Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Copyright (C) 2015 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at: |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | * |
| 17 | ***************************************************************************** |
| 18 | * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| 19 | */ |
| 20 | /*! |
| 21 | *************************************************************************** |
| 22 | * \file ih264d_parse_cavlc.c |
| 23 | * |
| 24 | * \brief |
| 25 | * This file contains UVLC related functions. |
| 26 | * |
| 27 | * \date |
| 28 | * 20/11/2002 |
| 29 | * |
| 30 | * \author NS |
| 31 | *************************************************************************** |
| 32 | */ |
| 33 | |
| 34 | #include <string.h> |
| 35 | #include <stdio.h> |
| 36 | |
| 37 | #include "ih264d_bitstrm.h" |
| 38 | #include "ih264d_parse_cavlc.h" |
| 39 | #include "ih264d_error_handler.h" |
| 40 | #include "ih264d_defs.h" |
| 41 | #include "ih264d_debug.h" |
| 42 | #include "ih264d_cabac.h" |
| 43 | #include "ih264d_structs.h" |
| 44 | #include "ih264d_tables.h" |
| 45 | #include "ih264d_tables.h" |
| 46 | #include "ih264d_mb_utils.h" |
| 47 | |
| 48 | void ih264d_unpack_coeff4x4_dc_4x4blk(tu_sblk4x4_coeff_data_t *ps_tu_4x4, |
| 49 | WORD16 *pi2_out_coeff_data, |
| 50 | UWORD8 *pu1_inv_scan); |
| 51 | |
| 52 | /*****************************************************************************/ |
| 53 | /* */ |
| 54 | /* Function Name : ih264d_uev */ |
| 55 | /* */ |
| 56 | /* Description : Reads the unsigned Exp Golomb codec syntax from the */ |
| 57 | /* ps_bitstrm as specified in section 9.1 of H264 standard */ |
| 58 | /* It also increases bitstream u4_ofst by the number of bits */ |
| 59 | /* parsed for UEV decode operation */ |
| 60 | /* */ |
| 61 | /* Inputs : bitstream base pointer and bitsream u4_ofst in bits */ |
| 62 | /* Globals : None */ |
| 63 | /* Processing : */ |
| 64 | /* Outputs : UEV decoded syntax element and incremented ps_bitstrm u4_ofst */ |
| 65 | /* Returns : UEV decoded syntax element */ |
| 66 | /* */ |
| 67 | /* Issues : Does not check if ps_bitstrm u4_ofst exceeds max ps_bitstrm i4_size */ |
| 68 | /* for performamce. Caller might have to do error resilence */ |
| 69 | /* check for bitstream overflow */ |
| 70 | /* */ |
| 71 | /* Revision History: */ |
| 72 | /* */ |
| 73 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 74 | /* 19 09 2008 Jay Draft */ |
| 75 | /* */ |
| 76 | /*****************************************************************************/ |
| 77 | UWORD32 ih264d_uev(UWORD32 *pu4_bitstrm_ofst, UWORD32 *pu4_bitstrm_buf) |
| 78 | { |
| 79 | UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| 80 | UWORD32 u4_word, u4_ldz; |
| 81 | |
| 82 | /***************************************************************/ |
| 83 | /* Find leading zeros in next 32 bits */ |
| 84 | /***************************************************************/ |
| 85 | NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| 86 | u4_ldz = CLZ(u4_word); |
| 87 | /* Flush the ps_bitstrm */ |
| 88 | u4_bitstream_offset += (u4_ldz + 1); |
| 89 | /* Read the suffix from the ps_bitstrm */ |
| 90 | u4_word = 0; |
| 91 | if(u4_ldz) |
| 92 | GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); |
| 93 | *pu4_bitstrm_ofst = u4_bitstream_offset; |
| 94 | return ((1 << u4_ldz) + u4_word - 1); |
| 95 | } |
| 96 | |
| 97 | /*****************************************************************************/ |
| 98 | /* */ |
| 99 | /* Function Name : ih264d_sev */ |
| 100 | /* */ |
| 101 | /* Description : Reads the signed Exp Golomb codec syntax from the ps_bitstrm */ |
| 102 | /* as specified in section 9.1 of H264 standard. */ |
| 103 | /* It also increases bitstream u4_ofst by the number of bits */ |
| 104 | /* parsed for SEV decode operation */ |
| 105 | /* */ |
| 106 | /* Inputs : bitstream base pointer and bitsream u4_ofst in bits */ |
| 107 | /* Globals : None */ |
| 108 | /* Processing : */ |
| 109 | /* Outputs : SEV decoded syntax element and incremented ps_bitstrm u4_ofst */ |
| 110 | /* Returns : SEV decoded syntax element */ |
| 111 | /* */ |
| 112 | /* Issues : Does not check if ps_bitstrm u4_ofst exceeds max ps_bitstrm i4_size */ |
| 113 | /* for performamce. Caller might have to do error resilence */ |
| 114 | /* check for bitstream overflow */ |
| 115 | /* */ |
| 116 | /* Revision History: */ |
| 117 | /* */ |
| 118 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 119 | /* 19 09 2008 Jay Draft */ |
| 120 | /* */ |
| 121 | /*****************************************************************************/ |
| 122 | WORD32 ih264d_sev(UWORD32 *pu4_bitstrm_ofst, UWORD32 *pu4_bitstrm_buf) |
| 123 | { |
| 124 | UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst; |
| 125 | UWORD32 u4_word, u4_ldz, u4_abs_val; |
| 126 | |
| 127 | /***************************************************************/ |
| 128 | /* Find leading zeros in next 32 bits */ |
| 129 | /***************************************************************/ |
| 130 | NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| 131 | u4_ldz = CLZ(u4_word); |
| 132 | |
| 133 | /* Flush the ps_bitstrm */ |
| 134 | u4_bitstream_offset += (u4_ldz + 1); |
| 135 | |
| 136 | /* Read the suffix from the ps_bitstrm */ |
| 137 | u4_word = 0; |
| 138 | if(u4_ldz) |
| 139 | GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); |
| 140 | |
| 141 | *pu4_bitstrm_ofst = u4_bitstream_offset; |
| 142 | u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1; |
| 143 | |
| 144 | if(u4_word & 0x1) |
| 145 | return (-(WORD32)u4_abs_val); |
| 146 | else |
| 147 | return (u4_abs_val); |
| 148 | } |
| 149 | |
| 150 | /*****************************************************************************/ |
| 151 | /* */ |
| 152 | /* Function Name : get_tev_range_1 */ |
| 153 | /* */ |
| 154 | /* Description : Reads the TEV Exp Golomb codec syntax from the ps_bitstrm */ |
| 155 | /* as specified in section 9.1 of H264 standard. This will */ |
| 156 | /* called only when the input range is 1 for TEV decode. */ |
| 157 | /* If range is more than 1, then UEV decode is done */ |
| 158 | /* */ |
| 159 | /* Inputs : bitstream base pointer and bitsream u4_ofst in bits */ |
| 160 | /* Globals : None */ |
| 161 | /* Processing : */ |
| 162 | /* Outputs : TEV decoded syntax element and incremented ps_bitstrm u4_ofst */ |
| 163 | /* Returns : TEV decoded syntax element */ |
| 164 | /* */ |
| 165 | /* Issues : Does not check if ps_bitstrm u4_ofst exceeds max ps_bitstrm i4_size */ |
| 166 | /* for performamce. Caller might have to do error resilence */ |
| 167 | /* check for bitstream overflow */ |
| 168 | /* */ |
| 169 | /* Revision History: */ |
| 170 | /* */ |
| 171 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 172 | /* 19 09 2008 Jay Draft */ |
| 173 | /* */ |
| 174 | /*****************************************************************************/ |
| 175 | UWORD32 ih264d_tev_range1(UWORD32 *pu4_bitstrm_ofst, UWORD32 *pu4_bitstrm_buf) |
| 176 | { |
| 177 | UWORD32 u4_code; |
| 178 | GETBIT(u4_code, *pu4_bitstrm_ofst, pu4_bitstrm_buf); |
| 179 | return (!u4_code); |
| 180 | } |
| 181 | |
| 182 | /*! |
| 183 | ************************************************************************** |
| 184 | * \if Function name : ih264d_uvlc \endif |
| 185 | * |
| 186 | * \brief |
| 187 | * |
| 188 | * Reads the unsigned/signed/truncated integer Exp-Golomb-coded syntax element |
| 189 | * with the left bit first. The parsing process for this descriptor is specified |
| 190 | * in subclause 9.1. |
| 191 | * |
| 192 | * \param ps_bitstrm : Pointer to Bitstream Structure . |
| 193 | * \param u4_range : Range value in case of Truncated Exp-Golomb-code |
| 194 | * \param pi_bitstrm_ofst : Pointer to the local copy of Bitstream u4_ofst |
| 195 | * \param u1_flag : Flag indicating the case of UEV,SEV or TEV |
| 196 | * \param u4_bitstrm_ofst : Local copy of Bitstream u4_ofst |
| 197 | * \param pu4_bitstrm_buf : Pointer to the Bitstream buffer |
| 198 | * |
| 199 | * \return |
| 200 | * Returns Code Value. |
| 201 | * |
| 202 | ************************************************************************** |
| 203 | */ |
| 204 | |
| 205 | WORD32 ih264d_uvlc(dec_bit_stream_t *ps_bitstrm, |
| 206 | UWORD32 u4_range, |
| 207 | UWORD32 *pi_bitstrm_ofst, |
| 208 | UWORD8 u1_flag, |
| 209 | UWORD32 u4_bitstrm_ofst, |
| 210 | UWORD32 *pu4_bitstrm_buf) |
| 211 | { |
| 212 | UWORD32 word, word2, cur_bit, cur_word, code_val, code_num, clz; |
| 213 | |
| 214 | SWITCHOFFTRACE; |
| 215 | cur_bit = u4_bitstrm_ofst & 0x1F; |
| 216 | cur_word = u4_bitstrm_ofst >> 5; |
| 217 | word = pu4_bitstrm_buf[cur_word]; |
| 218 | word2 = pu4_bitstrm_buf[cur_word + 1]; |
| 219 | |
| 220 | if(cur_bit != 0) |
| 221 | { |
| 222 | word <<= cur_bit; |
| 223 | word2 >>= (32 - cur_bit); |
| 224 | word |= word2; |
| 225 | } |
| 226 | |
| 227 | if(u1_flag == TEV && u4_range == 1) |
| 228 | { |
| 229 | word >>= 31; |
| 230 | word = 1 - word; |
| 231 | (*pi_bitstrm_ofst)++; |
| 232 | ps_bitstrm->u4_ofst = *pi_bitstrm_ofst; |
| 233 | return (WORD32)word; |
| 234 | } |
| 235 | |
| 236 | //finding clz |
| 237 | { |
| 238 | UWORD32 ui32_code, ui32_mask; |
| 239 | |
| 240 | ui32_code = word; |
| 241 | ui32_mask = 0x80000000; |
| 242 | clz = 0; |
| 243 | |
| 244 | /* DSP implements this with LMBD instruction */ |
| 245 | /* so there we don't need to break the loop */ |
| 246 | while(!(ui32_code & ui32_mask)) |
| 247 | { |
| 248 | clz++; |
| 249 | ui32_mask >>= 1; |
| 250 | if(0 == ui32_mask) |
| 251 | break; |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | if(clz == 0) |
| 256 | { |
| 257 | *pi_bitstrm_ofst = *pi_bitstrm_ofst + (2 * clz) + 1; |
| 258 | ps_bitstrm->u4_ofst = *pi_bitstrm_ofst; |
| 259 | return 0; |
| 260 | } |
| 261 | |
| 262 | word <<= (clz + 1); |
| 263 | word >>= (32 - clz); |
| 264 | code_num = (1 << clz) + word - 1; |
| 265 | *pi_bitstrm_ofst = *pi_bitstrm_ofst + (2 * clz) + 1; |
| 266 | ps_bitstrm->u4_ofst = *pi_bitstrm_ofst; |
| 267 | |
| 268 | if(u1_flag == TEV || u1_flag == UEV) |
| 269 | return (WORD32)code_num; |
| 270 | |
| 271 | code_val = (code_num + 1) >> 1; |
| 272 | if(!(code_num & 0x01)) |
| 273 | return -((WORD32)code_val); |
| 274 | return (WORD32)code_val; |
| 275 | |
| 276 | } |
| 277 | |
| 278 | /*****************************************************************************/ |
| 279 | /* */ |
| 280 | /* Function Name : ih264d_cavlc_4x4res_block_totalcoeff_1 */ |
| 281 | /* */ |
| 282 | /* Description : This function does cavlc decoding of 4x4 block residual */ |
| 283 | /* coefficient when total coeff is equal to 1. The parsing */ |
| 284 | /* is done as defined in section 9.2.2 and 9.2.3 of the */ |
| 285 | /* H264 standard. */ |
| 286 | /* */ |
| 287 | /* Inputs : <What inputs does the function take?> */ |
| 288 | /* Globals : <Does it use any global variables?> */ |
| 289 | /* Processing : <Describe how the function operates - include algorithm */ |
| 290 | /* description> */ |
| 291 | /* Outputs : <What does the function produce?> */ |
| 292 | /* Returns : <What does the function return?> */ |
| 293 | /* */ |
| 294 | /* Issues : <List any issues or problems with this function> */ |
| 295 | /* */ |
| 296 | /* Revision History: */ |
| 297 | /* */ |
| 298 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 299 | /* 25 09 2008 Jay Draft */ |
| 300 | /* */ |
| 301 | /*****************************************************************************/ |
| 302 | WORD32 ih264d_cavlc_4x4res_block_totalcoeff_1(UWORD32 u4_isdc, |
| 303 | UWORD32 u4_total_coeff_trail_one, |
| 304 | dec_bit_stream_t *ps_bitstrm) |
| 305 | { |
| 306 | |
| 307 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 308 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 309 | UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF; |
| 310 | WORD32 i2_level; |
| 311 | UWORD32 u4_tot_zero, u4_ldz, u4_scan_pos; |
| 312 | |
| 313 | tu_sblk4x4_coeff_data_t *ps_tu_4x4; |
| 314 | WORD16 *pi2_coeff_data; |
| 315 | dec_struct_t *ps_dec = (dec_struct_t *)ps_bitstrm->pv_codec_handle; |
| 316 | |
| 317 | ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; |
| 318 | ps_tu_4x4->u2_sig_coeff_map = 0; |
| 319 | pi2_coeff_data = &ps_tu_4x4->ai2_level[0]; |
| 320 | |
| 321 | |
| 322 | if(u4_trailing_ones) |
| 323 | { |
| 324 | UWORD32 u4_sign; |
| 325 | /****************************************************************/ |
| 326 | /* Decode Trailing One as in section 9.2.2 */ |
| 327 | /****************************************************************/ |
| 328 | GETBIT(u4_sign, u4_bitstream_offset, pu4_bitstrm_buf); |
| 329 | i2_level = u4_sign ? -1 : 1; |
| 330 | } |
| 331 | else |
| 332 | { |
| 333 | /****************************************************************/ |
| 334 | /* Decoding Level based on prefix and suffix as in 9.2.2 */ |
| 335 | /****************************************************************/ |
| 336 | UWORD32 u4_lev_suffix, u4_lev_suffix_size; |
| 337 | WORD32 u2_lev_code, u2_abs_value; |
| 338 | UWORD32 u4_lev_prefix; |
| 339 | /***************************************************************/ |
| 340 | /* Find leading zeros in next 32 bits */ |
| 341 | /***************************************************************/ |
| 342 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 343 | pu4_bitstrm_buf); |
| 344 | u2_lev_code = (2 + MIN(u4_lev_prefix, 15)); |
| 345 | |
| 346 | if(14 == u4_lev_prefix) |
| 347 | u4_lev_suffix_size = 4; |
| 348 | else if(15 <= u4_lev_prefix) |
| 349 | { |
| 350 | u2_lev_code += 15; |
| 351 | u4_lev_suffix_size = u4_lev_prefix - 3; |
| 352 | } |
| 353 | else |
| 354 | u4_lev_suffix_size = 0; |
| 355 | |
| 356 | //HP_LEVEL_PREFIX |
| 357 | if(16 <= u4_lev_prefix) |
| 358 | { |
| 359 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 360 | } |
| 361 | if(u4_lev_suffix_size) |
| 362 | { |
