tdesktop/Telegram/SourceFiles/media/player/media_player_instance.cpp

379 lines
10 KiB
C++

/*
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
*/
#include "media/player/media_player_instance.h"
#include "media/media_audio.h"
#include "media/media_audio_capture.h"
#include "observer_peer.h"
#include "messenger.h"
#include "auth_session.h"
#include "calls/calls_instance.h"
#include "history/history_media.h"
namespace Media {
namespace Player {
namespace {
Instance *SingleInstance = nullptr;
} // namespace
void start() {
Audio::Start();
Capture::Start();
SingleInstance = new Instance();
}
void finish() {
delete base::take(SingleInstance);
Capture::Finish();
Audio::Finish();
}
Instance::Instance()
: _songData(AudioMsgId::Type::Song, OverviewMusicFiles)
, _voiceData(AudioMsgId::Type::Voice, OverviewRoundVoiceFiles) {
subscribe(Media::Player::Updated(), [this](const AudioMsgId &audioId) {
handleSongUpdate(audioId);
});
auto observeEvents = Notify::PeerUpdate::Flag::SharedMediaChanged;
subscribe(Notify::PeerUpdated(), Notify::PeerUpdatedHandler(observeEvents, [this](const Notify::PeerUpdate &update) {
notifyPeerUpdated(update);
}));
subscribe(Global::RefSelfChanged(), [this] {
if (!App::self()) {
handleLogout();
}
});
// While we have one Media::Player::Instance for all authsessions we have to do this.
auto handleAuthSessionChange = [this] {
if (AuthSession::Exists()) {
subscribe(AuthSession::Current().calls().currentCallChanged(), [this](Calls::Call *call) {
if (call) {
pause(AudioMsgId::Type::Voice);
pause(AudioMsgId::Type::Song);
}
});
}
};
subscribe(Messenger::Instance().authSessionChanged(), [handleAuthSessionChange] {
handleAuthSessionChange();
});
handleAuthSessionChange();
}
AudioMsgId::Type Instance::getActiveType() const {
auto voiceData = getData(AudioMsgId::Type::Voice);
if (voiceData->current) {
auto state = mixer()->currentState(voiceData->type);
if (voiceData->current == state.id && !IsStoppedOrStopping(state.state)) {
return voiceData->type;
}
}
return AudioMsgId::Type::Song;
}
void Instance::notifyPeerUpdated(const Notify::PeerUpdate &update) {
checkPeerUpdate(AudioMsgId::Type::Song, update);
checkPeerUpdate(AudioMsgId::Type::Voice, update);
}
void Instance::checkPeerUpdate(AudioMsgId::Type type, const Notify::PeerUpdate &update) {
if (auto data = getData(type)) {
if (!data->history) {
return;
}
if (!(update.mediaTypesMask & (1 << data->overview))) {
return;
}
if (update.peer != data->history->peer && (!data->migrated || update.peer != data->migrated->peer)) {
return;
}
rebuildPlaylist(data);
}
}
void Instance::handleSongUpdate(const AudioMsgId &audioId) {
emitUpdate(audioId.type(), [&audioId](const AudioMsgId &playing) {
return (audioId == playing);
});
}
void Instance::setCurrent(const AudioMsgId &audioId) {
if (auto data = getData(audioId.type())) {
if (data->current != audioId) {
data->current = audioId;
data->isPlaying = false;
auto history = data->history;
auto migrated = data->migrated;
auto item = data->current ? App::histItemById(data->current.contextId()) : nullptr;
if (item) {
data->history = item->history()->peer->migrateTo() ? App::history(item->history()->peer->migrateTo()) : item->history();
data->migrated = data->history->peer->migrateFrom() ? App::history(data->history->peer->migrateFrom()) : nullptr;
} else {
data->history = nullptr;
data->migrated = nullptr;
}
_trackChangedNotifier.notify(data->type, true);
if (data->history != history || data->migrated != migrated) {
rebuildPlaylist(data);
}
}
}
}
void Instance::rebuildPlaylist(Data *data) {
Expects(data != nullptr);
data->playlist.clear();
if (data->history && data->history->loadedAtBottom()) {
auto &historyOverview = data->history->overview[data->overview];
if (data->migrated && data->migrated->loadedAtBottom() && data->history->loadedAtTop()) {
auto &migratedOverview = data->migrated->overview[data->overview];
data->playlist.reserve(migratedOverview.size() + historyOverview.size());
for_const (auto msgId, migratedOverview) {
data->playlist.push_back(FullMsgId(data->migrated->channelId(), msgId));
}
} else {
data->playlist.reserve(historyOverview.size());
}
for_const (auto msgId, historyOverview) {
data->playlist.push_back(FullMsgId(data->history->channelId(), msgId));
}
}
_playlistChangedNotifier.notify(data->type, true);
}
bool Instance::moveInPlaylist(Data *data, int delta, bool autonext) {
Expects(data != nullptr);
auto index = data->playlist.indexOf(data->current.contextId());
auto newIndex = index + delta;
if (!data->current || index < 0 || newIndex < 0 || newIndex >= data->playlist.size()) {
rebuildPlaylist(data);
return false;
}
