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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qandroidmultimediautils.h"
#include <qlist.h>
QT_BEGIN_NAMESPACE
int qt_findClosestValue(const QList<int> &list, int value)
{
if (list.size() < 2)
return 0;
int begin = 0;
int end = list.size() - 1;
int pivot = begin + (end - begin) / 2;
int v = list.at(pivot);
while (end - begin > 1) {
if (value == v)
return pivot;
if (value > v)
begin = pivot;
else
end = pivot;
pivot = begin + (end - begin) / 2;
v = list.at(pivot);
}
return value - v >= list.at(pivot + 1) - value ? pivot + 1 : pivot;
}
bool qt_sizeLessThan(const QSize &s1, const QSize &s2)
{
return s1.width() * s1.height() < s2.width() * s2.height();
}
void qt_convert_NV21_to_ARGB32(const uchar *yuv, quint32 *rgb, int width, int height)
{
const int frameSize = width * height;
int a = 0;
for (int i = 0, ci = 0; i < height; ++i, ci += 1) {
for (int j = 0, cj = 0; j < width; ++j, cj += 1) {
int y = (0xff & ((int) yuv[ci * width + cj]));
int v = (0xff & ((int) yuv[frameSize + (ci >> 1) * width + (cj & ~1) + 0]));
int u = (0xff & ((int) yuv[frameSize + (ci >> 1) * width + (cj & ~1) + 1]));
y = y < 16 ? 16 : y;
int r = (int) (1.164f * (y - 16) + 1.596f * (v - 128));
int g = (int) (1.164f * (y - 16) - 0.813f * (v - 128) - 0.391f * (u - 128));
int b = (int) (1.164f * (y - 16) + 2.018f * (u - 128));
r = qBound(0, r, 255);
g = qBound(0, g, 255);
b = qBound(0, b, 255);
rgb[a++] = 0xff000000 | (r << 16) | (g << 8) | b;
}
}
}
QT_END_NAMESPACE
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