diff --git a/Jellyfin.Api/Controllers/AudioController.cs b/Jellyfin.Api/Controllers/AudioController.cs index 7405c26fb8..9a789989b6 100644 --- a/Jellyfin.Api/Controllers/AudioController.cs +++ b/Jellyfin.Api/Controllers/AudioController.cs @@ -146,6 +146,7 @@ namespace Jellyfin.Api.Controllers /// Optional. The index of the video stream to use. If omitted the first video stream will be used. /// Optional. The . /// Optional. The streaming options. + /// Audio file returned. /// A containing the audio file. [HttpGet("{itemId}/{stream=stream}.{container?}")] [HttpGet("{itemId}/stream")] diff --git a/Jellyfin.Api/Controllers/VideoHlsController.cs b/Jellyfin.Api/Controllers/VideoHlsController.cs new file mode 100644 index 0000000000..bd85a684ac --- /dev/null +++ b/Jellyfin.Api/Controllers/VideoHlsController.cs @@ -0,0 +1,502 @@ +using System; +using System.Collections.Generic; +using System.Globalization; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using Jellyfin.Api.Constants; +using Jellyfin.Api.Helpers; +using Jellyfin.Api.Models.PlaybackDtos; +using Jellyfin.Api.Models.StreamingDtos; +using MediaBrowser.Common.Configuration; +using MediaBrowser.Controller.Configuration; +using MediaBrowser.Controller.Devices; +using MediaBrowser.Controller.Dlna; +using MediaBrowser.Controller.Library; +using MediaBrowser.Controller.MediaEncoding; +using MediaBrowser.Controller.Net; +using MediaBrowser.Model.Configuration; +using MediaBrowser.Model.Dlna; +using MediaBrowser.Model.IO; +using MediaBrowser.Model.Net; +using Microsoft.AspNetCore.Authorization; +using Microsoft.AspNetCore.Http; +using Microsoft.AspNetCore.Mvc; +using Microsoft.Extensions.Configuration; +using Microsoft.Extensions.Logging; + +namespace Jellyfin.Api.Controllers +{ + /// + /// The video hls controller. + /// + [Authorize(Policy = Policies.DefaultAuthorization)] + public class VideoHlsController : BaseJellyfinApiController + { + private const string DefaultEncoderPreset = "superfast"; + private const TranscodingJobType TranscodingJobType = MediaBrowser.Controller.MediaEncoding.TranscodingJobType.Hls; + + private readonly EncodingHelper _encodingHelper; + private readonly IDlnaManager _dlnaManager; + private readonly IAuthorizationContext _authContext; + private readonly IUserManager _userManager; + private readonly ILibraryManager _libraryManager; + private readonly IMediaSourceManager _mediaSourceManager; + private readonly IServerConfigurationManager _serverConfigurationManager; + private readonly IMediaEncoder _mediaEncoder; + private readonly IFileSystem _fileSystem; + private readonly ISubtitleEncoder _subtitleEncoder; + private readonly IConfiguration _configuration; + private readonly IDeviceManager _deviceManager; + private readonly TranscodingJobHelper _transcodingJobHelper; + private readonly ILogger _logger; + private readonly EncodingOptions _encodingOptions; + + /// + /// Initializes a new instance of the class. + /// + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// Instance of the interface. + /// The singleton. + /// Instance of the . + public VideoHlsController( + IMediaEncoder mediaEncoder, + IFileSystem fileSystem, + ISubtitleEncoder subtitleEncoder, + IConfiguration configuration, + IDlnaManager dlnaManager, + IUserManager userManger, + IAuthorizationContext authorizationContext, + ILibraryManager libraryManager, + IMediaSourceManager mediaSourceManager, + IServerConfigurationManager serverConfigurationManager, + IDeviceManager deviceManager, + TranscodingJobHelper transcodingJobHelper, + ILogger logger) + { + _encodingHelper = new EncodingHelper(mediaEncoder, fileSystem, subtitleEncoder, configuration); + + _dlnaManager = dlnaManager; + _authContext = authorizationContext; + _userManager = userManger; + _libraryManager = libraryManager; + _mediaSourceManager = mediaSourceManager; + _serverConfigurationManager = serverConfigurationManager; + _mediaEncoder = mediaEncoder; + _fileSystem = fileSystem; + _subtitleEncoder = subtitleEncoder; + _configuration = configuration; + _deviceManager = deviceManager; + _transcodingJobHelper = transcodingJobHelper; + _logger = logger; + _encodingOptions = serverConfigurationManager.GetEncodingOptions(); + } + + /// + /// Gets a hls live stream. + /// + /// The item id. + /// The audio container. + /// Optional. If true, the original file will be streamed statically without any encoding. Use either no url extension or the original file extension. true/false. + /// The streaming parameters. + /// The tag. + /// Optional. The dlna device profile id to utilize. + /// The play session id. + /// The segment container. + /// The segment lenght. + /// The minimum number of segments. + /// The media version id, if playing an alternate version. + /// The device id of the client requesting. Used to stop encoding processes when needed. + /// Optional. Specify a audio codec to encode to, e.g. mp3. If omitted the server will auto-select using the url's extension. Options: aac, mp3, vorbis, wma. + /// Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true. + /// Whether or not to allow copying of the video stream url. + /// Whether or not to allow copying of the audio stream url. + /// Optional. Whether to break on non key frames. + /// Optional. Specify a specific audio sample rate, e.g. 44100. + /// Optional. The maximum audio bit depth. + /// Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults. + /// Optional. Specify a specific number of audio channels to encode to, e.g. 2. + /// Optional. Specify a maximum number of audio channels to encode to, e.g. 2. + /// Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high. + /// Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1. + /// Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements. + /// Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements. + /// Whether or not to copy timestamps when transcoding with an offset. Defaults to false. + /// Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms. + /// Optional. The fixed horizontal resolution of the encoded video. + /// Optional. The fixed vertical resolution of the encoded video. + /// Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults. + /// Optional. The index of the subtitle stream to use. If omitted no subtitles will be used. + /// Optional. Specify the subtitle delivery method. + /// Optional. + /// Optional. The maximum video bit depth. + /// Optional. Whether to require avc. + /// Optional. Whether to deinterlace the video. + /// Optional. Whether to require a non anamporphic stream. + /// Optional. The maximum number of audio channels to transcode. + /// Optional. The limit of how many cpu cores to use. + /// The live stream id. + /// Optional. Whether to enable the MpegtsM2Ts mode. + /// Optional. Specify a video codec to encode to, e.g. h264. If omitted the server will auto-select using the url's extension. Options: h265, h264, mpeg4, theora, vpx, wmv. + /// Optional. Specify a subtitle codec to encode to. + /// Optional. The transcoding reason. + /// Optional. The index of the audio stream to use. If omitted the first audio stream will be used. + /// Optional. The index of the video stream to use. If omitted the first video stream will be used. + /// Optional. The . + /// Optional. The streaming options. + /// Optional. The max width. + /// Optional. The max height. + /// Optional. Whether to enable subtitles in the manifest. + /// Hls live stream retreaved. + /// A containing the hls file. + [HttpGet("/Videos/{itemId}/live.m3u8")] + [ProducesResponseType(StatusCodes.Status200OK)] + public async Task GetLiveHlsStream( + [FromRoute] Guid