1 /******************************************************************************
2 *
3 * Copyright (C) 2022 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *****************************************************************************
18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19 */
20 /**
21 *******************************************************************************
22 * @file
23 * isvcd_parse_eislice.c
24 *
25 * @brief
26 * Contains routines that decode a EI slice type
27 *
28 * @author
29 * Kishore
30 *
31 * @par List of Functions:
32 * - isvcd_parse_islice_data_cabac()
33 * - isvcd_parse_islice_data_cavlc()
34 * - isvcd_parse_imb_cavlc()
35 * - isvcd_parse_eislice()
36 * - isvcd_parse_eislice_data_cabac()
37 * - isvcd_parse_eislice_data_cavlc()
38 * - isvcd_parse_imb_cabac()
39 * - isvcd_parse_islice()
40 *
41 * @remarks
42 * None
43 *
44 *******************************************************************************
45 */
46
47 #include <string.h>
48 #include "ih264_defs.h"
49 #include "ih264d_error_handler.h"
50 #include "ih264d_debug.h"
51 #include "ih264d_bitstrm.h"
52 #include "ih264d_defs.h"
53 #include "ih264d_tables.h"
54 #include "isvcd_structs.h"
55 #include "ih264d_parse_cavlc.h"
56 #include "ih264d_mb_utils.h"
57 #include "ih264d_deblocking.h"
58 #include "ih264d_cabac.h"
59 #include "ih264d_parse_cabac.h"
60 #include "ih264d_parse_mb_header.h"
61 #include "ih264d_parse_slice.h"
62 #include "ih264d_process_pslice.h"
63 #include "isvcd_process_epslice.h"
64 #include "ih264d_process_intra_mb.h"
65 #include "ih264d_parse_islice.h"
66 #include "ih264d_error_handler.h"
67 #include "ih264d_mvpred.h"
68 #include "ih264d_thread_parse_decode.h"
69 #include "ithread.h"
70 #include "ih264d_parse_mb_header.h"
71 #include "assert.h"
72 #include "ih264d_utils.h"
73 #include "ih264d_format_conv.h"
74 #include "ih264d_parse_headers.h"
75 #include "isvcd_parse_headers.h"
76 #include "isvcd_parse_slice.h"
77 #include "isvcd_mb_utils.h"
78
79 void ih264d_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);
80 void isvcd_init_cabac_contexts(UWORD8 u1_slice_type, dec_struct_t *ps_dec);
81
82 /*****************************************************************************/
83 /* */
84 /* Function Name : isvcd_parse_islice_data_cabac */
85 /* */
86 /* Description : This function parses cabac syntax of a inter slice on */
87 /* N MB basis. */
88 /* */
89 /* Inputs : ps_dec */
90 /* sliceparams */
91 /* firstMbInSlice */
92 /* */
93 /* Processing : 1. After parsing syntax for N MBs those N MBs are */
94 /* decoded till the end of slice. */
95 /* */
96 /* Returns : 0 */
97 /* */
98 /* Issues : <List any issues or problems with this function> */
99 /* */
100 /* Revision History: */
101 /* */
102 /* DD MM YYYY Author(s) Changes (Describe the changes made) */
103 /* 24 06 2005 Kishore Draft */
104 /* */
105 /*****************************************************************************/
isvcd_parse_islice_data_cabac(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_slice_params_t * ps_slice,UWORD16 u2_first_mb_in_slice)106 WORD32 isvcd_parse_islice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
107 dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
108 {
109 UWORD8 uc_more_data_flag;
110 UWORD8 u1_num_mbs, u1_mb_idx;
111 dec_mb_info_t *ps_cur_mb_info;
112 deblk_mb_t *ps_cur_deblk_mb;
113 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
114 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
115 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
116 WORD16 i2_cur_mb_addr;
117 UWORD8 u1_mbaff;
118 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
119 WORD32 ret = OK;
120
121 ps_dec->u1_qp = ps_slice->u1_slice_qp;
122 ih264d_update_qp(ps_dec, 0);
123 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
124
125 if(ps_bitstrm->u4_ofst & 0x07)
126 {
127 ps_bitstrm->u4_ofst += 8;
128 ps_bitstrm->u4_ofst &= 0xFFFFFFF8;
129 }
130 ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm);
131 if(ret != OK) return ret;
132 ih264d_init_cabac_contexts(I_SLICE, ps_dec);
133
134 ps_dec->i1_prev_mb_qp_delta = 0;
135
136 /* initializations */
137 u1_mb_idx = ps_dec->u1_mb_idx;
138 u1_num_mbs = u1_mb_idx;
139 uc_more_data_flag = 1;
140 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
141 do
142 {
143 UWORD16 u2_mbx;
144 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
145
146 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
147 {
148 break;
149 }
150
151 {
152 UWORD8 u1_mb_type;
153 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
154 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
155 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
156 ps_cur_mb_info->u1_end_of_slice = 0;
157
158 /***************************************************************/
159 /* Get the required information for decoding of MB */
160 /* mb_x, mb_y , neighbour availablity, */
161 /***************************************************************/
162 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0);
163 u2_mbx = ps_dec->u2_mbx;
164
165 /*********************************************************************/
166 /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */
167 /*********************************************************************/
168 ps_cur_mb_info->u1_tran_form8x8 = 0;
169 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
170
171 /***************************************************************/
172 /* Set the deblocking parameters for this MB */
173 /***************************************************************/
174 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
175 if(ps_dec->u4_app_disable_deblk_frm == 0)
176 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
177 ps_dec->u1_mb_ngbr_availablity,
178 ps_dec->u1_cur_mb_fld_dec_flag);
179
180 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
181
182 /* Macroblock Layer Begins */
183 /* Decode the u1_mb_type */
184 u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec);
185 if(u1_mb_type > 25) return ERROR_MB_TYPE;
186 ps_cur_mb_info->u1_mb_type = u1_mb_type;
187 COPYTHECONTEXT("u1_mb_type", u1_mb_type);
188
189 /* Parse Macroblock Data */
190 if(25 == u1_mb_type)
191 {
192 /* I_PCM_MB */
193 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
194 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
195 if(ret != OK) return ret;
196 ps_cur_deblk_mb->u1_mb_qp = 0;
197 }
198 else
199 {
200 ret = ih264d_parse_imb_cabac(ps_dec, ps_cur_mb_info, u1_mb_type);
201 if(ret != OK) return ret;
202 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
203 }
204
205 if(ps_dec->u1_enable_mb_info)
206 {
207 ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
208 ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
209 }
210 if(u1_mbaff)
211 {
212 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
213 }
214
215 if(ps_cur_mb_info->u1_topmb && u1_mbaff)
216 uc_more_data_flag = 1;
217 else
218 {
219 uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, ps_bitstrm);
220 uc_more_data_flag = !uc_more_data_flag;
221 COPYTHECONTEXT("Decode Sliceterm", !uc_more_data_flag);
222 }
223
224 if(u1_mbaff)
225 {
226 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
227 {
228 return ERROR_EOB_FLUSHBITS_T;
229 }
230 }
231 /* Next macroblock information */
232 i2_cur_mb_addr++;
233 /* Store the colocated information */
234 {
235 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
236 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
237 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
238 (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
239 }
240 /*if num _cores is set to 3,compute bs will be done in another thread*/
241 if(ps_dec->u4_num_cores < 3)
242 {
243 if(ps_dec->u4_app_disable_deblk_frm == 0)
244 ps_svc_lyr_dec->pf_svc_compute_bs(ps_svc_lyr_dec, ps_cur_mb_info,
245 (UWORD16) (u1_num_mbs >> u1_mbaff));
246 }
247 u1_num_mbs++;
248 }
249
250 /****************************************************************/
251 /* Check for End Of Row */
252 /****************************************************************/
253 u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1;
254 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
255 u1_tfr_n_mb =
256 (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
257 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
258
259 if(u1_tfr_n_mb || (!uc_more_data_flag))
260 {
261 if(ps_dec->u1_separate_parse)
262 {
263 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
264 u1_end_of_row);
