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@@ -1,1226 +0,0 @@
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-using System;
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-using System.Collections.Generic;
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-using System.Globalization;
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-using System.IO;
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-using System.Linq;
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-using System.Text;
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-using System.Threading;
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-using System.Threading.Tasks;
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-using MediaBrowser.Common.Net;
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-using MediaBrowser.Controller.Configuration;
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-using MediaBrowser.Controller.Devices;
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-using MediaBrowser.Controller.Dlna;
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-using MediaBrowser.Controller.Library;
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-using MediaBrowser.Controller.MediaEncoding;
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-using MediaBrowser.Controller.Net;
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-using MediaBrowser.Model.Configuration;
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-using MediaBrowser.Model.Dlna;
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-using MediaBrowser.Model.Entities;
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-using MediaBrowser.Model.IO;
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-using MediaBrowser.Model.Serialization;
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-using MediaBrowser.Model.Services;
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-using Microsoft.Extensions.Logging;
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-using MimeTypes = MediaBrowser.Model.Net.MimeTypes;
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-
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-namespace MediaBrowser.Api.Playback.Hls
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-{
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- /// <summary>
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- /// Options is needed for chromecast. Threw Head in there since it's related
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- /// </summary>
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- public class GetMasterHlsVideoPlaylist : VideoStreamRequest, IMasterHlsRequest
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- {
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- public bool EnableAdaptiveBitrateStreaming { get; set; }
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-
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- public GetMasterHlsVideoPlaylist()
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- {
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- EnableAdaptiveBitrateStreaming = true;
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- }
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- }
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-
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- public class GetMasterHlsAudioPlaylist : StreamRequest, IMasterHlsRequest
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- {
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- public bool EnableAdaptiveBitrateStreaming { get; set; }
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-
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- public GetMasterHlsAudioPlaylist()
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- {
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- EnableAdaptiveBitrateStreaming = true;
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- }
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- }
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-
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- public interface IMasterHlsRequest
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- {
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- bool EnableAdaptiveBitrateStreaming { get; set; }
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- }
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-
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- public class GetVariantHlsVideoPlaylist : VideoStreamRequest
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- {
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- }
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-
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- public class GetVariantHlsAudioPlaylist : StreamRequest
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- {
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- }
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-
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- public class GetHlsVideoSegment : VideoStreamRequest
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- {
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- public string PlaylistId { get; set; }
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-
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- /// <summary>
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- /// Gets or sets the segment id.
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- /// </summary>
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- /// <value>The segment id.</value>
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- public string SegmentId { get; set; }
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- }
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-
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- public class GetHlsAudioSegment : StreamRequest
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- {
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- public string PlaylistId { get; set; }
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-
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- /// <summary>
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- /// Gets or sets the segment id.
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- /// </summary>
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- /// <value>The segment id.</value>
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- public string SegmentId { get; set; }
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- }
