chromium/third_party/webrtc/pc/dtmf_sender.h

/*
 *  Copyright 2012 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.
 */

#ifndef PC_DTMF_SENDER_H_
#define PC_DTMF_SENDER_H_

#include <stdint.h>

#include <string>

#include "api/dtmf_sender_interface.h"
#include "api/scoped_refptr.h"
#include "api/sequence_checker.h"
#include "api/task_queue/pending_task_safety_flag.h"
#include "api/task_queue/task_queue_base.h"
#include "pc/proxy.h"
#include "rtc_base/ref_count.h"
#include "rtc_base/thread_annotations.h"

// DtmfSender is the native implementation of the RTCDTMFSender defined by
// the WebRTC W3C Editor's Draft.
// https://w3c.github.io/webrtc-pc/#rtcdtmfsender

namespace webrtc {

// This interface is called by DtmfSender to talk to the actual audio channel
// to send DTMF.
class DtmfProviderInterface { … };

class DtmfSender : public DtmfSenderInterface { … };

// Define proxy for DtmfSenderInterface.
BEGIN_PRIMARY_PROXY_MAP(DtmfSender)

PROXY_PRIMARY_THREAD_DESTRUCTOR()
PROXY_METHOD1(void, RegisterObserver, DtmfSenderObserverInterface*)
PROXY_METHOD0(void, UnregisterObserver)
PROXY_METHOD0(bool, CanInsertDtmf)
PROXY_METHOD4(bool, InsertDtmf, const std::string&, int, int, int)
PROXY_CONSTMETHOD0(std::string, tones)
PROXY_CONSTMETHOD0(int, duration)
PROXY_CONSTMETHOD0(int, inter_tone_gap)
PROXY_CONSTMETHOD0(int, comma_delay)
END_PROXY_MAP(DtmfSender)

// Get DTMF code from the DTMF event character.
bool GetDtmfCode(char tone, int* code);

}  // namespace webrtc

#endif  // PC_DTMF_SENDER_H_