Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1 | /* csn1.cpp |
| 2 | * Routines for CSN1 dissection in wireshark. |
| 3 | * |
| 4 | * Copyright (C) 2011 Ivan Klyuchnikov |
| 5 | * |
| 6 | * By Vincent Helfre, based on original code by Jari Sassi |
| 7 | * with the gracious authorization of STE |
| 8 | * Copyright (c) 2011 ST-Ericsson |
| 9 | * |
| 10 | * $Id: packet-csn1.c 39140 2011-09-25 22:01:50Z wmeier $ |
| 11 | * |
| 12 | * Wireshark - Network traffic analyzer |
| 13 | * By Gerald Combs <gerald@wireshark.org> |
| 14 | * Copyright 1998 Gerald Combs |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or |
| 17 | * modify it under the terms of the GNU General Public License |
| 18 | * as published by the Free Software Foundation; either version 2 |
| 19 | * of the License, or (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 29 | */ |
| 30 | |
| 31 | #include <iostream> |
| 32 | #include <cstdlib> |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 33 | #include <assert.h> |
| 34 | #include <string.h> |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 35 | #include "csn1.h" |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 36 | #include <gprs_debug.h> |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 37 | |
| 38 | |
| 39 | #define pvDATA(_pv, _offset) ((void*) ((unsigned char*)_pv + _offset)) |
| 40 | #define pui8DATA(_pv, _offset) ((guint8*) pvDATA(_pv, _offset)) |
| 41 | #define pui16DATA(_pv, _offset) ((guint16*) pvDATA(_pv, _offset)) |
| 42 | #define pui32DATA(_pv, _offset) ((guint32*) pvDATA(_pv, _offset)) |
| 43 | #define pui64DATA(_pv, _offset) ((guint64*) pvDATA(_pv, _offset)) |
| 44 | /* used to tag existence of next element in variable length lists */ |
| 45 | #define STANDARD_TAG 1 |
| 46 | #define REVERSED_TAG 0 |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 47 | |
| 48 | using namespace std; |
| 49 | static const unsigned char ixBitsTab[] = {0, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5}; |
| 50 | |
| 51 | |
| 52 | /* Returns no_of_bits (up to 8) masked with 0x2B */ |
| 53 | |
| 54 | static guint8 |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 55 | get_masked_bits8( bitvec *vector, unsigned& readIndex, gint bit_offset, const gint no_of_bits) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 56 | { |
| 57 | static const guint8 maskBits[] = {0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF}; |
| 58 | //gint byte_offset = bit_offset >> 3; /* divide by 8 */ |
| 59 | gint relative_bit_offset = bit_offset & 0x07; /* modulo 8 */ |
| 60 | guint8 result; |
| 61 | gint bit_shift = 8 - relative_bit_offset - (gint) no_of_bits; |
| 62 | readIndex -= relative_bit_offset; |
| 63 | if (bit_shift >= 0) |
| 64 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 65 | result = (0x2B ^ ((guint8)bitvec_read_field(vector, readIndex, 8))) >> bit_shift; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 66 | readIndex-= bit_shift; |
| 67 | result &= maskBits[no_of_bits]; |
| 68 | } |
| 69 | else |
| 70 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 71 | guint8 hight_part = (0x2B ^ ((guint8)bitvec_read_field(vector, readIndex, 8))) & maskBits[8 - relative_bit_offset]; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 72 | hight_part = (guint8) (hight_part << (-bit_shift)); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 73 | result = (0x2B ^ ((guint8)bitvec_read_field(vector, readIndex, 8))) >> (8 + bit_shift); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 74 | readIndex = readIndex - (8 - (-bit_shift)); |
| 75 | result |= hight_part; |
| 76 | } |
| 77 | return result; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * ================================================================================================ |
| 82 | * set initial/start values in help data structure used for packing/unpacking operation |
| 83 | * ================================================================================================ |
| 84 | */ |
| 85 | void |
| 86 | csnStreamInit(csnStream_t* ar, gint bit_offset, gint remaining_bits_len) |
| 87 | { |
| 88 | ar->remaining_bits_len = remaining_bits_len; |
| 89 | ar->bit_offset = bit_offset; |
| 90 | } |
| 91 | |
| 92 | static const char* ErrCodes[] = |
| 93 | { |
| 94 | "General 0", |
| 95 | "General -1", |
| 96 | "DATA_NOT VALID", |
| 97 | "IN SCRIPT", |
| 98 | "INVALID UNION INDEX", |
| 99 | "NEED_MORE BITS TO UNPACK", |
| 100 | "ILLEGAL BIT VALUE", |
| 101 | "Internal", |
| 102 | "STREAM_NOT_SUPPORTED", |
| 103 | "MESSAGE_TOO_LONG" |
| 104 | }; |
| 105 | |
| 106 | static gint16 |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 107 | ProcessError( unsigned readIndex, const char* sz, gint16 err, const CSN_DESCR* pDescr) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 108 | { |
| 109 | gint16 i = MIN(-err, ((gint16) ElementsOf(ErrCodes)-1)); |
| 110 | if (i >= 0) |
| 111 | { |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 112 | //LOG(ERR) << sz << "Error code: "<< ErrCodes[i] << pDescr?(pDescr->sz):"-"; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 113 | } |
| 114 | else |
| 115 | { |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 116 | //LOG(ERR) << sz << ": " << pDescr?(pDescr->sz):"-"; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 117 | } |
| 118 | return err; |
| 119 | } |
| 120 | |
| 121 | //#if 0 |
| 122 | static const char* CSN_DESCR_type[]= |
| 123 | { |
| 124 | "CSN_END", |
| 125 | "CSN_BIT", |
| 126 | "CSN_UINT", |
| 127 | "CSN_TYPE", |
| 128 | "CSN_CHOICE", |
| 129 | "CSN_UNION", |
| 130 | "CSN_UNION_LH", |
| 131 | "CSN_UINT_ARRAY", |
| 132 | "CSN_TYPE_ARRAY", |
| 133 | "CSN_BITMAP", |
| 134 | "CSN_VARIABLE_BITMAP", |
| 135 | "CSN_VARIABLE_BITMAP_1", |
| 136 | "CSN_LEFT_ALIGNED_VAR_BMP", |
| 137 | "CSN_LEFT_ALIGNED_VAR_BMP_1", |
| 138 | "CSN_VARIABLE_ARRAY", |
| 139 | "CSN_VARIABLE_TARRAY", |
| 140 | "CSN_VARIABLE_TARRAY_OFFSET", |
| 141 | "CSN_RECURSIVE_ARRAY", |
| 142 | "CSN_RECURSIVE_TARRAY", |
| 143 | "CSN_RECURSIVE_TARRAY_1", |
| 144 | "CSN_RECURSIVE_TARRAY_2", |
| 145 | "CSN_EXIST", |
| 146 | "CSN_EXIST_LH", |
| 147 | "CSN_NEXT_EXIST", |
| 148 | "CSN_NEXT_EXIST_LH", |
| 149 | "CSN_NULL", |
| 150 | "CSN_FIXED", |
| 151 | "CSN_CALLBACK", |
| 152 | "CSN_UINT_OFFSET", |
| 153 | "CSN_UINT_LH", |
| 154 | "CSN_SERIALIZE", |
| 155 | "CSN_TRAP_ERROR" |
| 156 | "CSN_???" |
| 157 | }; |
| 158 | //#endif |
| 159 | |
| 160 | /** |
| 161 | * ================================================================================================ |
| 162 | * Return TRUE if tag in bit stream indicates existence of next list element, |
| 163 | * otherwise return FALSE. |
| 164 | * Will work for tag values equal to both 0 and 1. |
| 165 | * ================================================================================================ |
| 166 | */ |
| 167 | |
| 168 | static gboolean |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 169 | existNextElement(bitvec *vector, unsigned& readIndex, guint8 Tag) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 170 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 171 | guint8 res = bitvec_read_field(vector, readIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 172 | if (Tag == STANDARD_TAG) |
| 173 | { |
| 174 | return (res > 0); |
| 175 | } |
| 176 | return (res == 0); |
| 177 | } |
| 178 | |
| 179 | |
| 180 | gint16 |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 181 | csnStreamDecoder(csnStream_t* ar, const CSN_DESCR* pDescr, bitvec *vector, unsigned& readIndex, void* data) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 182 | { |
| 183 | gint remaining_bits_len = ar->remaining_bits_len; |
| 184 | gint bit_offset = ar->bit_offset; |
| 185 | guint8* pui8; |
| 186 | guint16* pui16; |
| 187 | guint32* pui32; |
| 188 | guint64* pui64; |
| 189 | guint8 Tag = STANDARD_TAG; |
| 190 | |
| 191 | if (remaining_bits_len <= 0) |
| 192 | { |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | do |
| 197 | { |
| 198 | switch (pDescr->type) |
| 199 | { |
| 200 | case CSN_BIT: |
| 201 | { |
| 202 | if (remaining_bits_len > 0) |
| 203 | { |
| 204 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 205 | *pui8 = bitvec_read_field(vector, readIndex, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 206 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 207 | /* end add the bit value to protocol tree */ |
| 208 | } |
| 209 | else |
| 210 | { |
| 211 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 212 | } |
| 213 | |
| 214 | pDescr++; |
| 215 | remaining_bits_len--; |
| 216 | bit_offset++; |
| 217 | break; |
| 218 | } |
| 219 | |
| 220 | case CSN_NULL: |
| 221 | { /* Empty member! */ |
| 222 | pDescr++; |
| 223 | break; |
| 224 | } |
| 225 | |
| 226 | case CSN_UINT: |
| 227 | { |
| 228 | guint8 no_of_bits = (guint8) pDescr->i; |
| 229 | |
| 230 | if (remaining_bits_len >= no_of_bits) |
| 231 | { |
| 232 | if (no_of_bits <= 8) |
| 233 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 234 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 235 | pui8 = pui8DATA(data, pDescr->offset); |
| 236 | *pui8 = ui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 237 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 238 | } |
| 239 | else if (no_of_bits <= 16) |
| 240 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 241 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 242 | pui16 = pui16DATA(data, pDescr->offset); |
| 243 | *pui16 = ui16; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 244 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 245 | } |
| 246 | else if (no_of_bits <= 32) |
| 247 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 248 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 249 | pui32 = pui32DATA(data, pDescr->offset); |
| 250 | *pui32 = ui32; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 251 | LOGPC(DCSN1, LOGL_NOTICE, "%s = 0x%08x | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 252 | } |
| 253 | else |
| 254 | { |
| 255 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 256 | } |
| 257 | } |
| 258 | else |
| 259 | { |
| 260 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 261 | } |
| 262 | |
| 263 | remaining_bits_len -= no_of_bits; |
| 264 | bit_offset += no_of_bits; |
| 265 | pDescr++; |
| 266 | break; |
| 267 | } |
| 268 | |
| 269 | case CSN_UINT_OFFSET: |
| 270 | { |
| 271 | guint8 no_of_bits = (guint8) pDescr->i; |
| 272 | |
| 273 | if (remaining_bits_len >= no_of_bits) |
| 274 | { |
| 275 | if (no_of_bits <= 8) |
| 276 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 277 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 278 | pui8 = pui8DATA(data, pDescr->offset); |
| 279 | *pui8 = ui8 + (guint8)pDescr->descr.value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 280 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 281 | } |
| 282 | else if (no_of_bits <= 16) |
| 283 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 284 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 285 | pui16 = pui16DATA(data, pDescr->offset); |
| 286 | *pui16 = ui16 + (guint16)pDescr->descr.value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 287 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 288 | } |
| 289 | else if (no_of_bits <= 32) |
| 290 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 291 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 292 | pui32 = pui32DATA(data, pDescr->offset); |
| 293 | *pui32 = ui32 + (guint16)pDescr->descr.value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 294 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 295 | } |
| 296 | else |
| 297 | { |
| 298 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 299 | } |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 304 | } |
| 305 | |
| 306 | remaining_bits_len -= no_of_bits; |