265 ps_dec->ps_nmb_info += u1_num_mbs;
266 ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
267 }
268 else
269 {
270 if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
271 {
272 ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
273 u1_tfr_n_mb, u1_end_of_row);
274 }
275 else
276 {
277 isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
278 u1_num_mbs_next, u1_tfr_n_mb,
279 u1_end_of_row);
280 }
281 }
282 ps_dec->u2_total_mbs_coded += u1_num_mbs;
283 if(u1_tfr_n_mb) u1_num_mbs = 0;
284 u1_mb_idx = u1_num_mbs;
285 ps_dec->u1_mb_idx = u1_num_mbs;
286 }
287 } while(uc_more_data_flag);
288
289 ps_dec->u4_num_mbs_cur_nmb = 0;
290 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);
291
292 return ret;
293 }
294
295 /*****************************************************************************/
296 /* */
297 /* Function Name : isvcd_parse_islice_data_cavlc */
298 /* */
299 /* Description : This function parses cabac syntax of a inter slice on */
300 /* N MB basis. */
301 /* */
302 /* Inputs : ps_dec */
303 /* sliceparams */
304 /* firstMbInSlice */
305 /* */
306 /* Processing : 1. After parsing syntax for N MBs those N MBs are */
307 /* decoded till the end of slice. */
308 /* */
309 /* Returns : 0 */
310 /* */
311 /* Issues : <List any issues or problems with this function> */
312 /* */
313 /* Revision History: */
314 /* */
315 /* DD MM YYYY Author(s) Changes (Describe the changes made) */
316 /* 24 06 2005 Kishore Draft */
317 /* */
318 /*****************************************************************************/
319
isvcd_parse_islice_data_cavlc(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_slice_params_t * ps_slice,UWORD16 u2_first_mb_in_slice)320 WORD32 isvcd_parse_islice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
321 dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
322 {
323 UWORD8 uc_more_data_flag;
324 UWORD8 u1_num_mbs, u1_mb_idx;
325 dec_mb_info_t *ps_cur_mb_info;
326 deblk_mb_t *ps_cur_deblk_mb;
327 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
328 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
329 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
330 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
331 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
332 WORD16 i2_cur_mb_addr;
333 UWORD8 u1_mbaff;
334 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
335 WORD32 ret = OK;
336
337 ps_dec->u1_qp = ps_slice->u1_slice_qp;
338 ih264d_update_qp(ps_dec, 0);
339 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
340
341 /* initializations */
342 u1_mb_idx = ps_dec->u1_mb_idx;
343 u1_num_mbs = u1_mb_idx;
344
345 uc_more_data_flag = 1;
346 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
347 do
348 {
349 UWORD8 u1_mb_type;
350 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
351 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
352 {
353 break;
354 }
355
356 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
357 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
358 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
359 ps_cur_mb_info->u1_end_of_slice = 0;
360
361 /***************************************************************/
362 /* Get the required information for decoding of MB */
363 /* mb_x, mb_y , neighbour availablity, */
364 /***************************************************************/
365 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0);
366
367 /***************************************************************/
368 /* Set the deblocking parameters for this MB */
369 /***************************************************************/
370 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
371 if(ps_dec->u4_app_disable_deblk_frm == 0)
372 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
373 ps_dec->u1_mb_ngbr_availablity,
374 ps_dec->u1_cur_mb_fld_dec_flag);
375
376 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
377
378 /**************************************************************/
379 /* Macroblock Layer Begins, Decode the u1_mb_type */
380 /**************************************************************/
381 /* Inlined ih264d_uev */
382 {
383 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
384 UWORD32 u4_word, u4_ldz, u4_temp;
385
386 /***************************************************************/
387 /* Find leading zeros in next 32 bits */
388 /***************************************************************/
389 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
390 u4_ldz = CLZ(u4_word);
391 /* Flush the ps_bitstrm */
392 u4_bitstream_offset += (u4_ldz + 1);
393 /* Read the suffix from the ps_bitstrm */
394 u4_word = 0;
395 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
396 *pu4_bitstrm_ofst = u4_bitstream_offset;
397 u4_temp = ((1 << u4_ldz) + u4_word - 1);
398 if(u4_temp > 25) return ERROR_MB_TYPE;
399 u1_mb_type = u4_temp;
400 }
401 /* Inlined ih264d_uev */
402 ps_cur_mb_info->u1_mb_type = u1_mb_type;
403 COPYTHECONTEXT("u1_mb_type", u1_mb_type);
404
405 /**************************************************************/
406 /* Parse Macroblock data */
407 /**************************************************************/
408 if(25 == u1_mb_type)
409 {
410 /* I_PCM_MB */
411 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
412 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
413 if(ret != OK) return ret;
414 ps_cur_deblk_mb->u1_mb_qp = 0;
415 }
416 else
417 {
418 ret = ih264d_parse_imb_cavlc(ps_dec, ps_cur_mb_info, u1_num_mbs, u1_mb_type);
419 if(ret != OK) return ret;
420 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
421 }
422 if(ps_dec->u1_enable_mb_info)
423 {
424 ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
425 ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
426 }
427 uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
428 if(u1_mbaff)
429 {
430 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
431 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
432 {
433 return ERROR_EOB_FLUSHBITS_T;
434 }
435 }
436 /**************************************************************/
437 /* Get next Macroblock address */
438 /**************************************************************/
439 i2_cur_mb_addr++;
440 /* Store the colocated information */
441 {
442 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
443 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
444 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
445 (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
446 }
447
448 /*if num _cores is set to 3,compute bs will be done in another thread*/
449 if(ps_dec->u4_num_cores < 3)
450 {
451 if(ps_dec->u4_app_disable_deblk_frm == 0)
452 ps_svc_lyr_dec->pf_svc_compute_bs(ps_svc_lyr_dec, ps_cur_mb_info,
453 (UWORD16) (u1_num_mbs >> u1_mbaff));
454 }
455 u1_num_mbs++;
456
457 /****************************************************************/
458 /* Check for End Of Row */
459 /****************************************************************/
460 u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
461 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
462 u1_tfr_n_mb =
463 (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
464 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
465
466 if(u1_tfr_n_mb || (!uc_more_data_flag))
467 {
468 if(ps_dec->u1_separate_parse)
469 {
470 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
471 u1_end_of_row);
472 ps_dec->ps_nmb_info += u1_num_mbs;
473 ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
474 }
475 else
476 {
477 if(ps_svc_lyr_dec->u1_layer_identifier == TARGET_LAYER)
478 {
479 ih264d_decode_recon_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next,
480 u1_tfr_n_mb, u1_end_of_row);
481 }
482 else
483 {
484 isvcd_decode_recon_tfr_nmb_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
485 u1_num_mbs_next, u1_tfr_n_mb,
486 u1_end_of_row);
487 }
488 }
489 ps_dec->u2_total_mbs_coded += u1_num_mbs;
490 if(u1_tfr_n_mb) u1_num_mbs = 0;
491 u1_mb_idx = u1_num_mbs;
492 ps_dec->u1_mb_idx = u1_num_mbs;
493 }
494 } while(uc_more_data_flag);
495
496 ps_dec->u4_num_mbs_cur_nmb = 0;
497 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);
498
499 return ret;
500 }
501 /*!
502 **************************************************************************
503 * \if Function name : ParseIMb \endif
504 *
505 * \brief
506 * This function parses CAVLC syntax of a I MB. If 16x16 Luma DC transform
507 * is also done here. Transformed Luma DC values are copied in their
508 * 0th pixel location of corrosponding CoeffBlock.
