nheko/src/voip/CallManager.cpp
2023-03-30 17:36:40 +02:00

1160 lines
38 KiB
C++

// SPDX-FileCopyrightText: Nheko Contributors
//
// SPDX-License-Identifier: GPL-3.0-or-later
#include <algorithm>
#include <cctype>
#include <chrono>
#include <cstdint>
#include <cstdlib>
#include <memory>
#include <QGuiApplication>
#include <QMediaPlaylist>
#include <QUrl>
#include "Cache.h"
#include "CallDevices.h"
#include "CallManager.h"
#include "ChatPage.h"
#include "Logging.h"
#include "MatrixClient.h"
#include "UserSettingsPage.h"
#include "Utils.h"
#include "mtx/responses/turn_server.hpp"
#include "voip/ScreenCastPortal.h"
#include "voip/WebRTCSession.h"
/*
* Select Answer when one instance of the client supports v0
*/
#ifdef XCB_AVAILABLE
#include <xcb/xcb.h>
#include <xcb/xcb_ewmh.h>
#endif
#ifdef GSTREAMER_AVAILABLE
extern "C"
{
#include "gst/gst.h"
}
#endif
Q_DECLARE_METATYPE(std::vector<mtx::events::voip::CallCandidates::Candidate>)
Q_DECLARE_METATYPE(mtx::events::voip::CallCandidates::Candidate)
Q_DECLARE_METATYPE(mtx::responses::TurnServer)
using namespace mtx::events;
using namespace mtx::events::voip;
using webrtc::CallType;
using webrtc::ScreenShareType;
//! Session Description Object
typedef RTCSessionDescriptionInit SDO;
namespace {
std::vector<std::string>
getTurnURIs(const mtx::responses::TurnServer &turnServer);
}
CallManager::CallManager(QObject *parent)
: QObject(parent)
, session_(WebRTCSession::instance())
, turnServerTimer_(this)
{
qRegisterMetaType<std::vector<mtx::events::voip::CallCandidates::Candidate>>();
qRegisterMetaType<mtx::events::voip::CallCandidates::Candidate>();
qRegisterMetaType<mtx::responses::TurnServer>();
#ifdef GSTREAMER_AVAILABLE
std::string errorMessage;
if (session_.havePlugins(true, true, ScreenShareType::XDP, &errorMessage)) {
screenShareTypes_.push_back(ScreenShareType::XDP);
screenShareType_ = ScreenShareType::XDP;
}
if (std::getenv("DISPLAY")) {
screenShareTypes_.push_back(ScreenShareType::X11);
if (QGuiApplication::platformName() != QStringLiteral("wayland")) {
// Selected by default
screenShareType_ = ScreenShareType::X11;
std::swap(screenShareTypes_[0], screenShareTypes_[1]);
}
}
#endif
connect(
&session_,
&WebRTCSession::offerCreated,
this,
[this](const std::string &sdp, const std::vector<CallCandidates::Candidate> &candidates) {
nhlog::ui()->debug("WebRTC: call id: {} - sending offer", callid_);
emit newMessage(roomid_,
CallInvite{callid_,
partyid_,
SDO{sdp, SDO::Type::Offer},
callPartyVersion_,
timeoutms_,
invitee_});
emit newMessage(roomid_,
CallCandidates{callid_, partyid_, candidates, callPartyVersion_});
std::string callid(callid_);
QTimer::singleShot(timeoutms_, this, [this, callid]() {
if (session_.state() == webrtc::State::OFFERSENT && callid == callid_) {
hangUp(CallHangUp::Reason::InviteTimeOut);
emit ChatPage::instance()->showNotification(
QStringLiteral("The remote side failed to pick up."));
}
});
});
connect(
&session_,
&WebRTCSession::answerCreated,
this,
[this](const std::string &sdp, const std::vector<CallCandidates::Candidate> &candidates) {
nhlog::ui()->debug("WebRTC: call id: {} - sending answer", callid_);
emit newMessage(
roomid_, CallAnswer{callid_, partyid_, callPartyVersion_, SDO{sdp, SDO::Type::Answer}});
emit newMessage(roomid_,
CallCandidates{callid_, partyid_, candidates, callPartyVersion_});
});
connect(&session_,
&WebRTCSession::newICECandidate,
this,
[this](const CallCandidates::Candidate &candidate) {
nhlog::ui()->debug("WebRTC: call id: {} - sending ice candidate", callid_);
emit newMessage(roomid_,
CallCandidates{callid_, partyid_, {candidate}, callPartyVersion_});
});
connect(&turnServerTimer_, &QTimer::timeout, this, &CallManager::retrieveTurnServer);
connect(
this, &CallManager::turnServerRetrieved, this, [this](const mtx::responses::TurnServer &res) {
nhlog::net()->info("TURN server(s) retrieved from homeserver:");
nhlog::net()->info("username: {}", res.username);
nhlog::net()->info("ttl: {} seconds", res.ttl);
for (const auto &u : res.uris)
nhlog::net()->info("uri: {}", u);
// Request new credentials close to expiry
// See https://tools.ietf.org/html/draft-uberti-behave-turn-rest-00
turnURIs_ = getTurnURIs(res);
