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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "media/base/state_machine.h" |
| 6 |
| 7 namespace media { |
| 8 |
| 9 StateMachine::StateMachine() : owner_(nullptr) {} |
| 10 |
| 11 StateMachine::~StateMachine() { |
| 12 for (scoped_refptr<State> state : states_) |
| 13 state->UnregisterClient(this); |
| 14 } |
| 15 |
| 16 void StateMachine::SetOwner(Owner* owner) { |
| 17 owner_ = owner; |
| 18 } |
| 19 |
| 20 void StateMachine::OnStateChanged() { |
| 21 DCHECK(owner_); |
| 22 owner_->RequestRun(this); |
| 23 } |
| 24 |
| 25 void StateMachine::UsingState(scoped_refptr<State> state) { |
| 26 // TODO(liberato): check for duplicates. Not sure why set doesn't work, |
| 27 // since it seems like there should be a default hash defined for refptr. |
| 28 // maybe define one if not, but probably i just forgot to tell the set |
| 29 // about it. |
| 30 state->RegisterClient(this); |
| 31 states_.push_back(state); |
| 32 } |
| 33 |
| 34 } // namespace media |
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