83 lines
1.8 KiB
C++
83 lines
1.8 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 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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#include "previewaudiodevice.h"
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namespace olive {
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PreviewAudioDevice::PreviewAudioDevice(QObject *parent) :
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notify_interval_(0),
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bytes_read_(0)
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{
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}
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PreviewAudioDevice::~PreviewAudioDevice()
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{
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close();
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}
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bool PreviewAudioDevice::isSequential() const
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{
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return true;
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}
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qint64 PreviewAudioDevice::readData(char *data, qint64 maxSize)
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{
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QMutexLocker locker(&lock_);
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qint64 copy_length = qMin(maxSize, qint64(buffer_.size()));
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if (copy_length) {
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qint64 new_bytes_read = bytes_read_ + copy_length;
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if (notify_interval_ > 0) {
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if ((bytes_read_ / notify_interval_) != (new_bytes_read / notify_interval_)) {
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emit Notify();
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}
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}
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bytes_read_ = new_bytes_read;
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memcpy(data, buffer_.constData(), copy_length);
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buffer_ = buffer_.mid(copy_length);
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}
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return copy_length;
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}
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qint64 PreviewAudioDevice::writeData(const char *data, qint64 length)
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{
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QMutexLocker locker(&lock_);
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buffer_.append(data, length);
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return length;
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}
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void PreviewAudioDevice::clear()
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{
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QMutexLocker locker(&lock_);
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buffer_.clear();
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bytes_read_ = 0;
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}
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}
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