1 /******************************************************************************
2 * *
3 * Copyright (C) 2018 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 #include <string.h>
21 #include "ixheaacd_sbr_common.h"
22 #include "ixheaacd_type_def.h"
23 #include "ixheaacd_constants.h"
24 #include "ixheaacd_basic_ops32.h"
25 #include "ixheaacd_basic_ops16.h"
26 #include "ixheaacd_basic_ops40.h"
27 #include "ixheaacd_basic_ops.h"
28 #include "ixheaacd_bitbuffer.h"
29
30 #include "ixheaacd_basic_op.h"
31 #include "ixheaacd_intrinsics.h"
32
33 #include "ixheaacd_defines.h"
34
35 #include "ixheaacd_aac_rom.h"
36
37 #include "ixheaacd_definitions.h"
38
39 #include "ixheaacd_error_codes.h"
40
41 #include "ixheaacd_pulsedata.h"
42
43 #include "ixheaacd_pns.h"
44 #include "ixheaacd_drc_data_struct.h"
45
46 #include "ixheaacd_lt_predict.h"
47
48 #include "ixheaacd_channelinfo.h"
49 #include "ixheaacd_drc_dec.h"
50 #include "ixheaacd_sbrdecoder.h"
51 #include "ixheaacd_block.h"
52 #include "ixheaacd_channel.h"
53
54 #include "ixheaacd_sbr_payload.h"
55 #include "ixheaacd_common_rom.h"
56 #include "ixheaacd_sbrdecsettings.h"
57 #include "ixheaacd_sbr_scale.h"
58 #include "ixheaacd_env_extr_part.h"
59 #include "ixheaacd_sbr_rom.h"
60 #include "ixheaacd_stereo.h"
61 #include "ixheaacd_lpp_tran.h"
62 #include "ixheaacd_hybrid.h"
63 #include "ixheaacd_ps_dec.h"
64
65 #include "ixheaacd_env_extr.h"
66 #include "ixheaacd_adts.h"
67 #include "ixheaacd_audioobjtypes.h"
68 #include "ixheaacd_memory_standards.h"
69
70 #include "ixheaacd_latmdemux.h"
71
72 #include "ixheaacd_aacdec.h"
73 #include "ixheaacd_config.h"
74 #include "ixheaacd_mps_polyphase.h"
75 #include "ixheaacd_mps_dec.h"
76 #include "ixheaacd_struct_def.h"
77
78 #include "ixheaacd_multichannel.h"
79 #include "ixheaacd_headerdecode.h"
80 #include "ixheaacd_error_standards.h"
81
ixheaacd_latm_au_chunk_length_info(struct ia_bit_buf_struct * it_bit_buff)82 WORD32 ixheaacd_latm_au_chunk_length_info(
83 struct ia_bit_buf_struct *it_bit_buff) {
84 UWORD8 reading_done;
85 WORD32 len = 0;
86
87 do {
88 UWORD32 tmp = ixheaacd_read_bits_buf(it_bit_buff, 8);
89 reading_done = (tmp < 255);
90
91 len += tmp;
92
93 } while (reading_done == 0);
94
95 len <<= 3;
96
97 return len;
98 }
99
ixheaacd_latm_payload_length_info(struct ia_bit_buf_struct * it_bit_buff,ixheaacd_latm_struct * latm_element)100 WORD32 ixheaacd_latm_payload_length_info(struct ia_bit_buf_struct *it_bit_buff,
101 ixheaacd_latm_struct *latm_element) {
102 WORD32 error_code = AAC_DEC_OK;
103 UWORD32 prog, lay;
104
105 if (latm_element->all_streams_same_time_framing == 1) {
106 for (prog = 0; prog < latm_element->num_program; prog++) {
107 for (lay = 0; lay < latm_element->num_layer; lay++) {
108 ixheaacd_latm_layer_info *layer_info =
109 &latm_element->layer_info[prog][lay];
110
111 switch (layer_info->frame_len_type) {
112 case 0:
113 layer_info->frame_len_bits =
114 ixheaacd_latm_au_chunk_length_info(it_bit_buff);
115 if (layer_info->frame_len_bits % 8 != 0) {
116 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
117 return error_code;
118 }
119
120 latm_element->frame_length = layer_info->frame_len_bits >> 3;
121 latm_element->frame_length +=
122 (it_bit_buff->size - it_bit_buff->cnt_bits) >> 3;
