/src/libxaac/decoder/ixheaacd_ps_bitdec.c
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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 "ixheaac_type_def.h" |
23 | | |
24 | | #include "ixheaac_constants.h" |
25 | | #include "ixheaac_basic_ops32.h" |
26 | | #include "ixheaac_basic_ops16.h" |
27 | | #include "ixheaac_basic_ops40.h" |
28 | | #include "ixheaac_basic_ops.h" |
29 | | |
30 | | #include "ixheaac_basic_op.h" |
31 | | #include "ixheaacd_intrinsics.h" |
32 | | #include "ixheaacd_bitbuffer.h" |
33 | | #include "ixheaacd_sbrdecsettings.h" |
34 | | #include "ixheaacd_sbr_scale.h" |
35 | | #include "ixheaacd_lpp_tran.h" |
36 | | #include "ixheaacd_env_extr_part.h" |
37 | | #include "ixheaacd_sbr_rom.h" |
38 | | |
39 | | #include "ixheaacd_hybrid.h" |
40 | | #include "ixheaacd_ps_dec.h" |
41 | | |
42 | | #include "ixheaacd_env_extr.h" |
43 | | #include "ixheaacd_ps_bitdec.h" |
44 | | |
45 | | const WORD16 ixheaacd_num_bands[3] = {10, 20, 34}; |
46 | | |
47 | 3.33k | static WORD32 ixheaacd_clamp(WORD32 i, WORD16 min, WORD16 max) { |
48 | 3.33k | WORD32 result = i; |
49 | | |
50 | 3.33k | if (i < min) { |
51 | 71 | result = min; |
52 | 3.25k | } else { |
53 | 3.25k | if (i > max) { |
54 | 33 | result = max; |
55 | 33 | } |
56 | 3.25k | } |
57 | | |
58 | 3.33k | return result; |
59 | 3.33k | } |
60 | | |
61 | 20.8k | WORD16 ixheaacd_divideby2(WORD op) { |
62 | 20.8k | FLAG sign = (op < 0); |
63 | | |
64 | 20.8k | if (sign) { |
65 | 53 | op = -(op); |
66 | 53 | } |
67 | | |
68 | 20.8k | op = (op >> 1); |
69 | | |
70 | 20.8k | if (sign) { |
71 | 53 | op = -op; |
72 | 53 | } |
73 | | |
74 | 20.8k | return (WORD16)op; |
75 | 20.8k | } |
76 | | |
77 | 7.59k | WORD16 ixheaacd_divideby3(WORD op) { |
78 | 7.59k | WORD16 temp, ret; |
79 | 7.59k | FLAG sign = (op < 0); |
80 | | |
81 | 7.59k | if (sign) { |
82 | 64 | op = -(op); |
83 | 64 | } |
84 | | |
85 | 7.59k | temp = (WORD16)(op << 2); |
86 | | |
87 | 7.59k | temp = ixheaac_mult16_shl(temp, 0x2aab); |
88 | | |
89 | 7.59k | ret = (temp >> 2); |
90 | | |
91 | 7.59k | if (sign) { |
92 | 64 | ret = -(ret); |
93 | 64 | } |
94 | | |
95 | 7.59k | return (WORD16)ret; |
96 | 7.59k | } |
97 | | |
98 | 9.07k | VOID ixheaacd_decode_ps_data(ia_ps_dec_struct *ptr_ps_dec, WORD32 frame_size) { |
99 | 9.07k | WORD e, i, temp; |
100 | 9.07k | WORD16 iid_mode = (WORD16)((ptr_ps_dec->iid_mode) ? 1 : 2); |
101 | 9.07k | WORD16 icc_mode = (WORD16)((ptr_ps_dec->icc_mode) ? 1 : 2); |
102 | 9.07k | WORD16 num_iid_levels = |
