1 /*
2 * Copyright (C) 2003 - 2016 Sony Corporation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "ldac.h"
18
19 /***************************************************************************************************
20 Allocate Memory
21 ***************************************************************************************************/
alloc_encode_ldac(SFINFO * p_sfinfo)22 static LDAC_RESULT alloc_encode_ldac(
23 SFINFO *p_sfinfo)
24 {
25 LDAC_RESULT result = LDAC_S_OK;
26 CFG *p_cfg = &p_sfinfo->cfg;
27 int ich;
28 int nchs = p_cfg->ch;
29 int nbks = gaa_block_setting_ldac[p_cfg->chconfig_id][1];
30
31 /* Allocate AC */
32 for (ich = 0; ich < nchs; ich++) {
33 p_sfinfo->ap_ac[ich] = (AC *)calloc_ldac(p_sfinfo, 1, sizeof(AC));
34 if (p_sfinfo->ap_ac[ich] != (AC *)NULL) {
35 p_sfinfo->ap_ac[ich]->p_acsub = (ACSUB *)calloc_ldac(p_sfinfo, 1, sizeof(ACSUB));
36 if (p_sfinfo->ap_ac[ich]->p_acsub == (ACSUB *)NULL) {
37 result = LDAC_E_FAIL;
38 break;
39 }
40 }
41 else {
42 result = LDAC_E_FAIL;
43 break;
44 }
45 }
46
47 if (result != LDAC_S_OK) {
48 return result;
49 }
50
51 /* Allocate AB */
52 p_sfinfo->p_ab = (AB *)calloc_ldac(p_sfinfo, nbks, sizeof(AB));
53 if (p_sfinfo->p_ab == (AB *)NULL) {
54 result = LDAC_E_FAIL;
55 }
56
57 return result;
58 }
59
60 /***************************************************************************************************
61 Initialize Memory
62 ***************************************************************************************************/
init_encode_ldac(SFINFO * p_sfinfo)63 DECLFUNC LDAC_RESULT init_encode_ldac(
64 SFINFO *p_sfinfo)
65 {
66 LDAC_RESULT result = LDAC_S_OK;
67 CFG *p_cfg = &p_sfinfo->cfg;
68 AB *p_ab;
69 int ibk, ich;
70 int blk_type, blk_nchs;
71 int ch_offset = 0;
72 int chconfig_id = p_cfg->chconfig_id;
73 int nbks = gaa_block_setting_ldac[chconfig_id][1];
74
75 if (alloc_encode_ldac(p_sfinfo) == LDAC_E_FAIL) {
76 p_sfinfo->error_code = LDAC_ERR_ALLOC_MEMORY;
77 return LDAC_E_FAIL;
78 }
79
80 p_sfinfo->error_code = LDAC_ERR_NONE;
81 p_cfg->frame_status = LDAC_FRMSTAT_LEV_0;
82
83 /* Set AB information */
84 p_ab = p_sfinfo->p_ab;
85 for (ibk = 0; ibk < nbks; ibk++){
86 p_ab->blk_type = blk_type = gaa_block_setting_ldac[chconfig_id][ibk+2];
87 p_ab->blk_nchs = blk_nchs = get_block_nchs_ldac(blk_type);
88 p_ab->p_smplrate_id = &p_cfg->smplrate_id;
89 p_ab->p_error_code = &p_sfinfo->error_code;
90
91 /* Set AC Information */
92 for (ich = 0; ich < blk_nchs; ich++) {
93 p_ab->ap_ac[ich] = p_sfinfo->ap_ac[ch_offset++];
94 p_ab->ap_ac[ich]->p_ab = p_ab;
95 p_ab->ap_ac[ich]->ich = ich;
96 p_ab->ap_ac[ich]->frmana_cnt = 0;
97 }
98
99 p_ab++;
100 }
101
102 calc_initial_bits_ldac(p_sfinfo);
103
104 return result;
105 }
106
107 /***************************************************************************************************
108 Calculate Initial Bits
109 ***************************************************************************************************/
calc_initial_bits_ldac(SFINFO * p_sfinfo)110 DECLFUNC void calc_initial_bits_ldac(
111 SFINFO *p_sfinfo)
112 {
113 CFG *p_cfg = &p_sfinfo->cfg;
114 AB *p_ab = p_sfinfo->p_ab;
115 int ibk;
116 int blk_type;
117 int nbits_ab, nbits_ac;
118 int chconfig_id = p_cfg->chconfig_id;