509 *
510 * \return
511 * 0 on Success and Error code otherwise
512 **************************************************************************
513 */
isvcd_parse_imb_cavlc(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_mb_info_t * ps_cur_mb_info,dec_svc_mb_info_t * ps_svc_cur_mb_info,UWORD8 u1_mb_num,UWORD8 u1_mb_type)514 WORD32 isvcd_parse_imb_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
515 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_num,
516 UWORD8 u1_mb_type)
517 {
518 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
519 WORD32 i4_delta_qp;
520 UWORD32 u4_temp;
521 UWORD32 ui_is_top_mb_available;
522 UWORD32 ui_is_left_mb_available;
523 UWORD32 u4_cbp;
524 UWORD32 u4_offset;
525 UWORD32 *pu4_bitstrm_buf;
526 WORD32 ret;
527 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
528 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
529 UNUSED(u1_mb_num);
530
531 ps_cur_mb_info->u1_tran_form8x8 = 0;
532 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
533 ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
534 u4_temp = ps_dec->u1_mb_ngbr_availablity;
535 ui_is_top_mb_available = BOOLEAN(u4_temp & TOP_MB_AVAILABLE_MASK);
536 ui_is_left_mb_available = BOOLEAN(u4_temp & LEFT_MB_AVAILABLE_MASK);
537 pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
538
539 ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB;
540 if(!ps_svc_cur_mb_info->u1_base_mode_flag)
541 {
542 if(u1_mb_type == I_4x4_MB)
543 {
544 ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
545 u4_offset = 0;
546
547 /*--------------------------------------------------------------------*/
548 /* Read transform_size_8x8_flag if present */
549 /*--------------------------------------------------------------------*/
550 if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag)
551 {
552 ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm);
553 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
554 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
555 }
556
557 /*--------------------------------------------------------------------*/
558 /* Read the IntraPrediction modes for LUMA */
559 /*--------------------------------------------------------------------*/
560 if(!ps_cur_mb_info->u1_tran_form8x8)
561 {
562 UWORD8 *pu1_temp;
563 ih264d_read_intra_pred_modes(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
564 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16),
565 ps_cur_mb_info->u1_tran_form8x8);
566 pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
567 pu1_temp += 32;
568 ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
569 }
570 else
571 {
572 UWORD8 *pu1_temp;
573 ih264d_read_intra_pred_modes(ps_dec, ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
574 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4),
575 ps_cur_mb_info->u1_tran_form8x8);
576 pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
577 pu1_temp += 8;
578 ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
579 }
580 /*--------------------------------------------------------------------*/
581 /* Read the IntraPrediction mode for CHROMA */
582 /*--------------------------------------------------------------------*/
583 /* Inlined ih264d_uev */
584 {
585 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
586 UWORD32 u4_word, u4_ldz, u4_temp;
587
588 /***************************************************************/
589 /* Find leading zeros in next 32 bits */
590 /***************************************************************/
591 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
592 u4_ldz = CLZ(u4_word);
593 /* Flush the ps_bitstrm */
594 u4_bitstream_offset += (u4_ldz + 1);
595 /* Read the suffix from the ps_bitstrm */
596 u4_word = 0;
597 if(u4_ldz)
598 {
599 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
600 }
601 *pu4_bitstrm_ofst = u4_bitstream_offset;
602 u4_temp = ((1 << u4_ldz) + u4_word - 1);
603 if(u4_temp > 3)
604 {
605 return ERROR_CHROMA_PRED_MODE;
606 }
607 ps_cur_mb_info->u1_chroma_pred_mode = u4_temp;
608 COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode);
609 }
610 /*--------------------------------------------------------------------*/
611 /* Read the Coded block pattern */
612 /*--------------------------------------------------------------------*/
613 {
614 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
615 UWORD32 u4_word, u4_ldz;
616
617 /***************************************************************/
618 /* Find leading zeros in next 32 bits */
619 /***************************************************************/
620 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
621 u4_ldz = CLZ(u4_word);
622 /* Flush the ps_bitstrm */
623 u4_bitstream_offset += (u4_ldz + 1);
624 /* Read the suffix from the ps_bitstrm */
625 u4_word = 0;
626 if(u4_ldz)
627 {
628 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
629 }
630 *pu4_bitstrm_ofst = u4_bitstream_offset;
631 u4_cbp = ((1 << u4_ldz) + u4_word - 1);
632 }
633 if(u4_cbp > 47)
634 {
635 return ERROR_CBP;
636 }
637
638 u4_cbp = gau1_ih264d_cbp_table[u4_cbp][0];
639 COPYTHECONTEXT("coded_block_pattern", u4_cbp);
640 ps_cur_mb_info->u1_cbp = u4_cbp;
641
642 /*--------------------------------------------------------------------*/
643 /* Read mb_qp_delta */
644 /*--------------------------------------------------------------------*/
645 if(ps_cur_mb_info->u1_cbp)
646 {
647 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
648 UWORD32 u4_word, u4_ldz, u4_abs_val;
649
650 /***************************************************************/
651 /* Find leading zeros in next 32 bits */
652 /***************************************************************/
653 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
654 u4_ldz = CLZ(u4_word);
655
656 /* Flush the ps_bitstrm */
657 u4_bitstream_offset += (u4_ldz + 1);
658
659 /* Read the suffix from the ps_bitstrm */
660 u4_word = 0;
661 if(u4_ldz)
662 {
663 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
664 }
665
666 *pu4_bitstrm_ofst = u4_bitstream_offset;
667 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
668
669 if(u4_word & 0x1)
670 {
671 i4_delta_qp = (-(WORD32) u4_abs_val);
672 }
673 else
674 {
675 i4_delta_qp = (u4_abs_val);
676 }
677
678 if((i4_delta_qp < -26) || (i4_delta_qp > 25))
679 {
680 return ERROR_INV_RANGE_QP_T;
681 }
682
683 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
684 if(i4_delta_qp != 0)
685 {
686 ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp);
687 if(ret != OK) return ret;
688 }
689 }
690 }
691 else
692 {
693 u4_offset = 1;
694 ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;
695 /*-------------------------------------------------------------------*/
696 /* Read the IntraPrediction mode for CHROMA */
697 /*-------------------------------------------------------------------*/
698 {
699 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
700 UWORD32 u4_word, u4_ldz;
701
702 /***************************************************************/
703 /* Find leading zeros in next 32 bits */
704 /***************************************************************/
705 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
706 u4_ldz = CLZ(u4_word);
707 /* Flush the ps_bitstrm */
708 u4_bitstream_offset += (u4_ldz + 1);
709 /* Read the suffix from the ps_bitstrm */
710 u4_word = 0;
711 if(u4_ldz)
712 {
713 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
714 }
715 *pu4_bitstrm_ofst = u4_bitstream_offset;
716 u4_temp = ((1 << u4_ldz) + u4_word - 1);
717
718 /* Inlined ih264d_uev */
719 if(u4_temp > 3)
720 {
721 return ERROR_CHROMA_PRED_MODE;
722 }
723 ps_cur_mb_info->u1_chroma_pred_mode = u4_temp;
724 COPYTHECONTEXT("intra_chroma_pred_mode", ps_cur_mb_info->u1_chroma_pred_mode);
725 }
726 /*-------------------------------------------------------------------*/
727 /* Read the Coded block pattern */
728 /*-------------------------------------------------------------------*/
729 u4_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2];
730 ps_cur_mb_info->u1_cbp = u4_cbp;
731
732 /*-------------------------------------------------------------------*/
733 /* Read mb_qp_delta */
734 /*-------------------------------------------------------------------*/
735 {
736 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
737 UWORD32 u4_word, u4_ldz, u4_abs_val;
738
739 /***************************************************************/
740 /* Find leading zeros in next 32 bits */
741 /***************************************************************/
742 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
743 u4_ldz = CLZ(u4_word);
744
745 /* Flush the ps_bitstrm */
746 u4_bitstream_offset += (u4_ldz + 1);
747
748 /* Read the suffix from the ps_bitstrm */
749 u4_word = 0;
750 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
751
752 *pu4_bitstrm_ofst = u4_bitstream_offset;
753 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
754
755 if(u4_word & 0x1)
756 i4_delta_qp = (-(WORD32) u4_abs_val);
757 else
758 i4_delta_qp = (u4_abs_val);
759
760 if((i4_delta_qp < -26) || (i4_delta_qp > 25)) return ERROR_INV_RANGE_QP_T;
761 }
762 /* inlinined ih264d_sev */
763 COPYTHECONTEXT("Delta quant", i1_delta_qp);
764
765 if(i4_delta_qp != 0)
766 {
767 ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp);
768 if(ret != OK) return ret;
769 }
770
771 {
772 WORD16 i_scaleFactor;
773 UWORD32 ui_N = 0;
774 WORD16 *pi2_scale_matrix_ptr;
775 /*******************************************************************/
776 /* for luma DC coefficients the scaling is done during the parsing */
777 /* to preserve the precision */
778 /*******************************************************************/
779 if(ps_dec->s_high_profile.u1_scaling_present)
780 {
781 pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0];
782 }
783 else
784 {
785 i_scaleFactor = 16;
786 pi2_scale_matrix_ptr = &i_scaleFactor;
787 }
788
789 /*---------------------------------------------------------------*/
790 /* Decode DC coefficients */
