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Diffstat (limited to 'Jellyfin.Api/Controllers/DynamicHlsController.cs')
| -rw-r--r-- | Jellyfin.Api/Controllers/DynamicHlsController.cs | 2216 |
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diff --git a/Jellyfin.Api/Controllers/DynamicHlsController.cs b/Jellyfin.Api/Controllers/DynamicHlsController.cs new file mode 100644 index 000000000..f6f08e873 --- /dev/null +++ b/Jellyfin.Api/Controllers/DynamicHlsController.cs @@ -0,0 +1,2216 @@ +using System; +using System.Collections.Generic; +using System.ComponentModel.DataAnnotations; +using System.Diagnostics.CodeAnalysis; +using System.Globalization; +using System.IO; +using System.Linq; +using System.Text; +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.Common.Net; +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.Entities; +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; +using Microsoft.Net.Http.Headers; + +namespace Jellyfin.Api.Controllers +{ + /// <summary> + /// Dynamic hls controller. + /// </summary> + [Route("")] + [Authorize(Policy = Policies.DefaultAuthorization)] + public class DynamicHlsController : BaseJellyfinApiController + { + private readonly ILibraryManager _libraryManager; + private readonly IUserManager _userManager; + private readonly IDlnaManager _dlnaManager; + private readonly IAuthorizationContext _authContext; + 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 INetworkManager _networkManager; + private readonly ILogger<DynamicHlsController> _logger; + private readonly EncodingHelper _encodingHelper; + + private readonly TranscodingJobType _transcodingJobType = TranscodingJobType.Hls; + + /// <summary> + /// Initializes a new instance of the <see cref="DynamicHlsController"/> class. + /// </summary> + /// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param> + /// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param> + /// <param name="dlnaManager">Instance of the <see cref="IDlnaManager"/> interface.</param> + /// <param name="authContext">Instance of the <see cref="IAuthorizationContext"/> interface.</param> + /// <param name="mediaSourceManager">Instance of the <see cref="IMediaSourceManager"/> interface.</param> + /// <param name="serverConfigurationManager">Instance of the <see cref="IServerConfigurationManager"/> interface.</param> + /// <param name="mediaEncoder">Instance of the <see cref="IMediaEncoder"/> interface.</param> + /// <param name="fileSystem">Instance of the <see cref="IFileSystem"/> interface.</param> + /// <param name="subtitleEncoder">Instance of the <see cref="ISubtitleEncoder"/> interface.</param> + /// <param name="configuration">Instance of the <see cref="IConfiguration"/> interface.</param> + /// <param name="deviceManager">Instance of the <see cref="IDeviceManager"/> interface.</param> + /// <param name="transcodingJobHelper">Instance of the <see cref="TranscodingJobHelper"/> class.</param> + /// <param name="networkManager">Instance of the <see cref="INetworkManager"/> interface.</param> + /// <param name="logger">Instance of the <see cref="ILogger{DynamicHlsController}"/> interface.</param> + public DynamicHlsController( + ILibraryManager libraryManager, + IUserManager userManager, + IDlnaManager dlnaManager, + IAuthorizationContext authContext, + IMediaSourceManager mediaSourceManager, + IServerConfigurationManager serverConfigurationManager, + IMediaEncoder mediaEncoder, + IFileSystem fileSystem, + ISubtitleEncoder subtitleEncoder, + IConfiguration configuration, + IDeviceManager deviceManager, + TranscodingJobHelper transcodingJobHelper, + INetworkManager networkManager, + ILogger<DynamicHlsController> logger) + { + _libraryManager = libraryManager; + _userManager = userManager; + _dlnaManager = dlnaManager; + _authContext = authContext; + _mediaSourceManager = mediaSourceManager; + _serverConfigurationManager = serverConfigurationManager; + _mediaEncoder = mediaEncoder; + _fileSystem = fileSystem; + _subtitleEncoder = subtitleEncoder; + _configuration = configuration; + _deviceManager = deviceManager; + _transcodingJobHelper = transcodingJobHelper; + _networkManager = networkManager; + _logger = logger; + + _encodingHelper = new EncodingHelper(_mediaEncoder, _fileSystem, _subtitleEncoder, _configuration); + } + + /// <summary> + /// Gets a video hls playlist stream. + /// </summary> + /// <param name="itemId">The item id.</param> + /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param> + /// <param name="static">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.</param> + /// <param name="params">The streaming parameters.</param> + /// <param name="tag">The tag.</param> + /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param> + /// <param name="playSessionId">The play session id.</param> + /// <param name="segmentContainer">The segment container.</param> + /// <param name="segmentLength">The segment lenght.</param> + /// <param name="minSegments">The minimum number of segments.</param> + /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param> + /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param> + /// <param name="audioCodec">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.</param> + /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param> + /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param> + /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param> + /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param> + /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param> + /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param> + /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param> + /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param> + /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param> + /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param> + /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param> + /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param> + /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param> + /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param> + /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param> + /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param> + /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param> + /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param> + /// <param name="maxRefFrames">Optional.</param> + /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param> + /// <param name="requireAvc">Optional. Whether to require avc.</param> + /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param> + /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param> + /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param> + /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param> + /// <param name="liveStreamId">The live stream id.</param> + /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param> + /// <param name="videoCodec">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.</param> + /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param> + /// <param name="transcodingReasons">Optional. The transcoding reason.</param> + /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param> + /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param> + /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param> + /// <param name="streamOptions">Optional. The streaming options.</param> + /// <param name="enableAdaptiveBitrateStreaming">Enable adaptive bitrate streaming.</param> + /// <response code="200">Video stream returned.</response> + /// <returns>A <see cref="FileResult"/> containing the playlist file.