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      1 /******************************************************************************
      2 *
      3 * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
      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 /**
     19  *******************************************************************************
     20  * @file
     21  *  ihevcd_process_slice.c
     22  *
     23  * @brief
     24  *  Contains functions for processing slice data
     25  *
     26  * @author
     27  *  Harish
     28  *
     29  * @par List of Functions:
     30  *
     31  * @remarks
     32  *  None
     33  *
     34  *******************************************************************************
     35  */
     36 /*****************************************************************************/
     37 /* File Includes                                                             */
     38 /*****************************************************************************/
     39 #include <stdio.h>
     40 #include <stddef.h>
     41 #include <stdlib.h>
     42 #include <string.h>
     43 #include <assert.h>
     44 
     45 #include "ihevc_typedefs.h"
     46 #include "iv.h"
     47 #include "ivd.h"
     48 #include "ihevcd_cxa.h"
     49 #include "ithread.h"
     50 
     51 #include "ihevc_defs.h"
     52 #include "ihevc_debug.h"
     53 #include "ihevc_defs.h"
     54 #include "ihevc_structs.h"
     55 #include "ihevc_macros.h"
     56 #include "ihevc_platform_macros.h"
     57 #include "ihevc_cabac_tables.h"
     58 #include "ihevc_padding.h"
     59 #include "ihevc_iquant_itrans_recon.h"
     60 #include "ihevc_chroma_iquant_itrans_recon.h"
     61 #include "ihevc_recon.h"
     62 #include "ihevc_chroma_recon.h"
     63 #include "ihevc_iquant_recon.h"
     64 #include "ihevc_chroma_iquant_recon.h"
     65 #include "ihevc_intra_pred.h"
     66 
     67 #include "ihevc_error.h"
     68 #include "ihevc_common_tables.h"
     69 #include "ihevc_quant_tables.h"
     70 #include "ihevcd_common_tables.h"
     71 
     72 #include "ihevcd_profile.h"
     73 #include "ihevcd_trace.h"
     74 #include "ihevcd_defs.h"
     75 #include "ihevcd_function_selector.h"
     76 #include "ihevcd_structs.h"
     77 #include "ihevcd_error.h"
     78 #include "ihevcd_nal.h"
     79 #include "ihevcd_bitstream.h"
     80 #include "ihevcd_job_queue.h"
     81 #include "ihevcd_utils.h"
     82 #include "ihevcd_debug.h"
     83 #include "ihevcd_get_mv.h"
     84 #include "ihevcd_inter_pred.h"
     85 #include "ihevcd_iquant_itrans_recon_ctb.h"
     86 #include "ihevcd_boundary_strength.h"
     87 #include "ihevcd_deblk.h"
     88 #include "ihevcd_fmt_conv.h"
     89 #include "ihevcd_sao.h"
     90 #include "ihevcd_profile.h"
     91 
     92 IHEVCD_ERROR_T ihevcd_fmt_conv(codec_t *ps_codec,
     93                                process_ctxt_t *ps_proc,
     94                                UWORD8 *pu1_y_dst,
     95                                UWORD8 *pu1_u_dst,
     96                                UWORD8 *pu1_v_dst,
     97                                WORD32 cur_row,
     98                                WORD32 num_rows);
     99 
    100 typedef enum
    101 {
    102     PROC_ALL,
    103     PROC_INTER_PRED,
    104     PROC_RECON,
    105     PROC_DEBLK,
    106     PROC_SAO
    107 }proc_type_t;
    108 
    109 void ihevcd_proc_map_check(process_ctxt_t *ps_proc, proc_type_t proc_type, WORD32 nctb)
    110 {
    111     tile_t *ps_tile = ps_proc->ps_tile;
    112     sps_t *ps_sps = ps_proc->ps_sps;
    113     pps_t *ps_pps = ps_proc->ps_pps;
    114     codec_t *ps_codec = ps_proc->ps_codec;
    115     WORD32 idx;
    116     WORD32 nop_cnt;
    117     WORD32 bit_pos = proc_type;
    118     WORD32 bit_mask = (1 << bit_pos);
    119 
    120     if(ps_proc->i4_check_proc_status)
    121     {
    122         nop_cnt = PROC_NOP_CNT;
    123         while(1)
    124         {
    125             volatile UWORD8 *pu1_buf;
    126             volatile WORD32 status;
    127             status = 1;
    128             /* Check if all dependencies for the next nCTBs are met */
    129             {
    130                 WORD32 x_pos;
    131 
    132                 {
    133                     /* Check if the top right of next nCTBs are processed */
    134                     if(ps_proc->i4_ctb_y > 0)
    135                     {
    136                         x_pos = (ps_proc->i4_ctb_tile_x + nctb);
    137                         idx = MIN(x_pos, (ps_tile->u2_wd - 1));
    138 
    139                         /* Check if top-right CTB for the last CTB in nCTB is within the tile */
    140                         {
    141                             idx += ps_tile->u1_pos_x;
    142                             idx += ((ps_proc->i4_ctb_y - 1)
    143                                             * ps_sps->i2_pic_wd_in_ctb);
    144                             pu1_buf = (ps_codec->pu1_proc_map + idx);
    145                             status = *pu1_buf & bit_mask;
    146                         }
    147                     }
    148                 }
    149 
    150                 /* If tiles are enabled, then test left and top-left as well */
    151                 ps_pps = ps_proc->ps_pps;
    152                 if(ps_pps->i1_tiles_enabled_flag)
    153                 {
    154                     /*Check if left ctb is processed*/
    155                     if((ps_proc->i4_ctb_x > 0) && ((0 != status)))
    156                     {
    157                         x_pos   = ps_tile->u1_pos_x + ps_proc->i4_ctb_tile_x - 1;
    158                         idx     = x_pos + (ps_proc->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb);
    159                         pu1_buf = (ps_codec->pu1_proc_map + idx);
    160                         status  = *pu1_buf & bit_mask;
    161                     }
    162 
    163                     /*Check if top left ctb is processed*/
    164                     if((ps_proc->i4_ctb_x > 0) && (0 != status) && (ps_proc->i4_ctb_y > 0))
    165                     {
    166                         x_pos   = ps_tile->u1_pos_x + ps_proc->i4_ctb_tile_x - 1;
    167                         idx     = x_pos + ((ps_proc->i4_ctb_y - 1) * ps_sps->i2_pic_wd_in_ctb);
    168                         pu1_buf = (ps_codec->pu1_proc_map + idx);
    169                         status  = *pu1_buf & bit_mask;
    170                     }
    171                 }
    172             }
    173 
    174             if(status)
    175                 break;
    176 
    177             /* if dependencies are not met, then wait for few cycles.
    178              * Even after few iterations, if the dependencies are not met then yield
    179              */
    180             if(nop_cnt > 0)
    181             {
    182                 NOP(128);
    183                 nop_cnt -= 128;
    184             }
    185             else
    186             {
    187                 nop_cnt = PROC_NOP_CNT;
    188                 ithread_yield();
    189                 //NOP(128 * 16);
    190             }
    191         }
    192     }
    193 }
    194 
    195 void ihevcd_proc_map_update(process_ctxt_t *ps_proc, proc_type_t proc_type, WORD32 nctb)
    196 {
    197     codec_t *ps_codec = ps_proc->ps_codec;
    198     WORD32 i, idx;
    199     WORD32 bit_pos = proc_type;
    200     WORD32 bit_mask = (1 << bit_pos);
    201 
    202     /* Update the current CTBs processing status */
    203     if(ps_proc->i4_check_proc_status)
    204     {
    205         for(i = 0; i < nctb; i++)
    206         {
    207             sps_t *ps_sps = ps_proc->ps_sps;
    208             UWORD8 *pu1_buf;
    209             idx = (ps_proc->i4_ctb_x + i);
    210             idx += ((ps_proc->i4_ctb_y) * ps_sps->i2_pic_wd_in_ctb);
    211             pu1_buf = (ps_codec->pu1_proc_map + idx);
    212             *pu1_buf = *pu1_buf | bit_mask;
    213         }
    214     }
    215 }
    216 
    217 
    218 void ihevcd_slice_hdr_update(process_ctxt_t *ps_proc)
    219 {
    220 
    221     /* Slice x and y are initialized in proc_init. But initialize slice x and y count here
    222      *  if a new slice begins at the middle of a row since proc_init is invoked only at the beginning of each row */
    223     if(!((ps_proc->i4_ctb_x == 0) && (ps_proc->i4_ctb_y == 0)))
    224     {
    225         slice_header_t *ps_slice_hdr_next = ps_proc->ps_codec->ps_slice_hdr_base + ((ps_proc->i4_cur_slice_idx + 1) & (MAX_SLICE_HDR_CNT - 1));
    226 
    227         if((ps_slice_hdr_next->i2_ctb_x == ps_proc->i4_ctb_x)
    228                         && (ps_slice_hdr_next->i2_ctb_y == ps_proc->i4_ctb_y))
    229         {
    230             if(0 == ps_slice_hdr_next->i1_dependent_slice_flag)
    231             {
    232                 ps_proc->i4_ctb_slice_x = 0;
    233                 ps_proc->i4_ctb_slice_y = 0;
    234             }
    235 
    236             ps_proc->i4_cur_slice_idx++;
    237             ps_proc->ps_slice_hdr = ps_slice_hdr_next;
    238         }
    239 
    240     }
    241 }
    242 
    243 void ihevcd_ctb_pos_update(process_ctxt_t *ps_proc, WORD32 nctb)
    244 {
    245     WORD32 tile_start_ctb_idx, slice_start_ctb_idx;
    246     slice_header_t *ps_slice_hdr = ps_proc->ps_slice_hdr;
    247     tile_t *ps_tile = ps_proc->ps_tile;
    248     sps_t *ps_sps = ps_proc->ps_sps;
    249 
    250     /* Update x and y positions */
    251     ps_proc->i4_ctb_tile_x += nctb;
    252     ps_proc->i4_ctb_x += nctb;
    253 
    254     ps_proc->i4_ctb_slice_x += nctb;
    255     /*If tile are enabled, then handle the tile & slice counters differently*/
    256     if(ps_proc->ps_pps->i1_tiles_enabled_flag)
    257     {
    258         /* Update slice counters*/
    259         slice_start_ctb_idx = ps_slice_hdr->i2_ctb_x + (ps_slice_hdr->i2_ctb_y * ps_sps->i2_pic_wd_in_ctb);
    260         tile_start_ctb_idx = ps_tile->u1_pos_x + (ps_tile->u1_pos_y * ps_sps->i2_pic_wd_in_ctb);
    261         /*
    262          * There can be 2 cases where slice counters must be handled differently.
    263          * 1 - Multiple tiles span across a single/one of the many slice.
    264          * 2 - Multiple slices span across a single/one of the many tiles.
