From d908c7a9476fcc9f093238a4a85f98f5727ac314 Mon Sep 17 00:00:00 2001
From: TangoCash <eric@loxat.de>
Date: Sat, 28 Oct 2017 18:10:04 +0200
Subject: [PATCH] armbox: gstreamer tags support

---
 libarmbox/playback_gst.cpp | 62 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/libarmbox/playback_gst.cpp b/libarmbox/playback_gst.cpp
index 8b0b832..cd44af0 100644
--- a/libarmbox/playback_gst.cpp
+++ b/libarmbox/playback_gst.cpp
@@ -230,6 +230,12 @@ GstBusSyncReply Gst_bus_call(GstBus * bus, GstMessage *msg, gpointer user_data)
 		result = gst_tag_list_merge(m_stream_tags, tags, GST_TAG_MERGE_REPLACE);
 		if (result)
 		{
+			if (m_stream_tags && gst_tag_list_is_equal(m_stream_tags, result))
+			{
+				gst_tag_list_free(tags);
+				gst_tag_list_free(result);
+				break;
+			}
 			if (m_stream_tags)
 				gst_tag_list_free(m_stream_tags);
 			m_stream_tags = result;
@@ -949,6 +955,62 @@ void cPlayback::GetMetadata(std::vector<std::string> &keys, std::vector<std::str
 {
 	keys.clear();
 	values.clear();
+	if (gst_tag_list_is_empty (m_stream_tags))
+		return;
+
+	for (guint i = 0, icnt = gst_tag_list_n_tags(m_stream_tags); i < icnt; i++)
+	{
+		const gchar *name = gst_tag_list_nth_tag_name(m_stream_tags, i);
+		if (!name)
+		{
+			continue;
+		}
+
+		for (guint j = 0, jcnt = gst_tag_list_get_tag_size(m_stream_tags, name); j < jcnt; j++)
+		{
+			const GValue *val;
+
+			val = gst_tag_list_get_value_index(m_stream_tags, name, j);
+
+			if (G_VALUE_HOLDS_STRING(val))
+			{
+				keys.push_back(name);
+				values.push_back(g_value_get_string(val));
+			}
+			else if (G_VALUE_HOLDS_UINT(val))
+			{
+				char buffer [50];
+				keys.push_back(name);
+				sprintf (buffer, "%u", g_value_get_uint(val));
+				values.push_back(buffer);
+			}
+			else if (G_VALUE_HOLDS_DOUBLE(val))
+			{
+				char buffer [50];
+				keys.push_back(name);
+				sprintf (buffer, "%f", g_value_get_double(val));
+				values.push_back(buffer);
+			}
+			else if (G_VALUE_HOLDS_BOOLEAN(val))
+			{
+				keys.push_back(name);
+				values.push_back(g_value_get_boolean(val) ? "true" : "false");
+			}
+			else if (GST_VALUE_HOLDS_DATE_TIME(val))
+			{
+				GstDateTime *dt = (GstDateTime *) g_value_get_boxed(val);
+				keys.push_back(name);
+				values.push_back(gst_date_time_to_iso8601_string(dt));
+			}
+			else if (G_VALUE_HOLDS(val, G_TYPE_DATE))
+			{
+				keys.push_back(name);
+				values.push_back(gst_value_serialize(val));
+			}
+
+		}
+	}
+	printf("%s:%s %d tags found\n", FILENAME, __func__, (int)keys.size());
 }
 
 void cPlayback::FindAllTeletextsubtitlePids(int *, unsigned int *numpids, std::string *, int *, int *)