</returns> + [HttpGet("Videos/{itemId}/master.m3u8")] + [HttpHead("Videos/{itemId}/master.m3u8", Name = "HeadMasterHlsVideoPlaylist")] + [ProducesResponseType(StatusCodes.Status200OK)] + public async Task<ActionResult> GetMasterHlsVideoPlaylist( + [FromRoute] Guid itemId, + [FromRoute] 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, Required] 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<string, string> streamOptions, + [FromQuery] bool enableAdaptiveBitrateStreaming = true) + { + var isHeadRequest = Request.Method == System.Net.WebRequestMethods.Http.Head; + var cancellationTokenSource = new CancellationTokenSource(); + var streamingRequest = new HlsVideoRequestDto + { + 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, + EnableAdaptiveBitrateStreaming = enableAdaptiveBitrateStreaming + }; + + return await GetMasterPlaylistInternal(streamingRequest, isHeadRequest, enableAdaptiveBitrateStreaming, cancellationTokenSource) + .ConfigureAwait(false); + } + + /// <summary> + /// Gets an audio hls playlist stream. + /// </summary> + /// <param name="itemId">The item id.</param> + /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param> + /// <param name="static">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.</param> + /// <param name="params">The streaming parameters.</param> + /// <param name="tag">The tag.</param> + /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param> + /// <param name="playSessionId">The play session id.</param> + /// <param name="segmentContainer">The segment container.</param> + /// <param name="segmentLength">The segment lenght.</param> + /// <param name="minSegments">The minimum number of segments.</param> + /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param> + /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param> + /// <param name="audioCodec">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.</param> + /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param> + /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param> + /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param> + /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param> + /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param> + /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param> + /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param> + /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param> + /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param> + /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param> + /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param> + /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param> + /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param> + /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param> + /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param> + /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param> + /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param> + /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param> + /// <param name="maxRefFrames">Optional.</param> + /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param> + /// <param name="requireAvc">Optional. Whether to require avc.</param> + /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param> + /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param> + /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param> + /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param> + /// <param name="liveStreamId">The live stream id.</param> + /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param> + /// <param name="videoCodec">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.</param> + /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param> + /// <param name="transcodingReasons">Optional. The transcoding reason.</param> + /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param> + /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param> + /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param> + /// <param name="streamOptions">Optional. The streaming options.</param> + /// <param name="enableAdaptiveBitrateStreaming">Enable adaptive bitrate streaming.</param> + /// <response code="200">Audio stream returned.</response> + /// <returns>A <see cref="FileResult"/> containing the playlist file.</returns> + [HttpGet("Audio/{itemId}/master.m3u8")] + [HttpHead("Audio/{itemId}/master.m3u8", Name = "HeadMasterHlsAudioPlaylist")] + [ProducesResponseType(StatusCodes.Status200OK)] + public async Task<ActionResult> GetMasterHlsAudioPlaylist( + [FromRoute] Guid itemId, + [FromRoute] 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, Required] 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<string, string> streamOptions, + [FromQuery] bool enableAdaptiveBitrateStreaming = true) + { + var isHeadRequest = Request.Method == System.Net.WebRequestMethods.Http.Head; + var cancellationTokenSource = new CancellationTokenSource(); + var streamingRequest = new HlsAudioRequestDto + { + 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, + EnableAdaptiveBitrateStreaming = enableAdaptiveBitrateStreaming + }; + + return await GetMasterPlaylistInternal(streamingRequest, isHeadRequest, enableAdaptiveBitrateStreaming, cancellationTokenSource) + .ConfigureAwait(false); + } + + /// <summary> + /// Gets a video stream using HTTP live streaming. + /// </summary> + /// <param name="itemId">The item id.</param> + /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param> + /// <param name="static">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.</param> + /// <param name="params">The streaming parameters.</param> + /// <param name="tag">The tag.</param> + /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param> + /// <param name="playSessionId">The play session id.</param> + /// <param name="segmentContainer">The segment container.</param> + /// <param name="segmentLength">The segment lenght.</param> + /// <param name="minSegments">The minimum number of segments.</param> + /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param> + /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param> + /// <param name="audioCodec">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.</param> + /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param> + /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param> + /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param> + /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param> + /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param> + /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param> + /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param> + /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param> + /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param> + /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param> + /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param> + /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param> + /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param> + /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param> + /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param> + /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param> + /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param> + /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param> + /// <param name="maxRefFrames">Optional.</param> + /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param> + /// <param name="requireAvc">Optional. Whether to require avc.</param> + /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param> + /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param> + /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param> + /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param> + /// <param name="liveStreamId">The live stream id.</param> + /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param> + /// <param name="videoCodec">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.</param> + /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param> + /// <param name="transcodingReasons">Optional. The transcoding reason.