    265          */
    266 
    267         /*Case 1 */
    268         if(slice_start_ctb_idx < tile_start_ctb_idx)
    269         {
    270             /*End of tile row*/
    271             if(ps_proc->i4_ctb_x > ps_slice_hdr->i2_ctb_x)
    272             {
    273                 if(ps_proc->i4_ctb_slice_x >= (ps_tile->u2_wd + ps_tile->u1_pos_x))
    274                 {
    275                     ps_proc->i4_ctb_slice_y++;
    276                     ps_proc->i4_ctb_slice_x = ps_proc->i4_ctb_slice_x
    277                                     - ps_tile->u2_wd;
    278                 }
    279             }
    280             else
    281             {
    282                 WORD32 temp_stride = (ps_sps->i2_pic_wd_in_ctb - ps_slice_hdr->i2_ctb_x);
    283                 if(ps_proc->i4_ctb_slice_x >= (temp_stride + ps_tile->u2_wd + ps_tile->u1_pos_x))
    284                 {
    285                     ps_proc->i4_ctb_slice_y++;
    286                     ps_proc->i4_ctb_slice_x = ps_proc->i4_ctb_slice_x
    287                                     - ps_tile->u2_wd;
    288                 }
    289             }
    290         }
    291         /*Case 2*/
    292         else if(ps_proc->i4_ctb_slice_x >= (ps_tile->u2_wd))
    293         {
    294             /*End of tile row*/
    295             ps_proc->i4_ctb_slice_y++;
    296             ps_proc->i4_ctb_slice_x = 0;
    297         }
    298     }
    299     else
    300     {
    301         if(ps_proc->i4_ctb_slice_x >= ps_tile->u2_wd)
    302         {
    303             ps_proc->i4_ctb_slice_y++;
    304             ps_proc->i4_ctb_slice_x = ps_proc->i4_ctb_slice_x
    305                             - ps_tile->u2_wd;
    306         }
    307     }
    308 }
    309 
    310 void ihevcd_ctb_avail_update(process_ctxt_t *ps_proc)
    311 {
    312     slice_header_t *ps_slice_hdr = ps_proc->ps_slice_hdr;
    313     sps_t *ps_sps = ps_proc->ps_sps;
    314     tile_t *ps_tile_prev;
    315     tile_t *ps_tile = ps_proc->ps_tile;
    316     WORD32 cur_pu_idx;
    317     WORD32 tile_start_ctb_idx, slice_start_ctb_idx;
    318     WORD16 i2_wd_in_ctb;
    319     WORD32 continuous_tiles = 0;
    320     WORD32 cur_ctb_idx;
    321     WORD32 check_tile_wd;
    322 
    323     if((0 != ps_tile->u1_pos_x) && (0 != ps_tile->u1_pos_y))
    324     {
    325         ps_tile_prev = ps_tile - 1;
    326     }
    327     else
    328     {
    329         ps_tile_prev = ps_tile;
    330     }
    331 
    332 
    333     check_tile_wd = ps_slice_hdr->i2_ctb_x + ps_tile_prev->u2_wd;
    334     if(!(((check_tile_wd >= ps_sps->i2_pic_wd_in_ctb) && (check_tile_wd % ps_sps->i2_pic_wd_in_ctb == ps_tile->u1_pos_x))
    335                                     || ((ps_slice_hdr->i2_ctb_x == ps_tile->u1_pos_x))))
    336     {
    337         continuous_tiles = 1;
    338     }
    339 
    340     slice_start_ctb_idx = ps_slice_hdr->i2_ctb_x + (ps_slice_hdr->i2_ctb_y * ps_sps->i2_pic_wd_in_ctb);
    341     tile_start_ctb_idx = ps_tile->u1_pos_x + (ps_tile->u1_pos_y * ps_sps->i2_pic_wd_in_ctb);
    342 
    343     if((slice_start_ctb_idx < tile_start_ctb_idx) && (continuous_tiles))
    344     {
    345         //Slices span across multiple tiles.
    346         i2_wd_in_ctb = ps_sps->i2_pic_wd_in_ctb;
    347     }
    348     else
    349     {
    350         i2_wd_in_ctb = ps_tile->u2_wd;
    351     }
    352     cur_ctb_idx = ps_proc->i4_ctb_x
    353                     + ps_proc->i4_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
    354 
    355     /* Ctb level availability */
    356     /* Bottom left will not be available at a CTB level, no need to pass this */
    357     ps_proc->u1_top_ctb_avail = 1;
    358     ps_proc->u1_left_ctb_avail = 1;
    359     ps_proc->u1_top_lt_ctb_avail = 1;
    360     ps_proc->u1_top_rt_ctb_avail = 1;
    361     /* slice and tile boundaries */
    362 
    363     if((0 == ps_proc->i4_ctb_y) || (0 == ps_proc->i4_ctb_tile_y))
    364     {
    365         ps_proc->u1_top_ctb_avail = 0;
    366         ps_proc->u1_top_lt_ctb_avail = 0;
    367         ps_proc->u1_top_rt_ctb_avail = 0;
    368     }
    369 
    370     if((0 == ps_proc->i4_ctb_x) || (0 == ps_proc->i4_ctb_tile_x))
    371     {
    372         ps_proc->u1_left_ctb_avail = 0;
    373         ps_proc->u1_top_lt_ctb_avail = 0;
    374         if((0 == ps_proc->i4_ctb_slice_y) || (0 == ps_proc->i4_ctb_tile_y))
    375         {
    376             ps_proc->u1_top_ctb_avail = 0;
    377             if((i2_wd_in_ctb - 1) != ps_proc->i4_ctb_slice_x)
    378             {
    379                 ps_proc->u1_top_rt_ctb_avail = 0;
    380             }
    381         }
    382     }
    383     /*For slices not beginning at start of a ctb row*/
    384     else if(ps_proc->i4_ctb_x > 0)
    385     {
    386         if((0 == ps_proc->i4_ctb_slice_y) || (0 == ps_proc->i4_ctb_tile_y))
    387         {
    388             ps_proc->u1_top_ctb_avail = 0;
    389             ps_proc->u1_top_lt_ctb_avail = 0;
    390             if(0 == ps_proc->i4_ctb_slice_x)
    391             {
    392                 ps_proc->u1_left_ctb_avail = 0;
    393             }
    394             if((i2_wd_in_ctb - 1) != ps_proc->i4_ctb_slice_x)
    395             {
    396                 ps_proc->u1_top_rt_ctb_avail = 0;
    397             }
    398         }
    399         else if((1 == ps_proc->i4_ctb_slice_y) && (0 == ps_proc->i4_ctb_slice_x))
    400         {
    401             ps_proc->u1_top_lt_ctb_avail = 0;
    402         }
    403     }
    404 
    405     if((ps_proc->i4_ctb_x == (ps_sps->i2_pic_wd_in_ctb - 1)) || ((ps_tile->u2_wd - 1) == ps_proc->i4_ctb_tile_x))
    406     {
    407         ps_proc->u1_top_rt_ctb_avail = 0;
    408     }
    409 
    410 
    411     {
    412         WORD32 next_ctb_idx;
    413         next_ctb_idx = cur_ctb_idx + 1;
    414 
    415         if(ps_tile->u2_wd == (ps_proc->i4_ctb_tile_x + 1))
    416         {
    417             if((ps_proc->i4_ctb_tile_y + 1) == ps_tile->u2_ht)
    418             {
    419                 //Last tile
    420                 if(((ps_proc->i4_ctb_tile_y + 1 + ps_tile->u1_pos_y) == ps_sps->i2_pic_ht_in_ctb) && ((ps_proc->i4_ctb_tile_x + 1 + ps_tile->u1_pos_x) == ps_sps->i2_pic_wd_in_ctb))
    421                 {
    422                     next_ctb_idx = cur_ctb_idx + 1;
    423                 }
    424                 else //Not last tile, but new tile
    425                 {
    426                     tile_t *ps_tile_next = ps_proc->ps_tile + 1;
    427                     next_ctb_idx = ps_tile_next->u1_pos_x + (ps_tile_next->u1_pos_y * ps_sps->i2_pic_wd_in_ctb);
    428                 }
    429             }
    430             else //End of each tile row
    431             {
    432                 next_ctb_idx = ((ps_tile->u1_pos_y + ps_proc->i4_ctb_tile_y + 1) * ps_sps->i2_pic_wd_in_ctb) + ps_tile->u1_pos_x;
    433             }
    434         }
    435         ps_proc->i4_next_pu_ctb_cnt = next_ctb_idx;
    436         ps_proc->i4_ctb_pu_cnt =
    437                         ps_proc->pu4_pic_pu_idx[next_ctb_idx]
    438                         - ps_proc->pu4_pic_pu_idx[cur_ctb_idx];
    439         cur_pu_idx = ps_proc->pu4_pic_pu_idx[cur_ctb_idx];
    440         ps_proc->i4_ctb_start_pu_idx = cur_pu_idx;
    441         ps_proc->ps_pu = &ps_proc->ps_pic_pu[cur_pu_idx];
    442     }
    443 }
    444 
    445 void ihevcd_update_ctb_tu_cnt(process_ctxt_t *ps_proc)
    446 {
    447     sps_t *ps_sps = ps_proc->ps_sps;
    448     codec_t *ps_codec = ps_proc->ps_codec;
    449     WORD32 cur_ctb_idx;
    450 
    451     cur_ctb_idx = ps_proc->i4_ctb_x
    452                     + ps_proc->i4_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
    453 
    454     {
    455         tile_t *ps_tile;
    456         WORD32 next_ctb_tu_idx;
    457         ps_tile = ps_proc->ps_tile;
    458 
    459 
    460         if(1 == ps_codec->i4_num_cores)
    461         {
    462             next_ctb_tu_idx = cur_ctb_idx % RESET_TU_BUF_NCTB + 1;
    463             if(ps_tile->u2_wd == (ps_proc->i4_ctb_tile_x + 1))
    464             {
    465                 if((ps_proc->i4_ctb_tile_y + 1) == ps_tile->u2_ht)
    466                 {
    467                     //Last tile
    468                     if(((ps_proc->i4_ctb_tile_y + 1 + ps_tile->u1_pos_y) == ps_sps->i2_pic_ht_in_ctb) && ((ps_proc->i4_ctb_tile_x + 1 + ps_tile->u1_pos_x) == ps_sps->i2_pic_wd_in_ctb))
    469                     {
    470                         next_ctb_tu_idx = (cur_ctb_idx % RESET_TU_BUF_NCTB) + 1;
    471                     }
    472                     else //Not last tile, but new tile
    473                     {
    474                         tile_t *ps_tile_next = ps_proc->ps_tile + 1;
    475                         next_ctb_tu_idx = ps_tile_next->u1_pos_x + (ps_tile_next->u1_pos_y * ps_sps->i2_pic_wd_in_ctb);
    476                     }
    477                 }
    478                 else //End of each tile row
    479                 {
    480                     next_ctb_tu_idx = ((ps_tile->u1_pos_y + ps_proc->i4_ctb_tile_y + 1) * ps_sps->i2_pic_wd_in_ctb) + ps_tile->u1_pos_x;
    481                 }
    482             }
    483             ps_proc->i4_next_tu_ctb_cnt = next_ctb_tu_idx;
    484             ps_proc->i4_ctb_tu_cnt = ps_proc->pu4_pic_tu_idx[next_ctb_tu_idx] - ps_proc->pu4_pic_tu_idx[cur_ctb_idx % RESET_TU_BUF_NCTB];
    485         }
    486         else
    487         {
    488             next_ctb_tu_idx = cur_ctb_idx + 1;
    489             if(ps_tile->u2_wd == (ps_proc->i4_ctb_tile_x + 1))
    490             {
    491                 if((ps_proc->i4_ctb_tile_y + 1) == ps_tile->u2_ht)
    492                 {
    493                     //Last tile
    494                     if(((ps_proc->i4_ctb_tile_y + 1 + ps_tile->u1_pos_y) == ps_sps->i2_pic_ht_in_ctb) && ((ps_proc->i4_ctb_tile_x + 1 + ps_tile->u1_pos_x) == ps_sps->i2_pic_wd_in_ctb))
    495                     {
    496                         next_ctb_tu_idx = (cur_ctb_idx % RESET_TU_BUF_NCTB) + 1;
    497                     }
    498                     else //Not last tile, but new tile
    499                     {
    500                         tile_t *ps_tile_next = ps_proc->ps_tile + 1;
    501                         next_ctb_tu_idx = ps_tile_next->u1_pos_x + (ps_tile_next->u1_pos_y * ps_sps->i2_pic_wd_in_ctb);
    502                     }
    503                 }
    504                 else //End of each tile row
    505                 {
    506                     next_ctb_tu_idx = ((ps_tile->u1_pos_y + ps_proc->i4_ctb_tile_y + 1) * ps_sps->i2_pic_wd_in_ctb) + ps_tile->u1_pos_x;
