Refactoring: Hide VideoCodec.codecSpecific as "private"

webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc

 /*
  *  Copyright (c) 2015 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 210 matching lines @@
   init_params.iPicHeight = codec_settings_.height;
   // |init_params| uses bit/s, |codec_settings_| uses kbit/s.
   init_params.iTargetBitrate = codec_settings_.targetBitrate * 1000;
   init_params.iMaxBitrate = codec_settings_.maxBitrate * 1000;
   // Rate Control mode
   init_params.iRCMode = RC_BITRATE_MODE;
   init_params.fMaxFrameRate = static_cast<float>(codec_settings_.maxFramerate);
 
   // The following parameters are extension parameters (they're in SEncParamExt,
   // not in SEncParamBase).
-  init_params.bEnableFrameSkip =
-      codec_settings_.codecSpecific.H264.frameDroppingOn;
+  init_params.bEnableFrameSkip = codec_settings_.H264()->frameDroppingOn;
   // |uiIntraPeriod|    - multiple of GOP size
   // |keyFrameInterval| - number of frames
-  init_params.uiIntraPeriod =
-      codec_settings_.codecSpecific.H264.keyFrameInterval;
+  init_params.uiIntraPeriod = codec_settings_.H264()->keyFrameInterval;
   init_params.uiMaxNalSize = 0;
   // Threading model: use auto.
   //  0: auto (dynamic imp. internal encoder)
   //  1: single thread (default value)
   // >1: number of threads
   init_params.iMultipleThreadIdc = NumberOfThreads(init_params.iPicWidth,
                                                    init_params.iPicHeight,
                                                    number_of_cores);
   // The base spatial layer 0 is the only one we use.
   init_params.sSpatialLayers[0].iVideoWidth        = init_params.iPicWidth;
@@ skipping 194 matching lines @@
 }
 
 int32_t H264EncoderImpl::SetPeriodicKeyFrames(bool enable) {
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
 void H264EncoderImpl::OnDroppedFrame() {
 }
 
 }  // namespace webrtc