| 307 | bit_offset += no_of_bits; |
| 308 | pDescr++; |
| 309 | break; |
| 310 | } |
| 311 | |
| 312 | case CSN_UINT_LH: |
| 313 | { |
| 314 | guint8 no_of_bits = (guint8) pDescr->i; |
| 315 | |
| 316 | if (remaining_bits_len >= no_of_bits) |
| 317 | { |
| 318 | remaining_bits_len -= no_of_bits; |
| 319 | if (no_of_bits <= 8) |
| 320 | { |
| 321 | guint8 ui8 = get_masked_bits8(vector, readIndex, bit_offset, no_of_bits); |
| 322 | pui8 = pui8DATA(data, pDescr->offset); |
| 323 | *pui8 = ui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 324 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 325 | } |
| 326 | else |
| 327 | {/* Maybe we should support more than 8 bits ? */ |
| 328 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 329 | } |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 334 | } |
| 335 | |
| 336 | remaining_bits_len -= no_of_bits; |
| 337 | bit_offset += no_of_bits; |
| 338 | pDescr++; |
| 339 | break; |
| 340 | } |
| 341 | |
| 342 | case CSN_UINT_ARRAY: |
| 343 | { |
| 344 | guint8 no_of_bits = (guint8) pDescr->i; |
| 345 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 346 | |
| 347 | if (pDescr->serialize.value != 0) |
| 348 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 349 | nCount = *pui16DATA(data, nCount); |
| 350 | } |
| 351 | |
| 352 | if (remaining_bits_len >= no_of_bits) |
| 353 | { |
| 354 | remaining_bits_len -= (no_of_bits*nCount); |
| 355 | if (no_of_bits <= 8) |
| 356 | { |
| 357 | pui8 = pui8DATA(data, pDescr->offset); |
| 358 | do |
| 359 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 360 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 361 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 362 | pui8++; |
| 363 | bit_offset += no_of_bits; |
| 364 | } while (--nCount > 0); |
| 365 | } |
| 366 | else if (no_of_bits <= 16) |
| 367 | { |
| 368 | return ProcessError(readIndex,"csnStreamDecoder NOTIMPLEMENTED", 999, pDescr); |
| 369 | } |
| 370 | else if (no_of_bits <= 32) |
| 371 | { |
| 372 | return ProcessError(readIndex,"csnStreamDecoder NOTIMPLEMENTED", 999, pDescr); |
| 373 | } |
| 374 | else |
| 375 | { |
| 376 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 377 | } |
| 378 | } |
| 379 | else |
| 380 | { |
| 381 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 382 | } |
| 383 | pDescr++; |
| 384 | break; |
| 385 | } |
| 386 | |
| 387 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 388 | case CSN_VARIABLE_TARRAY: |
| 389 | case CSN_TYPE_ARRAY: |
| 390 | { |
| 391 | gint16 Status; |
| 392 | csnStream_t arT = *ar; |
| 393 | gint16 nCount = pDescr->i; |
| 394 | guint16 nSize = (guint16)(gint32)pDescr->serialize.value; |
| 395 | |
| 396 | pui8 = pui8DATA(data, pDescr->offset); |
| 397 | if (pDescr->type == CSN_VARIABLE_TARRAY) |
| 398 | { /* Count specified in field */ |
| 399 | nCount = *pui8DATA(data, pDescr->i); |
| 400 | } |
| 401 | else if (pDescr->type == CSN_VARIABLE_TARRAY_OFFSET) |
| 402 | { /* Count specified in field */ |
| 403 | nCount = *pui8DATA(data, pDescr->i); |
| 404 | /* nCount--; the 1 offset is already taken into account in CSN_UINT_OFFSET */ |
| 405 | } |
| 406 | |
| 407 | while (nCount > 0) |
| 408 | { /* resulting array of length 0 is possible |
| 409 | * but no bits shall be read from bitstream |
| 410 | */ |
| 411 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 412 | LOGPC(DCSN1, LOGL_NOTICE, "%s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 413 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 414 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pui8); |
| 415 | if (Status >= 0) |
| 416 | { |
| 417 | pui8 += nSize; |
| 418 | remaining_bits_len = arT.remaining_bits_len; |
| 419 | bit_offset = arT.bit_offset; |
| 420 | } |
| 421 | else |
| 422 | { |
| 423 | return Status; |
| 424 | } |
| 425 | nCount--; |
| 426 | } |
| 427 | |
| 428 | pDescr++; |
| 429 | break; |
| 430 | } |
| 431 | |
| 432 | case CSN_BITMAP: |
| 433 | { /* bitmap with given length. The result is left aligned! */ |
| 434 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 435 | |
| 436 | if (no_of_bits > 0) |
| 437 | { |
| 438 | |
| 439 | if (no_of_bits <= 32) |
| 440 | { |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 441 | for(unsigned ib = 0; ib < 4; ib++) |
| 442 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 443 | guint8 ui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 444 | pui8 = pui8DATA(data, pDescr->offset+ib); |
| 445 | *pui8 = ui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 446 | LOGPC(DCSN1, LOGL_NOTICE, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 447 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 448 | } |
| 449 | else if (no_of_bits <= 64) |
| 450 | { |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 451 | for(unsigned ib = 0; ib < 8; ib++) |
| 452 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 453 | guint8 ui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 454 | pui8 = pui8DATA(data, pDescr->offset+ib); |
| 455 | *pui8 = ui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 456 | LOGPC(DCSN1, LOGL_NOTICE, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 457 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 458 | } |
| 459 | else |
| 460 | { |
| 461 | return ProcessError(readIndex,"csnStreamDecoder NOT IMPLEMENTED", 999, pDescr); |
| 462 | } |
| 463 | |
| 464 | remaining_bits_len -= no_of_bits; |
| 465 | assert(remaining_bits_len >= 0); |
| 466 | bit_offset += no_of_bits; |
| 467 | } |
| 468 | /* bitmap was successfully extracted or it was empty */ |
| 469 | |
| 470 | pDescr++; |
| 471 | break; |
| 472 | } |
| 473 | |
| 474 | case CSN_TYPE: |
| 475 | { |
| 476 | gint16 Status; |
| 477 | csnStream_t arT = *ar; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 478 | LOGPC(DCSN1, LOGL_NOTICE, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 479 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 480 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 481 | LOGPC(DCSN1, LOGL_NOTICE, ": End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 482 | if (Status >= 0) |
| 483 | { |
| 484 | remaining_bits_len = arT.remaining_bits_len; |
| 485 | bit_offset = arT.bit_offset; |
| 486 | pDescr++; |
| 487 | } |
| 488 | else |
| 489 | { |
| 490 | /* Has already been processed: ProcessError("csnStreamDecoder", Status, pDescr); */ |
| 491 | return Status; |
| 492 | } |
| 493 | |
| 494 | break; |
| 495 | } |
| 496 | |
| 497 | case CSN_CHOICE: |
| 498 | { |
| 499 | gint16 count = pDescr->i; |
| 500 | guint8 i = 0; |
| 501 | CSN_ChoiceElement_t* pChoice = (CSN_ChoiceElement_t*) pDescr->descr.ptr; |
| 502 | |
| 503 | while (count > 0) |
| 504 | { |
| 505 | guint8 no_of_bits = pChoice->bits; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 506 | guint8 value = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 507 | if (value == pChoice->value) |
| 508 | { |
| 509 | CSN_DESCR descr[2]; |
| 510 | gint16 Status; |
| 511 | csnStream_t arT = *ar; |
| 512 | |
| 513 | descr[0] = pChoice->descr; |
| 514 | memset(&descr[1], 0x00, sizeof(CSN_DESCR)); |
| 515 | descr[1].type = CSN_END; |
| 516 | pui8 = pui8DATA(data, pDescr->offset); |
| 517 | *pui8 = i; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 518 | LOGPC(DCSN1, LOGL_NOTICE, "Choice %s = %u | ", pDescr->sz , (unsigned)value); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 519 | bit_offset += no_of_bits; |
| 520 | remaining_bits_len -= no_of_bits; |
| 521 | |
| 522 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 523 | Status = csnStreamDecoder(&arT, descr, vector, readIndex, data); |
| 524 | |
| 525 | if (Status >= 0) |
| 526 | { |
| 527 | remaining_bits_len = arT.remaining_bits_len; |
| 528 | bit_offset = arT.bit_offset; |
| 529 | } |
| 530 | else |
| 531 | { |
| 532 | return Status; |
| 533 | } |
| 534 | break; |
| 535 | } |
| 536 | |
| 537 | readIndex -= no_of_bits; |
| 538 | count--; |
| 539 | pChoice++; |
| 540 | i++; |
| 541 | } |
| 542 | |
| 543 | pDescr++; |
| 544 | break; |
| 545 | } |
| 546 | |
| 547 | case CSN_SERIALIZE: |
| 548 | { |
| 549 | StreamSerializeFcn_t serialize = pDescr->serialize.fcn; |
| 550 | csnStream_t arT = *ar; |
| 551 | gint16 Status = -1; |
| 552 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 553 | LOGPC(DCSN1, LOGL_NOTICE, "%s length = %d | ", pDescr->sz , (int)bitvec_read_field(vector, readIndex, 7)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 554 | arT.direction = 1; |
| 555 | bit_offset += 7; |
| 556 | remaining_bits_len -= 7; |
| 557 | |
| 558 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 559 | Status = serialize(&arT, vector, readIndex, pvDATA(data, pDescr->offset)); |
| 560 | |
| 561 | if (Status >= 0) |
| 562 | { |
| 563 | remaining_bits_len = arT.remaining_bits_len; |
| 564 | bit_offset = arT.bit_offset; |
| 565 | pDescr++; |
| 566 | } |
| 567 | else |
| 568 | { |
| 569 | /* Has already been processed: */ |
| 570 | return Status; |
| 571 | } |
| 572 | |
| 573 | break; |
| 574 | } |
| 575 | |
| 576 | case CSN_UNION_LH: |
| 577 | case CSN_UNION: |
| 578 | { |
| 579 | gint16 Bits; |
| 580 | guint8 index; |
| 581 | gint16 count = pDescr->i; |
| 582 | const CSN_DESCR* pDescrNext = pDescr; |
| 583 | |
| 584 | pDescrNext += count + 1; /* now this is next after the union */ |
| 585 | if ((count <= 0) || (count > 16)) |
| 586 | { |
| 587 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_INVALID_UNION_INDEX, pDescr); |
| 588 | } |
| 589 | |
| 590 | /* Now get the bits to extract the index */ |
| 591 | Bits = ixBitsTab[count]; |
| 592 | index = 0; |
| 593 | |
| 594 | while (Bits > 0) |
| 595 | { |
| 596 | index <<= 1; |
| 597 | |
| 598 | if (CSN_UNION_LH == pDescr->type) |
| 599 | { |
| 600 | index |= get_masked_bits8(vector,readIndex, bit_offset, 1); |
| 601 | } |
| 602 | else |
| 603 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 604 | index |= bitvec_read_field(vector, readIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 605 | } |
| 606 | remaining_bits_len--; |
| 607 | bit_offset++; |
| 608 | Bits--; |
| 609 | } |
| 610 | |
| 611 | /* Assign UnionType */ |
| 612 | pui8 = pui8DATA(data, pDescr->offset); |
| 613 | *pui8 = index; |
| 614 | |
| 615 | |
| 616 | /* script index to continue on, limited in case we do not have a power of 2 */ |
| 617 | pDescr += (MIN(index + 1, count)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 618 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 619 | |
| 620 | switch (pDescr->type) |
| 621 | { /* get the right element of the union based on computed index */ |
| 622 | |
| 623 | case CSN_BIT: |
| 624 | { |
| 625 | pui8 = pui8DATA(data, pDescr->offset); |
| 626 | *pui8 = 0x00; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 627 | if (bitvec_read_field(vector, readIndex, 1) > 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 628 | { |
| 629 | *pui8 = 0x01; |
| 630 | } |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 631 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 632 | remaining_bits_len -= 1; |
| 633 | bit_offset++; |
| 634 | pDescr++; |
| 635 | break; |
| 636 | } |
| 637 | |
| 638 | case CSN_NULL: |
| 639 | { /* Empty member! */ |
| 640 | pDescr++; |
| 641 | break; |
| 642 | } |
| 643 | |
| 644 | case CSN_UINT: |
| 645 | { |
| 646 | guint8 no_of_bits = (guint8) pDescr->i; |
| 647 | if (remaining_bits_len >= no_of_bits) |
| 648 | { |
| 649 | remaining_bits_len -= no_of_bits; |
| 650 | |
| 651 | if (no_of_bits <= 8) |
| 652 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 653 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 654 | pui8 = pui8DATA(data, pDescr->offset); |
| 655 | *pui8 = ui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 656 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 657 | } |
| 658 | else if (no_of_bits <= 16) |
