[banshee] gst#: Add AudioCdRipper

[Bertrand Lorentz <blorentz src gnome org>]

commit 6b61ba3611b9da8a740ca5de52b7b64056d2da1a
Author: Olivier Dufour <olivier duff gmail com>
Date:   Wed May 25 23:06:40 2011 +0200

    gst#: Add AudioCdRipper
    
    Signed-off-by: Bertrand Lorentz <bertrand lorentz gmail com>

 .../Banshee.GStreamerSharp.csproj                  |    1 +
 .../Banshee.GStreamerSharp/AudioCdRipper.cs        |  432 ++++++++++++++++++++
 src/Backends/Banshee.GStreamerSharp/Makefile.am    |    1 +
 3 files changed, 434 insertions(+), 0 deletions(-)
---
diff --git a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp.csproj b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp.csproj
index b87d04e..dc063bc 100644
--- a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp.csproj
+++ b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp.csproj
@@ -73,6 +73,7 @@
     <Compile Include="Banshee.GStreamerSharp\PlayerEngine.cs" />
     <Compile Include="Banshee.GStreamerSharp\BpmDetector.cs" />
     <Compile Include="Banshee.GStreamerSharp\CddaManager.cs" />
+    <Compile Include="Banshee.GStreamerSharp\AudioCdRipper.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
 </Project>
diff --git a/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/AudioCdRipper.cs b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/AudioCdRipper.cs
new file mode 100644
index 0000000..132f1e5
--- /dev/null
+++ b/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/AudioCdRipper.cs
@@ -0,0 +1,432 @@
+//
+// AudioCdRipper.cs
+//
+// Author:
+//   Olivier Dufour <olivier duff gmail com>
+//
+// Copyright (c) 2011 Olivier Dufour
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+using System;
+using System.Runtime.InteropServices;
+using Mono.Unix;
+
+using Hyena;
+using Banshee.Base;
+using Banshee.Collection;
+using Banshee.ServiceStack;
+using Banshee.MediaEngine;
+using Banshee.MediaProfiles;
+using Banshee.Configuration.Schema;
+
+using Gst;
+using Banshee.Streaming;
+using System.Collections;
+
+namespace Banshee.GStreamerSharp
+{
+    public class AudioCdRipper : IAudioCdRipper
+    {
+        private string encoder_pipeline;
+        private string output_extension;
+        private string output_path;
+        private TrackInfo current_track;
+        private string device;
+        private int paranoia_mode;
+        private System.Timers.Timer timer;
+
+        Gst.Pipeline pipeline;
+        Element cddasrc;
+        Bin encoder;
+        Element filesink;
+
+        public event AudioCdRipperProgressHandler Progress;
+        public event AudioCdRipperTrackFinishedHandler TrackFinished;
+        public event AudioCdRipperErrorHandler Error;
+
+        public void Begin (string device, bool enableErrorCorrection)
+        {
+            try {
+                this.device = device;
+                this.paranoia_mode = enableErrorCorrection ? 255 : 0;
+                Profile profile = null;
+                ProfileConfiguration config = ServiceManager.MediaProfileManager.GetActiveProfileConfiguration ("cd-importing");
+
+                if (config != null) {
+                    profile = config.Profile;
+                } else {
+                    profile = ServiceManager.MediaProfileManager.GetProfileForMimeType ("audio/vorbis")
+                        ?? ServiceManager.MediaProfileManager.GetProfileForMimeType ("audio/flac");
+                    if (profile != null) {
+                        Log.InformationFormat ("Using default/fallback encoding profile: {0}", profile.Name);
+                        ProfileConfiguration.SaveActiveProfile (profile, "cd-importing");
+                    }
+                }
+
+                if (profile != null) {
+                    encoder_pipeline = profile.Pipeline.GetProcessById ("gstreamer");
+                    output_extension = profile.OutputFileExtension;
+                }
+
+                if (String.IsNullOrEmpty (encoder_pipeline)) {
+                    throw new ApplicationException ();
+                }
+                timer = new System.Timers.Timer ();
+                timer.Interval = 200;
+                timer.AutoReset = true;
+                timer.Elapsed += OnTick;
+                Hyena.Log.InformationFormat ("Ripping using encoder profile `{0}' with pipeline: {1}", profile.Name, encoder_pipeline);
+            } catch (Exception e) {
+                throw new ApplicationException (Catalog.GetString ("Could not find an encoder for ripping."), e);
+            }
+        }
+