791 /*---------------------------------------------------------------*/
792 /*---------------------------------------------------------------*/
793 /* Calculation of N */
794 /*---------------------------------------------------------------*/
795 if(ui_is_left_mb_available)
796 {
797 if(ui_is_top_mb_available)
798 {
799 ui_N = ((ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0] +
800 ps_dec->pu1_left_nnz_y[0] + 1) >>
801 1);
802 }
803 else
804 {
805 ui_N = ps_dec->pu1_left_nnz_y[0];
806 }
807 }
808 else if(ui_is_top_mb_available)
809 {
810 ui_N = ps_cur_mb_info->ps_top_mb->pu1_nnz_y[0];
811 }
812
813 {
814 WORD16 pi2_dc_coef[16] = {0};
815 WORD32 pi4_tmp[16] = {0};
816 tu_sblk4x4_coeff_data_t *ps_tu_4x4 =
817 (tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data;
818 WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data;
819 UWORD32 u4_num_coeff;
820 ps_tu_4x4->u2_sig_coeff_map = 0;
821 ret = ps_dec->pf_cavlc_parse4x4coeff[(ui_N > 7)](pi2_dc_coef, 0, ui_N, ps_dec,
822 &u4_num_coeff);
823 if(ret != OK) return ret;
824
825 if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
826 if(ps_tu_4x4->u2_sig_coeff_map)
827 {
828 memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef));
829 ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef,
830 ps_dec->pu1_inv_scan);
831
832 PROFILE_DISABLE_IQ_IT_RECON()
833 ps_dec->pf_ihadamard_scaling_4x4(
834 pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y,
835 (UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp);
836 pi2_coeff_block += 16;
837 ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block;
838 SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0);
839 }
840 }
841 }
842 }
843 }
844 else
845 {
846 ps_cur_mb_info->u1_tran_form8x8 = 0;
847 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
848 u4_offset = 0;
849 /*--------------------------------------------------------------------*/
850 /* Read the Coded block pattern */
851 /*--------------------------------------------------------------------*/
852 {
853 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
854 UWORD32 u4_word, u4_ldz;
855
856 /***************************************************************/
857 /* Find leading zeros in next 32 bits */
858 /***************************************************************/
859 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
860 u4_ldz = CLZ(u4_word);
861 /* Flush the ps_bitstrm */
862 u4_bitstream_offset += (u4_ldz + 1);
863 /* Read the suffix from the ps_bitstrm */
864 u4_word = 0;
865 if(u4_ldz)
866 {
867 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
868 }
869 *pu4_bitstrm_ofst = u4_bitstream_offset;
870 u4_cbp = ((1 << u4_ldz) + u4_word - 1);
871 }
872 if(u4_cbp > 47)
873 {
874 return ERROR_CBP;
875 }
876
877 /* inter cbp table to be used for base mode flag*/
878 u4_cbp = gau1_ih264d_cbp_table[u4_cbp][1];
879 COPYTHECONTEXT("coded_block_pattern", u4_cbp);
880 ps_cur_mb_info->u1_cbp = u4_cbp;
881 ps_cur_mb_info->u1_tran_form8x8 = 0;
882 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
883
884 /*--------------------------------------------------------------------*/
885 /* Read transform_size_8x8_flag if present */
886 /*--------------------------------------------------------------------*/
887 if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (ps_cur_mb_info->u1_cbp & 0xf))
888 {
889 ps_cur_mb_info->u1_tran_form8x8 = ih264d_get_bit_h264(ps_bitstrm);
890 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
891 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
892 }
893 /*--------------------------------------------------------------------*/
894 /* Read mb_qp_delta */
895 /*--------------------------------------------------------------------*/
896 if(ps_cur_mb_info->u1_cbp)
897 {
898 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
899 UWORD32 u4_word, u4_ldz, u4_abs_val;
900
901 /***************************************************************/
902 /* Find leading zeros in next 32 bits */
903 /***************************************************************/
904 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
905 u4_ldz = CLZ(u4_word);
906
907 /* Flush the ps_bitstrm */
908 u4_bitstream_offset += (u4_ldz + 1);
909
910 /* Read the suffix from the ps_bitstrm */
911 u4_word = 0;
912 if(u4_ldz)
913 {
914 GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
915 }
916
917 *pu4_bitstrm_ofst = u4_bitstream_offset;
918 u4_abs_val = ((1 << u4_ldz) + u4_word) >> 1;
919
920 if(u4_word & 0x1)
921 {
922 i4_delta_qp = (-(WORD32) u4_abs_val);
923 }
924 else
925 {
926 i4_delta_qp = (u4_abs_val);
927 }
928
929 if((i4_delta_qp < -26) || (i4_delta_qp > 25))
930 {
931 return ERROR_INV_RANGE_QP_T;
932 }
933
934 COPYTHECONTEXT("mb_qp_delta", i4_delta_qp);
935 if(i4_delta_qp != 0)
936 {
937 ret = ih264d_update_qp(ps_dec, (WORD8) i4_delta_qp);
938 if(ret != OK) return ret;
939 }
940 }
941 }
942 if(u4_cbp)
943 {
944 ret = ih264d_parse_residual4x4_cavlc(ps_dec, ps_cur_mb_info, (UWORD8) u4_offset);
945 if(ret != OK) return ret;
946 if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
947
948 /* Store Left Mb NNZ and TOP chroma NNZ */
949 }
950 else
951 {
952 ps_cur_mb_info->u1_qp_div6 = ps_dec->u1_qp_y_div6;
953 ps_cur_mb_info->u1_qpc_div6 = ps_dec->u1_qp_u_div6;
954 ps_cur_mb_info->u1_qpcr_div6 = ps_dec->u1_qp_v_div6;
955 ps_cur_mb_info->u1_qp_rem6 = ps_dec->u1_qp_y_rem6;
956 ps_cur_mb_info->u1_qpc_rem6 = ps_dec->u1_qp_u_rem6;
957 ps_cur_mb_info->u1_qpcr_rem6 = ps_dec->u1_qp_v_rem6;
958 ih264d_update_nnz_for_skipmb(ps_dec, ps_cur_mb_info, CAVLC);
959 }
960
961 return OK;
962 }
963
964 /*!
965 **************************************************************************
966 * \if Function name : ih264d_decode_eislice \endif
967 *
968 * \brief
969 * Decodes an EI Slice
970 *
971 *
972 * \return
973 * 0 on Success and Error code otherwise
974 **************************************************************************
975 */
isvcd_parse_eislice(svc_dec_lyr_struct_t * ps_svc_lyr_dec,UWORD16 u2_first_mb_in_slice)976 WORD32 isvcd_parse_eislice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
977 {
978 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
979 WORD32 i_status = OK;
980 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
981 dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
982 dec_bit_stream_t *ps_bitstrm = ps_dec->ps_bitstrm;
983 dec_seq_params_t *ps_seq;
984 dec_svc_seq_params_t *ps_subset_seq;
985 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
986 dec_subset_seq_params_t *ps_sps_svc_ext = NULL;
987 dec_nal_unit_svc_ext_params_t *ps_nal_svc_ext = NULL;
988 UWORD32 u4_temp;
989 WORD32 i_temp;
990 WORD32 ret;
991 UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
992 UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
993
994 ps_nal_svc_ext = ps_svc_lyr_dec->ps_nal_svc_ext;
995 ps_seq = ps_dec->ps_cur_sps;
996 ps_subset_seq =
997 &ps_svc_lyr_dec->ps_subset_sps[MAX_NUM_SEQ_PARAMS + ps_seq->u1_seq_parameter_set_id];
998 ps_sps_svc_ext = &ps_subset_seq->s_sps_svc_ext;
999 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1000
1001 if(0 == ps_svc_lyr_dec->ps_nal_svc_ext->u1_quality_id)
1002 {
1003 /*--------------------------------------------------------------------*/
1004 /* Read remaining contents of the slice header */
1005 /*--------------------------------------------------------------------*/
1006 /* dec_ref_pic_marking function */
1007 /* G050 */
1008 if(ps_slice->u1_nal_ref_idc != 0)
1009 {
1010 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
1011 {
1012 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1013 dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
1014 UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
1015
1016 ps_pps->ps_sps = ps_dec->ps_cur_sps;
1017 if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
1018 ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
1019
1020 i_temp = ih264d_read_mmco_commands(ps_dec);
1021
1022 ps_pps->ps_sps = ps_sps_tmp;
1023 ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
1024 if(i_temp < 0)
1025 {
1026 return ERROR_DBP_MANAGER_T;
1027 }
1028 ps_dec->u4_bitoffset = i_temp;
1029 }
1030 else
1031 ps_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
1032
1033 if(!ps_sps_svc_ext->u1_slice_header_restriction_flag)
1034 {
1035 ps_svc_slice_params->u1_store_ref_base_pic_flag = ih264d_get_bit_h264(ps_bitstrm);
1036 COPYTHECONTEXT("SPS_SVC_EXT: u1_store_ref_base_pic_flag",
1037 ps_svc_slice_params->u1_store_ref_base_pic_flag);
1038
1039 if(0 != ps_svc_slice_params->u1_store_ref_base_pic_flag)
1040 {
1041 return NOT_OK;
1042 }
1043 if(((1 == ps_nal_svc_ext->u1_use_ref_base_pic_flag) ||
1044 (1 == ps_svc_slice_params->u1_store_ref_base_pic_flag)) &&
1045 (!ps_nal_svc_ext->u1_idr_flag))
1046 {
1047 i_status = isvcd_dec_ref_base_pic_marking(
1048 &ps_svc_slice_params->s_ref_base_pic_marking_svc_ext, ps_bitstrm);
1049 if(i_status != OK)
1050 {
1051 return i_status;
1052 }
1053 }
1054 }
1055 }
1056 }
1057
1058 {
1059 /* G050 */
1060 /* Read slice_qp_delta */
1061 WORD64 i8_temp =
1062 (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1063 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
1064 ps_slice->u1_slice_qp = (UWORD8) i8_temp;
1065 COPYTHECONTEXT("Slice Header SVC ext: slice_qp_delta",
1066 ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp);
1067 }
1068
1069 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
1070 {
1071 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1072 COPYTHECONTEXT("Slice Header SVC ext: disable_deblocking_filter_idc", u4_temp);
1073
1074 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
1075 {
1076 return ERROR_INV_SLICE_HDR_T;
1077 }
1078 ps_slice->u1_disable_dblk_filter_idc = u4_temp;
1079 if(u4_temp != 1)
1080 {
1081 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
1082 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
1083 {
1084 return ERROR_INV_SLICE_HDR_T;
1085 }
1086 ps_slice->i1_slice_alpha_c0_offset = i_temp;
1087 COPYTHECONTEXT("Slice Header SVC ext: slice_alpha_c0_offset_div2",
