| /* |
| * 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_ilbc.h" |
| #include "acm_neteq.h" |
| #include "trace.h" |
| #include "webrtc_neteq.h" |
| #include "webrtc_neteq_help_macros.h" |
| |
| #ifdef WEBRTC_CODEC_ILBC |
| #include "ilbc.h" |
| #endif |
| |
| namespace webrtc |
| { |
| |
| #ifndef WEBRTC_CODEC_ILBC |
| |
| ACMILBC::ACMILBC(WebRtc_Word16 /* codecID */) |
| : _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL) { |
| return; |
| } |
| |
| |
| ACMILBC::~ACMILBC() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalEncode( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16* /* bitStreamLenByte */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalInitEncoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalInitDecoder( |
| WebRtcACMCodecParams* /* codecParams */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word32 |
| ACMILBC::CodecDef( |
| WebRtcNetEQ_CodecDef& /* codecDef */, |
| const CodecInst& /* codecInst */) |
| { |
| return -1; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMILBC::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalCreateEncoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMILBC::DestructEncoderSafe() |
| { |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalCreateDecoder() |
| { |
| return -1; |
| } |
| |
| |
| void |
| ACMILBC::DestructDecoderSafe() |
| { |
| return; |
| } |
| |
| |
| void |
| ACMILBC::InternalDestructEncoderInst( |
| void* /* ptrInst */) |
| { |
| return; |
| } |
| |
| WebRtc_Word16 |
| ACMILBC::SetBitRateSafe(const WebRtc_Word32 /* rate */) |
| { |
| return -1; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::UnregisterFromNetEqSafe( |
| ACMNetEQ* /* netEq */, |
| WebRtc_Word16 /* payloadType */) |
| { |
| return -1; |
| } |
| |
| |
| #else //===================== Actual Implementation ======================= |
| |
| |
| ACMILBC::ACMILBC( |
| WebRtc_Word16 codecID): |
| _encoderInstPtr(NULL), |
| _decoderInstPtr(NULL) |
| { |
| _codecID = codecID; |
| return; |
| } |
| |
| |
| ACMILBC::~ACMILBC() |
| { |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcIlbcfix_EncoderFree(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcIlbcfix_DecoderFree(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| return; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalEncode( |
| WebRtc_UWord8* bitStream, |
| WebRtc_Word16* bitStreamLenByte) |
| { |
| *bitStreamLenByte = WebRtcIlbcfix_Encode(_encoderInstPtr, |
| &_inAudio[_inAudioIxRead], _frameLenSmpl, (WebRtc_Word16*)bitStream); |
| if (*bitStreamLenByte < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalEncode: error in encode for ILBC"); |
| return -1; |
| } |
| // increment the read index this tell the caller that how far |
| // we have gone forward in reading the audio buffer |
| _inAudioIxRead += _frameLenSmpl; |
| return *bitStreamLenByte; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::DecodeSafe( |
| WebRtc_UWord8* /* bitStream */, |
| WebRtc_Word16 /* bitStreamLenByte */, |
| WebRtc_Word16* /* audio */, |
| WebRtc_Word16* /* audioSamples */, |
| WebRtc_Word8* /* speechType */) |
| { |
| return 0; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalInitEncoder( |
| WebRtcACMCodecParams* codecParams) |
| { |
| // initialize with a correct processing block length |
| if((160 == (codecParams->codecInstant).pacsize) || |
| (320 == (codecParams->codecInstant).pacsize)) |
| { |
| // processing block of 20ms |
| return WebRtcIlbcfix_EncoderInit(_encoderInstPtr, 20); |
| } |
| else if((240 == (codecParams->codecInstant).pacsize) || |