| 659 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 660 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 661 | pui16 = pui16DATA(data, pDescr->offset); |
| 662 | *pui16 = ui16; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 663 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 664 | } |
| 665 | else if (no_of_bits <= 32) |
| 666 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 667 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 668 | pui32 = pui32DATA(data, pDescr->offset); |
| 669 | *pui32 = ui32; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 670 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 671 | } |
| 672 | else |
| 673 | { |
| 674 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 675 | } |
| 676 | } |
| 677 | else |
| 678 | { |
| 679 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 680 | } |
| 681 | |
| 682 | bit_offset += no_of_bits; |
| 683 | pDescr++; |
| 684 | break; |
| 685 | } |
| 686 | |
| 687 | case CSN_UINT_OFFSET: |
| 688 | { |
| 689 | guint8 no_of_bits = (guint8) pDescr->i; |
| 690 | |
| 691 | if (remaining_bits_len >= no_of_bits) |
| 692 | { |
| 693 | if (no_of_bits <= 8) |
| 694 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 695 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 696 | pui8 = pui8DATA(data, pDescr->offset); |
| 697 | *pui8 = ui8 + (guint8)pDescr->descr.value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 698 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 699 | } |
| 700 | else if (no_of_bits <= 16) |
| 701 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 702 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 703 | pui16 = pui16DATA(data, pDescr->offset); |
| 704 | *pui16 = ui16 + (guint16)pDescr->descr.value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 705 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 706 | } |
| 707 | else if (no_of_bits <= 32) |
| 708 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 709 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 710 | pui32 = pui32DATA(data, pDescr->offset); |
| 711 | *pui32 = ui32 + (guint16)pDescr->descr.value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 712 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 713 | } |
| 714 | else |
| 715 | { |
| 716 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 717 | } |
| 718 | } |
| 719 | else |
| 720 | { |
| 721 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 722 | } |
| 723 | |
| 724 | bit_offset += no_of_bits; |
| 725 | pDescr++; |
| 726 | break; |
| 727 | } |
| 728 | |
| 729 | case CSN_UINT_LH: |
| 730 | { |
| 731 | guint8 no_of_bits = (guint8) pDescr->i; |
| 732 | |
| 733 | if (remaining_bits_len >= no_of_bits) |
| 734 | { |
| 735 | if (no_of_bits <= 8) |
| 736 | { |
| 737 | guint8 ui8 = get_masked_bits8(vector, readIndex, bit_offset, no_of_bits); |
| 738 | pui8 = pui8DATA(data, pDescr->offset); |
| 739 | *pui8 = ui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 740 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 741 | } |
| 742 | else |
| 743 | { /* Maybe we should support more than 8 bits ? */ |
| 744 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 745 | } |
| 746 | } |
| 747 | else |
| 748 | { |
| 749 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 750 | } |
| 751 | |
| 752 | bit_offset += no_of_bits; |
| 753 | pDescr++; |
| 754 | break; |
| 755 | } |
| 756 | |
| 757 | case CSN_UINT_ARRAY: |
| 758 | { |
| 759 | guint8 no_of_bits = (guint8) pDescr->i; |
| 760 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 761 | |
| 762 | if (pDescr->serialize.value != 0) |
| 763 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 764 | nCount = *pui16DATA(data, nCount); |
| 765 | } |
| 766 | |
| 767 | if (remaining_bits_len >= no_of_bits) |
| 768 | { |
| 769 | remaining_bits_len -= (no_of_bits * nCount); |
| 770 | if (no_of_bits <= 8) |
| 771 | { |
| 772 | pui8 = pui8DATA(data, pDescr->offset); |
| 773 | |
| 774 | while (nCount > 0) |
| 775 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 776 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 777 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 778 | pui8++; |
| 779 | bit_offset += no_of_bits; |
| 780 | nCount--; |
| 781 | } |
| 782 | } |
| 783 | else if (no_of_bits <= 16) |
| 784 | { |
| 785 | pui16 = pui16DATA(data, pDescr->offset); |
| 786 | |
| 787 | while (nCount > 0) |
| 788 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 789 | *pui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 790 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 791 | pui16++; |
| 792 | bit_offset += no_of_bits; |
| 793 | nCount--; |
| 794 | } |
| 795 | } |
| 796 | else if (no_of_bits <= 32) |
| 797 | { /* not supported */ |
| 798 | return ProcessError(readIndex,"csnStreamDecoder NOT IMPLEMENTED", 999, pDescr); |
| 799 | } |
| 800 | else |
| 801 | { |
| 802 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 803 | } |
| 804 | } |
| 805 | else |
| 806 | { |
| 807 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 808 | } |
| 809 | |
| 810 | pDescr++; |
| 811 | break; |
| 812 | } |
| 813 | |
| 814 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 815 | case CSN_VARIABLE_TARRAY: |
| 816 | case CSN_TYPE_ARRAY: |
| 817 | { |
| 818 | gint16 Status; |
| 819 | csnStream_t arT = *ar; |
| 820 | guint16 nCount = (guint16) pDescr->i; |
| 821 | guint16 nSize = (guint16)(guint32)pDescr->serialize.value; |
| 822 | |
| 823 | pui8 = pui8DATA(data, pDescr->offset); |
| 824 | |
| 825 | if (CSN_VARIABLE_TARRAY == pDescr->type) |
| 826 | { /* Count specified in field */ |
| 827 | nCount = *pui8DATA(data, pDescr->i); |
| 828 | } |
| 829 | else if (CSN_VARIABLE_TARRAY_OFFSET == pDescr->type) |
| 830 | { /* Count specified in field */ |
| 831 | nCount = *pui8DATA(data, pDescr->i); |
| 832 | nCount--; /* Offset 1 */ |
| 833 | } |
| 834 | |
| 835 | while (nCount--) /* Changed to handle length = 0. */ |
| 836 | { |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 837 | LOGPC(DCSN1, LOGL_NOTICE, "%s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 838 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 839 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pui8); |
| 840 | if (Status >= 0) |
| 841 | { |
| 842 | pui8 += nSize; |
| 843 | remaining_bits_len = arT.remaining_bits_len; |
| 844 | bit_offset = arT.bit_offset; |
| 845 | } |
| 846 | else |
| 847 | { |
| 848 | return Status; |
| 849 | } |
| 850 | } |
| 851 | |
| 852 | pDescr++; |
| 853 | break; |
| 854 | } |
| 855 | |
| 856 | case CSN_BITMAP: |
| 857 | { /* bitmap with given length. The result is left aligned! */ |
| 858 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 859 | |
| 860 | if (no_of_bits > 0) |
| 861 | { |
| 862 | |
| 863 | if (no_of_bits <= 32) |
| 864 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 865 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 866 | pui32 = pui32DATA(data, pDescr->offset); |
| 867 | *pui32 = ui32; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 868 | } |
| 869 | else if (no_of_bits <= 64) |
| 870 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 871 | guint64 ui64 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 872 | pui64 = pui64DATA(data, pDescr->offset); |
| 873 | *pui64 = ui64; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 874 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui64); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 875 | } |
| 876 | else |
| 877 | { |
| 878 | return ProcessError(readIndex,"csnStreamDecoder NOT IMPLEMENTED", 999, pDescr); |
| 879 | } |
| 880 | |
| 881 | remaining_bits_len -= no_of_bits; |
| 882 | assert(remaining_bits_len >= 0); |
| 883 | bit_offset += no_of_bits; |
| 884 | } |
| 885 | /* bitmap was successfully extracted or it was empty */ |
| 886 | |
| 887 | pDescr++; |
| 888 | break; |
| 889 | } |
| 890 | |
| 891 | case CSN_TYPE: |
| 892 | { |
| 893 | gint16 Status; |
| 894 | csnStream_t arT = *ar; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 895 | LOGPC(DCSN1, LOGL_NOTICE, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 896 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 897 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 898 | LOGPC(DCSN1, LOGL_NOTICE, " : End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 899 | if (Status >= 0) |
| 900 | { |
| 901 | remaining_bits_len = arT.remaining_bits_len; |
| 902 | bit_offset = arT.bit_offset; |
| 903 | pDescr++; |
| 904 | } |
| 905 | else |
| 906 | { /* return error code Has already been processed: */ |
| 907 | return Status; |
| 908 | } |
| 909 | |
| 910 | break; |
| 911 | } |
| 912 | |
| 913 | default: |
| 914 | { /* descriptions of union elements other than above are illegal */ |
| 915 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_IN_SCRIPT, pDescr); |
| 916 | } |
| 917 | } |
| 918 | |
| 919 | pDescr = pDescrNext; |
| 920 | break; |
| 921 | } |
| 922 | |
| 923 | case CSN_EXIST: |
| 924 | case CSN_EXIST_LH: |
| 925 | { |
| 926 | guint8 fExist; |
| 927 | |
| 928 | pui8 = pui8DATA(data, pDescr->offset); |
| 929 | |
| 930 | if (CSN_EXIST_LH == pDescr->type) |
| 931 | { |
| 932 | fExist = get_masked_bits8(vector, readIndex, bit_offset, 1); |
| 933 | } |
| 934 | else |
| 935 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 936 | fExist = bitvec_read_field(vector, readIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 937 | } |
| 938 | |
| 939 | *pui8 = fExist; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 940 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 941 | pDescr++; |
| 942 | remaining_bits_len -= 1; |
| 943 | |
| 944 | if (!fExist) |
| 945 | { |
| 946 | ar->remaining_bits_len = remaining_bits_len; |
| 947 | ar->bit_offset = bit_offset; |
| 948 | return remaining_bits_len; |
| 949 | } |
| 950 | |
| 951 | break; |
| 952 | } |
| 953 | |
| 954 | case CSN_NEXT_EXIST: |
| 955 | { |
| 956 | guint8 fExist; |
| 957 | |
| 958 | pui8 = pui8DATA(data, pDescr->offset); |
| 959 | |
| 960 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL description element */ |
| 961 | if ((pDescr->descr.ptr != NULL) && (remaining_bits_len == 0)) |
| 962 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 963 | |
| 964 | /* Skip i entries + this entry */ |
| 965 | pDescr += pDescr->i + 1; |
| 966 | |
| 967 | /* pDescr now must be pointing to a CSN_END entry, if not this is an error */ |
| 968 | if ( pDescr->type != CSN_END ) |
| 969 | { /* Substract one more bit from remaining_bits_len to make the "not enough bits" error to be triggered */ |
| 970 | remaining_bits_len--; |
| 971 | } |
| 972 | |
| 973 | /* Set the data member to "not exist" */ |
| 974 | *pui8 = 0; |
| 975 | break; |
| 976 | } |
| 977 | |
| 978 | /* the "regular" M_NEXT_EXIST description element */ |
| 979 | |
| 980 | fExist = 0x00; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 981 | if (bitvec_read_field(vector, readIndex, 1)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 982 | { |
| 983 | fExist = 0x01; |
| 984 | } |
| 985 | |
| 986 | *pui8 = fExist; |
| 987 | remaining_bits_len -= 1; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 988 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 989 | ++bit_offset; |
| 990 | |
| 991 | if (fExist == 0) |
| 992 | { /* Skip 'i' entries */ |
| 993 | pDescr += pDescr->i; |
| 994 | } |
| 995 | |
| 996 | pDescr++; |
| 997 | break; |
| 998 | } |
| 999 | |
| 1000 | case CSN_NEXT_EXIST_LH: |
| 1001 | { |
| 1002 | guint8 fExist; |
| 1003 | pui8 = pui8DATA(data, pDescr->offset); |
| 1004 | |
| 1005 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL_LH description element */ |
| 1006 | if ((pDescr->descr.ptr != NULL) && (remaining_bits_len == 0)) |
| 1007 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 1008 | |
| 1009 | /* skip 'i' entries + this entry */ |
| 1010 | pDescr += pDescr->i + 1; |
