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 /*set slice header cone to 2 ,to indicate correct header*/
1131 ps_dec->u1_slice_header_done = 2;
1132
1133 if(!ps_svc_slice_params->u1_slice_skip_flag)
1134 {
1135 if(ps_pps->u1_entropy_coding_mode)
1136 {
1137 SWITCHOFFTRACE;
1138 SWITCHONTRACECABAC;
1139 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1140 {
1141 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
1142 }
1143 else
1144 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
1145
1146 ret = isvcd_parse_eislice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
1147 if(ret != OK) return ret;
1148 SWITCHONTRACE;
1149 SWITCHOFFTRACECABAC;
1150 }
1151 else
1152 {
1153 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
1154 {
1155 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
1156 }
1157 else
1158 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
1159 ret = isvcd_parse_eislice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
1160 if(ret != OK) return ret;
1161 }
1162 }
1163 else
1164 {
1165 return ERROR_FEATURE_UNAVAIL;
1166 }
1167
1168 return OK;
1169 }
1170
1171 /*****************************************************************************/
1172 /* */
1173 /* Function Name : isvcd_parse_eislice_data_cabac */
1174 /* */
1175 /* Description : This function parses cabac syntax of a inter slice on */
1176 /* N MB basis. */
1177 /* */
1178 /* Inputs : ps_dec */
1179 /* sliceparams */
1180 /* firstMbInSlice */
1181 /* */
1182 /* Processing : 1. After parsing syntax for N MBs those N MBs are */
1183 /* decoded till the end of slice. */
1184 /* */
1185 /* Returns : 0 */
1186 /* */
1187 /* Issues : <List any issues or problems with this function> */
1188 /* */
1189 /* Revision History: */
1190 /* */
1191 /* DD MM YYYY Author(s) Changes (Describe the changes made) */
1192 /* 24 06 2005 Kishore Draft */
1193 /* */
1194 /*****************************************************************************/
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)1195 WORD32 isvcd_parse_eislice_data_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
1196 dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
1197 {
1198 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1199 UWORD8 uc_more_data_flag;
1200 UWORD8 u1_num_mbs, u1_mb_idx;
1201 dec_mb_info_t *ps_cur_mb_info;
1202 dec_svc_mb_info_t *ps_svc_cur_mb_info;
1203 deblk_mb_t *ps_cur_deblk_mb;
1204 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
1205 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
1206 WORD16 i2_cur_mb_addr;
1207 UWORD8 u1_mbaff;
1208 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
1209 WORD32 ret = OK;
1210 decoding_envirnoment_t *ps_cab_env;
1211 UWORD8 *pu1_cur_svc_base_mode_flag;
1212 UWORD8 u1_left_svc_base_mode_flag;
1213 UWORD8 u1_top_svc_base_mode_flag;
1214 UWORD32 u4_a, u4_b, u4_ctxt_inc;
1215 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
1216
1217 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1218 ps_dec->u1_qp = ps_slice->u1_slice_qp;
1219 ih264d_update_qp(ps_dec, 0);
1220 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
1221
1222 if(ps_bitstrm->u4_ofst & 0x07)
1223 {
1224 ps_bitstrm->u4_ofst += 8;
1225 ps_bitstrm->u4_ofst &= 0xFFFFFFF8;
1226 }
1227 ret = ih264d_init_cabac_dec_envirnoment(&(ps_dec->s_cab_dec_env), ps_bitstrm);
1228 if(ret != OK) return ret;
1229 isvcd_init_cabac_contexts(I_SLICE, ps_dec);
1230 ps_dec->i1_prev_mb_qp_delta = 0;
1231 ps_cab_env = &ps_dec->s_cab_dec_env;
1232 /* initializations */
1233 u1_mb_idx = ps_dec->u1_mb_idx;
1234 u1_num_mbs = u1_mb_idx;
1235 uc_more_data_flag = 1;
1236 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
1237 do
1238 {
1239 UWORD16 u2_mbx;
1240 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
1241 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
1242 {
1243 break;
1244 }
1245
1246 {
1247 UWORD8 u1_mb_type;
1248 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
1249 ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
1250 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
1251 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
1252 ps_cur_mb_info->u1_end_of_slice = 0;
1253 /***************************************************************/
1254 /* Get the required information for decoding of MB */
1255 /* mb_x, mb_y , neighbour availablity, */
1256 /***************************************************************/
1257 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0);
1258 u2_mbx = ps_dec->u2_mbx;
1259 ps_svc_cur_mb_info->u1_crop_window_flag =
1260 *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
1261 (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
1262 /*********************************************************************/
