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_process_pslice.c
23 *
24 * \brief
25 *    Contains routines that decode a I slice type
26 *
27 * Detailed_description
28 *
29 * \date
30 *    21/12/2002
31 *
32 * \author  NS
33 **************************************************************************
34 */
35#include "ih264_typedefs.h"
36#include "ih264_macros.h"
37#include "ih264_platform_macros.h"
38
39#include <string.h>
40#include "ih264d_bitstrm.h"
41#include "ih264d_defs.h"
42#include "ih264d_debug.h"
43#include "ih264d_structs.h"
44#include "ih264d_defs.h"
45#include "ih264d_parse_cavlc.h"
46#include "ih264d_mb_utils.h"
47#include "ih264d_deblocking.h"
48#include "ih264d_dpb_manager.h"
49#include "ih264d_mvpred.h"
50#include "ih264d_inter_pred.h"
51#include "ih264d_process_pslice.h"
52#include "ih264d_error_handler.h"
53#include "ih264d_cabac.h"
54#include "ih264d_debug.h"
55#include "ih264d_tables.h"
56#include "ih264d_parse_slice.h"
57#include "ih264d_utils.h"
58#include "ih264d_parse_islice.h"
59#include "ih264d_process_bslice.h"
60#include "ih264d_process_intra_mb.h"
61
62void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec);
63
64void ih264d_insert_pic_in_ref_pic_listx(struct pic_buffer_t *ps_ref_pic_buf_lx,
65                                        struct pic_buffer_t *ps_pic)
66{
67    *ps_ref_pic_buf_lx = *ps_pic;
68}
69
70WORD32 ih264d_mv_pred_ref_tfr_nby2_pmb(dec_struct_t * ps_dec,
71                                     UWORD8 u1_mb_idx,
72                                     UWORD8 u1_num_mbs)
73{
74    parse_pmbarams_t * ps_mb_part_info;
75    parse_part_params_t * ps_part;
76    mv_pred_t *ps_mv_nmb, *ps_mv_nmb_start, *ps_mv_ntop, *ps_mv_ntop_start;
77    UWORD32 i, j;
78    const UWORD32 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
79    dec_mb_info_t * ps_cur_mb_info;
80    WORD32 i2_mv_x, i2_mv_y;
81    WORD32 ret;
82
83    ps_dec->i4_submb_ofst -= (u1_num_mbs - u1_mb_idx) << 4;
84    ps_mb_part_info = ps_dec->ps_parse_mb_data; // + u1_mb_idx;
85    ps_part = ps_dec->ps_parse_part_params; // + u1_mb_idx;
86
87    /* N/2 Mb MvPred and Transfer Setup Loop */
88    for(i = u1_mb_idx; i < u1_num_mbs; i++, ps_mb_part_info++)
89    {
90        UWORD32 u1_colz;
91        UWORD32 u1_field;
92        mv_pred_t s_mvPred;
93        mv_pred_t *ps_mv_pred = &s_mvPred;
94
95
96
97        *ps_mv_pred = ps_dec->s_default_mv_pred;
98
99        ps_dec->i4_submb_ofst += SUB_BLK_SIZE;
100
101        /* Restore the slice scratch MbX and MbY context */
102        ps_cur_mb_info = ps_dec->ps_nmb_info + i;
103        u1_field = ps_cur_mb_info->u1_mb_field_decodingflag;
104
105
106
107        ps_mv_nmb_start = ps_dec->ps_mv_cur + (i << 4);
108        ps_dec->u2_mbx = ps_cur_mb_info->u2_mbx;
109        ps_dec->u2_mby = ps_cur_mb_info->u2_mby;
110        ps_dec->u2_mv_2mb[i & 0x1] = 0;
111
112        /* Look for MV Prediction and Reference Transfer in Non-I Mbs */
113        if(!ps_mb_part_info->u1_isI_mb)
114        {
115            UWORD32 u1_blk_no;
116            WORD32 i1_ref_idx, i1_ref_idx1;
117            UWORD32 u1_sub_mb_x, u1_sub_mb_y, u1_sub_mb_num;
118            UWORD32 u1_num_part, u1_num_ref, u1_wd, u1_ht;
119            UWORD32 *pu4_wt_offst, **ppu4_wt_ofst;
120            UWORD32 u1_scale_ref, u4_bot_mb;
121            WORD8 *pi1_ref_idx = ps_mb_part_info->i1_ref_idx[0];
122            pic_buffer_t *ps_ref_frame, **pps_ref_frame;
123            deblk_mb_t * ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + i;
124
125            /* MB Level initialisations */
126            ps_dec->u4_num_pmbair = i >> u1_mbaff;
127            ps_dec->u1_mb_idx_mv = i;
128            ppu4_wt_ofst = ps_mb_part_info->pu4_wt_offst;
129            pps_ref_frame = ps_dec->ps_ref_pic_buf_lx[0];
130            /* CHANGED CODE */
131            ps_mv_ntop_start = ps_mv_nmb_start
132                            - (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12;
133
134            u1_num_part = ps_mb_part_info->u1_num_part;
135            ps_cur_deblk_mb->u1_mb_type |= (u1_num_part > 1) << 1;
136            ps_cur_mb_info->u4_pred_info_pkd_idx = ps_dec->u4_pred_info_pkd_idx;
137            ps_cur_mb_info->u1_num_pred_parts = 0;
138
139
140            /****************************************************/
141            /* weighted u4_ofst pointer calculations, this loop  */
142            /* runs maximum 4 times, even in direct cases       */
143            /****************************************************/
144            u1_scale_ref = u1_mbaff & u1_field;
145
146            u4_bot_mb = 1 - ps_cur_mb_info->u1_topmb;
147            if(ps_dec->ps_cur_pps->u1_wted_pred_flag)
148            {
149                u1_num_ref = MIN(u1_num_part, 4);
150                for(u1_blk_no = 0; u1_blk_no < u1_num_ref; u1_blk_no++)
151                {
152                    i1_ref_idx = pi1_ref_idx[u1_blk_no];
153                    if(u1_scale_ref)
154                        i1_ref_idx >>= 1;
155                    pu4_wt_offst = (UWORD32*)&ps_dec->pu4_wt_ofsts[2
156                                    * X3(i1_ref_idx)];
157                    ppu4_wt_ofst[u1_blk_no] = pu4_wt_offst;
158                }
159            }
160            else
161            {
162                ppu4_wt_ofst[0] = NULL;
163                ppu4_wt_ofst[1] = NULL;
164                ppu4_wt_ofst[2] = NULL;
165                ppu4_wt_ofst[3] = NULL;
166            }
167
168            /**************************************************/