| 1011 | |
| 1012 | /* pDescr now must be pointing to a CSN_END entry, if not this is an error */ |
| 1013 | if ( pDescr->type != CSN_END ) |
| 1014 | { /* substract one more bit from remaining_bits_len to make the "not enough bits" error to be triggered */ |
| 1015 | remaining_bits_len--; |
| 1016 | } |
| 1017 | |
| 1018 | /* set the data member to "not exist" */ |
| 1019 | *pui8 = 0; |
| 1020 | break; |
| 1021 | } |
| 1022 | |
| 1023 | /* the "regular" M_NEXT_EXIST_LH description element */ |
| 1024 | fExist = get_masked_bits8(vector,readIndex,bit_offset, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1025 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)fExist); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1026 | *pui8++ = fExist; |
| 1027 | remaining_bits_len -= 1; |
| 1028 | |
| 1029 | bit_offset++; |
| 1030 | |
| 1031 | if (fExist == 0) |
| 1032 | { /* Skip 'i' entries */ |
| 1033 | pDescr += pDescr->i; |
| 1034 | } |
| 1035 | pDescr++; |
| 1036 | |
| 1037 | break; |
| 1038 | } |
| 1039 | |
| 1040 | case CSN_VARIABLE_BITMAP_1: |
| 1041 | { /* Bitmap from here and to the end of message */ |
| 1042 | |
| 1043 | *pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 1044 | |
| 1045 | /*no break - |
| 1046 | * with a length set we have a regular variable length bitmap so we continue */ |
| 1047 | } |
| 1048 | |
| 1049 | case CSN_VARIABLE_BITMAP: |
| 1050 | { /* {CSN_VARIABLE_BITMAP, 0, offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1051 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 1052 | * Bit array with length (in bits) specified in parameter (pDescr->descr) |
| 1053 | * The result is right aligned! |
| 1054 | */ |
| 1055 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 1056 | |
| 1057 | no_of_bits += pDescr->i; /* adjusted by offset */ |
| 1058 | |
| 1059 | if (no_of_bits > 0) |
| 1060 | { |
| 1061 | remaining_bits_len -= no_of_bits; |
| 1062 | |
| 1063 | if (remaining_bits_len < 0) |
| 1064 | { |
| 1065 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1066 | } |
| 1067 | |
| 1068 | { /* extract bits */ |
| 1069 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 1070 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 1071 | |
| 1072 | if (nB1 > 0) |
| 1073 | { /* take care of the first byte - it will be right aligned */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1074 | *pui8 = bitvec_read_field(vector, readIndex, nB1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1075 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1076 | pui8++; |
| 1077 | no_of_bits -= nB1; |
| 1078 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
| 1079 | } |
| 1080 | |
| 1081 | /* remaining no_of_bits is a multiple of 8 or 0 */ |
| 1082 | while (no_of_bits > 0) |
| 1083 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1084 | *pui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1085 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1086 | pui8++; |
| 1087 | no_of_bits -= 8; |
| 1088 | } |
| 1089 | } |
| 1090 | } |
| 1091 | pDescr++; |
| 1092 | break; |
| 1093 | } |
| 1094 | |
| 1095 | case CSN_LEFT_ALIGNED_VAR_BMP_1: |
| 1096 | { /* Bitmap from here and to the end of message */ |
| 1097 | |
| 1098 | *pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 1099 | |
| 1100 | /* no break - |
| 1101 | * with a length set we have a regular left aligned variable length bitmap so we continue |
| 1102 | */ |
| 1103 | } |
| 1104 | |
| 1105 | case CSN_LEFT_ALIGNED_VAR_BMP: |
| 1106 | { /* {CSN_LEFT_ALIGNED_VAR_BMP, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1107 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 1108 | * bit array with length (in bits) specified in parameter (pDescr->descr) |
| 1109 | */ |
| 1110 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value);/* Size of bitmap */ |
| 1111 | |
| 1112 | no_of_bits += pDescr->i;/* size adjusted by offset */ |
| 1113 | |
| 1114 | if (no_of_bits > 0) |
| 1115 | { |
| 1116 | remaining_bits_len -= no_of_bits; |
| 1117 | |
| 1118 | if (remaining_bits_len < 0) |
| 1119 | { |
| 1120 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1121 | } |
| 1122 | |
| 1123 | { /* extract bits */ |
| 1124 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 1125 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 1126 | |
| 1127 | while (no_of_bits > 0) |
| 1128 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1129 | *pui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1130 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1131 | pui8++; |
| 1132 | no_of_bits -= 8; |
| 1133 | } |
| 1134 | if (nB1 > 0) |
| 1135 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1136 | *pui8 = bitvec_read_field(vector, readIndex, nB1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1137 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1138 | pui8++; |
| 1139 | no_of_bits -= nB1; |
| 1140 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
| 1141 | } |
| 1142 | } |
| 1143 | } |
| 1144 | |
| 1145 | /* bitmap was successfully extracted or it was empty */ |
| 1146 | pDescr++; |
| 1147 | break; |
| 1148 | } |
| 1149 | |
| 1150 | case CSN_VARIABLE_ARRAY: |
| 1151 | { /* {int type; int i; void* descr; int offset; const char* sz; } CSN_DESCR; |
| 1152 | * {CSN_VARIABLE_ARRAY, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1153 | * Array with length specified in parameter: |
| 1154 | * <count: bit (x)> |
| 1155 | * <list: octet(count + offset)> |
| 1156 | */ |
| 1157 | gint16 count = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 1158 | |
| 1159 | count += pDescr->i; /* Adjusted by offset */ |
| 1160 | |
| 1161 | if (count > 0) |
| 1162 | { |
| 1163 | remaining_bits_len -= count * 8; |
| 1164 | |
| 1165 | if (remaining_bits_len < 0) |
| 1166 | { |
| 1167 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1168 | } |
| 1169 | |
| 1170 | pui8 = pui8DATA(data, pDescr->offset); |
| 1171 | |
| 1172 | while (count > 0) |
| 1173 | { |
| 1174 | readIndex -= 8; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1175 | *pui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1176 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1177 | pui8++; |
| 1178 | bit_offset += 8; |
| 1179 | count--; |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | pDescr++; |
| 1184 | break; |
| 1185 | } |
| 1186 | |
| 1187 | case CSN_RECURSIVE_ARRAY: |
| 1188 | { /* Recursive way to specify an array: <list> ::= {1 <number: bit (4)> <list> | 0} |
| 1189 | * or more generally: <list> ::= { <tag> <element> <list> | <EndTag> } |
| 1190 | * where <element> ::= bit(value) |
| 1191 | * <tag> ::= 0 | 1 |
| 1192 | * <EndTag> ::= reversed tag i.e. tag == 1 -> EndTag == 0 and vice versa |
| 1193 | * {CSN_RECURSIVE_ARRAY, _BITS, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1194 | * REMARK: recursive way to specify an array but an iterative implementation! |
| 1195 | */ |
| 1196 | gint16 no_of_bits = pDescr->i; |
| 1197 | guint8 ElementCount = 0; |
| 1198 | |
| 1199 | pui8 = pui8DATA(data, pDescr->offset); |
| 1200 | |
| 1201 | while (existNextElement(vector, readIndex, Tag)) |
| 1202 | { /* tag control shows existence of next list elements */ |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1203 | LOGPC(DCSN1, LOGL_NOTICE, "%s = Exist | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1204 | bit_offset++; |
| 1205 | remaining_bits_len--; |
| 1206 | |
| 1207 | /* extract and store no_of_bits long element from bitstream */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1208 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1209 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1210 | pui8++; |
| 1211 | remaining_bits_len -= no_of_bits; |
| 1212 | ElementCount++; |
| 1213 | |
| 1214 | if (remaining_bits_len < 0) |
| 1215 | { |
| 1216 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1217 | } |
| 1218 | |
| 1219 | bit_offset += no_of_bits; |
| 1220 | } |
| 1221 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1222 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)bitvec_read_field(vector, readIndex, 1)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1223 | /* existNextElement() returned FALSE, 1 bit consumed */ |
| 1224 | bit_offset++; |
| 1225 | |
| 1226 | /* Store the counted number of elements of the array */ |
| 1227 | *pui8DATA(data, (gint16)pDescr->descr.value) = ElementCount; |
| 1228 | |
| 1229 | pDescr++; |
| 1230 | break; |
| 1231 | } |
| 1232 | |
| 1233 | case CSN_RECURSIVE_TARRAY: |
| 1234 | { /* Recursive way to specify an array of type: <lists> ::= { 1 <type> } ** 0 ; |
| 1235 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
| 1236 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE)} |
| 1237 | */ |
| 1238 | gint16 nSizeElement = (gint16)(gint32)pDescr->serialize.value; |
| 1239 | guint8 ElementCount = 0; |
| 1240 | pui8 = pui8DATA(data, pDescr->offset); |
| 1241 | |
| 1242 | while (existNextElement(vector, readIndex, Tag)) |
| 1243 | { /* tag control shows existence of next list elements */ |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1244 | LOGPC(DCSN1, LOGL_NOTICE, "%s = Exist | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1245 | /* existNextElement() returned TRUE, 1 bit consumed */ |
| 1246 | bit_offset++; |
| 1247 | remaining_bits_len--; |
| 1248 | ElementCount++; |
| 1249 | |
| 1250 | { /* unpack the following data structure */ |
| 1251 | csnStream_t arT = *ar; |
| 1252 | gint16 Status; |
| 1253 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1254 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pvDATA(data, pDescr->offset)); |
| 1255 | |
| 1256 | if (Status >= 0) |
| 1257 | { /* successful completion */ |
| 1258 | pui8 += nSizeElement; /* -> to next data element */ |
| 1259 | remaining_bits_len = arT.remaining_bits_len; |
| 1260 | bit_offset = arT.bit_offset; |
| 1261 | } |
| 1262 | else |
| 1263 | { /* something went awry */ |
| 1264 | return Status; |
| 1265 | } |
| 1266 | } |
| 1267 | |
| 1268 | if (remaining_bits_len < 0) |
| 1269 | { |
| 1270 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1271 | } |
| 1272 | } |
| 1273 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1274 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)bitvec_read_field(vector, readIndex, 1)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1275 | |
| 1276 | /* existNextElement() returned FALSE, 1 bit consumed */ |
| 1277 | bit_offset++; |
| 1278 | |
| 1279 | /* Store the counted number of elements of the array */ |
| 1280 | *pui8DATA(data, (gint16)(gint32)pDescr->i) = ElementCount; |
| 1281 | |
| 1282 | pDescr++; |
| 1283 | break; |
| 1284 | } |
| 1285 | |
| 1286 | case CSN_RECURSIVE_TARRAY_2: |
| 1287 | { /* Recursive way to specify an array of type: <list> ::= <type> { 0 <type> } ** 1 ; */ |
| 1288 | |
| 1289 | Tag = REVERSED_TAG; |
| 1290 | |
| 1291 | /* NO break - |
| 1292 | * handling is exactly the same as for CSN_RECURSIVE_TARRAY_1 so we continue |
| 1293 | */ |
| 1294 | } |
| 1295 | |
| 1296 | case CSN_RECURSIVE_TARRAY_1: |
| 1297 | { /* Recursive way to specify an array of type: <lists> ::= <type> { 1 <type> } ** 0 ; |
| 1298 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
| 1299 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE)} |
| 1300 | */ |
| 1301 | gint16 nSizeElement = (gint16)(gint32)pDescr->serialize.value; |
| 1302 | guint8 ElementCount = 0; |
| 1303 | csnStream_t arT = *ar; |
| 1304 | gboolean EndOfList = FALSE; |
| 1305 | gint16 Status; |
| 1306 | pui8 = pui8DATA(data, pDescr->offset); |
| 1307 | |
| 1308 | do |
| 1309 | { /* get data element */ |
| 1310 | ElementCount++; |
| 1311 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1312 | LOGPC(DCSN1, LOGL_NOTICE, "%s { | ", pDescr->sz); |
