Reland of Merge webrtc/video_engine/ into webrtc/video/ (patchset #2 id:300001 of https://codereview.webrtc.org/1507903005/ )

Reason for revert:
Bot breakage caused by TickTime::UseFakeClock has been removed.

Original issue's description:
> Revert of Merge webrtc/video_engine/ into webrtc/video/ (patchset #2 id:20001 of https://codereview.webrtc.org/1506773002/ )
>
> Reason for revert:
> Breaks Dr Memory Light https://build.chromium.org/p/client.webrtc/builders/Win%20DrMemory%20Light/builds/4643 and all the Android Tests bots.
>
> Original issue's description:
> > Merge webrtc/video_engine/ into webrtc/video/
> >
> > BUG=webrtc:1695
> > R=mflodman@webrtc.org
> >
> > Committed: https://crrev.com/03ef053202bc5d5ab43460eebf5403232f157646
> > Cr-Commit-Position: refs/heads/master@{#10926}
>
> TBR=mflodman@webrtc.org,pbos@webrtc.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=webrtc:1695
>
> Committed: https://crrev.com/8237abf563bf4782ee104408b53cc8e55ce44518
> Cr-Commit-Position: refs/heads/master@{#10937}

BUG=webrtc:1695
TBR=mflodman@webrtc.org,kjellander@webrtc.org
NOPRESUBMIT=true

Review URL: https://codereview.webrtc.org/1510183002 .

Cr-Commit-Position: refs/heads/master@{#10948}
diff --git a/webrtc/video/vie_encoder.cc b/webrtc/video/vie_encoder.cc
new file mode 100644
index 0000000..803825c
--- /dev/null
+++ b/webrtc/video/vie_encoder.cc
@@ -0,0 +1,628 @@
+/*
+ *  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/vie_encoder.h"
+
+#include <assert.h>
+
+#include <algorithm>
+
+#include "webrtc/base/checks.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/base/trace_event.h"
+#include "webrtc/call/bitrate_allocator.h"
+#include "webrtc/common_video/include/video_image.h"
+#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
+#include "webrtc/frame_callback.h"
+#include "webrtc/modules/bitrate_controller/include/bitrate_controller.h"
+#include "webrtc/modules/pacing/paced_sender.h"
+#include "webrtc/modules/utility/include/process_thread.h"
+#include "webrtc/modules/video_coding/include/video_codec_interface.h"
+#include "webrtc/modules/video_coding/include/video_coding.h"
+#include "webrtc/modules/video_coding/include/video_coding_defines.h"
+#include "webrtc/modules/video_coding/encoded_frame.h"
+#include "webrtc/system_wrappers/include/clock.h"
+#include "webrtc/system_wrappers/include/critical_section_wrapper.h"
+#include "webrtc/system_wrappers/include/metrics.h"
+#include "webrtc/system_wrappers/include/tick_util.h"
+#include "webrtc/video/payload_router.h"
+#include "webrtc/video/send_statistics_proxy.h"
+
+namespace webrtc {
+
+// Margin on when we pause the encoder when the pacing buffer overflows relative
+// to the configured buffer delay.
+static const float kEncoderPausePacerMargin = 2.0f;
+
+// Don't stop the encoder unless the delay is above this configured value.
+static const int kMinPacingDelayMs = 200;
+
+static const float kStopPaddingThresholdMs = 2000;
+
+static const int kMinKeyFrameRequestIntervalMs = 300;
+
+std::vector<uint32_t> AllocateStreamBitrates(
+    uint32_t total_bitrate,
+    const SimulcastStream* stream_configs,
+    size_t number_of_streams) {
+  if (number_of_streams == 0) {
+    std::vector<uint32_t> stream_bitrates(1, 0);
+    stream_bitrates[0] = total_bitrate;
+    return stream_bitrates;
+  }
+  std::vector<uint32_t> stream_bitrates(number_of_streams, 0);
+  uint32_t bitrate_remainder = total_bitrate;
+  for (size_t i = 0; i < stream_bitrates.size() && bitrate_remainder > 0; ++i) {
+    if (stream_configs[i].maxBitrate * 1000 > bitrate_remainder) {
+      stream_bitrates[i] = bitrate_remainder;
+    } else {
+      stream_bitrates[i] = stream_configs[i].maxBitrate * 1000;
+    }
+    bitrate_remainder -= stream_bitrates[i];
+  }
+  return stream_bitrates;
+}
+
+class QMVideoSettingsCallback : public VCMQMSettingsCallback {
+ public:
+  explicit QMVideoSettingsCallback(VideoProcessing* vpm);
+
+  ~QMVideoSettingsCallback();
+
+  // Update VPM with QM (quality modes: frame size & frame rate) settings.
