This patch adds support for controlling a playback operation from the

Asterisk REST interface.

This adds the /playback/{playbackId}/control resource, which may be
POSTed to to pause, unpause, reverse, forward or restart the media
playback.

Attempts to control a playback that is not currently playing will
either return a 404 Not Found (because the playback object no longer
exists) or a 409 Conflict (because the playback object is still in the
queue to be played).

This patch also adds skipms and offsetms parameters to the
/channels/{channelId}/play resource.

(closes issue ASTERISK-21587)
Review: https://reviewboard.asterisk.org/r/2559


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@389603 65c4cc65-6c06-0410-ace0-fbb531ad65f3

rest-api/api-docs/channels.json

@@ -408,11 +408,28 @@
 						},
 						{
 							"name": "lang",
-							"description": "For sounds, selects language for sound",
+							"description": "For sounds, selects language for sound.",
 							"paramType": "query",
 							"required": false,
 							"allowMultiple": false,
 							"dataType": "string"
+						},
+						{
+							"name": "offsetms",
+							"description": "Number of media to skip before playing.",
+							"paramType": "query",
+							"required": false,
+							"allowMultiple": false,
+							"dataType": "int"
+						},
+						{
+							"name": "skipms",
+							"description": "Number of milliseconds to skip for forward/reverse operations.",
+							"paramType": "query",
+							"required": false,
+							"allowMultiple": false,
+							"dataType": "int",
+							"defaultValue": 3000
 						}
 					],
 					"errorResponses": [