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
57 #include <ixheaacd_type_def.h>
58
59 #include "ixheaacd_sbrdecsettings.h"
60 #include "ixheaacd_sbr_scale.h"
61 #include "ixheaacd_env_extr_part.h"
62 #include "ixheaacd_sbr_rom.h"
63 #include "ixheaacd_stereo.h"
64 #include "ixheaacd_lpp_tran.h"
65 #include "ixheaacd_hybrid.h"
66 #include "ixheaacd_ps_dec.h"
67
68 #include "ixheaacd_env_extr.h"
69 #include "ixheaacd_adts.h"
70 #include "ixheaacd_audioobjtypes.h"
71 #include "ixheaacd_memory_standards.h"
72
73 #include "ixheaacd_latmdemux.h"
74
75 #include "ixheaacd_aacdec.h"
76 #include "ixheaacd_config.h"
77 #include "ixheaacd_mps_polyphase.h"
78 #include "ixheaacd_mps_dec.h"
79 #include "ixheaacd_struct_def.h"
80
81 #include "ixheaacd_multichannel.h"
82 #include "ixheaacd_headerdecode.h"
83 #include "ixheaacd_error_standards.h"
84
ixheaacd_latm_au_chunk_length_info(struct ia_bit_buf_struct * it_bit_buff)85 WORD32 ixheaacd_latm_au_chunk_length_info(
86 struct ia_bit_buf_struct *it_bit_buff) {
87 UWORD8 reading_done;
88 WORD32 len = 0;
89
90 do {
91 UWORD32 tmp = ixheaacd_read_bits_buf(it_bit_buff, 8);
92 reading_done = (tmp < 255);
93
94 len += tmp;
95
96 } while (reading_done == 0);
97
98 len <<= 3;
99
100 return len;
101 }
102
ixheaacd_latm_payload_length_info(struct ia_bit_buf_struct * it_bit_buff,ixheaacd_latm_struct * latm_element)103 WORD32 ixheaacd_latm_payload_length_info(struct ia_bit_buf_struct *it_bit_buff,
104 ixheaacd_latm_struct *latm_element) {
105 WORD32 error_code = AAC_DEC_OK;
106 UWORD32 prog, lay;
107
108 if (latm_element->all_streams_same_time_framing == 1) {
109 for (prog = 0; prog < latm_element->num_program; prog++) {
110 for (lay = 0; lay < latm_element->num_layer; lay++) {
111 ixheaacd_latm_layer_info *layer_info =
112 &latm_element->layer_info[prog][lay];
113
114 switch (layer_info->frame_len_type) {
115 case 0:
116 layer_info->frame_len_bits =
117 ixheaacd_latm_au_chunk_length_info(it_bit_buff);
118 if (layer_info->frame_len_bits % 8 != 0) {
119 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
120 return error_code;
121 }
122
123 latm_element->frame_length = layer_info->frame_len_bits >> 3;
124 latm_element->frame_length +=
125 (it_bit_buff->size - it_bit_buff->cnt_bits) >> 3;
126 break;
127
128 default:
129 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
130 return error_code;
131 }
132 }
133 }
134 } else {
135 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
136 return error_code;
137 }
138
139 return (error_code);
140 }
141
ixheaacd_latm_get_value(ia_bit_buf_struct * it_bit_buff)142 static UWORD32 ixheaacd_latm_get_value(ia_bit_buf_struct *it_bit_buff) {
143 UWORD32 bytes_read;
144
145 bytes_read = ixheaacd_read_bits_buf(it_bit_buff, 2) + 1;
146
147 if (bytes_read <= 3)
148 return ixheaacd_read_bits_buf(it_bit_buff, 8 * bytes_read);
149 else
150 return (ixheaacd_read_bits_buf(it_bit_buff, 24) << 8) +
151 ixheaacd_read_bits_buf(it_bit_buff, 8);
152 }
153
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)154 IA_ERRORCODE ixheaacd_latm_stream_mux_config(
155 struct ia_bit_buf_struct *it_bit_buff, ixheaacd_latm_struct *latm_element,
156 ia_aac_dec_state_struct *aac_state_struct,
157 ia_sampling_rate_info_struct *sample_rate_info) {
158 UWORD32 prog;
159 UWORD32 lay;
160 WORD32 bytes_consumed;
161 WORD32 audio_mux_version_a;
162 UWORD32 tara_buf_fullness;
163 IA_ERRORCODE error_code = AAC_DEC_OK;
164 ixheaacd_latm_layer_info *layer_info = 0;
165
166 latm_element->audio_mux_version = ixheaacd_read_bits_buf(it_bit_buff, 1);
167
168 if (latm_element->audio_mux_version == 1)
169 audio_mux_version_a = ixheaacd_read_bits_buf(it_bit_buff, 1);
170 else
171 audio_mux_version_a = 0;
172
173 if (audio_mux_version_a == 0) {
174 if (latm_element->audio_mux_version == 1) {
175 tara_buf_fullness = ixheaacd_latm_get_value(it_bit_buff);
176 }
177 latm_element->all_streams_same_time_framing =
178 ixheaacd_read_bits_buf(it_bit_buff, 1);
179
180 latm_element->num_sub_frames = ixheaacd_read_bits_buf(it_bit_buff, 6) + 1;
181
182 if (latm_element->num_sub_frames != 1)
183 return IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
184
185 latm_element->num_program = ixheaacd_read_bits_buf(it_bit_buff, 4) + 1;
186