+  int32_t SetVideoQMSettings(const uint32_t frame_rate,
+                             const uint32_t width,
+                             const uint32_t height);
+
+  // Update target frame rate.
+  void SetTargetFramerate(int frame_rate);
+
+ private:
+  VideoProcessing* vp_;
+};
+
+class ViEBitrateObserver : public BitrateObserver {
+ public:
+  explicit ViEBitrateObserver(ViEEncoder* owner)
+      : owner_(owner) {
+  }
+  virtual ~ViEBitrateObserver() {}
+  // Implements BitrateObserver.
+  virtual void OnNetworkChanged(uint32_t bitrate_bps,
+                                uint8_t fraction_lost,
+                                int64_t rtt) {
+    owner_->OnNetworkChanged(bitrate_bps, fraction_lost, rtt);
+  }
+ private:
+  ViEEncoder* owner_;
+};
+
+ViEEncoder::ViEEncoder(uint32_t number_of_cores,
+                       ProcessThread* module_process_thread,
+                       SendStatisticsProxy* stats_proxy,
+                       I420FrameCallback* pre_encode_callback,
+                       PacedSender* pacer,
+                       BitrateAllocator* bitrate_allocator)
+    : number_of_cores_(number_of_cores),
+      vp_(VideoProcessing::Create()),
+      qm_callback_(new QMVideoSettingsCallback(vp_.get())),
+      vcm_(VideoCodingModule::Create(Clock::GetRealTimeClock(),
+                                     this,
+                                     qm_callback_.get())),
+      send_payload_router_(NULL),
+      data_cs_(CriticalSectionWrapper::CreateCriticalSection()),
+      stats_proxy_(stats_proxy),
+      pre_encode_callback_(pre_encode_callback),
+      pacer_(pacer),
+      bitrate_allocator_(bitrate_allocator),
+      time_of_last_frame_activity_ms_(0),
+      encoder_config_(),
+      min_transmit_bitrate_kbps_(0),
+      last_observed_bitrate_bps_(0),
+      target_delay_ms_(0),
+      network_is_transmitting_(true),
+      encoder_paused_(false),
+      encoder_paused_and_dropped_frame_(false),
+      module_process_thread_(module_process_thread),
+      has_received_sli_(false),
+      picture_id_sli_(0),
+      has_received_rpsi_(false),
+      picture_id_rpsi_(0),
+      video_suspended_(false) {
+  bitrate_observer_.reset(new ViEBitrateObserver(this));
+}
+
+bool ViEEncoder::Init() {
+  vp_->EnableTemporalDecimation(true);
+
+  // Enable/disable content analysis: off by default for now.
+  vp_->EnableContentAnalysis(false);
+
+  if (vcm_->RegisterTransportCallback(this) != 0) {
+    return false;
+  }
+  if (vcm_->RegisterSendStatisticsCallback(this) != 0) {
+    return false;
+  }
+  return true;
+}
+
+void ViEEncoder::StartThreadsAndSetSharedMembers(
+    rtc::scoped_refptr<PayloadRouter> send_payload_router,
+    VCMProtectionCallback* vcm_protection_callback) {
+  RTC_DCHECK(send_payload_router_ == NULL);
+
+  send_payload_router_ = send_payload_router;
+  vcm_->RegisterProtectionCallback(vcm_protection_callback);
+  module_process_thread_->RegisterModule(vcm_.get());
+}
+
+void ViEEncoder::StopThreadsAndRemoveSharedMembers() {
+  if (bitrate_allocator_)
+    bitrate_allocator_->RemoveBitrateObserver(bitrate_observer_.get());
+  module_process_thread_->DeRegisterModule(vcm_.get());
+}
+
+ViEEncoder::~ViEEncoder() {
+}
+
+void ViEEncoder::SetNetworkTransmissionState(bool is_transmitting) {
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    network_is_transmitting_ = is_transmitting;
+  }
+}
+
+void ViEEncoder::Pause() {
+  CriticalSectionScoped cs(data_cs_.get());
+  encoder_paused_ = true;
+}
+
+void ViEEncoder::Restart() {
+  CriticalSectionScoped cs(data_cs_.get());
+  encoder_paused_ = false;
+}
+
+int32_t ViEEncoder::RegisterExternalEncoder(webrtc::VideoEncoder* encoder,
+                                            uint8_t pl_type,
+                                            bool internal_source) {
+  if (vcm_->RegisterExternalEncoder(encoder, pl_type, internal_source) !=
+      VCM_OK) {
+    return -1;
+  }
+  return 0;
+}
+
+int32_t ViEEncoder::DeRegisterExternalEncoder(uint8_t pl_type) {
+  if (vcm_->RegisterExternalEncoder(NULL, pl_type) != VCM_OK) {
+    return -1;
+  }
+  return 0;
+}
+
+int32_t ViEEncoder::SetEncoder(const webrtc::VideoCodec& video_codec) {
+  RTC_DCHECK(send_payload_router_ != NULL);
+  // Setting target width and height for VPM.
