toc: add more entry types

Make entry types less abstract.

https://bugzilla.gnome.org/show_bug.cgi?id=678742

docs/gst/gstreamer-sections.txt

@@ -2726,6 +2726,11 @@ gst_toc_find_entry
 gst_toc_entry_get_start_stop
 gst_toc_entry_set_start_stop
 gst_toc_entry_type_get_nick
+gst_toc_entry_get_entry_type
+gst_toc_entry_is_alternative
+gst_toc_entry_is_sequence
+GST_TOC_ENTRY_TYPE_IS_ALTERNATIVE
+GST_TOC_ENTRY_TYPE_IS_SEQUENCE
 <SUBSECTION Standard>
 GST_TYPE_TOC
 GST_TYPE_TOC_ENTRY

gst/gsttoc.c

@@ -880,19 +880,75 @@ gst_toc_entry_get_start_stop (const GstTocEntry * entry, gint64 * start,
  *
  * Converts @type to a string representation.
  *
- * Returns: Returns the human-readable @type. Can be NULL if an error occurred.
- * Since: 0.11.92
+ * Returns: Returns a human-readable string for @type. This string is
+ *    only for debugging purpose and should not be displayed in a user
+ *    interface.
  */
 const gchar *
 gst_toc_entry_type_get_nick (GstTocEntryType type)
 {
-  const gchar *entry_types[] = { "chapter", "edition" };
-
-  g_return_val_if_fail ((gint) type >= 0
-      && (gint) type < G_N_ELEMENTS (entry_types), NULL);
-  return entry_types[type];
+  switch (type) {
+    case GST_TOC_ENTRY_TYPE_ANGLE:
+      return "angle";
+    case GST_TOC_ENTRY_TYPE_VERSION:
+      return "version";
+    case GST_TOC_ENTRY_TYPE_EDITION:
+      return "edition";
+    case GST_TOC_ENTRY_TYPE_TITLE:
+      return "title";
+    case GST_TOC_ENTRY_TYPE_TRACK:
+      return "track";
+    case GST_TOC_ENTRY_TYPE_CHAPTER:
+      return "chapter";
+    default:
+      break;
+  }
+  return "invalid";
 }
 
+/**
+ * gst_toc_entry_get_entry_type:
+ * @entry: a #GstTocEntry
+ *
+ * Returns: @entry's entry type
+ */
+GstTocEntryType
+gst_toc_entry_get_entry_type (GstTocEntry * entry)
+{
+  g_return_val_if_fail (entry != NULL, GST_TOC_ENTRY_TYPE_INVALID);
+
+  return entry->type;
+}
+
+/**
+ * gst_toc_entry_is_alternative:
+ * @entry: a #GstTocEntry
+ *
+ * Returns: %TRUE if @entry's type is an alternative type, otherwise %FALSE
+ */
+gboolean
+gst_toc_entry_is_alternative (GstTocEntry * entry)
+{
+  g_return_val_if_fail (entry != NULL, FALSE);
+
+  return GST_TOC_ENTRY_TYPE_IS_ALTERNATIVE (entry->type);
+}
+
+/**
+ * gst_toc_entry_is_sequence:
+ * @entry: a #GstTocEntry
+ *
+ * Returns: %TRUE if @entry's type is a sequence type, otherwise %FALSE
+ */
+gboolean
+gst_toc_entry_is_sequence (GstTocEntry * entry)
+{
+  g_return_val_if_fail (entry != NULL, FALSE);
+
+  return GST_TOC_ENTRY_TYPE_IS_SEQUENCE (entry->type);
+}
+
+
 gboolean
 __gst_toc_structure_get_updated (const GstStructure * toc)
 {

gst/gsttoc.h

@@ -38,16 +38,31 @@ typedef struct _GstToc GstToc;
 
 /**
  * GstTocEntryType:
- * @GST_TOC_ENTRY_TYPE_CHAPTER: a chapter type entry.
- * @GST_TOC_ENTRY_TYPE_EDITION: an edition entry (angle or alternative in other terms).
+ * @GST_TOC_ENTRY_TYPE_ANGLE: entry is an angle (i.e. an alternative)
+ * @GST_TOC_ENTRY_TYPE_VERSION: entry is a version (i.e. alternative)
+ * @GST_TOC_ENTRY_TYPE_EDITION: entry is an edition (i.e. alternative)
+ * @GST_TOC_ENTRY_TYPE_INVALID: invalid entry type value
+ * @GST_TOC_ENTRY_TYPE_TITLE: entry is a title (i.e. a part of a sequence)
+ * @GST_TOC_ENTRY_TYPE_TRACK: entry is a track (i.e. a part of a sequence)
+ * @GST_TOC_ENTRY_TYPE_CHAPTER: entry is a chapter (i.e. a part of a sequence)
  *
- * The different types of TOC entry.
+ * The different types of TOC entries (see #GstTocEntry).
+ *
+ * There are two types of TOC entries: alternatives or parts in a sequence.
  */
 typedef enum {
-  GST_TOC_ENTRY_TYPE_CHAPTER     = 0,
-  GST_TOC_ENTRY_TYPE_EDITION     = 1
+  GST_TOC_ENTRY_TYPE_ANGLE       = -3,
+  GST_TOC_ENTRY_TYPE_VERSION     = -2,
+  GST_TOC_ENTRY_TYPE_EDITION     = -1,
+  GST_TOC_ENTRY_TYPE_INVALID     = 0,
+  GST_TOC_ENTRY_TYPE_TITLE       = 1,
+  GST_TOC_ENTRY_TYPE_TRACK       = 2,
+  GST_TOC_ENTRY_TYPE_CHAPTER     = 3,
 } GstTocEntryType;
 
+#define GST_TOC_ENTRY_TYPE_IS_ALTERNATIVE(entry_type)  (entry_type < 0)
+#define GST_TOC_ENTRY_TYPE_IS_SEQUENCE(entry_type)     (entry_type > 0)
+
 /**
  * GstTocEntry:
  * @uid: unique (for a whole TOC) id of the entry. This value should be persistent and
@@ -124,6 +139,11 @@ GstTocEntry *   gst_toc_entry_new_with_pad      (GstTocEntryType type, const gch
 
 GstTocEntry *   gst_toc_find_entry              (const GstToc *toc, const gchar *uid);
 
+GstTocEntryType gst_toc_entry_get_entry_type    (GstTocEntry * entry);
+
+gboolean        gst_toc_entry_is_alternative    (GstTocEntry * entry);
+gboolean        gst_toc_entry_is_sequence       (GstTocEntry * entry);
+
 void            gst_toc_entry_set_start_stop    (GstTocEntry *entry, gint64 start, gint64 stop);
 gboolean        gst_toc_entry_get_start_stop    (const GstTocEntry *entry, gint64 *start, gint64 *stop);
 const gchar *   gst_toc_entry_type_get_nick     (GstTocEntryType type);

win32/common/libgstreamer.def

@@ -1128,8 +1128,11 @@ EXPORTS
 	gst_task_start
 	gst_task_state_get_type
 	gst_task_stop
+	gst_toc_entry_get_entry_type
 	gst_toc_entry_get_start_stop
 	gst_toc_entry_get_type
+	gst_toc_entry_is_alternative
+	gst_toc_entry_is_sequence
 	gst_toc_entry_new
 	gst_toc_entry_new_with_pad
 	gst_toc_entry_set_start_stop