| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "webrtc/modules/audio_coding/main/acm2/acm_g7221c.h" |
| |
| #ifdef WEBRTC_CODEC_G722_1C |
| // NOTE! G.722.1C is not included in the open-source package. The following |
| // interface file is needed: |
| #include "webrtc/modules/audio_coding/main/codecs/g7221c/interface/g7221c_interface.h" |
| #include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h" |
| #include "webrtc/modules/audio_coding/main/acm2/acm_common_defs.h" |
| #include "webrtc/system_wrappers/interface/trace.h" |
| |
| // The API in the header file should match the one below. |
| // |
| // int16_t WebRtcG7221C_CreateEnc24(G722_1C_24_encinst_t_** enc_inst); |
| // int16_t WebRtcG7221C_CreateEnc32(G722_1C_32_encinst_t_** enc_inst); |
| // int16_t WebRtcG7221C_CreateEnc48(G722_1C_48_encinst_t_** enc_inst); |
| // int16_t WebRtcG7221C_CreateDec24(G722_1C_24_decinst_t_** dec_inst); |
| // int16_t WebRtcG7221C_CreateDec32(G722_1C_32_decinst_t_** dec_inst); |
| // int16_t WebRtcG7221C_CreateDec48(G722_1C_48_decinst_t_** dec_inst); |
| // |
| // int16_t WebRtcG7221C_FreeEnc24(G722_1C_24_encinst_t_** enc_inst); |
| // int16_t WebRtcG7221C_FreeEnc32(G722_1C_32_encinst_t_** enc_inst); |
| // int16_t WebRtcG7221C_FreeEnc48(G722_1C_48_encinst_t_** enc_inst); |
| // int16_t WebRtcG7221C_FreeDec24(G722_1C_24_decinst_t_** dec_inst); |
| // int16_t WebRtcG7221C_FreeDec32(G722_1C_32_decinst_t_** dec_inst); |
| // int16_t WebRtcG7221C_FreeDec48(G722_1C_48_decinst_t_** dec_inst); |
| // |
| // int16_t WebRtcG7221C_EncoderInit24(G722_1C_24_encinst_t_* enc_inst); |
| // int16_t WebRtcG7221C_EncoderInit32(G722_1C_32_encinst_t_* enc_inst); |
| // int16_t WebRtcG7221C_EncoderInit48(G722_1C_48_encinst_t_* enc_inst); |
| // int16_t WebRtcG7221C_DecoderInit24(G722_1C_24_decinst_t_* dec_inst); |
| // int16_t WebRtcG7221C_DecoderInit32(G722_1C_32_decinst_t_* dec_inst); |
| // int16_t WebRtcG7221C_DecoderInit48(G722_1C_48_decinst_t_* dec_inst); |
| // |
| // int16_t WebRtcG7221C_Encode24(G722_1C_24_encinst_t_* enc_inst, |
| // int16_t* input, |
| // int16_t len, |
| // int16_t* output); |
| // int16_t WebRtcG7221C_Encode32(G722_1C_32_encinst_t_* enc_inst, |
| // int16_t* input, |
| // int16_t len, |
| // int16_t* output); |
| // int16_t WebRtcG7221C_Encode48(G722_1C_48_encinst_t_* enc_inst, |
| // int16_t* input, |
| // int16_t len, |
| // int16_t* output); |
| // |
| // int16_t WebRtcG7221C_Decode24(G722_1C_24_decinst_t_* dec_inst, |
| // int16_t* bitstream, |
| // int16_t len, |
| // int16_t* output); |
| // int16_t WebRtcG7221C_Decode32(G722_1C_32_decinst_t_* dec_inst, |
| // int16_t* bitstream, |
| // int16_t len, |
| // int16_t* output); |
| // int16_t WebRtcG7221C_Decode48(G722_1C_48_decinst_t_* dec_inst, |
| // int16_t* bitstream, |
| // int16_t len, |
| // int16_t* output); |
| // |
| // int16_t WebRtcG7221C_DecodePlc24(G722_1C_24_decinst_t_* dec_inst, |
| // int16_t* output, |
| // int16_t nr_lost_frames); |
| // int16_t WebRtcG7221C_DecodePlc32(G722_1C_32_decinst_t_* dec_inst, |
| // int16_t* output, |
| // int16_t nr_lost_frames); |
| // int16_t WebRtcG7221C_DecodePlc48(G722_1C_48_decinst_t_* dec_inst, |
| // int16_t* output, |
| // int16_t nr_lost_frames); |
| #endif |
| |
| namespace webrtc { |
| |
| namespace acm2 { |
| |
| #ifndef WEBRTC_CODEC_G722_1C |
| |
