1 /* 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /****************************************************************** 12 13 iLBC Speech Coder ANSI-C Source Code 14 15 iLBCInterface.c 16 17 ******************************************************************/ 18 19 #include "ilbc.h" 20 #include "defines.h" 21 #include "init_encode.h" 22 #include "encode.h" 23 #include "init_decode.h" 24 #include "decode.h" 25 #include <stdlib.h> 26 27 28 int16_t WebRtcIlbcfix_EncoderAssign(iLBC_encinst_t **iLBC_encinst, int16_t *ILBCENC_inst_Addr, int16_t *size) { 29 *iLBC_encinst=(iLBC_encinst_t*)ILBCENC_inst_Addr; 30 *size=sizeof(iLBC_Enc_Inst_t)/sizeof(int16_t); 31 if (*iLBC_encinst!=NULL) { 32 return(0); 33 } else { 34 return(-1); 35 } 36 } 37 38 int16_t WebRtcIlbcfix_DecoderAssign(iLBC_decinst_t **iLBC_decinst, int16_t *ILBCDEC_inst_Addr, int16_t *size) { 39 *iLBC_decinst=(iLBC_decinst_t*)ILBCDEC_inst_Addr; 40 *size=sizeof(iLBC_Dec_Inst_t)/sizeof(int16_t); 41 if (*iLBC_decinst!=NULL) { 42 return(0); 43 } else { 44 return(-1); 45 } 46 } 47 48 int16_t WebRtcIlbcfix_EncoderCreate(iLBC_encinst_t **iLBC_encinst) { 49 *iLBC_encinst=(iLBC_encinst_t*)malloc(sizeof(iLBC_Enc_Inst_t)); 50 if (*iLBC_encinst!=NULL) { 51 WebRtcSpl_Init(); 52 return(0); 53 } else { 54 return(-1); 55 } 56 } 57 58 int16_t WebRtcIlbcfix_DecoderCreate(iLBC_decinst_t **iLBC_decinst) { 59 *iLBC_decinst=(iLBC_decinst_t*)malloc(sizeof(iLBC_Dec_Inst_t)); 60 if (*iLBC_decinst!=NULL) { 61 WebRtcSpl_Init(); 62 return(0); 63 } else { 64 return(-1); 65 } 66 } 67 68 int16_t WebRtcIlbcfix_EncoderFree(iLBC_encinst_t *iLBC_encinst) { 69 free(iLBC_encinst); 70 return(0); 71 } 72 73 int16_t WebRtcIlbcfix_DecoderFree(iLBC_decinst_t *iLBC_decinst) { 74 free(iLBC_decinst); 75 return(0); 76 } 77 78 79 int16_t WebRtcIlbcfix_EncoderInit(iLBC_encinst_t *iLBCenc_inst, int16_t mode) 80 { 81 if ((mode==20)||(mode==30)) { 82 WebRtcIlbcfix_InitEncode((iLBC_Enc_Inst_t*) iLBCenc_inst, mode); 83 return(0); 84 } else { 85 return(-1); 86 } 87 } 88 89 int16_t WebRtcIlbcfix_Encode(iLBC_encinst_t *iLBCenc_inst, const int16_t *speechIn, int16_t len, int16_t *encoded) { 90 91 int16_t pos = 0; 92 int16_t encpos = 0; 93 94 if ((len != ((iLBC_Enc_Inst_t*)iLBCenc_inst)->blockl) && 95 #ifdef SPLIT_10MS 96 (len != 80) && 97 #endif 98 (len != 2*((iLBC_Enc_Inst_t*)iLBCenc_inst)->blockl) && 99 (len != 3*((iLBC_Enc_Inst_t*)iLBCenc_inst)->blockl)) 100 { 101 /* A maximum of 3 frames/packet is allowed */ 102 return(-1); 103 } else { 104 105 /* call encoder */ 106 while (pos<len) { 107 WebRtcIlbcfix_EncodeImpl((uint16_t*) &encoded[encpos], &speechIn[pos], (iLBC_Enc_Inst_t*) iLBCenc_inst); 108 #ifdef SPLIT_10MS 109 pos += 80; 110 if(((iLBC_Enc_Inst_t*)iLBCenc_inst)->section == 0) 111 #else 112 pos += ((iLBC_Enc_Inst_t*)iLBCenc_inst)->blockl; 113 #endif 114 encpos += ((iLBC_Enc_Inst_t*)iLBCenc_inst)->no_of_words; 115 } 116 return (encpos*2); 117 } 118 } 119 120 int16_t WebRtcIlbcfix_DecoderInit(iLBC_decinst_t *iLBCdec_inst, int16_t mode) { 121 if ((mode==20)||(mode==30)) { 122 WebRtcIlbcfix_InitDecode((iLBC_Dec_Inst_t*) iLBCdec_inst, mode, 1); 123 return(0); 124 } else { 125 return(-1); 126 } 127 } 128 int16_t WebRtcIlbcfix_DecoderInit20Ms(iLBC_decinst_t *iLBCdec_inst) { 129 WebRtcIlbcfix_InitDecode((iLBC_Dec_Inst_t*) iLBCdec_inst, 20, 1); 130 return(0); 131 } 132 int16_t WebRtcIlbcfix_Decoderinit30Ms(iLBC_decinst_t *iLBCdec_inst) { 133 WebRtcIlbcfix_InitDecode((iLBC_Dec_Inst_t*) iLBCdec_inst, 30, 1); 134 return(0); 135 } 136 137 138 int16_t WebRtcIlbcfix_Decode(iLBC_decinst_t *iLBCdec_inst, 139 const int16_t *encoded, 140 int16_t len, 141 int16_t *decoded, 142 int16_t *speechType) 143 { 144 int i=0; 145 /* Allow for automatic switching between the frame sizes 146 (although you do get some discontinuity) */ 147 if ((len==((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)|| 148 (len==2*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)|| 149 (len==3*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)) { 