| /* |
| * Copyright (c) 2011 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 "acm_g729.h" |
| #include "acm_common_defs.h" |
| #include "acm_neteq.h" |
| #include "trace.h" |
| #include "webrtc_neteq.h" |
| #include "webrtc_neteq_help_macros.h" |
| |
| #ifdef WEBRTC_CODEC_G729 |
| // NOTE! G.729 is not included in the open-source package. The following |
| // interface file is needed: |
| // |
| // /modules/audio_coding/codecs/g729/main/interface/g729_interface.h |
| // |
| // The API in the header file should match the one below. |
| // |
| // int16_t WebRtcG729_CreateEnc(G729_encinst_t_** inst); |
| // int16_t WebRtcG729_CreateDec(G729_decinst_t_** inst); |
| // int16_t WebRtcG729_FreeEnc(G729_encinst_t_* inst); |
| // int16_t WebRtcG729_FreeDec(G729_decinst_t_* inst); |
| // int16_t WebRtcG729_Encode(G729_encinst_t_* encInst, int16_t* input, |
| // int16_t len, int16_t* output); |
| // int16_t WebRtcG729_EncoderInit(G729_encinst_t_* encInst, int16_t mode); |
| // int16_t WebRtcG729_Decode(G729_decinst_t_* decInst); |
| // int16_t WebRtcG729_DecodeBwe(G729_decinst_t_* decInst, int16_t* input); |
| // int16_t WebRtcG729_DecodePlc(G729_decinst_t_* decInst); |
| // int16_t WebRtcG729_DecoderInit(G729_decinst_t_* decInst); |
| // void WebRtcG729_Version(char *versionStr, short len); |
| #include "g729_interface.h" |
| #endif |
| |
| namespace webrtc { |
| |
| #ifndef WEBRTC_CODEC_G729 |
| |
| ACMG729::ACMG729(WebRtc_Word16 /* codecID */) |
| : _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL) { |
| return; |
| } |
| |
| |
| ACMG729::~ACMG729() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalEncode( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16* /* bitStreamLenByte */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::EnableDTX() |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::DisableDTX() |
| { |
| return -1; |
| } |
| |
| WebRtc_Word32 |
| ACMG729::ReplaceInternalDTXSafe( |
| const bool /*replaceInternalDTX*/) |
| { |
| return -1; |
| } |
| |
| WebRtc_Word32 |
| ACMG729::IsInternalDTXReplacedSafe( |
| bool* /* internalDTXReplaced */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalInitEncoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMG729::CodecDef( |
| WebRtcNetEQ_CodecDef& /* codecDef */, |
| const CodecInst& /* codecInst */) |
| { |
| return -1; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMG729::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalCreateEncoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMG729::DestructEncoderSafe() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalCreateDecoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMG729::DestructDecoderSafe() |
| { |
| return; |
| } |
| |
| |
| void |
| ACMG729::InternalDestructEncoderInst( |
| void* /* ptrInst */) |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::UnregisterFromNetEqSafe( |
| ACMNetEQ* /* netEq */, |
| WebRtc_Word16 /* payloadType */) |
| { |
| return -1; |
| } |
| |
| |
| #else //===================== Actual Implementation ======================= |
| |
| ACMG729::ACMG729( |
| WebRtc_Word16 codecID): |
| _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL) |
| { |
| _codecID = codecID; |
| _hasInternalDTX = true; |
| return; |
| } |
| |
| |
| ACMG729::~ACMG729() |
| { |
| if(_encoderInstPtr != NULL) |
| { |
| // Delete encoder memory |
| WebRtcG729_FreeEnc(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| if(_decoderInstPtr != NULL) |
| { |
| // Delete decoder memory |