| ACMG722_1C::ACMG722_1C(int16_t /* codec_id */) |
| : operational_rate_(-1), |
| encoder_inst_ptr_(NULL), |
| encoder_inst_ptr_right_(NULL), |
| encoder_inst24_ptr_(NULL), |
| encoder_inst24_ptr_right_(NULL), |
| encoder_inst32_ptr_(NULL), |
| encoder_inst32_ptr_right_(NULL), |
| encoder_inst48_ptr_(NULL), |
| encoder_inst48_ptr_right_(NULL) { |
| return; |
| } |
| |
| ACMG722_1C::~ACMG722_1C() { return; } |
| |
| int16_t ACMG722_1C::InternalEncode(uint8_t* /* bitstream */, |
| int16_t* /* bitstream_len_byte */) { |
| return -1; |
| } |
| |
| int16_t ACMG722_1C::InternalInitEncoder( |
| WebRtcACMCodecParams* /* codec_params */) { |
| return -1; |
| } |
| |
| ACMGenericCodec* ACMG722_1C::CreateInstance(void) { return NULL; } |
| |
| int16_t ACMG722_1C::InternalCreateEncoder() { return -1; } |
| |
| void ACMG722_1C::DestructEncoderSafe() { return; } |
| |
| #else //===================== Actual Implementation ======================= |
| ACMG722_1C::ACMG722_1C(int16_t codec_id) |
| : encoder_inst_ptr_(NULL), |
| encoder_inst_ptr_right_(NULL), |
| encoder_inst24_ptr_(NULL), |
| encoder_inst24_ptr_right_(NULL), |
| encoder_inst32_ptr_(NULL), |
| encoder_inst32_ptr_right_(NULL), |
| encoder_inst48_ptr_(NULL), |
| encoder_inst48_ptr_right_(NULL) { |
| codec_id_ = codec_id; |
| if (codec_id_ == ACMCodecDB::kG722_1C_24) { |
| operational_rate_ = 24000; |
| } else if (codec_id_ == ACMCodecDB::kG722_1C_32) { |
| operational_rate_ = 32000; |
| } else if (codec_id_ == ACMCodecDB::kG722_1C_48) { |
| operational_rate_ = 48000; |
| } else { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, |
| "Wrong codec id for G722_1c."); |
| operational_rate_ = -1; |
| } |
| return; |
| } |
| |
| ACMG722_1C::~ACMG722_1C() { |
| if (encoder_inst_ptr_ != NULL) { |
| delete encoder_inst_ptr_; |
| encoder_inst_ptr_ = NULL; |
| } |
| if (encoder_inst_ptr_right_ != NULL) { |
| delete encoder_inst_ptr_right_; |
| encoder_inst_ptr_right_ = NULL; |
| } |
| |
| switch (operational_rate_) { |
| case 24000: { |
| encoder_inst24_ptr_ = NULL; |
| encoder_inst24_ptr_right_ = NULL; |
| break; |
| } |
| case 32000: { |
| encoder_inst32_ptr_ = NULL; |
| encoder_inst32_ptr_right_ = NULL; |
| break; |
| } |
| case 48000: { |
| encoder_inst48_ptr_ = NULL; |
| encoder_inst48_ptr_right_ = NULL; |
| break; |
| } |
| default: { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, |
| "Wrong rate for G722_1c."); |
| break; |
| } |
| } |
| return; |
| } |
| |
| int16_t ACMG722_1C::InternalEncode(uint8_t* bitstream, |
| int16_t* bitstream_len_byte) { |
| int16_t left_channel[640]; |
| int16_t right_channel[640]; |
| int16_t len_in_bytes; |
| int16_t out_bits[240]; |
| |
| // If stereo, split input signal in left and right channel before encoding |
| if (num_channels_ == 2) { |
| for (int i = 0, j = 0; i < frame_len_smpl_ * 2; i += 2, j++) { |
| left_channel[j] = in_audio_[in_audio_ix_read_ + i]; |
| right_channel[j] = in_audio_[in_audio_ix_read_ + i + 1]; |
| } |
| } else { |
| memcpy(left_channel, &in_audio_[in_audio_ix_read_], 640); |
| } |
| |
| switch (operational_rate_) { |
| case 24000: { |
| len_in_bytes = WebRtcG7221C_Encode24(encoder_inst24_ptr_, left_channel, |
| 640, &out_bits[0]); |
| if (num_channels_ == 2) { |
| len_in_bytes += WebRtcG7221C_Encode24(encoder_inst24_ptr_right_, |
| right_channel, 640, |
| &out_bits[len_in_bytes / 2]); |
