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/*
* Copyright (C) 2017 Konsulko Group
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <OutputBuffer.h>
OutputBuffer::OutputBuffer(const QAudioFormat &format, QObject *parent)
: QIODevice(parent)
{
m_sample_size = format.bytesPerFrame();
}
OutputBuffer::~OutputBuffer()
{
}
void OutputBuffer::start()
{
open(QIODevice::ReadWrite);
}
void OutputBuffer::stop()
{
close();
QMutexLocker locker(&m_mutex);
m_buffer.clear();
}
qint64 OutputBuffer::readData(char *data, qint64 len)
{
QMutexLocker locker(&m_mutex);
int n = qMin((qint64) m_buffer.size(), len);
// Make sure reads are in units of the sample size
n = n - (n % m_sample_size);
if (!m_buffer.isEmpty()) {
memcpy(data, m_buffer.constData(), n);
m_buffer.remove(0, n);
}
return n;
}
qint64 OutputBuffer::writeData(const char *data, qint64 len)
{
QMutexLocker locker(&m_mutex);
m_buffer.append(data, len);
return len;
}
qint64 OutputBuffer::bytesAvailable()
{
QMutexLocker locker(&m_mutex);
return m_buffer.size() + QIODevice::bytesAvailable();
}
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