Support texture scaling in Androids MediaEncoder

webrtc/modules/video_coding/utility/quality_scaler.cc

 /*
  *  Copyright (c) 2014 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/modules/video_coding/utility/quality_scaler.h"
@@ skipping 93 matching lines @@
   assert(downscale_shift_ >= 0);
   for (int shift = downscale_shift_;
        shift > 0 && (res_.width / 2 >= min_width_) &&
            (res_.height / 2 >= min_height_);
        --shift) {
     res_.width /= 2;
     res_.height /= 2;
   }
 }
 
-QualityScaler::Resolution QualityScaler::GetScaledResolution() const {
+const QualityScaler::Resolution& QualityScaler::GetScaledResolution() const {
   return res_;
 }
 
 int QualityScaler::GetTargetFramerate() const {
   return target_framerate_;
 }
 
 const VideoFrame& QualityScaler::GetScaledFrame(const VideoFrame& frame) {
   Resolution res = GetScaledResolution();
   if (res.width == frame.width())
@@ skipping 22 matching lines @@
 }
 
 void QualityScaler::AdjustScale(bool up) {
   downscale_shift_ += up ? -1 : 1;
   if (downscale_shift_ < 0)
     downscale_shift_ = 0;
   ClearSamples();
 }
 
 }  // namespace webrtc