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gerrit-public.fairphone.software / platform / external / libavc / refs/heads/int/10/fp2 / . / decoder / ih264d_sei.c
blob: 39be7824b09c6219e8ccac0a58d5a673e2687004 [file] [log] [blame]
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]1/******************************************************************************
2 *
3 * Copyright (C) 2015 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *****************************************************************************
18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19*/
20
21/*****************************************************************************/
22/* */
23/* File Name : ih264d_sei.c */
24/* */
25/* Description : This file contains routines to parse SEI NAL's */
26/* */
27/* List of Functions : <List the functions defined in this file> */
28/* */
29/* Issues / Problems : None */
30/* */
31/* Revision History : */
32/* */
33/* DD MM YYYY Author(s) Changes (Describe the changes made) */
34/* 25 05 2005 NS Draft */
35/* */
36/*****************************************************************************/
37
38#include "ih264_typedefs.h"
39#include "ih264_macros.h"
40#include "ih264_platform_macros.h"
41#include "ih264d_sei.h"
42#include "ih264d_bitstrm.h"
43#include "ih264d_structs.h"
44#include "ih264d_error_handler.h"
45#include "ih264d_vui.h"
46#include "ih264d_parse_cavlc.h"
47#include "ih264d_defs.h"
48
49/*****************************************************************************/
50/* */
51/* Function Name : ih264d_parse_buffering_period */
52/* */
53/* Description : This function parses SEI message buffering_period */
54/* Inputs : ps_buf_prd pointer to struct buf_period_t */
55/* ps_bitstrm Bitstream */
56/* Globals : None */
57/* Processing : Parses SEI payload buffering period. */
58/* Outputs : None */
59/* Returns : None */
60/* */
61/* Issues : Not implemented fully */
62/* */
63/* Revision History: */
64/* */
65/* DD MM YYYY Author(s) Changes (Describe the changes made) */
66/* 06 05 2002 NS Draft */
67/* */
68/*****************************************************************************/
69
70WORD32 ih264d_parse_buffering_period(buf_period_t *ps_buf_prd,
71 dec_bit_stream_t *ps_bitstrm,
72 dec_struct_t *ps_dec)
73{
74 UWORD8 u1_seq_parameter_set_id;
75 dec_seq_params_t *ps_seq;
76 UWORD8 u1_nal_hrd_present, u1_vcl_hrd_present;
77 UWORD32 i;
78 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
79 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
80 UNUSED(ps_buf_prd);
81 u1_seq_parameter_set_id = ih264d_uev(pu4_bitstrm_ofst,
82 pu4_bitstrm_buf);
Harish Mahendrakar99a85bb2017-01-13 11:23:29 +0530[diff] [blame]83 if(u1_seq_parameter_set_id >= MAX_NUM_SEQ_PARAMS)
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]84 return ERROR_INVALID_SEQ_PARAM;
85 ps_seq = &ps_dec->ps_sps[u1_seq_parameter_set_id];
86 if(TRUE != ps_seq->u1_is_valid)
87 return (-1);
88
89 ps_dec->ps_sei->u1_seq_param_set_id = u1_seq_parameter_set_id;
90 ps_dec->ps_cur_sps = ps_seq;
91 if(FALSE == ps_seq->u1_is_valid)
92 return ERROR_INVALID_SEQ_PARAM;
93 if(1 == ps_seq->u1_vui_parameters_present_flag)
94 {
95 u1_nal_hrd_present = ps_seq->s_vui.u1_nal_hrd_params_present;
96 if(u1_nal_hrd_present)
97 {