auto msgId = data->playlist[newIndex];
if (auto item = App::histItemById(msgId)) {
if (auto media = item->getMedia()) {
if (auto document = media->getDocument()) {
if (autonext) {
_switchToNextNotifier.notify({ data->current, msgId });
}
DocumentOpenClickHandler::doOpen(media->getDocument(), item, ActionOnLoadPlayInline);
return true;
}
}
}
return false;
}
Instance *instance() {
Expects(SingleInstance != nullptr);
return SingleInstance;
}
void Instance::play(AudioMsgId::Type type) {
auto state = mixer()->currentState(type);
if (state.id) {
if (IsStopped(state.state)) {
play(state.id);
} else {
mixer()->resume(state.id);
}
} else if (auto data = getData(type)) {
if (data->current) {
play(data->current);
}
}
}
void Instance::play(const AudioMsgId &audioId) {
if (!audioId) {
return;
}
if (audioId.audio()->song() || audioId.audio()->voice()) {
mixer()->play(audioId);
setCurrent(audioId);
if (audioId.audio()->loading()) {
documentLoadProgress(audioId.audio());
}
} else if (audioId.audio()->isRoundVideo()) {
if (auto item = App::histItemById(audioId.contextId())) {
if (auto media = item->getMedia()) {
media->playInline();
}
}
}
}
void Instance::pause(AudioMsgId::Type type) {
auto state = mixer()->currentState(type);
if (state.id) {
mixer()->pause(state.id);
}
}
void Instance::stop(AudioMsgId::Type type) {
auto state = mixer()->currentState(type);
if (state.id) {
mixer()->stop(state.id);
}
}
void Instance::playPause(AudioMsgId::Type type) {
auto state = mixer()->currentState(type);
if (state.id) {
if (IsStopped(state.state)) {
play(state.id);
} else if (IsPaused(state.state) || state.state == State::Pausing) {
mixer()->resume(state.id);
} else {
mixer()->pause(state.id);
}
} else if (auto data = getData(type)) {
if (data->current) {
play(data->current);
}
}
}
bool Instance::next(AudioMsgId::Type type) {
if (auto data = getData(type)) {
return moveInPlaylist(data, 1, false);
}
return false;
}
bool Instance::previous(AudioMsgId::Type type) {
if (auto data = getData(type)) {
return moveInPlaylist(data, -1, false);
}
return false;
}
void Instance::playPauseCancelClicked(AudioMsgId::Type type) {
if (isSeeking(type)) {
return;
}
auto state = mixer()->currentState(type);
auto stopped = IsStoppedOrStopping(state.state);
auto showPause = !stopped && (state.state == State::Playing || state.state == State::Resuming || state.state == State::Starting);
auto audio = state.id.audio();
if (audio && audio->loading()) {
audio->cancel();
} else if (showPause) {
pause(type);
} else {
play(type);
}
}
void Instance::startSeeking(AudioMsgId::Type type) {
if (auto data = getData(type)) {
data->seeking = data->current;
}
pause(type);
emitUpdate(type, [](const AudioMsgId &playing) { return true; });
}
void Instance::stopSeeking(AudioMsgId::Type type) {
if (auto data = getData(type)) {
data->seeking = AudioMsgId();
}
emitUpdate(type, [](const AudioMsgId &playing) { return true; });
}
void Instance::documentLoadProgress(DocumentData *document) {
emitUpdate(document->song() ? AudioMsgId::Type::Song : AudioMsgId::Type::Voice, [document](const AudioMsgId &audioId) {
return (audioId.audio() == document);
});
}
template <typename CheckCallback>
void Instance::emitUpdate(AudioMsgId::Type type, CheckCallback check) {
auto state = mixer()->currentState(type);
if (!state.id || !check(state.id)) {
return;
}
setCurrent(state.id);
_updatedNotifier.notify(state, true);
if (auto data = getData(type)) {
if (data->isPlaying && state.state == State::StoppedAtEnd) {
if (data->repeatEnabled) {
play(data->current);
} else if (!moveInPlaylist(data, 1, true)) {
_tracksFinishedNotifier.notify(type);
}
}
auto isPlaying = !IsStopped(state.state);
if (data->isPlaying != isPlaying) {
data->isPlaying = isPlaying;
if (data->isPlaying) {
preloadNext(data);
}
}
}
}
void Instance::preloadNext(Data *data) {
Expects(data != nullptr);
if (!data->current) {
return;
}
auto index = data->playlist.indexOf(data->current.contextId());
if (index < 0) {
return;
}
auto nextIndex = index + 1;
if (nextIndex >= data->playlist.size()) {
return;
}
if (auto item = App::histItemById(data->playlist[nextIndex])) {
if (auto media = item->getMedia()) {
if (auto document = media->getDocument()) {
if (!document->loaded(DocumentData::FilePathResolveSaveFromDataSilent)) {
DocumentOpenClickHandler::doOpen(document, nullptr, ActionOnLoadNone);
}
}
}
}
}
void Instance::handleLogout() {
*getData(AudioMsgId::Type::Voice) = Data(AudioMsgId::Type::Voice, OverviewRoundVoiceFiles);
*getData(AudioMsgId::Type::Song) = Data(AudioMsgId::Type::Song, OverviewMusicFiles);
_usePanelPlayer.notify(false, true);
}
} // namespace Player
} // namespace Media