169            /* Loop on Partitions                             */
170            /**************************************************/
171            for(j = 0; j < u1_num_part; j++, ps_part++)
172            {
173
174                u1_sub_mb_num = ps_part->u1_sub_mb_num;
175                ps_dec->u1_sub_mb_num = u1_sub_mb_num;
176
177                if(PART_NOT_DIRECT != ps_part->u1_is_direct)
178                {
179                    /* Mb Skip Mode */
180                    /* Setting the default and other members of MvPred Structure */
181                    s_mvPred.i2_mv[2] = -1;
182                    s_mvPred.i2_mv[3] = -1;
183                    s_mvPred.i1_ref_frame[0] = 0;
184                    i1_ref_idx = (u1_scale_ref && u4_bot_mb) ? MAX_REF_BUFS : 0;
185                    ps_ref_frame = pps_ref_frame[i1_ref_idx];
186                    s_mvPred.u1_col_ref_pic_idx = ps_ref_frame->u1_mv_buf_id;
187                    s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type;
188                    pu4_wt_offst = (UWORD32*)&ps_dec->pu4_wt_ofsts[0];
189
190                    ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb_start,
191                                      ps_mv_ntop_start, &s_mvPred, 0, 4, 0, 1,
192                                      MB_SKIP);
193
194
195
196
197
198
199                    {
200                        pred_info_pkd_t *ps_pred_pkd;
201                        ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
202                    ih264d_fill_pred_info (s_mvPred.i2_mv,4,4,0,PRED_L0,ps_pred_pkd,ps_ref_frame->u1_pic_buf_id,
203                                           (i1_ref_idx >> u1_scale_ref),pu4_wt_offst,
204                                           ps_ref_frame->u1_pic_type);
205
206
207                    ps_dec->u4_pred_info_pkd_idx++;
208                    ps_cur_mb_info->u1_num_pred_parts++;
209                    }
210
211
212
213                    /* Storing colocated zero information */
214                    u1_colz = ((ABS(s_mvPred.i2_mv[0]) <= 1)
215                                    && (ABS(s_mvPred.i2_mv[1]) <= 1))
216                                    + (u1_field << 1);
217
218                    ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
219                                       u1_colz, 4, 4);
220                }
221                else
222                {
223                    u1_sub_mb_x = u1_sub_mb_num & 0x03;
224                    u1_sub_mb_y = u1_sub_mb_num >> 2;
225                    u1_blk_no =
226                                    (u1_num_part < 4) ?
227                                                    j :
228                                                    (((u1_sub_mb_y >> 1) << 1)
229                                                                    + (u1_sub_mb_x
230                                                                                    >> 1));
231
232                    ps_mv_ntop = ps_mv_ntop_start + u1_sub_mb_x;
233                    ps_mv_nmb = ps_mv_nmb_start + u1_sub_mb_num;
234
235                    u1_wd = ps_part->u1_partwidth;
236                    u1_ht = ps_part->u1_partheight;
237
238                    /* Populate the colpic info and reference frames */
239                    i1_ref_idx = pi1_ref_idx[u1_blk_no];
240                    s_mvPred.i1_ref_frame[0] = i1_ref_idx;
241
242                    /********************************************************/
243                    /* Predict Mv                                           */
244                    /* Add Mv Residuals and store back                      */
245                    /********************************************************/
246                    ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb, ps_mv_ntop,
247                                      &s_mvPred, u1_sub_mb_num, u1_wd, 0, 1,
248                                      ps_cur_mb_info->u1_mb_mc_mode);
249                    i2_mv_x = ps_mv_nmb->i2_mv[0];
250                    i2_mv_y = ps_mv_nmb->i2_mv[1];
251                    i2_mv_x += s_mvPred.i2_mv[0];
252                    i2_mv_y += s_mvPred.i2_mv[1];
253                    s_mvPred.i2_mv[0] = i2_mv_x;
254                    s_mvPred.i2_mv[1] = i2_mv_y;
255
256                    /********************************************************/
257                    /* Transfer setup call                                  */
258                    /* convert RefIdx if it is MbAff                        */
259                    /* Pass Weight Offset and refFrame                      */
260                    /********************************************************/
261                    i1_ref_idx1 = i1_ref_idx >> u1_scale_ref;
262                    if(u1_scale_ref && ((i1_ref_idx & 0x01) != u4_bot_mb))
263                        i1_ref_idx1 += MAX_REF_BUFS;
264                    ps_ref_frame = pps_ref_frame[i1_ref_idx1];
265                    pu4_wt_offst = ppu4_wt_ofst[u1_blk_no];
266
267
268
269
270
271
272                    {
273                    pred_info_pkd_t *ps_pred_pkd;
274                    ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
275                    ih264d_fill_pred_info (s_mvPred.i2_mv,u1_wd,u1_ht,u1_sub_mb_num,PRED_L0,ps_pred_pkd,
276                                           ps_ref_frame->u1_pic_buf_id,(i1_ref_idx >> u1_scale_ref),pu4_wt_offst,
277                                           ps_ref_frame->u1_pic_type);
