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_headers.c
24 *
25 * @brief
26 * Contains High level syntax[above slice] parsing routines
27 *
28 * @author
29 * Kishore
30 *
31 * @par List of Functions:
32 * - isvcd_set_default_seq_svc_ext()
33 * - isvcd_parse_subset_sps()
34 * - isvcd_dec_ref_base_pic_marking()
35 * - isvcd_parse_nal_unit()
36 * - isvcd_parse_sps()
37 * - isvcd_parse_pps()
38 *
39 * @remarks
40 * None
41 *
42 *******************************************************************************
43 */
44
45 #include <string.h>
46 #include <assert.h>
47
48 #include "ih264_typedefs.h"
49 #include "ih264_defs.h"
50 #include "ih264_macros.h"
51 #include "ih264_platform_macros.h"
52 #include "ih264d_bitstrm.h"
53 #include "isvcd_structs.h"
54 #include "ih264d_parse_cavlc.h"
55 #include "ih264d_defs.h"
56 #include "ih264d_parse_slice.h"
57 #include "ih264d_tables.h"
58 #include "ih264d_utils.h"
59 #include "ih264d_nal.h"
60 #include "ih264d_deblocking.h"
61 #include "ih264d_mem_request.h"
62 #include "ih264d_debug.h"
63 #include "ih264_debug.h"
64 #include "ih264d_error_handler.h"
65 #include "ih264d_mb_utils.h"
66 #include "ih264d_sei.h"
67 #include "ih264d_vui.h"
68 #include "ih264d_thread_parse_decode.h"
69 #include "ih264d_thread_compute_bs.h"
70 #include "ih264d_quant_scaling.h"
71 #include "ih264d_defs.h"
72 #include "ivd.h"
73 #include "ih264d_parse_islice.h"
74 #include "isvcd_parse_slice.h"
75 #include "ih264d_process_bslice.h"
76 #include "ih264d_process_pslice.h"
77 #include "isvcd_vui.h"
78
79 WORD32 ih264d_access_unit_delimiter_rbsp(dec_struct_t *ps_dec);
80 void ih264d_get_pre_sei_params(dec_struct_t *ps_dec, UWORD8 u1_nal_unit_type);
81 UWORD32 ih264d_correct_level_idc(UWORD32 u4_level_idc, UWORD32 u4_total_mbs);
82 WORD32 ih264d_parse_filler_data(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm);
83 void ih264d_parse_end_of_stream(dec_struct_t *ps_dec);
84 WORD32 ih264d_parse_slice_partition(dec_struct_t *ps_dec, dec_bit_stream_t *ps_bitstrm);
85 /*!
86 **************************************************************************
87 * \if Function name : isvcd_set_default_seq_svc_ext \en
88 dif
89 *
90 * \brief
91 * Sets the default values for the svc params in the SVC bitstream
92 *
93 * \return
94 **************************************************************************
95 */
isvcd_set_default_seq_svc_ext(dec_subset_seq_params_t * ps_seq_svc_ext)96 void isvcd_set_default_seq_svc_ext(dec_subset_seq_params_t *ps_seq_svc_ext)
97 {
98 ps_seq_svc_ext->u1_inter_layer_deblocking_filter_control_present_flag = 0;
99 ps_seq_svc_ext->u1_extended_spatial_scalability_idc = 0;
100 ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag = 1;
101 ps_seq_svc_ext->u1_chroma_phase_y_plus1 = 1;
102 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag =
103 ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag;
104 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 = ps_seq_svc_ext->u1_chroma_phase_y_plus1;
105 ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset = 0;
106 ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset = 0;
107 ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset = 0;
108 ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset = 0;
109 ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag =
110 ps_seq_svc_ext->u1_adaptive_tcoeff_level_prediction_flag = 0;
111 ps_seq_svc_ext->u1_slice_header_restriction_flag = 0;
112 ps_seq_svc_ext->u1_svc_vui_parameters_present_flag = 0;
113 }
114 /*!
115 **************************************************************************
116 * \if Function name : isvcd_parse_subset_sps \en
117 dif
118 *
119 * \brief
120 * Decodes Sequence parameter set from the SVC bitstream
121 *
122 * \return
123 * 0 on Success and Error code otherwise
124 **************************************************************************
125 */
isvcd_parse_subset_sps(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_bit_stream_t * ps_bitstrm)126 WORD32 isvcd_parse_subset_sps(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_bit_stream_t *ps_bitstrm)
127 {
128 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
129 UWORD8 i;
130 dec_seq_params_t *ps_seq = NULL;
131 dec_svc_seq_params_t *ps_subset_seq = NULL;
132 dec_subset_seq_params_t *ps_seq_svc_ext;
133 UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id, u1_mb_aff_flag = 0;
134 UWORD16 i2_max_frm_num;
135 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
136 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
137 UWORD8 u1_frm, uc_constraint_set0_flag, uc_constraint_set1_flag, uc_constraint_set2_flag;
138 WORD32 i4_cropped_ht, i4_cropped_wd;
139 UWORD32 u4_temp;
140 UWORD64 u8_temp;
141 UWORD32 u4_pic_height_in_map_units, u4_pic_width_in_mbs;
142 UWORD32 u2_pic_wd = 0;
143 UWORD32 u2_pic_ht = 0;
144 UWORD32 u2_frm_wd_y = 0;
145 UWORD32 u2_frm_ht_y = 0;
146 UWORD32 u2_frm_wd_uv = 0;
147 UWORD32 u2_frm_ht_uv = 0;
148 UWORD32 u2_crop_offset_y = 0;
149 UWORD32 u2_crop_offset_uv = 0;
150 WORD32 ret;
151 /* High profile related syntax element */
152 WORD32 i4_i;
153 /* G050 */
154 UWORD8 u1_frame_cropping_flag,
155 u1_frame_cropping_rect_left_ofst = 0, u1_frame_cropping_rect_right_ofst = 0,
156 u1_frame_cropping_rect_top_ofst = 0, u1_frame_cropping_rect_bottom_ofst = 0;
157 /* G050 */
158 /*--------------------------------------------------------------------*/
159 /* Decode seq_parameter_set_id and profile and level values */
160 /*--------------------------------------------------------------------*/
161 SWITCHONTRACE;
162 u1_profile_idc = ih264d_get_bits_h264(ps_bitstrm, 8);
163 COPYTHECONTEXT("SPS: profile_idc", u1_profile_idc);
164
165 /* G050 */
166 uc_constraint_set0_flag = ih264d_get_bit_h264(ps_bitstrm);
167 uc_constraint_set1_flag = ih264d_get_bit_h264(ps_bitstrm);
168 uc_constraint_set2_flag = ih264d_get_bit_h264(ps_bitstrm);
169 UNUSED(uc_constraint_set1_flag);
170 UNUSED(uc_constraint_set2_flag);
171
172 /*****************************************************/
173 /* Read 5 bits for uc_constraint_set3_flag (1 bit) */
174 /* and reserved_zero_4bits (4 bits) - Sushant */
175 /*****************************************************/
176 ih264d_get_bits_h264(ps_bitstrm, 5);
177 /* G050 */
178 u1_level_idc = (UWORD8) ih264d_get_bits_h264(ps_bitstrm, 8);
179 COPYTHECONTEXT("SPS: u4_level_idc", u1_level_idc);
180
181 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
182 if(u4_temp & MASK_ERR_SEQ_SET_ID) return ERROR_INV_SPS_PPS_T;
183 u1_seq_parameter_set_id = u4_temp;
184 COPYTHECONTEXT("SPS: seq_parameter_set_id", u1_seq_parameter_set_id);
185
186 if(u1_seq_parameter_set_id >= MAX_NUM_SEQ_PARAMS) return ERROR_INV_SPS_PPS_T;
187
188 /*--------------------------------------------------------------------*/
189 /* Find an seq param entry in seqparam array of decStruct */
190 /*--------------------------------------------------------------------*/
191 ps_subset_seq = ps_svc_lyr_dec->pv_scratch_subset_sps;
192 memset(ps_subset_seq, 0, sizeof(dec_svc_seq_params_t));
193 ps_seq = ps_dec->pv_scratch_sps_pps;
194 memset(ps_seq, 0, sizeof(dec_seq_params_t));
195
196 if(ps_dec->i4_header_decoded & 1)
197 {
198 if(NULL != ps_dec->ps_cur_sps)
199 *ps_seq = *ps_dec->ps_cur_sps;
200 else
201 return ERROR_INV_SPS_PPS_T;
202 }
203
204 ps_seq->u1_profile_idc = u1_profile_idc;
205 ps_seq->u1_level_idc = u1_level_idc;
206 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id;
207
208 /* subset_seq_sps_will be stored from location 32 : MAX_NUM_SEQ_PARAMS*/
209 u1_seq_parameter_set_id += MAX_NUM_SEQ_PARAMS;
210 ps_subset_seq->ps_seq = &ps_dec->ps_sps[u1_seq_parameter_set_id];
211
212 if((ps_dec->i4_header_decoded & 1) &&
213 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
214 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_profile_idc != u1_profile_idc))
215 {
216 ps_dec->u1_res_changed = 1;
217 return IVD_RES_CHANGED;
218 }
219
220 if((ps_dec->i4_header_decoded & 1) &&
221 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
222 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_level_idc != u1_level_idc))
223 {
224 ps_dec->u1_res_changed = 1;
225 return IVD_RES_CHANGED;
226 }
227 /*******************************************************************/
228 /* Initializations for high profile - Sushant */
229 /*******************************************************************/
230 ps_seq->i4_chroma_format_idc = 1;
231 ps_seq->i4_bit_depth_luma_minus8 = 0;
232 ps_seq->i4_bit_depth_chroma_minus8 = 0;
233 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0;
234 ps_seq->i4_seq_scaling_matrix_present_flag = 0;
235 if(u1_profile_idc == HIGH_PROFILE_IDC || u1_profile_idc == SCALABLE_BASELINE_PROFILE_IDC ||
236 u1_profile_idc == SCALABLE_HIGH_PROFILE_IDC)
237 {
238 /* reading chroma_format_idc */
239 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
240
241 /* Monochrome is not supported */
242 if(ps_seq->i4_chroma_format_idc != 1)
243 {
244 return ERROR_FEATURE_UNAVAIL;
245 }
246
247 /* reading bit_depth_luma_minus8 */
248 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
249
250 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
251 {
252 return ERROR_FEATURE_UNAVAIL;
253 }
254
255 /* reading bit_depth_chroma_minus8 */
256 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
257
258 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
259 {
260 return ERROR_FEATURE_UNAVAIL;
261 }
262
263 /* reading qpprime_y_zero_transform_bypass_flag */
264 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = (WORD32) ih264d_get_bit_h264(ps_bitstrm);
265
266 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
267 {
268 return ERROR_INV_SPS_PPS_T;
269 }
270
271 /* reading seq_scaling_matrix_present_flag */
272 ps_seq->i4_seq_scaling_matrix_present_flag = (WORD32) ih264d_get_bit_h264(ps_bitstrm);
273
274 if(ps_seq->i4_seq_scaling_matrix_present_flag)
275 {
276 for(i4_i = 0; i4_i < 8; i4_i++)
277 {
278 ps_seq->u1_seq_scaling_list_present_flag[i4_i] = ih264d_get_bit_h264(ps_bitstrm);
279
280 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */
281 /* before calling scaling list */
282 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0;
283
284 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i])
285 {
286 if(i4_i < 6)
287 {
288 ret = ih264d_scaling_list(ps_seq->i2_scalinglist4x4[i4_i], 16,
289 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
290 ps_bitstrm);
291 }
292 else
293 {
294 ret = ih264d_scaling_list(ps_seq->i2_scalinglist8x8[i4_i - 6], 64,
295 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
296 ps_bitstrm);
297 }
298 if(ret != OK)
299 {
300 return ret;
301 }
302 }
303 }
304 }
305 }
306 /*--------------------------------------------------------------------*/
307 /* Decode MaxFrameNum */
