264_mp4toannexb" : args;
}
const string keyFrameArg = " -force_key_frames expr:if(isnan(prev_forced_t),gte(t,.1),gte(t,prev_forced_t+5))";
args += keyFrameArg;
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream;
// Add resolution params, if specified
if (!hasGraphicalSubs)
{
args += GetOutputSizeParam(state, codec, CancellationToken.None);
}
var qualityParam = GetVideoQualityParam(state, codec, false);
if (!string.IsNullOrEmpty(qualityParam))
{
args += " " + qualityParam.Trim();
}
// This is for internal graphical subs
if (hasGraphicalSubs)
{
args += GetInternalGraphicalSubtitleParam(state, codec);
}
return args;
}
///
/// Gets audio arguments to pass to ffmpeg
///
/// The state.
/// System.String.
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 = state.OutputAudioCodec;
if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
{
return "-acodec copy";
}
var args = "-acodec " + codec;
// 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;
}
}
}