diff options
Diffstat (limited to 'jni/feature_stab/db_vlvm/db_utilities.cpp')
| -rw-r--r-- | jni/feature_stab/db_vlvm/db_utilities.cpp | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/jni/feature_stab/db_vlvm/db_utilities.cpp b/jni/feature_stab/db_vlvm/db_utilities.cpp new file mode 100644 index 0000000..ce2093b --- /dev/null +++ b/jni/feature_stab/db_vlvm/db_utilities.cpp @@ -0,0 +1,176 @@ +/* + * 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. + */ + +/* $Id: db_utilities.cpp,v 1.4 2011/06/17 14:03:31 mbansal Exp $ */ + +#include "db_utilities.h" +#include <string.h> +#include <stdio.h> + +float** db_SetupImageReferences_f(float *im,int w,int h) +{ + int i; + float **img; + assert(im); + img=new float* [h]; + for(i=0;i<h;i++) + { + img[i]=im+w*i; + } + return(img); +} + +unsigned char** db_SetupImageReferences_u(unsigned char *im,int w,int h) +{ + int i; + unsigned char **img; + + assert(im); + + img=new unsigned char* [h]; + for(i=0;i<h;i++) + { + img[i]=im+w*i; + } + return(img); +} +float** db_AllocImage_f(int w,int h,int over_allocation) +{ + float **img,*im; + + im=new float [w*h+over_allocation]; + img=db_SetupImageReferences_f(im,w,h); + + return(img); +} + +unsigned char** db_AllocImage_u(int w,int h,int over_allocation) +{ + unsigned char **img,*im; + + im=new unsigned char [w*h+over_allocation]; + img=db_SetupImageReferences_u(im,w,h); + + return(img); +} + +void db_FreeImage_f(float **img,int h) +{ + delete [] (img[0]); + delete [] img; +} + +void db_FreeImage_u(unsigned char **img,int h) +{ + delete [] (img[0]); + delete [] img; +} + +// ----------------------------------------------------------------------------------------------------------- ; +// +// copy image (source to destination) +// ---> must be a 2D image array with the same image size +// ---> the size of the input and output images must be same +// +// ------------------------------------------------------------------------------------------------------------ ; +void db_CopyImage_u(unsigned char **d,const unsigned char * const *s, int w, int h, int over_allocation) +{ + int i; + + for (i=0;i<h;i++) + { + memcpy(d[i],s[i],w*sizeof(unsigned char)); + } + + memcpy(&d[h],&d[h],over_allocation); + +} + +inline void db_WarpImageLutFast_u(const unsigned char * const * src, unsigned char ** dst, int w, int h, + const float * const * lut_x, const float * const * lut_y) +{ + assert(src && dst); + int xd=0, yd=0; + + for ( int i = 0; i < w; ++i ) + for ( int j = 0; j < h; ++j ) + { + //xd = static_cast<unsigned int>(lut_x[j][i]); + //yd = static_cast<unsigned int>(lut_y[j][i]); + xd = (unsigned int)(lut_x[j][i]); + yd = (unsigned int)(lut_y[j][i]); + if ( xd >= w || yd >= h || + xd < 0 || yd < 0) + dst[j][i] = 0; + else + dst[j][i] = src[yd][xd]; + } +} + +inline void db_WarpImageLutBilinear_u(const unsigned char * const * src, unsigned char ** dst, int w, int h, + const float * const * lut_x,const float * const* lut_y) +{ + assert(src && dst); + double xd=0.0, yd=0.0; + + for ( int i = 0; i < w; ++i ) + for ( int j = 0; j < h; ++j ) + { + xd = static_cast<double>(lut_x[j][i]); + yd = static_cast<double>(lut_y[j][i]); + if ( xd > w || yd > h || + xd < 0.0 || yd < 0.0) + dst[j][i] = 0; + else + dst[j][i] = db_BilinearInterpolation(yd, xd, src); + } +} + + +void db_WarpImageLut_u(const unsigned char * const * src, unsigned char ** dst, int w, int h, + const float * const * lut_x,const float * const * lut_y, int type) +{ + switch (type) + { + case DB_WARP_FAST: + db_WarpImageLutFast_u(src,dst,w,h,lut_x,lut_y); + break; + case DB_WARP_BILINEAR: + db_WarpImageLutBilinear_u(src,dst,w,h,lut_x,lut_y); + break; + default: + break; + } +} + + +void db_PrintDoubleVector(double *a,long size) +{ + printf("[ "); + for(long i=0;i<size;i++) printf("%lf ",a[i]); + printf("]"); +} + +void db_PrintDoubleMatrix(double *a,long rows,long cols) +{ + printf("[\n"); + for(long i=0;i<rows;i++) + { + for(long j=0;j<cols;j++) printf("%lf ",a[i*cols+j]); + printf("\n"); + } + printf("]"); +} |