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_bslice.c
23 *
24 * \brief
25 * Contains routines that decode B 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_structs.h"
41 #include "ih264d_bitstrm.h"
42 #include "ih264d_parse_cavlc.h"
43 #include "ih264d_mb_utils.h"
44 #include "ih264d_mvpred.h"
45 #include "ih264d_inter_pred.h"
46 #include "ih264d_process_pslice.h"
47 #include "ih264d_error_handler.h"
48 #include "ih264d_tables.h"
49 #include "ih264d_parse_slice.h"
50 #include "ih264d_process_pslice.h"
51 #include "ih264d_process_bslice.h"
52 #include "ih264d_tables.h"
53 #include "ih264d_parse_islice.h"
54 #include "ih264d_mvpred.h"
55
56 void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t * ps_dec);
57 //UWORD32 g_hits = 0;
58 //UWORD32 g_miss = 0;
59 /*!
60 **************************************************************************
61 * \if Function name : ih264d_decode_spatial_direct \endif
62 *
63 * \brief
64 * Decodes spatial direct mode.
65 *
66 * \return
67 * None.
68 * Arunoday T
69 **************************************************************************
70 */
ih264d_decode_spatial_direct(dec_struct_t * ps_dec,UWORD8 u1_wd_x,dec_mb_info_t * ps_cur_mb_info,UWORD8 u1_mb_num)71 WORD32 ih264d_decode_spatial_direct(dec_struct_t * ps_dec,
72 UWORD8 u1_wd_x,
73 dec_mb_info_t * ps_cur_mb_info,
74 UWORD8 u1_mb_num)
75 {
76 mv_pred_t s_mv_pred, *ps_mv;
77 UWORD8 u1_col_zero_flag, u1_sub_mb_num, u1_direct_zero_pred_flag = 0;
78 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
79 mv_pred_t *ps_mv_ntop_start;
80 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_mb_num << 4);
81 UWORD8 partition_size, sub_partition, u1_mb_partw, u1_mb_parth;
82 UWORD8 i;
83 WORD8 i1_pred, i1_ref_frame0, i1_ref_frame1;
84 struct pic_buffer_t *ps_ref_frame = NULL, *ps_col_pic, *ps_pic_buff0 = NULL,
85 *ps_pic_buff1 = NULL;
86
87 UWORD8 u1_zero_pred_cond_f, u1_zero_pred_cond_b;
88 WORD16 i2_def_mv[2], i2_spat_pred_mv[4], *pi2_final_mv0, *pi2_final_mv1;
89 UWORD16 ui2_mask_fwd = 0, ui2_mask_bwd = 0, u2_mask = 0;
90 UWORD32 *pui32_weight_ofsts = NULL;
91 directmv_t s_mvdirect;
92 UWORD8 u1_colz;
93 UWORD8 u1_final_ref_idx = 0;
94 const UWORD8 *pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth;
95 const UWORD8 *pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw;
96 const UWORD16 sub_mask_table[] =
97 { 0x33, 0x3, 0x11, 0x1 };
98 const UWORD16 mask_table[] =
99 { 0xffff, /*16x16 NA */
100 0xff, /* 16x8*/
101 0x3333, /* 8x16*/
102 0x33 };/* 8x8*/
103 mv_pred_t s_temp_mv_pred;
104 WORD32 ret = 0;
105
106 /* CHANGED CODE */
107 ps_mv_ntop_start = ps_dec->ps_mv_cur + (u1_mb_num << 4)
108 - (ps_dec->u2_frm_wd_in_mbs << (4 + u1_mbaff)) + 12;
109
110 /* assign default values for MotionVector as zero */
111 i2_def_mv[0] = 0;
112 i2_def_mv[1] = 0;
113
114 u1_direct_zero_pred_flag = ps_dec->pf_mvpred(ps_dec, ps_cur_mb_info, ps_mv_nmb_start,
115 ps_mv_ntop_start, &s_mv_pred, 0, 4,
116 0, 1, B_DIRECT_SPATIAL);
117
118 i2_spat_pred_mv[0] = s_mv_pred.i2_mv[0];
119 i2_spat_pred_mv[1] = s_mv_pred.i2_mv[1];
120 i2_spat_pred_mv[2] = s_mv_pred.i2_mv[2];
121 i2_spat_pred_mv[3] = s_mv_pred.i2_mv[3];
122
123 i1_ref_frame0 = s_mv_pred.i1_ref_frame[0];
124 i1_ref_frame1 = s_mv_pred.i1_ref_frame[1];
125
126 i1_ref_frame0 = (i1_ref_frame0 < 0) ? -1 : i1_ref_frame0;
127 i1_ref_frame1 = (i1_ref_frame1 < 0) ? -1 : i1_ref_frame1;
128
129 i1_pred = 0;
130
131 {
132 WORD8 u1_ref_idx, u1_ref_idx1;
133 UWORD32 uc_Idx, uc_Idx1;
134 UWORD8 u1_scale_ref = (ps_dec->ps_cur_slice->u1_mbaff_frame_flag
135 && ps_cur_mb_info->u1_mb_field_decodingflag);
136 u1_final_ref_idx = i1_ref_frame0;
137 if(i1_ref_frame0 >= 0)
138 {
139 /* convert RefIdx if it is MbAff */
140 u1_ref_idx = i1_ref_frame0;
141 u1_ref_idx1 = i1_ref_frame0;
142 if(u1_scale_ref)
143 {
144 u1_ref_idx1 = u1_ref_idx >> 1;
145 if((u1_ref_idx & 0x01) != (1 - ps_cur_mb_info->u1_topmb))
146 u1_ref_idx1 += MAX_REF_BUFS;
147 }
148 /* If i1_ref_frame0 < 0 then refIdxCol is obtained from ps_pic_buff1 */
149 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][u1_ref_idx1];
150 ps_ref_frame = ps_pic_buff0;
151 i1_pred = PRED_L0;
152 }
153
154 if(i1_ref_frame1 >= 0)
155 {
156 /* convert RefIdx if it is MbAff */
157 u1_ref_idx = i1_ref_frame1;
158 u1_ref_idx1 = i1_ref_frame1;
159 if(u1_scale_ref)
160 {
161 u1_ref_idx1 = u1_ref_idx >> 1;
162 if((u1_ref_idx & 0x01) != (1 - ps_cur_mb_info->u1_topmb))
163 u1_ref_idx1 += MAX_REF_BUFS;
164 }
165 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][u1_ref_idx1];
166 i1_pred = i1_pred | PRED_L1;
167 }
168 if(i1_ref_frame0 < 0)
169 {
170 ps_ref_frame = ps_pic_buff1;
171 u1_final_ref_idx = i1_ref_frame1;
172 }
173
174 u1_zero_pred_cond_f = (u1_direct_zero_pred_flag) || (i1_ref_frame0 < 0);
175 u1_zero_pred_cond_b = (u1_direct_zero_pred_flag) || (i1_ref_frame1 < 0);
176
177 if(ps_dec->ps_cur_pps->u1_wted_bipred_idc)
178 {
179 uc_Idx = ((i1_ref_frame0 < 1) ? 0 : i1_ref_frame0)
180 * ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
181 if(u1_scale_ref)
182 uc_Idx >>= 1;
183 uc_Idx1 = (i1_ref_frame1 < 0) ? 0 : i1_ref_frame1;
184 uc_Idx += (u1_scale_ref) ? (uc_Idx1 >> 1) : uc_Idx1;
185 pui32_weight_ofsts =
186 (UWORD32*)&ps_dec->pu4_wt_ofsts[2 * X3(uc_Idx)];
187
188 if(i1_ref_frame0 < 0)
189 pui32_weight_ofsts += 1;
190
191 if(u1_scale_ref && (ps_dec->ps_cur_pps->u1_wted_bipred_idc == 2))
192 {
193 WORD16 i2_ref_idx;
194 i2_ref_idx = MAX(i1_ref_frame0, 0);
195 i2_ref_idx *= (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]
196 << 1);
197 i2_ref_idx += MAX(i1_ref_frame1, 0);
198 if(!ps_cur_mb_info->u1_topmb)
199 i2_ref_idx +=
200 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]
201 << 1)
202 * (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]
203 << 1);
204 pui32_weight_ofsts = (UWORD32*)&ps_dec->pu4_mbaff_wt_mat[2
205 * X3(i2_ref_idx)];
206 }
207 }
208 }
209
210 s_temp_mv_pred.i1_ref_frame[0] = i1_ref_frame0;
211 s_temp_mv_pred.i1_ref_frame[1] = i1_ref_frame1;
212 s_temp_mv_pred.u1_col_ref_pic_idx = ps_ref_frame->u1_mv_buf_id;
213 s_temp_mv_pred.u1_pic_type = ps_ref_frame->u1_pic_type;
214
215 /**********************************************************************/
216 /* Call the function which gets the number of partitions and */
217 /* partition info of colocated Mb */
218 /**********************************************************************/
219
220 ps_dec->pf_parse_mvdirect(ps_dec, ps_dec->ps_col_pic, &s_mvdirect, u1_wd_x,
221 ps_dec->i4_submb_ofst, ps_cur_mb_info);
222 ps_col_pic = ps_dec->ps_col_pic;
223 if((s_mvdirect.u1_col_zeroflag_change == 0) || u1_direct_zero_pred_flag)
224 {
225 WORD16 i2_mv_x, i2_mv_y, i2_mvX1, i2_mvY1;
226 /* Most probable case */
227 u1_col_zero_flag = *(ps_col_pic->pu1_col_zero_flag
228 + s_mvdirect.i4_mv_indices[0]);
229 u1_col_zero_flag = u1_col_zero_flag & 0x01;
230
231 if(u1_zero_pred_cond_f || ((i1_ref_frame0 == 0) && (u1_col_zero_flag == 1)))
232 {
233 i2_mv_x = 0;
234 i2_mv_y = 0;
235 }
236 else
237 {
238 i2_mv_x = i2_spat_pred_mv[0];
239 i2_mv_y = i2_spat_pred_mv[1];
240
241 }
242
243 if(u1_zero_pred_cond_b || ((i1_ref_frame1 == 0) && (u1_col_zero_flag == 1)))
244 {
245 i2_mvX1 = 0;
246 i2_mvY1 = 0;
247 }
248 else
249 {
250 i2_mvX1 = i2_spat_pred_mv[2];
251 i2_mvY1 = i2_spat_pred_mv[3];
252 }
253
254 u1_sub_mb_num = ps_dec->u1_sub_mb_num;
255 u1_mb_partw = (u1_wd_x >> 2);
256
257
258 if(i1_ref_frame0 >= 0)
259 {
260 {
261 pred_info_pkd_t *ps_pred_pkd;
262 WORD16 i2_mv[2];
263 WORD8 i1_ref_idx= 0;
264
265 i2_mv[0] = i2_mv_x;
266 i2_mv[1] = i2_mv_y;
267
268 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
269 ih264d_fill_pred_info(i2_mv,u1_mb_partw,u1_mb_partw,u1_sub_mb_num,i1_pred,
270 ps_pred_pkd,ps_pic_buff0->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
271 ps_pic_buff0->u1_pic_type);
272 ps_dec->u4_pred_info_pkd_idx++;
273 ps_cur_mb_info->u1_num_pred_parts++;
274
275
276 }
277
278 }
279
280 if(i1_ref_frame1 >= 0)
281 {
282 {
283 pred_info_pkd_t *ps_pred_pkd;
284 WORD16 i2_mv[2];
285 WORD8 i1_ref_idx= 0;
286
287 i2_mv[0] = i2_mvX1;
288 i2_mv[1] = i2_mvY1;
289
290 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
291 ih264d_fill_pred_info(i2_mv,u1_mb_partw,u1_mb_partw,u1_sub_mb_num,i1_pred,
292 ps_pred_pkd,ps_pic_buff1->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
293 ps_pic_buff1->u1_pic_type);
294 ps_dec->u4_pred_info_pkd_idx++;
295 ps_cur_mb_info->u1_num_pred_parts++;
296
297
298 }
299 }
300
301
302 /* Replication optimisation */
303 s_temp_mv_pred.i2_mv[0] = i2_mv_x;
304 s_temp_mv_pred.i2_mv[1] = i2_mv_y;
305 s_temp_mv_pred.i2_mv[2] = i2_mvX1;
306 s_temp_mv_pred.i2_mv[3] = i2_mvY1;
307
308 /* Calculating colocated zero information */
309 {
310 /*************************************/
311 /* If(bit2 and bit3 set) */
312 /* then */
313 /* (bit0 and bit1) => submmbmode */
314 /* (bit2 and bit3) => mbmode */
315 /* else */
316 /* (bit0 and bit1) => mbmode */
317 /*************************************/
318 /*UWORD8 u1_packed_mb_sub_mb_mode = sub_partition ?