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-
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- [Authenticated]
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- public class DynamicHlsService : BaseHlsService
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- {
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- public DynamicHlsService(
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- ILogger<DynamicHlsService> logger,
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- IServerConfigurationManager serverConfigurationManager,
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- IHttpResultFactory httpResultFactory,
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- IUserManager userManager,
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- ILibraryManager libraryManager,
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- IIsoManager isoManager,
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- IMediaEncoder mediaEncoder,
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- IFileSystem fileSystem,
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- IDlnaManager dlnaManager,
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- IDeviceManager deviceManager,
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- IMediaSourceManager mediaSourceManager,
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- IJsonSerializer jsonSerializer,
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- IAuthorizationContext authorizationContext,
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- INetworkManager networkManager,
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- EncodingHelper encodingHelper)
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- : base(
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- logger,
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- serverConfigurationManager,
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- httpResultFactory,
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- userManager,
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- libraryManager,
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- isoManager,
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- mediaEncoder,
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- fileSystem,
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- dlnaManager,
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- deviceManager,
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- mediaSourceManager,
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- jsonSerializer,
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- authorizationContext,
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- encodingHelper)
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- {
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- NetworkManager = networkManager;
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- }
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-
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- protected INetworkManager NetworkManager { get; private set; }
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-
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- public Task<object> Get(GetMasterHlsVideoPlaylist request)
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- {
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- return GetMasterPlaylistInternal(request, "GET");
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- }
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-
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- public Task<object> Head(GetMasterHlsVideoPlaylist request)
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- {
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- return GetMasterPlaylistInternal(request, "HEAD");
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- }
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-
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- public Task<object> Get(GetMasterHlsAudioPlaylist request)
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- {
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- return GetMasterPlaylistInternal(request, "GET");
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- }
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-
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- public Task<object> Head(GetMasterHlsAudioPlaylist request)
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- {
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- return GetMasterPlaylistInternal(request, "HEAD");
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- }
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-
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- public Task<object> Get(GetVariantHlsVideoPlaylist request)
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- {
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- return GetVariantPlaylistInternal(request, true, "main");
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- }
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-
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- public Task<object> Get(GetVariantHlsAudioPlaylist request)
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- {
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- return GetVariantPlaylistInternal(request, false, "main");
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- }
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-
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- public Task<object> Get(GetHlsVideoSegment request)
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- {
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- return GetDynamicSegment(request, request.SegmentId);
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- }
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-
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- public Task<object> Get(GetHlsAudioSegment request)
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- {
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- return GetDynamicSegment(request, request.SegmentId);
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- }
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-
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- private async Task<object> GetDynamicSegment(StreamRequest request, string segmentId)
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- {
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- if ((request.StartTimeTicks ?? 0) > 0)
