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- /*
- * Copyright 1992 by Jutta Degener and Carsten Bormann, Technische
- * Universitaet Berlin. See the accompanying file "COPYRIGHT" for
- * details. THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
- */
-
- /* $Header: /home/kbs/jutta/src/gsm/gsm-1.0/src/RCS/gsm_explode.c,v 1.1 1992/10/28 00:15:50 jutta Exp $ */
-
- #include "private.h"
- #include "gsm.h"
- #include "proto.h"
-
- int gsm_explode P3((s, c, target), gsm s, gsm_byte * c, gsm_signal * target)
- {
- /* GSM_MAGIC = (*c >> 4) & 0xF; */
-
- if (((*c >> 4) & 0x0F) != GSM_MAGIC) return -1;
-
- #define LARc target
-
- LARc[0] = (*c++ & 0xF) << 2; /* 1 */
- LARc[0] |= (*c >> 6) & 0x3;
- LARc[1] = *c++ & 0x3F;
- LARc[2] = (*c >> 3) & 0x1F;
- LARc[3] = (*c++ & 0x7) << 2;
- LARc[3] |= (*c >> 6) & 0x3;
- LARc[4] = (*c >> 2) & 0xF;
- LARc[5] = (*c++ & 0x3) << 2;
- LARc[5] |= (*c >> 6) & 0x3;
- LARc[6] = (*c >> 3) & 0x7;
- LARc[7] = *c++ & 0x7;
-
- #define Nc (target + 8)
-
- Nc[0] = (*c >> 1) & 0x7F;
-
- #define bc (target + 9)
-
- bc[0] = (*c++ & 0x1) << 1;
- bc[0] |= (*c >> 7) & 0x1;
-
- #define Mc (target + 10)
-
- Mc[0] = (*c >> 5) & 0x3;
-
- #define xmaxc (target + 11)
-
- xmaxc[0] = (*c++ & 0x1F) << 1;
- xmaxc[0] |= (*c >> 7) & 0x1;
-
- #define xmc (target + 12)
-
- xmc[0] = (*c >> 4) & 0x7;
- xmc[1] = (*c >> 1) & 0x7;
- xmc[2] = (*c++ & 0x1) << 2;
- xmc[2] |= (*c >> 6) & 0x3;
- xmc[3] = (*c >> 3) & 0x7;
- xmc[4] = *c++ & 0x7;
- xmc[5] = (*c >> 5) & 0x7;
- xmc[6] = (*c >> 2) & 0x7;
- xmc[7] = (*c++ & 0x3) << 1; /* 10 */
- xmc[7] |= (*c >> 7) & 0x1;
- xmc[8] = (*c >> 4) & 0x7;
- xmc[9] = (*c >> 1) & 0x7;
- xmc[10] = (*c++ & 0x1) << 2;
- xmc[10] |= (*c >> 6) & 0x3;
- xmc[11] = (*c >> 3) & 0x7;
- xmc[12] = *c++ & 0x7;
-
- #undef Nc
- #define Nc (target + 25 - 1)
-
- Nc[1] = (*c >> 1) & 0x7F;
-
- #undef bc
- #define bc (target + 26 - 1)
-
- bc[1] = (*c++ & 0x1) << 1;
- bc[1] |= (*c >> 7) & 0x1;
-
- #undef Mc
- #define Mc (target + 27 - 1)
-
- Mc[1] = (*c >> 5) & 0x3;
-
- #undef xmaxc
- #define xmaxc (target + 28 - 1)
-
- xmaxc[1] = (*c++ & 0x1F) << 1;
- xmaxc[1] |= (*c >> 7) & 0x1;
-
- #undef xmc
- #define xmc (target + 29 - 13)
-
- xmc[13] = (*c >> 4) & 0x7;
- xmc[14] = (*c >> 1) & 0x7;
