1 /******************************************************************************
2 *
3 * Copyright (C) 2022 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
23 * isvcd_parse_ebslice.c
24 *
25 * @brief
26 * Contains routines that decode a I slice type
27 *
28 * @author
29 * Kishore
30 *
31 * @par List of Functions:
32 * - isvcd_parse_bmb_cabac()
33 * - isvcd_mv_pred_ref_tfr_nby2_ebmb()
34 * - isvcd_parse_bmb_cavlc()
35 * - isvcd_parse_bmb_non_direct_cabac()
36 * - isvcd_parse_bmb_non_direct_cavlc()
37 * - isvcd_parse_ebslice()
38 * - isvcd_parse_bslice()
39 *
40 * @remarks
41 * None
42 *
43 *******************************************************************************
44 */
45
46 #include <assert.h>
47 #include <string.h>
48 #include "ih264_defs.h"
49 #include "ih264d_bitstrm.h"
50 #include "ih264d_defs.h"
51 #include "ih264d_debug.h"
52 #include "ih264d_tables.h"
53 #include "isvcd_structs.h"
54 #include "ih264d_parse_cavlc.h"
55 #include "ih264d_mb_utils.h"
56 #include "ih264d_parse_slice.h"
57 #include "ih264d_process_intra_mb.h"
58 #include "ih264d_mvpred.h"
59 #include "ih264d_parse_islice.h"
60 #include "ih264d_inter_pred.h"
61 #include "ih264d_process_pslice.h"
62 #include "isvcd_process_epslice.h"
63 #include "ih264d_process_bslice.h"
64 #include "ih264d_deblocking.h"
65 #include "ih264d_cabac.h"
66 #include "ih264d_parse_mb_header.h"
67 #include "ih264d_error_handler.h"
68 #include "ih264d_mvpred.h"
69 #include "ih264d_cabac.h"
70 #include "ih264d_utils.h"
71 #include "ih264d_parse_headers.h"
72 #include "isvcd_parse_headers.h"
73 #include "isvcd_process_ebslice.h"
74 #include "isvcd_parse_slice.h"
75 #include "ih264_debug.h"
76 #include "isvcd_parse_cavlc.h"
77 #include "isvcd_mb_utils.h"
78
79 void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);
80 void isvcd_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);
81 void ih264d_get_implicit_weights(dec_struct_t *ps_dec);
82 WORD32 isvcd_interlyr_motion_mode_pred(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
83 dec_mb_info_t *ps_cur_mb_info,
84 dec_svc_mb_info_t *ps_svc_cur_mb_info,
85 parse_pmbarams_t *ps_mb_part_info,
86 parse_part_params_t *ps_part);
87
88 /*!
89 **************************************************************************
90 * \if Function name : isvcd_parse_bmb_cabac \endif
91 *
92 * \brief
93 * This function parses CABAC syntax of a B MB.
94 *
95 * \return
96 * 0 on Success and Error code otherwise
97 **************************************************************************
98 */
isvcd_parse_bmb_cabac(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_mb_info_t * ps_cur_mb_info,dec_svc_mb_info_t * ps_svc_cur_mb_info,UWORD8 u1_mb_num,UWORD8 u1_num_mbsNby2)99 WORD32 isvcd_parse_bmb_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
100 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num,
101 UWORD8 u1_num_mbsNby2)
102 {
103 UWORD8 u1_cbp = 0;
104 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
105 deblk_mb_t *ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num;
106 const UWORD8 *puc_mb_mc_mode = (const UWORD8 *) gau1_ih264d_mb_mc_mode;
107 UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
108 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
109 dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
110 decoding_envirnoment_t *ps_cab_env = &ps_dec->s_cab_dec_env;
111 WORD32 ret;
112 UWORD8 u1_Bdirect_tranform_read = 1;
113 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
114
115 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
116 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1;
117 ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type];
118 ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
119 ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE;
120
121 if(u1_mb_type != B_DIRECT)
122 {
123 ret = isvcd_parse_bmb_non_direct_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
124 u1_mb_num, u1_num_mbsNby2);
125 if(ret != OK) return ret;
126 }
127 else
128 {
129 /************ STORING PARTITION INFO ***********/
130 parse_part_params_t *ps_part_info;
131 ps_part_info = ps_dec->ps_part;
132 ps_part_info->u1_is_direct = PART_DIRECT_16x16;
133 ps_part_info->u1_sub_mb_num = 0;
134 ps_dec->ps_part++;
135 p_curr_ctxt->u1_mb_type = CAB_BD16x16;
136
137 MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);
138 memset(ps_dec->pi1_left_ref_idx_ctxt_inc, 0, 4);
139 MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0);
140 memset(p_curr_ctxt->i1_ref_idx, 0, 4);
141
142 /* check whether transform8x8 u4_flag to be read or not */
143 u1_Bdirect_tranform_read = ps_dec->s_high_profile.u1_direct_8x8_inference_flag;
144 }
145
146 if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag &&
147 ps_svc_cur_mb_info->u1_crop_window_flag)
148 {
149 ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_decode_bin(
150 1, ps_svc_lyr_dec->ps_residual_prediction_flag, ps_bitstrm, ps_cab_env);
151 COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag",
152 ps_svc_cur_mb_info->u1_residual_prediction_flag);
153 }
154 else
155 {
156 /*residual flag inference code */
157 if(1 == ps_svc_cur_mb_info->u1_crop_window_flag &&
158 1 == ps_svc_cur_mb_info->u1_base_mode_flag)
159 {
160 ps_svc_cur_mb_info->u1_residual_prediction_flag =
161 ps_svc_slice_params->u1_default_residual_prediction_flag;
162 }
163 else
164 {
165 ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;
166 }
167 }
168
169 if(ps_svc_slice_params->u1_scan_idx_end >= ps_svc_slice_params->u1_scan_idx_start)
170 {
171 /* Read the Coded block pattern */
172 u1_cbp = (WORD8) ih264d_parse_ctx_cbp_cabac(ps_dec);
173 p_curr_ctxt->u1_cbp = u1_cbp;
174 ps_cur_mb_info->u1_cbp = u1_cbp;
175
176 if(u1_cbp > 47) return ERROR_CBP;
177 COPYTHECONTEXT("coded_block_pattern", u1_cbp);
178
179 ps_cur_mb_info->u1_tran_form8x8 = 0;
180 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
181
182 if((ps_dec->s_high_profile.u1_transform8x8_present) && (u1_cbp & (0xf)) &&
183 (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) && (u1_Bdirect_tranform_read))
184 {
185 ps_cur_mb_info->u1_tran_form8x8 =
186 ih264d_parse_transform8x8flag_cabac(ps_dec, ps_cur_mb_info);
187 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
188
189 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
190 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
191 }
192 else
193 {
194 p_curr_ctxt->u1_transform8x8_ctxt = 0;
195 }
196 }
197
198 p_curr_ctxt->u1_intra_chroma_pred_mode = 0;
199 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
200 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
201
202 /* Read mb_qp_delta */
203 if(u1_cbp)
204 {
205 WORD8 c_temp;
206 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &c_temp);
207 if(ret != OK) return ret;
208 COPYTHECONTEXT("mb_qp_delta", c_temp);
209 if(c_temp)
210 {
211 ret = ih264d_update_qp(ps_dec, c_temp);
212 if(ret != OK) return ret;
213 }
214 }
215 else
216 ps_dec->i1_prev_mb_qp_delta = 0;
217
218 /*RESIDUAL FOR Start to end idx*/
219 ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, 0);
220 if(EXCEED_OFFSET(ps_dec->ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
221 return OK;
222 }
223 /*!
224 **************************************************************************
225 * \if Function name : isvcd_mv_pred_ref_tfr_nby2_ebmb \endif
226 *
227 * \brief
228 * This function computes the mv pred for b frame
229 *
230 * \return
231 * 0 on Success and Error code otherwise
232 **************************************************************************
233 */
isvcd_mv_pred_ref_tfr_nby2_ebmb(dec_struct_t * ps_dec,UWORD8 u1_mb_idx,UWORD8 u1_num_mbs)234 WORD32 isvcd_mv_pred_ref_tfr_nby2_ebmb(dec_struct_t *ps_dec, UWORD8 u1_mb_idx, UWORD8 u1_num_mbs)
235 {
236 svc_dec_lyr_struct_t *ps_svc_lyr_dec = (svc_dec_lyr_struct_t *) ps_dec;
237 parse_pmbarams_t *ps_mb_part_info;
238 parse_part_params_t *ps_part;
239 mv_pred_t *ps_mv_nmb, *ps_mv_nmb_start, *ps_mv_ntop, *ps_mv_ntop_start;
240 pic_buffer_t *ps_ref_frame;
241 UWORD8 u1_direct_mode_width;
242 UWORD8 i, j;
243 dec_mb_info_t *ps_cur_mb_info;
244 dec_svc_mb_info_t *ps_svc_cur_mb_info;
245 const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
246 UWORD8 u1_field;
247 WORD32 ret = 0;
248 WORD16 i2_mv_x, i2_mv_y;
249
250 ps_dec->i4_submb_ofst -= (u1_num_mbs - u1_mb_idx) << 4;
251 ps_mb_part_info = ps_dec->ps_parse_mb_data;
252 ps_part = ps_dec->ps_parse_part_params;
253
254 /* N/2 Mb MvPred and Transfer Setup Loop */
255 for(i = u1_mb_idx; i < u1_num_mbs; i++, ps_mb_part_info++)
256 {
257 UWORD8 u1_colz = 0;
258 ps_dec->i4_submb_ofst += SUB_BLK_SIZE;
259 /* Restore the slice scratch MbX and MbY context */
260 ps_cur_mb_info = ps_dec->ps_nmb_info + i;
261 ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + i;
262 u1_field = ps_cur_mb_info->u1_mb_field_decodingflag;
263 ps_mv_nmb_start = ps_dec->ps_mv_cur + (i << 4);
264 ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx;
265 ps_dec->u2_mby = ps_cur_mb_info->u2_mby;
266 ps_dec->u1_currB_type = 0;
267 ps_dec->u2_mv_2mb[i & 0x1] = 0;
268
269 /* Look for MV Prediction and Reference Transfer in Non-I Mbs */
270 if(!ps_mb_part_info->u1_isI_mb)
271 {
272 UWORD8 u1_blk_no;
273 WORD16 i1_ref_idx, i1_ref_idx1;
274 UWORD8 u1_pred_mode;
275 UWORD8 u1_sub_mb_x, u1_sub_mb_y, u1_sub_mb_num;
276 UWORD8 u1_lx, u1_lx_start, u1_lxend, u1_tmp_lx;
277 UWORD8 u1_num_part, u1_num_ref, u1_wd, u1_ht;
278 UWORD32 *pu4_wt_offst;
279 UWORD8 u1_scale_ref, u4_bot_mb;
280 deblk_mb_t *ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + i;
281 WORD8(*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_mb_part_info->i1_ref_idx;
282 WORD8 *pi1_ref_idx0 = pi1_ref_idx[0], *pi1_ref_idx1 = pi1_ref_idx[1];
283 UWORD32 **ppu4_wt_ofst = ps_mb_part_info->pu4_wt_offst;
284 WORD32 i4_mb_mode_svc;
285 UWORD8 u1_motion_pred_flag_l0 = ps_svc_cur_mb_info->au1_motion_pred_flag[0];
286 UWORD8 u1_motion_pred_flag_l1 = ps_svc_cur_mb_info->au1_motion_pred_flag[1];
287
288 /* MB Level initialisations */
289 ps_dec->u4_num_pmbair = i >> u1_mbaff;
290 ps_dec->u1_mb_idx_mv = i;
291
292 i4_mb_mode_svc = isvcd_interlyr_motion_mode_pred(
293 ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info, ps_mb_part_info, ps_part);
294
295 if((-1 == i4_mb_mode_svc) || (SVC_INTER_MB == i4_mb_mode_svc))
296 {
297 ps_mv_ntop_start =