1088 ps_slice->i1_slice_alpha_c0_offset >> 1);
1089
1090 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
1091 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
1092 {
1093 return ERROR_INV_SLICE_HDR_T;
1094 }
1095 ps_slice->i1_slice_beta_offset = i_temp;
1096 COPYTHECONTEXT("Slice Header SVC ext: slice_beta_offset_div2",
1097 ps_slice->i1_slice_beta_offset >> 1);
1098 }
1099 else
1100 {
1101 ps_slice->i1_slice_alpha_c0_offset = 0;
1102 ps_slice->i1_slice_beta_offset = 0;
1103 }
1104 }
1105 else
1106 {
1107 ps_slice->u1_disable_dblk_filter_idc = 0;
1108 ps_slice->i1_slice_alpha_c0_offset = 0;
1109 ps_slice->i1_slice_beta_offset = 0;
1110 }
1111
1112 /* add the remaining part of the code for svc extension from reference */
1113 ret = isvcd_set_default_slice_header_ext(ps_svc_lyr_dec);
1114 if(ret != OK)
1115 {
1116 return ERROR_INV_SLICE_HDR_T;
1117 }
1118
1119 ret = isvcd_parse_slice_header(ps_svc_lyr_dec);
1120 if(ret != OK)
1121 {
1122 return ERROR_INV_SLICE_HDR_T;
1123 }
1124
1125 /* Initialization to check if number of motion vector per 2 Mbs */
1126 /* are exceeding the range or not */
1127 ps_dec->u2_mv_2mb[0] = 0;
1128 ps_dec->u2_mv_2mb[1] = 0;
1129
1130 ret = isvcd_parse_interlayer_resamp_func_init(ps_svc_lyr_dec, u2_first_mb_in_slice);
1131 if(ret != OK)
1132 {
1133 return ERROR_CORRUPTED_SLICE;
1134 }
1135 /*set slice header cone to 2 ,to indicate correct header*/
1136 ps_dec->u1_slice_header_done = 2;
1137
1138 if(!ps_svc_slice_params->u1_slice_skip_flag)
1139 {
1140 if(ps_pps->u1_entropy_coding_mode)
1141 {
1142 SWITCHOFFTRACE;
1143 SWITCHONTRACECABAC;
1144 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1145 {
1146 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
1147 }
1148 else
1149 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
1150
1151 ret = isvcd_parse_eislice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
1152 if(ret != OK) return ret;
1153 SWITCHONTRACE;
1154 SWITCHOFFTRACECABAC;
1155 }
1156 else
1157 {
1158 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1159 {
1160 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
1161 }
1162 else
1163 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
1164 ret = isvcd_parse_eislice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
1165 if(ret != OK) return ret;
1166 }
1167 }
1168 else
1169 {
1170 return ERROR_FEATURE_UNAVAIL;
1171 }
1172
1173 return OK;
1174 }
1175
1176 /*****************************************************************************/
1177 /* */
1178 /* Function Name : isvcd_parse_eislice_data_cabac */
1179 /* */
1180 /* Description : This function parses cabac syntax of a inter slice on */
1181 /* N MB basis. */
1182 /* */
1183 /* Inputs : ps_dec */
1184 /* sliceparams */
1185 /* firstMbInSlice */
1186 /* */
1187 /* Processing : 1. After parsing syntax for N MBs those N MBs are */
1188 /* decoded till the end of slice. */
1189 /* */
1190 /* Returns : 0 */
1191 /* */
1192 /* Issues : <List any issues or problems with this function> */
1193 /* */
1194 /* Revision History: */
1195 /* */
1196 /* DD MM YYYY Author(s) Changes (Describe the changes made) */
1197 /* 24 06 2005 Kishore Draft */
1198 /* */
1199 /*****************************************************************************/
isvcd_parse_eislice_data_cabac(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_slice_params_t * ps_slice,UWORD16 u2_first_mb_in_slice)1200 WORD32 isvcd_parse_eislice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
1201 dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
1202 {
1203 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1204 UWORD8 uc_more_data_flag;
1205 UWORD8 u1_num_mbs, u1_mb_idx;
1206 dec_mb_info_t *ps_cur_mb_info;
1207 dec_svc_mb_info_t *ps_svc_cur_mb_info;
1208 deblk_mb_t *ps_cur_deblk_mb;
1209 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
1210 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
1211 WORD16 i2_cur_mb_addr;
1212 UWORD8 u1_mbaff;
1213 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
1214 WORD32 ret = OK;
1215 decoding_envirnoment_t *ps_cab_env;
1216 UWORD8 *pu1_cur_svc_base_mode_flag;
1217 UWORD8 u1_left_svc_base_mode_flag;
1218 UWORD8 u1_top_svc_base_mode_flag;
1219 UWORD32 u4_a, u4_b, u4_ctxt_inc;
1220 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
1221
1222 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1223 ps_dec->u1_qp = ps_slice->u1_slice_qp;
1224 ih264d_update_qp(ps_dec, 0);
1225 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
1226
1227 if(ps_bitstrm->u4_ofst & 0x07)
1228 {
1229 ps_bitstrm->u4_ofst += 8;
1230 ps_bitstrm->u4_ofst &= 0xFFFFFFF8;
1231 }
1232 ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm);
1233 if(ret != OK) return ret;
1234 isvcd_init_cabac_contexts(I_SLICE, ps_dec);
1235 ps_dec->i1_prev_mb_qp_delta = 0;
1236 ps_cab_env = &ps_dec->s_cab_dec_env;
1237 /* initializations */
1238 u1_mb_idx = ps_dec->u1_mb_idx;
1239 u1_num_mbs = u1_mb_idx;
1240 uc_more_data_flag = 1;
1241 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
1242 do
1243 {
1244 UWORD16 u2_mbx;
1245 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
1246 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
1247 {
1248 break;
1249 }
1250
1251 {
1252 UWORD8 u1_mb_type;
1253 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
1254 ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
1255 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
1256 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
1257 ps_cur_mb_info->u1_end_of_slice = 0;
1258 /***************************************************************/
1259 /* Get the required information for decoding of MB */
1260 /* mb_x, mb_y , neighbour availablity, */
1261 /***************************************************************/
1262 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0);
1263 u2_mbx = ps_dec->u2_mbx;
1264 ps_svc_cur_mb_info->u1_crop_window_flag =
1265 *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
1266 (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
1267 /*********************************************************************/
1268 /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */
1269 /*********************************************************************/
1270 ps_cur_mb_info->u1_tran_form8x8 = 0;
1271 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1272 /***************************************************************/
1273 /* Set the deblocking parameters for this MB */
1274 /***************************************************************/
1275 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
1276 if(ps_dec->u4_app_disable_deblk_frm == 0)
1277 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
1278 ps_dec->u1_mb_ngbr_availablity,
1279 ps_dec->u1_cur_mb_fld_dec_flag);
1280
1281 ps_svc_cur_mb_info->u1_base_mode_flag = 0;
1282 /* Macroblock Layer Begins */
1283 if(ps_svc_cur_mb_info->u1_crop_window_flag &&
1284 ps_svc_slice_params->u1_adaptive_base_mode_flag)
1285 {
1286 pu1_cur_svc_base_mode_flag =
1287 ps_svc_lyr_dec->pu1_svc_base_mode_flag + ps_cur_mb_info->u2_mbx;
1288 pu1_cur_svc_base_mode_flag +=
1289 ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride;
1290
1291 u1_left_svc_base_mode_flag = 0;
1292 if(ps_dec->u1_mb_ngbr_availablity & LEFT_MB_AVAILABLE_MASK)
1293 u1_left_svc_base_mode_flag = *(pu1_cur_svc_base_mode_flag - 1);
1294
1295 u1_top_svc_base_mode_flag = 0;
1296 if(ps_dec->u1_mb_ngbr_availablity & TOP_MB_AVAILABLE_MASK)
1297 u1_top_svc_base_mode_flag =
1298 *(pu1_cur_svc_base_mode_flag -
1299 ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride);
1300
1301 u4_a = 1;
1302 u4_b = 1;
1303
1304 if(u1_top_svc_base_mode_flag)
1305 {
1306 u4_a = 0;
1307 }
1308
1309 if(u1_left_svc_base_mode_flag)
1310 {
1311 u4_b = 0;
1312 }
1313
1314 u4_ctxt_inc = u4_a + u4_b;
1315 ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_decode_bin(
1316 u4_ctxt_inc, ps_svc_lyr_dec->ps_base_mode_flag, ps_bitstrm, ps_cab_env);
1317 COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
1318 *pu1_cur_svc_base_mode_flag = ps_svc_cur_mb_info->u1_base_mode_flag;
1319 }
1320 else if(ps_svc_cur_mb_info->u1_crop_window_flag)
1321 {
1322 ps_svc_cur_mb_info->u1_base_mode_flag =
1323 ps_svc_slice_params->u1_default_base_mode_flag;
1324 }
1325
1326 if(!ps_svc_cur_mb_info->u1_base_mode_flag)
1327 {
1328 /* Decode the u1_mb_type */
1329 u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec);
1330 if(u1_mb_type > 25) return ERROR_MB_TYPE;
1331 ps_cur_mb_info->u1_mb_type = u1_mb_type;
1332 COPYTHECONTEXT("u1_mb_type", u1_mb_type);
1333 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
1334 }
1335 else
1336 {
1337 ps_cur_mb_info->u1_mb_type = MB_INFER;
1338 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL;
1339 }
1340 /* Parse Macroblock Data */
1341 u1_mb_type = ps_cur_mb_info->u1_mb_type;
1342 if(25 == u1_mb_type)
1343 {
1344 /* I_PCM_MB */
1345 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
1346 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
1347 if(ret != OK) return ret;
1348 ps_cur_deblk_mb->u1_mb_qp = 0;
1349 }
1350 else
1351 {
1352 ret = isvcd_parse_imb_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
1353 u1_mb_type);
1354 if(ret != OK) return ret;
1355 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
1356 }
1357
1358 if(ps_dec->u1_enable_mb_info)
1359 {
1360 ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
1361 ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
1362 }
1363 if(u1_mbaff)
1364 {
1365 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
1366 }
1367
1368 if(ps_cur_mb_info->u1_topmb && u1_mbaff)
1369 uc_more_data_flag = 1;
1370 else
1371 {
1372 uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, ps_bitstrm);
1373 uc_more_data_flag = !uc_more_data_flag;
1374 COPYTHECONTEXT("Decode Sliceterm", !uc_more_data_flag);
1375 }
1376
1377 if(u1_mbaff)
1378 {
1379 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
1380 {
1381 return ERROR_EOB_FLUSHBITS_T;
1382 }
1383 }