319 (s_mvdirect.i1_partitionsize[0]) : ((s_mvdirect.i1_partitionsize[0]) << 2);*/
320 UWORD8 u1_packed_mb_sub_mb_mode = (u1_mb_partw == 2) ? 0x03 : 0;
321
322 if(i1_ref_frame0 < 0)
323 {
324 i2_mv_x = i2_mvX1;
325 i2_mv_y = i2_mvY1;
326 }
327
328 /* Change from left shift 4 to 6 - Varun */
329 u1_colz = (ps_cur_mb_info->u1_mb_field_decodingflag << 1)
330 | ((u1_final_ref_idx == 0) && (ABS(i2_mv_x) <= 1)
331 && (ABS(i2_mv_y) <= 1));
332 u1_colz |= (u1_packed_mb_sub_mb_mode << 6);
333 }
334 ps_mv = ps_mv_nmb_start + u1_sub_mb_num;
335 ih264d_rep_mv_colz(ps_dec, &s_temp_mv_pred, ps_mv, u1_sub_mb_num, u1_colz,
336 u1_mb_partw, u1_mb_partw);
337 if(u1_wd_x == MB_SIZE)
338 ps_dec->u1_currB_type = 0;
339
340
341
342 return OK;
343 }
344 /***************************************************************************/
345 /* If present MB is 16x16 and the partition of colocated Mb is >= PRED_8x8 */
346 /* i.e 8x8 or less than 8x8 partitions then set up DMA for (0,0) and */
347 /* spatially predicted motion vector and do the multiplexing after */
348 /* motion compensation */
349 /***************************************************************************/
350
351
352 if((u1_wd_x == MB_SIZE) && (s_mvdirect.i1_num_partitions > 2))
353 {
354 ps_cur_mb_info->u1_Mux = 1;
355 if(i1_ref_frame0 >= 0)
356 {
357
358 {
359 pred_info_pkd_t *ps_pred_pkd;
360 WORD8 i1_ref_idx= 0;
361
362 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
363 ih264d_fill_pred_info(&(i2_spat_pred_mv[0]),4,4,0,i1_pred,
364 ps_pred_pkd,ps_pic_buff0->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
365 ps_pic_buff0->u1_pic_type);
366 ps_dec->u4_pred_info_pkd_idx++;
367 ps_cur_mb_info->u1_num_pred_parts++;
368
369
370 }
371
372 /****** (0,0) Motion vectors DMA *****/
373 {
374 pred_info_pkd_t *ps_pred_pkd;
375 WORD16 i2_mv[2];
376 WORD8 i1_ref_idx= 0;
377
378 i2_mv[0] = 0;
379 i2_mv[1] = 0;
380
381 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
382 ih264d_fill_pred_info(i2_mv,4,4,0,i1_pred,
383 ps_pred_pkd,ps_pic_buff0->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
384 ps_pic_buff0->u1_pic_type);
385 ps_dec->u4_pred_info_pkd_idx++;
386 ps_cur_mb_info->u1_num_pred_parts++;
387
388
389 }
390 }
391 if(i1_ref_frame1 >= 0)
392 {
393 {
394 pred_info_pkd_t *ps_pred_pkd;
395 WORD16 i2_mv[2];
396 WORD8 i1_ref_idx= 0;
397
398 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
399 ih264d_fill_pred_info(&(i2_spat_pred_mv[2]),4,4,0,i1_pred,
400 ps_pred_pkd,ps_pic_buff1->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
401 ps_pic_buff1->u1_pic_type);
402 ps_dec->u4_pred_info_pkd_idx++;
403 ps_cur_mb_info->u1_num_pred_parts++;
404
405
406 }
407
408 /****** (0,0) Motion vectors DMA *****/
409
410 {
411 pred_info_pkd_t *ps_pred_pkd;
412 WORD16 i2_mv[2];
413 WORD8 i1_ref_idx= 0;
414
415 i2_mv[0] = 0;
416 i2_mv[1] = 0;
417
418 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
419 ih264d_fill_pred_info(i2_mv,4,4,0,i1_pred,
420 ps_pred_pkd,ps_pic_buff1->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
421 ps_pic_buff1->u1_pic_type);
422 ps_dec->u4_pred_info_pkd_idx++;
423 ps_cur_mb_info->u1_num_pred_parts++;
424
425
426 }
427 }
428 }
429
430 /*u1_col = *(ps_col_pic->pu1_col_zero_flag + s_mvdirect.i4_mv_indices[0]);
431 u1_col &= 1;
432 u1_init = 0;*/
433
434 for(i = 0; i < s_mvdirect.i1_num_partitions; i++)
435 {
436 partition_size = s_mvdirect.i1_partitionsize[i];
437 u1_sub_mb_num = s_mvdirect.i1_submb_num[i];
438
439 sub_partition = partition_size >> 2;
440 partition_size &= 0x3;
441 u1_mb_partw = pu1_mb_partw[partition_size];
442 u1_mb_parth = pu1_mb_parth[partition_size];
443 u2_mask = mask_table[partition_size];
444 if(sub_partition != 0)
445 {
446 u1_mb_partw >>= 1;
447 u1_mb_parth >>= 1;
448 u2_mask = sub_mask_table[partition_size];
449 }
450
451 u1_col_zero_flag = *(ps_col_pic->pu1_col_zero_flag
452 + s_mvdirect.i4_mv_indices[i]);
453 u1_col_zero_flag = u1_col_zero_flag & 0x01;
454
455 /*if(u1_col != u1_col_zero_flag)
456 u1_init = 1;*/
457
458 if(u1_zero_pred_cond_f || ((i1_ref_frame0 == 0) && (u1_col_zero_flag == 1)))
459 {
460 pi2_final_mv0 = &i2_def_mv[0];
461 ui2_mask_fwd |= (u2_mask << u1_sub_mb_num);
462 }
463 else
464 pi2_final_mv0 = &i2_spat_pred_mv[0];
465
466 if(u1_zero_pred_cond_b || ((i1_ref_frame1 == 0) && (u1_col_zero_flag == 1)))
467 {
468 pi2_final_mv1 = &i2_def_mv[0];
469 ui2_mask_bwd |= (u2_mask << u1_sub_mb_num);
470 }
471 else
472 pi2_final_mv1 = &i2_spat_pred_mv[2];
473
474 if(ps_cur_mb_info->u1_Mux != 1)
475 {
476 /*u1_sub_mb_x = u1_sub_mb_num & 0x03;
477 uc_sub_mb_y = (u1_sub_mb_num >> 2);*/
478 if(i1_ref_frame0 >= 0)
479 {
480
481 {
482 pred_info_pkd_t *ps_pred_pkd;
483 WORD8 i1_ref_idx= 0;
484
485 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
486 ih264d_fill_pred_info(pi2_final_mv0,u1_mb_partw,u1_mb_parth,u1_sub_mb_num,i1_pred,
487 ps_pred_pkd,ps_pic_buff0->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
488 ps_pic_buff0->u1_pic_type);
489 ps_dec->u4_pred_info_pkd_idx++;
490 ps_cur_mb_info->u1_num_pred_parts++;
491
492
493 }
494
495 }
496
497 if(i1_ref_frame1 >= 0)
498 {
499 {
500 pred_info_pkd_t *ps_pred_pkd;
501 WORD8 i1_ref_idx= 0;
502
503 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
504 ih264d_fill_pred_info(pi2_final_mv1,u1_mb_partw,u1_mb_parth,u1_sub_mb_num,i1_pred,
505 ps_pred_pkd,ps_pic_buff1->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
506 ps_pic_buff1->u1_pic_type);
507 ps_dec->u4_pred_info_pkd_idx++;
508 ps_cur_mb_info->u1_num_pred_parts++;
509
510
511 }
512 }
513 }
514
515 /* Replication optimisation */
516 s_temp_mv_pred.i2_mv[0] = pi2_final_mv0[0];
517 s_temp_mv_pred.i2_mv[1] = pi2_final_mv0[1];
518 s_temp_mv_pred.i2_mv[2] = pi2_final_mv1[0];
519 s_temp_mv_pred.i2_mv[3] = pi2_final_mv1[1];
520
521 /* Calculating colocated zero information */
522 {
523 WORD16 i2_mv_x = 0, i2_mv_y = 0;
524 /*************************************/
525 /* If(bit2 and bit3 set) */
526 /* then */
527 /* (bit0 and bit1) => submmbmode */
528 /* (bit2 and bit3) => mbmode */
529 /* else */
530 /* (bit0 and bit1) => mbmode */
531 /*************************************/
532 UWORD8 u1_packed_mb_sub_mb_mode =
533 sub_partition ? (s_mvdirect.i1_partitionsize[i]) : ((s_mvdirect.i1_partitionsize[i])
534 << 2);
535
536 if(i1_ref_frame0 >= 0)
537 {
538 i2_mv_x = pi2_final_mv0[0];
539 i2_mv_y = pi2_final_mv0[1];
540 }
541 else
542 {
543 i2_mv_x = pi2_final_mv1[0];
544 i2_mv_y = pi2_final_mv1[1];
545 }
546
547 u1_colz = (ps_cur_mb_info->u1_mb_field_decodingflag << 1)
548 | ((u1_final_ref_idx == 0) && (ABS(i2_mv_x) <= 1)
549 && (ABS(i2_mv_y) <= 1));
550 u1_colz |= (u1_packed_mb_sub_mb_mode << 4);
551 }
552 ps_mv = ps_mv_nmb_start + u1_sub_mb_num;
553 ih264d_rep_mv_colz(ps_dec, &s_temp_mv_pred, ps_mv, u1_sub_mb_num, u1_colz,
554 u1_mb_parth, u1_mb_partw);
555 }
556 i = 0;
557 if(i1_ref_frame0 >= 0)
558 ps_cur_mb_info->u2_mask[i++] = ui2_mask_fwd;
559 if(i1_ref_frame1 >= 0)
560 ps_cur_mb_info->u2_mask[i] = ui2_mask_bwd;
561
562 /*if(u1_init)
563 H264_DEC_DEBUG_PRINT("hit\n");
564 else
565 H264_DEC_DEBUG_PRINT("miss\n");*/
566
567 return OK;
568 }
569
570 /*!
571 **************************************************************************
572 * \if Function name : ih264d_decode_temporal_direct \endif
573 *
574 * \brief
575 * Decodes temporal direct mode.
576 *
577 * \return
578 * None.