+  if (vp_->SetTargetResolution(video_codec.width, video_codec.height,
+                               video_codec.maxFramerate) != VPM_OK) {
+    return -1;
+  }
+
+  // Cache codec before calling AddBitrateObserver (which calls OnNetworkChanged
+  // that makes use of the number of simulcast streams configured).
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    encoder_config_ = video_codec;
+  }
+
+  // Add a bitrate observer to the allocator and update the start, max and
+  // min bitrates of the bitrate controller as needed.
+  int allocated_bitrate_bps = bitrate_allocator_->AddBitrateObserver(
+      bitrate_observer_.get(), video_codec.minBitrate * 1000,
+      video_codec.maxBitrate * 1000);
+
+  webrtc::VideoCodec modified_video_codec = video_codec;
+  modified_video_codec.startBitrate = allocated_bitrate_bps / 1000;
+
+  size_t max_data_payload_length = send_payload_router_->MaxPayloadLength();
+  if (vcm_->RegisterSendCodec(&modified_video_codec, number_of_cores_,
+                              static_cast<uint32_t>(max_data_payload_length)) !=
+      VCM_OK) {
+    return -1;
+  }
+  return 0;
+}
+
+int ViEEncoder::GetPaddingNeededBps() const {
+  int64_t time_of_last_frame_activity_ms;
+  int min_transmit_bitrate_bps;
+  int bitrate_bps;
+  VideoCodec send_codec;
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    bool send_padding = encoder_config_.numberOfSimulcastStreams > 1 ||
+                        video_suspended_ || min_transmit_bitrate_kbps_ > 0;
+    if (!send_padding)
+      return 0;
+    time_of_last_frame_activity_ms = time_of_last_frame_activity_ms_;
+    min_transmit_bitrate_bps = 1000 * min_transmit_bitrate_kbps_;
+    bitrate_bps = last_observed_bitrate_bps_;
+    send_codec = encoder_config_;
+  }
+
+  bool video_is_suspended = vcm_->VideoSuspended();
+
+  // Find the max amount of padding we can allow ourselves to send at this
+  // point, based on which streams are currently active and what our current
+  // available bandwidth is.
+  int pad_up_to_bitrate_bps = 0;
+  if (send_codec.numberOfSimulcastStreams == 0) {
+    pad_up_to_bitrate_bps = send_codec.minBitrate * 1000;
+  } else {
+    SimulcastStream* stream_configs = send_codec.simulcastStream;
+    pad_up_to_bitrate_bps =
+        stream_configs[send_codec.numberOfSimulcastStreams - 1].minBitrate *
+        1000;
+    for (int i = 0; i < send_codec.numberOfSimulcastStreams - 1; ++i) {
+      pad_up_to_bitrate_bps += stream_configs[i].targetBitrate * 1000;
+    }
+  }
+
+  // Disable padding if only sending one stream and video isn't suspended and
+  // min-transmit bitrate isn't used (applied later).
+  if (!video_is_suspended && send_codec.numberOfSimulcastStreams <= 1)
+    pad_up_to_bitrate_bps = 0;
+
+  // The amount of padding should decay to zero if no frames are being
+  // captured/encoded unless a min-transmit bitrate is used.
+  int64_t now_ms = TickTime::MillisecondTimestamp();
+  if (now_ms - time_of_last_frame_activity_ms > kStopPaddingThresholdMs)
+    pad_up_to_bitrate_bps = 0;
+
+  // Pad up to min bitrate.