</param> + /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param> + /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param> + /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param> + /// <param name="streamOptions">Optional. The streaming options.</param> + /// <response code="200">Video stream returned.</response> + /// <returns>A <see cref="FileResult"/> containing the audio file.</returns> + [HttpGet("Videos/{itemId}/main.m3u8")] + [ProducesResponseType(StatusCodes.Status200OK)] + public async Task<ActionResult> GetVariantHlsVideoPlaylist( + [FromRoute] Guid itemId, + [FromRoute] 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<string, string> streamOptions) + { + var cancellationTokenSource = new CancellationTokenSource(); + var 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 + }; + + return await GetVariantPlaylistInternal(streamingRequest, "main", cancellationTokenSource) + .ConfigureAwait(false); + } + + /// <summary> + /// Gets an audio stream using HTTP live streaming. + /// </summary> + /// <param name="itemId">The item id.</param> + /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param> + /// <param name="static">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.</param> + /// <param name="params">The streaming parameters.</param> + /// <param name="tag">The tag.</param> + /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param> + /// <param name="playSessionId">The play session id.</param> + /// <param name="segmentContainer">The segment container.</param> + /// <param name="segmentLength">The segment lenght.</param> + /// <param name="minSegments">The minimum number of segments.</param> + /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param> + /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param> + /// <param name="audioCodec">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.</param> + /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param> + /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param> + /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param> + /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param> + /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param> + /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param> + /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param> + /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param> + /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param> + /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param> + /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param> + /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param> + /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param> + /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param> + /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param> + /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param> + /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param> + /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param> + /// <param name="maxRefFrames">Optional.</param> + /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param> + /// <param name="requireAvc">Optional. Whether to require avc.</param> + /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param> + /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param> + /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param> + /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param> + /// <param name="liveStreamId">The live stream id.</param> + /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param> + /// <param name="videoCodec">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.</param> + /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param> + /// <param name="transcodingReasons">Optional. The transcoding reason.</param> + /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param> + /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param> + /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param> + /// <param name="streamOptions">Optional. The streaming options.</param> + /// <response code="200">Audio stream returned.</response> + /// <returns>A <see cref="FileResult"/> containing the audio file.</returns> + [HttpGet("Audio/{itemId}/main.m3u8")] + [ProducesResponseType(StatusCodes.Status200OK)] + public async Task<ActionResult> GetVariantHlsAudioPlaylist( + [FromRoute] Guid itemId, + [FromRoute] 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<string, string> streamOptions) + { + var cancellationTokenSource = new CancellationTokenSource(); + var streamingRequest = new StreamingRequestDto + { + 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 + }; + + return await GetVariantPlaylistInternal(streamingRequest, "main", cancellationTokenSource) + .ConfigureAwait(false); + } + + /// <summary> + /// Gets a video stream using HTTP live streaming. + /// </summary> + /// <param name="itemId">The item id.</param> + /// <param name="playlistId">The playlist id.</param> + /// <param name="segmentId">The segment id.</param> + /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param> + /// <param name="static">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.</param> + /// <param name="params">The streaming parameters.</param> + /// <param name="tag">The tag.</param> + /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param> + /// <param name="playSessionId">The play session id.</param> + /// <param name="segmentContainer">The segment container.</param> + /// <param name="segmentLength">The segment lenght.</param> + /// <param name="minSegments">The minimum number of segments.</param> + /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param> + /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param> + /// <param name="audioCodec">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.</param> + /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param> + /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param> + /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param> + /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param> + /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param> + /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param> + /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param> + /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param> + /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param> + /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param> + /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param> + /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param> + /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param> + /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param> + /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param> + /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param> + /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param> + /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param> + /// <param name="maxRefFrames">Optional.</param> + /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param> + /// <param name="requireAvc">Optional. Whether to require avc.</param> + /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param> + /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param> + /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param> + /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param> + /// <param name="liveStreamId">The live stream id.</param> + /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param> + /// <param name="videoCodec">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.</param> + /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param> + /// <param name="transcodingReasons">Optional. The transcoding reason.