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using System.IO;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Streaming;
using MediaBrowser.Model.MediaInfo;
using MediaBrowser.Model.Net;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
namespace Jellyfin.Api.Helpers;
/// <summary>
/// Audio helper.
/// </summary>
public class AudioHelper
{
private readonly IUserManager _userManager;
private readonly ILibraryManager _libraryManager;
private readonly IMediaSourceManager _mediaSourceManager;
private readonly IServerConfigurationManager _serverConfigurationManager;
private readonly IMediaEncoder _mediaEncoder;
private readonly ITranscodeManager _transcodeManager;
private readonly IHttpClientFactory _httpClientFactory;
private readonly IHttpContextAccessor _httpContextAccessor;
private readonly EncodingHelper _encodingHelper;
/// <summary>
/// Initializes a new instance of the <see cref="AudioHelper"/> class.
/// </summary>
/// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> 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="transcodeManager">Instance of <see cref="ITranscodeManager"/> interface.</param>
/// <param name="httpClientFactory">Instance of the <see cref="IHttpClientFactory"/> interface.</param>
/// <param name="httpContextAccessor">Instance of the <see cref="IHttpContextAccessor"/> interface.</param>
/// <param name="encodingHelper">Instance of <see cref="EncodingHelper"/>.</param>
public AudioHelper(
IUserManager userManager,
ILibraryManager libraryManager,
IMediaSourceManager mediaSourceManager,
IServerConfigurationManager serverConfigurationManager,
IMediaEncoder mediaEncoder,
ITranscodeManager transcodeManager,
IHttpClientFactory httpClientFactory,
IHttpContextAccessor httpContextAccessor,
EncodingHelper encodingHelper)
{
_userManager = userManager;
_libraryManager = libraryManager;
_mediaSourceManager = mediaSourceManager;
_serverConfigurationManager = serverConfigurationManager;
_mediaEncoder = mediaEncoder;
_transcodeManager = transcodeManager;
_httpClientFactory = httpClientFactory;
_httpContextAccessor = httpContextAccessor;
_encodingHelper = encodingHelper;
}
/// <summary>
/// Get audio stream.
/// </summary>
/// <param name="transcodingJobType">Transcoding job type.</param>
/// <param name="streamingRequest">Streaming controller.Request dto.</param>
/// <returns>A <see cref="Task"/> containing the resulting <see cref="ActionResult"/>.</returns>
public async Task<ActionResult> GetAudioStream(
TranscodingJobType transcodingJobType,
StreamingRequestDto streamingRequest)
{
if (_httpContextAccessor.HttpContext is null)
{
throw new ResourceNotFoundException(nameof(_httpContextAccessor.HttpContext));
}
bool isHeadRequest = _httpContextAccessor.HttpContext.Request.Method == System.Net.WebRequestMethods.Http.Head;
// CTS lifecycle is managed internally.
var cancellationTokenSource = new CancellationTokenSource();
using var state = await StreamingHelpers.GetStreamingState(
streamingRequest,
_httpContextAccessor.HttpContext,
_mediaSourceManager,
_userManager,
_libraryManager,
_serverConfigurationManager,
_mediaEncoder,
_encodingHelper,
_transcodeManager,
transcodingJobType,
cancellationTokenSource.Token)
.ConfigureAwait(false);
if (streamingRequest.Static && state.DirectStreamProvider is not null)
{
var liveStreamInfo = _mediaSourceManager.GetLiveStreamInfo(streamingRequest.LiveStreamId);
if (liveStreamInfo is null)
{
throw new FileNotFoundException();
}
var liveStream = new ProgressiveFileStream(liveStreamInfo.GetStream());
// TODO (moved from MediaBrowser.Api): Don't hardcode contentType
return new FileStreamResult(liveStream, MimeTypes.GetMimeType("file.ts"));
}
// Static remote stream
if (streamingRequest.Static && state.InputProtocol == MediaProtocol.Http)
{
var httpClient = _httpClientFactory.CreateClient(NamedClient.Default);
return await FileStreamResponseHelpers.GetStaticRemoteStreamResult(state, httpClient, _httpContextAccessor.HttpContext).ConfigureAwait(false);
}
if (streamingRequest.Static && state.InputProtocol != MediaProtocol.File)
{
return new BadRequestObjectResult($"Input protocol {state.InputProtocol} cannot be streamed statically");
}
var outputPath = state.OutputFilePath;
// Static stream
if (streamingRequest.Static)
{
var contentType = state.GetMimeType("." + state.OutputContainer, false) ?? state.GetMimeType(state.MediaPath);
if (state.MediaSource.IsInfiniteStream)
{
var stream = new ProgressiveFileStream(state.MediaPath, null, _transcodeManager);
return new FileStreamResult(stream, contentType);
}
return FileStreamResponseHelpers.GetStaticFileResult(
state.MediaPath,
contentType);
}
// Need to start ffmpeg (because media can't be returned directly)
var encodingOptions = _serverConfigurationManager.GetEncodingOptions();
var ffmpegCommandLineArguments = _encodingHelper.GetProgressiveAudioFullCommandLine(state, encodingOptions, outputPath);
return await FileStreamResponseHelpers.GetTranscodedFile(
state,
isHeadRequest,
_httpContextAccessor.HttpContext,
_transcodeManager,
ffmpegCommandLineArguments,
transcodingJobType,
cancellationTokenSource).ConfigureAwait(false);
}
}
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