tdesktop/Telegram/SourceFiles/media/media_audio_capture.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
struct AVFrame;
namespace Media {
namespace Capture {
void Start();
void Finish();
class Instance : public QObject {
Q_OBJECT
public:
Instance();
void check();
bool available() const {
return _available;
}
~Instance();
signals:
void start();
void stop(bool needResult);
void done(QByteArray data, VoiceWaveform waveform, qint32 samples);
void updated(quint16 level, qint32 samples);
void error();
private:
class Inner;
friend class Inner;
bool _available = false;
QThread _thread;
Inner *_inner;
};
Instance *instance();
class Instance::Inner : public QObject {
Q_OBJECT
public:
Inner(QThread *thread);
~Inner();
signals:
void error();
void updated(quint16 level, qint32 samples);
void done(QByteArray data, VoiceWaveform waveform, qint32 samples);
public slots:
void onInit();
void onStart();
void onStop(bool needResult);
void onTimeout();
private:
void processFrame(int32 offset, int32 framesize);
void writeFrame(AVFrame *frame);
// Writes the packets till EAGAIN is got from av_receive_packet()
// Returns number of packets written or -1 on error
int writePackets();
struct Private;
Private *d;
QTimer _timer;
QByteArray _captured;
};
} // namespace Capture
} // namespace Media