| // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_DTMF_SENDER_HANDLER_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_DTMF_SENDER_HANDLER_H_ |
| |
| #include <string> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/sequence_checker.h" |
| #include "third_party/blink/renderer/platform/heap/handle.h" |
| #include "third_party/blink/renderer/platform/heap/persistent.h" |
| #include "third_party/blink/renderer/platform/platform_export.h" |
| #include "third_party/blink/renderer/platform/wtf/text/wtf_string.h" |
| #include "third_party/webrtc/api/dtmf_sender_interface.h" |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } |
| |
| namespace webrtc { |
| class DtmfSenderInterface; |
| } |
| |
| namespace blink { |
| |
| // RtcDtmfSenderHandler is a delegate for the RTC DTMF Sender API messages |
| // going between WebKit and native DTMF Sender in libjingle. |
| // Instances of this class are owned by WebKit. |
| // WebKit call all of these methods on the main render thread. |
| // Callbacks to the webrtc::DtmfSenderObserverInterface implementation also |
| // occur on the main render thread. |
| class PLATFORM_EXPORT RtcDtmfSenderHandler final { |
| public: |
| class PLATFORM_EXPORT Client : public GarbageCollectedMixin { |
| public: |
| virtual ~Client() = default; |
| virtual void DidPlayTone(const String& tone) = 0; |
| |
| void Trace(Visitor* visitor) const override {} |
| }; |
| |
| RtcDtmfSenderHandler(scoped_refptr<base::SingleThreadTaskRunner> main_thread, |
| webrtc::DtmfSenderInterface* dtmf_sender); |
| ~RtcDtmfSenderHandler(); |
| |
| void SetClient(RtcDtmfSenderHandler::Client* client); |
| String CurrentToneBuffer(); |
| bool CanInsertDTMF(); |
| bool InsertDTMF(const String& tones, int duration, int inter_tone_gap); |
| |
| void OnToneChange(const String& tone); |
| |
| private: |
| scoped_refptr<webrtc::DtmfSenderInterface> dtmf_sender_; |
| WeakPersistent<RtcDtmfSenderHandler::Client> webkit_client_; |
| class Observer; |
| scoped_refptr<Observer> observer_; |
| |
| SEQUENCE_CHECKER(sequence_checker_); |
| |
| // |weak_factory_| must be the last member. |
| base::WeakPtrFactory<RtcDtmfSenderHandler> weak_factory_{this}; |
| |
| DISALLOW_COPY_AND_ASSIGN(RtcDtmfSenderHandler); |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_DTMF_SENDER_HANDLER_H_ |