itemId, + [FromQuery] string? container, + [FromQuery] bool? @static, + [FromQuery] string? @params, + [FromQuery] string? tag, + [FromQuery] string? deviceProfileId, + [FromQuery] string? playSessionId, + [FromQuery] string? segmentContainer, + [FromQuery] int? segmentLength, + [FromQuery] int? minSegments, + [FromQuery] string? mediaSourceId, + [FromQuery] string? deviceId, + [FromQuery] string? audioCodec, + [FromQuery] bool? enableAutoStreamCopy, + [FromQuery] bool? allowVideoStreamCopy, + [FromQuery] bool? allowAudioStreamCopy, + [FromQuery] bool? breakOnNonKeyFrames, + [FromQuery] int? audioSampleRate, + [FromQuery] int? maxAudioBitDepth, + [FromQuery] int? audioBitRate, + [FromQuery] int? audioChannels, + [FromQuery] int? maxAudioChannels, + [FromQuery] string? profile, + [FromQuery] string? level, + [FromQuery] float? framerate, + [FromQuery] float? maxFramerate, + [FromQuery] bool? copyTimestamps, + [FromQuery] long? startTimeTicks, + [FromQuery] int? width, + [FromQuery] int? height, + [FromQuery] int? videoBitRate, + [FromQuery] int? subtitleStreamIndex, + [FromQuery] SubtitleDeliveryMethod subtitleMethod, + [FromQuery] int? maxRefFrames, + [FromQuery] int? maxVideoBitDepth, + [FromQuery] bool? requireAvc, + [FromQuery] bool? deInterlace, + [FromQuery] bool? requireNonAnamorphic, + [FromQuery] int? transcodingMaxAudioChannels, + [FromQuery] int? cpuCoreLimit, + [FromQuery] string? liveStreamId, + [FromQuery] bool? enableMpegtsM2TsMode, + [FromQuery] string? videoCodec, + [FromQuery] string? subtitleCodec, + [FromQuery] string? transcodingReasons, + [FromQuery] int? audioStreamIndex, + [FromQuery] int? videoStreamIndex, + [FromQuery] EncodingContext context, + [FromQuery] Dictionary streamOptions, + [FromQuery] int? maxWidth, + [FromQuery] int? maxHeight, + [FromQuery] bool? enableSubtitlesInManifest) + { + VideoRequestDto streamingRequest = new VideoRequestDto + { + Id = itemId, + Container = container, + Static = @static ?? true, + Params = @params, + Tag = tag, + DeviceProfileId = deviceProfileId, + PlaySessionId = playSessionId, + SegmentContainer = segmentContainer, + SegmentLength = segmentLength, + MinSegments = minSegments, + MediaSourceId = mediaSourceId, + DeviceId = deviceId, + AudioCodec = audioCodec, + EnableAutoStreamCopy = enableAutoStreamCopy ?? true, + AllowAudioStreamCopy = allowAudioStreamCopy ?? true, + AllowVideoStreamCopy = allowVideoStreamCopy ?? true, + BreakOnNonKeyFrames = breakOnNonKeyFrames ?? false, + AudioSampleRate = audioSampleRate, + MaxAudioChannels = maxAudioChannels, + AudioBitRate = audioBitRate, + MaxAudioBitDepth = maxAudioBitDepth, + AudioChannels = audioChannels, + Profile = profile, + Level = level, + Framerate = framerate, + MaxFramerate = maxFramerate, + CopyTimestamps = copyTimestamps ?? true, + StartTimeTicks = startTimeTicks, + Width = width, + Height = height, + VideoBitRate = videoBitRate, + SubtitleStreamIndex = subtitleStreamIndex, + SubtitleMethod = subtitleMethod, + MaxRefFrames = maxRefFrames, + MaxVideoBitDepth = maxVideoBitDepth, + RequireAvc = requireAvc ?? true, + DeInterlace = deInterlace ?? true, + RequireNonAnamorphic = requireNonAnamorphic ?? true, + TranscodingMaxAudioChannels = transcodingMaxAudioChannels, + CpuCoreLimit = cpuCoreLimit, + LiveStreamId = liveStreamId, + EnableMpegtsM2TsMode = enableMpegtsM2TsMode ?? true, + VideoCodec = videoCodec, + SubtitleCodec = subtitleCodec, + TranscodeReasons = transcodingReasons, + AudioStreamIndex = audioStreamIndex, + VideoStreamIndex = videoStreamIndex, + Context = context, + StreamOptions = streamOptions, + MaxHeight = maxHeight, + MaxWidth = maxWidth, + EnableSubtitlesInManifest = enableSubtitlesInManifest ?? true + }; + + var cancellationTokenSource = new CancellationTokenSource(); + var state = await StreamingHelpers.GetStreamingState( + streamingRequest, + Request, + _authContext, + _mediaSourceManager, + _userManager, + _libraryManager, + _serverConfigurationManager, + _mediaEncoder, + _fileSystem, + _subtitleEncoder, + _configuration, + _dlnaManager, + _deviceManager, + _transcodingJobHelper, + TranscodingJobType, + cancellationTokenSource.Token) + .ConfigureAwait(false); + + TranscodingJobDto? job = null; + var playlist = state.OutputFilePath; + + if (!System.IO.File.Exists(playlist)) + { + var transcodingLock = _transcodingJobHelper.GetTranscodingLock(playlist); + await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false); + try + { + if (!System.IO.File.Exists(playlist)) + { + // If the playlist doesn't already exist, startup ffmpeg + try + { + job = await _transcodingJobHelper.StartFfMpeg( + state, + playlist, + GetCommandLineArguments(playlist, state), + Request, + TranscodingJobType, + cancellationTokenSource) + .ConfigureAwait(false); + job.IsLiveOutput = true; + } + catch + { + state.Dispose(); + throw; + } + + minSegments = state.MinSegments; + if (minSegments > 0) + { + await HlsHelpers.WaitForMinimumSegmentCount(playlist, minSegments, _logger, cancellationTokenSource.Token).ConfigureAwait(false); + } + } + } + finally + { + transcodingLock.Release(); + } + } + + job ??