uint32_t ttl = std::max(res.ttl, std::uint32_t{3600});
if (res.ttl < 3600)
nhlog::net()->warn("Setting ttl to 1 hour");
turnServerTimer_.setInterval(std::chrono::seconds(ttl) * 10 / 9);
});
connect(&session_, &WebRTCSession::stateChanged, this, [this](webrtc::State state) {
switch (state) {
case webrtc::State::DISCONNECTED:
playRingtone(QUrl(QStringLiteral("qrc:/media/media/callend.ogg")), false);
clear();
break;
case webrtc::State::ICEFAILED: {
QString error(QStringLiteral("Call connection failed."));
if (turnURIs_.empty())
error += QLatin1String(" Your homeserver has no configured TURN server.");
emit ChatPage::instance()->showNotification(error);
hangUp(CallHangUp::Reason::ICEFailed);
break;
}
default:
break;
}
emit newCallState();
});
connect(
&CallDevices::instance(), &CallDevices::devicesChanged, this, &CallManager::devicesChanged);
connect(
&player_, &QMediaPlayer::mediaStatusChanged, this, [this](QMediaPlayer::MediaStatus status) {
if (status == QMediaPlayer::LoadedMedia)
player_.play();
});
connect(&player_,
QOverload<QMediaPlayer::Error>::of(&QMediaPlayer::error),
this,
[this](QMediaPlayer::Error error) {
stopRingtone();
switch (error) {
case QMediaPlayer::FormatError:
case QMediaPlayer::ResourceError:
nhlog::ui()->error("WebRTC: valid ringtone file not found");
break;
case QMediaPlayer::AccessDeniedError:
nhlog::ui()->error("WebRTC: access to ringtone file denied");
break;
default:
nhlog::ui()->error("WebRTC: unable to play ringtone");
break;
}
});
#ifdef GSTREAMER_AVAILABLE
connect(&ScreenCastPortal::instance(),
&ScreenCastPortal::readyChanged,
this,
&CallManager::screenShareChanged);
#endif
}
void
CallManager::sendInvite(const QString &roomid, CallType callType, unsigned int windowIndex)
{
if (isOnCall() || isOnCallOnOtherDevice()) {
if (isOnCallOnOtherDevice_ != "")
emit ChatPage::instance()->showNotification(
QStringLiteral("User is already in a call"));
return;
}
auto roomInfo = cache::singleRoomInfo(roomid.toStdString());
std::string errorMessage;
callType_ = callType;
roomid_ = roomid;
generateCallID();
std::vector<RoomMember> members(cache::getMembers(roomid.toStdString()));
const RoomMember *callee;
if (roomInfo.member_count == 1)
callee = &members.front();
else if (roomInfo.member_count == 2)
callee = members.front().user_id == utils::localUser() ? &members.back() : &members.front();
else {
emit ChatPage::instance()->showNotification(
QStringLiteral("Calls are limited to rooms with less than two members"));
return;
}
#ifdef GSTREAMER_AVAILABLE
if (callType == CallType::SCREEN) {
if (screenShareType_ == ScreenShareType::X11) {
if (windows_.empty() || windowIndex >= windows_.size()) {
nhlog::ui()->error("WebRTC: window index out of range");
return;
}
} else {
ScreenCastPortal &sc_portal = ScreenCastPortal::instance();
if (sc_portal.getStream() == nullptr) {
nhlog::ui()->error("xdg-desktop-portal stream not started");
return;
}
}
}
#endif
if (haveCallInvite_) {
nhlog::ui()->debug(
"WebRTC: Discarding outbound call for inbound call. localUser is polite party");
if (callParty_ == callee->user_id) {
if (callType == callType_)
acceptInvite();
else {
emit ChatPage::instance()->showNotification(
QStringLiteral("Can't place call. Call types do not match"));
emit newMessage(
roomid_,
CallHangUp{callid_, partyid_, callPartyVersion_, CallHangUp::Reason::UserBusy});
}
} else {
emit ChatPage::instance()->showNotification(
QStringLiteral("Already on a call with a different user"));
emit newMessage(
roomid_,
CallHangUp{callid_, partyid_, callPartyVersion_, CallHangUp::Reason::UserBusy});
}
return;
}
session_.setTurnServers(turnURIs_);
std::string strCallType =
callType_ == CallType::VOICE ? "voice" : (callType_ == CallType::VIDEO ? "video" : "screen");
nhlog::ui()->debug("WebRTC: call id: {} - creating {} invite", callid_, strCallType);
callParty_ = callee->user_id;
callPartyDisplayName_ = callee->display_name.isEmpty() ? callee->user_id : callee->display_name;
callPartyAvatarUrl_ = QString::fromStdString(roomInfo.avatar_url);
invitee_ = callParty_.toStdString();
emit newInviteState();
playRingtone(QUrl(QStringLiteral("qrc:/media/media/ringback.ogg")), true);
uint32_t shareWindowId =