+        void OnTick (object o, System.Timers.ElapsedEventArgs args)
+        {
+            Format format = Format.Time;
+            State state;
+            long position;
+
+            pipeline.GetState (out state, 0);
+            if (state != State.Playing) {
+                return;
+            }
+
+            if (!cddasrc.QueryPosition (ref format, out position)) {
+                return;
+            }
+
+            RaiseProgress (current_track, TimeSpan.FromSeconds (position / (long)Clock.Second));
+        }
+
+        public void Finish ()
+        {
+            if (output_path != null) {
+                Banshee.IO.File.Delete (new SafeUri (output_path));
+            }
+
+            TrackReset ();
+
+            encoder_pipeline = null;
+            output_extension = null;
+
+            timer.Stop ();
+
+            if (pipeline != null && pipeline is Element) {
+                pipeline.SetState (State.Null);
+                pipeline = null;
+            }
+        }
+
+        public void Cancel ()
+        {
+            Finish ();
+        }
+
+        private void TrackReset ()
+        {
+            current_track = null;
+            output_path = null;
+        }
+
+        private TagList MakeTagList (TrackInfo track)
+        {
+            TagList tags = new TagList ();
+
+            tags.Add (TagMergeMode.Replace, CommonTags.Artist, track.ArtistName);
+            tags.Add (TagMergeMode.Replace, CommonTags.Album, track.AlbumTitle);
+            tags.Add (TagMergeMode.Replace, CommonTags.Title, track.TrackTitle);
+            tags.Add (TagMergeMode.Replace, CommonTags.Genre, track.Genre);
+
+            tags.Add (TagMergeMode.Replace, CommonTags.TrackNumber, (uint)track.TrackNumber);
+            tags.Add (TagMergeMode.Replace, CommonTags.TrackCount, (uint)track.TrackCount);
+            tags.Add (TagMergeMode.Replace, CommonTags.AlbumDiscNumber, (uint)track.DiscNumber);
+            tags.Add (TagMergeMode.Replace, CommonTags.AlbumDiscCount, (uint)track.DiscCount);
+
+            tags.Add (TagMergeMode.Replace, Gst.Tag.Date, track.Year);
+            tags.Add (TagMergeMode.Replace, Gst.Tag.Date, track.ReleaseDate);
+
+            tags.Add (TagMergeMode.Replace, CommonTags.Composer, track.Composer);
+            tags.Add (TagMergeMode.Replace, CommonTags.Copyright, track.Copyright);
+            tags.Add (TagMergeMode.Replace, CommonTags.Comment, track.Comment);
+
+            tags.Add (TagMergeMode.Replace, CommonTags.MusicBrainzTrackId, track.MusicBrainzId);
+            tags.Add (TagMergeMode.Replace, CommonTags.MusicBrainzArtistId, track.ArtistMusicBrainzId);
+            tags.Add (TagMergeMode.Replace, CommonTags.MusicBrainzAlbumId, track.AlbumMusicBrainzId);
+
+            return tags;
+        }
+
+        public void RipTrack (int trackIndex, TrackInfo track, SafeUri outputUri, out bool taggingSupported)
+        {
+            taggingSupported = false;
+            TrackReset ();
+            current_track = track;
+
+            using (TagList tags = MakeTagList (track)) {
+                output_path = String.Format ("{0}.{1}", outputUri.LocalPath, output_extension);
+
+                // Avoid overwriting an existing file
+                int i = 1;
+                while (Banshee.IO.File.Exists (new SafeUri (output_path))) {
+                    output_path = String.Format ("{0} ({1}).{2}", outputUri.LocalPath, i++, output_extension);
+                }
+
+                Log.DebugFormat ("GStreamer ripping track {0} to {1}", trackIndex, output_path);
+
+                if (!ConstructPipeline ()) {
+                    return;
+                }
+
+                // initialize the pipeline, set the sink output location
+                filesink.SetState (State.Null);
+                filesink ["location"] = output_path;
+
+                var version = new System.Version (Banshee.ServiceStack.Application.Version);
+
+                // find an element to do the tagging and set tag data
+                foreach (Element element in encoder.GetAllByInterface (typeof (TagSetter))) {
+                    TagSetter tag_setter = element as TagSetter;
+                    if (tag_setter != null) {
+                        tag_setter.AddTag (TagMergeMode.ReplaceAll, Tag.Encoder,
+                            new Gst.GLib.Value (String.Format ("Banshee {0}", Banshee.ServiceStack.Application.Version)));
+                        tag_setter.AddTag (TagMergeMode.ReplaceAll, Tag.EncoderVersion,
