| /* |
| * 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_g7291.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_1 |
| // NOTE! G.729.1 is not included in the open-source package. The following |
| // interface file is needed: |
| // |
| // /modules/audio_coding/codecs/g7291/main/interface/g7291_interface.h |
| // |
| // The API in the header file should match the one below. |
| // |
| // int16_t WebRtcG7291_Create(G729_1_inst_t_** inst); |
| // int16_t WebRtcG7291_Free(G729_1_inst_t_* inst); |
| // int16_t WebRtcG7291_Encode(G729_1_inst_t_* encInst, int16_t* input, |
| // int16_t* output, int16_t myRate, |
| // int16_t nrFrames); |
| // int16_t WebRtcG7291_EncoderInit(G729_1_inst_t_* encInst, int16_t myRate, |
| // int16_t flag8kHz, int16_t flagG729mode); |
| // int16_t WebRtcG7291_Decode(G729_1_inst_t_* decInst); |
| // int16_t WebRtcG7291_DecodeBwe(G729_1_inst_t_* decInst, int16_t* input); |
| // int16_t WebRtcG7291_DecodePlc(G729_1_inst_t_* decInst); |
| // int16_t WebRtcG7291_DecoderInit(G729_1_inst_t_* decInst); |
| // void WebRtcG7291_Version(char *versionStr, short len); |
| #include "g7291_interface.h" |
| #endif |
| |
| namespace webrtc { |
| |
| #ifndef WEBRTC_CODEC_G729_1 |
| |
| ACMG729_1::ACMG729_1( WebRtc_Word16 /* codecID */) |
| : _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL) { |
| return; |
| } |
| |
| |
| ACMG729_1::~ACMG729_1() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalEncode( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16* /* bitStreamLenByte */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalInitEncoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMG729_1::CodecDef( |
| WebRtcNetEQ_CodecDef& /* codecDef */, |
| const CodecInst& /* codecInst */) |
| { |
| return -1; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMG729_1::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalCreateEncoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMG729_1::DestructEncoderSafe() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalCreateDecoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMG729_1::DestructDecoderSafe() |
| { |
| return; |
| } |
| |
| |
| void |
| ACMG729_1::InternalDestructEncoderInst( |
| void* /* ptrInst */) |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::UnregisterFromNetEqSafe( |
| ACMNetEQ* /* netEq */, |
| WebRtc_Word16 /* payloadType */) |
| { |
| return -1; |
| } |
| |
| WebRtc_Word16 |
| ACMG729_1::SetBitRateSafe( |
| const WebRtc_Word32 /*rate*/ ) |
| { |
| return -1; |
| } |
| |
| #else //===================== Actual Implementation ======================= |
| |
| struct G729_1_inst_t_; |
| |
| ACMG729_1::ACMG729_1( |
| WebRtc_Word16 codecID): |
| _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL) |
| { |
| _codecID = codecID; |
| // Our current G729.1 does not support Annex C |
| // which is DTX. |
| _hasInternalDTX = false; |
| |
| // Default rate |
| _myRate = 32000; |
| |
| _flag8kHz = 0; |
| _flagG729mode = 0; |
| return; |
| } |
| |
| ACMG729_1::~ACMG729_1() |
| { |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcG7291_Free(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcG7291_Free(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalEncode( |
| WebRtc_UWord8* bitStream, |
| WebRtc_Word16* bitStreamLenByte) |
| { |
| |
| // Initialize before entering the loop |
| WebRtc_Word16 noEncodedSamples = 0; |
| *bitStreamLenByte = 0; |
| |
| WebRtc_Word16 byteLengthFrame = 0; |
| |
| // Derive number of 20ms frames per encoded packet. |
| // [1,2,3] <=> [20,40,60]ms <=> [320,640,960] samples |
| WebRtc_Word16 n20msFrames = (_frameLenSmpl / 320); |
| // Byte length for the frame. +1 is for rate information. |
| byteLengthFrame = _myRate/(8*50) * n20msFrames + (1 - _flagG729mode); |
| |
| // The following might be revised if we have G729.1 Annex C (support for DTX); |
| do |
| { |
| *bitStreamLenByte = WebRtcG7291_Encode(_encoderInstPtr, &_inAudio[_inAudioIxRead], |
| (WebRtc_Word16*)bitStream, _myRate, n20msFrames); |
| |
| // increment the read index this tell the caller that how far |
| // we have gone forward in reading the audio buffer |
| _inAudioIxRead += 160; |
| |
| // sanity check |
| if(*bitStreamLenByte < 0) |
| { |
| // error has happened |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalEncode: Encode error for G729_1"); |
| *bitStreamLenByte = 0; |
| return -1; |
| } |
| |
| noEncodedSamples += 160; |
| } while(*bitStreamLenByte == 0); |
| |
| |