308 /*--------------------------------------------------------------------*/
309 u8_temp = (UWORD64) 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
310 if(u8_temp > MAX_BITS_IN_FRAME_NUM)
311 {
312 return ERROR_INV_SPS_PPS_T;
313 }
314 ps_seq->u1_bits_in_frm_num = (UWORD8) u8_temp;
315 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4", (ps_seq->u1_bits_in_frm_num - 4));
316
317 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num));
318 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1;
319 /*--------------------------------------------------------------------*/
320 /* Decode picture order count and related values */
321 /*--------------------------------------------------------------------*/
322 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
323
324 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE)
325 {
326 return ERROR_INV_POC_TYPE_T;
327 }
328 ps_seq->u1_pic_order_cnt_type = u4_temp;
329 COPYTHECONTEXT("SPS: pic_order_cnt_type", ps_seq->u1_pic_order_cnt_type);
330
331 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1;
332 if(ps_seq->u1_pic_order_cnt_type == 0)
333 {
334 u8_temp = (UWORD64) 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
335 if(u8_temp > MAX_BITS_IN_POC_LSB)
336 {
337 return ERROR_INV_SPS_PPS_T;
338 }
339 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = (UWORD8) u8_temp;
340 ps_seq->i4_max_pic_order_cntLsb = (1 << u8_temp);
341 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4", (u8_temp - 4));
342 }
343 else if(ps_seq->u1_pic_order_cnt_type == 1)
344 {
345 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264(ps_bitstrm);
346 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag",
347 ps_seq->u1_delta_pic_order_always_zero_flag);
348
349 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
350 COPYTHECONTEXT("SPS: offset_for_non_ref_pic", ps_seq->i4_ofst_for_non_ref_pic);
351
352 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
353 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field",
354 ps_seq->i4_ofst_for_top_to_bottom_field);
355
356 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
357 if(u4_temp > 255) return ERROR_INV_SPS_PPS_T;
358 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp;
359 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle",
360 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle);
361
362 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++)
363 {
364 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
365 COPYTHECONTEXT("SPS: offset_for_ref_frame", ps_seq->i4_ofst_for_ref_frame[i]);
366 }
367 }
368
369 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
370
371 if((u4_temp > H264_MAX_REF_PICS))
372 {
373 return ERROR_NUM_REF;
374 }
375
376 /* Compare with older num_ref_frames is header is already once */
377 if((ps_dec->i4_header_decoded & 1) &&
378 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
379 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_num_ref_frames != u4_temp))
380 {
381 ps_dec->u1_res_changed = 1;
382 return IVD_RES_CHANGED;
383 }
384 ps_seq->u1_num_ref_frames = u4_temp;
385 COPYTHECONTEXT("SPS: num_ref_frames", ps_seq->u1_num_ref_frames);
386
387 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264(ps_bitstrm);
388 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag",
389 ps_seq->u1_gaps_in_frame_num_value_allowed_flag);
390 /* SVC_DEC_REVIEW */
391 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = 0;
392
393 /*--------------------------------------------------------------------*/
394 /* Decode FrameWidth and FrameHeight and related values */
395 /*--------------------------------------------------------------------*/
396 u8_temp = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
397 /* Check for unsupported resolutions*/
398 if(u8_temp > (H264_MAX_FRAME_WIDTH >> 4))
399 {
400 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
401 }
402 u4_pic_width_in_mbs = (UWORD32) u8_temp;
403 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1", u4_pic_width_in_mbs - 1);
404
405 u8_temp = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
406 if(u8_temp > (H264_MAX_FRAME_HEIGHT >> 4))
407 {
408 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
409 }
410 u4_pic_height_in_map_units = (UWORD32) u8_temp;
411
412 ps_seq->u2_frm_wd_in_mbs = u4_pic_width_in_mbs;
413 ps_seq->u2_frm_ht_in_mbs = u4_pic_height_in_map_units;
414
415 u2_pic_wd = (u4_pic_width_in_mbs << 4);
416 u2_pic_ht = (u4_pic_height_in_map_units << 4);
417 /*--------------------------------------------------------------------*/
418 /* Get the value of MaxMbAddress and Number of bits needed for it */
419 /*--------------------------------------------------------------------*/
420 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs * ps_seq->u2_frm_ht_in_mbs) - 1;
421
422 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1;
423
424 ps_seq->u1_level_idc = ih264d_correct_level_idc(u1_level_idc, ps_seq->u2_total_num_of_mbs);
425
426 u1_frm = ih264d_get_bit_h264(ps_bitstrm);
427
428 if((ps_dec->i4_header_decoded & 1) &&
429 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
430 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_frame_mbs_only_flag != u1_frm))
431 {
432 ps_dec->u1_res_changed = 1;
433 return IVD_RES_CHANGED;
434 }
435 ps_seq->u1_frame_mbs_only_flag = u1_frm;
436
437 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm);
438
439 if(!u1_frm) u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm);
440 if((ps_dec->i4_header_decoded & 1) &&
441 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
442 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_mb_aff_flag != u1_mb_aff_flag))
443 {
444 ps_dec->u1_res_changed = 1;
445 return IVD_RES_CHANGED;
446 }
447 if(!u1_frm)
448 {
449 u2_pic_ht <<= 1;
450 ps_seq->u1_mb_aff_flag = u1_mb_aff_flag;
451 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag", ps_seq->u1_mb_aff_flag);
452 }
453 else
454 ps_seq->u1_mb_aff_flag = 0;
455
456 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm);
457
458 COPYTHECONTEXT("SPS: direct_8x8_inference_flag", ps_seq->u1_direct_8x8_inference_flag);
459
460 /* G050 */
461 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm);
462 COPYTHECONTEXT("SPS: frame_cropping_flag", u1_frame_cropping_flag);
463
464 if(u1_frame_cropping_flag)
465 {
466 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
467 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset", u1_frame_cropping_rect_left_ofst);
468 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
469 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset", u1_frame_cropping_rect_right_ofst);
470 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
471 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset", u1_frame_cropping_rect_top_ofst);
472 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
473 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset",
474 u1_frame_cropping_rect_bottom_ofst);
475 }
476 /* G050 */
477 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
478 COPYTHECONTEXT("SPS: vui_parameters_present_flag", ps_seq->u1_vui_parameters_present_flag);
479
480 u2_frm_wd_y = u2_pic_wd + (UWORD8) (PAD_LEN_Y_H << 1);
481 if(1 == ps_dec->u4_share_disp_buf)
482 {
483 if(ps_dec->u4_app_disp_width > u2_frm_wd_y) u2_frm_wd_y = ps_dec->u4_app_disp_width;
484 }
485
486 u2_frm_ht_y = u2_pic_ht + (UWORD8) (PAD_LEN_Y_V << 2);
487 u2_frm_wd_uv = u2_pic_wd + (UWORD8) (PAD_LEN_UV_H << 2);
488 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y);
489
490 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8) (PAD_LEN_UV_V << 2);
491 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1));
492
493 /* Calculate display picture width, height and start u4_ofst from YUV420 */
494 /* pictute buffers as per cropping information parsed above */
495 {
496 UWORD16 u2_rgt_ofst = 0;
497 UWORD16 u2_lft_ofst = 0;
498 UWORD16 u2_top_ofst = 0;
499 UWORD16 u2_btm_ofst = 0;
500 UWORD8 u1_frm_mbs_flag;
501 UWORD8 u1_vert_mult_factor;
502
503 if(u1_frame_cropping_flag)
504 {
505 /* Calculate right and left u4_ofst for cropped picture */
506 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1;
507 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1;
508
509 /* Know frame MBs only u4_flag */
510 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag);
511
512 /* Simplify the vertical u4_ofst calculation from field/frame */
513 u1_vert_mult_factor = (2 - u1_frm_mbs_flag);
514
515 /* Calculate bottom and top u4_ofst for cropped picture */
516 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst << u1_vert_mult_factor);
517 u2_top_ofst = (u1_frame_cropping_rect_top_ofst << u1_vert_mult_factor);
518 }
519
520 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/
521 /* cropped picture buffer */
522 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst);
523 u2_crop_offset_uv =
524 (u2_frm_wd_uv * (u2_top_ofst >> 1)) + (u2_lft_ofst >> 1) * YUV420SP_FACTOR;
525 /* Calculate the display picture width and height based on crop */
526 /* information */
527 i4_cropped_ht = (WORD32) u2_pic_ht - (WORD32) (u2_btm_ofst + u2_top_ofst);
528 i4_cropped_wd = (WORD32) u2_pic_wd - (WORD32) (u2_rgt_ofst + u2_lft_ofst);
529
530 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE))
531 {
532 return ERROR_INV_SPS_PPS_T;
533 }
534
535 if((ps_dec->i4_header_decoded & 1) &&
536 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
537 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_wd != u2_pic_wd))
538 {
539 ps_dec->u1_res_changed = 1;
540 return IVD_RES_CHANGED;
541 }
542
543 if((ps_dec->i4_header_decoded & 1) &&
544 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
545 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_disp_width != i4_cropped_wd))
546 {
547 ps_dec->u1_res_changed = 1;
548 return IVD_RES_CHANGED;
549 }
550
551 if((ps_dec->i4_header_decoded & 1) &&
552 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
553 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_ht != u2_pic_ht))
554 {
555 ps_dec->u1_res_changed = 1;
556 return IVD_RES_CHANGED;
557 }
558
559 if((ps_dec->i4_header_decoded & 1) &&
560 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
561 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_disp_height != i4_cropped_ht))
562 {
563 ps_dec->u1_res_changed = 1;
564 return IVD_RES_CHANGED;
565 }
566 /* Check again for unsupported resolutions with updated values*/
567 if((u2_pic_wd > SVCD_MAX_FRAME_WIDTH) || (u2_pic_ht > SVCD_MAX_FRAME_HEIGHT) ||
568 (u2_pic_wd < SVCD_MIN_FRAME_WIDTH) || (u2_pic_ht < SVCD_MIN_FRAME_HEIGHT) ||
569 (u2_pic_wd * (UWORD32) u2_pic_ht > SVCD_MAX_FRAME_SIZE))
570 {
571 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
572 }
573
574 /* If MBAff is enabled, decoder support is limited to streams with
575 * width less than half of H264_MAX_FRAME_WIDTH.