579 *
580 **************************************************************************
581 */
ih264d_decode_temporal_direct(dec_struct_t * ps_dec,UWORD8 u1_wd_x,dec_mb_info_t * ps_cur_mb_info,UWORD8 u1_mb_num)582 WORD32 ih264d_decode_temporal_direct(dec_struct_t * ps_dec,
583 UWORD8 u1_wd_x,
584 dec_mb_info_t * ps_cur_mb_info,
585 UWORD8 u1_mb_num)
586 {
587 struct pic_buffer_t *ps_pic_buff0, *ps_pic_buff1, *ps_col_pic;
588 mv_pred_t *ps_mv, s_temp_mv_pred;
589 UWORD8 u1_sub_mb_num;
590 UWORD8 u1_mbaff = ps_dec->ps_cur_slice->u1_mbaff_frame_flag;
591 WORD16 i2_mv_x0, i2_mv_y0, i2_mv_x1, i2_mv_y1;
592 UWORD8 u1_mb_partw, u1_mb_parth;
593 UWORD8 i, partition_size, sub_partition;
594 UWORD32 *pui32_weight_ofsts = NULL;
595 directmv_t s_mvdirect;
596 const UWORD8 *pu1_mb_parth = (const UWORD8 *)gau1_ih264d_mb_parth;
597 const UWORD8 *pu1_mb_partw = (const UWORD8 *)gau1_ih264d_mb_partw;
598 WORD8 c_refFrm0, c_refFrm1;
599 UWORD8 u1_ref_idx0, u1_is_cur_mb_fld;
600 WORD32 pic0_poc, pic1_poc, cur_poc;
601 WORD32 ret = 0;
602
603 u1_is_cur_mb_fld = ps_cur_mb_info->u1_mb_field_decodingflag;
604 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][0];
605
606 /**********************************************************************/
607 /* Call the function which gets the number of partitions and */
608 /* partition info of colocated Mb */
609 /**********************************************************************/
610 ps_dec->pf_parse_mvdirect(ps_dec, ps_dec->ps_col_pic, &s_mvdirect, u1_wd_x,
611 ps_dec->i4_submb_ofst, ps_cur_mb_info);
612 ps_col_pic = ps_dec->ps_col_pic;
613
614 for(i = 0; i < s_mvdirect.i1_num_partitions; i++)
615 {
616 UWORD8 u1_colz;
617 partition_size = s_mvdirect.i1_partitionsize[i];
618 u1_sub_mb_num = s_mvdirect.i1_submb_num[i];
619 ps_mv = ps_col_pic->ps_mv + s_mvdirect.i4_mv_indices[i];
620
621 /* This should be removed to catch unitialized memory read */
622 u1_ref_idx0 = 0;
623
624 sub_partition = partition_size >> 2;
625 partition_size &= 0x3;
626 u1_mb_partw = pu1_mb_partw[partition_size];
627 u1_mb_parth = pu1_mb_parth[partition_size];
628 if(sub_partition != 0)
629 {
630 u1_mb_partw >>= 1;
631 u1_mb_parth >>= 1;
632 }
633 c_refFrm0 = ps_mv->i1_ref_frame[0];
634 c_refFrm1 = ps_mv->i1_ref_frame[1];
635
636 if((c_refFrm0 == -1) && (c_refFrm1 == -1))
637 {
638 u1_ref_idx0 = 0;
639 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][0];
640 if(u1_mbaff && u1_is_cur_mb_fld)
641 {
642 if(ps_cur_mb_info->u1_topmb)
643 {
644 pic0_poc = ps_pic_buff0->i4_top_field_order_cnt;
645 pic1_poc = ps_pic_buff1->i4_top_field_order_cnt;
646 cur_poc = ps_dec->ps_cur_pic->i4_top_field_order_cnt;
647 }
648 else
649 {
650 pic1_poc = ps_pic_buff1->i4_bottom_field_order_cnt;
651 cur_poc = ps_dec->ps_cur_pic->i4_bottom_field_order_cnt;
652 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][MAX_REF_BUFS];
653 pic0_poc = ps_pic_buff0->i4_bottom_field_order_cnt;
654 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][MAX_REF_BUFS];
655 }
656 }
657 else
658 {
659 pic0_poc = ps_pic_buff0->i4_avg_poc;
660 pic1_poc = ps_pic_buff1->i4_avg_poc;
661 cur_poc = ps_dec->ps_cur_pic->i4_poc;
662 }
663 }
664 else
665 {
666 UWORD8 uc_i, u1_num_frw_ref_pics;
667 UWORD8 buf_id, u1_pic_type;
668 buf_id = ps_mv->u1_col_ref_pic_idx;
669 u1_pic_type = ps_mv->u1_pic_type;
670 if(ps_dec->ps_cur_slice->u1_field_pic_flag)
671 {
672 if(s_mvdirect.u1_vert_mv_scale == FRM_TO_FLD)
673 {
674 u1_pic_type = TOP_FLD;
675 if(ps_dec->ps_cur_slice->u1_bottom_field_flag)
676 u1_pic_type = BOT_FLD;
677 }
678 }
679 u1_num_frw_ref_pics =
680 ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0];
681
682 for(uc_i = 0; uc_i < u1_num_frw_ref_pics; uc_i++)
683 {
684 if(ps_dec->ps_cur_slice->u1_field_pic_flag)
685 {
686 if(ps_dec->ps_ref_pic_buf_lx[0][uc_i]->u1_mv_buf_id == buf_id)
687 {
688 if(ps_dec->ps_ref_pic_buf_lx[0][uc_i]->u1_pic_type
689 == u1_pic_type)
690 {
691 u1_ref_idx0 = uc_i;
692 break;
693 }
694 }
695 }
696 else
697 {
698 if(ps_dec->ps_ref_pic_buf_lx[0][uc_i]->u1_mv_buf_id == buf_id)
699 {
700 u1_ref_idx0 = uc_i;
701 break;
702 }
703 }
704 }
705
706 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][u1_ref_idx0];
707 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][0];
708
709 if(u1_mbaff && u1_is_cur_mb_fld)
710 {
711 pic0_poc = ps_pic_buff0->i4_top_field_order_cnt;
712 u1_ref_idx0 <<= 1;
713 if(s_mvdirect.u1_vert_mv_scale == ONE_TO_ONE)
714 {
715 if(u1_pic_type == BOT_FLD)
716 {
717 pic0_poc = ps_pic_buff0->i4_bottom_field_order_cnt;
718 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][(u1_ref_idx0
719 >> 1) + MAX_REF_BUFS];
720 if(ps_cur_mb_info->u1_topmb)
721 u1_ref_idx0++;
722 }
723 else
724 {
725 if(1 - ps_cur_mb_info->u1_topmb)
726 u1_ref_idx0++;
727 }
728 }
729 if(s_mvdirect.u1_vert_mv_scale == FRM_TO_FLD)
730 {
731 if(1 - ps_cur_mb_info->u1_topmb)
732 {
733 pic0_poc = ps_pic_buff0->i4_bottom_field_order_cnt;
734 ps_pic_buff0 = ps_dec->ps_ref_pic_buf_lx[0][(u1_ref_idx0
735 >> 1) + MAX_REF_BUFS];
736 }
737 }
738 if(ps_cur_mb_info->u1_topmb)
739 {
740 pic1_poc = ps_pic_buff1->i4_top_field_order_cnt;
741 cur_poc = ps_dec->ps_cur_pic->i4_top_field_order_cnt;
742 }
743 else
744 {
745 pic1_poc = ps_pic_buff1->i4_bottom_field_order_cnt;
746 cur_poc = ps_dec->ps_cur_pic->i4_bottom_field_order_cnt;
747 ps_pic_buff1 = ps_dec->ps_ref_pic_buf_lx[1][MAX_REF_BUFS];
748 }
749 }
750 else
751 {
752 pic0_poc = ps_pic_buff0->i4_avg_poc;
753 pic1_poc = ps_pic_buff1->i4_avg_poc;
754 cur_poc = ps_dec->ps_cur_pic->i4_poc;
755 }
756 }
757 {
758 WORD16 i16_td;
759 WORD32 diff;
760 if(c_refFrm0 >= 0)
761 {
762 i2_mv_x0 = ps_mv->i2_mv[0];
763 i2_mv_y0 = ps_mv->i2_mv[1];
764 }
765 else if(c_refFrm1 >= 0)
766 {
767 i2_mv_x0 = ps_mv->i2_mv[2];
768 i2_mv_y0 = ps_mv->i2_mv[3];
769 }
770 else
771 {
772 i2_mv_x0 = 0;
773 i2_mv_y0 = 0;
774 }
775 /* If FRM_TO_FLD or FLD_TO_FRM scale the "y" component of the colocated Mv*/
776 if(s_mvdirect.u1_vert_mv_scale == FRM_TO_FLD)
777 {
778 i2_mv_y0 /= 2;
779 }
780 else if(s_mvdirect.u1_vert_mv_scale == FLD_TO_FRM)
781 {
782 i2_mv_y0 *= 2;
783 }
784
785 diff = pic1_poc - pic0_poc;
786 i16_td = CLIP_S8(diff);
787 if((ps_pic_buff0->u1_is_short == 0) || (i16_td == 0))
788 {
789 i2_mv_x1 = 0;
790 i2_mv_y1 = 0;
791 }
792 else
793 {
794 WORD16 i16_tb, i16_tx, i2_dist_scale_factor, i16_temp;
795
796 diff = cur_poc - pic0_poc;
797 i16_tb = CLIP_S8(diff);
798
799 i16_tx = (16384 + ABS(SIGN_POW2_DIV(i16_td, 1))) / i16_td;
800 i2_dist_scale_factor = CLIP_S11(
801 (((i16_tb * i16_tx) + 32) >> 6));
802 i16_temp = (i2_mv_x0 * i2_dist_scale_factor + 128) >> 8;
803 i2_mv_x1 = i16_temp - i2_mv_x0;
804 i2_mv_x0 = i16_temp;
805
806 i16_temp = (i2_mv_y0 * i2_dist_scale_factor + 128) >> 8;
807 i2_mv_y1 = i16_temp - i2_mv_y0;
808 i2_mv_y0 = i16_temp;
809 }
810 {
811 mv_pred_t *ps_mv;
812
813 /*u1_sub_mb_x = u1_sub_mb_num & 0x03;
814 uc_sub_mb_y = u1_sub_mb_num >> 2;*/
815 if(ps_dec->ps_cur_pps->u1_wted_bipred_idc)
816 {
817 UWORD8 u1_idx =
818 u1_ref_idx0
819 * ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
820 UWORD8 u1_scale_ref = u1_mbaff && u1_is_cur_mb_fld;
821 if(u1_scale_ref)
822 u1_idx >>= 1;
823 pui32_weight_ofsts = (UWORD32*)&ps_dec->pu4_wt_ofsts[2
824 * X3(u1_idx)];
825 if(u1_scale_ref
826 && (ps_dec->ps_cur_pps->u1_wted_bipred_idc
827 == 2))
828 {
829 WORD16 i2_ref_idx;
830 i2_ref_idx = u1_ref_idx0;
831 i2_ref_idx *=
832 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]
833 << 1);
834 if(!ps_cur_mb_info->u1_topmb)
835 i2_ref_idx +=
836 (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0]
837 << 1)
838 * (ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1]
839 << 1);
840 pui32_weight_ofsts =
841 (UWORD32*)&ps_dec->pu4_mbaff_wt_mat[2
842 * X3(i2_ref_idx)];
843 }
844 }
845 {
846 pred_info_pkd_t *ps_pred_pkd;
847 WORD16 i2_mv[2];
848 WORD8 i1_ref_idx= 0;
849
850 i2_mv[0] = i2_mv_x0;
851 i2_mv[1] = i2_mv_y0;
852
853 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
854 ih264d_fill_pred_info(i2_mv,u1_mb_partw,u1_mb_parth,u1_sub_mb_num,PRED_L0 | PRED_L1,
855 ps_pred_pkd,ps_pic_buff0->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
856 ps_pic_buff0->u1_pic_type);
857 ps_dec->u4_pred_info_pkd_idx++;
858 ps_cur_mb_info->u1_num_pred_parts++;
859
860
861 }
862 {
863 pred_info_pkd_t *ps_pred_pkd;
864 WORD16 i2_mv[2];
865 WORD8 i1_ref_idx= 0;
866
867 i2_mv[0] = i2_mv_x1;
868 i2_mv[1] = i2_mv_y1;
869
870 ps_pred_pkd = ps_dec->ps_pred_pkd + ps_dec->u4_pred_info_pkd_idx;
871 ih264d_fill_pred_info(i2_mv,u1_mb_partw,u1_mb_parth,u1_sub_mb_num,PRED_L0 | PRED_L1,
872 ps_pred_pkd,ps_pic_buff1->u1_pic_buf_id,i1_ref_idx,pui32_weight_ofsts,
873 ps_pic_buff1->u1_pic_type);
874 ps_dec->u4_pred_info_pkd_idx++;
875 ps_cur_mb_info->u1_num_pred_parts++;
876
877
878 }
879
880 /* Replication optimisation */
881 s_temp_mv_pred.i2_mv[0] = i2_mv_x0;
882 s_temp_mv_pred.i2_mv[1] = i2_mv_y0;
883 s_temp_mv_pred.i2_mv[2] = i2_mv_x1;
884 s_temp_mv_pred.i2_mv[3] = i2_mv_y1;
885 s_temp_mv_pred.i1_ref_frame[0] = u1_ref_idx0;
886 s_temp_mv_pred.i1_ref_frame[1] = 0;
887 s_temp_mv_pred.u1_col_ref_pic_idx = ps_pic_buff0->u1_mv_buf_id;
888 s_temp_mv_pred.u1_pic_type = ps_pic_buff0->u1_pic_type;
889 ps_mv = ps_dec->ps_mv_cur + (u1_mb_num << 4) + u1_sub_mb_num;
890
891 {
892 WORD16 i2_mv_x = 0, i2_mv_y = 0;
893 UWORD8 u1_packed_mb_sub_mb_mode =
894 sub_partition ? (s_mvdirect.i1_partitionsize[i]) : ((s_mvdirect.i1_partitionsize[i])
895 << 2);
896
897 if(c_refFrm0 >= 0)
898 {
899 i2_mv_x = i2_mv_x0;
900 i2_mv_y = i2_mv_y0;
901 }
902 else
903 {
904 i2_mv_x = i2_mv_x1;
905 i2_mv_y = i2_mv_y1;
906 }
907
908 u1_colz =
909 (ps_cur_mb_info->u1_mb_field_decodingflag << 1)
910 | ((u1_ref_idx0 == 0)
911 && (ABS(i2_mv_x)
912 <= 1)
