Mercurial > hg > wm
view Meerwald/param_stuff.c @ 4:9cf6ec970448 v0.5
mention filter param.
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Tue, 14 Aug 2007 21:13:11 +0200 |
parents | acb6967ee76d |
children | f83ef905a63d |
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#ifdef PARAM_STUFF { #define MAXNALPHA 32 double alpha[MAXNALPHA]; char *alpha_str = getenv("PARAM_ALPHA"); double alpha_value; int alpha_len = 0; int param_len[MAXNALPHA]; char *param_len_str = getenv("PARAM_LEN"); int param_len_value; int param_len_len = 0; int param_len_sum = 0; char buf[1024] = ""; char *v; if (alpha_str && strlen(alpha_str) < sizeof(buf) && strcmp(alpha_str, "") ) { strcpy(buf, alpha_str); v = strtok(buf, "\",; "); do { alpha_value = atof(v); if (alpha_value < -M_PI || alpha_value >= M_PI) { fprintf(stderr, "%s: parametric - alpha %f out of range\n", progname, alpha_value); exit(1); } alpha[alpha_len] = alpha_value; alpha_len++; } while (v = strtok(NULL, "\",; ")); if( param_len_str && strlen(param_len_str) < sizeof(buf) && strcmp(param_len_str, "") ) { /* There was an parameter length environment variable. */ strcpy(buf, param_len_str); v = strtok(buf, "\",; "); do { param_len_value = atoi(v); if (param_len_value <= 0) { fprintf(stderr, "%s: parameter length %d out of range\n", progname, param_len_value); exit(1); } param_len[param_len_len] = param_len_value; param_len_len++; param_len_sum += param_len_value; } while (v = strtok(NULL, "\",; ")); } else { /* No length variable given. For backward compatability we use all parameters for one filter and therefore for all levels. */ param_len[0] = alpha_len; param_len_len = 1; param_len_sum = alpha_len; } /* If we do not get a parameter length value for every decomposition level then we reuse the last supplied value for the remaining levels. */ if (param_len_len < level+1) { int last_param_len = param_len[ param_len_len - 1 ]; for(; param_len_len < level+1; param_len_len++ ) { param_len[ param_len_len ] = last_param_len; param_len_sum += last_param_len; } } /* If the number of supplied alphas is lower than is required for by param_len then copy the last filter parameters to the remaining levels. */ if( alpha_len < param_len_sum ) { int i; int last_param_len = param_len[ param_len_len - 1 ]; int last_start = alpha_len - last_param_len; for( i=0; alpha_len < param_len_sum; alpha_len++, i++ ) { alpha[ alpha_len ] = alpha[ last_start + (i % last_param_len) ]; } } if (verbose > 1) { int i, j; int cur_sum = 0; fprintf(stderr, "%s: parametric, number of levels: %d\n", progname, level); for (i = 0; i < level+1; i++) { fprintf(stderr, " %d filter parameters for level %d: ", param_len[i], i); for (j = 0; j < param_len[i]; j++) { fprintf(stderr, "%f ", alpha[cur_sum + j]); } fprintf(stderr, "\n"); cur_sum += param_len[i]; } } dwt_param_filter(alpha, param_len); } /* if( alpha_str... */ } #endif