diff options
Diffstat (limited to 'src/plugins/directshow/helpers/directshowvideobuffer.cpp')
-rw-r--r-- | src/plugins/directshow/helpers/directshowvideobuffer.cpp | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/plugins/directshow/helpers/directshowvideobuffer.cpp b/src/plugins/directshow/helpers/directshowvideobuffer.cpp new file mode 100644 index 000000000..3204e9f7e --- /dev/null +++ b/src/plugins/directshow/helpers/directshowvideobuffer.cpp @@ -0,0 +1,84 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "directshowvideobuffer.h" + +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 = 0; + + if (m_sample->GetPointer(&bytes) == S_OK) { + m_mapMode = mode; + + return reinterpret_cast<uchar *>(bytes); + } + } + return 0; +} + +void DirectShowVideoBuffer::unmap() +{ + m_mapMode = NotMapped; +} + +QAbstractVideoBuffer::MapMode DirectShowVideoBuffer::mapMode() const +{ + return m_mapMode; +} |