| 363 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 364 | u4_lev_suffix_size); |
| 365 | u2_lev_code += u4_lev_suffix; |
| 366 | } |
| 367 | |
| 368 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 369 | /*********************************************************/ |
| 370 | /* If Level code is odd, level is negative else positive */ |
| 371 | /*********************************************************/ |
| 372 | i2_level = (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 373 | |
| 374 | } |
| 375 | |
| 376 | /****************************************************************/ |
| 377 | /* Decoding total zeros as in section 9.2.3, table 9.7 */ |
| 378 | /****************************************************************/ |
| 379 | FIND_ONE_IN_STREAM_LEN(u4_ldz, u4_bitstream_offset, pu4_bitstrm_buf, 8); |
| 380 | |
| 381 | if(u4_ldz) |
| 382 | { |
| 383 | GETBIT(u4_tot_zero, u4_bitstream_offset, pu4_bitstrm_buf); |
| 384 | u4_tot_zero = (u4_ldz << 1) - u4_tot_zero; |
| 385 | } |
| 386 | else |
| 387 | u4_tot_zero = 0; |
| 388 | |
| 389 | /***********************************************************************/ |
| 390 | /* Inverse scan and store residual coeff. Update the bitstream u4_ofst */ |
| 391 | /***********************************************************************/ |
| 392 | u4_scan_pos = u4_tot_zero + u4_isdc; |
| 393 | if(u4_scan_pos > 15) |
| 394 | return -1; |
| 395 | |
| 396 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 397 | *pi2_coeff_data++ = i2_level; |
| 398 | |
| 399 | |
| 400 | { |
| 401 | WORD32 offset; |
| 402 | offset = (UWORD8 *)pi2_coeff_data - (UWORD8 *)ps_tu_4x4; |
| 403 | offset = ALIGN4(offset); |
| 404 | ps_dec->pv_parse_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_parse_tu_coeff_data + offset); |
| 405 | } |
| 406 | |
| 407 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | /*****************************************************************************/ |
| 412 | /* */ |
| 413 | /* Function Name : ih264d_cavlc_4x4res_block_totalcoeff_2to10 */ |
| 414 | /* */ |
| 415 | /* Description : This function does cavlc decoding of 4x4 block residual */ |
| 416 | /* coefficient when total coeffs are between two and ten */ |
| 417 | /* inclusive. Parsing is done as defined in section 9.2.2 */ |
| 418 | /* and 9.2.3 the H264 standard. */ |
| 419 | /* */ |
| 420 | /* Inputs : <What inputs does the function take?> */ |
| 421 | /* Globals : <Does it use any global variables?> */ |
| 422 | /* Processing : <Describe how the function operates - include algorithm */ |
| 423 | /* description> */ |
| 424 | /* Outputs : <What does the function produce?> */ |
| 425 | /* Returns : <What does the function return?> */ |
| 426 | /* */ |
| 427 | /* Issues : <List any issues or problems with this function> */ |
| 428 | /* */ |
| 429 | /* Revision History: */ |
| 430 | /* */ |
| 431 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 432 | /* 25 09 2008 Jay Draft */ |
| 433 | /* */ |
| 434 | /*****************************************************************************/ |
| 435 | |
| 436 | WORD32 ih264d_cavlc_4x4res_block_totalcoeff_2to10(UWORD32 u4_isdc, |
| 437 | UWORD32 u4_total_coeff_trail_one, /*!<TotalCoefficients<<16+trailingones*/ |
| 438 | dec_bit_stream_t *ps_bitstrm) |
| 439 | { |
| 440 | UWORD32 u4_total_zeroes; |
| 441 | WORD32 i; |
| 442 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 443 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 444 | UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF; |
| 445 | UWORD32 u4_total_coeff = u4_total_coeff_trail_one >> 16; |
Harish Mahendrakar | ef3da4e | 2016-02-17 18:06:36 +0530 | [diff] [blame] | 446 | // To avoid error check at 4x4 level, allocating for 3 extra levels(16+3) |
| 447 | // since u4_trailing_ones can at the max be 3. This will be required when |
| 448 | // u4_total_coeff is less than u4_trailing_ones |
| 449 | WORD16 ai2_level_arr[19]; |
| 450 | WORD16 *i2_level_arr = &ai2_level_arr[3]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 451 | |
| 452 | tu_sblk4x4_coeff_data_t *ps_tu_4x4; |
| 453 | WORD16 *pi2_coeff_data; |
| 454 | dec_struct_t *ps_dec = (dec_struct_t *)ps_bitstrm->pv_codec_handle; |
| 455 | |
| 456 | ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; |
| 457 | ps_tu_4x4->u2_sig_coeff_map = 0; |
| 458 | pi2_coeff_data = &ps_tu_4x4->ai2_level[0]; |
| 459 | |
| 460 | i = u4_total_coeff - 1; |
| 461 | |
| 462 | if(u4_trailing_ones) |
| 463 | { |
| 464 | /*********************************************************************/ |
| 465 | /* Decode Trailing Ones */ |
| 466 | /* read the sign of T1's and put them in level array */ |
| 467 | /*********************************************************************/ |
| 468 | UWORD32 u4_signs, u4_cnt = u4_trailing_ones; |
| 469 | WORD16 (*ppi2_trlone_lkup)[3] = |
| 470 | (WORD16 (*)[3])gai2_ih264d_trailing_one_level; |
| 471 | WORD16 *pi2_trlone_lkup; |
| 472 | |
| 473 | GETBITS(u4_signs, u4_bitstream_offset, pu4_bitstrm_buf, u4_cnt); |
| 474 | |
| 475 | pi2_trlone_lkup = ppi2_trlone_lkup[(1 << u4_cnt) - 2 + u4_signs]; |
| 476 | |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 477 | while(u4_cnt) |
| 478 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 479 | i2_level_arr[i--] = *pi2_trlone_lkup++; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 480 | u4_cnt--; |
| 481 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | /****************************************************************/ |
| 485 | /* Decoding Levels Begins */ |
| 486 | /****************************************************************/ |
| 487 | if(i >= 0) |
| 488 | { |
| 489 | /****************************************************************/ |
| 490 | /* First level is decoded outside the loop as it has lot of */ |
| 491 | /* special cases. */ |
| 492 | /****************************************************************/ |
| 493 | UWORD32 u4_lev_suffix, u4_suffix_len, u4_lev_suffix_size; |
| 494 | WORD32 u2_lev_code, u2_abs_value; |
| 495 | UWORD32 u4_lev_prefix; |
| 496 | |
| 497 | /***************************************************************/ |
| 498 | /* u4_suffix_len = 0, Find leading zeros in next 32 bits */ |
| 499 | /***************************************************************/ |
| 500 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 501 | pu4_bitstrm_buf); |
| 502 | |
| 503 | /*********************************************************/ |
| 504 | /* Special decoding case when trailing ones are 3 */ |
| 505 | /*********************************************************/ |
| 506 | u2_lev_code = MIN(15, u4_lev_prefix); |
| 507 | |
| 508 | u2_lev_code += (3 == u4_trailing_ones) ? 0 : 2; |
| 509 | |
| 510 | if(14 == u4_lev_prefix) |
| 511 | u4_lev_suffix_size = 4; |
| 512 | else if(15 <= u4_lev_prefix) |
| 513 | { |
| 514 | u2_lev_code += 15; |
| 515 | u4_lev_suffix_size = u4_lev_prefix - 3; |
| 516 | } |
| 517 | else |
| 518 | u4_lev_suffix_size = 0; |
| 519 | |
| 520 | //HP_LEVEL_PREFIX |
| 521 | if(16 <= u4_lev_prefix) |
| 522 | { |
| 523 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 524 | } |
| 525 | if(u4_lev_suffix_size) |
| 526 | { |
| 527 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 528 | u4_lev_suffix_size); |
| 529 | u2_lev_code += u4_lev_suffix; |
| 530 | } |
| 531 | |
| 532 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 533 | /*********************************************************/ |
| 534 | /* If Level code is odd, level is negative else positive */ |
| 535 | /*********************************************************/ |
| 536 | i2_level_arr[i--] = (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 537 | |
| 538 | u4_suffix_len = (u2_abs_value > 3) ? 2 : 1; |
| 539 | |
| 540 | /*********************************************************/ |
| 541 | /* Now loop over the remaining levels */ |
| 542 | /*********************************************************/ |
| 543 | while(i >= 0) |
| 544 | { |
| 545 | |
| 546 | /***************************************************************/ |
| 547 | /* Find leading zeros in next 32 bits */ |
| 548 | /***************************************************************/ |
| 549 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 550 | pu4_bitstrm_buf); |
| 551 | |
| 552 | u4_lev_suffix_size = |
| 553 | (15 <= u4_lev_prefix) ? |
| 554 | (u4_lev_prefix - 3) : u4_suffix_len; |
| 555 | |
| 556 | /*********************************************************/ |
| 557 | /* Compute level code using prefix and suffix */ |
| 558 | /*********************************************************/ |
| 559 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 560 | u4_lev_suffix_size); |
| 561 | u2_lev_code = (MIN(15,u4_lev_prefix) << u4_suffix_len) |
| 562 | + u4_lev_suffix; |
| 563 | |
| 564 | //HP_LEVEL_PREFIX |
| 565 | if(16 <= u4_lev_prefix) |
| 566 | { |
| 567 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 568 | } |
| 569 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 570 | |
| 571 | /*********************************************************/ |
| 572 | /* If Level code is odd, level is negative else positive */ |
| 573 | /*********************************************************/ |
| 574 | i2_level_arr[i--] = |
| 575 | (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 576 | |
| 577 | /*********************************************************/ |
| 578 | /* Increment suffix length if required */ |
| 579 | /*********************************************************/ |
| 580 | u4_suffix_len += |
| 581 | (u4_suffix_len < 6) ? |
| 582 | (u2_abs_value |
| 583 | > (3 |
| 584 | << (u4_suffix_len |
| 585 | - 1))) : |
| 586 | 0; |
| 587 | } |
| 588 | |
| 589 | /****************************************************************/ |
| 590 | /* Decoding Levels Ends */ |
| 591 | /****************************************************************/ |
| 592 | } |
| 593 | |
| 594 | /****************************************************************/ |
| 595 | /* Decoding total zeros as in section 9.2.3, table 9.7 */ |
| 596 | /****************************************************************/ |
| 597 | { |
| 598 | UWORD32 u4_index; |
| 599 | const UWORD8 (*ppu1_total_zero_lkup)[64] = |
| 600 | (const UWORD8 (*)[64])gau1_ih264d_table_total_zero_2to10; |
| 601 | |
| 602 | NEXTBITS(u4_index, u4_bitstream_offset, pu4_bitstrm_buf, 6); |
| 603 | u4_total_zeroes = ppu1_total_zero_lkup[u4_total_coeff - 2][u4_index]; |
| 604 | |
| 605 | FLUSHBITS(u4_bitstream_offset, (u4_total_zeroes >> 4)); |
| 606 | u4_total_zeroes &= 0xf; |
| 607 | } |
| 608 | |
| 609 | /**************************************************************/ |
| 610 | /* Decode the runs and form the coefficient buffer */ |
| 611 | /**************************************************************/ |
| 612 | { |
| 613 | const UWORD8 *pu1_table_runbefore; |
| 614 | UWORD32 u4_run; |
| 615 | WORD32 k; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 616 | WORD32 u4_scan_pos = u4_total_coeff + u4_total_zeroes - 1 + u4_isdc; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 617 | WORD32 u4_zeroes_left = u4_total_zeroes; |
| 618 | k = u4_total_coeff - 1; |
| 619 | |
| 620 | /**************************************************************/ |
| 621 | /* Decoding Runs Begin for zeros left > 6 */ |
| 622 | /**************************************************************/ |
| 623 | while((u4_zeroes_left > 6) && k) |
| 624 | { |
| 625 | UWORD32 u4_code; |
| 626 | |
| 627 | NEXTBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 3); |
| 628 | |
| 629 | if(u4_code != 0) |
| 630 | { |
| 631 | FLUSHBITS(u4_bitstream_offset, 3); |
| 632 | u4_run = (7 - u4_code); |
| 633 | } |
| 634 | else |
| 635 | { |
| 636 | |
| 637 | FIND_ONE_IN_STREAM_LEN(u4_code, u4_bitstream_offset, |
| 638 | pu4_bitstrm_buf, 11); |
| 639 | u4_run = (4 + u4_code); |
| 640 | } |
| 641 | |
| 642 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 643 | *pi2_coeff_data++ = i2_level_arr[k--]; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 644 | u4_zeroes_left -= (WORD32)u4_run; |
| 645 | u4_scan_pos -= (WORD32)(u4_run + 1); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 646 | } |
| 647 | |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 648 | if (u4_zeroes_left < 0 || u4_scan_pos < 0) |
| 649 | return -1; |
| 650 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 651 | /**************************************************************/ |
| 652 | /* Decoding Runs for 0 < zeros left <=6 */ |
| 653 | /**************************************************************/ |
| 654 | pu1_table_runbefore = (UWORD8 *)gau1_ih264d_table_run_before; |
| 655 | while((u4_zeroes_left > 0) && k) |
| 656 | { |
| 657 | UWORD32 u4_code; |
| 658 | NEXTBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 3); |
| 659 | |
| 660 | u4_code = pu1_table_runbefore[u4_code + (u4_zeroes_left << 3)]; |
| 661 | u4_run = u4_code >> 2; |
| 662 | |
| 663 | FLUSHBITS(u4_bitstream_offset, (u4_code & 0x03)); |
| 664 | |
| 665 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 666 | *pi2_coeff_data++ = i2_level_arr[k--]; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 667 | u4_zeroes_left -= (WORD32)u4_run; |
| 668 | u4_scan_pos -= (WORD32)(u4_run + 1); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 669 | } |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 670 | if (u4_zeroes_left < 0 || u4_scan_pos < 0) |
| 671 | return -1; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 672 | /**************************************************************/ |
| 673 | /* Decoding Runs End */ |
| 674 | /**************************************************************/ |
| 675 | |
| 676 | /**************************************************************/ |
| 677 | /* Copy the remaining coefficients */ |
| 678 | /**************************************************************/ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 679 | while(k >= 0) |
