Implement timing frames.

webrtc/modules/video_coding/include/video_coding_defines.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 21 matching lines @@
 #define VCM_PARAMETER_ERROR -4
 #define VCM_UNKNOWN_PAYLOAD -5
 #define VCM_CODEC_ERROR -6
 #define VCM_UNINITIALIZED -7
 #define VCM_NO_CODEC_REGISTERED -8
 #define VCM_JITTER_BUFFER_ERROR -9
 #define VCM_OLD_PACKET_ERROR -10
 #define VCM_NO_FRAME_DECODED -11
 #define VCM_NOT_IMPLEMENTED -20
 
-enum { kDefaultStartBitrateKbps = 300 };
+enum {
+  kDefaultStartBitrateKbps = 300,
+  // Timing frames settings.
+  kMinFrameSizeToForceTimingFrameBytes = 15000,
+  kTimingFramesDelayMs = 200,

[sprang_webrtc, 2017/05/31 11:12:55]

These should have "default" somewhere in the name.
Also, do we have to use enum? If so, probably define the type. Otherwise make
them plain static const/constexpr

[ilnik, 2017/05/31 15:17:45]

Done.

+};
 
 enum VCMVideoProtection {
   kProtectionNone,
   kProtectionNack,
   kProtectionFEC,
   kProtectionNackFEC,
 };
 
 enum VCMTemporalDecimation {
   kBitrateOverUseDecimation,
@@ skipping 104 matching lines @@
  public:
   virtual void RequestKeyFrame() = 0;
 
  protected:
   virtual ~KeyFrameRequestSender() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_INCLUDE_VIDEO_CODING_DEFINES_H_