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comparison ccd/tdd_ci.c @ 0:75a11d740a02

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initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 09 Jun 2016 00:02:41 +0000
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-1:000000000000 0:75a11d740a02
1 /*
2 +-----------------------------------------------------------------------------
3 | Project : CCD
4 | Modul : tdd_ci.c
5 +-----------------------------------------------------------------------------
6 | Copyright 2004 Texas Instruments Deutschland GmbH
7 | All rights reserved.
8 |
9 | This file is confidential and a trade secret of Texas
10 | Instruments Deutschland GmbH
11 | The receipt of or possession of this file does not convey
12 | any rights to reproduce or disclose its contents or to
13 | manufacture, use, or sell anything it may describe, in
14 | whole, or in part, without the specific written consent of
15 | Texas Instruments Deutschland GmbH.
16 +-----------------------------------------------------------------------------
17 | Purpose : Definition of encoding and decoding functions for TDD_CI type
18 +-----------------------------------------------------------------------------
19 */
20
21
22 /*
23 * standard definitions like GLOBAL, UCHAR, ERROR etc.
24 */
25 #include "typedefs.h"
26 #include "header.h"
27
28 /*
29 * Types and functions for bit access and manipulation
30 */
31 #include "ccd_globs.h"
32
33 /*
34 * Prototypes of ccd internal functions
35 */
36 #include "ccd.h"
37 #include "bitfun.h"
38
39 /*
40 * Declaration of coder/decoder tables
41 */
42 #include "ccdtable.h"
43 /*
44 * Function prototypes of CCD-CCDDATA interface
45 */
46 #include "ccddata.h"
47
48
49 #if !(defined (CCD_TEST))
50 #include "vsi.h"
51 #endif
52
53 #ifndef RUN_INT_RAM
54 /* Attention: static data, only used in cdc_tdd_ci_decode */
55 static const U8 params_bSize[21] =
56 {
57 0,
58 9,
59 17, 25,
60 32, 39, 46, 53,
61 59, 65, 71, 77, 83, 89, 95, 101,
62 106, 111, 116, 121, 126
63 };
64 /*
65 +--------------------------------------------------------------------+
66 | PROJECT : CCD MODULE : cdc_tdd_ci_decode |
67 +--------------------------------------------------------------------+
68
69 PURPOSE : Decoding of the TDD_CELL_INFORMATION Field reusing
70 RANGE 511 format of frequency lists (with w0=0.).
71 This field allows to compute a set of 9-bit-long
72 TDD_CELL_INFORMATION aprameters.
73 The IE is preceded by TDD_Indic0(1 bit) and made of the
74 following two IEs:
75 1) NR_OF_TDD_CELLS(5 bit field),
76 2) TDD_CELL_INFORMATION information parameters
77
78 TDD_Indic0 indicates if the parameter value '0000000000'
79 is a member of the set.
80 The total number of bits q of this field depends on the
81 value of the parameter NR_OF_TDD_CELLS = m
82 as follows (with q=0 if m=0):
83 m q m q m q m q m q
84 0 0 5 39 10 71 15 101 20 126
85 1 9 6 46 11 77 16 106 21-31 0
86 2 17 7 53 12 83 17 111
87 3 25 8 59 13 89 18 116
88 4 32 9 65 14 95 19 121
89
90 The message is sent from net to MS and a MS supporting
91 enhanced measurements has to understand it.
92
93 The space this IE takes in the C-structure is made of a
94 counter for the number of decoded parameter and an array
95 of them.
96 */
97
98 SHORT cdc_tdd_ci_decode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
99 {
100 U8 ListSize = 0;
101 U16 ListBitLen = 0;
102 ULONG cix_ref, num_prolog_steps, prolog_step_ref;
103 short *w;
104
105 #ifdef DEBUG_CCD
106 TRACE_CCD (globs, "cdc_tdd_ci_decode()");
107 #ifdef CCD_SYMBOLS
108 TRACE_CCD (globs, "decoding list %s with range 512 format",
109 ccddata_get_alias((USHORT) e_ref, 1));
110 #else
111 TRACE_CCD (globs, "decoding list %d of range 512 format", melem[e_ref].elemRef);
112 #endif
113 #endif
114
115 globs->SeekTLVExt = FALSE;
116 cix_ref = melem[e_ref].calcIdxRef;
117 num_prolog_steps = calcidx[cix_ref].numPrologSteps;
118 prolog_step_ref = calcidx[cix_ref].prologStepRef;
119
120 /*
121 * if this element have a defined Prolog
122 * we have to process it before decoding the bitstream
123 */
124 if (num_prolog_steps)
125 {
126 ccd_performOperations (num_prolog_steps, prolog_step_ref, globs);
127 }
128
129 /*
130 * First read NR_OF_TDD_CELLS (5 bits).
131 */
132 globs->pstructOffs = melem[e_ref].structOffs;;
133 bf_readBits (5, globs);
134 ListSize = globs->pstruct[globs->pstructOffs++];
135
136 /* If n=0 there is nothing to do for this IE. */
137 if (!ListSize)
138 {
139 return 1;
140 }
141
142 /* Read the corresponding bit number or suppose the maximum length. */
143 if (ListSize <= 20)
144 {
145 ListBitLen = params_bSize [ListSize];
146 }
147 else
148 {
149 /* If n>20 there is nothing to do for this IE. */
150 return 1;
151 }
152 /*
153 * Bit size for params is bigger than the size of unread bits in the
154 * message buffer. Danger: buffer overwriting!
155 */
156 if ( ListBitLen > globs->maxBitpos - globs->bitpos)
157 {
158 ccd_recordFault (globs, ERR_ELEM_LEN, BREAK, (USHORT) e_ref,
159 globs->pstruct + globs->pstructOffs);
160 ListBitLen = (U16)(globs->maxBitpos - globs->bitpos);
161 }
162 /*
163 * Use dynamic memory for calculation instead of global memory or stack.
164 */
165 MALLOC (w, 257 * sizeof (U16));
166
167
168 /*
169 * Decode the W-parameter.
170 * As a rule for this type w(0) must be 0.
171 */
172 w[0] = 0;
173 cdc_decode_param (param_512+1, &w[1], ListBitLen, globs);
174
175 /*
176 * Decode and set the remaining channel number according the
177 * algorithm described in GSM 4.08.
178 */
179 cdc_decode_frequencies (511, &w[1], 0, TDD_CI_LIST, globs);
180
181 /* Free the dynamic allocated memory. */
182 MFREE (w);
183
184 return 1;
185 }
186 #endif /* !RUN_INT_RAM */
187
188 #ifndef RUN_INT_RAM
189 /*
190 +--------------------------------------------------------------------+
191 | PROJECT : CCD MODULE : cdc_tdd_ci_encode |
192 +--------------------------------------------------------------------+
193
194 PURPOSE : Encoding function is not needed, since this message is
195 sent from net to MS.
196 It could be only useful for testing procedure if there
197 were an encoder function at this place.
198 This will be a future work.
199
200 */
201
202 SHORT cdc_tdd_ci_encode (const ULONG c_ref, const ULONG e_ref, T_CCD_Globs *globs)
203 {
204
205 #ifdef DEBUG_CCD
206 TRACE_CCD (globs, "cdc_tdd_ci_encode()");
207 #endif
208 #ifdef TARGET_WIN32
209 /* TBD */
210 #endif
211 return 1;
212 }
213 #endif /* !RUN_INT_RAM */