FreeCalypso > hg > gsm-codec-lib
annotate efrtest/etsi-enc.c @ 173:aaa0380f9958
doc/RTP-analysis: document new tools
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Tue, 27 Dec 2022 00:00:57 +0000 |
parents | a13b1605142b |
children | d4f47d0962e7 |
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1 /* |
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2 * gsmefr-etsi-enc is a test program for our EFR encoder: it reads raw |
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3 * 16-bit PCM (matching ETSI's *.inp) as input and writes ETSI's *.cod |
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4 * format as output, allowing our decoder to be tested with ETSI's |
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5 * official test sequences. |
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6 * |
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7 * ETSI input and output files are read and written in LE byte order, |
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8 * matching the official test sequences in ts_100725v050200p0.zip. |
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9 */ |
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10 |
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11 #include <stdio.h> |
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12 #include <stdint.h> |
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13 #include <stdlib.h> |
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14 #include <string.h> |
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15 #include <strings.h> |
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16 #include <unistd.h> |
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17 #include "../libgsmefr/gsm_efr.h" |
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18 |
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19 static int |
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20 read_input(inf, pcm, filename_for_errs, big_endian) |
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21 FILE *inf; |
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22 int16_t *pcm; |
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23 char *filename_for_errs; |
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24 { |
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25 uint8_t file_bytes[320], *sp; |
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26 int cc; |
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27 unsigned n; |
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28 |
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29 cc = fread(file_bytes, 2, 160, inf); |
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30 if (cc == 0) |
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31 return 0; |
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32 if (cc != 160) { |
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33 fprintf(stderr, "error: short read from %s\n", |
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34 filename_for_errs); |
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35 exit(1); |
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36 } |
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37 sp = file_bytes; |
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38 for (n = 0; n < 160; n++) { |
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39 if (big_endian) |
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40 pcm[n] = (sp[0] << 8) | sp[1]; |
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41 else |
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42 pcm[n] = sp[0] | (sp[1] << 8); |
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43 sp += 2; |
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44 } |
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45 return 1; |
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46 } |
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47 |
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48 static void |
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49 frame2bits(frame, bits) |
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50 uint8_t *frame, *bits; |
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51 { |
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52 unsigned nb, byte, mask, bit; |
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53 |
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54 for (nb = 0; nb < EFR_RTP_FRAME_LEN; nb++) { |
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55 byte = *frame++; |
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56 for (mask = 0x80; mask; mask >>= 1) { |
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57 if (byte & mask) |
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58 bit = 1; |
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59 else |
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60 bit = 0; |
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61 *bits++ = bit; |
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62 } |
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63 } |
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64 } |
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65 |
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66 static void |
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67 emit_output(outf, bits, nbits, big_endian) |
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68 FILE *outf; |
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69 uint8_t *bits; |
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70 unsigned nbits; |
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71 { |
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72 unsigned n; |
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73 |
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74 for (n = 0; n < nbits; n++) { |
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75 if (big_endian) { |
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76 putc(0, outf); |
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77 putc(bits[n], outf); |
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78 } else { |
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79 putc(bits[n], outf); |
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80 putc(0, outf); |
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81 } |
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82 } |
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83 } |
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84 |
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85 main(argc, argv) |
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86 char **argv; |
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87 { |
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88 char *infname, *outfname; |
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89 FILE *inf, *outf; |
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90 struct EFR_encoder_state *state; |
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91 int16_t pcm[160]; |
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92 uint8_t frame[EFR_RTP_FRAME_LEN], bits[250]; |
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93 int opt, dtx = 0, rc, sp, vad, big_endian = 0; |
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94 extern int optind; |
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95 |
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96 while ((opt = getopt(argc, argv, "bd")) != EOF) { |
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97 switch (opt) { |
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98 case 'b': |
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99 big_endian = 1; |
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100 continue; |
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101 case 'd': |
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102 dtx = 1; |
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103 continue; |
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104 default: |
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105 usage: |
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106 fprintf(stderr, |
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107 "usage: %s [-b] [-d] input.inp output.cod\n", |
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108 argv[0]); |
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109 exit(1); |
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110 } |
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111 } |
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112 if (argc != optind + 2) |
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113 goto usage; |
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114 infname = argv[optind]; |
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115 outfname = argv[optind+1]; |
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116 |
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117 inf = fopen(infname, "r"); |
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118 if (!inf) { |
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119 perror(infname); |
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120 exit(1); |
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121 } |
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122 outf = fopen(outfname, "w"); |
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123 if (!outf) { |
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124 perror(outfname); |
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125 exit(1); |
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126 } |
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127 state = EFR_encoder_create(dtx); |
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128 if (!state) { |
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129 perror("EFR_encoder_create()"); |
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130 exit(1); |
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131 } |
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132 for (;;) { |
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133 rc = read_input(inf, pcm, infname, big_endian); |
114
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134 if (!rc) |
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135 break; |
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136 EFR_encode_frame(state, pcm, frame, &sp, &vad); |
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137 frame2bits(frame, bits); |
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138 bits[248] = vad; |
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139 bits[249] = sp; |
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140 emit_output(outf, bits + 4, 246, big_endian); |
114
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141 } |
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142 fclose(outf); |
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143 exit(0); |
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144 } |