commit 2e8d78ce42c69f6ab0f34ee7ad7e196d377ab014
author Jonas Olsson <jonasolsson@webrtc.org> Mon May 27 13:31:45 2019 +0200
committer Commit Bot <commit-bot@chromium.org> Mon May 27 13:43:45 2019 +0000
tree d850ff2c5dc561fd00534a65427396e3e4063f65
parent 6019d43a11106846836afe4b655e1f3e150bf0d0

Allow overriding subsets of probing field trials

The probe configuration is currently a single field trial. To allow
multiple experiments with non-overlapping subsets of these keys I've
added a few extra keys that override different subsets of the config.

Bug: webrtc:10394
Change-Id: I54ffd1105129794fcdae4cce314910acaa4074af
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/138274
Reviewed-by: Sebastian Jansson <srte@webrtc.org>
Commit-Queue: Jonas Olsson <jonasolsson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28076}

modules/congestion_controller/goog_cc/probe_controller.cc

diff --git a/modules/congestion_controller/goog_cc/probe_controller.cc b/modules/congestion_controller/goog_cc/probe_controller.cc
index f0ad413..1b13694 100644
--- a/modules/congestion_controller/goog_cc/probe_controller.cc
+++ b/modules/congestion_controller/goog_cc/probe_controller.cc
@@ -13,8 +13,8 @@
 #include <algorithm>
 #include <initializer_list>
 #include <string>
-#include "absl/memory/memory.h"
 
+#include "absl/memory/memory.h"
 #include "api/units/data_rate.h"
 #include "api/units/time_delta.h"
 #include "api/units/timestamp.h"
@@ -110,6 +110,19 @@
        &alr_probing_interval, &alr_probe_scale, &first_allocation_probe_scale,
        &second_allocation_probe_scale, &allocation_allow_further_probing},
       key_value_config->Lookup("WebRTC-Bwe-ProbingConfiguration"));
+
+  // Specialized keys overriding subsets of WebRTC-Bwe-ProbingConfiguration
+  ParseFieldTrial(
+      {&first_exponential_probe_scale, &second_exponential_probe_scale},
+      key_value_config->Lookup("WebRTC-Bwe-InitialProbing"));
+  ParseFieldTrial({&further_exponential_probe_scale, &further_probe_threshold},
+                  key_value_config->Lookup("WebRTC-Bwe-ExponentialProbing"));
+  ParseFieldTrial({&alr_probing_interval, &alr_probe_scale},
+                  key_value_config->Lookup("WebRTC-Bwe-AlrProbing"));
+  ParseFieldTrial(
+      {&first_allocation_probe_scale, &second_allocation_probe_scale,
+       &allocation_allow_further_probing},
+      key_value_config->Lookup("WebRTC-Bwe-AllocationProbing"));
 }
 
 ProbeControllerConfig::ProbeControllerConfig(const ProbeControllerConfig&) =