    507                 }
    508             }
    509             ps_proc->i4_next_tu_ctb_cnt = next_ctb_tu_idx;
    510             ps_proc->i4_ctb_tu_cnt = ps_proc->pu4_pic_tu_idx[next_ctb_tu_idx] -
    511                             ps_proc->pu4_pic_tu_idx[cur_ctb_idx];
    512         }
    513     }
    514 }
    515 
    516 IHEVCD_ERROR_T ihevcd_process(process_ctxt_t *ps_proc)
    517 {
    518     IHEVCD_ERROR_T ret = (IHEVCD_ERROR_T)IHEVCD_SUCCESS;
    519     codec_t *ps_codec;
    520     sps_t *ps_sps = ps_proc->ps_sps;
    521 
    522     WORD32 nctb;
    523     WORD32 i;
    524     WORD32 idx;
    525     WORD32 nop_cnt;
    526     WORD32 num_minpu_in_ctb;
    527     WORD32 cur_slice_idx, cur_ctb_tile_x, cur_ctb_slice_x, cur_ctb_tile_y, cur_ctb_slice_y;
    528     WORD32 nxt_ctb_slice_y, nxt_ctb_slice_x;
    529     tu_t *ps_tu_cur, *ps_tu_nxt;
    530     UWORD8 *pu1_pu_map_cur, *pu1_pu_map_nxt;
    531     WORD32 num_ctb, num_ctb_tmp;
    532     proc_type_t proc_type;
    533 
    534 
    535     WORD32 ctb_size = 1 << ps_sps->i1_log2_ctb_size;
    536 
    537     PROFILE_DISABLE_PROCESS_CTB();
    538 
    539     ps_codec = ps_proc->ps_codec;
    540     num_minpu_in_ctb = (ctb_size / MIN_PU_SIZE) * (ctb_size / MIN_PU_SIZE);
    541 
    542     nctb = MIN(ps_codec->i4_proc_nctb, ps_proc->i4_ctb_cnt);
    543     nctb = MIN(nctb, (ps_proc->ps_tile->u2_wd - ps_proc->i4_ctb_tile_x));
    544 
    545     if(ps_proc->i4_cur_slice_idx > (MAX_SLICE_HDR_CNT - 2 * ps_sps->i2_pic_wd_in_ctb))
    546     {
    547         num_ctb = 1;
    548     }
    549     else
    550     {
    551         num_ctb = ps_proc->i4_nctb;
    552     }
    553     nxt_ctb_slice_y = ps_proc->i4_ctb_slice_y;
    554     nxt_ctb_slice_x = ps_proc->i4_ctb_slice_x;
    555     pu1_pu_map_nxt = ps_proc->pu1_pu_map;
    556     ps_tu_nxt = ps_proc->ps_tu;
    557 
    558     while(ps_proc->i4_ctb_cnt)
    559     {
    560         ps_proc->i4_ctb_slice_y = nxt_ctb_slice_y;
    561         ps_proc->i4_ctb_slice_x = nxt_ctb_slice_x;
    562         ps_proc->pu1_pu_map = pu1_pu_map_nxt;
    563         ps_proc->ps_tu = ps_tu_nxt;
    564 
    565         cur_ctb_tile_x = ps_proc->i4_ctb_tile_x;
    566         cur_ctb_tile_y = ps_proc->i4_ctb_tile_y;
    567         cur_ctb_slice_x = ps_proc->i4_ctb_slice_x;
    568         cur_ctb_slice_y = ps_proc->i4_ctb_slice_y;
    569         cur_slice_idx = ps_proc->i4_cur_slice_idx;
    570         ps_tu_cur = ps_proc->ps_tu;
    571         pu1_pu_map_cur = ps_proc->pu1_pu_map;
    572         proc_type = PROC_INTER_PRED;
    573 
    574         if(ps_proc->i4_ctb_cnt < num_ctb)
    575         {
    576             num_ctb = ps_proc->i4_ctb_cnt;
    577         }
    578         num_ctb_tmp = num_ctb;
    579 
    580         while(num_ctb_tmp)
    581         {
    582             slice_header_t *ps_slice_hdr;
    583             tile_t *ps_tile = ps_proc->ps_tile;
    584 
    585             /* Waiting for Parsing to be done*/
    586             {
    587 
    588 
    589                 nop_cnt = PROC_NOP_CNT;
    590                 if(ps_proc->i4_check_parse_status || ps_proc->i4_check_proc_status)
    591                 {
    592                     while(1)
    593                     {
    594                         volatile UWORD8 *pu1_buf;
    595                         volatile WORD32 status;
    596                         status = 1;
    597                         /* Check if all dependencies for the next nCTBs are met */
    598                         /* Check if the next nCTBs are parsed */
    599                         if(ps_proc->i4_check_parse_status)
    600                         {
    601                             idx = (ps_proc->i4_ctb_x + nctb - 1);
    602                             idx += (ps_proc->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb);
    603                             pu1_buf = (ps_codec->pu1_parse_map + idx);
    604                             status = *pu1_buf;
    605                         }
    606 
    607                         if(status)
    608                             break;
    609 
    610                         /* if dependencies are not met, then wait for few cycles.
    611                          * Even after few iterations, if the dependencies are not met then yield
    612                          */
    613                         if(nop_cnt > 0)
    614                         {
    615                             NOP(128);
    616                             nop_cnt -= 128;
    617                         }
    618                         else
    619                         {
    620                             nop_cnt = PROC_NOP_CNT;
    621                             ithread_yield();
    622                         }
    623                     }
    624                 }
    625             }
    626 
    627             /* Check proc map to ensure dependencies for recon are met */
    628             ihevcd_proc_map_check(ps_proc, proc_type, nctb);
    629 
    630             ihevcd_slice_hdr_update(ps_proc);
    631             ps_slice_hdr = ps_proc->ps_slice_hdr;
    632 
    633             //ihevcd_mv_prediction();
    634             //ihevcd_lvl_unpack();
    635             //ihevcd_inter_iq_it_recon();
    636             //Following does prediction, iq, it and recon on a TU by TU basis for intra TUs
    637             //ihevcd_intra_process();
    638             //ihevcd_ctb_boundary_strength_islice(ps_proc, ctb_size);
    639             //ihevcd_deblk_ctb(ps_proc);
    640 
    641             /* iq,it recon of Intra TU */
    642             {
    643                 UWORD32 *pu4_ctb_top_pu_idx, *pu4_ctb_left_pu_idx, *pu4_ctb_top_left_pu_idx;
    644                 WORD32 cur_ctb_idx;
    645 
    646                 ihevcd_ctb_avail_update(ps_proc);
    647 
    648 #if DEBUG_DUMP_FRAME_BUFFERS_INFO
    649                 au1_pic_avail_ctb_flags[ps_proc->i4_ctb_x + ps_proc->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb] =
    650                                 ((ps_proc->u1_top_ctb_avail << 3) | (ps_proc->u1_left_ctb_avail << 2) | (ps_proc->u1_top_lt_ctb_avail << 1) | (ps_proc->u1_top_rt_ctb_avail));
    651                 au4_pic_ctb_slice_xy[ps_proc->i4_ctb_x + ps_proc->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb] =
    652                                 (((UWORD16)ps_proc->i4_ctb_slice_x << 16) | ((UWORD16)ps_proc->i4_ctb_slice_y << 16));
    653 #endif
    654 
    655                 /*************************************************/
    656                 /****************   MV pred **********************/
    657                 /*************************************************/
    658                 if(PSLICE == ps_slice_hdr->i1_slice_type
    659                                 || BSLICE == ps_slice_hdr->i1_slice_type)
    660                 {
    661                     mv_ctxt_t s_mv_ctxt;
    662 
    663                     pu4_ctb_top_pu_idx = ps_proc->pu4_pic_pu_idx_top
    664                                     + (ps_proc->i4_ctb_x * ctb_size / MIN_PU_SIZE);
    665                     pu4_ctb_left_pu_idx = ps_proc->pu4_pic_pu_idx_left;
    666                     pu4_ctb_top_left_pu_idx = &ps_proc->u4_ctb_top_left_pu_idx;
    667 
    668                     /* Initializing s_mv_ctxt */
    669                     if(ps_codec->i4_num_cores > MV_PRED_NUM_CORES_THRESHOLD)
    670                     {
    671                         s_mv_ctxt.ps_pps = ps_proc->ps_pps;
    672                         s_mv_ctxt.ps_sps = ps_proc->ps_sps;
    673                         s_mv_ctxt.ps_slice_hdr = ps_proc->ps_slice_hdr;
    674                         s_mv_ctxt.i4_ctb_x = ps_proc->i4_ctb_x;
    675                         s_mv_ctxt.i4_ctb_y = ps_proc->i4_ctb_y;
    676                         s_mv_ctxt.ps_pu = ps_proc->ps_pu;
    677                         s_mv_ctxt.ps_pic_pu = ps_proc->ps_pic_pu;
    678                         s_mv_ctxt.ps_tile = ps_tile;
    679                         s_mv_ctxt.pu4_pic_pu_idx_map = ps_proc->pu4_pic_pu_idx_map;
    680                         s_mv_ctxt.pu4_pic_pu_idx = ps_proc->pu4_pic_pu_idx;
    681                         s_mv_ctxt.pu1_pic_pu_map = ps_proc->pu1_pic_pu_map;
    682                         s_mv_ctxt.i4_ctb_pu_cnt = ps_proc->i4_ctb_pu_cnt;
    683                         s_mv_ctxt.i4_ctb_start_pu_idx = ps_proc->i4_ctb_start_pu_idx;
    684                         s_mv_ctxt.u1_top_ctb_avail = ps_proc->u1_top_ctb_avail;
    685                         s_mv_ctxt.u1_top_rt_ctb_avail = ps_proc->u1_top_rt_ctb_avail;
    686                         s_mv_ctxt.u1_top_lt_ctb_avail = ps_proc->u1_top_lt_ctb_avail;
    687                         s_mv_ctxt.u1_left_ctb_avail = ps_proc->u1_left_ctb_avail;
    688 
    689                         ihevcd_get_mv_ctb(&s_mv_ctxt, pu4_ctb_top_pu_idx,
    690                                           pu4_ctb_left_pu_idx, pu4_ctb_top_left_pu_idx);
    691                     }
    692 
    693                     ihevcd_inter_pred_ctb(ps_proc);
    694                 }
    695                 else if(ps_codec->i4_num_cores > MV_PRED_NUM_CORES_THRESHOLD)
    696                 {
    697                     WORD32 next_ctb_idx, num_pu_per_ctb, ctb_start_pu_idx, pu_cnt;
    698                     pu_t *ps_pu;
    699                     WORD32 num_minpu_in_ctb = (ctb_size / MIN_PU_SIZE) * (ctb_size / MIN_PU_SIZE);
    700                     UWORD8 *pu1_pic_pu_map_ctb = ps_proc->pu1_pic_pu_map +
    701                                     (ps_proc->i4_ctb_x + ps_proc->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb) * num_minpu_in_ctb;
    702                     WORD32 row, col;
    703                     UWORD32 *pu4_nbr_pu_idx = ps_proc->pu4_pic_pu_idx_map;
    704                     WORD32 nbr_pu_idx_strd = MAX_CTB_SIZE / MIN_PU_SIZE + 2;
    705 
    706                     for(row = 0; row < ctb_size / MIN_PU_SIZE; row++)
    707                     {
    708                         for(col = 0; col < ctb_size / MIN_PU_SIZE; col++)
    709                         {
    710                             pu1_pic_pu_map_ctb[row * ctb_size / MIN_PU_SIZE + col] = 0;
    711                         }
    712                     }
    713                     /* Neighbor PU idx update inside CTB */
    714                     /* 1byte per 4x4. Indicates the PU idx that 4x4 block belongs to */
    715 
    716                     cur_ctb_idx = ps_proc->i4_ctb_x
    717                                     + ps_proc->i4_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