298 ps_mv_nmb_start - (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12;
299
300 u1_num_part = ps_mb_part_info->u1_num_part;
301 ps_cur_deblk_mb->u1_mb_type |= (u1_num_part > 1) << 1;
302 u1_direct_mode_width = (1 == ps_mb_part_info->u1_num_part) ? 16 : 8;
303
304 ps_cur_mb_info->u4_pred_info_pkd_idx = ps_dec->u4_pred_info_pkd_idx;
305 ps_cur_mb_info->u1_num_pred_parts = 0;
306
307 /****************************************************/
308 /* weighted u4_ofst pointer calculations, this loop */
309 /* runs maximum 4 times, even in direct cases */
310 /****************************************************/
311 u1_scale_ref = u1_mbaff & ps_cur_mb_info->u1_mb_field_decodingflag;
312 u4_bot_mb = 1 - ps_cur_mb_info->u1_topmb;
313 if(ps_dec->ps_cur_pps->u1_wted_bipred_idc)
314 {
315 u1_num_ref = MIN(u1_num_part, 4);
316 if(PART_DIRECT_16x16 != ps_part->u1_is_direct)
317 {
318 for(u1_blk_no = 0; u1_blk_no < u1_num_ref; u1_blk_no++)
319 {
320 i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0);
321 if(u1_scale_ref) i1_ref_idx >>= 1;
322 i1_ref_idx *= ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
323 if(u1_scale_ref)
324 i1_ref_idx += (MAX(pi1_ref_idx1[u1_blk_no], 0) >> 1);
325 else
326 i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0);
327 pu4_wt_offst = (UWORD32 *) &ps_dec->pu4_wt_ofsts[2 * X3(i1_ref_idx)];
328
329 if(pi1_ref_idx0[u1_blk_no] < 0) pu4_wt_offst += 1;
330
331 ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;
332 if(u1_scale_ref && (ps_dec->ps_cur_pps->u1_wted_bipred_idc == 2))
333 {
334 i1_ref_idx = MAX(pi1_ref_idx0[u1_blk_no], 0);
335 i1_ref_idx *=
336 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] << 1);
337 i1_ref_idx += MAX(pi1_ref_idx1[u1_blk_no], 0);
338 if(u4_bot_mb)
339 {
340 i1_ref_idx +=
341 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0] << 1) *
342 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1] << 1);
343 }
344 pu4_wt_offst =
345 (UWORD32 *) &ps_dec->pu4_mbaff_wt_mat[2 * X3(i1_ref_idx)];
346 ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;
347 }
348 }
349 }
350 }
351
352 /**************************************************/
353 /* Loop on Partitions */
354 /* direct mode is reflected as a single partition */
355 /**************************************************/
356 for(j = 0; j < u1_num_part; j++, ps_part++)
357 {
358 u1_sub_mb_num = ps_part->u1_sub_mb_num;
359 ps_dec->u1_sub_mb_num = u1_sub_mb_num;
360
361 if(PART_NOT_DIRECT != ps_part->u1_is_direct)
362 {
363 /**************************************************/
364 /* Direct Mode, Call DecodeSpatial/TemporalDirect */
365 /* only (those will in turn call FormMbPartInfo) */
366 /**************************************************/
367 ret = isvcd_decode_spatial_direct(ps_dec, u1_direct_mode_width,
368 ps_cur_mb_info, i);
369 if(ret != OK) return ret;
370 ps_cur_deblk_mb->u1_mb_type |= (ps_dec->u1_currB_type << 1);
371 }
372 else
373 {
374 mv_pred_t s_mvPred = {0};
375 /**************************************************/
376 /* Non Direct Mode, Call Motion Vector Predictor */
377 /* and FormMbpartInfo */
378 /**************************************************/
379 u1_sub_mb_x = u1_sub_mb_num & 0x03;
380 u1_sub_mb_y = u1_sub_mb_num >> 2;
381 u1_blk_no = (u1_num_part < 4)
382 ? j
383 : (((u1_sub_mb_y >> 1) << 1) + (u1_sub_mb_x >> 1));
384
385 ps_mv_ntop = ps_mv_ntop_start + u1_sub_mb_x;
386 ps_mv_nmb = ps_mv_nmb_start + u1_sub_mb_num;
387
388 /* Populate the colpic info and reference frames */
389 s_mvPred.i1_ref_frame[0] = pi1_ref_idx0[u1_blk_no];
390 s_mvPred.i1_ref_frame[1] = pi1_ref_idx1[u1_blk_no];
391 u1_pred_mode = ps_part->u1_pred_mode;
392 u1_wd = ps_part->u1_partwidth;
393 u1_ht = ps_part->u1_partheight;
394
395 if(1 != ps_svc_cur_mb_info->u1_base_mode_flag)
396 {
397 u1_lx_start = 0;
398 u1_lxend = 2;
399 if(PRED_L0 == u1_pred_mode)
400 {
401 s_mvPred.i2_mv[2] = 0;
402 s_mvPred.i2_mv[3] = 0;
403 if(0 == (u1_motion_pred_flag_l0 & (1 << u1_blk_no)))
404 {
405 u1_lxend = 1;
406 }
407 else
408 {
409 u1_lxend = 0;
410 }
411 }
412 else if(PRED_L1 == u1_pred_mode)
413 {
414 s_mvPred.i2_mv[0] = 0;
415 s_mvPred.i2_mv[1] = 0;
416 if(0 == (u1_motion_pred_flag_l1 & (1 << u1_blk_no)))
417 {
418 u1_lx_start = 1;
419 }
420 else
421 {
422 u1_lx_start = 2;
423 }
424 }
425 else // Bi Pred
426 {
427 if(0 == (u1_motion_pred_flag_l0 & (1 << u1_blk_no)))
428 {
429 u1_lxend = 1;
430 }
431 if(0 == (u1_motion_pred_flag_l1 & (1 << u1_blk_no)))
432 {
433 u1_lx_start = 1;
434 }
435 if((0 != (u1_motion_pred_flag_l0 & (1 << u1_blk_no))) &&
436 (0 != (u1_motion_pred_flag_l1 & (1 << u1_blk_no))))
437 {
438 u1_lx_start = 0;
439 u1_lxend = 0;
440 }
441 if((0 == (u1_motion_pred_flag_l0 & (1 << u1_blk_no))) &&
442 (0 == (u1_motion_pred_flag_l1 & (1 << u1_blk_no))))
443 {
444 u1_lx_start = 0;
445 u1_lxend = 2;
446 }
447 }
448 ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb, ps_mv_ntop,
449 &s_mvPred, u1_sub_mb_num, u1_wd, u1_lx_start,
450 u1_lxend, ps_cur_mb_info->u1_mb_mc_mode);
451 }
452
453 /* for generic case based on pred mode derived / signalled */
454 u1_lx_start = 0;
455 u1_lxend = 2;
456 if(PRED_L0 == u1_pred_mode)
457 {
458 s_mvPred.i2_mv[2] = 0;
459 s_mvPred.i2_mv[3] = 0;
460 u1_lxend = 1;
461 }
462 if(PRED_L1 == u1_pred_mode)
463 {
464 s_mvPred.i2_mv[0] = 0;
465 s_mvPred.i2_mv[1] = 0;
466 u1_lx_start = 1;
467 }
468
469 /**********************************************************/
470 /* Loop on number of predictors, 1 Each for Forw Backw */
471 /* Loop 2 times for BiDirect mode */
472 /**********************************************************/
473 for(u1_lx = u1_lx_start; u1_lx < u1_lxend; u1_lx++)
474 {
475 UWORD8 u1_motion_pred_flag =
476 u1_lx ? u1_motion_pred_flag_l1 : u1_motion_pred_flag_l0;
477
478 if((0 != (u1_motion_pred_flag & (1 << u1_blk_no))) ||
479 (ps_svc_cur_mb_info->u1_base_mode_flag))
480 {
481 isvcd_retrive_infer_mode_mv(ps_svc_lyr_dec, &s_mvPred, u1_lx,
482 u1_sub_mb_num);
483 }
484 /********************************************************/
485 /* Predict Mv */
486 /* Add Mv Residuals and store back */
487 /********************************************************/
488 u1_tmp_lx = (u1_lx << 1);
489 i1_ref_idx = s_mvPred.i1_ref_frame[u1_lx];
490 /********************************************************************/
491 /* If reference index is inferred from the base layer and it is */
492 /* exceeding the number of active reference in the current layer. */
493 /* Then reference index is clipped to the max in the current layer */
494 /********************************************************************/
495 if(ps_svc_cur_mb_info->u1_base_mode_flag == 1)
496 {
497 if(i1_ref_idx > (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[u1_lx] - 1))
498 {
499 i1_ref_idx = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[u1_lx] - 1;
500 }
501 }
502 if(0 == ps_svc_cur_mb_info->u1_base_mode_flag)
503 {
504 i2_mv_x = ps_mv_nmb->i2_mv[u1_tmp_lx];
505 i2_mv_y = ps_mv_nmb->i2_mv[u1_tmp_lx + 1];
506
507 i2_mv_x += s_mvPred.i2_mv[u1_tmp_lx];
508 i2_mv_y += s_mvPred.i2_mv[u1_tmp_lx + 1];
509
510 s_mvPred.i2_mv[u1_tmp_lx] = i2_mv_x;
511 s_mvPred.i2_mv[u1_tmp_lx + 1] = i2_mv_y;
512 }
513 else
514 {
515 i2_mv_x = s_mvPred.i2_mv[u1_tmp_lx];
516 i2_mv_y = s_mvPred.i2_mv[u1_tmp_lx + 1];
517 }
518
519 /********************************************************/
520 /* Transfer setup call */
521 /* convert RefIdx if it is MbAff */
522 /* Pass Weight Offset and refFrame */
523 /********************************************************/
524 i1_ref_idx1 = i1_ref_idx >> u1_scale_ref;
525
526 if(-1 == i1_ref_idx1) return NOT_OK;
527 if(u1_scale_ref && ((i1_ref_idx & 0x01) != u4_bot_mb))
528 i1_ref_idx1 += MAX_REF_BUFS;
529 ps_ref_frame = ps_dec->ps_ref_pic_buf_lx[u1_lx][i1_ref_idx1];
530
531 /* Storing Colocated-Zero u4_flag */
532 if(u1_lx == u1_lx_start)
533 {
534 /* Fill colocated info in MvPred structure */
535 s_mvPred.u1_col_ref_pic_idx = ps_ref_frame->u1_mv_buf_id;
536 s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type;
537
538 /* Calculating colocated zero information */
539 u1_colz =
540 (u1_field << 1) | ((i1_ref_idx == 0) && (ABS(i2_mv_x) <= 1) &&
541 (ABS(i2_mv_y) <= 1));
542 u1_colz |= ps_mb_part_info->u1_col_info[u1_blk_no];
543 }
544
545 pu4_wt_offst = ppu4_wt_ofst[u1_blk_no];
546 {
547 pred_info_pkd_t *ps_pred_pkd;
548 WORD16 i2_mv[2];
549
550 i2_mv[0] = i2_mv_x;
551 i2_mv[1] = i2_mv_y;
552
553 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
554 ih264d_fill_pred_info(i2_mv, u1_wd, u1_ht, u1_sub_mb_num,
555 u1_pred_mode, ps_pred_pkd,
556 ps_ref_frame->u1_pic_buf_id, i1_ref_idx,
557 pu4_wt_offst, ps_ref_frame->u1_pic_type);
558 ps_dec->u4_pred_info_pkd_idx++;
559 ps_cur_mb_info->u1_num_pred_parts++;
560 }
561 }
562 if(ps_mv_nmb)
563 {
564 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb, u1_sub_mb_num, u1_colz,
565 u1_ht, u1_wd);
566 }
567 else
568 {
569 return NOT_OK;
570 }
571 }
572 }
573 /* to take care of 16 parttitions increment for base mode flag case*/
574 if(1 == ps_svc_cur_mb_info->u1_base_mode_flag)
575 {
576 ps_part += (MAX_NUM_MB_PART - u1_num_part);
577 }
578 }
579 else
580 {
581 /* Set zero values in case of Intra Mbs */
582 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
583 /* to take care of 16 parttitions increment for base mode flag case*/
584 if(1 != ps_svc_cur_mb_info->u1_base_mode_flag)
585 {
586 return NOT_OK;
587 }
588
589 ps_cur_deblk_mb->u1_mb_type |= D_INTRA_IBL;
590 if((ps_svc_lyr_dec->u1_layer_identifier != TARGET_LAYER) &&
591 (DBLK_ENABLED == ps_dec->ps_cur_slice->u1_disable_dblk_filter_idc))
592 {
593 ps_cur_deblk_mb->u1_deblocking_mode = MB_ENABLE_FILTERING;
594 }
595
596 ps_part += (MAX_NUM_MB_PART);
597 /* Storing colocated zero information */
598 if(ps_mv_nmb_start)
599 {
600 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
601 (UWORD8) (u1_field << 1), 4, 4);
602 }
603 else
604 {
605 return NOT_OK;
606 }
607 }
608 }
609 else
610 {
611 /* Set zero values in case of Intra Mbs */
612 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
613 /* Storing colocated zero information */
614 if(ps_mv_nmb_start)
615 {
616 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0, (UWORD8) (u1_field << 1),
617 4, 4);
618 }
619 else
620 {
621 return NOT_OK;
622 }
623 }
624 }
625
626 return OK;
627 }
628
629 /*!