+                            new Gst.GLib.Value ( (version.Major << 16) | (version.Minor << 8) | version.Build));
+
+                        if (tags != null) {
+                            tag_setter.AddTag (tags, TagMergeMode.Append);
+                        }
+
+                        /*if (banshee_is_debugging ()) {
+                            bt_tag_list_dump (gst_tag_setter_get_tag_list (tag_setter));
+                        }*/
+
+                        // We'll warn the user in the UI if we can't tag the encoded audio files
+                        taggingSupported = true;
+                    }
+                }
+
+                // Begin the rip
+                cddasrc ["track"] = trackIndex + 1;
+                pipeline.SetState (State.Playing);
+                timer.Start ();
+            }
+        }
+
+        bool ConstructPipeline ()
+        {
+            Element queue;
+
+            pipeline = new Gst.Pipeline ("pipeline");
+            if (pipeline == null) {
+                RaiseError (current_track, Catalog.GetString ("Could not create pipeline"));
+                return false;
+            }
+
+            cddasrc = ElementFactory.MakeFromUri (URIType.Src, "cdda://1", "cddasrc");
+            if (cddasrc == null) {
+                RaiseError (current_track, Catalog.GetString ("Could not initialize element from cdda URI"));
+                return false;
+            }
+
+            cddasrc ["device"] = device;
+
+            if (cddasrc.HasProperty ("paranoia-mode")) {
+                cddasrc ["paranoia-mode"] = paranoia_mode;
+            }
+
+            try {
+            encoder = (Bin)Parse.BinFromDescription (encoder_pipeline, true);
+            } catch (Exception e) {
+                string err = Catalog.GetString ("Could not create encoder pipeline : {0}");
+                RaiseError (current_track, String.Format (err, e.Message));
+                return false;
+            }
+
+            queue = ElementFactory.Make ("queue", "queue");
+            if (queue == null) {
+                RaiseError (current_track, Catalog.GetString ("Could not create queue plugin"));
+                return false;
+            }
+
+            queue ["max-size-time"] = 120 * Gst.Clock.Second;
+
+            filesink = ElementFactory.Make ("filesink", "filesink");
+            if (filesink == null) {
+                RaiseError (current_track, Catalog.GetString ("Could not create filesink plugin"));
+                return false;
+            }
+
+            pipeline.Add (cddasrc, queue, encoder, filesink);
+
+            if (!Element.Link (cddasrc, queue, encoder, filesink)) {
+                RaiseError (current_track, Catalog.GetString ("Could not link pipeline elements"));
+            }
+
+            pipeline.Bus.AddWatch (OnBusMessage);
+
+            return true;
+        }
+
+        private string ProbeMimeType ()
+        {
+            Iterator elem_iter = ((Bin)encoder).ElementsRecurse;
+            string preferred_mimetype = null;
+            IEnumerator en = elem_iter.GetEnumerator ();
+
+            while (en.MoveNext ()) {
+                Element element = (Element)en.Current;
+                Iterator pad_iter = element.SrcPads;
+                IEnumerator enu = pad_iter.GetEnumerator ();
+
+                while (enu.MoveNext ()) {
+                    Pad pad = (Pad)enu.Current;
+                    Caps caps = pad.Caps;
+                    Structure str = (caps != null ? caps [0] : null);
+
+                    if (str != null) {
+                        string mimetype = str.Name;
+                        int mpeg_layer;
+
+                        Gst.GLib.Value val = str.GetValue ("mpegversion");
+
+                        // Prefer and adjust audio/mpeg, leaving MP3 as audio/mpeg
+                        if (mimetype.StartsWith ("audio/mpeg")) {
+                            mpeg_layer = (Int32)val.Val;
+                            switch (mpeg_layer) {
+                                case 2: mimetype = "audio/mp2"; break;
+                                case 4: mimetype = "audio/mp4"; break;
+                                default: break;
+                            }
+
+                            preferred_mimetype = mimetype;
+
+                        // If no preferred type set and it's not RAW, prefer it
+                        } else if (preferred_mimetype == null &&
+                            !mimetype.StartsWith ("audio/x-raw")) {
+                            preferred_mimetype = mimetype;
+
+                        // Always prefer application containers
