FreeCalypso > hg > freecalypso-tools

annotate uptools/libcoding/grokdcs.c @ 416:30f6d1c32c6f

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doc/Flash-boot-defect article removed (no longer relevant) This article is no longer relevant because the issue in question only affected one (1) defective FCDEV3B board which was not and never will be sold.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 26 Oct 2018 07:11:08 +0000
parents 097ce8431d11
children
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097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
Mychaela Falconia <falcon@freecalypso.org>
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1 /*
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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2 * This library module implements the function that distills the complex
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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3 * set of possible SMS DCS octet values to just one of 4 possibilities:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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4 * 7-bit text (7), 8-bit data octets (8), UCS-2 text (16) or compressed
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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5 * data (9).
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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6 *
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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7 * The decoding is based on the 3GPP TS 23.038 V11.0.0 spec;
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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8 * reserved encodings are treated as 7-bit text as the spec instructs.
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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9 */
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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10
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11 sms_dcs_classify(dcs)
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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12 {
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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13 if (!(dcs & 0x80)) {
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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14 if (dcs & 0x20)
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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15 return(9);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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16 switch (dcs & 0xC) {
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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17 case 0:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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18 return(7);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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19 case 4:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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20 return(8);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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21 case 8:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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22 return(16);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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23 default:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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24 /* reserved, treating as 7-bit per the spec */
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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25 return(7);
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26 }
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27 }
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28 switch (dcs & 0xF0) {
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29 case 0x80:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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30 case 0x90:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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31 case 0xA0:
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32 case 0xB0:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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33 /* reserved, treating as 7-bit per the spec */
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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34 return(7);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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35 case 0xC0:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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36 case 0xD0:
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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37 return(7);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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38 case 0xE0:
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39 return(16);
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40 case 0xF0:
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41 if (dcs & 4)
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42 return(8);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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43 else
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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44 return(7);
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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45 }
097ce8431d11 uptools/libcoding: SMS DCS decoding implemented
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46 }