FreeCalypso > hg > gsm-codec-lib
annotate dev/gsm0611-silence-fr.c @ 354:e4ce7972737f
libtwamr: add DHF tables
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 05 May 2024 21:34:23 +0000 |
parents | e4ca04586118 |
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libgsmfrp: starting with the silence frame
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1 /* |
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2 * This program is meant to be run only once by the developer - it uses |
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3 * libgsm function gsm_implode() to transform the idle frame of GSM 06.11 |
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4 * (3GPP TS 46.011) from the table format given in the spec into |
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5 * libgsm/RTP format. |
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6 * |
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7 * Later update: this program has been reworked to use the local function |
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8 * in pack_gsmfr_rtp.c instead of gsm_implode(), in order to eliminate |
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9 * all build dependencies on old libgsm. |
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10 */ |
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11 |
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12 #include <stdio.h> |
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13 #include <stdint.h> |
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14 #include <stdlib.h> |
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15 #include <string.h> |
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16 #include <strings.h> |
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17 |
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18 extern void gsmfr_pack_to_rtp(const int16_t *params, uint8_t *frame); |
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19 |
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20 static const int16_t lar_params[8] = {42, 39, 21, 10, 9, 4, 3, 2}; |
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21 static const int16_t subframe_params[17] = |
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GSM 06.11 silence frame: it's Nc=40 first, then bc=0
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22 {40, 0, 1, 0, 3, 4, 3, 4, 4, 3, 3, 3, 3, 4, 4, 3, 3}; |
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23 |
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24 main(argc, argv) |
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25 char **argv; |
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26 { |
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27 int16_t params[76]; |
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28 uint8_t frame[33]; |
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29 unsigned n; |
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30 |
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31 /* gather params */ |
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32 bcopy(lar_params, params, sizeof(int16_t) * 8); |
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33 bcopy(subframe_params, params + 8, sizeof(int16_t) * 17); |
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34 bcopy(subframe_params, params + 25, sizeof(int16_t) * 17); |
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35 bcopy(subframe_params, params + 42, sizeof(int16_t) * 17); |
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36 bcopy(subframe_params, params + 59, sizeof(int16_t) * 17); |
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37 /* generate frame */ |
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38 gsmfr_pack_to_rtp(params, frame); |
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39 /* print the frame */ |
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40 for (n = 0; n < 33; n++) { |
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41 printf("0x%02X,", frame[n]); |
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42 if (n == 4 || n == 11 || n == 18 || n == 25 || n == 32) |
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43 putchar('\n'); |
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44 else |
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45 putchar(' '); |
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46 } |
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47 exit(0); |
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48 } |