103 | 9.07k | (WORD16)(ptr_ps_dec->iid_quant ? NUM_IID_LEVELS_FINE : NUM_IID_LEVELS); |
104 | 9.07k | WORD32 max_num_columns; |
105 | | |
106 | 9.07k | if (frame_size == 960) |
107 | 0 | max_num_columns = MAX_NUM_COLUMNS_960; |
108 | 9.07k | else |
109 | 9.07k | max_num_columns = MAX_NUM_COLUMNS; |
110 | | |
111 | 9.07k | if (!ptr_ps_dec->ps_data_present) { |
112 | 7.52k | ptr_ps_dec->num_env = 0; |
113 | 7.52k | } |
114 | | |
115 | 10.7k | for (e = 0; e < ptr_ps_dec->num_env; e++) { |
116 | 1.63k | WORD16 *p_iid_par_prev; |
117 | 1.63k | WORD16 *p_icc_par_prev; |
118 | | |
119 | 1.63k | if (e == 0) { |
120 | 1.49k | p_iid_par_prev = ptr_ps_dec->iid_par_prev; |
121 | 1.49k | p_icc_par_prev = ptr_ps_dec->icc_par_prev; |
122 | 1.49k | } else { |
123 | 145 | p_iid_par_prev = ptr_ps_dec->iid_par_table[e - 1]; |
124 | 145 | p_icc_par_prev = ptr_ps_dec->icc_par_table[e - 1]; |
125 | 145 | } |
126 | | |
127 | 1.63k | if (ptr_ps_dec->enable_iid) { |
128 | 153 | if (ptr_ps_dec->iid_dt[e]) { |
129 | 1.43k | for (i = 0; i < ixheaacd_num_bands[ptr_ps_dec->iid_mode]; i++) { |
130 | 1.32k | temp = |
131 | 1.32k | ixheaac_add16(*p_iid_par_prev, ptr_ps_dec->iid_par_table[e][i]); |
132 | 1.32k | ptr_ps_dec->iid_par_table[e][i] = ixheaacd_clamp( |
133 | 1.32k | temp, ixheaac_negate16(num_iid_levels), num_iid_levels); |
134 | 1.32k | p_iid_par_prev += iid_mode; |
135 | 1.32k | } |
136 | 118 | } else { |
137 | 35 | ptr_ps_dec->iid_par_table[e][0] = |
138 | 35 | ixheaacd_clamp(ptr_ps_dec->iid_par_table[e][0], |
139 | 35 | ixheaac_negate16(num_iid_levels), num_iid_levels); |
140 | 350 | for (i = 1; i < ixheaacd_num_bands[ptr_ps_dec->iid_mode]; i++) { |
141 | 315 | temp = ixheaac_add16(ptr_ps_dec->iid_par_table[e][i - 1], |
142 | 315 | ptr_ps_dec->iid_par_table[e][i]); |
143 | 315 | ptr_ps_dec->iid_par_table[e][i] = ixheaacd_clamp( |
144 | 315 | temp, ixheaac_negate16(num_iid_levels), num_iid_levels); |
145 | 315 | } |
146 | 35 | } |
147 | 1.48k | } else { |
148 | 1.48k | memset(ptr_ps_dec->iid_par_table[e], 0, |
149 | 1.48k | sizeof(WORD16) * ixheaacd_num_bands[ptr_ps_dec->iid_mode]); |
150 | 1.48k | } |
151 | | |
152 | 1.63k | if (iid_mode == 2) { |
153 | 1.56k | for (i = (ixheaacd_num_bands[ptr_ps_dec->iid_mode] * iid_mode - 1); |
154 | 31.2k | i != 0; i--) { |
155 | 29.6k | ptr_ps_dec->iid_par_table[e][i] = |
156 | 29.6k | ptr_ps_dec->iid_par_table[e][ixheaac_shr32(i, 1)]; |
157 | 29.6k | } |
158 | 1.56k | } |
159 | | |
160 | 1.63k | if (ptr_ps_dec->enable_icc) { |
161 | 85 | if (ptr_ps_dec->icc_dt[e]) { |