98 for(i = 0; i < ps_seq->s_vui.s_nal_hrd.u4_cpb_cnt; i++)
99 {
100 ih264d_get_bits_h264(
101 ps_bitstrm,
102 ps_seq->s_vui.s_nal_hrd.u1_initial_cpb_removal_delay);
103 ih264d_get_bits_h264(
104 ps_bitstrm,
105 ps_seq->s_vui.s_nal_hrd.u1_initial_cpb_removal_delay);
106 }
107 }
108
109 u1_vcl_hrd_present = ps_seq->s_vui.u1_vcl_hrd_params_present;
110 if(u1_vcl_hrd_present)
111 {
112 for(i = 0; i < ps_seq->s_vui.s_vcl_hrd.u4_cpb_cnt; i++)
113 {
114 ih264d_get_bits_h264(
115 ps_bitstrm,
116 ps_seq->s_vui.s_vcl_hrd.u1_initial_cpb_removal_delay);
117 ih264d_get_bits_h264(
118 ps_bitstrm,
119 ps_seq->s_vui.s_vcl_hrd.u1_initial_cpb_removal_delay);
120 }
121 }
122 }
123 return OK;
124}
125
126/*****************************************************************************/
127/* */
128/* Function Name : ih264d_parse_pic_timing */
129/* */
130/* Description : This function parses SEI message pic_timing */
131/* Inputs : ps_bitstrm Bitstream */
132/* ps_dec Poniter decoder context */
133/* ui4_payload_size pay load i4_size */
134/* Globals : None */
135/* Processing : Parses SEI payload picture timing */
136/* Outputs : None */
137/* Returns : None */
138/* */
139/* Issues : Not implemented fully */
140/* */
141/* Revision History: */
142/* */
143/* DD MM YYYY Author(s) Changes (Describe the changes made) */
144/* 06 05 2002 NS Draft */
145/* */
146/*****************************************************************************/
147WORD32 ih264d_parse_pic_timing(dec_bit_stream_t *ps_bitstrm,
148 dec_struct_t *ps_dec,
149 UWORD32 ui4_payload_size)
150{
151 sei *ps_sei;
152 vui_t *ps_vu4;
153 UWORD8 u1_cpb_dpb_present;
154 UWORD8 u1_pic_struct_present_flag;
155 UWORD32 u4_start_offset, u4_bits_consumed;
156 UWORD8 u1_cpb_removal_delay_length, u1_dpb_output_delay_length;
157
158 ps_sei = (sei *)ps_dec->ps_sei;
159 ps_vu4 = &ps_dec->ps_cur_sps->s_vui;
160
161 u1_cpb_dpb_present = ps_vu4->u1_vcl_hrd_params_present
162 + ps_vu4->u1_nal_hrd_params_present;
163
164 if(ps_vu4->u1_vcl_hrd_params_present)
165 {
166 u1_cpb_removal_delay_length =
167 ps_vu4->s_vcl_hrd.u1_cpb_removal_delay_length;
168 u1_dpb_output_delay_length =
169 ps_vu4->s_vcl_hrd.u1_dpb_output_delay_length;
170 }
171 else if(ps_vu4->u1_nal_hrd_params_present)
172 {
173 u1_cpb_removal_delay_length =
174 ps_vu4->s_nal_hrd.u1_cpb_removal_delay_length;
175 u1_dpb_output_delay_length =
176 ps_vu4->s_nal_hrd.u1_dpb_output_delay_length;
177 }
178 else
179 {
180 u1_cpb_removal_delay_length = 24;
181 u1_dpb_output_delay_length = 24;
182
183 }
184
185 u4_start_offset = ps_bitstrm->u4_ofst;
186 if(u1_cpb_dpb_present)
187 {
188 ih264d_get_bits_h264(ps_bitstrm, u1_cpb_removal_delay_length);
189 ih264d_get_bits_h264(ps_bitstrm, u1_dpb_output_delay_length);
190 }
191
192 u1_pic_struct_present_flag = ps_vu4->u1_pic_struct_present_flag;
193 if(u1_pic_struct_present_flag)
194 {
195 ps_sei->u1_pic_struct = ih264d_get_bits_h264(ps_bitstrm, 4);
196 ps_dec->u1_pic_struct_copy = ps_sei->u1_pic_struct;
197 ps_sei->u1_is_valid = 1;
198 }
199 u4_bits_consumed = ps_bitstrm->u4_ofst - u4_start_offset;
Isha Kulkarni34769a52019-01-28 17:43:35 +0530[diff] [blame]200
201 if((ui4_payload_size << 3) < u4_bits_consumed)
202 return ERROR_CORRUPTED_SLICE;
203
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]204 ih264d_flush_bits_h264(ps_bitstrm,