= _transcodingJobHelper.OnTranscodeBeginRequest(playlist, TranscodingJobType); + + if (job != null) + { + _transcodingJobHelper.OnTranscodeEndRequest(job); + } + + var playlistText = HlsHelpers.GetLivePlaylistText(playlist, state.SegmentLength); + + return Content(playlistText, MimeTypes.GetMimeType("playlist.m3u8")); + } + + /// + /// Gets the command line arguments for ffmpeg. + /// + /// The output path of the file. + /// The . + /// The command line arguments as a string. + private string GetCommandLineArguments(string outputPath, StreamState state) + { + var videoCodec = _encodingHelper.GetVideoEncoder(state, _encodingOptions); + var threads = _encodingHelper.GetNumberOfThreads(state, _encodingOptions, videoCodec); + var inputModifier = _encodingHelper.GetInputModifier(state, _encodingOptions); + var format = !string.IsNullOrWhiteSpace(state.Request.SegmentContainer) ? "." + state.Request.SegmentContainer : ".ts"; + var outputTsArg = Path.Combine(Path.GetDirectoryName(outputPath), Path.GetFileNameWithoutExtension(outputPath)) + "%d" + format; + + var segmentFormat = format.TrimStart('.'); + if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase)) + { + segmentFormat = "mpegts"; + } + + var baseUrlParam = string.Format( + CultureInfo.InvariantCulture, + "\"hls{0}\"", + Path.GetFileNameWithoutExtension(outputPath)); + + return string.Format( + CultureInfo.InvariantCulture, + "{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f segment -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -segment_time {6} {7} -individual_header_trailer 0 -segment_format {8} -segment_list_entry_prefix {9} -segment_list_type m3u8 -segment_start_number 0 -segment_list \"{10}\" -y \"{11}\"", + inputModifier, + _encodingHelper.GetInputArgument(state, _encodingOptions), + threads, + _encodingHelper.GetMapArgs(state), + GetVideoArguments(state), + GetAudioArguments(state), + state.SegmentLength.ToString(CultureInfo.InvariantCulture), + string.Empty, + segmentFormat, + baseUrlParam, + outputPath, + outputTsArg) + .Trim(); + } + + /// + /// Gets the audio arguments for transcoding. + /// + /// The . + /// The command line arguments for audio transcoding. + private string GetAudioArguments(StreamState state) + { + var codec = _encodingHelper.GetAudioEncoder(state); + + if (EncodingHelper.IsCopyCodec(codec)) + { + return "-codec:a:0 copy"; + } + + var args = "-codec:a:0 " + codec; + + var channels = state.OutputAudioChannels; + + if (channels.HasValue) + { + args += " -ac " + channels.Value; + } + + var bitrate = state.OutputAudioBitrate; + + if (bitrate.HasValue) + { + args += " -ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture); + } + + if (state.OutputAudioSampleRate.HasValue) + { + args += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture); + } + + args += " " + _encodingHelper.GetAudioFilterParam(state, _encodingOptions, true); + + return args; + } + + /// + /// Gets the video arguments for transcoding. + /// + /// The . + /// The command line arguments for video transcoding. + private string GetVideoArguments(StreamState state) + { + if (!state.IsOutputVideo) + { + return string.Empty; + } + + var codec = _encodingHelper.GetVideoEncoder(state, _encodingOptions); + + var args = "-codec:v:0 " + 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)) + { + // if h264_mp4toannexb is ever added, do not use it for live tv + if (state.VideoStream != null && + !