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- {
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- throw new ArgumentException("StartTimeTicks is not allowed.");
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- }
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-
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- var cancellationTokenSource = new CancellationTokenSource();
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- var cancellationToken = cancellationTokenSource.Token;
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-
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- var requestedIndex = int.Parse(segmentId, NumberStyles.Integer, CultureInfo.InvariantCulture);
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-
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- var state = await GetState(request, cancellationToken).ConfigureAwait(false);
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-
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- var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8");
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-
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- var segmentPath = GetSegmentPath(state, playlistPath, requestedIndex);
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-
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- var segmentExtension = GetSegmentFileExtension(state.Request);
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-
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- TranscodingJob job = null;
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-
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- if (File.Exists(segmentPath))
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- {
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- job = ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
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- Logger.LogDebug("returning {0} [it exists, try 1]", segmentPath);
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- return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, requestedIndex, job, cancellationToken).ConfigureAwait(false);
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- }
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-
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- var transcodingLock = ApiEntryPoint.Instance.GetTranscodingLock(playlistPath);
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- await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
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- var released = false;
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- var startTranscoding = false;
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-
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- try
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- {
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- if (File.Exists(segmentPath))
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- {
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- job = ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
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- transcodingLock.Release();
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- released = true;
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- Logger.LogDebug("returning {0} [it exists, try 2]", segmentPath);
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- return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, requestedIndex, job, cancellationToken).ConfigureAwait(false);
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- }
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- else
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- {
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- var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension);
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- var segmentGapRequiringTranscodingChange = 24 / state.SegmentLength;
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-
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- if (currentTranscodingIndex == null)
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- {
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- Logger.LogDebug("Starting transcoding because currentTranscodingIndex=null");
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- startTranscoding = true;
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- }
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- else if (requestedIndex < currentTranscodingIndex.Value)
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- {
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- Logger.LogDebug("Starting transcoding because requestedIndex={0} and currentTranscodingIndex={1}", requestedIndex, currentTranscodingIndex);
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- startTranscoding = true;
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- }
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- else if (requestedIndex - currentTranscodingIndex.Value > segmentGapRequiringTranscodingChange)
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- {
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- Logger.LogDebug("Starting transcoding because segmentGap is {0} and max allowed gap is {1}. requestedIndex={2}", requestedIndex - currentTranscodingIndex.Value, segmentGapRequiringTranscodingChange, requestedIndex);
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- startTranscoding = true;
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- }
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-
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- if (startTranscoding)
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- {
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- // If the playlist doesn't already exist, startup ffmpeg
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- try
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- {
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- await ApiEntryPoint.Instance.KillTranscodingJobs(request.DeviceId, request.PlaySessionId, p => false);
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-
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- if (currentTranscodingIndex.HasValue)
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- {
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- DeleteLastFile(playlistPath, segmentExtension, 0);
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- }
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-
