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1 #include "wm.h"
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2 #include "coeff.h"
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3
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4 double **alloc_coeffs(int cols, int rows) {
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5 double **p;
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6 int i;
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7
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8 p = (double **)malloc(rows * sizeof(double *));
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9 if (!p) {
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10 #ifdef DEBUG
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11 fprintf(stderr, "alloc_coeffs(): malloc() failed\n");
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12 exit(1);
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13 #else
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14 return NULL;
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15 #endif
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16 }
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3
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17 p[0] = malloc(rows * cols * sizeof(double));
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0
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18 if (!p[0]) {
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19 #ifdef DEBUG
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20 fprintf(stderr, "alloc_coeffs(): malloc() failed\n");
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21 exit(1);
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22 #else
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23 free(p);
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24 return NULL;
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25 #endif
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26 }
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27 for (i = 1; i < rows; i++) {
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28 p[i] = &(p[0][i * cols]);
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29 }
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30
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31 return p;
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32 }
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33
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34 void free_coeffs(double **coeffs) {
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35 free(coeffs[0]);
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36 free(coeffs);
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37 }
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38
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39 double **alloc_coeffs_8x8() {
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40 return alloc_coeffs(8, 8);
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41 }
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42
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43 void print_coeffs_8x8(double **coeffs) {
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44 int i, j;
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45
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46 for (i = 0; i < 8; i++) {
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47 for (j = 0; j < 8; j++)
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48 fprintf(stderr, "%8.2f ", coeffs[i][j]);
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49 fprintf(stderr, "\n");
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50 }
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51 }
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52
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53 void print_coeffs(double **coeffs, int c, int r, int w, int h) {
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54 int i, j;
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55 double *p;
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56
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57 #ifdef DEBUG
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58 if (!coeffs) {
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59 fprintf(stderr, "print_coeffs(): NULL pixels\n");
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60 }
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61 if (w <= 0 || h <= 0 || c < 0 || r < 0) {
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62 fprintf(stderr, "print_coeffs(): block dimension out of range\n");
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63 }
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64 #endif
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65
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66 for (j = r; j < r + h; j++) {
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67 p = &coeffs[j][c];
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68 for (i = 0; i < w; i++)
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69 fprintf(stderr, "%8.2f ", *(p++));
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70 fprintf(stderr, "\n");
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71 }
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72 }
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