    718                     next_ctb_idx = ps_proc->i4_next_pu_ctb_cnt;
    719                     num_pu_per_ctb = ps_proc->pu4_pic_pu_idx[next_ctb_idx]
    720                                     - ps_proc->pu4_pic_pu_idx[cur_ctb_idx];
    721                     ctb_start_pu_idx = ps_proc->pu4_pic_pu_idx[cur_ctb_idx];
    722                     ps_pu = &ps_proc->ps_pic_pu[ctb_start_pu_idx];
    723 
    724                     for(pu_cnt = 0; pu_cnt < num_pu_per_ctb; pu_cnt++, ps_pu++)
    725                     {
    726                         UWORD32 cur_pu_idx;
    727                         WORD32 pu_ht = (ps_pu->b4_ht + 1) << 2;
    728                         WORD32 pu_wd = (ps_pu->b4_wd + 1) << 2;
    729 
    730                         cur_pu_idx = ctb_start_pu_idx + pu_cnt;
    731 
    732                         for(row = 0; row < pu_ht / MIN_PU_SIZE; row++)
    733                             for(col = 0; col < pu_wd / MIN_PU_SIZE; col++)
    734                                 pu4_nbr_pu_idx[(1 + ps_pu->b4_pos_x + col)
    735                                                 + (1 + ps_pu->b4_pos_y + row)
    736                                                 * nbr_pu_idx_strd] =
    737                                                 cur_pu_idx;
    738                     }
    739 
    740                     /* Updating Top and Left pointers */
    741                     {
    742                         WORD32 rows_remaining = ps_sps->i2_pic_height_in_luma_samples
    743                                         - (ps_proc->i4_ctb_y << ps_sps->i1_log2_ctb_size);
    744                         WORD32 ctb_size_left = MIN(ctb_size, rows_remaining);
    745 
    746                         /* Top Left */
    747                         /* saving top left before updating top ptr, as updating top ptr will overwrite the top left for the next ctb */
    748                         ps_proc->u4_ctb_top_left_pu_idx = ps_proc->pu4_pic_pu_idx_top[((ps_proc->i4_ctb_x + 1) * ctb_size / MIN_PU_SIZE) - 1];
    749                         for(i = 0; i < ctb_size / MIN_PU_SIZE; i++)
    750                         {
    751                             /* Left */
    752                             /* Last column of au4_nbr_pu_idx */
    753                             ps_proc->pu4_pic_pu_idx_left[i] =
    754                                             pu4_nbr_pu_idx[(ctb_size / MIN_PU_SIZE) + (i + 1) * nbr_pu_idx_strd];
    755                             /* Top */
    756                             /* Last row of au4_nbr_pu_idx */
    757                             ps_proc->pu4_pic_pu_idx_top[(ps_proc->i4_ctb_x * ctb_size / MIN_PU_SIZE) + i] =
    758                                             pu4_nbr_pu_idx[(ctb_size_left / MIN_PU_SIZE) * nbr_pu_idx_strd + i + 1];
    759 
    760                         }
    761                     }
    762                 }
    763             }
    764 
    765             if(ps_proc->ps_pps->i1_tiles_enabled_flag)
    766             {
    767                 /*Update the tile index buffer with tile information for the current ctb*/
    768                 UWORD16 *pu1_tile_idx = ps_proc->pu1_tile_idx;
    769                 pu1_tile_idx[(ps_proc->i4_ctb_x + (ps_proc->i4_ctb_y * ps_sps->i2_pic_wd_in_ctb))]
    770                                 = ps_proc->i4_cur_tile_idx;
    771             }
    772 
    773             /*************************************************/
    774             /*********** BS, QP and Deblocking  **************/
    775             /*************************************************/
    776             /* Boundary strength call has to be after IQ IT recon since QP population needs ps_proc->i4_qp_const_inc_ctb flag */
    777 
    778             {
    779                 slice_header_t *ps_slice_hdr;
    780                 ps_slice_hdr = ps_proc->ps_slice_hdr;
    781 
    782 
    783                 /* Check if deblock is disabled for the current slice or if it is disabled for the current picture
    784                  * because of disable deblock api
    785                  */
    786                 if(0 == ps_codec->i4_disable_deblk_pic)
    787                 {
    788                     if(ps_codec->i4_num_cores > MV_PRED_NUM_CORES_THRESHOLD)
    789                     {
    790                         if((0 == ps_slice_hdr->i1_slice_disable_deblocking_filter_flag) &&
    791                                         (0 == ps_codec->i4_slice_error))
    792                         {
    793                             ihevcd_update_ctb_tu_cnt(ps_proc);
    794                             ps_proc->s_bs_ctxt.ps_pps = ps_proc->ps_pps;
    795                             ps_proc->s_bs_ctxt.ps_sps = ps_proc->ps_sps;
    796                             ps_proc->s_bs_ctxt.ps_codec = ps_proc->ps_codec;
    797                             ps_proc->s_bs_ctxt.i4_ctb_tu_cnt = ps_proc->i4_ctb_tu_cnt;
    798                             ps_proc->s_bs_ctxt.i4_ctb_x = ps_proc->i4_ctb_x;
    799                             ps_proc->s_bs_ctxt.i4_ctb_y = ps_proc->i4_ctb_y;
    800                             ps_proc->s_bs_ctxt.i4_ctb_tile_x = ps_proc->i4_ctb_tile_x;
    801                             ps_proc->s_bs_ctxt.i4_ctb_tile_y = ps_proc->i4_ctb_tile_y;
    802                             ps_proc->s_bs_ctxt.i4_ctb_slice_x = ps_proc->i4_ctb_slice_x;
    803                             ps_proc->s_bs_ctxt.i4_ctb_slice_y = ps_proc->i4_ctb_slice_y;
    804                             ps_proc->s_bs_ctxt.ps_tu = ps_proc->ps_tu;
    805                             ps_proc->s_bs_ctxt.ps_pu = ps_proc->ps_pu;
    806                             ps_proc->s_bs_ctxt.pu4_pic_pu_idx_map = ps_proc->pu4_pic_pu_idx_map;
    807                             ps_proc->s_bs_ctxt.i4_next_pu_ctb_cnt = ps_proc->i4_next_pu_ctb_cnt;
    808                             ps_proc->s_bs_ctxt.i4_next_tu_ctb_cnt = ps_proc->i4_next_tu_ctb_cnt;
    809                             ps_proc->s_bs_ctxt.pu1_slice_idx = ps_proc->pu1_slice_idx;
    810                             ps_proc->s_bs_ctxt.ps_slice_hdr = ps_proc->ps_slice_hdr;
    811                             ps_proc->s_bs_ctxt.ps_tile = ps_proc->ps_tile;
    812 
    813                             if(ISLICE == ps_slice_hdr->i1_slice_type)
    814                             {
    815                                 ihevcd_ctb_boundary_strength_islice(&ps_proc->s_bs_ctxt);
    816                             }
    817                             else
    818                             {
    819                                 ihevcd_ctb_boundary_strength_pbslice(&ps_proc->s_bs_ctxt);
    820                             }
    821                         }
    822                         else
    823                         {
    824                             WORD32 bs_strd = (ps_sps->i2_pic_wd_in_ctb + 1) * (ctb_size * ctb_size / 8 / 16);
    825 
    826                             UWORD32 *pu4_vert_bs = (UWORD32 *)((UWORD8 *)ps_proc->s_bs_ctxt.pu4_pic_vert_bs +
    827                                             ps_proc->i4_ctb_x * (ctb_size * ctb_size / 8 / 16) +
    828                                             ps_proc->i4_ctb_y * bs_strd);
    829                             UWORD32 *pu4_horz_bs = (UWORD32 *)((UWORD8 *)ps_proc->s_bs_ctxt.pu4_pic_horz_bs +
    830                                             ps_proc->i4_ctb_x * (ctb_size * ctb_size / 8 / 16) +
    831                                             ps_proc->i4_ctb_y * bs_strd);
    832 
    833                             memset(pu4_vert_bs, 0, (ctb_size / 8 + 1) * (ctb_size / 4) / 8 * 2);
    834                             memset(pu4_horz_bs, 0, (ctb_size / 8) * (ctb_size / 4) / 8 * 2);
    835 
    836                         }
    837                     }
    838                 }
    839             }
    840 
    841             /* Per CTB update the following */
    842             {
    843                 WORD32 cur_ctb_idx = ps_proc->i4_ctb_x
    844                                 + ps_proc->i4_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
    845                 cur_ctb_idx++;
    846 
    847                 ps_proc->pu1_pu_map += nctb * num_minpu_in_ctb;
    848                 ps_proc->ps_tu += ps_proc->i4_ctb_tu_cnt;
    849                 if((1 == ps_codec->i4_num_cores) &&
    850                                 (0 == cur_ctb_idx % RESET_TU_BUF_NCTB))
    851                 {
    852                     ps_proc->ps_tu = ps_proc->ps_pic_tu;
    853                 }
    854                 ps_proc->ps_pu += ps_proc->i4_ctb_pu_cnt;
    855             }
    856 
    857             /* Update proc map for recon*/
    858             ihevcd_proc_map_update(ps_proc, proc_type, nctb);
    859 
    860             num_ctb_tmp -= nctb;
    861             ihevcd_ctb_pos_update(ps_proc, nctb);
    862 
    863         }
    864 
    865         if(cur_slice_idx != ps_proc->i4_cur_slice_idx)
    866         {
    867             ps_proc->ps_slice_hdr = ps_codec->ps_slice_hdr_base + ((cur_slice_idx)&(MAX_SLICE_HDR_CNT - 1));
    868             ps_proc->i4_cur_slice_idx = cur_slice_idx;
    869         }
    870         /* Restore the saved variables  */
    871         num_ctb_tmp = num_ctb;
    872         ps_proc->i4_ctb_x -= num_ctb;
    873         ps_proc->i4_ctb_tile_x = cur_ctb_tile_x;
    874         ps_proc->i4_ctb_slice_x = cur_ctb_slice_x;
    875         ps_proc->i4_ctb_tile_y = cur_ctb_tile_y;
    876         ps_proc->i4_ctb_slice_y = cur_ctb_slice_y;
    877         ps_proc->pu1_pu_map = pu1_pu_map_cur;
    878         ps_proc->ps_tu = ps_tu_cur;
    879         proc_type = PROC_RECON;
    880 
    881         while(num_ctb_tmp)
    882         {
    883 
    884             /* Check proc map to ensure dependencies for recon are met */
    885             ihevcd_proc_map_check(ps_proc, proc_type, nctb);
    886 
    887             ihevcd_slice_hdr_update(ps_proc);
    888 
    889             {
    890 
    891                 ihevcd_ctb_avail_update(ps_proc);
    892 
    893                 /*************************************************/
    894                 /**************** IQ IT RECON  *******************/
    895                 /*************************************************/
    896 
    897                 ihevcd_update_ctb_tu_cnt(ps_proc);
    898 
    899                 /* When scaling matrix is not to be used(scaling_list_enable_flag is zero in SPS),
    900                  * default value of 16 has to be used. Since the value is same for all sizes,
    901                  * same table is used for all cases.