1384 /* Next macroblock information */
1385 i2_cur_mb_addr++;
1386 /* Store the colocated information */
1387 {
1388 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
1389 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
1390 if(ps_mv_nmb_start)
1391 {
1392 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
1393 (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
1394 }
1395 else
1396 {
1397 return NOT_OK;
1398 }
1399 }
1400
1401 u1_num_mbs++;
1402 }
1403
1404 /****************************************************************/
1405 /* Check for End Of Row */
1406 /****************************************************************/
1407 u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1;
1408 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
1409 u1_tfr_n_mb =
1410 (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
1411 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
1412
1413 if(u1_tfr_n_mb || (!uc_more_data_flag))
1414 {
1415 if(ps_dec->u1_separate_parse)
1416 {
1417 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
1418 u1_end_of_row);
1419 ps_dec->ps_nmb_info += u1_num_mbs;
1420 ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
1421 }
1422 else
1423 {
1424 ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
1425 u1_num_mbs_next, u1_tfr_n_mb,
1426 u1_end_of_row);
1427 if(ret != OK) return ret;
1428 }
1429 ps_dec->u2_total_mbs_coded += u1_num_mbs;
1430 if(u1_tfr_n_mb) u1_num_mbs = 0;
1431 u1_mb_idx = u1_num_mbs;
1432 ps_dec->u1_mb_idx = u1_num_mbs;
1433 }
1434 } while(uc_more_data_flag);
1435
1436 ps_dec->u4_num_mbs_cur_nmb = 0;
1437 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);
1438
1439 return ret;
1440 }
1441
1442 /*****************************************************************************/
1443 /* */
1444 /* Function Name : isvcd_parse_eislice_data_cavlc */
1445 /* */
1446 /* Description : This function parses cabac syntax of a inter slice on */
1447 /* N MB basis. */
1448 /* */
1449 /* Inputs : ps_dec */
1450 /* sliceparams */
1451 /* firstMbInSlice */
1452 /* */
1453 /* Processing : 1. After parsing syntax for N MBs those N MBs are */
1454 /* decoded till the end of slice. */
1455 /* */
1456 /* Returns : 0 */
1457 /* */
1458 /* Issues : <List any issues or problems with this function> */
1459 /* */
1460 /* Revision History: */
1461 /* */
1462 /* DD MM YYYY Author(s) Changes (Describe the changes made) */
1463 /* 24 06 2005 Kishore Draft */
1464 /* */
1465 /*****************************************************************************/
isvcd_parse_eislice_data_cavlc(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_slice_params_t * ps_slice,UWORD16 u2_first_mb_in_slice)1466 WORD32 isvcd_parse_eislice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
1467 dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
1468 {
1469 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1470 UWORD8 uc_more_data_flag;
1471 UWORD8 u1_num_mbs, u1_mb_idx;
1472 dec_mb_info_t *ps_cur_mb_info;
1473 dec_svc_mb_info_t *ps_svc_cur_mb_info;
1474 deblk_mb_t *ps_cur_deblk_mb;
1475 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
1476 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
1477 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
1478 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
1479 WORD16 i2_cur_mb_addr;
1480 UWORD8 u1_mbaff;
1481 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
1482 WORD32 ret = OK;
1483 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
1484
1485 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1486 ps_dec->u1_qp = ps_slice->u1_slice_qp;
1487 ih264d_update_qp(ps_dec, 0);
1488 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
1489
1490 u1_mb_idx = ps_dec->u1_mb_idx;
1491 u1_num_mbs = u1_mb_idx;
1492 uc_more_data_flag = 1;
1493 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
1494
1495 do
1496 {
1497 UWORD8 u1_mb_type;
1498 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
1499 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
1500 {
1501 break;
1502 }
1503
1504 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
1505 ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
1506 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
1507 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
1508 ps_cur_mb_info->u1_end_of_slice = 0;
1509 /***************************************************************/
1510 /* Get the required information for decoding of MB */
1511 /* mb_x, mb_y , neighbour availablity, */
1512 /***************************************************************/
1513 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0);
1514 ps_svc_cur_mb_info->u1_crop_window_flag =
1515 *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
1516 (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
1517
1518 /***************************************************************/
1519 /* Set the deblocking parameters for this MB */
1520 /***************************************************************/
1521 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
1522 if(ps_dec->u4_app_disable_deblk_frm == 0)
1523 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
1524 ps_dec->u1_mb_ngbr_availablity,
1525 ps_dec->u1_cur_mb_fld_dec_flag);
1526
1527 ps_svc_cur_mb_info->u1_base_mode_flag = 0;
1528 if(ps_svc_cur_mb_info->u1_crop_window_flag &&
1529 ps_svc_slice_params->u1_adaptive_base_mode_flag)
1530 {
1531 ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_get_bit_h264(ps_bitstrm);
1532 COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
1533 }
1534 else if(ps_svc_cur_mb_info->u1_crop_window_flag)
1535 {
1536 ps_svc_cur_mb_info->u1_base_mode_flag = ps_svc_slice_params->u1_default_base_mode_flag;
1537 }
1538
1539 /**************************************************************/
1540 /* Macroblock Layer Begins, Decode the u1_mb_type */
1541 /**************************************************************/
1542 if(!ps_svc_cur_mb_info->u1_base_mode_flag) /* Inlined ih264d_uev */
1543 {
1544 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
1545 UWORD32 u4_word, u4_ldz, u4_temp;
1546
1547 /***************************************************************/
1548 /* Find leading zeros in next 32 bits */
1549 /***************************************************************/
1550 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
1551 u4_ldz = CLZ(u4_word);
1552 /* Flush the ps_bitstrm */
1553 u4_bitstream_offset += (u4_ldz + 1);
1554 /* Read the suffix from the ps_bitstrm */
1555 u4_word = 0;
1556 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
1557 *pu4_bitstrm_ofst = u4_bitstream_offset;
1558 u4_temp = ((1 << u4_ldz) + u4_word - 1);
1559 if(u4_temp > 25) return ERROR_MB_TYPE;
1560 u1_mb_type = u4_temp;
1561
1562 /* Inlined ih264d_uev */
1563 ps_cur_mb_info->u1_mb_type = u1_mb_type;
1564 COPYTHECONTEXT("u1_mb_type", u1_mb_type);
1565
1566 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
1567 }
1568 else
1569 {
1570 ps_cur_mb_info->u1_mb_type = MB_INFER;
1571 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL;
1572 }
1573
1574 /**************************************************************/
1575 /* Parse Macroblock data */
1576 /**************************************************************/
1577 u1_mb_type = ps_cur_mb_info->u1_mb_type;
1578 if(25 == u1_mb_type)
1579 {
1580 /* I_PCM_MB */
1581 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
1582 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
1583 if(ret != OK) return ret;
1584 ps_cur_deblk_mb->u1_mb_qp = 0;
1585 }
1586 else
1587 {
1588 ret = isvcd_parse_imb_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
1589 u1_num_mbs, u1_mb_type);
1590 if(ret != OK) return ret;
1591 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
1592 }
1593
1594 if(ps_dec->u1_enable_mb_info)
1595 {
1596 ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
1597 ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
1598 }
1599 uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
1600
1601 if(u1_mbaff)
1602 {
1603 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
1604 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
1605 {
1606 return ERROR_EOB_FLUSHBITS_T;
1607 }
1608 }
1609 /**************************************************************/
1610 /* Get next Macroblock address */
1611 /**************************************************************/
1612 i2_cur_mb_addr++;
1613 /* Store the colocated information */
1614 {
1615 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
1616 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
1617 if(ps_mv_nmb_start)
1618 {
1619 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
1620 (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
1621 }
1622 else
1623 {
1624 return NOT_OK;
1625 }
1626 }
1627 u1_num_mbs++;
1628
1629 /****************************************************************/
1630 /* Check for End Of Row */
1631 /****************************************************************/
1632 u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
1633 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
1634 u1_tfr_n_mb =
1635 (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
1636 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
1637
1638 if(u1_tfr_n_mb || (!uc_more_data_flag))
1639 {
1640 if(ps_dec->u1_separate_parse)
1641 {
1642 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
1643 u1_end_of_row);
1644 ps_dec->ps_nmb_info += u1_num_mbs;
1645 ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
1646 }
1647 else
1648 {
1649 ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
1650 u1_num_mbs_next, u1_tfr_n_mb,
1651 u1_end_of_row);
1652 if(ret != OK) return ret;
1653 }
1654 ps_dec->u2_total_mbs_coded += u1_num_mbs;
1655 if(u1_tfr_n_mb) u1_num_mbs = 0;
1656 u1_mb_idx = u1_num_mbs;
1657 ps_dec->u1_mb_idx = u1_num_mbs;
1658 }
1659 } while(uc_more_data_flag);
1660
1661 ps_dec->u4_num_mbs_cur_nmb = 0;
1662 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);
1663
1664 return ret;
1665 }
1666
1667 /*!