</param> + /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param> + /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param> + /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param> + /// <param name="streamOptions">Optional. The streaming options.</param> + /// <response code="200">Video stream returned.</response> + /// <returns>A <see cref="FileResult"/> containing the audio file.</returns> + [HttpGet("Videos/{itemId}/hls1/{playlistId}/{segmentId}.{container}")] + [ProducesResponseType(StatusCodes.Status200OK)] + [SuppressMessage("Microsoft.Performance", "CA1801:ReviewUnusedParameters", MessageId = "playlistId", Justification = "Imported from ServiceStack")] + public async Task<ActionResult> GetHlsVideoSegment( + [FromRoute] Guid itemId, + [FromRoute] string playlistId, + [FromRoute] int segmentId, + [FromRoute] 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<string, string> streamOptions) + { + var 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 + }; + + return await GetDynamicSegment(streamingRequest, segmentId) + .ConfigureAwait(false); + } + + /// <summary> + /// Gets a video stream using HTTP live streaming. + /// </summary> + /// <param name="itemId">The item id.</param> + /// <param name="playlistId">The playlist id.</param> + /// <param name="segmentId">The segment id.</param> + /// <param name="container">The video container. Possible values are: ts, webm, asf, wmv, ogv, mp4, m4v, mkv, mpeg, mpg, avi, 3gp, wmv, wtv, m2ts, mov, iso, flv. </param> + /// <param name="static">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.</param> + /// <param name="params">The streaming parameters.</param> + /// <param name="tag">The tag.</param> + /// <param name="deviceProfileId">Optional. The dlna device profile id to utilize.</param> + /// <param name="playSessionId">The play session id.</param> + /// <param name="segmentContainer">The segment container.</param> + /// <param name="segmentLength">The segment lenght.</param> + /// <param name="minSegments">The minimum number of segments.</param> + /// <param name="mediaSourceId">The media version id, if playing an alternate version.</param> + /// <param name="deviceId">The device id of the client requesting. Used to stop encoding processes when needed.</param> + /// <param name="audioCodec">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.</param> + /// <param name="enableAutoStreamCopy">Whether or not to allow automatic stream copy if requested values match the original source. Defaults to true.</param> + /// <param name="allowVideoStreamCopy">Whether or not to allow copying of the video stream url.</param> + /// <param name="allowAudioStreamCopy">Whether or not to allow copying of the audio stream url.</param> + /// <param name="breakOnNonKeyFrames">Optional. Whether to break on non key frames.</param> + /// <param name="audioSampleRate">Optional. Specify a specific audio sample rate, e.g. 44100.</param> + /// <param name="maxAudioBitDepth">Optional. The maximum audio bit depth.</param> + /// <param name="audioBitRate">Optional. Specify an audio bitrate to encode to, e.g. 128000. If omitted this will be left to encoder defaults.</param> + /// <param name="audioChannels">Optional. Specify a specific number of audio channels to encode to, e.g. 2.</param> + /// <param name="maxAudioChannels">Optional. Specify a maximum number of audio channels to encode to, e.g. 2.</param> + /// <param name="profile">Optional. Specify a specific an encoder profile (varies by encoder), e.g. main, baseline, high.</param> + /// <param name="level">Optional. Specify a level for the encoder profile (varies by encoder), e.g. 3, 3.1.</param> + /// <param name="framerate">Optional. A specific video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="maxFramerate">Optional. A specific maximum video framerate to encode to, e.g. 23.976. Generally this should be omitted unless the device has specific requirements.</param> + /// <param name="copyTimestamps">Whether or not to copy timestamps when transcoding with an offset. Defaults to false.</param> + /// <param name="startTimeTicks">Optional. Specify a starting offset, in ticks. 1 tick = 10000 ms.</param> + /// <param name="width">Optional. The fixed horizontal resolution of the encoded video.</param> + /// <param name="height">Optional. The fixed vertical resolution of the encoded video.</param> + /// <param name="videoBitRate">Optional. Specify a video bitrate to encode to, e.g. 500000. If omitted this will be left to encoder defaults.</param> + /// <param name="subtitleStreamIndex">Optional. The index of the subtitle stream to use. If omitted no subtitles will be used.</param> + /// <param name="subtitleMethod">Optional. Specify the subtitle delivery method.</param> + /// <param name="maxRefFrames">Optional.</param> + /// <param name="maxVideoBitDepth">Optional. The maximum video bit depth.</param> + /// <param name="requireAvc">Optional. Whether to require avc.</param> + /// <param name="deInterlace">Optional. Whether to deinterlace the video.</param> + /// <param name="requireNonAnamorphic">Optional. Whether to require a non anamporphic stream.</param> + /// <param name="transcodingMaxAudioChannels">Optional. The maximum number of audio channels to transcode.</param> + /// <param name="cpuCoreLimit">Optional. The limit of how many cpu cores to use.</param> + /// <param name="liveStreamId">The live stream id.</param> + /// <param name="enableMpegtsM2TsMode">Optional. Whether to enable the MpegtsM2Ts mode.</param> + /// <param name="videoCodec">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.</param> + /// <param name="subtitleCodec">Optional. Specify a subtitle codec to encode to.</param> + /// <param name="transcodingReasons">Optional. The transcoding reason.</param> + /// <param name="audioStreamIndex">Optional. The index of the audio stream to use. If omitted the first audio stream will be used.</param> + /// <param name="videoStreamIndex">Optional. The index of the video stream to use. If omitted the first video stream will be used.</param> + /// <param name="context">Optional. The <see cref="EncodingContext"/>.</param> + /// <param name="streamOptions">Optional. The streaming options.</param> + /// <response code="200">Video stream returned.</response> + /// <returns>A <see cref="FileResult"/> containing the audio file.</returns> + [HttpGet("Audio/{itemId}/hls1/{playlistId}/{segmentId}.{container}")] + [ProducesResponseType(StatusCodes.Status200OK)] + [SuppressMessage("Microsoft.Performance", "CA1801:ReviewUnusedParameters", MessageId = "playlistId", Justification = "Imported from ServiceStack")] + public async Task<ActionResult> GetHlsAudioSegment( + [FromRoute] Guid itemId, + [FromRoute] string playlistId, + [FromRoute] int segmentId, + [FromRoute] 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<string, string> streamOptions) + { + var streamingRequest = new StreamingRequestDto + { + 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 + }; + + return await GetDynamicSegment(streamingRequest, segmentId) + .ConfigureAwait(false); + } + + private async Task<ActionResult> GetMasterPlaylistInternal( + StreamingRequestDto streamingRequest, + bool isHeadRequest, + bool enableAdaptiveBitrateStreaming, + CancellationTokenSource cancellationTokenSource) + { + using var state = await StreamingHelpers.GetStreamingState( + streamingRequest, + Request, + _authContext, + _mediaSourceManager, + _userManager, + _libraryManager, + _serverConfigurationManager, + _mediaEncoder, + _fileSystem, + _subtitleEncoder, + _configuration, + _dlnaManager, + _deviceManager, + _transcodingJobHelper, + _transcodingJobType, + cancellationTokenSource.Token) + .ConfigureAwait(false); + + Response.Headers.Add(HeaderNames.Expires, "0"); + if (isHeadRequest) + { + return new FileContentResult(Array.Empty<byte>(), MimeTypes.GetMimeType("playlist.m3u8")); + } + + var totalBitrate = state.OutputAudioBitrate ?? 0 + state.OutputVideoBitrate ?? 