FreeCalypso > hg > ice1-trau-tester

annotate ater/read_file.c @ 52:626180a15857 default tip

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ater play-d144: emit E-data frames manually, osmo_trau_frame_encode() is currently broken for this frame type
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 25 Sep 2024 06:40:43 +0000
parents db39e8855f3d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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20
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1 /*
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2 * Here we implement the function that reads binary files
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3 * in our ad hoc format for TRAU testing.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <sys/file.h>
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8 #include <sys/stat.h>
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9 #include <stdint.h>
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10 #include <stdbool.h>
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11 #include <stdio.h>
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12 #include <stdlib.h>
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13 #include <string.h>
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14 #include <unistd.h>
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15
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16 #include "read_file.h"
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17
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18 static int check_magic(const uint8_t *buf, unsigned nframes, bool *got_fr,
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19 bool *got_efr)
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20 {
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21 unsigned n;
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22
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23 for (n = 0; n < nframes; n++) {
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24 switch (*buf & 0xF0) {
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25 case 0xC0:
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26 *got_efr = true;
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27 break;
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28 case 0xD0:
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29 *got_fr = true;
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30 break;
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31 default:
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32 return -1;
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33 }
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34 buf += 34;
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35 }
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36 return 0;
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37 }
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38
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39 int read_binary_file(const char *filename, bool is_efr, uint8_t **bufret,
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40 unsigned *size_ret)
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41 {
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42 int fd, rc;
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43 struct stat st;
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44 uint8_t *buf;
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45 unsigned nframes;
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46 bool got_fr, got_efr;
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47
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48 fd = open(filename, O_RDONLY);
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49 if (fd < 0) {
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50 perror(filename);
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51 return -1;
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52 }
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53 fstat(fd, &st);
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54 if (!S_ISREG(st.st_mode)) {
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55 close(fd);
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56 fprintf(stderr, "error: %s is not a regular file\n", filename);
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57 return -1;
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58 }
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59 if (!st.st_size) {
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60 close(fd);
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61 fprintf(stderr, "error: %s is an empty file\n", filename);
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62 return -1;
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63 }
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64 if (st.st_size % 34) {
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65 close(fd);
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66 fprintf(stderr,
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67 "error: size of %s is not a multiple of 34 bytes\n",
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68 filename);
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69 return -1;
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70 }
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71 buf = malloc(st.st_size);
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72 if (!buf) {
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73 close(fd);
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74 fprintf(stderr, "unable to malloc buffer for %s\n", filename);
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75 return -1;
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76 }
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77 read(fd, buf, st.st_size);
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78 close(fd);
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79 nframes = st.st_size / 34;
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80
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81 got_fr = false;
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82 got_efr = false;
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83 rc = check_magic(buf, nframes, &got_fr, &got_efr);
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84 if (rc < 0 || got_fr && got_efr) {
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85 free(buf);
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86 fprintf(stderr, "error: %s is not a valid TRAU-UL test file\n",
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87 filename);
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88 return -1;
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89 }
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90 if (is_efr != got_efr) {
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91 free(buf);
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92 fprintf(stderr, "error: %s is for the wrong codec\n", filename);
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93 return -1;
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94 }
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95 *bufret = buf;
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96 *size_ret = nframes;
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97 return 0;
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98 }
51
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99
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100 static int check_magic_d144(const uint8_t *buf, unsigned nframes)
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101 {
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102 unsigned n;
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103
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104 for (n = 0; n < nframes; n++) {
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105 if (*buf != 0xD4)
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106 return -1;
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107 buf += 38;
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108 }
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109 return 0;
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110 }
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111
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112 int read_binary_file_d144(const char *filename, uint8_t **bufret,
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113 unsigned *size_ret)
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114 {
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115 int fd, rc;
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116 struct stat st;
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117 uint8_t *buf;
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118 unsigned nframes;
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119
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120 fd = open(filename, O_RDONLY);
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121 if (fd < 0) {
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122 perror(filename);
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123 return -1;
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124 }
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125 fstat(fd, &st);
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126 if (!S_ISREG(st.st_mode)) {
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127 close(fd);
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128 fprintf(stderr, "error: %s is not a regular file\n", filename);
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129 return -1;
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130 }
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131 if (!st.st_size) {
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132 close(fd);
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133 fprintf(stderr, "error: %s is an empty file\n", filename);
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134 return -1;
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135 }
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136 if (st.st_size % 38) {
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137 close(fd);
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138 fprintf(stderr,
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139 "error: size of %s is not a multiple of 38 bytes\n",
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140 filename);
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141 return -1;
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142 }
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143 buf = malloc(st.st_size);
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144 if (!buf) {
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145 close(fd);
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146 fprintf(stderr, "unable to malloc buffer for %s\n", filename);
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147 return -1;
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148 }
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149 read(fd, buf, st.st_size);
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150 close(fd);
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151 nframes = st.st_size / 38;
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152
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153 rc = check_magic_d144(buf, nframes);
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154 if (rc < 0) {
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155 free(buf);
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156 fprintf(stderr, "error: %s is not a valid D144 test file\n",
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157 filename);
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158 return -1;
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159 }
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160 *bufret = buf;
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161 *size_ret = nframes;
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162 return 0;
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163 }