630 **************************************************************************
631 * \if Function name : isvcd_parse_bmb_cavlc \endif
632 *
633 * \brief
634 * This function parses CAVLC syntax of a B MB.
635 *
636 * \return
637 * 0 on Success and Error code otherwise
638 **************************************************************************
639 */
isvcd_parse_bmb_cavlc(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_mb_info_t * ps_cur_mb_info,dec_svc_mb_info_t * ps_svc_cur_mb_info,UWORD8 u1_mb_num,UWORD8 u1_num_mbsNby2)640 WORD32 isvcd_parse_bmb_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
641 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num,
642 UWORD8 u1_num_mbsNby2)
643 {
644 UWORD32 u4_cbp = 0;
645 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
646 deblk_mb_t *ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_mb_num;
647 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
648 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
649 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
650 const UWORD8 *puc_mb_mc_mode = (const UWORD8 *) gau1_ih264d_mb_mc_mode;
651 UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
652 WORD32 ret;
653 UWORD8 u1_Bdirect_tranform_read = 1;
654 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
655
656 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
657 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 1;
658 ps_cur_mb_info->u1_tran_form8x8 = 0;
659 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
660 ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
661 ps_cur_mb_info->u1_mb_mc_mode = puc_mb_mc_mode[5 + u1_mb_type];
662 ps_cur_deblk_mb->u1_mb_type |= D_B_SLICE;
663 if(u1_mb_type != B_DIRECT)
664 {
665 ret = isvcd_parse_bmb_non_direct_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
666 u1_mb_num, u1_num_mbsNby2);
667 if(ret != OK) return ret;
668 }
669 else
670 {
671 /************ STORING PARTITION INFO ***********/
672 parse_part_params_t *ps_part_info;
673 ps_part_info = ps_dec->ps_part;
674 ps_part_info->u1_is_direct = PART_DIRECT_16x16;
675 ps_part_info->u1_sub_mb_num = 0;
676 ps_dec->ps_part++;
677 /* check whether transform8x8 u4_flag to be read or not */
678 u1_Bdirect_tranform_read = ps_dec->s_high_profile.u1_direct_8x8_inference_flag;
679 }
680
681 if(ps_svc_slice_params->u1_adaptive_residual_prediction_flag &&
682 ps_svc_cur_mb_info->u1_crop_window_flag)
683 {
684 ps_svc_cur_mb_info->u1_residual_prediction_flag = ih264d_get_bit_h264(ps_bitstrm);
685 COPYTHECONTEXT("SVC ext: u1_residual_prediction_flag",
686 ps_svc_cur_mb_info->u1_residual_prediction_flag);
687 }
688 else
689 {
690 /*residual flag inference code */
691 if(1 == ps_svc_cur_mb_info->u1_crop_window_flag &&
692 1 == ps_svc_cur_mb_info->u1_base_mode_flag)
693 {
694 ps_svc_cur_mb_info->u1_residual_prediction_flag =
695 ps_svc_slice_params->u1_default_residual_prediction_flag;
696 }
697 else
698 {
699 ps_svc_cur_mb_info->u1_residual_prediction_flag = 0;
700 }
701 }
702
703 if(ps_svc_slice_params->u1_scan_idx_end >= ps_svc_slice_params->u1_scan_idx_start)
704 {
705 /* Read the Coded block pattern */
706 const UWORD8 *puc_CbpInter = gau1_ih264d_cbp_inter;
707 // Inlined ih264d_uev
708 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
709 UWORD32 u4_word, u4_ldz;
710
711 /***************************************************************/
712 /* Find leading zeros in next 32 bits */
713 /***************************************************************/
714 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
715 u4_ldz = CLZ(u4_word);
716 /* Flush the ps_bitstrm */
717 u4_bitstream_offset += (u4_ldz + 1);
718 /* Read the suffix from the ps_bitstrm */
719 u4_word = 0;
720 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
721 *pu4_bitstrm_ofst = u4_bitstream_offset;
722 u4_cbp = ((1 << u4_ldz) + u4_word - 1);
723 // Inlined ih264d_uev
724 if(u4_cbp > 47) return ERROR_CBP;
725 u4_cbp = puc_CbpInter[u4_cbp];
726
727 if((ps_dec->s_high_profile.u1_transform8x8_present) && (u4_cbp & (0xf)) &&
728 (ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag) && (u1_Bdirect_tranform_read))
729 {
730 ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm);
731 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
732 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
733 }
734
735 COPYTHECONTEXT("coded_block_pattern", u4_cbp);
736 ps_cur_mb_info->u1_cbp = u4_cbp;
737 }
738
739 /* Read mb_qp_delta */
740 if(u4_cbp)
741 {
742 WORD32 i_temp;
743 // inlining ih264d_sev
744 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
745 UWORD32 u4_word, u4_ldz, u4_abs_val;
746
747 /***************************************************************/
748 /* Find leading zeros in next 32 bits */
749 /***************************************************************/
750 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
751 u4_ldz = CLZ(u4_word);
752
753 /* Flush the ps_bitstrm */
754 u4_bitstream_offset += (u4_ldz + 1);
755
756 /* Read the suffix from the ps_bitstrm */
757 u4_word = 0;
758 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
759
760 *pu4_bitstrm_ofst = u4_bitstream_offset;
761 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
762
763 if(u4_word & 0x1)
764 i_temp = (-(WORD32) u4_abs_val);
765 else
766 i_temp = (u4_abs_val);
767
768 if(i_temp < -26 || i_temp > 25) return ERROR_INV_RANGE_QP_T;
769 // inlinined ih264d_sev
770 COPYTHECONTEXT("mb_qp_delta", i_temp);
771 if(i_temp)
772 {
773 ret = ih264d_update_qp(ps_dec, (WORD8) i_temp);
774 if(ret != OK) return ret;
775 }
776
777 /*SVC residual from start to end idx*/
778 ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, 0);
779 if(ret != OK) return ret;
780 if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
781 }
782 else
783 {
784 ps_dec->i1_prev_mb_qp_delta = 0;
785 ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
786 }
787
788 return OK;
789 }
790
791 /*!
792 **************************************************************************
793 * \if Function name : ParseMb_SubMb_PredBCab_svc\endif
794 *
795 * \brief
796 * Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1
797 *
798 * \return
799 * None.