1263 /* initialize u1_tran_form8x8 to zero to aviod uninitialized accesses */
1264 /*********************************************************************/
1265 ps_cur_mb_info->u1_tran_form8x8 = 0;
1266 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1267 /***************************************************************/
1268 /* Set the deblocking parameters for this MB */
1269 /***************************************************************/
1270 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
1271 if(ps_dec->u4_app_disable_deblk_frm == 0)
1272 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
1273 ps_dec->u1_mb_ngbr_availablity,
1274 ps_dec->u1_cur_mb_fld_dec_flag);
1275
1276 ps_svc_cur_mb_info->u1_base_mode_flag = 0;
1277 /* Macroblock Layer Begins */
1278 if(ps_svc_cur_mb_info->u1_crop_window_flag &&
1279 ps_svc_slice_params->u1_adaptive_base_mode_flag)
1280 {
1281 pu1_cur_svc_base_mode_flag =
1282 ps_svc_lyr_dec->pu1_svc_base_mode_flag + ps_cur_mb_info->u2_mbx;
1283 pu1_cur_svc_base_mode_flag +=
1284 ps_cur_mb_info->u2_mby * ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride;
1285
1286 u1_left_svc_base_mode_flag = 0;
1287 if(ps_dec->u1_mb_ngbr_availablity & LEFT_MB_AVAILABLE_MASK)
1288 u1_left_svc_base_mode_flag = *(pu1_cur_svc_base_mode_flag - 1);
1289
1290 u1_top_svc_base_mode_flag = 0;
1291 if(ps_dec->u1_mb_ngbr_availablity & TOP_MB_AVAILABLE_MASK)
1292 u1_top_svc_base_mode_flag =
1293 *(pu1_cur_svc_base_mode_flag -
1294 ps_svc_lyr_dec->i4_frm_svc_base_mode_cabac_stride);
1295
1296 u4_a = 1;
1297 u4_b = 1;
1298
1299 if(u1_top_svc_base_mode_flag)
1300 {
1301 u4_a = 0;
1302 }
1303
1304 if(u1_left_svc_base_mode_flag)
1305 {
1306 u4_b = 0;
1307 }
1308
1309 u4_ctxt_inc = u4_a + u4_b;
1310 ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_decode_bin(
1311 u4_ctxt_inc, ps_svc_lyr_dec->ps_base_mode_flag, ps_bitstrm, ps_cab_env);
1312 COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
1313 *pu1_cur_svc_base_mode_flag = ps_svc_cur_mb_info->u1_base_mode_flag;
1314 }
1315 else if(ps_svc_cur_mb_info->u1_crop_window_flag)
1316 {
1317 ps_svc_cur_mb_info->u1_base_mode_flag =
1318 ps_svc_slice_params->u1_default_base_mode_flag;
1319 }
1320
1321 if(!ps_svc_cur_mb_info->u1_base_mode_flag)
1322 {
1323 /* Decode the u1_mb_type */
1324 u1_mb_type = ih264d_parse_mb_type_intra_cabac(0, ps_dec);
1325 if(u1_mb_type > 25) return ERROR_MB_TYPE;
1326 ps_cur_mb_info->u1_mb_type = u1_mb_type;
1327 COPYTHECONTEXT("u1_mb_type", u1_mb_type);
1328 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
1329 }
1330 else
1331 {
1332 ps_cur_mb_info->u1_mb_type = MB_INFER;
1333 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL;
1334 }
1335 /* Parse Macroblock Data */
1336 u1_mb_type = ps_cur_mb_info->u1_mb_type;
1337 if(25 == u1_mb_type)
1338 {
1339 /* I_PCM_MB */
1340 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
1341 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
1342 if(ret != OK) return ret;
1343 ps_cur_deblk_mb->u1_mb_qp = 0;
1344 }
1345 else
1346 {
1347 ret = isvcd_parse_imb_cabac(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
1348 u1_mb_type);
1349 if(ret != OK) return ret;
1350 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
1351 }
1352
1353 if(ps_dec->u1_enable_mb_info)
1354 {
1355 ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
1356 ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
1357 }
1358 if(u1_mbaff)
1359 {
1360 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
1361 }
1362
1363 if(ps_cur_mb_info->u1_topmb && u1_mbaff)
1364 uc_more_data_flag = 1;
1365 else
1366 {
1367 uc_more_data_flag = ih264d_decode_terminate(&ps_dec->s_cab_dec_env, ps_bitstrm);
1368 uc_more_data_flag = !uc_more_data_flag;
1369 COPYTHECONTEXT("Decode Sliceterm", !uc_more_data_flag);
1370 }
1371
1372 if(u1_mbaff)
1373 {
1374 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
1375 {
1376 return ERROR_EOB_FLUSHBITS_T;
1377 }
1378 }
1379 /* Next macroblock information */
1380 i2_cur_mb_addr++;
1381 /* Store the colocated information */
1382 {
1383 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
1384 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
1385 if(ps_mv_nmb_start)
1386 {
1387 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
1388 (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
1389 }
1390 else
1391 {
1392 return NOT_OK;
1393 }
1394 }
1395
1396 u1_num_mbs++;
1397 }
1398
1399 /****************************************************************/
1400 /* Check for End Of Row */
1401 /****************************************************************/
1402 u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1;
1403 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