278
279                    ps_dec->u4_pred_info_pkd_idx++;
280                    ps_cur_mb_info->u1_num_pred_parts++;
281                    }
282
283
284
285                    /* Fill colocated info in MvPred structure */
286                    s_mvPred.u1_col_ref_pic_idx = ps_ref_frame->u1_mv_buf_id;
287                    s_mvPred.u1_pic_type = ps_ref_frame->u1_pic_type;
288
289                    /* Calculating colocated zero information */
290                    u1_colz =
291                                    (u1_field << 1)
292                                                    | ((i1_ref_idx == 0)
293                                                                    && (ABS(i2_mv_x)
294                                                                                    <= 1)
295                                                                    && (ABS(i2_mv_y)
296                                                                                    <= 1));
297                    u1_colz |= ps_mb_part_info->u1_col_info[u1_blk_no];
298
299                    /* Replicate the motion vectors and colzero u4_flag  */
300                    /* for all sub-partitions                         */
301
302                    ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb,
303                                       u1_sub_mb_num, u1_colz, u1_ht,
304                                       u1_wd);
305                }
306            }
307
308        }
309        else
310        {
311            /* Storing colocated zero information */
312            ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
313                               (UWORD8)(u1_field << 1), 4, 4);
314
315        }
316        /*if num _cores is set to 3,compute bs will be done in another thread*/
317        if(ps_dec->u4_num_cores < 3)
318        {
319
320            if(ps_dec->u4_app_disable_deblk_frm == 0)
321                ps_dec->pf_compute_bs(ps_dec, ps_cur_mb_info,
322                                     (UWORD16)(i >> u1_mbaff));
323        }
324    }
325
326
327
328    return OK;
329}
330
331
332WORD32 ih264d_decode_recon_tfr_nmb(dec_struct_t * ps_dec,
333                                   UWORD8 u1_mb_idx,
334                                   UWORD8 u1_num_mbs,
335                                   UWORD8 u1_num_mbs_next,
336                                   UWORD8 u1_tfr_n_mb,
337                                   UWORD8 u1_end_of_row)
338{
339    WORD32 i,j;
340    UWORD32 u1_end_of_row_next;
341    dec_mb_info_t * ps_cur_mb_info;
342    UWORD32 u4_update_mbaff = 0;
343    WORD32 ret;
344    const UWORD32 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
345    const UWORD32 u1_slice_type = ps_dec->ps_cur_slice->u1_slice_type;
346    const WORD32 u1_skip_th = (
347                    (u1_slice_type != I_SLICE) ?
348                                    (ps_dec->u1_B ? B_8x8 : PRED_8x8R0) : -1);
349    const UWORD32 u1_ipcm_th = (
350                    (u1_slice_type != I_SLICE) ? (ps_dec->u1_B ? 23 : 5) : 0);
351
352
353
354
355
356    /* N Mb MC Loop */
357    for(i = u1_mb_idx; i < u1_num_mbs; i++)
358    {
359        ps_cur_mb_info = ps_dec->ps_nmb_info + i;
360        ps_dec->u4_dma_buf_idx = 0;
361        ps_dec->u4_pred_info_idx = 0;
362
363        if(ps_cur_mb_info->u1_mb_type <= u1_skip_th)
364        {
365            {
366                WORD32 pred_cnt = 0;
367                pred_info_pkd_t *ps_pred_pkd;
368                UWORD32 u4_pred_info_pkd_idx;
369                WORD8 i1_pred;
370
371                u4_pred_info_pkd_idx = ps_cur_mb_info->u4_pred_info_pkd_idx;
372
373                while(pred_cnt < ps_cur_mb_info->u1_num_pred_parts)
374                {
375
376                    ps_pred_pkd = ps_dec->ps_pred_pkd + u4_pred_info_pkd_idx;
377
378                     ps_dec->p_form_mb_part_info(ps_pred_pkd,ps_dec,
379                                               ps_cur_mb_info->u2_mbx,ps_cur_mb_info->u2_mby,(i >> u1_mbaff),
380                                         ps_cur_mb_info);
381                    u4_pred_info_pkd_idx++;
382                    pred_cnt++;
383                }
384            }
385
386            ps_dec->p_motion_compensate(ps_dec, ps_cur_mb_info);
387
388        }
389        else if(ps_cur_mb_info->u1_mb_type == MB_SKIP)
390        {
391            {
392                WORD32 pred_cnt = 0;
393                pred_info_pkd_t *ps_pred_pkd;
394                UWORD32 u4_pred_info_pkd_idx;
395                WORD8 i1_pred;
396
397                u4_pred_info_pkd_idx = ps_cur_mb_info->u4_pred_info_pkd_idx;
398
399                while(pred_cnt < ps_cur_mb_info->u1_num_pred_parts)
400                {
401
402                    ps_pred_pkd = ps_dec->ps_pred_pkd + u4_pred_info_pkd_idx;
403
404                    ps_dec->p_form_mb_part_info(ps_pred_pkd,ps_dec,
405                                               ps_cur_mb_info->u2_mbx,ps_cur_mb_info->u2_mby,(i >> u1_mbaff),
406                                         ps_cur_mb_info);
407
408                    u4_pred_info_pkd_idx++;
409                    pred_cnt++;
410                }
411            }
412            /* Decode MB skip */
413            ps_dec->p_motion_compensate(ps_dec, ps_cur_mb_info);
414
415        }
416
417     }
418
419
420    /* N Mb IQ IT RECON  Loop */
421    for(j = u1_mb_idx; j < i; j++)
422    {
423        ps_cur_mb_info = ps_dec->ps_nmb_info + j;
424
425        if(ps_cur_mb_info->u1_mb_type <= u1_skip_th)