1668 **************************************************************************
1669 * \if Function name : ParseIMbCab \endif
1670 *
1671 * \brief
1672 * This function parses CABAC syntax of a I MB. If 16x16 Luma DC transform
1673 * is also done here. Transformed Luma DC values are copied in their
1674 * 0th pixel location of corrosponding CoeffBlock.
1675 *
1676 * \return
1677 * 0 on Success and Error code otherwise
1678 **************************************************************************
1679 */
isvcd_parse_imb_cabac(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_mb_info_t * ps_cur_mb_info,dec_svc_mb_info_t * ps_svc_cur_mb_info,UWORD8 u1_mb_type)1680 WORD32 isvcd_parse_imb_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
1681 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_type)
1682 {
1683 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1684 WORD8 i1_delta_qp;
1685 UWORD8 u1_cbp;
1686 UWORD8 u1_offset;
1687 /* Variables for handling Cabac contexts */
1688 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
1689 ctxt_inc_mb_info_t *ps_left_ctxt = ps_dec->p_left_ctxt_mb_info;
1690 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
1691 bin_ctxt_model_t *p_bin_ctxt;
1692 UWORD8 u1_intra_chrom_pred_mode;
1693 UWORD8 u1_dc_block_flag = 0;
1694 WORD32 ret;
1695
1696 ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
1697
1698 if(ps_left_ctxt == ps_dec->ps_def_ctxt_mb_info)
1699 {
1700 ps_dec->pu1_left_yuv_dc_csbp[0] = 0xf;
1701 }
1702
1703 if(ps_dec->ps_cur_slice->u1_slice_type != I_SLICE)
1704 {
1705 MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);
1706 *((UWORD32 *) ps_dec->pi1_left_ref_idx_ctxt_inc) = 0;
1707 MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0);
1708 memset(p_curr_ctxt->i1_ref_idx, 0, 4);
1709 }
1710
1711 /* default */
1712 ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB;
1713 if(!ps_svc_cur_mb_info->u1_base_mode_flag)
1714 {
1715 if(u1_mb_type == I_4x4_MB)
1716 {
1717 ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
1718 p_curr_ctxt->u1_mb_type = CAB_I4x4;
1719 u1_offset = 0;
1720 ps_cur_mb_info->u1_tran_form8x8 = 0;
1721 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1722 /*--------------------------------------------------------------------*/
1723 /* Read transform_size_8x8_flag if present */
1724 /*--------------------------------------------------------------------*/
1725 if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag)
1726 {
1727 ps_cur_mb_info->u1_tran_form8x8 =
1728 ih264d_parse_transform8x8flag_cabac(ps_dec, ps_cur_mb_info);
1729 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
1730 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
1731 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
1732 }
1733 else
1734 {
1735 p_curr_ctxt->u1_transform8x8_ctxt = 0;
1736 }
1737
1738 /*--------------------------------------------------------------------*/
1739 /* Read the IntraPrediction modes for LUMA */
1740 /*--------------------------------------------------------------------*/
1741 if(!ps_cur_mb_info->u1_tran_form8x8)
1742 {
1743 UWORD8 *pu1_temp;
1744 ih264d_read_intra_pred_modes_cabac(ps_dec,
1745 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
1746 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16),
1747 ps_cur_mb_info->u1_tran_form8x8);
1748 pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
1749 pu1_temp += 32;
1750 ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
1751 }
1752 else
1753 {
1754 UWORD8 *pu1_temp;
1755 ih264d_read_intra_pred_modes_cabac(ps_dec,
1756 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
1757 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4),
1758 ps_cur_mb_info->u1_tran_form8x8);
1759 pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
1760 pu1_temp += 8;
1761 ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
1762 }
1763 /*--------------------------------------------------------------------*/
1764 /* Read the IntraPrediction mode for CHROMA */
1765 /*--------------------------------------------------------------------*/
1766 u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec);
1767 COPYTHECONTEXT("intra_chroma_pred_mode", u1_intra_chrom_pred_mode);
1768 p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode =
1769 u1_intra_chrom_pred_mode;
1770
1771 /*--------------------------------------------------------------------*/
1772 /* Read the Coded block pattern */
1773 /*--------------------------------------------------------------------*/
1774 u1_cbp = ih264d_parse_ctx_cbp_cabac(ps_dec);
1775 COPYTHECONTEXT("coded_block_pattern", u1_cbp);
1776 ps_cur_mb_info->u1_cbp = u1_cbp;
1777 p_curr_ctxt->u1_cbp = u1_cbp;
1778
1779 /*--------------------------------------------------------------------*/
1780 /* Read mb_qp_delta */
1781 /*--------------------------------------------------------------------*/
1782 if(ps_cur_mb_info->u1_cbp)
1783 {
1784 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
1785 if(ret != OK) return ret;
1786 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
1787 if(i1_delta_qp != 0)
1788 {
1789 ret = ih264d_update_qp(ps_dec, i1_delta_qp);
1790 if(ret != OK) return ret;
1791 }
1792 }
1793 else
1794 ps_dec->i1_prev_mb_qp_delta = 0;
1795 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
1796 }
1797 else
1798 {
1799 u1_offset = 1;
1800 ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;
1801 p_curr_ctxt->u1_mb_type = CAB_I16x16;
1802 ps_cur_mb_info->u1_tran_form8x8 = 0;
1803 p_curr_ctxt->u1_transform8x8_ctxt = 0;
1804 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1805 /*--------------------------------------------------------------------*/
1806 /* Read the IntraPrediction mode for CHROMA */
1807 /*--------------------------------------------------------------------*/
1808 u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec);
1809 if(u1_intra_chrom_pred_mode > 3) return ERROR_CHROMA_PRED_MODE;
1810
1811 COPYTHECONTEXT("Chroma intra_chroma_pred_mode pred mode", u1_intra_chrom_pred_mode);
1812 p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode =
1813 u1_intra_chrom_pred_mode;
1814
1815 /*--------------------------------------------------------------------*/
1816 /* Read the Coded block pattern */
1817 /*--------------------------------------------------------------------*/
1818 u1_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2];
1819 ps_cur_mb_info->u1_cbp = u1_cbp;
1820 p_curr_ctxt->u1_cbp = u1_cbp;
1821
1822 /*--------------------------------------------------------------------*/
1823 /* Read mb_qp_delta */
1824 /*--------------------------------------------------------------------*/
1825 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
1826 if(ret != OK) return ret;
1827 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
1828 if(i1_delta_qp != 0)
1829 {
1830 ret = ih264d_update_qp(ps_dec, i1_delta_qp);
1831 if(ret != OK) return ret;
1832 }
1833
1834 {
1835 WORD16 i_scaleFactor;
1836 WORD16 *pi2_scale_matrix_ptr;
1837 /*******************************************************************/
1838 /* for luma DC coefficients the scaling is done during the parsing */
1839 /* to preserve the precision */
1840 /*******************************************************************/
1841 if(ps_dec->s_high_profile.u1_scaling_present)
1842 {
1843 pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0];
1844 }
1845 else
1846 {
1847 i_scaleFactor = 16;
1848 pi2_scale_matrix_ptr = &i_scaleFactor;
1849 }
1850 {
1851 ctxt_inc_mb_info_t *ps_top_ctxt = ps_dec->p_top_ctxt_mb_info;
1852 UWORD8 uc_a, uc_b;
1853 UWORD32 u4_ctx_inc;
1854 INC_SYM_COUNT(&(ps_dec->s_cab_dec_env));
1855
1856 /* if MbAddrN not available then CondTermN = 1 */
1857 uc_b = ((ps_top_ctxt->u1_yuv_dc_csbp) & 0x01);
1858
1859 /* if MbAddrN not available then CondTermN = 1 */
1860 uc_a = ((ps_dec->pu1_left_yuv_dc_csbp[0]) & 0x01);
1861
1862 u4_ctx_inc = (uc_a + (uc_b << 1));
1863 {
1864 WORD16 pi2_dc_coef[16] = {0};
1865 tu_sblk4x4_coeff_data_t *ps_tu_4x4 =
1866 (tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data;
1867 WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data;
