Don't re-randomize picture_id/tl0_pic_idx when re-initializing internal encoders.

webrtc/modules/video_coding/codecs/vp8/default_temporal_layers.cc

 /* Copyright (c) 2013 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/codecs/vp8/default_temporal_layers.h"
@@ skipping 176 matching lines @@
       last_base_layer_sync_(false) {
   RTC_CHECK_GE(kMaxTemporalStreams, number_of_temporal_layers);
   RTC_CHECK_GE(number_of_temporal_layers, 0);
   RTC_CHECK_LE(number_of_temporal_layers, 4);
 }
 
 int DefaultTemporalLayers::CurrentLayerId() const {
   return temporal_ids_[pattern_idx_ % temporal_ids_.size()];
 }
 
+uint8_t DefaultTemporalLayers::Tl0PicIdx() const {
+  return tl0_pic_idx_;
+}
+
 std::vector<uint32_t> DefaultTemporalLayers::OnRatesUpdated(
     int bitrate_kbps,
     int max_bitrate_kbps,
     int framerate) {
   std::vector<uint32_t> bitrates;
   for (size_t i = 0; i < num_layers_; ++i) {
     float layer_bitrate =
         bitrate_kbps * kVp8LayerRateAlloction[num_layers_ - 1][i];
     bitrates.push_back(static_cast<uint32_t>(layer_bitrate + 0.5));
   }
@@ skipping 89 matching lines @@
   if (listener_)
     listener_->OnTemporalLayersCreated(simulcast_id, tl);
   return tl;
 }
 
 void TemporalLayersFactory::SetListener(TemporalLayersListener* listener) {
   listener_ = listener;
 }
 
 }  // namespace webrtc