From 6fe82962661d30baadb19d241f30fb6126f53406 Mon Sep 17 00:00:00 2001
From: LukePulverenti Luke Pulverenti luke pulverenti
 <LukePulverenti Luke Pulverenti luke.pulverenti@gmail.com>
Date: Sun, 12 Aug 2012 13:05:51 -0400
Subject: [PATCH] Moved more common code from audio/video handler down to the
 base class

---
 MediaBrowser.Api/HttpHandlers/AudioHandler.cs | 47 +++++-----
 .../HttpHandlers/BaseMediaHandler.cs          | 57 +++++++++++-
 MediaBrowser.Api/HttpHandlers/VideoHandler.cs | 88 +++++--------------
 3 files changed, 98 insertions(+), 94 deletions(-)

diff --git a/MediaBrowser.Api/HttpHandlers/AudioHandler.cs b/MediaBrowser.Api/HttpHandlers/AudioHandler.cs
index c3c27c568..311f8f9c7 100644
--- a/MediaBrowser.Api/HttpHandlers/AudioHandler.cs
+++ b/MediaBrowser.Api/HttpHandlers/AudioHandler.cs
@@ -1,28 +1,36 @@
-using System;
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Api.HttpHandlers
 {
+    /// <summary>
+    /// Supported output formats are: mp3,flac,ogg,wav,asf,wma,aac
+    /// </summary>
     public class AudioHandler : BaseMediaHandler<Audio>
     {
         /// <summary>
-        /// Supported values: mp3,flac,ogg,wav,asf
+        /// Overriding to provide mp3 as a default, since pretty much every device supports it
         /// </summary>
-        public IEnumerable<string> AudioFormats
+        protected override IEnumerable<string> OutputFormats
         {
             get
             {
-                string val = QueryString["audioformats"];
+                IEnumerable<string> vals = base.OutputFormats;
 
-                if (string.IsNullOrEmpty(val))
-                {
-                    return new string[] { "mp3" };
-                }
+                return vals.Any() ? vals : new string[] { "mp3" };
+            }
+        }
 
-                return val.Split(',');
+        /// <summary>
+        /// We can output these files directly, but we can't encode them
+        /// </summary>
+        protected override IEnumerable<string> UnsupportedOutputEncodingFormats
+        {
+            get
+            {
+                return new string[] { "wma", "aac" };
             }
         }
 
@@ -48,7 +56,7 @@ namespace MediaBrowser.Api.HttpHandlers
                 return null;
             }
 
-            int index = AudioFormats.ToList().IndexOf(audioFormat);
+            int index = OutputFormats.ToList().IndexOf(audioFormat);
 
             return AudioBitRates.ElementAt(index);
         }
@@ -58,14 +66,13 @@ namespace MediaBrowser.Api.HttpHandlers
         /// </summary>
         protected override bool RequiresConversion()
         {
-            string currentFormat = Path.GetExtension(LibraryItem.Path).Replace(".", string.Empty);
-
-            // If it's not in a format the consumer accepts, return true
-            if (!AudioFormats.Any(f => currentFormat.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
+            if (base.RequiresConversion())
             {
                 return true;
             }
 
+            string currentFormat = Path.GetExtension(LibraryItem.Path).Replace(".", string.Empty);
+            
             int? bitrate = GetMaxAcceptedBitRate(currentFormat);
 
             // If the bitrate is greater than our desired bitrate, we need to transcode
@@ -90,14 +97,6 @@ namespace MediaBrowser.Api.HttpHandlers
             return false;
         }
 
-        /// <summary>
-        /// Gets the format we'll be converting to
-        /// </summary>
-        protected override string GetOutputFormat()
-        {
-            return AudioFormats.First();
-        }
-
         /// <summary>
         /// Creates arguments to pass to ffmpeg
         /// </summary>
@@ -105,7 +104,7 @@ namespace MediaBrowser.Api.HttpHandlers
         {
             List<string> audioTranscodeParams = new List<string>();
 