426        {
427            ih264d_process_inter_mb(ps_dec, ps_cur_mb_info, j);
428
429        }
430        else if(ps_cur_mb_info->u1_mb_type != MB_SKIP)
431        {
432            if((u1_ipcm_th + 25) != ps_cur_mb_info->u1_mb_type)
433            {
434                ps_cur_mb_info->u1_mb_type -= (u1_skip_th + 1);
435                ih264d_process_intra_mb(ps_dec, ps_cur_mb_info, j);
436            }
437        }
438
439
440        if(ps_dec->u4_use_intrapred_line_copy)
441        {
442            ih264d_copy_intra_pred_line(ps_dec, ps_cur_mb_info, j);
443        }
444
445    }
446
447    /*N MB deblocking*/
448    if(ps_dec->u4_nmb_deblk == 1)
449    {
450
451        UWORD32 u4_cur_mb, u4_right_mb;
452        UWORD32 u4_mb_x, u4_mb_y;
453        UWORD32 u4_wd_y, u4_wd_uv;
454        tfr_ctxt_t *ps_tfr_cxt = &(ps_dec->s_tran_addrecon);
455        UWORD8 u1_field_pic_flag = ps_dec->ps_cur_slice->u1_field_pic_flag;
456        const WORD32 i4_cb_qp_idx_ofst =
457                       ps_dec->ps_cur_pps->i1_chroma_qp_index_offset;
458        const WORD32 i4_cr_qp_idx_ofst =
459                       ps_dec->ps_cur_pps->i1_second_chroma_qp_index_offset;
460
461        u4_wd_y = ps_dec->u2_frm_wd_y << u1_field_pic_flag;
462        u4_wd_uv = ps_dec->u2_frm_wd_uv << u1_field_pic_flag;
463
464
465        ps_cur_mb_info = ps_dec->ps_nmb_info + u1_mb_idx;
466
467        ps_dec->u4_deblk_mb_x = ps_cur_mb_info->u2_mbx;
468        ps_dec->u4_deblk_mb_y = ps_cur_mb_info->u2_mby;
469
470        for(j = u1_mb_idx; j < i; j++)
471        {
472
473            ih264d_deblock_mb_nonmbaff(ps_dec, ps_tfr_cxt,
474                                       i4_cb_qp_idx_ofst, i4_cr_qp_idx_ofst,
475                                        u4_wd_y, u4_wd_uv);
476
477
478        }
479
480
481
482    }
483
484
485
486    if(u1_tfr_n_mb)
487    {
488        /****************************************************************/
489        /* Check for End Of Row in Next iteration                       */
490        /****************************************************************/
491        u1_end_of_row_next =
492                        u1_num_mbs_next
493                                        && (u1_num_mbs_next
494                                                        <= (ps_dec->u1_recon_mb_grp
495                                                                        >> u1_mbaff));
496
497        /****************************************************************/
498        /* Transfer the Following things                                */
499        /* N-Mb DeblkParams Data    ( To Ext DeblkParams Buffer )       */
500        /* N-Mb Recon Data          ( To Ext Frame Buffer )             */
501        /* N-Mb Intrapredline Data  ( Updated Internally)               */
502        /* N-Mb MV Data             ( To Ext MV Buffer )                */
503        /* N-Mb MVTop/TopRight Data ( To Int MV Top Scratch Buffers)    */
504        /****************************************************************/
505        ih264d_transfer_mb_group_data(ps_dec, u1_num_mbs, u1_end_of_row,
506                                      u1_end_of_row_next);
507        ps_dec->u4_num_mbs_prev_nmb = u1_num_mbs;
508
509        ps_dec->u4_pred_info_idx = 0;
510        ps_dec->u4_dma_buf_idx = 0;
511
512
513    }
514    return OK;
515}
516
517/*!
518 **************************************************************************
519 * \if Function name : ih264d_process_inter_mb \endif
520 *
521 * \brief
522 *    This function decodes an Inter MB.
523 *
524 *
525 * \return
526 *    0 on Success and Error code otherwise
527 **************************************************************************
528 */
529WORD32 ih264d_process_inter_mb(dec_struct_t * ps_dec,
530                               dec_mb_info_t * ps_cur_mb_info,
531                               UWORD8 u1_mb_num)
532{
533    /* CHANGED CODE */
534    UWORD8 *pu1_rec_y, *pu1_rec_u, *pu1_rec_v;
535
536    /*CHANGED CODE */
537    UWORD32 ui_rec_width, u4_recwidth_cr;
538    WORD16 *pi2_y_coeff;
539    UWORD32 u1_mb_field_decoding_flag;
540    const UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
541    UWORD32 uc_botMb;
542    UWORD32 u4_num_pmbair;
543    /* CHANGED CODE */
544    tfr_ctxt_t *ps_frame_buf = ps_dec->ps_frame_buf_ip_recon;
545    UWORD32 u4_luma_dc_only_csbp = 0;
546    UWORD32 u4_luma_dc_only_cbp = 0;
547    /* CHANGED CODE */
548
549    uc_botMb = 1 - ps_cur_mb_info->u1_topmb;
550    u4_num_pmbair = (u1_mb_num >> u1_mbaff);
551    u1_mb_field_decoding_flag = ps_cur_mb_info->u1_mb_field_decodingflag;
552
553
554    /* CHANGED CODE */
555    pu1_rec_y = ps_frame_buf->pu1_dest_y + (u4_num_pmbair << 4);
556    pu1_rec_u =
557                    ps_frame_buf->pu1_dest_u
558                                    + (u4_num_pmbair << 3) * YUV420SP_FACTOR;
559    pu1_rec_v = ps_frame_buf->pu1_dest_v + (u4_num_pmbair << 3);
560    ui_rec_width = ps_dec->u2_frm_wd_y << u1_mb_field_decoding_flag;
561    u4_recwidth_cr = ps_dec->u2_frm_wd_uv << u1_mb_field_decoding_flag;
562
563    /* CHANGED CODE */
564
565    if(u1_mbaff)
566    {
567        if(uc_botMb)
568        {
569            pu1_rec_y += (u1_mb_field_decoding_flag ?
570                            (ui_rec_width >> 1) : (ui_rec_width << 4));
571            pu1_rec_u += (u1_mb_field_decoding_flag ?
572                            (u4_recwidth_cr >> 1) : (u4_recwidth_cr << 3));
573            pu1_rec_v += (u1_mb_field_decoding_flag ?