    902                  */
    903                 if(0 == ps_sps->i1_scaling_list_enable_flag)
    904                 {
    905                     ps_proc->api2_dequant_intra_matrix[0] =
    906                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    907                     ps_proc->api2_dequant_intra_matrix[1] =
    908                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    909                     ps_proc->api2_dequant_intra_matrix[2] =
    910                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    911                     ps_proc->api2_dequant_intra_matrix[3] =
    912                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    913 
    914                     ps_proc->api2_dequant_inter_matrix[0] =
    915                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    916                     ps_proc->api2_dequant_inter_matrix[1] =
    917                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    918                     ps_proc->api2_dequant_inter_matrix[2] =
    919                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    920                     ps_proc->api2_dequant_inter_matrix[3] =
    921                                     (WORD16 *)gi2_flat_scale_mat_32x32;
    922                 }
    923                 else
    924                 {
    925                     if(0 == ps_sps->i1_sps_scaling_list_data_present_flag)
    926                     {
    927                         ps_proc->api2_dequant_intra_matrix[0] =
    928                                         (WORD16 *)gi2_flat_scale_mat_32x32;
    929                         ps_proc->api2_dequant_intra_matrix[1] =
    930                                         (WORD16 *)gi2_intra_default_scale_mat_8x8;
    931                         ps_proc->api2_dequant_intra_matrix[2] =
    932                                         (WORD16 *)gi2_intra_default_scale_mat_16x16;
    933                         ps_proc->api2_dequant_intra_matrix[3] =
    934                                         (WORD16 *)gi2_intra_default_scale_mat_32x32;
    935 
    936                         ps_proc->api2_dequant_inter_matrix[0] =
    937                                         (WORD16 *)gi2_flat_scale_mat_32x32;
    938                         ps_proc->api2_dequant_inter_matrix[1] =
    939                                         (WORD16 *)gi2_inter_default_scale_mat_8x8;
    940                         ps_proc->api2_dequant_inter_matrix[2] =
    941                                         (WORD16 *)gi2_inter_default_scale_mat_16x16;
    942                         ps_proc->api2_dequant_inter_matrix[3] =
    943                                         (WORD16 *)gi2_inter_default_scale_mat_32x32;
    944                     }
    945                     /*TODO: Add support for custom scaling matrices */
    946                 }
    947 
    948 
    949                 /* CTB Level pointers */
    950                 ps_proc->pu1_cur_ctb_luma = ps_proc->pu1_cur_pic_luma
    951                                 + (ps_proc->i4_ctb_x * ctb_size
    952                                 + ps_proc->i4_ctb_y * ctb_size
    953                                 * ps_codec->i4_strd);
    954                 ps_proc->pu1_cur_ctb_chroma = ps_proc->pu1_cur_pic_chroma
    955                                 + ps_proc->i4_ctb_x * ctb_size
    956                                 + (ps_proc->i4_ctb_y * ctb_size * ps_codec->i4_strd / 2);
    957 
    958                 ihevcd_iquant_itrans_recon_ctb(ps_proc);
    959             }
    960 
    961             /* Per CTB update the following */
    962             {
    963                 WORD32 cur_ctb_idx = ps_proc->i4_ctb_x
    964                                 + ps_proc->i4_ctb_y * (ps_sps->i2_pic_wd_in_ctb);
    965                 cur_ctb_idx++;
    966 
    967                 ps_proc->pu1_pu_map += nctb * num_minpu_in_ctb;
    968                 ps_proc->ps_tu += ps_proc->i4_ctb_tu_cnt;
    969                 if((1 == ps_codec->i4_num_cores) &&
    970                                 (0 == cur_ctb_idx % RESET_TU_BUF_NCTB))
    971                 {
    972                     ps_proc->ps_tu = ps_proc->ps_pic_tu;
    973                 }
    974                 ps_proc->ps_pu += ps_proc->i4_ctb_pu_cnt;
    975             }
    976 
    977 
    978             /* Update proc map for recon*/
    979             ihevcd_proc_map_update(ps_proc, proc_type, nctb);
    980 
    981             num_ctb_tmp -= nctb;
    982             ihevcd_ctb_pos_update(ps_proc, nctb);
    983         }
    984 
    985         if(cur_slice_idx != ps_proc->i4_cur_slice_idx)
    986         {
    987             ps_proc->ps_slice_hdr = ps_codec->ps_slice_hdr_base + ((cur_slice_idx)&(MAX_SLICE_HDR_CNT - 1));
    988             ps_proc->i4_cur_slice_idx = cur_slice_idx;
    989         }
    990         /* Restore the saved variables  */
    991         num_ctb_tmp = num_ctb;
    992         ps_proc->i4_ctb_x -= num_ctb;
    993         ps_proc->i4_ctb_tile_x = cur_ctb_tile_x;
    994         ps_proc->i4_ctb_slice_x = cur_ctb_slice_x;
    995         ps_proc->i4_ctb_tile_y = cur_ctb_tile_y;
    996         ps_proc->i4_ctb_slice_y = cur_ctb_slice_y;
    997         pu1_pu_map_nxt = ps_proc->pu1_pu_map;
    998         ps_tu_nxt = ps_proc->ps_tu;
    999         ps_proc->pu1_pu_map = pu1_pu_map_cur;
   1000         ps_proc->ps_tu = ps_tu_cur;
   1001         proc_type = PROC_DEBLK;
   1002 
   1003         while(num_ctb_tmp)
   1004         {
   1005             slice_header_t *ps_slice_hdr = ps_proc->ps_slice_hdr;
   1006 
   1007             /* Check proc map to ensure dependencies for deblk are met */
   1008             ihevcd_proc_map_check(ps_proc, proc_type, nctb);
   1009 
   1010             ihevcd_slice_hdr_update(ps_proc);
   1011             ps_slice_hdr = ps_proc->ps_slice_hdr;
   1012 
   1013             if(((0 == FRAME_ILF_PAD || ps_codec->i4_num_cores != 1)) &&
   1014                (0 == ps_codec->i4_disable_deblk_pic))
   1015             {
   1016                 WORD32 i4_is_last_ctb_x = 0;
   1017                 WORD32 i4_is_last_ctb_y = 0;
   1018 
   1019                 if(0 == ps_slice_hdr->i1_slice_disable_deblocking_filter_flag ||
   1020                                 (ps_proc->i4_ctb_slice_x == 0) ||
   1021                                 (ps_proc->i4_ctb_slice_y == 0))
   1022                 {
   1023                     ps_proc->s_deblk_ctxt.ps_pps = ps_proc->ps_pps;
   1024                     ps_proc->s_deblk_ctxt.ps_sps = ps_proc->ps_sps;
   1025                     ps_proc->s_deblk_ctxt.ps_codec = ps_proc->ps_codec;
   1026                     ps_proc->s_deblk_ctxt.ps_slice_hdr = ps_proc->ps_slice_hdr;
   1027                     ps_proc->s_deblk_ctxt.i4_ctb_x = ps_proc->i4_ctb_x;
   1028                     ps_proc->s_deblk_ctxt.i4_ctb_y = ps_proc->i4_ctb_y;
   1029                     ps_proc->s_deblk_ctxt.pu1_slice_idx = ps_proc->pu1_slice_idx;
   1030                     ps_proc->s_deblk_ctxt.is_chroma_yuv420sp_vu = (ps_codec->e_ref_chroma_fmt == IV_YUV_420SP_VU);
   1031 
   1032                     /* Populating Current CTB's no_loop_filter flags */
   1033                     {
   1034                         WORD32 row;
   1035                         WORD32 log2_ctb_size = ps_sps->i1_log2_ctb_size;
   1036 
   1037                         /* Loop filter strd in units of num bits */
   1038                         WORD32 loop_filter_strd = ((ps_sps->i2_pic_width_in_luma_samples + 63) >> 6) << 3;
   1039                         /* Bit position is the current 8x8 bit offset wrt pic_no_loop_filter
   1040                          * bit_pos has to be a WOR32 so that when it is negative, the downshift still retains it to be a negative value */
   1041                         WORD32 bit_pos = ((ps_proc->i4_ctb_y << (log2_ctb_size - 3)) - 1) * loop_filter_strd + (ps_proc->i4_ctb_x << (log2_ctb_size - 3)) - 1;
   1042 
   1043                         for(row = 0; row < (ctb_size >> 3) + 1; row++)
   1044                         {
   1045                             /* Go to the corresponding byte - read 32 bits and downshift */
   1046                             ps_proc->s_deblk_ctxt.au2_ctb_no_loop_filter_flag[row] = (*(UWORD32 *)(ps_proc->pu1_pic_no_loop_filter_flag + (bit_pos >> 3))) >> (bit_pos & 7);
   1047                             bit_pos += loop_filter_strd;
   1048                         }
   1049                     }
   1050 
   1051                     ihevcd_deblk_ctb(&ps_proc->s_deblk_ctxt, i4_is_last_ctb_x, i4_is_last_ctb_y);
   1052 
   1053                     /* If the last CTB in the row was a complete CTB then deblocking has to be called from remaining pixels, since deblocking
   1054                      * is applied on a shifted CTB structure
   1055                      */
   1056                     if(ps_proc->i4_ctb_x == ps_sps->i2_pic_wd_in_ctb - 1)
   1057                     {
   1058                         WORD32 i4_is_last_ctb_x = 1;
   1059                         WORD32 i4_is_last_ctb_y = 0;
   1060 
   1061                         WORD32 last_x_pos;
   1062                         last_x_pos = (ps_sps->i2_pic_wd_in_ctb << ps_sps->i1_log2_ctb_size);
   1063                         if(last_x_pos  ==  ps_sps->i2_pic_width_in_luma_samples)
   1064                         {
   1065                             ihevcd_deblk_ctb(&ps_proc->s_deblk_ctxt, i4_is_last_ctb_x, i4_is_last_ctb_y);
   1066                         }
   1067                     }
   1068 
   1069 
   1070                     /* If the last CTB in the column was a complete CTB then deblocking has to be called from remaining pixels, since deblocking
   1071                      * is applied on a shifted CTB structure
   1072                      */
   1073                     if(ps_proc->i4_ctb_y == ps_sps->i2_pic_ht_in_ctb - 1)
   1074                     {
   1075                         WORD32 i4_is_last_ctb_x = 0;
