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// Copyright (C) 2010 Dirk Vanden Boer <dirk.vdb@gmail.com>
//
// 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 2 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, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#pragma once
#include "videoframe.h"
#include "histogram.h"
namespace ffmpegthumbnailer
{
namespace utils
{
inline void generateHistogram(const VideoFrame& videoFrame, Histogram<int>& histogram)
{
for (int i = 0; i < videoFrame.height; ++i)
{
int pixelIndex = i * videoFrame.lineSize;
for (int j = 0; j < videoFrame.width * 3; j += 3)
{
++histogram.r[videoFrame.frameData[pixelIndex + j]];
++histogram.g[videoFrame.frameData[pixelIndex + j + 1]];
++histogram.b[videoFrame.frameData[pixelIndex + j + 2]];
}
}
}
}
}
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