205 (ui4_payload_size << 3) - u4_bits_consumed);
206
207 return (0);
208}
209
210/*****************************************************************************/
211/* */
212/* Function Name : ih264d_parse_recovery_point */
213/* */
214/* Description : This function parses SEI message recovery point */
215/* Inputs : ps_bitstrm Bitstream */
216/* ps_dec Poniter decoder context */
217/* ui4_payload_size pay load i4_size */
218/* Globals : None */
219/* Processing : Parses SEI payload picture timing */
220/* Outputs : None */
221/* Returns : None */
222/* */
223/* Issues : Not implemented fully */
224/* */
225/* Revision History: */
226/* */
227/* DD MM YYYY Author(s) Changes (Describe the changes made) */
228/* 06 05 2002 NS Draft */
229/* */
230/*****************************************************************************/
231WORD32 ih264d_parse_recovery_point(dec_bit_stream_t *ps_bitstrm,
232 dec_struct_t *ps_dec,
233 UWORD32 ui4_payload_size)
234{
235 sei *ps_sei = ps_dec->ps_sei;
236 dec_err_status_t *ps_err = ps_dec->ps_dec_err_status;
237 UWORD32 *pu4_bitstrm_ofst = &ps_bitstrm->u4_ofst;
238 UWORD32 *pu4_bitstrm_buf = ps_bitstrm->pu4_buffer;
239 UNUSED(ui4_payload_size);
240 ps_sei->u2_recovery_frame_cnt = ih264d_uev(pu4_bitstrm_ofst,
241 pu4_bitstrm_buf);
242 ps_err->u4_frm_sei_sync = ps_err->u4_cur_frm
243 + ps_sei->u2_recovery_frame_cnt;
244 ps_sei->u1_exact_match_flag = ih264d_get_bit_h264(ps_bitstrm);
245 ps_sei->u1_broken_link_flag = ih264d_get_bit_h264(ps_bitstrm);
246 ps_sei->u1_changing_slice_grp_idc = ih264d_get_bits_h264(ps_bitstrm, 2);
247
248 return (0);
249}
250
251/*****************************************************************************/
252/* */
253/* Function Name : ih264d_parse_sei_payload */
254/* */
255/* Description : This function parses SEI pay loads. Currently it's */
256/* implemented partially. */
257/* Inputs : ps_bitstrm Bitstream */
258/* ui4_payload_type SEI payload type */
259/* ui4_payload_size SEI payload i4_size */
260/* Globals : None */
261/* Processing : Parses SEI payloads units and stores the info */
262/* Outputs : None */
263/* Returns : None */
264/* */
265/* Issues : Not implemented fully */
266/* */
267/* Revision History: */
268/* */
269/* DD MM YYYY Author(s) Changes (Describe the changes made) */
270/* 06 05 2002 NS Draft */
271/* */
272/*****************************************************************************/
273
274WORD32 ih264d_parse_sei_payload(dec_bit_stream_t *ps_bitstrm,
275 UWORD32 ui4_payload_type,
276 UWORD32 ui4_payload_size,
277 dec_struct_t *ps_dec)
278{
279 sei *ps_sei;
280 WORD32 i4_status = 0;
281 ps_sei = (sei *)ps_dec->ps_sei;
Isha Kulkarni34769a52019-01-28 17:43:35 +0530[diff] [blame]282
283 if(ui4_payload_size == 0)
284 return -1;
285
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]286 switch(ui4_payload_type)
287 {
288 case SEI_BUF_PERIOD:
289
290 i4_status = ih264d_parse_buffering_period(&ps_sei->s_buf_period,
291 ps_bitstrm, ps_dec);
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]292 break;
293 case SEI_PIC_TIMING:
294 if(NULL == ps_dec->ps_cur_sps)
Isha Kulkarni34769a52019-01-28 17:43:35 +0530[diff] [blame]295 i4_status = ih264d_flush_bits_h264(ps_bitstrm, (ui4_payload_size << 3));
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]296 else