800 *
801 **************************************************************************
802 */
803
isvcd_parse_bmb_non_direct_cabac(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_mb_info_t * ps_cur_mb_info,dec_svc_mb_info_t * ps_svc_cur_mb_info,UWORD8 u1_mb_num,UWORD8 u1_num_mbsNby2)804 WORD32 isvcd_parse_bmb_non_direct_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
805 dec_mb_info_t *ps_cur_mb_info,
806 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num,
807 UWORD8 u1_num_mbsNby2)
808 {
809 /* Loads from ps_dec */
810 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
811 decoding_envirnoment_t *ps_cab_env = &ps_dec->s_cab_dec_env;
812 dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
813 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
814 parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data + u1_num_mbsNby2;
815
816 /* table pointer loads */
817 const UWORD8 *pu1_sub_mb_pred_modes = (UWORD8 *) (gau1_ih264d_submb_pred_modes) + 4;
818 const UWORD8(*pu1_mb_pred_modes)[32] = (const UWORD8(*)[32]) gau1_ih264d_mb_pred_modes;
819 const UWORD8 *pu1_num_mb_part = (const UWORD8 *) gau1_ih264d_num_mb_part;
820 const UWORD8 *pu1_sub_mb_mc_mode = (UWORD8 *) (gau1_ih264d_submb_mc_mode) + 4;
821
822 const UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
823 UWORD8 *pu1_col_info = ps_parse_mb_data->u1_col_info;
824 WORD8 *pi1_ref_idx_l0 = &ps_parse_mb_data->i1_ref_idx[0][0];
825 WORD8 *pi1_ref_idx_l1 = &ps_parse_mb_data->i1_ref_idx[1][0];
826 UWORD8 u1_dec_ref_l0, u1_dec_ref_l1;
827
828 UWORD8 u1_num_mb_part, u1_mb_mc_mode, u1_sub_mb, u1_mbpred_mode = 5 + u1_mb_type;
829 UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0;
830 WORD32 ret;
831 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
832 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
833
834 p_curr_ctxt->u1_mb_type = CAB_NON_BD16x16;
835 u1_sub_mb = !(u1_mb_type ^ B_8x8);
836
837 {
838 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
839 UWORD8 *pu1_num_ref_idx_lx_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active;
840 UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
841 UWORD8 u1_mbaff_field = (u1_mbaff & uc_field);
842 u1_dec_ref_l0 = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1;
843 u1_dec_ref_l1 = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1;
844 }
845
846 if(u1_sub_mb)
847 {
848 const UWORD8 u1_colz = ((PRED_8x8) << 6);
849 UWORD8 uc_i;
850 u1_mb_mc_mode = 0;
851 u1_num_mb_part = 4;
852 /* Reading the subMB type */
853 for(uc_i = 0; uc_i < 4; uc_i++)
854 {
855 UWORD8 u1_sub_mb_mode, u1_subMbPredModes;
856 u1_sub_mb_mode =
857 ih264d_parse_submb_type_cabac(1, ps_cab_env, ps_bitstrm, ps_dec->p_sub_mb_type_t);
858
859 if(u1_sub_mb_mode > 12) return ERROR_SUB_MB_TYPE;
860
861 u1_subMbPredModes = pu1_sub_mb_pred_modes[u1_sub_mb_mode];
862 u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[u1_sub_mb_mode];
863 u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredModes;
864 *pi1_ref_idx_l0++ = (u1_subMbPredModes & PRED_L0) ? u1_dec_ref_l0 : -1;
865 *pi1_ref_idx_l1++ = (u1_subMbPredModes & PRED_L1) ? u1_dec_ref_l1 : -1;
866 COPYTHECONTEXT("sub_mb_type", u1_sub_mb_mode);
867 /* Storing collocated Mb and SubMb mode information */
868 *pu1_col_info++ = (u1_colz | (pu1_sub_mb_mc_mode[u1_sub_mb_mode] << 4));
869 if(u1_sub_mb_mode != B_DIRECT_8x8)
870 {
871 if(u1_sub_mb_mode > B_BI_8x8)
872 {
873 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
874 }
875 }
876 else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag)
877 {
878 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
879 }
880 }
881 pi1_ref_idx_l0 -= 4;
882 pi1_ref_idx_l1 -= 4;
883 }
884 else
885 {
886 UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mbpred_mode];
887 UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mbpred_mode];
888 u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode;
889 u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode];
890 /* Storing collocated Mb and SubMb mode information */
891 *pu1_col_info++ = (u1_mb_mc_mode << 6);
892 if(u1_mb_mc_mode) *pu1_col_info++ = (u1_mb_mc_mode << 6);
893 u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8);
894 u4_mb_mc_mode <<= 16;
895 u4_mb_pred_mode = ((u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1) << 16;
896
897 *pi1_ref_idx_l0++ = (u1_mb_pred_mode_part0 & PRED_L0) ? u1_dec_ref_l0 : -1;
898 *pi1_ref_idx_l0-- = (u1_mb_pred_mode_part1 & PRED_L0) ? u1_dec_ref_l0 : -1;
899 *pi1_ref_idx_l1++ = (u1_mb_pred_mode_part0 & PRED_L1) ? u1_dec_ref_l1 : -1;
900 *pi1_ref_idx_l1-- = (u1_mb_pred_mode_part1 & PRED_L1) ? u1_dec_ref_l1 : -1;
901 }
902
903 /*Adding SVC extension code to get Motion Prediction Flags*/
904 {
905 UWORD8 uc_i, u1_mvp_l1, u1_mvp_l0;
906 UWORD8 *pu1_motion_pred_flag_l0;
907 UWORD8 *pu1_motion_pred_flag_l1;
908 WORD8 *pi1_ref_idx;
909 WORD8 *pi1_lft_cxt = ps_dec->pi1_left_ref_idx_ctxt_inc;
910 WORD8 *pi1_top_cxt = p_curr_ctxt->i1_ref_idx;
911
912 pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0];
913 *pu1_motion_pred_flag_l0 = 0;
914 pu1_motion_pred_flag_l1 = &ps_svc_cur_mb_info->au1_motion_pred_flag[1];
915 *pu1_motion_pred_flag_l1 = 0;
916
917 if(ps_svc_cur_mb_info->u1_crop_window_flag &&
918 ps_svc_slice_params->u1_adaptive_motion_prediction_flag)
919 {
920 pi1_ref_idx = pi1_ref_idx_l0;
921 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++, pi1_ref_idx++)
922 {
923 if(*pi1_ref_idx > 0)
924 {
925 u1_mvp_l0 = ih264d_decode_bin(0, ps_svc_lyr_dec->ps_motion_prediction_flag_l0,
926 ps_bitstrm, ps_cab_env);
927 COPYTHECONTEXT("SVC ext: u1_motion_prediction_flag_l0", u1_mvp_l0);
928
929 *pu1_motion_pred_flag_l0 |= (u1_mvp_l0 << uc_i);
930 if((u1_mvp_l0 & 0x01))
931 {
932 *pi1_ref_idx = -1;
933 }
934 }
935 }
936 pi1_ref_idx = pi1_ref_idx_l1;
937 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++, pi1_ref_idx++)
938 {
939 if(*pi1_ref_idx > 0)
940 {
941 u1_mvp_l1 = ih264d_decode_bin(0, ps_svc_lyr_dec->ps_motion_prediction_flag_l1,
942 ps_bitstrm, ps_cab_env);
943 COPYTHECONTEXT("SVC ext: u1_motion_prediction_flag_l1", u1_mvp_l1);
944
945 *pu1_motion_pred_flag_l1 |= (u1_mvp_l1 << uc_i);
946
947 if((u1_mvp_l1 & 0x01))
948 {
949 *pi1_ref_idx = -1;
950 }
951 }
952 }
953 }
954 else if(ps_svc_cur_mb_info->u1_crop_window_flag)
955 {
956 *pu1_motion_pred_flag_l0 = ps_svc_slice_params->u1_default_motion_prediction_flag
957 ? ((1 << u1_num_mb_part) - 1)
958 : 0;
959 *pu1_motion_pred_flag_l1 = ps_svc_slice_params->u1_default_motion_prediction_flag
960 ? ((1 << u1_num_mb_part) - 1)
961 : 0;
962 if(ps_svc_slice_params->u1_default_motion_prediction_flag)
963 {
964 pi1_ref_idx_l0[0] = -1;
965 pi1_ref_idx_l0[1] = -1;
966 pi1_ref_idx_l0[2] = -1;
967 pi1_ref_idx_l0[3] = -1;
968
969 pi1_ref_idx_l1[0] = -1;
970 pi1_ref_idx_l1[1] = -1;
971 pi1_ref_idx_l1[2] = -1;
972 pi1_ref_idx_l1[3] = -1;
973 }
974 }
975
976 ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 0, u1_dec_ref_l0, u1_mb_mc_mode,
977 pi1_ref_idx_l0, pi1_lft_cxt, pi1_top_cxt, ps_cab_env,
978 ps_bitstrm, ps_dec->p_ref_idx_t);
979
980 if(ret != OK)
981 {
982 return ret;
983 }
984 ret = ih264d_parse_ref_idx_cabac(u1_num_mb_part, 2, u1_dec_ref_l1, u1_mb_mc_mode,
985 pi1_ref_idx_l1, pi1_lft_cxt, pi1_top_cxt, ps_cab_env,
986 ps_bitstrm, ps_dec->p_ref_idx_t);
987
988 if(ret != OK)
989 {
990 return ret;
991 }
992 }
993 /* Read MotionVectors */
994 {
995 const UWORD8 *pu1_top_left_sub_mb_indx;
996 UWORD8 uc_j, uc_lx;
997 UWORD8 u1_mb_part_wd, u1_mb_part_ht;
998
999 const UWORD8 *pu1_sub_mb_indx_mod =
1000 (const UWORD8 *) gau1_ih264d_submb_indx_mod + (u1_sub_mb * 6);
1001 const UWORD8 *pu1_sub_mb_partw = (const UWORD8 *) gau1_ih264d_submb_partw;
1002 const UWORD8 *pu1_sub_mb_parth = (const UWORD8 *) gau1_ih264d_submb_parth;
1003 const UWORD8 *pu1_num_sub_mb_part = (const UWORD8 *) gau1_ih264d_num_submb_part;
1004 const UWORD8 *pu1_mb_partw = (const UWORD8 *) gau1_ih264d_mb_partw;
1005 const UWORD8 *pu1_mb_parth = (const UWORD8 *) gau1_ih264d_mb_parth;
1006
1007 UWORD8 u1_p_idx = 0;
1008 UWORD8 u1_num_submb_part;
1009 parse_part_params_t *ps_part;
1010 mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
1011 ps_part = ps_dec->ps_part;
1012
1013 /* Default initialization for non subMb case */
1014 u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode];
1015 u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode];
1016 u1_num_submb_part = 1;
1017
1018 /* Decoding the MV for the subMB */
1019 for(uc_lx = 0; uc_lx < 2; uc_lx++)
1020 {
1021 UWORD8 u1_sub_mb_num = 0;
1022 UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode;
1023 UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode;
1024 UWORD8 u1_mb_mc_mode_1, u1_pred_mode, uc_i;
1025 UWORD16 u2_sub_mb_num = 0x028A;
1026 UWORD8 u1_b2 = uc_lx << 1;
1027 u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0;
1028 /* Default for Cabac */
1029 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1);
1030 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
1031 {
1032 WORD8 i1_pred = (UWORD8) (u4_mb_pred_mode_tmp >> 24);
1033 u1_mb_mc_mode_1 = (UWORD8) (u4_mb_mc_mode_tmp >> 24);
1034 u4_mb_pred_mode_tmp <<= 8;
1035 u4_mb_mc_mode_tmp <<= 8;
1036
1037 /* subMb prediction mode */
1038 if(u1_sub_mb)
1039 {
1040 u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode_1];
1041 u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode_1];
1042 u1_sub_mb_num = u2_sub_mb_num >> 12;
1043 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode_1 << 1);
1044 u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode_1];
1045 u2_sub_mb_num = u2_sub_mb_num << 4;
1046 }
1047
1048 for(uc_j = 0; uc_j < u1_num_submb_part; uc_j++, pu1_top_left_sub_mb_indx++)
1049 {
1050 mv_pred_t *ps_mv;
1051 u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx;
1052 ps_mv = ps_mv_start + u1_sub_mb_num;
1053
1054 /* Storing Info for partitions, writing only once */
1055 if(uc_lx)
1056 {
1057 ps_part->u1_is_direct = (!i1_pred);
1058 ps_part->u1_pred_mode = i1_pred;
1059 ps_part->u1_sub_mb_num = u1_sub_mb_num;
1060 ps_part->u1_partheight = u1_mb_part_ht;
1061 ps_part->u1_partwidth = u1_mb_part_wd;
1062
1063 /* Increment partition Index */
1064 u1_p_idx++;
1065 ps_part++;
1066 }
1067
1068 ih264d_get_mvd_cabac(u1_sub_mb_num, u1_b2, u1_mb_part_wd, u1_mb_part_ht,
1069 (UWORD8) (i1_pred & u1_pred_mode), ps_dec, ps_mv);
1070 }
1071 }
1072 }
1073 /* write back to the scratch partition info */
1074 ps_dec->ps_part = ps_part;
1075 ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part;
1076 }
1077
1078 return OK;
1079 }
1080
1081 /*!
1082 **************************************************************************
1083 * \if Function name : isvcd_parse_bmb_non_direct_cavlc\endif
1084 *
1085 * \brief
1086 * Implements sub_mb_pred() of 7.3.5.2. & mb_pred() of 7.3.5.1
1087 *
1088 * \return
1089 * None.