-            string outputFormat = GetOutputFormat();
+            string outputFormat = GetConversionOutputFormat();
 
             int? bitrate = GetMaxAcceptedBitRate(outputFormat);
 
diff --git a/MediaBrowser.Api/HttpHandlers/BaseMediaHandler.cs b/MediaBrowser.Api/HttpHandlers/BaseMediaHandler.cs
index f3b217c0d..890e73950 100644
--- a/MediaBrowser.Api/HttpHandlers/BaseMediaHandler.cs
+++ b/MediaBrowser.Api/HttpHandlers/BaseMediaHandler.cs
@@ -1,6 +1,8 @@
 using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Net;
 using System.Threading.Tasks;
 using MediaBrowser.Common.Configuration;
@@ -15,6 +17,28 @@ namespace MediaBrowser.Api.HttpHandlers
     public abstract class BaseMediaHandler<T> : BaseHandler
         where T : BaseItem, new()
     {
+        /// <summary>
+        /// Supported values: mp3,flac,ogg,wav,asf,wma,aac
+        /// </summary>
+        protected virtual IEnumerable<string> OutputFormats
+        {
+            get
+            {
+                return QueryString["outputformats"].Split(',');
+            }
+        }
+
+        /// <summary>
+        /// These formats can be outputted directly but cannot be encoded to
+        /// </summary>
+        protected virtual IEnumerable<string> UnsupportedOutputEncodingFormats
+        {
+            get
+            {
+                return new string[] { };
+            }
+        }
+
         private T _LibraryItem;
         /// <summary>
         /// Gets the library item that will be played, if any
@@ -71,7 +95,7 @@ namespace MediaBrowser.Api.HttpHandlers
         {
             get
             {
-                return MimeTypes.GetMimeType("." + GetOutputFormat());
+                return MimeTypes.GetMimeType("." + GetConversionOutputFormat());
             }
         }
 
@@ -97,8 +121,35 @@ namespace MediaBrowser.Api.HttpHandlers
         }
 
         protected abstract string GetCommandLineArguments();
-        protected abstract string GetOutputFormat();
-        protected abstract bool RequiresConversion();
+
+        /// <summary>
+        /// Gets the format we'll be converting to
+        /// </summary>
+        protected virtual string GetConversionOutputFormat()
+        {
+            return OutputFormats.First(f => !UnsupportedOutputEncodingFormats.Any(s => s.Equals(f, StringComparison.OrdinalIgnoreCase)));
+        }
+
+        protected virtual bool RequiresConversion()
+        {
+            string currentFormat = Path.GetExtension(LibraryItem.Path).Replace(".", string.Empty);
+
+            if (OutputFormats.Any(f => currentFormat.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
+            {
+                // We can output these files directly, but we can't encode them
+                if (UnsupportedOutputEncodingFormats.Any(f => currentFormat.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
+                {
+                    return false;
+                }
+            }
+            else
+            {
+                // If it's not in a format the consumer accepts, return true
+                return true;
+            }
+
+            return false;
+        }
 
         protected async override Task WriteResponseToOutputStream(Stream stream)
         {
diff --git a/MediaBrowser.Api/HttpHandlers/VideoHandler.cs b/MediaBrowser.Api/HttpHandlers/VideoHandler.cs
index 0b556b886..d8e06194d 100644
--- a/MediaBrowser.Api/HttpHandlers/VideoHandler.cs
+++ b/MediaBrowser.Api/HttpHandlers/VideoHandler.cs
@@ -5,36 +5,25 @@ using MediaBrowser.Model.Entities;
 
 namespace MediaBrowser.Api.HttpHandlers
 {
+    /// <summary>
+    /// Supported output formats: mkv,m4v,mp4,asf,wmv,mov,webm,ogv,3gp,avi,ts,flv
+    /// </summary>
     class VideoHandler : BaseMediaHandler<Video>
     {
-        private IEnumerable<string> UnsupportedOutputFormats = new string[] { "mp4" };
-
-        public IEnumerable<string> VideoFormats
+        /// <summary>
+        /// We can output these files directly, but we can't encode them
+        /// </summary>
+        protected override IEnumerable<string> UnsupportedOutputEncodingFormats
         {
             get
             {
-                return QueryString["videoformats"].Split(',');
+                return new string[] { "mp4", "wmv" };
             }
         }
 