913 && (ABS(i2_mv_y)
914 <= 1));
915 u1_colz |= (u1_packed_mb_sub_mb_mode << 4);
916 }
917 ih264d_rep_mv_colz(ps_dec, &s_temp_mv_pred, ps_mv, u1_sub_mb_num,
918 u1_colz, u1_mb_parth, u1_mb_partw);
919 }
920 }
921 }
922 /* return value set to UWORD8 to make it homogeneous */
923 /* with decodespatialdirect */
924 return OK;
925 }
926
ih264d_convert_frm_to_fld_list(struct pic_buffer_t * ps_ref_pic_buf_lx,UWORD8 * pu1_L0,dec_struct_t * ps_dec,UWORD8 u1_num_short_term_bufs)927 void ih264d_convert_frm_to_fld_list(struct pic_buffer_t *ps_ref_pic_buf_lx,
928 UWORD8 *pu1_L0,
929 dec_struct_t *ps_dec,
930 UWORD8 u1_num_short_term_bufs)
931 {
932 UWORD8 uc_count = *pu1_L0, i, uc_l1, uc_lx, j;
933 struct pic_buffer_t *ps_ref_lx[2], *ps_ref_pic_lx;
934 UWORD8 u1_bottom_field_flag;
935 dec_slice_params_t *ps_cur_slice;
936 UWORD8 u1_ref[2], u1_fld[2], u1_same_fld, u1_op_fld;
937 UWORD32 ui_half_num_of_sub_mbs;
938
939 uc_l1 = 0;
940 uc_lx = 0;
941 ps_cur_slice = ps_dec->ps_cur_slice;
942 ps_ref_pic_lx = ps_ref_pic_buf_lx - MAX_REF_BUFS;
943 ps_ref_lx[0] = ps_ref_pic_buf_lx;
944 ps_ref_lx[1] = ps_ref_pic_buf_lx;
945 u1_bottom_field_flag = ps_cur_slice->u1_bottom_field_flag;
946 ui_half_num_of_sub_mbs = ((ps_dec->u2_pic_ht * ps_dec->u2_pic_wd) >> 5);
947 if(u1_bottom_field_flag)
948 {
949 u1_ref[0] = BOT_REF;
950 u1_ref[1] = TOP_REF;
951 u1_fld[0] = BOT_FLD;
952 u1_fld[1] = TOP_FLD;
953 u1_same_fld = BOT_FLD;
954 u1_op_fld = TOP_FLD;
955 }
956 else
957 {
958 u1_ref[0] = TOP_REF;
959 u1_ref[1] = BOT_REF;
960 u1_fld[0] = TOP_FLD;
961 u1_fld[1] = BOT_FLD;
962 u1_same_fld = TOP_FLD;
963 u1_op_fld = BOT_FLD;
964 }
965
966 /* Create the field list starting with all the short term */
967 /* frames followed by all the long term frames. No long term */
968 /* reference field should have a list idx less than a short */
969 /* term reference field during initiailization. */
970
971 for(j = 0; j < 2; j++)
972 {
973 i = ((j == 0) ? 0 : u1_num_short_term_bufs);
974 uc_count = ((j == 0) ? u1_num_short_term_bufs : *pu1_L0);
975 for(; i < uc_count; i++, ps_ref_lx[0]++)
976 {
977 /* Search field of same parity in Frame list */
978 if((ps_ref_lx[0]->u1_pic_type & u1_ref[0])) // || ((ps_ref_lx[0]->u1_picturetype & 0x3) == 0))
979 {
980 /* Insert PIC of same parity in RefPicList */
981 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_lx, ps_ref_lx[0]);
982 ps_ref_pic_lx->i4_pic_num = (ps_ref_pic_lx->i4_pic_num * 2 + 1);
983 ps_ref_pic_lx->u1_long_term_pic_num =
984 (ps_ref_pic_lx->u1_long_term_frm_idx * 2 + 1);
985 ps_ref_pic_lx->u1_pic_type = u1_same_fld;
986 if(u1_fld[0] & BOT_FLD)
987 {
988 ps_ref_pic_lx->u1_pic_type = BOT_FLD;
989 ps_ref_pic_lx->pu1_buf1 += ps_ref_pic_lx->u2_frm_wd_y;
990 ps_ref_pic_lx->pu1_buf2 += ps_ref_pic_lx->u2_frm_wd_uv;
991 ps_ref_pic_lx->pu1_buf3 += ps_ref_pic_lx->u2_frm_wd_uv;
992 if(ps_ref_pic_lx->u1_picturetype & 0x3)
993 {
994 ps_ref_pic_lx->pu1_col_zero_flag += ui_half_num_of_sub_mbs;
995 ps_ref_pic_lx->ps_mv += ui_half_num_of_sub_mbs;
996 }
997 ps_ref_pic_lx->i4_poc =
998 ps_ref_pic_lx->i4_bottom_field_order_cnt;
999 ps_ref_pic_lx->i4_avg_poc =
1000 ps_ref_pic_lx->i4_bottom_field_order_cnt;
1001 }
1002 else
1003 {
1004 ps_ref_pic_lx->u1_pic_type = TOP_FLD;
1005 ps_ref_pic_lx->i4_poc = ps_ref_pic_lx->i4_top_field_order_cnt;
1006 ps_ref_pic_lx->i4_avg_poc =
1007 ps_ref_pic_lx->i4_top_field_order_cnt;
1008 }
1009
1010 ps_ref_pic_lx++;
1011 uc_lx++;
1012 /* Find field of opposite parity */
1013 if(uc_l1 < uc_count && ps_ref_lx[1])
1014 {
1015 while(!(ps_ref_lx[1]->u1_pic_type & u1_ref[1]))
1016 {
1017 ps_ref_lx[1]++;
1018 uc_l1++;
1019 if(uc_l1 >= uc_count)
1020 ps_ref_lx[1] = 0;
1021 if(!ps_ref_lx[1])
1022 break;
1023 }
1024
1025 if(ps_ref_lx[1])
1026 {
1027 uc_l1++;
1028 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_lx,
1029 ps_ref_lx[1]);
1030 ps_ref_pic_lx->u1_pic_type = u1_op_fld;
1031 ps_ref_pic_lx->i4_pic_num = (ps_ref_pic_lx->i4_pic_num * 2);
1032 ps_ref_pic_lx->u1_long_term_pic_num =
1033 (ps_ref_pic_lx->u1_long_term_frm_idx * 2);
1034 if(u1_fld[1] & BOT_FLD)
1035 {
1036 ps_ref_pic_lx->u1_pic_type = BOT_FLD;
1037 ps_ref_pic_lx->pu1_buf1 += ps_ref_pic_lx->u2_frm_wd_y;
1038 ps_ref_pic_lx->pu1_buf2 += ps_ref_pic_lx->u2_frm_wd_uv;
1039 ps_ref_pic_lx->pu1_buf3 += ps_ref_pic_lx->u2_frm_wd_uv;
1040 if(ps_ref_pic_lx->u1_picturetype & 0x3)
1041 {
1042 ps_ref_pic_lx->pu1_col_zero_flag +=
1043 ui_half_num_of_sub_mbs;
1044 ps_ref_pic_lx->ps_mv += ui_half_num_of_sub_mbs;
1045 }
1046 ps_ref_pic_lx->i4_poc =
1047 ps_ref_pic_lx->i4_bottom_field_order_cnt;
1048 ps_ref_pic_lx->i4_avg_poc =
1049 ps_ref_pic_lx->i4_bottom_field_order_cnt;
1050 }
1051 else
1052 {
1053 ps_ref_pic_lx->u1_pic_type = TOP_FLD;
1054 ps_ref_pic_lx->i4_poc =
1055 ps_ref_pic_lx->i4_top_field_order_cnt;
1056 ps_ref_pic_lx->i4_avg_poc =
1057 ps_ref_pic_lx->i4_top_field_order_cnt;
1058 }
1059 ps_ref_pic_lx++;
1060 uc_lx++;
1061 ps_ref_lx[1]++;
1062 }
1063 }
1064 }
1065 }
1066
1067 /* Same parity fields are over, now insert left over opposite parity fields */
1068 /** Added if(ps_ref_lx[1]) for error checks */
1069 if(ps_ref_lx[1])
1070 {
1071 for(; uc_l1 < uc_count; uc_l1++)
1072 {
1073 if(ps_ref_lx[1]->u1_pic_type & u1_ref[1])
1074 {
1075 /* Insert PIC of opposite parity in RefPicList */
1076 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_lx,
1077 ps_ref_lx[1]);
1078 ps_ref_pic_lx->u1_pic_type = u1_op_fld;
1079 ps_ref_pic_lx->i4_pic_num = (ps_ref_pic_lx->i4_pic_num * 2);
1080 ps_ref_pic_lx->u1_long_term_pic_num =
1081 (ps_ref_pic_lx->u1_long_term_frm_idx * 2);
1082 if(u1_op_fld == BOT_FLD)
1083 {
1084 ps_ref_pic_lx->u1_pic_type = BOT_FLD;
1085 ps_ref_pic_lx->pu1_buf1 += ps_ref_pic_lx->u2_frm_wd_y;
1086 ps_ref_pic_lx->pu1_buf2 += ps_ref_pic_lx->u2_frm_wd_uv;
1087 ps_ref_pic_lx->pu1_buf3 += ps_ref_pic_lx->u2_frm_wd_uv;
1088 if(ps_ref_pic_lx->u1_picturetype & 0x3)
1089 {
1090 ps_ref_pic_lx->pu1_col_zero_flag +=
1091 ui_half_num_of_sub_mbs;
1092 ps_ref_pic_lx->ps_mv += ui_half_num_of_sub_mbs;
1093 }
1094 ps_ref_pic_lx->i4_poc =
1095 ps_ref_pic_lx->i4_bottom_field_order_cnt;
1096 ps_ref_pic_lx->i4_avg_poc =
1097 ps_ref_pic_lx->i4_bottom_field_order_cnt;
1098 }
1099 else
1100 {
1101 ps_ref_pic_lx->i4_poc =
1102 ps_ref_pic_lx->i4_top_field_order_cnt;
1103 ps_ref_pic_lx->i4_avg_poc =
1104 ps_ref_pic_lx->i4_top_field_order_cnt;
1105 }
1106 ps_ref_pic_lx++;
1107 uc_lx++;
1108 ps_ref_lx[1]++;
1109 }
1110 }
1111 }
1112 }
1113 *pu1_L0 = uc_lx;
1114 }
1115
ih264d_convert_frm_mbaff_list(dec_struct_t * ps_dec)1116 void ih264d_convert_frm_mbaff_list(dec_struct_t *ps_dec)
1117 {
1118 struct pic_buffer_t **ps_ref_pic_lx;
1119 UWORD8 u1_max_ref_idx, idx;
1120 UWORD16 u2_frm_wd_y, u2_frm_wd_uv;
1121 struct pic_buffer_t **ps_ref_pic_buf_lx;
1122 UWORD32 u4_half_num_of_sub_mbs = ((ps_dec->u2_pic_ht * ps_dec->u2_pic_wd) >> 5);
1123
1124 ps_ref_pic_buf_lx = ps_dec->ps_ref_pic_buf_lx[0];
1125 ps_ref_pic_lx = ps_dec->ps_ref_pic_buf_lx[0];
1126 u1_max_ref_idx = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[0];
1127 for(idx = 0; idx < u1_max_ref_idx; idx++)
1128 {
1129 ps_ref_pic_lx[idx]->u1_pic_type = TOP_FLD;
1130 ps_ref_pic_lx[idx]->i4_poc = ps_ref_pic_lx[idx]->i4_top_field_order_cnt;
1131
1132 }
1133 u2_frm_wd_y = ps_dec->u2_frm_wd_y;
1134 u2_frm_wd_uv = ps_dec->u2_frm_wd_uv;
1135
1136 for(idx = 0; idx < u1_max_ref_idx; idx++)
1137 {
1138 *ps_ref_pic_lx[idx + MAX_REF_BUFS] = *ps_ref_pic_buf_lx[idx];
1139 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_buf1 =
1140 ps_ref_pic_buf_lx[idx]->pu1_buf1 + u2_frm_wd_y;
1141 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_buf2 =
1142 ps_ref_pic_buf_lx[idx]->pu1_buf2 + u2_frm_wd_uv;
1143 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_buf3 =
1144 ps_ref_pic_buf_lx[idx]->pu1_buf3 + u2_frm_wd_uv;
1145
1146 ps_ref_pic_lx[idx + MAX_REF_BUFS]->u1_pic_type = BOT_FLD;
1147 ps_ref_pic_lx[idx + MAX_REF_BUFS]->i4_poc =
1148 ps_ref_pic_buf_lx[idx]->i4_bottom_field_order_cnt;
1149 if(ps_ref_pic_buf_lx[idx]->u1_picturetype & 0x3)
1150 {
1151 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_col_zero_flag =
1152 ps_ref_pic_buf_lx[idx]->pu1_col_zero_flag
1153 + u4_half_num_of_sub_mbs;
1154 ps_ref_pic_lx[idx + MAX_REF_BUFS]->ps_mv =
1155 ps_ref_pic_buf_lx[idx]->ps_mv + u4_half_num_of_sub_mbs;
1156 }
1157 }
1158
1159 if(ps_dec->u1_B)
1160 {
1161 ps_ref_pic_buf_lx = ps_dec->ps_ref_pic_buf_lx[1];
1162 ps_ref_pic_lx = ps_dec->ps_ref_pic_buf_lx[1];
1163 u1_max_ref_idx = ps_dec->ps_cur_slice->u1_num_ref_idx_lx_active[1];
1164 for(idx = 0; idx < u1_max_ref_idx; idx++)
1165 {
1166 ps_ref_pic_lx[idx]->u1_pic_type = TOP_FLD;
1167 ps_ref_pic_lx[idx]->i4_poc = ps_ref_pic_lx[idx]->i4_top_field_order_cnt;
1168
1169 }
1170
1171 for(idx = 0; idx < u1_max_ref_idx; idx++)
1172 {
1173 *ps_ref_pic_lx[idx + MAX_REF_BUFS] = *ps_ref_pic_buf_lx[idx];
1174 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_buf1 =
1175 ps_ref_pic_buf_lx[idx]->pu1_buf1 + u2_frm_wd_y;
1176 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_buf2 =
1177 ps_ref_pic_buf_lx[idx]->pu1_buf2 + u2_frm_wd_uv;
1178 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_buf3 =
1179 ps_ref_pic_buf_lx[idx]->pu1_buf3 + u2_frm_wd_uv;
1180 ps_ref_pic_lx[idx + MAX_REF_BUFS]->u1_pic_type = BOT_FLD;
1181 ps_ref_pic_lx[idx + MAX_REF_BUFS]->i4_poc =
1182 ps_ref_pic_buf_lx[idx]->i4_bottom_field_order_cnt;
1183
1184 if(ps_ref_pic_buf_lx[idx]->u1_picturetype & 0x3)
1185 {
1186 ps_ref_pic_lx[idx + MAX_REF_BUFS]->pu1_col_zero_flag =
1187 ps_ref_pic_buf_lx[idx]->pu1_col_zero_flag
1188 + u4_half_num_of_sub_mbs;
1189 ps_ref_pic_lx[idx + MAX_REF_BUFS]->ps_mv =
1190 ps_ref_pic_buf_lx[idx]->ps_mv
1191 + u4_half_num_of_sub_mbs;
1192 }
1193 }
1194 }
1195 }
1196 /*!
