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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Pyramid.h
#ifndef PYRAMID_H
#define PYRAMID_H
#include "ImageUtils.h"
typedef unsigned short int real;
// Structure containing a packed pyramid of type ImageTypeShort. Used for pyramid
// blending, among other things.
class PyramidShort
{
public:
ImageTypeShort *ptr; // Pointer containing the image
real width, height; // Width and height of input images
real numChannels; // Number of channels in input images
real border; // border size
real pitch; // Pitch. Used for moving through image efficiently.
static PyramidShort *allocatePyramidPacked(real width, real height, real levels, real border = 0);
static PyramidShort *allocateImage(real width, real height, real border);
static void createPyramid(ImageType image, PyramidShort *pyramid, int last = 3 );
static void freeImage(PyramidShort *image);
static unsigned int calcStorage(real width, real height, real border2, int levels, int *lines);
static void BorderSpread(PyramidShort *pyr, int left, int right, int top, int bot);
static void BorderExpandOdd(PyramidShort *in, PyramidShort *out, PyramidShort *scr, int mode);
static int BorderExpand(PyramidShort *pyr, int nlev, int mode);
static int BorderReduce(PyramidShort *pyr, int nlev);
static void BorderReduceOdd(PyramidShort *in, PyramidShort *out, PyramidShort *scr);
};
#endif
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