tdesktop/Telegram/SourceFiles/calls/calls_call.h

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/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
#pragma once
#include "base/weak_unique_ptr.h"
#include "base/timer.h"
#include "mtproto/sender.h"
#include "mtproto/auth_key.h"
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namespace Media {
namespace Audio {
class Track;
} // namespace Audio
} // namespace Media
namespace tgvoip {
class VoIPController;
} // namespace tgvoip
namespace Calls {
struct DhConfig {
int32 version = 0;
int32 g = 0;
std::vector<gsl::byte> p;
};
class Call : public base::enable_weak_from_this, private MTP::Sender {
public:
class Delegate {
public:
virtual DhConfig getDhConfig() const = 0;
virtual void callFinished(not_null<Call*> call) = 0;
virtual void callFailed(not_null<Call*> call) = 0;
virtual void callRedial(not_null<Call*> call) = 0;
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enum class Sound {
Connecting,
Busy,
Ended,
};
virtual void playSound(Sound sound) = 0;
};
static constexpr auto kRandomPowerSize = 256;
static constexpr auto kSha256Size = 32;
static constexpr auto kSoundSampleMs = 100;
enum class Type {
Incoming,
Outgoing,
};
Call(not_null<Delegate*> delegate, not_null<UserData*> user, Type type);
Type type() const {
return _type;
}
not_null<UserData*> user() const {
return _user;
}
bool isIncomingWaiting() const;
void start(base::const_byte_span random);
bool handleUpdate(const MTPPhoneCall &call);
enum State {
Starting,
WaitingInit,
WaitingInitAck,
Established,
FailedHangingUp,
Failed,
HangingUp,
Ended,
EndedByOtherDevice,
ExchangingKeys,
Waiting,
Requesting,
WaitingIncoming,
Ringing,
Busy,
};
State state() const {
return _state;
}
base::Observable<State> &stateChanged() {
return _stateChanged;
}
void setMute(bool mute);
bool isMute() const {
return _mute;
}
base::Observable<bool> &muteChanged() {
return _muteChanged;
}
TimeMs getDurationMs() const;
float64 getWaitingSoundPeakValue() const;
void answer();
void hangup();
void redial();
bool isKeyShaForFingerprintReady() const;
std::array<gsl::byte, kSha256Size> getKeyShaForFingerprint() const;
QString getDebugLog() const;
~Call();
private:
enum class FinishType {
None,
Ended,
Failed,
};
void handleRequestError(const RPCError &error);
void handleControllerError(int error);
void finish(FinishType type, const MTPPhoneCallDiscardReason &reason = MTP_phoneCallDiscardReasonDisconnect());
void startOutgoing();
void startIncoming();
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void startWaitingTrack();
void generateModExpFirst(base::const_byte_span randomSeed);
void handleControllerStateChange(tgvoip::VoIPController *controller, int state);
void createAndStartController(const MTPDphoneCall &call);
template <typename T>
bool checkCallCommonFields(const T &call);
bool checkCallFields(const MTPDphoneCall &call);
bool checkCallFields(const MTPDphoneCallAccepted &call);
void confirmAcceptedCall(const MTPDphoneCallAccepted &call);
void startConfirmedCall(const MTPDphoneCall &call);
void setState(State state);
void setStateQueued(State state);
void setFailedQueued(int error);
void destroyController();
not_null<Delegate*> _delegate;
not_null<UserData*> _user;
Type _type = Type::Outgoing;
State _state = State::Starting;
FinishType _finishAfterRequestingCall = FinishType::None;
bool _answerAfterDhConfigReceived = false;
base::Observable<State> _stateChanged;
TimeMs _startTime = 0;
base::DelayedCallTimer _finishByTimeoutTimer;
base::Timer _discardByTimeoutTimer;
bool _mute = false;
base::Observable<bool> _muteChanged;
DhConfig _dhConfig;
std::vector<gsl::byte> _ga;
std::vector<gsl::byte> _gb;
std::array<gsl::byte, kSha256Size> _gaHash;
std::array<gsl::byte, kRandomPowerSize> _randomPower;
MTP::AuthKey::Data _authKey;
MTPPhoneCallProtocol _protocol;
uint64 _id = 0;
uint64 _accessHash = 0;
uint64 _keyFingerprint = 0;
std::unique_ptr<tgvoip::VoIPController> _controller;
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std::unique_ptr<Media::Audio::Track> _waitingTrack;
};
void UpdateConfig(const std::map<std::string, std::string> &data);
} // namespace Calls