574                            (u4_recwidth_cr >> 1) : (u4_recwidth_cr << 3));
575        }
576    }
577
578    if(!ps_cur_mb_info->u1_tran_form8x8)
579    {
580        u4_luma_dc_only_csbp = ih264d_unpack_luma_coeff4x4_mb(ps_dec,
581                                       ps_cur_mb_info,
582                                       0);
583    }
584    else
585    {
586        if(!ps_dec->ps_cur_pps->u1_entropy_coding_mode)
587        {
588            u4_luma_dc_only_cbp = ih264d_unpack_luma_coeff4x4_mb(ps_dec,
589                                           ps_cur_mb_info,
590                                           0);
591        }
592        else
593        {
594            u4_luma_dc_only_cbp = ih264d_unpack_luma_coeff8x8_mb(ps_dec,
595                                           ps_cur_mb_info);
596        }
597    }
598
599    pi2_y_coeff = ps_dec->pi2_coeff_data;
600    /* Inverse Transform and Reconstruction */
601    if(ps_cur_mb_info->u1_cbp & 0x0f)
602    {
603        /* CHANGED CODE */
604        if(!ps_cur_mb_info->u1_tran_form8x8)
605        {
606            UWORD32 i;
607            WORD16 ai2_tmp[16];
608            for(i = 0; i < 16; i++)
609            {
610                if(CHECKBIT(ps_cur_mb_info->u2_luma_csbp, i))
611                {
612                    WORD16 *pi2_level = pi2_y_coeff + (i << 4);
613                    UWORD8 *pu1_pred_sblk = pu1_rec_y + ((i & 0x3) * BLK_SIZE)
614                                    + (i >> 2) * (ui_rec_width << 2);
615                    PROFILE_DISABLE_IQ_IT_RECON()
616                    {
617                        if(CHECKBIT(u4_luma_dc_only_csbp, i))
618                        {
619                            ps_dec->pf_iquant_itrans_recon_luma_4x4_dc(
620                                            pi2_level,
621                                            pu1_pred_sblk,
622                                            pu1_pred_sblk,
623                                            ui_rec_width,
624                                            ui_rec_width,
625                                            gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qp_rem6],
626                                            (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[3],
627                                            ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0,
628                                            NULL);
629                        }
630                        else
631                        {
632                            ps_dec->pf_iquant_itrans_recon_luma_4x4(
633                                            pi2_level,
634                                            pu1_pred_sblk,
635                                            pu1_pred_sblk,
636                                            ui_rec_width,
637                                            ui_rec_width,
638                                            gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qp_rem6],
639                                            (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[3],
640                                            ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0,
641                                            NULL);
642                        }
643                    }
644                }
645            }
646        }
647        else
648        {
649            WORD16 *pi2_scale_matrix_ptr;
650            WORD32 i;
651
652            pi2_scale_matrix_ptr =
653                            ps_dec->s_high_profile.i2_scalinglist8x8[1];
654
655            for(i = 0; i < 4; i++)
656            {
657                WORD16 ai2_tmp[64];
658                WORD16 *pi16_levelBlock = pi2_y_coeff + (i << 6); /* move to the next 8x8 adding 64 */
659
660                UWORD8 *pu1_pred_sblk = pu1_rec_y + ((i & 0x1) * BLK8x8SIZE)
661                                + (i >> 1) * (ui_rec_width << 3);
662                if(CHECKBIT(ps_cur_mb_info->u1_cbp, i))
663                {
664                    PROFILE_DISABLE_IQ_IT_RECON()
665                    {
666                        if(CHECKBIT(u4_luma_dc_only_cbp, i))
667                        {
668                            ps_dec->pf_iquant_itrans_recon_luma_8x8_dc(
669                                            pi16_levelBlock,
670                                            pu1_pred_sblk,
671                                            pu1_pred_sblk,
672                                            ui_rec_width,
673                                            ui_rec_width,
674                                            gau1_ih264d_dequant8x8_cavlc[ps_cur_mb_info->u1_qp_rem6],
675                                            (UWORD16 *)pi2_scale_matrix_ptr,
676                                            ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0,
677                                            NULL);
678                        }
679                        else
680                        {
681                            ps_dec->pf_iquant_itrans_recon_luma_8x8(
682                                            pi16_levelBlock,
683                                            pu1_pred_sblk,
684                                            pu1_pred_sblk,
685                                            ui_rec_width,
686                                            ui_rec_width,
687                                            gau1_ih264d_dequant8x8_cavlc[ps_cur_mb_info->u1_qp_rem6],
688                                            (UWORD16 *)pi2_scale_matrix_ptr,
689                                            ps_cur_mb_info->u1_qp_div6, ai2_tmp, 0,
690                                            NULL);
691                        }
692                    }
693                }
694            }
695
696        }
697    }
698
699    /* Decode Chroma Block */
700    ih264d_unpack_chroma_coeff4x4_mb(ps_dec,
701                                     ps_cur_mb_info);
702    /*--------------------------------------------------------------------*/
703    /* Chroma Blocks decoding                                             */
704    /*--------------------------------------------------------------------*/
705    {
706        UWORD8 u1_chroma_cbp = (UWORD8)(ps_cur_mb_info->u1_cbp >> 4);
707
708        if(u1_chroma_cbp != CBPC_ALLZERO)
