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#include "webrtc/modules/audio_coding/main/acm2/acm_g7221c.h" 12 13#ifdef WEBRTC_CODEC_G722_1C 14// NOTE! G.722.1C is not included in the open-source package. The following 15// interface file is needed: 16#include "webrtc/modules/audio_coding/main/codecs/g7221c/interface/g7221c_interface.h" 17#include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h" 18#include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h" 19#include "webrtc/system_wrappers/interface/trace.h" 20 21// The API in the header file should match the one below. 22// 23// int16_t WebRtcG7221C_CreateEnc24(G722_1C_24_encinst_t_** enc_inst); 24// int16_t WebRtcG7221C_CreateEnc32(G722_1C_32_encinst_t_** enc_inst); 25// int16_t WebRtcG7221C_CreateEnc48(G722_1C_48_encinst_t_** enc_inst); 26// int16_t WebRtcG7221C_CreateDec24(G722_1C_24_decinst_t_** dec_inst); 27// int16_t WebRtcG7221C_CreateDec32(G722_1C_32_decinst_t_** dec_inst); 28// int16_t WebRtcG7221C_CreateDec48(G722_1C_48_decinst_t_** dec_inst); 29// 30// int16_t WebRtcG7221C_FreeEnc24(G722_1C_24_encinst_t_** enc_inst); 31// int16_t WebRtcG7221C_FreeEnc32(G722_1C_32_encinst_t_** enc_inst); 32// int16_t WebRtcG7221C_FreeEnc48(G722_1C_48_encinst_t_** enc_inst); 33// int16_t WebRtcG7221C_FreeDec24(G722_1C_24_decinst_t_** dec_inst); 34// int16_t WebRtcG7221C_FreeDec32(G722_1C_32_decinst_t_** dec_inst); 35// int16_t WebRtcG7221C_FreeDec48(G722_1C_48_decinst_t_** dec_inst); 36// 37// int16_t WebRtcG7221C_EncoderInit24(G722_1C_24_encinst_t_* enc_inst); 38// int16_t WebRtcG7221C_EncoderInit32(G722_1C_32_encinst_t_* enc_inst); 39// int16_t WebRtcG7221C_EncoderInit48(G722_1C_48_encinst_t_* enc_inst); 40// int16_t WebRtcG7221C_DecoderInit24(G722_1C_24_decinst_t_* dec_inst); 41// int16_t WebRtcG7221C_DecoderInit32(G722_1C_32_decinst_t_* dec_inst); 42// int16_t WebRtcG7221C_DecoderInit48(G722_1C_48_decinst_t_* dec_inst); 43// 44// int16_t WebRtcG7221C_Encode24(G722_1C_24_encinst_t_* enc_inst, 45// int16_t* input, 46// int16_t len, 47// int16_t* output); 48// int16_t WebRtcG7221C_Encode32(G722_1C_32_encinst_t_* enc_inst, 49// int16_t* input, 50// int16_t len, 51// int16_t* output); 52// int16_t WebRtcG7221C_Encode48(G722_1C_48_encinst_t_* enc_inst, 53// int16_t* input, 54// int16_t len, 55// int16_t* output); 56// 57// int16_t WebRtcG7221C_Decode24(G722_1C_24_decinst_t_* dec_inst, 58// int16_t* bitstream, 59// int16_t len, 60// int16_t* output); 61// int16_t WebRtcG7221C_Decode32(G722_1C_32_decinst_t_* dec_inst, 62// int16_t* bitstream, 63// int16_t len, 64// int16_t* output); 65// int16_t WebRtcG7221C_Decode48(G722_1C_48_decinst_t_* dec_inst, 66// int16_t* bitstream, 67// int16_t len, 68// int16_t* output); 69// 70// int16_t WebRtcG7221C_DecodePlc24(G722_1C_24_decinst_t_* dec_inst, 71// int16_t* output, 72// int16_t nr_lost_frames); 73// int16_t WebRtcG7221C_DecodePlc32(G722_1C_32_decinst_t_* dec_inst, 74// int16_t* output, 75// int16_t nr_lost_frames); 76// int16_t WebRtcG7221C_DecodePlc48(G722_1C_48_decinst_t_* dec_inst, 77// int16_t* output, 78// int16_t nr_lost_frames); 79#endif 80 81namespace webrtc { 82 83namespace acm2 { 84 85#ifndef WEBRTC_CODEC_G722_1C 86 87ACMG722_1C::ACMG722_1C(int16_t /* codec_id */) 88 : operational_rate_(-1), 89 encoder_inst_ptr_(NULL), 