123 break;
124
125 default:
126 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
127 return error_code;
128 }
129 }
130 }
131 } else {
132 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
133 return error_code;
134 }
135
136 return (error_code);
137 }
138
ixheaacd_latm_get_value(ia_bit_buf_struct * it_bit_buff)139 static UWORD32 ixheaacd_latm_get_value(ia_bit_buf_struct *it_bit_buff) {
140 UWORD32 bytes_read;
141
142 bytes_read = ixheaacd_read_bits_buf(it_bit_buff, 2) + 1;
143
144 if (bytes_read <= 3)
145 return ixheaacd_read_bits_buf(it_bit_buff, 8 * bytes_read);
146 else
147 return (ixheaacd_read_bits_buf(it_bit_buff, 24) << 8) +
148 ixheaacd_read_bits_buf(it_bit_buff, 8);
149 }
150
ixheaacd_latm_stream_mux_config(struct ia_bit_buf_struct * it_bit_buff,ixheaacd_latm_struct * latm_element,ia_aac_dec_state_struct * aac_state_struct,ia_sampling_rate_info_struct * sample_rate_info)151 IA_ERRORCODE ixheaacd_latm_stream_mux_config(
152 struct ia_bit_buf_struct *it_bit_buff, ixheaacd_latm_struct *latm_element,
153 ia_aac_dec_state_struct *aac_state_struct,
154 ia_sampling_rate_info_struct *sample_rate_info) {
155 UWORD32 prog;
156 UWORD32 lay;
157 WORD32 bytes_consumed;
158 WORD32 audio_mux_version_a;
159 UWORD32 tara_buf_fullness;
160 IA_ERRORCODE error_code = AAC_DEC_OK;
161 ixheaacd_latm_layer_info *layer_info = 0;
162
163 latm_element->audio_mux_version = ixheaacd_read_bits_buf(it_bit_buff, 1);
164
165 if (latm_element->audio_mux_version == 1)
166 audio_mux_version_a = ixheaacd_read_bits_buf(it_bit_buff, 1);
167 else
168 audio_mux_version_a = 0;
169
170 if (audio_mux_version_a == 0) {
171 if (latm_element->audio_mux_version == 1) {
172 tara_buf_fullness = ixheaacd_latm_get_value(it_bit_buff);
173 }
174 latm_element->all_streams_same_time_framing =
175 ixheaacd_read_bits_buf(it_bit_buff, 1);
176
177 latm_element->num_sub_frames = ixheaacd_read_bits_buf(it_bit_buff, 6) + 1;
178
179 if (latm_element->num_sub_frames != 1)
180 return IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
181
182 latm_element->num_program = ixheaacd_read_bits_buf(it_bit_buff, 4) + 1;
183
184 if (latm_element->num_program > LATM_MAX_PROG) return IA_FATAL_ERROR;
185
186 for (prog = 0; prog < latm_element->num_program; prog++) {
187 latm_element->num_layer = ixheaacd_read_bits_buf(it_bit_buff, 3) + 1;
188
189 for (lay = 0; lay < latm_element->num_layer; lay++) {
190 layer_info = &latm_element->layer_info[prog][lay];
191 layer_info->frame_len_bits = 0;
192
193 if ((prog == 0) && (lay == 0)) {
194 WORD32 asc_len, pos;
195
196 latm_element->use_same_config = 0;
197
198 asc_len = (latm_element->audio_mux_version == 1)
199 ? ixheaacd_latm_get_value(it_bit_buff)
200 : 0;
201 pos = it_bit_buff->size - it_bit_buff->cnt_bits;
202
203 if (asc_len > it_bit_buff->size - 106 || asc_len > 2592 ||
204 asc_len < 0) {
205 return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL;
206 }
207
208 if ((error_code = ixheaacd_ga_hdr_dec(
209 aac_state_struct, it_bit_buff->cnt_bits, &bytes_consumed,
210 sample_rate_info, it_bit_buff)))
211 return (error_code);
212
213 if (asc_len) {
214 asc_len -= (it_bit_buff->size - it_bit_buff->cnt_bits) - pos;
215 ixheaacd_read_bidirection(it_bit_buff, asc_len);
216 }
217
218 layer_info->asc.aot = aac_state_struct->audio_object_type;