1197 **************************************************************************
1198 * \if Function name : ih264d_init_ref_idx_lx_b \endif
1199 *
1200 * \brief
1201 * Initializes forward and backward refernce lists for B slice decoding.
1202 *
1203 *
1204 * \return
1205 * 0 on Success and Error code otherwise
1206 **************************************************************************
1207 */
ih264d_init_ref_idx_lx_b(dec_struct_t * ps_dec)1208 void ih264d_init_ref_idx_lx_b(dec_struct_t *ps_dec)
1209 {
1210 struct pic_buffer_t *ps_ref_pic_buf_lx;
1211 dpb_manager_t *ps_dpb_mgr;
1212 struct dpb_info_t *ps_next_dpb;
1213 WORD32 i_cur_poc, i_max_st_poc, i_min_st_poc, i_ref_poc, i_temp_poc;
1214 WORD8 i;
1215 UWORD8 u1_max_lt_index, u1_min_lt_index;
1216 UWORD32 u4_lt_index;
1217 UWORD8 u1_field_pic_flag;
1218 dec_slice_params_t *ps_cur_slice;
1219 UWORD8 u1_L0, u1_L1;
1220 UWORD8 u1_num_short_term_bufs;
1221 UWORD8 u1_max_ref_idx_l0, u1_max_ref_idx_l1;
1222
1223 ps_cur_slice = ps_dec->ps_cur_slice;
1224 u1_field_pic_flag = ps_cur_slice->u1_field_pic_flag;
1225 u1_max_ref_idx_l0 = ps_cur_slice->u1_num_ref_idx_lx_active[0]
1226 << u1_field_pic_flag;
1227 u1_max_ref_idx_l1 = ps_cur_slice->u1_num_ref_idx_lx_active[1]
1228 << u1_field_pic_flag;
1229
1230 ps_dpb_mgr = ps_dec->ps_dpb_mgr;
1231 /* Get the current POC */
1232 i_cur_poc = ps_dec->ps_cur_pic->i4_poc;
1233
1234 /* Get MaxStPOC,MinStPOC,MaxLt,MinLt */
1235 i_max_st_poc = i_cur_poc;
1236 i_min_st_poc = i_cur_poc;
1237 u1_max_lt_index = MAX_REF_BUFS + 1;
1238 u1_min_lt_index = MAX_REF_BUFS + 1;
1239 /* Start from ST head */
1240 ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1241 for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1242 {
1243 i_ref_poc = ps_next_dpb->ps_pic_buf->i4_poc;
1244 if(i_ref_poc < i_cur_poc)
1245 {
1246 /* RefPic Buf POC is before Current POC in display order */
1247 i_min_st_poc = MIN(i_min_st_poc, i_ref_poc);
1248 }
1249 else
1250 {
1251 /* RefPic Buf POC is after Current POC in display order */
1252 i_max_st_poc = MAX(i_max_st_poc, i_ref_poc);
1253 }
1254
1255 /* Chase the next link */
1256 ps_next_dpb = ps_next_dpb->ps_prev_short;
1257 }
1258
1259 /* Start from LT head */
1260 ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
1261 if(ps_next_dpb)
1262 {
1263 u1_max_lt_index = ps_next_dpb->u1_lt_idx;
1264 u1_min_lt_index = ps_next_dpb->u1_lt_idx;
1265 }
1266 for(i = 0; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
1267 {
1268 u4_lt_index = ps_next_dpb->u1_lt_idx;
1269 u1_max_lt_index = (UWORD8)(MAX(u1_max_lt_index, u4_lt_index));
1270 u1_min_lt_index = (UWORD8)(MIN(u1_min_lt_index, u4_lt_index));
1271
1272 /* Chase the next link */
1273 ps_next_dpb = ps_next_dpb->ps_prev_long;
1274 }
1275
1276 /* 1. Initialize refIdxL0 */
1277 u1_L0 = 0;
1278 if(u1_field_pic_flag)
1279 {
1280 ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[0][0];
1281 ps_ref_pic_buf_lx += MAX_REF_BUFS;
1282 i_temp_poc = i_cur_poc;
1283 }
1284 else
1285 {
1286 ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[0][0];
1287 i_temp_poc = i_cur_poc - 1;
1288 }
1289 /* Arrange all short term buffers in output order as given by POC */
1290 /* 1.1 Arrange POC's less than CurrPOC in the descending POC order starting
1291 from (CurrPOC - 1)*/
1292 for(; i_temp_poc >= i_min_st_poc; i_temp_poc--)
1293 {
1294 /* Start from ST head */
1295 ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1296 for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1297 {
1298 if((WORD32)ps_next_dpb->ps_pic_buf->i4_poc == i_temp_poc)
1299 {
1300 /* Copy info in pic buffer */
1301 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1302 ps_next_dpb->ps_pic_buf);
1303 ps_ref_pic_buf_lx++;
1304 u1_L0++;
1305 break;
1306 }
1307 ps_next_dpb = ps_next_dpb->ps_prev_short;
1308 }
1309 }
1310
1311 {
1312 /* 1.2. Arrange POC's more than CurrPOC in the ascending POC order starting
1313 from (CurrPOC + 1)*/
1314 for(i_temp_poc = i_cur_poc + 1; i_temp_poc <= i_max_st_poc; i_temp_poc++)
1315 {
1316 /* Start from ST head */
1317 ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1318 for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1319 {
1320 if((WORD32)ps_next_dpb->ps_pic_buf->i4_poc == i_temp_poc)
1321 {
1322 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1323 ps_next_dpb->ps_pic_buf);
1324 ps_ref_pic_buf_lx++;
1325 u1_L0++;
1326 break;
1327 }
1328 ps_next_dpb = ps_next_dpb->ps_prev_short;
1329 }
1330 }
1331 }
1332
1333 /* 1.3 Arrange all Long term buffers in ascending order, in LongtermIndex */
1334 /* Start from ST head */
1335
1336 u1_num_short_term_bufs = u1_L0;
1337 for(u4_lt_index = u1_min_lt_index; u4_lt_index <= u1_max_lt_index; u4_lt_index++)
1338 {
1339 ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
1340 for(i = 0; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
1341 {
1342 if(ps_next_dpb->u1_lt_idx == u4_lt_index)
1343 {
1344 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1345 ps_next_dpb->ps_pic_buf);
1346 ps_ref_pic_buf_lx->u1_long_term_pic_num =
1347 ps_ref_pic_buf_lx->u1_long_term_frm_idx;
1348
1349 ps_ref_pic_buf_lx++;
1350 u1_L0++;
1351 break;
1352 }
1353 ps_next_dpb = ps_next_dpb->ps_prev_long;
1354 }
1355 }
1356
1357 if(u1_field_pic_flag)
1358 {
1359 /* Initialize the rest of the entries in the */
1360 /* reference list to handle of errors */
1361 {
1362 UWORD8 u1_i;
1363 pic_buffer_t *ps_ref_pic;
1364
1365 ps_ref_pic = ps_dpb_mgr->ps_init_dpb[0][0] + MAX_REF_BUFS;
1366
1367 if(NULL == ps_ref_pic->pu1_buf1)
1368 {
1369 ps_ref_pic = ps_dec->ps_cur_pic;
1370 }
1371 for(u1_i = u1_L0; u1_i < u1_max_ref_idx_l0; u1_i++)
1372 {
1373 *ps_ref_pic_buf_lx = *ps_ref_pic;
1374 ps_ref_pic_buf_lx++;
1375 }
1376 }
1377 ih264d_convert_frm_to_fld_list(
1378 ps_dpb_mgr->ps_init_dpb[0][0] + MAX_REF_BUFS, &u1_L0,
1379 ps_dec, u1_num_short_term_bufs);
1380
1381 ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[0][0] + u1_L0;
1382 }
1383
1384 ps_dec->ps_cur_slice->u1_initial_list_size[0] = u1_L0;
1385
1386 /* Initialize the rest of the entries in the */
1387 /* reference list to handle of errors */
1388 {
1389 UWORD8 u1_i;
1390 pic_buffer_t *ps_ref_pic;
1391
1392 ps_ref_pic = ps_dpb_mgr->ps_init_dpb[0][0];
1393
1394 if(NULL == ps_ref_pic->pu1_buf1)
1395 {
1396 ps_ref_pic = ps_dec->ps_cur_pic;
1397 }
1398 for(u1_i = u1_L0; u1_i < u1_max_ref_idx_l0; u1_i++)
1399 {
1400 *ps_ref_pic_buf_lx = *ps_ref_pic;
1401 ps_ref_pic_buf_lx++;
1402 }
1403 }
1404 {
1405 /* 2. Initialize refIdxL1 */
1406 u1_L1 = 0;
1407 if(u1_field_pic_flag)
1408 {
1409 ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[1][0] + MAX_REF_BUFS;
1410 }
1411 else
1412 {
1413 ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[1][0];
1414 }
1415
1416 /* 2.1. Arrange POC's more than CurrPOC in the ascending POC order starting
1417 from (CurrPOC + 1)*/
1418 for(i_temp_poc = i_cur_poc + 1; i_temp_poc <= i_max_st_poc; i_temp_poc++)
1419 {
1420 /* Start from ST head */
1421 ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1422 for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1423 {
1424 if((WORD32)ps_next_dpb->ps_pic_buf->i4_poc == i_temp_poc)
1425 {
1426 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1427 ps_next_dpb->ps_pic_buf);
1428 ps_ref_pic_buf_lx++;
1429 u1_L1++;
1430 break;
1431 }
1432 ps_next_dpb = ps_next_dpb->ps_prev_short;
1433 }
1434 }
1435
1436 if(u1_field_pic_flag)
1437 {
1438 i_temp_poc = i_cur_poc;
1439 }
1440 else
1441 {
1442 i_temp_poc = i_cur_poc - 1;
1443 }
1444
1445 /* Arrange all short term buffers in output order as given by POC */
1446 /* 2.2 Arrange POC's less than CurrPOC in the descending POC order starting
1447 from (CurrPOC - 1)*/
1448 for(; i_temp_poc >= i_min_st_poc; i_temp_poc--)
1449 {
1450 /* Start from ST head */
1451 ps_next_dpb = ps_dpb_mgr->ps_dpb_st_head;
1452 for(i = 0; i < ps_dpb_mgr->u1_num_st_ref_bufs; i++)
1453 {
1454 if((WORD32)ps_next_dpb->ps_pic_buf->i4_poc == i_temp_poc)
1455 {
1456 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1457 ps_next_dpb->ps_pic_buf);
1458 ps_ref_pic_buf_lx++;
1459 u1_L1++;
1460 break;
1461 }
1462 ps_next_dpb = ps_next_dpb->ps_prev_short;
1463 }
1464 }
1465
1466 /* 2.3 Arrange all Long term buffers in ascending order, in LongtermIndex */
1467 /* Start from ST head */
1468 u1_num_short_term_bufs = u1_L1;
1469
1470 for(u4_lt_index = u1_min_lt_index; u4_lt_index <= u1_max_lt_index;
1471 u4_lt_index++)
1472 {
1473 ps_next_dpb = ps_dpb_mgr->ps_dpb_ht_head;
1474 for(i = 0; i < ps_dpb_mgr->u1_num_lt_ref_bufs; i++)
1475 {
1476 if(ps_next_dpb->u1_lt_idx == u4_lt_index)
1477 {
1478 ih264d_insert_pic_in_ref_pic_listx(ps_ref_pic_buf_lx,
1479 ps_next_dpb->ps_pic_buf);
1480 ps_ref_pic_buf_lx->u1_long_term_pic_num =
1481 ps_ref_pic_buf_lx->u1_long_term_frm_idx;
1482 ps_ref_pic_buf_lx++;
1483 u1_L1++;
1484 break;
1485 }
1486 ps_next_dpb = ps_next_dpb->ps_prev_long;
1487 }
1488 }
1489
1490 if(u1_field_pic_flag)
1491 {
1492 /* Initialize the rest of the entries in the */
1493 /* reference list to handle of errors */
1494 {
1495 UWORD8 u1_i;
1496 pic_buffer_t *ps_ref_pic;
1497
1498 ps_ref_pic = ps_dpb_mgr->ps_init_dpb[0][0] + MAX_REF_BUFS;
1499
1500 if(NULL == ps_ref_pic->pu1_buf1)
1501 {
1502 ps_ref_pic = ps_dec->ps_cur_pic;
1503 }
1504 for(u1_i = u1_L1; u1_i < u1_max_ref_idx_l1; u1_i++)
1505 {
1506 *ps_ref_pic_buf_lx = *ps_ref_pic;
1507 ps_ref_pic_buf_lx++;
1508 }
1509 }
1510
1511 ih264d_convert_frm_to_fld_list(
1512 ps_dpb_mgr->ps_init_dpb[1][0] + MAX_REF_BUFS,
1513 &u1_L1, ps_dec, u1_num_short_term_bufs);
1514 ps_ref_pic_buf_lx = ps_dpb_mgr->ps_init_dpb[1][0] + u1_L1;
1515 }
1516
1517 ps_dec->ps_cur_slice->u1_initial_list_size[1] = u1_L1;
1518
1519 /* Initialize the rest of the entries in the */
1520 /* reference list to handle of errors */
1521 {
1522 UWORD8 u1_i;
1523 pic_buffer_t *ps_ref_pic;
1524
1525 ps_ref_pic = ps_dpb_mgr->ps_init_dpb[0][0];
1526
1527 if(NULL == ps_ref_pic->pu1_buf1)
1528 {
1529 ps_ref_pic = ps_dec->ps_cur_pic;
1530 }
1531 for(u1_i = u1_L1; u1_i < u1_max_ref_idx_l1; u1_i++)
1532 {
1533 *ps_ref_pic_buf_lx = *ps_ref_pic;
1534 ps_ref_pic_buf_lx++;
1535 }
1536 }
1537
1538 /* If list0 and list 1 ebtries are same then swap the 0th and 1st entry */
1539 /* of list 1 */
1540 {
1541 struct pic_buffer_t *ps_ref_pic1_buf_l0, *ps_ref_pic1_buf_l1;
1542 struct pic_buffer_t s_ref_pic1_buf_temp;
1543
1544 ps_ref_pic1_buf_l0 = ps_dpb_mgr->ps_init_dpb[0][0];
1545 ps_ref_pic1_buf_l1 = ps_dpb_mgr->ps_init_dpb[1][0];
1546
1547 if((u1_L0 == u1_L1) && (u1_L0 > 1))
1548 {
1549 WORD32 i_index, i_swap;
1550
1551 i_swap = 1;
1552
1553 for(i_index = 0; i_index < u1_L0; i_index++)
1554 {
1555 if((ps_ref_pic1_buf_l0[i_index]).pu1_buf1
1556 != (ps_ref_pic1_buf_l1[i_index]).pu1_buf1)
1557 {
1558 i_swap = 0;
1559 break;
1560 }
1561 }
1562 if(1 == i_swap)
1563 {
1564 memcpy(&s_ref_pic1_buf_temp, &ps_ref_pic1_buf_l1[1],
1565 sizeof(struct pic_buffer_t));
1566 memcpy(&ps_ref_pic1_buf_l1[1], &ps_ref_pic1_buf_l1[0],
1567 sizeof(struct pic_buffer_t));
1568 memcpy(&ps_ref_pic1_buf_l1[0], &s_ref_pic1_buf_temp,
1569 sizeof(struct pic_buffer_t));
1570 }
1571 }
1572 }
1573 }
1574 }
1575
1576
1577
1578 void ih264d_get_implicit_weights(dec_struct_t *ps_dec);
1579
1580 /*!