| (480 == (codecParams->codecInstant).pacsize)) |
| { |
| // processing block of 30ms |
| return WebRtcIlbcfix_EncoderInit(_encoderInstPtr, 30); |
| } |
| else |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalInitEncoder: invalid processing block"); |
| return -1; |
| } |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalInitDecoder( |
| WebRtcACMCodecParams* codecParams) |
| { |
| // initialize with a correct processing block length |
| if((160 == (codecParams->codecInstant).pacsize) || |
| (320 == (codecParams->codecInstant).pacsize)) |
| { |
| // processing block of 20ms |
| return WebRtcIlbcfix_DecoderInit(_decoderInstPtr, 20); |
| } |
| else if((240 == (codecParams->codecInstant).pacsize) || |
| (480 == (codecParams->codecInstant).pacsize)) |
| { |
| // processing block of 30ms |
| return WebRtcIlbcfix_DecoderInit(_decoderInstPtr, 30); |
| } |
| else |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalInitDecoder: invalid processing block"); |
| return -1; |
| } |
| } |
| |
| |
| WebRtc_Word32 |
| ACMILBC::CodecDef( |
| WebRtcNetEQ_CodecDef& codecDef, |
| const CodecInst& codecInst) |
| { |
| if (!_decoderInitialized) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "CodeDef: decoder not initialized for ILBC"); |
| return -1; |
| } |
| // Fill up the structure by calling |
| // "SET_CODEC_PAR" & "SET_ILBC_FUNCTION." |
| // Then return the structure back to NetEQ to add the codec to it's |
| // database. |
| SET_CODEC_PAR((codecDef), kDecoderILBC, codecInst.pltype, |
| _decoderInstPtr, 8000); |
| SET_ILBC_FUNCTIONS((codecDef)); |
| return 0; |
| } |
| |
| |
| ACMGenericCodec* |
| ACMILBC::CreateInstance(void) |
| { |
| return NULL; |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalCreateEncoder() |
| { |
| if (WebRtcIlbcfix_EncoderCreate(&_encoderInstPtr) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalCreateEncoder: cannot create instance for ILBC encoder"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| void |
| ACMILBC::DestructEncoderSafe() |
| { |
| _encoderInitialized = false; |
| _encoderExist = false; |
| if(_encoderInstPtr != NULL) |
| { |
| WebRtcIlbcfix_EncoderFree(_encoderInstPtr); |
| _encoderInstPtr = NULL; |
| } |
| } |
| |
| |
| WebRtc_Word16 |
| ACMILBC::InternalCreateDecoder() |
| { |
| if (WebRtcIlbcfix_DecoderCreate(&_decoderInstPtr) < 0) |
| { |
| WEBRTC_TRACE(webrtc::kTraceError, webrtc::kTraceAudioCoding, _uniqueID, |
| "InternalCreateDecoder: cannot create instance for ILBC decoder"); |
| return -1; |
| } |
| return 0; |
| } |
| |
| |
| void |
| ACMILBC::DestructDecoderSafe() |
| { |
| _decoderInitialized = false; |
| _decoderExist = false; |
| if(_decoderInstPtr != NULL) |
| { |
| WebRtcIlbcfix_DecoderFree(_decoderInstPtr); |
| _decoderInstPtr = NULL; |
| } |
| } |
| |
| |
| void |
| ACMILBC::InternalDestructEncoderInst( |
| void* ptrInst) |
| { |
| if(ptrInst != NULL) |
| { |
| WebRtcIlbcfix_EncoderFree((iLBC_encinst_t_*)ptrInst); |
| } |
| return; |
| } |
| |
| WebRtc_Word16 |
| ACMILBC::SetBitRateSafe(const WebRtc_Word32 rate) |
| { |
| // Check that rate is valid. No need to store the value |
| if (rate == 13300) |
| { |
| WebRtcIlbcfix_EncoderInit(_encoderInstPtr, 30); |
| } |
| else if (rate == 15200) |
| { |
| WebRtcIlbcfix_EncoderInit(_encoderInstPtr, 20); |
| } |
| else |
| { |
| return -1; |
| } |
| _encoderParams.codecInstant.rate = rate; |
| |
| return 0; |
| } |
| |
| WebRtc_Word16 |
| ACMILBC::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(kDecoderILBC); |
| } |
| |
| #endif |
| |
| } // namespace webrtc |