1090 *
1091 **************************************************************************
1092 */
isvcd_parse_bmb_non_direct_cavlc(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_mb_info_t * ps_cur_mb_info,dec_svc_mb_info_t * ps_svc_cur_mb_info,UWORD8 u1_mb_num,UWORD8 u1_num_mbsNby2)1093 WORD32 isvcd_parse_bmb_non_direct_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
1094 dec_mb_info_t *ps_cur_mb_info,
1095 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num,
1096 UWORD8 u1_num_mbsNby2)
1097 {
1098 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1099 dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
1100 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
1101 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
1102 UWORD8 *pu1_sub_mb_pred_modes = (UWORD8 *) (gau1_ih264d_submb_pred_modes) + 4;
1103 const UWORD8(*pu1_mb_pred_modes)[32] = (const UWORD8(*)[32]) gau1_ih264d_mb_pred_modes;
1104 const UWORD8 *pu1_num_mb_part = (const UWORD8 *) gau1_ih264d_num_mb_part;
1105 const UWORD8 *pu1_sub_mb_mc_mode = (const UWORD8 *) (gau1_ih264d_submb_mc_mode) + 4;
1106 parse_pmbarams_t *ps_parse_mb_data = ps_dec->ps_parse_mb_data + u1_num_mbsNby2;
1107 UWORD8 *pu1_col_info = ps_parse_mb_data->u1_col_info;
1108 WORD8(*pi1_ref_idx)[MAX_REFIDX_INFO_PER_MB] = ps_parse_mb_data->i1_ref_idx;
1109 UWORD8 u1_mb_type = ps_cur_mb_info->u1_mb_type;
1110 UWORD8 u1_mb_mc_mode, u1_num_mb_part, u1_sub_mb = !(u1_mb_type ^ B_8x8);
1111 UWORD32 u4_mb_mc_mode = 0, u4_mb_pred_mode = 0;
1112 WORD32 ret = OK;
1113 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
1114 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1115
1116 if(u1_sub_mb)
1117 {
1118 UWORD8 uc_i;
1119 u1_mb_mc_mode = 0;
1120 u1_num_mb_part = 4;
1121 /* Reading the subMB type */
1122 for(uc_i = 0; uc_i < 4; uc_i++)
1123 {
1124 UWORD32 ui_sub_mb_mode;
1125 // Inlined ih264d_uev
1126 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
1127 UWORD32 u4_word, u4_ldz;
1128
1129 /***************************************************************/
1130 /* Find leading zeros in next 32 bits */
1131 /***************************************************************/
1132 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
1133 u4_ldz = CLZ(u4_word);
1134 /* Flush the ps_bitstrm */
1135 u4_bitstream_offset += (u4_ldz + 1);
1136 /* Read the suffix from the ps_bitstrm */
1137 u4_word = 0;
1138 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
1139 *pu4_bitstrm_ofst = u4_bitstream_offset;
1140 ui_sub_mb_mode = ((1 << u4_ldz) + u4_word - 1);
1141 // Inlined ih264d_uev
1142 if(ui_sub_mb_mode > 12)
1143 return ERROR_SUB_MB_TYPE;
1144 else
1145 {
1146 UWORD8 u1_subMbPredMode = pu1_sub_mb_pred_modes[ui_sub_mb_mode];
1147 u4_mb_mc_mode = (u4_mb_mc_mode << 8) | pu1_sub_mb_mc_mode[ui_sub_mb_mode];
1148 u4_mb_pred_mode = (u4_mb_pred_mode << 8) | u1_subMbPredMode;
1149 pi1_ref_idx[0][uc_i] = ((u1_subMbPredMode & PRED_L0) - 1) >> 1;
1150 pi1_ref_idx[1][uc_i] = ((u1_subMbPredMode & PRED_L1) - 1) >> 1;
1151 COPYTHECONTEXT("sub_mb_type", u1_subMbPredMode);
1152 }
1153 /* Storing collocated Mb and SubMb mode information */
1154 *pu1_col_info++ = ((PRED_8x8) << 6) | ((pu1_sub_mb_mc_mode[ui_sub_mb_mode] << 4));
1155 if(ui_sub_mb_mode != B_DIRECT_8x8)
1156 {
1157 if(ui_sub_mb_mode > B_BI_8x8)
1158 {
1159 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
1160 }
1161 }
1162 else if(!ps_dec->s_high_profile.u1_direct_8x8_inference_flag)
1163 {
1164 ps_dec->s_high_profile.u1_no_submb_part_size_lt8x8_flag = 0;
1165 }
1166 }
1167 }
1168 else
1169 {
1170 UWORD8 u1_mb_pred_mode_idx = 5 + u1_mb_type;
1171 UWORD8 u1_mb_pred_mode_part0 = pu1_mb_pred_modes[0][u1_mb_pred_mode_idx];
1172 UWORD8 u1_mb_pred_mode_part1 = pu1_mb_pred_modes[1][u1_mb_pred_mode_idx];
1173 u1_mb_mc_mode = ps_cur_mb_info->u1_mb_mc_mode;
1174 u1_num_mb_part = pu1_num_mb_part[u1_mb_mc_mode];
1175
1176 pi1_ref_idx[0][0] = ((u1_mb_pred_mode_part0 & PRED_L0) - 1) >> 1;
1177 pi1_ref_idx[1][0] = ((u1_mb_pred_mode_part0 & PRED_L1) - 1) >> 1;
1178 pi1_ref_idx[0][1] = ((u1_mb_pred_mode_part1 & PRED_L0) - 1) >> 1;
1179 pi1_ref_idx[1][1] = ((u1_mb_pred_mode_part1 & PRED_L1) - 1) >> 1;
1180
1181 u4_mb_pred_mode = (u1_mb_pred_mode_part0 << 8) | u1_mb_pred_mode_part1;
1182 u4_mb_mc_mode = u1_mb_mc_mode | (u1_mb_mc_mode << 8);
1183 u4_mb_mc_mode <<= 16;
1184 u4_mb_pred_mode <<= 16;
1185
1186 /* Storing collocated Mb and SubMb mode information */
1187 *pu1_col_info++ = (u1_mb_mc_mode << 6);
1188 if(u1_mb_mc_mode) *pu1_col_info++ = (u1_mb_mc_mode << 6);
1189 }
1190
1191 {
1192 UWORD8 uc_i;
1193 UWORD8 *pu1_motion_pred_flag_l0;
1194 UWORD8 *pu1_motion_pred_flag_l1;
1195 UWORD8 u1_mvp_l1;
1196 UWORD8 u1_mvp_l0;
1197
1198 pu1_motion_pred_flag_l0 = &ps_svc_cur_mb_info->au1_motion_pred_flag[0];
1199 *pu1_motion_pred_flag_l0 = 0;
1200 pu1_motion_pred_flag_l1 = &ps_svc_cur_mb_info->au1_motion_pred_flag[1];
1201 *pu1_motion_pred_flag_l1 = 0;
1202
1203 if(ps_svc_cur_mb_info->u1_crop_window_flag &&
1204 ps_svc_slice_params->u1_adaptive_motion_prediction_flag)
1205 {
1206 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
1207 {
1208 if(pi1_ref_idx[0][uc_i] > -1)
1209 {
1210 u1_mvp_l0 = ih264d_get_bit_h264(ps_bitstrm);
1211 COPYTHECONTEXT("SVC ext: ps_motion_prediction_flag_l0", u1_mvp_l0);
1212 *pu1_motion_pred_flag_l0 |= (u1_mvp_l0 << uc_i);
1213 }
1214 }
1215
1216 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
1217 {
1218 if(pi1_ref_idx[1][uc_i] > -1)
1219 {
1220 u1_mvp_l1 = ih264d_get_bit_h264(ps_bitstrm);
1221 COPYTHECONTEXT("SVC ext: ps_motion_prediction_flag_l1", u1_mvp_l1);
1222 *pu1_motion_pred_flag_l1 |= (u1_mvp_l1 << uc_i);
1223 }
1224 }
1225 }
1226 else if(ps_svc_cur_mb_info->u1_crop_window_flag)
1227 {
1228 *pu1_motion_pred_flag_l0 = ps_svc_slice_params->u1_default_motion_prediction_flag
1229 ? ((1 << u1_num_mb_part) - 1)
1230 : 0;
1231 *pu1_motion_pred_flag_l1 = ps_svc_slice_params->u1_default_motion_prediction_flag
1232 ? ((1 << u1_num_mb_part) - 1)
1233 : 0;
1234 }
1235
1236 {
1237 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
1238 UWORD8 uc_field = ps_cur_mb_info->u1_mb_field_decodingflag;
1239 UWORD8 *pu1_num_ref_idx_lx_active = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active;
1240 const UWORD8 u1_mbaff_field = (u1_mbaff & uc_field);
1241 UWORD8 u4_num_ref_idx_lx_active;
1242
1243 u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[0] << u1_mbaff_field) - 1;
1244
1245 if(u4_num_ref_idx_lx_active)
1246 {
1247 if(1 == u4_num_ref_idx_lx_active)
1248 isvcd_parse_bmb_ref_index_cavlc_range1(u1_num_mb_part, ps_bitstrm,
1249 pi1_ref_idx[0], u4_num_ref_idx_lx_active,
1250 pu1_motion_pred_flag_l0);
1251 else
1252 {
1253 isvcd_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm, pi1_ref_idx[0],
1254 u4_num_ref_idx_lx_active,
1255 pu1_motion_pred_flag_l0);
1256 if(ret != OK) return ret;
1257 }
1258 }
1259
1260 u4_num_ref_idx_lx_active = (pu1_num_ref_idx_lx_active[1] << u1_mbaff_field) - 1;
1261
1262 if(u4_num_ref_idx_lx_active)
1263 {
1264 if(1 == u4_num_ref_idx_lx_active)
1265 isvcd_parse_bmb_ref_index_cavlc_range1(u1_num_mb_part, ps_bitstrm,
1266 pi1_ref_idx[1], u4_num_ref_idx_lx_active,
1267 pu1_motion_pred_flag_l1);
1268 else
1269 {
1270 ret = isvcd_parse_bmb_ref_index_cavlc(u1_num_mb_part, ps_bitstrm,
1271 pi1_ref_idx[1], u4_num_ref_idx_lx_active,
1272 pu1_motion_pred_flag_l1);
1273 if(ret != OK) return ret;
1274 }
1275 }
1276 }
1277 }
1278 /* Read MotionVectors */
1279 {
1280 const UWORD8 *pu1_top_left_sub_mb_indx;
1281 const UWORD8 *pu1_sub_mb_indx_mod =
1282 (const UWORD8 *) (gau1_ih264d_submb_indx_mod) + (u1_sub_mb * 6);
1283 const UWORD8 *pu1_sub_mb_partw = (const UWORD8 *) gau1_ih264d_submb_partw;
1284 const UWORD8 *pu1_sub_mb_parth = (const UWORD8 *) gau1_ih264d_submb_parth;
1285 const UWORD8 *pu1_num_sub_mb_part = (const UWORD8 *) gau1_ih264d_num_submb_part;
1286 const UWORD8 *pu1_mb_partw = (const UWORD8 *) gau1_ih264d_mb_partw;
1287 const UWORD8 *pu1_mb_parth = (const UWORD8 *) gau1_ih264d_mb_parth;
1288 UWORD8 u1_p_idx = 0, u1_num_submb_part, uc_lx;
1289 parse_part_params_t *ps_part;
1290 mv_pred_t *ps_mv_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
1291 UWORD8 u1_mb_part_wd, u1_mb_part_ht;
1292
1293 ps_part = ps_dec->ps_part;
1294 /* Default Initialization for Non subMb Case Mode */
1295 u1_mb_part_wd = pu1_mb_partw[u1_mb_mc_mode];
1296 u1_mb_part_ht = pu1_mb_parth[u1_mb_mc_mode];
1297 u1_num_submb_part = 1;
1298
1299 /* Decoding the MV for the subMB */
1300 for(uc_lx = 0; uc_lx < 2; uc_lx++)
1301 {
1302 UWORD8 u1_sub_mb_num = 0, u1_pred_mode, uc_i;
1303 UWORD32 u4_mb_mc_mode_tmp = u4_mb_mc_mode;
1304 UWORD32 u4_mb_pred_mode_tmp = u4_mb_pred_mode;
1305 UWORD16 u2_sub_mb_num = 0x028A; // for sub mb case
1306 UWORD8 u1_b2 = uc_lx << 1;
1307 u1_pred_mode = (uc_lx) ? PRED_L1 : PRED_L0;
1308 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1);
1309
1310 for(uc_i = 0; uc_i < u1_num_mb_part; uc_i++)
1311 {
1312 UWORD8 u1_mb_mc_mode, uc_j;