162 | 1.67k | for (i = 0; i < ixheaacd_num_bands[ptr_ps_dec->icc_mode]; i++) { |
163 | 1.59k | temp = |
164 | 1.59k | ixheaac_add16(*p_icc_par_prev, ptr_ps_dec->icc_par_table[e][i]); |
165 | 1.59k | ptr_ps_dec->icc_par_table[e][i] = |
166 | 1.59k | ixheaacd_clamp(temp, 0, (WORD16)(NUM_ICC_LEVELS - 1)); |
167 | 1.59k | p_icc_par_prev += icc_mode; |
168 | 1.59k | } |
169 | 80 | } else { |
170 | 5 | ptr_ps_dec->icc_par_table[e][0] = ixheaacd_clamp( |
171 | 5 | ptr_ps_dec->icc_par_table[e][0], 0, (WORD16)(NUM_ICC_LEVELS - 1)); |
172 | 70 | for (i = 1; i < ixheaacd_num_bands[ptr_ps_dec->icc_mode]; i++) { |
173 | 65 | temp = ixheaac_add16(ptr_ps_dec->icc_par_table[e][i - 1], |
174 | 65 | ptr_ps_dec->icc_par_table[e][i]); |
175 | 65 | ptr_ps_dec->icc_par_table[e][i] = |
176 | 65 | ixheaacd_clamp(temp, 0, (WORD16)(NUM_ICC_LEVELS - 1)); |
177 | 65 | } |
178 | 5 | } |
179 | 1.55k | } else { |
180 | 1.55k | memset(ptr_ps_dec->icc_par_table[e], 0, |
181 | 1.55k | sizeof(WORD16) * ixheaacd_num_bands[ptr_ps_dec->icc_mode]); |
182 | 1.55k | } |
183 | | |
184 | 1.63k | if (icc_mode == 2) { |
185 | 1.53k | for (i = (ixheaacd_num_bands[ptr_ps_dec->icc_mode] * icc_mode - 1); |
186 | 30.6k | i != 0; i--) { |
187 | 29.1k | ptr_ps_dec->icc_par_table[e][i] = |
188 | 29.1k | ptr_ps_dec->icc_par_table[e][ixheaac_shr32(i, 1)]; |
189 | 29.1k | } |
190 | 1.53k | } |
191 | 1.63k | } |
192 | | |
193 | 9.07k | if (ptr_ps_dec->num_env == 0) { |
194 | 7.58k | ptr_ps_dec->num_env = 1; |
195 | | |
196 | 7.58k | if (ptr_ps_dec->enable_iid) { |
197 | 2.24k | memcpy(ptr_ps_dec->iid_par_table[0], ptr_ps_dec->iid_par_prev, |
198 | 2.24k | sizeof(WORD16) * NUM_BANDS_FINE); |
199 | 5.34k | } else { |
200 | 5.34k | memset(ptr_ps_dec->iid_par_table[0], 0, sizeof(WORD16) * NUM_BANDS_FINE); |
201 | 5.34k | } |
202 | | |
203 | 7.58k | if (ptr_ps_dec->enable_icc) { |
204 | 1.91k | memcpy(ptr_ps_dec->icc_par_table[0], ptr_ps_dec->icc_par_prev, |
205 | 1.91k | sizeof(WORD16) * NUM_BANDS_FINE); |
206 | 5.67k | } else { |
207 | 5.67k | memset(ptr_ps_dec->icc_par_table[0], 0, sizeof(WORD16) * NUM_BANDS_FINE); |
208 | 5.67k | } |
209 | 7.58k | } |
210 | | |
211 | 9.07k | memcpy(ptr_ps_dec->iid_par_prev, |
212 | 9.07k | ptr_ps_dec->iid_par_table[ptr_ps_dec->num_env - 1], |
213 | 9.07k | sizeof(WORD16) * NUM_BANDS_FINE); |
214 | | |
215 | 9.07k | memcpy(ptr_ps_dec->icc_par_prev, |
216 | 9.07k | ptr_ps_dec->icc_par_table[ptr_ps_dec->num_env - 1], |
217 | 9.07k | sizeof(WORD16) * NUM_BANDS_FINE); |