1581 **************************************************************************
1582 * \if Function name : ih264d_one_to_one \endif
1583 *
1584 * \brief
1585 * Initializes forward and backward refernce lists for B slice decoding.
1586 *
1587 *
1588 * \return
1589 * 0 on Success and Error code otherwise
1590 **************************************************************************
1591 */
ih264d_one_to_one(dec_struct_t * ps_dec,struct pic_buffer_t * ps_col_pic,directmv_t * ps_direct,UWORD8 u1_wd_x,WORD32 u2_sub_mb_ofst,dec_mb_info_t * ps_cur_mb_info)1592 void ih264d_one_to_one(dec_struct_t *ps_dec,
1593 struct pic_buffer_t *ps_col_pic,
1594 directmv_t *ps_direct,
1595 UWORD8 u1_wd_x,
1596 WORD32 u2_sub_mb_ofst,
1597 dec_mb_info_t * ps_cur_mb_info)
1598 {
1599 UWORD8 *pu1_col_zero_flag_start, u1_col_mb_pred_mode, u1_num_blks, u1_sub_mb_num;
1600 UWORD8 u1_init_colzero_flag;
1601 UNUSED(ps_cur_mb_info);
1602 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag + u2_sub_mb_ofst;
1603 u1_col_mb_pred_mode = pu1_col_zero_flag_start[ps_dec->u1_sub_mb_num];
1604 u1_init_colzero_flag = u1_col_mb_pred_mode & 1;
1605 u1_col_mb_pred_mode >>= 6;
1606 ps_direct->u1_vert_mv_scale = ONE_TO_ONE;
1607 ps_direct->u1_col_zeroflag_change = 0;
1608
1609 if(u1_wd_x == MB_SIZE)
1610 {
1611 ps_dec->u1_currB_type = (!!u1_col_mb_pred_mode);
1612 if(u1_col_mb_pred_mode == PRED_16x16)
1613 {
1614 ps_direct->i1_num_partitions = 1;
1615 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst;
1616 ps_direct->i1_submb_num[0] = 0;
1617 ps_direct->i1_partitionsize[0] = PRED_16x16;
1618
1619 return;
1620 }
1621 else if(u1_col_mb_pred_mode < PRED_8x8)
1622 {
1623 ps_direct->i1_num_partitions = 2;
1624 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst;
1625 ps_direct->i1_submb_num[0] = 0;
1626 ps_direct->i1_partitionsize[0] = u1_col_mb_pred_mode;
1627 u1_sub_mb_num = (u1_col_mb_pred_mode == PRED_16x8) ? 8 : 2;
1628 ps_direct->i1_submb_num[1] = u1_sub_mb_num;
1629 ps_direct->i4_mv_indices[1] = u2_sub_mb_ofst
1630 + ps_direct->i1_submb_num[1];
1631 ps_direct->i1_partitionsize[1] = u1_col_mb_pred_mode;
1632 if((pu1_col_zero_flag_start[u1_sub_mb_num] & 1) != u1_init_colzero_flag)
1633 ps_direct->u1_col_zeroflag_change = 1;
1634 return;
1635 }
1636 else
1637 {
1638 u1_num_blks = 4;
1639 }
1640 }
1641 else
1642 {
1643 u1_num_blks = 1;
1644 }
1645
1646 {
1647 const UWORD8 *pu1_top_lt_mb_part_idx;
1648 UWORD8 u1_col_sub_mb_pred_mode, uc_blk, u1_sub_blk, u1_submb_col = 0;
1649 UWORD8 u1_num_sub_blks, uc_direct8x8inf, *pu1_col_zero_flag, u1_sub_mb_num;
1650 const UWORD8 *pu1_num_sub_mb_part =
1651 (const UWORD8 *)gau1_ih264d_num_submb_part;
1652 UWORD8 i1_num_partitions = 0, partition_size;
1653 WORD32 mv_index;
1654 const UWORD8 *pu1_top_lt_sub_mb_idx = gau1_ih264d_submb_indx_mod_sp_drct;
1655
1656 u1_sub_mb_num = ps_dec->u1_sub_mb_num;
1657 uc_direct8x8inf = ps_dec->ps_cur_slice->u1_direct_8x8_inference_flag;
1658 pu1_top_lt_mb_part_idx = gau1_ih264d_top_left_mb_part_indx_mod
1659 + (PRED_8x8 << 1) + 1;
1660
1661 for(uc_blk = 0; uc_blk < u1_num_blks; uc_blk++)
1662 {
1663 partition_size = PRED_8x8;
1664 pu1_top_lt_sub_mb_idx = gau1_ih264d_submb_indx_mod_sp_drct;
1665 if(uc_direct8x8inf == 1)
1666 {
1667 u1_submb_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
1668 mv_index = u2_sub_mb_ofst + u1_submb_col;
1669 u1_num_sub_blks = 1;
1670 }
1671 else
1672 {
1673 /* colMbPart is either 8x8, 8x4, 4x8, 4x4 */
1674 pu1_col_zero_flag = pu1_col_zero_flag_start + u1_sub_mb_num;
1675 u1_col_sub_mb_pred_mode = *pu1_col_zero_flag;
1676 u1_col_sub_mb_pred_mode = (u1_col_sub_mb_pred_mode & 0x30) >> 4;
1677 partition_size = (UWORD8)((u1_col_sub_mb_pred_mode)
1678 | (PRED_8x8 << 2));
1679 mv_index = u2_sub_mb_ofst + u1_sub_mb_num;
1680 pu1_top_lt_sub_mb_idx += (u1_col_sub_mb_pred_mode << 1);
1681 u1_num_sub_blks = pu1_num_sub_mb_part[u1_col_sub_mb_pred_mode];
1682
1683 }
1684
1685 for(u1_sub_blk = 0; u1_sub_blk < u1_num_sub_blks;
1686 u1_sub_blk++, pu1_top_lt_sub_mb_idx++)
1687 {
1688 u1_sub_mb_num += *pu1_top_lt_sub_mb_idx;
1689 mv_index += *pu1_top_lt_sub_mb_idx;
1690 ps_direct->i4_mv_indices[i1_num_partitions] = mv_index;
1691 ps_direct->i1_submb_num[i1_num_partitions] = u1_sub_mb_num;
1692 ps_direct->i1_partitionsize[i1_num_partitions] = partition_size;
1693 i1_num_partitions++;
1694 if(!uc_direct8x8inf)
1695 u1_submb_col = u1_sub_mb_num;
1696 if((pu1_col_zero_flag_start[u1_submb_col] & 1)
1697 != u1_init_colzero_flag)
1698 ps_direct->u1_col_zeroflag_change = 1;
1699 }
1700 u1_sub_mb_num = *pu1_top_lt_mb_part_idx++;
1701 }
1702 ps_direct->i1_num_partitions = i1_num_partitions;
1703 }
1704 }
1705 /*!
1706 **************************************************************************
1707 * \if Function name : ih264d_mbaff_cross_pmbair \endif
1708 *
1709 * \brief
1710 * Initializes forward and backward refernce lists for B slice decoding.
1711 *
1712 *
1713 * \return
1714 * 0 on Success and Error code otherwise
1715 **************************************************************************
1716 */
ih264d_mbaff_cross_pmbair(dec_struct_t * ps_dec,struct pic_buffer_t * ps_col_pic,directmv_t * ps_direct,UWORD8 u1_wd_x,WORD32 u2_sub_mb_ofst,dec_mb_info_t * ps_cur_mb_info)1717 void ih264d_mbaff_cross_pmbair(dec_struct_t *ps_dec,
1718 struct pic_buffer_t *ps_col_pic,
1719 directmv_t *ps_direct,
1720 UWORD8 u1_wd_x,
1721 WORD32 u2_sub_mb_ofst,
1722 dec_mb_info_t * ps_cur_mb_info)
1723 {
1724 UWORD8 *pu1_col_zero_flag_start, *pu1_col_zero_flag, u1_sub_mb_num,
1725 uc_sub_mb_num_col;
1726 UWORD8 *pu1_col_zero_flag_right_half;
1727 WORD32 i4_force_8X8;
1728 UWORD8 u1_num_blks, u1_col_mb_pred_mode, uc_blk, u1_col_sub_mb_pred_mode,
1729 u1_col_sub_mb_pred_mode_rt;
1730 UWORD8 i1_num_partitions = 0, partition_size;
1731
1732 WORD32 mv_index;
1733
1734 UWORD8 u1_num_sub_blks;
1735 UWORD8 u1_is_cur_mb_fld, i;
1736 UWORD8 u1_init_colzero_flag;
1737
1738 u1_is_cur_mb_fld = ps_cur_mb_info->u1_mb_field_decodingflag;
1739 u1_sub_mb_num = ps_dec->u1_sub_mb_num;
1740 ps_direct->u1_col_zeroflag_change = 0;
1741 /*pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag + u2_sub_mb_ofst;
1742 u1_col_mb_pred_mode = pu1_col_zero_flag_start[u1_sub_mb_num];
1743 u1_init_colzero_flag = u1_col_mb_pred_mode & 1;
1744 u1_col_mb_pred_mode >>= 6; */
1745 if(0 == u1_is_cur_mb_fld)
1746 {
1747 ps_direct->u1_vert_mv_scale = FLD_TO_FRM;
1748 if(u1_wd_x == MB_SIZE)
1749 {
1750 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag
1751 + u2_sub_mb_ofst;
1752 u1_col_mb_pred_mode = pu1_col_zero_flag_start[0];
1753 u1_init_colzero_flag = u1_col_mb_pred_mode & 1;
1754 u1_col_mb_pred_mode >>= 6;
1755
1756
1757 if(u1_col_mb_pred_mode & 0x2)
1758 {
1759 ps_dec->u1_currB_type = 1;
1760 if(u1_col_mb_pred_mode == PRED_8x16)
1761 {
1762 ps_direct->i1_num_partitions = 2;
1763 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst;
1764 ps_direct->i1_submb_num[0] = 0;
1765 ps_direct->i1_partitionsize[0] = PRED_8x16;
1766 ps_direct->i4_mv_indices[1] = u2_sub_mb_ofst + 2;
1767 ps_direct->i1_submb_num[1] = 2;
1768 ps_direct->i1_partitionsize[1] = PRED_8x16;
1769 if((pu1_col_zero_flag_start[2] & 1) != u1_init_colzero_flag)
1770 ps_direct->u1_col_zeroflag_change = 1;
1771 }
1772 else
1773 {
1774 pu1_col_zero_flag = pu1_col_zero_flag_start + u1_sub_mb_num;
1775 u1_col_sub_mb_pred_mode = (*pu1_col_zero_flag & 0x10);/* 8x4 or 4x4 mode */
1776
1777 pu1_col_zero_flag_right_half = pu1_col_zero_flag_start
1778 + u1_sub_mb_num + 2;
1779 u1_col_sub_mb_pred_mode_rt =
1780 (*pu1_col_zero_flag_right_half & 0x10);/* 8x4 or 4x4 mode */
1781
1782 i4_force_8X8 = (u1_col_sub_mb_pred_mode)
1783 || (u1_col_sub_mb_pred_mode_rt);
1784 if(i4_force_8X8)
1785 {
1786 u1_num_sub_blks = 2;
1787 partition_size = PRED_8x8;
1788 }
1789 else
1790 {
1791 partition_size = PRED_8x16;
1792 u1_num_sub_blks = 1;
1793 }
1794
1795 for(i = 0; i < 2; i++)
1796 {
1797 for(uc_blk = 0; uc_blk < u1_num_sub_blks; uc_blk++)
1798 {
1799 uc_sub_mb_num_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
1800 uc_sub_mb_num_col &= 0x7;
1801 mv_index = u2_sub_mb_ofst + uc_sub_mb_num_col;
1802
1803 ps_direct->i4_mv_indices[i1_num_partitions] =
1804 mv_index;
1805 ps_direct->i1_submb_num[i1_num_partitions] =
1806 u1_sub_mb_num;
1807 ps_direct->i1_partitionsize[i1_num_partitions] =
1808 partition_size;
1809 i1_num_partitions++;
1810 if((pu1_col_zero_flag_start[uc_sub_mb_num_col] & 1)
1811 != u1_init_colzero_flag)
1812 ps_direct->u1_col_zeroflag_change = 1;
1813 u1_sub_mb_num += 8;
1814 }
1815 u1_sub_mb_num = 2; /* move to second half of Cur MB */
1816 }
1817 ps_direct->i1_num_partitions = i1_num_partitions;
1818 return;
1819 }
1820 }
1821 else
1822 {
1823 ps_direct->i1_num_partitions = 1;
1824 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst;
1825 ps_direct->i1_submb_num[0] = 0;
1826 ps_direct->i1_partitionsize[0] = PRED_16x16;
1827 ps_dec->u1_currB_type = 0;