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- request.StartTimeTicks = GetStartPositionTicks(state, requestedIndex);
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-
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- state.WaitForPath = segmentPath;
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- job = await StartFfMpeg(state, playlistPath, cancellationTokenSource).ConfigureAwait(false);
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- }
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- catch
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- {
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- state.Dispose();
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- throw;
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- }
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-
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- // await WaitForMinimumSegmentCount(playlistPath, 1, cancellationTokenSource.Token).ConfigureAwait(false);
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- }
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- else
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- {
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- job = ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
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- if (job.TranscodingThrottler != null)
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- {
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- await job.TranscodingThrottler.UnpauseTranscoding();
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- }
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- }
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- }
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- }
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- finally
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- {
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- if (!released)
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- {
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- transcodingLock.Release();
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- }
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- }
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-
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- // Logger.LogInformation("waiting for {0}", segmentPath);
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- // while (!File.Exists(segmentPath))
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- //{
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- // await Task.Delay(50, cancellationToken).ConfigureAwait(false);
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- //}
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-
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- Logger.LogDebug("returning {0} [general case]", segmentPath);
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- job ??= ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlistPath, TranscodingJobType);
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- return await GetSegmentResult(state, playlistPath, segmentPath, segmentExtension, requestedIndex, job, cancellationToken).ConfigureAwait(false);
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- }
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-
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- private const int BufferSize = 81920;
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-
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- private long GetStartPositionTicks(StreamState state, int requestedIndex)
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- {
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- double startSeconds = 0;
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- var lengths = GetSegmentLengths(state);
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-
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- if (requestedIndex >= lengths.Length)
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- {
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- var msg = string.Format("Invalid segment index requested: {0} - Segment count: {1}", requestedIndex, lengths.Length);
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- throw new ArgumentException(msg);
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- }
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-
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- for (var i = 0; i < requestedIndex; i++)
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- {
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- startSeconds += lengths[i];
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- }
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-
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- var position = TimeSpan.FromSeconds(startSeconds).Ticks;
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- return position;
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- }
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-
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- private long GetEndPositionTicks(StreamState state, int requestedIndex)
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- {
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- double startSeconds = 0;
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- var lengths = GetSegmentLengths(state);
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-
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- if (requestedIndex >= lengths.Length)
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- {
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- var msg = string.Format("Invalid segment index requested: {0} - Segment count: {1}", requestedIndex, lengths.Length);
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- throw new ArgumentException(msg);
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- }
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-
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- for (var i = 0; i <= requestedIndex; i++)
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- {
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- startSeconds += lengths[i];
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- }
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-
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- var position = TimeSpan.FromSeconds(startSeconds).Ticks;
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- return position;
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- }
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-