0; + + var builder = new StringBuilder(); + + builder.AppendLine("#EXTM3U"); + + var isLiveStream = state.IsSegmentedLiveStream; + + var queryString = Request.QueryString.ToString(); + + // from universal audio service + if (queryString.IndexOf("SegmentContainer", StringComparison.OrdinalIgnoreCase) == -1 && !string.IsNullOrWhiteSpace(state.Request.SegmentContainer)) + { + queryString += "&SegmentContainer=" + state.Request.SegmentContainer; + } + + // from universal audio service + if (!string.IsNullOrWhiteSpace(state.Request.TranscodeReasons) && queryString.IndexOf("TranscodeReasons=", StringComparison.OrdinalIgnoreCase) == -1) + { + queryString += "&TranscodeReasons=" + state.Request.TranscodeReasons; + } + + // Main stream + var playlistUrl = isLiveStream ? "live.m3u8" : "main.m3u8"; + + playlistUrl += queryString; + + var subtitleStreams = state.MediaSource + .MediaStreams + .Where(i => i.IsTextSubtitleStream) + .ToList(); + + var subtitleGroup = subtitleStreams.Count > 0 && (state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Hls || state.VideoRequest!.EnableSubtitlesInManifest) + ? "subs" + : null; + + // If we're burning in subtitles then don't add additional subs to the manifest + if (state.SubtitleStream != null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode) + { + subtitleGroup = null; + } + + if (!string.IsNullOrWhiteSpace(subtitleGroup)) + { + AddSubtitles(state, subtitleStreams, builder); + } + + AppendPlaylist(builder, state, playlistUrl, totalBitrate, subtitleGroup); + + if (EnableAdaptiveBitrateStreaming(state, isLiveStream, enableAdaptiveBitrateStreaming)) + { + var requestedVideoBitrate = state.VideoRequest == null ? 0 : state.VideoRequest.VideoBitRate ?? 0; + + // By default, vary by just 200k + var variation = GetBitrateVariation(totalBitrate); + + var newBitrate = totalBitrate - variation; + var variantUrl = ReplaceBitrate(playlistUrl, requestedVideoBitrate, requestedVideoBitrate - variation); + AppendPlaylist(builder, state, variantUrl, newBitrate, subtitleGroup); + + variation *= 2; + newBitrate = totalBitrate - variation; + variantUrl = ReplaceBitrate(playlistUrl, requestedVideoBitrate, requestedVideoBitrate - variation); + AppendPlaylist(builder, state, variantUrl, newBitrate, subtitleGroup); + } + + return new FileContentResult(Encoding.UTF8.GetBytes(builder.ToString()), MimeTypes.GetMimeType("playlist.m3u8")); + } + + private async Task<ActionResult> GetVariantPlaylistInternal(StreamingRequestDto streamingRequest, string name, CancellationTokenSource cancellationTokenSource) + { + using var state = await StreamingHelpers.GetStreamingState( + streamingRequest, + Request, + _authContext, + _mediaSourceManager, + _userManager, + _libraryManager, + _serverConfigurationManager, + _mediaEncoder, + _fileSystem, + _subtitleEncoder, + _configuration, + _dlnaManager, + _deviceManager, + _transcodingJobHelper, + _transcodingJobType, + cancellationTokenSource.Token) + .ConfigureAwait(false); + + Response.Headers.Add(HeaderNames.Expires, "0"); + + var segmentLengths = GetSegmentLengths(state); + + var builder = new StringBuilder(); + + builder.AppendLine("#EXTM3U"); + builder.AppendLine("#EXT-X-PLAYLIST-TYPE:VOD"); + builder.AppendLine("#EXT-X-VERSION:3"); + builder.AppendLine("#EXT-X-TARGETDURATION:" + Math.Ceiling(segmentLengths.Length > 0 ? segmentLengths.Max() : state.SegmentLength).ToString(CultureInfo.InvariantCulture)); + builder.AppendLine("#EXT-X-MEDIA-SEQUENCE:0"); + + var queryString = Request.QueryString; + var index = 0; + + var segmentExtension = GetSegmentFileExtension(streamingRequest.SegmentContainer); + + foreach (var length in segmentLengths) + { + builder.AppendLine("#EXTINF:" + length.ToString("0.0000", CultureInfo.InvariantCulture) + ", nodesc"); + builder.AppendLine( + string.Format( + CultureInfo.InvariantCulture, + "hls1/{0}/{1}{2}{3}", + name, + index.ToString(CultureInfo.InvariantCulture), + segmentExtension, + queryString)); + + index++; + } + + builder.AppendLine("#EXT-X-ENDLIST"); + return new FileContentResult(Encoding.UTF8.GetBytes(builder.ToString()), MimeTypes.GetMimeType("playlist.m3u8")); + } + + private async Task<ActionResult> GetDynamicSegment(StreamingRequestDto streamingRequest, int segmentId) + { + if ((streamingRequest.StartTimeTicks ?? 0) > 0) + { + throw new ArgumentException("StartTimeTicks is not allowed."); + } + + var cancellationTokenSource = new CancellationTokenSource(); + var cancellationToken = cancellationTokenSource.Token; + + using var state = await StreamingHelpers.GetStreamingState( + streamingRequest, + Request, + _authContext, + _mediaSourceManager, + _userManager, + _libraryManager, + _serverConfigurationManager, + _mediaEncoder, + _fileSystem, + _subtitleEncoder, + _configuration, + _dlnaManager, + _deviceManager, + _transcodingJobHelper, + _transcodingJobType, + cancellationTokenSource.Token) + .ConfigureAwait(false); + + var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8"); + + var segmentPath = GetSegmentPath(state, playlistPath, segmentId); + + var segmentExtension = GetSegmentFileExtension(state.Request.SegmentContainer); + + TranscodingJobDto? job; + + if (System.IO.File.Exists(segmentPath)) + { + job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType); + _logger.LogDebug("returning {0} [it exists, try 1]", segmentPath); + return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, segmentId, job, cancellationToken).ConfigureAwait(false); + } + + var transcodingLock = _transcodingJobHelper.GetTranscodingLock(playlistPath); + await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false); + var released = false; + var startTranscoding = false; + + try + { + if (System.IO.File.Exists(segmentPath)) + { + job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType); + transcodingLock.Release(); + released = true; + _logger.LogDebug("returning {0} [it exists, try 2]", segmentPath); + return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, segmentId, job, cancellationToken).ConfigureAwait(false); + } + else + { + var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension); + var segmentGapRequiringTranscodingChange = 24 / state.SegmentLength; + + if (currentTranscodingIndex == null) + { + _logger.LogDebug("Starting transcoding because currentTranscodingIndex=null"); + startTranscoding = true; + } + else if (segmentId < currentTranscodingIndex.Value) + { + _logger.LogDebug("Starting transcoding because requestedIndex={0} and currentTranscodingIndex={1}", segmentId, currentTranscodingIndex); + startTranscoding = true; + } + else if (segmentId - currentTranscodingIndex.Value > segmentGapRequiringTranscodingChange) + { + _logger.LogDebug("Starting transcoding because segmentGap is {0} and max allowed gap is {1}. requestedIndex={2}", segmentId - currentTranscodingIndex.Value, segmentGapRequiringTranscodingChange, segmentId); + startTranscoding = true; + } + + if (startTranscoding) + { + // If the playlist doesn't already exist, startup ffmpeg + try + { + await _transcodingJobHelper.KillTranscodingJobs(streamingRequest.DeviceId, streamingRequest.PlaySessionId, p => false) + .ConfigureAwait(false); + + if (currentTranscodingIndex.HasValue) + { + DeleteLastFile(playlistPath, segmentExtension, 0); + } + + streamingRequest.StartTimeTicks = GetStartPositionTicks(state, segmentId); + + state.WaitForPath = segmentPath; + var encodingOptions = _serverConfigurationManager.GetEncodingOptions(); + job = await _transcodingJobHelper.StartFfMpeg( + state, + playlistPath, + GetCommandLineArguments(playlistPath, encodingOptions, state, true, segmentId), + Request, + _transcodingJobType, + cancellationTokenSource).ConfigureAwait(false); + } + catch + { + state.Dispose(); + throw; + } + + // await WaitForMinimumSegmentCount(playlistPath, 1, cancellationTokenSource.Token).ConfigureAwait(false); + } + else + { + job = _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType); + if (job?.TranscodingThrottler != null) + { + await job.TranscodingThrottler.UnpauseTranscoding().ConfigureAwait(false); + } + } + } + } + finally + { + if (!released) + { + transcodingLock.Release(); + } + } + + _logger.LogDebug("returning {0} [general case]", segmentPath); + job ??