FreeCalypso > hg > gsm-codec-lib
view dev/gsm0611-silence-fr.c @ 128:a5ffec18e4cd
test programs: use printf %d format for codec parameters
Even though all codec params (both FR and EFR) are small unsigned integers,
we use signed int16_t data type for both, for interface reasons: in the
case of FR it's the gsm_signal type of libgsm, and in the case of EFR
it's the Word16 type of ETSI codec guts. Therefore, the correct printf
format is %d, not %u, when the objective is to see what's in the variables
(what the compiler sees) and catch any bugs.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sun, 11 Dec 2022 04:00:13 +0000 |
parents | 61cb83bd11ec |
children | e4ca04586118 |
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/* * This program is meant to be run only once by the developer - it uses * libgsm function gsm_implode() to transform the idle frame of GSM 06.11 * (3GPP TS 46.011) from the table format given in the spec into * libgsm/RTP format. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <gsm.h> static const gsm_signal lar_params[8] = {42, 39, 21, 10, 9, 4, 3, 2}; static const gsm_signal subframe_params[17] = {40, 0, 1, 0, 3, 4, 3, 4, 4, 3, 3, 3, 3, 4, 4, 3, 3}; main(argc, argv) char **argv; { gsm state; gsm_signal params[76]; gsm_byte frame[33]; unsigned n; /* gsm_implode() requires dummy state */ state = gsm_create(); if (!state) { fprintf(stderr, "gsm_create() failed!\n"); exit(1); } /* gather params */ bcopy(lar_params, params, sizeof(gsm_signal) * 8); bcopy(subframe_params, params + 8, sizeof(gsm_signal) * 17); bcopy(subframe_params, params + 25, sizeof(gsm_signal) * 17); bcopy(subframe_params, params + 42, sizeof(gsm_signal) * 17); bcopy(subframe_params, params + 59, sizeof(gsm_signal) * 17); /* generate frame */ gsm_implode(state, params, frame); /* print the frame */ for (n = 0; n < 33; n++) { printf("0x%02X,", frame[n]); if (n == 4 || n == 11 || n == 18 || n == 25 || n == 32) putchar('\n'); else putchar(' '); } exit(0); }