| WebRtcG729_FreeDec(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalEncode( |
| WebRtc_UWord8* bitStream, |
| WebRtc_Word16* bitStreamLenByte) |
| { |
| // Initialize before entering the loop |
| WebRtc_Word16 noEncodedSamples = 0; |
| WebRtc_Word16 tmpLenByte = 0; |
| WebRtc_Word16 vadDecision = 0; |
| *bitStreamLenByte = 0; |
| while(noEncodedSamples < _frameLenSmpl) |
| { |
| // Call G.729 encoder with pointer to encoder memory, input |
| // audio, number of samples and bitsream |
| tmpLenByte = WebRtcG729_Encode(_encoderInstPtr, |
| &_inAudio[_inAudioIxRead], 80, |
| (WebRtc_Word16*)(&(bitStream[*bitStreamLenByte]))); |
| |
| // increment the read index this tell the caller that how far |
| // we have gone forward in reading the audio buffer |
| _inAudioIxRead += 80; |
| |
| // sanity check |
| if(tmpLenByte < 0) |
| { |
| // error has happened |
| *bitStreamLenByte = 0; |
| return -1; |
| } |
| |
| // increment number of written bytes |
| *bitStreamLenByte += tmpLenByte; |
| switch(tmpLenByte) |
| { |
| case 0: |
| { |
| if(0 == noEncodedSamples) |
| { |
| // this is the first 10 ms in this packet and there is |
| // no data generated, perhaps DTX is enabled and the |
| // codec is not generating any bit-stream for this 10 ms. |
| // we do not continue encoding this frame. |
| return 0; |
| } |
| break; |
| } |
| case 2: |
| { |
| // check if G.729 internal DTX is enabled |
| if(_hasInternalDTX && _dtxEnabled) |
| { |
| vadDecision = 0; |
| for(WebRtc_Word16 n = 0; n < MAX_FRAME_SIZE_10MSEC; n++) |
| { |
| _vadLabel[n] = vadDecision; |
| } |
| } |
| // we got a SID and have to send out this packet no matter |
| // how much audio we have encoded |
| return *bitStreamLenByte; |
| } |
| case 10: |
| { |
| vadDecision = 1; |
| // this is a valid length just continue encoding |
| break; |
| } |
| default: |
| { |
| return -1; |
| } |
| } |
| |
| // update number of encoded samples |
| noEncodedSamples += 80; |
| } |
| |
| // update VAD decision vector |
| if(_hasInternalDTX && !vadDecision && _dtxEnabled) |
| { |
| for(WebRtc_Word16 n = 0; n < MAX_FRAME_SIZE_10MSEC; n++) |
| { |
| _vadLabel[n] = vadDecision; |
| } |
| } |
| |
| // done encoding, return number of encoded bytes |
| return *bitStreamLenByte; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::EnableDTX() |
| { |
| if(_dtxEnabled) |
| { |
| // DTX already enabled, do nothing |
| return 0; |
| } |
| else if(_encoderExist) |
| { |
| // Re-init the G.729 encoder to turn on DTX |
| if(WebRtcG729_EncoderInit(_encoderInstPtr, 1) < 0) |
| { |
| return -1; |
| } |
| _dtxEnabled = true; |
| return 0; |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::DisableDTX() |
| { |
| if(!_dtxEnabled) |
| { |
| // DTX already dissabled, do nothing |
| return 0; |
| } |
| else if(_encoderExist) |
| { |
| // Re-init the G.729 decoder to turn off DTX |
| if(WebRtcG729_EncoderInit(_encoderInstPtr, 0) < 0) |
| { |
| return -1; |
| } |
| _dtxEnabled = false; |
| return 0; |
| } |
| else |
| { |
| // encoder doesn't exists, therefore disabling is harmless |
| return 0; |
| } |
| } |
| |
| |
| WebRtc_Word32 |
| ACMG729::ReplaceInternalDTXSafe( |
| const bool replaceInternalDTX) |
| { |
| // This function is used to dissable the G.729 built in DTX and use an |
| // external instead. |
| |
| if(replaceInternalDTX == _hasInternalDTX) |
| { |
| // Make sure we keep the DTX/VAD setting if possible |
| bool oldEnableDTX = _dtxEnabled; |
| bool oldEnableVAD = _vadEnabled; |
| ACMVADMode oldMode = _vadMode; |
| if (replaceInternalDTX) |
| { |