| 680 | { |
| 681 | |
| 682 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 683 | *pi2_coeff_data++ = i2_level_arr[k--]; |
| 684 | u4_scan_pos--; |
| 685 | } |
| 686 | } |
| 687 | |
| 688 | { |
| 689 | WORD32 offset; |
| 690 | offset = (UWORD8 *)pi2_coeff_data - (UWORD8 *)ps_tu_4x4; |
| 691 | offset = ALIGN4(offset); |
| 692 | ps_dec->pv_parse_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_parse_tu_coeff_data + offset); |
| 693 | } |
| 694 | |
| 695 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 696 | return 0; |
| 697 | } |
| 698 | |
| 699 | /*****************************************************************************/ |
| 700 | /* */ |
| 701 | /* Function Name : ih264d_cavlc_4x4res_block_totalcoeff_11to16 */ |
| 702 | /* */ |
| 703 | /* Description : This function does cavlc decoding of 4x4 block residual */ |
| 704 | /* coefficient when total coeffs are greater than ten. */ |
| 705 | /* Parsing is done as defined in section 9.2.2 and 9.2.3 of */ |
| 706 | /* the H264 standard. */ |
| 707 | /* */ |
| 708 | /* Inputs : <What inputs does the function take?> */ |
| 709 | /* Globals : <Does it use any global variables?> */ |
| 710 | /* Processing : <Describe how the function operates - include algorithm */ |
| 711 | /* description> */ |
| 712 | /* Outputs : <What does the function produce?> */ |
| 713 | /* Returns : <What does the function return?> */ |
| 714 | /* */ |
| 715 | /* Issues : <List any issues or problems with this function> */ |
| 716 | /* */ |
| 717 | /* Revision History: */ |
| 718 | /* */ |
| 719 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 720 | /* 25 09 2008 Jay Draft */ |
| 721 | /* */ |
| 722 | /*****************************************************************************/ |
| 723 | |
| 724 | WORD32 ih264d_cavlc_4x4res_block_totalcoeff_11to16(UWORD32 u4_isdc, |
| 725 | UWORD32 u4_total_coeff_trail_one, /*!<TotalCoefficients<<16+trailingones*/ |
| 726 | dec_bit_stream_t *ps_bitstrm ) |
| 727 | { |
| 728 | UWORD32 u4_total_zeroes; |
| 729 | WORD32 i; |
| 730 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 731 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 732 | UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF; |
| 733 | UWORD32 u4_total_coeff = u4_total_coeff_trail_one >> 16; |
Harish Mahendrakar | ef3da4e | 2016-02-17 18:06:36 +0530 | [diff] [blame] | 734 | // To avoid error check at 4x4 level, allocating for 3 extra levels(16+3) |
| 735 | // since u4_trailing_ones can at the max be 3. This will be required when |
| 736 | // u4_total_coeff is less than u4_trailing_ones |
| 737 | WORD16 ai2_level_arr[19];// |
| 738 | WORD16 *i2_level_arr = &ai2_level_arr[3]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 739 | |
| 740 | tu_sblk4x4_coeff_data_t *ps_tu_4x4; |
| 741 | WORD16 *pi2_coeff_data; |
| 742 | dec_struct_t *ps_dec = (dec_struct_t *)ps_bitstrm->pv_codec_handle; |
| 743 | |
| 744 | ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; |
| 745 | ps_tu_4x4->u2_sig_coeff_map = 0; |
| 746 | pi2_coeff_data = &ps_tu_4x4->ai2_level[0]; |
| 747 | |
| 748 | i = u4_total_coeff - 1; |
| 749 | if(u4_trailing_ones) |
| 750 | { |
| 751 | /*********************************************************************/ |
| 752 | /* Decode Trailing Ones */ |
| 753 | /* read the sign of T1's and put them in level array */ |
| 754 | /*********************************************************************/ |
| 755 | UWORD32 u4_signs, u4_cnt = u4_trailing_ones; |
| 756 | WORD16 (*ppi2_trlone_lkup)[3] = |
| 757 | (WORD16 (*)[3])gai2_ih264d_trailing_one_level; |
| 758 | WORD16 *pi2_trlone_lkup; |
| 759 | |
| 760 | GETBITS(u4_signs, u4_bitstream_offset, pu4_bitstrm_buf, u4_cnt); |
| 761 | |
| 762 | pi2_trlone_lkup = ppi2_trlone_lkup[(1 << u4_cnt) - 2 + u4_signs]; |
| 763 | |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 764 | while(u4_cnt) |
| 765 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 766 | i2_level_arr[i--] = *pi2_trlone_lkup++; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 767 | u4_cnt--; |
| 768 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 769 | } |
| 770 | |
| 771 | /****************************************************************/ |
| 772 | /* Decoding Levels Begins */ |
| 773 | /****************************************************************/ |
| 774 | if(i >= 0) |
| 775 | { |
| 776 | /****************************************************************/ |
| 777 | /* First level is decoded outside the loop as it has lot of */ |
| 778 | /* special cases. */ |
| 779 | /****************************************************************/ |
| 780 | UWORD32 u4_lev_suffix, u4_suffix_len, u4_lev_suffix_size; |
| 781 | UWORD16 u2_lev_code, u2_abs_value; |
| 782 | UWORD32 u4_lev_prefix; |
| 783 | |
| 784 | if(u4_trailing_ones < 3) |
| 785 | { |
| 786 | /*********************************************************/ |
| 787 | /* u4_suffix_len = 1 */ |
| 788 | /*********************************************************/ |
| 789 | /***************************************************************/ |
| 790 | /* Find leading zeros in next 32 bits */ |
| 791 | /***************************************************************/ |
| 792 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 793 | pu4_bitstrm_buf); |
| 794 | |
| 795 | u4_lev_suffix_size = |
| 796 | (15 <= u4_lev_prefix) ? (u4_lev_prefix - 3) : 1; |
| 797 | |
| 798 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 799 | u4_lev_suffix_size); |
| 800 | u2_lev_code = 2 + (MIN(u4_lev_prefix,15) << 1) + u4_lev_suffix; |
| 801 | |
| 802 | //HP_LEVEL_PREFIX |
| 803 | if(16 <= u4_lev_prefix) |
| 804 | { |
| 805 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 806 | } |
| 807 | } |
| 808 | else |
| 809 | { |
| 810 | /*********************************************************/ |
| 811 | /*u4_suffix_len = 0 */ |
| 812 | /*********************************************************/ |
| 813 | /***************************************************************/ |
| 814 | /* Find leading zeros in next 32 bits */ |
| 815 | /***************************************************************/ |
| 816 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 817 | pu4_bitstrm_buf); |
| 818 | |
| 819 | /*********************************************************/ |
| 820 | /* Special decoding case when trailing ones are 3 */ |
| 821 | /*********************************************************/ |
| 822 | u2_lev_code = MIN(15, u4_lev_prefix); |
| 823 | |
| 824 | u2_lev_code += (3 == u4_trailing_ones) ? 0 : (2); |
| 825 | |
| 826 | if(14 == u4_lev_prefix) |
| 827 | u4_lev_suffix_size = 4; |
| 828 | else if(15 <= u4_lev_prefix) |
| 829 | { |
| 830 | u2_lev_code += 15; |
| 831 | u4_lev_suffix_size = (u4_lev_prefix - 3); |
| 832 | } |
| 833 | else |
| 834 | u4_lev_suffix_size = 0; |
| 835 | |
| 836 | //HP_LEVEL_PREFIX |
| 837 | if(16 <= u4_lev_prefix) |
| 838 | { |
| 839 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 840 | } |
| 841 | if(u4_lev_suffix_size) |
| 842 | { |
| 843 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 844 | u4_lev_suffix_size); |
| 845 | u2_lev_code += u4_lev_suffix; |
| 846 | } |
| 847 | } |
| 848 | |
| 849 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 850 | /*********************************************************/ |
| 851 | /* If Level code is odd, level is negative else positive */ |
| 852 | /*********************************************************/ |
| 853 | i2_level_arr[i--] = (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 854 | |
| 855 | u4_suffix_len = (u2_abs_value > 3) ? 2 : 1; |
| 856 | |
| 857 | /*********************************************************/ |
| 858 | /* Now loop over the remaining levels */ |
| 859 | /*********************************************************/ |
| 860 | while(i >= 0) |
| 861 | { |
| 862 | |
| 863 | /***************************************************************/ |
| 864 | /* Find leading zeros in next 32 bits */ |
| 865 | /***************************************************************/ |
| 866 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 867 | pu4_bitstrm_buf); |
| 868 | |
| 869 | u4_lev_suffix_size = |
| 870 | (15 <= u4_lev_prefix) ? |
| 871 | (u4_lev_prefix - 3) : u4_suffix_len; |
| 872 | |
| 873 | /*********************************************************/ |
| 874 | /* Compute level code using prefix and suffix */ |
| 875 | /*********************************************************/ |
| 876 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 877 | u4_lev_suffix_size); |
| 878 | u2_lev_code = (MIN(15,u4_lev_prefix) << u4_suffix_len) |
| 879 | + u4_lev_suffix; |
| 880 | |
| 881 | //HP_LEVEL_PREFIX |
| 882 | if(16 <= u4_lev_prefix) |
| 883 | { |
| 884 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 885 | } |
| 886 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 887 | |
| 888 | /*********************************************************/ |
| 889 | /* If Level code is odd, level is negative else positive */ |
| 890 | /*********************************************************/ |
| 891 | i2_level_arr[i--] = |
| 892 | (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 893 | |
| 894 | /*********************************************************/ |
| 895 | /* Increment suffix length if required */ |
| 896 | /*********************************************************/ |
| 897 | u4_suffix_len += |
| 898 | (u4_suffix_len < 6) ? |
| 899 | (u2_abs_value |
| 900 | > (3 |
| 901 | << (u4_suffix_len |
| 902 | - 1))) : |
| 903 | 0; |
| 904 | } |
| 905 | |
| 906 | /****************************************************************/ |
| 907 | /* Decoding Levels Ends */ |
| 908 | /****************************************************************/ |
| 909 | } |
| 910 | |
| 911 | if(u4_total_coeff < (16 - u4_isdc)) |
| 912 | { |
| 913 | UWORD32 u4_index; |
| 914 | const UWORD8 (*ppu1_total_zero_lkup)[16] = |
| 915 | (const UWORD8 (*)[16])gau1_ih264d_table_total_zero_11to15; |
| 916 | |
| 917 | NEXTBITS(u4_index, u4_bitstream_offset, pu4_bitstrm_buf, 4); |
| 918 | u4_total_zeroes = ppu1_total_zero_lkup[u4_total_coeff - 11][u4_index]; |
| 919 | |
| 920 | FLUSHBITS(u4_bitstream_offset, (u4_total_zeroes >> 4)); |
| 921 | u4_total_zeroes &= 0xf; |
| 922 | } |
| 923 | else |
| 924 | u4_total_zeroes = 0; |
| 925 | |
| 926 | /**************************************************************/ |
| 927 | /* Decode the runs and form the coefficient buffer */ |
| 928 | /**************************************************************/ |
| 929 | { |
| 930 | const UWORD8 *pu1_table_runbefore; |
| 931 | UWORD32 u4_run; |
| 932 | WORD32 k; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 933 | WORD32 u4_scan_pos = u4_total_coeff + u4_total_zeroes - 1 + u4_isdc; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 934 | WORD32 u4_zeroes_left = u4_total_zeroes; |
| 935 | k = u4_total_coeff - 1; |
| 936 | |
| 937 | /**************************************************************/ |
| 938 | /* Decoding Runs for 0 < zeros left <=6 */ |
| 939 | /**************************************************************/ |
| 940 | pu1_table_runbefore = (UWORD8 *)gau1_ih264d_table_run_before; |
| 941 | while((u4_zeroes_left > 0) && k) |
| 942 | { |
| 943 | UWORD32 u4_code; |
| 944 | NEXTBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 3); |
| 945 | |
| 946 | u4_code = pu1_table_runbefore[u4_code + (u4_zeroes_left << 3)]; |
| 947 | u4_run = u4_code >> 2; |
| 948 | |
| 949 | FLUSHBITS(u4_bitstream_offset, (u4_code & 0x03)); |
| 950 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 951 | *pi2_coeff_data++ = i2_level_arr[k--]; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 952 | u4_zeroes_left -= (WORD32)u4_run; |
| 953 | u4_scan_pos -= (WORD32)(u4_run + 1); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 954 | } |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 955 | if (u4_zeroes_left < 0 || u4_scan_pos < 0) |
| 956 | return -1; |
| 957 | |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 958 | /**************************************************************/ |
| 959 | /* Decoding Runs End */ |
| 960 | /**************************************************************/ |
| 961 | |
| 962 | /**************************************************************/ |
| 963 | /* Copy the remaining coefficients */ |
| 964 | /**************************************************************/ |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 965 | while(k >= 0) |
| 966 | { |
| 967 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 968 | *pi2_coeff_data++ = i2_level_arr[k--]; |
| 969 | u4_scan_pos--; |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | { |
| 974 | WORD32 offset; |
| 975 | offset = (UWORD8 *)pi2_coeff_data - (UWORD8 *)ps_tu_4x4; |
| 976 | offset = ALIGN4(offset); |
| 977 | ps_dec->pv_parse_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_parse_tu_coeff_data + offset); |
| 978 | } |
| 979 | |
| 980 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 981 | return 0; |
| 982 | } |
| 983 | |
| 984 | /*****************************************************************************/ |
| 985 | /* */ |
| 986 | /* Function Name : ih264d_rest_of_residual_cav_chroma_dc_block */ |
| 987 | /* */ |
| 988 | /* Description : This function does the Cavlc parsing of the bitstream */ |
| 989 | /* for chroma dc coefficients */ |
| 990 | /* Inputs : <What inputs does the function take?> */ |
| 991 | /* Globals : <Does it use any global variables?> */ |
| 992 | /* Processing : <Describe how the function operates - include algorithm */ |
| 993 | /* description> */ |
| 994 | /* Outputs : <What does the function produce?> */ |
| 995 | /* Returns : <What does the function return?> */ |
| 996 | /* */ |
| 997 | /* Issues : <List any issues or problems with this function> */ |
| 998 | /* */ |
| 999 | /* Revision History: */ |
| 1000 | /* */ |