576 * In case of MBAff decoder processes two rows at a time
577 */
578 if((u2_pic_wd << ps_seq->u1_mb_aff_flag) > H264_MAX_FRAME_WIDTH)
579 {
580 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
581 }
582 }
583
584 if(1 == ps_seq->u1_vui_parameters_present_flag)
585 {
586 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm);
587 if(ret != OK) return ret;
588 }
589 ps_seq_svc_ext = &ps_subset_seq->s_sps_svc_ext;
590
591 isvcd_set_default_seq_svc_ext(ps_seq_svc_ext);
592
593 if(SCALABLE_BASELINE_PROFILE_IDC == ps_seq->u1_profile_idc ||
594 SCALABLE_HIGH_PROFILE_IDC == ps_seq->u1_profile_idc)
595 {
596 SWITCHONTRACE;
597 ps_seq_svc_ext->u1_inter_layer_deblocking_filter_control_present_flag =
598 ih264d_get_bit_h264(ps_bitstrm);
599 COPYTHECONTEXT("SPS_EXt: u1_inter_layer_deblocking_filter_control_present_flag",
600 ps_seq_svc_ext->u1_inter_layer_deblocking_filter_control_present_flag);
601
602 ps_seq_svc_ext->u1_extended_spatial_scalability_idc = ih264d_get_bits_h264(ps_bitstrm, 2);
603 COPYTHECONTEXT("SPS_EXt: u1_extended_spatial_scalability_idc",
604 ps_seq_svc_ext->u1_extended_spatial_scalability_idc);
605
606 /* u1_extended_spatial_scalability_idc value 0, 1 and 2 are supported */
607 if(ps_seq_svc_ext->u1_extended_spatial_scalability_idc > 2)
608 {
609 return ERROR_SVC_INV_SUBSET_SPS;
610 }
611
612 /* ChromaArrayType = i4_chroma_format_idc if separate_colour_plane_flag =
613 * 0 for all chroma format except 4:4:4 */
614 if(1 == ps_seq->i4_chroma_format_idc || 2 == ps_seq->i4_chroma_format_idc)
615 {
616 ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag = ih264d_get_bit_h264(ps_bitstrm);
617 COPYTHECONTEXT("SPS_EXt: u1_chroma_phase_x_plus1_flag",
618 ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag);
619 }
620
621 if(1 == ps_seq->i4_chroma_format_idc)
622 {
623 ps_seq_svc_ext->u1_chroma_phase_y_plus1 = ih264d_get_bits_h264(ps_bitstrm, 2);
624 COPYTHECONTEXT("SPS_EXt: u1_chroma_phase_y_plus1",
625 ps_seq_svc_ext->u1_chroma_phase_y_plus1);
626
627 if(ps_seq_svc_ext->u1_chroma_phase_y_plus1 >= 3)
628 {
629 return ERROR_SVC_INV_SUBSET_SPS;
630 }
631 }
632
633 /* inferred values not covered in isvcd_set_default_seq_svc_ext*/
634 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag =
635 ps_seq_svc_ext->u1_chroma_phase_x_plus1_flag;
636 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 =
637 ps_seq_svc_ext->u1_chroma_phase_y_plus1;
638
639 if(1 == ps_seq_svc_ext->u1_extended_spatial_scalability_idc)
640 {
641 if(ps_seq->i4_chroma_format_idc > 0)
642 {
643 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag =
644 ih264d_get_bit_h264(ps_bitstrm);
645 COPYTHECONTEXT("SPS_EXt: u1_seq_ref_layer_chroma_phase_x_plus1_flag",
646 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_x_plus1_flag);
647
648 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 =
649 ih264d_get_bits_h264(ps_bitstrm, 2);
650 COPYTHECONTEXT("SPS_EXt: u1_seq_ref_layer_chroma_phase_y_plus1",
651 ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1);
652
653 if(ps_seq_svc_ext->u1_seq_ref_layer_chroma_phase_y_plus1 >= 3)
654 {
655 return ERROR_SVC_INV_SUBSET_SPS;
656 }
657 }
658
659 ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset =
660 ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
661 COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_left_offset",
662 ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset);
663
664 if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset != 0)
665 {
666 return ERROR_SVC_INV_SUBSET_SPS;
667 }
668
669 if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset >= MAX_SCLD_REF_LAYER_OFFSET ||
670 ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset < MIN_SCLD_REF_LAYER_OFFSET)
671 {
672 return ERROR_SVC_INV_SUBSET_SPS;
673 }
674
675 ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset =
676 ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
677 COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_top_offset",
678 ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset);
679
680 if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset != 0)
681 {
682 return ERROR_SVC_INV_SUBSET_SPS;
683 }
684
685 if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset >= MAX_SCLD_REF_LAYER_OFFSET ||
686 ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset < MIN_SCLD_REF_LAYER_OFFSET)
687 {
688 return ERROR_SVC_INV_SUBSET_SPS;
689 }
690
691 ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset =
692 ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
693 COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_right_offset",
694 ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset);
695
696 if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset >= MAX_SCLD_REF_LAYER_OFFSET ||
697 ps_seq_svc_ext->i4_seq_scaled_ref_layer_right_offset < MIN_SCLD_REF_LAYER_OFFSET)
698 {
699 return ERROR_SVC_INV_SUBSET_SPS;
700 }
701
702 ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset =
703 ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
704 COPYTHECONTEXT("SPS_EXt: i4_seq_scaled_ref_layer_bottom_offset",
705 ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset);
706
707 if(ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset >= MAX_SCLD_REF_LAYER_OFFSET ||
708 ps_seq_svc_ext->i4_seq_scaled_ref_layer_bottom_offset < MIN_SCLD_REF_LAYER_OFFSET)
709 {
710 return ERROR_INV_SLICE_HDR_T;
711 }
712 }
713
714 ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag = ih264d_get_bit_h264(ps_bitstrm);
715 COPYTHECONTEXT("SPS_EXt: u1_seq_tcoeff_level_prediction_flag",
716 ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag);
717
718 if(1 == ps_seq_svc_ext->u1_seq_tcoeff_level_prediction_flag)
719 {
720 ps_seq_svc_ext->u1_adaptive_tcoeff_level_prediction_flag =
721 ih264d_get_bit_h264(ps_bitstrm);
722 COPYTHECONTEXT("SPS_EXt: u1_adaptive_tcoeff_level_prediction_flag",
723 ps_seq_svc_ext->u1_adaptive_tcoeff_level_prediction_flag);
724 }
725
726 ps_seq_svc_ext->u1_slice_header_restriction_flag = ih264d_get_bit_h264(ps_bitstrm);
727 COPYTHECONTEXT("SPS_EXt: u1_slice_header_restriction_flag",
728 ps_seq_svc_ext->u1_slice_header_restriction_flag);
729
730 ps_seq_svc_ext->u1_svc_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
731 COPYTHECONTEXT("SPS_EXt: u1_svc_vui_parameters_present_flag",
732 ps_seq_svc_ext->u1_svc_vui_parameters_present_flag);
733
734 if(1 == ps_seq_svc_ext->u1_svc_vui_parameters_present_flag)
735 {
736 if(NULL ==
737 ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].s_sps_svc_ext.ps_svc_vui_ext)
738 {
739 void *pv_buf;
740 UWORD32 size;
741 /* Memory allocation only if VUI is enabled in a particular subset SPS*/
742 size = sizeof(svc_vui_ext_t);
743 pv_buf = ps_dec->pf_aligned_alloc(ps_dec->pv_mem_ctxt, 128, size);
744 RETURN_IF((NULL == pv_buf), IV_FAIL);
745 memset(pv_buf, 0, size);
746 ps_seq_svc_ext->ps_svc_vui_ext = pv_buf;
747 ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id]
748 .s_sps_svc_ext.ps_svc_vui_ext = pv_buf;
749 }
750 else
751 {
752 ps_seq_svc_ext->ps_svc_vui_ext =
753 ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id]
754 .s_sps_svc_ext.ps_svc_vui_ext;
755 }
756 ret = isvcd_parse_vui_ext_parametres(ps_seq_svc_ext->ps_svc_vui_ext, ps_bitstrm);
757 if(ret != OK) return ret;
758 }
759 }
760 /* Add conditions for SCALABLE BASELINE PROFILE */
761 if(SCALABLE_BASELINE_PROFILE_IDC == ps_seq->u1_profile_idc ||
762 ((SCALABLE_HIGH_PROFILE_IDC == ps_seq->u1_profile_idc) && (1 == uc_constraint_set0_flag)))
763 {
764 if(ps_seq->i4_chroma_format_idc != 1)
765 {
766 return ERROR_FEATURE_UNAVAIL;
767 }
768
769 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
770 {
771 return ERROR_FEATURE_UNAVAIL;
772 }
773
774 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
775 {
776 return ERROR_FEATURE_UNAVAIL;
777 }
778
779 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
780 {
781 return ERROR_FEATURE_UNAVAIL;
782 }
783
784 if(ps_seq->u1_frame_mbs_only_flag != 1)
785 {
786 return ERROR_FEATURE_UNAVAIL;
787 }
788
789 if((0 != ps_seq_svc_ext->i4_seq_scaled_ref_layer_left_offset % 16) &&
790 (0 != ps_seq_svc_ext->i4_seq_scaled_ref_layer_top_offset % 16))
791 {
792 return ERROR_FEATURE_UNAVAIL;
793 }
794 }
795 /* Compare older num_reorder_frames with the new one if header is already
796 * decoded */
797 if((ps_dec->i4_header_decoded & 1) &&
798 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
799 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_vui_parameters_present_flag) &&
800 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].s_vui.u1_bitstream_restriction_flag))
801 {
802 ps_dec->u1_res_changed = 1;
803 return IVD_RES_CHANGED;
804 }
805 /* In case bitstream read has exceeded the filled size, then return an error */
806 if(EXCEED_OFFSET(ps_bitstrm))
807 {
808 return ERROR_INV_SPS_PPS_T;
809 }
810
811 /*--------------------------------------------------------------------*/
812 /* All initializations to ps_dec are beyond this point */
813 /*--------------------------------------------------------------------*/
814 {
815 WORD32 reorder_depth = ih264d_get_dpb_size(ps_seq);
816 if((1 == ps_seq->u1_vui_parameters_present_flag) &&