| // Disable internal DTX before enabling external DTX |
| DisableDTX(); |
| } |
| else |
| { |
| // Disable external DTX before enabling internal |
| ACMGenericCodec::DisableDTX(); |
| } |
| _hasInternalDTX = !replaceInternalDTX; |
| WebRtc_Word16 status = SetVADSafe(oldEnableDTX, oldEnableVAD, oldMode); |
| // Check if VAD status has changed from inactive to active, or if error was |
| // reported |
| if (status == 1) { |
| _vadEnabled = true; |
| return status; |
| } else if (status < 0) { |
| _hasInternalDTX = replaceInternalDTX; |
| return -1; |
| } |
| } |
| return 0; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMG729::IsInternalDTXReplacedSafe( |
| bool* internalDTXReplaced) |
| { |
| // Get status of wether DTX is replaced or not |
| *internalDTXReplaced = !_hasInternalDTX; |
| return 0; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| // This function is not used. G.729 decoder is called from inside NetEQ |
| return 0; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalInitEncoder( |
| WebRtcACMCodecParams* codecParams) |
| { |
| // Init G.729 encoder |
| return WebRtcG729_EncoderInit(_encoderInstPtr, |
| ((codecParams->enableDTX)? 1:0)); |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| // Init G.729 decoder |
| return WebRtcG729_DecoderInit(_decoderInstPtr); |
| } |
| |
| |
| WebRtc_Word32 |
| ACMG729::CodecDef( |
| WebRtcNetEQ_CodecDef& codecDef, |
| const CodecInst& codecInst) |
| { |
| if (!_decoderInitialized) |
| { |
| // Todo: |
| // log error |
| return -1; |
| } |
| |
| // Fill up the structure by calling |
| // "SET_CODEC_PAR" & "SET_G729_FUNCTION." |
| // Then call NetEQ to add the codec to it's |
| // database. |
| SET_CODEC_PAR((codecDef), kDecoderG729, codecInst.pltype, |
| _decoderInstPtr, 8000); |
| SET_G729_FUNCTIONS((codecDef)); |
| return 0; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMG729::CreateInstance(void) |
| { |
| // Function not used |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalCreateEncoder() |
| { |
| // Create encoder memory |
| return WebRtcG729_CreateEnc(&_encoderInstPtr); |
| } |
| |
| |
| void |
| ACMG729::DestructEncoderSafe() |
| { |
| // Free encoder memory |
| _encoderExist = false; |
| _encoderInitialized = false; |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcG729_FreeEnc(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::InternalCreateDecoder() |
| { |
| // Create decoder memory |
| return WebRtcG729_CreateDec(&_decoderInstPtr); |
| } |
| |
| |
| void |
| ACMG729::DestructDecoderSafe() |
| { |
| // Free decoder memory |
| _decoderExist = false; |
| _decoderInitialized = false; |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcG729_FreeDec(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| } |
| |
| |
| void |
| ACMG729::InternalDestructEncoderInst( |
| void* ptrInst) |
| { |
| if(ptrInst != NULL) |
| { |
| WebRtcG729_FreeEnc((G729_encinst_t_*)ptrInst); |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729::UnregisterFromNetEqSafe( |
| ACMNetEQ* netEq, |
| WebRtc_Word16 payloadType) |
| { |
| // Remove codec from the NetEQ database |
| if(payloadType != _decoderParams.codecInstant.pltype) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "Cannot unregister codec %s given payload-type %d does not match \ |
| the stored payload type", |
| _decoderParams.codecInstant.plname, |
| payloadType, |
| _decoderParams.codecInstant.pltype); |
| return -1; |
| } |
| return netEq->RemoveCodec(kDecoderG729); |
| } |
| |
| #endif |
| |
| } // namespace webrtc |