[sushi] media-bin: add a way to access the tag list

[Cosimo Cecchi <cosimoc src gnome org>]

commit bd6145f54a5d9321997e89106b579b082d9ff62c
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Wed Jun 19 14:24:39 2019 -0700

    media-bin: add a way to access the tag list
    
    Add a signal for when tags are updated, together with getters for
    video and audio tags.

 src/libsushi/sushi-media-bin.c | 32 ++++++++++++++++++++++++++++++++
 src/libsushi/sushi-media-bin.h |  3 +++
 2 files changed, 35 insertions(+)
---
diff --git a/src/libsushi/sushi-media-bin.c b/src/libsushi/sushi-media-bin.c
index 35dd52c..b5e00da 100644
--- a/src/libsushi/sushi-media-bin.c
+++ b/src/libsushi/sushi-media-bin.c
@@ -168,6 +168,7 @@ enum
 {
   ERROR,
   SIZE_CHANGE,
+  TAGS_CHANGE,
   LAST_SIGNAL
 };
 
@@ -1213,6 +1214,17 @@ sushi_media_bin_class_init (SushiMediaBinClass *klass)
                     0, NULL, NULL, NULL,
                     G_TYPE_NONE, 0);
 
+  /**
+   * SushiMediaBin::tags-change:
+   * @self: the #SushiMediaBin which received the signal.
+   */
+  sushi_media_bin_signals[TAGS_CHANGE] =
+      g_signal_new ("tags-change",
+                    G_TYPE_FROM_CLASS (object_class),
+                    G_SIGNAL_RUN_LAST,
+                    0, NULL, NULL, NULL,
+                    G_TYPE_NONE, 0);
+
   /* Action signals for key bindings */
   SMB_DEFINE_ACTION_SIGNAL (object_class, "toggle", sushi_media_bin_action_toggle, 1, G_TYPE_STRING);
   SMB_DEFINE_ACTION_SIGNAL (object_class, "seek", sushi_media_bin_action_seek, 1, G_TYPE_INT);
@@ -2115,6 +2127,26 @@ SMB_DEFINE_SETTER_FULL (gdouble, volume, VOLUME,
   gtk_adjustment_set_value (priv->volume_adjustment, volume),
 )
 
+/**
+ * sushi_media_bin_get_audio_tags:
+ * @self: a #SushiMediaBin
+ *
+ * Returns a #GstTagList with the audio tags for the played media
+ */
+SMB_DEFINE_GETTER_FULL (GstTagList *, audio_tags, NULL,
+  return (SMB_PRIVATE (self)->audio_tags);
+)
+
+/**
+ * sushi_media_bin_get_video_tags:
+ * @self: a #SushiMediaBin
+ *
+ * Returns a #GstTagList with the video tags for the played media
+ */
+SMB_DEFINE_GETTER_FULL (GstTagList *, video_tags, NULL,
+  return (SMB_PRIVATE (self)->video_tags);
+)
+
 /**
  * sushi_media_bin_play:
  * @self: a #SushiMediaBin
diff --git a/src/libsushi/sushi-media-bin.h b/src/libsushi/sushi-media-bin.h
index ca15533..900675d 100644
--- a/src/libsushi/sushi-media-bin.h
+++ b/src/libsushi/sushi-media-bin.h
@@ -26,6 +26,7 @@
 
 #pragma once
 
+#include <gst/gst.h>
 #include <gtk/gtk.h>
 
 G_BEGIN_DECLS
@@ -63,6 +64,8 @@ const gchar   *sushi_media_bin_get_description      (SushiMediaBin *self);
 void           sushi_media_bin_set_description      (SushiMediaBin *self,
                                                      const gchar *description);
 
+GstTagList    *sushi_media_bin_get_audio_tags       (SushiMediaBin *self);
+GstTagList    *sushi_media_bin_get_video_tags       (SushiMediaBin *self);
 
 void           sushi_media_bin_play                 (SushiMediaBin *self);
 void           sushi_media_bin_pause                (SushiMediaBin *self);