callType == CallType::SCREEN && screenShareType_ == ScreenShareType::X11
? windows_[windowIndex].second
: 0;
if (!session_.createOffer(callType, screenShareType_, shareWindowId)) {
emit ChatPage::instance()->showNotification(QStringLiteral("Problem setting up call."));
endCall();
}
}
namespace {
std::string
callHangUpReasonString(CallHangUp::Reason reason)
{
switch (reason) {
case CallHangUp::Reason::ICEFailed:
return "ICE failed";
case CallHangUp::Reason::InviteTimeOut:
return "Invite time out";
case CallHangUp::Reason::ICETimeOut:
return "ICE time out";
case CallHangUp::Reason::UserHangUp:
return "User hung up";
case CallHangUp::Reason::UserMediaFailed:
return "User media failed";
case CallHangUp::Reason::UserBusy:
return "User busy";
case CallHangUp::Reason::UnknownError:
return "Unknown error";
default:
return "User";
}
}
}
void
CallManager::hangUp(CallHangUp::Reason reason)
{
if (!callid_.empty()) {
nhlog::ui()->debug(
"WebRTC: call id: {} - hanging up ({})", callid_, callHangUpReasonString(reason));
emit newMessage(roomid_, CallHangUp{callid_, partyid_, callPartyVersion_, reason});
endCall();
}
}
void
CallManager::syncEvent(const mtx::events::collections::TimelineEvents &event)
{
#ifdef GSTREAMER_AVAILABLE
if (handleEvent<CallInvite>(event) || handleEvent<CallCandidates>(event) ||
handleEvent<CallNegotiate>(event) || handleEvent<CallSelectAnswer>(event) ||
handleEvent<CallAnswer>(event) || handleEvent<CallReject>(event) ||
handleEvent<CallHangUp>(event))
return;
#else
(void)event;
#endif
}
template<typename T>
bool
CallManager::handleEvent(const mtx::events::collections::TimelineEvents &event)
{
if (std::holds_alternative<RoomEvent<T>>(event)) {
handleEvent(std::get<RoomEvent<T>>(event));
return true;
}
return false;
}
void
CallManager::handleEvent(const RoomEvent<CallInvite> &callInviteEvent)
{
const char video[] = "m=video";
const std::string &sdp = callInviteEvent.content.offer.sdp;
bool isVideo = std::search(sdp.cbegin(),
sdp.cend(),
std::cbegin(video),
std::cend(video) - 1,
[](unsigned char c1, unsigned char c2) {
return std::tolower(c1) == std::tolower(c2);
}) != sdp.cend();
nhlog::ui()->debug("WebRTC: call id: {} - incoming {} CallInvite from ({},{}) ",
callInviteEvent.content.call_id,
(isVideo ? "video" : "voice"),
callInviteEvent.sender,
callInviteEvent.content.party_id);
if (callInviteEvent.content.call_id.empty())
return;
if (callInviteEvent.sender == utils::localUser().toStdString()) {
if (callInviteEvent.content.party_id == partyid_)
return;
else {
if (callInviteEvent.content.invitee != utils::localUser().toStdString()) {
isOnCallOnOtherDevice_ = callInviteEvent.content.call_id;
emit newCallDeviceState();
nhlog::ui()->debug("WebRTC: User is on call on other device.");
return;
}
}
}
auto roomInfo = cache::singleRoomInfo(callInviteEvent.room_id);
callPartyVersion_ = callInviteEvent.content.version;
const QString &ringtone = UserSettings::instance()->ringtone();
bool sharesRoom = true;
std::vector<RoomMember> members(cache::getMembers(callInviteEvent.room_id));
const RoomMember &caller =
*std::find_if(members.begin(), members.end(), [&](RoomMember member) {
return member.user_id.toStdString() == callInviteEvent.sender;
});
if (isOnCall() || isOnCallOnOtherDevice()) {
if (isOnCallOnOtherDevice_ != "")
return;
if (callParty_.toStdString() == callInviteEvent.sender) {
if (session_.state() == webrtc::State::OFFERSENT) {
if (callid_ > callInviteEvent.content.call_id) {
endCall();
callParty_ = caller.user_id;
callPartyDisplayName_ =
caller.display_name.isEmpty() ? caller.user_id : caller.display_name;
callPartyAvatarUrl_ = QString::fromStdString(roomInfo.avatar_url);
roomid_ = QString::fromStdString(callInviteEvent.room_id);
callid_ = callInviteEvent.content.call_id;
remoteICECandidates_.clear();
haveCallInvite_ = true;
callType_ = isVideo ? CallType::VIDEO : CallType::VOICE;
inviteSDP_ = callInviteEvent.content.offer.sdp;
emit newInviteState();
acceptInvite();
}
return;
} else if (session_.state() < webrtc::State::OFFERSENT)
endCall();
else
return;
} else
return;
}
if (callPartyVersion_ == "0") {
if (roomInfo.member_count != 2) {
emit newMessage(QString::fromStdString(callInviteEvent.room_id),