| 1001 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1002 | /* 15 09 2008 Jay Draft */ |
| 1003 | /* */ |
| 1004 | /*****************************************************************************/ |
| 1005 | void ih264d_rest_of_residual_cav_chroma_dc_block(UWORD32 u4_total_coeff_trail_one, |
| 1006 | dec_bit_stream_t *ps_bitstrm) |
| 1007 | { |
| 1008 | UWORD32 u4_total_zeroes; |
| 1009 | WORD16 i; |
| 1010 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1011 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 1012 | UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF; |
| 1013 | UWORD32 u4_total_coeff = u4_total_coeff_trail_one >> 16; |
Harish Mahendrakar | ef3da4e | 2016-02-17 18:06:36 +0530 | [diff] [blame] | 1014 | // To avoid error check at 4x4 level, allocating for 3 extra levels(4+3) |
| 1015 | // since u4_trailing_ones can at the max be 3. This will be required when |
| 1016 | // u4_total_coeff is less than u4_trailing_ones |
| 1017 | WORD16 ai2_level_arr[7];// |
| 1018 | WORD16 *i2_level_arr = &ai2_level_arr[3]; |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1019 | |
| 1020 | tu_sblk4x4_coeff_data_t *ps_tu_4x4; |
| 1021 | WORD16 *pi2_coeff_data; |
| 1022 | dec_struct_t *ps_dec = (dec_struct_t *)ps_bitstrm->pv_codec_handle; |
| 1023 | |
| 1024 | ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; |
| 1025 | ps_tu_4x4->u2_sig_coeff_map = 0; |
| 1026 | pi2_coeff_data = &ps_tu_4x4->ai2_level[0]; |
| 1027 | |
| 1028 | i = u4_total_coeff - 1; |
| 1029 | if(u4_trailing_ones) |
| 1030 | { |
| 1031 | /*********************************************************************/ |
| 1032 | /* Decode Trailing Ones */ |
| 1033 | /* read the sign of T1's and put them in level array */ |
| 1034 | /*********************************************************************/ |
| 1035 | UWORD32 u4_signs, u4_cnt = u4_trailing_ones; |
| 1036 | WORD16 (*ppi2_trlone_lkup)[3] = |
| 1037 | (WORD16 (*)[3])gai2_ih264d_trailing_one_level; |
| 1038 | WORD16 *pi2_trlone_lkup; |
| 1039 | |
| 1040 | GETBITS(u4_signs, u4_bitstream_offset, pu4_bitstrm_buf, u4_cnt); |
| 1041 | |
| 1042 | pi2_trlone_lkup = ppi2_trlone_lkup[(1 << u4_cnt) - 2 + u4_signs]; |
| 1043 | |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 1044 | while(u4_cnt) |
| 1045 | { |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1046 | i2_level_arr[i--] = *pi2_trlone_lkup++; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 1047 | u4_cnt--; |
| 1048 | } |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1049 | } |
| 1050 | |
| 1051 | /****************************************************************/ |
| 1052 | /* Decoding Levels Begins */ |
| 1053 | /****************************************************************/ |
| 1054 | if(i >= 0) |
| 1055 | { |
| 1056 | /****************************************************************/ |
| 1057 | /* First level is decoded outside the loop as it has lot of */ |
| 1058 | /* special cases. */ |
| 1059 | /****************************************************************/ |
| 1060 | UWORD32 u4_lev_suffix, u4_suffix_len, u4_lev_suffix_size; |
| 1061 | UWORD16 u2_lev_code, u2_abs_value; |
| 1062 | UWORD32 u4_lev_prefix; |
| 1063 | |
| 1064 | /***************************************************************/ |
| 1065 | /* u4_suffix_len = 0, Find leading zeros in next 32 bits */ |
| 1066 | /***************************************************************/ |
| 1067 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 1068 | pu4_bitstrm_buf); |
| 1069 | |
| 1070 | /*********************************************************/ |
| 1071 | /* Special decoding case when trailing ones are 3 */ |
| 1072 | /*********************************************************/ |
| 1073 | u2_lev_code = MIN(15, u4_lev_prefix); |
| 1074 | |
| 1075 | u2_lev_code += (3 == u4_trailing_ones) ? 0 : (2); |
| 1076 | |
| 1077 | if(14 == u4_lev_prefix) |
| 1078 | u4_lev_suffix_size = 4; |
| 1079 | else if(15 <= u4_lev_prefix) |
| 1080 | { |
| 1081 | u2_lev_code += 15; |
| 1082 | u4_lev_suffix_size = u4_lev_prefix - 3; |
| 1083 | } |
| 1084 | else |
| 1085 | u4_lev_suffix_size = 0; |
| 1086 | |
| 1087 | //HP_LEVEL_PREFIX |
| 1088 | if(16 <= u4_lev_prefix) |
| 1089 | { |
| 1090 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 1091 | } |
| 1092 | if(u4_lev_suffix_size) |
| 1093 | { |
| 1094 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 1095 | u4_lev_suffix_size); |
| 1096 | u2_lev_code += u4_lev_suffix; |
| 1097 | } |
| 1098 | |
| 1099 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 1100 | /*********************************************************/ |
| 1101 | /* If Level code is odd, level is negative else positive */ |
| 1102 | /*********************************************************/ |
| 1103 | i2_level_arr[i--] = (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 1104 | |
| 1105 | u4_suffix_len = (u2_abs_value > 3) ? 2 : 1; |
| 1106 | |
| 1107 | /*********************************************************/ |
| 1108 | /* Now loop over the remaining levels */ |
| 1109 | /*********************************************************/ |
| 1110 | while(i >= 0) |
| 1111 | { |
| 1112 | |
| 1113 | /***************************************************************/ |
| 1114 | /* Find leading zeros in next 32 bits */ |
| 1115 | /***************************************************************/ |
| 1116 | FIND_ONE_IN_STREAM_32(u4_lev_prefix, u4_bitstream_offset, |
| 1117 | pu4_bitstrm_buf); |
| 1118 | |
| 1119 | u4_lev_suffix_size = |
| 1120 | (15 <= u4_lev_prefix) ? |
| 1121 | (u4_lev_prefix - 3) : u4_suffix_len; |
| 1122 | |
| 1123 | /*********************************************************/ |
| 1124 | /* Compute level code using prefix and suffix */ |
| 1125 | /*********************************************************/ |
| 1126 | GETBITS(u4_lev_suffix, u4_bitstream_offset, pu4_bitstrm_buf, |
| 1127 | u4_lev_suffix_size); |
| 1128 | u2_lev_code = (MIN(u4_lev_prefix,15) << u4_suffix_len) |
| 1129 | + u4_lev_suffix; |
| 1130 | |
| 1131 | //HP_LEVEL_PREFIX |
| 1132 | if(16 <= u4_lev_prefix) |
| 1133 | { |
| 1134 | u2_lev_code += ((1 << (u4_lev_prefix - 3)) - 4096); |
| 1135 | } |
| 1136 | u2_abs_value = (u2_lev_code + 2) >> 1; |
| 1137 | |
| 1138 | /*********************************************************/ |
| 1139 | /* If Level code is odd, level is negative else positive */ |
| 1140 | /*********************************************************/ |
| 1141 | i2_level_arr[i--] = |
| 1142 | (u2_lev_code & 1) ? -u2_abs_value : u2_abs_value; |
| 1143 | |
| 1144 | /*********************************************************/ |
| 1145 | /* Increment suffix length if required */ |
| 1146 | /*********************************************************/ |
| 1147 | u4_suffix_len += (u2_abs_value > (3 << (u4_suffix_len - 1))); |
| 1148 | } |
| 1149 | |
| 1150 | /****************************************************************/ |
| 1151 | /* Decoding Levels Ends */ |
| 1152 | /****************************************************************/ |
| 1153 | } |
| 1154 | |
| 1155 | if(u4_total_coeff < 4) |
| 1156 | { |
| 1157 | UWORD32 u4_max_ldz = (4 - u4_total_coeff); |
| 1158 | FIND_ONE_IN_STREAM_LEN(u4_total_zeroes, u4_bitstream_offset, |
| 1159 | pu4_bitstrm_buf, u4_max_ldz); |
| 1160 | } |
| 1161 | else |
| 1162 | u4_total_zeroes = 0; |
| 1163 | |
| 1164 | /**************************************************************/ |
| 1165 | /* Decode the runs and form the coefficient buffer */ |
| 1166 | /**************************************************************/ |
| 1167 | { |
| 1168 | const UWORD8 *pu1_table_runbefore; |
| 1169 | UWORD32 u4_run; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 1170 | WORD32 u4_scan_pos = (u4_total_coeff + u4_total_zeroes - 1); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1171 | UWORD32 u4_zeroes_left = u4_total_zeroes; |
| 1172 | i = u4_total_coeff - 1; |
| 1173 | |
| 1174 | /**************************************************************/ |
| 1175 | /* Decoding Runs for 0 < zeros left <=6 */ |
| 1176 | /**************************************************************/ |
| 1177 | pu1_table_runbefore = (UWORD8 *)gau1_ih264d_table_run_before; |
| 1178 | while(u4_zeroes_left && i) |
| 1179 | { |
| 1180 | UWORD32 u4_code; |
| 1181 | NEXTBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 3); |
| 1182 | |
| 1183 | u4_code = pu1_table_runbefore[u4_code + (u4_zeroes_left << 3)]; |
| 1184 | u4_run = u4_code >> 2; |
| 1185 | |
| 1186 | FLUSHBITS(u4_bitstream_offset, (u4_code & 0x03)); |
| 1187 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 1188 | *pi2_coeff_data++ = i2_level_arr[i--]; |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 1189 | u4_zeroes_left -= (WORD32)u4_run; |
| 1190 | u4_scan_pos -= (WORD32)(u4_run + 1); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1191 | } |
| 1192 | /**************************************************************/ |
| 1193 | /* Decoding Runs End */ |
| 1194 | /**************************************************************/ |
| 1195 | |
| 1196 | /**************************************************************/ |
| 1197 | /* Copy the remaining coefficients */ |
| 1198 | /**************************************************************/ |
| 1199 | while(i >= 0) |
| 1200 | { |
| 1201 | SET_BIT(ps_tu_4x4->u2_sig_coeff_map, u4_scan_pos); |
| 1202 | *pi2_coeff_data++ = i2_level_arr[i--]; |
| 1203 | u4_scan_pos--; |
| 1204 | } |
| 1205 | } |
| 1206 | |
| 1207 | { |
| 1208 | WORD32 offset; |
| 1209 | offset = (UWORD8 *)pi2_coeff_data - (UWORD8 *)ps_tu_4x4; |
| 1210 | offset = ALIGN4(offset); |
| 1211 | ps_dec->pv_parse_tu_coeff_data = (void *)((UWORD8 *)ps_dec->pv_parse_tu_coeff_data + offset); |
| 1212 | } |
| 1213 | |
| 1214 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 1215 | } |
| 1216 | |
| 1217 | /*! |
| 1218 | ************************************************************************** |
| 1219 | * \if Function name : CavlcParsingInvScanInvQuant \endif |
| 1220 | * |
| 1221 | * \brief |
| 1222 | * This function do cavlc parsing of coefficient tokens for any block |
| 1223 | * type except chromDc and depending |
| 1224 | * on whenther any coefficients to be parsed calls module |
| 1225 | * RestOfResidualBlockCavlc. |
| 1226 | * |
| 1227 | * \return |
| 1228 | * Returns total number of non-zero coefficients. |
| 1229 | * |
| 1230 | ************************************************************************** |
| 1231 | */ |
| 1232 | |
| 1233 | WORD32 ih264d_cavlc_parse4x4coeff_n0to7(WORD16 *pi2_coeff_block, |
| 1234 | UWORD32 u4_isdc, /* is it a DC block */ |
| 1235 | WORD32 u4_n, |
| 1236 | dec_struct_t *ps_dec, |
| 1237 | UWORD32 *pu4_total_coeff) |
| 1238 | { |
| 1239 | dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm; |
| 1240 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1241 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 1242 | UWORD32 u4_code, u4_index, u4_ldz; |
| 1243 | const UWORD16 *pu2_code = (const UWORD16*)gau2_ih264d_code_gx; |
| 1244 | const UWORD16 *pu2_offset_num_vlc = |
| 1245 | (const UWORD16 *)gau2_ih264d_offset_num_vlc_tab; |
| 1246 | UWORD32 u4_offset_num_vlc = pu2_offset_num_vlc[u4_n]; |
| 1247 | |
| 1248 | |
| 1249 | UNUSED(pi2_coeff_block); |
| 1250 | *pu4_total_coeff = 0; |
| 1251 | FIND_ONE_IN_STREAM_32(u4_ldz, u4_bitstream_offset, pu4_bitstrm_buf); |
| 1252 | NEXTBITS(u4_index, u4_bitstream_offset, pu4_bitstrm_buf, 3); |
| 1253 | u4_index += (u4_ldz << 3); |
| 1254 | u4_index += u4_offset_num_vlc; |
| 1255 | |
| 1256 | u4_index = MIN(u4_index, 303); |
| 1257 | u4_code = pu2_code[u4_index]; |
| 1258 | |
| 1259 | FLUSHBITS(u4_bitstream_offset, (u4_code & 0x03)); |
| 1260 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 1261 | *pu4_total_coeff = (u4_code >> 4); |
| 1262 | |
| 1263 | if(*pu4_total_coeff) |
| 1264 | { |
| 1265 | UWORD32 u4_trailing_ones, u4_offset, u4_total_coeff_tone; |
| 1266 | const UWORD8 *pu1_offset = |
| 1267 | (UWORD8 *)gau1_ih264d_total_coeff_fn_ptr_offset; |
| 1268 | WORD32 ret; |
| 1269 | u4_trailing_ones = ((u4_code >> 2) & 0x03); |
| 1270 | u4_offset = pu1_offset[*pu4_total_coeff - 1]; |
| 1271 | u4_total_coeff_tone = (*pu4_total_coeff << 16) | u4_trailing_ones; |
| 1272 | |
| 1273 | ret = ps_dec->pf_cavlc_4x4res_block[u4_offset](u4_isdc, |
| 1274 | u4_total_coeff_tone, |
| 1275 | ps_bitstrm); |
| 1276 | if(ret != 0) |
| 1277 | return ERROR_CAVLC_NUM_COEFF_T; |
| 1278 | } |
| 1279 | |
| 1280 | return OK; |
| 1281 | } |
| 1282 | |
| 1283 | WORD32 ih264d_cavlc_parse4x4coeff_n8(WORD16 *pi2_coeff_block, |
| 1284 | UWORD32 u4_isdc, /* is it a DC block */ |
| 1285 | WORD32 u4_n, |
| 1286 | dec_struct_t *ps_dec, |
| 1287 | UWORD32 *pu4_total_coeff) |
| 1288 | { |
| 1289 | |
| 1290 | dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm; |
| 1291 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1292 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 1293 | UWORD32 u4_code; |
| 1294 | UNUSED(u4_n); |
| 1295 | UNUSED(pi2_coeff_block); |
| 1296 | GETBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 6); |
| 1297 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 1298 | *pu4_total_coeff = 0; |
| 1299 | |
| 1300 | if(u4_code != 3) |
| 1301 | { |
| 1302 | UWORD8 *pu1_offset = (UWORD8 *)gau1_ih264d_total_coeff_fn_ptr_offset; |
| 1303 | UWORD32 u4_trailing_ones, u4_offset, u4_total_coeff_tone; |
| 1304 | |
| 1305 | *pu4_total_coeff = (u4_code >> 2) + 1; |
| 1306 | u4_trailing_ones = u4_code & 0x03; |
| 1307 | u4_offset = pu1_offset[*pu4_total_coeff - 1]; |
| 1308 | u4_total_coeff_tone = (*pu4_total_coeff << 16) | u4_trailing_ones; |
| 1309 | |
| 1310 | ps_dec->pf_cavlc_4x4res_block[u4_offset](u4_isdc, |
| 1311 | u4_total_coeff_tone, |
| 1312 | ps_bitstrm); |
| 1313 | } |
| 1314 | |
| 1315 | return OK; |
| 1316 | } |
| 1317 | |
| 1318 | /*! |
| 1319 | ************************************************************************** |