   1076                         WORD32 i4_is_last_ctb_y = 1;
   1077                         WORD32 last_y_pos;
   1078                         last_y_pos = (ps_sps->i2_pic_ht_in_ctb << ps_sps->i1_log2_ctb_size);
   1079                         if(last_y_pos == ps_sps->i2_pic_height_in_luma_samples)
   1080                         {
   1081                             ihevcd_deblk_ctb(&ps_proc->s_deblk_ctxt, i4_is_last_ctb_x, i4_is_last_ctb_y);
   1082                         }
   1083                     }
   1084                 }
   1085             }
   1086 
   1087             /* Update proc map for deblk*/
   1088             ihevcd_proc_map_update(ps_proc, proc_type, nctb);
   1089 
   1090             num_ctb_tmp -= nctb;
   1091             ihevcd_ctb_pos_update(ps_proc, nctb);
   1092         }
   1093 
   1094         if(cur_slice_idx != ps_proc->i4_cur_slice_idx)
   1095         {
   1096             ps_proc->ps_slice_hdr = ps_codec->ps_slice_hdr_base + ((cur_slice_idx)&(MAX_SLICE_HDR_CNT - 1));
   1097             ps_proc->i4_cur_slice_idx = cur_slice_idx;
   1098         }
   1099         /* Restore the saved variables  */
   1100         num_ctb_tmp = num_ctb;
   1101         ps_proc->i4_ctb_x -= num_ctb;
   1102         ps_proc->i4_ctb_tile_x = cur_ctb_tile_x;
   1103         ps_proc->i4_ctb_tile_y = cur_ctb_tile_y;
   1104         ps_proc->pu1_pu_map = pu1_pu_map_cur;
   1105         ps_proc->ps_tu = ps_tu_cur;
   1106         nxt_ctb_slice_y = ps_proc->i4_ctb_slice_y;
   1107         nxt_ctb_slice_x = ps_proc->i4_ctb_slice_x;
   1108         ps_proc->i4_ctb_slice_y = cur_ctb_slice_y;
   1109         ps_proc->i4_ctb_slice_x = cur_ctb_slice_x;
   1110         proc_type = PROC_SAO;
   1111 
   1112         while(num_ctb_tmp)
   1113         {
   1114             slice_header_t *ps_slice_hdr = ps_proc->ps_slice_hdr;
   1115 
   1116             /* Check proc map to ensure dependencies for SAO are met */
   1117             ihevcd_proc_map_check(ps_proc, proc_type, nctb);
   1118 
   1119             ihevcd_slice_hdr_update(ps_proc);
   1120             ps_slice_hdr = ps_proc->ps_slice_hdr;
   1121 
   1122             if(0 == FRAME_ILF_PAD || ps_codec->i4_num_cores != 1)
   1123             {
   1124                 if((0 == ps_codec->i4_disable_sao_pic) &&
   1125                                 (ps_slice_hdr->i1_slice_sao_luma_flag || ps_slice_hdr->i1_slice_sao_chroma_flag))
   1126                 {
   1127                     ps_proc->s_sao_ctxt.ps_pps = ps_proc->ps_pps;
   1128                     ps_proc->s_sao_ctxt.ps_sps = ps_proc->ps_sps;
   1129                     ps_proc->s_sao_ctxt.ps_tile = ps_proc->ps_tile;
   1130                     ps_proc->s_sao_ctxt.ps_codec = ps_proc->ps_codec;
   1131                     ps_proc->s_sao_ctxt.ps_slice_hdr = ps_proc->ps_slice_hdr;
   1132                     ps_proc->s_sao_ctxt.i4_cur_slice_idx = ps_proc->i4_cur_slice_idx;
   1133 
   1134 
   1135 #if SAO_PROCESS_SHIFT_CTB
   1136                     ps_proc->s_sao_ctxt.i4_ctb_x = ps_proc->i4_ctb_x;
   1137                     ps_proc->s_sao_ctxt.i4_ctb_y = ps_proc->i4_ctb_y;
   1138                     ps_proc->s_sao_ctxt.is_chroma_yuv420sp_vu = (ps_codec->e_ref_chroma_fmt == IV_YUV_420SP_VU);
   1139 
   1140                     ihevcd_sao_shift_ctb(&ps_proc->s_sao_ctxt);
   1141 #else
   1142                     if(ps_proc->i4_ctb_x > 1 && ps_proc->i4_ctb_y > 0)
   1143                     {
   1144                         ps_proc->s_sao_ctxt.i4_ctb_x = ps_proc->i4_ctb_x - 2;
   1145                         ps_proc->s_sao_ctxt.i4_ctb_y = ps_proc->i4_ctb_y - 1;
   1146 
   1147                         ihevcd_sao_ctb(&ps_proc->s_sao_ctxt);
   1148                     }
   1149 
   1150                     if(ps_sps->i2_pic_wd_in_ctb - 1 == ps_proc->i4_ctb_x && ps_proc->i4_ctb_y > 0)
   1151                     {
   1152                         ps_proc->s_sao_ctxt.i4_ctb_x = ps_proc->i4_ctb_x - 1;
   1153                         ps_proc->s_sao_ctxt.i4_ctb_y = ps_proc->i4_ctb_y - 1;
   1154 
   1155                         ihevcd_sao_ctb(&ps_proc->s_sao_ctxt);
   1156 
   1157                         ps_proc->s_sao_ctxt.i4_ctb_x = ps_proc->i4_ctb_x;
   1158                         ps_proc->s_sao_ctxt.i4_ctb_y = ps_proc->i4_ctb_y - 1;
   1159 
   1160                         ihevcd_sao_ctb(&ps_proc->s_sao_ctxt);
   1161 
   1162                         if(ps_sps->i2_pic_ht_in_ctb - 1 == ps_proc->i4_ctb_y)
   1163                         {
   1164                             WORD32 i4_ctb_x;
   1165                             ps_proc->s_sao_ctxt.i4_ctb_y = ps_proc->i4_ctb_y;
   1166                             for(i4_ctb_x = 0; i4_ctb_x < ps_sps->i2_pic_wd_in_ctb; i4_ctb_x++)
   1167                             {
   1168                                 ps_proc->s_sao_ctxt.i4_ctb_x = i4_ctb_x;
   1169                                 ihevcd_sao_ctb(&ps_proc->s_sao_ctxt);
   1170                             }
   1171                         }
   1172                     }
   1173 #endif
   1174                 }
   1175 
   1176 
   1177                 /* Call padding if required */
   1178                 {
   1179 #if SAO_PROCESS_SHIFT_CTB
   1180 
   1181                     if(0 == ps_proc->i4_ctb_x)
   1182                     {
   1183                         WORD32 pad_ht_luma;
   1184                         WORD32 pad_ht_chroma;
   1185 
   1186                         ps_proc->pu1_cur_ctb_luma = ps_proc->pu1_cur_pic_luma
   1187                                         + (ps_proc->i4_ctb_x * ctb_size
   1188                                         + ps_proc->i4_ctb_y * ctb_size
   1189                                         * ps_codec->i4_strd);
   1190                         ps_proc->pu1_cur_ctb_chroma = ps_proc->pu1_cur_pic_chroma
   1191                                         + ps_proc->i4_ctb_x * ctb_size
   1192                                         + (ps_proc->i4_ctb_y * ctb_size * ps_codec->i4_strd / 2);
   1193 
   1194                         pad_ht_luma = ctb_size;
   1195                         pad_ht_luma += (ps_sps->i2_pic_ht_in_ctb - 1) == ps_proc->i4_ctb_y ? 8 : 0;
   1196                         pad_ht_chroma = ctb_size / 2;
   1197                         /* Pad left after 1st CTB is processed */
   1198                         ps_codec->s_func_selector.ihevc_pad_left_luma_fptr(ps_proc->pu1_cur_ctb_luma - 8 * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_luma, PAD_LEFT);
   1199                         ps_codec->s_func_selector.ihevc_pad_left_chroma_fptr(ps_proc->pu1_cur_ctb_chroma - 16 * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_chroma, PAD_LEFT);
   1200                     }
   1201 
   1202                     if((ps_sps->i2_pic_wd_in_ctb - 1) == ps_proc->i4_ctb_x)
   1203                     {
   1204                         WORD32 pad_ht_luma;
   1205                         WORD32 pad_ht_chroma;
   1206                         WORD32 cols_remaining = ps_sps->i2_pic_width_in_luma_samples - (ps_proc->i4_ctb_x << ps_sps->i1_log2_ctb_size);
   1207 
   1208                         ps_proc->pu1_cur_ctb_luma = ps_proc->pu1_cur_pic_luma
   1209                                         + (ps_proc->i4_ctb_x * ctb_size
   1210                                         + ps_proc->i4_ctb_y * ctb_size
   1211                                         * ps_codec->i4_strd);
   1212                         ps_proc->pu1_cur_ctb_chroma = ps_proc->pu1_cur_pic_chroma
   1213                                         + ps_proc->i4_ctb_x * ctb_size
   1214                                         + (ps_proc->i4_ctb_y * ctb_size * ps_codec->i4_strd / 2);
   1215 
   1216                         pad_ht_luma = ctb_size;
   1217                         pad_ht_chroma = ctb_size / 2;
   1218                         if((ps_sps->i2_pic_ht_in_ctb - 1) == ps_proc->i4_ctb_y)
   1219                         {
   1220                             pad_ht_luma += 8;
   1221                             pad_ht_chroma += 16;
   1222                             ps_codec->s_func_selector.ihevc_pad_left_chroma_fptr(ps_proc->pu1_cur_pic_chroma + (ps_sps->i2_pic_height_in_luma_samples / 2 - 16) * ps_codec->i4_strd,
   1223                                                                                  ps_codec->i4_strd, 16, PAD_LEFT);
   1224                         }
   1225                         /* Pad right after last CTB in the current row is processed */
   1226                         ps_codec->s_func_selector.ihevc_pad_right_luma_fptr(ps_proc->pu1_cur_ctb_luma + cols_remaining - 8 * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_luma, PAD_RIGHT);
   1227                         ps_codec->s_func_selector.ihevc_pad_right_chroma_fptr(ps_proc->pu1_cur_ctb_chroma + cols_remaining - 16 * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_chroma, PAD_RIGHT);
   1228 
   1229                         if((ps_sps->i2_pic_ht_in_ctb - 1) == ps_proc->i4_ctb_y)
   1230                         {
   1231                             UWORD8 *pu1_buf;
   1232                             /* Since SAO is shifted by 8x8, chroma padding can not be done till second row is processed */
   1233                             /* Hence moving top padding to to end of frame, Moving it to second row also results in problems when there is only one row */
   1234                             /* Pad top after padding left and right for current rows after processing 1st CTB row */
   1235                             ihevc_pad_top(ps_proc->pu1_cur_pic_luma - PAD_LEFT, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_TOP);
   1236                             ihevc_pad_top(ps_proc->pu1_cur_pic_chroma - PAD_LEFT, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_TOP / 2);
   1237 
   1238                             pu1_buf = ps_proc->pu1_cur_pic_luma + ps_codec->i4_strd * ps_sps->i2_pic_height_in_luma_samples - PAD_LEFT;
   1239                             /* Pad top after padding left and right for current rows after processing 1st CTB row */
