1 files changed, 112 insertions, 0 deletions
diff --git a/MediaBrowser.Api/Streaming/AudioHandler.cs b/MediaBrowser.Api/Streaming/AudioHandler.cs
new file mode 100644
index 000000000..685e17dbc
--- /dev/null
+++ b/MediaBrowser.Api/Streaming/AudioHandler.cs
@@ -0,0 +1,112 @@
+using MediaBrowser.Common.IO;
+using MediaBrowser.Common.Net.Handlers;
+using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Resolvers;
+using MediaBrowser.Model.DTO;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.Linq;
+using System.Net;
+
+namespace MediaBrowser.Api.Streaming
+{
+    /// <summary>
+    /// Providers a progressive streaming audio api
+    /// </summary>
+    [Export(typeof(IHttpServerHandler))]
+    public class AudioHandler : BaseProgressiveStreamingHandler<Audio>
+    {
+        /// <summary>
+        /// Handleses the request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        /// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
+        public override bool HandlesRequest(HttpListenerRequest request)
+        {
+            return EntityResolutionHelper.AudioFileExtensions.Any(a => ApiService.IsApiUrlMatch("audio" + a, request));
+        }
+
+        /// <summary>
+        /// Gets the audio codec.
+        /// </summary>
+        /// <value>The audio codec.</value>
+        /// <exception cref="InvalidOperationException"></exception>
+        protected override AudioCodecs? AudioCodec
+        {
+            get
+            {
+                var ext = OutputFileExtension;
+
+                if (ext.Equals(".aac", StringComparison.OrdinalIgnoreCase) || ext.Equals(".m4a", StringComparison.OrdinalIgnoreCase))
+                {
+                    return AudioCodecs.Aac;
+                }
+                if (ext.Equals(".mp3", StringComparison.OrdinalIgnoreCase))
+                {
+                    return AudioCodecs.Mp3;
+                }
+                if (ext.Equals(".wma", StringComparison.OrdinalIgnoreCase))
+                {
+                    return AudioCodecs.Wma;
+                }
+                if (ext.Equals(".oga", StringComparison.OrdinalIgnoreCase) || ext.Equals(".ogg", StringComparison.OrdinalIgnoreCase))
+                {
+                    return AudioCodecs.Vorbis;
+                }
+
+                throw new InvalidOperationException();
+            }
+        }
+
+        /// <summary>
+        /// Creates arguments to pass to ffmpeg
+        /// </summary>
+        /// <param name="outputPath">The output path.</param>
+        /// <param name="isoMount">The iso mount.</param>
+        /// <returns>System.String.</returns>
+        /// <exception cref="System.InvalidOperationException">Only aac and mp3 audio codecs are supported.</exception>
+        /// <exception cref="InvalidOperationException">Only aac and mp3 audio codecs are supported.</exception>
+        /// <exception cref="ArgumentException">Only aac and mp3 audio codecs are supported.</exception>
+        protected override string GetCommandLineArguments(string outputPath, IIsoMount isoMount)
+        {
+            var audioTranscodeParams = new List<string>();
+
+            var outputFormat = AudioCodec;
+
+            if (outputFormat != AudioCodecs.Aac && outputFormat != AudioCodecs.Mp3)
+            {
+                throw new InvalidOperationException("Only aac and mp3 audio codecs are supported.");
+            }
+
+            if (AudioBitRate.HasValue)
+            {
+                audioTranscodeParams.Add("-ab " + AudioBitRate.Value);
+            }
+
+            var channels = GetNumAudioChannelsParam();
+
+            if (channels.HasValue)
+            {
+                audioTranscodeParams.Add("-ac " + channels.Value);
+            }
+
+            var sampleRate = GetSampleRateParam();
+
+            if (sampleRate.HasValue)
+            {
+                audioTranscodeParams.Add("-ar " + sampleRate.Value);
+            }
+
+            const string vn = " -vn";
+
+            return string.Format("{0} -i {1}{2} -threads 0{5} {3} -id3v2_version 3 -write_id3v1 1 \"{4}\"",
+                FastSeekCommandLineParameter,
+                GetInputArgument(isoMount),
+                SlowSeekCommandLineParameter,
+                string.Join(" ", audioTranscodeParams.ToArray()),
+                outputPath,
+                vn).Trim();
+        }
+    }
+}