1313 UWORD8 i1_pred = u4_mb_pred_mode_tmp >> 24;
1314 u1_mb_mc_mode = u4_mb_mc_mode_tmp >> 24;
1315 u4_mb_pred_mode_tmp <<= 8;
1316 u4_mb_mc_mode_tmp <<= 8;
1317 /* subMb prediction mode */
1318 if(u1_sub_mb)
1319 {
1320 u1_mb_part_wd = pu1_sub_mb_partw[u1_mb_mc_mode];
1321 u1_mb_part_ht = pu1_sub_mb_parth[u1_mb_mc_mode];
1322 u1_sub_mb_num = u2_sub_mb_num >> 12;
1323 u1_num_submb_part = pu1_num_sub_mb_part[u1_mb_mc_mode];
1324 pu1_top_left_sub_mb_indx = pu1_sub_mb_indx_mod + (u1_mb_mc_mode << 1);
1325 u2_sub_mb_num <<= 4;
1326 }
1327 for(uc_j = 0; uc_j < u1_num_submb_part; uc_j++, pu1_top_left_sub_mb_indx++)
1328 {
1329 mv_pred_t *ps_mv;
1330 u1_sub_mb_num = u1_sub_mb_num + *pu1_top_left_sub_mb_indx;
1331 ps_mv = ps_mv_start + u1_sub_mb_num;
1332
1333 /* Storing Info for partitions, writing only once */
1334 if(uc_lx)
1335 {
1336 ps_part->u1_is_direct = (!i1_pred);
1337 ps_part->u1_pred_mode = i1_pred;
1338 ps_part->u1_sub_mb_num = u1_sub_mb_num;
1339 ps_part->u1_partheight = u1_mb_part_ht;
1340 ps_part->u1_partwidth = u1_mb_part_wd;
1341 /* Increment partition Index */
1342 u1_p_idx++;
1343 ps_part++;
1344 }
1345
1346 if(i1_pred & u1_pred_mode)
1347 {
1348 WORD16 i2_mvx, i2_mvy;
1349 // inlining ih264d_sev
1350 {
1351 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
1352 UWORD32 u4_word, u4_ldz, u4_abs_val;
1353
1354 /***************************************************************/
1355 /* Find leading zeros in next 32 bits */
1356 /***************************************************************/
1357 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
1358 u4_ldz = CLZ(u4_word);
1359
1360 /* Flush the ps_bitstrm */
1361 u4_bitstream_offset += (u4_ldz + 1);
1362
1363 /* Read the suffix from the ps_bitstrm */
1364 u4_word = 0;
1365 if(u4_ldz)
1366 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
1367
1368 *pu4_bitstrm_ofst = u4_bitstream_offset;
1369 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
1370
1371 if(u4_word & 0x1)
1372 i2_mvx = (-(WORD32) u4_abs_val);
1373 else
1374 i2_mvx = (u4_abs_val);
1375 }
1376 // inlinined ih264d_sev
1377 {
1378 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
1379 UWORD32 u4_word, u4_ldz, u4_abs_val;
1380
1381 /***************************************************************/
1382 /* Find leading zeros in next 32 bits */
1383 /***************************************************************/
1384 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
1385 u4_ldz = CLZ(u4_word);
1386
1387 /* Flush the ps_bitstrm */
1388 u4_bitstream_offset += (u4_ldz + 1);
1389
1390 /* Read the suffix from the ps_bitstrm */
1391 u4_word = 0;
1392 if(u4_ldz)
1393 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
1394
1395 *pu4_bitstrm_ofst = u4_bitstream_offset;
1396 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
1397
1398 if(u4_word & 0x1)
1399 i2_mvy = (-(WORD32) u4_abs_val);
1400 else
1401 i2_mvy = (u4_abs_val);
1402 }
1403 // inlinined ih264d_sev
1404 /* Storing Mv residuals */
1405 ps_mv->i2_mv[u1_b2] = i2_mvx;
1406 ps_mv->i2_mv[u1_b2 + 1] = i2_mvy;
1407 }
1408 }
1409 }
1410 }
1411 /* write back to the scratch partition info */
1412 ps_dec->ps_part = ps_part;
1413 ps_parse_mb_data->u1_num_part = u1_sub_mb ? u1_p_idx : u1_num_mb_part;
1414 }
1415 return OK;
1416 }
1417
1418 /*!
1419 **************************************************************************
1420 * \if Function name : ih264d_decode_ebslice \endif
1421 *
1422 * \brief
1423 * Decodes an EB Slice
1424 *
1425 *
1426 * \return
1427 * 0 on Success and Error code otherwise
1428 **************************************************************************
1429 */
isvcd_parse_ebslice(svc_dec_lyr_struct_t * ps_svc_lyr_dec,UWORD16 u2_first_mb_in_slice)1430 WORD32 isvcd_parse_ebslice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
1431 {
1432 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1433 WORD32 i_status = OK;
1434 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1435 dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
1436 dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
1437 dec_svc_seq_params_t *ps_subset_seq;
1438 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
1439 dec_subset_seq_params_t *ps_sps_svc_ext = NULL;
1440 dec_nal_unit_svc_ext_params_t *ps_nal_svc_ext = NULL;
1441 UWORD8 u1_ref_idx_re_flag_lx;
1442 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
1443 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
1444 UWORD64 u8_ref_idx_l0, u8_ref_idx_l1;
1445 UWORD32 u4_temp;
1446 WORD32 i_temp;
1447 WORD32 ret;
1448
1449 ps_nal_svc_ext = ps_svc_lyr_dec->ps_nal_svc_ext;
1450 ps_subset_seq = ps_svc_lyr_dec->ps_cur_subset_sps;
1451 ps_sps_svc_ext = &ps_subset_seq->s_sps_svc_ext;
1452 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1453
1454 /*--------------------------------------------------------------------*/
1455 /* Read remaining contents of the slice header */
1456 /*--------------------------------------------------------------------*/
1457 {
1458 WORD8 *pi1_buf;
1459 WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv;
1460 WORD32 *pi4_mv = (WORD32 *) pi2_mv;
1461 WORD16 *pi16_refFrame;
1462 pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame;
1463 pi16_refFrame = (WORD16 *) pi1_buf;
1464 *pi4_mv = 0;
1465 *(pi4_mv + 1) = 0;
1466 *pi16_refFrame = OUT_OF_RANGE_REF;
1467 ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8) -1;
1468 ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8) -1;
1469 }
1470
1471 if(0 == ps_svc_lyr_dec->ps_nal_svc_ext->u1_quality_id)
1472 {
1473 ps_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(ps_bitstrm);
1474 COPYTHECONTEXT("Slice Header SVC ext: num_ref_idx_override_flag",
1475 ps_slice->u1_num_ref_idx_active_override_flag);
1476
1477 u8_ref_idx_l0 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0];
1478 u8_ref_idx_l1 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[1];
1479 if(ps_slice->u1_num_ref_idx_active_override_flag)
1480 {
1481 u8_ref_idx_l0 = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1482 COPYTHECONTEXT("Slice Header SVC ext: num_ref_idx_l0_active_minus1", u8_ref_idx_l0 - 1);
1483
1484 u8_ref_idx_l1 = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1485 COPYTHECONTEXT("Slice Header SVC ext: num_ref_idx_l1_active_minus1", u8_ref_idx_l1 - 1);
1486 }
1487
1488 {
1489 UWORD8 u1_max_ref_idx = H264_MAX_REF_PICS;
1490 if(ps_slice->u1_field_pic_flag)
1491 {
1492 u1_max_ref_idx = H264_MAX_REF_PICS << 1;
1493 }
1494 if((u8_ref_idx_l0 >= u1_max_ref_idx) || (u8_ref_idx_l1 >= u1_max_ref_idx))
1495 {
1496 return ERROR_NUM_REF;
1497 }
1498 ps_slice->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_ref_idx_l0;
1499 ps_slice->u1_num_ref_idx_lx_active[1] = (UWORD8) u8_ref_idx_l1;
1500 }
1501
1502 ih264d_init_ref_idx_lx_b(ps_dec);
1503 /* Store the value for future slices in the same picture */
1504 ps_dec->u1_num_ref_idx_lx_active_prev = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0];
1505
1506 u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm);
1507 COPYTHECONTEXT("Slice Header SVC ext: ref_pic_list_reordering_flag_l0",
1508 u1_ref_idx_re_flag_lx);
1509
1510 /* Modified temporarily */
1511 if(u1_ref_idx_re_flag_lx)
1512 {
1513 WORD8 ret;
1514 ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
1515 ret = ih264d_ref_idx_reordering(ps_dec, 0);
1516 if(ret == -1) return ERROR_REFIDX_ORDER_T;
1517 }
1518 else
1519 ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0];
1520
1521 u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm);
1522 COPYTHECONTEXT("Slice Header SVC ext: ref_pic_list_reordering_flag_l1",
1523 u1_ref_idx_re_flag_lx);
1524
1525 /* Modified temporarily */
1526 if(u1_ref_idx_re_flag_lx)
1527 {
1528 WORD8 ret;
1529 ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_mod_dpb[1];
1530 ret = ih264d_ref_idx_reordering(ps_dec, 1);
1531 if(ret == -1) return ERROR_REFIDX_ORDER_T;
1532 }
1533 else
1534 ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_init_dpb[1];
1535
1536 /* Create refIdx to POC mapping */
1537 {
1538 void **ppv_map_ref_idx_to_poc_lx;
1539 WORD8 idx;
1540 struct pic_buffer_t *ps_pic;
1541
1542 ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0;
1543 ppv_map_ref_idx_to_poc_lx[0] = 0;
1544 ppv_map_ref_idx_to_poc_lx++;
1545 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
1546 {
1547 ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
1548 ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1);
1549 }
1550
1551 ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1;
1552
1553 ppv_map_ref_idx_to_poc_lx[0] = 0;
1554 ppv_map_ref_idx_to_poc_lx++;
1555 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; idx++)
1556 {
1557 ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx];
1558 ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1);
1559 }
1560
1561 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1562 {
1563 void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b;
1564