| 1313 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1314 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1315 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pvDATA(data, pDescr->offset)); |
| 1316 | |
| 1317 | if (Status >= 0) |
| 1318 | { /* successful completion */ |
| 1319 | pui8 += nSizeElement; /* -> to next */ |
| 1320 | remaining_bits_len = arT.remaining_bits_len; |
| 1321 | bit_offset = arT.bit_offset; |
| 1322 | } |
| 1323 | else |
| 1324 | { /* something went awry */ |
| 1325 | return Status; |
| 1326 | } |
| 1327 | |
| 1328 | if (remaining_bits_len < 0) |
| 1329 | { |
| 1330 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1331 | } |
| 1332 | |
| 1333 | /* control of next element's tag */ |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1334 | LOGPC(DCSN1, LOGL_NOTICE, "%s } | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1335 | EndOfList = !(existNextElement(vector, readIndex, Tag)); |
| 1336 | |
| 1337 | bit_offset++; |
| 1338 | remaining_bits_len--; /* 1 bit consumed (tag) */ |
| 1339 | } while (!EndOfList); |
| 1340 | |
| 1341 | |
| 1342 | /* Store the count of the array */ |
| 1343 | *pui8DATA(data, pDescr->i) = ElementCount; |
| 1344 | Tag = STANDARD_TAG; /* in case it was set to "reversed" */ |
| 1345 | pDescr++; |
| 1346 | break; |
| 1347 | } |
| 1348 | |
| 1349 | case CSN_FIXED: |
| 1350 | { /* Verify the fixed bits */ |
| 1351 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1352 | guint32 ui32; |
| 1353 | |
| 1354 | if (no_of_bits <= 32) |
| 1355 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1356 | ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1357 | } |
| 1358 | else |
| 1359 | { |
| 1360 | return ProcessError(readIndex,"no_of_bits > 32", -1, pDescr); |
| 1361 | } |
| 1362 | if (ui32 != (unsigned)(gint32)pDescr->offset) |
| 1363 | { |
| 1364 | return ProcessError(readIndex,"csnStreamDecoder FIXED value does not match", -1, pDescr); |
| 1365 | } |
| 1366 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1367 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , (unsigned int)ui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1368 | remaining_bits_len -= no_of_bits; |
| 1369 | bit_offset += no_of_bits; |
| 1370 | pDescr++; |
| 1371 | break; |
| 1372 | } |
| 1373 | |
| 1374 | case CSN_CALLBACK: |
| 1375 | { |
| 1376 | return ProcessError(readIndex,"csnStreamDecoder Callback not implemented", -1, pDescr); |
| 1377 | break; |
| 1378 | } |
| 1379 | |
| 1380 | case CSN_TRAP_ERROR: |
| 1381 | { |
| 1382 | return ProcessError(readIndex,"csnStreamDecoder", pDescr->i, pDescr); |
| 1383 | } |
| 1384 | |
| 1385 | case CSN_END: |
| 1386 | { |
| 1387 | ar->remaining_bits_len = remaining_bits_len; |
| 1388 | ar->bit_offset = bit_offset; |
| 1389 | return remaining_bits_len; |
| 1390 | } |
| 1391 | |
| 1392 | default: |
| 1393 | { |
| 1394 | assert(0); |
| 1395 | } |
| 1396 | |
| 1397 | |
| 1398 | } |
| 1399 | |
| 1400 | } while (remaining_bits_len >= 0); |
| 1401 | |
| 1402 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | |
| 1407 | |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 1408 | gint16 csnStreamEncoder(csnStream_t* ar, const CSN_DESCR* pDescr, bitvec *vector, unsigned& writeIndex, void* data) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1409 | { |
| 1410 | gint remaining_bits_len = ar->remaining_bits_len; |
| 1411 | gint bit_offset = ar->bit_offset; |
| 1412 | guint8* pui8; |
| 1413 | guint16* pui16; |
| 1414 | guint32* pui32; |
| 1415 | guint64* pui64; |
| 1416 | |
| 1417 | guint8 Tag = STANDARD_TAG; |
| 1418 | |
| 1419 | if (remaining_bits_len <= 0) |
| 1420 | { |
| 1421 | return 0; |
| 1422 | } |
| 1423 | |
| 1424 | do |
| 1425 | { |
| 1426 | switch (pDescr->type) |
| 1427 | { |
| 1428 | case CSN_BIT: |
| 1429 | { |
| 1430 | if (remaining_bits_len > 0) |
| 1431 | { |
| 1432 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1433 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1434 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1435 | /* end add the bit value to protocol tree */ |
| 1436 | } |
| 1437 | else |
| 1438 | { |
| 1439 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1440 | } |
| 1441 | |
| 1442 | pDescr++; |
| 1443 | remaining_bits_len--; |
| 1444 | bit_offset++; |
| 1445 | break; |
| 1446 | } |
| 1447 | |
| 1448 | case CSN_NULL: |
| 1449 | { /* Empty member! */ |
| 1450 | pDescr++; |
| 1451 | break; |
| 1452 | } |
| 1453 | |
| 1454 | case CSN_UINT: |
| 1455 | { |
| 1456 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1457 | |
| 1458 | if (remaining_bits_len >= no_of_bits) |
| 1459 | { |
| 1460 | if (no_of_bits <= 8) |
| 1461 | { |
| 1462 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1463 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1464 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1465 | } |
| 1466 | else if (no_of_bits <= 16) |
| 1467 | { |
| 1468 | pui16 = pui16DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1469 | bitvec_write_field(vector, writeIndex, *pui16, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1470 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1471 | } |
| 1472 | else if (no_of_bits <= 32) |
| 1473 | { |
| 1474 | pui32 = pui32DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1475 | bitvec_write_field(vector, writeIndex, *pui32, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1476 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1477 | } |
| 1478 | else |
| 1479 | { |
| 1480 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1481 | } |
| 1482 | } |
| 1483 | else |
| 1484 | { |
| 1485 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1486 | } |
| 1487 | |
| 1488 | remaining_bits_len -= no_of_bits; |
| 1489 | bit_offset += no_of_bits; |
| 1490 | pDescr++; |
| 1491 | break; |
| 1492 | } |
| 1493 | |
| 1494 | case CSN_UINT_OFFSET: |
| 1495 | { |
| 1496 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1497 | |
| 1498 | if (remaining_bits_len >= no_of_bits) |
| 1499 | { |
| 1500 | if (no_of_bits <= 8) |
| 1501 | { |
| 1502 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1503 | bitvec_write_field(vector, writeIndex, *pui8 - (guint8)pDescr->descr.value, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1504 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)(*pui8 - (guint8)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1505 | } |
| 1506 | else if (no_of_bits <= 16) |
| 1507 | { |
| 1508 | pui16 = pui16DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1509 | bitvec_write_field(vector, writeIndex, *pui16 - (guint16)pDescr->descr.value, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1510 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , (unsigned short)(*pui16 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1511 | } |
| 1512 | else if (no_of_bits <= 32) |
| 1513 | { |
| 1514 | pui32 = pui32DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1515 | bitvec_write_field(vector, writeIndex, *pui32 - (guint16)pDescr->descr.value, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1516 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , (unsigned int)(*pui32 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1517 | } |
| 1518 | else |
| 1519 | { |
| 1520 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1521 | } |
| 1522 | } |
| 1523 | else |
| 1524 | { |
| 1525 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1526 | } |
| 1527 | |
| 1528 | remaining_bits_len -= no_of_bits; |
| 1529 | bit_offset += no_of_bits; |
| 1530 | pDescr++; |
| 1531 | break; |
| 1532 | } |
| 1533 | |
| 1534 | case CSN_UINT_LH: |
| 1535 | { |
| 1536 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1537 | |
| 1538 | if (remaining_bits_len >= no_of_bits) |
| 1539 | { |
| 1540 | remaining_bits_len -= no_of_bits; |
| 1541 | if (no_of_bits <= 8) |
| 1542 | { |
| 1543 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1544 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1545 | // TODO : Change get_masked_bits8() |
| 1546 | writeIndex -= no_of_bits; |
| 1547 | guint8 ui8 = get_masked_bits8(vector, writeIndex, bit_offset, no_of_bits); |
| 1548 | writeIndex -= no_of_bits; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1549 | bitvec_write_field(vector, writeIndex, ui8, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1550 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1551 | |
| 1552 | } |
| 1553 | else |
| 1554 | {/* Maybe we should support more than 8 bits ? */ |
| 1555 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1556 | } |
| 1557 | } |
| 1558 | else |
| 1559 | { |
| 1560 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1561 | } |
| 1562 | |
| 1563 | remaining_bits_len -= no_of_bits; |
| 1564 | bit_offset += no_of_bits; |
| 1565 | pDescr++; |
| 1566 | break; |
| 1567 | } |
| 1568 | |
| 1569 | case CSN_UINT_ARRAY: |
| 1570 | { |
| 1571 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1572 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 1573 | |
| 1574 | if (pDescr->serialize.value != 0) |
| 1575 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 1576 | nCount = *pui16DATA(data, nCount); |
| 1577 | } |
| 1578 | |
| 1579 | if (remaining_bits_len >= no_of_bits) |
| 1580 | { |
| 1581 | remaining_bits_len -= (no_of_bits*nCount); |
| 1582 | if (no_of_bits <= 8) |
| 1583 | { |
| 1584 | pui8 = pui8DATA(data, pDescr->offset); |
| 1585 | do |
| 1586 | { |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1587 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
| 1588 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1589 | pui8++; |
| 1590 | bit_offset += no_of_bits; |
| 1591 | } while (--nCount > 0); |
| 1592 | } |
| 1593 | else if (no_of_bits <= 16) |
| 1594 | { |
| 1595 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 1596 | } |
| 1597 | else if (no_of_bits <= 32) |
| 1598 | { |
| 1599 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 1600 | } |
| 1601 | else |
| 1602 | { |
| 1603 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1604 | } |
| 1605 | } |
| 1606 | else |
| 1607 | { |
| 1608 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1609 | } |
| 1610 | pDescr++; |
| 1611 | break; |
| 1612 | } |
| 1613 | |
| 1614 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 1615 | case CSN_VARIABLE_TARRAY: |
| 1616 | case CSN_TYPE_ARRAY: |
| 1617 | { |
| 1618 | gint16 Status; |
| 1619 | csnStream_t arT = *ar; |
| 1620 | gint16 nCount = pDescr->i; |
| 1621 | guint16 nSize = (guint16)(gint32)pDescr->serialize.value; |
| 1622 | |
| 1623 | pui8 = pui8DATA(data, pDescr->offset); |
| 1624 | if (pDescr->type == CSN_VARIABLE_TARRAY) |
| 1625 | { /* Count specified in field */ |
| 1626 | nCount = *pui8DATA(data, pDescr->i); |
| 1627 | } |
| 1628 | else if (pDescr->type == CSN_VARIABLE_TARRAY_OFFSET) |
| 1629 | { /* Count specified in field */ |
| 1630 | nCount = *pui8DATA(data, pDescr->i); |
| 1631 | /* nCount--; the 1 offset is already taken into account in CSN_UINT_OFFSET */ |
| 1632 | } |
| 1633 | |
| 1634 | while (nCount > 0) |
| 1635 | { /* resulting array of length 0 is possible |
| 1636 | * but no bits shall be read from bitstream |
| 1637 | */ |
| 1638 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1639 | LOGPC(DCSN1, LOGL_NOTICE, "%s : | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1640 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1641 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pui8); |
| 1642 | if (Status >= 0) |
| 1643 | { |
| 1644 | pui8 += nSize; |
| 1645 | remaining_bits_len = arT.remaining_bits_len; |
| 1646 | bit_offset = arT.bit_offset; |
| 1647 | |
| 1648 | } |
| 1649 | else |
| 1650 | { |
| 1651 | return Status; |
| 1652 | } |
| 1653 | nCount--; |
| 1654 | } |
| 1655 | |
| 1656 | pDescr++; |
| 1657 | break; |
| 1658 | } |
| 1659 | |
| 1660 | case CSN_BITMAP: |
| 1661 | { /* bitmap with given length. The result is left aligned! */ |
