1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 // Pyramid.h 18 19 #ifndef PYRAMID_H 20 #define PYRAMID_H 21 22 #include "ImageUtils.h" 23 24 typedef unsigned short int real; 25 26 // Structure containing a packed pyramid of type ImageTypeShort. Used for pyramid 27 // blending, among other things. 28 29 class PyramidShort 30 { 31 32 public: 33 34 ImageTypeShort *ptr; // Pointer containing the image 35 real width, height; // Width and height of input images 36 real numChannels; // Number of channels in input images 37 real border; // border size 38 real pitch; // Pitch. Used for moving through image efficiently. 39 40 static PyramidShort *allocatePyramidPacked(real width, real height, real levels, real border = 0); 41 static PyramidShort *allocateImage(real width, real height, real border); 42 static void createPyramid(ImageType image, PyramidShort *pyramid, int last = 3 ); 43 static void freeImage(PyramidShort *image); 44 45 static unsigned int calcStorage(real width, real height, real border2, int levels, int *lines); 46 47 static void BorderSpread(PyramidShort *pyr, int left, int right, int top, int bot); 48 static void BorderExpandOdd(PyramidShort *in, PyramidShort *out, PyramidShort *scr, int mode); 49 static int BorderExpand(PyramidShort *pyr, int nlev, int mode); 50 static int BorderReduce(PyramidShort *pyr, int nlev); 51 static void BorderReduceOdd(PyramidShort *in, PyramidShort *out, PyramidShort *scr); 52 }; 53 54 #endif 55