88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
/***
|
|
|
|
Olive - Non-Linear Video Editor
|
|
Copyright (C) 2022 Olive Team
|
|
Modifications Copyright (C) 2025 mikesolar
|
|
|
|
This program 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.
|
|
|
|
This program 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.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
***/
|
|
|
|
#include "previewaudiodevice.h"
|
|
|
|
namespace olive
|
|
{
|
|
|
|
PreviewAudioDevice::PreviewAudioDevice(QObject *parent)
|
|
: QIODevice(parent)
|
|
, bytes_per_frame_(0)
|
|
, notify_interval_(0)
|
|
, bytes_read_(0)
|
|
{
|
|
}
|
|
|
|
PreviewAudioDevice::~PreviewAudioDevice()
|
|
{
|
|
close();
|
|
}
|
|
|
|
bool PreviewAudioDevice::isSequential() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
qint64 PreviewAudioDevice::readData(char *data, qint64 maxSize)
|
|
{
|
|
QMutexLocker locker(&lock_);
|
|
|
|
qint64 copy_length = qMin(maxSize, qint64(buffer_.size()));
|
|
|
|
if (copy_length) {
|
|
qint64 new_bytes_read = bytes_read_ + copy_length;
|
|
|
|
if (notify_interval_ > 0) {
|
|
if ((bytes_read_ / notify_interval_) !=
|
|
(new_bytes_read / notify_interval_)) {
|
|
emit Notify();
|
|
}
|
|
}
|
|
|
|
bytes_read_ = new_bytes_read;
|
|
|
|
memcpy(data, buffer_.constData(), copy_length);
|
|
buffer_ = buffer_.mid(copy_length);
|
|
}
|
|
|
|
return copy_length;
|
|
}
|
|
|
|
qint64 PreviewAudioDevice::writeData(const char *data, qint64 length)
|
|
{
|
|
QMutexLocker locker(&lock_);
|
|
|
|
buffer_.append(data, length);
|
|
|
|
return length;
|
|
}
|
|
|
|
void PreviewAudioDevice::clear()
|
|
{
|
|
QMutexLocker locker(&lock_);
|
|
|
|
buffer_.clear();
|
|
bytes_read_ = 0;
|
|
}
|
|
|
|
}
|