Isha Kulkarni34769a52019-01-28 17:43:35 +0530[diff] [blame]297 i4_status = ih264d_parse_pic_timing(ps_bitstrm, ps_dec,
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]298 ui4_payload_size);
299 break;
300 case SEI_RECOVERY_PT:
Isha Kulkarni34769a52019-01-28 17:43:35 +0530[diff] [blame]301 i4_status = ih264d_parse_recovery_point(ps_bitstrm, ps_dec,
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]302 ui4_payload_size);
303 break;
304 default:
Isha Kulkarni34769a52019-01-28 17:43:35 +0530[diff] [blame]305 i4_status = ih264d_flush_bits_h264(ps_bitstrm, (ui4_payload_size << 3));
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]306 break;
307 }
308 return (i4_status);
309}
310
311/*****************************************************************************/
312/* */
313/* Function Name : ih264d_parse_sei_message */
314/* */
315/* Description : This function is parses and decode SEI. Currently it's */
316/* not implemented fully. */
317/* Inputs : ps_dec Decoder parameters */
318/* ps_bitstrm Bitstream */
319/* Globals : None */
320/* Processing : Parses SEI NAL units and stores the info */
321/* Outputs : None */
322/* Returns : None */
323/* */
324/* Issues : Not implemented fully */
325/* */
326/* Revision History: */
327/* */
328/* DD MM YYYY Author(s) Changes (Describe the changes made) */
329/* 06 05 2002 NS Draft */
330/* */
331/*****************************************************************************/
332
333WORD32 ih264d_parse_sei_message(dec_struct_t *ps_dec,
334 dec_bit_stream_t *ps_bitstrm)
335{
336 UWORD32 ui4_payload_type, ui4_payload_size;
337 UWORD32 u4_bits;
338 WORD32 i4_status = 0;
339
340 do
341 {
342 ui4_payload_type = 0;
343
344 u4_bits = ih264d_get_bits_h264(ps_bitstrm, 8);
Hamsalekha Sf2b70d32017-07-04 17:06:50 +0530[diff] [blame]345 while(0xff == u4_bits && !EXCEED_OFFSET(ps_bitstrm))
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]346 {
347 u4_bits = ih264d_get_bits_h264(ps_bitstrm, 8);
348 ui4_payload_type += 255;
349 }
350 ui4_payload_type += u4_bits;
351
352 ui4_payload_size = 0;
353 u4_bits = ih264d_get_bits_h264(ps_bitstrm, 8);
Hamsalekha Sf2b70d32017-07-04 17:06:50 +0530[diff] [blame]354 while(0xff == u4_bits && !EXCEED_OFFSET(ps_bitstrm))
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]355 {
356 u4_bits = ih264d_get_bits_h264(ps_bitstrm, 8);
357 ui4_payload_size += 255;
358 }
359 ui4_payload_size += u4_bits;
360
361 i4_status = ih264d_parse_sei_payload(ps_bitstrm, ui4_payload_type,
362 ui4_payload_size, ps_dec);
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]363 if(i4_status != OK)
364 return i4_status;
365
366 if(ih264d_check_byte_aligned(ps_bitstrm) == 0)
367 {
368 u4_bits = ih264d_get_bit_h264(ps_bitstrm);
369 if(0 == u4_bits)
370 {
371 H264_DEC_DEBUG_PRINT("\nError in parsing SEI message");
372 }
Hamsalekha Sf2b70d32017-07-04 17:06:50 +0530[diff] [blame]373 while(0 == ih264d_check_byte_aligned(ps_bitstrm)
374 && !EXCEED_OFFSET(ps_bitstrm))
Hamsalekha S8d3d3032015-03-13 21:24:58 +0530[diff] [blame]375 {
376 u4_bits = ih264d_get_bit_h264(ps_bitstrm);
377 if(u4_bits)
378 {
379 H264_DEC_DEBUG_PRINT("\nError in parsing SEI message");
380 }
381 }
382 }
383 }
384 while(ps_bitstrm->u4_ofst < ps_bitstrm->u4_max_ofst);
385 return (i4_status);
386}
387