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 "ixheaacd_sbr_common.h"
21 #include "ixheaacd_type_def.h"
22
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
29 #include "ixheaacd_defines.h"
30 #include "ixheaacd_aac_rom.h"
31 #include "ixheaacd_bitbuffer.h"
32 #include "ixheaacd_common_rom.h"
33 #include "ixheaacd_basic_funcs.h"
34
35 #include "ixheaacd_basic_op.h"
36 #include "ixheaacd_intrinsics.h"
37
38 #include "ixheaacd_pulsedata.h"
39
40 #include "ixheaacd_pns.h"
41 #include "ixheaacd_drc_data_struct.h"
42
43 #include "ixheaacd_lt_predict.h"
44 #include "ixheaacd_channelinfo.h"
45 #include "ixheaacd_channel.h"
46 #include "ixheaacd_drc_dec.h"
47 #include "ixheaacd_audioobjtypes.h"
48
49 #include "ixheaacd_stereo.h"
50
ixheaacd_ms_stereo_process(ia_aac_dec_channel_info_struct * ptr_aac_dec_channel_info[2],ia_aac_dec_tables_struct * ptr_aac_tables)51 VOID ixheaacd_ms_stereo_process(
52 ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info[2],
53 ia_aac_dec_tables_struct *ptr_aac_tables)
54
55 {
56 WORD32 win_grp, grp_len, k;
57 WORD32 *l_spec = ptr_aac_dec_channel_info[LEFT]->ptr_spec_coeff;
58 WORD32 *r_spec = ptr_aac_dec_channel_info[RIGHT]->ptr_spec_coeff;
59 WORD8 *ptr_group_len =
60 ptr_aac_dec_channel_info[LEFT]->str_ics_info.window_group_length;
61 const WORD8 *ptr_sfb_width =
62 ptr_aac_tables
63 ->str_aac_sfb_info[ptr_aac_dec_channel_info[RIGHT]
64 ->str_ics_info.window_sequence]
65 .sfb_width;
66
67 UWORD8 *ptr_ms_used =
68 &ptr_aac_dec_channel_info[LEFT]->pstr_stereo_info->ms_used[0][0];
69
70 for (win_grp = 0;
71 win_grp < ptr_aac_dec_channel_info[LEFT]->str_ics_info.num_window_groups;
72 win_grp++) {
73 for (grp_len = 0; grp_len < ptr_group_len[win_grp]; grp_len++) {
74 WORD32 sfb;
75 WORD32 ixheaacd_drc_offset = 0;
76
77 for (sfb = 0; sfb < ptr_aac_dec_channel_info[LEFT]->str_ics_info.max_sfb;
78 sfb++) {
79 ixheaacd_drc_offset += ptr_sfb_width[sfb];
80
81 if (*ptr_ms_used++) {
82 for (k = 0; k < ptr_sfb_width[sfb]; k = k + 2) {
83 WORD32 left_coef = *l_spec;
84 WORD32 right_coef = *r_spec;
85 WORD32 left_coef2 = *(l_spec + 1);
86 WORD32 right_coef2 = *(r_spec + 1);
87
88 *l_spec++ = ixheaacd_add32_sat(left_coef, right_coef);
89 *r_spec++ = ixheaacd_sub32_sat(left_coef, right_coef);
90 *l_spec++ = ixheaacd_add32_sat(left_coef2, right_coef2);
91 *r_spec++ = ixheaacd_sub32_sat(left_coef2, right_coef2);
92 }
93 } else {
94 l_spec += ptr_sfb_width[sfb];
95 r_spec += ptr_sfb_width[sfb];
96 }
97 }
98 ptr_ms_used -= ptr_aac_dec_channel_info[LEFT]->str_ics_info.max_sfb;
99 l_spec = l_spec + 128 - ixheaacd_drc_offset;
100 r_spec = r_spec + 128 - ixheaacd_drc_offset;
101 }
102
103 ptr_ms_used += JOINT_STEREO_MAX_BANDS;
104 }
105 }
106
ixheaacd_mult32x16in32l(WORD32 a,WORD32 b)107 static PLATFORM_INLINE WORD32 ixheaacd_mult32x16in32l(WORD32 a, WORD32 b) {
108 WORD32 result;
109 WORD64 temp_result;
110
111 temp_result = (WORD64)a * (WORD64)b;
112
113 result = (WORD32)(temp_result >> 16);
114
115 return (result);
116 }
