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* 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 <stdint.h>
#include "absl/types/optional.h"
namespace cricket {
// Delayable is used by user code through ApplyConstraints algorithm. Its
// methods must take precendence over similar functional in `syncable.h`.
class Delayable {
virtual ~Delayable() {}
// Set base minimum delay of the receive stream with specified ssrc.
// Base minimum delay sets lower bound on minimum delay value which
// determines minimum delay until audio playout.
// Returns false if there is no stream with given ssrc.
virtual bool SetBaseMinimumPlayoutDelayMs(uint32_t ssrc, int delay_ms) = 0;
// Returns current value of base minimum delay in milliseconds.
virtual absl::optional<int> GetBaseMinimumPlayoutDelayMs(
uint32_t ssrc) const = 0;
} // namespace cricket