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- private double[] GetSegmentLengths(StreamState state)
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- {
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- var result = new List<double>();
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-
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- var ticks = state.RunTimeTicks ?? 0;
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-
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- var segmentLengthTicks = TimeSpan.FromSeconds(state.SegmentLength).Ticks;
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-
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- while (ticks > 0)
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- {
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- var length = ticks >= segmentLengthTicks ? segmentLengthTicks : ticks;
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-
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- result.Add(TimeSpan.FromTicks(length).TotalSeconds);
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-
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- ticks -= length;
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- }
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-
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- return result.ToArray();
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- }
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-
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- public int? GetCurrentTranscodingIndex(string playlist, string segmentExtension)
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- {
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- var job = ApiEntryPoint.Instance.GetTranscodingJob(playlist, TranscodingJobType);
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-
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- if (job == null || job.HasExited)
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- {
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- return null;
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- }
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-
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- var file = GetLastTranscodingFile(playlist, segmentExtension, FileSystem);
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-
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- if (file == null)
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- {
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- return null;
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- }
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-
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- var playlistFilename = Path.GetFileNameWithoutExtension(playlist);
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-
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- var indexString = Path.GetFileNameWithoutExtension(file.Name).AsSpan().Slice(playlistFilename.Length);
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-
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- return int.Parse(indexString, NumberStyles.Integer, CultureInfo.InvariantCulture);
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- }
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-
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- private void DeleteLastFile(string playlistPath, string segmentExtension, int retryCount)
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- {
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- var file = GetLastTranscodingFile(playlistPath, segmentExtension, FileSystem);
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-
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- if (file != null)
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- {
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- DeleteFile(file.FullName, retryCount);
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- }
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- }
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-
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- private void DeleteFile(string path, int retryCount)
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- {
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- if (retryCount >= 5)
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- {
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- return;
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- }
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-
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- Logger.LogDebug("Deleting partial HLS file {path}", path);
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-
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- try
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- {
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- FileSystem.DeleteFile(path);
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- }
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- catch (IOException ex)
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- {
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- Logger.LogError(ex, "Error deleting partial stream file(s) {path}", path);
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-
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- var task = Task.Delay(100);
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- Task.WaitAll(task);
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- DeleteFile(path, retryCount + 1);
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- }
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- catch (Exception ex)
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- {
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- Logger.LogError(ex, "Error deleting partial stream file(s) {path}", path);
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- }
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- }
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-
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- private static FileSystemMetadata GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem)
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- {
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- var folder = Path.GetDirectoryName(playlist);
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-
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- var filePrefix = Path.GetFileNameWithoutExtension(playlist) ?? string.Empty;
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-