   1240                             ihevc_pad_bottom(pu1_buf, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_BOT);
   1241 
   1242                             pu1_buf = ps_proc->pu1_cur_pic_chroma + ps_codec->i4_strd * (ps_sps->i2_pic_height_in_luma_samples / 2) - PAD_LEFT;
   1243                             ihevc_pad_bottom(pu1_buf, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_BOT / 2);
   1244                         }
   1245                     }
   1246 #else
   1247                     if(ps_proc->i4_ctb_y > 1)
   1248                     {
   1249                         if(0 == ps_proc->i4_ctb_x)
   1250                         {
   1251                             WORD32 pad_ht_luma;
   1252                             WORD32 pad_ht_chroma;
   1253 
   1254                             pad_ht_luma = ctb_size;
   1255                             pad_ht_chroma = ctb_size / 2;
   1256                             /* Pad left after 1st CTB is processed */
   1257                             ps_codec->s_func_selector.ihevc_pad_left_luma_fptr(ps_proc->pu1_cur_ctb_luma - 2 * ctb_size * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_luma, PAD_LEFT);
   1258                             ps_codec->s_func_selector.ihevc_pad_left_chroma_fptr(ps_proc->pu1_cur_ctb_chroma - ctb_size * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_chroma, PAD_LEFT);
   1259                         }
   1260                         else if((ps_sps->i2_pic_wd_in_ctb - 1) == ps_proc->i4_ctb_x)
   1261                         {
   1262                             WORD32 pad_ht_luma;
   1263                             WORD32 pad_ht_chroma;
   1264                             WORD32 cols_remaining = ps_sps->i2_pic_width_in_luma_samples - (ps_proc->i4_ctb_x << ps_sps->i1_log2_ctb_size);
   1265 
   1266                             pad_ht_luma = ((ps_sps->i2_pic_ht_in_ctb - 1) == ps_proc->i4_ctb_y) ? 3 * ctb_size : ctb_size;
   1267                             pad_ht_chroma = ((ps_sps->i2_pic_ht_in_ctb - 1) == ps_proc->i4_ctb_y) ? 3 * ctb_size / 2 : ctb_size / 2;
   1268                             /* Pad right after last CTB in the current row is processed */
   1269                             ps_codec->s_func_selector.ihevc_pad_right_luma_fptr(ps_proc->pu1_cur_ctb_luma + cols_remaining - 2 * ctb_size * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_luma, PAD_RIGHT);
   1270                             ps_codec->s_func_selector.ihevc_pad_right_chroma_fptr(ps_proc->pu1_cur_ctb_chroma + cols_remaining - ctb_size * ps_codec->i4_strd, ps_codec->i4_strd, pad_ht_chroma, PAD_RIGHT);
   1271 
   1272                             if((ps_sps->i2_pic_ht_in_ctb - 1) == ps_proc->i4_ctb_y)
   1273                             {
   1274                                 UWORD8 *pu1_buf;
   1275                                 WORD32 pad_ht_luma;
   1276                                 WORD32 pad_ht_chroma;
   1277 
   1278                                 pad_ht_luma = 2 * ctb_size;
   1279                                 pad_ht_chroma = ctb_size;
   1280 
   1281                                 ps_codec->s_func_selector.ihevc_pad_left_luma_fptr(ps_proc->pu1_cur_pic_luma + ps_codec->i4_strd * (ps_sps->i2_pic_height_in_luma_samples - 2 * ctb_size),
   1282                                                                                    ps_codec->i4_strd, pad_ht_luma, PAD_LEFT);
   1283                                 ps_codec->s_func_selector.ihevc_pad_left_chroma_fptr(ps_proc->pu1_cur_pic_chroma + ps_codec->i4_strd * (ps_sps->i2_pic_height_in_luma_samples / 2 - ctb_size),
   1284                                                                                      ps_codec->i4_strd, pad_ht_chroma, PAD_LEFT);
   1285 
   1286                                 /* Since SAO is shifted by 8x8, chroma padding can not be done till second row is processed */
   1287                                 /* Hence moving top padding to to end of frame, Moving it to second row also results in problems when there is only one row */
   1288                                 /* Pad top after padding left and right for current rows after processing 1st CTB row */
   1289                                 ihevc_pad_top(ps_proc->pu1_cur_pic_luma - PAD_LEFT, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_TOP);
   1290                                 ihevc_pad_top(ps_proc->pu1_cur_pic_chroma - PAD_LEFT, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_TOP / 2);
   1291 
   1292                                 pu1_buf = ps_proc->pu1_cur_pic_luma + ps_codec->i4_strd * ps_sps->i2_pic_height_in_luma_samples - PAD_LEFT;
   1293                                 /* Pad top after padding left and right for current rows after processing 1st CTB row */
   1294                                 ihevc_pad_bottom(pu1_buf, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_BOT);
   1295 
   1296                                 pu1_buf = ps_proc->pu1_cur_pic_chroma + ps_codec->i4_strd * (ps_sps->i2_pic_height_in_luma_samples / 2) - PAD_LEFT;
   1297                                 ihevc_pad_bottom(pu1_buf, ps_codec->i4_strd, ps_sps->i2_pic_width_in_luma_samples + PAD_WD, PAD_BOT / 2);
   1298                             }
   1299                         }
   1300                     }
   1301 #endif
   1302                 }
   1303             }
   1304 
   1305 
   1306             /* Update proc map for SAO*/
   1307             ihevcd_proc_map_update(ps_proc, proc_type, nctb);
   1308             /* Update proc map for Completion of CTB*/
   1309             ihevcd_proc_map_update(ps_proc, PROC_ALL, nctb);
   1310             {
   1311                 tile_t *ps_tile;
   1312 
   1313                 ps_tile = ps_proc->ps_tile;
   1314                 num_ctb_tmp -= nctb;
   1315 
   1316                 ps_proc->i4_ctb_tile_x += nctb;
   1317                 ps_proc->i4_ctb_x += nctb;
   1318 
   1319                 ps_proc->i4_ctb_slice_x += nctb;
   1320 
   1321 
   1322                 /* Update tile counters */
   1323                 if(ps_proc->i4_ctb_tile_x >= (ps_tile->u2_wd))
   1324                 {
   1325                     /*End of tile row*/
   1326                     ps_proc->i4_ctb_tile_x = 0;
   1327                     ps_proc->i4_ctb_x = ps_tile->u1_pos_x;
   1328 
   1329                     ps_proc->i4_ctb_tile_y++;
   1330                     ps_proc->i4_ctb_y++;
   1331                     if(ps_proc->i4_ctb_tile_y == ps_tile->u2_ht)
   1332                     {
   1333                         /* Reached End of Tile */
   1334                         ps_proc->i4_ctb_tile_y = 0;
   1335                         ps_proc->i4_ctb_tile_x = 0;
   1336                         ps_proc->ps_tile++;
   1337                         //End of picture
   1338                         if(!((ps_tile->u2_ht + ps_tile->u1_pos_y  ==  ps_sps->i2_pic_ht_in_ctb) && (ps_tile->u2_wd + ps_tile->u1_pos_x  ==  ps_sps->i2_pic_wd_in_ctb)))
   1339                         {
   1340                             ps_tile = ps_proc->ps_tile;
   1341                             ps_proc->i4_ctb_x = ps_tile->u1_pos_x;
   1342                             ps_proc->i4_ctb_y = ps_tile->u1_pos_y;
   1343 
   1344                         }
   1345                     }
   1346                 }
   1347             }
   1348         }
   1349 
   1350         ps_proc->i4_ctb_cnt -= num_ctb;
   1351     }
   1352     return ret;
   1353 }
   1354 
   1355 void ihevcd_init_proc_ctxt(process_ctxt_t *ps_proc, WORD32 tu_coeff_data_ofst)
   1356 {
   1357     codec_t *ps_codec;
   1358     slice_header_t *ps_slice_hdr;
   1359     pps_t *ps_pps;
   1360     sps_t *ps_sps;
   1361     tile_t *ps_tile, *ps_tile_prev;
   1362     WORD32 tile_idx;
   1363     WORD32 ctb_size;
   1364     WORD32 num_minpu_in_ctb;
   1365     WORD32 num_ctb_in_row;
   1366     WORD32 ctb_addr;
   1367     WORD32 i4_wd_in_ctb;
   1368     WORD32 tile_start_ctb_idx;
   1369     WORD32 slice_start_ctb_idx;
   1370     WORD32 check_tile_wd;
   1371     WORD32 continuous_tiles = 0; //Refers to tiles that are continuous, within a slice, horizontally
   1372 
   1373     ps_codec = ps_proc->ps_codec;
   1374 
   1375     ps_slice_hdr = ps_codec->ps_slice_hdr_base + ((ps_proc->i4_cur_slice_idx) & (MAX_SLICE_HDR_CNT - 1));
   1376     ps_proc->ps_slice_hdr = ps_slice_hdr;
   1377     ps_proc->ps_pps = ps_codec->ps_pps_base + ps_slice_hdr->i1_pps_id;
   1378     ps_pps = ps_proc->ps_pps;
   1379     ps_proc->ps_sps = ps_codec->ps_sps_base + ps_pps->i1_sps_id;
   1380     ps_sps = ps_proc->ps_sps;
   1381     ps_proc->i4_init_done = 1;
   1382     ctb_size = 1 << ps_sps->i1_log2_ctb_size;
   1383     num_minpu_in_ctb = (ctb_size / MIN_PU_SIZE) * (ctb_size / MIN_PU_SIZE);
   1384     num_ctb_in_row = ps_sps->i2_pic_wd_in_ctb;
   1385 
   1386     ps_proc->s_sao_ctxt.pu1_slice_idx = ps_proc->pu1_slice_idx;
   1387 
   1388     ihevcd_get_tile_pos(ps_pps, ps_sps, ps_proc->i4_ctb_x, ps_proc->i4_ctb_y,
   1389                         &ps_proc->i4_ctb_tile_x, &ps_proc->i4_ctb_tile_y,
   1390                         &tile_idx);
   1391 
   1392     ps_proc->ps_tile = ps_pps->ps_tile + tile_idx;
   1393     ps_proc->i4_cur_tile_idx = tile_idx;
   1394     ps_tile = ps_proc->ps_tile;
   1395 
   1396     if(ps_pps->i1_tiles_enabled_flag)
   1397     {
   1398         if(tile_idx)
   1399             ps_tile_prev = ps_tile - 1;
   1400         else
   1401             ps_tile_prev = ps_tile;
   1402 
   1403         slice_start_ctb_idx = ps_slice_hdr->i2_ctb_x + (ps_slice_hdr->i2_ctb_y * ps_sps->i2_pic_wd_in_ctb);
   1404         tile_start_ctb_idx = ps_tile->u1_pos_x + (ps_tile->u1_pos_y * ps_sps->i2_pic_wd_in_ctb);
   1405 
   1406         /*Check if
   1407          * 1. Last tile that ends in frame boundary and 1st tile in next row belongs to same slice
   1408          * 1.1. If it does, check if the slice that has these tiles spans across the frame row.