187 if (latm_element->num_program > LATM_MAX_PROG) return IA_FATAL_ERROR;
188
189 for (prog = 0; prog < latm_element->num_program; prog++) {
190 latm_element->num_layer = ixheaacd_read_bits_buf(it_bit_buff, 3) + 1;
191
192 for (lay = 0; lay < latm_element->num_layer; lay++) {
193 layer_info = &latm_element->layer_info[prog][lay];
194 layer_info->frame_len_bits = 0;
195
196 if ((prog == 0) && (lay == 0)) {
197 WORD32 asc_len, pos;
198
199 latm_element->use_same_config = 0;
200
201 asc_len = (latm_element->audio_mux_version == 1)
202 ? ixheaacd_latm_get_value(it_bit_buff)
203 : 0;
204 pos = it_bit_buff->size - it_bit_buff->cnt_bits;
205
206 if (asc_len > it_bit_buff->size - 106 || asc_len > 2592 ||
207 asc_len < 0) {
208 return IA_ENHAACPLUS_DEC_INIT_FATAL_DEC_INIT_FAIL;
209 }
210
211 if ((error_code = ixheaacd_ga_hdr_dec(
212 aac_state_struct, it_bit_buff->cnt_bits, &bytes_consumed,
213 sample_rate_info, it_bit_buff)))
214 return (error_code);
215
216 if (asc_len) {
217 asc_len -= (it_bit_buff->size - it_bit_buff->cnt_bits) - pos;
218 ixheaacd_read_bidirection(it_bit_buff, asc_len);
219 }
220
221 layer_info->asc.aot = aac_state_struct->audio_object_type;
222 layer_info->asc.channel_config = aac_state_struct->ch_config;
223 layer_info->asc.samples_per_frame = aac_state_struct->frame_len_flag;
224 layer_info->asc.sampling_freq = aac_state_struct->sampling_rate;
225 layer_info->asc.samples_per_frame = aac_state_struct->frame_length;
226 } else {
227 latm_element->use_same_config =
228 ixheaacd_read_bits_buf(it_bit_buff, 1);
229
230 if (latm_element->use_same_config && (lay > 0)) {
231 layer_info->asc = latm_element->layer_info[prog][lay - 1].asc;
232 } else {
233 if ((error_code = ixheaacd_ga_hdr_dec(
234 aac_state_struct, it_bit_buff->cnt_bits, &bytes_consumed,
235 sample_rate_info, it_bit_buff)))
236 return (error_code);
237 }
238 }
239
240 layer_info->frame_len_type = ixheaacd_read_bits_buf(it_bit_buff, 3);
241
242 switch (layer_info->frame_len_type) {
243 case 0:
244 layer_info->buffer_fullness =
245 ixheaacd_read_bits_buf(it_bit_buff, 8);
246
247 if (!latm_element->all_streams_same_time_framing) {
248 if ((lay > 0) && layer_info->asc.aot == AOT_AAC_SCAL) {
249 }
250 }
251 break;
252
253 default:
254 return IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
255 }
256 }
257 }
258
259 latm_element->other_data_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
260
261 if (latm_element->other_data_present) {
262 if (latm_element->audio_mux_version == 1) {
263 latm_element->other_data_length = ixheaacd_latm_get_value(it_bit_buff);
264 } else {
265 UWORD32 other_data_len;
266 latm_element->other_data_length = 0;
267 do {
268 other_data_len = ixheaacd_read_bits_buf(it_bit_buff, 1);
269 latm_element->other_data_length <<= 8;
270 latm_element->other_data_length +=
271 ixheaacd_read_bits_buf(it_bit_buff, 8);
272 if (latm_element->other_data_length > (UWORD32)it_bit_buff->cnt_bits)
273 return IA_FATAL_ERROR;
274 } while (other_data_len);
275 }
276 }
277
278 latm_element->crc_check_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
279
280 if (latm_element->crc_check_present) {
281 latm_element->crc_check_sum = ixheaacd_read_bits_buf(it_bit_buff, 8);
282 }
283 } else {
284 error_code = IA_ENHAACPLUS_DEC_EXE_FATAL_INVALID_LOAS_HEADER;
285 }
286 return (error_code);
287 }
288
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)289 IA_ERRORCODE ixheaacd_latm_audio_mux_element(
290 struct ia_bit_buf_struct *it_bit_buff, ixheaacd_latm_struct *latm_element,
291 ia_aac_dec_state_struct *aac_state_struct,
292 ia_sampling_rate_info_struct *sample_rate_info) {
293 UWORD32 i;
294 IA_ERRORCODE error_code = AAC_DEC_OK;
295
296 ixheaacd_read_bits_buf(it_bit_buff, 13);
297
298 latm_element->use_same_stream_mux = ixheaacd_read_bits_buf(it_bit_buff, 1);
299
300 if (!latm_element->use_same_stream_mux) {
301 if ((error_code = ixheaacd_latm_stream_mux_config(
302 it_bit_buff, latm_element, aac_state_struct, sample_rate_info))) {
303 return (error_code);
304 }
305 }
306
307 for (i = 0; i < latm_element->num_sub_frames; i++) {
308 if ((error_code =
309 ixheaacd_latm_payload_length_info(it_bit_buff, latm_element))) {
310 if (error_code != 0) return (error_code);
311 }
312 }
313
314 return (error_code);
315 }
316