= _transcodingJobHelper.OnTranscodeBeginRequest(playlistPath, _transcodingJobType); + return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, segmentId, job, cancellationToken).ConfigureAwait(false); + } + + private void AddSubtitles(StreamState state, IEnumerable<MediaStream> subtitles, StringBuilder builder) + { + var selectedIndex = state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index; + const string Format = "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"subs\",NAME=\"{0}\",DEFAULT={1},FORCED={2},AUTOSELECT=YES,URI=\"{3}\",LANGUAGE=\"{4}\""; + + foreach (var stream in subtitles) + { + var name = stream.DisplayTitle; + + var isDefault = selectedIndex.HasValue && selectedIndex.Value == stream.Index; + var isForced = stream.IsForced; + + var url = string.Format( + CultureInfo.InvariantCulture, + "{0}/Subtitles/{1}/subtitles.m3u8?SegmentLength={2}&api_key={3}", + state.Request.MediaSourceId, + stream.Index.ToString(CultureInfo.InvariantCulture), + 30.ToString(CultureInfo.InvariantCulture), + ClaimHelpers.GetToken(Request.HttpContext.User)); + + var line = string.Format( + CultureInfo.InvariantCulture, + Format, + name, + isDefault ? "YES" : "NO", + isForced ? "YES" : "NO", + url, + stream.Language ?? "Unknown"); + + builder.AppendLine(line); + } + } + + private void AppendPlaylist(StringBuilder builder, StreamState state, string url, int bitrate, string? subtitleGroup) + { + builder.Append("#EXT-X-STREAM-INF:BANDWIDTH=") + .Append(bitrate.ToString(CultureInfo.InvariantCulture)) + .Append(",AVERAGE-BANDWIDTH=") + .Append(bitrate.ToString(CultureInfo.InvariantCulture)); + + AppendPlaylistCodecsField(builder, state); + + AppendPlaylistResolutionField(builder, state); + + AppendPlaylistFramerateField(builder, state); + + if (!string.IsNullOrWhiteSpace(subtitleGroup)) + { + builder.Append(",SUBTITLES=\"") + .Append(subtitleGroup) + .Append('"'); + } + + builder.Append(Environment.NewLine); + builder.AppendLine(url); + } + + /// <summary> + /// Appends a CODECS field containing formatted strings of + /// the active streams output video and audio codecs. + /// </summary> + /// <seealso cref="AppendPlaylist(StringBuilder, StreamState, string, int, string)"/> + /// <seealso cref="GetPlaylistVideoCodecs(StreamState, string, int)"/> + /// <seealso cref="GetPlaylistAudioCodecs(StreamState)"/> + /// <param name="builder">StringBuilder to append the field to.</param> + /// <param name="state">StreamState of the current stream.</param> + private void AppendPlaylistCodecsField(StringBuilder builder, StreamState state) + { + // Video + string videoCodecs = string.Empty; + int? videoCodecLevel = GetOutputVideoCodecLevel(state); + if (!string.IsNullOrEmpty(state.ActualOutputVideoCodec) && videoCodecLevel.HasValue) + { + videoCodecs = GetPlaylistVideoCodecs(state, state.ActualOutputVideoCodec, videoCodecLevel.Value); + } + + // Audio + string audioCodecs = string.Empty; + if (!string.IsNullOrEmpty(state.ActualOutputAudioCodec)) + { + audioCodecs = GetPlaylistAudioCodecs(state); + } + + StringBuilder codecs = new StringBuilder(); + + codecs.Append(videoCodecs) + .Append(',') + .Append(audioCodecs); + + if (codecs.Length > 1) + { + builder.Append(",CODECS=\"") + .Append(codecs) + .Append('"'); + } + } + + /// <summary> + /// Appends a RESOLUTION field containing the resolution of the output stream. + /// </summary> + /// <seealso cref="AppendPlaylist(StringBuilder, StreamState, string, int, string)"/> + /// <param name="builder">StringBuilder to append the field to.</param> + /// <param name="state">StreamState of the current stream.</param> + private void AppendPlaylistResolutionField(StringBuilder builder, StreamState state) + { + if (state.OutputWidth.HasValue && state.OutputHeight.HasValue) + { + builder.Append(",RESOLUTION=") + .Append(state.OutputWidth.GetValueOrDefault()) + .Append('x') + .Append(state.OutputHeight.GetValueOrDefault()); + } + } + + /// <summary> + /// Appends a FRAME-RATE field containing the framerate of the output stream. + /// </summary> + /// <seealso cref="AppendPlaylist(StringBuilder, StreamState, string, int, string)"/> + /// <param name="builder">StringBuilder to append the field to.</param> + /// <param name="state">StreamState of the current stream.</param> + private void AppendPlaylistFramerateField(StringBuilder builder, StreamState state) + { + double? framerate = null; + if (state.TargetFramerate.HasValue) + { + framerate = Math.Round(state.TargetFramerate.GetValueOrDefault(), 3); + } + else if (state.VideoStream?.RealFrameRate != null) + { + framerate = Math.Round(state.VideoStream.RealFrameRate.GetValueOrDefault(), 3); + } + + if (framerate.HasValue) + { + builder.Append(",FRAME-RATE=") + .Append(framerate.Value); + } + } + + private bool EnableAdaptiveBitrateStreaming(StreamState state, bool isLiveStream, bool enableAdaptiveBitrateStreaming) + { + // Within the local network this will likely do more harm than good. + var ip = RequestHelpers.NormalizeIp(Request.HttpContext.Connection.RemoteIpAddress).ToString(); + if (_networkManager.IsInLocalNetwork(ip)) + { + return false; + } + + if (!enableAdaptiveBitrateStreaming) + { + return false; + } + + if (isLiveStream || string.IsNullOrWhiteSpace(state.MediaPath)) + { + // Opening live streams is so slow it's not even worth it + return false; + } + + if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec)) + { + return false; + } + + if (EncodingHelper.IsCopyCodec(state.OutputAudioCodec)) + { + return false; + } + + if (!state.IsOutputVideo) + { + return false; + } + + // Having problems in android + return false; + // return state.VideoRequest.VideoBitRate.HasValue; + } + + /// <summary> + /// Get the H.26X level of the output video stream. + /// </summary> + /// <param name="state">StreamState of the current stream.</param> + /// <returns>H.26X level of the output video stream.</returns> + private int? GetOutputVideoCodecLevel(StreamState state) + { + string? levelString; + if (EncodingHelper.IsCopyCodec(state.OutputVideoCodec) + && state.VideoStream.Level.HasValue) + { + levelString = state.VideoStream?.Level.ToString(); + } + else + { + levelString = state.GetRequestedLevel(state.ActualOutputVideoCodec); + } + + if (int.TryParse(levelString, NumberStyles.Integer, CultureInfo.InvariantCulture, out var parsedLevel)) + { + return parsedLevel; + } + + return null; + } + + /// <summary> + /// Gets a formatted string of the output audio codec, for use in the CODECS field. + /// </summary> + /// <seealso cref="AppendPlaylistCodecsField(StringBuilder, StreamState)"/> + /// <seealso cref="GetPlaylistVideoCodecs(StreamState, string, int)"/> + /// <param name="state">StreamState of the current stream.</param> + /// <returns>Formatted audio codec string.</returns> + private string GetPlaylistAudioCodecs(StreamState state) + { + if (string.Equals(state.ActualOutputAudioCodec, "aac", StringComparison.OrdinalIgnoreCase)) + { + string? profile = state.GetRequestedProfiles("aac").FirstOrDefault(); + return HlsCodecStringHelpers.GetAACString(profile); + } + + if (string.Equals(state.ActualOutputAudioCodec, "mp3", StringComparison.OrdinalIgnoreCase)) + { + return HlsCodecStringHelpers.GetMP3String(); + } + + if (string.Equals(state.ActualOutputAudioCodec, "ac3", StringComparison.OrdinalIgnoreCase)) + { + return HlsCodecStringHelpers.GetAC3String(); + } + + if (string.Equals(state.ActualOutputAudioCodec, "eac3", StringComparison.OrdinalIgnoreCase)) + { + return HlsCodecStringHelpers.GetEAC3String(); + } + + return string.Empty; + } + + /// <summary> + /// Gets a formatted string of the output video codec, for use in the CODECS field. + /// </summary> + /// <seealso cref="AppendPlaylistCodecsField(StringBuilder, StreamState)"/> + /// <seealso cref="GetPlaylistAudioCodecs(StreamState)"/> + /// <param name="state">StreamState of the current stream.