- xmc[15] = (*c++ & 0x1) << 2;
- xmc[15] |= (*c >> 6) & 0x3;
- xmc[16] = (*c >> 3) & 0x7;
- xmc[17] = *c++ & 0x7;
- xmc[18] = (*c >> 5) & 0x7;
- xmc[19] = (*c >> 2) & 0x7;
- xmc[20] = (*c++ & 0x3) << 1;
- xmc[20] |= (*c >> 7) & 0x1;
- xmc[21] = (*c >> 4) & 0x7;
- xmc[22] = (*c >> 1) & 0x7;
- xmc[23] = (*c++ & 0x1) << 2;
- xmc[23] |= (*c >> 6) & 0x3;
- xmc[24] = (*c >> 3) & 0x7;
- xmc[25] = *c++ & 0x7;
-
- #undef Nc
- #define Nc (target + 42 - 2)
-
- Nc[2] = (*c >> 1) & 0x7F;
-
- #undef bc
- #define bc (target + 43 - 2)
-
- bc[2] = (*c++ & 0x1) << 1; /* 20 */
- bc[2] |= (*c >> 7) & 0x1;
-
- #undef Mc
- #define Mc (target + 44 - 2)
-
- Mc[2] = (*c >> 5) & 0x3;
-
- #undef xmaxc
- #define xmaxc (target + 45 - 2)
-
- xmaxc[2] = (*c++ & 0x1F) << 1;
- xmaxc[2] |= (*c >> 7) & 0x1;
-
- #undef xmc
- #define xmc (target + 46 - 26)
-
- xmc[26] = (*c >> 4) & 0x7;
- xmc[27] = (*c >> 1) & 0x7;
- xmc[28] = (*c++ & 0x1) << 2;
- xmc[28] |= (*c >> 6) & 0x3;
- xmc[29] = (*c >> 3) & 0x7;
- xmc[30] = *c++ & 0x7;
- xmc[31] = (*c >> 5) & 0x7;
- xmc[32] = (*c >> 2) & 0x7;
- xmc[33] = (*c++ & 0x3) << 1;
- xmc[33] |= (*c >> 7) & 0x1;
- xmc[34] = (*c >> 4) & 0x7;
- xmc[35] = (*c >> 1) & 0x7;
- xmc[36] = (*c++ & 0x1) << 2;
- xmc[36] |= (*c >> 6) & 0x3;
- xmc[37] = (*c >> 3) & 0x7;
- xmc[38] = *c++ & 0x7;
-
- #undef Nc
- #define Nc (target + 59 - 3)
-
- Nc[3] = (*c >> 1) & 0x7F;
-
- #undef bc
- #define bc (target + 60 - 3)
-
- bc[3] = (*c++ & 0x1) << 1;
- bc[3] |= (*c >> 7) & 0x1;
-
- #undef Mc
- #define Mc (target + 61 - 3)
-
- Mc[3] = (*c >> 5) & 0x3;
-
- #undef xmaxc
- #define xmaxc (target + 62 - 3)
-
- xmaxc[3] = (*c++ & 0x1F) << 1;
- xmaxc[3] |= (*c >> 7) & 0x1;
-
- #undef xmc
- #define xmc (target + 63 - 39)
-
- xmc[39] = (*c >> 4) & 0x7;
- xmc[40] = (*c >> 1) & 0x7;
- xmc[41] = (*c++ & 0x1) << 2;
- xmc[41] |= (*c >> 6) & 0x3;
- xmc[42] = (*c >> 3) & 0x7;
- xmc[43] = *c++ & 0x7; /* 30 */
- xmc[44] = (*c >> 5) & 0x7;
- xmc[45] = (*c >> 2) & 0x7;
- xmc[46] = (*c++ & 0x3) << 1;
- xmc[46] |= (*c >> 7) & 0x1;
- xmc[47] = (*c >> 4) & 0x7;
- xmc[48] = (*c >> 1) & 0x7;
- xmc[49] = (*c++ & 0x1) << 2;
- xmc[49] |= (*c >> 6) & 0x3;
- xmc[50] = (*c >> 3) & 0x7;
- xmc[51] = *c & 0x7; /* 33 */
-
- return 0;
- }
-