1404 u1_tfr_n_mb =
1405 (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
1406 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
1407
1408 if(u1_tfr_n_mb || (!uc_more_data_flag))
1409 {
1410 if(ps_dec->u1_separate_parse)
1411 {
1412 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
1413 u1_end_of_row);
1414 ps_dec->ps_nmb_info += u1_num_mbs;
1415 ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
1416 }
1417 else
1418 {
1419 ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
1420 u1_num_mbs_next, u1_tfr_n_mb,
1421 u1_end_of_row);
1422 if(ret != OK) return ret;
1423 }
1424 ps_dec->u2_total_mbs_coded += u1_num_mbs;
1425 if(u1_tfr_n_mb) u1_num_mbs = 0;
1426 u1_mb_idx = u1_num_mbs;
1427 ps_dec->u1_mb_idx = u1_num_mbs;
1428 }
1429 } while(uc_more_data_flag);
1430
1431 ps_dec->u4_num_mbs_cur_nmb = 0;
1432 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);
1433
1434 return ret;
1435 }
1436
1437 /*****************************************************************************/
1438 /* */
1439 /* Function Name : isvcd_parse_eislice_data_cavlc */
1440 /* */
1441 /* Description : This function parses cabac syntax of a inter slice on */
1442 /* N MB basis. */
1443 /* */
1444 /* Inputs : ps_dec */
1445 /* sliceparams */
1446 /* firstMbInSlice */
1447 /* */
1448 /* Processing : 1. After parsing syntax for N MBs those N MBs are */
1449 /* decoded till the end of slice. */
1450 /* */
1451 /* Returns : 0 */
1452 /* */
1453 /* Issues : <List any issues or problems with this function> */
1454 /* */
1455 /* Revision History: */
1456 /* */
1457 /* DD MM YYYY Author(s) Changes (Describe the changes made) */
1458 /* 24 06 2005 Kishore Draft */
1459 /* */
1460 /*****************************************************************************/
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)1461 WORD32 isvcd_parse_eislice_data_cavlc(svc_dec_lyr_struct_t *ps_svc_lyr_dec,
1462 dec_slice_params_t *ps_slice, UWORD16 u2_first_mb_in_slice)
1463 {
1464 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1465 UWORD8 uc_more_data_flag;
1466 UWORD8 u1_num_mbs, u1_mb_idx;
1467 dec_mb_info_t *ps_cur_mb_info;
1468 dec_svc_mb_info_t *ps_svc_cur_mb_info;
1469 deblk_mb_t *ps_cur_deblk_mb;
1470 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
1471 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
1472 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
1473 UWORD16 i2_pic_wdin_mbs = ps_dec->u2_frm_wd_in_mbs;
1474 WORD16 i2_cur_mb_addr;
1475 UWORD8 u1_mbaff;
1476 UWORD8 u1_num_mbs_next, u1_end_of_row, u1_tfr_n_mb;
1477 WORD32 ret = OK;
1478 dec_slice_svc_ext_params_t *ps_svc_slice_params = NULL;
1479
1480 ps_svc_slice_params = &ps_svc_lyr_dec->s_svc_slice_params;
1481 ps_dec->u1_qp = ps_slice->u1_slice_qp;
1482 ih264d_update_qp(ps_dec, 0);
1483 u1_mbaff = ps_slice->u1_mbaff_frame_flag;
1484
1485 u1_mb_idx = ps_dec->u1_mb_idx;
1486 u1_num_mbs = u1_mb_idx;
1487 uc_more_data_flag = 1;
1488 i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff;
1489
1490 do
1491 {
1492 UWORD8 u1_mb_type;
1493 ps_dec->pv_prev_mb_parse_tu_coeff_data = ps_dec->pv_parse_tu_coeff_data;
1494 if(i2_cur_mb_addr > ps_dec->ps_cur_sps->u2_max_mb_addr)
1495 {
1496 break;
1497 }
1498
1499 ps_cur_mb_info = ps_dec->ps_nmb_info + u1_num_mbs;
1500 ps_svc_cur_mb_info = ps_svc_lyr_dec->ps_svc_nmb_info + u1_num_mbs;
1501 ps_dec->u4_num_mbs_cur_nmb = u1_num_mbs;
1502 ps_dec->u4_num_pmbair = (u1_num_mbs >> u1_mbaff);
1503 ps_cur_mb_info->u1_end_of_slice = 0;
1504 /***************************************************************/
1505 /* Get the required information for decoding of MB */
1506 /* mb_x, mb_y , neighbour availablity, */
1507 /***************************************************************/
1508 ps_dec->pf_get_mb_info(ps_dec, i2_cur_mb_addr, ps_cur_mb_info, 0);
1509 ps_svc_cur_mb_info->u1_crop_window_flag =
1510 *(ps_svc_lyr_dec->pu1_crop_wnd_flag + ps_cur_mb_info->u2_mbx +
1511 (ps_cur_mb_info->u2_mby * ps_dec->u2_frm_wd_in_mbs));
1512
1513 /***************************************************************/
1514 /* Set the deblocking parameters for this MB */
1515 /***************************************************************/
1516 ps_cur_deblk_mb = ps_dec->ps_deblk_mbn + u1_num_mbs;
1517 if(ps_dec->u4_app_disable_deblk_frm == 0)
1518 ih264d_set_deblocking_parameters(ps_cur_deblk_mb, ps_slice,
1519 ps_dec->u1_mb_ngbr_availablity,
1520 ps_dec->u1_cur_mb_fld_dec_flag);
1521
1522 ps_svc_cur_mb_info->u1_base_mode_flag = 0;
1523 if(ps_svc_cur_mb_info->u1_crop_window_flag &&
1524 ps_svc_slice_params->u1_adaptive_base_mode_flag)
1525 {
1526 ps_svc_cur_mb_info->u1_base_mode_flag = ih264d_get_bit_h264(ps_bitstrm);
1527 COPYTHECONTEXT("SVC ext: u1_base_mode_flag", ps_cur_mb_info->u1_base_mode_flag);
