Change pre_encode_callback to get a const frame.

webrtc/video/vie_encoder.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.
  */
 
@@ skipping 64 matching lines @@
   void SetTargetFramerate(int frame_rate);
 
  private:
   VideoProcessing* vp_;
 };
 
 ViEEncoder::ViEEncoder(uint32_t number_of_cores,
                        const std::vector<uint32_t>& ssrcs,
                        ProcessThread* module_process_thread,
                        SendStatisticsProxy* stats_proxy,
-                       I420FrameCallback* pre_encode_callback,
+                       rtc::VideoSinkInterface<VideoFrame>* pre_encode_callback,
                        OveruseFrameDetector* overuse_detector,
                        PacedSender* pacer,
                        PayloadRouter* payload_router)
     : number_of_cores_(number_of_cores),
       ssrcs_(ssrcs),
       vp_(VideoProcessing::Create()),
       qm_callback_(new QMVideoSettingsCallback(vp_.get())),
       vcm_(VideoCodingModule::Create(Clock::GetRealTimeClock(),
                                      this,
                                      qm_callback_.get())),
@@ skipping 240 matching lines @@
   // TODO(wuchengli): support texture frames.
   if (!video_frame.native_handle()) {
     // Pass frame via preprocessor.
     frame_to_send = vp_->PreprocessFrame(video_frame);
     if (!frame_to_send) {
       // Drop this frame, or there was an error processing it.
       return;
     }
   }
 
-  // If we haven't resampled the frame and we have a FrameCallback, we need to
-  // make a deep copy of |video_frame|.
-  VideoFrame copied_frame;
   if (pre_encode_callback_) {
-    copied_frame.CopyFrame(*frame_to_send);
-    pre_encode_callback_->FrameCallback(&copied_frame);
-    frame_to_send = &copied_frame;
+    pre_encode_callback_->OnFrame(*frame_to_send);
   }
 
   if (codec_type == webrtc::kVideoCodecVP8) {
     webrtc::CodecSpecificInfo codec_specific_info;
     codec_specific_info.codecType = webrtc::kVideoCodecVP8;
     {
       rtc::CritScope lock(&data_cs_);
       codec_specific_info.codecSpecific.VP8.hasReceivedRPSI =
           has_received_rpsi_;
       codec_specific_info.codecSpecific.VP8.hasReceivedSLI =
@@ skipping 167 matching lines @@
     const uint32_t width,
     const uint32_t height) {
   return vp_->SetTargetResolution(width, height, frame_rate);
 }
 
 void QMVideoSettingsCallback::SetTargetFramerate(int frame_rate) {
   vp_->SetTargetFramerate(frame_rate);
 }
 
 }  // namespace webrtc