+  if (pad_up_to_bitrate_bps < min_transmit_bitrate_bps)
+    pad_up_to_bitrate_bps = min_transmit_bitrate_bps;
+
+  // Padding may never exceed bitrate estimate.
+  if (pad_up_to_bitrate_bps > bitrate_bps)
+    pad_up_to_bitrate_bps = bitrate_bps;
+
+  return pad_up_to_bitrate_bps;
+}
+
+bool ViEEncoder::EncoderPaused() const {
+  // Pause video if paused by caller or as long as the network is down or the
+  // pacer queue has grown too large in buffered mode.
+  if (encoder_paused_) {
+    return true;
+  }
+  if (target_delay_ms_ > 0) {
+    // Buffered mode.
+    // TODO(pwestin): Workaround until nack is configured as a time and not
+    // number of packets.
+    return pacer_->QueueInMs() >=
+           std::max(
+               static_cast<int>(target_delay_ms_ * kEncoderPausePacerMargin),
+               kMinPacingDelayMs);
+  }
+  if (pacer_->ExpectedQueueTimeMs() > PacedSender::kMaxQueueLengthMs) {
+    // Too much data in pacer queue, drop frame.
+    return true;
+  }
+  return !network_is_transmitting_;
+}
+
+void ViEEncoder::TraceFrameDropStart() {
+  // Start trace event only on the first frame after encoder is paused.
+  if (!encoder_paused_and_dropped_frame_) {
+    TRACE_EVENT_ASYNC_BEGIN0("webrtc", "EncoderPaused", this);
+  }
+  encoder_paused_and_dropped_frame_ = true;
+  return;
+}
+
+void ViEEncoder::TraceFrameDropEnd() {
+  // End trace event on first frame after encoder resumes, if frame was dropped.
+  if (encoder_paused_and_dropped_frame_) {
+    TRACE_EVENT_ASYNC_END0("webrtc", "EncoderPaused", this);
+  }
+  encoder_paused_and_dropped_frame_ = false;
+}
+
+void ViEEncoder::DeliverFrame(VideoFrame video_frame) {
+  RTC_DCHECK(send_payload_router_ != NULL);
+  if (!send_payload_router_->active()) {
+    // We've paused or we have no channels attached, don't waste resources on
+    // encoding.
+    return;
+  }
+  VideoCodecType codec_type;
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    time_of_last_frame_activity_ms_ = TickTime::MillisecondTimestamp();
+    if (EncoderPaused()) {
+      TraceFrameDropStart();
+      return;
+    }
+    TraceFrameDropEnd();
+    codec_type = encoder_config_.codecType;
+  }
+
+  TRACE_EVENT_ASYNC_STEP0("webrtc", "Video", video_frame.render_time_ms(),
+                          "Encode");
+  const VideoFrame* frame_to_send = &video_frame;
+  // TODO(wuchengli): support texture frames.
+  if (video_frame.native_handle() == NULL) {
+    // 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;
+  }
+
+  if (codec_type == webrtc::kVideoCodecVP8) {
+    webrtc::CodecSpecificInfo codec_specific_info;
+    codec_specific_info.codecType = webrtc::kVideoCodecVP8;
+    {
+      CriticalSectionScoped cs(data_cs_.get());
+      codec_specific_info.codecSpecific.VP8.hasReceivedRPSI =
+          has_received_rpsi_;
+      codec_specific_info.codecSpecific.VP8.hasReceivedSLI =
+          has_received_sli_;
+      codec_specific_info.codecSpecific.VP8.pictureIdRPSI =
+          picture_id_rpsi_;
+      codec_specific_info.codecSpecific.VP8.pictureIdSLI  =
+          picture_id_sli_;
+      has_received_sli_ = false;
+      has_received_rpsi_ = false;
+    }
+
+    vcm_->AddVideoFrame(*frame_to_send, vp_->GetContentMetrics(),
+                        &codec_specific_info);
+    return;
+  }
+  vcm_->AddVideoFrame(*frame_to_send);
+}
+
+int ViEEncoder::SendKeyFrame() {
+  return vcm_->IntraFrameRequest(0);
+}
+
+uint32_t ViEEncoder::LastObservedBitrateBps() const {
+  CriticalSectionScoped cs(data_cs_.get());
+  return last_observed_bitrate_bps_;
+}
+
+int ViEEncoder::CodecTargetBitrate(uint32_t* bitrate) const {
+  if (vcm_->Bitrate(bitrate) != 0)
+    return -1;
+  return 0;
+}
+
+void ViEEncoder::SetProtectionMethod(bool nack, bool fec) {
+  // Set Video Protection for VCM.