| 1320 | * \if Function name : ih264d_cavlc_parse_chroma_dc \endif |
| 1321 | * |
| 1322 | * \brief |
| 1323 | * This function do cavlc parsing of coefficient tokens chromDc block |
| 1324 | * and depending on whenther any coefficients to be parsed calls module |
| 1325 | * ih264d_rest_of_residual_cav_chroma_dc_block. |
| 1326 | * |
| 1327 | * \return |
| 1328 | * Returns total number of non-zero coefficients. |
| 1329 | * |
| 1330 | ************************************************************************** |
| 1331 | */ |
| 1332 | |
| 1333 | void ih264d_cavlc_parse_chroma_dc(dec_mb_info_t *ps_cur_mb_info, |
| 1334 | WORD16 *pi2_coeff_block, |
| 1335 | dec_bit_stream_t *ps_bitstrm, |
| 1336 | UWORD32 u4_scale_u, |
| 1337 | UWORD32 u4_scale_v, |
| 1338 | WORD32 i4_mb_inter_inc) |
| 1339 | { |
| 1340 | UWORD32 u4_total_coeff, u4_trailing_ones, u4_total_coeff_tone, u4_code; |
| 1341 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1342 | UWORD32 u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 1343 | const UWORD8 *pu1_cav_chromdc = (const UWORD8*)gau1_ih264d_cav_chromdc_vld; |
| 1344 | UNUSED(i4_mb_inter_inc); |
| 1345 | /******************************************************************/ |
| 1346 | /* Chroma DC Block for U component */ |
| 1347 | /******************************************************************/ |
| 1348 | NEXTBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 8); |
| 1349 | |
| 1350 | u4_code = pu1_cav_chromdc[u4_code]; |
| 1351 | |
| 1352 | FLUSHBITS(u4_bitstream_offset, ((u4_code & 0x7) + 1)); |
| 1353 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 1354 | |
| 1355 | u4_total_coeff = (u4_code >> 5); |
| 1356 | |
| 1357 | if(u4_total_coeff) |
| 1358 | { |
| 1359 | WORD32 i_z0, i_z1, i_z2, i_z3; |
| 1360 | tu_sblk4x4_coeff_data_t *ps_tu_4x4; |
| 1361 | dec_struct_t *ps_dec = (dec_struct_t *)ps_bitstrm->pv_codec_handle; |
| 1362 | WORD16 ai2_dc_coef[4]; |
| 1363 | UWORD8 pu1_inv_scan[4] = |
| 1364 | { 0, 1, 2, 3 }; |
| 1365 | WORD16 *pi2_coeff_data = |
| 1366 | (WORD16 *)ps_dec->pv_parse_tu_coeff_data; |
| 1367 | |
| 1368 | ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; |
| 1369 | |
| 1370 | u4_trailing_ones = ((u4_code >> 3) & 0x3); |
| 1371 | u4_total_coeff_tone = (u4_total_coeff << 16) | u4_trailing_ones; |
| 1372 | ih264d_rest_of_residual_cav_chroma_dc_block(u4_total_coeff_tone, |
| 1373 | ps_bitstrm); |
| 1374 | |
| 1375 | ai2_dc_coef[0] = 0; |
| 1376 | ai2_dc_coef[1] = 0; |
| 1377 | ai2_dc_coef[2] = 0; |
| 1378 | ai2_dc_coef[3] = 0; |
| 1379 | |
| 1380 | ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, |
| 1381 | ai2_dc_coef, |
| 1382 | pu1_inv_scan); |
| 1383 | /*-------------------------------------------------------------------*/ |
| 1384 | /* Inverse 2x2 transform and scaling of chroma DC */ |
| 1385 | /*-------------------------------------------------------------------*/ |
| 1386 | i_z0 = (ai2_dc_coef[0] + ai2_dc_coef[2]); |
| 1387 | i_z1 = (ai2_dc_coef[0] - ai2_dc_coef[2]); |
| 1388 | i_z2 = (ai2_dc_coef[1] - ai2_dc_coef[3]); |
| 1389 | i_z3 = (ai2_dc_coef[1] + ai2_dc_coef[3]); |
| 1390 | |
| 1391 | /*-----------------------------------------------------------*/ |
| 1392 | /* Scaling and storing the values back */ |
| 1393 | /*-----------------------------------------------------------*/ |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 1394 | *pi2_coeff_data++ = (WORD16)(((i_z0 + i_z3) * (WORD32)u4_scale_u) >> 5); |
| 1395 | *pi2_coeff_data++ = (WORD16)(((i_z0 - i_z3) * (WORD32)u4_scale_u) >> 5); |
| 1396 | *pi2_coeff_data++ = (WORD16)(((i_z1 + i_z2) * (WORD32)u4_scale_u) >> 5); |
| 1397 | *pi2_coeff_data++ = (WORD16)(((i_z1 - i_z2) * (WORD32)u4_scale_u) >> 5); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1398 | |
| 1399 | ps_dec->pv_parse_tu_coeff_data = (void *)pi2_coeff_data; |
| 1400 | |
| 1401 | SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag,1); |
| 1402 | } |
| 1403 | |
| 1404 | /******************************************************************/ |
| 1405 | /* Chroma DC Block for V component */ |
| 1406 | /******************************************************************/ |
| 1407 | pi2_coeff_block += 64; |
| 1408 | u4_bitstream_offset = ps_bitstrm->u4_ofst; |
| 1409 | |
| 1410 | NEXTBITS(u4_code, u4_bitstream_offset, pu4_bitstrm_buf, 8); |
| 1411 | |
| 1412 | u4_code = pu1_cav_chromdc[u4_code]; |
| 1413 | |
| 1414 | FLUSHBITS(u4_bitstream_offset, ((u4_code & 0x7) + 1)); |
| 1415 | ps_bitstrm->u4_ofst = u4_bitstream_offset; |
| 1416 | |
| 1417 | u4_total_coeff = (u4_code >> 5); |
| 1418 | |
| 1419 | if(u4_total_coeff) |
| 1420 | { |
| 1421 | WORD32 i_z0, i_z1, i_z2, i_z3; |
| 1422 | tu_sblk4x4_coeff_data_t *ps_tu_4x4; |
| 1423 | dec_struct_t *ps_dec = (dec_struct_t *)ps_bitstrm->pv_codec_handle; |
| 1424 | WORD16 ai2_dc_coef[4]; |
| 1425 | UWORD8 pu1_inv_scan[4] = |
| 1426 | { 0, 1, 2, 3 }; |
| 1427 | WORD16 *pi2_coeff_data = |
| 1428 | (WORD16 *)ps_dec->pv_parse_tu_coeff_data; |
| 1429 | |
| 1430 | ps_tu_4x4 = (tu_sblk4x4_coeff_data_t *)ps_dec->pv_parse_tu_coeff_data; |
| 1431 | |
| 1432 | u4_trailing_ones = ((u4_code >> 3) & 0x3); |
| 1433 | u4_total_coeff_tone = (u4_total_coeff << 16) | u4_trailing_ones; |
| 1434 | ih264d_rest_of_residual_cav_chroma_dc_block(u4_total_coeff_tone, |
| 1435 | ps_bitstrm); |
| 1436 | |
| 1437 | ai2_dc_coef[0] = 0; |
| 1438 | ai2_dc_coef[1] = 0; |
| 1439 | ai2_dc_coef[2] = 0; |
| 1440 | ai2_dc_coef[3] = 0; |
| 1441 | |
| 1442 | ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, |
| 1443 | ai2_dc_coef, |
| 1444 | pu1_inv_scan); |
| 1445 | |
| 1446 | /*-------------------------------------------------------------------*/ |
| 1447 | /* Inverse 2x2 transform and scaling of chroma DC */ |
| 1448 | /*-------------------------------------------------------------------*/ |
| 1449 | i_z0 = (ai2_dc_coef[0] + ai2_dc_coef[2]); |
| 1450 | i_z1 = (ai2_dc_coef[0] - ai2_dc_coef[2]); |
| 1451 | i_z2 = (ai2_dc_coef[1] - ai2_dc_coef[3]); |
| 1452 | i_z3 = (ai2_dc_coef[1] + ai2_dc_coef[3]); |
| 1453 | |
| 1454 | /*-----------------------------------------------------------*/ |
| 1455 | /* Scaling and storing the values back */ |
| 1456 | /*-----------------------------------------------------------*/ |
Isha Kulkarni | 43dc60e | 2019-01-11 16:48:08 +0530 | [diff] [blame] | 1457 | *pi2_coeff_data++ = (WORD16)(((i_z0 + i_z3) * (WORD32)u4_scale_v) >> 5); |
| 1458 | *pi2_coeff_data++ = (WORD16)(((i_z0 - i_z3) * (WORD32)u4_scale_v) >> 5); |
| 1459 | *pi2_coeff_data++ = (WORD16)(((i_z1 + i_z2) * (WORD32)u4_scale_v) >> 5); |
| 1460 | *pi2_coeff_data++ = (WORD16)(((i_z1 - i_z2) * (WORD32)u4_scale_v) >> 5); |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 1461 | |
| 1462 | ps_dec->pv_parse_tu_coeff_data = (void *)pi2_coeff_data; |
| 1463 | |
| 1464 | SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag,2); |
| 1465 | } |
| 1466 | } |
| 1467 | |
| 1468 | /*****************************************************************************/ |
| 1469 | /* */ |
| 1470 | /* Function Name : ih264d_parse_pmb_ref_index_cavlc_range1 */ |
| 1471 | /* */ |
| 1472 | /* Description : This function does the Cavlc TEV range =1 parsing of */ |
| 1473 | /* reference index for a P MB. Range is 1 when */ |
| 1474 | /* num_ref_idx_active_minus1 is 0 */ |
| 1475 | /* */ |
| 1476 | /* Inputs : <What inputs does the function take?> */ |
| 1477 | /* Globals : <Does it use any global variables?> */ |
| 1478 | /* Processing : <Describe how the function operates - include algorithm */ |
| 1479 | /* description> */ |
| 1480 | /* Outputs : <What does the function produce?> */ |
| 1481 | /* Returns : <What does the function return?> */ |
| 1482 | /* */ |
| 1483 | /* Issues : <List any issues or problems with this function> */ |
| 1484 | /* */ |
| 1485 | /* Revision History: */ |
| 1486 | /* */ |
| 1487 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1488 | /* 19 09 2008 Jay Draft */ |
| 1489 | /* */ |
| 1490 | /*****************************************************************************/ |
| 1491 | void ih264d_parse_pmb_ref_index_cavlc_range1(UWORD32 u4_num_part, /* Number of partitions in MB */ |
| 1492 | dec_bit_stream_t *ps_bitstrm, /* Pointer to bitstream Structure. */ |
| 1493 | WORD8 *pi1_ref_idx, /* pointer to reference index array */ |
| 1494 | UWORD32 u4_num_ref_idx_active_minus1 /* Not used for range 1 */ |
| 1495 | ) |
| 1496 | { |
| 1497 | UWORD32 u4_i; |
| 1498 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1499 | UWORD32 *pu4_bitstream_off = &ps_bitstrm->u4_ofst; |
| 1500 | UNUSED(u4_num_ref_idx_active_minus1); |
| 1501 | for(u4_i = 0; u4_i < u4_num_part; u4_i++) |
| 1502 | { |
| 1503 | UWORD32 u4_ref_idx; |
| 1504 | u4_ref_idx = ih264d_tev_range1(pu4_bitstream_off, pu4_bitstrm_buf); |
| 1505 | |
| 1506 | /* Storing Reference Idx Information */ |
| 1507 | pi1_ref_idx[u4_i] = (WORD8)u4_ref_idx; |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | /*****************************************************************************/ |
| 1512 | /* */ |
| 1513 | /* Function Name : ih264d_parse_pmb_ref_index_cavlc */ |
| 1514 | /* */ |
| 1515 | /* Description : This function does the Cavlc TEV range > 1 parsing of */ |
| 1516 | /* reference index for a P MB. */ |
| 1517 | /* Range > 1 when num_ref_idx_active_minus1 > 0 */ |
| 1518 | /* */ |
| 1519 | /* Inputs : <What inputs does the function take?> */ |
| 1520 | /* Globals : <Does it use any global variables?> */ |
| 1521 | /* Processing : <Describe how the function operates - include algorithm */ |
| 1522 | /* description> */ |
| 1523 | /* Outputs : <What does the function produce?> */ |
| 1524 | /* Returns : <What does the function return?> */ |
| 1525 | /* */ |
| 1526 | /* Issues : <List any issues or problems with this function> */ |
| 1527 | /* */ |
| 1528 | /* Revision History: */ |
| 1529 | /* */ |
| 1530 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1531 | /* 19 09 2008 Jay Draft */ |
| 1532 | /* */ |
| 1533 | /*****************************************************************************/ |
| 1534 | |
| 1535 | WORD32 ih264d_parse_pmb_ref_index_cavlc(UWORD32 u4_num_part, /* Number of partitions in MB */ |
| 1536 | dec_bit_stream_t *ps_bitstrm, /* Pointer to bitstream Structure. */ |
| 1537 | WORD8 *pi1_ref_idx, /* pointer to reference index array */ |
| 1538 | UWORD32 u4_num_ref_idx_active_minus1 /* Number of active references - 1 */ |
| 1539 | ) |
| 1540 | { |
| 1541 | UWORD32 u4_i; |
| 1542 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1543 | UWORD32 *pu4_bitstream_off = &ps_bitstrm->u4_ofst; |
| 1544 | |
| 1545 | for(u4_i = 0; u4_i < u4_num_part; u4_i++) |
| 1546 | { |
| 1547 | UWORD32 u4_ref_idx; |
| 1548 | //Inlined ih264d_uev |
| 1549 | UWORD32 u4_bitstream_offset = *pu4_bitstream_off; |
| 1550 | UWORD32 u4_word, u4_ldz; |
| 1551 | |
| 1552 | /***************************************************************/ |
| 1553 | /* Find leading zeros in next 32 bits */ |
| 1554 | /***************************************************************/ |
| 1555 | NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| 1556 | u4_ldz = CLZ(u4_word); |
| 1557 | /* Flush the ps_bitstrm */ |
| 1558 | u4_bitstream_offset += (u4_ldz + 1); |
| 1559 | /* Read the suffix from the ps_bitstrm */ |
| 1560 | u4_word = 0; |
| 1561 | if(u4_ldz) |
| 1562 | GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); |
| 1563 | *pu4_bitstream_off = u4_bitstream_offset; |
| 1564 | u4_ref_idx = ((1 << u4_ldz) + u4_word - 1); |
| 1565 | //Inlined ih264d_uev |
| 1566 | |
| 1567 | if(u4_ref_idx > u4_num_ref_idx_active_minus1) |
| 1568 | return ERROR_REF_IDX; |
| 1569 | |
| 1570 | /* Storing Reference Idx Information */ |
| 1571 | pi1_ref_idx[u4_i] = (WORD8)u4_ref_idx; |
| 1572 | } |
| 1573 | return OK; |
| 1574 | } |
| 1575 | |
| 1576 | /*****************************************************************************/ |
| 1577 | /* */ |
| 1578 | /* Function Name : ih264d_parse_bmb_ref_index_cavlc_range1 */ |
| 1579 | /* */ |
| 1580 | /* Description : This function does the Cavlc TEV range =1 parsing of */ |
| 1581 | /* reference index for a B MB. Range is 1 when */ |
| 1582 | /* num_ref_idx_active_minus1 is 0 */ |
| 1583 | /* */ |
| 1584 | /* Inputs : <What inputs does the function take?> */ |
| 1585 | /* Globals : <Does it use any global variables?> */ |
| 1586 | /* Processing : <Describe how the function operates - include algorithm */ |
| 1587 | /* description> */ |
| 1588 | /* Outputs : <What does the function produce?> */ |
| 1589 | /* Returns : <What does the function return?> */ |
| 1590 | /* */ |
| 1591 | /* Issues : <List any issues or problems with this function> */ |
| 1592 | /* */ |
| 1593 | /* Revision History: */ |
| 1594 | /* */ |
| 1595 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1596 | /* 19 09 2008 Jay Draft */ |
| 1597 | /* */ |
| 1598 | /*****************************************************************************/ |
| 1599 | void ih264d_parse_bmb_ref_index_cavlc_range1(UWORD32 u4_num_part, /* Number of partitions in MB */ |
| 1600 | dec_bit_stream_t *ps_bitstrm, /* Pointer to bitstream Structure. */ |
| 1601 | WORD8 *pi1_ref_idx, /* pointer to reference index array */ |
| 1602 | UWORD32 u4_num_ref_idx_active_minus1 /* Not used for range 1 */ |
| 1603 | ) |
| 1604 | { |
| 1605 | UWORD32 u4_i; |
| 1606 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1607 | UWORD32 *pu4_bitstream_off = &ps_bitstrm->u4_ofst; |
| 1608 | UNUSED(u4_num_ref_idx_active_minus1); |
| 1609 | for(u4_i = 0; u4_i < u4_num_part; u4_i++) |
| 1610 | { |
| 1611 | if(pi1_ref_idx[u4_i] > -1) |
| 1612 | { |
| 1613 | UWORD32 u4_ref_idx; |
| 1614 | |
| 1615 | u4_ref_idx = ih264d_tev_range1(pu4_bitstream_off, pu4_bitstrm_buf); |
| 1616 | |
| 1617 | /* Storing Reference Idx Information */ |
| 1618 | pi1_ref_idx[u4_i] = (WORD8)u4_ref_idx; |
| 1619 | } |
| 1620 | } |
| 1621 | } |
| 1622 | |
| 1623 | /*****************************************************************************/ |