709        {
710            UWORD32 u4_scale_u = ps_cur_mb_info->u1_qpc_div6;
711            UWORD32 u4_scale_v = ps_cur_mb_info->u1_qpcr_div6;
712            UWORD16 u2_chroma_csbp = ps_cur_mb_info->u2_chroma_csbp;
713
714            pi2_y_coeff = ps_dec->pi2_coeff_data;
715
716            {
717                UWORD32 i;
718                WORD16 ai2_tmp[16];
719                for(i = 0; i < 4; i++)
720                {
721                    WORD16 *pi2_level = pi2_y_coeff + (i << 4);
722                    UWORD8 *pu1_pred_sblk = pu1_rec_u
723                                    + ((i & 0x1) * BLK_SIZE * YUV420SP_FACTOR)
724                                    + (i >> 1) * (u4_recwidth_cr << 2);
725                    PROFILE_DISABLE_IQ_IT_RECON()
726                    {
727                        if(CHECKBIT(u2_chroma_csbp, i))
728                        {
729                            ps_dec->pf_iquant_itrans_recon_chroma_4x4(
730                                            pi2_level,
731                                            pu1_pred_sblk,
732                                            pu1_pred_sblk,
733                                            u4_recwidth_cr,
734                                            u4_recwidth_cr,
735                                            gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpc_rem6],
736                                            (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[4],
737                                            u4_scale_u, ai2_tmp, pi2_level);
738                        }
739                        else if(pi2_level[0] != 0)
740                        {
741                            ps_dec->pf_iquant_itrans_recon_chroma_4x4_dc(
742                                            pi2_level,
743                                            pu1_pred_sblk,
744                                            pu1_pred_sblk,
745                                            u4_recwidth_cr,
746                                            u4_recwidth_cr,
747                                            gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpc_rem6],
748                                            (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[4],
749                                            u4_scale_u, ai2_tmp, pi2_level);
750                        }
751                    }
752                }
753            }
754
755            pi2_y_coeff += MB_CHROM_SIZE;
756            u2_chroma_csbp >>= 4;
757
758            {
759                UWORD32 i;
760                WORD16 ai2_tmp[16];
761                for(i = 0; i < 4; i++)
762                {
763                    WORD16 *pi2_level = pi2_y_coeff + (i << 4);
764                    UWORD8 *pu1_pred_sblk = pu1_rec_u + 1
765                                    + ((i & 0x1) * BLK_SIZE * YUV420SP_FACTOR)
766                                    + (i >> 1) * (u4_recwidth_cr << 2);
767                    PROFILE_DISABLE_IQ_IT_RECON()
768                    {
769                        if(CHECKBIT(u2_chroma_csbp, i))
770                        {
771                            ps_dec->pf_iquant_itrans_recon_chroma_4x4(
772                                            pi2_level,
773                                            pu1_pred_sblk,
774                                            pu1_pred_sblk,
775                                            u4_recwidth_cr,
776                                            u4_recwidth_cr,
777                                            gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpcr_rem6],
778                                            (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[5],
779                                            u4_scale_v, ai2_tmp, pi2_level);
780                        }
781                        else if(pi2_level[0] != 0)
782                        {
783                            ps_dec->pf_iquant_itrans_recon_chroma_4x4_dc(
784                                            pi2_level,
785                                            pu1_pred_sblk,
786                                            pu1_pred_sblk,
787                                            u4_recwidth_cr,
788                                            u4_recwidth_cr,
789                                            gau2_ih264_iquant_scale_4x4[ps_cur_mb_info->u1_qpcr_rem6],
790                                            (UWORD16 *)ps_dec->s_high_profile.i2_scalinglist4x4[5],
791                                            u4_scale_v, ai2_tmp, pi2_level);
792                        }
793                    }
794                }
795            }
796        }
797    }
798    return (0);
799}
800
801/*!
802 **************************************************************************
803 * \if Function name : ih264d_parse_pred_weight_table \endif
804 *
805 * \brief
806 *    Implements pred_weight_table() of 7.3.3.2.
807 *
808 * \return
809 *    None
810 *
811 **************************************************************************
812 */
813WORD32 ih264d_parse_pred_weight_table(dec_slice_params_t * ps_cur_slice,
814                                      dec_bit_stream_t * ps_bitstrm)
815{
816    UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
817    UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
818    WORD8 i, cont, lx;
819    UWORD8 uc_weight_flag;
820    UWORD32 *pui32_weight_offset_lx;
821    WORD16 c_weight, c_offset;
822    UWORD32 ui32_y_def_weight_ofst, ui32_cr_def_weight_ofst;
823    UWORD32 ui32_temp;
824    UWORD8 uc_luma_log2_weight_denom;
825    UWORD8 uc_chroma_log2_weight_denom;
826
827    /* Variables for error resilience checks */
828    UWORD32 u4_temp;
829    WORD32 i_temp;
830
831    u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
832    if(u4_temp & MASK_LOG2_WEIGHT_DENOM)
833    {
834        return ERROR_PRED_WEIGHT_TABLE_T;
835    }
836    uc_luma_log2_weight_denom = u4_temp;
837    COPYTHECONTEXT("SH: luma_log2_weight_denom",uc_luma_log2_weight_denom);
838    ui32_y_def_weight_ofst = (1 << uc_luma_log2_weight_denom);
839
840    u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
841    if(u4_temp & MASK_LOG2_WEIGHT_DENOM)
842    {
843        return ERROR_PRED_WEIGHT_TABLE_T;
844    }