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- try
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- {
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- return fileSystem.GetFiles(folder, new[] { segmentExtension }, true, false)
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- .Where(i => Path.GetFileNameWithoutExtension(i.Name).StartsWith(filePrefix, StringComparison.OrdinalIgnoreCase))
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- .OrderByDescending(fileSystem.GetLastWriteTimeUtc)
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- .FirstOrDefault();
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- }
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- catch (IOException)
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- {
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- return null;
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- }
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- }
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-
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- protected override int GetStartNumber(StreamState state)
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- {
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- return GetStartNumber(state.VideoRequest);
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- }
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-
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- private int GetStartNumber(VideoStreamRequest request)
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- {
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- var segmentId = "0";
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-
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- if (request is GetHlsVideoSegment segmentRequest)
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- {
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- segmentId = segmentRequest.SegmentId;
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- }
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-
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- return int.Parse(segmentId, NumberStyles.Integer, CultureInfo.InvariantCulture);
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- }
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-
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- 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));
|
|
|
- }
|
|
|
-
|
|
|
- private async Task<object> GetSegmentResult(StreamState state,
|
|
|
- string playlistPath,
|
|
|
- string segmentPath,
|
|
|
- string segmentExtension,
|
|
|
- int segmentIndex,
|
|
|
- TranscodingJob transcodingJob,
|
|
|
- CancellationToken cancellationToken)
|
|
|
- {
|
|
|
- var segmentExists = 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 await GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob).ConfigureAwait(false);
|
|
|
- }
|
|
|
-
|
|
|
- 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 await GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob).ConfigureAwait(false);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- 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 || File.Exists(nextSegmentPath))
|
|
|
- {
|
|
|
- Logger.LogDebug("serving up {0} as it deemed ready", segmentPath);
|
|
|
- return await GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob).ConfigureAwait(false);
|
|
|
- }
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
- segmentExists = File.Exists(segmentPath);
|
|
|
- if (segmentExists)
|
|
|
- {
|
|
|
- continue; // avoid unnecessary waiting if segment just became available
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- await Task.Delay(100, cancellationToken).ConfigureAwait(false);
|
|
|
- }
|
|
|
-
|
|
|
- if (!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 await GetSegmentResult(state, segmentPath, segmentIndex, transcodingJob).ConfigureAwait(false);
|
|
|
- }
|
|
|
-
|
|
|
- private Task<object> GetSegmentResult(StreamState state, string segmentPath, int index, TranscodingJob transcodingJob)
|
|
|
- {
|
|
|
- var segmentEndingPositionTicks = GetEndPositionTicks(state, index);
|
|
|
-
|
|
|
- return ResultFactory.GetStaticFileResult(Request, new StaticFileResultOptions
|
|
|
- {
|
|
|
- Path = segmentPath,
|
|
|
- FileShare = FileShare.ReadWrite,
|
|
|
- OnComplete = () =>
|
|
|
- {
|
|
|
- Logger.LogDebug("finished serving {0}", segmentPath);
|
|
|
- if (transcodingJob != null)
|
|
|
- {
|
|
|
- transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks);
|
|
|
- ApiEntryPoint.Instance.OnTranscodeEndRequest(transcodingJob);
|
|
|
- }
|
|
|
- }
|
|
|
- });
|
|
|
- }
|
|
|
-
|
|
|
- private async Task<object> GetMasterPlaylistInternal(StreamRequest request, string method)
|
|
|
- {
|
|
|
- var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
|
|
|
-
|
|
|
- if (string.IsNullOrEmpty(request.MediaSourceId))
|
|
|
- {
|
|
|
- throw new ArgumentException("MediaSourceId is required");
|
|
|
- }
|
|
|
-
|
|
|
- var playlistText = string.Empty;
|
|
|
-
|
|
|
- if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase))
|
|
|
- {
|
|
|
- var audioBitrate = state.OutputAudioBitrate ?? 0;
|
|
|
- var videoBitrate = state.OutputVideoBitrate ?? 0;
|
|
|
-
|
|
|
- playlistText = GetMasterPlaylistFileText(state, videoBitrate + audioBitrate);
|
|
|
- }
|
|
|
-
|
|
|
- return ResultFactory.GetResult(playlistText, MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
|
|
|
- }
|
|
|
-
|
|
|
- private string GetMasterPlaylistFileText(StreamState state, int totalBitrate)
|
|
|
- {
|
|
|
- var builder = new StringBuilder();
|
|
|
-
|
|
|
- builder.AppendLine("#EXTM3U");
|
|
|
-
|
|
|
- var isLiveStream = state.IsSegmentedLiveStream;
|
|
|
-
|
|
|
- var queryStringIndex = Request.RawUrl.IndexOf('?');
|
|
|
- var queryString = queryStringIndex == -1 ? string.Empty : Request.RawUrl.Substring(queryStringIndex);
|
|
|
-
|
|
|
- // 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 request = state.Request;
|
|
|
-
|
|
|
- var subtitleStreams = state.MediaSource
|
|
|
- .MediaStreams
|
|
|
- .Where(i => i.IsTextSubtitleStream)
|
|
|
- .ToList();
|
|
|
-
|
|
|
- var subtitleGroup = subtitleStreams.Count > 0 &&
|
|
|
- request is GetMasterHlsVideoPlaylist &&
|
|
|
- (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))
|
|
|
- {
|
|
|
- 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 builder.ToString();
|
|
|
- }
|
|
|
-
|
|
|
- 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 void AddSubtitles(StreamState state, IEnumerable<MediaStream> subtitles, StringBuilder builder)
|
|
|
- {
|
|
|
