Let ViEEncoder handle resolution changes.

webrtc/video/vie_encoder.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 81 matching lines @@
   virtual void OnReceivedIntraFrameRequest(size_t stream_index);
   virtual void OnReceivedSLI(uint8_t picture_id);
   virtual void OnReceivedRPSI(uint64_t picture_id);
 
   void OnBitrateUpdated(uint32_t bitrate_bps,
                         uint8_t fraction_lost,
                         int64_t round_trip_time_ms);
 
  private:
   class EncodeTask;
+  class ConfigureEncoderTask;
   class VideoSourceProxy;
-  class ConfigureEncoderTask;
+
+  struct VideoFrameInfo {
+    VideoFrameInfo(int width,
+                   int height,
+                   VideoRotation rotation,
+                   bool is_texture)
+        : width(width),
+          height(height),
+          rotation(rotation),
+          is_texture(is_texture) {}
+    int width;
+    int height;
+    webrtc::VideoRotation rotation;
+    bool is_texture;
+  };
 
   void ConfigureEncoderOnTaskQueue(VideoEncoderConfig config,
                                    size_t max_data_payload_length);
+  void ReconfigureEncoder();
 
   // Implements VideoSinkInterface.
   void OnFrame(const VideoFrame& video_frame) override;
 
   // Implements VideoSendStatisticsCallback.
   void SendStatistics(uint32_t bit_rate,
                       uint32_t frame_rate) override;
 
   void EncodeVideoFrame(const VideoFrame& frame,
                         int64_t time_when_posted_in_ms);
@@ skipping 14 matching lines @@
 
   rtc::Event shutdown_event_;
 
   const uint32_t number_of_cores_;
 
   const std::unique_ptr<VideoSourceProxy> source_proxy_;
   EncoderSink* sink_;
   const VideoSendStream::Config::EncoderSettings settings_;
   const VideoCodecType codec_type_;
 
-  const std::unique_ptr<VideoProcessing> vp_;
   vcm::VideoSender video_sender_ ACCESS_ON(&encoder_queue_);
 
   OveruseFrameDetector overuse_detector_ ACCESS_ON(&encoder_queue_);
   LoadObserver* const load_observer_ ACCESS_ON(&encoder_queue_);
 
   SendStatisticsProxy* const stats_proxy_;
   rtc::VideoSinkInterface<VideoFrame>* const pre_encode_callback_;
   ProcessThread* module_process_thread_;
   rtc::ThreadChecker module_process_thread_checker_;
   // |thread_checker_| checks that public methods that are related to lifetime
   // of ViEEncoder are called on the same thread.
   rtc::ThreadChecker thread_checker_;
 
   VideoEncoderConfig encoder_config_ ACCESS_ON(&encoder_queue_);
   // TODO(sprang): Change |rate_allocator_| to be a codec type
   // agnostic interface. It is currently VP8 simulcast specific if more than
   // one layer is specified.
   std::unique_ptr<SimulcastRateAllocator> rate_allocator_
       ACCESS_ON(&encoder_queue_);
 
-  uint32_t encoder_start_bitrate_bps_ ACCESS_ON(&encoder_queue_);
+  // Set when ConfigureEncoder has been called in order to lazy reconfigure the
+  // encoder on the next frame.
+  bool pending_encoder_reconfiguration_ ACCESS_ON(&encoder_queue_);
+  rtc::Optional<VideoFrameInfo> last_frame_info_ ACCESS_ON(&encoder_queue_);
+
+  unsigned int encoder_start_bitrate_bps_ ACCESS_ON(&encoder_queue_);
   size_t max_data_payload_length_ ACCESS_ON(&encoder_queue_);
   uint32_t last_observed_bitrate_bps_ ACCESS_ON(&encoder_queue_);
   bool encoder_paused_and_dropped_frame_ ACCESS_ON(&encoder_queue_);
   bool has_received_sli_ ACCESS_ON(&encoder_queue_);
   uint8_t picture_id_sli_ ACCESS_ON(&encoder_queue_);
   bool has_received_rpsi_ ACCESS_ON(&encoder_queue_);
   uint64_t picture_id_rpsi_ ACCESS_ON(&encoder_queue_);
   Clock* const clock_;
 
   rtc::RaceChecker incoming_frame_race_checker_;
@@ skipping 10 matching lines @@
   // All public methods are proxied to |encoder_queue_|. It must must be
   // destroyed first to make sure no tasks are run that use other members.
   rtc::TaskQueue encoder_queue_;
 
   RTC_DISALLOW_COPY_AND_ASSIGN(ViEEncoder);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIE_ENCODER_H_