FreeCalypso > hg > sms-coding-utils
view libcoding/gsmtime.c @ 27:7418ca2e9949
libcoding: add functions from freecalypso-tools/uptools/libcoding
that are needed for sms-pdu-decode & pcm-sms-decode
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 13 Jun 2024 02:29:29 +0000 |
parents | |
children |
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/* * This library module implements decoding of GSM timestamps. */ #include <sys/types.h> #include <stdio.h> gsm_timestamp_decode(inbuf, outbuf) u_char *inbuf; char *outbuf; { u_char rev[7]; int i, d1, d2, tzsign; for (i = 0; i < 7; i++) { d1 = inbuf[i] & 0xF; d2 = inbuf[i] >> 4; rev[i] = (d1 << 4) | d2; } if (rev[6] & 0x80) { rev[6] &= 0x7F; tzsign = '-'; } else tzsign = '+'; sprintf(outbuf, "%02X/%02X/%02X,%02X:%02X:%02X%c%02X", rev[0], rev[1], rev[2], rev[3], rev[4], rev[5], tzsign, rev[6]); }