| 1662 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 1663 | |
| 1664 | if (no_of_bits > 0) |
| 1665 | { |
| 1666 | |
| 1667 | if (no_of_bits <= 32) |
| 1668 | { |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1669 | for(unsigned ib = 0; ib < 4; ib++) |
| 1670 | { |
| 1671 | pui8 = pui8DATA(data, pDescr->offset+ib); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1672 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1673 | LOGPC(DCSN1, LOGL_NOTICE, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1674 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1675 | } |
| 1676 | else if (no_of_bits <= 64) |
| 1677 | { |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1678 | for(unsigned ib = 0; ib < 8; ib++) |
| 1679 | { |
| 1680 | pui8 = pui8DATA(data, pDescr->offset+ib); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1681 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1682 | LOGPC(DCSN1, LOGL_NOTICE, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1683 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1684 | } |
| 1685 | else |
| 1686 | { |
| 1687 | return ProcessError(writeIndex,"csnStreamEncoder NOT IMPLEMENTED", 999, pDescr); |
| 1688 | } |
| 1689 | |
| 1690 | remaining_bits_len -= no_of_bits; |
| 1691 | assert(remaining_bits_len >= 0); |
| 1692 | bit_offset += no_of_bits; |
| 1693 | } |
| 1694 | /* bitmap was successfully extracted or it was empty */ |
| 1695 | |
| 1696 | pDescr++; |
| 1697 | break; |
| 1698 | } |
| 1699 | |
| 1700 | case CSN_TYPE: |
| 1701 | { |
| 1702 | gint16 Status; |
| 1703 | csnStream_t arT = *ar; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1704 | LOGPC(DCSN1, LOGL_NOTICE, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1705 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1706 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1707 | LOGPC(DCSN1, LOGL_NOTICE, " : End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1708 | if (Status >= 0) |
| 1709 | { |
| 1710 | |
| 1711 | remaining_bits_len = arT.remaining_bits_len; |
| 1712 | bit_offset = arT.bit_offset; |
| 1713 | pDescr++; |
| 1714 | } |
| 1715 | else |
| 1716 | { |
| 1717 | /* Has already been processed: ProcessError("csnStreamEncoder", Status, pDescr); */ |
| 1718 | return Status; |
| 1719 | } |
| 1720 | |
| 1721 | break; |
| 1722 | } |
| 1723 | |
| 1724 | case CSN_CHOICE: |
| 1725 | { |
| 1726 | //gint16 count = pDescr->i; |
| 1727 | guint8 i = 0; |
| 1728 | CSN_ChoiceElement_t* pChoice = (CSN_ChoiceElement_t*) pDescr->descr.ptr; |
| 1729 | |
| 1730 | pui8 = pui8DATA(data, pDescr->offset); |
| 1731 | i = *pui8; |
| 1732 | pChoice += i; |
| 1733 | guint8 no_of_bits = pChoice->bits; |
| 1734 | guint8 value = pChoice->value; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1735 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pChoice->descr.sz , (unsigned)value); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1736 | bitvec_write_field(vector, writeIndex, value, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1737 | |
| 1738 | CSN_DESCR descr[2]; |
| 1739 | gint16 Status; |
| 1740 | csnStream_t arT = *ar; |
| 1741 | |
| 1742 | descr[0] = pChoice->descr; |
| 1743 | memset(&descr[1], 0x00, sizeof(CSN_DESCR)); |
| 1744 | descr[1].type = CSN_END; |
| 1745 | bit_offset += no_of_bits; |
| 1746 | remaining_bits_len -= no_of_bits; |
| 1747 | |
| 1748 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1749 | Status = csnStreamEncoder(&arT, descr, vector, writeIndex, data); |
| 1750 | |
| 1751 | if (Status >= 0) |
| 1752 | { |
| 1753 | remaining_bits_len = arT.remaining_bits_len; |
| 1754 | bit_offset = arT.bit_offset; |
| 1755 | } |
| 1756 | else |
| 1757 | { |
| 1758 | return Status; |
| 1759 | } |
| 1760 | |
| 1761 | pDescr++; |
| 1762 | break; |
| 1763 | } |
| 1764 | |
| 1765 | case CSN_SERIALIZE: |
| 1766 | { |
| 1767 | StreamSerializeFcn_t serialize = pDescr->serialize.fcn; |
| 1768 | csnStream_t arT = *ar; |
| 1769 | gint16 Status = -1; |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 1770 | unsigned lengthIndex; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1771 | |
| 1772 | // store writeIndex for length value (7 bit) |
| 1773 | lengthIndex = writeIndex; |
| 1774 | writeIndex += 7; |
| 1775 | bit_offset += 7; |
| 1776 | remaining_bits_len -= 7; |
| 1777 | arT.direction = 0; |
| 1778 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1779 | Status = serialize(&arT, vector, writeIndex, pvDATA(data, pDescr->offset)); |
| 1780 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1781 | bitvec_write_field(vector, lengthIndex, writeIndex-lengthIndex-7, 7); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1782 | LOGPC(DCSN1, LOGL_NOTICE, "%s length = %u | ", pDescr->sz , (unsigned)(writeIndex-lengthIndex)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1783 | |
| 1784 | if (Status >= 0) |
| 1785 | { |
| 1786 | remaining_bits_len = arT.remaining_bits_len; |
| 1787 | bit_offset = arT.bit_offset; |
| 1788 | pDescr++; |
| 1789 | } |
| 1790 | else |
| 1791 | { |
| 1792 | // Has already been processed: |
| 1793 | return Status; |
| 1794 | } |
| 1795 | |
| 1796 | break; |
| 1797 | } |
| 1798 | |
| 1799 | case CSN_UNION_LH: |
| 1800 | case CSN_UNION: |
| 1801 | { |
| 1802 | gint16 Bits; |
| 1803 | guint8 index; |
| 1804 | gint16 count = pDescr->i; |
| 1805 | const CSN_DESCR* pDescrNext = pDescr; |
| 1806 | |
| 1807 | pDescrNext += count + 1; /* now this is next after the union */ |
| 1808 | if ((count <= 0) || (count > 16)) |
| 1809 | { |
| 1810 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_INVALID_UNION_INDEX, pDescr); |
| 1811 | } |
| 1812 | |
| 1813 | /* Now get the bits to extract the index */ |
| 1814 | Bits = ixBitsTab[count]; |
| 1815 | index = 0; |
| 1816 | |
| 1817 | /* Assign UnionType */ |
| 1818 | pui8 = pui8DATA(data, pDescr->offset); |
| 1819 | //read index from data and write to vector |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1820 | bitvec_write_field(vector, writeIndex, *pui8, Bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1821 | |
| 1822 | //decode index |
| 1823 | writeIndex -= Bits; |
| 1824 | |
| 1825 | while (Bits > 0) |
| 1826 | { |
| 1827 | index <<= 1; |
| 1828 | |
| 1829 | if (CSN_UNION_LH == pDescr->type) |
| 1830 | { |
| 1831 | index |= get_masked_bits8(vector,writeIndex, bit_offset, 1); |
| 1832 | } |
| 1833 | else |
| 1834 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1835 | index |= bitvec_read_field(vector, writeIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1836 | } |
| 1837 | |
| 1838 | remaining_bits_len--; |
| 1839 | bit_offset++; |
| 1840 | Bits--; |
| 1841 | } |
| 1842 | |
| 1843 | writeIndex -= Bits; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1844 | bitvec_write_field(vector, writeIndex, index, Bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1845 | |
| 1846 | |
| 1847 | /* script index to continue on, limited in case we do not have a power of 2 */ |
| 1848 | pDescr += (MIN(index + 1, count)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1849 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)index); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1850 | |
| 1851 | switch (pDescr->type) |
| 1852 | { /* get the right element of the union based on computed index */ |
| 1853 | |
| 1854 | case CSN_BIT: |
| 1855 | { |
| 1856 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1857 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1858 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1859 | remaining_bits_len -= 1; |
| 1860 | bit_offset++; |
| 1861 | pDescr++; |
| 1862 | break; |
| 1863 | } |
| 1864 | |
| 1865 | case CSN_NULL: |
| 1866 | { /* Empty member! */ |
| 1867 | pDescr++; |
| 1868 | break; |
| 1869 | } |
| 1870 | |
| 1871 | case CSN_UINT: |
| 1872 | { |
| 1873 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1874 | if (remaining_bits_len >= no_of_bits) |
| 1875 | { |
| 1876 | remaining_bits_len -= no_of_bits; |
| 1877 | |
| 1878 | if (no_of_bits <= 8) |
| 1879 | { |
| 1880 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1881 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1882 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1883 | } |
| 1884 | else if (no_of_bits <= 16) |
| 1885 | { |
| 1886 | pui16 = pui16DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1887 | bitvec_write_field(vector, writeIndex, *pui16, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1888 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1889 | } |
| 1890 | else if (no_of_bits <= 32) |
| 1891 | { |
| 1892 | pui32 = pui32DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1893 | bitvec_write_field(vector, writeIndex, *pui32, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1894 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1895 | } |
| 1896 | else |
| 1897 | { |
| 1898 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1899 | } |
| 1900 | } |
| 1901 | else |
| 1902 | { |
| 1903 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1904 | } |
| 1905 | |
| 1906 | bit_offset += no_of_bits; |
| 1907 | pDescr++; |
| 1908 | break; |
| 1909 | } |
| 1910 | |
| 1911 | case CSN_UINT_OFFSET: |
| 1912 | { |
| 1913 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1914 | |
| 1915 | if (remaining_bits_len >= no_of_bits) |
| 1916 | { |
| 1917 | if (no_of_bits <= 8) |
| 1918 | { |
| 1919 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1920 | bitvec_write_field(vector, writeIndex, *pui8 - (guint8)pDescr->descr.value, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1921 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)(*pui8 - (guint8)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1922 | } |
| 1923 | else if (no_of_bits <= 16) |
| 1924 | { |
| 1925 | pui16 = pui16DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1926 | bitvec_write_field(vector, writeIndex, *pui16 - (guint16)pDescr->descr.value, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1927 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , (unsigned short)(*pui16 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1928 | } |
| 1929 | else if (no_of_bits <= 32) |
| 1930 | { |
| 1931 | pui32 = pui32DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1932 | bitvec_write_field(vector, writeIndex, *pui32 - (guint16)pDescr->descr.value, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1933 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , (unsigned int)(*pui32 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1934 | } |
| 1935 | else |
| 1936 | { |
| 1937 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1938 | } |
| 1939 | } |
| 1940 | else |
| 1941 | { |
| 1942 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1943 | } |
| 1944 | |
| 1945 | remaining_bits_len -= no_of_bits; |
| 1946 | bit_offset += no_of_bits; |
| 1947 | pDescr++; |
| 1948 | break; |
| 1949 | } |
| 1950 | |
| 1951 | case CSN_UINT_LH: |
| 1952 | { |
| 1953 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1954 | |
| 1955 | if (remaining_bits_len >= no_of_bits) |
| 1956 | { |
| 1957 | remaining_bits_len -= no_of_bits; |
| 1958 | if (no_of_bits <= 8) |
| 1959 | { |
| 1960 | pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1961 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1962 | // TODO : Change get_masked_bits8() |
| 1963 | writeIndex -= no_of_bits; |
| 1964 | guint8 ui8 = get_masked_bits8(vector, writeIndex, bit_offset, no_of_bits); |
| 1965 | writeIndex -= no_of_bits; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 1966 | bitvec_write_field(vector, writeIndex, ui8, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 1967 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1968 | |
| 1969 | } |
| 1970 | else |
| 1971 | {/* Maybe we should support more than 8 bits ? */ |