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase)) + { + string bitStreamArgs = _encodingHelper.GetBitStreamArgs(state.VideoStream); + if (!string.IsNullOrEmpty(bitStreamArgs)) + { + args += " " + bitStreamArgs; + } + } + } + else + { + var keyFrameArg = string.Format( + CultureInfo.InvariantCulture, + " -force_key_frames \"expr:gte(t,n_forced*{0})\"", + state.SegmentLength.ToString(CultureInfo.InvariantCulture)); + + var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode; + + args += " " + _encodingHelper.GetVideoQualityParam(state, codec, _encodingOptions, DefaultEncoderPreset) + keyFrameArg; + + // Add resolution params, if specified + if (!hasGraphicalSubs) + { + args += _encodingHelper.GetOutputSizeParam(state, _encodingOptions, codec); + } + + // This is for internal graphical subs + if (hasGraphicalSubs) + { + args += _encodingHelper.GetGraphicalSubtitleParam(state, _encodingOptions, codec); + } + } + + args += " -flags -global_header"; + + if (!string.IsNullOrEmpty(state.OutputVideoSync)) + { + args += " -vsync " + state.OutputVideoSync; + } + + args += _encodingHelper.GetOutputFFlags(state); + + return args; + } + } +} diff --git a/Jellyfin.Api/Helpers/HlsHelpers.cs b/Jellyfin.Api/Helpers/HlsHelpers.cs new file mode 100644 index 0000000000..2424966973 --- /dev/null +++ b/Jellyfin.Api/Helpers/HlsHelpers.cs @@ -0,0 +1,95 @@ +using System; +using System.Globalization; +using System.IO; +using System.Threading; +using System.Threading.Tasks; +using MediaBrowser.Model.IO; +using Microsoft.Extensions.Logging; + +namespace Jellyfin.Api.Helpers +{ + /// + /// The hls helpers. + /// + public static class HlsHelpers + { + /// + /// Waits for a minimum number of segments to be available. + /// + /// The playlist string. + /// The segment count. + /// Instance of the interface. + /// The . + /// A indicating the waiting process. + public static async Task WaitForMinimumSegmentCount(string playlist, int? segmentCount, ILogger logger, CancellationToken cancellationToken) + { + logger.LogDebug("Waiting for {0} segments in {1}", segmentCount, playlist); + + while (!cancellationToken.IsCancellationRequested) + { + try + { + // Need to use FileShare.ReadWrite because we're reading the file at the same time it's being written + var fileStream = new FileStream( + playlist, + FileMode.Open, + FileAccess.Read, + FileShare.ReadWrite, + IODefaults.FileStreamBufferSize, + FileOptions.SequentialScan); + await using (fileStream.ConfigureAwait(false)) + { + using var reader = new StreamReader(fileStream); + var count = 0; + + while (!reader.EndOfStream) + { + var line = await reader.ReadLineAsync().ConfigureAwait(false); + + if (line.IndexOf("#EXTINF:", StringComparison.OrdinalIgnoreCase) != -1) + { + count++; + if (count >= segmentCount) + { + logger.LogDebug("Finished waiting for {0} segments in {1}", segmentCount, playlist); + return; + } + } + } + } + + await Task.Delay(100, cancellationToken).ConfigureAwait(false); + } + catch (IOException) + { + // May get an error if the file is locked + } + + await Task.Delay(50, cancellationToken).ConfigureAwait(false); + } + } + + /// + /// Gets the hls playlist text. + /// + /// The path to the playlist file. + /// The segment length. + /// The playlist text as a string. + public static string GetLivePlaylistText(string path, int segmentLength) + { + using var stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); + using var reader = new StreamReader(stream); + + var text = reader.ReadToEnd(); + + text = text.Replace("#EXTM3U", "#EXTM3U\n#EXT-X-PLAYLIST-TYPE:EVENT", StringComparison.InvariantCulture); + + var newDuration = "#EXT-X-TARGETDURATION:" + segmentLength.ToString(CultureInfo.InvariantCulture); + + text = text.Replace("#EXT-X-TARGETDURATION:" + (segmentLength - 1).ToString(CultureInfo.InvariantCulture), newDuration, StringComparison.OrdinalIgnoreCase); + // text = text.Replace("#EXT-X-TARGETDURATION:" + (segmentLength + 1).ToString(CultureInfo.InvariantCulture), newDuration, StringComparison.OrdinalIgnoreCase); + + return text; + } + } +} diff --git a/MediaBrowser.Api/Playback/Hls/VideoHlsService.cs b/MediaBrowser.Api/Playback/Hls/VideoHlsService.cs index 9562f9953a..4487522c1b 100644 --- a/MediaBrowser.Api/Playback/Hls/VideoHlsService.cs +++ b/MediaBrowser.Api/Playback/Hls/VideoHlsService.cs @@ -1,173 +1,6 @@ -using System; -using System.Globalization; -using System.Threading.Tasks; -using MediaBrowser.Controller.Configuration; -using MediaBrowser.Controller.Devices; -using MediaBrowser.Controller.Dlna; -using MediaBrowser.Controller.Library; -using MediaBrowser.Controller.MediaEncoding; -using MediaBrowser.Controller.Net; -using MediaBrowser.Model.Configuration; -using MediaBrowser.Model.Dlna; -using MediaBrowser.Model.IO; -using MediaBrowser.Model.Serialization; -using MediaBrowser.Model.Services; -using Microsoft.Extensions.Logging; - namespace MediaBrowser.Api.Playback.Hls { - [Route("/Videos/{Id}/live.m3u8", "GET")] public class GetLiveHlsStream : VideoStreamRequest { } - - /// - /// Class VideoHlsService. - /// - [Authenticated] - public class VideoHlsService : BaseHlsService - { - public VideoHlsService( - ILogger logger, - IServerConfigurationManager serverConfigurationManager, - IHttpResultFactory httpResultFactory, - IUserManager userManager, - ILibraryManager libraryManager, - IIsoManager isoManager, - IMediaEncoder mediaEncoder, - IFileSystem fileSystem, - IDlnaManager dlnaManager, - IDeviceManager deviceManager, - IMediaSourceManager mediaSourceManager, - IJsonSerializer jsonSerializer, - IAuthorizationContext authorizationContext, - EncodingHelper encodingHelper) - : base( - logger, - serverConfigurationManager, - httpResultFactory, - userManager, - libraryManager, - isoManager, - mediaEncoder, - fileSystem, - dlnaManager, - deviceManager, - mediaSourceManager, - jsonSerializer, - authorizationContext, - encodingHelper) - { - } - - public Task Get(GetLiveHlsStream request) - { - return ProcessRequestAsync(request, true); - } - - /// - /// Gets the audio arguments. - /// - protected override string GetAudioArguments(StreamState state, EncodingOptions encodingOptions) - { - var codec = EncodingHelper.GetAudioEncoder(state); - - if (EncodingHelper.IsCopyCodec(codec)) - { - return "-codec:a:0 copy"; - } - - var args = "-codec:a:0 " + codec; - - var channels = state.OutputAudioChannels; - - if (channels.HasValue) - { - args += " -ac " + channels.Value; - } - - var bitrate = state.OutputAudioBitrate; - - if (bitrate.HasValue) - { - args += " -ab " + bitrate.Value.ToString(CultureInfo.InvariantCulture); - } - - if (state.OutputAudioSampleRate.HasValue) - { - args += " -ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture); - } - - args += " " + EncodingHelper.GetAudioFilterParam(state, encodingOptions, true); - - return args; - } - - /// - /// Gets the video arguments. - /// - protected override string GetVideoArguments(StreamState state, EncodingOptions encodingOptions) - { - if (!state.IsOutputVideo) - { - return string.Empty; - } - - var codec = EncodingHelper.GetVideoEncoder(state, encodingOptions); - - var args = "-codec:v:0 " + 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)) - { - // if h264_mp4toannexb is ever added, do not use it for live tv - if (state.VideoStream != null && - !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase)) - { - string bitStreamArgs = EncodingHelper.GetBitStreamArgs(state.VideoStream); - if (!string.IsNullOrEmpty(bitStreamArgs)) - { - args += " " + bitStreamArgs; - } - } - } - else - { - var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"", - state.SegmentLength.ToString(CultureInfo.InvariantCulture)); - - var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode; - - args += " " + EncodingHelper.GetVideoQualityParam(state, codec, encodingOptions, GetDefaultEncoderPreset()) + keyFrameArg; - - // Add resolution params, if specified - if (!hasGraphicalSubs) - { - args += EncodingHelper.GetOutputSizeParam(state, encodingOptions, codec); - } - - // This is for internal graphical subs - if (hasGraphicalSubs) - { - args += EncodingHelper.GetGraphicalSubtitleParam(state, encodingOptions, codec); - } - } - - args += " -flags -global_header"; - - if (!string.IsNullOrEmpty(state.OutputVideoSync)) - { - args += " -vsync " + state.OutputVideoSync; - } - - args += EncodingHelper.GetOutputFFlags(state); - - return args; - } - } }