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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
****************************************************************************/
#include "directshowvideobuffer.h"
QT_BEGIN_NAMESPACE
DirectShowVideoBuffer::DirectShowVideoBuffer(IMediaSample *sample, int bytesPerLine)
: QAbstractVideoBuffer(NoHandle)
, m_sample(sample)
, m_bytesPerLine(bytesPerLine)
, m_mapMode(NotMapped)
{
m_sample->AddRef();
}
DirectShowVideoBuffer::~DirectShowVideoBuffer()
{
m_sample->Release();
}
uchar *DirectShowVideoBuffer::map(MapMode mode, int *numBytes, int *bytesPerLine)
{
if (m_mapMode == NotMapped && mode != NotMapped) {
if (numBytes)
*numBytes = m_sample->GetActualDataLength();
if (bytesPerLine)
*bytesPerLine = m_bytesPerLine;
BYTE *bytes = nullptr;
if (m_sample->GetPointer(&bytes) == S_OK) {
m_mapMode = mode;
return reinterpret_cast<uchar *>(bytes);
}
}
return nullptr;
}
void DirectShowVideoBuffer::unmap()
{
m_mapMode = NotMapped;
}
QAbstractVideoBuffer::MapMode DirectShowVideoBuffer::mapMode() const
{
return m_mapMode;
}
QT_END_NAMESPACE
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