| 1972 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1973 | } |
| 1974 | } |
| 1975 | else |
| 1976 | { |
| 1977 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1978 | } |
| 1979 | |
| 1980 | remaining_bits_len -= no_of_bits; |
| 1981 | bit_offset += no_of_bits; |
| 1982 | pDescr++; |
| 1983 | break; |
| 1984 | } |
| 1985 | |
| 1986 | case CSN_UINT_ARRAY: |
| 1987 | { |
| 1988 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1989 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 1990 | |
| 1991 | if (pDescr->serialize.value != 0) |
| 1992 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 1993 | nCount = *pui16DATA(data, nCount); |
| 1994 | } |
| 1995 | |
| 1996 | if (remaining_bits_len >= no_of_bits) |
| 1997 | { |
| 1998 | remaining_bits_len -= (no_of_bits*nCount); |
| 1999 | if (no_of_bits <= 8) |
| 2000 | { |
| 2001 | pui8 = pui8DATA(data, pDescr->offset); |
| 2002 | do |
| 2003 | { |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2004 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
| 2005 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2006 | pui8++; |
| 2007 | bit_offset += no_of_bits; |
| 2008 | } while (--nCount > 0); |
| 2009 | } |
| 2010 | else if (no_of_bits <= 16) |
| 2011 | { |
| 2012 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 2013 | } |
| 2014 | else if (no_of_bits <= 32) |
| 2015 | { |
| 2016 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 2017 | } |
| 2018 | else |
| 2019 | { |
| 2020 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 2021 | } |
| 2022 | } |
| 2023 | else |
| 2024 | { |
| 2025 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2026 | } |
| 2027 | pDescr++; |
| 2028 | break; |
| 2029 | } |
| 2030 | |
| 2031 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 2032 | case CSN_VARIABLE_TARRAY: |
| 2033 | case CSN_TYPE_ARRAY: |
| 2034 | { |
| 2035 | gint16 Status; |
| 2036 | csnStream_t arT = *ar; |
| 2037 | gint16 nCount = pDescr->i; |
| 2038 | guint16 nSize = (guint16)(gint32)pDescr->serialize.value; |
| 2039 | |
| 2040 | pui8 = pui8DATA(data, pDescr->offset); |
| 2041 | if (pDescr->type == CSN_VARIABLE_TARRAY) |
| 2042 | { /* Count specified in field */ |
| 2043 | nCount = *pui8DATA(data, pDescr->i); |
| 2044 | } |
| 2045 | else if (pDescr->type == CSN_VARIABLE_TARRAY_OFFSET) |
| 2046 | { /* Count specified in field */ |
| 2047 | nCount = *pui8DATA(data, pDescr->i); |
| 2048 | /* nCount--; the 1 offset is already taken into account in CSN_UINT_OFFSET */ |
| 2049 | } |
| 2050 | |
| 2051 | while (nCount > 0) |
| 2052 | { /* resulting array of length 0 is possible |
| 2053 | * but no bits shall be read from bitstream |
| 2054 | */ |
| 2055 | |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2056 | LOGPC(DCSN1, LOGL_NOTICE, "%s : | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2057 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 2058 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pui8); |
| 2059 | if (Status >= 0) |
| 2060 | { |
| 2061 | pui8 += nSize; |
| 2062 | remaining_bits_len = arT.remaining_bits_len; |
| 2063 | bit_offset = arT.bit_offset; |
| 2064 | } |
| 2065 | else |
| 2066 | { |
| 2067 | return Status; |
| 2068 | } |
| 2069 | nCount--; |
| 2070 | } |
| 2071 | |
| 2072 | pDescr++; |
| 2073 | break; |
| 2074 | } |
| 2075 | |
| 2076 | case CSN_BITMAP: |
| 2077 | { /* bitmap with given length. The result is left aligned! */ |
| 2078 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 2079 | |
| 2080 | if (no_of_bits > 0) |
| 2081 | { |
| 2082 | |
| 2083 | if (no_of_bits <= 32) |
| 2084 | { |
| 2085 | pui32 = pui32DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2086 | bitvec_write_field(vector, writeIndex, *pui32, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2087 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2088 | } |
| 2089 | else if (no_of_bits <= 64) |
| 2090 | { |
| 2091 | pui64 = pui64DATA(data, pDescr->offset); |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2092 | bitvec_write_field(vector, writeIndex, *pui64, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2093 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %d | ", pDescr->sz , *pui64); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2094 | } |
| 2095 | else |
| 2096 | { |
| 2097 | return ProcessError(writeIndex,"csnStreamEncoder NOT IMPLEMENTED", 999, pDescr); |
| 2098 | } |
| 2099 | |
| 2100 | remaining_bits_len -= no_of_bits; |
| 2101 | assert(remaining_bits_len >= 0); |
| 2102 | bit_offset += no_of_bits; |
| 2103 | } |
| 2104 | /* bitmap was successfully extracted or it was empty */ |
| 2105 | |
| 2106 | pDescr++; |
| 2107 | break; |
| 2108 | } |
| 2109 | |
| 2110 | case CSN_TYPE: |
| 2111 | { |
| 2112 | gint16 Status; |
| 2113 | csnStream_t arT = *ar; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2114 | LOGPC(DCSN1, LOGL_NOTICE, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2115 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 2116 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2117 | LOGPC(DCSN1, LOGL_NOTICE, " : End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2118 | if (Status >= 0) |
| 2119 | { |
| 2120 | remaining_bits_len = arT.remaining_bits_len; |
| 2121 | bit_offset = arT.bit_offset; |
| 2122 | pDescr++; |
| 2123 | } |
| 2124 | else |
| 2125 | { |
| 2126 | /* Has already been processed: ProcessError("csnStreamEncoder", Status, pDescr); */ |
| 2127 | return Status; |
| 2128 | } |
| 2129 | |
| 2130 | break; |
| 2131 | } |
| 2132 | |
| 2133 | default: |
| 2134 | { /* descriptions of union elements other than above are illegal */ |
| 2135 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_IN_SCRIPT, pDescr); |
| 2136 | } |
| 2137 | } |
| 2138 | |
| 2139 | pDescr = pDescrNext; |
| 2140 | break; |
| 2141 | } |
| 2142 | |
| 2143 | case CSN_EXIST: |
| 2144 | case CSN_EXIST_LH: |
| 2145 | { |
| 2146 | guint8 fExist; |
| 2147 | unsigned exist = 0; |
| 2148 | pui8 = pui8DATA(data, pDescr->offset); |
| 2149 | exist = *pui8; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2150 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2151 | writeIndex--; |
| 2152 | if (CSN_EXIST_LH == pDescr->type) |
| 2153 | { |
| 2154 | fExist = get_masked_bits8(vector, writeIndex, bit_offset, 1); |
| 2155 | } |
| 2156 | else |
| 2157 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2158 | fExist = bitvec_read_field(vector, writeIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2159 | } |
| 2160 | writeIndex--; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2161 | bitvec_write_field(vector, writeIndex, fExist, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2162 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz, (unsigned)fExist); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2163 | pDescr++; |
| 2164 | remaining_bits_len -= 1; |
| 2165 | |
| 2166 | if (!exist) |
| 2167 | { |
| 2168 | ar->remaining_bits_len = remaining_bits_len; |
| 2169 | ar->bit_offset = bit_offset; |
| 2170 | return remaining_bits_len; |
| 2171 | } |
| 2172 | break; |
| 2173 | } |
| 2174 | |
| 2175 | case CSN_NEXT_EXIST: |
| 2176 | { |
| 2177 | guint8 fExist; |
| 2178 | |
| 2179 | pui8 = pui8DATA(data, pDescr->offset); |
| 2180 | |
| 2181 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL description element */ |
| 2182 | if ((pDescr->descr.ptr != NULL) && (remaining_bits_len == 0)) |
| 2183 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 2184 | |
| 2185 | /* Skip i entries + this entry */ |
| 2186 | pDescr += pDescr->i + 1; |
| 2187 | |
| 2188 | /* pDescr now must be pointing to a CSN_END entry, if not this is an error */ |
| 2189 | if ( pDescr->type != CSN_END ) |
| 2190 | { /* Substract one more bit from remaining_bits_len to make the "not enough bits" error to be triggered */ |
| 2191 | remaining_bits_len--; |
| 2192 | } |
| 2193 | |
| 2194 | break; |
| 2195 | } |
| 2196 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2197 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2198 | fExist = *pui8; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2199 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2200 | remaining_bits_len -= 1; |
| 2201 | |
| 2202 | ++bit_offset; |
| 2203 | |
| 2204 | if (fExist == 0) |
| 2205 | { /* Skip 'i' entries */ |
| 2206 | pDescr += pDescr->i; |
| 2207 | } |
| 2208 | |
| 2209 | pDescr++; |
| 2210 | break; |
| 2211 | } |
| 2212 | |
| 2213 | case CSN_NEXT_EXIST_LH: |
| 2214 | { |
| 2215 | guint8 fExist; |
| 2216 | pui8 = pui8DATA(data, pDescr->offset); |
| 2217 | |
| 2218 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL_LH description element */ |
| 2219 | if ((pDescr->descr.ptr != NULL) && (remaining_bits_len == 0)) |
| 2220 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 2221 | |
| 2222 | /* skip 'i' entries + this entry */ |
| 2223 | pDescr += pDescr->i + 1; |
| 2224 | |
| 2225 | /* pDescr now must be pointing to a CSN_END entry, if not this is an error */ |
| 2226 | if ( pDescr->type != CSN_END ) |
| 2227 | { /* substract one more bit from remaining_bits_len to make the "not enough bits" error to be triggered */ |
| 2228 | remaining_bits_len--; |
| 2229 | } |
| 2230 | |
| 2231 | /* set the data member to "not exist" */ |
| 2232 | //*pui8 = 0; |
| 2233 | break; |
| 2234 | } |
| 2235 | |
| 2236 | /* the "regular" M_NEXT_EXIST_LH description element */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2237 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2238 | writeIndex--; |
| 2239 | fExist = get_masked_bits8(vector,writeIndex, bit_offset, 1); |
| 2240 | writeIndex--; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2241 | bitvec_write_field(vector, writeIndex, fExist, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2242 | pui8++; |
| 2243 | remaining_bits_len -= 1; |
| 2244 | |
| 2245 | bit_offset++; |
| 2246 | |
| 2247 | if (fExist == 0) |
| 2248 | { /* Skip 'i' entries */ |
| 2249 | pDescr += pDescr->i; |
| 2250 | } |
| 2251 | pDescr++; |
| 2252 | |
| 2253 | break; |
| 2254 | } |
| 2255 | |
| 2256 | case CSN_VARIABLE_BITMAP_1: |
| 2257 | { /* Bitmap from here and to the end of message */ |
| 2258 | |
| 2259 | //*pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 2260 | |
| 2261 | /*no break - |
| 2262 | * with a length set we have a regular variable length bitmap so we continue */ |
| 2263 | } |
| 2264 | |
| 2265 | case CSN_VARIABLE_BITMAP: |
| 2266 | { /* {CSN_VARIABLE_BITMAP, 0, offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2267 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 2268 | * Bit array with length (in bits) specified in parameter (pDescr->descr) |
| 2269 | * The result is right aligned! |
| 2270 | */ |
| 2271 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 2272 | |
| 2273 | no_of_bits += pDescr->i; /* adjusted by offset */ |
| 2274 | |
| 2275 | if (no_of_bits > 0) |
| 2276 | { |
| 2277 | remaining_bits_len -= no_of_bits; |
| 2278 | |
| 2279 | if (remaining_bits_len < 0) |
| 2280 | { |
| 2281 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2282 | } |
| 2283 | |
| 2284 | { /* extract bits */ |
| 2285 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 2286 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 2287 | |
| 2288 | if (nB1 > 0) |
| 2289 | { /* take care of the first byte - it will be right aligned */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2290 | bitvec_write_field(vector, writeIndex, *pui8, nB1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2291 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2292 | pui8++; |
| 2293 | no_of_bits -= nB1; |
| 2294 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
| 2295 | } |
| 2296 | |
| 2297 | /* remaining no_of_bits is a multiple of 8 or 0 */ |
| 2298 | while (no_of_bits > 0) |
| 2299 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2300 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2301 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2302 | pui8++; |