845    uc_chroma_log2_weight_denom = u4_temp;
846    COPYTHECONTEXT("SH: chroma_log2_weight_denom",uc_chroma_log2_weight_denom);
847    ui32_cr_def_weight_ofst = (1 << uc_chroma_log2_weight_denom);
848
849    ps_cur_slice->u2_log2Y_crwd = uc_luma_log2_weight_denom
850                    | (uc_chroma_log2_weight_denom << 8);
851
852    cont = (ps_cur_slice->u1_slice_type == B_SLICE);
853    lx = 0;
854    do
855    {
856        for(i = 0; i < ps_cur_slice->u1_num_ref_idx_lx_active[lx]; i++)
857        {
858            pui32_weight_offset_lx = ps_cur_slice->u4_wt_ofst_lx[lx][i];
859
860            uc_weight_flag = ih264d_get_bit_h264(ps_bitstrm);
861            pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
862            COPYTHECONTEXT("SH: luma_weight_l0_flag",uc_weight_flag);
863            if(uc_weight_flag)
864            {
865                i_temp = ih264d_sev(pu4_bitstrm_ofst,
866                                    pu4_bitstrm_buf);
867                if((i_temp + 128) & MASK_PRED_WEIGHT_OFFSET)
868                    return ERROR_PRED_WEIGHT_TABLE_T;
869                c_weight = i_temp;
870                COPYTHECONTEXT("SH: luma_weight_l0",c_weight);
871
872                i_temp = ih264d_sev(pu4_bitstrm_ofst,
873                                    pu4_bitstrm_buf);
874                if((i_temp + 128) & MASK_PRED_WEIGHT_OFFSET)
875                    return ERROR_PRED_WEIGHT_TABLE_T;
876                c_offset = i_temp;
877                COPYTHECONTEXT("SH: luma_offset_l0",c_offset);
878
879                ui32_temp = (c_offset << 16) | (c_weight & 0xFFFF);
880                pui32_weight_offset_lx[0] = ui32_temp;
881            }
882            else
883            {
884
885                pui32_weight_offset_lx[0] = ui32_y_def_weight_ofst;
886            }
887
888            {
889                WORD8 c_weightCb, c_weightCr, c_offsetCb, c_offsetCr;
890                uc_weight_flag = ih264d_get_bit_h264(ps_bitstrm);
891                pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
892                COPYTHECONTEXT("SH: chroma_weight_l0_flag",uc_weight_flag);
893                if(uc_weight_flag)
894                {
895                    i_temp = ih264d_sev(pu4_bitstrm_ofst,
896                                        pu4_bitstrm_buf);
897                    if((i_temp + 128) & MASK_PRED_WEIGHT_OFFSET)
898                        return ERROR_PRED_WEIGHT_TABLE_T;
899                    c_weightCb = i_temp;
900                    COPYTHECONTEXT("SH: chroma_weight_l0",c_weightCb);
901
902                    i_temp = ih264d_sev(pu4_bitstrm_ofst,
903                                        pu4_bitstrm_buf);
904                    if((i_temp + 128) & MASK_PRED_WEIGHT_OFFSET)
905                        return ERROR_PRED_WEIGHT_TABLE_T;
906                    c_offsetCb = i_temp;
907                    COPYTHECONTEXT("SH: chroma_weight_l0",c_offsetCb);
908
909                    ui32_temp = (c_offsetCb << 16) | (c_weightCb & 0xFFFF);
910                    pui32_weight_offset_lx[1] = ui32_temp;
911
912                    i_temp = ih264d_sev(pu4_bitstrm_ofst,
913                                        pu4_bitstrm_buf);
914                    if((i_temp + 128) & MASK_PRED_WEIGHT_OFFSET)
915                        return ERROR_PRED_WEIGHT_TABLE_T;
916                    c_weightCr = i_temp;
917                    COPYTHECONTEXT("SH: chroma_weight_l0",c_weightCr);
918
919                    i_temp = ih264d_sev(pu4_bitstrm_ofst,
920                                        pu4_bitstrm_buf);
921                    if((i_temp + 128) & MASK_PRED_WEIGHT_OFFSET)
922                        return ERROR_PRED_WEIGHT_TABLE_T;
923                    c_offsetCr = i_temp;
924                    COPYTHECONTEXT("SH: chroma_weight_l0",c_offsetCr);
925
926                    ui32_temp = (c_offsetCr << 16) | (c_weightCr & 0xFFFF);
927                    pui32_weight_offset_lx[2] = ui32_temp;
928                }
929                else
930                {
931                    pui32_weight_offset_lx[1] = ui32_cr_def_weight_ofst;
932                    pui32_weight_offset_lx[2] = ui32_cr_def_weight_ofst;
933                }
934            }
935        }
936        lx++;
937    }
938    while(cont--);
939
940    return OK;
941}
942
943
944/*****************************************************************************/
945/*                                                                           */
946/*  Function Name : ih264d_init_ref_idx_lx_p                                        */
947/*                                                                           */
948/*  Description   : This function initializes the reference picture L0 list  */
949/*                  for P slices as per section 8.2.4.2.1 and 8.2.4.2.2.     */
950/*                                                                           */
951/*  Inputs        : pointer to ps_dec struture                               */
952/*  Globals       : NO                                                       */
953/*  Processing    : arranges all the short term pictures according to        */
954/*                  pic_num in descending order starting from curr pic_num.  */
955/*                  and inserts it in L0 list followed by all Long term      */
956/*                  pictures in ascending order.                             */
957/*                                                                           */
958/*  Returns       : void                                                     */
959/*                                                                           */
960/*  Issues        : <List any issues or problems with this function>         */
961/*                                                                           */
962/*  Revision History:                                                        */
963/*                                                                           */
964/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
965/*         13 07 2002   Jay             Draft                                */
966/*                                                                           */
967/*****************************************************************************/
968void ih264d_init_ref_idx_lx_p(dec_struct_t *ps_dec)
969{
