Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/third_party/libwebrtc/rtc_base/experiments/quality_rampup_experiment.cc b/third_party/libwebrtc/rtc_base/experiments/quality_rampup_experiment.cc
new file mode 100644
index 0000000000..509ba91dc3
--- /dev/null
+++ b/third_party/libwebrtc/rtc_base/experiments/quality_rampup_experiment.cc
@@ -0,0 +1,82 @@
+/*
+ *  Copyright (c) 2019 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 "rtc_base/experiments/quality_rampup_experiment.h"
+
+#include <algorithm>
+
+#include "api/transport/field_trial_based_config.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+
+QualityRampupExperiment::QualityRampupExperiment(
+    const FieldTrialsView* const key_value_config)
+    : min_pixels_("min_pixels"),
+      min_duration_ms_("min_duration_ms"),
+      max_bitrate_factor_("max_bitrate_factor") {
+  ParseFieldTrial(
+      {&min_pixels_, &min_duration_ms_, &max_bitrate_factor_},
+      key_value_config->Lookup("WebRTC-Video-QualityRampupSettings"));
+}
+
+QualityRampupExperiment QualityRampupExperiment::ParseSettings() {
+  FieldTrialBasedConfig field_trial_config;
+  return QualityRampupExperiment(&field_trial_config);
+}
+
+absl::optional<int> QualityRampupExperiment::MinPixels() const {
+  return min_pixels_.GetOptional();
+}
+
+absl::optional<int> QualityRampupExperiment::MinDurationMs() const {
+  return min_duration_ms_.GetOptional();
+}
+
+absl::optional<double> QualityRampupExperiment::MaxBitrateFactor() const {
+  return max_bitrate_factor_.GetOptional();
+}
+
+void QualityRampupExperiment::SetMaxBitrate(int pixels,
+                                            uint32_t max_bitrate_kbps) {
+  if (!min_pixels_ || pixels < min_pixels_.Value() || max_bitrate_kbps == 0) {
+    return;
+  }
+  max_bitrate_kbps_ = std::max(max_bitrate_kbps_.value_or(0), max_bitrate_kbps);
+}
+
+bool QualityRampupExperiment::BwHigh(int64_t now_ms,
+                                     uint32_t available_bw_kbps) {
+  if (!min_pixels_ || !min_duration_ms_ || !max_bitrate_kbps_) {
+    return false;
+  }
+
+  if (available_bw_kbps <
+      max_bitrate_kbps_.value() * MaxBitrateFactor().value_or(1)) {
+    start_ms_.reset();
+    return false;
+  }
+
+  if (!start_ms_)
+    start_ms_ = now_ms;
+
+  return (now_ms - *start_ms_) >= min_duration_ms_.Value();
+}
+
+void QualityRampupExperiment::Reset() {
+  start_ms_.reset();
+  max_bitrate_kbps_.reset();
+}
+
+bool QualityRampupExperiment::Enabled() const {
+  return min_pixels_ && min_duration_ms_;
+}
+
+}  // namespace webrtc