817 (1 == ps_seq->s_vui.u1_bitstream_restriction_flag))
818 {
819 reorder_depth = ps_seq->s_vui.u4_num_reorder_frames + 1;
820 }
821
822 if(reorder_depth > H264_MAX_REF_PICS)
823 {
824 return ERROR_INV_SPS_PPS_T;
825 }
826
827 if(ps_seq->u1_frame_mbs_only_flag != 1) reorder_depth *= 2;
828 ps_subset_seq->i4_reorder_depth = reorder_depth + DISPLAY_LATENCY;
829 }
830 ps_subset_seq->u2_disp_height = i4_cropped_ht;
831 ps_subset_seq->u2_disp_width = i4_cropped_wd;
832 ps_subset_seq->u2_pic_wd = u2_pic_wd;
833 ps_subset_seq->u2_pic_ht = u2_pic_ht;
834
835 /* Assuming 8k is the maximum resolution svc dec supports*/
836 if(u2_frm_wd_y > H264_MAX_FRAME_WIDTH) return (NOT_OK);
837 if(u2_frm_ht_y > H264_MAX_FRAME_HEIGHT) return (NOT_OK);
838 if(u2_frm_wd_uv > H264_MAX_FRAME_WIDTH) return (NOT_OK);
839 if(u2_frm_ht_uv > H264_MAX_FRAME_HEIGHT) return (NOT_OK);
840
841 /* Determining the Width and Height of Frame from that of Picture */
842 ps_subset_seq->u2_frm_wd_y = u2_frm_wd_y;
843 ps_subset_seq->u2_frm_ht_y = u2_frm_ht_y;
844 ps_subset_seq->u2_frm_wd_uv = u2_frm_wd_uv;
845 ps_subset_seq->u2_frm_ht_uv = u2_frm_ht_uv;
846
847 ps_subset_seq->u1_pad_len_y_v = (UWORD8) (PAD_LEN_Y_V << (1 - u1_frm));
848 ps_subset_seq->u1_pad_len_cr_v = (UWORD8) (PAD_LEN_UV_V << (1 - u1_frm));
849
850 ps_subset_seq->u2_crop_offset_y = u2_crop_offset_y;
851 ps_subset_seq->u2_crop_offset_uv = u2_crop_offset_uv;
852
853 if(((ps_dec->u2_pic_wd * ps_dec->u2_pic_ht) <
854 (ps_subset_seq->u2_pic_wd * ps_subset_seq->u2_pic_ht)) ||
855 (ps_dec->i4_reorder_depth < ps_subset_seq->i4_reorder_depth))
856 {
857 ps_dec->i4_reorder_depth = ps_subset_seq->i4_reorder_depth;
858
859 ps_dec->u2_disp_height = ps_subset_seq->u2_disp_height;
860 ps_dec->u2_disp_width = ps_subset_seq->u2_disp_width;
861
862 ps_dec->u2_pic_wd = ps_subset_seq->u2_pic_wd;
863 ps_dec->u2_pic_ht = ps_subset_seq->u2_pic_ht;
864 ps_dec->u4_total_mbs = ps_seq->u2_total_num_of_mbs << (1 - ps_seq->u1_frame_mbs_only_flag);
865
866 /* Determining the Width and Height of Frame from that of Picture */
867 ps_dec->u2_frm_wd_y = ps_subset_seq->u2_frm_wd_y;
868 ps_dec->u2_frm_ht_y = ps_subset_seq->u2_frm_ht_y;
869 ps_dec->u2_frm_wd_uv = ps_subset_seq->u2_frm_wd_uv;
870 ps_dec->u2_frm_ht_uv = ps_subset_seq->u2_frm_ht_uv;
871
872 ps_dec->s_pad_mgr.u1_pad_len_y_v = ps_subset_seq->u1_pad_len_y_v;
873 ps_dec->s_pad_mgr.u1_pad_len_cr_v = ps_subset_seq->u1_pad_len_cr_v;
874
875 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs;
876 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs;
877
878 ps_dec->u2_crop_offset_y = ps_subset_seq->u2_crop_offset_y;
879 ps_dec->u2_crop_offset_uv = ps_subset_seq->u2_crop_offset_uv;
880 }
881
882 ps_seq->u1_is_valid = TRUE;
883 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq;
884 if(NULL != ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].s_sps_svc_ext.ps_svc_vui_ext)
885 {
886 ps_seq_svc_ext->ps_svc_vui_ext =
887 ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].s_sps_svc_ext.ps_svc_vui_ext;
888 }
889 ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id] = *ps_subset_seq;
890 ps_dec->ps_cur_sps = &ps_dec->ps_sps[u1_seq_parameter_set_id];
891 ps_svc_lyr_dec->ps_cur_subset_sps = &ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id];
892
893 return OK;
894 }
895 /*!
896 **************************************************************************
897 * \if Function name : isvcd_dec_ref_base_pic_marking \endif
898 *
899 * \brief
900 * Decodes reference base pic marking params
901 *
902 * \return
903 * 0 on Success and error code otherwise
904 **************************************************************************
905 */
906
isvcd_dec_ref_base_pic_marking(dec_ref_base_pic_marking_params_t * ps_ref_base_pic_marking_svc_ext,dec_bit_stream_t * ps_bitstrm)907 WORD32 isvcd_dec_ref_base_pic_marking(
908 dec_ref_base_pic_marking_params_t *ps_ref_base_pic_marking_svc_ext,
909 dec_bit_stream_t *ps_bitstrm)
910 {
911 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
912 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
913
914 SWITCHONTRACE;
915
916 ps_ref_base_pic_marking_svc_ext->u1_adaptive_ref_base_pic_marking_mode_flag =
917 ih264d_get_bit_h264(ps_bitstrm);
918 COPYTHECONTEXT(
919 "Dec ref base pic marking params : "
920 "u1_adaptive_ref_base_pic_marking_mode_flag",
921 ps_ref_base_pic_marking_svc_ext->u1_adaptive_ref_base_pic_marking_mode_flag);
922
923 if(1 == ps_ref_base_pic_marking_svc_ext->u1_adaptive_ref_base_pic_marking_mode_flag)
924 {
925 do
926 {
927 ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation =
928 ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
929 COPYTHECONTEXT(
930 "Dec ref base pic marking params : "
931 "u4_memory_management_base_control_operation",
932 ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation);
933
934 if(1 == ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation)
935 {
936 ps_ref_base_pic_marking_svc_ext->u4_difference_of_base_pic_nums_minus1 =
937 ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
938 COPYTHECONTEXT(
939 "Dec ref base pic marking params : "
940 "u4_difference_of_base_pic_nums_minus1",
941 ps_ref_base_pic_marking_svc_ext->u4_difference_of_base_pic_nums_minus1);
942 }
943
944 if(2 == ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation)
945 {
946 ps_ref_base_pic_marking_svc_ext->u4_long_term_base_pic_num =
947 ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
948 COPYTHECONTEXT("Dec ref base pic marking params : u4_long_term_base_pic_num",
949 ps_ref_base_pic_marking_svc_ext->u4_long_term_base_pic_num);
950 }
951
952 } while(0 != ps_ref_base_pic_marking_svc_ext->u4_memory_management_base_control_operation);
953 }
954 SWITCHOFFTRACE;
955
956 return OK;
957 }
958
959 /*!
960 **************************************************************************
961 * \if Function name : isvcd_parse_nal_unit \endif
962 *
963 * \brief
964 * Decodes NAL unit
965 *
966 * \return
967 * 0 on Success and error code otherwise
968 **************************************************************************
969 */
970
isvcd_parse_nal_unit(svc_dec_lyr_struct_t * dec_svc_hdl,UWORD8 u1_nal_ref_idc)971 WORD32 isvcd_parse_nal_unit(svc_dec_lyr_struct_t *dec_svc_hdl, UWORD8 u1_nal_ref_idc)
972 {
973 dec_bit_stream_t *ps_bitstrm;
974
975 dec_struct_t *ps_dec;
976 svc_dec_lyr_struct_t *ps_svc_lyr_dec;
977 UWORD8 u1_nal_unit_type;
978 WORD32 i_status = OK;
979
980 ps_svc_lyr_dec = (svc_dec_lyr_struct_t *) dec_svc_hdl;
981 ps_dec = &ps_svc_lyr_dec->s_dec;
982
983 {
984 SWITCHOFFTRACE;
985 u1_nal_unit_type = ps_dec->u1_nal_unit_type;
986
987 ps_bitstrm = ps_dec->ps_bitstrm;
988
989 // Skip all NALUs if SPS and PPS are not decoded
990 switch(u1_nal_unit_type)
991 {
992 case SLICE_DATA_PARTITION_A_NAL:
993 case SLICE_DATA_PARTITION_B_NAL:
994 case SLICE_DATA_PARTITION_C_NAL:
995 if(!ps_dec->i4_decode_header) ih264d_parse_slice_partition(ps_dec, ps_bitstrm);
996 break;
997
998 case IDR_SLICE_NAL:
999 case SLICE_NAL:
1000
1001 if(ps_svc_lyr_dec->u1_base_res_flag != 1)
1002 {
1003 return NOT_OK;
1004 }
1005 if(!ps_dec->i4_decode_header)
1006 {
1007 if(ps_dec->i4_header_decoded == 3)
1008 {
1009 /* ! */
1010 DEBUG_THREADS_PRINTF("Decoding a slice NAL\n");
1011 {
1012 ih264d_get_pre_sei_params(ps_dec, u1_nal_unit_type);
1013 /* ! */
1014 ps_dec->u4_slice_start_code_found = 1;
1015
1016 i_status = isvcd_parse_decode_slice(
1017 (UWORD8) (u1_nal_unit_type == IDR_SLICE_NAL), u1_nal_ref_idc,
1018 ps_svc_lyr_dec);
1019
1020 if(i_status != OK)
1021 {
1022 return i_status;
1023 }
1024 }
1025 }
1026 }
1027 break;
1028
1029 case SEI_NAL:
1030 case PREFIX_UNIT_NAL:
1031 case SEQ_PARAM_NAL:
1032 case PIC_PARAM_NAL:
1033 case SUBSET_SPS_NAL:
1034 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type);
1035 break;
1036
1037 case ACCESS_UNIT_DELIMITER_RBSP:
1038 if(!ps_dec->i4_decode_header)
1039 {
1040 ih264d_access_unit_delimiter_rbsp(ps_dec);
1041 }
1042 break;
1043 // ignore the END_OF_SEQ_RBSP NAL and decode even after this NAL
1044 case END_OF_STREAM_RBSP:
1045 if(!ps_dec->i4_decode_header)
1046 {
1047 ih264d_parse_end_of_stream(ps_dec);
1048 }
1049 break;
1050 case FILLER_DATA_NAL:
1051 if(!ps_dec->i4_decode_header)
1052 {
1053 ih264d_parse_filler_data(ps_dec, ps_bitstrm);
1054 }
1055 break;
1056 case CODED_SLICE_EXTENSION_NAL:
1057
1058 if(ps_svc_lyr_dec->u1_base_res_flag == 1)
1059 {
1060 return NOT_OK;
1061 }
1062 if(!ps_dec->i4_decode_header)
1063 {
1064 if(ps_dec->i4_header_decoded == 3)
1065 {
1066 /* ! */
1067 DEBUG_THREADS_PRINTF("Decoding an SVC slice NAL\n");
1068 {
1069 {
1070 ih264d_get_pre_sei_params(ps_dec, u1_nal_unit_type);
1071 /* ! */
1072 ps_dec->u4_slice_start_code_found = 1;
1073
1074 i_status = isvcd_parse_decode_slice_ext_nal(
1075 (UWORD8) (ps_svc_lyr_dec->ps_nal_svc_ext->u1_idr_flag),
1076 u1_nal_ref_idc, ps_svc_lyr_dec);
1077
1078 if(i_status != OK)
1079 {
1080 return i_status;
1081 }
1082 }
1083 }
1084 }
1085 }
1086 break;
1087
1088 default:
1089 H264_DEC_DEBUG_PRINT("\nUnknown NAL type %d\n", u1_nal_unit_type);
1090 break;
1091 }
1092 }
1093 return i_status;
1094 }
1095
1096 /*!