</param> + /// <param name="codec">Video codec.</param> + /// <param name="level">Video level.</param> + /// <returns>Formatted video codec string.</returns> + private string GetPlaylistVideoCodecs(StreamState state, string codec, int level) + { + if (level == 0) + { + // This is 0 when there's no requested H.26X level in the device profile + // and the source is not encoded in H.26X + _logger.LogError("Got invalid H.26X level when building CODECS field for HLS master playlist"); + return string.Empty; + } + + if (string.Equals(codec, "h264", StringComparison.OrdinalIgnoreCase)) + { + string profile = state.GetRequestedProfiles("h264").FirstOrDefault(); + return HlsCodecStringHelpers.GetH264String(profile, level); + } + + if (string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase) + || string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase)) + { + string profile = state.GetRequestedProfiles("h265").FirstOrDefault(); + + return HlsCodecStringHelpers.GetH265String(profile, level); + } + + return string.Empty; + } + + private int GetBitrateVariation(int bitrate) + { + // By default, vary by just 50k + var variation = 50000; + + if (bitrate >= 10000000) + { + variation = 2000000; + } + else if (bitrate >= 5000000) + { + variation = 1500000; + } + else if (bitrate >= 3000000) + { + variation = 1000000; + } + else if (bitrate >= 2000000) + { + variation = 500000; + } + else if (bitrate >= 1000000) + { + variation = 300000; + } + else if (bitrate >= 600000) + { + variation = 200000; + } + else if (bitrate >= 400000) + { + variation = 100000; + } + + return variation; + } + + private string ReplaceBitrate(string url, int oldValue, int newValue) + { + return url.Replace( + "videobitrate=" + oldValue.ToString(CultureInfo.InvariantCulture), + "videobitrate=" + newValue.ToString(CultureInfo.InvariantCulture), + StringComparison.OrdinalIgnoreCase); + } + + private double[] GetSegmentLengths(StreamState state) + { + var result = new List<double>(); + + var ticks = state.RunTimeTicks ?? 0; + + var segmentLengthTicks = TimeSpan.FromSeconds(state.SegmentLength).Ticks; + + while (ticks > 0) + { + var length = ticks >= segmentLengthTicks ? segmentLengthTicks : ticks; + + result.Add(TimeSpan.FromTicks(length).TotalSeconds); + + ticks -= length; + } + + return result.ToArray(); + } + + private string GetCommandLineArguments(string outputPath, EncodingOptions encodingOptions, StreamState state, bool isEncoding, int startNumber) + { + var videoCodec = _encodingHelper.GetVideoEncoder(state, encodingOptions); + + var threads = _encodingHelper.GetNumberOfThreads(state, encodingOptions, videoCodec); + + if (state.BaseRequest.BreakOnNonKeyFrames) + { + // FIXME: this is actually a workaround, as ideally it really should be the client which decides whether non-keyframe + // breakpoints are supported; but current implementation always uses "ffmpeg input seeking" which is liable + // to produce a missing part of video stream before first keyframe is encountered, which may lead to + // awkward cases like a few starting HLS segments having no video whatsoever, which breaks hls.js + _logger.LogInformation("Current HLS implementation doesn't support non-keyframe breaks but one is requested, ignoring that request"); + state.BaseRequest.BreakOnNonKeyFrames = false; + } + + var inputModifier = _encodingHelper.GetInputModifier(state, encodingOptions); + + // If isEncoding is true we're actually starting ffmpeg + var startNumberParam = isEncoding ? startNumber.ToString(CultureInfo.InvariantCulture) : "0"; + + var mapArgs = state.IsOutputVideo ? _encodingHelper.GetMapArgs(state) : string.Empty; + + var outputTsArg = Path.Combine(Path.GetDirectoryName(outputPath), Path.GetFileNameWithoutExtension(outputPath)) + "%d" + GetSegmentFileExtension(state.Request.SegmentContainer); + + var segmentFormat = GetSegmentFileExtension(state.Request.SegmentContainer).TrimStart('.'); + if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase)) + { + segmentFormat = "mpegts"; + } + + return string.Format( + CultureInfo.InvariantCulture, + "{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -copyts -avoid_negative_ts disabled -f hls -max_delay 5000000 -hls_time {6} -individual_header_trailer 0 -hls_segment_type {7} -start_number {8} -hls_segment_filename \"{9}\" -hls_playlist_type vod -hls_list_size 0 -y \"{10}\"", + inputModifier, + _encodingHelper.GetInputArgument(state, encodingOptions), + threads, + mapArgs, + GetVideoArguments(state, encodingOptions, startNumber), + GetAudioArguments(state, encodingOptions), + state.SegmentLength.ToString(CultureInfo.InvariantCulture), + segmentFormat, + startNumberParam, + outputTsArg, + outputPath).Trim(); + } + + private string GetAudioArguments(StreamState state, EncodingOptions encodingOptions) + { + var audioCodec = _encodingHelper.GetAudioEncoder(state); + + if (!state.IsOutputVideo) + { + if (EncodingHelper.IsCopyCodec(audioCodec)) + { + return "-acodec copy"; + } + + var audioTranscodeParams = new List<string>(); + + audioTranscodeParams.Add("-acodec " + audioCodec); + + if (state.OutputAudioBitrate.HasValue) + { + audioTranscodeParams.Add("-ab " + state.OutputAudioBitrate.Value.ToString(CultureInfo.InvariantCulture)); + } + + if (state.OutputAudioChannels.HasValue) + { + audioTranscodeParams.Add("-ac " + state.OutputAudioChannels.Value.ToString(CultureInfo.InvariantCulture)); + } + + if (state.OutputAudioSampleRate.HasValue) + { + audioTranscodeParams.Add("-ar " + state.OutputAudioSampleRate.Value.ToString(CultureInfo.InvariantCulture)); + } + + audioTranscodeParams.Add("-vn"); + return string.Join(' ', audioTranscodeParams); + } + + if (EncodingHelper.IsCopyCodec(audioCodec)) + { + var videoCodec = _encodingHelper.GetVideoEncoder(state, encodingOptions); + + if (EncodingHelper.IsCopyCodec(videoCodec) && state.EnableBreakOnNonKeyFrames(videoCodec)) + { + return "-codec:a:0 copy -copypriorss:a:0 0"; + } + + return "-codec:a:0 copy"; + } + + var args = "-codec:a:0 " + audioCodec; + + 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; + } + + private string GetVideoArguments(StreamState state, EncodingOptions encodingOptions, int startNumber) + { + 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 (EncodingHelper.IsCopyCodec(codec)) + { + if (state.VideoStream != null && !string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase)) + { + string bitStreamArgs = _encodingHelper.GetBitStreamArgs(state.VideoStream); + if (!string.IsNullOrEmpty(bitStreamArgs)) + { + args += " " + bitStreamArgs; + } + } + + // args += " -flags -global_header"; + } + else + { + var gopArg = string.Empty; + var keyFrameArg = string.Format( + CultureInfo.InvariantCulture, + " -force_key_frames:0 \"expr:gte(t,{0}+n_forced*{1})\"", + startNumber * state.SegmentLength, + state.SegmentLength); + + var framerate = state.VideoStream?.RealFrameRate; + + if (framerate.HasValue) + { + // This is to make sure keyframe interval is limited to our segment, + // as forcing keyframes is not enough. + // Example: we encoded half of desired length, then codec detected + // scene cut and inserted a keyframe; next forced keyframe would + // be created outside of segment, which breaks seeking + // -sc_threshold 0 is used to prevent the hardware encoder from post processing to break the set keyframe + gopArg = string.Format( + CultureInfo.InvariantCulture, + " -g {0} -keyint_min {0} -sc_threshold 0", + Math.Ceiling(state.SegmentLength * framerate.Value)); + } + + args += " " + _encodingHelper.GetVideoQualityParam(state, codec, encodingOptions, "veryfast"); + + // Unable to force key frames using these hw encoders, set key frames by GOP + if (string.Equals(codec, "h264_qsv", StringComparison.OrdinalIgnoreCase) + || string.Equals(codec, "h264_nvenc", StringComparison.OrdinalIgnoreCase) + || string.Equals(codec, "h264_amf", StringComparison.OrdinalIgnoreCase)) + { + args += " " + gopArg; + } + else + { + args += " " + keyFrameArg + gopArg; + } + + // args += " -mixed-refs 0 -refs 3 -x264opts b_pyramid=0:weightb=0:weightp=0"; + + var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode; + + // This is for graphical subs + if (hasGraphicalSubs) + { + args += _encodingHelper.GetGraphicalSubtitleParam(state, encodingOptions, codec); + } + + // Add resolution params, if specified + else + { + args += _encodingHelper.GetOutputSizeParam(state, encodingOptions, codec); + } + + // -start_at_zero is necessary to use with -ss when seeking, + // otherwise the target position cannot be determined. + if (!