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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/peerconnection/peer_connection_util.h"
#include "base/time/time.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/timing/dom_window_performance.h"
#include "third_party/blink/renderer/core/timing/performance.h"
#include "third_party/blink/renderer/core/timing/worker_global_scope_performance.h"
#include "third_party/blink/renderer/core/workers/worker_global_scope.h"
namespace blink {
namespace {
Performance* GetPerformanceFromExecutionContext(ExecutionContext* context) {
if (auto* window = DynamicTo<LocalDOMWindow>(context)) {
return DOMWindowPerformance::performance(*window);
} else if (auto* worker = DynamicTo<WorkerGlobalScope>(context)) {
return WorkerGlobalScopePerformance::performance(*worker);
}
NOTREACHED();
}
} // namespace
DOMHighResTimeStamp CalculateRTCEncodedFrameTimestamp(
ExecutionContext* context,
base::TimeTicks timestamp) {
Performance* performance = GetPerformanceFromExecutionContext(context);
return Performance::MonotonicTimeToDOMHighResTimeStamp(
performance->GetTimeOriginInternal(), timestamp,
/*allow_negative_value=*/true,
performance->CrossOriginIsolatedCapability());
}
DOMHighResTimeStamp CalculateRTCEncodedFrameTimeDelta(
ExecutionContext* context,
base::TimeDelta time_delta) {
return Performance::ClampTimeResolution(
time_delta, GetPerformanceFromExecutionContext(context)
->CrossOriginIsolatedCapability());
}
} // namespace blink
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