c454fab03b
TEST=VoE auto-test, audio_coding_module_test; only 15 ms of teststereo_out_1.pcm is not bit-exact with output file of the head revision Review URL: https://webrtc-codereview.appspot.com/937035 git-svn-id: http://webrtc.googlecode.com/svn/trunk@3287 4adac7df-926f-26a2-2b94-8c16560cd09d
355 lines
11 KiB
C++
355 lines
11 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/audio_coding/main/source/acm_g722.h"
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#include "webrtc/modules/audio_coding/codecs/g722/include/g722_interface.h"
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#include "webrtc/modules/audio_coding/main/source/acm_codec_database.h"
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#include "webrtc/modules/audio_coding/main/source/acm_common_defs.h"
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#include "webrtc/modules/audio_coding/main/source/acm_neteq.h"
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#include "webrtc/modules/audio_coding/neteq/interface/webrtc_neteq.h"
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#include "webrtc/modules/audio_coding/neteq/interface/webrtc_neteq_help_macros.h"
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#include "webrtc/system_wrappers/interface/trace.h"
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namespace webrtc {
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#ifndef WEBRTC_CODEC_G722
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ACMG722::ACMG722(WebRtc_Word16 /* codec_id */)
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: ptr_enc_str_(NULL),
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ptr_dec_str_(NULL),
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encoder_inst_ptr_(NULL),
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encoder_inst_ptr_right_(NULL),
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decoder_inst_ptr_(NULL) {}
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ACMG722::~ACMG722() {}
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WebRtc_Word32 ACMG722::Add10MsDataSafe(
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const WebRtc_UWord32 /* timestamp */,
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const WebRtc_Word16* /* data */,
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const WebRtc_UWord16 /* length_smpl */,
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const WebRtc_UWord8 /* audio_channel */) {
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return -1;
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}
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WebRtc_Word16 ACMG722::InternalEncode(
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WebRtc_UWord8* /* bitstream */,
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WebRtc_Word16* /* bitstream_len_byte */) {
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return -1;
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}
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WebRtc_Word16 ACMG722::DecodeSafe(WebRtc_UWord8* /* bitstream */,
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WebRtc_Word16 /* bitstream_len_byte */,
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WebRtc_Word16* /* audio */,
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WebRtc_Word16* /* audio_samples */,
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WebRtc_Word8* /* speech_type */) {
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return -1;
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}
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WebRtc_Word16 ACMG722::InternalInitEncoder(
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WebRtcACMCodecParams* /* codec_params */) {
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return -1;
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}
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WebRtc_Word16 ACMG722::InternalInitDecoder(
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WebRtcACMCodecParams* /* codec_params */) {
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return -1;
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}
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WebRtc_Word32 ACMG722::CodecDef(WebRtcNetEQ_CodecDef& /* codec_def */,
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const CodecInst& /* codec_inst */) {
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return -1;
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}
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ACMGenericCodec* ACMG722::CreateInstance(void) {
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return NULL;
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}
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WebRtc_Word16 ACMG722::InternalCreateEncoder() {
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return -1;
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}
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void ACMG722::DestructEncoderSafe() {
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return;
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}
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WebRtc_Word16 ACMG722::InternalCreateDecoder() {
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return -1;
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}
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void ACMG722::DestructDecoderSafe() {
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return;
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}
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void ACMG722::InternalDestructEncoderInst(void* /* ptr_inst */) {
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return;
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}
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void ACMG722::SplitStereoPacket(uint8_t* /*payload*/,
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int32_t* /*payload_length*/) {}
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#else //===================== Actual Implementation =======================
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// Encoder and decoder memory
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struct ACMG722EncStr {
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G722EncInst* inst; // instance for left channel in case of stereo
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G722EncInst* inst_right; // instance for right channel in case of stereo
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};
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struct ACMG722DecStr {
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G722DecInst* inst; // instance for left channel in case of stereo
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G722DecInst* inst_right; // instance for right channel in case of stereo
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};
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ACMG722::ACMG722(WebRtc_Word16 codec_id)
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: encoder_inst_ptr_(NULL),
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encoder_inst_ptr_right_(NULL),
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decoder_inst_ptr_(NULL) {
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// Encoder
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ptr_enc_str_ = new ACMG722EncStr;
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if (ptr_enc_str_ != NULL) {
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ptr_enc_str_->inst = NULL;
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ptr_enc_str_->inst_right = NULL;
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}
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// Decoder
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ptr_dec_str_ = new ACMG722DecStr;
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if (ptr_dec_str_ != NULL) {
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ptr_dec_str_->inst = NULL;
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ptr_dec_str_->inst_right = NULL; // Not used
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}
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codec_id_ = codec_id;
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return;
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}
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ACMG722::~ACMG722() {
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// Encoder
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if (ptr_enc_str_ != NULL) {
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if (ptr_enc_str_->inst != NULL) {
