Refactor scaling.

webrtc/common_video/video_frame.cc

 /*
  *  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.
  */
 
 #include "webrtc/video_frame.h"
 
 #include <string.h>
 
 #include <algorithm>  // swap
 
 #include "webrtc/base/bind.h"
 #include "webrtc/base/checks.h"
 
 namespace webrtc {
 
 // FFmpeg's decoder, used by H264DecoderImpl, requires up to 8 bytes padding due
 // to optimized bitstream readers. See avcodec_decode_video2.
 const size_t EncodedImage::kBufferPaddingBytesH264 = 8;
 
-int ExpectedSize(int plane_stride, int image_height, PlaneType type) {
-  if (type == kYPlane)
-    return plane_stride * image_height;
-  return plane_stride * ((image_height + 1) / 2);
-}
-
 VideoFrame::VideoFrame()
     : video_frame_buffer_(nullptr),
       timestamp_(0),
       ntp_time_ms_(0),
       render_time_ms_(0),
       rotation_(kVideoRotation_0) {}
 
 VideoFrame::VideoFrame(const rtc::scoped_refptr<VideoFrameBuffer>& buffer,
                        uint32_t timestamp,
                        int64_t render_time_ms,
@@ skipping 145 matching lines @@
     case kVideoCodecULPFEC:
     case kVideoCodecGeneric:
     case kVideoCodecUnknown:
       return 0;
   }
   RTC_NOTREACHED();
   return 0;
 }
 
 }  // namespace webrtc