119 int nbks = gaa_block_setting_ldac[chconfig_id][1];
120
121 nbits_ac = p_cfg->frame_length * LDAC_BYTESIZE / p_cfg->ch;
122
123 for (ibk = 0; ibk < nbks; ibk++){
124 blk_type = gaa_block_setting_ldac[chconfig_id][ibk+2];
125
126 if (blk_type == LDAC_BLKID_STEREO){
127 nbits_ab = (nbits_ac * 2 / LDAC_BYTESIZE) * LDAC_BYTESIZE;
128 }
129 else{
130 nbits_ab = (nbits_ac / LDAC_BYTESIZE) * LDAC_BYTESIZE;
131 }
132 p_ab->nbits_ab = nbits_ab;
133
134 p_ab++;
135 }
136
137 return;
138 }
139
140 /***************************************************************************************************
141 Free Memory
142 ***************************************************************************************************/
free_encode_ldac(SFINFO * p_sfinfo)143 DECLFUNC void free_encode_ldac(
144 SFINFO *p_sfinfo)
145 {
146 int ich;
147 int nchs = p_sfinfo->cfg.ch;
148
149 /* Free AB */
150 if (p_sfinfo->p_ab != (AB *)NULL) {
151 free(p_sfinfo->p_ab);
152 p_sfinfo->p_ab = (AB *)NULL;
153 }
154
155 /* Free AC */
156 for (ich = 0; ich < nchs; ich++) {
157 if (p_sfinfo->ap_ac[ich] != (AC *)NULL) {
158 if (p_sfinfo->ap_ac[ich]->p_acsub != (ACSUB *)NULL) {
159 free(p_sfinfo->ap_ac[ich]->p_acsub);
160 p_sfinfo->ap_ac[ich]->p_acsub = (ACSUB *)NULL;
161 }
162 free(p_sfinfo->ap_ac[ich]);
163 p_sfinfo->ap_ac[ich] = (AC *)NULL;
164 }
165 }
166
167 return;
168 }
169
170 /***************************************************************************************************
171 Encode Audio Block
172 ***************************************************************************************************/
encode_audio_block_ldac(AB * p_ab)173 static int encode_audio_block_ldac(
174 AB *p_ab)
175 {
176 AC *p_ac;
177 int ich;
178 int nchs = p_ab->blk_nchs;
179
180 for (ich = 0; ich < nchs; ich++) {
181 p_ac = p_ab->ap_ac[ich];
182
183 norm_spectrum_ldac(p_ac);
184 }
185
186 if (!alloc_bits_ldac(p_ab)) {
187 return LDAC_FALSE;
188 }
189
190 for (ich = 0; ich < nchs; ich++) {
191 p_ac = p_ab->ap_ac[ich];
192
193 quant_spectrum_ldac(p_ac);
194
195 quant_residual_ldac(p_ac);
196 }
197
198 return LDAC_TRUE;
199 }
200
201 /***************************************************************************************************
202 Encode
203 ***************************************************************************************************/
encode_ldac(SFINFO * p_sfinfo,int nbands,int grad_mode,int grad_qu_l,int grad_qu_h,int grad_os_l,int grad_os_h,int abc_status)204 DECLFUNC int encode_ldac(
205 SFINFO *p_sfinfo,
206 int nbands,
207 int grad_mode,
208 int grad_qu_l,
209 int grad_qu_h,
210 int grad_os_l,
211 int grad_os_h,
212 int abc_status)
213 {
214 AB *p_ab = p_sfinfo->p_ab;
215 int ibk;
216 int nbks = gaa_block_setting_ldac[p_sfinfo->cfg.chconfig_id][1];
217
218 for (ibk = 0; ibk < nbks; ibk++){
219 p_ab->nbands = nbands;
220 p_ab->nqus = ga_nqus_ldac[nbands];
221 p_ab->grad_mode = grad_mode;
222 p_ab->grad_qu_l = grad_qu_l;
223 p_ab->grad_qu_h = grad_qu_h;
224 p_ab->grad_os_l = grad_os_l;
225 p_ab->grad_os_h = grad_os_h;
226 p_ab->abc_status = abc_status;
227
228 if (!encode_audio_block_ldac(p_ab)) {
229 return LDAC_ERR_NON_FATAL_ENCODE;
230 }
231
232 p_ab++;
233 }
234
235 return LDAC_ERR_NONE;
236 }
237
238