67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2021 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef AUDIOOUTPUTDEVICEPROXY_H
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#define AUDIOOUTPUTDEVICEPROXY_H
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#include <QFile>
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#include "common/define.h"
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#include "tempoprocessor.h"
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namespace olive {
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/**
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* @brief QIODevice wrapper that can adjust speed/reverse an audio file
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*/
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class AudioOutputDeviceProxy : public QIODevice
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{
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Q_OBJECT
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public:
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AudioOutputDeviceProxy(QObject* parent = nullptr);
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void SetParameters(const AudioParams& params);
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void SetDevice(QIODevice *device, qint64 offset, int playback_speed);
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virtual void close() override;
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protected:
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virtual qint64 readData(char *data, qint64 maxlen) override;
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virtual qint64 writeData(const char *data, qint64 maxSize) override;
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private:
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qint64 ReverseAwareRead(char* data, qint64 maxlen);
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QIODevice* device_;
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TempoProcessor tempo_processor_;
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AudioParams params_;
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int playback_speed_;
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};
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}
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#endif // AUDIOOUTPUTDEVICEPROXY_H
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