CallHangUp{callInviteEvent.content.call_id,
partyid_,
callPartyVersion_,
CallHangUp::Reason::InviteTimeOut});
return;
}
} else {
if (caller.user_id == utils::localUser() &&
callInviteEvent.content.party_id == partyid_) // remote echo
return;
if (roomInfo.member_count == 2 || // general call in room with two members
(roomInfo.member_count == 1 &&
partyid_ !=
callInviteEvent.content.party_id) || // self call, ring if not the same party_id
callInviteEvent.content.invitee == "" || // empty, meant for everyone
callInviteEvent.content.invitee ==
utils::localUser().toStdString()) // meant specifically for local user
{
if (roomInfo.member_count > 2) {
// check if shares room
sharesRoom = checkSharesRoom(QString::fromStdString(callInviteEvent.room_id),
callInviteEvent.content.invitee);
}
} else {
emit newMessage(QString::fromStdString(callInviteEvent.room_id),
CallHangUp{callInviteEvent.content.call_id,
partyid_,
callPartyVersion_,
CallHangUp::Reason::InviteTimeOut});
return;
}
}
// ring if not mute or does not have direct message room
if (ringtone != QLatin1String("Mute") && sharesRoom)
playRingtone(ringtone == QLatin1String("Default")
? QUrl(QStringLiteral("qrc:/media/media/ring.ogg"))
: QUrl::fromLocalFile(ringtone),
true);
callParty_ = caller.user_id;
callPartyDisplayName_ = caller.display_name.isEmpty() ? caller.user_id : caller.display_name;
callPartyAvatarUrl_ = QString::fromStdString(roomInfo.avatar_url);
roomid_ = QString::fromStdString(callInviteEvent.room_id);
callid_ = callInviteEvent.content.call_id;
remoteICECandidates_.clear();
haveCallInvite_ = true;
callType_ = isVideo ? CallType::VIDEO : CallType::VOICE;
inviteSDP_ = callInviteEvent.content.offer.sdp;
emit newInviteState();
}
void
CallManager::acceptInvite()
{
// if call was accepted/rejected elsewhere and m.call.select_answer is received
// before acceptInvite
if (!haveCallInvite_)
return;
stopRingtone();
std::string errorMessage;
if (!session_.havePlugins(callType_ != CallType::VOICE,
callType_ == CallType::SCREEN,
screenShareType_,
&errorMessage)) {
emit ChatPage::instance()->showNotification(QString::fromStdString(errorMessage));
hangUp(CallHangUp::Reason::UserMediaFailed);
return;
}
session_.setTurnServers(turnURIs_);
if (!session_.acceptOffer(inviteSDP_)) {
emit ChatPage::instance()->showNotification(QStringLiteral("Problem setting up call."));
hangUp();
return;
}
session_.acceptICECandidates(remoteICECandidates_);
remoteICECandidates_.clear();
haveCallInvite_ = false;
emit newInviteState();
}
void
CallManager::rejectInvite()
{
if (callPartyVersion_ == "0") {
hangUp();
// send m.call.reject after sending hangup as mentioned in MSC2746
emit newMessage(roomid_, CallReject{callid_, partyid_, callPartyVersion_});
}
if (!callid_.empty()) {
nhlog::ui()->debug("WebRTC: call id: {} - rejecting call", callid_);
emit newMessage(roomid_, CallReject{callid_, partyid_, callPartyVersion_});
endCall(false);
}
}
void
CallManager::handleEvent(const RoomEvent<CallCandidates> &callCandidatesEvent)
{
if (callCandidatesEvent.sender == utils::localUser().toStdString() &&
callCandidatesEvent.content.party_id == partyid_)
return;
nhlog::ui()->debug("WebRTC: call id: {} - incoming CallCandidates from ({}, {})",
callCandidatesEvent.content.call_id,
callCandidatesEvent.sender,
callCandidatesEvent.content.party_id);
if (callid_ == callCandidatesEvent.content.call_id) {
if (isOnCall())
session_.acceptICECandidates(callCandidatesEvent.content.candidates);
else {
// CallInvite has been received and we're awaiting localUser to accept or
// reject the call
for (const auto &c : callCandidatesEvent.content.candidates)
remoteICECandidates_.push_back(c);
}
}
}
void
CallManager::handleEvent(const RoomEvent<CallAnswer> &callAnswerEvent)
{
nhlog::ui()->debug("WebRTC: call id: {} - incoming CallAnswer from ({}, {})",
callAnswerEvent.content.call_id,
callAnswerEvent.sender,
callAnswerEvent.content.party_id);
if (answerSelected_)
return;
if (callAnswerEvent.sender == utils::localUser().toStdString() &&
callid_ == callAnswerEvent.content.call_id) {
if (partyid_ == callAnswerEvent.content.party_id)
return;
if (!isOnCall()) {
emit ChatPage::instance()->showNotification(
QStringLiteral("Call answered on another device."));
