Add 120ms frame ability to ANA

webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.cc

Index: webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.cc
diff --git a/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.cc b/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.cc
index 1e78db8fc6106b5dbb82b855efa90bebbfeb592a..c0044bb36f53b5cf3abb0e49504efccfc70e4af5 100644
--- a/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.cc
+++ b/webrtc/modules/audio_coding/audio_network_adaptor/frame_length_controller.cc
@@ -22,14 +22,12 @@ FrameLengthController::Config::Config(
     int initial_frame_length_ms,
     float fl_increasing_packet_loss_fraction,
     float fl_decreasing_packet_loss_fraction,
-    int fl_20ms_to_60ms_bandwidth_bps,
-    int fl_60ms_to_20ms_bandwidth_bps)
+    const std::map<FrameLengthChange, int>& frame_length_change_criteria)
     : encoder_frame_lengths_ms(encoder_frame_lengths_ms),
       initial_frame_length_ms(initial_frame_length_ms),
       fl_increasing_packet_loss_fraction(fl_increasing_packet_loss_fraction),
       fl_decreasing_packet_loss_fraction(fl_decreasing_packet_loss_fraction),
-      fl_20ms_to_60ms_bandwidth_bps(fl_20ms_to_60ms_bandwidth_bps),
-      fl_60ms_to_20ms_bandwidth_bps(fl_60ms_to_20ms_bandwidth_bps) {}
+      frame_length_change_criteria(frame_length_change_criteria) {}
 
 FrameLengthController::Config::Config(const Config& other) = default;
 
@@ -42,11 +40,6 @@ FrameLengthController::FrameLengthController(const Config& config)
                                config_.initial_frame_length_ms);
   // |encoder_frame_lengths_ms| must contain |initial_frame_length_ms|.
   RTC_DCHECK(frame_length_ms_ != config_.encoder_frame_lengths_ms.end());
-
-  frame_length_change_criteria_.insert(std::make_pair(
-      FrameLengthChange(20, 60), config_.fl_20ms_to_60ms_bandwidth_bps));
-  frame_length_change_criteria_.insert(std::make_pair(
-      FrameLengthChange(60, 20), config_.fl_60ms_to_20ms_bandwidth_bps));
 }
 
 FrameLengthController::~FrameLengthController() = default;
@@ -99,10 +92,10 @@ bool FrameLengthController::FrameLengthIncreasingDecision(
   if (longer_frame_length_ms == config_.encoder_frame_lengths_ms.end())
     return false;
 
-  auto increase_threshold = frame_length_change_criteria_.find(
+  auto increase_threshold = config_.frame_length_change_criteria.find(
       FrameLengthChange(*frame_length_ms_, *longer_frame_length_ms));
 
-  if (increase_threshold == frame_length_change_criteria_.end())
+  if (increase_threshold == config_.frame_length_change_criteria.end())
     return false;
 
   return (uplink_bandwidth_bps_ &&
@@ -124,10 +117,10 @@ bool FrameLengthController::FrameLengthDecreasingDecision(
     return false;
 
   auto shorter_frame_length_ms = std::prev(frame_length_ms_);
-  auto decrease_threshold = frame_length_change_criteria_.find(
+  auto decrease_threshold = config_.frame_length_change_criteria.find(
       FrameLengthChange(*frame_length_ms_, *shorter_frame_length_ms));
 
-  if (decrease_threshold == frame_length_change_criteria_.end())
+  if (decrease_threshold == config_.frame_length_change_criteria.end())
     return false;
 
   return (uplink_bandwidth_bps_ &&