tdesktop/Telegram/SourceFiles/media/media_audio_track.h

143 lines
3.0 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
*/
#pragma once
#include "base/timer.h"
namespace Media {
namespace Audio {
class Instance;
class Track {
public:
Track(gsl::not_null<Instance*> instance);
void samplePeakEach(TimeMs peakDuration);
void fillFromData(base::byte_vector &&data);
void fillFromFile(const FileLocation &location);
void fillFromFile(const QString &filePath);
void playOnce() {
playWithLooping(false);
}
void playInLoop() {
playWithLooping(true);
}
bool isLooping() const {
return _looping;
}
bool isActive() const {
return _active;
}
bool failed() const {
return _failed;
}
int64 getLengthMs() const {
return _lengthMs;
}
float64 getPeakValue(TimeMs when) const;
void detachFromDevice();
void reattachToDevice();
void updateState();
~Track();
private:
void finish();
void ensureSourceCreated();
void playWithLooping(bool looping);
gsl::not_null<Instance*> _instance;
bool _failed = false;
bool _active = false;
bool _looping = false;
float64 _volume = 1.;
int64 _samplesCount = 0;
int32 _sampleRate = 0;
base::byte_vector _samples;
TimeMs _peakDurationMs = 0;
int _peakEachPosition = 0;
std::vector<uint16> _peaks;
uint16 _peakValueMin = 0;
uint16 _peakValueMax = 0;
TimeMs _lengthMs = 0;
TimeMs _stateUpdatedAt = 0;
int32 _alFormat = 0;
int64 _alPosition = 0;
uint32 _alSource = 0;
uint32 _alBuffer = 0;
};
class Instance {
public:
// Thread: Main.
Instance();
std::unique_ptr<Track> createTrack();
base::Observable<Track*> &trackFinished() {
return _trackFinished;
}
void detachTracks();
void reattachTracks();
bool hasActiveTracks() const;
void scheduleDetachFromDevice();
void scheduleDetachIfNotUsed();
void stopDetachIfNotUsed();
~Instance();
private:
friend class Track;
void registerTrack(Track *track);
void unregisterTrack(Track *track);
void trackStarted(Track *track);
void trackFinished(Track *track);
private:
std::set<Track*> _tracks;
base::Observable<Track*> _trackFinished;
base::Timer _updateTimer;
base::Timer _detachFromDeviceTimer;
bool _detachFromDeviceForce = false;
};
Instance &Current();
} // namespace Audio
} // namespace Media