stopRingtone();
haveCallInvite_ = false;
if (callPartyVersion_ != "1") {
isOnCallOnOtherDevice_ = callid_;
emit newCallDeviceState();
}
emit newInviteState();
}
if (callParty_ != utils::localUser())
return;
}
if (isOnCall() && callid_ == callAnswerEvent.content.call_id) {
stopRingtone();
if (!session_.acceptAnswer(callAnswerEvent.content.answer.sdp)) {
emit ChatPage::instance()->showNotification(QStringLiteral("Problem setting up call."));
hangUp();
}
}
emit newMessage(
roomid_,
CallSelectAnswer{callid_, partyid_, callPartyVersion_, callAnswerEvent.content.party_id});
selectedpartyid_ = callAnswerEvent.content.party_id;
answerSelected_ = true;
}
void
CallManager::handleEvent(const RoomEvent<CallHangUp> &callHangUpEvent)
{
nhlog::ui()->debug("WebRTC: call id: {} - incoming CallHangUp ({}) from ({}, {})",
callHangUpEvent.content.call_id,
callHangUpReasonString(callHangUpEvent.content.reason),
callHangUpEvent.sender,
callHangUpEvent.content.party_id);
if (callid_ == callHangUpEvent.content.call_id ||
isOnCallOnOtherDevice_ == callHangUpEvent.content.call_id)
endCall();
}
void
CallManager::handleEvent(const RoomEvent<CallSelectAnswer> &callSelectAnswerEvent)
{
nhlog::ui()->debug("WebRTC: call id: {} - incoming CallSelectAnswer from ({}, {})",
callSelectAnswerEvent.content.call_id,
callSelectAnswerEvent.sender,
callSelectAnswerEvent.content.party_id);
if (callSelectAnswerEvent.sender == utils::localUser().toStdString()) {
if (callSelectAnswerEvent.content.party_id != partyid_) {
if (std::find(rejectCallPartyIDs_.begin(),
rejectCallPartyIDs_.begin(),
callSelectAnswerEvent.content.selected_party_id) !=
rejectCallPartyIDs_.end())
endCall();
else {
if (callSelectAnswerEvent.content.selected_party_id == partyid_)
return;
nhlog::ui()->debug("WebRTC: call id: {} - user is on call with this user!",
callSelectAnswerEvent.content.call_id);
isOnCallOnOtherDevice_ = callSelectAnswerEvent.content.call_id;
emit newCallDeviceState();
}
}
return;
} else if (callid_ == callSelectAnswerEvent.content.call_id) {
if (callSelectAnswerEvent.content.selected_party_id != partyid_) {
bool endAllCalls = false;
if (std::find(rejectCallPartyIDs_.begin(),
rejectCallPartyIDs_.begin(),
callSelectAnswerEvent.content.selected_party_id) !=
rejectCallPartyIDs_.end())
endAllCalls = true;
else {
isOnCallOnOtherDevice_ = callid_;
emit newCallDeviceState();
}
endCall(endAllCalls);
} else if (session_.state() == webrtc::State::DISCONNECTED)
endCall();
}
}
void
CallManager::handleEvent(const RoomEvent<CallReject> &callRejectEvent)
{
nhlog::ui()->debug("WebRTC: call id: {} - incoming CallReject from ({}, {})",
callRejectEvent.content.call_id,
callRejectEvent.sender,
callRejectEvent.content.party_id);
if (answerSelected_)
return;
rejectCallPartyIDs_.push_back(callRejectEvent.content.party_id);
// check remote echo
if (callRejectEvent.sender == utils::localUser().toStdString()) {
if (callRejectEvent.content.party_id != partyid_ && callParty_ != utils::localUser())
emit ChatPage::instance()->showNotification(
QStringLiteral("Call rejected on another device."));
endCall();
return;
}
if (callRejectEvent.content.call_id == callid_) {
if (session_.state() == webrtc::State::OFFERSENT) {
// only accept reject if webrtc is in OFFERSENT state, else call has been accepted
emit newMessage(
roomid_,
CallSelectAnswer{
callid_, partyid_, callPartyVersion_, callRejectEvent.content.party_id});
endCall();
}
}
}
void
CallManager::handleEvent(const RoomEvent<CallNegotiate> &callNegotiateEvent)
{
nhlog::ui()->debug("WebRTC: call id: {} - incoming CallNegotiate from ({}, {})",
callNegotiateEvent.content.call_id,
callNegotiateEvent.sender,
callNegotiateEvent.content.party_id);
std::string negotiationSDP_ = callNegotiateEvent.content.description.sdp;
if (!session_.acceptNegotiation(negotiationSDP_)) {
emit ChatPage::instance()->showNotification(QStringLiteral("Problem accepting new SDP"));
hangUp();
return;
}
session_.acceptICECandidates(remoteICECandidates_);
remoteICECandidates_.clear();
}
bool
CallManager::checkSharesRoom(QString roomid, std::string invitee) const
{
/*
IMPLEMENTATION REQUIRED
Check if room is shared to determine whether to ring or not.