219 layer_info->asc.channel_config = aac_state_struct->ch_config;
220 layer_info->asc.samples_per_frame = aac_state_struct->frame_len_flag;
221 layer_info->asc.sampling_freq = aac_state_struct->sampling_rate;
222 layer_info->asc.samples_per_frame = aac_state_struct->frame_length;
223 } else {
224 latm_element->use_same_config =
225 ixheaacd_read_bits_buf(it_bit_buff, 1);
226
227 if (latm_element->use_same_config && (lay > 0)) {
228 layer_info->asc = latm_element->layer_info[prog][lay - 1].asc;
229 } else {
230 if ((error_code = ixheaacd_ga_hdr_dec(
231 aac_state_struct, it_bit_buff->cnt_bits, &bytes_consumed,
232 sample_rate_info, it_bit_buff)))
233 return (error_code);
234 }
235 }
236
237 layer_info->frame_len_type = ixheaacd_read_bits_buf(it_bit_buff, 3);
238
239 switch (layer_info->frame_len_type) {
240 case 0:
241 layer_info->buffer_fullness =
242 ixheaacd_read_bits_buf(it_bit_buff, 8);
243
244 if (!latm_element->all_streams_same_time_framing) {
245 if ((lay > 0) && layer_info->asc.aot == AOT_AAC_SCAL) {
246 }
247 }
248 break;
249
250 default:
251 return IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
252 }
253 }
254 }
255
256 latm_element->other_data_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
257
258 if (latm_element->other_data_present) {
259 if (latm_element->audio_mux_version == 1) {
260 latm_element->other_data_length = ixheaacd_latm_get_value(it_bit_buff);
261 } else {
262 UWORD32 other_data_len;
263 latm_element->other_data_length = 0;
264 do {
265 other_data_len = ixheaacd_read_bits_buf(it_bit_buff, 1);
266 latm_element->other_data_length <<= 8;
267 latm_element->other_data_length +=
268 ixheaacd_read_bits_buf(it_bit_buff, 8);
269 if (latm_element->other_data_length > (UWORD32)it_bit_buff->cnt_bits)
270 return IA_FATAL_ERROR;
271 } while (other_data_len);
272 }
273 }
274
275 latm_element->crc_check_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
276
277 if (latm_element->crc_check_present) {
278 latm_element->crc_check_sum = ixheaacd_read_bits_buf(it_bit_buff, 8);
279 }
280 } else {
281 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
282 }
283 return (error_code);
284 }
285
ixheaacd_latm_audio_mux_element(struct ia_bit_buf_struct * it_bit_buff,ixheaacd_latm_struct * latm_element,ia_aac_dec_state_struct * aac_state_struct,ia_sampling_rate_info_struct * sample_rate_info)286 IA_ERRORCODE ixheaacd_latm_audio_mux_element(
287 struct ia_bit_buf_struct *it_bit_buff, ixheaacd_latm_struct *latm_element,
288 ia_aac_dec_state_struct *aac_state_struct,
289 ia_sampling_rate_info_struct *sample_rate_info) {
290 UWORD32 i;
291 IA_ERRORCODE error_code = AAC_DEC_OK;
292
293 ixheaacd_read_bits_buf(it_bit_buff, 13);
294
295 latm_element->use_same_stream_mux = ixheaacd_read_bits_buf(it_bit_buff, 1);
296
297 if (!latm_element->use_same_stream_mux) {
298 if ((error_code = ixheaacd_latm_stream_mux_config(
299 it_bit_buff, latm_element, aac_state_struct, sample_rate_info))) {
300 return (error_code);
301 }
302 }
303
304 for (i = 0; i < latm_element->num_sub_frames; i++) {
305 if ((error_code =
306 ixheaacd_latm_payload_length_info(it_bit_buff, latm_element))) {
307 if (error_code != 0) return (error_code);
308 }
309 }
310
311 return (error_code);
312 }
313