add ring ready flag to core

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@4221 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/include/switch_channel.h

@@ -330,6 +330,13 @@ SWITCH_DECLARE(switch_status_t) switch_channel_perform_mark_pre_answered(switch_
 */								
 #define switch_channel_pre_answer(channel) switch_channel_perform_pre_answer(channel, __FILE__, __SWITCH_FUNC__, __LINE__)
 
+/*!
+  \brief Indicate a channel is ready to provide ringback
+  \param channel channel
+  \return SWITCH_STATUS_SUCCESS
+*/								
+#define switch_channel_mark_ring_ready(channel) switch_channel_perform_mark_ring_ready(channel, __FILE__, __SWITCH_FUNC__, __LINE__)
+
 /*!
   \brief add a state handler table to a given channel
   \param channel channel on which to add the state handler table

src/include/switch_types.h

@@ -487,6 +487,7 @@ CF_SUSPEND		= (1 << 14) - Suspend i/o
 CF_EVENT_PARSE  = (1 << 15) - Suspend control events
 CF_NO_INDICATE  = (1 << 16) - Disable Indications
 CF_REPEAT_STATE = (1 << 17) - Tell the state machine to repeat a state
+CF_RING_READY   = (1 << 18) - Channel is ready to send ringback
 </pre>
  */
 
@@ -508,7 +509,8 @@ typedef enum {
 	CF_SUSPEND		= (1 << 14),
 	CF_EVENT_PARSE	= (1 << 15),
 	CF_NO_INDICATE	= (1 << 16),
-    CF_REPEAT_STATE = (1 << 17)
+    CF_REPEAT_STATE = (1 << 17),
+	CF_RING_READY   = (1 << 18)
 } switch_channel_flag_t;