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WebRtcG722_FreeEncoder(ptr_enc_str_->inst);
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ptr_enc_str_->inst = NULL;
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}
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if (ptr_enc_str_->inst_right != NULL) {
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WebRtcG722_FreeEncoder(ptr_enc_str_->inst_right);
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ptr_enc_str_->inst_right = NULL;
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}
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delete ptr_enc_str_;
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ptr_enc_str_ = NULL;
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}
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// Decoder
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if (ptr_dec_str_ != NULL) {
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if (ptr_dec_str_->inst != NULL) {
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WebRtcG722_FreeDecoder(ptr_dec_str_->inst);
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ptr_dec_str_->inst = NULL;
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}
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if (ptr_dec_str_->inst_right != NULL) {
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WebRtcG722_FreeDecoder(ptr_dec_str_->inst_right);
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ptr_dec_str_->inst_right = NULL;
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}
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delete ptr_dec_str_;
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ptr_dec_str_ = NULL;
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}
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return;
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}
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WebRtc_Word32 ACMG722::Add10MsDataSafe(const WebRtc_UWord32 timestamp,
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const WebRtc_Word16* data,
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const WebRtc_UWord16 length_smpl,
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const WebRtc_UWord8 audio_channel) {
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return ACMGenericCodec::Add10MsDataSafe((timestamp >> 1), data, length_smpl,
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audio_channel);
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}
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WebRtc_Word16 ACMG722::InternalEncode(WebRtc_UWord8* bitstream,
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WebRtc_Word16* bitstream_len_byte) {
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// If stereo, split input signal in left and right channel before encoding
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if (num_channels_ == 2) {
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WebRtc_Word16 left_channel[960];
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WebRtc_Word16 right_channel[960];
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WebRtc_UWord8 out_left[480];
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WebRtc_UWord8 out_right[480];
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WebRtc_Word16 len_in_bytes;
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for (int i = 0, j = 0; i < frame_len_smpl_ * 2; i += 2, j++) {
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left_channel[j] = in_audio_[in_audio_ix_read_ + i];
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right_channel[j] = in_audio_[in_audio_ix_read_ + i + 1];
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}
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len_in_bytes = WebRtcG722_Encode(encoder_inst_ptr_, left_channel,
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frame_len_smpl_,
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(WebRtc_Word16*)out_left);
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len_in_bytes += WebRtcG722_Encode(encoder_inst_ptr_right_, right_channel,
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frame_len_smpl_,
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(WebRtc_Word16*)out_right);
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*bitstream_len_byte = len_in_bytes;
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// Interleave the 4 bits per sample from left and right channel
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for (int i = 0, j = 0; i < len_in_bytes; i += 2, j++) {
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bitstream[i] = (out_left[j] & 0xF0) + (out_right[j] >> 4);
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bitstream[i + 1] = ((out_left[j] & 0x0F) << 4) + (out_right[j] & 0x0F);
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}
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} else {
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*bitstream_len_byte = WebRtcG722_Encode(encoder_inst_ptr_,
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&in_audio_[in_audio_ix_read_],
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frame_len_smpl_,
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(WebRtc_Word16*)bitstream);
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}
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// increment the read index this tell the caller how far
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// we have gone forward in reading the audio buffer
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in_audio_ix_read_ += frame_len_smpl_ * num_channels_;
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return *bitstream_len_byte;
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}
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WebRtc_Word16 ACMG722::DecodeSafe(WebRtc_UWord8* /* bitstream */,
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WebRtc_Word16 /* bitstream_len_byte */,
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WebRtc_Word16* /* audio */,
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WebRtc_Word16* /* audio_samples */,
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WebRtc_Word8* /* speech_type */) {
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return 0;
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}
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WebRtc_Word16 ACMG722::InternalInitEncoder(WebRtcACMCodecParams* codec_params) {
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if (codec_params->codec_inst.channels == 2) {
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// Create codec struct for right channel
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if (ptr_enc_str_->inst_right == NULL) {
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WebRtcG722_CreateEncoder(&ptr_enc_str_->inst_right);
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if (ptr_enc_str_->inst_right == NULL) {
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return -1;
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}
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}
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encoder_inst_ptr_right_ = ptr_enc_str_->inst_right;
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if (WebRtcG722_EncoderInit(encoder_inst_ptr_right_) < 0) {
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return -1;
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}
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}
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return WebRtcG722_EncoderInit(encoder_inst_ptr_);
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}
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WebRtc_Word16 ACMG722::InternalInitDecoder(
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WebRtcACMCodecParams* /* codec_params */) {
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return WebRtcG722_DecoderInit(decoder_inst_ptr_);
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}
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WebRtc_Word32 ACMG722::CodecDef(WebRtcNetEQ_CodecDef& codec_def,
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const CodecInst& codec_inst) {
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if (!decoder_initialized_) {
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// TODO(turajs): log error
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return -1;
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}
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// Fill up the structure by calling
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// "SET_CODEC_PAR" & "SET_G722_FUNCTION."