| 1624 | /* */ |
| 1625 | /* Function Name : ih264d_parse_bmb_ref_index_cavlc */ |
| 1626 | /* */ |
| 1627 | /* Description : This function does the Cavlc TEV range > 1 parsing of */ |
| 1628 | /* reference index for a B MB. */ |
| 1629 | /* Range > 1 when num_ref_idx_active_minus1 > 0 */ |
| 1630 | /* */ |
| 1631 | /* Inputs : <What inputs does the function take?> */ |
| 1632 | /* Globals : <Does it use any global variables?> */ |
| 1633 | /* Processing : <Describe how the function operates - include algorithm */ |
| 1634 | /* description> */ |
| 1635 | /* Outputs : <What does the function produce?> */ |
| 1636 | /* Returns : <What does the function return?> */ |
| 1637 | /* */ |
| 1638 | /* Issues : <List any issues or problems with this function> */ |
| 1639 | /* */ |
| 1640 | /* Revision History: */ |
| 1641 | /* */ |
| 1642 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1643 | /* 19 09 2008 Jay Draft */ |
| 1644 | /* */ |
| 1645 | /*****************************************************************************/ |
| 1646 | WORD32 ih264d_parse_bmb_ref_index_cavlc(UWORD32 u4_num_part, /* Number of partitions in MB */ |
| 1647 | dec_bit_stream_t *ps_bitstrm, /* Pointer to bitstream Structure. */ |
| 1648 | WORD8 *pi1_ref_idx, /* pointer to reference index array */ |
| 1649 | UWORD32 u4_num_ref_idx_active_minus1 /* Number of active references - 1 */ |
| 1650 | ) |
| 1651 | { |
| 1652 | UWORD32 u4_i; |
| 1653 | UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer; |
| 1654 | UWORD32 *pu4_bitstream_off = &ps_bitstrm->u4_ofst; |
| 1655 | |
| 1656 | for(u4_i = 0; u4_i < u4_num_part; u4_i++) |
| 1657 | { |
| 1658 | if(pi1_ref_idx[u4_i] > -1) |
| 1659 | { |
| 1660 | UWORD32 u4_ref_idx; |
| 1661 | //inlining ih264d_uev |
| 1662 | UWORD32 u4_bitstream_offset = *pu4_bitstream_off; |
| 1663 | UWORD32 u4_word, u4_ldz; |
| 1664 | |
| 1665 | /***************************************************************/ |
| 1666 | /* Find leading zeros in next 32 bits */ |
| 1667 | /***************************************************************/ |
| 1668 | NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf); |
| 1669 | u4_ldz = CLZ(u4_word); |
| 1670 | /* Flush the ps_bitstrm */ |
| 1671 | u4_bitstream_offset += (u4_ldz + 1); |
| 1672 | /* Read the suffix from the ps_bitstrm */ |
| 1673 | u4_word = 0; |
| 1674 | if(u4_ldz) |
| 1675 | GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz); |
| 1676 | *pu4_bitstream_off = u4_bitstream_offset; |
| 1677 | u4_ref_idx = ((1 << u4_ldz) + u4_word - 1); |
| 1678 | //inlining ih264d_uev |
| 1679 | if(u4_ref_idx > u4_num_ref_idx_active_minus1) |
| 1680 | return ERROR_REF_IDX; |
| 1681 | |
| 1682 | /* Storing Reference Idx Information */ |
| 1683 | pi1_ref_idx[u4_i] = (WORD8)u4_ref_idx; |
| 1684 | } |
| 1685 | } |
| 1686 | return OK; |
| 1687 | } |
| 1688 | /*****************************************************************************/ |
| 1689 | /* */ |
| 1690 | /* Function Name : ih264d_cavlc_parse_8x8block_both_available */ |
| 1691 | /* */ |
| 1692 | /* Description : This function does the residual parsing of 4 subblocks */ |
| 1693 | /* in a 8x8 block when both top and left are available */ |
| 1694 | /* */ |
| 1695 | /* Inputs : pi2_coeff_block : pointer to residual block where */ |
| 1696 | /* decoded and inverse scan coefficients are updated */ |
| 1697 | /* */ |
| 1698 | /* u4_sub_block_strd : indicates the number of sublocks */ |
| 1699 | /* in a row. It is 4 for luma and 2 for chroma. */ |
| 1700 | /* */ |
| 1701 | /* u4_isdc : required to indicate 4x4 parse modules if the */ |
| 1702 | /* current Mb is I_16x16/chroma DC coded. */ |
| 1703 | /* */ |
| 1704 | /* ps_dec : pointer to Decstruct (decoder context) */ |
| 1705 | /* */ |
| 1706 | /* pu1_top_nnz : top nnz pointer */ |
| 1707 | /* */ |
| 1708 | /* pu1_left_nnz : left nnz pointer */ |
| 1709 | /* */ |
| 1710 | /* Globals : No */ |
| 1711 | /* Processing : Parsing for four subblocks in unrolled, top and left nnz */ |
| 1712 | /* are updated on the fly. csbp is set in accordance to */ |
| 1713 | /* decoded numcoeff for the subblock index in raster order */ |
| 1714 | /* */ |
| 1715 | /* Outputs : The updated residue buffer, nnzs and csbp current block */ |
| 1716 | /* */ |
| 1717 | /* Returns : Returns the coded sub block pattern csbp for the block */ |
| 1718 | /* */ |
| 1719 | /* Issues : <List any issues or problems with this function> */ |
| 1720 | /* */ |
| 1721 | /* Revision History: */ |
| 1722 | /* */ |
| 1723 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1724 | /* 09 10 2008 Jay Draft */ |
| 1725 | /* */ |
| 1726 | /*****************************************************************************/ |
| 1727 | WORD32 ih264d_cavlc_parse_8x8block_both_available(WORD16 *pi2_coeff_block, |
| 1728 | UWORD32 u4_sub_block_strd, |
| 1729 | UWORD32 u4_isdc, |
| 1730 | dec_struct_t * ps_dec, |
| 1731 | UWORD8 *pu1_top_nnz, |
| 1732 | UWORD8 *pu1_left_nnz, |
| 1733 | UWORD8 u1_tran_form8x8, |
| 1734 | UWORD8 u1_mb_field_decodingflag, |
| 1735 | UWORD32 *pu4_csbp) |
| 1736 | { |
| 1737 | UWORD32 u4_num_coeff, u4_n, u4_subblock_coded; |
| 1738 | UWORD32 u4_top0, u4_top1; |
| 1739 | UWORD32 *pu4_dummy; |
| 1740 | WORD32 (**pf_cavlc_parse4x4coeff)(WORD16 *pi2_coeff_block, |
| 1741 | UWORD32 u4_isdc, |
| 1742 | WORD32 u4_n, |
| 1743 | struct _DecStruct *ps_dec, |
| 1744 | UWORD32 *pu4_dummy) = |
| 1745 | ps_dec->pf_cavlc_parse4x4coeff; |
| 1746 | UWORD32 u4_idx = 0; |
| 1747 | UWORD8 *puc_temp; |
| 1748 | WORD32 ret; |
| 1749 | |
| 1750 | *pu4_csbp = 0; |
| 1751 | /* need to change the inverse scan matrices here */ |
| 1752 | puc_temp = ps_dec->pu1_inv_scan; |
| 1753 | |
| 1754 | /*------------------------------------------------------*/ |
| 1755 | /* Residual 4x4 decoding: SubBlock 0 */ |
| 1756 | /*------------------------------------------------------*/ |
| 1757 | if(u1_tran_form8x8) |
| 1758 | { |
| 1759 | if(!u1_mb_field_decodingflag) |
| 1760 | { |
| 1761 | ps_dec->pu1_inv_scan = |
| 1762 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[0]; |
| 1763 | } |
| 1764 | else |
| 1765 | { |
| 1766 | ps_dec->pu1_inv_scan = |
| 1767 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[0]; |
| 1768 | } |
| 1769 | } |
| 1770 | u4_n = (pu1_top_nnz[0] + pu1_left_nnz[0] + 1) >> 1; |
| 1771 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 1772 | u4_n, ps_dec, &u4_num_coeff); |
| 1773 | if(ret != OK) |
| 1774 | return ret; |
| 1775 | |
| 1776 | u4_top0 = u4_num_coeff; |
| 1777 | u4_subblock_coded = (u4_num_coeff != 0); |
| 1778 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 1779 | |
| 1780 | /*------------------------------------------------------*/ |
| 1781 | /* Residual 4x4 decoding: SubBlock 1 */ |
| 1782 | /*------------------------------------------------------*/ |
| 1783 | u4_idx++; |
| 1784 | if(u1_tran_form8x8) |
| 1785 | { |
| 1786 | if(!u1_mb_field_decodingflag) |
| 1787 | { |
| 1788 | ps_dec->pu1_inv_scan = |
| 1789 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[1]; |
| 1790 | } |
| 1791 | else |
| 1792 | { |
| 1793 | ps_dec->pu1_inv_scan = |
| 1794 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[1]; |
| 1795 | } |
| 1796 | } |
| 1797 | else |
| 1798 | { |
| 1799 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 1800 | } |
| 1801 | u4_n = (pu1_top_nnz[1] + u4_num_coeff + 1) >> 1; |
| 1802 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 1803 | u4_n, ps_dec, &u4_num_coeff); |
| 1804 | if(ret != OK) |
| 1805 | return ret; |
| 1806 | |
| 1807 | u4_top1 = pu1_left_nnz[0] = u4_num_coeff; |
| 1808 | u4_subblock_coded = (u4_num_coeff != 0); |
| 1809 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 1810 | |
| 1811 | /*------------------------------------------------------*/ |
| 1812 | /* Residual 4x4 decoding: SubBlock 2 */ |
| 1813 | /*------------------------------------------------------*/ |
| 1814 | u4_idx += (u4_sub_block_strd - 1); |
| 1815 | if(u1_tran_form8x8) |
| 1816 | { |
| 1817 | if(!u1_mb_field_decodingflag) |
| 1818 | { |
| 1819 | ps_dec->pu1_inv_scan = |
| 1820 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[2]; |
| 1821 | } |
| 1822 | else |
| 1823 | { |
| 1824 | ps_dec->pu1_inv_scan = |
| 1825 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[2]; |
| 1826 | } |
| 1827 | } |
| 1828 | else |
| 1829 | { |
| 1830 | pi2_coeff_block += ((u4_sub_block_strd - 1) * NUM_COEFFS_IN_4x4BLK); |
| 1831 | } |
| 1832 | u4_n = (u4_top0 + pu1_left_nnz[1] + 1) >> 1; |
| 1833 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 1834 | u4_n, ps_dec, &u4_num_coeff); |
| 1835 | if(ret != OK) |
| 1836 | return ret; |
| 1837 | |
| 1838 | pu1_top_nnz[0] = u4_num_coeff; |
| 1839 | u4_subblock_coded = (u4_num_coeff != 0); |
| 1840 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 1841 | |
| 1842 | /*------------------------------------------------------*/ |
| 1843 | /* Residual 4x4 decoding: SubBlock 3 */ |
| 1844 | /*------------------------------------------------------*/ |
| 1845 | u4_idx++; |
| 1846 | if(u1_tran_form8x8) |
| 1847 | { |
| 1848 | if(!u1_mb_field_decodingflag) |
| 1849 | { |
| 1850 | ps_dec->pu1_inv_scan = |
| 1851 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[3]; |
| 1852 | } |
| 1853 | else |
| 1854 | { |
| 1855 | ps_dec->pu1_inv_scan = |
| 1856 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[3]; |
| 1857 | } |
| 1858 | } |
| 1859 | else |
| 1860 | { |
| 1861 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 1862 | } |
| 1863 | u4_n = (u4_top1 + u4_num_coeff + 1) >> 1; |
| 1864 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 1865 | u4_n, ps_dec, &u4_num_coeff); |
| 1866 | if(ret != OK) |
| 1867 | return ret; |
| 1868 | |
| 1869 | pu1_top_nnz[1] = pu1_left_nnz[1] = u4_num_coeff; |
| 1870 | u4_subblock_coded = (u4_num_coeff != 0); |
| 1871 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 1872 | |
| 1873 | ps_dec->pu1_inv_scan = puc_temp; |
| 1874 | |
| 1875 | return OK; |
| 1876 | } |
| 1877 | |
| 1878 | /*****************************************************************************/ |
| 1879 | /* */ |
| 1880 | /* Function Name : ih264d_cavlc_parse_8x8block_left_available */ |
| 1881 | /* */ |
| 1882 | /* Description : This function does the residual parsing of 4 subblocks */ |
| 1883 | /* in a 8x8 block when only left is available for block */ |
| 1884 | /* */ |
| 1885 | /* Inputs : pi2_coeff_block : pointer to residual block where */ |
| 1886 | /* decoded and inverse scan coefficients are updated */ |
| 1887 | /* */ |
| 1888 | /* u4_sub_block_strd : indicates the number of sublocks */ |
| 1889 | /* in a row. It is 4 for luma and 2 for chroma. */ |
| 1890 | /* */ |
| 1891 | /* u4_isdc : required to indicate 4x4 parse modules if the */ |
| 1892 | /* current Mb is I_16x16/chroma DC coded. */ |
| 1893 | /* */ |
| 1894 | /* ps_dec : pointer to Decstruct (decoder context) */ |
| 1895 | /* */ |
| 1896 | /* pu1_top_nnz : top nnz pointer */ |
| 1897 | /* */ |
| 1898 | /* pu1_left_nnz : left nnz pointer */ |
| 1899 | /* */ |
| 1900 | /* Globals : No */ |
| 1901 | /* Processing : Parsing for four subblocks in unrolled, top and left nnz */ |
| 1902 | /* are updated on the fly. csbp is set in accordance to */ |
| 1903 | /* decoded numcoeff for the subblock index in raster order */ |
| 1904 | /* */ |
| 1905 | /* Outputs : The updated residue buffer, nnzs and csbp current block */ |
| 1906 | /* */ |
| 1907 | /* Returns : Returns the coded sub block pattern csbp for the block */ |
| 1908 | /* */ |
| 1909 | /* Issues : <List any issues or problems with this function> */ |
| 1910 | /* */ |
| 1911 | /* Revision History: */ |
| 1912 | /* */ |
| 1913 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 1914 | /* 09 10 2008 Jay Draft */ |
| 1915 | /* */ |
| 1916 | /*****************************************************************************/ |
| 1917 | WORD32 ih264d_cavlc_parse_8x8block_left_available(WORD16 *pi2_coeff_block, |
| 1918 | UWORD32 u4_sub_block_strd, |
| 1919 | UWORD32 u4_isdc, |
| 1920 | dec_struct_t * ps_dec, |
| 1921 | UWORD8 *pu1_top_nnz, |
| 1922 | UWORD8 *pu1_left_nnz, |
| 1923 | UWORD8 u1_tran_form8x8, |
| 1924 | UWORD8 u1_mb_field_decodingflag, |
| 1925 | UWORD32 *pu4_csbp) |
| 1926 | { |
| 1927 | UWORD32 u4_num_coeff, u4_n, u4_subblock_coded; |
| 1928 | UWORD32 u4_top0, u4_top1; |
| 1929 | UWORD32 *pu4_dummy; |
| 1930 | WORD32 (**pf_cavlc_parse4x4coeff)(WORD16 *pi2_coeff_block, |
| 1931 | UWORD32 u4_isdc, |
| 1932 | WORD32 u4_n, |
| 1933 | struct _DecStruct *ps_dec, |
| 1934 | UWORD32 *pu4_dummy) = |
| 1935 | ps_dec->pf_cavlc_parse4x4coeff; |
| 1936 | UWORD32 u4_idx = 0; |
| 1937 | UWORD8 *puc_temp; |
| 1938 | WORD32 ret; |
| 1939 | |
| 1940 | *pu4_csbp = 0; |
| 1941 | puc_temp = ps_dec->pu1_inv_scan; |
| 1942 | |
| 1943 | /*------------------------------------------------------*/ |
| 1944 | /* Residual 4x4 decoding: SubBlock 0 */ |
| 1945 | /*------------------------------------------------------*/ |
| 1946 | if(u1_tran_form8x8) |
| 1947 | { |
| 1948 | if(!u1_mb_field_decodingflag) |
| 1949 | { |
| 1950 | ps_dec->pu1_inv_scan = |
| 1951 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[0]; |
| 1952 | } |
| 1953 | else |
| 1954 | { |
| 1955 | ps_dec->pu1_inv_scan = |
| 1956 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[0]; |
| 1957 | } |
| 1958 | } |
| 1959 | u4_n = pu1_left_nnz[0]; |
| 1960 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 1961 | u4_n, ps_dec, &u4_num_coeff); |
| 1962 | if(ret != OK) |
| 1963 | return ret; |
| 1964 | |
| 1965 | u4_top0 = u4_num_coeff; |
| 1966 | u4_subblock_coded = (u4_num_coeff != 0); |
| 1967 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 1968 | |
| 1969 | /*------------------------------------------------------*/ |
| 1970 | /* Residual 4x4 decoding: SubBlock 1 */ |
| 1971 | /*------------------------------------------------------*/ |
| 1972 | u4_idx++; |
