Cast: Add JS API to get raw events logs from cast extension.

chrome/common/extensions/api/cast_streaming_rtp_stream.idl

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // The <code>chrome.cast.streaming.rtpStream</code> API allows configuration
 // of encoding parameters and RTP parameters used in a Cast streaming
 // session.
 namespace cast.streaming.rtpStream {
   // Params for audio and video codec.
   dictionary CodecSpecificParams {
@@ skipping 42 matching lines @@
     // RTP payload params.
     RtpPayloadParams payload;
 
     DOMString[] rtcpFeatures;
   };
 
   // Callback from the <code>create</code> method.
   // |id| : The ID for the RTP stream.
   callback CreateCallback = void (long streamId);
 
+  // Callback from the <code>getRawEvents</code> method.
+  // |rawEvents|: events encoded in protocol buffer format along with other 
+  // data serialized as a string.
+  // The serialization format can be found at 
+  // media/cast/logging/log_serializer.cc.
+  callback GetRawEventsCallback = void (DOMString rawEvents);
+  
+  // Callback from the <code>getStats</code> method.
+  // |rawEvents|: stats encoded in protocol buffer format along with other 
+  // data serialized as a string.
+  // The serialization format can be found at 
+  // media/cast/logging/log_serializer.cc.
+  callback GetStatsCallback = void (DOMString stats);
+
   interface Functions {
     // Destroys a Cast RTP stream.
     // |streamId| : The RTP stream ID.
     [nocompile] static void destroy(long streamId);
 
     // Returns an array of supported parameters with default values.
     // This includes a list of supported codecs on this platform and
     // corresponding encoding and RTP parameters.
     // |streamId| : The RTP stream ID.
     [nocompile] static RtpParams[] getSupportedParams(long streamId);
 
     // Activates the RTP stream by providing the parameters.
     // |streamId| : The RTP stream ID.
     // |params| : Parameters set for this stream.
     [nocompile] static void start(long streamId, RtpParams params);
 
     // Stops activity on the specified stream.
     // |streamId| : The RTP stream ID.
     [nocompile] static void stop(long streamId);
+
+    // Enables / disables logging for a stream.
+    // |enable|: If true, enables logging. Otherwise disables logging.
+    [nocompile] static void toggleLogging(long streamId, boolean enable);
+    
+    // Get raw events for a stream in the current session.
+    // |startLogging()| must have been called before.
+    // |streamId|: Stream to get events for.
+    // |callback|: Called with the raw events Blob.
+    [nocompile] static void getRawEvents(
+        long streamId, GetRawEventsCallback callback);
+    
+    // Get stats for a stream in the current session.
+    // |startLogging()| must have been called before.
+    // |streamId|: Stream to get stats for.
+    // |callback|: Called with the stats Blob.
+    [nocompile] static void getStats(
+        long streamId, GetStatsCallback callback);
   };
 
   interface Events {
     // Event fired when a Cast RTP stream has started.
     // |streamId| : The ID of the RTP stream.
     static void onStarted(long streamId);
 
     // Event fired when a Cast RTP stream has stopped.
     // |streamId| : The ID of the RTP stream.
     static void onStopped(long streamId);
 
     // Event fired when a Cast RTP stream has error.
     // |streamId| : The ID of the RTP stream.
     // |errorString| : The error info.
     static void onError(long streamId, DOMString errorString);
   };
 };