150 /* ok, do nothing */ 151 } else { 152 /* Test if the mode has changed */ 153 if (((iLBC_Dec_Inst_t*)iLBCdec_inst)->mode==20) { 154 if ((len==NO_OF_BYTES_30MS)|| 155 (len==2*NO_OF_BYTES_30MS)|| 156 (len==3*NO_OF_BYTES_30MS)) { 157 WebRtcIlbcfix_InitDecode(((iLBC_Dec_Inst_t*)iLBCdec_inst), 30, ((iLBC_Dec_Inst_t*)iLBCdec_inst)->use_enhancer); 158 } else { 159 /* Unsupported frame length */ 160 return(-1); 161 } 162 } else { 163 if ((len==NO_OF_BYTES_20MS)|| 164 (len==2*NO_OF_BYTES_20MS)|| 165 (len==3*NO_OF_BYTES_20MS)) { 166 WebRtcIlbcfix_InitDecode(((iLBC_Dec_Inst_t*)iLBCdec_inst), 20, ((iLBC_Dec_Inst_t*)iLBCdec_inst)->use_enhancer); 167 } else { 168 /* Unsupported frame length */ 169 return(-1); 170 } 171 } 172 } 173 174 while ((i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)<len) { 175 WebRtcIlbcfix_DecodeImpl(&decoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl], (const uint16_t*) &encoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_words], (iLBC_Dec_Inst_t*) iLBCdec_inst, 1); 176 i++; 177 } 178 /* iLBC does not support VAD/CNG yet */ 179 *speechType=1; 180 return(i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl); 181 } 182 183 int16_t WebRtcIlbcfix_Decode20Ms(iLBC_decinst_t *iLBCdec_inst, 184 const int16_t *encoded, 185 int16_t len, 186 int16_t *decoded, 187 int16_t *speechType) 188 { 189 int i=0; 190 if ((len==((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)|| 191 (len==2*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)|| 192 (len==3*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)) { 193 /* ok, do nothing */ 194 } else { 195 return(-1); 196 } 197 198 while ((i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)<len) { 199 WebRtcIlbcfix_DecodeImpl(&decoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl], (const uint16_t*) &encoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_words], (iLBC_Dec_Inst_t*) iLBCdec_inst, 1); 200 i++; 201 } 202 /* iLBC does not support VAD/CNG yet */ 203 *speechType=1; 204 return(i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl); 205 } 206 207 int16_t WebRtcIlbcfix_Decode30Ms(iLBC_decinst_t *iLBCdec_inst, 208 const int16_t *encoded, 209 int16_t len, 210 int16_t *decoded, 211 int16_t *speechType) 212 { 213 int i=0; 214 if ((len==((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)|| 215 (len==2*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)|| 216 (len==3*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)) { 217 /* ok, do nothing */ 218 } else { 219 return(-1); 220 } 221 222 while ((i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_bytes)<len) { 223 WebRtcIlbcfix_DecodeImpl(&decoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl], (const uint16_t*) &encoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->no_of_words], (iLBC_Dec_Inst_t*) iLBCdec_inst, 1); 224 i++; 225 } 226 /* iLBC does not support VAD/CNG yet */ 227 *speechType=1; 228 return(i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl); 229 } 230 231 int16_t WebRtcIlbcfix_DecodePlc(iLBC_decinst_t *iLBCdec_inst, int16_t *decoded, int16_t noOfLostFrames) { 232 int i; 233 uint16_t dummy; 234 235 for (i=0;i<noOfLostFrames;i++) { 236 /* call decoder */ 237 WebRtcIlbcfix_DecodeImpl(&decoded[i*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl], &dummy, (iLBC_Dec_Inst_t*) iLBCdec_inst, 0); 238 } 239 return (noOfLostFrames*((iLBC_Dec_Inst_t*)iLBCdec_inst)->blockl); 240 } 241 242 int16_t WebRtcIlbcfix_NetEqPlc(iLBC_decinst_t *iLBCdec_inst, int16_t *decoded, int16_t noOfLostFrames) { 243 244 /* Two input parameters not used, but needed for function pointers in NetEQ */ 245 (void)(decoded = NULL); 246 (void)(noOfLostFrames = 0); 247 248 WebRtcSpl_MemSetW16(((iLBC_Dec_Inst_t*)iLBCdec_inst)->enh_buf, 0, ENH_BUFL); 249 ((iLBC_Dec_Inst_t*)iLBCdec_inst)->prev_enh_pl = 2; 250 251 return (0); 252 } 253 254 void WebRtcIlbcfix_version(char *version) 255 { 256 strcpy((char*)version, "1.1.1"); 257 } 258