1528 }
1529 else if(ps_svc_cur_mb_info->u1_crop_window_flag)
1530 {
1531 ps_svc_cur_mb_info->u1_base_mode_flag = ps_svc_slice_params->u1_default_base_mode_flag;
1532 }
1533
1534 /**************************************************************/
1535 /* Macroblock Layer Begins, Decode the u1_mb_type */
1536 /**************************************************************/
1537 if(!ps_svc_cur_mb_info->u1_base_mode_flag) /* Inlined ih264d_uev */
1538 {
1539 UWORD32 u4_bitstream_offset = *pu4_bitstrm_ofst;
1540 UWORD32 u4_word, u4_ldz, u4_temp;
1541
1542 /***************************************************************/
1543 /* Find leading zeros in next 32 bits */
1544 /***************************************************************/
1545 NEXTBITS_32(u4_word, u4_bitstream_offset, pu4_bitstrm_buf);
1546 u4_ldz = CLZ(u4_word);
1547 /* Flush the ps_bitstrm */
1548 u4_bitstream_offset += (u4_ldz + 1);
1549 /* Read the suffix from the ps_bitstrm */
1550 u4_word = 0;
1551 if(u4_ldz) GETBITS(u4_word, u4_bitstream_offset, pu4_bitstrm_buf, u4_ldz);
1552 *pu4_bitstrm_ofst = u4_bitstream_offset;
1553 u4_temp = ((1 << u4_ldz) + u4_word - 1);
1554 if(u4_temp > 25) return ERROR_MB_TYPE;
1555 u1_mb_type = u4_temp;
1556
1557 /* Inlined ih264d_uev */
1558 ps_cur_mb_info->u1_mb_type = u1_mb_type;
1559 COPYTHECONTEXT("u1_mb_type", u1_mb_type);
1560
1561 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_MB;
1562 }
1563 else
1564 {
1565 ps_cur_mb_info->u1_mb_type = MB_INFER;
1566 ps_cur_deblk_mb->u1_mb_type = ps_cur_deblk_mb->u1_mb_type | D_INTRA_IBL;
1567 }
1568
1569 /**************************************************************/
1570 /* Parse Macroblock data */
1571 /**************************************************************/
1572 u1_mb_type = ps_cur_mb_info->u1_mb_type;
1573 if(25 == u1_mb_type)
1574 {
1575 /* I_PCM_MB */
1576 ps_cur_mb_info->ps_curmb->u1_mb_type = I_PCM_MB;
1577 ret = ih264d_parse_ipcm_mb(ps_dec, ps_cur_mb_info, u1_num_mbs);
1578 if(ret != OK) return ret;
1579 ps_cur_deblk_mb->u1_mb_qp = 0;
1580 }
1581 else
1582 {
1583 ret = isvcd_parse_imb_cavlc(ps_svc_lyr_dec, ps_cur_mb_info, ps_svc_cur_mb_info,
1584 u1_num_mbs, u1_mb_type);
1585 if(ret != OK) return ret;
1586 ps_cur_deblk_mb->u1_mb_qp = ps_dec->u1_qp;
1587 }
1588
1589 if(ps_dec->u1_enable_mb_info)
1590 {
1591 ih264d_populate_mb_info_map(ps_dec, ps_cur_mb_info, ps_cur_mb_info->u2_mbx << 1,
1592 ps_cur_mb_info->u2_mby << 1, ps_cur_deblk_mb->u1_mb_qp);
1593 }
1594 uc_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
1595
1596 if(u1_mbaff)
1597 {
1598 ih264d_update_mbaff_left_nnz(ps_dec, ps_cur_mb_info);
1599 if(!uc_more_data_flag && (0 == (i2_cur_mb_addr & 1)))
1600 {
1601 return ERROR_EOB_FLUSHBITS_T;
1602 }
1603 }
1604 /**************************************************************/
1605 /* Get next Macroblock address */
1606 /**************************************************************/
1607 i2_cur_mb_addr++;
1608 /* Store the colocated information */
1609 {
1610 mv_pred_t *ps_mv_nmb_start = ps_dec->ps_mv_cur + (u1_num_mbs << 4);
1611 mv_pred_t s_mvPred = {{0, 0, 0, 0}, {-1, -1}, 0, 0};
1612 if(ps_mv_nmb_start)
1613 {
1614 ih264d_rep_mv_colz(ps_dec, &s_mvPred, ps_mv_nmb_start, 0,
1615 (UWORD8) (ps_dec->u1_cur_mb_fld_dec_flag << 1), 4, 4);
1616 }
1617 else
1618 {
1619 return NOT_OK;
1620 }
1621 }
1622 u1_num_mbs++;
1623
1624 /****************************************************************/
1625 /* Check for End Of Row */
1626 /****************************************************************/
1627 u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec->u2_mbx - 1;
1628 u1_end_of_row = (!u1_num_mbs_next) && (!(u1_mbaff && (u1_num_mbs & 0x01)));
1629 u1_tfr_n_mb =
1630 (u1_num_mbs == ps_dec->u1_recon_mb_grp) || u1_end_of_row || (!uc_more_data_flag);
1631 ps_cur_mb_info->u1_end_of_slice = (!uc_more_data_flag);
1632
1633 if(u1_tfr_n_mb || (!uc_more_data_flag))
1634 {
1635 if(ps_dec->u1_separate_parse)
1636 {
1637 ih264d_parse_tfr_nmb(ps_dec, u1_mb_idx, u1_num_mbs, u1_num_mbs_next, u1_tfr_n_mb,
1638 u1_end_of_row);
1639 ps_dec->ps_nmb_info += u1_num_mbs;
1640 ps_svc_lyr_dec->ps_svc_nmb_info += u1_num_mbs;
1641 }
1642 else
1643 {
1644 ret = isvcd_decode_recon_tfr_nmb_non_base_lyr(ps_svc_lyr_dec, u1_mb_idx, u1_num_mbs,
1645 u1_num_mbs_next, u1_tfr_n_mb,
1646 u1_end_of_row);
1647 if(ret != OK) return ret;
1648 }
1649 ps_dec->u2_total_mbs_coded += u1_num_mbs;
1650 if(u1_tfr_n_mb) u1_num_mbs = 0;
1651 u1_mb_idx = u1_num_mbs;
1652 ps_dec->u1_mb_idx = u1_num_mbs;
1653 }
1654 } while(uc_more_data_flag);
1655
1656 ps_dec->u4_num_mbs_cur_nmb = 0;
1657 ps_dec->ps_cur_slice->u4_mbs_in_slice = i2_cur_mb_addr - (u2_first_mb_in_slice << u1_mbaff);
1658
1659 return ret;
1660 }
1661
1662 /*!