+                        } else if (mimetype.StartsWith ("application/")) {
+                            preferred_mimetype = mimetype;
+                        }
+                    }
+                }
+            }
+            return preferred_mimetype;
+        }
+
+        private void RefreshTrackMimeType (string mimetype)
+        {
+            if (current_track == null)
+                return;
+
+            if (mimetype != null) {
+                string [] split = mimetype.Split (';', '.', ' ', '\t');
+                if (split != null && split.Length > 0) {
+                    current_track.MimeType = split[0].Trim ();
+                } else {
+                    current_track.MimeType = mimetype.Trim ();
+                }
+            }
+        }
+
+        private bool OnBusMessage (Bus bus, Message msg)
+        {
+            switch (msg.Type) {
+                case MessageType.Eos:
+                    pipeline.SetState (State.Null);
+                    timer.Stop ();
+                    OnNativeFinished ();
+                    break;
+
+                case MessageType.StateChanged:
+                    State old_state, new_state, pending_state;
+                    msg.ParseStateChanged (out old_state, out new_state, out pending_state);
+                    if (old_state == State.Ready && new_state == State.Paused && pending_state == State.Playing) {
+                        string mimetype = ProbeMimeType ();
+                        if (mimetype == null)
+                            return true;
+                        Log.Information ("Ripper : Found Mime Type for encoded content: {0}", mimetype);
+                        RefreshTrackMimeType (mimetype);
+                    }
+                    break;
+
+                case MessageType.Error:
+                    Enum error_type;
+                    string err_msg, debug;
+                    msg.ParseError (out error_type, out err_msg, out debug);
+                    RaiseError (current_track, String.Format ("{0} : {1}", err_msg, debug));
+                    timer.Stop ();
+                    break;
+            }
+
+            return true;
+        }
+
+        protected virtual void RaiseProgress (TrackInfo track, TimeSpan ellapsedTime)
+        {
+            AudioCdRipperProgressHandler handler = Progress;
+            if (handler != null) {
+                handler (this, new AudioCdRipperProgressArgs (track, ellapsedTime, track.Duration));
+            }
+        }
+
+        protected virtual void RaiseTrackFinished (TrackInfo track, SafeUri outputUri)
+        {
+            AudioCdRipperTrackFinishedHandler handler = TrackFinished;
+            if (handler != null) {
+                handler (this, new AudioCdRipperTrackFinishedArgs (track, outputUri));
+            }
+        }
+
+        protected virtual void RaiseError (TrackInfo track, string message)
+        {
+            AudioCdRipperErrorHandler handler = Error;
+            if (handler != null) {
+                handler (this, new AudioCdRipperErrorArgs (track, message));
+            }
+        }
+
+        private void OnNativeMimeType (IntPtr ripper, IntPtr mimetype)
+        {
+            if (mimetype != IntPtr.Zero && current_track != null) {
+                string type = GLib.Marshaller.Utf8PtrToString (mimetype);
+                if (type != null) {
+                    string [] split = type.Split (';', '.', ' ', '\t');
+                    if (split != null && split.Length > 0) {
+                        current_track.MimeType = split[0].Trim ();
+                    } else {
+                        current_track.MimeType = type.Trim ();
+                    }
+                }
+            }
+        }
+
+        private void OnNativeFinished ()
+        {
+            SafeUri uri = new SafeUri (output_path);
+            TrackInfo track = current_track;
+
+            TrackReset ();
+
+            RaiseTrackFinished (track, uri);
+        }
+    }
+}
diff --git a/src/Backends/Banshee.GStreamerSharp/Makefile.am b/src/Backends/Banshee.GStreamerSharp/Makefile.am
index 5615175..9405300 100644
--- a/src/Backends/Banshee.GStreamerSharp/Makefile.am
+++ b/src/Backends/Banshee.GStreamerSharp/Makefile.am
@@ -4,6 +4,7 @@ LINK = $(REF_BACKEND_GSTREAMER) $(GST_SHARP_LIBS)
 INSTALL_DIR = $(BACKENDS_INSTALL_DIR)
 
 SOURCES =  \
+	Banshee.GStreamerSharp/AudioCdRipper.cs \
 	Banshee.GStreamerSharp/BpmDetector.cs \
 	Banshee.GStreamerSharp/CddaManager.cs \
 	Banshee.GStreamerSharp/PlayerEngine.cs