Added an ffprobe helper class

4 files changed, 146 insertions, 1 deletions

diff --git a/MediaBrowser.Controller/FFMpeg/FFProbe.cs b/MediaBrowser.Controller/FFMpeg/FFProbe.cs
new file mode 100644
index 000000000..efd5491de
--- /dev/null
+++ b/MediaBrowser.Controller/FFMpeg/FFProbe.cs
@@ -0,0 +1,68 @@
+using System;

+using System.Diagnostics;

+using MediaBrowser.Common.Logging;

+using MediaBrowser.Common.Serialization;

+

+namespace MediaBrowser.Controller.FFMpeg

+{

+    public static class FFProbe

+    {

+        public static FFProbeResult Run(string path)

+        {

+            ProcessStartInfo startInfo = new ProcessStartInfo();

+

+            startInfo.CreateNoWindow = true;

+

+            startInfo.UseShellExecute = false;

+

+            // Must consume both or ffmpeg may hang due to deadlocks. See comments below.

+            startInfo.RedirectStandardOutput = true;

+            startInfo.RedirectStandardError = true;

+

+            startInfo.FileName = Kernel.Instance.ApplicationPaths.FFProbePath;

+            startInfo.WorkingDirectory = Kernel.Instance.ApplicationPaths.FFMpegDirectory;

+            startInfo.Arguments = string.Format("\"{0}\" -v quiet -print_format json -show_streams -show_format", path);

+

+            Logger.LogInfo(startInfo.FileName + " " + startInfo.Arguments);

+

+            Process process = new Process();

+            process.StartInfo = startInfo;

+

+            try

+            {

+                process.Start();

+

+                // MUST read both stdout and stderr asynchronously or a deadlock may occurr

+                // If we ever decide to disable the ffmpeg log then you must uncomment the below line.

+                process.BeginErrorReadLine();

+

+                FFProbeResult result = JsonSerializer.DeserializeFromStream<FFProbeResult>(process.StandardOutput.BaseStream);

+

+                process.WaitForExit();

+

+                Logger.LogInfo("FFMpeg exited with code " + process.ExitCode);

+

+                return result;

+            }

+            catch (Exception ex)

+            {

+                Logger.LogException(ex);

+

+                // Hate having to do this

+                try

+                {

+                    process.Kill();

+                }

+                catch

+                {

+                }

+

+                return null;

+            }

+            finally

+            {

+                process.Dispose();

+            }

+        }

+    }

+}

diff --git a/MediaBrowser.Controller/FFMpeg/FFProbeResult.cs b/MediaBrowser.Controller/FFMpeg/FFProbeResult.cs
new file mode 100644
index 000000000..cc449991d
--- /dev/null
+++ b/MediaBrowser.Controller/FFMpeg/FFProbeResult.cs
@@ -0,0 +1,76 @@
+using System.Collections.Generic;

+

+namespace MediaBrowser.Controller.FFMpeg

+{

+    /// <summary>

+    /// Provides a class that we can use to deserialize the ffprobe json output

+    /// Sample output:

+    /// http://stackoverflow.com/questions/7708373/get-ffmpeg-information-in-friendly-way

+    /// </summary>

+    public class FFProbeResult

+    {

+        public IEnumerable<MediaStream> streams { get; set; }

+        public MediaFormat format { get; set; }

+    }

+

+    public class MediaStream

+    {

+        public int index { get; set; }

+        public string profile { get; set; }

+        public string codec_name { get; set; }

+        public string codec_long_name { get; set; }

+        public string codec_type { get; set; }

+        public string codec_time_base { get; set; }

+        public string codec_tag { get; set; }

+        public string codec_tag_string { get; set; }

+        public string sample_fmt { get; set; }

+        public string sample_rate { get; set; }

+        public int channels { get; set; }

+        public int bits_per_sample { get; set; }

+        public string r_frame_rate { get; set; }

+        public string avg_frame_rate { get; set; }

+        public string time_base { get; set; }

+        public string start_time { get; set; }

+        public string duration { get; set; }

+        public string bit_rate { get; set; }

+

+        public int width { get; set; }

+        public int height { get; set; }

+        public int has_b_frames { get; set; }

+        public string sample_aspect_ratio { get; set; }

+        public string display_aspect_ratio { get; set; }

+        public string pix_fmt { get; set; }

+        public int level { get; set; }

+        public MediaTags tags { get; set; }

+    }

+

+    public class MediaFormat

+    {

+        public string filename { get; set; }

+        public int nb_streams { get; set; }

+        public string format_name { get; set; }

+        public string format_long_name { get; set; }

+        public string start_time { get; set; }

+        public string duration { get; set; }

+        public string size { get; set; }

+        public string bit_rate { get; set; }

+        public MediaTags tags { get; set; }

+    }

+

+    public class MediaTags

+    {

+        public string title { get; set; }

+        public string comment { get; set; }

+        public string artist { get; set; }

+        public string album { get; set; }

+        public string album_artist { get; set; }

+        public string composer { get; set; }

+        public string copyright { get; set; }

+        public string publisher { get; set; }

+        public string track { get; set; }

+        public string disc { get; set; }

+        public string genre { get; set; }

+        public string date { get; set; }

+        public string language { get; set; }

+    }

+}

diff --git a/MediaBrowser.Controller/Kernel.cs b/MediaBrowser.Controller/Kernel.cs
index a9e536c7b..21405e572 100644
--- a/MediaBrowser.Controller/Kernel.cs
+++ b/MediaBrowser.Controller/Kernel.cs
@@ -5,7 +5,6 @@ using System.IO;
 using System.Linq;

 using System.Security.Cryptography;

 using System.Text;

-using MediaBrowser.Common.Configuration;

 using MediaBrowser.Common.Kernel;

 using MediaBrowser.Controller.Configuration;

 using MediaBrowser.Controller.Events;

diff --git a/MediaBrowser.Controller/MediaBrowser.Controller.csproj b/MediaBrowser.Controller/MediaBrowser.Controller.csproj
index 580b4d7b5..048f6993b 100644
--- a/MediaBrowser.Controller/MediaBrowser.Controller.csproj
+++ b/MediaBrowser.Controller/MediaBrowser.Controller.csproj
@@ -52,6 +52,8 @@
     <Compile Include="Configuration\ServerApplicationPaths.cs" />

     <Compile Include="Configuration\ServerConfiguration.cs" />

     <Compile Include="Events\ItemResolveEventArgs.cs" />

+    <Compile Include="FFMpeg\FFProbe.cs" />

+    <Compile Include="FFMpeg\FFProbeResult.cs" />

     <Compile Include="IO\DirectoryWatchers.cs" />

     <Compile Include="IO\Shortcut.cs" />

     <Compile Include="Library\ItemController.cs" />