1097 **************************************************************************
1098 * \if Function name : isvcd_parse_sps \endif
1099 *
1100 * \brief
1101 * Decodes Picture Parameter set
1102 *
1103 * \return
1104 * 0 on Success and Error code otherwise
1105 **************************************************************************
1106 */
isvcd_parse_sps(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_bit_stream_t * ps_bitstrm)1107 WORD32 isvcd_parse_sps(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_bit_stream_t *ps_bitstrm)
1108 {
1109 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1110 UWORD8 i;
1111 dec_seq_params_t *ps_seq = NULL;
1112 dec_svc_seq_params_t *ps_subset_seq = NULL;
1113 UWORD8 u1_profile_idc, u1_level_idc, u1_seq_parameter_set_id, u1_mb_aff_flag = 0;
1114 UWORD16 i2_max_frm_num;
1115 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
1116 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
1117 UWORD8 u1_frm, uc_constraint_set0_flag, uc_constraint_set1_flag, uc_constraint_set2_flag;
1118 WORD32 i4_cropped_ht, i4_cropped_wd;
1119 UWORD32 u4_temp;
1120 UWORD64 u8_temp;
1121 UWORD32 u4_pic_height_in_map_units, u4_pic_width_in_mbs;
1122 UWORD32 u2_pic_wd = 0;
1123 UWORD32 u2_pic_ht = 0;
1124 UWORD32 u2_frm_wd_y = 0;
1125 UWORD32 u2_frm_ht_y = 0;
1126 UWORD32 u2_frm_wd_uv = 0;
1127 UWORD32 u2_frm_ht_uv = 0;
1128 UWORD32 u2_crop_offset_y = 0;
1129 UWORD32 u2_crop_offset_uv = 0;
1130 WORD32 ret;
1131 WORD32 num_reorder_frames;
1132 /* High profile related syntax element */
1133 WORD32 i4_i;
1134 /* G050 */
1135 UWORD8 u1_frame_cropping_flag,
1136 u1_frame_cropping_rect_left_ofst = 0, u1_frame_cropping_rect_right_ofst = 0,
1137 u1_frame_cropping_rect_top_ofst = 0, u1_frame_cropping_rect_bottom_ofst = 0;
1138 /* G050 */
1139 /*--------------------------------------------------------------------*/
1140 /* Decode seq_parameter_set_id and profile and level values */
1141 /*--------------------------------------------------------------------*/
1142 SWITCHONTRACE;
1143 u1_profile_idc = ih264d_get_bits_h264(ps_bitstrm, 8);
1144 COPYTHECONTEXT("SPS: profile_idc", u1_profile_idc);
1145
1146 /* G050 */
1147 uc_constraint_set0_flag = ih264d_get_bit_h264(ps_bitstrm);
1148 uc_constraint_set1_flag = ih264d_get_bit_h264(ps_bitstrm);
1149 uc_constraint_set2_flag = ih264d_get_bit_h264(ps_bitstrm);
1150 UNUSED(uc_constraint_set2_flag);
1151 /*****************************************************/
1152 /* Read 5 bits for uc_constraint_set3_flag (1 bit) */
1153 /* and reserved_zero_4bits (4 bits) - Sushant */
1154 /*****************************************************/
1155 ih264d_get_bits_h264(ps_bitstrm, 5);
1156 /* G050 */
1157 /* Check whether particular profile is suported or not */
1158 /* Check whether particular profile is suported or not */
1159 if((u1_profile_idc != MAIN_PROFILE_IDC) && (u1_profile_idc != BASE_PROFILE_IDC) &&
1160 (u1_profile_idc != HIGH_PROFILE_IDC))
1161 {
1162 /* Apart from Baseline, main and high profile,
1163 * only extended profile is supported provided
1164 * uc_constraint_set0_flag or uc_constraint_set1_flag are set to 1
1165 */
1166 if((u1_profile_idc != EXTENDED_PROFILE_IDC) ||
1167 ((uc_constraint_set1_flag != 1) && (uc_constraint_set0_flag != 1)))
1168 {
1169 return (ERROR_FEATURE_UNAVAIL);
1170 }
1171 }
1172
1173 u1_level_idc = ih264d_get_bits_h264(ps_bitstrm, 8);
1174 COPYTHECONTEXT("SPS: u4_level_idc", u1_level_idc);
1175
1176 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1177 if(u4_temp & MASK_ERR_SEQ_SET_ID) return ERROR_INV_SPS_PPS_T;
1178 u1_seq_parameter_set_id = u4_temp;
1179 COPYTHECONTEXT("SPS: seq_parameter_set_id", u1_seq_parameter_set_id);
1180
1181 /*--------------------------------------------------------------------*/
1182 /* Find an seq param entry in seqparam array of decStruct */
1183 /*--------------------------------------------------------------------*/
1184 ps_subset_seq = ps_svc_lyr_dec->pv_scratch_subset_sps;
1185 memset(ps_subset_seq, 0, sizeof(dec_svc_seq_params_t));
1186 ps_seq = ps_dec->pv_scratch_sps_pps;
1187 memset(ps_seq, 0, sizeof(dec_seq_params_t));
1188
1189 if(ps_dec->i4_header_decoded & 1)
1190 {
1191 if(ps_dec->ps_cur_sps != NULL)
1192 *ps_seq = *ps_dec->ps_cur_sps;
1193 else
1194 return ERROR_INV_SPS_PPS_T;
1195 }
1196
1197 if((ps_dec->i4_header_decoded & 1) &&
1198 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1199 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_profile_idc != u1_profile_idc))
1200 {
1201 ps_dec->u1_res_changed = 1;
1202 return IVD_RES_CHANGED;
1203 }
1204
1205 if((ps_dec->i4_header_decoded & 1) &&
1206 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1207 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_level_idc != u1_level_idc))
1208 {
1209 ps_dec->u1_res_changed = 1;
1210 return IVD_RES_CHANGED;
1211 }
1212
1213 ps_seq->u1_profile_idc = u1_profile_idc;
1214 ps_seq->u1_level_idc = u1_level_idc;
1215 ps_seq->u1_seq_parameter_set_id = u1_seq_parameter_set_id;
1216 ps_subset_seq->ps_seq = &ps_dec->ps_sps[u1_seq_parameter_set_id];
1217
1218 /*******************************************************************/
1219 /* Initializations for high profile - Sushant */
1220 /*******************************************************************/
1221 ps_seq->i4_chroma_format_idc = 1;
1222 ps_seq->i4_bit_depth_luma_minus8 = 0;
1223 ps_seq->i4_bit_depth_chroma_minus8 = 0;
1224 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = 0;
1225 ps_seq->i4_seq_scaling_matrix_present_flag = 0;
1226 if(u1_profile_idc == HIGH_PROFILE_IDC || u1_profile_idc == SCALABLE_BASELINE_PROFILE_IDC ||
1227 u1_profile_idc == SCALABLE_HIGH_PROFILE_IDC)
1228 {
1229 /* reading chroma_format_idc */
1230 ps_seq->i4_chroma_format_idc = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1231
1232 /* Monochrome is not supported */
1233 if(ps_seq->i4_chroma_format_idc != 1)
1234 {
1235 return ERROR_FEATURE_UNAVAIL;
1236 }
1237
1238 /* reading bit_depth_luma_minus8 */
1239 ps_seq->i4_bit_depth_luma_minus8 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1240
1241 if(ps_seq->i4_bit_depth_luma_minus8 != 0)
1242 {
1243 return ERROR_FEATURE_UNAVAIL;
1244 }
1245
1246 /* reading bit_depth_chroma_minus8 */
1247 ps_seq->i4_bit_depth_chroma_minus8 = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1248
1249 if(ps_seq->i4_bit_depth_chroma_minus8 != 0)
1250 {
1251 return ERROR_FEATURE_UNAVAIL;
1252 }
1253
1254 /* reading qpprime_y_zero_transform_bypass_flag */
1255 ps_seq->i4_qpprime_y_zero_transform_bypass_flag = (WORD32) ih264d_get_bit_h264(ps_bitstrm);
1256
1257 if(ps_seq->i4_qpprime_y_zero_transform_bypass_flag != 0)
1258 {
1259 return ERROR_INV_SPS_PPS_T;
1260 }
1261
1262 /* reading seq_scaling_matrix_present_flag */
1263 ps_seq->i4_seq_scaling_matrix_present_flag = (WORD32) ih264d_get_bit_h264(ps_bitstrm);
1264
1265 if(ps_seq->i4_seq_scaling_matrix_present_flag)
1266 {
1267 for(i4_i = 0; i4_i < 8; i4_i++)
1268 {
1269 ps_seq->u1_seq_scaling_list_present_flag[i4_i] = ih264d_get_bit_h264(ps_bitstrm);
1270
1271 /* initialize u1_use_default_scaling_matrix_flag[i4_i] to zero */
1272 /* before calling scaling list */
1273 ps_seq->u1_use_default_scaling_matrix_flag[i4_i] = 0;
1274
1275 if(ps_seq->u1_seq_scaling_list_present_flag[i4_i])
1276 {
1277 if(i4_i < 6)
1278 {
1279 ret = ih264d_scaling_list(ps_seq->i2_scalinglist4x4[i4_i], 16,
1280 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
1281 ps_bitstrm);
1282 }
1283 else
1284 {
1285 ret = ih264d_scaling_list(ps_seq->i2_scalinglist8x8[i4_i - 6], 64,
1286 &ps_seq->u1_use_default_scaling_matrix_flag[i4_i],
1287 ps_bitstrm);
1288 }
1289 if(ret != OK)
1290 {
1291 return ret;
1292 }
1293 }
1294 }
1295 }
1296 }
1297 /*--------------------------------------------------------------------*/
1298 /* Decode MaxFrameNum */
1299 /*--------------------------------------------------------------------*/