| 1973 | if(u1_tran_form8x8) |
| 1974 | { |
| 1975 | if(!u1_mb_field_decodingflag) |
| 1976 | { |
| 1977 | ps_dec->pu1_inv_scan = |
| 1978 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[1]; |
| 1979 | } |
| 1980 | else |
| 1981 | { |
| 1982 | ps_dec->pu1_inv_scan = |
| 1983 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[1]; |
| 1984 | } |
| 1985 | } |
| 1986 | else |
| 1987 | { |
| 1988 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 1989 | } |
| 1990 | u4_n = u4_num_coeff; |
| 1991 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 1992 | u4_n, ps_dec, &u4_num_coeff); |
| 1993 | if(ret != OK) |
| 1994 | return ret; |
| 1995 | |
| 1996 | u4_top1 = pu1_left_nnz[0] = u4_num_coeff; |
| 1997 | u4_subblock_coded = (u4_num_coeff != 0); |
| 1998 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 1999 | |
| 2000 | /*------------------------------------------------------*/ |
| 2001 | /* Residual 4x4 decoding: SubBlock 2 */ |
| 2002 | /*------------------------------------------------------*/ |
| 2003 | u4_idx += (u4_sub_block_strd - 1); |
| 2004 | if(u1_tran_form8x8) |
| 2005 | { |
| 2006 | if(!u1_mb_field_decodingflag) |
| 2007 | { |
| 2008 | ps_dec->pu1_inv_scan = |
| 2009 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[2]; |
| 2010 | } |
| 2011 | else |
| 2012 | { |
| 2013 | ps_dec->pu1_inv_scan = |
| 2014 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[2]; |
| 2015 | } |
| 2016 | } |
| 2017 | else |
| 2018 | { |
| 2019 | pi2_coeff_block += ((u4_sub_block_strd - 1) * NUM_COEFFS_IN_4x4BLK); |
| 2020 | } |
| 2021 | u4_n = (u4_top0 + pu1_left_nnz[1] + 1) >> 1; |
| 2022 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2023 | u4_n, ps_dec, &u4_num_coeff); |
| 2024 | if(ret != OK) |
| 2025 | return ret; |
| 2026 | |
| 2027 | pu1_top_nnz[0] = u4_num_coeff; |
| 2028 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2029 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2030 | |
| 2031 | /*------------------------------------------------------*/ |
| 2032 | /* Residual 4x4 decoding: SubBlock 3 */ |
| 2033 | /*------------------------------------------------------*/ |
| 2034 | u4_idx++; |
| 2035 | if(u1_tran_form8x8) |
| 2036 | { |
| 2037 | if(!u1_mb_field_decodingflag) |
| 2038 | { |
| 2039 | ps_dec->pu1_inv_scan = |
| 2040 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[3]; |
| 2041 | } |
| 2042 | else |
| 2043 | { |
| 2044 | ps_dec->pu1_inv_scan = |
| 2045 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[3]; |
| 2046 | } |
| 2047 | } |
| 2048 | else |
| 2049 | { |
| 2050 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 2051 | } |
| 2052 | u4_n = (u4_top1 + u4_num_coeff + 1) >> 1; |
| 2053 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2054 | u4_n, ps_dec, &u4_num_coeff); |
| 2055 | if(ret != OK) |
| 2056 | return ret; |
| 2057 | |
| 2058 | pu1_top_nnz[1] = pu1_left_nnz[1] = u4_num_coeff; |
| 2059 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2060 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2061 | |
| 2062 | ps_dec->pu1_inv_scan = puc_temp; |
| 2063 | |
| 2064 | return OK; |
| 2065 | } |
| 2066 | |
| 2067 | /*****************************************************************************/ |
| 2068 | /* */ |
| 2069 | /* Function Name : ih264d_cavlc_parse_8x8block_top_available */ |
| 2070 | /* */ |
| 2071 | /* Description : This function does the residual parsing of 4 subblocks */ |
| 2072 | /* in a 8x8 block when only top is available for block */ |
| 2073 | /* */ |
| 2074 | /* Inputs : pi2_coeff_block : pointer to residual block where */ |
| 2075 | /* decoded and inverse scan coefficients are updated */ |
| 2076 | /* */ |
| 2077 | /* u4_sub_block_strd : indicates the number of sublocks */ |
| 2078 | /* in a row. It is 4 for luma and 2 for chroma. */ |
| 2079 | /* */ |
| 2080 | /* u4_isdc : required to indicate 4x4 parse modules if the */ |
| 2081 | /* current Mb is I_16x16/chroma DC coded. */ |
| 2082 | /* */ |
| 2083 | /* ps_dec : pointer to Decstruct (decoder context) */ |
| 2084 | /* */ |
| 2085 | /* pu1_top_nnz : top nnz pointer */ |
| 2086 | /* */ |
| 2087 | /* pu1_left_nnz : left nnz pointer */ |
| 2088 | /* */ |
| 2089 | /* Globals : No */ |
| 2090 | /* Processing : Parsing for four subblocks in unrolled, top and left nnz */ |
| 2091 | /* are updated on the fly. csbp is set in accordance to */ |
| 2092 | /* decoded numcoeff for the subblock index in raster order */ |
| 2093 | /* */ |
| 2094 | /* Outputs : The updated residue buffer, nnzs and csbp current block */ |
| 2095 | /* */ |
| 2096 | /* Returns : Returns the coded sub block pattern csbp for the block */ |
| 2097 | /* */ |
| 2098 | /* Issues : <List any issues or problems with this function> */ |
| 2099 | /* */ |
| 2100 | /* Revision History: */ |
| 2101 | /* */ |
| 2102 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 2103 | /* 09 10 2008 Jay Draft */ |
| 2104 | /* */ |
| 2105 | /*****************************************************************************/ |
| 2106 | WORD32 ih264d_cavlc_parse_8x8block_top_available(WORD16 *pi2_coeff_block, |
| 2107 | UWORD32 u4_sub_block_strd, |
| 2108 | UWORD32 u4_isdc, |
| 2109 | dec_struct_t * ps_dec, |
| 2110 | UWORD8 *pu1_top_nnz, |
| 2111 | UWORD8 *pu1_left_nnz, |
| 2112 | UWORD8 u1_tran_form8x8, |
| 2113 | UWORD8 u1_mb_field_decodingflag, |
| 2114 | UWORD32 *pu4_csbp) |
| 2115 | { |
| 2116 | UWORD32 u4_num_coeff, u4_n, u4_subblock_coded; |
| 2117 | UWORD32 u4_top0, u4_top1; |
| 2118 | UWORD32 *pu4_dummy; |
| 2119 | WORD32 (**pf_cavlc_parse4x4coeff)(WORD16 *pi2_coeff_block, |
| 2120 | UWORD32 u4_isdc, |
| 2121 | WORD32 u4_n, |
| 2122 | struct _DecStruct *ps_dec, |
| 2123 | UWORD32 *pu4_dummy) = |
| 2124 | ps_dec->pf_cavlc_parse4x4coeff; |
| 2125 | UWORD32 u4_idx = 0; |
| 2126 | UWORD8 *puc_temp; |
| 2127 | WORD32 ret; |
| 2128 | |
| 2129 | *pu4_csbp = 0; |
| 2130 | puc_temp = ps_dec->pu1_inv_scan; |
| 2131 | |
| 2132 | /*------------------------------------------------------*/ |
| 2133 | /* Residual 4x4 decoding: SubBlock 0 */ |
| 2134 | /*------------------------------------------------------*/ |
| 2135 | if(u1_tran_form8x8) |
| 2136 | { |
| 2137 | if(!u1_mb_field_decodingflag) |
| 2138 | { |
| 2139 | ps_dec->pu1_inv_scan = |
| 2140 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[0]; |
| 2141 | } |
| 2142 | else |
| 2143 | { |
| 2144 | ps_dec->pu1_inv_scan = |
| 2145 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[0]; |
| 2146 | } |
| 2147 | } |
| 2148 | u4_n = pu1_top_nnz[0]; |
| 2149 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2150 | u4_n, ps_dec, &u4_num_coeff); |
| 2151 | if(ret != OK) |
| 2152 | return ret; |
| 2153 | |
| 2154 | u4_top0 = u4_num_coeff; |
| 2155 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2156 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2157 | |
| 2158 | /*------------------------------------------------------*/ |
| 2159 | /* Residual 4x4 decoding: SubBlock 1 */ |
| 2160 | /*------------------------------------------------------*/ |
| 2161 | u4_idx++; |
| 2162 | if(u1_tran_form8x8) |
| 2163 | { |
| 2164 | if(!u1_mb_field_decodingflag) |
| 2165 | { |
| 2166 | ps_dec->pu1_inv_scan = |
| 2167 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[1]; |
| 2168 | } |
| 2169 | else |
| 2170 | { |
| 2171 | ps_dec->pu1_inv_scan = |
| 2172 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[1]; |
| 2173 | } |
| 2174 | } |
| 2175 | else |
| 2176 | { |
| 2177 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 2178 | } |
| 2179 | u4_n = (pu1_top_nnz[1] + u4_num_coeff + 1) >> 1; |
| 2180 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2181 | u4_n, ps_dec, &u4_num_coeff); |
| 2182 | if(ret != OK) |
| 2183 | return ret; |
| 2184 | |
| 2185 | u4_top1 = pu1_left_nnz[0] = u4_num_coeff; |
| 2186 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2187 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2188 | |
| 2189 | /*------------------------------------------------------*/ |
| 2190 | /* Residual 4x4 decoding: SubBlock 2 */ |
| 2191 | /*------------------------------------------------------*/ |
| 2192 | u4_idx += (u4_sub_block_strd - 1); |
| 2193 | if(u1_tran_form8x8) |
| 2194 | { |
| 2195 | if(!u1_mb_field_decodingflag) |
| 2196 | { |
| 2197 | ps_dec->pu1_inv_scan = |
| 2198 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[2]; |
| 2199 | } |
| 2200 | else |
| 2201 | { |
| 2202 | ps_dec->pu1_inv_scan = |
| 2203 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[2]; |
| 2204 | } |
| 2205 | } |
| 2206 | else |
| 2207 | { |
| 2208 | pi2_coeff_block += ((u4_sub_block_strd - 1) * NUM_COEFFS_IN_4x4BLK); |
| 2209 | } |
| 2210 | u4_n = u4_top0; |
| 2211 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2212 | u4_n, ps_dec, &u4_num_coeff); |
| 2213 | if(ret != OK) |
| 2214 | return ret; |
| 2215 | |
| 2216 | pu1_top_nnz[0] = u4_num_coeff; |
| 2217 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2218 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2219 | |
| 2220 | /*------------------------------------------------------*/ |
| 2221 | /* Residual 4x4 decoding: SubBlock 3 */ |
| 2222 | /*------------------------------------------------------*/ |
| 2223 | u4_idx++; |
| 2224 | if(u1_tran_form8x8) |
| 2225 | { |
| 2226 | if(!u1_mb_field_decodingflag) |
| 2227 | { |
| 2228 | ps_dec->pu1_inv_scan = |
| 2229 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[3]; |
| 2230 | } |
| 2231 | else |
| 2232 | { |
| 2233 | ps_dec->pu1_inv_scan = |
| 2234 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[3]; |
| 2235 | } |
| 2236 | } |
| 2237 | else |
| 2238 | { |
| 2239 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 2240 | } |
| 2241 | u4_n = (u4_top1 + u4_num_coeff + 1) >> 1; |
| 2242 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2243 | u4_n, ps_dec, &u4_num_coeff); |
| 2244 | if(ret != OK) |
| 2245 | return ret; |
| 2246 | |
| 2247 | pu1_top_nnz[1] = pu1_left_nnz[1] = u4_num_coeff; |
| 2248 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2249 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2250 | |
| 2251 | ps_dec->pu1_inv_scan = puc_temp; |
| 2252 | |
| 2253 | return OK; |
| 2254 | } |
| 2255 | |
| 2256 | /*****************************************************************************/ |
| 2257 | /* */ |
| 2258 | /* Function Name : ih264d_cavlc_parse_8x8block_none_available */ |
| 2259 | /* */ |
| 2260 | /* Description : This function does the residual parsing of 4 subblocks */ |
| 2261 | /* in a 8x8 block when none of the neigbours are available */ |
| 2262 | /* */ |
| 2263 | /* Inputs : pi2_coeff_block : pointer to residual block where */ |
| 2264 | /* decoded and inverse scan coefficients are updated */ |
| 2265 | /* */ |
| 2266 | /* u4_sub_block_strd : indicates the number of sublocks */ |
| 2267 | /* in a row. It is 4 for luma and 2 for chroma. */ |
| 2268 | /* */ |
| 2269 | /* u4_isdc : required to indicate 4x4 parse modules if the */ |
| 2270 | /* current Mb is I_16x16/chroma DC coded. */ |
| 2271 | /* */ |
| 2272 | /* ps_dec : pointer to Decstruct (decoder context) */ |
| 2273 | /* */ |
| 2274 | /* pu1_top_nnz : top nnz pointer */ |
| 2275 | /* */ |
| 2276 | /* pu1_left_nnz : left nnz pointer */ |
| 2277 | /* */ |
| 2278 | /* Globals : No */ |
| 2279 | /* Processing : Parsing for four subblocks in unrolled, top and left nnz */ |
| 2280 | /* are updated on the fly. csbp is set in accordance to */ |
| 2281 | /* decoded numcoeff for the subblock index in raster order */ |
| 2282 | /* */ |
| 2283 | /* Outputs : The updated residue buffer, nnzs and csbp current block */ |
| 2284 | /* */ |
| 2285 | /* Returns : Returns the coded sub block pattern csbp for the block */ |
| 2286 | /* */ |
| 2287 | /* Issues : <List any issues or problems with this function> */ |
| 2288 | /* */ |
| 2289 | /* Revision History: */ |
| 2290 | /* */ |
| 2291 | /* DD MM YYYY Author(s) Changes (Describe the changes made) */ |
| 2292 | /* 09 10 2008 Jay Draft */ |
| 2293 | /* */ |
| 2294 | /*****************************************************************************/ |
| 2295 | WORD32 ih264d_cavlc_parse_8x8block_none_available(WORD16 *pi2_coeff_block, |
| 2296 | UWORD32 u4_sub_block_strd, |
| 2297 | UWORD32 u4_isdc, |
| 2298 | dec_struct_t * ps_dec, |
| 2299 | UWORD8 *pu1_top_nnz, |
| 2300 | UWORD8 *pu1_left_nnz, |
| 2301 | UWORD8 u1_tran_form8x8, |
| 2302 | UWORD8 u1_mb_field_decodingflag, |
| 2303 | UWORD32 *pu4_csbp) |
| 2304 | { |
| 2305 | UWORD32 u4_num_coeff, u4_n, u4_subblock_coded; |
| 2306 | UWORD32 u4_top0, u4_top1; |
| 2307 | UWORD32 *pu4_dummy; |
| 2308 | WORD32 (**pf_cavlc_parse4x4coeff)(WORD16 *pi2_coeff_block, |
| 2309 | UWORD32 u4_isdc, |
| 2310 | WORD32 u4_n, |
| 2311 | struct _DecStruct *ps_dec, |
| 2312 | UWORD32 *pu4_dummy) = |
| 2313 | ps_dec->pf_cavlc_parse4x4coeff; |
| 2314 | UWORD32 u4_idx = 0; |
| 2315 | UWORD8 *puc_temp; |
| 2316 | WORD32 ret; |
| 2317 | |
| 2318 | *pu4_csbp = 0; |
| 2319 | puc_temp = ps_dec->pu1_inv_scan; |
| 2320 | |
| 2321 | /*------------------------------------------------------*/ |
| 2322 | /* Residual 4x4 decoding: SubBlock 0 */ |
| 2323 | /*------------------------------------------------------*/ |
| 2324 | if(u1_tran_form8x8) |
| 2325 | { |
| 2326 | if(!u1_mb_field_decodingflag) |
| 2327 | { |
| 2328 | ps_dec->pu1_inv_scan = |
| 2329 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[0]; |
| 2330 | } |
| 2331 | else |
| 2332 | { |
| 2333 | ps_dec->pu1_inv_scan = |
| 2334 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[0]; |
| 2335 | } |
| 2336 | } |
| 2337 | ret = pf_cavlc_parse4x4coeff[0](pi2_coeff_block, u4_isdc, 0, |
| 2338 | ps_dec, &u4_num_coeff); |
| 2339 | if(ret != OK) |
| 2340 | return ret; |
| 2341 | |
| 2342 | u4_top0 = u4_num_coeff; |
| 2343 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2344 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2345 | |
| 2346 | /*------------------------------------------------------*/ |