1565 ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L0;
1566 ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L0;
1567
1568 ppv_map_ref_idx_to_poc_lx_t[0] = 0;
1569 ppv_map_ref_idx_to_poc_lx_t++;
1570 ppv_map_ref_idx_to_poc_lx_b[0] = 0;
1571 ppv_map_ref_idx_to_poc_lx_b++;
1572 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
1573 {
1574 ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
1575 ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1);
1576 ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1);
1577
1578 ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1;
1579 ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1;
1580
1581 ppv_map_ref_idx_to_poc_lx_t += 2;
1582 ppv_map_ref_idx_to_poc_lx_b += 2;
1583 }
1584
1585 ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1;
1586 ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1;
1587
1588 ppv_map_ref_idx_to_poc_lx_t[0] = 0;
1589 ppv_map_ref_idx_to_poc_lx_t++;
1590 ppv_map_ref_idx_to_poc_lx_b[0] = 0;
1591 ppv_map_ref_idx_to_poc_lx_b++;
1592 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; idx++)
1593 {
1594 UWORD8 u1_tmp_idx = idx << 1;
1595 ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx];
1596 ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx] = (ps_pic->pu1_buf1);
1597 ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx + 1] = (ps_pic->pu1_buf1);
1598
1599 ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx] = (ps_pic->pu1_buf1) + 1;
1600 ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx + 1] = (ps_pic->pu1_buf1) + 1;
1601 }
1602 }
1603
1604 /* BS is moved post recon gen in SVC ext*/
1605 if(ps_dec->u4_num_cores >= 2)
1606 {
1607 WORD32 num_entries;
1608 WORD32 size;
1609 num_entries = MAX_FRAMES;
1610 if((1 >= ps_dec->ps_cur_sps->u1_num_ref_frames) && (0 == ps_dec->i4_display_delay))
1611 {
1612 num_entries = 1;
1613 }
1614
1615 num_entries = ((2 * num_entries) + 1);
1616 num_entries *= 2;
1617
1618 size = num_entries * sizeof(void *);
1619 size += PAD_MAP_IDX_POC * sizeof(void *);
1620
1621 memcpy((void *) ps_dec->ps_parse_cur_slice->ppv_map_ref_idx_to_poc,
1622 ps_dec->ppv_map_ref_idx_to_poc, size);
1623 }
1624 }
1625
1626 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag &&
1627 (ps_dec->ps_cur_slice->u1_field_pic_flag == 0))
1628 {
1629 ih264d_convert_frm_mbaff_list(ps_dec);
1630 }
1631
1632 if(ps_pps->u1_wted_bipred_idc == 1)
1633 {
1634 if(!ps_nal_svc_ext->u1_no_inter_layer_pred_flag)
1635 {
1636 ps_svc_slice_params->u1_base_pred_weight_table_flag =
1637 ih264d_get_bit_h264(ps_bitstrm);
1638 COPYTHECONTEXT("Slice Header SVC ext: u1_base_pred_weight_table_flag",
1639 ps_svc_slice_params->u1_base_pred_weight_table_flag);
1640 }
1641
1642 if(ps_nal_svc_ext->u1_no_inter_layer_pred_flag ||
1643 !ps_svc_slice_params->u1_base_pred_weight_table_flag)
1644 {
1645 ih264d_parse_pred_weight_table(ps_slice, ps_bitstrm);
1646
1647 ih264d_form_pred_weight_matrix(ps_dec);
1648 ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
1649 }
1650 }
1651 else if(ps_pps->u1_wted_bipred_idc == 2)
1652 {
1653 /* Implicit Weighted prediction */
1654 ps_slice->u2_log2Y_crwd = 0x0505;
1655 ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
1656 ih264d_get_implicit_weights(ps_dec);
1657 }
1658 else
1659 ps_dec->ps_cur_slice->u2_log2Y_crwd = 0;
1660
1661 ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd;
1662
1663 /* G050 */
1664 if(ps_slice->u1_nal_ref_idc != 0)
1665 {
1666 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
1667 {
1668 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1669 dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
1670 UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
1671
1672 ps_pps->ps_sps = ps_dec->ps_cur_sps;
1673 if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
1674 ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
1675
1676 i_temp = ih264d_read_mmco_commands(ps_dec);
1677
1678 ps_pps->ps_sps = ps_sps_tmp;
1679 ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
1680
1681 if(i_temp < 0)
1682 {
1683 return ERROR_DBP_MANAGER_T;
1684 }
1685 ps_dec->u4_bitoffset = i_temp;
1686 }
1687 else
1688 ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
1689
1690 if(!ps_sps_svc_ext->u1_slice_header_restriction_flag)
1691 {
1692 ps_svc_slice_params->u1_store_ref_base_pic_flag = ih264d_get_bit_h264(ps_bitstrm);
1693 COPYTHECONTEXT("SPS_SVC_EXT: u1_store_ref_base_pic_flag",
1694 ps_svc_slice_params->u1_store_ref_base_pic_flag);
1695
1696 if(0 != ps_svc_slice_params->u1_store_ref_base_pic_flag)
1697 {
1698 return NOT_OK;
1699 }
1700 if(((1 == ps_nal_svc_ext->u1_use_ref_base_pic_flag) ||
1701 (1 == ps_svc_slice_params->u1_store_ref_base_pic_flag)) &&
1702 (!ps_nal_svc_ext->u1_idr_flag))
1703 {
1704 i_status = isvcd_dec_ref_base_pic_marking(
1705 &ps_svc_slice_params->s_ref_base_pic_marking_svc_ext, ps_bitstrm);
1706 if(i_status != OK)
1707 {
1708 return i_status;
1709 }
1710 }
1711 }
1712 }
1713 }
1714 /* G050 */
1715 /*Code is present in standard but omitted in the reference code*/
1716 if(ps_pps->u1_entropy_coding_mode == CABAC)
1717 {
1718 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1719 if(u4_temp > MAX_CABAC_INIT_IDC)
1720 {
1721 return ERROR_INV_SLICE_HDR_T;
1722 }
1723 ps_slice->u1_cabac_init_idc = u4_temp;
1724 COPYTHECONTEXT("Slice Header SVC ext: cabac_init_idc", ps_slice->u1_cabac_init_idc);
1725 }
1726
1727 {
1728 /* Read slice_qp_delta */
1729 WORD64 i8_temp =
1730 (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1731 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP))
1732 {
1733 return ERROR_INV_RANGE_QP_T;
1734 }
1735 ps_slice->u1_slice_qp = (UWORD8) i8_temp;
1736 COPYTHECONTEXT("Slice Header SVC ext: slice_qp_delta",
1737 (WORD8) (ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp));
1738 }
1739 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
1740 {
1741 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1742 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
1743 {
1744 return ERROR_INV_SLICE_HDR_T;
1745 }
1746 COPYTHECONTEXT("Slice Header SVC ext: disable_deblocking_filter_idc", u4_temp);
1747 ps_slice->u1_disable_dblk_filter_idc = u4_temp;
1748 if(u4_temp != 1)
1749 {
1750 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
1751 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
1752 {
1753 return ERROR_INV_SLICE_HDR_T;
1754 }
1755 ps_slice->i1_slice_alpha_c0_offset = i_temp;
1756 COPYTHECONTEXT("Slice Header SVC ext: slice_alpha_c0_offset_div2",
1757 ps_slice->i1_slice_alpha_c0_offset >> 1);
1758
1759 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
1760 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
1761 {
1762 return ERROR_INV_SLICE_HDR_T;
1763 }
1764 ps_slice->i1_slice_beta_offset = i_temp;
1765 COPYTHECONTEXT("Slice Header SVC ext: slice_beta_offset_div2",
1766 ps_slice->i1_slice_beta_offset >> 1);
1767 }
1768 else
1769 {
1770 ps_slice->i1_slice_alpha_c0_offset = 0;
1771 ps_slice->i1_slice_beta_offset = 0;
1772 }
1773 }
1774 else
1775 {
1776 ps_slice->u1_disable_dblk_filter_idc = 0;
1777 ps_slice->i1_slice_alpha_c0_offset = 0;
1778 ps_slice->i1_slice_beta_offset = 0;
1779 }
1780
1781 /* add the remaining part of the code for svc extension from reference */
1782 ret = isvcd_set_default_slice_header_ext(ps_svc_lyr_dec);
1783 if(ret != OK)
1784 {
1785 return ERROR_INV_SLICE_HDR_T;
1786 }
1787
1788 ret = isvcd_parse_slice_header(ps_svc_lyr_dec);
1789 if(ret != OK)
1790 {
1791 return ERROR_INV_SLICE_HDR_T;
1792 }
1793
1794 ps_dec->u1_slice_header_done = 2;
1795 if(!ps_svc_slice_params->u1_slice_skip_flag)
1796 {
1797 if(ps_pps->u1_entropy_coding_mode)
1798 {
1799 SWITCHOFFTRACE;
1800 SWITCHONTRACECABAC;
1801 ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext =
1802 isvcd_parse_inter_slice_data_cabac_enh_lyr;
1803 ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext = isvcd_parse_bmb_cabac;
1804 isvcd_init_cabac_contexts(B_SLICE, ps_dec);
1805
1806 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1807 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
1808 else
1809 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
1810 }
1811 else
1812 {
1813 SWITCHONTRACE;
1814 SWITCHOFFTRACECABAC;
1815 ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext =
1816 isvcd_parse_inter_slice_data_cavlc_enh_lyr;
1817 ps_svc_lyr_dec->pf_parse_inter_mb_svc_ext = isvcd_parse_bmb_cavlc;
1818 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1819 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
1820 else
1821 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
1822 }
1823 }
1824 else
1825 {
1826 return ERROR_FEATURE_UNAVAIL;
1827 }
1828
1829 ret = ih264d_cal_col_pic(ps_dec);
1830 if(ret != OK) return ret;
1831 ps_dec->u1_B = 1;
1832 ps_dec->pf_mvpred_ref_tfr_nby2mb = isvcd_mv_pred_ref_tfr_nby2_ebmb;
1833 ret = ps_svc_lyr_dec->pf_parse_inter_slice_svc_ext(ps_svc_lyr_dec, ps_slice,
1834 u2_first_mb_in_slice);
1835 if(ret != OK) return ret;
1836
1837 return OK;
1838 }
1839
1840 /*!