1300 u8_temp = (UWORD64) 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1301 if(u8_temp > MAX_BITS_IN_FRAME_NUM)
1302 {
1303 return ERROR_INV_SPS_PPS_T;
1304 }
1305 ps_seq->u1_bits_in_frm_num = (UWORD8) u8_temp;
1306 COPYTHECONTEXT("SPS: log2_max_frame_num_minus4", (ps_seq->u1_bits_in_frm_num - 4));
1307
1308 i2_max_frm_num = (1 << (ps_seq->u1_bits_in_frm_num));
1309 ps_seq->u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1;
1310 /*--------------------------------------------------------------------*/
1311 /* Decode picture order count and related values */
1312 /*--------------------------------------------------------------------*/
1313 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1314 if(u4_temp > MAX_PIC_ORDER_CNT_TYPE)
1315 {
1316 return ERROR_INV_POC_TYPE_T;
1317 }
1318 ps_seq->u1_pic_order_cnt_type = u4_temp;
1319 COPYTHECONTEXT("SPS: pic_order_cnt_type", ps_seq->u1_pic_order_cnt_type);
1320
1321 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = 1;
1322 if(ps_seq->u1_pic_order_cnt_type == 0)
1323 {
1324 u8_temp = (UWORD64) 4 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1325 if(u8_temp > MAX_BITS_IN_POC_LSB)
1326 {
1327 return ERROR_INV_SPS_PPS_T;
1328 }
1329 ps_seq->u1_log2_max_pic_order_cnt_lsb_minus = (UWORD8) u8_temp;
1330 ps_seq->i4_max_pic_order_cntLsb = (1 << u8_temp);
1331 COPYTHECONTEXT("SPS: log2_max_pic_order_cnt_lsb_minus4", (u8_temp - 4));
1332 }
1333 else if(ps_seq->u1_pic_order_cnt_type == 1)
1334 {
1335 ps_seq->u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264(ps_bitstrm);
1336 COPYTHECONTEXT("SPS: delta_pic_order_always_zero_flag",
1337 ps_seq->u1_delta_pic_order_always_zero_flag);
1338
1339 ps_seq->i4_ofst_for_non_ref_pic = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1340 COPYTHECONTEXT("SPS: offset_for_non_ref_pic", ps_seq->i4_ofst_for_non_ref_pic);
1341
1342 ps_seq->i4_ofst_for_top_to_bottom_field = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1343 COPYTHECONTEXT("SPS: offset_for_top_to_bottom_field",
1344 ps_seq->i4_ofst_for_top_to_bottom_field);
1345
1346 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1347 if(u4_temp > 255) return ERROR_INV_SPS_PPS_T;
1348 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp;
1349 COPYTHECONTEXT("SPS: num_ref_frames_in_pic_order_cnt_cycle",
1350 ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle);
1351
1352 for(i = 0; i < ps_seq->u1_num_ref_frames_in_pic_order_cnt_cycle; i++)
1353 {
1354 ps_seq->i4_ofst_for_ref_frame[i] = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1355 COPYTHECONTEXT("SPS: offset_for_ref_frame", ps_seq->i4_ofst_for_ref_frame[i]);
1356 }
1357 }
1358
1359 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1360
1361 if((u4_temp > H264_MAX_REF_PICS))
1362 {
1363 return ERROR_NUM_REF;
1364 }
1365
1366 /* Compare with older num_ref_frames is header is already once */
1367 if((ps_dec->i4_header_decoded & 1) &&
1368 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1369 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_num_ref_frames != u4_temp))
1370 {
1371 ps_dec->u1_res_changed = 1;
1372 return IVD_RES_CHANGED;
1373 }
1374
1375 ps_seq->u1_num_ref_frames = u4_temp;
1376 COPYTHECONTEXT("SPS: num_ref_frames", ps_seq->u1_num_ref_frames);
1377
1378 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264(ps_bitstrm);
1379 COPYTHECONTEXT("SPS: gaps_in_frame_num_value_allowed_flag",
1380 ps_seq->u1_gaps_in_frame_num_value_allowed_flag);
1381
1382 ps_seq->u1_gaps_in_frame_num_value_allowed_flag = 0;
1383
1384 /*--------------------------------------------------------------------*/
1385 /* Decode FrameWidth and FrameHeight and related values */
1386 /*--------------------------------------------------------------------*/
1387 u8_temp = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1388 /* Check for unsupported resolutions*/
1389 if(u8_temp > (H264_MAX_FRAME_WIDTH >> 4))
1390 {
1391 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
1392 }
1393 u4_pic_width_in_mbs = (UWORD32) u8_temp;
1394 COPYTHECONTEXT("SPS: pic_width_in_mbs_minus1", u4_pic_width_in_mbs - 1);
1395
1396 u8_temp = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1397 if(u8_temp > (H264_MAX_FRAME_HEIGHT >> 4))
1398 {
1399 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
1400 }
1401 u4_pic_height_in_map_units = (UWORD32) u8_temp;
1402
1403 ps_seq->u2_frm_wd_in_mbs = u4_pic_width_in_mbs;
1404 ps_seq->u2_frm_ht_in_mbs = u4_pic_height_in_map_units;
1405 u2_pic_wd = (u4_pic_width_in_mbs << 4);
1406 u2_pic_ht = (u4_pic_height_in_map_units << 4);
1407 /*--------------------------------------------------------------------*/
1408 /* Get the value of MaxMbAddress and Number of bits needed for it */
1409 /*--------------------------------------------------------------------*/
1410 ps_seq->u2_max_mb_addr = (ps_seq->u2_frm_wd_in_mbs * ps_seq->u2_frm_ht_in_mbs) - 1;
1411 ps_seq->u2_total_num_of_mbs = ps_seq->u2_max_mb_addr + 1;
1412 ps_seq->u1_level_idc = ih264d_correct_level_idc(u1_level_idc, ps_seq->u2_total_num_of_mbs);
1413
1414 u1_frm = ih264d_get_bit_h264(ps_bitstrm);
1415 if((ps_dec->i4_header_decoded & 1) &&
1416 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1417 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_frame_mbs_only_flag != u1_frm))
1418 {
1419 ps_dec->u1_res_changed = 1;
1420 return IVD_RES_CHANGED;
1421 }
1422 ps_seq->u1_frame_mbs_only_flag = u1_frm;
1423 COPYTHECONTEXT("SPS: frame_mbs_only_flag", u1_frm);
1424
1425 if(!u1_frm) u1_mb_aff_flag = ih264d_get_bit_h264(ps_bitstrm);
1426
1427 if((ps_dec->i4_header_decoded & 1) &&
1428 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1429 (ps_dec->ps_sps[u1_seq_parameter_set_id].u1_mb_aff_flag != u1_mb_aff_flag))
1430 {
1431 ps_dec->u1_res_changed = 1;
1432 return IVD_RES_CHANGED;
1433 }
1434
1435 if(!u1_frm)
1436 {
1437 u2_pic_ht <<= 1;
1438 ps_seq->u1_mb_aff_flag = u1_mb_aff_flag;
1439 COPYTHECONTEXT("SPS: mb_adaptive_frame_field_flag", ps_seq->u1_mb_aff_flag);
1440 }
1441 else
1442 ps_seq->u1_mb_aff_flag = 0;
1443
1444 ps_seq->u1_direct_8x8_inference_flag = ih264d_get_bit_h264(ps_bitstrm);
1445 COPYTHECONTEXT("SPS: direct_8x8_inference_flag", ps_seq->u1_direct_8x8_inference_flag);
1446
1447 /* G050 */
1448 u1_frame_cropping_flag = ih264d_get_bit_h264(ps_bitstrm);
1449 COPYTHECONTEXT("SPS: frame_cropping_flag", u1_frame_cropping_flag);
1450
1451 if(u1_frame_cropping_flag)
1452 {
1453 u1_frame_cropping_rect_left_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1454 COPYTHECONTEXT("SPS: frame_cropping_rect_left_offset", u1_frame_cropping_rect_left_ofst);
1455 u1_frame_cropping_rect_right_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1456 COPYTHECONTEXT("SPS: frame_cropping_rect_right_offset", u1_frame_cropping_rect_right_ofst);
1457 u1_frame_cropping_rect_top_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1458 COPYTHECONTEXT("SPS: frame_cropping_rect_top_offset", u1_frame_cropping_rect_top_ofst);
1459 u1_frame_cropping_rect_bottom_ofst = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1460 COPYTHECONTEXT("SPS: frame_cropping_rect_bottom_offset",
1461 u1_frame_cropping_rect_bottom_ofst);
1462 }
1463 /* G050 */
1464 ps_seq->u1_vui_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
1465 COPYTHECONTEXT("SPS: vui_parameters_present_flag", ps_seq->u1_vui_parameters_present_flag);
1466
1467 u2_frm_wd_y = u2_pic_wd + (UWORD8) (PAD_LEN_Y_H << 1);
1468
1469 if(1 == ps_dec->u4_share_disp_buf)
1470 {
1471 if(ps_dec->u4_app_disp_width > u2_frm_wd_y) u2_frm_wd_y = ps_dec->u4_app_disp_width;
1472 }
1473
1474 u2_frm_ht_y = u2_pic_ht + (UWORD8) (PAD_LEN_Y_V << 2);
1475 u2_frm_wd_uv = u2_pic_wd + (UWORD8) (PAD_LEN_UV_H << 2);
1476 u2_frm_wd_uv = MAX(u2_frm_wd_uv, u2_frm_wd_y);
1477 u2_frm_ht_uv = (u2_pic_ht >> 1) + (UWORD8) (PAD_LEN_UV_V << 2);
1478 u2_frm_ht_uv = MAX(u2_frm_ht_uv, (u2_frm_ht_y >> 1));
1479
1480 /* Calculate display picture width, height and start u4_ofst from YUV420 */