-        /// <summary>
-        /// Gets the format we'll be converting to
-        /// </summary>
-        protected override string GetOutputFormat()
-        {
-            return VideoFormats.First(f => !UnsupportedOutputFormats.Any(s => s.Equals(f, StringComparison.OrdinalIgnoreCase)));
-        }
-
         protected override bool RequiresConversion()
         {
-            // If it's not in a format we can output to, return true
-            if (UnsupportedOutputFormats.Any(f => LibraryItem.Path.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
-            {
-                return true;
-            }
-
-            // If it's not in a format the consumer accepts, return true
-            if (!VideoFormats.Any(f => LibraryItem.Path.EndsWith(f, StringComparison.OrdinalIgnoreCase)))
+            if (base.RequiresConversion())
             {
                 return true;
             }
@@ -60,15 +49,18 @@ namespace MediaBrowser.Api.HttpHandlers
             {
                 return "matroska";
             }
+            else if (outputFormat.Equals("ts", StringComparison.OrdinalIgnoreCase))
+            {
+                return "mpegts";
+            }
+            else if (outputFormat.Equals("ogv", StringComparison.OrdinalIgnoreCase))
+            {
+                return "ogg";
+            }
 
             return outputFormat;
         }
 
-        private int GetOutputAudioStreamIndex(string outputFormat)
-        {
-            return 0;
-        }
-
         /// <summary>
         /// Creates arguments to pass to ffmpeg
         /// </summary>
@@ -76,31 +68,10 @@ namespace MediaBrowser.Api.HttpHandlers
         {
             List<string> audioTranscodeParams = new List<string>();
 
-            string outputFormat = GetOutputFormat();
+            string outputFormat = GetConversionOutputFormat();
 
-            int audioStreamIndex = GetOutputAudioStreamIndex(outputFormat);
-
-            List<string> maps = new List<string>();
-
-            // Add the video stream
-            maps.Add("-map 0:0");
-
-            // Add the audio stream
-            if (audioStreamIndex != -1)
-            {
-                maps.Add("-map 0:" + (1 + audioStreamIndex));
-            }
-
-            // Add all the subtitle streams
-            for (int i = 0; i < LibraryItem.Subtitles.Count(); i++)
-            {
-                maps.Add("-map 0:" + (1 + LibraryItem.AudioStreams.Count() + i));
-
-            }
-
-            return string.Format("-i \"{0}\" {1} {2} {3} -f {4} -",
+            return string.Format("-i \"{0}\" {1} {2} -f {3} -",
                 LibraryItem.Path,
-                string.Join(" ", maps.ToArray()),
                 GetVideoArguments(),
                 GetAudioArguments(),
                 GetFFMpegOutputFormat(outputFormat)
@@ -109,29 +80,12 @@ namespace MediaBrowser.Api.HttpHandlers
 
         private string GetVideoArguments()
         {
-            return "-c:v copy";
+            return "-vcodec copy";
         }
 
         private string GetAudioArguments()
         {
-            return "-c:a copy";
-        }
-
-        private string GetSubtitleArguments()
-        {
-            string args = "";
-
-            for (int i = 0; i < LibraryItem.Subtitles.Count(); i++)
-            {
-                if (i > 0)
-                {
-                    args += " ";
-                }
-                args += "-c:s copy";
-
-            }
-
-            return args;
+            return "-acodec copy";
         }
     }
 }