1828 return;
1829 }
1830 }
1831 else
1832 {
1833 uc_sub_mb_num_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
1834 uc_sub_mb_num_col &= 0x7;
1835
1836 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst + uc_sub_mb_num_col;
1837 ps_direct->i1_submb_num[0] = u1_sub_mb_num;
1838 ps_direct->i1_partitionsize[0] = PRED_8x8;
1839 ps_direct->i1_num_partitions = 1;
1840 }
1841 }
1842 else
1843 {
1844 ps_direct->u1_vert_mv_scale = FRM_TO_FLD;
1845 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag + u2_sub_mb_ofst;
1846 u1_init_colzero_flag = pu1_col_zero_flag_start[0] & 1;
1847
1848 if(u1_wd_x == MB_SIZE)
1849 {
1850 UWORD8 u1_submb_col;
1851 UWORD8 *puc_colZeroFlagStart_bot_mb, uc_colMbPredMode_bot_mb;
1852
1853 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag
1854 + u2_sub_mb_ofst;
1855 u1_col_mb_pred_mode = pu1_col_zero_flag_start[u1_sub_mb_num] >> 6;
1856
1857 puc_colZeroFlagStart_bot_mb = ps_col_pic->pu1_col_zero_flag
1858 + u2_sub_mb_ofst + 16;
1859 uc_colMbPredMode_bot_mb = puc_colZeroFlagStart_bot_mb[8] >> 6;
1860
1861 i4_force_8X8 = (u1_col_mb_pred_mode & 0x2)
1862 || (uc_colMbPredMode_bot_mb & 0x2);
1863 if(i4_force_8X8)
1864 {
1865 u1_num_blks = 2;
1866 partition_size = PRED_8x8;
1867 }
1868 else
1869 {
1870 u1_num_blks = 1;
1871 partition_size = PRED_16x8;
1872 }
1873
1874 ps_dec->u1_currB_type = 1;
1875 /*As this mb is derived from 2 Mbs min no of partitions = 2*/
1876 for(i = 0; i < 2; i++)
1877 {
1878
1879 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag
1880 + u2_sub_mb_ofst;
1881 u1_col_mb_pred_mode = pu1_col_zero_flag_start[u1_sub_mb_num] >> 6;
1882
1883 for(uc_blk = 0; uc_blk < u1_num_blks; uc_blk++)
1884 {
1885 u1_submb_col = (u1_sub_mb_num & 0x7) ? 1 : 0;
1886 u1_submb_col += u1_sub_mb_num;
1887 mv_index = u2_sub_mb_ofst + u1_submb_col;
1888
1889
1890 ps_direct->i4_mv_indices[i1_num_partitions] = mv_index;
1891 ps_direct->i1_submb_num[i1_num_partitions] = u1_sub_mb_num;
1892 ps_direct->i1_partitionsize[i1_num_partitions] =
1893 partition_size;
1894 i1_num_partitions++;
1895 if((pu1_col_zero_flag_start[u1_submb_col] & 1)
1896 != u1_init_colzero_flag)
1897 ps_direct->u1_col_zeroflag_change = 1;
1898 u1_sub_mb_num += 2;
1899 }
1900 u1_sub_mb_num = 8; /* move to second half of Cur MB */
1901 u2_sub_mb_ofst += 16;/* move to next Colocated MB */
1902 }
1903 ps_direct->i1_num_partitions = i1_num_partitions;
1904 return;
1905 }
1906 else
1907 {
1908 uc_sub_mb_num_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
1909 uc_sub_mb_num_col &= 0xb;
1910 u2_sub_mb_ofst += (u1_sub_mb_num >> 3) ? 16 : 0;
1911
1912 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst + uc_sub_mb_num_col;
1913 ps_direct->i1_submb_num[0] = u1_sub_mb_num;
1914 ps_direct->i1_partitionsize[0] = PRED_8x8;
1915 ps_direct->i1_num_partitions = 1;
1916 return;
1917 }
1918 }
1919 }
1920 /*!
1921 **************************************************************************
1922 * \if Function name : ih264d_cal_col_pic \endif
1923 *
1924 * \brief
1925 * Finds the colocated picture.
1926 *
1927 *
1928 * \return
1929 * 0 on Success and Error code otherwise
1930 **************************************************************************
1931 */
ih264d_cal_col_pic(dec_struct_t * ps_dec)1932 WORD32 ih264d_cal_col_pic(dec_struct_t *ps_dec)
1933 {
1934 struct pic_buffer_t* ps_col_pic = ps_dec->ps_col_pic;
1935 UWORD8 uc_curpictype, uc_colpictype;
1936 ps_col_pic = ps_dec->ps_ref_pic_buf_lx[1][0];
1937 uc_curpictype = (ps_dec->ps_cur_pic->u1_picturetype & 0x7);
1938 uc_colpictype = (ps_col_pic->u1_picturetype & 0x7);
1939 if(uc_curpictype == FRM_PIC)
1940 {
1941 if(uc_colpictype == FRM_PIC)
1942 ps_dec->pf_parse_mvdirect = ih264d_one_to_one;
1943 else if(uc_colpictype == COMP_FLD_PAIR)
1944 {
1945 ps_dec->pf_parse_mvdirect = ih264d_fld_to_frm;
1946 if(ps_col_pic->i4_top_field_order_cnt
1947 >= ps_col_pic->i4_bottom_field_order_cnt)
1948 {
1949 struct pic_buffer_t* ps_tempPic = ps_col_pic;
1950 UWORD32 ui_half_num_of_sub_mbs = ((ps_dec->u2_pic_ht
1951 * ps_dec->u2_pic_wd) >> 5);
1952 ps_col_pic = ps_dec->ps_ref_pic_buf_lx[1][MAX_REF_BUFS];
1953 /* memcpy ps_tempPic to ps_col_pic */
1954 *ps_col_pic = *ps_tempPic;
1955 ps_col_pic->pu1_buf1 = ps_tempPic->pu1_buf1
1956 + ps_tempPic->u2_frm_wd_y;
1957 ps_col_pic->pu1_buf2 = ps_tempPic->pu1_buf2
1958 + ps_tempPic->u2_frm_wd_uv;
1959 ps_col_pic->pu1_buf3 = ps_tempPic->pu1_buf3
1960 + ps_tempPic->u2_frm_wd_uv;
1961 ps_col_pic->pu1_col_zero_flag = ps_tempPic->pu1_col_zero_flag
1962 + ui_half_num_of_sub_mbs;
1963 ps_col_pic->ps_mv = ps_tempPic->ps_mv + ui_half_num_of_sub_mbs;
1964
1965
1966 ps_col_pic->u1_pic_type = 0;/*complementary reference field pair-refering as frame */
1967
1968
1969
1970 }
1971 }
1972 else
1973 {
1974 UWORD32 i4_error_code;
1975 i4_error_code = ERROR_DBP_MANAGER_T;
1976 // i4_error_code |= 1<<IVD_CORRUPTEDDATA;
1977 return i4_error_code;
1978 }
1979 }
1980 else if(uc_curpictype == AFRM_PIC)
1981 {
1982 ps_dec->pf_parse_mvdirect = ih264d_fld_to_mbaff;
1983 }
1984 else /* must be a field*/
1985 {
1986 if(uc_colpictype == FRM_PIC)
1987 ps_dec->pf_parse_mvdirect = ih264d_frm_to_fld;
1988 else if(uc_colpictype == AFRM_PIC)
1989 ps_dec->pf_parse_mvdirect = ih264d_mbaff_to_fld;
1990 else
1991 ps_dec->pf_parse_mvdirect = ih264d_one_to_one;
1992 }
1993 ps_dec->ps_col_pic = ps_col_pic;
1994 return OK;
1995 }
1996
1997 /*!
1998 **************************************************************************
1999 * \if Function name : ih264d_frm_to_fld \endif
2000 *
2001 * \brief
2002 * Initializes forward and backward refernce lists for B slice decoding.
2003 *
2004 *
2005 * \return
2006 * 0 on Success and Error code otherwise
2007 **************************************************************************
2008 */
ih264d_frm_to_fld(dec_struct_t * ps_dec,struct pic_buffer_t * ps_col_pic,directmv_t * ps_direct,UWORD8 u1_wd_x,WORD32 u2_sub_mb_ofst,dec_mb_info_t * ps_cur_mb_info)2009 void ih264d_frm_to_fld(dec_struct_t *ps_dec,
2010 struct pic_buffer_t *ps_col_pic,
2011 directmv_t *ps_direct,
2012 UWORD8 u1_wd_x,
2013 WORD32 u2_sub_mb_ofst,
2014 dec_mb_info_t * ps_cur_mb_info)
2015 {
2016 UWORD8 *pu1_col_zero_flag_start, u1_sub_mb_num;
2017 UWORD8 u1_num_blks, u1_col_mb_pred_mode, uc_blk;
2018 UWORD8 i1_num_partitions = 0, partition_size, i;
2019 WORD32 mv_index;
2020 UWORD32 increment;
2021 WORD32 i4_force_8X8;
2022 UNUSED(ps_cur_mb_info);
2023 ps_direct->u1_col_zeroflag_change = 1;
2024 ps_direct->u1_vert_mv_scale = FRM_TO_FLD;
2025 u1_sub_mb_num = ps_dec->u1_sub_mb_num;
2026
2027 /* new calculation specific to this function */
2028 if((ps_col_pic->u1_picturetype & 0x7) == FRM_PIC)
2029 {
2030 UWORD16 u2_frm_wd_in_mbs = ps_dec->u2_frm_wd_in_mbs;
2031 increment = (u2_frm_wd_in_mbs << 4);
2032 /*mbAddrCol = mbAddrCol1 */
2033 u2_sub_mb_ofst = (ps_dec->u2_mbx
2034 + (2 * ps_dec->u2_mby * u2_frm_wd_in_mbs)) << 4;
2035 }
2036 else
2037 increment = 16;
2038
2039 if(u1_wd_x == MB_SIZE)
2040 {
2041 ps_dec->u1_currB_type = 1;
2042
2043 {
2044 UWORD8 *puc_colZeroFlagStart_bot_mb, uc_colMbPredMode_bot_mb;
2045
2046 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag
2047 + u2_sub_mb_ofst;
2048 u1_col_mb_pred_mode = (*pu1_col_zero_flag_start >> 6);
2049
2050 puc_colZeroFlagStart_bot_mb = ps_col_pic->pu1_col_zero_flag
2051 + u2_sub_mb_ofst + increment;
2052 uc_colMbPredMode_bot_mb = (*puc_colZeroFlagStart_bot_mb >> 6);
2053
2054 i4_force_8X8 = (u1_col_mb_pred_mode & 0x2)
2055 || (uc_colMbPredMode_bot_mb & 0x2);
2056
2057 if(i4_force_8X8)
2058 {
2059 u1_num_blks = 2;
2060 partition_size = PRED_8x8;
2061 }
2062 else
2063 {
2064 partition_size = PRED_16x8;
2065 u1_num_blks = 1;
2066 }
2067 }
2068
2069 /*As this mb is derived from 2 Mbs, min no of partitions = 2*/
2070 for(i = 0; i < 2; i++)
2071 {
2072 for(uc_blk = 0; uc_blk < u1_num_blks; uc_blk++)
2073 {
2074 mv_index = u2_sub_mb_ofst + u1_sub_mb_num;
2075 mv_index += (u1_sub_mb_num & 0x7) ? 1 : 0;
2076
2077 ps_direct->i4_mv_indices[i1_num_partitions] = mv_index;
2078 ps_direct->i1_submb_num[i1_num_partitions] = u1_sub_mb_num;
2079 ps_direct->i1_partitionsize[i1_num_partitions] = partition_size;
2080 i1_num_partitions++;
2081
2082 u1_sub_mb_num += 2;
2083 }
2084 u1_sub_mb_num = 8; /* move to second half of Cur MB */
2085 u2_sub_mb_ofst += increment;/* move to next Colocated MB */
2086 }
2087 ps_direct->i1_num_partitions = i1_num_partitions;
2088 return;
2089 }
2090 else
2091 {
2092 UWORD8 u1_sub_mb_num_col;
2093 u1_sub_mb_num_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
2094 u1_sub_mb_num_col &= 0xb;
2095 u2_sub_mb_ofst += (u1_sub_mb_num >> 3) ? increment : 0;
2096
2097 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst + u1_sub_mb_num_col;
2098 ps_direct->i1_submb_num[0] = u1_sub_mb_num;
2099 ps_direct->i1_partitionsize[0] = PRED_8x8;
2100 ps_direct->i1_num_partitions = 1;
2101 return;
2102 }
2103 }
2104 /*!