90 encoder_inst_ptr_right_(NULL), 91 encoder_inst24_ptr_(NULL), 92 encoder_inst24_ptr_right_(NULL), 93 encoder_inst32_ptr_(NULL), 94 encoder_inst32_ptr_right_(NULL), 95 encoder_inst48_ptr_(NULL), 96 encoder_inst48_ptr_right_(NULL) { 97 return; 98} 99 100ACMG722_1C::~ACMG722_1C() { return; } 101 102int16_t ACMG722_1C::InternalEncode(uint8_t* /* bitstream */, 103 int16_t* /* bitstream_len_byte */) { 104 return -1; 105} 106 107int16_t ACMG722_1C::InternalInitEncoder( 108 WebRtcACMCodecParams* /* codec_params */) { 109 return -1; 110} 111 112ACMGenericCodec* ACMG722_1C::CreateInstance(void) { return NULL; } 113 114int16_t ACMG722_1C::InternalCreateEncoder() { return -1; } 115 116void ACMG722_1C::DestructEncoderSafe() { return; } 117 118#else //===================== Actual Implementation ======================= 119ACMG722_1C::ACMG722_1C(int16_t codec_id) 120 : encoder_inst_ptr_(NULL), 121 encoder_inst_ptr_right_(NULL), 122 encoder_inst24_ptr_(NULL), 123 encoder_inst24_ptr_right_(NULL), 124 encoder_inst32_ptr_(NULL), 125 encoder_inst32_ptr_right_(NULL), 126 encoder_inst48_ptr_(NULL), 127 encoder_inst48_ptr_right_(NULL) { 128 codec_id_ = codec_id; 129 if (codec_id_ == ACMCodecDB::kG722_1C_24) { 130 operational_rate_ = 24000; 131 } else if (codec_id_ == ACMCodecDB::kG722_1C_32) { 132 operational_rate_ = 32000; 133 } else if (codec_id_ == ACMCodecDB::kG722_1C_48) { 134 operational_rate_ = 48000; 135 } else { 136 WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, 137 "Wrong codec id for G722_1c."); 138 operational_rate_ = -1; 139 } 140 return; 141} 142 143ACMG722_1C::~ACMG722_1C() { 144 if (encoder_inst_ptr_ != NULL) { 145 delete encoder_inst_ptr_; 146 encoder_inst_ptr_ = NULL; 147 } 148 if (encoder_inst_ptr_right_ != NULL) { 149 delete encoder_inst_ptr_right_; 150 encoder_inst_ptr_right_ = NULL; 151 } 152 153 switch (operational_rate_) { 154 case 24000: { 155 encoder_inst24_ptr_ = NULL; 156 encoder_inst24_ptr_right_ = NULL; 157 break; 158 } 159 case 32000: { 160 encoder_inst32_ptr_ = NULL; 161 encoder_inst32_ptr_right_ = NULL; 162 break; 163 } 164 case 48000: { 165 encoder_inst48_ptr_ = NULL; 166 encoder_inst48_ptr_right_ = NULL; 167 break; 168 } 169 default: { 170 WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, 171 "Wrong rate for G722_1c."); 172 break; 173 } 174 } 175 return; 176} 177 178int16_t ACMG722_1C::InternalEncode(uint8_t* bitstream, 179 int16_t* bitstream_len_byte) { 180 int16_t left_channel[640]; 181 int16_t right_channel[640]; 182 int16_t len_in_bytes; 183 int16_t out_bits[240]; 184 185 // If stereo, split input signal in left and right channel before encoding 186 if (num_channels_ == 2) { 187 for (int i = 0, j = 0; i < frame_len_smpl_ * 2; i += 2, j++) { 188 left_channel[j] = in_audio_[in_audio_ix_read_ + i]; 189 right_channel[j] = in_audio_[in_audio_ix_read_ + i + 1]; 190 } 191 } else { 192 memcpy(left_channel, &in_audio_[in_audio_ix_read_], 640); 193 } 194 195 switch (operational_rate_) { 196 case 24000: { 197 len_in_bytes = WebRtcG7221C_Encode24(encoder_inst24_ptr_, left_channel, 198 640, &out_bits[0]); 199 if (num_channels_ == 2) { 200 len_in_bytes += WebRtcG7221C_Encode24(encoder_inst24_ptr_right_, 201 right_channel, 640, 202 &out_bits[len_in_bytes / 2]); 203 } 204 break; 205 } 206 case 