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annotate fir/readfir.c @ 376:9b3e5be96bab

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fir2freq: a tool for analyzing captured FIR coefficient sets
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 02 Aug 2021 04:59:46 +0000
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9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
parents:
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1 /*
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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2 * Reading FIR coefficient tables from formatted ASCII files,
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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3 * modified version for host processing.
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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4 */
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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5
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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6 #include <sys/types.h>
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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7 #include <ctype.h>
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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8 #include <stdio.h>
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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9 #include <string.h>
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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10 #include <strings.h>
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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11 #include <stdlib.h>
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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12
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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13 #include "rdcommon.c"
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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14
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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15 static int *writeptr;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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16
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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17 static
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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18 process_number()
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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19 {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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20 char *field;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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21 int rc, number;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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22
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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23 rc = get_field(&field);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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24 if (rc < 0)
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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25 return(rc);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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26 if (!rc) {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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27 printf("error: %s is too short for a FIR coefficient table\n",
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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28 filename);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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29 return(-1);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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30 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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31 number = strtol(field, 0, 0);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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32 if (number >= 32768)
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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33 number -= 65536;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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34 *writeptr++ = number;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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35 return(0);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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36 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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37
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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38 read_fir_coeff_table_int(filename_arg, rdbuf)
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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39 char *filename_arg;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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40 int *rdbuf;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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41 {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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42 char *field;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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43 int rc, i;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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44
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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45 filename = filename_arg;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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46 rdfile = fopen(filename, "r");
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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47 if (!rdfile) {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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48 perror(filename);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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49 return(-1);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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50 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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51 lineno = 0;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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52 line_nfields = 0;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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53 rc = get_field(&field);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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54 if (rc <= 0) {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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55 not_valid_fir_table:
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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56 fprintf(stderr,
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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57 "error: %s is not a valid FIR coefficient table file\n",
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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58 filename);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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59 fclose(rdfile);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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60 return(-1);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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61 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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62 if (strcmp(field, "fir-coeff-table"))
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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63 goto not_valid_fir_table;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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64 writeptr = rdbuf;
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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65 for (i = 0; i < 31; i++) {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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66 rc = process_number();
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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67 if (rc < 0) {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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68 fclose(rdfile);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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69 return(rc);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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70 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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71 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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72 rc = get_field(&field);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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73 fclose(rdfile);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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74 if (rc < 0)
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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75 return(rc);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
Mychaela Falconia <falcon@freecalypso.org>
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76 if (rc) {
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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77 fprintf(stderr,
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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78 "error: %s is too long for a FIR coefficient table\n",
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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79 filename);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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80 return(-1);
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Mychaela Falconia <falcon@freecalypso.org>
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81 }
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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82 return(0);
9b3e5be96bab fir2freq: a tool for analyzing captured FIR coefficient sets
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83 }