FreeCalypso > hg > themwi-system-sw

annotate libutil/dtmf_valid.c @ 160:4b35a5a400f1

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mgw/dtmf_defs.h: reduce DTMF_MIN_FRAMES to 5 (100 ms)
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 12 Oct 2022 13:05:26 -0800
parents 64b9f0f90726
children
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64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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2 * Here we implement a function that validates DTMF digits which arrive
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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3 * from GSM MS via MNCC_START_DTMF_IND.
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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4 */
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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5
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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6 is_valid_dtmf_digit(c)
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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7 {
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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8 switch (c) {
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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9 case '0':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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10 case '1':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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11 case '2':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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12 case '3':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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13 case '4':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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14 case '5':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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15 case '6':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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16 case '7':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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17 case '8':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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18 case '9':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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19 case '*':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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20 case '#':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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21 case 'A':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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22 case 'B':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
Mychaela Falconia <falcon@freecalypso.org>
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23 case 'C':
64b9f0f90726 themwi-test-mtc: handle DTMF from MS
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24 case 'D':
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Mychaela Falconia <falcon@freecalypso.org>
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25 return(1);
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26 default:
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Mychaela Falconia <falcon@freecalypso.org>
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27 return(0);
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28 }
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29 }