Called from handle callInvite event
*/
if (roomid.toStdString() != "") {
if (invitee == "") {
// check all members
return true;
} else {
return true;
// check if invitee shares a direct room with local user
}
return true;
}
return true;
}
void
CallManager::toggleMicMute()
{
session_.toggleMicMute();
emit micMuteChanged();
}
bool
CallManager::callsSupported()
{
#ifdef GSTREAMER_AVAILABLE
return true;
#else
return false;
#endif
}
QStringList
CallManager::devices(bool isVideo) const
{
QStringList ret;
const QString &defaultDevice =
isVideo ? UserSettings::instance()->camera() : UserSettings::instance()->microphone();
std::vector<std::string> devices =
CallDevices::instance().names(isVideo, defaultDevice.toStdString());
assert(devices.size() < std::numeric_limits<int>::max());
ret.reserve(static_cast<int>(devices.size()));
std::transform(devices.cbegin(), devices.cend(), std::back_inserter(ret), [](const auto &d) {
return QString::fromStdString(d);
});
return ret;
}
void
CallManager::generateCallID()
{
using namespace std::chrono;
uint64_t ms = duration_cast<milliseconds>(system_clock::now().time_since_epoch()).count();
callid_ = "c" + std::to_string(ms);
}
void
CallManager::clear(bool endAllCalls)
{
closeScreenShare();
roomid_.clear();
callParty_.clear();
callPartyDisplayName_.clear();
callPartyAvatarUrl_.clear();
callid_.clear();
callType_ = CallType::VOICE;
haveCallInvite_ = false;
answerSelected_ = false;
if (endAllCalls) {
isOnCallOnOtherDevice_ = "";
rejectCallPartyIDs_.clear();
emit newCallDeviceState();
}
emit newInviteState();
inviteSDP_.clear();
remoteICECandidates_.clear();
}
void
CallManager::endCall(bool endAllCalls)
{
stopRingtone();
session_.end();
clear(endAllCalls);
}
void
CallManager::refreshTurnServer()
{
turnURIs_.clear();
turnServerTimer_.start(2000);
}
void
CallManager::retrieveTurnServer()
{
http::client()->get_turn_server(
[this](const mtx::responses::TurnServer &res, mtx::http::RequestErr err) {
if (err) {
turnServerTimer_.setInterval(5000);
return;
}
emit turnServerRetrieved(res);
});
}
void
CallManager::playRingtone(const QUrl &ringtone, bool repeat)
{
static QMediaPlaylist playlist;
playlist.clear();
playlist.setPlaybackMode(repeat ? QMediaPlaylist::CurrentItemInLoop
: QMediaPlaylist::CurrentItemOnce);
playlist.addMedia(ringtone);
player_.setVolume(100);
player_.setPlaylist(&playlist);
}
void
CallManager::stopRingtone()
{
player_.setPlaylist(nullptr);
}
bool
CallManager::screenShareReady() const
{
#ifdef GSTREAMER_AVAILABLE
if (screenShareType_ == ScreenShareType::X11) {
return true;
} else {
return ScreenCastPortal::instance().ready();
}
#else
return false;
#endif
}
QStringList
CallManager::screenShareTypeList()
{
QStringList ret;
ret.reserve(2);
for (ScreenShareType type : screenShareTypes_) {
switch (type) {
case ScreenShareType::X11:
ret.append(tr("X11"));
break;
case ScreenShareType::XDP:
ret.append(tr("PipeWire"));
break;
}
}
return ret;
}
QStringList
CallManager::windowList()
{
if (!(std::find(screenShareTypes_.begin(), screenShareTypes_.end(), ScreenShareType::X11) !=
screenShareTypes_.end())) {
return {};
}
windows_.clear();
windows_.push_back({tr("Entire screen"), 0});
#ifdef XCB_AVAILABLE
std::unique_ptr<xcb_connection_t, std::function<void(xcb_connection_t *)>> connection(
xcb_connect(nullptr, nullptr), [](xcb_connection_t *c) { xcb_disconnect(c); });
if (xcb_connection_has_error(connection.get())) {
nhlog::ui()->error("Failed to connect to X server");
return {};
}
xcb_ewmh_connection_t ewmh;
if (!xcb_ewmh_init_atoms_replies(