1481 /* pictute buffers as per cropping information parsed above */
1482 {
1483 UWORD16 u2_rgt_ofst = 0;
1484 UWORD16 u2_lft_ofst = 0;
1485 UWORD16 u2_top_ofst = 0;
1486 UWORD16 u2_btm_ofst = 0;
1487 UWORD8 u1_frm_mbs_flag;
1488 UWORD8 u1_vert_mult_factor;
1489
1490 if(u1_frame_cropping_flag)
1491 {
1492 /* Calculate right and left u4_ofst for cropped picture */
1493 u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1;
1494 u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1;
1495
1496 /* Know frame MBs only u4_flag */
1497 u1_frm_mbs_flag = (1 == ps_seq->u1_frame_mbs_only_flag);
1498
1499 /* Simplify the vertical u4_ofst calculation from field/frame */
1500 u1_vert_mult_factor = (2 - u1_frm_mbs_flag);
1501
1502 /* Calculate bottom and top u4_ofst for cropped picture */
1503 u2_btm_ofst = (u1_frame_cropping_rect_bottom_ofst << u1_vert_mult_factor);
1504 u2_top_ofst = (u1_frame_cropping_rect_top_ofst << u1_vert_mult_factor);
1505 }
1506
1507 /* Calculate u4_ofst from start of YUV 420 picture buffer to start of*/
1508 /* cropped picture buffer */
1509 u2_crop_offset_y = (u2_frm_wd_y * u2_top_ofst) + (u2_lft_ofst);
1510 u2_crop_offset_uv =
1511 (u2_frm_wd_uv * (u2_top_ofst >> 1)) + (u2_lft_ofst >> 1) * YUV420SP_FACTOR;
1512 /* Calculate the display picture width and height based on crop */
1513 /* information */
1514 i4_cropped_ht = (WORD32) u2_pic_ht - (WORD32) (u2_btm_ofst + u2_top_ofst);
1515 i4_cropped_wd = (WORD32) u2_pic_wd - (WORD32) (u2_rgt_ofst + u2_lft_ofst);
1516
1517 if((i4_cropped_ht < MB_SIZE) || (i4_cropped_wd < MB_SIZE))
1518 {
1519 return ERROR_INV_SPS_PPS_T;
1520 }
1521
1522 if((ps_dec->i4_header_decoded & 1) &&
1523 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1524 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_wd != u2_pic_wd))
1525 {
1526 ps_dec->u1_res_changed = 1;
1527 return IVD_RES_CHANGED;
1528 }
1529
1530 if((ps_dec->i4_header_decoded & 1) &&
1531 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1532 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_disp_width != i4_cropped_wd))
1533 {
1534 ps_dec->u1_res_changed = 1;
1535 return IVD_RES_CHANGED;
1536 }
1537
1538 if((ps_dec->i4_header_decoded & 1) &&
1539 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1540 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_pic_ht != u2_pic_ht))
1541 {
1542 ps_dec->u1_res_changed = 1;
1543 return IVD_RES_CHANGED;
1544 }
1545
1546 if((ps_dec->i4_header_decoded & 1) &&
1547 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) &&
1548 (ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id].u2_disp_height != i4_cropped_ht))
1549 {
1550 ps_dec->u1_res_changed = 1;
1551 return IVD_RES_CHANGED;
1552 }
1553 /* Check again for unsupported resolutions with updated values*/
1554 if((u2_pic_wd > SVCD_MAX_FRAME_WIDTH) || (u2_pic_ht > SVCD_MAX_FRAME_HEIGHT) ||
1555 (u2_pic_wd < SVCD_MIN_FRAME_WIDTH) || (u2_pic_ht < SVCD_MIN_FRAME_HEIGHT) ||
1556 (u2_pic_wd * (UWORD32) u2_pic_ht > SVCD_MAX_FRAME_SIZE))
1557 {
1558 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
1559 }
1560
1561 /* If MBAff is enabled, decoder support is limited to streams with
1562 * width less than half of H264_MAX_FRAME_WIDTH.
1563 * In case of MBAff decoder processes two rows at a time
1564 */
1565 if((u2_pic_wd << ps_seq->u1_mb_aff_flag) > H264_MAX_FRAME_WIDTH)
1566 {
1567 return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED;
1568 }
1569 }
1570
1571 /* Backup num_reorder_frames if header is already decoded */
1572 if((ps_dec->i4_header_decoded & 1) && (1 == ps_seq->u1_vui_parameters_present_flag) &&
1573 (1 == ps_seq->s_vui.u1_bitstream_restriction_flag))
1574 {
1575 num_reorder_frames = (WORD32) ps_seq->s_vui.u4_num_reorder_frames;
1576 }
1577 else
1578 {
1579 num_reorder_frames = -1;
1580 }
1581 if(1 == ps_seq->u1_vui_parameters_present_flag)
1582 {
1583 ret = ih264d_parse_vui_parametres(&ps_seq->s_vui, ps_bitstrm);
1584 if(ret != OK) return ret;
1585 }
1586
1587 /* Compare older num_reorder_frames with the new one if header is already
1588 * decoded */
1589 if((ps_dec->i4_header_decoded & 1) &&
1590 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_is_valid) && (-1 != num_reorder_frames) &&
1591 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].u1_vui_parameters_present_flag) &&
1592 (1 == ps_dec->ps_sps[u1_seq_parameter_set_id].s_vui.u1_bitstream_restriction_flag) &&
1593 ((WORD32) ps_dec->ps_sps[u1_seq_parameter_set_id].s_vui.u4_num_reorder_frames !=
1594 num_reorder_frames))
1595 {
1596 ps_dec->u1_res_changed = 1;
1597 return IVD_RES_CHANGED;
1598 }
1599
1600 /* In case bitstream read has exceeded the filled size, then return an error */
1601 if(EXCEED_OFFSET(ps_bitstrm))
1602 {
1603 return ERROR_INV_SPS_PPS_T;
1604 }
1605
1606 /*--------------------------------------------------------------------*/
1607 /* All initializations to ps_dec are beyond this point */
1608 /*--------------------------------------------------------------------*/
1609 {
1610 WORD32 reorder_depth = ih264d_get_dpb_size(ps_seq);
1611 if((1 == ps_seq->u1_vui_parameters_present_flag) &&
1612 (1 == ps_seq->s_vui.u1_bitstream_restriction_flag))
1613 {
1614 reorder_depth = ps_seq->s_vui.u4_num_reorder_frames + 1;
1615 }
1616
1617 if(reorder_depth > H264_MAX_REF_PICS)
1618 {
1619 return ERROR_INV_SPS_PPS_T;
1620 }
1621
1622 if(ps_seq->u1_frame_mbs_only_flag != 1) reorder_depth *= 2;
1623 ps_subset_seq->i4_reorder_depth = reorder_depth + DISPLAY_LATENCY;
1624 }
1625 ps_subset_seq->u2_disp_height = i4_cropped_ht;
1626 ps_subset_seq->u2_disp_width = i4_cropped_wd;
1627 ps_subset_seq->u2_pic_wd = u2_pic_wd;
1628 ps_subset_seq->u2_pic_ht = u2_pic_ht;
1629
1630 /* Determining the Width and Height of Frame from that of Picture */
1631 ps_subset_seq->u2_frm_wd_y = u2_frm_wd_y;
1632 ps_subset_seq->u2_frm_ht_y = u2_frm_ht_y;
1633 ps_subset_seq->u2_frm_wd_uv = u2_frm_wd_uv;
1634 ps_subset_seq->u2_frm_ht_uv = u2_frm_ht_uv;
1635
1636 ps_subset_seq->u1_pad_len_y_v = (UWORD8) (PAD_LEN_Y_V << (1 - u1_frm));
1637 ps_subset_seq->u1_pad_len_cr_v = (UWORD8) (PAD_LEN_UV_V << (1 - u1_frm));
1638
1639 ps_subset_seq->u2_crop_offset_y = u2_crop_offset_y;
1640 ps_subset_seq->u2_crop_offset_uv = u2_crop_offset_uv;
1641
1642 if(((ps_dec->u2_pic_wd * ps_dec->u2_pic_ht) <
1643 (ps_subset_seq->u2_pic_wd * ps_subset_seq->u2_pic_ht)) ||
1644 (ps_dec->i4_reorder_depth < ps_subset_seq->i4_reorder_depth))
1645 {
1646 ps_dec->i4_reorder_depth = ps_subset_seq->i4_reorder_depth;
1647
1648 ps_dec->u2_disp_height = ps_subset_seq->u2_disp_height;
1649 ps_dec->u2_disp_width = ps_subset_seq->u2_disp_width;
1650 ps_dec->u2_pic_wd = ps_subset_seq->u2_pic_wd;
1651 ps_dec->u2_pic_ht = ps_subset_seq->u2_pic_ht;
1652 ps_dec->u4_total_mbs = ps_seq->u2_total_num_of_mbs << (1 - ps_seq->u1_frame_mbs_only_flag);
1653
1654 /* Determining the Width and Height of Frame from that of Picture */
1655 ps_dec->u2_frm_wd_y = ps_subset_seq->u2_frm_wd_y;
1656 ps_dec->u2_frm_ht_y = ps_subset_seq->u2_frm_ht_y;
1657 ps_dec->u2_frm_wd_uv = ps_subset_seq->u2_frm_wd_uv;
1658 ps_dec->u2_frm_ht_uv = ps_subset_seq->u2_frm_ht_uv;
1659
1660 ps_dec->s_pad_mgr.u1_pad_len_y_v = ps_subset_seq->u1_pad_len_y_v;
1661 ps_dec->s_pad_mgr.u1_pad_len_cr_v = ps_subset_seq->u1_pad_len_cr_v;
1662
1663 ps_dec->u2_frm_wd_in_mbs = ps_seq->u2_frm_wd_in_mbs;
1664 ps_dec->u2_frm_ht_in_mbs = ps_seq->u2_frm_ht_in_mbs;
1665 ps_dec->u2_crop_offset_y = ps_subset_seq->u2_crop_offset_y;
1666 ps_dec->u2_crop_offset_uv = ps_subset_seq->u2_crop_offset_uv;
1667 }
1668
1669 ps_seq->u1_is_valid = TRUE;
1670 ps_dec->ps_sps[u1_seq_parameter_set_id] = *ps_seq;
1671 ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id] = *ps_subset_seq;
1672 ps_dec->ps_cur_sps = &ps_dec->ps_sps[u1_seq_parameter_set_id];
1673 ps_svc_lyr_dec->ps_cur_subset_sps = &ps_svc_lyr_dec->ps_subset_sps[u1_seq_parameter_set_id];
1674
1675 return OK;
1676 }
1677
1678 /*!