2105 **************************************************************************
2106 * \if Function name : ih264d_fld_to_frm \endif
2107 *
2108 * \brief
2109 * Initializes forward and backward refernce lists for B slice decoding.
2110 *
2111 *
2112 * \return
2113 * 0 on Success and Error code otherwise
2114 **************************************************************************
2115 */
ih264d_fld_to_frm(dec_struct_t * ps_dec,struct pic_buffer_t * ps_col_pic,directmv_t * ps_direct,UWORD8 u1_wd_x,WORD32 u2_sub_mb_ofst,dec_mb_info_t * ps_cur_mb_info)2116 void ih264d_fld_to_frm(dec_struct_t *ps_dec,
2117 struct pic_buffer_t *ps_col_pic,
2118 directmv_t *ps_direct,
2119 UWORD8 u1_wd_x,
2120 WORD32 u2_sub_mb_ofst,
2121 dec_mb_info_t * ps_cur_mb_info)
2122 {
2123 UWORD8 *pu1_col_zero_flag_start, *pu1_col_zero_flag,
2124 *pu1_col_zero_flag_right_half, u1_sub_mb_num, uc_sub_mb_num_col;
2125 UWORD8 u1_col_mb_pred_mode, uc_blk;
2126 WORD32 i4_force_8X8;
2127
2128 UNUSED(ps_cur_mb_info);
2129 ps_direct->u1_vert_mv_scale = FLD_TO_FRM;
2130 ps_direct->u1_col_zeroflag_change = 1;
2131 /* new calculation specific to this function for u2_sub_mb_ofst*/
2132 u2_sub_mb_ofst = (ps_dec->u2_mbx
2133 + ((ps_dec->u2_mby >> 1) * ps_dec->u2_frm_wd_in_mbs)) << 4;
2134 u2_sub_mb_ofst += ((ps_dec->u2_mby & 1) << 3);
2135
2136 if(u1_wd_x == MB_SIZE)
2137 {
2138 pu1_col_zero_flag_start = ps_col_pic->pu1_col_zero_flag + u2_sub_mb_ofst;
2139 u1_col_mb_pred_mode = (*pu1_col_zero_flag_start >> 6);
2140 ps_dec->u1_currB_type = (!!u1_col_mb_pred_mode);
2141
2142 if(u1_col_mb_pred_mode & 0x2)
2143 {
2144 if(u1_col_mb_pred_mode == PRED_8x16)
2145 {
2146 ps_direct->i1_num_partitions = 2;
2147 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst;
2148 ps_direct->i1_submb_num[0] = 0;
2149 ps_direct->i1_partitionsize[0] = PRED_8x16;
2150 ps_direct->i4_mv_indices[1] = u2_sub_mb_ofst + 2;
2151 ps_direct->i1_submb_num[1] = 2;
2152 ps_direct->i1_partitionsize[1] = PRED_8x16;
2153 }
2154 else
2155 {
2156 UWORD8 i1_num_partitions = 0, partition_size;
2157 UWORD32 mv_index;
2158 UWORD8 u1_num_sub_blks, i, u1_col_sub_mb_pred_mode,
2159 u1_col_sub_mb_pred_mode_rt;
2160
2161 u1_sub_mb_num = ps_dec->u1_sub_mb_num;
2162
2163 pu1_col_zero_flag = pu1_col_zero_flag_start + u1_sub_mb_num;
2164 u1_col_sub_mb_pred_mode = (*pu1_col_zero_flag & 0x10);/* 8x4 or 4x4 mode */
2165
2166 pu1_col_zero_flag_right_half = pu1_col_zero_flag_start + u1_sub_mb_num
2167 + 2;
2168 u1_col_sub_mb_pred_mode_rt = (*pu1_col_zero_flag_right_half
2169 & 0x10);/* 8x4 or 4x4 mode */
2170
2171 i4_force_8X8 = (u1_col_sub_mb_pred_mode)
2172 || (u1_col_sub_mb_pred_mode_rt);
2173 if(i4_force_8X8)
2174 {
2175 u1_num_sub_blks = 2;
2176 partition_size = PRED_8x8;
2177 }
2178 else
2179 {
2180 partition_size = PRED_8x16;
2181 u1_num_sub_blks = 1;
2182 }
2183
2184 for(i = 0; i < 2; i++)
2185 {
2186 for(uc_blk = 0; uc_blk < u1_num_sub_blks; uc_blk++)
2187 {
2188 uc_sub_mb_num_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
2189 uc_sub_mb_num_col &= 0x7;
2190 mv_index = u2_sub_mb_ofst + uc_sub_mb_num_col;
2191
2192 ps_direct->i4_mv_indices[i1_num_partitions] = mv_index;
2193 ps_direct->i1_submb_num[i1_num_partitions] =
2194 u1_sub_mb_num;
2195 ps_direct->i1_partitionsize[i1_num_partitions] =
2196 partition_size;
2197 i1_num_partitions++;
2198 u1_sub_mb_num += 8;
2199 }
2200
2201 u1_sub_mb_num = 2; /* move to second half of Cur MB */
2202
2203 }
2204 ps_direct->i1_num_partitions = i1_num_partitions;
2205 return;
2206 }
2207 }
2208 else
2209 {
2210 ps_direct->i1_num_partitions = 1;
2211 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst;
2212 ps_direct->i1_submb_num[0] = 0;
2213 ps_direct->i1_partitionsize[0] = PRED_16x16;
2214 return;
2215 }
2216 }
2217 else
2218 {
2219 u1_sub_mb_num = ps_dec->u1_sub_mb_num;
2220 uc_sub_mb_num_col = u1_sub_mb_num | (u1_sub_mb_num >> 1);
2221 uc_sub_mb_num_col &= 0x7;
2222
2223 ps_direct->i4_mv_indices[0] = u2_sub_mb_ofst + uc_sub_mb_num_col;
2224 ps_direct->i1_submb_num[0] = u1_sub_mb_num;
2225 ps_direct->i1_partitionsize[0] = PRED_8x8;
2226 ps_direct->i1_num_partitions = 1;
2227 }
2228 }
2229 /*!
2230 **************************************************************************
2231 * \if Function name : ih264d_one_to_one \endif
2232 *
2233 * \brief
2234 * Initializes forward and backward refernce lists for B slice decoding.
2235 *
2236 *
2237 * \return
2238 * 0 on Success and Error code otherwise
2239 **************************************************************************
2240 */
ih264d_mbaff_to_fld(dec_struct_t * ps_dec,struct pic_buffer_t * ps_col_pic,directmv_t * ps_direct,UWORD8 u1_wd_x,WORD32 u2_sub_mb_ofst,dec_mb_info_t * ps_cur_mb_info)2241 void ih264d_mbaff_to_fld(dec_struct_t *ps_dec,
2242 struct pic_buffer_t *ps_col_pic,
2243 directmv_t *ps_direct,
2244 UWORD8 u1_wd_x,
2245 WORD32 u2_sub_mb_ofst,
2246 dec_mb_info_t * ps_cur_mb_info)
2247 {
2248 UWORD8* pu1_col_zero_flag, u1_iscol_mb_fld;
2249 u2_sub_mb_ofst <<= 1;
2250 pu1_col_zero_flag = ps_col_pic->pu1_col_zero_flag + u2_sub_mb_ofst;
2251 u1_iscol_mb_fld = (*pu1_col_zero_flag & 0x2) >> 1;
2252 if(u1_iscol_mb_fld)
2253 {
2254 u2_sub_mb_ofst += (ps_dec->ps_cur_slice->u1_bottom_field_flag << 4);
2255 ih264d_one_to_one(ps_dec, ps_col_pic, ps_direct, u1_wd_x,
2256 u2_sub_mb_ofst, ps_cur_mb_info);
2257 }
2258 else
2259 ih264d_frm_to_fld(ps_dec, ps_col_pic, ps_direct, u1_wd_x,
2260 u2_sub_mb_ofst, ps_cur_mb_info);
2261 }
2262 /*!
2263 **************************************************************************
2264 * \if Function name : ih264d_one_to_one \endif
2265 *
2266 * \brief
2267 * Initializes forward and backward refernce lists for B slice decoding.
2268 *
2269 *
2270 * \return
2271 * 0 on Success and Error code otherwise
2272 **************************************************************************
2273 */
ih264d_fld_to_mbaff(dec_struct_t * ps_dec,struct pic_buffer_t * ps_col_pic,directmv_t * ps_direct,UWORD8 u1_wd_x,WORD32 u2_sub_mb_ofst,dec_mb_info_t * ps_cur_mb_info)2274 void ih264d_fld_to_mbaff(dec_struct_t *ps_dec,
2275 struct pic_buffer_t *ps_col_pic,
2276 directmv_t *ps_direct,
2277 UWORD8 u1_wd_x,
2278 WORD32 u2_sub_mb_ofst,
2279 dec_mb_info_t * ps_cur_mb_info)
2280 {
2281 if((ps_col_pic->u1_picturetype & 0x7) == COMP_FLD_PAIR)
2282 {
2283 /* first calculate the colocated picture which varies with Mb */
2284 UWORD8 u1_is_cur_mb_fld;
2285 u1_is_cur_mb_fld = ps_cur_mb_info->u1_mb_field_decodingflag;
2286 u2_sub_mb_ofst = (u2_sub_mb_ofst & 0xffe0); /* mbaddrCol5 = curmbaddr/2;*/
2287 u2_sub_mb_ofst >>= 1;
2288
2289 ps_col_pic = ps_dec->ps_ref_pic_buf_lx[1][0];
2290 if(u1_is_cur_mb_fld)
2291 {
2292 if(1 - ps_cur_mb_info->u1_topmb)
2293 ps_col_pic = ps_dec->ps_ref_pic_buf_lx[1][MAX_REF_BUFS];
2294
2295 ih264d_one_to_one(ps_dec, ps_col_pic, ps_direct, u1_wd_x,
2296 u2_sub_mb_ofst, ps_cur_mb_info);
2297 }
2298 else
2299 {
2300
2301 if(ABS(ps_col_pic->i4_top_field_order_cnt
2302 - ps_dec->ps_cur_pic->i4_poc) >=
2303 ABS(ps_dec->ps_cur_pic->i4_poc - ps_col_pic->i4_bottom_field_order_cnt))
2304 {
2305 ps_col_pic = ps_dec->ps_ref_pic_buf_lx[1][MAX_REF_BUFS];
2306 }
2307
2308 if(ps_cur_mb_info->u1_topmb == 0)
2309 u2_sub_mb_ofst += 8;
2310 ih264d_mbaff_cross_pmbair(ps_dec, ps_col_pic, ps_direct, u1_wd_x,
2311 u2_sub_mb_ofst, ps_cur_mb_info);
2312 }
2313 ps_dec->ps_col_pic = ps_col_pic;
2314 }
2315 else
2316 {
2317 UWORD8* pu1_col_zero_flag = ps_col_pic->pu1_col_zero_flag
2318 + u2_sub_mb_ofst;
2319 UWORD8 temp, u1_is_cur_mb_fld, u1_iscol_mb_fld;
2320
2321 u1_iscol_mb_fld = (*pu1_col_zero_flag & 0x2) >> 1;
2322 u1_is_cur_mb_fld = ps_cur_mb_info->u1_mb_field_decodingflag;
2323 temp = (u1_iscol_mb_fld ^ u1_is_cur_mb_fld);
2324
2325 if(temp == 0)
2326 ih264d_one_to_one(ps_dec, ps_col_pic, ps_direct, u1_wd_x,
2327 u2_sub_mb_ofst, ps_cur_mb_info);
2328 else
2329 {
2330 u2_sub_mb_ofst &= 0xffef;
2331 if(u1_is_cur_mb_fld == 0)
2332 {
2333 if(ABS(ps_col_pic->i4_top_field_order_cnt
2334 - ps_dec->ps_cur_pic->i4_poc) >=
2335 ABS(ps_dec->ps_cur_pic->i4_poc - ps_col_pic->i4_bottom_field_order_cnt))
2336 {
2337 u2_sub_mb_ofst += 0x10;
2338 }
2339 if(ps_cur_mb_info->u1_topmb == 0)
2340 u2_sub_mb_ofst += 8;
2341 }
2342 ih264d_mbaff_cross_pmbair(ps_dec, ps_col_pic, ps_direct, u1_wd_x,
2343 u2_sub_mb_ofst, ps_cur_mb_info);
2344 }
2345 }
2346 }
2347
2348