&ewmh, xcb_ewmh_init_atoms(connection.get(), &ewmh), nullptr)) {
nhlog::ui()->error("Failed to connect to EWMH server");
return {};
}
std::unique_ptr<xcb_ewmh_connection_t, std::function<void(xcb_ewmh_connection_t *)>>
ewmhconnection(&ewmh, [](xcb_ewmh_connection_t *c) { xcb_ewmh_connection_wipe(c); });
for (int i = 0; i < ewmh.nb_screens; i++) {
xcb_ewmh_get_windows_reply_t clients;
if (!xcb_ewmh_get_client_list_reply(
&ewmh, xcb_ewmh_get_client_list(&ewmh, i), &clients, nullptr)) {
nhlog::ui()->error("Failed to request window list");
return {};
}
for (uint32_t w = 0; w < clients.windows_len; w++) {
xcb_window_t window = clients.windows[w];
std::string name;
xcb_ewmh_get_utf8_strings_reply_t data;
auto getName = [](xcb_ewmh_get_utf8_strings_reply_t *r) {
std::string name(r->strings, r->strings_len);
xcb_ewmh_get_utf8_strings_reply_wipe(r);
return name;
};
xcb_get_property_cookie_t cookie = xcb_ewmh_get_wm_name(&ewmh, window);
if (xcb_ewmh_get_wm_name_reply(&ewmh, cookie, &data, nullptr))
name = getName(&data);
cookie = xcb_ewmh_get_wm_visible_name(&ewmh, window);
if (xcb_ewmh_get_wm_visible_name_reply(&ewmh, cookie, &data, nullptr))
name = getName(&data);
windows_.push_back({QString::fromStdString(name), window});
}
xcb_ewmh_get_windows_reply_wipe(&clients);
}
#endif
QStringList ret;
assert(windows_.size() < std::numeric_limits<int>::max());
ret.reserve(static_cast<int>(windows_.size()));
for (const auto &w : windows_)
ret.append(w.first);
return ret;
}
#ifdef GSTREAMER_AVAILABLE
namespace {
GstElement *pipe_ = nullptr;
unsigned int busWatchId_ = 0;
void
close_preview_stream()
{
if (pipe_) {
gst_element_set_state(GST_ELEMENT(pipe_), GST_STATE_NULL);
gst_object_unref(pipe_);
pipe_ = nullptr;
}
if (busWatchId_) {
g_source_remove(busWatchId_);
busWatchId_ = 0;
}
}
gboolean
newBusMessage(GstBus *bus G_GNUC_UNUSED, GstMessage *msg, gpointer G_GNUC_UNUSED)
{
switch (GST_MESSAGE_TYPE(msg)) {
case GST_MESSAGE_EOS:
close_preview_stream();
break;
case GST_MESSAGE_ERROR: {
GError *err = nullptr;
gchar *dbg_info = nullptr;
gst_message_parse_error(msg, &err, &dbg_info);
nhlog::ui()->error("GST error: {}", dbg_info);
g_error_free(err);
g_free(dbg_info);
close_preview_stream();
break;
}
default:
break;
}
return TRUE;
}
static GstElement *
make_preview_sink()
{
if (QGuiApplication::platformName() == QStringLiteral("wayland")) {
return gst_element_factory_make("waylandsink", nullptr);
} else {
return gst_element_factory_make("ximagesink", nullptr);
}
}
}
#endif
void
CallManager::previewWindow(unsigned int index) const
{
#ifdef GSTREAMER_AVAILABLE
if (!gst_is_initialized())
return;
if (pipe_ != nullptr) {
nhlog::ui()->warn("Preview already started");
return;
}
if (screenShareType_ == ScreenShareType::X11 &&
(windows_.empty() || index >= windows_.size())) {
nhlog::ui()->error("X11 screencast not available");
return;
}
auto settings = ChatPage::instance()->userSettings();
pipe_ = gst_pipeline_new(nullptr);
GstElement *videoconvert = gst_element_factory_make("videoconvert", nullptr);
GstElement *videoscale = gst_element_factory_make("videoscale", nullptr);
GstElement *capsfilter = gst_element_factory_make("capsfilter", nullptr);
GstElement *preview_sink = make_preview_sink();
GstElement *videorate = gst_element_factory_make("videorate", nullptr);
gst_bin_add_many(
GST_BIN(pipe_), videorate, videoconvert, videoscale, capsfilter, preview_sink, nullptr);
GstCaps *caps = gst_caps_new_simple(
"video/x-raw", "framerate", GST_TYPE_FRACTION, settings->screenShareFrameRate(), 1, nullptr);