1679 **************************************************************************
1680 * \if Function name : isvcd_parse_pps \endif
1681 *
1682 * \brief
1683 * Decodes Picture Parameter set
1684 *
1685 * \return
1686 * 0 on Success and Error code otherwise
1687 **************************************************************************
1688 */
isvcd_parse_pps(svc_dec_lyr_struct_t * ps_svc_lyr_dec,dec_bit_stream_t * ps_bitstrm)1689 WORD32 isvcd_parse_pps(svc_dec_lyr_struct_t *ps_svc_lyr_dec, dec_bit_stream_t *ps_bitstrm)
1690 {
1691 dec_struct_t *ps_dec = &ps_svc_lyr_dec->s_dec;
1692 UWORD8 uc_temp;
1693 dec_seq_params_t *ps_sps = NULL;
1694 dec_pic_params_t *ps_pps = NULL;
1695 UWORD32 *pu4_bitstrm_buf = ps_dec->ps_bitstrm->pu4_buffer;
1696 UWORD32 *pu4_bitstrm_ofst = &ps_dec->ps_bitstrm->u4_ofst;
1697
1698 /* Variables used for error resilience checks */
1699 UWORD64 u8_temp;
1700 UWORD32 u4_temp;
1701 WORD32 i_temp;
1702
1703 /* For High profile related syntax elements */
1704 UWORD8 u1_more_data_flag;
1705 WORD32 i4_i;
1706
1707 /*--------------------------------------------------------------------*/
1708 /* Decode pic_parameter_set_id and find corresponding pic params */
1709 /*--------------------------------------------------------------------*/
1710 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1711 if(u4_temp & MASK_ERR_PIC_SET_ID) return ERROR_INV_SPS_PPS_T;
1712 ps_pps = ps_dec->pv_scratch_sps_pps;
1713 *ps_pps = ps_dec->ps_pps[u4_temp];
1714 ps_pps->u1_pic_parameter_set_id = (UWORD8) u4_temp;
1715 COPYTHECONTEXT("PPS: pic_parameter_set_id", ps_pps->u1_pic_parameter_set_id);
1716
1717 /************************************************/
1718 /* initilization of High profile syntax element */
1719 /************************************************/
1720 ps_pps->i4_transform_8x8_mode_flag = 0;
1721 ps_pps->i4_pic_scaling_matrix_present_flag = 0;
1722
1723 /*--------------------------------------------------------------------*/
1724 /* Decode seq_parameter_set_id and map it to a seq_parameter_set */
1725 /*--------------------------------------------------------------------*/
1726 u4_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1727 if(u4_temp & MASK_ERR_SEQ_SET_ID) return ERROR_INV_SPS_PPS_T;
1728 COPYTHECONTEXT("PPS: seq_parameter_set_id", u4_temp);
1729 ps_sps = &ps_dec->ps_sps[u4_temp];
1730 ps_pps->ps_sps = ps_sps;
1731
1732 /*--------------------------------------------------------------------*/
1733 /* Decode entropy_coding_mode */
1734 /*--------------------------------------------------------------------*/
1735 ps_pps->u1_entropy_coding_mode = ih264d_get_bit_h264(ps_bitstrm);
1736 COPYTHECONTEXT("PPS: entropy_coding_mode_flag", ps_pps->u1_entropy_coding_mode);
1737
1738 ps_pps->u1_pic_order_present_flag = ih264d_get_bit_h264(ps_bitstrm);
1739 COPYTHECONTEXT("PPS: pic_order_present_flag", ps_pps->u1_pic_order_present_flag);
1740
1741 /*--------------------------------------------------------------------*/
1742 /* Decode num_slice_groups_minus1 */
1743 /*--------------------------------------------------------------------*/
1744 u8_temp = ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf) + (UWORD64) 1;
1745 if(u8_temp != 1)
1746 {
1747 return ERROR_FEATURE_UNAVAIL;
1748 }
1749 ps_pps->u1_num_slice_groups = (UWORD8) u8_temp;
1750 COPYTHECONTEXT("PPS: num_slice_groups_minus1", ps_pps->u1_num_slice_groups - 1);
1751
1752 /*--------------------------------------------------------------------*/
1753 /* Other parameter set values */
1754 /*--------------------------------------------------------------------*/
1755 u8_temp = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1756 if(u8_temp >= H264_MAX_REF_IDX) return ERROR_REF_IDX;
1757 ps_pps->u1_num_ref_idx_lx_active[0] = (UWORD8) u8_temp;
1758 COPYTHECONTEXT("PPS: num_ref_idx_l0_active_minus1", ps_pps->u1_num_ref_idx_lx_active[0] - 1);
1759
1760 u8_temp = (UWORD64) 1 + ih264d_uev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1761 if(u8_temp >= H264_MAX_REF_IDX) return ERROR_REF_IDX;
1762 ps_pps->u1_num_ref_idx_lx_active[1] = (UWORD8) u8_temp;
1763 COPYTHECONTEXT("PPS: num_ref_idx_l1_active_minus1", ps_pps->u1_num_ref_idx_lx_active[1] - 1);
1764
1765 ps_pps->u1_wted_pred_flag = ih264d_get_bit_h264(ps_bitstrm);
1766 COPYTHECONTEXT("PPS: weighted prediction u4_flag", ps_pps->u1_wted_pred_flag);
1767 uc_temp = (UWORD8) ih264d_get_bits_h264(ps_bitstrm, 2);
1768 COPYTHECONTEXT("PPS: weighted_bipred_idc", uc_temp);
1769 ps_pps->u1_wted_bipred_idc = uc_temp;
1770
1771 if(ps_pps->u1_wted_bipred_idc > MAX_WEIGHT_BIPRED_IDC) return ERROR_INV_SPS_PPS_T;
1772
1773 {
1774 WORD64 i8_temp = (WORD64) 26 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1775
1776 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
1777
1778 ps_pps->u1_pic_init_qp = (UWORD8) i8_temp;
1779 COPYTHECONTEXT("PPS: pic_init_qp_minus26", ps_pps->u1_pic_init_qp - 26);
1780
1781 i8_temp = (WORD64) 26 + ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1782 if((i8_temp < MIN_H264_QP) || (i8_temp > MAX_H264_QP)) return ERROR_INV_RANGE_QP_T;
1783
1784 ps_pps->u1_pic_init_qs = (UWORD8) i8_temp;
1785 COPYTHECONTEXT("PPS: pic_init_qs_minus26", ps_pps->u1_pic_init_qs - 26);
1786 }
1787
1788 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1789 if((i_temp < -12) || (i_temp > 12)) return ERROR_INV_RANGE_QP_T;
1790 ps_pps->i1_chroma_qp_index_offset = i_temp;
1791 COPYTHECONTEXT("PPS: chroma_qp_index_offset", ps_pps->i1_chroma_qp_index_offset);
1792
1793 /***************************************************************************/
1794 /* initialize second_chroma_qp_index_offset to i1_chroma_qp_index_offset if */
1795 /* second_chroma_qp_index_offset is not present in bit-ps_bitstrm */
1796 /***************************************************************************/
1797 ps_pps->i1_second_chroma_qp_index_offset = ps_pps->i1_chroma_qp_index_offset;
1798
1799 ps_pps->u1_deblocking_filter_parameters_present_flag = ih264d_get_bit_h264(ps_bitstrm);
1800 COPYTHECONTEXT("PPS: deblocking_filter_control_present_flag",
1801 ps_pps->u1_deblocking_filter_parameters_present_flag);
1802 ps_pps->u1_constrained_intra_pred_flag = ih264d_get_bit_h264(ps_bitstrm);
1803 COPYTHECONTEXT("PPS: constrained_intra_pred_flag", ps_pps->u1_constrained_intra_pred_flag);
1804 ps_pps->u1_redundant_pic_cnt_present_flag = ih264d_get_bit_h264(ps_bitstrm);
1805 COPYTHECONTEXT("PPS: redundant_pic_cnt_present_flag",
1806 ps_pps->u1_redundant_pic_cnt_present_flag);
1807
1808 /* High profile related syntax elements */
1809 u1_more_data_flag = MORE_RBSP_DATA(ps_bitstrm);
1810
1811 if(u1_more_data_flag)
1812 {
1813 /* read transform_8x8_mode_flag */
1814 ps_pps->i4_transform_8x8_mode_flag = (WORD32) ih264d_get_bit_h264(ps_bitstrm);
1815
1816 /* read pic_scaling_matrix_present_flag */
1817 ps_pps->i4_pic_scaling_matrix_present_flag = (WORD32) ih264d_get_bit_h264(ps_bitstrm);
1818
1819 if(ps_pps->i4_pic_scaling_matrix_present_flag)
1820 {
1821 /* read the scaling matrices */
1822 for(i4_i = 0; i4_i < (6 + (ps_pps->i4_transform_8x8_mode_flag << 1)); i4_i++)
1823 {
1824 ps_pps->u1_pic_scaling_list_present_flag[i4_i] = ih264d_get_bit_h264(ps_bitstrm);
1825
1826 if(ps_pps->u1_pic_scaling_list_present_flag[i4_i])
1827 {
1828 WORD32 ret;
1829 if(i4_i < 6)
1830 {
1831 ret = ih264d_scaling_list(
1832 ps_pps->i2_pic_scalinglist4x4[i4_i], 16,
1833 &ps_pps->u1_pic_use_default_scaling_matrix_flag[i4_i], ps_bitstrm);
1834 }
1835 else
1836 {
1837 ret = ih264d_scaling_list(
1838 ps_pps->i2_pic_scalinglist8x8[i4_i - 6], 64,
1839 &ps_pps->u1_pic_use_default_scaling_matrix_flag[i4_i], ps_bitstrm);
1840 }
1841
1842 if(ret != OK)
1843 {
1844 return ret;
1845 }
1846 }
1847 }
1848 }
1849
1850 /* read second_chroma_qp_index_offset syntax element */
1851 i_temp = ih264d_sev(pu4_bitstrm_ofst, pu4_bitstrm_buf);
1852 if((i_temp < -12) || (i_temp > 12)) return ERROR_INV_RANGE_QP_T;
1853
1854 ps_pps->i1_second_chroma_qp_index_offset = i_temp;
1855 }
1856
1857 if(SCALABLE_BASELINE_PROFILE_IDC == ps_sps->u1_profile_idc)
1858
1859 {
1860 if(ps_pps->u1_num_slice_groups > 7)
1861 {
1862 return ERROR_INV_SPS_PPS_T;
1863 }
1864 }
1865
1866 /* In case bitstream read has exceeded the filled size, then return an error */
1867 if(EXCEED_OFFSET(ps_bitstrm))
1868 {
1869 return ERROR_INV_SPS_PPS_T;
1870 }
1871 ps_pps->u1_is_valid = TRUE;
1872 ps_dec->ps_pps[ps_pps->u1_pic_parameter_set_id] = *ps_pps;
1873 return OK;
1874 }
1875