1663 **************************************************************************
1664 * \if Function name : ParseIMbCab \endif
1665 *
1666 * \brief
1667 * This function parses CABAC syntax of a I MB. If 16x16 Luma DC transform
1668 * is also done here. Transformed Luma DC values are copied in their
1669 * 0th pixel location of corrosponding CoeffBlock.
1670 *
1671 * \return
1672 * 0 on Success and Error code otherwise
1673 **************************************************************************
1674 */
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)1675 WORD32 isvcd_parse_imb_cabac(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_mb_info_t *ps_cur_mb_info,
1676 dec_svc_mb_info_t *ps_svc_cur_mb_info, UWORD8 u1_mb_type)
1677 {
1678 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1679 WORD8 i1_delta_qp;
1680 UWORD8 u1_cbp;
1681 UWORD8 u1_offset;
1682 /* Variables for handling Cabac contexts */
1683 ctxt_inc_mb_info_t *p_curr_ctxt = ps_dec->ps_curr_ctxt_mb_info;
1684 ctxt_inc_mb_info_t *ps_left_ctxt = ps_dec->p_left_ctxt_mb_info;
1685 dec_bit_stream_t *const ps_bitstrm = ps_dec->ps_bitstrm;
1686 bin_ctxt_model_t *p_bin_ctxt;
1687 UWORD8 u1_intra_chrom_pred_mode;
1688 UWORD8 u1_dc_block_flag = 0;
1689 WORD32 ret;
1690
1691 ps_cur_mb_info->u1_yuv_dc_block_flag = 0;
1692
1693 if(ps_left_ctxt == ps_dec->ps_def_ctxt_mb_info)
1694 {
1695 ps_dec->pu1_left_yuv_dc_csbp[0] = 0xf;
1696 }
1697
1698 if(ps_dec->ps_cur_slice->u1_slice_type != I_SLICE)
1699 {
1700 MEMSET_16BYTES(&ps_dec->pu1_left_mv_ctxt_inc[0][0], 0);
1701 *((UWORD32 *) ps_dec->pi1_left_ref_idx_ctxt_inc) = 0;
1702 MEMSET_16BYTES(p_curr_ctxt->u1_mv, 0);
1703 memset(p_curr_ctxt->i1_ref_idx, 0, 4);
1704 }
1705
1706 /* default */
1707 ps_cur_mb_info->ps_curmb->u1_mb_type = P_MB;
1708 if(!ps_svc_cur_mb_info->u1_base_mode_flag)
1709 {
1710 if(u1_mb_type == I_4x4_MB)
1711 {
1712 ps_cur_mb_info->ps_curmb->u1_mb_type = I_4x4_MB;
1713 p_curr_ctxt->u1_mb_type = CAB_I4x4;
1714 u1_offset = 0;
1715 ps_cur_mb_info->u1_tran_form8x8 = 0;
1716 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1717 /*--------------------------------------------------------------------*/
1718 /* Read transform_size_8x8_flag if present */
1719 /*--------------------------------------------------------------------*/
1720 if(ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag)
1721 {
1722 ps_cur_mb_info->u1_tran_form8x8 =
1723 ih264d_parse_transform8x8flag_cabac(ps_dec, ps_cur_mb_info);
1724 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
1725 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
1726 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
1727 }
1728 else
1729 {
1730 p_curr_ctxt->u1_transform8x8_ctxt = 0;
1731 }
1732
1733 /*--------------------------------------------------------------------*/
1734 /* Read the IntraPrediction modes for LUMA */
1735 /*--------------------------------------------------------------------*/
1736 if(!ps_cur_mb_info->u1_tran_form8x8)
1737 {
1738 UWORD8 *pu1_temp;
1739 ih264d_read_intra_pred_modes_cabac(ps_dec,
1740 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
1741 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 16),
1742 ps_cur_mb_info->u1_tran_form8x8);
1743 pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
1744 pu1_temp += 32;
1745 ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
1746 }
1747 else
1748 {
1749 UWORD8 *pu1_temp;
1750 ih264d_read_intra_pred_modes_cabac(ps_dec,
1751 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data),
1752 ((UWORD8 *) ps_dec->pv_parse_tu_coeff_data + 4),
1753 ps_cur_mb_info->u1_tran_form8x8);
1754 pu1_temp = (UWORD8 *) ps_dec->pv_parse_tu_coeff_data;
1755 pu1_temp += 8;
1756 ps_dec->pv_parse_tu_coeff_data = (void *) pu1_temp;
1757 }