(state.SubtitleStream != null && state.SubtitleStream.IsExternal && !state.SubtitleStream.IsTextSubtitleStream)) + { + args += " -start_at_zero"; + } + + // args += " -flags -global_header"; + } + + if (!string.IsNullOrEmpty(state.OutputVideoSync)) + { + args += " -vsync " + state.OutputVideoSync; + } + + args += _encodingHelper.GetOutputFFlags(state); + + return args; + } + + private string GetSegmentFileExtension(string? segmentContainer) + { + if (!string.IsNullOrWhiteSpace(segmentContainer)) + { + return "." + segmentContainer; + } + + return ".ts"; + } + + private string GetSegmentPath(StreamState state, string playlist, int index) + { + var folder = Path.GetDirectoryName(playlist); + + var filename = Path.GetFileNameWithoutExtension(playlist); + + return Path.Combine(folder, filename + index.ToString(CultureInfo.InvariantCulture) + GetSegmentFileExtension(state.Request.SegmentContainer)); + } + + private async Task<ActionResult> GetSegmentResult( + StreamState state, + string playlistPath, + string segmentPath, + string segmentExtension, + int segmentIndex, + TranscodingJobDto? transcodingJob, + CancellationToken cancellationToken) + { + var segmentExists = System.IO.File.Exists(segmentPath); + if (segmentExists) + { + if (transcodingJob != null && transcodingJob.HasExited) + { + // Transcoding job is over, so assume all existing files are ready + _logger.LogDebug("serving up {0} as transcode is over", segmentPath); + return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob); + } + + var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension); + + // If requested segment is less than transcoding position, we can't transcode backwards, so assume it's ready + if (segmentIndex < currentTranscodingIndex) + { + _logger.LogDebug("serving up {0} as transcode index {1} is past requested point {2}", segmentPath, currentTranscodingIndex, segmentIndex); + return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob); + } + } + + var nextSegmentPath = GetSegmentPath(state, playlistPath, segmentIndex + 1); + if (transcodingJob != null) + { + while (!cancellationToken.IsCancellationRequested && !transcodingJob.HasExited) + { + // To be considered ready, the segment file has to exist AND + // either the transcoding job should be done or next segment should also exist + if (segmentExists) + { + if (transcodingJob.HasExited || System.IO.File.Exists(nextSegmentPath)) + { + _logger.LogDebug("serving up {0} as it deemed ready", segmentPath); + return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob); + } + } + else + { + segmentExists = System.IO.File.Exists(segmentPath); + if (segmentExists) + { + continue; // avoid unnecessary waiting if segment just became available + } + } + + await Task.Delay(100, cancellationToken).ConfigureAwait(false); + } + + if (!System.IO.File.Exists(segmentPath)) + { + _logger.LogWarning("cannot serve {0} as transcoding quit before we got there", segmentPath); + } + else + { + _logger.LogDebug("serving {0} as it's on disk and transcoding stopped", segmentPath); + } + + cancellationToken.ThrowIfCancellationRequested(); + } + else + { + _logger.LogWarning("cannot serve {0} as it doesn't exist and no transcode is running", segmentPath); + } + + return GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob); + } + + private ActionResult GetSegmentResult(StreamState state, string segmentPath, int index, TranscodingJobDto? transcodingJob) + { + var segmentEndingPositionTicks = GetEndPositionTicks(state, index); + + Response.OnCompleted(() => + { + _logger.LogDebug("finished serving {0}", segmentPath); + if (transcodingJob != null) + { + transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks); + _transcodingJobHelper.OnTranscodeEndRequest(transcodingJob); + } + + return Task.CompletedTask; + }); + + return FileStreamResponseHelpers.GetStaticFileResult(segmentPath, MimeTypes.GetMimeType(segmentPath)!, false, this); + } + + private long GetEndPositionTicks(StreamState state, int requestedIndex) + { + double startSeconds = 0; + var lengths = GetSegmentLengths(state); + + if (requestedIndex >= lengths.Length) + { + var msg = string.Format( + CultureInfo.InvariantCulture, + "Invalid segment index requested: {0} - Segment count: {1}", + requestedIndex, + lengths.Length); + throw new ArgumentException(msg); + } + + for (var i = 0; i <= requestedIndex; i++) + { + startSeconds += lengths[i]; + } + + return TimeSpan.FromSeconds(startSeconds).Ticks; + } + + private int? GetCurrentTranscodingIndex(string playlist, string segmentExtension) + { + var job = _transcodingJobHelper.GetTranscodingJob(playlist, _transcodingJobType); + + if (job == null || job.HasExited) + { + return null; + } + + var file = GetLastTranscodingFile(playlist, segmentExtension, _fileSystem); + + if (file == null) + { + return null; + } + + var playlistFilename = Path.GetFileNameWithoutExtension(playlist); + + var indexString = Path.GetFileNameWithoutExtension(file.Name).Substring(playlistFilename.Length); + + return int.Parse(indexString, NumberStyles.Integer, CultureInfo.InvariantCulture); + } + + private static FileSystemMetadata? GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem) + { + var folder = Path.GetDirectoryName(playlist); + + var filePrefix = Path.GetFileNameWithoutExtension(playlist) ?? string.Empty; + + try + { + return fileSystem.GetFiles(folder, new[] { segmentExtension }, true, false) + .Where(i => Path.GetFileNameWithoutExtension(i.Name).StartsWith(filePrefix, StringComparison.OrdinalIgnoreCase)) + .OrderByDescending(fileSystem.GetLastWriteTimeUtc) + .FirstOrDefault(); + } + catch (IOException) + { + return null; + } + } + + private void DeleteLastFile(string playlistPath, string segmentExtension, int retryCount) + { + var file = GetLastTranscodingFile(playlistPath, segmentExtension, _fileSystem); + + if (file != null) + { + DeleteFile(file.FullName, retryCount); + } + } + + private void DeleteFile(string path, int retryCount) + { + if (retryCount >= 5) + { + return; + } + + _logger.LogDebug("Deleting partial HLS file {path}", path); + + try + { + _fileSystem.DeleteFile(path); + } + catch (IOException ex) + { + _logger.LogError(ex, "Error deleting partial stream file(s) {path}", path); + + var task = Task.Delay(100); + Task.WaitAll(task); + DeleteFile(path, retryCount + 1); + } + catch (Exception ex) + { + _logger.LogError(ex, "Error deleting partial stream file(s) {path}", path); + } + } + + private long GetStartPositionTicks(StreamState state, int requestedIndex) + { + double startSeconds = 0; + var lengths = GetSegmentLengths(state); + + if (requestedIndex >= lengths.Length) + { + var msg = string.Format( + CultureInfo.InvariantCulture, + "Invalid segment index requested: {0} - Segment count: {1}", + requestedIndex, + lengths.Length); + throw new ArgumentException(msg); + } + + for (var i = 0; i < requestedIndex; i++) + { + startSeconds += lengths[i]; + } + + var position = TimeSpan.FromSeconds(startSeconds).Ticks; + return position; + } + } +} |