| 2347 | /* Residual 4x4 decoding: SubBlock 1 */ |
| 2348 | /*------------------------------------------------------*/ |
| 2349 | u4_idx++; |
| 2350 | if(u1_tran_form8x8) |
| 2351 | { |
| 2352 | if(!u1_mb_field_decodingflag) |
| 2353 | { |
| 2354 | ps_dec->pu1_inv_scan = |
| 2355 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[1]; |
| 2356 | } |
| 2357 | else |
| 2358 | { |
| 2359 | ps_dec->pu1_inv_scan = |
| 2360 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[1]; |
| 2361 | } |
| 2362 | } |
| 2363 | else |
| 2364 | { |
| 2365 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 2366 | } |
| 2367 | u4_n = u4_num_coeff; |
| 2368 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2369 | u4_n, ps_dec, &u4_num_coeff); |
| 2370 | if(ret != OK) |
| 2371 | return ret; |
| 2372 | |
| 2373 | u4_top1 = pu1_left_nnz[0] = u4_num_coeff; |
| 2374 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2375 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2376 | |
| 2377 | /*------------------------------------------------------*/ |
| 2378 | /* Residual 4x4 decoding: SubBlock 2 */ |
| 2379 | /*------------------------------------------------------*/ |
| 2380 | u4_idx += (u4_sub_block_strd - 1); |
| 2381 | if(u1_tran_form8x8) |
| 2382 | { |
| 2383 | if(!u1_mb_field_decodingflag) |
| 2384 | { |
| 2385 | ps_dec->pu1_inv_scan = |
| 2386 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[2]; |
| 2387 | } |
| 2388 | else |
| 2389 | { |
| 2390 | ps_dec->pu1_inv_scan = |
| 2391 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[2]; |
| 2392 | } |
| 2393 | } |
| 2394 | else |
| 2395 | { |
| 2396 | pi2_coeff_block += ((u4_sub_block_strd - 1) * NUM_COEFFS_IN_4x4BLK); |
| 2397 | } |
| 2398 | u4_n = u4_top0; |
| 2399 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2400 | u4_n, ps_dec, &u4_num_coeff); |
| 2401 | if(ret != OK) |
| 2402 | return ret; |
| 2403 | |
| 2404 | pu1_top_nnz[0] = u4_num_coeff; |
| 2405 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2406 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2407 | |
| 2408 | /*------------------------------------------------------*/ |
| 2409 | /* Residual 4x4 decoding: SubBlock 3 */ |
| 2410 | /*------------------------------------------------------*/ |
| 2411 | u4_idx++; |
| 2412 | if(u1_tran_form8x8) |
| 2413 | { |
| 2414 | if(!u1_mb_field_decodingflag) |
| 2415 | { |
| 2416 | ps_dec->pu1_inv_scan = |
| 2417 | (UWORD8*)gau1_ih264d_inv_scan_prog8x8_cavlc[3]; |
| 2418 | } |
| 2419 | else |
| 2420 | { |
| 2421 | ps_dec->pu1_inv_scan = |
| 2422 | (UWORD8*)gau1_ih264d_inv_scan_int8x8_cavlc[3]; |
| 2423 | } |
| 2424 | } |
| 2425 | else |
| 2426 | { |
| 2427 | pi2_coeff_block += NUM_COEFFS_IN_4x4BLK; |
| 2428 | } |
| 2429 | u4_n = (u4_top1 + u4_num_coeff + 1) >> 1; |
| 2430 | ret = pf_cavlc_parse4x4coeff[(u4_n > 7)](pi2_coeff_block, u4_isdc, |
| 2431 | u4_n, ps_dec, &u4_num_coeff); |
| 2432 | if(ret != OK) |
| 2433 | return ret; |
| 2434 | |
| 2435 | pu1_top_nnz[1] = pu1_left_nnz[1] = u4_num_coeff; |
| 2436 | u4_subblock_coded = (u4_num_coeff != 0); |
| 2437 | INSERT_BIT(*pu4_csbp, u4_idx, u4_subblock_coded); |
| 2438 | |
| 2439 | ps_dec->pu1_inv_scan = puc_temp; |
| 2440 | |
| 2441 | return OK; |
| 2442 | } |
| 2443 | |
| 2444 | /*! |
| 2445 | ************************************************************************** |
| 2446 | * \if Function name : ih264d_parse_residual4x4_cavlc \endif |
| 2447 | * |
| 2448 | * \brief |
| 2449 | * This function parses CAVLC syntax of a Luma and Chroma AC Residuals. |
| 2450 | * |
| 2451 | * \return |
| 2452 | * 0 on Success and Error code otherwise |
| 2453 | ************************************************************************** |
| 2454 | */ |
| 2455 | |
| 2456 | WORD32 ih264d_parse_residual4x4_cavlc(dec_struct_t * ps_dec, |
| 2457 | dec_mb_info_t *ps_cur_mb_info, |
| 2458 | UWORD8 u1_offset) |
| 2459 | { |
| 2460 | UWORD8 u1_cbp = ps_cur_mb_info->u1_cbp; |
| 2461 | UWORD16 ui16_csbp = 0; |
| 2462 | UWORD32 u4_nbr_avl; |
| 2463 | WORD16 *pi2_residual_buf; |
| 2464 | |
| 2465 | UWORD8 u1_is_top_mb_avail; |
| 2466 | UWORD8 u1_is_left_mb_avail; |
| 2467 | |
| 2468 | UWORD8 *pu1_top_nnz = ps_cur_mb_info->ps_curmb->pu1_nnz_y; |
| 2469 | UWORD8 *pu1_left_nnz = ps_dec->pu1_left_nnz_y; |
| 2470 | WORD16 *pi2_coeff_block = NULL; |
| 2471 | UWORD32 *pu4_dummy; |
| 2472 | WORD32 ret; |
| 2473 | |
| 2474 | WORD32 (**pf_cavlc_parse_8x8block)(WORD16 *pi2_coeff_block, |
| 2475 | UWORD32 u4_sub_block_strd, |
| 2476 | UWORD32 u4_isdc, |
| 2477 | struct _DecStruct *ps_dec, |
| 2478 | UWORD8 *pu1_top_nnz, |
| 2479 | UWORD8 *pu1_left_nnz, |
| 2480 | UWORD8 u1_tran_form8x8, |
| 2481 | UWORD8 u1_mb_field_decodingflag, |
| 2482 | UWORD32 *pu4_dummy) = ps_dec->pf_cavlc_parse_8x8block; |
| 2483 | |
| 2484 | |
| 2485 | { |
| 2486 | UWORD8 uc_temp = ps_dec->u1_mb_ngbr_availablity; |
| 2487 | u1_is_top_mb_avail = BOOLEAN(uc_temp & TOP_MB_AVAILABLE_MASK); |
| 2488 | u1_is_left_mb_avail = BOOLEAN(uc_temp & LEFT_MB_AVAILABLE_MASK); |
| 2489 | u4_nbr_avl = (u1_is_top_mb_avail << 1) | u1_is_left_mb_avail; |
| 2490 | } |
| 2491 | |
| 2492 | ps_cur_mb_info->u1_qp_div6 = ps_dec->u1_qp_y_div6; |
| 2493 | ps_cur_mb_info->u1_qp_rem6 = ps_dec->u1_qp_y_rem6; |
| 2494 | ps_cur_mb_info->u1_qpc_div6 = ps_dec->u1_qp_u_div6; |
| 2495 | ps_cur_mb_info->u1_qpc_rem6 = ps_dec->u1_qp_u_rem6; |
| 2496 | ps_cur_mb_info->u1_qpcr_div6 = ps_dec->u1_qp_v_div6; |
| 2497 | ps_cur_mb_info->u1_qpcr_rem6 = ps_dec->u1_qp_v_rem6; |
| 2498 | |
| 2499 | if(u1_cbp & 0xf) |
| 2500 | { |
| 2501 | pu1_top_nnz[0] = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0]; |
| 2502 | pu1_top_nnz[1] = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[1]; |
| 2503 | pu1_top_nnz[2] = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[2]; |
| 2504 | pu1_top_nnz[3] = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[3]; |
| 2505 | |
| 2506 | /*******************************************************************/ |
| 2507 | /* Block 0 residual decoding, check cbp and proceed (subblock = 0) */ |
| 2508 | /*******************************************************************/ |
| 2509 | if(!(u1_cbp & 0x1)) |
| 2510 | { |
| 2511 | *(UWORD16 *)(pu1_top_nnz) = 0; |
| 2512 | *(UWORD16 *)(pu1_left_nnz) = 0; |
| 2513 | |
| 2514 | } |
| 2515 | else |
| 2516 | { |
| 2517 | UWORD32 u4_temp; |
| 2518 | ret = pf_cavlc_parse_8x8block[u4_nbr_avl]( |
| 2519 | pi2_coeff_block, 4, u1_offset, ps_dec, pu1_top_nnz, |
| 2520 | pu1_left_nnz, ps_cur_mb_info->u1_tran_form8x8, |
| 2521 | ps_cur_mb_info->u1_mb_field_decodingflag, &u4_temp); |
| 2522 | if(ret != OK) |
| 2523 | return ret; |
| 2524 | ui16_csbp = u4_temp; |
| 2525 | } |
| 2526 | |
| 2527 | /*******************************************************************/ |
| 2528 | /* Block 1 residual decoding, check cbp and proceed (subblock = 2) */ |
| 2529 | /*******************************************************************/ |
| 2530 | if(ps_cur_mb_info->u1_tran_form8x8) |
| 2531 | { |
| 2532 | pi2_coeff_block += 64; |
| 2533 | } |
| 2534 | else |
| 2535 | { |
| 2536 | pi2_coeff_block += (2 * NUM_COEFFS_IN_4x4BLK); |
| 2537 | } |
| 2538 | |
| 2539 | if(!(u1_cbp & 0x2)) |
| 2540 | { |
| 2541 | *(UWORD16 *)(pu1_top_nnz + 2) = 0; |
| 2542 | *(UWORD16 *)(pu1_left_nnz) = 0; |
| 2543 | } |
| 2544 | else |
| 2545 | { |
| 2546 | UWORD32 u4_temp = (u4_nbr_avl | 0x1); |
| 2547 | ret = pf_cavlc_parse_8x8block[u4_temp]( |
| 2548 | pi2_coeff_block, 4, u1_offset, ps_dec, |
| 2549 | (pu1_top_nnz + 2), pu1_left_nnz, |
| 2550 | ps_cur_mb_info->u1_tran_form8x8, |
| 2551 | ps_cur_mb_info->u1_mb_field_decodingflag, &u4_temp); |
| 2552 | if(ret != OK) |
| 2553 | return ret; |
| 2554 | ui16_csbp |= (u4_temp << 2); |
| 2555 | } |
| 2556 | |
| 2557 | /*******************************************************************/ |
| 2558 | /* Block 2 residual decoding, check cbp and proceed (subblock = 8) */ |
| 2559 | /*******************************************************************/ |
| 2560 | if(ps_cur_mb_info->u1_tran_form8x8) |
| 2561 | { |
| 2562 | pi2_coeff_block += 64; |
| 2563 | } |
| 2564 | else |
| 2565 | { |
| 2566 | pi2_coeff_block += (6 * NUM_COEFFS_IN_4x4BLK); |
| 2567 | } |
| 2568 | |
| 2569 | if(!(u1_cbp & 0x4)) |
| 2570 | { |
| 2571 | *(UWORD16 *)(pu1_top_nnz) = 0; |
| 2572 | *(UWORD16 *)(pu1_left_nnz + 2) = 0; |
| 2573 | } |
| 2574 | else |
| 2575 | { |
| 2576 | UWORD32 u4_temp = (u4_nbr_avl | 0x2); |
| 2577 | ret = pf_cavlc_parse_8x8block[u4_temp]( |
| 2578 | pi2_coeff_block, 4, u1_offset, ps_dec, pu1_top_nnz, |
| 2579 | (pu1_left_nnz + 2), ps_cur_mb_info->u1_tran_form8x8, |
| 2580 | ps_cur_mb_info->u1_mb_field_decodingflag, &u4_temp); |
| 2581 | if(ret != OK) |
| 2582 | return ret; |
| 2583 | ui16_csbp |= (u4_temp << 8); |
| 2584 | } |
| 2585 | |
| 2586 | /*******************************************************************/ |
| 2587 | /* Block 3 residual decoding, check cbp and proceed (subblock = 10)*/ |
| 2588 | /*******************************************************************/ |
| 2589 | if(ps_cur_mb_info->u1_tran_form8x8) |
| 2590 | { |
| 2591 | pi2_coeff_block += 64; |
| 2592 | } |
| 2593 | else |
| 2594 | { |
| 2595 | pi2_coeff_block += (2 * NUM_COEFFS_IN_4x4BLK); |
| 2596 | } |
| 2597 | |
| 2598 | if(!(u1_cbp & 0x8)) |
| 2599 | { |
| 2600 | *(UWORD16 *)(pu1_top_nnz + 2) = 0; |
| 2601 | *(UWORD16 *)(pu1_left_nnz + 2) = 0; |
| 2602 | } |
| 2603 | else |
| 2604 | { |
| 2605 | UWORD32 u4_temp; |
| 2606 | ret = pf_cavlc_parse_8x8block[0x3]( |
| 2607 | pi2_coeff_block, 4, u1_offset, ps_dec, |
| 2608 | (pu1_top_nnz + 2), (pu1_left_nnz + 2), |
| 2609 | ps_cur_mb_info->u1_tran_form8x8, |
| 2610 | ps_cur_mb_info->u1_mb_field_decodingflag, &u4_temp); |
| 2611 | if(ret != OK) |
| 2612 | return ret; |
| 2613 | ui16_csbp |= (u4_temp << 10); |
| 2614 | } |
| 2615 | } |
| 2616 | else |
| 2617 | { |
| 2618 | *(UWORD32 *)(pu1_top_nnz) = 0; |
| 2619 | *(UWORD32 *)(pu1_left_nnz) = 0; |
| 2620 | } |
| 2621 | |
| 2622 | ps_cur_mb_info->u2_luma_csbp = ui16_csbp; |
| 2623 | ps_cur_mb_info->ps_curmb->u2_luma_csbp = ui16_csbp; |
| 2624 | |
| 2625 | { |
| 2626 | UWORD16 u2_chroma_csbp = 0; |
| 2627 | ps_cur_mb_info->u2_chroma_csbp = 0; |
| 2628 | pu1_top_nnz = ps_cur_mb_info->ps_curmb->pu1_nnz_uv; |
| 2629 | pu1_left_nnz = ps_dec->pu1_left_nnz_uv; |
| 2630 | |
| 2631 | u1_cbp >>= 4; |
| 2632 | /*--------------------------------------------------------------------*/ |
| 2633 | /* if Chroma Component not present OR no ac values present */ |
| 2634 | /* Set the values of N to zero */ |
| 2635 | /*--------------------------------------------------------------------*/ |
| 2636 | if(u1_cbp == CBPC_ALLZERO || u1_cbp == CBPC_ACZERO) |
| 2637 | { |
| 2638 | *(UWORD32 *)(pu1_top_nnz) = 0; |
| 2639 | *(UWORD32 *)(pu1_left_nnz) = 0; |
| 2640 | } |
| 2641 | |
| 2642 | if(u1_cbp == CBPC_ALLZERO) |
| 2643 | { |
| 2644 | return (0); |
| 2645 | } |
| 2646 | /*--------------------------------------------------------------------*/ |
| 2647 | /* Decode Chroma DC values */ |
| 2648 | /*--------------------------------------------------------------------*/ |
| 2649 | { |
| 2650 | WORD32 u4_scale_u; |
| 2651 | WORD32 u4_scale_v; |
| 2652 | WORD32 i4_mb_inter_inc; |
| 2653 | u4_scale_u = ps_dec->pu2_quant_scale_u[0] << ps_dec->u1_qp_u_div6; |
| 2654 | u4_scale_v = ps_dec->pu2_quant_scale_v[0] << ps_dec->u1_qp_v_div6; |
| 2655 | i4_mb_inter_inc = (!((ps_cur_mb_info->ps_curmb->u1_mb_type == I_4x4_MB) |
| 2656 | || (ps_cur_mb_info->ps_curmb->u1_mb_type == I_16x16_MB))) |
| 2657 | * 3; |
| 2658 | |
| 2659 | if(ps_dec->s_high_profile.u1_scaling_present) |
| 2660 | { |
| 2661 | u4_scale_u *= |
| 2662 | ps_dec->s_high_profile.i2_scalinglist4x4[i4_mb_inter_inc |
| 2663 | + 1][0]; |
| 2664 | u4_scale_v *= |
| 2665 | ps_dec->s_high_profile.i2_scalinglist4x4[i4_mb_inter_inc |
| 2666 | + 2][0]; |
| 2667 | |
| 2668 | } |
| 2669 | else |
| 2670 | { |
| 2671 | u4_scale_u <<= 4; |
| 2672 | u4_scale_v <<= 4; |
| 2673 | } |
| 2674 | |
| 2675 | ih264d_cavlc_parse_chroma_dc(ps_cur_mb_info,pi2_coeff_block, ps_dec->ps_bitstrm, |
| 2676 | u4_scale_u, u4_scale_v, |
| 2677 | i4_mb_inter_inc); |
| 2678 | } |
| 2679 | |
| 2680 | if(u1_cbp == CBPC_ACZERO) |
| 2681 | return (0); |
| 2682 | |
| 2683 | pu1_top_nnz[0] = ps_cur_mb_info->ps_top_mb->pu1_nnz_uv[0]; |
| 2684 | pu1_top_nnz[1] = ps_cur_mb_info->ps_top_mb->pu1_nnz_uv[1]; |
| 2685 | pu1_top_nnz[2] = ps_cur_mb_info->ps_top_mb->pu1_nnz_uv[2]; |
| 2686 | pu1_top_nnz[3] = ps_cur_mb_info->ps_top_mb->pu1_nnz_uv[3]; |
| 2687 | /*--------------------------------------------------------------------*/ |
| 2688 | /* Decode Chroma AC values */ |
| 2689 | /*--------------------------------------------------------------------*/ |
| 2690 | { |
| 2691 | UWORD32 u4_temp; |
| 2692 | /*****************************************************************/ |
| 2693 | /* U Block residual decoding, check cbp and proceed (subblock=0)*/ |
| 2694 | /*****************************************************************/ |
| 2695 | ret = pf_cavlc_parse_8x8block[u4_nbr_avl]( |
| 2696 | pi2_coeff_block, 2, 1, ps_dec, pu1_top_nnz, |
| 2697 | pu1_left_nnz, 0, 0, &u4_temp); |
| 2698 | if(ret != OK) |
| 2699 | return ret; |
| 2700 | u2_chroma_csbp = u4_temp; |
| 2701 | |
| 2702 | pi2_coeff_block += MB_CHROM_SIZE; |
| 2703 | /*****************************************************************/ |
| 2704 | /* V Block residual decoding, check cbp and proceed (subblock=1)*/ |
| 2705 | /*****************************************************************/ |
| 2706 | ret = pf_cavlc_parse_8x8block[u4_nbr_avl](pi2_coeff_block, 2, 1, |
| 2707 | ps_dec, |
| 2708 | (pu1_top_nnz + 2), |
| 2709 | (pu1_left_nnz + 2), 0, |
| 2710 | 0, &u4_temp); |
| 2711 | if(ret != OK) |
| 2712 | return ret; |
| 2713 | u2_chroma_csbp |= (u4_temp << 4); |
| 2714 | } |
| 2715 | |
| 2716 | ps_cur_mb_info->u2_chroma_csbp = u2_chroma_csbp; |
| 2717 | } |
| 2718 | return OK; |
| 2719 | } |