| 2303 | no_of_bits -= 8; |
| 2304 | } |
| 2305 | } |
| 2306 | } |
| 2307 | pDescr++; |
| 2308 | break; |
| 2309 | } |
| 2310 | |
| 2311 | case CSN_LEFT_ALIGNED_VAR_BMP_1: |
| 2312 | { /* Bitmap from here and to the end of message */ |
| 2313 | |
| 2314 | //*pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 2315 | |
| 2316 | /* no break - |
| 2317 | * with a length set we have a regular left aligned variable length bitmap so we continue |
| 2318 | */ |
| 2319 | } |
| 2320 | |
| 2321 | case CSN_LEFT_ALIGNED_VAR_BMP: |
| 2322 | { /* {CSN_LEFT_ALIGNED_VAR_BMP, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2323 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 2324 | * bit array with length (in bits) specified in parameter (pDescr->descr) |
| 2325 | */ |
| 2326 | |
| 2327 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value);/* Size of bitmap */ |
| 2328 | |
| 2329 | no_of_bits += pDescr->i;/* size adjusted by offset */ |
| 2330 | |
| 2331 | if (no_of_bits > 0) |
| 2332 | { |
| 2333 | remaining_bits_len -= no_of_bits; |
| 2334 | |
| 2335 | if (remaining_bits_len < 0) |
| 2336 | { |
| 2337 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2338 | } |
| 2339 | |
| 2340 | { /* extract bits */ |
| 2341 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 2342 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 2343 | |
| 2344 | while (no_of_bits > 0) |
| 2345 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2346 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2347 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2348 | pui8++; |
| 2349 | no_of_bits -= 8; |
| 2350 | } |
| 2351 | if (nB1 > 0) |
| 2352 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2353 | bitvec_write_field(vector, writeIndex, *pui8, nB1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2354 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2355 | pui8++; |
| 2356 | no_of_bits -= nB1; |
| 2357 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
| 2358 | } |
| 2359 | } |
| 2360 | |
| 2361 | } |
| 2362 | |
| 2363 | /* bitmap was successfully extracted or it was empty */ |
| 2364 | pDescr++; |
| 2365 | break; |
| 2366 | } |
| 2367 | |
| 2368 | case CSN_VARIABLE_ARRAY: |
| 2369 | { /* {int type; int i; void* descr; int offset; const char* sz; } CSN_DESCR; |
| 2370 | * {CSN_VARIABLE_ARRAY, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2371 | * Array with length specified in parameter: |
| 2372 | * <count: bit (x)> |
| 2373 | * <list: octet(count + offset)> |
| 2374 | */ |
| 2375 | gint16 count = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 2376 | |
| 2377 | count += pDescr->i; /* Adjusted by offset */ |
| 2378 | |
| 2379 | if (count > 0) |
| 2380 | { |
| 2381 | remaining_bits_len -= count * 8; |
| 2382 | |
| 2383 | if (remaining_bits_len < 0) |
| 2384 | { |
| 2385 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2386 | } |
| 2387 | |
| 2388 | pui8 = pui8DATA(data, pDescr->offset); |
| 2389 | |
| 2390 | while (count > 0) |
| 2391 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2392 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2393 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2394 | pui8++; |
| 2395 | bit_offset += 8; |
| 2396 | count--; |
| 2397 | } |
| 2398 | } |
| 2399 | |
| 2400 | pDescr++; |
| 2401 | break; |
| 2402 | } |
| 2403 | |
| 2404 | case CSN_RECURSIVE_ARRAY: |
| 2405 | { /* Recursive way to specify an array: <list> ::= {1 <number: bit (4)> <list> | 0} |
| 2406 | * or more generally: <list> ::= { <tag> <element> <list> | <EndTag> } |
| 2407 | * where <element> ::= bit(value) |
| 2408 | * <tag> ::= 0 | 1 |
| 2409 | * <EndTag> ::= reversed tag i.e. tag == 1 -> EndTag == 0 and vice versa |
| 2410 | * {CSN_RECURSIVE_ARRAY, _BITS, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2411 | * REMARK: recursive way to specify an array but an iterative implementation! |
| 2412 | */ |
| 2413 | gint16 no_of_bits = pDescr->i; |
| 2414 | guint8 ElementCount = 0; |
| 2415 | pui8 = pui8DATA(data, pDescr->offset); |
| 2416 | ElementCount = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 2417 | while (ElementCount > 0) |
| 2418 | { /* tag control shows existence of next list elements */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2419 | bitvec_write_field(vector, writeIndex, Tag, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2420 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)Tag); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2421 | bit_offset++; |
| 2422 | remaining_bits_len--; |
| 2423 | |
| 2424 | /* extract and store no_of_bits long element from bitstream */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2425 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2426 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2427 | pui8++; |
| 2428 | remaining_bits_len -= no_of_bits; |
| 2429 | ElementCount--; |
| 2430 | |
| 2431 | if (remaining_bits_len < 0) |
| 2432 | { |
| 2433 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2434 | } |
| 2435 | |
| 2436 | bit_offset += no_of_bits; |
| 2437 | } |
| 2438 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2439 | bitvec_write_field(vector, writeIndex, !Tag, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2440 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)(!Tag)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2441 | bit_offset++; |
| 2442 | |
| 2443 | pDescr++; |
| 2444 | break; |
| 2445 | } |
| 2446 | |
| 2447 | case CSN_RECURSIVE_TARRAY: |
| 2448 | { /* Recursive way to specify an array of type: <lists> ::= { 1 <type> } ** 0 ; |
| 2449 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
| 2450 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE)} |
| 2451 | */ |
| 2452 | gint16 nSizeElement = (gint16)(gint32)pDescr->serialize.value; |
| 2453 | guint8 ElementCount = 0; |
| 2454 | pui8 = pui8DATA(data, pDescr->offset); |
| 2455 | /* Store the counted number of elements of the array */ |
| 2456 | ElementCount = *pui8DATA(data, (gint16)(gint32)pDescr->i); |
| 2457 | |
| 2458 | while (ElementCount > 0) |
| 2459 | { /* tag control shows existence of next list elements */ |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2460 | bitvec_write_field(vector, writeIndex, Tag, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2461 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)Tag); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2462 | bit_offset++; |
| 2463 | |
| 2464 | remaining_bits_len--; |
| 2465 | ElementCount--; |
| 2466 | |
| 2467 | { /* unpack the following data structure */ |
| 2468 | csnStream_t arT = *ar; |
| 2469 | gint16 Status; |
| 2470 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 2471 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pvDATA(data, pDescr->offset)); |
| 2472 | |
| 2473 | if (Status >= 0) |
| 2474 | { /* successful completion */ |
| 2475 | pui8 += nSizeElement; /* -> to next data element */ |
| 2476 | remaining_bits_len = arT.remaining_bits_len; |
| 2477 | bit_offset = arT.bit_offset; |
| 2478 | } |
| 2479 | else |
| 2480 | { /* something went awry */ |
| 2481 | return Status; |
| 2482 | } |
| 2483 | } |
| 2484 | |
| 2485 | if (remaining_bits_len < 0) |
| 2486 | { |
| 2487 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2488 | } |
| 2489 | } |
| 2490 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2491 | bitvec_write_field(vector, writeIndex, !Tag, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2492 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)(!Tag)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2493 | bit_offset++; |
| 2494 | |
| 2495 | pDescr++; |
| 2496 | break; |
| 2497 | } |
| 2498 | |
| 2499 | case CSN_RECURSIVE_TARRAY_2: |
| 2500 | { /* Recursive way to specify an array of type: <list> ::= <type> { 0 <type> } ** 1 ; */ |
| 2501 | |
| 2502 | Tag = REVERSED_TAG; |
| 2503 | |
| 2504 | /* NO break - |
| 2505 | * handling is exactly the same as for CSN_RECURSIVE_TARRAY_1 so we continue |
| 2506 | */ |
| 2507 | } |
| 2508 | |
| 2509 | case CSN_RECURSIVE_TARRAY_1: |
| 2510 | { /* Recursive way to specify an array of type: <lists> ::= <type> { 1 <type> } ** 0 ; |
| 2511 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
| 2512 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE)} |
| 2513 | */ |
| 2514 | gint16 nSizeElement = (gint16)(gint32)pDescr->serialize.value; |
| 2515 | guint8 ElementCount = 0; |
| 2516 | guint8 ElementNum = 0; |
| 2517 | csnStream_t arT = *ar; |
| 2518 | gint16 Status; |
| 2519 | |
| 2520 | pui8 = pui8DATA(data, pDescr->offset); |
| 2521 | /* Store the count of the array */ |
| 2522 | ElementCount = *pui8DATA(data, pDescr->i); |
| 2523 | ElementNum = ElementCount; |
| 2524 | |
| 2525 | while (ElementCount > 0) |
| 2526 | { /* get data element */ |
| 2527 | if (ElementCount != ElementNum) |
| 2528 | { |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2529 | bitvec_write_field(vector, writeIndex, Tag, 1); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2530 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)Tag); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2531 | bit_offset++; |
| 2532 | remaining_bits_len--; |
| 2533 | } |
| 2534 | ElementCount--; |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2535 | LOGPC(DCSN1, LOGL_NOTICE, "%s { | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2536 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 2537 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2538 | LOGPC(DCSN1, LOGL_NOTICE, "%s } | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2539 | if (Status >= 0) |
| 2540 | { /* successful completion */ |
| 2541 | pui8 += nSizeElement; /* -> to next */ |
| 2542 | remaining_bits_len = arT.remaining_bits_len; |
| 2543 | bit_offset = arT.bit_offset; |
| 2544 | } |
| 2545 | else |
| 2546 | { /* something went awry */ |
| 2547 | return Status; |
| 2548 | } |
| 2549 | |
| 2550 | if (remaining_bits_len < 0) |
| 2551 | { |
| 2552 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2553 | } |
| 2554 | |
| 2555 | } |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2556 | bitvec_write_field(vector, writeIndex, !Tag, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2557 | bit_offset++; |
| 2558 | Tag = STANDARD_TAG; /* in case it was set to "reversed" */ |
| 2559 | pDescr++; |
| 2560 | break; |
| 2561 | } |
| 2562 | |
| 2563 | case CSN_FIXED: |
| 2564 | { /* Verify the fixed bits */ |
| 2565 | guint8 no_of_bits = (guint8) pDescr->i; |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 2566 | bitvec_write_field(vector, writeIndex, pDescr->offset, no_of_bits); |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 2567 | LOGPC(DCSN1, LOGL_NOTICE, "%s = %u | ", pDescr->sz , (unsigned)pDescr->offset); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2568 | remaining_bits_len -= no_of_bits; |
| 2569 | bit_offset += no_of_bits; |
| 2570 | pDescr++; |
| 2571 | break; |
| 2572 | } |
| 2573 | |
| 2574 | case CSN_CALLBACK: |
| 2575 | { |
| 2576 | return ProcessError(writeIndex,"csnStreamEncoder Callback not implemented", -1, pDescr); |
| 2577 | break; |
| 2578 | } |
| 2579 | |
| 2580 | case CSN_TRAP_ERROR: |
| 2581 | { |
| 2582 | return ProcessError(writeIndex,"csnStreamEncoder", pDescr->i, pDescr); |
| 2583 | } |
| 2584 | |
| 2585 | case CSN_END: |
| 2586 | { |
| 2587 | ar->remaining_bits_len = remaining_bits_len; |
| 2588 | ar->bit_offset = bit_offset; |
| 2589 | return remaining_bits_len; |
| 2590 | } |
| 2591 | |
| 2592 | default: |
| 2593 | { |
| 2594 | assert(0); |
| 2595 | } |
| 2596 | |
| 2597 | } |
| 2598 | |
| 2599 | } while (remaining_bits_len >= 0); |
| 2600 | |
| 2601 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2602 | } |
| 2603 | |