1841 **************************************************************************
1842 * \if Function name : isvcd_parse_bslice \endif
1843 *
1844 * \brief
1845 * Decodes a B Slice
1846 *
1847 *
1848 * \return
1849 * 0 on Success and Error code otherwise
1850 **************************************************************************
1851 */
isvcd_parse_bslice(svc_dec_lyr_struct_t * ps_svc_lyr_dec,UWORD16 u2_first_mb_in_slice)1852 WORD32 isvcd_parse_bslice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
1853 {
1854 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1855 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1856 dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
1857 dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
1858 UWORD8 u1_ref_idx_re_flag_lx;
1859 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
1860 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
1861 UWORD64 u8_ref_idx_l0, u8_ref_idx_l1;
1862 UWORD32 u4_temp;
1863 WORD32 i_temp;
1864 WORD32 ret;
1865
1866 /*--------------------------------------------------------------------*/
1867 /* Read remaining contents of the slice header */
1868 /*--------------------------------------------------------------------*/
1869 {
1870 WORD8 *pi1_buf;
1871 WORD16 *pi2_mv = ps_dec->s_default_mv_pred.i2_mv;
1872 WORD32 *pi4_mv = (WORD32 *) pi2_mv;
1873 WORD16 *pi16_refFrame;
1874 pi1_buf = ps_dec->s_default_mv_pred.i1_ref_frame;
1875 pi16_refFrame = (WORD16 *) pi1_buf;
1876 *pi4_mv = 0;
1877 *(pi4_mv + 1) = 0;
1878 *pi16_refFrame = OUT_OF_RANGE_REF;
1879 ps_dec->s_default_mv_pred.u1_col_ref_pic_idx = (UWORD8) -1;
1880 ps_dec->s_default_mv_pred.u1_pic_type = (UWORD8) -1;
1881 }
1882
1883 ps_slice->u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264(ps_bitstrm);
1884 COPYTHECONTEXT("SH: num_ref_idx_override_flag", ps_slice->u1_num_ref_idx_active_override_flag);
1885
1886 u8_ref_idx_l0 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[0];
1887 u8_ref_idx_l1 = ps_dec->ps_cur_pps->u1_num_ref_idx_lx_active[1];
1888 if(ps_slice->u1_num_ref_idx_active_override_flag)
1889 {
1890 u8_ref_idx_l0 = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1891 COPYTHECONTEXT("SH: num_ref_idx_l0_active_minus1", u8_ref_idx_l0 - 1);
1892
1893 u8_ref_idx_l1 = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1894 COPYTHECONTEXT("SH: num_ref_idx_l1_active_minus1", u8_ref_idx_l1 - 1);
1895 }
1896
1897 {
1898 UWORD8 u1_max_ref_idx = H264_MAX_REF_PICS;
1899 if(ps_slice->u1_field_pic_flag)
1900 {
1901 u1_max_ref_idx = H264_MAX_REF_PICS << 1;
1902 }
1903 if((u8_ref_idx_l0 >= u1_max_ref_idx) || (u8_ref_idx_l1 >= u1_max_ref_idx))
1904 {
1905 return ERROR_NUM_REF;
1906 }
1907 ps_slice->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_ref_idx_l0;
1908 ps_slice->u1_num_ref_idx_lx_active[1] = (UWORD8) u8_ref_idx_l1;
1909 }
1910
1911 ih264d_init_ref_idx_lx_b(ps_dec);
1912 /* Store the value for future slices in the same picture */
1913 ps_dec->u1_num_ref_idx_lx_active_prev = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0];
1914
1915 u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm);
1916 COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l0", u1_ref_idx_re_flag_lx);
1917
1918 /* Modified temporarily */
1919 if(u1_ref_idx_re_flag_lx)
1920 {
1921 WORD8 ret;
1922 ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_mod_dpb[0];
1923 ret = ih264d_ref_idx_reordering(ps_dec, 0);
1924 if(ret == -1) return ERROR_REFIDX_ORDER_T;
1925 }
1926 else
1927 ps_dec->ps_ref_pic_buf_lx[0] = ps_dec->ps_dpb_mgr->ps_init_dpb[0];
1928
1929 u1_ref_idx_re_flag_lx = ih264d_get_bit_h264(ps_bitstrm);
1930 COPYTHECONTEXT("SH: ref_pic_list_reordering_flag_l1", u1_ref_idx_re_flag_lx);
1931
1932 /* Modified temporarily */
1933 if(u1_ref_idx_re_flag_lx)
1934 {
1935 WORD8 ret;
1936 ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_mod_dpb[1];
1937 ret = ih264d_ref_idx_reordering(ps_dec, 1);
1938 if(ret == -1) return ERROR_REFIDX_ORDER_T;
1939 }
1940 else
1941 ps_dec->ps_ref_pic_buf_lx[1] = ps_dec->ps_dpb_mgr->ps_init_dpb[1];
1942
1943 /* Create refIdx to POC mapping */
1944 {
1945 void **ppv_map_ref_idx_to_poc_lx;
1946 WORD8 idx;
1947 struct pic_buffer_t *ps_pic;
1948
1949 ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L0;
1950 ppv_map_ref_idx_to_poc_lx[0] = 0;
1951 ppv_map_ref_idx_to_poc_lx++;
1952 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
1953 {
1954 ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
1955 ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1);
1956 }
1957
1958 ppv_map_ref_idx_to_poc_lx = ps_dec->ppv_map_ref_idx_to_poc + FRM_LIST_L1;
1959
1960 ppv_map_ref_idx_to_poc_lx[0] = 0;
1961 ppv_map_ref_idx_to_poc_lx++;
1962 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; idx++)
1963 {
1964 ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx];
1965 ppv_map_ref_idx_to_poc_lx[idx] = (ps_pic->pu1_buf1);
1966 }
1967
1968 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1969 {
1970 void **ppv_map_ref_idx_to_poc_lx_t, **ppv_map_ref_idx_to_poc_lx_b;
1971
1972 ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L0;
1973 ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L0;
1974
1975 ppv_map_ref_idx_to_poc_lx_t[0] = 0;
1976 ppv_map_ref_idx_to_poc_lx_t++;
1977 ppv_map_ref_idx_to_poc_lx_b[0] = 0;
1978 ppv_map_ref_idx_to_poc_lx_b++;
1979 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]; idx++)
1980 {
1981 ps_pic = ps_dec->ps_ref_pic_buf_lx[0][idx];
1982 ppv_map_ref_idx_to_poc_lx_t[0] = (ps_pic->pu1_buf1);
1983 ppv_map_ref_idx_to_poc_lx_b[1] = (ps_pic->pu1_buf1);
1984
1985 ppv_map_ref_idx_to_poc_lx_b[0] = (ps_pic->pu1_buf1) + 1;
1986 ppv_map_ref_idx_to_poc_lx_t[1] = (ps_pic->pu1_buf1) + 1;
1987
1988 ppv_map_ref_idx_to_poc_lx_t += 2;
1989 ppv_map_ref_idx_to_poc_lx_b += 2;
1990 }
1991
1992 ppv_map_ref_idx_to_poc_lx_t = ps_dec->ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1;
1993 ppv_map_ref_idx_to_poc_lx_b = ps_dec->ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1;
1994
1995 ppv_map_ref_idx_to_poc_lx_t[0] = 0;
1996 ppv_map_ref_idx_to_poc_lx_t++;
1997 ppv_map_ref_idx_to_poc_lx_b[0] = 0;
1998 ppv_map_ref_idx_to_poc_lx_b++;
1999 for(idx = 0; idx < ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]; idx++)
2000 {
2001 UWORD8 u1_tmp_idx = idx << 1;
2002 ps_pic = ps_dec->ps_ref_pic_buf_lx[1][idx];
2003 ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx] = (ps_pic->pu1_buf1);
2004 ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx + 1] = (ps_pic->pu1_buf1);
2005
2006 ppv_map_ref_idx_to_poc_lx_b[u1_tmp_idx] = (ps_pic->pu1_buf1) + 1;
2007 ppv_map_ref_idx_to_poc_lx_t[u1_tmp_idx + 1] = (ps_pic->pu1_buf1) + 1;
2008 }
2009 }
2010 }
2011
2012 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag && (ps_dec->ps_cur_slice->u1_field_pic_flag == 0))
2013 {
2014 ih264d_convert_frm_mbaff_list(ps_dec);
2015 }
2016
2017 if(ps_pps->u1_wted_bipred_idc == 1)
2018 {
2019 ret = ih264d_parse_pred_weight_table(ps_slice, ps_bitstrm);
2020 if(ret != OK) return ret;
2021 ih264d_form_pred_weight_matrix(ps_dec);
2022 ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
2023 }
2024 else if(ps_pps->u1_wted_bipred_idc == 2)
2025 {
2026 /* Implicit Weighted prediction */
2027 ps_slice->u2_log2Y_crwd = 0x0505;
2028 ps_dec->pu4_wt_ofsts = ps_dec->pu4_wts_ofsts_mat;
2029 ih264d_get_implicit_weights(ps_dec);
2030 }
2031 else
2032 ps_dec->ps_cur_slice->u2_log2Y_crwd = 0;
2033
2034 ps_dec->ps_parse_cur_slice->u2_log2Y_crwd = ps_dec->ps_cur_slice->u2_log2Y_crwd;
2035
2036 /* G050 */
2037 if(ps_slice->u1_nal_ref_idc != 0)
2038 {
2039 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
2040 {
2041 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
2042 dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
2043 UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
2044
2045 ps_pps->ps_sps = ps_dec->ps_cur_sps;
2046 if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
2047 ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
2048
2049 i_temp = ih264d_read_mmco_commands(ps_dec);
2050
2051 ps_pps->ps_sps = ps_sps_tmp;
2052 ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
2053
2054 if(i_temp < 0)
2055 {
2056 return ERROR_DBP_MANAGER_T;
2057 }
2058 ps_dec->u4_bitoffset = i_temp;
2059 }
2060 else
2061 ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
2062 }
2063 /* G050 */
2064
2065 if(ps_pps->u1_entropy_coding_mode == CABAC)
2066 {
2067 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2068 if(u4_temp > MAX_CABAC_INIT_IDC)
2069 {
2070 return ERROR_INV_SLICE_HDR_T;
2071 }
2072 ps_slice->u1_cabac_init_idc = u4_temp;
2073 COPYTHECONTEXT("SH: cabac_init_idc", ps_slice->u1_cabac_init_idc);
2074 }
2075 {
2076 /* Read slice_qp_delta */
2077 WORD64 i8_temp =
2078 (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2079 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP))
2080 {
2081 return ERROR_INV_RANGE_QP_T;
2082 }
2083 ps_slice->u1_slice_qp = (UWORD8) i8_temp;
2084 COPYTHECONTEXT("SH: slice_qp_delta",
2085 (WORD8) (ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp));
2086 }
2087 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
2088 {
2089 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2090 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
2091 {
2092 return ERROR_INV_SLICE_HDR_T;
2093 }
2094 COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp);
2095 ps_slice->u1_disable_dblk_filter_idc = u4_temp;
2096 if(u4_temp != 1)
2097 {
2098 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
2099 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
2100 {
2101 return ERROR_INV_SLICE_HDR_T;
2102 }
2103 ps_slice->i1_slice_alpha_c0_offset = i_temp;
2104 COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
2105 ps_slice->i1_slice_alpha_c0_offset >> 1);
2106
2107 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
2108 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
2109 {
2110 return ERROR_INV_SLICE_HDR_T;
2111 }
2112 ps_slice->i1_slice_beta_offset = i_temp;
2113 COPYTHECONTEXT("SH: slice_beta_offset_div2", ps_slice->i1_slice_beta_offset >> 1);
2114 }
2115 else
2116 {
2117 ps_slice->i1_slice_alpha_c0_offset = 0;
2118 ps_slice->i1_slice_beta_offset = 0;
2119 }
2120 }
2121 else
2122 {
2123 ps_slice->u1_disable_dblk_filter_idc = 0;
2124 ps_slice->i1_slice_alpha_c0_offset = 0;
2125 ps_slice->i1_slice_beta_offset = 0;
2126 }
2127
2128 ps_dec->u1_slice_header_done = 2;
2129
2130 if(ps_pps->u1_entropy_coding_mode)
2131 {
2132 SWITCHOFFTRACE;
2133 SWITCHONTRACECABAC;
2134 ps_svc_lyr_dec->pf_parse_svc_inter_slice = isvcd_parse_inter_slice_data_cabac;
2135 ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cabac;
2136 ih264d_init_cabac_contexts(B_SLICE, ps_dec);
2137
2138 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
2139 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
2140 else
2141 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
2142 }
2143 else
2144 {
2145 SWITCHONTRACE;
2146 SWITCHOFFTRACECABAC;
2147 ps_svc_lyr_dec->pf_parse_svc_inter_slice = isvcd_parse_inter_slice_data_cavlc;
2148 ps_dec->pf_parse_inter_mb = ih264d_parse_bmb_cavlc;
2149 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
2150 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
2151 else
2152 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
2153 }
2154
2155 ret = ih264d_cal_col_pic(ps_dec);
2156 if(ret != OK) return ret;
2157 ps_dec->u1_B = 1;
2158 ps_dec->pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_bmb;
2159 ret = ps_svc_lyr_dec->pf_parse_svc_inter_slice(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
2160 if(ret != OK) return ret;
2161
2162 return OK;
2163 }
2164