1758 /*--------------------------------------------------------------------*/
1759 /* Read the IntraPrediction mode for CHROMA */
1760 /*--------------------------------------------------------------------*/
1761 u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec);
1762 COPYTHECONTEXT("intra_chroma_pred_mode", u1_intra_chrom_pred_mode);
1763 p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode =
1764 u1_intra_chrom_pred_mode;
1765
1766 /*--------------------------------------------------------------------*/
1767 /* Read the Coded block pattern */
1768 /*--------------------------------------------------------------------*/
1769 u1_cbp = ih264d_parse_ctx_cbp_cabac(ps_dec);
1770 COPYTHECONTEXT("coded_block_pattern", u1_cbp);
1771 ps_cur_mb_info->u1_cbp = u1_cbp;
1772 p_curr_ctxt->u1_cbp = u1_cbp;
1773
1774 /*--------------------------------------------------------------------*/
1775 /* Read mb_qp_delta */
1776 /*--------------------------------------------------------------------*/
1777 if(ps_cur_mb_info->u1_cbp)
1778 {
1779 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
1780 if(ret != OK) return ret;
1781 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
1782 if(i1_delta_qp != 0)
1783 {
1784 ret = ih264d_update_qp(ps_dec, i1_delta_qp);
1785 if(ret != OK) return ret;
1786 }
1787 }
1788 else
1789 ps_dec->i1_prev_mb_qp_delta = 0;
1790 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
1791 }
1792 else
1793 {
1794 u1_offset = 1;
1795 ps_cur_mb_info->ps_curmb->u1_mb_type = I_16x16_MB;
1796 p_curr_ctxt->u1_mb_type = CAB_I16x16;
1797 ps_cur_mb_info->u1_tran_form8x8 = 0;
1798 p_curr_ctxt->u1_transform8x8_ctxt = 0;
1799 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1800 /*--------------------------------------------------------------------*/
1801 /* Read the IntraPrediction mode for CHROMA */
1802 /*--------------------------------------------------------------------*/
1803 u1_intra_chrom_pred_mode = ih264d_parse_chroma_pred_mode_cabac(ps_dec);
1804 if(u1_intra_chrom_pred_mode > 3) return ERROR_CHROMA_PRED_MODE;
1805
1806 COPYTHECONTEXT("Chroma intra_chroma_pred_mode pred mode", u1_intra_chrom_pred_mode);
1807 p_curr_ctxt->u1_intra_chroma_pred_mode = ps_cur_mb_info->u1_chroma_pred_mode =
1808 u1_intra_chrom_pred_mode;
1809
1810 /*--------------------------------------------------------------------*/
1811 /* Read the Coded block pattern */
1812 /*--------------------------------------------------------------------*/
1813 u1_cbp = gau1_ih264d_cbp_tab[(u1_mb_type - 1) >> 2];
1814 ps_cur_mb_info->u1_cbp = u1_cbp;
1815 p_curr_ctxt->u1_cbp = u1_cbp;
1816
1817 /*--------------------------------------------------------------------*/
1818 /* Read mb_qp_delta */
1819 /*--------------------------------------------------------------------*/
1820 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
1821 if(ret != OK) return ret;
1822 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
1823 if(i1_delta_qp != 0)
1824 {
1825 ret = ih264d_update_qp(ps_dec, i1_delta_qp);
1826 if(ret != OK) return ret;
1827 }
1828
1829 {
1830 WORD16 i_scaleFactor;
1831 WORD16 *pi2_scale_matrix_ptr;
1832 /*******************************************************************/
1833 /* for luma DC coefficients the scaling is done during the parsing */
1834 /* to preserve the precision */
1835 /*******************************************************************/
1836 if(ps_dec->s_high_profile.u1_scaling_present)
1837 {
1838 pi2_scale_matrix_ptr = ps_dec->s_high_profile.i2_scalinglist4x4[0];
1839 }
1840 else
1841 {
1842 i_scaleFactor = 16;
1843 pi2_scale_matrix_ptr = &i_scaleFactor;
1844 }
1845 {
1846 ctxt_inc_mb_info_t *ps_top_ctxt = ps_dec->p_top_ctxt_mb_info;
1847 UWORD8 uc_a, uc_b;
1848 UWORD32 u4_ctx_inc;
1849 INC_SYM_COUNT(&(ps_dec->s_cab_dec_env));
