itsmattkc
ee81a47f2e
Qt's audio system has served us well, but it's a little limited moving forward. PortAudio is a mature and versatile library that will allow for better audio for users.
86 lines
1.7 KiB
C++
86 lines
1.7 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 PREVIEWAUDIODEVICE_H
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#define PREVIEWAUDIODEVICE_H
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#include "previewautocacher.h"
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namespace olive {
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class PreviewAudioDevice : public QIODevice
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{
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Q_OBJECT
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public:
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PreviewAudioDevice(int bytes_per_frame, QObject *parent = nullptr);
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virtual ~PreviewAudioDevice() override;
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void StartQueuing();
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virtual bool isSequential() const override;
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virtual qint64 readData(char *data, qint64 maxSize) override;
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virtual qint64 writeData(const char *data, qint64 length) override;
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int bytes_per_frame() const
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{
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return bytes_per_frame_;
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}
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void set_notify_interval(qint64 i)
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{
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notify_interval_ = i;
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}
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signals:
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void Notify();
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private:
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enum LockMethod {
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kDontLock,
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kTryLock,
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kFullLock
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};
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bool SwapBuffers(LockMethod m);
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QMutex lock_;
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QByteArray internal_buffer_[2];
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QByteArray *using_;
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QByteArray *pushing_;
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QAtomicInt swap_requested_;
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int bytes_per_frame_;
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qint64 notify_interval_;
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qint64 bytes_read_;
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};
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}
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#endif // PREVIEWAUDIODEVICE_H
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