[gnome-sound-recorder] recording: set the extension on export

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit c84fb024c6d91d94bae36b5edf72799c6e7f3440
Author: Kavan Mevada <kavanmevada gmail com>
Date:   Wed Sep 2 22:06:01 2020 +0530

    recording: set the extension on export
    
    fixes: #17

 src/recorder.js  | 16 ++++++++++------
 src/recording.js | 15 ++++++++++++++-
 src/row.js       |  2 +-
 3 files changed, 25 insertions(+), 8 deletions(-)
---
diff --git a/src/recorder.js b/src/recorder.js
index bfaaccb..a907a9b 100644
--- a/src/recorder.js
+++ b/src/recorder.js
@@ -26,27 +26,32 @@ var EncodingProfiles = [
     { name: 'VORBIS',
         containerCaps: 'application/ogg;audio/ogg;video/ogg',
         audioCaps: 'audio/x-vorbis',
-        mimeType: 'audio/x-vorbis' },
+        contentType: 'audio/x-vorbis+ogg',
+        extension: 'ogg' },
 
     { name: 'OPUS',
         containerCaps: 'application/ogg',
         audioCaps: 'audio/x-opus',
-        mimeType: 'audio/x-opus' },
+        contentType: 'audio/x-opus+ogg',
+        extension: 'opus' },
 
     { name: 'FLAC',
         containerCaps: 'audio/x-flac',
         audioCaps: 'audio/x-flac',
-        mimeType: 'audio/x-flac' },
+        contentType: 'audio/flac',
+        extension: 'flac' },
 
     { name: 'MP3',
         containerCaps: 'application/x-id3',
         audioCaps: 'audio/mpeg,mpegversion=(int)1,layer=(int)3',
-        mimeType: 'audio/mpeg' },
+        contentType: 'audio/mpeg',
+        extension: 'mp3' },
 
     { name: 'M4A',
         containerCaps: 'video/quicktime,variant=(string)iso',
         audioCaps: 'audio/mpeg,mpegversion=(int)4',
-        mimeType: 'audio/mpeg' },
+        contentType: 'video/mp4',
+        extension: 'm4a' },
 ];
 
 var AudioChannels = {
@@ -108,7 +113,6 @@ var Recorder = new GObject.registerClass({
             this.file = RecordingsDir.get_child_for_display_name(_('Recording %d').format(index++));
         } while (this.file.query_exists(null));
 
-
         this.recordBus = this.pipeline.get_bus();
         this.recordBus.add_signal_watch();
         this.handlerId = this.recordBus.connect('message', (_, message) => {
diff --git a/src/recording.js b/src/recording.js
index 273d2fe..d234b6d 100644
--- a/src/recording.js
+++ b/src/recording.js
@@ -2,6 +2,7 @@
 const { Gio, GLib, GObject, Gst, GstPbutils } = imports.gi;
 const { CacheDir } = imports.application;
 const ByteArray = imports.byteArray;
+const Recorder = imports.recorder;
 
 var Recording = new GObject.registerClass({
     Signals: {
@@ -27,7 +28,15 @@ var Recording = new GObject.registerClass({
         this._loadedPeaks = [];
         super._init({});
 
-        let info = file.query_info('time::created,time::modified', 0, null);
+        let info = file.query_info('time::created,time::modified,standard::content-type', 0, null);
+        const contentType = info.get_attribute_string('standard::content-type');
+
+        for (let profile of Recorder.EncodingProfiles) {
+            if (profile.contentType === contentType) {
+                this._extension = profile.extension;
+                break;
+            }
+        }
 
         let timeModified = info.get_attribute_uint64('time::modified');
         let timeCreated = info.get_attribute_uint64('time::created');
@@ -55,6 +64,10 @@ var Recording = new GObject.registerClass({
         }
     }
 
+    get extension() {
+        return this._extension;
+    }
+
     get timeModified() {
         return this._timeModified;
     }
diff --git a/src/row.js b/src/row.js
index c4076bf..e35b6a9 100644
--- a/src/row.js
+++ b/src/row.js
@@ -65,7 +65,7 @@ var Row = GObject.registerClass({
 
         exportAction.connect('activate', () => {
             const dialog = Gtk.FileChooserNative.new(_('Export Recording'), null, 
Gtk.FileChooserAction.SAVE, _('_Export'), _('_Cancel'));
-            dialog.set_current_name(this._recording.name);
+            dialog.set_current_name(`${this._recording.name}.${this._recording.extension}`);
             dialog.connect('response', (_dialog, _response) => {
                 if (_response === Gtk.ResponseType.ACCEPT) {
                     const dest = dialog.get_file();