+  VCMVideoProtection protection_mode;
+  if (fec) {
+    protection_mode =
+        nack ? webrtc::kProtectionNackFEC : kProtectionFEC;
+  } else {
+    protection_mode = nack ? kProtectionNack : kProtectionNone;
+  }
+  vcm_->SetVideoProtection(protection_mode, true);
+}
+
+void ViEEncoder::SetSenderBufferingMode(int target_delay_ms) {
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    target_delay_ms_ = target_delay_ms;
+  }
+  if (target_delay_ms > 0) {
+    // Disable external frame-droppers.
+    vcm_->EnableFrameDropper(false);
+    vp_->EnableTemporalDecimation(false);
+  } else {
+    // Real-time mode - enable frame droppers.
+    vp_->EnableTemporalDecimation(true);
+    vcm_->EnableFrameDropper(true);
+  }
+}
+
+void ViEEncoder::OnSetRates(uint32_t bitrate_bps, int framerate) {
+  if (stats_proxy_)
+    stats_proxy_->OnSetRates(bitrate_bps, framerate);
+}
+
+int32_t ViEEncoder::SendData(
+    const uint8_t payload_type,
+    const EncodedImage& encoded_image,
+    const webrtc::RTPFragmentationHeader& fragmentation_header,
+    const RTPVideoHeader* rtp_video_hdr) {
+  RTC_DCHECK(send_payload_router_ != NULL);
+
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    time_of_last_frame_activity_ms_ = TickTime::MillisecondTimestamp();
+  }
+
+  if (stats_proxy_ != NULL)
+    stats_proxy_->OnSendEncodedImage(encoded_image, rtp_video_hdr);
+
+  return send_payload_router_->RoutePayload(
+             encoded_image._frameType, payload_type, encoded_image._timeStamp,
+             encoded_image.capture_time_ms_, encoded_image._buffer,
+             encoded_image._length, &fragmentation_header, rtp_video_hdr)
+             ? 0
+             : -1;
+}
+
+int32_t ViEEncoder::SendStatistics(const uint32_t bit_rate,
+                                   const uint32_t frame_rate) {
+  if (stats_proxy_)
+    stats_proxy_->OnOutgoingRate(frame_rate, bit_rate);
+  return 0;
+}
+
+void ViEEncoder::OnReceivedSLI(uint32_t /*ssrc*/,
+                               uint8_t picture_id) {
+  CriticalSectionScoped cs(data_cs_.get());
+  picture_id_sli_ = picture_id;
+  has_received_sli_ = true;
+}
+
+void ViEEncoder::OnReceivedRPSI(uint32_t /*ssrc*/,
+                                uint64_t picture_id) {
+  CriticalSectionScoped cs(data_cs_.get());
+  picture_id_rpsi_ = picture_id;
+  has_received_rpsi_ = true;
+}
+
+void ViEEncoder::OnReceivedIntraFrameRequest(uint32_t ssrc) {
+  // Key frame request from remote side, signal to VCM.
+  TRACE_EVENT0("webrtc", "OnKeyFrameRequest");
+
+  int idx = 0;
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    auto stream_it = ssrc_streams_.find(ssrc);
+    if (stream_it == ssrc_streams_.end()) {
+      LOG_F(LS_WARNING) << "ssrc not found: " << ssrc << ", map size "
+                        << ssrc_streams_.size();
+      return;
+    }
+    std::map<unsigned int, int64_t>::iterator time_it =
+        time_last_intra_request_ms_.find(ssrc);
+    if (time_it == time_last_intra_request_ms_.end()) {
+      time_last_intra_request_ms_[ssrc] = 0;
+    }
+
+    int64_t now = TickTime::MillisecondTimestamp();
+    if (time_last_intra_request_ms_[ssrc] + kMinKeyFrameRequestIntervalMs
+        > now) {
+      return;
+    }
+    time_last_intra_request_ms_[ssrc] = now;
+    idx = stream_it->second;
+  }
+  // Release the critsect before triggering key frame.