- var selectedIndex = state.SubtitleStream == null || state.SubtitleDeliveryMethod != SubtitleDeliveryMethod.Hls ? (int?)null : state.SubtitleStream.Index;
|
|
|
-
|
|
|
- foreach (var stream in subtitles)
|
|
|
- {
|
|
|
- const string format = "#EXT-X-MEDIA:TYPE=SUBTITLES,GROUP-ID=\"subs\",NAME=\"{0}\",DEFAULT={1},FORCED={2},AUTOSELECT=YES,URI=\"{3}\",LANGUAGE=\"{4}\"";
|
|
|
-
|
|
|
- var name = stream.DisplayTitle;
|
|
|
-
|
|
|
- var isDefault = selectedIndex.HasValue && selectedIndex.Value == stream.Index;
|
|
|
- var isForced = stream.IsForced;
|
|
|
-
|
|
|
- var url = string.Format("{0}/Subtitles/{1}/subtitles.m3u8?SegmentLength={2}&api_key={3}",
|
|
|
- state.Request.MediaSourceId,
|
|
|
- stream.Index.ToString(CultureInfo.InvariantCulture),
|
|
|
- 30.ToString(CultureInfo.InvariantCulture),
|
|
|
- AuthorizationContext.GetAuthorizationInfo(Request).Token);
|
|
|
-
|
|
|
- var line = string.Format(format,
|
|
|
- name,
|
|
|
- isDefault ? "YES" : "NO",
|
|
|
- isForced ? "YES" : "NO",
|
|
|
- url,
|
|
|
- stream.Language ?? "Unknown");
|
|
|
-
|
|
|
- builder.AppendLine(line);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- private bool EnableAdaptiveBitrateStreaming(StreamState state, bool isLiveStream)
|
|
|
- {
|
|
|
- // Within the local network this will likely do more harm than good.
|
|
|
- if (Request.IsLocal || NetworkManager.IsInLocalNetwork(Request.RemoteIp))
|
|
|
- {
|
|
|
- return false;
|
|
|
- }
|
|
|
-
|
|
|
- if (state.Request is IMasterHlsRequest request && !request.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 HlsCodecStringFactory.GetAACString(profile);
|
|
|
- }
|
|
|
- else if (string.Equals(state.ActualOutputAudioCodec, "mp3", StringComparison.OrdinalIgnoreCase))
|
|
|
- {
|
|
|
- return HlsCodecStringFactory.GetMP3String();
|
|
|
- }
|
|
|
- else if (string.Equals(state.ActualOutputAudioCodec, "ac3", StringComparison.OrdinalIgnoreCase))
|
|
|
- {
|
|
|
- return HlsCodecStringFactory.GetAC3String();
|
|
|
- }
|
|
|
- else if (string.Equals(state.ActualOutputAudioCodec, "eac3", StringComparison.OrdinalIgnoreCase))
|
|
|
- {
|
|
|
- return HlsCodecStringFactory.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>
|
|
|
- /// <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 HlsCodecStringFactory.GetH264String(profile, level);
|
|
|
- }
|
|
|
- else if (string.Equals(codec, "h265", StringComparison.OrdinalIgnoreCase)
|
|
|
- || string.Equals(codec, "hevc", StringComparison.OrdinalIgnoreCase))
|
|
|
- {
|
|
|
- string profile = state.GetRequestedProfiles("h265").FirstOrDefault();
|
|
|
-
|
|
|
- return HlsCodecStringFactory.GetH265String(profile, level);
|
|
|
- }
|
|
|
-
|
|
|
- return string.Empty;
|
|
|
- }
|
|
|
-
|
|
|
- /// <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 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);
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- /// <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());
|
|
|
- }
|
|
|
- }
|
|
|
-
|
|
|
- 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);
|
|
|
- }
|
|
|
-
|
|
|
- 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 async Task<object> GetVariantPlaylistInternal(StreamRequest request, bool isOutputVideo, string name)
|
|
|
- {
|
|
|
- var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
|
|
|
-
|
|
|
- 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.Append("#EXT-X-TARGETDURATION:")
|
|
|
- .AppendLine(Math.Ceiling(segmentLengths.Length > 0 ? segmentLengths.Max() : state.SegmentLength).ToString(CultureInfo.InvariantCulture));
|
|
|
- builder.AppendLine("#EXT-X-MEDIA-SEQUENCE:0");
|
|
|
-
|
|
|
- var queryStringIndex = Request.RawUrl.IndexOf('?');
|
|
|
- var queryString = queryStringIndex == -1 ? string.Empty : Request.RawUrl.Substring(queryStringIndex);
|
|
|
-
|
|
|
- // if ((Request.UserAgent ?? string.Empty).IndexOf("roku", StringComparison.OrdinalIgnoreCase) != -1)
|
|
|
- //{
|
|
|
- // queryString = string.Empty;
|
|
|
- //}
|
|
|
-
|
|
|
- var index = 0;
|
|
|
-
|
|
|
- foreach (var length in segmentLengths)
|
|
|
- {
|
|
|
- builder.Append("#EXTINF:")
|
|
|
- .Append(length.ToString("0.0000", CultureInfo.InvariantCulture))
|
|
|
- .AppendLine(", nodesc");
|
|
|
-
|
|
|
- builder.AppendFormat(
|
|
|
- CultureInfo.InvariantCulture,
|
|
|
- "hls1/{0}/{1}{2}{3}",
|
|
|
- name,
|
|
|
- index.ToString(CultureInfo.InvariantCulture),
|
|
|
- GetSegmentFileExtension(request),
|
|
|
- queryString).AppendLine();
|
|
|
-
|
|
|
- index++;
|
|
|
- }
|
|
|
-
|
|
|
- builder.AppendLine("#EXT-X-ENDLIST");
|
|
|
-
|
|
|
- var playlistText = builder.ToString();
|
|
|
-
|
|
|
- return ResultFactory.GetResult(playlistText, MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
|
|
|
- }
|
|
|
-
|
|
|
- protected override 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.ToArray());
|
|
|
- }
|
|
|
-
|
|
|
- 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;
|
|
|
- }
|
|
|
-
|
|
|
- protected override string GetVideoArguments(StreamState state, EncodingOptions encodingOptions)
|
|
|
- {
|
|
|
- if (!state.IsOutputVideo)
|
|
|
- {
|
|
|
- return string.Empty;
|
|
|
- }
|
|
|
-
|
|
|
- var codec = EncodingHelper.GetVideoEncoder(state, encodingOptions);
|
|
|
-
|
|
|
- var args = "-codec:v:0 " + codec;
|
|
|
-
|
|
|
- // if (state.EnableMpegtsM2TsMode)
|
|
|
- // {
|
|
|
- // args += " -mpegts_m2ts_mode 1";
|
|
|
- // }
|
|
|
-
|
|
|
- // See if we can save come cpu cycles by avoiding encoding
|
|
|
- if (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})\"",
|
|
|
- GetStartNumber(state) * 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, GetDefaultEncoderPreset());
|
|
|
-
|
|
|
- // 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;
|
|
|
- }
|
|
|
-
|
|
|
- protected override string GetCommandLineArguments(string outputPath, EncodingOptions encodingOptions, StreamState state, bool isEncoding)
|
|
|
- {
|
|
|
- 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 startNumber = GetStartNumber(state);
|
|
|
- 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);
|
|
|
-
|
|
|
- var segmentFormat = GetSegmentFileExtension(state.Request).TrimStart('.');
|
|
|
- if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase))
|
|
|
- {
|
|
|
- segmentFormat = "mpegts";
|
|
|
- }
|
|
|
-
|
|
|
- return string.Format(
|
|
|
- "{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),
|
|
|
- GetAudioArguments(state, encodingOptions),
|
|
|
- state.SegmentLength.ToString(CultureInfo.InvariantCulture),
|
|
|
- segmentFormat,
|
|
|
- startNumberParam,
|
|
|
- outputTsArg,
|
|
|
- outputPath
|
|
|
- ).Trim();
|
|
|
- }
|
|
|
- }
|
|
|
-}
|