1850
1851 /* if MbAddrN not available then CondTermN = 1 */
1852 uc_b = ((ps_top_ctxt->u1_yuv_dc_csbp) & 0x01);
1853
1854 /* if MbAddrN not available then CondTermN = 1 */
1855 uc_a = ((ps_dec->pu1_left_yuv_dc_csbp[0]) & 0x01);
1856
1857 u4_ctx_inc = (uc_a + (uc_b << 1));
1858 {
1859 WORD16 pi2_dc_coef[16] = {0};
1860 tu_sblk4x4_coeff_data_t *ps_tu_4x4 =
1861 (tu_sblk4x4_coeff_data_t *) ps_dec->pv_parse_tu_coeff_data;
1862 WORD16 *pi2_coeff_block = (WORD16 *) ps_dec->pv_parse_tu_coeff_data;
1863
1864 p_bin_ctxt = (ps_dec->p_cbf_t[LUMA_DC_CTXCAT]) + u4_ctx_inc;
1865
1866 u1_dc_block_flag = ih264d_read_coeff4x4_cabac(
1867 ps_bitstrm, LUMA_DC_CTXCAT,
1868 ps_dec->p_significant_coeff_flag_t[LUMA_DC_CTXCAT], ps_dec, p_bin_ctxt);
1869
1870 /* Store coded_block_flag */
1871 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
1872 p_curr_ctxt->u1_yuv_dc_csbp |= u1_dc_block_flag;
1873 if(u1_dc_block_flag)
1874 {
1875 WORD32 pi4_tmp[16] = {0};
1876 memset(pi2_dc_coef, 0, sizeof(pi2_dc_coef));
1877 ih264d_unpack_coeff4x4_dc_4x4blk(ps_tu_4x4, pi2_dc_coef,
1878 ps_dec->pu1_inv_scan);
1879
1880 PROFILE_DISABLE_IQ_IT_RECON()
1881 ps_dec->pf_ihadamard_scaling_4x4(
1882 pi2_dc_coef, pi2_coeff_block, ps_dec->pu2_quant_scale_y,
1883 (UWORD16 *) pi2_scale_matrix_ptr, ps_dec->u1_qp_y_div6, pi4_tmp);
1884 pi2_coeff_block += 16;
1885 ps_dec->pv_parse_tu_coeff_data = (void *) pi2_coeff_block;
1886 SET_BIT(ps_cur_mb_info->u1_yuv_dc_block_flag, 0);
1887 }
1888 }
1889 }
1890 }
1891 }
1892 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
1893 ps_dec->pu1_left_yuv_dc_csbp[0] |= u1_dc_block_flag;
1894 }
1895 else
1896 {
1897 u1_offset = 0;
1898 /*--------------------------------------------------------------------*/
1899 /* Read the Coded block pattern */
1900 /*--------------------------------------------------------------------*/
1901 u1_cbp = ih264d_parse_ctx_cbp_cabac(ps_dec);
1902 COPYTHECONTEXT("coded_block_pattern", u1_cbp);
1903
1904 ps_cur_mb_info->u1_cbp = u1_cbp;
1905 p_curr_ctxt->u1_cbp = u1_cbp;
1906 p_curr_ctxt->u1_yuv_dc_csbp &= 0xFE;
1907 ps_dec->pu1_left_yuv_dc_csbp[0] &= 0x6;
1908 p_curr_ctxt->u1_mb_type = CAB_INFERRED;
1909 p_curr_ctxt->u1_intra_chroma_pred_mode = 0;
1910 ps_cur_mb_info->u1_tran_form8x8 = 0;
1911 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = 0;
1912
1913 /*--------------------------------------------------------------------*/
1914 /* Read transform_size_8x8_flag if present */
1915 /*--------------------------------------------------------------------*/
1916 if((ps_dec->ps_cur_pps->i4_transform_8x8_mode_flag) && (u1_cbp & 0xf))
1917 {
1918 ps_cur_mb_info->u1_tran_form8x8 =
1919 ih264d_parse_transform8x8flag_cabac(ps_dec, ps_cur_mb_info);
1920 COPYTHECONTEXT("transform_size_8x8_flag", ps_cur_mb_info->u1_tran_form8x8);
1921 p_curr_ctxt->u1_transform8x8_ctxt = ps_cur_mb_info->u1_tran_form8x8;
1922 ps_cur_mb_info->ps_curmb->u1_tran_form8x8 = ps_cur_mb_info->u1_tran_form8x8;
1923 }
1924 else
1925 {
1926 p_curr_ctxt->u1_transform8x8_ctxt = 0;
1927 }
1928
1929 /*--------------------------------------------------------------------*/
1930 /* Read mb_qp_delta */
1931 /*--------------------------------------------------------------------*/
1932 if(ps_cur_mb_info->u1_cbp)
1933 {
1934 ret = ih264d_parse_mb_qp_delta_cabac(ps_dec, &i1_delta_qp);
1935 if(ret != OK) return ret;
1936 COPYTHECONTEXT("mb_qp_delta", i1_delta_qp);
1937 if(i1_delta_qp != 0)
1938 {
1939 ret = ih264d_update_qp(ps_dec, i1_delta_qp);
1940 if(ret != OK) return ret;
1941 }
1942 }
1943 else
1944 ps_dec->i1_prev_mb_qp_delta = 0;
1945 }
1946
1947 ih264d_parse_residual4x4_cabac(ps_dec, ps_cur_mb_info, u1_offset);
1948 if(EXCEED_OFFSET(ps_bitstrm)) return ERROR_EOB_TERMINATE_T;
1949 return OK;
1950 }
1951
1952 /*!