32000: { 207 len_in_bytes = WebRtcG7221C_Encode32(encoder_inst32_ptr_, left_channel, 208 640, &out_bits[0]); 209 if (num_channels_ == 2) { 210 len_in_bytes += WebRtcG7221C_Encode32(encoder_inst32_ptr_right_, 211 right_channel, 640, 212 &out_bits[len_in_bytes / 2]); 213 } 214 break; 215 } 216 case 48000: { 217 len_in_bytes = WebRtcG7221C_Encode48(encoder_inst48_ptr_, left_channel, 218 640, &out_bits[0]); 219 if (num_channels_ == 2) { 220 len_in_bytes += WebRtcG7221C_Encode48(encoder_inst48_ptr_right_, 221 right_channel, 640, 222 &out_bits[len_in_bytes / 2]); 223 } 224 break; 225 } 226 default: { 227 WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, 228 "InternalEncode: Wrong rate for G722_1c."); 229 return -1; 230 } 231 } 232 233 memcpy(bitstream, out_bits, len_in_bytes); 234 *bitstream_len_byte = len_in_bytes; 235 236 // increment the read index this tell the caller that how far 237 // we have gone forward in reading the audio buffer 238 in_audio_ix_read_ += 640 * num_channels_; 239 240 return *bitstream_len_byte; 241} 242 243int16_t ACMG722_1C::InternalInitEncoder(WebRtcACMCodecParams* codec_params) { 244 int16_t ret; 245 246 switch (operational_rate_) { 247 case 24000: { 248 ret = WebRtcG7221C_EncoderInit24(encoder_inst24_ptr_right_); 249 if (ret < 0) { 250 return ret; 251 } 252 return WebRtcG7221C_EncoderInit24(encoder_inst24_ptr_); 253 } 254 case 32000: { 255 ret = WebRtcG7221C_EncoderInit32(encoder_inst32_ptr_right_); 256 if (ret < 0) { 257 return ret; 258 } 259 return WebRtcG7221C_EncoderInit32(encoder_inst32_ptr_); 260 } 261 case 48000: { 262 ret = WebRtcG7221C_EncoderInit48(encoder_inst48_ptr_right_); 263 if (ret < 0) { 264 return ret; 265 } 266 return WebRtcG7221C_EncoderInit48(encoder_inst48_ptr_); 267 } 268 default: { 269 WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, 270 "InternalInitEncode: Wrong rate for G722_1c."); 271 return -1; 272 } 273 } 274} 275 276ACMGenericCodec* ACMG722_1C::CreateInstance(void) { return NULL; } 277 278int16_t ACMG722_1C::InternalCreateEncoder() { 279 if ((encoder_inst_ptr_ == NULL) || (encoder_inst_ptr_right_ == NULL)) { 280 return -1; 281 } 282 switch (operational_rate_) { 283 case 24000: { 284 WebRtcG7221C_CreateEnc24(&encoder_inst24_ptr_); 285 WebRtcG7221C_CreateEnc24(&encoder_inst24_ptr_right_); 286 break; 287 } 288 case 32000: { 289 WebRtcG7221C_CreateEnc32(&encoder_inst32_ptr_); 290 WebRtcG7221C_CreateEnc32(&encoder_inst32_ptr_right_); 291 break; 292 } 293 case 48000: { 294 WebRtcG7221C_CreateEnc48(&encoder_inst48_ptr_); 295 WebRtcG7221C_CreateEnc48(&encoder_inst48_ptr_right_); 296 break; 297 } 298 default: { 299 WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, 300 "InternalCreateEncoder: Wrong rate for G722_1c."); 301 return -1; 302 } 303 } 304 return 0; 305} 306 307void ACMG722_1C::DestructEncoderSafe() { 308 encoder_exist_ = false; 309 encoder_initialized_ = false; 310 if (encoder_inst_ptr_ != NULL) { 311 delete encoder_inst_ptr_; 312 encoder_inst_ptr_ = NULL; 313 } 314 if (encoder_inst_ptr_right_ != NULL) { 315 delete encoder_inst_ptr_right_; 316 encoder_inst_ptr_right_ = NULL; 317 } 318 encoder_inst24_ptr_ = NULL; 319 encoder_inst32_ptr_ = NULL; 320 encoder_inst48_ptr_ = NULL; 321} 322 323#endif 324 325} // namespace acm2 326 327} // namespace webrtc 328