Chisato Kenmochi | 9470443 | 2017-01-10 11:56:48 +0900 | [diff] [blame] | 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 | ***************************************************************************************************/ |
| 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 | ***************************************************************************************************/ |
| 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 | ***************************************************************************************************/ |
| 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 | ***************************************************************************************************/ |
| 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 | ***************************************************************************************************/ |
| 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 | ***************************************************************************************************/ |
| 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 | |