cast: Support for low-latency interactive mode

chrome/renderer/media/cast_rtp_stream.h

 // 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.
 
 #ifndef CHROME_RENDERER_MEDIA_CAST_RTP_STREAM_H_
 #define CHROME_RENDERER_MEDIA_CAST_RTP_STREAM_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 28 matching lines @@
   int payload_type;
 
   // Maximum latency in milliseconds. Implemetation tries to keep latency
   // under this threshold.
   int max_latency_ms;
 
   // Minimum latency.
   // Default value (0) means use max_latency_ms.
   int min_latency_ms;
 
+  // Starting latency on animated content.
+  // Default value (0) means use max_latency_ms.
+  int animated_latency_ms;

[miu, 2015/12/03 21:26:22]

Please initialize this in the constructor.

Or, if you want to do a little quick clean-up, you could eliminate the
constructor and use default initialization for all these members (recently
approved Chromium style).  Meaning, the struct would look like:

  struct CastRtpPayloadParams {
    int payload_type = 127;
    int max_latency_ms = 1000;
    int min_latency_ms = 120;
    ...
  };

[Irfan, 2015/12/04 22:45:36]

Done.

+
   // RTP specific field to identify a stream.
   int ssrc;
 
   // RTP specific field to idenfity the feedback stream.
   int feedback_ssrc;
 
   // Update frequency of payload sample.
   int clock_rate;
 
   // Maximum bitrate in kilobits per second.
@@ skipping 98 matching lines @@
   CastRtpParams params_;
   base::Closure stop_callback_;
   ErrorCallback error_callback_;
 
   base::WeakPtrFactory<CastRtpStream> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastRtpStream);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_CAST_RTP_STREAM_H_