| // This criteria will change if we have Annex C. |
| if(*bitStreamLenByte != byteLengthFrame) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalEncode: Encode error for G729_1"); |
| *bitStreamLenByte = 0; |
| return -1; |
| } |
| |
| |
| if(noEncodedSamples != _frameLenSmpl) |
| { |
| *bitStreamLenByte = 0; |
| return -1; |
| } |
| |
| return *bitStreamLenByte; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return 0; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalInitEncoder( |
| WebRtcACMCodecParams* codecParams) |
| { |
| //set the bit rate and initialize |
| _myRate = codecParams->codecInstant.rate; |
| return SetBitRateSafe( (WebRtc_UWord32)_myRate); |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| if (WebRtcG7291_DecoderInit(_decoderInstPtr) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalInitDecoder: init decoder failed for G729_1"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMG729_1::CodecDef( |
| WebRtcNetEQ_CodecDef& codecDef, |
| const CodecInst& codecInst) |
| { |
| if (!_decoderInitialized) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "CodeDef: Decoder uninitialized for G729_1"); |
| 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_1, codecInst.pltype, |
| _decoderInstPtr, 16000); |
| SET_G729_1_FUNCTIONS((codecDef)); |
| return 0; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMG729_1::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalCreateEncoder() |
| { |
| if (WebRtcG7291_Create(&_encoderInstPtr) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalCreateEncoder: create encoder failed for G729_1"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| void |
| ACMG729_1::DestructEncoderSafe() |
| { |
| _encoderExist = false; |
| _encoderInitialized = false; |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcG7291_Free(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::InternalCreateDecoder() |
| { |
| if (WebRtcG7291_Create(&_decoderInstPtr) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalCreateDecoder: create decoder failed for G729_1"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| void |
| ACMG729_1::DestructDecoderSafe() |
| { |
| _decoderExist = false; |
| _decoderInitialized = false; |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcG7291_Free(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| } |
| |
| |
| void |
| ACMG729_1::InternalDestructEncoderInst( |
| void* ptrInst) |
| { |
| if(ptrInst != NULL) |
| { |
| //WebRtcG7291_Free((G729_1_inst_t*)ptrInst); |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMG729_1::UnregisterFromNetEqSafe( |
| ACMNetEQ* netEq, |
| WebRtc_Word16 payloadType) |
| { |
| if(payloadType != _decoderParams.codecInstant.pltype) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "Cannot unregister codec: given payload-type does not match \ |
| the stored payload type", |
| _decoderParams.codecInstant.plname, |
| payloadType, |
| _decoderParams.codecInstant.pltype); |
| return -1; |
| } |
| return netEq->RemoveCodec(kDecoderG729_1); |
| } |
| |
| WebRtc_Word16 |
| ACMG729_1::SetBitRateSafe( |
| const WebRtc_Word32 rate) |
| { |
| //allowed rates: { 8000, 12000, 14000, 16000, 18000, 20000, |
| // 22000, 24000, 26000, 28000, 30000, 32000}; |
| // TODO(tlegrand): This check exists in one other place two. Should be |
| // possible to reuse code. |
| switch(rate) |
| { |
| case 8000: |
| { |
| _myRate = 8000; |
| break; |
| } |
| case 12000: |
| { |
| _myRate = 12000; |
| break; |
| } |
| case 14000: |
| { |
| _myRate = 14000; |
| break; |
| } |
| case 16000: |
| { |
| _myRate = 16000; |
| break; |
| } |
| case 18000: |
| { |
| _myRate = 18000; |
| break; |
| } |
| case 20000: |
| { |
| _myRate = 20000; |
| break; |
| } |
| case 22000: |
| { |
| _myRate = 22000; |
| break; |
| } |
| case 24000: |
| { |
| _myRate = 24000; |
| break; |
| } |
| case 26000: |
| { |
| _myRate = 26000; |
| break; |
| } |
| case 28000: |
| { |
| _myRate = 28000; |
| break; |
| } |
| case 30000: |
| { |
| _myRate = 30000; |
| break; |
| } |
| case 32000: |
| { |
| _myRate = 32000; |
| break; |
| } |
| default: |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "SetBitRateSafe: Invalid rate G729_1"); |
| return -1; |
| } |
| } |
| |
| // Re-init with new rate |
| if (WebRtcG7291_EncoderInit(_encoderInstPtr, _myRate, _flag8kHz, _flagG729mode) >= 0) |
| { |
| _encoderParams.codecInstant.rate = _myRate; |
| return 0; |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| |
| |
| #endif |
| |
| } // namespace webrtc |