| } |
| break; |
| } |
| case 32000: { |
| len_in_bytes = WebRtcG7221C_Encode32(encoder_inst32_ptr_, left_channel, |
| 640, &out_bits[0]); |
| if (num_channels_ == 2) { |
| len_in_bytes += WebRtcG7221C_Encode32(encoder_inst32_ptr_right_, |
| right_channel, 640, |
| &out_bits[len_in_bytes / 2]); |
| } |
| break; |
| } |
| case 48000: { |
| len_in_bytes = WebRtcG7221C_Encode48(encoder_inst48_ptr_, left_channel, |
| 640, &out_bits[0]); |
| if (num_channels_ == 2) { |
| len_in_bytes += WebRtcG7221C_Encode48(encoder_inst48_ptr_right_, |
| right_channel, 640, |
| &out_bits[len_in_bytes / 2]); |
| } |
| break; |
| } |
| default: { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, |
| "InternalEncode: Wrong rate for G722_1c."); |
| return -1; |
| } |
| } |
| |
| memcpy(bitstream, out_bits, len_in_bytes); |
| *bitstream_len_byte = len_in_bytes; |
| |
| // increment the read index this tell the caller that how far |
| // we have gone forward in reading the audio buffer |
| in_audio_ix_read_ += 640 * num_channels_; |
| |
| return *bitstream_len_byte; |
| } |
| |
| int16_t ACMG722_1C::InternalInitEncoder(WebRtcACMCodecParams* codec_params) { |
| int16_t ret; |
| |
| switch (operational_rate_) { |
| case 24000: { |
| ret = WebRtcG7221C_EncoderInit24(encoder_inst24_ptr_right_); |
| if (ret < 0) { |
| return ret; |
| } |
| return WebRtcG7221C_EncoderInit24(encoder_inst24_ptr_); |
| } |
| case 32000: { |
| ret = WebRtcG7221C_EncoderInit32(encoder_inst32_ptr_right_); |
| if (ret < 0) { |
| return ret; |
| } |
| return WebRtcG7221C_EncoderInit32(encoder_inst32_ptr_); |
| } |
| case 48000: { |
| ret = WebRtcG7221C_EncoderInit48(encoder_inst48_ptr_right_); |
| if (ret < 0) { |
| return ret; |
| } |
| return WebRtcG7221C_EncoderInit48(encoder_inst48_ptr_); |
| } |
| default: { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, |
| "InternalInitEncode: Wrong rate for G722_1c."); |
| return -1; |
| } |
| } |
| } |
| |
| ACMGenericCodec* ACMG722_1C::CreateInstance(void) { return NULL; } |
| |
| int16_t ACMG722_1C::InternalCreateEncoder() { |
| if ((encoder_inst_ptr_ == NULL) || (encoder_inst_ptr_right_ == NULL)) { |
| return -1; |
| } |
| switch (operational_rate_) { |
| case 24000: { |
| WebRtcG7221C_CreateEnc24(&encoder_inst24_ptr_); |
| WebRtcG7221C_CreateEnc24(&encoder_inst24_ptr_right_); |
| break; |
| } |
| case 32000: { |
| WebRtcG7221C_CreateEnc32(&encoder_inst32_ptr_); |
| WebRtcG7221C_CreateEnc32(&encoder_inst32_ptr_right_); |
| break; |
| } |
| case 48000: { |
| WebRtcG7221C_CreateEnc48(&encoder_inst48_ptr_); |
| WebRtcG7221C_CreateEnc48(&encoder_inst48_ptr_right_); |
| break; |
| } |
| default: { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, unique_id_, |
| "InternalCreateEncoder: Wrong rate for G722_1c."); |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| void ACMG722_1C::DestructEncoderSafe() { |
| encoder_exist_ = false; |
| encoder_initialized_ = false; |
| if (encoder_inst_ptr_ != NULL) { |
| delete encoder_inst_ptr_; |
| encoder_inst_ptr_ = NULL; |
| } |
| if (encoder_inst_ptr_right_ != NULL) { |
| delete encoder_inst_ptr_right_; |
| encoder_inst_ptr_right_ = NULL; |
| } |
| encoder_inst24_ptr_ = NULL; |
| encoder_inst32_ptr_ = NULL; |
| encoder_inst48_ptr_ = NULL; |
| } |
| |
| #endif |
| |
| } // namespace acm2 |
| |
| } // namespace webrtc |
