| /* |
| * 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_common_defs.h" |
| #include "acm_neteq.h" |
| #include "acm_opus.h" |
| #include "trace.h" |
| #include "webrtc_neteq.h" |
| #include "webrtc_neteq_help_macros.h" |
| |
| #ifdef WEBRTC_CODEC_OPUS |
| // NOTE! Opus is not included in the open-source package. Modify this file or your codec |
| // API to match the function call and name of used Opus API file. |
| // #include "opus_interface.h" |
| #endif |
| |
| namespace webrtc |
| { |
| |
| #ifndef WEBRTC_CODEC_OPUS |
| |
| ACMOPUS::ACMOPUS(WebRtc_Word16 /* codecID */) |
| : _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL), |
| _mySampFreq(0), |
| _myRate(0), |
| _opusMode(0), |
| _flagVBR(0) { |
| return; |
| } |
| |
| |
| ACMOPUS::~ACMOPUS() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalEncode( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16* /* bitStreamLenByte */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalInitEncoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMOPUS::CodecDef( |
| WebRtcNetEQ_CodecDef& /* codecDef */, |
| const CodecInst& /* codecInst */) |
| { |
| return -1; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMOPUS::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalCreateEncoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMOPUS::DestructEncoderSafe() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalCreateDecoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMOPUS::DestructDecoderSafe() |
| { |
| return; |
| } |
| |
| |
| void |
| ACMOPUS::InternalDestructEncoderInst( |
| void* /* ptrInst */) |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::UnregisterFromNetEqSafe( |
| ACMNetEQ* /* netEq */, |
| WebRtc_Word16 /* payloadType */) |
| { |
| return -1; |
| } |
| |
| WebRtc_Word16 |
| ACMOPUS::SetBitRateSafe( |
| const WebRtc_Word32 /*rate*/ ) |
| { |
| return -1; |
| } |
| |
| #else //===================== Actual Implementation ======================= |
| |
| // Remove when integrating a real Opus wrapper |
| extern WebRtc_Word16 WebRtcOpus_CreateEnc(OPUS_inst_t_** inst, WebRtc_Word16 samplFreq); |
| extern WebRtc_Word16 WebRtcOpus_CreateDec(OPUS_inst_t_** inst, WebRtc_Word16 samplFreq); |
| extern WebRtc_Word16 WebRtcOpus_FreeEnc(OPUS_inst_t_* inst); |
| extern WebRtc_Word16 WebRtcOpus_FreeDec(OPUS_inst_t_* inst); |
| extern WebRtc_Word16 WebRtcOpus_Encode(OPUS_inst_t_* encInst, |
| WebRtc_Word16* input, |
| WebRtc_Word16* output, |
| WebRtc_Word16 len, |
| WebRtc_Word16 byteLen); |
| extern WebRtc_Word16 WebRtcOpus_EncoderInit(OPUS_inst_t_* encInst, |
| WebRtc_Word16 samplFreq, |
| WebRtc_Word16 mode, |
| WebRtc_Word16 vbrFlag); |
| extern WebRtc_Word16 WebRtcOpus_Decode(OPUS_inst_t_* decInst); |
| extern WebRtc_Word16 WebRtcOpus_DecodeBwe(OPUS_inst_t_* decInst, WebRtc_Word16* input); |
| extern WebRtc_Word16 WebRtcOpus_DecodePlc(OPUS_inst_t_* decInst); |
| extern WebRtc_Word16 WebRtcOpus_DecoderInit(OPUS_inst_t_* decInst); |
| |
| ACMOPUS::ACMOPUS(WebRtc_Word16 codecID) |
| : _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL), |
| _mySampFreq(48000), // Default sampling frequency. |
| _myRate(50000), // Default rate. |
| _opusMode(1), // Default mode is the hybrid mode. |
| _flagVBR(0) { // Default VBR off. |
| _codecID = codecID; |
| |
| // Current implementation doesn't have DTX. That might change. |
| _hasInternalDTX = false; |
| |
| return; |
| } |
| |
| ACMOPUS::~ACMOPUS() |
| { |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcOpus_FreeEnc(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcOpus_FreeDec(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalEncode( |
| WebRtc_UWord8* bitStream, |
| WebRtc_Word16* bitStreamLenByte) |
| { |