g_object_set(capsfilter, "caps", caps, nullptr);
gst_caps_unref(caps);
GstElement *screencastsrc = nullptr;
if (screenShareType_ == ScreenShareType::X11) {
GstElement *ximagesrc = gst_element_factory_make("ximagesrc", nullptr);
if (!ximagesrc) {
nhlog::ui()->error("Failed to create ximagesrc");
gst_object_unref(pipe_);
pipe_ = nullptr;
return;
}
g_object_set(ximagesrc, "use-damage", FALSE, nullptr);
g_object_set(ximagesrc, "xid", windows_[index].second, nullptr);
g_object_set(ximagesrc, "show-pointer", !settings->screenShareHideCursor(), nullptr);
g_object_set(ximagesrc, "do-timestamp", (gboolean)1, nullptr);
gst_bin_add(GST_BIN(pipe_), ximagesrc);
screencastsrc = ximagesrc;
} else {
ScreenCastPortal &sc_portal = ScreenCastPortal::instance();
const ScreenCastPortal::Stream *stream = sc_portal.getStream();
if (stream == nullptr) {
nhlog::ui()->error("xdg-desktop-portal stream not started");
gst_object_unref(pipe_);
pipe_ = nullptr;
return;
}
GstElement *pipewiresrc = gst_element_factory_make("pipewiresrc", nullptr);
g_object_set(pipewiresrc, "fd", (gint)stream->fd.fileDescriptor(), nullptr);
std::string path = std::to_string(stream->nodeId);
g_object_set(pipewiresrc, "path", path.c_str(), nullptr);
g_object_set(pipewiresrc, "do-timestamp", (gboolean)1, nullptr);
gst_bin_add(GST_BIN(pipe_), pipewiresrc);
screencastsrc = pipewiresrc;
}
if (!gst_element_link_many(
screencastsrc, videorate, videoconvert, videoscale, capsfilter, preview_sink, nullptr)) {
nhlog::ui()->error("Failed to link preview window elements");
gst_object_unref(pipe_);
pipe_ = nullptr;
return;
}
if (gst_element_set_state(pipe_, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
nhlog::ui()->error("Unable to start preview pipeline");
gst_object_unref(pipe_);
pipe_ = nullptr;
return;
}
GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipe_));
busWatchId_ = gst_bus_add_watch(bus, newBusMessage, nullptr);
gst_object_unref(bus);
#else
(void)index;
#endif
}
void
CallManager::setupScreenShareXDP()
{
#ifdef GSTREAMER_AVAILABLE
ScreenCastPortal &sc_portal = ScreenCastPortal::instance();
sc_portal.init();
#endif
}
void
CallManager::setScreenShareType(unsigned int index)
{
#ifdef GSTREAMER_AVAILABLE
closeScreenShare();
if (index >= screenShareTypes_.size())
nhlog::ui()->error("WebRTC: Screen share type index out of range");
screenShareType_ = screenShareTypes_[index];
emit screenShareChanged();
#else
(void)index;
#endif
}
void
CallManager::closeScreenShare()
{
#ifdef GSTREAMER_AVAILABLE
close_preview_stream();
if (!isOnCall()) {
ScreenCastPortal &sc_portal = ScreenCastPortal::instance();
sc_portal.close();
}
#endif
}
namespace {
std::vector<std::string>
getTurnURIs(const mtx::responses::TurnServer &turnServer)
{
// gstreamer expects: turn(s)://username:password@host:port?transport=udp(tcp)
// where username and password are percent-encoded
std::vector<std::string> ret;
for (const auto &uri : turnServer.uris) {
if (auto c = uri.find(':'); c == std::string::npos) {
nhlog::ui()->error("Invalid TURN server uri: {}", uri);
continue;
} else {
std::string scheme = std::string(uri, 0, c);
if (scheme != "turn" && scheme != "turns") {
nhlog::ui()->error("Invalid TURN server uri: {}", uri);
continue;
}
QString encodedUri =
QString::fromStdString(scheme) + "://" +
QUrl::toPercentEncoding(QString::fromStdString(turnServer.username)) + ":" +
QUrl::toPercentEncoding(QString::fromStdString(turnServer.password)) + "@" +
QString::fromStdString(std::string(uri, ++c));
ret.push_back(encodedUri.toStdString());
}
}
return ret;
}
}