218 | | |
219 | 9.07k | ptr_ps_dec->ps_data_present = 0; |
220 | | |
221 | 9.07k | if (ptr_ps_dec->frame_class == 0) { |
222 | 8.70k | WORD env_count; |
223 | 8.70k | WORD16 shift = 0; |
224 | | |
225 | 8.70k | switch (ptr_ps_dec->num_env) { |
226 | 8.67k | case 1: |
227 | 8.67k | shift = 0; |
228 | 8.67k | break; |
229 | 29 | case 2: |
230 | 29 | shift = 1; |
231 | 29 | break; |
232 | 7 | case 4: |
233 | 7 | shift = 2; |
234 | 7 | break; |
235 | 8.70k | } |
236 | 8.70k | ptr_ps_dec->border_position[0] = 0; |
237 | 8.70k | env_count = 0; |
238 | | |
239 | 8.75k | for (e = 1; e < ptr_ps_dec->num_env; e++) { |
240 | 50 | env_count = add_d(env_count, max_num_columns); |
241 | 50 | ptr_ps_dec->border_position[e] = (WORD16)(env_count >> shift); |
242 | 50 | } |
243 | 8.70k | ptr_ps_dec->border_position[ptr_ps_dec->num_env] = max_num_columns; |
244 | 8.70k | } else { |
245 | 373 | ptr_ps_dec->border_position[0] = 0; |
246 | | |
247 | 373 | if (ptr_ps_dec->border_position[ptr_ps_dec->num_env] < max_num_columns) { |
248 | 349 | ptr_ps_dec->num_env++; |
249 | 349 | ptr_ps_dec->border_position[ptr_ps_dec->num_env] = max_num_columns; |
250 | | |
251 | 349 | memcpy(ptr_ps_dec->iid_par_table[ptr_ps_dec->num_env - 1], |
252 | 349 | ptr_ps_dec->iid_par_table[ptr_ps_dec->num_env - 2], |
253 | 349 | sizeof(WORD16) * NUM_BANDS_FINE); |
254 | | |
255 | 349 | memcpy(ptr_ps_dec->icc_par_table[ptr_ps_dec->num_env - 1], |
256 | 349 | ptr_ps_dec->icc_par_table[ptr_ps_dec->num_env - 2], |
257 | 349 | sizeof(WORD16) * NUM_BANDS_FINE); |
258 | 349 | } |
259 | | |
260 | 817 | for (e = 1; e < ptr_ps_dec->num_env; e++) { |
261 | 444 | WORD threshold; |
262 | 444 | threshold = sub_d(max_num_columns, sub_d(ptr_ps_dec->num_env, e)); |
263 | | |
264 | 444 | if (ptr_ps_dec->border_position[e] > threshold) { |
265 | 8 | ptr_ps_dec->border_position[e] = threshold; |
266 | 436 | } else { |
267 | 436 | threshold = add_d(ptr_ps_dec->border_position[e - 1], 1); |
268 | | |
269 | 436 | if (ptr_ps_dec->border_position[e] < threshold) { |
270 | 92 | ptr_ps_dec->border_position[e] = threshold; |
271 | 92 | } |
272 | 436 | } |
273 | 444 | } |
274 | 373 | } |
275 | | |
276 | 18.6k | for (e = 0; e < ptr_ps_dec->num_env; e++) { |
277 | 9.57k | if (ptr_ps_dec->iid_mode == 2) |
278 | 1.84k | ixheaacd_map_34_params_to_20(ptr_ps_dec->iid_par_table[e]); |
279 | | |
280 | 9.57k | if (ptr_ps_dec->icc_mode == 2) |
281 | 58 | ixheaacd_map_34_params_to_20(ptr_ps_dec->icc_par_table[e]); |
282 | 9.57k | } |
283 | 9.07k | } |