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comparison libgsmhr1/paramval_cod.c @ 513:03a40ac2e931

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libgsmhr1: implement validation for *.cod frames
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 25 Aug 2024 19:00:03 +0000
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512:4f0ab833bec0 513:03a40ac2e931
1 /*
2 * The function implemented in this module examines a frame of 20 int16_t words
3 * that corresponds to GSM-HR encoder output format, and checks if the unused
4 * upper bits of each int16_t word are cleared as they should be.
5 * This function should be used when reading from ETSI-format *.cod files,
6 * to guard against reading garbage or wrong endian.
7 */
8
9 #include <stdint.h>
10 #include "tw_gsmhr.h"
11
12 int gsmhr_check_encoder_params(const int16_t *params)
13 {
14 if (params[18] & 0xFFFE)
15 return -1;
16 if (params[19] & 0xFFFE)
17 return -1;
18 return gsmhr_check_common_params(params);
19 }