970    struct pic_buffer_t *ps_ref_pic_buf_lx;
971    dpb_manager_t *ps_dpb_mgr;
972    struct dpb_info_t *ps_next_dpb;
973    WORD8 i;
974    UWORD8 u1_max_lt_index, u1_min_lt_index;
975    UWORD32 u4_lt_index;
976    UWORD8 u1_field_pic_flag;
977    dec_slice_params_t *ps_cur_slice;
978    UWORD8 u1_L0;
979    WORD32 i4_cur_pic_num, i4_min_st_pic_num;
980    WORD32 i4_temp_pic_num, i4_ref_pic_num;
981    UWORD8 u1_num_short_term_bufs;
982    UWORD8 u1_max_ref_idx_l0;
983
984    ps_cur_slice = ps_dec->ps_cur_slice;
985    u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;
986    u1_max_ref_idx_l0 = ps_cur_slice->u1_num_ref_idx_lx_active[0]
987                    << u1_field_pic_flag;
988
989    ps_dpb_mgr = ps_dec->ps_dpb_mgr;
990    /* Get the current frame number */
991    i4_cur_pic_num = ps_dec->ps_cur_pic->i4_pic_num;
992
993    /* Get Min pic_num,MinLt */
994    i4_min_st_pic_num = i4_cur_pic_num;
995    u1_max_lt_index = MAX_REF_BUFS + 1;
996    u1_min_lt_index = MAX_REF_BUFS + 1;
997
998    /* Start from ST head */
999    ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1000    for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1001    {
1002        i4_ref_pic_num = ps_next_dpb->ps_pic_buf->i4_pic_num;
1003        if(i4_ref_pic_num < i4_cur_pic_num)
1004        {
1005            /* RefPic Buf pic_num is before Current pic_num in decode order */
1006            i4_min_st_pic_num = MIN(i4_min_st_pic_num, i4_ref_pic_num);
1007        }
1008
1009        /* Chase the next link */
1010        ps_next_dpb = ps_next_dpb->ps_prev_short;
1011    }
1012
1013    /* Start from LT head */
1014    ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
1015    if(ps_next_dpb)
1016    {
1017        u1_max_lt_index = ps_next_dpb->u1_lt_idx;
1018        u1_min_lt_index = ps_next_dpb->u1_lt_idx;
1019
1020        for(i = 0; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
1021        {
1022            u4_lt_index = ps_next_dpb->u1_lt_idx;
1023            u1_max_lt_index = (UWORD8)(MAX(u1_max_lt_index, u4_lt_index));
1024            u1_min_lt_index = (UWORD8)(MIN(u1_min_lt_index, u4_lt_index));
1025
1026            /* Chase the next link */
1027            ps_next_dpb = ps_next_dpb->ps_prev_long;
1028        }
1029    }
1030    /* 1. Initialize refIdxL0 */
1031    u1_L0 = 0;
1032    if(u1_field_pic_flag)
1033    {
1034        ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[0][0];
1035        ps_ref_pic_buf_lx += MAX_REF_BUFS;
1036        i4_temp_pic_num = i4_cur_pic_num;
1037    }
1038    else
1039    {
1040        ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[0][0];
1041        i4_temp_pic_num = i4_cur_pic_num;
1042    }
1043
1044    /* Arrange all short term buffers in output order as given by pic_num */
1045    /* Arrange pic_num's less than Curr pic_num in the descending pic_num */
1046    /* order starting from (Curr pic_num - 1)                             */
1047    for(; i4_temp_pic_num >= i4_min_st_pic_num; i4_temp_pic_num--)
1048    {
1049        /* Start from ST head */
1050        ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1051        for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1052        {
1053            if((WORD32)ps_next_dpb->ps_pic_buf->i4_pic_num == i4_temp_pic_num)
1054            {
1055                /* Copy info in pic buffer */
1056                ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1057                                                   ps_next_dpb->ps_pic_buf);
1058                ps_ref_pic_buf_lx++;
1059                u1_L0++;
1060                break;
1061            }
1062            ps_next_dpb = ps_next_dpb->ps_prev_short;
1063        }
1064    }
1065
1066    /* Arrange all Long term buffers in ascending order, in LongtermIndex */
1067    /* Start from LT head */
1068    u1_num_short_term_bufs = u1_L0;
1069    for(u4_lt_index = u1_min_lt_index; u4_lt_index <= u1_max_lt_index;
1070                    u4_lt_index++)
1071    {
1072        ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
1073        for(i = 0; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
1074        {
1075            if(ps_next_dpb->u1_lt_idx == u4_lt_index)
1076            {
1077                ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1078                                                   ps_next_dpb->ps_pic_buf);
1079
1080                ps_ref_pic_buf_lx->u1_long_term_pic_num =
1081                                ps_ref_pic_buf_lx->u1_long_term_frm_idx;
1082                ps_ref_pic_buf_lx++;
1083                u1_L0++;
1084                break;
1085            }
1086            ps_next_dpb = ps_next_dpb->ps_prev_long;
1087        }
1088    }
1089
1090    if(u1_field_pic_flag)
1091    {
1092        /* Initialize the rest of the entries in the */
1093        /* reference list to handle of errors        */
1094        {
1095            UWORD8 u1_i;
1096            pic_buffer_t *ps_ref_pic;
1097
1098            ps_ref_pic = ps_dpb_mgr->ps_init_dpb[0][0] + MAX_REF_BUFS;
1099
1100            if(NULL == ps_ref_pic->pu1_buf1)
1101            {
1102                ps_ref_pic = ps_dec->ps_cur_pic;
1103            }
1104            for(u1_i = u1_L0; u1_i < u1_max_ref_idx_l0; u1_i++)
1105            {
1106                *ps_ref_pic_buf_lx = *ps_ref_pic;
1107                ps_ref_pic_buf_lx++;
1108            }
1109        }
1110
1111        ih264d_convert_frm_to_fld_list(
1112                        ps_dpb_mgr->ps_init_dpb[0][0] + MAX_REF_BUFS, &u1_L0,
1113                        ps_dec, u1_num_short_term_bufs);
1114
1115        ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[0][0] + u1_L0;
1116    }
1117
1118    /* Initialize the rest of the entries in the */
1119    /* reference list to handle of errors        */
1120    {
1121        UWORD8 u1_i;
1122        pic_buffer_t *ps_ref_pic;
1123
1124        ps_ref_pic = ps_dpb_mgr->ps_init_dpb[0][0];
1125
1126        if(NULL == ps_ref_pic->pu1_buf1)
1127        {
1128            ps_ref_pic = ps_dec->ps_cur_pic;
1129        }
1130        for(u1_i = u1_L0; u1_i < u1_max_ref_idx_l0; u1_i++)
1131        {
1132            *ps_ref_pic_buf_lx = *ps_ref_pic;
1133            ps_ref_pic_buf_lx++;
1134        }
1135    }
1136    ps_dec->ps_cur_slice->u1_initial_list_size[0] = u1_L0;
1137}
1138
1139