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// Then call NetEQ to add the codec to it's
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// database.
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if (codec_inst.channels == 1) {
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SET_CODEC_PAR(codec_def, kDecoderG722, codec_inst.pltype, decoder_inst_ptr_,
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16000);
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} else {
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SET_CODEC_PAR(codec_def, kDecoderG722_2ch, codec_inst.pltype,
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decoder_inst_ptr_, 16000);
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}
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SET_G722_FUNCTIONS(codec_def);
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return 0;
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}
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ACMGenericCodec* ACMG722::CreateInstance(void) {
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return NULL;
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}
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WebRtc_Word16 ACMG722::InternalCreateEncoder() {
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if (ptr_enc_str_ == NULL) {
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// this structure must be created at the costructor
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// if it is still NULL then there is a probelm and
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// we dont continue
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return -1;
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}
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WebRtcG722_CreateEncoder(&ptr_enc_str_->inst);
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if (ptr_enc_str_->inst == NULL) {
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return -1;
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}
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encoder_inst_ptr_ = ptr_enc_str_->inst;
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return 0;
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}
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void ACMG722::DestructEncoderSafe() {
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if (ptr_enc_str_ != NULL) {
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if (ptr_enc_str_->inst != NULL) {
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WebRtcG722_FreeEncoder(ptr_enc_str_->inst);
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ptr_enc_str_->inst = NULL;
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}
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}
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encoder_exist_ = false;
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encoder_initialized_ = false;
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}
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WebRtc_Word16 ACMG722::InternalCreateDecoder() {
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if (ptr_dec_str_ == NULL) {
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// this structure must be created at the costructor
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// if it is still NULL then there is a probelm and
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// we dont continue
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return -1;
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}
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WebRtcG722_CreateDecoder(&ptr_dec_str_->inst);
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if (ptr_dec_str_->inst == NULL) {
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return -1;
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}
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decoder_inst_ptr_ = ptr_dec_str_->inst;
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return 0;
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}
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void ACMG722::DestructDecoderSafe() {
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decoder_exist_ = false;
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decoder_initialized_ = false;
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if (ptr_dec_str_ != NULL) {
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if (ptr_dec_str_->inst != NULL) {
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WebRtcG722_FreeDecoder(ptr_dec_str_->inst);
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ptr_dec_str_->inst = NULL;
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}
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}
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}
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void ACMG722::InternalDestructEncoderInst(void* ptr_inst) {
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if (ptr_inst != NULL) {
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WebRtcG722_FreeEncoder(static_cast<G722EncInst*>(ptr_inst));
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}
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return;
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}
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// Split the stereo packet and place left and right channel after each other
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// in the payload vector.
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void ACMG722::SplitStereoPacket(uint8_t* payload, int32_t* payload_length) {
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uint8_t right_byte;
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// Check for valid inputs.
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assert(payload != NULL);
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assert(*payload_length > 0);
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// Regroup the 4 bits/sample so to |l1 l2| |r1 r2| |l3 l4| |r3 r4| ...,
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// where "lx" is 4 bits representing left sample number x, and "rx" right
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// sample. Two samples fits in one byte, represented with |...|.
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for (int i = 0; i < *payload_length; i += 2) {
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right_byte = ((payload[i] & 0x0F) << 4) + (payload[i + 1] & 0x0F);
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payload[i] = (payload[i] & 0xF0) + (payload[i + 1] >> 4);
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payload[i + 1] = right_byte;
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}
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// Move one byte representing right channel each loop, and place it at the
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// end of the bytestream vector. After looping the data is reordered to:
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// |l1 l2| |l3 l4| ... |l(N-1) lN| |r1 r2| |r3 r4| ... |r(N-1) r(N)|,
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// where N is the total number of samples.
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for (int i = 0; i < *payload_length / 2; i++) {
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right_byte = payload[i + 1];
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memmove(&payload[i + 1], &payload[i + 2], *payload_length - i - 2);
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payload[*payload_length - 1] = right_byte;
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}
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}
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#endif
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} // namespace webrtc
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