117
ixheaacd_intensity_stereo_process(ia_aac_dec_channel_info_struct * ptr_aac_dec_channel_info[2],ia_aac_dec_tables_struct * ptr_aac_tables,WORD32 object_type,WORD32 aac_sf_data_resil_flag)118 VOID ixheaacd_intensity_stereo_process(
119 ia_aac_dec_channel_info_struct *ptr_aac_dec_channel_info[2],
120 ia_aac_dec_tables_struct *ptr_aac_tables, WORD32 object_type,
121 WORD32 aac_sf_data_resil_flag) {
122 UWORD8 *ptr_ms_used =
123 &ptr_aac_dec_channel_info[LEFT]->pstr_stereo_info->ms_used[0][0];
124 WORD8 *ptr_code_book = &ptr_aac_dec_channel_info[RIGHT]->ptr_code_book[0];
125 WORD16 *ptr_scale_factor =
126 &ptr_aac_dec_channel_info[RIGHT]->ptr_scale_factor[0];
127 WORD32 *r_spec = &ptr_aac_dec_channel_info[RIGHT]->ptr_spec_coeff[0];
128 WORD32 *l_spec = &ptr_aac_dec_channel_info[LEFT]->ptr_spec_coeff[0];
129 WORD8 *ptr_group_len =
130 ptr_aac_dec_channel_info[RIGHT]->str_ics_info.window_group_length;
131 const WORD8 *ptr_sfb_width =
132 ptr_aac_tables
133 ->str_aac_sfb_info[ptr_aac_dec_channel_info[RIGHT]
134 ->str_ics_info.window_sequence]
135 .sfb_width;
136 WORD32 *ptr_scale_table = ptr_aac_tables->pstr_block_tables->scale_table;
137 WORD32 win_grp, grp_len, k;
138
139 for (win_grp = 0;
140 win_grp <
141 ptr_aac_dec_channel_info[RIGHT]->str_ics_info.num_window_groups;
142 win_grp++) {
143 for (grp_len = 0; grp_len < ptr_group_len[win_grp]; grp_len++) {
144 WORD32 sfb;
145 WORD32 ixheaacd_drc_offset = 0;
146
147 for (sfb = 0; sfb < ptr_aac_dec_channel_info[RIGHT]->str_ics_info.max_sfb;
148 sfb++) {
149 WORD8 code_book = ptr_code_book[sfb];
150 ixheaacd_drc_offset += ptr_sfb_width[sfb];
151
152 if (((code_book >= INTENSITY_HCB2) &&
153 ((object_type != AOT_ER_AAC_ELD) &&
154 (object_type != AOT_ER_AAC_LD))) ||
155 (((code_book == INTENSITY_HCB2) || (code_book == INTENSITY_HCB)) &&
156 ((object_type == AOT_ER_AAC_ELD) ||
157 (object_type == AOT_ER_AAC_LD))))
158
159 {
160 WORD32 sfb_factor, scale;
161 WORD32 scf_exp;
162
163 sfb_factor = (ptr_scale_factor[sfb]);
164 if (aac_sf_data_resil_flag) sfb_factor = -sfb_factor;
165
166 scf_exp = (sfb_factor >> 2);
167 scale = *(ptr_scale_table + (sfb_factor & 3));
168 if (!((ptr_ms_used[sfb]) ^ (code_book & 0x1))) {
169 scale = ixheaacd_negate32(scale);
170 }
171
172 scf_exp = -(scf_exp + 2);
173
174 for (k = 0; k < ptr_sfb_width[sfb]; k++) {
175 WORD32 temp, shift_val;
176 temp = *l_spec++;
177
178 shift_val = ixheaacd_norm32(temp);
179 temp = ixheaacd_shl32(temp, shift_val);
180
181 temp = ixheaacd_mult32x16in32l(temp, scale);
182 shift_val = shift_val + scf_exp;
183
184 if (shift_val < 0) {
185 temp = ixheaacd_shl32_sat(temp, -shift_val);
186 } else {
187 temp = ixheaacd_shr32(temp, shift_val);
188 }
189 *r_spec++ = temp;
190 }
191
192 } else {
193 l_spec += ptr_sfb_width[sfb];
194 r_spec += ptr_sfb_width[sfb];
195 }
196 }
197 l_spec += 128 - ixheaacd_drc_offset;
198 r_spec += 128 - ixheaacd_drc_offset;
199 }
200 ptr_ms_used += 64;
201 ptr_code_book += 16;
202 ptr_scale_factor += 16;
203 }
204 }
205