1953 **************************************************************************
1954 * \if Function name : isvcd_decode_islice \endif
1955 *
1956 * \brief
1957 * Decodes an I Slice
1958 *
1959 *
1960 * \return
1961 * 0 on Success and Error code otherwise
1962 **************************************************************************
1963 */
isvcd_parse_islice(svc_dec_lyr_struct_t * ps_svc_lyr_dec,UWORD16 u2_first_mb_in_slice)1964 WORD32 isvcd_parse_islice(svc_dec_lyr_struct_t *ps_svc_lyr_dec, UWORD16 u2_first_mb_in_slice)
1965 {
1966 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1967 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1968 dec_slice_params_t *ps_slice = ps_dec->ps_cur_slice;
1969 UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
1970 UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
1971 UWORD32 u4_temp;
1972 WORD32 i_temp;
1973 WORD32 ret;
1974
1975 /*--------------------------------------------------------------------*/
1976 /* Read remaining contents of the slice header */
1977 /*--------------------------------------------------------------------*/
1978 /* dec_ref_pic_marking function */
1979 /* G050 */
1980 if(ps_slice->u1_nal_ref_idc != 0)
1981 {
1982 if(!ps_dec->ps_dpb_cmds->u1_dpb_commands_read)
1983 {
1984 dec_pic_params_t *ps_pps = ps_dec->ps_cur_pps;
1985 dec_seq_params_t *ps_sps_tmp = ps_pps->ps_sps;
1986 UWORD8 u1_nal_unit_type_tmp = ps_dec->u1_nal_unit_type;
1987
1988 ps_pps->ps_sps = ps_dec->ps_cur_sps;
1989 if(ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag)
1990 ps_dec->u1_nal_unit_type = IDR_SLICE_NAL;
1991
1992 i_temp = ih264d_read_mmco_commands(ps_dec);
1993 ps_pps->ps_sps = ps_sps_tmp;
1994 ps_dec->u1_nal_unit_type = u1_nal_unit_type_tmp;
1995
1996 if(i_temp < 0)
1997 {
1998 return ERROR_DBP_MANAGER_T;
1999 }
2000 ps_dec->u4_bitoffset = i_temp;
2001 }
2002 else
2003 ps_dec->ps_bitstrm->u4_ofst += ps_dec->u4_bitoffset;
2004 }
2005
2006 {
2007 /* G050 */
2008 /* Read slice_qp_delta */
2009 WORD64 i8_temp =
2010 (WORD64) ps_pps->u1_pic_init_qp + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2011 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
2012 ps_slice->u1_slice_qp = (UWORD8) i8_temp;
2013 COPYTHECONTEXT("SH: slice_qp_delta", ps_slice->u1_slice_qp - ps_pps->u1_pic_init_qp);
2014 }
2015 if(ps_pps->u1_deblocking_filter_parameters_present_flag == 1)
2016 {
2017 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
2018 COPYTHECONTEXT("SH: disable_deblocking_filter_idc", u4_temp);
2019
2020 if(u4_temp > SLICE_BOUNDARY_DBLK_DISABLED)
2021 {
2022 return ERROR_INV_SLICE_HDR_T;
2023 }
2024 ps_slice->u1_disable_dblk_filter_idc = u4_temp;
2025 if(u4_temp != 1)
2026 {
2027 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
2028 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
2029 {
2030 return ERROR_INV_SLICE_HDR_T;
2031 }
2032 ps_slice->i1_slice_alpha_c0_offset = i_temp;
2033 COPYTHECONTEXT("SH: slice_alpha_c0_offset_div2",
2034 ps_slice->i1_slice_alpha_c0_offset >> 1);
2035
2036 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf) << 1;
2037 if((MIN_DBLK_FIL_OFF > i_temp) || (i_temp > MAX_DBLK_FIL_OFF))
2038 {
2039 return ERROR_INV_SLICE_HDR_T;
2040 }
2041 ps_slice->i1_slice_beta_offset = i_temp;
2042 COPYTHECONTEXT("SH: slice_beta_offset_div2", ps_slice->i1_slice_beta_offset >> 1);
2043 }
2044 else
2045 {
2046 ps_slice->i1_slice_alpha_c0_offset = 0;
2047 ps_slice->i1_slice_beta_offset = 0;
2048 }
2049 }
2050 else
2051 {
2052 ps_slice->u1_disable_dblk_filter_idc = 0;
2053 ps_slice->i1_slice_alpha_c0_offset = 0;
2054 ps_slice->i1_slice_beta_offset = 0;
2055 }
2056
2057 /* Initialization to check if number of motion vector per 2 Mbs */
2058 /* are exceeding the range or not */
2059 ps_dec->u2_mv_2mb[0] = 0;
2060 ps_dec->u2_mv_2mb[1] = 0;
2061
2062 /*set slice header cone to 2 ,to indicate correct header*/
2063 ps_dec->u1_slice_header_done = 2;
2064 if(ps_pps->u1_entropy_coding_mode)
2065 {
2066 SWITCHOFFTRACE;
2067 SWITCHONTRACECABAC;
2068 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
2069 {
2070 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff;
2071 }
2072 else
2073 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cabac_nonmbaff;
2074
2075 ret = isvcd_parse_islice_data_cabac(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
2076 if(ret != OK) return ret;
2077 SWITCHONTRACE;
2078 SWITCHOFFTRACECABAC;
2079 }
2080 else
2081 {
2082 if(ps_dec->ps_cur_slice->u1_mbaff_frame_flag)
2083 {
2084 ps_dec->pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff;
2085 }
2086 else
2087 ps_dec->pf_get_mb_info = isvcd_get_mb_info_cavlc_nonmbaff;
2088 ret = isvcd_parse_islice_data_cavlc(ps_svc_lyr_dec, ps_slice, u2_first_mb_in_slice);
2089 if(ret != OK) return ret;
2090 }
2091
2092 return OK;
2093 }
2094