+  vcm_->IntraFrameRequest(idx);
+}
+
+void ViEEncoder::OnLocalSsrcChanged(uint32_t old_ssrc, uint32_t new_ssrc) {
+  CriticalSectionScoped cs(data_cs_.get());
+  std::map<unsigned int, int>::iterator it = ssrc_streams_.find(old_ssrc);
+  if (it == ssrc_streams_.end()) {
+    return;
+  }
+
+  ssrc_streams_[new_ssrc] = it->second;
+  ssrc_streams_.erase(it);
+
+  std::map<unsigned int, int64_t>::iterator time_it =
+      time_last_intra_request_ms_.find(old_ssrc);
+  int64_t last_intra_request_ms = 0;
+  if (time_it != time_last_intra_request_ms_.end()) {
+    last_intra_request_ms = time_it->second;
+    time_last_intra_request_ms_.erase(time_it);
+  }
+  time_last_intra_request_ms_[new_ssrc] = last_intra_request_ms;
+}
+
+void ViEEncoder::SetSsrcs(const std::vector<uint32_t>& ssrcs) {
+  CriticalSectionScoped cs(data_cs_.get());
+  ssrc_streams_.clear();
+  time_last_intra_request_ms_.clear();
+  int idx = 0;
+  for (uint32_t ssrc : ssrcs) {
+    ssrc_streams_[ssrc] = idx++;
+  }
+}
+
+void ViEEncoder::SetMinTransmitBitrate(int min_transmit_bitrate_kbps) {
+  assert(min_transmit_bitrate_kbps >= 0);
+  CriticalSectionScoped crit(data_cs_.get());
+  min_transmit_bitrate_kbps_ = min_transmit_bitrate_kbps;
+}
+
+// Called from ViEBitrateObserver.
+void ViEEncoder::OnNetworkChanged(uint32_t bitrate_bps,
+                                  uint8_t fraction_lost,
+                                  int64_t round_trip_time_ms) {
+  LOG(LS_VERBOSE) << "OnNetworkChanged, bitrate" << bitrate_bps
+                  << " packet loss " << static_cast<int>(fraction_lost)
+                  << " rtt " << round_trip_time_ms;
+  RTC_DCHECK(send_payload_router_ != NULL);
+  vcm_->SetChannelParameters(bitrate_bps, fraction_lost, round_trip_time_ms);
+  bool video_is_suspended = vcm_->VideoSuspended();
+  bool video_suspension_changed;
+  VideoCodec send_codec;
+  uint32_t first_ssrc;
+  {
+    CriticalSectionScoped cs(data_cs_.get());
+    last_observed_bitrate_bps_ = bitrate_bps;
+    video_suspension_changed = video_suspended_ != video_is_suspended;
+    video_suspended_ = video_is_suspended;
+    send_codec = encoder_config_;
+    first_ssrc = ssrc_streams_.begin()->first;
+  }
+
+  SimulcastStream* stream_configs = send_codec.simulcastStream;
+  // Allocate the bandwidth between the streams.
+  std::vector<uint32_t> stream_bitrates = AllocateStreamBitrates(
+      bitrate_bps, stream_configs, send_codec.numberOfSimulcastStreams);
+  send_payload_router_->SetTargetSendBitrates(stream_bitrates);
+
+  if (!video_suspension_changed)
+    return;
+  // Video suspend-state changed, inform codec observer.
+  LOG(LS_INFO) << "Video suspend state changed " << video_is_suspended
+               << " for ssrc " << first_ssrc;
+  if (stats_proxy_)
+    stats_proxy_->OnSuspendChange(video_is_suspended);
+}
+
+void ViEEncoder::SuspendBelowMinBitrate() {
+  vcm_->SuspendBelowMinBitrate();
+  bitrate_allocator_->EnforceMinBitrate(false);
+}
+
+void ViEEncoder::RegisterPostEncodeImageCallback(
+      EncodedImageCallback* post_encode_callback) {
+  vcm_->RegisterPostEncodeImageCallback(post_encode_callback);
+}
+
+QMVideoSettingsCallback::QMVideoSettingsCallback(VideoProcessing* vpm)
+    : vp_(vpm) {
+}
+
+QMVideoSettingsCallback::~QMVideoSettingsCallback() {
+}
+
+int32_t QMVideoSettingsCallback::SetVideoQMSettings(
+    const uint32_t frame_rate,
+    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