share MessageEngine instance

Share MessageEngine instance among clients in the
same process using a common socket (same url).

- add MessageEngineFactory class;
- extend std::unordered_map<> to use QString as
key;
- use std::shared_ptr<MessageEngine> to share
ownership among MessageEngineFactory and the
engine clients;
- force MessagEngine parent object null to avoid
life cycle dependency on a parent;
- protect insertions & deletions in m_calls map;

Also, not directly related but as part of testing
these changes: cleanup on voice to remove
superflous model sorting (there's just one voice
model for alexa voice agent).

Bug-AGL: SPEC-3112
Signed-off-by: Raquel Medina <raquel.medina@konsulko.com>
Change-Id: Ie2304453dc37723dac13d256286eeb85f84ca2ab

1 files changed, 1 insertions, 1 deletions

diff --git a/radio/radio.h b/radio/radio.h
index 77b78d2..b38d9d3 100644
--- a/radio/radio.h
+++ b/radio/radio.h
@@ -76,7 +76,7 @@ class Radio : public QObject
 	void frequencyStepChanged(int frequencyStep);
 
     private:
-        MessageEngine *m_mloop;
+        std::shared_ptr<MessageEngine> m_mloop;
         QQmlContext *m_context;
 
 	unsigned int m_band;