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using MediaBrowser.Common.IO;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using ServiceStack.ServiceHost;
using System;
using System.IO;
namespace MediaBrowser.Api.Playback.Hls
{
/// <summary>
/// Class GetHlsAudioStream
/// </summary>
[Route("/Audio/{Id}/stream.m3u8", "GET")]
[ServiceStack.ServiceHost.Api(Description = "Gets an audio stream using HTTP live streaming.")]
public class GetHlsAudioStream : StreamRequest
{
}
[Route("/Audio/{Id}/segments/{SegmentId}.mp3", "GET")]
[Route("/Audio/{Id}/segments/{SegmentId}.aac", "GET")]
[ServiceStack.ServiceHost.Api(Description = "Gets an Http live streaming segment file. Internal use only.")]
public class GetHlsAudioSegment
{
public string Id { get; set; }
public string SegmentId { get; set; }
}
/// <summary>
/// Class AudioHlsService
/// </summary>
public class AudioHlsService : BaseHlsService
{
public AudioHlsService(IServerApplicationPaths appPaths, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager)
: base(appPaths, userManager, libraryManager, isoManager)
{
}
public object Get(GetHlsAudioSegment request)
{
var file = SegmentFilePrefix + request.SegmentId + Path.GetExtension(Request.PathInfo);
file = Path.Combine(ApplicationPaths.EncodedMediaCachePath, file);
return ToStaticFileResult(file);
}
/// <summary>
/// Gets the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.Object.</returns>
public object Get(GetHlsAudioStream request)
{
return ProcessRequest(request);
}
/// <summary>
/// Gets the audio arguments.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
protected override string GetAudioArguments(StreamState state)
{
var codec = GetAudioCodec(state.Request);
var args = "-codec:a " + codec;
var channels = GetNumAudioChannelsParam(state.Request, state.AudioStream);
if (channels.HasValue)
{
args += " -ac " + channels.Value;
}
if (state.Request.AudioSampleRate.HasValue)
{
args += " -ar " + state.Request.AudioSampleRate.Value;
}
if (state.Request.AudioBitRate.HasValue)
{
args += " -ab " + state.Request.AudioBitRate.Value;
}
return args;
}
/// <summary>
/// Gets the video arguments.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
protected override string GetVideoArguments(StreamState state)
{
// No video
return string.Empty;
}
/// <summary>
/// Gets the segment file extension.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.InvalidOperationException">Only aac and mp3 audio codecs are supported.</exception>
protected override string GetSegmentFileExtension(StreamState state)
{
if (state.Request.AudioCodec == AudioCodecs.Aac)
{
return ".aac";
}
if (state.Request.AudioCodec == AudioCodecs.Mp3)
{
return ".mp3";
}
throw new ArgumentException("Must specify either aac or mp3 audio codec.");
}
/// <summary>
/// Gets the map args.
/// </summary>
/// <param name="state">The state.</param>
/// <returns>System.String.</returns>
protected override string GetMapArgs(StreamState state)
{
return string.Format("-map 0:{0}", state.AudioStream.Index);
}
}
}
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