1868
1869 p_bin_ctxt = (ps_dec->p_cbf_t[LUMA_DC_CTXCAT]) + u4_ctx_inc;
1870
1871 u1_dc_block_flag = ih264d_read_coeff4x4_cabac(
1872 ps_bitstrm, LUMA_DC_CTXCAT,
1873 ps_dec->p_significant_coeff_flag_t[LUMA_DC_CTXCAT], ps_dec, p_bin_ctxt);
1874
1875 /* Store coded_block_flag */
1876 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
1877 p_curr_ctxt->u1_yuv_dc_csbp |= u1_dc_block_flag;
1878 if(u1_dc_block_flag)
1879 {
1880 WORD32 pi4_tmp[16] = {0};
1881 memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef));
1882 ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef,
1883 ps_dec->pu1_inv_scan);
1884
1885 PROFILE_DISABLE_IQ_IT_RECON()
1886 ps_dec->pf_ihadamard_scaling_4x4(
1887 pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y,
1888 (UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp);
1889 pi2_coeff_block += 16;
1890 ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block;
1891 SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0);
1892 }
1893 }
1894 }
1895 }
1896 }
1897 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
1898 ps_dec->pu1_left_yuv_dc_csbp[0] |= u1_dc_block_flag;
1899 }
1900 else
1901 {
1902 u1_offset = 0;
1903 /*--------------------------------------------------------------------*/
1904 /* Read the Coded block pattern */
1905 /*--------------------------------------------------------------------*/
1906 u1_cbp = ih264d_parse_ctx_cbp_cabac(ps_dec);
1907 COPYTHECONTEXT("coded_block_pattern", u1_cbp);
1908
1909 ps_cur_mb_info->u1_cbp = u1_cbp;
1910 p_curr_ctxt->u1_cbp = u1_cbp;
1911 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
1912 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
1913 p_curr_ctxt->u1_mb_type = CAB_INFERRED;
1914 p_curr_ctxt->u1_intra_chroma_pred_mode = 0;
1915 ps_cur_mb_info->u1_tran_form8x8 = 0;
1916 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1917
1918 /*--------------------------------------------------------------------*/
1919 /* Read transform_size_8x8_flag if present */
1920 /*--------------------------------------------------------------------*/
1921 if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (u1_cbp & 0xf))
1922 {
1923 ps_cur_mb_info->u1_tran_form8x8 =
1924 ih264d_parse_transform8x8flag_cabac(ps_dec, ps_cur_mb_info);
1925 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
1926 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
1927 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
1928 }
1929 else
1930 {
1931 p_curr_ctxt->u1_transform8x8_ctxt = 0;
1932 }
1933
1934 /*--------------------------------------------------------------------*/
1935 /* Read mb_qp_delta */
1936 /*--------------------------------------------------------------------*/
1937 if(ps_cur_mb_info->u1_cbp)
1938 {
1939 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
1940 if(ret != OK) return ret;
1941 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
1942 if(i1_delta_qp != 0)
1943 {
1944 ret = ih264d_update_qp(ps_dec, i1_delta_qp);
1945 if(ret != OK) return ret;
1946 }
1947 }
1948 else
1949 ps_dec->i1_prev_mb_qp_delta = 0;
1950 }
1951
1952 ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, u1_offset);
1953 if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
1954 return OK;
1955 }
1956
1957 /*!
1958 **************************************************************************
1959 * \if Function name : isvcd_decode_islice \endif
1960 *
1961 * \brief
1962 * Decodes an I Slice
1963 *
1964 *
1965 * \return
1966 * 0 on Success and Error code otherwise
1967 **************************************************************************
1968 */
isvcd_parse_islice(svc_dec_lyr_struct_t * ps_svc_lyr_dec,UWORD16 u2_first_mb_in_slice)1969 WORD32 isvcd_parse_islice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
1970 {
1971 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1972 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1973 dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
1974 UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
1975 UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
1976 UWORD32 u4_temp;
1977 WORD32 i_temp;
1978 WORD32 ret;
1979
1980 /*--------------------------------------------------------------------*/
1981 /* Read remaining contents of the slice header */
1982 /*--------------------------------------------------------------------*/
1983 /* dec_ref_pic_marking function */
1984 /* G050 */
1985 if(ps_slice->u1_nal_ref_idc != 0)
1986 {
1987 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
1988 {
1989 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1990 dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
1991 UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
1992
1993 ps_pps->ps_sps = ps_dec->ps_cur_sps;
1994 if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
1995 ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
1996
1997 i_temp = ih264d_read_mmco_commands(ps_dec);
1998 ps_pps->ps_sps = ps_sps_tmp;
1999 ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
2000
2001 if(i_temp < 0)
2002 {
2003 return ERROR_DBP_MANAGER_T;
2004 }
2005 ps_dec->u4_bitoffset = i_temp;
2006 }
2007 else
2008 ps_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
2009 }
2010
2011 {
2012 /* G050 */
2013 /* Read slice_qp_delta */
2014 WORD64 i8_temp =
2015 (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2016 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
2017 ps_slice->u1_slice_qp = (UWORD8) i8_temp;
2018 COPYTHECONTEXT("SH: slice_qp_delta", ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp);
2019 }
2020 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
2021 {
2022 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2023 COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp);
2024
2025 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
2026 {
2027 return ERROR_INV_SLICE_HDR_T;
2028 }
2029 ps_slice->u1_disable_dblk_filter_idc = u4_temp;
2030 if(u4_temp != 1)
2031 {
2032 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
2033 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
2034 {
2035 return ERROR_INV_SLICE_HDR_T;
2036 }
2037 ps_slice->i1_slice_alpha_c0_offset = i_temp;
2038 COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
2039 ps_slice->i1_slice_alpha_c0_offset >> 1);
2040
2041 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
2042 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
2043 {
2044 return ERROR_INV_SLICE_HDR_T;
2045 }
2046 ps_slice->i1_slice_beta_offset = i_temp;
2047 COPYTHECONTEXT("SH: slice_beta_offset_div2", ps_slice->i1_slice_beta_offset >> 1);
2048 }
2049 else
2050 {
2051 ps_slice->i1_slice_alpha_c0_offset = 0;
2052 ps_slice->i1_slice_beta_offset = 0;
2053 }
2054 }
2055 else
2056 {
2057 ps_slice->u1_disable_dblk_filter_idc = 0;
2058 ps_slice->i1_slice_alpha_c0_offset = 0;
2059 ps_slice->i1_slice_beta_offset = 0;
2060 }
2061
2062 /* Initialization to check if number of motion vector per 2 Mbs */
2063 /* are exceeding the range or not */
2064 ps_dec->u2_mv_2mb[0] = 0;
2065 ps_dec->u2_mv_2mb[1] = 0;
2066
2067 ret = isvcd_parse_interlayer_resamp_func_init(ps_svc_lyr_dec, u2_first_mb_in_slice);
2068 if(ret != OK)
2069 {
2070 return ERROR_CORRUPTED_SLICE;
2071 }
2072 /*set slice header cone to 2 ,to indicate correct header*/
2073 ps_dec->u1_slice_header_done = 2;
2074 if(ps_pps->u1_entropy_coding_mode)
2075 {
2076 SWITCHOFFTRACE;
2077 SWITCHONTRACECABAC;
2078 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
2079 {
2080 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
2081 }
2082 else
2083 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
2084
2085 ret = isvcd_parse_islice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
2086 if(ret != OK) return ret;
2087 SWITCHONTRACE;
2088 SWITCHOFFTRACECABAC;
2089 }
2090 else
2091 {
2092 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
2093 {
2094 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
2095 }
2096 else
2097 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
2098 ret = isvcd_parse_islice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
2099 if(ret != OK) return ret;
2100 }
2101
2102 return OK;
2103 }
2104