| WebRtc_Word16 noEncodedSamples = 0; |
| WebRtc_Word16 tmpLenByte = 0; |
| *bitStreamLenByte = 0; |
| |
| WebRtc_Word16 byteLengthFrame = 0; |
| |
| // Derive what byte-length is requested |
| byteLengthFrame = _myRate*_frameLenSmpl/(8*_mySampFreq); |
| |
| // Call Encoder |
| *bitStreamLenByte = WebRtcOpus_Encode(_encoderInstPtr, &_inAudio[_inAudioIxRead], |
| (WebRtc_Word16*)bitStream, _frameLenSmpl, byteLengthFrame); |
| |
| // increment the read index this tell the caller that how far |
| // we have gone forward in reading the audio buffer |
| _inAudioIxRead += _frameLenSmpl; |
| |
| // sanity check |
| if(*bitStreamLenByte < 0) |
| { |
| // error has happened |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalEncode: Encode error for Opus"); |
| *bitStreamLenByte = 0; |
| return -1; |
| } |
| |
| return *bitStreamLenByte; |
| } |
| |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return 0; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalInitEncoder( |
| WebRtcACMCodecParams* codecParams) |
| { |
| //set the bit rate and initialize |
| _myRate = codecParams->codecInstant.rate; |
| return SetBitRateSafe( (WebRtc_UWord32)_myRate); |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| if (WebRtcOpus_DecoderInit(_decoderInstPtr) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalInitDecoder: init decoder failed for Opus"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMOPUS::CodecDef( |
| WebRtcNetEQ_CodecDef& codecDef, |
| const CodecInst& codecInst) |
| { |
| if (!_decoderInitialized) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "CodeDef: Decoder uninitialized for Opus"); |
| 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), kDecoderOpus, codecInst.pltype, |
| _decoderInstPtr, 16000); |
| SET_OPUS_FUNCTIONS((codecDef)); |
| return 0; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMOPUS::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalCreateEncoder() |
| { |
| if (WebRtcOpus_CreateEnc(&_encoderInstPtr, _mySampFreq) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalCreateEncoder: create encoder failed for Opus"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| void |
| ACMOPUS::DestructEncoderSafe() |
| { |
| _encoderExist = false; |
| _encoderInitialized = false; |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcOpus_FreeEnc(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::InternalCreateDecoder() |
| { |
| if (WebRtcOpus_CreateDec(&_decoderInstPtr, _mySampFreq) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalCreateDecoder: create decoder failed for Opus"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| void |
| ACMOPUS::DestructDecoderSafe() |
| { |
| _decoderExist = false; |
| _decoderInitialized = false; |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcOpus_FreeDec(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| } |
| |
| |
| void |
| ACMOPUS::InternalDestructEncoderInst( |
| void* ptrInst) |
| { |
| if(ptrInst != NULL) |
| { |
| WebRtcOpus_FreeEnc((OPUS_inst_t*)ptrInst); |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMOPUS::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(kDecoderOpus); |
| } |
| |
| WebRtc_Word16 |
| ACMOPUS::SetBitRateSafe( |
| const WebRtc_Word32 rate) |
| { |
| //allowed rates: {8000, 12000, 14000, 16000, 18000, 20000, |
| // 22000, 24000, 26000, 28000, 30000, 32000}; |
| 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 Opus"); |
| return -1; |
| } |
| } |
| |
| // Re-init with new rate |
| if (WebRtcOpus_EncoderInit(_encoderInstPtr, _mySampFreq, _opusMode, _flagVBR) >= 0) |
| { |
| _encoderParams.codecInstant.rate = _myRate; |
| return 0; |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| |
| #endif |
| |
| } // namespace webrtc |
