126 lines
4.1 KiB
C#
126 lines
4.1 KiB
C#
using MediaBrowser.Common.IO;
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using MediaBrowser.Controller;
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using MediaBrowser.Controller.Library;
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using System;
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namespace MediaBrowser.Api.Playback.Hls
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{
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public class VideoHlsService : BaseHlsService
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{
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public VideoHlsService(IServerApplicationPaths appPaths, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager)
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: base(appPaths, userManager, libraryManager, isoManager)
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{
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}
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/// <summary>
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/// Gets the audio arguments.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected override string GetAudioArguments(StreamState state)
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{
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if (!state.Request.AudioCodec.HasValue)
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{
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return "-codec:a:0 copy";
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}
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var codec = GetAudioCodec(state.Request);
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var args = "-codec:a:0 " + codec;
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if (state.AudioStream != null)
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{
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var channels = GetNumAudioChannelsParam(state.Request, state.AudioStream);
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if (channels.HasValue)
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{
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args += " -ac " + channels.Value;
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}
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if (state.Request.AudioSampleRate.HasValue)
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{
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args += " -ar " + state.Request.AudioSampleRate.Value;
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}
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if (state.Request.AudioBitRate.HasValue)
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{
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args += " -ab " + state.Request.AudioBitRate.Value;
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}
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return args;
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}
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return args;
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}
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/// <summary>
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/// Gets the video arguments.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected override string GetVideoArguments(StreamState state)
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{
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var codec = GetVideoCodec(state.VideoRequest);
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// Right now all we support is either h264 or copy
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if (!codec.Equals("copy", StringComparison.OrdinalIgnoreCase) && !codec.Equals("libx264", StringComparison.OrdinalIgnoreCase))
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{
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codec = "libx264";
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}
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// See if we can save come cpu cycles by avoiding encoding
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if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
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{
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return IsH264(state.VideoStream) ? "-codec:v:0 copy -bsf h264_mp4toannexb" : "-codec:v:0 copy";
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}
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var args = "-codec:v:0 " + codec + " -preset superfast";
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if (state.VideoRequest.VideoBitRate.HasValue)
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{
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args += string.Format(" -b:v {0}", state.VideoRequest.VideoBitRate.Value);
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}
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// Add resolution params, if specified
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if (state.VideoRequest.Width.HasValue || state.VideoRequest.Height.HasValue || state.VideoRequest.MaxHeight.HasValue || state.VideoRequest.MaxWidth.HasValue)
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{
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args += GetOutputSizeParam(state, codec);
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}
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// Get the output framerate based on the FrameRate param
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double framerate = state.VideoRequest.Framerate ?? 0;
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// We have to supply a framerate for hls, so if it's null, account for that here
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if (framerate.Equals(0))
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{
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framerate = state.VideoStream.AverageFrameRate ?? 0;
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}
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if (framerate.Equals(0))
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{
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framerate = state.VideoStream.RealFrameRate ?? 0;
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}
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if (framerate.Equals(0))
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{
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framerate = 23.976;
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}
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args += string.Format(" -r {0}", framerate);
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// Needed to ensure segments stay under 10 seconds
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args += string.Format(" -g {0}", framerate);
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return args;
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}
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/// <summary>
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/// Gets the segment file extension.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected override string GetSegmentFileExtension(StreamState state)
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{
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return ".ts";
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}
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}
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}
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