   1409          * 2. Vertical tiles are present within a slice */
   1410         if(((ps_slice_hdr->i2_ctb_x == ps_tile->u1_pos_x) && (ps_slice_hdr->i2_ctb_y != ps_tile->u1_pos_y)))
   1411         {
   1412             continuous_tiles = 1;
   1413         }
   1414         else
   1415         {
   1416             check_tile_wd = ps_slice_hdr->i2_ctb_x + ps_tile_prev->u2_wd;
   1417             if(!(((check_tile_wd >= ps_sps->i2_pic_wd_in_ctb) && (check_tile_wd % ps_sps->i2_pic_wd_in_ctb == ps_tile->u1_pos_x))
   1418                                             || ((ps_slice_hdr->i2_ctb_x == ps_tile->u1_pos_x))))
   1419             {
   1420                 continuous_tiles = 1;
   1421             }
   1422         }
   1423 
   1424         {
   1425             WORD32 i2_independent_ctb_x = ps_slice_hdr->i2_independent_ctb_x;
   1426             WORD32 i2_independent_ctb_y = ps_slice_hdr->i2_independent_ctb_y;
   1427 
   1428             /* Handles cases where
   1429              * 1. Slices begin at the start of each tile
   1430              * 2. Tiles lie in the same slice row.i.e, starting tile_x > slice_x, but tile_y == slice_y
   1431              * */
   1432             if(ps_proc->i4_ctb_x >= i2_independent_ctb_x)
   1433             {
   1434                 ps_proc->i4_ctb_slice_x = ps_proc->i4_ctb_x - i2_independent_ctb_x;
   1435             }
   1436             else
   1437             {
   1438                 /* Indicates multiple tiles in a slice case where
   1439                  * The new tile belongs to an older slice that started in the previous rows-not the present row
   1440                  * & (tile_y > slice_y and tile_x < slice_x)
   1441                  */
   1442                 if((slice_start_ctb_idx < tile_start_ctb_idx) && (continuous_tiles))
   1443                 {
   1444                     i4_wd_in_ctb = ps_sps->i2_pic_wd_in_ctb;
   1445                 }
   1446                 /* Indicates many-tiles-in-one-slice case, for slices that end without spanning the frame width*/
   1447                 else
   1448                 {
   1449                     i4_wd_in_ctb = ps_tile->u2_wd;
   1450                 }
   1451 
   1452                 if(continuous_tiles)
   1453                 {
   1454                     ps_proc->i4_ctb_slice_x = i4_wd_in_ctb
   1455                                     - (i2_independent_ctb_x - ps_proc->i4_ctb_x);
   1456                 }
   1457                 else
   1458                 {
   1459                     ps_proc->i4_ctb_slice_x = ps_proc->i4_ctb_x - ps_tile->u1_pos_x;
   1460                 }
   1461             }
   1462             /* Initialize ctb slice y to zero and at the start of slice row initialize it
   1463         to difference between ctb_y and slice's start ctb y */
   1464 
   1465             ps_proc->i4_ctb_slice_y = ps_proc->i4_ctb_y - i2_independent_ctb_y;
   1466 
   1467             /*If beginning of tile, check if slice counters are set correctly*/
   1468             if((0 == ps_proc->i4_ctb_tile_x) && (0 == ps_proc->i4_ctb_tile_y))
   1469             {
   1470                 if(ps_slice_hdr->i1_dependent_slice_flag)
   1471                 {
   1472                     ps_proc->i4_ctb_slice_x = 0;
   1473                     ps_proc->i4_ctb_slice_y = 0;
   1474                 }
   1475                 /*For slices that span across multiple tiles*/
   1476                 else if(slice_start_ctb_idx < tile_start_ctb_idx)
   1477                 {
   1478                     ps_proc->i4_ctb_slice_y = ps_tile->u1_pos_y - i2_independent_ctb_y;
   1479                     /* Two Cases
   1480                      * 1 - slice spans across frame-width- but dose not start from 1st column
   1481                      * 2 - Slice spans across multiple tiles anywhere is a frame
   1482                      */
   1483                     /*TODO:In a multiple slice clip,  if an independent slice span across more than 2 tiles in a row, it is not supported*/
   1484                     if(continuous_tiles) //Case 2-implemented for slices that span not more than 2 tiles
   1485                     {
   1486                         if(i2_independent_ctb_y <= ps_tile->u1_pos_y)
   1487                         {
   1488                             //Check if ctb x is before or after
   1489                             if(i2_independent_ctb_x > ps_tile->u1_pos_x)
   1490                             {
   1491                                 ps_proc->i4_ctb_slice_y -= 1;
   1492                             }
   1493                         }
   1494                     }
   1495                 }
   1496             }
   1497             //Slice starts from a column which is not the starting tile-column, but is within the tile
   1498             if(((i2_independent_ctb_x - ps_tile->u1_pos_x) != 0) && ((ps_proc->i4_ctb_slice_y != 0))
   1499                             && ((i2_independent_ctb_x >= ps_tile->u1_pos_x) && (i2_independent_ctb_x < ps_tile->u1_pos_x + ps_tile->u2_wd)))
   1500             {
   1501                 ps_proc->i4_ctb_slice_y -= 1;
   1502             }
   1503         }
   1504     }
   1505     else
   1506     {
   1507         WORD32 i2_independent_ctb_x = ps_slice_hdr->i2_independent_ctb_x;
   1508         WORD32 i2_independent_ctb_y = ps_slice_hdr->i2_independent_ctb_y;
   1509 
   1510 
   1511         {
   1512             ps_proc->i4_ctb_slice_x = ps_proc->i4_ctb_x - i2_independent_ctb_x;
   1513             ps_proc->i4_ctb_slice_y = ps_proc->i4_ctb_y - i2_independent_ctb_y;
   1514             if(ps_proc->i4_ctb_slice_x < 0)
   1515             {
   1516                 ps_proc->i4_ctb_slice_x += ps_sps->i2_pic_wd_in_ctb;
   1517                 ps_proc->i4_ctb_slice_y -= 1;
   1518             }
   1519 
   1520             /* Initialize ctb slice y to zero and at the start of slice row initialize it
   1521             to difference between ctb_y and slice's start ctb y */
   1522         }
   1523     }
   1524 
   1525     /* Compute TU offset for the current CTB set */
   1526     {
   1527 
   1528         WORD32 ctb_luma_min_tu_cnt;
   1529         WORD32 ctb_addr;
   1530 
   1531         ctb_addr = ps_proc->i4_ctb_y * num_ctb_in_row + ps_proc->i4_ctb_x;
   1532 
   1533         ctb_luma_min_tu_cnt = (1 << ps_sps->i1_log2_ctb_size) / MIN_TU_SIZE;
   1534         ctb_luma_min_tu_cnt *= ctb_luma_min_tu_cnt;
   1535 
   1536         ps_proc->pu1_tu_map = ps_proc->pu1_pic_tu_map
   1537                         + ctb_luma_min_tu_cnt * ctb_addr;
   1538         if(1 == ps_codec->i4_num_cores)
   1539         {
   1540             ps_proc->ps_tu = ps_proc->ps_pic_tu + ps_proc->pu4_pic_tu_idx[ctb_addr % RESET_TU_BUF_NCTB];
   1541         }
   1542         else
   1543         {
   1544             ps_proc->ps_tu = ps_proc->ps_pic_tu + ps_proc->pu4_pic_tu_idx[ctb_addr];
   1545         }
   1546         ps_proc->pv_tu_coeff_data = (UWORD8 *)ps_proc->pv_pic_tu_coeff_data
   1547                         + tu_coeff_data_ofst;
   1548 
   1549     }
   1550 
   1551     /* Compute PU related elements for the current CTB set */
   1552     {
   1553         WORD32 pu_idx;
   1554         ctb_addr = ps_proc->i4_ctb_y * num_ctb_in_row + ps_proc->i4_ctb_x;
   1555         pu_idx = ps_proc->pu4_pic_pu_idx[ctb_addr];
   1556         ps_proc->pu1_pu_map = ps_proc->pu1_pic_pu_map
   1557                         + ctb_addr * num_minpu_in_ctb;
   1558         ps_proc->ps_pu = ps_proc->ps_pic_pu + pu_idx;
   1559     }
   1560 
   1561     /* Number of ctbs processed in one loop of process function */
   1562     {
   1563         ps_proc->i4_nctb = MIN(ps_codec->u4_nctb, ps_tile->u2_wd);
   1564     }
   1565 
   1566 }
   1567 void ihevcd_process_thread(process_ctxt_t *ps_proc)
   1568 {
   1569     {
   1570         ithread_set_affinity(ps_proc->i4_id + 1);
   1571     }
   1572     while(1)
   1573     {
   1574         IHEVCD_ERROR_T ret;
   1575         proc_job_t s_job;
   1576 
   1577         ret = ihevcd_jobq_dequeue((jobq_t *)ps_proc->pv_proc_jobq, &s_job,
   1578                                   sizeof(proc_job_t), 1);
   1579         if((IHEVCD_ERROR_T)IHEVCD_SUCCESS != ret)
   1580             break;
   1581 
   1582         ps_proc->i4_ctb_cnt = s_job.i2_ctb_cnt;
   1583         ps_proc->i4_ctb_x = s_job.i2_ctb_x;
   1584         ps_proc->i4_ctb_y = s_job.i2_ctb_y;
   1585         ps_proc->i4_cur_slice_idx = s_job.i2_slice_idx;
   1586 
   1587 
   1588 
   1589         if(CMD_PROCESS == s_job.i4_cmd)
   1590         {
   1591             ihevcd_init_proc_ctxt(ps_proc, s_job.i4_tu_coeff_data_ofst);
   1592             ihevcd_process(ps_proc);
   1593         }
   1594         else if(CMD_FMTCONV == s_job.i4_cmd)
   1595         {
   1596             sps_t *ps_sps;
   1597             codec_t *ps_codec;
   1598             ivd_out_bufdesc_t *ps_out_buffer;
   1599             WORD32 num_rows;
   1600 
   1601             if(0 == ps_proc->i4_init_done)
   1602             {
   1603                 ihevcd_init_proc_ctxt(ps_proc, 0);
   1604             }
   1605             ps_sps = ps_proc->ps_sps;
   1606             ps_codec = ps_proc->ps_codec;
   1607             ps_out_buffer = ps_proc->ps_out_buffer;
   1608             num_rows = 1 << ps_sps->i1_log2_ctb_size;
   1609 
   1610             num_rows = MIN(num_rows, (ps_codec->i4_disp_ht - (s_job.i2_ctb_y << ps_sps->i1_log2_ctb_size)));
   1611 
   1612             if(num_rows < 0)
   1613                 num_rows = 0;
   1614 
   1615             ihevcd_fmt_conv(ps_proc->ps_codec, ps_proc, ps_out_buffer->pu1_bufs[0], ps_out_buffer->pu1_bufs[1], ps_out_buffer->pu1_bufs[2],
   1616                             s_job.i2_ctb_y << ps_sps->i1_log2_ctb_size, num_rows);
   1617         }
   1618     }
   1619     //ithread_exit(0);
   1620     return;
   1621 }
   1622 
   1623